#!/usr/bin/env php
<?php

if (class_exists('Phar')) {
$include = 'phar://' . __FILE__;
Phar::mapPhar('couscous.phar');
} else {
throw new Exception('The "phar" extension is required to run this archive.');
}


/**
 * Runs Couscous.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */

use Couscous\Application\ContainerFactory;
use Symfony\Component\Console\Application;
use Symfony\Component\Console\Output\ConsoleOutput;

if (version_compare(phpversion(), '5.4', '<')) {
    die('You must use PHP >= 5.4 in order to use Couscous. Please upgrade your PHP version.');
}

if (!ini_get('date.timezone')) {
    date_default_timezone_set('UTC');
}

// Phar
if (isset($include)) {
    require_once $include . '/vendor/autoload.php';
} elseif (file_exists(__DIR__ . '/../vendor/autoload.php')) {
    require_once __DIR__ . '/../vendor/autoload.php';
} else {
    require_once __DIR__ . '/../../../autoload.php';
}

$output = new ConsoleOutput();

$factory = new ContainerFactory();
$container = $factory->createContainer();

// Set the logger
$logger = $container->make('Symfony\Component\Console\Logger\ConsoleLogger', [
    'output' => $output,
]);
$container->set('Psr\Log\LoggerInterface', $logger);

/** @var Application $application */
$application = $container->get('application');
$application->run();


__HALT_COMPILER(); ?>
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Ì®&¶      '   vendor/composer/autoload_namespaces.php_  Q=«]_  žK#ý¶         vendor/composer/ClassLoader.php“4  Q=«]“4  ²z–¶      (   vendor/composer/ca-bundle/res/cacert.pemUk Q=«]Uk ”JÌ¸¶      *   vendor/composer/ca-bundle/src/CaBundle.php½6  Q=«]½6  nC/ 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namespace Couscous\Module\Core\Step;

use Couscous\Model\Project;
use Couscous\Step;
use Symfony\Component\Filesystem\Filesystem;
use Symfony\Component\Finder\Finder;

/**
 * Clear the generation target directory.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ClearTargetDirectory implements Step
{
    /**
     * @var Filesystem
     */
    private $filesystem;

    public function __construct(Filesystem $filesystem)
    {
        $this->filesystem = $filesystem;
    }

    public function __invoke(Project $project)
    {
        $files = new Finder();
        $files->in($project->targetDirectory);

        $this->filesystem->remove($files);
    }
}
<?php

namespace Couscous\Module\Core\Step;

use Couscous\Model\Project;
use Couscous\Module\Template\Model\CnameFile;
use Couscous\Step;

/**
 * Add the CNAME file to project.
 *
 * @author Leonardo Ruhland <leoruhland@gmail.com>
 */
class AddCname implements Step
{
    public function __invoke(Project $project)
    {
        if (isset($project->metadata['cname'])) {
            $project->addFile(new CnameFile('CNAME', $project->metadata['cname']));
        }
    }
}
<?php

namespace Couscous\Module\Core\Step;

use Couscous\Model\Project;
use Couscous\Step;
use Psr\Log\LoggerInterface;
use Symfony\Component\Filesystem\Filesystem;

/**
 * Writes the generated files to disk.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class WriteFiles implements Step
{
    /**
     * @var Filesystem
     */
    private $filesystem;

    /**
     * @var LoggerInterface
     */
    private $logger;

    public function __construct(Filesystem $filesystem, LoggerInterface $logger)
    {
        $this->filesystem = $filesystem;
        $this->logger = $logger;
    }

    public function __invoke(Project $project)
    {
        foreach ($project->getFiles() as $file) {
            $targetFilename = $project->targetDirectory.'/'.$file->relativeFilename;

            if ($this->filesystem->exists($targetFilename)) {
                $this->logger->info(
                    "Skipping '{file}' because a file with the same name already exists",
                    ['file' => $file->relativeFilename]
                );
                continue;
            }

            $this->logger->debug('Writing {file}', ['file' => $targetFilename]);

            $this->filesystem->dumpFile($targetFilename, $file->getContent());
        }
    }
}
<?php

namespace Couscous\Module\Core\Step;

use Couscous\Model\Project;
use Couscous\Step;

/**
 * Add to the current file name to the metadata.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class AddFileNameToMetadata implements Step
{
    public function __invoke(Project $project)
    {
        foreach ($project->getFiles() as $file) {
            $fileMetadata = $file->getMetadata();
            $fileMetadata['currentFile'] = $file->relativeFilename;
        }
    }
}
<?php

namespace Couscous\Module\Core\Step;

use Couscous\Model\LazyFile;
use Couscous\Model\Project;
use Couscous\Step;

/**
 * Add images to the project.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class AddImages implements Step
{
    /**
     * Add images to the given project.
     *
     * @param Project $project
     */
    public function __invoke(Project $project)
    {
        $files = $project->sourceFiles();
        $files
            ->name('*.gif')
            ->name('*.png')
            ->name('*.jpg')
            ->name('*.jpeg')
            ->name('*.svg');

        $project->watchlist->watchFiles($files);

        foreach ($files as $file) {
            /** @var SplFileInfo $file */
            $project->addFile(new LazyFile($file->getPathname(), $file->getRelativePathname()));
        }
    }
}
<?php

namespace Couscous\Module\Bower\Step;

use Couscous\CommandRunner\CommandRunner;
use Couscous\Model\Project;
use Couscous\Step;
use Psr\Log\LoggerInterface;
use Symfony\Component\Filesystem\Filesystem;

/**
 * Run Bower install.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class RunBowerInstall implements Step
{
    /**
     * @var Filesystem
     */
    private $filesystem;

    /**
     * @var CommandRunner
     */
    private $commandRunner;

    /**
     * @var LoggerInterface
     */
    private $logger;

    public function __construct(
        Filesystem $filesystem,
        CommandRunner $commandRunner,
        LoggerInterface $logger
    ) {
        $this->filesystem = $filesystem;
        $this->commandRunner = $commandRunner;
        $this->logger = $logger;
    }

    public function __invoke(Project $project)
    {
        if ($project->regenerate || !$this->hasBowerJson($project)) {
            return;
        }

        $this->logger->notice('Executing "bower install"');

        $result = $this->commandRunner->run(sprintf(
            'cd "%s" && bower install',
            $project->metadata['template.directory']
        ));

        if ($result) {
            $this->logger->info($result);
        }
    }

    private function hasBowerJson(Project $project)
    {
        if (!$project->metadata['template.directory']) {
            return false;
        }

        $filename = $project->metadata['template.directory'].'/bower.json';

        return $this->filesystem->exists($filename);
    }
}
<?php

namespace Couscous\Module\Config\Step;

use Couscous\Model\Project;
use Couscous\Step;

/**
 * Set the default config.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class SetDefaultConfig implements Step
{
    private $defaultConfig = [
        'exclude' => [
            'vendor', 'website',
        ],
    ];

    public function __invoke(Project $project)
    {
        $project->metadata->setMany($this->defaultConfig);
    }
}
<?php

namespace Couscous\Module\Config\Step;

use Couscous\Model\Project;
use Couscous\Step;
use Psr\Log\LoggerInterface;
use Symfony\Component\Filesystem\Filesystem;
use Symfony\Component\Yaml\Exception\ParseException;
use Symfony\Component\Yaml\Parser;

/**
 * Loads the Couscous config for the project.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class LoadConfig implements Step
{
    const FILENAME = 'couscous.yml';

    /**
     * @var Filesystem
     */
    private $filesystem;

    /**
     * @var Parser
     */
    private $yamlParser;

    /**
     * @var LoggerInterface
     */
    private $logger;

    public function __construct(Filesystem $filesystem, Parser $yamlParser, LoggerInterface $logger)
    {
        $this->filesystem = $filesystem;
        $this->yamlParser = $yamlParser;
        $this->logger = $logger;
    }

    public function __invoke(Project $project)
    {
        $filename = $project->sourceDirectory.'/'.self::FILENAME;

        if (!$this->filesystem->exists($filename)) {
            $this->logger->notice('No couscous.yml configuration file found, using default config');

            return;
        }

        $metadata = $this->parseYamlFile($filename);
        $metadata = $this->validateConfig($metadata);

        $project->metadata->setMany($metadata);
        $project->watchlist->watchFile($filename);
    }

    private function parseYamlFile($filename)
    {
        try {
            $metadata = $this->yamlParser->parse(file_get_contents($filename));
        } catch (ParseException $e) {
            throw InvalidConfigException::invalidYaml(self::FILENAME, $e);
        }

        if (!is_array($metadata)) {
            return [];
        }

        return $metadata;
    }

    private function validateConfig($values)
    {
        if (array_key_exists('include', $values)) {
            $values['include'] = (array) $values['include'];
        }
        if (array_key_exists('exclude', $values)) {
            $values['exclude'] = (array) $values['exclude'];
        }
        if (array_key_exists('directory', $values)) {
            $values['directory'] = trim($values['directory']);
        }
        if (array_key_exists('before', $values)) {
            $values['before'] = (array) $values['before'];
        }
        if (array_key_exists('after', $values)) {
            $values['after'] = (array) $values['after'];
        }
        if (array_key_exists('templateUrl', $values)) {
            $values['templateUrl'] = (string) $values['templateUrl'];
        }
        if (array_key_exists('baseUrl', $values)) {
            // Trim any trailing "/" in the base url
            $values['baseUrl'] = rtrim(trim($values['baseUrl']), '/');
        }

        return $values;
    }
}
<?php

namespace Couscous\Module\Config\Step;

use Couscous\Model\Project;

/**
 * Override the baseUrl if we are in preview.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class OverrideBaseUrlForPreview implements \Couscous\Step
{
    public function __invoke(Project $project)
    {
        if ($project->metadata['preview'] === true) {
            $project->metadata['baseUrl'] = '';
        }
    }
}
<?php

namespace Couscous\Module\Config\Step;

use Couscous\Model\Project;
use Psr\Log\LoggerInterface;

/**
 * Override config variables when specified using --config option.
 *
 * @author D.J. Marcolesco <dj.marcolesco@gmail.com>
 */
class OverrideConfigFromCLI implements \Couscous\Step
{
    /**
     * @var LoggerInterface
     */
    private $logger;

    public function __construct(LoggerInterface $logger)
    {
        $this->logger = $logger;
    }

    public function __invoke(Project $project)
    {
        if (!$project->metadata['cliConfig']) {
            return;
        }

        $cliConfig = [];
        foreach ($project->metadata['cliConfig'] as $item) {
            $explosion = explode('=', $item, 2);
            $this->logger->notice('Overriding global config: '.$explosion[0].' = "'.$explosion[1].'"');

            $cliConfig[$explosion[0]] = $explosion[1];
        }

        unset($project->metadata['cliConfig']);

        $project->metadata->setMany($cliConfig);
    }
}
<?php

namespace Couscous\Module\Config\Step;

/**
 * Invalid configuration.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class InvalidConfigException extends \Exception
{
    public static function invalidYaml($file, \Exception $previous = null)
    {
        return new self(sprintf(
            'The YAML configuration file %s contains invalid YAML%s',
            $file,
            $previous ? ': '.$previous->getMessage() : ''
        ), 0, $previous);
    }
}
<?php

namespace Couscous\Module\Markdown\Step;

use Couscous\Model\Project;
use Couscous\Module\Markdown\Model\MarkdownFile;
use Couscous\Step;

/**
 * Processes the name of Markdown files.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ProcessMarkdownFileName implements Step
{
    public function __invoke(Project $project)
    {
        /** @var MarkdownFile[] $markdownFiles */
        $markdownFiles = $project->findFilesByType('Couscous\Module\Markdown\Model\MarkdownFile');

        foreach ($markdownFiles as $markdownFile) {
            $project->removeFile($markdownFile);

            $this->renameFileExtension($markdownFile);
            $this->renameReadme($markdownFile, $project);
            $this->renameFilename($markdownFile);

            $project->addFile($markdownFile);
        }
    }

    private function renameFileExtension(MarkdownFile $file)
    {
        $file->relativeFilename = $this->replaceExtension($file->relativeFilename);
    }

    private function renameReadme(MarkdownFile $file, Project $project)
    {
        $indexFile = empty($project->metadata['template']['index'])
            ? 'README.md'
            : $project->metadata['template']['index'];
        $indexFile = $this->replaceExtension(basename($indexFile));
        if ($file->getBasename() !== $indexFile) {
            return;
        }

        $file->relativeFilename = $file->getDirectory().'index.html';
    }

    private function renameFilename(MarkdownFile $file)
    {
        $basename = $file->getBasename();
        if (!preg_match('/[A-Z]/', $basename)) {
            return;
        }

        $file->relativeFilename = $file->getDirectory().strtolower($basename);
    }

    private function replaceExtension($filename)
    {
        $filename = substr($filename, 0, strrpos($filename, '.'));

        return $filename.'.html';
    }
}
<?php

namespace Couscous\Module\Markdown\Step;

use Couscous\Model\Project;
use Couscous\Module\Template\Model\HtmlFile;
use Couscous\Step;

/**
 * Add ids to <hN> tags.
 *
 * @author Henrique Moody <henriquemoody@gmail.com>
 */
class CreateHeadingIds implements Step
{
    /**
     * @var array
     */
    private $ids = [];

    /**
     * @param Project $project
     */
    public function __invoke(Project $project)
    {
        /** @var HtmlFile[] $htmlFiles */
        $htmlFiles = $project->findFilesByType('Couscous\Module\Template\Model\HtmlFile');

        foreach ($htmlFiles as $htmlFile) {
            $htmlFile->content = $this->render($htmlFile->getContent());
        }
    }

    private function reset()
    {
        $this->ids = [];
    }

    private function render($content)
    {
        $this->reset();

        return preg_replace_callback(
            '/<(h[0-6])>([^<]+)/',
            [$this, 'addAttributeId'],
            $content
        );
    }

    private function addAttributeId(array $matches)
    {
        $id = $this->slugfy($matches[2]);
        if (!isset($this->ids[$id])) {
            $this->ids[$id] = 0;
        }

        $replacement = sprintf(
            '<%s id="%s">%s',
            $matches[1],
            ($this->ids[$id] > 0 ? $id.'-'.$this->ids[$id] : $id),
            $matches[2]
        );

        $this->ids[$id]++;

        return $replacement;
    }

    private function slugfy($text)
    {
        $slug = trim($text);
        $slug = strtr($slug, ' ', '-');
        $slug = strtolower($slug);

        return preg_replace('/[^a-z0-9_-]/', '', $slug);
    }
}
<?php

namespace Couscous\Module\Markdown\Step;

use Couscous\Model\Project;
use Couscous\Module\Markdown\Model\MarkdownFile;
use Couscous\Module\Template\Model\HtmlFile;
use Couscous\Step;
use Mni\FrontYAML\Parser;

/**
 * Turns Markdown to HTML.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class RenderMarkdown implements Step
{
    /**
     * @var Parser
     */
    private $markdownParser;

    public function __construct(Parser $markdownParser)
    {
        $this->markdownParser = $markdownParser;
    }

    public function __invoke(Project $project)
    {
        /** @var MarkdownFile[] $markdownFiles */
        $markdownFiles = $project->findFilesByType('Couscous\Module\Markdown\Model\MarkdownFile');

        foreach ($markdownFiles as $markdownFile) {
            $htmlFile = $this->renderFile($markdownFile);

            $project->replaceFile($markdownFile, $htmlFile);
        }
    }

    private function renderFile(MarkdownFile $file)
    {
        $document = $this->markdownParser->parse($file->getContent());

        $filename = $this->replaceExtension($file->relativeFilename);

        return new HtmlFile($filename, $document->getContent(), $file);
    }

    private function replaceExtension($filename)
    {
        $filename = substr($filename, 0, strrpos($filename, '.'));

        return $filename.'.html';
    }
}
<?php

namespace Couscous\Module\Markdown\Step;

use Couscous\Model\Project;
use Couscous\Module\Markdown\Model\MarkdownFile;
use Couscous\Step;
use Mni\FrontYAML\Parser;

/**
 * Parse Markdown front matter to load file metadata.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ParseMarkdownFrontMatter implements Step
{
    /**
     * @var Parser
     */
    private $markdownParser;

    public function __construct(Parser $markdownParser)
    {
        $this->markdownParser = $markdownParser;
    }

    public function __invoke(Project $project)
    {
        /** @var MarkdownFile[] $markdownFiles */
        $markdownFiles = $project->findFilesByType('Couscous\Module\Markdown\Model\MarkdownFile');

        foreach ($markdownFiles as $file) {
            $document = $this->markdownParser->parse($file->getContent());

            $metadataValues = $document->getYAML();

            if (is_array($metadataValues)) {
                $file->getMetadata()->setMany($metadataValues);
            }
        }
    }
}
<?php

namespace Couscous\Module\Markdown\Step;

use Couscous\Model\Project;
use Couscous\Module\Markdown\Model\MarkdownFile;
use Couscous\Step;

/**
 * Rewrites links from *.md to *.html.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class RewriteMarkdownLinks implements Step
{
    /**
     * OMG regexes...
     *
     * @link https://regex101.com/
     */
    const MARKDOWN_LINK_REGEX = '/\[(?:[^\]]+)\]\(([^\)]+\/)?([A-Za-z0-9_\.\-]+\.md)([^.\)][^\)]*)?\)/';

    public function __invoke(Project $project)
    {
        /** @var MarkdownFile[] $markdownFiles */
        $markdownFiles = $project->findFilesByType('Couscous\Module\Markdown\Model\MarkdownFile');

        foreach ($markdownFiles as $file) {
            $pattern = self::MARKDOWN_LINK_REGEX;
            $subject = $file->content;

            $file->content = preg_replace_callback($pattern, [$this, 'replaceFilename'], $subject);
        }
    }

    private function replaceFilename(array $matches)
    {
        $filename = strtolower($matches[2]);
        $filename = str_replace('.md', '.html', $filename);
        if ($filename == 'readme.html') {
            $filename = 'index.html';
        }

        $pattern = '/\((.+)?\b'.$matches[2].'\b(.+)?\)/';
        $replacement = '(${1}'.$filename.'${2})';

        return preg_replace($pattern, $replacement, $matches[0]);
    }
}
<?php

namespace Couscous\Module\Markdown\Step;

use Couscous\Model\Project;
use Couscous\Module\Markdown\Model\MarkdownFile;
use Couscous\Step;
use Symfony\Component\Finder\SplFileInfo;

/**
 * Loads Markdown files in memory.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class LoadMarkdownFiles implements Step
{
    public function __invoke(Project $project)
    {
        $files = $project->sourceFiles();
        $files->name('*.md');

        foreach ($files as $file) {
            /** @var SplFileInfo $file */
            $content = file_get_contents($file->getPathname());

            $project->addFile(new MarkdownFile($file->getRelativePathname(), $content));
        }

        $project->watchlist->watchFiles($files);
    }
}
<?php

return [

    'Mni\FrontYAML\Parser' => DI\object()
        ->constructorParameter('markdownParser', DI\get('Mni\FrontYAML\Markdown\MarkdownParser')),

    'Mni\FrontYAML\Markdown\MarkdownParser' => DI\object('Mni\FrontYAML\Bridge\Parsedown\ParsedownParser')
        ->constructor(DI\get('ParsedownExtra')),

];
<?php

namespace Couscous\Module\Markdown\Model;

use Couscous\Model\File;

/**
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class MarkdownFile extends File
{
    /**
     * @var string
     */
    public $content;

    public function __construct($relativeFilename, $content)
    {
        $this->content = $content;

        parent::__construct($relativeFilename);
    }

    public function getContent()
    {
        return $this->content;
    }
}
<?php

namespace Couscous\Module\Template\Step;

use Couscous\Model\Project;
use Couscous\Module\Template\Model\HtmlFile;
use Couscous\Step;

/**
 * Add Livereload snippet in html generated files.
 *
 * @author Gaultier Boniface <gboniface@wysow.fr>
 */
class AddLivereloadSnippet implements Step
{
    const LIVERELOAD_SNIPPET = '
        <!-- Livereload -->
        <script>
            document.write(\'<script src="http://\' + (location.host || \'localhost\').split(\':\')[0] +
                    \':35729/livereload.js?snipver=1"></\' + \'script>\')
        </script>
        <!-- End Livereload -->
    ';

    public function __invoke(Project $project)
    {
        if (!$project->metadata['preview']) {
            return;
        }

        /** @var HtmlFile[] $htmlFiles */
        $htmlFiles = $project->findFilesByType('Couscous\Module\Template\Model\HtmlFile');

        foreach ($htmlFiles as $file) {
            $contentAsArray = explode('</body>', $file->content);

            $contentAsArray[0] = trim($contentAsArray[0]).self::LIVERELOAD_SNIPPET;

            $file->content = implode('</body>', $contentAsArray);
        }
    }
}
<?php

namespace Couscous\Module\Template\Step;

use Couscous\CommandRunner\Git;
use Couscous\Model\Project;
use Couscous\Step;
use Psr\Log\LoggerInterface;
use Symfony\Component\Filesystem\Filesystem;

/**
 * Fetch a remote template.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class FetchRemoteTemplate implements Step
{
    /**
     * @var Filesystem
     */
    private $filesystem;

    /**
     * @var LoggerInterface
     */
    private $logger;

    /**
     * @var Git
     */
    private $git;

    /**
     * Temporarily save the template directory if we are in preview
     * to avoid cloning the repository every time.
     *
     * In theory we shouldn't store state in this object because it's a service
     * but we would need extensive change to avoid that.
     *
     * @var string
     */
    private $templateDirectory;

    public function __construct(Filesystem $filesystem, LoggerInterface $logger, Git $git)
    {
        $this->filesystem = $filesystem;
        $this->logger = $logger;
        $this->git = $git;
    }

    public function __invoke(Project $project)
    {
        // In preview we avoid cloning the repository every time
        if ($project->regenerate && $this->templateDirectory) {
            $project->metadata['template.directory'] = $this->templateDirectory;

            return;
        }

        $templateUrl = $project->metadata['template.url'];

        if ($templateUrl === null) {
            return;
        }

        $directory = $this->fetchGitTemplate($templateUrl);

        $this->templateDirectory = $directory;
        $project->metadata['template.directory'] = $directory;
    }

    private function fetchGitTemplate($gitUrl)
    {
        $this->logger->notice('Fetching template from {url}', ['url' => $gitUrl]);

        $directory = $this->createTempDirectory('couscous_template_');

        $this->git->cloneRepository($gitUrl, $directory);

        return $directory;
    }

    private function createTempDirectory($prefix)
    {
        $tempFile = tempnam(sys_get_temp_dir(), $prefix);
        // Turn the temp file into a temp directory
        $this->filesystem->remove($tempFile);
        $this->filesystem->mkdir($tempFile);

        return $tempFile;
    }
}
<?php

namespace Couscous\Module\Template\Step;

use Couscous\Model\LazyFile;
use Couscous\Model\Project;
use Couscous\Step;
use Symfony\Component\Filesystem\Filesystem;
use Symfony\Component\Finder\Finder;
use Symfony\Component\Finder\SplFileInfo;

/**
 * Load asset files from the template directory.
 *
 * Assets are any file that is not a Twig template.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class LoadAssets implements Step
{
    /**
     * @var Filesystem
     */
    private $filesystem;

    public function __construct(Filesystem $filesystem)
    {
        $this->filesystem = $filesystem;
    }

    public function __invoke(Project $project)
    {
        if (!$project->metadata['template.directory']) {
            return;
        }

        $files = new Finder();
        $files->files()
            ->in($project->metadata['template.directory'])
            ->ignoreDotFiles(false)
            ->notName('*.twig')
            ->notName('*.md')
            ->notName('couscous.yml');

        $project->watchlist->watchFiles($files);

        foreach ($files as $file) {
            /** @var SplFileInfo $file */
            $project->addFile(new LazyFile($file->getPathname(), $file->getRelativePathname()));
        }
    }
}
<?php

namespace Couscous\Module\Template\Step;

use Couscous\Model\Project;
use Couscous\Step;
use Symfony\Component\Filesystem\Filesystem;

/**
 * Initializes the template directory.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ValidateTemplateDirectory implements Step
{
    const DEFAULT_TEMPLATE_DIRECTORY = 'website';

    /**
     * @var Filesystem
     */
    private $filesystem;

    public function __construct(Filesystem $filesystem)
    {
        $this->filesystem = $filesystem;
    }

    public function __invoke(Project $project)
    {
        $directory = $project->metadata['template.directory'];

        if ($directory === null) {
            $directory = $project->sourceDirectory.'/'.self::DEFAULT_TEMPLATE_DIRECTORY;
        }

        if (!$this->filesystem->isAbsolutePath($directory)) {
            $directory = $project->sourceDirectory.'/'.$directory;
        }

        $this->assertDirectoryExist($directory);

        $project->watchlist->watchDirectory($directory);

        $project->metadata['template.directory'] = $directory;
    }

    private function assertDirectoryExist($directory)
    {
        if (!$this->filesystem->exists($directory)) {
            throw new \RuntimeException(sprintf(
                "The template directory '%s' doesn't exist",
                $directory
            ));
        }
    }
}
<?php

namespace Couscous\Module\Template\Step;

use Couscous\Model\Project;
use Couscous\Module\Template\Model\HtmlFile;
use Couscous\Step;

/**
 * Add to the layout variables the list of the pages of the website.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class AddPageListToLayoutVariables implements Step
{
    public function __invoke(Project $project)
    {
        /** @var HtmlFile[] $htmlFiles */
        $htmlFiles = $project->findFilesByType('Couscous\Module\Template\Model\HtmlFile');

        $pageList = [];
        $pageTree = [];

        foreach ($htmlFiles as $file) {
            $pageList[] = $file->relativeFilename;

            $path = dirname($file->relativeFilename);
            $filename = basename($file->relativeFilename);

            if ($path === '.') {
                $path = [];
            } else {
                $path = explode(DIRECTORY_SEPARATOR, $path);
            }

            $this->setValue($pageTree, $path, $filename);
        }

        // Sort
        natsort($pageList);
        $this->sortRecursively($pageTree);

        $project->metadata['pageList'] = $pageList;
        $project->metadata['pageTree'] = $pageTree;
    }

    private function setValue(array &$array, array $path, $value)
    {
        if (empty($path)) {
            $array[$value] = $value;

            return;
        }

        $dir = array_shift($path);

        if (!array_key_exists($dir, $array)) {
            $array[$dir] = [];
        }

        $this->setValue($array[$dir], $path, $value);
    }

    private function sortRecursively(&$array)
    {
        foreach ($array as &$value) {
            if (is_array($value)) {
                $this->sortRecursively($value);
            }
        }
        ksort($array);
    }
}
<?php

namespace Couscous\Module\Template\Step;

use Couscous\Model\Project;
use Couscous\Module\Template\Model\HtmlFile;
use Couscous\Step;
use Symfony\Component\Finder\Finder;
use Symfony\Component\Finder\SplFileInfo;
use Twig_Environment;
use Twig_Loader_Array;

/**
 * Renders file layouts using Twig.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ProcessTwigLayouts implements Step
{
    const DEFAULT_LAYOUT_NAME = 'default.twig';

    public function __invoke(Project $project)
    {
        if (!$project->metadata['template.directory']) {
            return;
        }

        $twig = $this->createTwig($project->metadata['template.directory']);

        /** @var HtmlFile[] $htmlFiles */
        $htmlFiles = $project->findFilesByType('Couscous\Module\Template\Model\HtmlFile');

        foreach ($htmlFiles as $file) {
            $fileMetadata = $file->getMetadata();
            $layout = isset($fileMetadata['layout'])
                ? $fileMetadata['layout'].'.twig'
                : self::DEFAULT_LAYOUT_NAME;

            $context = array_merge(
                $project->metadata->toArray(),
                $fileMetadata->toArray(),
                ['content' => $file->content]
            );

            try {
                $file->content = $twig->render($layout, $context);
            } catch (\Exception $e) {
                throw new \RuntimeException(sprintf(
                    'There was an error while rendering the file "%s" with the layout "%s": %s',
                    $file->relativeFilename,
                    $layout,
                    $e->getMessage()
                ), 0, $e);
            }
        }
    }

    private function createTwig($templateDirectory)
    {
        $loader = $this->createLoader($templateDirectory);

        return new Twig_Environment($loader, [
            'cache'       => false,
            'auto_reload' => true,
        ]);
    }

    /**
     * We have to use a Twig_Loader_Array because of #12.
     *
     * @link https://github.com/CouscousPHP/Couscous/issues/12
     *
     * @param string $templateDirectory
     *
     * @return Twig_Loader_Array
     */
    private function createLoader($templateDirectory)
    {
        $finder = new Finder();
        $finder->files()
            ->in($templateDirectory)
            ->name('*.twig');

        $layouts = [];
        foreach ($finder as $file) {
            /** @var SplFileInfo $file */
            $name = $file->getFilename();
            $layouts[$name] = $file->getContents();
        }

        return new Twig_Loader_Array($layouts);
    }
}
<?php

namespace Couscous\Module\Template\Step;

use Couscous\Model\Project;
use Couscous\Step;
use Symfony\Component\Filesystem\Filesystem;

/**
 * Uses the default template if none is configured or included in the repository.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class UseDefaultTemplate implements Step
{
    const DEFAULT_TEMPLATE_URL = 'https://github.com/CouscousPHP/Template-Light.git';

    /**
     * @var Filesystem
     */
    private $filesystem;

    public function __construct(Filesystem $filesystem)
    {
        $this->filesystem = $filesystem;
    }

    public function __invoke(Project $project)
    {
        if ($this->useRemoteTemplate($project)
            || $this->hasCustomTemplateDirectory($project)
            || $this->hasTemplateDirectory($project)
        ) {
            return;
        }

        $project->metadata['template.url'] = self::DEFAULT_TEMPLATE_URL;
    }

    private function useRemoteTemplate(Project $project)
    {
        return $project->metadata['template.url'] !== null;
    }

    private function hasCustomTemplateDirectory(Project $project)
    {
        return $project->metadata['template.directory'] !== null;
    }

    private function hasTemplateDirectory(Project $project)
    {
        $templateDirectory = $project->sourceDirectory.'/'.ValidateTemplateDirectory::DEFAULT_TEMPLATE_DIRECTORY;

        return $this->filesystem->exists($templateDirectory);
    }
}
<?php

namespace Couscous\Module\Template\Model;

use Couscous\Model\File;

/**
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class HtmlFile extends File
{
    /**
     * @var string
     */
    public $content;

    /**
     * @var File
     */
    private $wrappedFile;

    public function __construct($relativeFilename, $content, File $wrappedFile = null)
    {
        parent::__construct($relativeFilename);

        $this->content = $content;
        $this->wrappedFile = $wrappedFile;
    }

    public function getContent()
    {
        return $this->content;
    }

    public function getMetadata()
    {
        return $this->wrappedFile ? $this->wrappedFile->getMetadata() : parent::getMetadata();
    }
}
<?php

namespace Couscous\Module\Template\Model;

use Couscous\Model\File;

/**
 * @author Leonardo Ruhland <leoruhland@gmail.com>
 */
class CnameFile extends File
{
    /**
     * @var string
     */
    public $content;

    public function __construct($relativeFilename, $content)
    {
        parent::__construct($relativeFilename);

        $this->content = $content;
    }

    public function getContent()
    {
        return $this->content;
    }
}
<?php

namespace Couscous\Module\Scripts\Step;

use Couscous\Model\Project;
use Couscous\Step;

/**
 * Execute the scripts that were set in "scripts.before" in the configuration.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ExecuteBeforeScripts extends ExecuteScripts implements Step
{
    public function __invoke(Project $project)
    {
        $scripts = $project->metadata['scripts.before'];

        $this->executeScripts($scripts, $project);
    }
}
<?php

namespace Couscous\Module\Scripts\Step;

use Couscous\Model\Project;
use Couscous\Step;

/**
 * Execute the scripts that were set in "scripts.after" in the configuration.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ExecuteAfterScripts extends ExecuteScripts implements Step
{
    public function __invoke(Project $project)
    {
        $scripts = $project->metadata['scripts.after'];

        $this->executeScripts($scripts, $project);
    }
}
<?php

namespace Couscous\Module\Scripts\Step;

use Couscous\CommandRunner\CommandException;
use Couscous\CommandRunner\CommandRunner;
use Couscous\Model\Project;
use Psr\Log\LoggerInterface;

/**
 * Base class.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
abstract class ExecuteScripts
{
    /**
     * @var CommandRunner
     */
    private $commandRunner;

    /**
     * @var LoggerInterface
     */
    private $logger;

    public function __construct(CommandRunner $commandRunner, LoggerInterface $logger)
    {
        $this->commandRunner = $commandRunner;
        $this->logger = $logger;
    }

    protected function executeScripts($scripts, Project $project)
    {
        if (empty($scripts)) {
            return;
        }

        foreach ($scripts as $script) {
            $this->executeScript($project->sourceDirectory, $script);
        }
    }

    private function executeScript($sourceDirectory, $script)
    {
        $script = 'cd "'.$sourceDirectory.'" && '.$script;

        $this->logger->notice('Executing {script}', ['script' => $script]);

        try {
            $this->commandRunner->run($script);
        } catch (CommandException $e) {
            throw new \RuntimeException(
                "Error while running '$script':".PHP_EOL.$e->getMessage()
            );
        }
    }
}
<?php

namespace Couscous;

use Couscous\Model\Project;

/**
 * Generation step.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
interface Step
{
    /**
     * Process the given project.
     *
     * @param Project $project
     */
    public function __invoke(Project $project);
}
<?php

namespace Couscous\CommandRunner;

/**
 * Wrapper around git commands.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class Git
{
    /**
     * @var CommandRunner
     */
    private $commandRunner;

    public function __construct(CommandRunner $commandRunner)
    {
        $this->commandRunner = $commandRunner;
    }

    public function cloneRepository($url, $directory)
    {
        $this->commandRunner->run("git clone $url \"$directory\"");
    }

    public function checkoutOriginBranch($directory, $branch)
    {
        $this->run($directory, "git checkout -b $branch origin/$branch");
    }

    public function createBranch($directory, $branch)
    {
        $this->run($directory, "git checkout -b $branch");
    }

    public function commitAllChanges($directory, $message)
    {
        $this->run($directory, "git add --all . && git commit -m \"$message\"");
    }

    public function push($directory, $branch, $remote = 'origin')
    {
        $this->run($directory, "git push $remote $branch");
    }

    /**
     * @param string $remote Remote name
     *
     * @return string The git URL
     */
    public function getRemoteUrl($remote = 'origin')
    {
        $command = "git config --get remote.$remote.url";

        return trim($this->commandRunner->run($command));
    }

    /**
     * Check if the git repository in the provided directory has any uncommitted changes
     *
     * @param string $directory A directory containing a git repository
     * @return bool True if there are changes, false otherwise
     */
    public function hasUncommittedChanges($directory)
    {
        $changes = $this->run($directory, "git diff-index --name-only HEAD");
        return !(ctype_space($changes) || $changes = '');
    }

    private function run($directory, $command)
    {
        return $this->commandRunner->run("cd \"$directory\" && $command");
    }
}
<?php

namespace Couscous\CommandRunner;

/**
 * Run CLI commands.
 *
 * @author Carlos Lombarte <lombartec@gmail.com>
 */
class CommandRunner
{
    /**
     * Runs a command.
     *
     *
     * @param string $command The command to be executed.
     *
     * @throws CommandException When the command exit code is not zero.
     *
     * @return string Output of the command.
     */
    public function run($command)
    {
        if (PHP_OS === 'WINNT') {
            exec($command, $output, $returnValue);
        } else {
            exec($command . ' 2>&1', $output, $returnValue);
        }

        $output = implode(PHP_EOL, $output);

        if ($returnValue !== 0) {
            throw new CommandException($output);
        }

        return $output;
    }
}
<?php

namespace Couscous\CommandRunner;

/**
 * Occurs when a CLI command returns an error.
 *
 * @author Carlos Lombarte <lombartec@gmail.com>
 */
class CommandException extends \Exception
{
}
<?php

namespace Couscous\Model;

/**
 * Represents a file of the project.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
abstract class File
{
    public $relativeFilename;

    /**
     * @var Metadata
     */
    private $metadata;

    public function __construct($relativeFilename)
    {
        $this->relativeFilename = $relativeFilename;
        $this->metadata = new Metadata();
    }

    /**
     * Returns the basename of the file.
     *
     * @return string
     */
    public function getBasename()
    {
        return basename($this->relativeFilename);
    }

    /**
     * Returns the directory of the file.
     *
     * @return string
     */
    public function getDirectory()
    {
        $directory = dirname($this->relativeFilename);
        $directory = ($directory === '.') ? '' : $directory.'/';

        return $directory;
    }

    /**
     * Returns the content of the file.
     *
     * @return string
     */
    abstract public function getContent();

    /**
     * Returns an indexed array of metadata.
     *
     * Array keys are metadata names, array values are metadata values.
     *
     * @return Metadata
     */
    public function getMetadata()
    {
        return $this->metadata;
    }
}
<?php

namespace Couscous\Model;

/**
 * Contains metadata, accessible through array access:.
 *
 *     $metadata['foo'] = 'test';
 *     echo $metadata['foo'];
 *
 *     $metadata['foo'] = ['bar' => 'hello'];
 *     echo $metadata['foo']['bar'];
 *     // Or also
 *     echo $metadata['foo.bar'];
 *
 *     // Non-existing keys just return null when using the `.` notation
 *     echo $metadata['this.is.an.unknown.key'];
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class Metadata implements \ArrayAccess
{
    /**
     * @var array
     */
    private $values = [];

    public function __construct(array $values = [])
    {
        $this->values = $values;
    }

    public function offsetExists($offset)
    {
        $keys = explode('.', $offset);

        return $this->recursiveExist($keys, $this->values);
    }

    public function offsetGet($offset)
    {
        $keys = explode('.', $offset);

        return $this->recursiveGet($keys, $this->values);
    }

    public function offsetSet($offset, $value)
    {
        $keys = explode('.', $offset);

        $this->recursiveSet($keys, $this->values, $value);
    }

    public function offsetUnset($offset)
    {
        $this[$offset] = null;
    }

    /**
     * Merge metadata into the current metadata instance.
     *
     * @param array $metadata
     */
    public function setMany(array $metadata)
    {
        $this->values = array_merge($this->values, $metadata);
    }

    /**
     * @return array
     */
    public function toArray()
    {
        return $this->values;
    }

    private function recursiveGet($keys, $values)
    {
        $key = array_shift($keys);

        if (!is_array($values)) {
            return;
        }

        if (!isset($values[$key])) {
            return;
        }

        if (empty($keys)) {
            return $values[$key];
        }

        return $this->recursiveGet($keys, $values[$key]);
    }

    private function recursiveExist($keys, $values)
    {
        $key = array_shift($keys);

        if (!is_array($values)) {
            return false;
        }

        if (!isset($values[$key])) {
            return false;
        }

        if (empty($keys)) {
            return true;
        }

        return $this->recursiveExist($keys, $values[$key]);
    }

    private function recursiveSet($keys, &$values, $value)
    {
        $key = array_shift($keys);

        if (!is_array($values)) {
            $values = [];
        }

        if (empty($keys)) {
            $values[$key] = $value;

            return;
        }

        if (!isset($values[$key])) {
            $values[$key] = [];
        }

        $this->recursiveSet($keys, $values[$key], $value);
    }
}
<?php

namespace Couscous\Model;

use Couscous\Model\WatchList\WatchList;
use Symfony\Component\Finder\Finder;

/**
 * Project containing files.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class Project
{
    /**
     * Directory containing the sources files to process.
     *
     * @var string
     */
    public $sourceDirectory;

    /**
     * Directory in which to generate the website.
     *
     * @var string
     */
    public $targetDirectory;

    /**
     * @var Metadata
     */
    public $metadata;

    /**
     * If true then we are in "preview" mode and we are regenerating the website.
     *
     * Use this to prevent doing anything costly twice so that the regeneration is faster,
     * e.g. downloading filesâ€¦
     *
     * @var bool
     */
    public $regenerate = false;

    /**
     * @var WatchList
     */
    public $watchlist;

    /**
     * Files that will be written to disk at the end of the generation.
     *
     * @var File[]
     */
    protected $files = [];

    public function __construct($sourceDirectory, $targetDirectory)
    {
        $this->sourceDirectory = $sourceDirectory;
        $this->targetDirectory = $targetDirectory;
        $this->watchlist = new WatchList();
        $this->metadata = new Metadata();
    }

    public function addFile(File $file)
    {
        $this->files[$file->relativeFilename] = $file;
    }

    public function removeFile(File $file)
    {
        unset($this->files[$file->relativeFilename]);
    }

    public function replaceFile(File $oldFile, File $newFile)
    {
        $this->removeFile($oldFile);
        $this->addFile($newFile);
    }

    /**
     * @return File[]
     */
    public function getFiles()
    {
        return $this->files;
    }

    /**
     * @param string $class
     *
     * @return File[] Instances of $class
     */
    public function findFilesByType($class)
    {
        if (!class_exists($class)) {
            throw new \InvalidArgumentException(sprintf(
                "The class %s doesn't exist",
                $class
            ));
        }

        return array_filter($this->files, function (File $file) use ($class) {
            return $file instanceof $class;
        });
    }

    /**
     * Returns a Finder correctly set up for searching in source files.
     *
     * @return Finder
     */
    public function sourceFiles()
    {
        $includedDirectories = $this->metadata['include'] ? $this->metadata['include'] : [];

        // To be sure that included directories are under the source one
        if (!empty($includedDirectories)) {
            array_walk($includedDirectories, function (&$item) {
                $item = $this->sourceDirectory.'/'.$item;
            });
        }

        $excludedDirectories = new ExcludeList($this->metadata['exclude'] ? $this->metadata['exclude'] : []);

        if (is_file($this->sourceDirectory.'/.gitignore')) {
            $excludedDirectories->addEntries(file($this->sourceDirectory.'/.gitignore'));
        }

        $finder = new Finder();
        $finder->files()
            ->followLinks()
            ->in(!empty($includedDirectories) ? $includedDirectories : $this->sourceDirectory)
            ->ignoreDotFiles(true);

        $excludedDirectories
            ->addEntry('.couscous')
            ->excludeFromFinder($finder);

        return $finder;
    }
}
<?php

namespace Couscous\Model;

/**
 * Generic implementation that reads a file lazily.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class LazyFile extends File
{
    private $fullFilename;

    public function __construct($fullFilename, $relativeFilename)
    {
        $this->fullFilename = $fullFilename;

        parent::__construct($relativeFilename);
    }

    public function getContent()
    {
        return file_get_contents($this->fullFilename);
    }
}
<?php

namespace Couscous\Model;

use Symfony\Component\Finder\Finder;

class ExcludeList
{
    /**
     * @var string[]
     */
    private $excluded;

    public function __construct(array $exclude = [])
    {
        $this->excluded = $exclude;
    }

    public function addEntry($entry)
    {
        $this->excluded[] = $entry;

        return $this;
    }

    public function addEntries(array $entries)
    {
        $this->excluded = array_merge($this->excluded, $entries);

        return $this;
    }

    public function contains($needle)
    {
        return in_array($needle, $this->excluded);
    }

    public function toArray()
    {
        $excluded = $this->excluded;
        $excluded = array_filter($excluded, [$this, 'keepEntry']);
        $excluded = array_map([$this, 'sanitizeEntry'], $excluded);
        $excluded = array_map(function ($entry) {
            return trim($entry, '/');
        }, $excluded);

        return array_values(array_unique($excluded));
    }

    public function excludeFromFinder(Finder $finder)
    {
        $finder->exclude($this->toArray());

        return $this;
    }

    private function keepEntry($entry)
    {
        switch (true) {
            case !is_string($entry) && !is_numeric($entry):
            case $entry === '':
            case preg_match('/^[#!]/', $entry) > 0:
            case strpos($entry, '*') !== false:
                return false;

            default:
                return true;
        }
    }

    private function sanitizeEntry($entry)
    {
        return preg_replace(
            '/\\\(\s)$/',
            '$1',
            preg_replace(
                '/(?<!\\\)(\s)$/',
                '',
                $entry
            )
        );
    }
}
<?php

namespace Couscous\Model\WatchList;

/**
 * Watch a file or a series of files.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
interface WatchInterface
{
    /**
     * Returns the list of files that have changed.
     *
     * @return string[]
     */
    public function getChangedFiles();
}
<?php

namespace Couscous\Model\WatchList;

/**
 * Watch a file.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class FileWatch implements WatchInterface
{
    private $filename;
    private $time;

    /**
     * @param string $filename
     */
    public function __construct($filename)
    {
        $this->filename = $filename;
        $this->time = time();
    }

    public function getChangedFiles()
    {
        if (!file_exists($this->filename)) {
            return [];
        }

        if (filemtime($this->filename) > $this->time) {
            return [$this->filename];
        }

        return [];
    }
}
<?php

namespace Couscous\Model\WatchList;

use Symfony\Component\Finder\Finder;

/**
 * List of files or directories to watch for continuous regeneration.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class WatchList
{
    private $watches;

    public function watchFile($filename)
    {
        $this->watches[] = new FileWatch($filename);
    }

    public function watchFiles(Finder $finder)
    {
        $this->watches[] = new FinderWatch($finder);
    }

    public function watchDirectory($directory)
    {
        $finder = new Finder();
        $finder->files()
            ->in($directory);

        $this->watches[] = new FinderWatch($finder);
    }

    public function getChangedFiles()
    {
        $files = array_map(function (WatchInterface $watch) {
            return $watch->getChangedFiles();
        }, $this->watches);

        $files = call_user_func_array('array_merge', $files);

        return array_unique($files);
    }
}
<?php

namespace Couscous\Model\WatchList;

use Symfony\Component\Finder\Finder;
use Symfony\Component\Finder\SplFileInfo;

/**
 * Watch several files with a Symfony Finder object.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class FinderWatch implements WatchInterface
{
    private $finder;
    private $date;

    public function __construct(Finder $finder)
    {
        $this->finder = clone $finder;
        $this->date = date('Y-m-d H:i:s');
    }

    public function getChangedFiles()
    {
        $finder = clone $this->finder;
        $finder->date('after '.$this->date);

        return array_map(function (SplFileInfo $file) {
            return $file->getPathname();
        }, iterator_to_array($finder));
    }
}
<?php

namespace Couscous;

use Couscous\CommandRunner\CommandException;
use Couscous\CommandRunner\Git;
use Couscous\Model\Project;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Filesystem\Filesystem;
use Symfony\Component\Finder\Finder;

/**
 * Deploy the website.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class Deployer
{
    /**
     * @var Filesystem
     */
    private $filesystem;

    /**
     * @var Git
     */
    private $git;

    public function __construct(Filesystem $filesystem, Git $git)
    {
        $this->filesystem = $filesystem;
        $this->git = $git;
    }

    /**
     * @param Project         $project
     * @param OutputInterface $output
     * @param string          $repositoryUrl Repository in which to deploy the files.
     * @param string          $branch        Git branch in which to deploy the files.
     */
    public function deploy(Project $project, OutputInterface $output, $repositoryUrl, $branch)
    {
        $output->writeln('<comment>Deploying the website</comment>');

        $directory = $project->targetDirectory;
        $tmpDirectory = $this->createTempDirectory();

        $this->cloneRepository($output, $repositoryUrl, $tmpDirectory);

        $this->checkoutBranch($output, $branch, $tmpDirectory);

        $this->copyGeneratedFiles($output, $directory, $tmpDirectory);

        if ($this->git->hasUncommittedChanges($tmpDirectory)) {
            $this->commitChanges($output, $tmpDirectory);

            $this->pushBranch($output, $branch, $tmpDirectory);
        } else {
            $output->writeln('<comment>Skipping deploy, no changes detected</comment>');
        }

        $this->deleteTempDirectory($tmpDirectory);
    }

    private function createTempDirectory()
    {
        $tempFile = tempnam(sys_get_temp_dir(), 'couscous_deploy_');
        // Turn the temp file into a temp directory
        $this->filesystem->remove($tempFile);
        $this->filesystem->mkdir($tempFile);

        return $tempFile;
    }

    private function cloneRepository(OutputInterface $output, $repositoryUrl, $tmpDirectory)
    {
        $output->writeln("Cloning <info>$repositoryUrl</info> in <info>$tmpDirectory</info>");

        $this->git->cloneRepository($repositoryUrl, $tmpDirectory);
    }

    private function checkoutBranch(OutputInterface $output, $branch, $tmpDirectory)
    {
        $output->writeln("Checking out branch <info>$branch</info>");

        try {
            $this->git->checkoutOriginBranch($tmpDirectory, $branch);
        } catch (CommandException $e) {
            // The branch doesn't exist yet, so we create it
            try {
                $this->git->createBranch($tmpDirectory, $branch);
            } catch (CommandException $e) {
                throw new \RuntimeException("Unable to create the branch '$branch'".PHP_EOL.$e->getMessage());
            }
        }
    }

    private function copyGeneratedFiles(OutputInterface $output, $directory, $tmpDirectory)
    {
        $output->writeln('Copying generated website');

        $finder = new Finder();
        $finder->files()
            ->in($tmpDirectory)
            ->ignoreVCS(true);
        $this->filesystem->remove($finder);

        $this->filesystem->mirror($directory, $tmpDirectory);
    }

    private function commitChanges(OutputInterface $output, $tmpDirectory)
    {
        $output->writeln('Committing changes');

        $this->git->commitAllChanges($tmpDirectory, 'Website generation with Couscous');
    }

    private function pushBranch(OutputInterface $output, $branch, $tmpDirectory)
    {
        $output->writeln("Pushing <info>$branch</info> (GitHub may ask you to login)");

        $this->git->push($tmpDirectory, $branch);
    }

    private function deleteTempDirectory($dir)
    {
        $this->filesystem->remove($dir);
    }
}
<?php

namespace Couscous\Application;

use DI\Container;
use DI\ContainerBuilder;
use Symfony\Component\Finder\Finder;
use Symfony\Component\Finder\SplFileInfo;

/**
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ContainerFactory
{
    /**
     * @return Container
     */
    public function createContainer()
    {
        $builder = new ContainerBuilder();

        $builder->addDefinitions(__DIR__.'/config.php');

        $moduleConfigs = new Finder();
        $moduleConfigs->files()
            ->in(__DIR__.'/../Module')
            ->path('/.+/')
            ->name('config.php');

        foreach ($moduleConfigs as $moduleConfig) {
            /** @var SplFileInfo $moduleConfig */
            $builder->addDefinitions($moduleConfig->getPathname());
        }

        return $builder->build();
    }
}
<?php

namespace Couscous\Application\Cli;

use Couscous\Generator;
use Couscous\Model\Project;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * Generates the website.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class GenerateCommand extends Command
{
    /**
     * @var Generator
     */
    private $generator;

    public function __construct(Generator $generator)
    {
        $this->generator = $generator;

        parent::__construct();
    }

    protected function configure()
    {
        $this
            ->setName('generate')
            ->setDescription('Generate the website')
            ->addArgument(
                'source',
                InputArgument::OPTIONAL,
                'Repository you want to generate.',
                getcwd()
            )
            ->addOption(
                'target',
                null,
                InputOption::VALUE_REQUIRED,
                'Target directory in which to generate the files.',
                getcwd().'/.couscous/generated'
            )
            ->addOption(
                'config',
                null,
                InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY,
                'If specified will override entries in couscous.yml (key=value)',
                []
            );
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $cliConfig = $input->getOption('config');

        $project = new Project($input->getArgument('source'), $input->getOption('target'));

        $project->metadata['cliConfig'] = $cliConfig;

        $this->generator->generate($project, $output);
    }
}
<?php

namespace Couscous\Application\Cli;

use Couscous\Generator;
use Couscous\Model\Project;
use RuntimeException;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Process\Process;

/**
 * Preview the website.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class PreviewCommand extends Command
{
    /**
     * @var Generator
     */
    private $generator;

    public function __construct(Generator $generator)
    {
        $this->generator = $generator;

        parent::__construct();
    }

    /**
     * {@inheritdoc}
     */
    protected function configure()
    {
        $this
            ->setName('preview')
            ->setDescription('Starts a webserver to preview the website')
            ->addArgument(
                'address',
                InputArgument::OPTIONAL,
                'Address:port',
                '127.0.0.1:8000'
            )
            ->addArgument(
                'source',
                InputArgument::OPTIONAL,
                'Repository you want to generate.',
                getcwd()
            )
            ->addOption(
                'target',
                null,
                InputOption::VALUE_REQUIRED,
                'Target directory in which to generate the files.',
                getcwd().'/.couscous/generated'
            )
            ->addOption(
                'livereload',
                null,
                InputOption::VALUE_OPTIONAL,
                'If set livereload server is launched from the specified path (global livereload by default)'
            )
            ->addOption(
                'config',
                null,
                InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY,
                'If specified will override entries in couscous.yml (key=value)',
                []
            );
    }

    /**
     * {@inheritdoc}
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $cliConfig = $input->getOption('config');

        if (!$this->isSupported()) {
            $output->writeln('<error>PHP 5.4 or above is required to run the internal webserver</error>');

            return 1;
        }

        $sourceDirectory = $input->getArgument('source');
        $targetDirectory = $input->getOption('target');

        if ($input->hasParameterOption('--livereload')) {
            if ($input->getOption('livereload') === null) {
                $input->setOption('livereload', 'livereload');
            }

            if (!$this->isFound($input->getOption('livereload'))) {
                $output->writeln(
                    '<error>Impossible to launch Livereload, '
                    .'did you forgot to install it with "pip install livereload" (sudo maybe required)?</error>'
                );

                return 1;
            }

            $this->startLivereload($input->getOption('livereload'), $output, $sourceDirectory, $targetDirectory);
        }

        $watchlist = $this->generateWebsite($output, $sourceDirectory, $targetDirectory, $cliConfig);

        $serverProcess = $this->startWebServer($input, $output, $targetDirectory);
        $throwOnServerStop = true;

        if (function_exists('pcntl_signal')) {
            declare(ticks=1);

            $handler = function ($signal) use ($serverProcess, $output, &$throwOnServerStop) {
                $throwOnServerStop = !$this->stopWebServer($serverProcess, $output, $signal);
            };

            foreach ([SIGINT, SIGTERM] as $signal) {
                pcntl_signal($signal, $handler);
            }
        }

        // Watch for changes
        while ($serverProcess->isRunning()) {
            $files = $watchlist->getChangedFiles();
            if (count($files) > 0) {
                $output->writeln('');
                $output->write(sprintf('<comment>%d file(s) changed: regenerating</comment>', count($files)));
                $output->writeln(sprintf(' (%s)', $this->fileListToDisplay($files, $sourceDirectory)));

                $watchlist = $this->generateWebsite($output, $sourceDirectory, $targetDirectory, $cliConfig, true);
            }

            sleep(1);
        }

        if ($throwOnServerStop) {
            throw new RuntimeException('The HTTP server has stopped: '.PHP_EOL.$serverProcess->getErrorOutput());
        }

        return 0;
    }

    private function generateWebsite(
        OutputInterface $output,
        $sourceDirectory,
        $targetDirectory,
        $cliConfig,
        $regenerate = false
    ) {
        $project = new Project($sourceDirectory, $targetDirectory);

        $project->metadata['cliConfig'] = $cliConfig;
        $project->metadata['preview'] = true;

        $project->regenerate = $regenerate;

        $this->generator->generate($project, $output);

        return $project->watchlist;
    }

    private function startWebServer(InputInterface $input, OutputInterface $output, $targetDirectory)
    {
        $processArguments = [PHP_BINARY, '-S', $input->getArgument('address')];

        $process = new Process($processArguments);
        $process->setWorkingDirectory($targetDirectory);
        $process->setTimeout(null);
        $process->start();

        $output->writeln(sprintf('Server running on <comment>http://%s</comment>', $input->getArgument('address')));

        return $process;
    }

    private function stopWebServer(Process $serverProcess, OutputInterface $output, $signal = null)
    {
        $signal = $signal ?: SIGTERM;

        if ($serverProcess->isRunning()) {
            $output->writeln(sprintf('Killing server with signal <comment>%s</comment>', $signal));

            $serverProcess->stop(0, $signal);
        }

        if ($serverProcess->isRunning() === false) {
            $output->writeln(sprintf('Server was killed with signal <comment>%s</comment>', $signal));

            return true;
        }

        $output->writeln(sprintf('Unable to kill the server with signal <comment>%s</comment>', $signal));

        return false;
    }

    private function startLivereload($executablePath, OutputInterface $output, $sourceDirectory, $targetDirectory)
    {
        $processArguments = [$executablePath, $targetDirectory, '-w', '3'];

        $process = new Process($processArguments);
        $process->setWorkingDirectory($sourceDirectory);
        $process->setTimeout(null);
        $process->start();

        $output->writeln('<info>Livereload launched!</info>');
    }

    private function isSupported()
    {
        if (version_compare(phpversion(), '5.4.0', '<')) {
            return false;
        }

        return true;
    }

    private function isFound($executablePath)
    {
        if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
            $folders = explode(';', getenv('PATH'));
        } else {
            $folders = explode(':', getenv('PATH'));
        }

        foreach ($folders as $folder) {
            if (is_executable(realpath($folder.'/'.$executablePath))) {
                return true;
            }
        }

        return false;
    }

    private function fileListToDisplay(array $files, $sourceDirectory)
    {
        $files = array_map(function ($file) use ($sourceDirectory) {
            return substr($file, strlen($sourceDirectory) + 1);
        }, $files);

        $str = implode(', ', $files);

        if (strlen($str) > 60) {
            $str = substr($str, 0, 60).'â€¦';
        }

        return $str;
    }
}
<?php

namespace Couscous\Application\Cli;

use Couscous\CommandRunner\CommandRunner;
use Couscous\Deployer;
use Couscous\Generator;
use Couscous\Model\Project;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * Generate and deploy the website after successful Travis build.
 *
 * @author Gaultier Boniface <gboniface@wysow.fr>
 */
class TravisAutoDeployCommand extends Command
{
    /**
     * @var Generator
     */
    private $generator;

    /**
     * @var Deployer
     */
    private $deployer;

    /**
     * @var CommandRunner
     */
    private $commandRunner;

    public function __construct(Generator $generator, Deployer $deployer, CommandRunner $commandRunner)
    {
        $this->generator = $generator;
        $this->deployer = $deployer;
        $this->commandRunner = $commandRunner;

        parent::__construct();
    }

    /**
     * {@inheritdoc}
     */
    protected function configure()
    {
        $this
            ->setName('travis-auto-deploy')
            ->setDescription('Automatically generate and deploy the website after a successful Travis build')
            ->addArgument(
                'source',
                InputArgument::OPTIONAL,
                'Repository you want to generate.',
                getcwd()
            )
            ->addOption(
                'php-version',
                null,
                InputOption::VALUE_REQUIRED,
                'Specify for which php version you want to deploy documentation, mainly to avoid multiple deploys',
                '7.0'
            )
            ->addOption(
                'branch',
                null,
                InputOption::VALUE_REQUIRED,
                'Target branch in which to deploy the website.',
                'gh-pages'
            );
    }

    /**
     * {@inheritdoc}
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $sourceDirectory = $input->getArgument('source');
        $repositoryUrl = sprintf('https://%s@%s', getenv('GH_TOKEN'), getenv('GH_REF'));
        $targetBranch = $input->getOption('branch');

        $repository = new Project($sourceDirectory, getcwd().'/.couscous/generated');

        // verify some env variables
        $travisBranch = getenv('TRAVIS_BRANCH');

        if ($travisBranch !== 'master') {
            $output->writeln('<comment>[NOT DEPLOYED] Deploying Couscous only for master branch</comment>');

            return;
        }

        $isPullRequest = (int) getenv('TRAVIS_PULL_REQUEST') > 0 ? true : false;

        if ($isPullRequest) {
            $output->writeln('<comment>[NOT DEPLOYED] Not deploying Couscous for pull requests</comment>');

            return;
        }

        // getting current php version to only deploy once
        $currentPhpVersion = getenv('TRAVIS_PHP_VERSION');
        if ($input->getOption('php-version') != $currentPhpVersion) {
            $output->writeln('<comment>This version of the documentation is already deployed</comment>');

            return;
        }

        // set git user data
        $output->writeln('<info>Setting up git user</info>');
        $this->commandRunner->run('git config --global user.name "${GIT_NAME}"');
        $this->commandRunner->run('git config --global user.email "${GIT_EMAIL}"');

        // Generate the website
        $this->generator->generate($repository, $output);

        $output->writeln('');

        // Deploy it
        $this->deployer->deploy($repository, $output, $repositoryUrl, $targetBranch);
    }
}
<?php

namespace Couscous\Application\Cli;

use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Filesystem\Filesystem;

/**
 * Clear all files generated by Couscous.
 *
 * Useful if there's any kind of problem with Couscous generation.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ClearCommand extends Command
{
    /**
     * @var Filesystem
     */
    private $filesystem;

    public function __construct(Filesystem $filesystem)
    {
        $this->filesystem = $filesystem;

        parent::__construct();
    }

    protected function configure()
    {
        $this
            ->setName('clear')
            ->setDescription('Clear all files generated by Couscous');
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $dir = getcwd().'/.couscous';

        if (file_exists($dir)) {
            $output->writeln("<comment>Deleting folder $dir</comment>");
            $this->filesystem->remove($dir);
        } else {
            $output->writeln('<comment>Nothing to clear</comment>');
        }
    }
}
<?php

namespace Couscous\Application\Cli;

use Couscous\CommandRunner\Git;
use Couscous\Deployer;
use Couscous\Generator;
use Couscous\Model\Project;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Filesystem\Filesystem;

/**
 * Generate and deploy the website.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class DeployCommand extends Command
{
    /**
     * @var Generator
     */
    private $generator;

    /**
     * @var Deployer
     */
    private $deployer;

    /**
     * @var Filesystem
     */
    private $filesystem;

    /**
     * @var Git
     */
    private $git;

    public function __construct(Generator $generator, Deployer $deployer, Filesystem $filesystem, Git $git)
    {
        $this->generator = $generator;
        $this->deployer = $deployer;
        $this->filesystem = $filesystem;
        $this->git = $git;

        parent::__construct();
    }

    /**
     * {@inheritdoc}
     */
    protected function configure()
    {
        try {
            $remoteUrl = $this->git->getRemoteUrl();
        } catch (\Exception $e) {
            $remoteUrl = null;
        }

        $this
            ->setName('deploy')
            ->setDescription('Generate and deploy the website')
            ->addArgument(
                'source',
                InputArgument::OPTIONAL,
                'Repository you want to generate.',
                getcwd()
            )
            ->addOption(
                'repository',
                null,
                InputOption::VALUE_REQUIRED,
                'Target repository in which to deploy the website.',
                $remoteUrl
            )
            ->addOption(
                'branch',
                null,
                InputOption::VALUE_REQUIRED,
                'Target branch in which to deploy the website.'
            )
            ->addOption(
                'config',
                null,
                InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY,
                'If specified will override entries in couscous.yml (key=value)',
                []
            );
    }

    /**
     * {@inheritdoc}
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $sourceDirectory = $input->getArgument('source');
        $repositoryUrl = $input->getOption('repository');
        $targetBranch = $input->getOption('branch');
        $cliConfig = $input->getOption('config');

        $project = new Project($sourceDirectory, getcwd().'/.couscous/generated');

        $project->metadata['cliConfig'] = $cliConfig;

        // Generate the website
        $this->generator->generate($project, $output);

        // If no branch was provided, use the configured one or the default
        if (!$targetBranch) {
            $targetBranch = isset($project->metadata['branch']) ? $project->metadata['branch'] : 'gh-pages';
        }

        $output->writeln('');

        // Deploy it
        $this->deployer->deploy($project, $output, $repositoryUrl, $targetBranch);
    }
}
<?php

namespace Couscous\Application\Cli;

use Humbug\SelfUpdate\Updater;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * Phar file self update.
 *
 * @author Gaultier Boniface <gboniface@wysow.fr>
 */
class SelfUpdateCommand extends Command
{
    /**
     * {@inheritdoc}
     */
    protected function configure()
    {
        $this
            ->setName('self-update')
            ->setAliases(['selfupdate'])
            ->setDescription('Automatically update the phar file if needed.');
    }

    /**
     * {@inheritdoc}
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $updater = new Updater(null, false);
        $updater->getStrategy()->setPharUrl('http://couscous.io/couscous.phar');
        $updater->getStrategy()->setVersionUrl('http://couscous.io/couscous.version');

        $result = $updater->update();
        $result ? $output->writeln('Phar file updated successfully!') : $output->writeln('No need to update.');
    }
}
<?php

namespace Couscous\Application\Cli;

use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * Initialize a new Couscous template.
 *
 * @author Ross J. Hagan <rossjhagan@gmail.com>
 */
class InitTemplateCommand extends Command
{
    protected function configure()
    {
        $this
            ->setName('init:template')
            ->setDescription('Initialize a new Couscous template');

        $this->addArgument(
            'template_name',
            InputArgument::REQUIRED,
            'Template name'
        )
        ->addArgument(
            'directory',
            InputArgument::OPTIONAL,
            'Directory name',
            'website'
        );
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $fileExtension = '.twig';

        $dirName = $input->getArgument('directory');
        $directory = getcwd().'/'.$dirName.'/';
        $templateName = $input->getArgument('template_name').$fileExtension;

        $fileLocation = $directory.$templateName;
        $fileExists = file_exists($fileLocation);

        if (!file_exists(getcwd().'/'.$dirName)) {
            $output->writeln('<comment>Creating directory.</comment>');
            mkdir(getcwd().'/'.$dirName);
        }

        if ($fileExists) {
            $output->writeln('<error>That template exists at '.$fileLocation.', so nothing has been changed.</error>');
            $output->writeln('<error>Try another name!</error>');

            return;
        }

        if (!$fileExists) {
            $output->writeln('<comment>Initialising template.</comment>');
            $template = <<<'HTML'
<!DOCTYPE html>
<html>
    <head>
        <title>My project!</title>
    </head>
    <body>

        {% block content %}

        <p>
            Don't forget you can add variables into your YAML front matter, or in your couscous.yml
            then use them inside double curly braces!
        </p>

        <p>
            Also, set up a baseUrl in your couscous.yml and use it
            to <a href="{{ baseUrl }}/link/in/the/site">link to another page</a> in your site
        </p>

            {{ content|raw }}

        {% endblock %}

    </body>
</html>
HTML;
            file_put_contents($fileLocation, $template);
        }
    }
}
<?php

use Psr\Log\LogLevel;
use Symfony\Component\Console\Output\OutputInterface;

return [

    'steps' => [
        DI\get('Couscous\Module\Config\Step\SetDefaultConfig'),
        DI\get('Couscous\Module\Config\Step\LoadConfig'),
        DI\get('Couscous\Module\Config\Step\OverrideConfigFromCLI'),
        DI\get('Couscous\Module\Config\Step\OverrideBaseUrlForPreview'),

        DI\get('Couscous\Module\Scripts\Step\ExecuteBeforeScripts'),

        DI\get('Couscous\Module\Template\Step\UseDefaultTemplate'),
        DI\get('Couscous\Module\Template\Step\FetchRemoteTemplate'),
        DI\get('Couscous\Module\Template\Step\ValidateTemplateDirectory'),

        DI\get('Couscous\Module\Bower\Step\RunBowerInstall'),

        DI\get('Couscous\Module\Markdown\Step\LoadMarkdownFiles'),
        DI\get('Couscous\Module\Template\Step\LoadAssets'),
        DI\get('Couscous\Module\Core\Step\AddImages'),
        DI\get('Couscous\Module\Core\Step\AddCname'),

        DI\get('Couscous\Module\Core\Step\AddFileNameToMetadata'),

        DI\get('Couscous\Module\Markdown\Step\ParseMarkdownFrontMatter'),
        DI\get('Couscous\Module\Markdown\Step\ProcessMarkdownFileName'),
        DI\get('Couscous\Module\Markdown\Step\RewriteMarkdownLinks'),
        DI\get('Couscous\Module\Markdown\Step\RenderMarkdown'),
        DI\get('Couscous\Module\Markdown\Step\CreateHeadingIds'),

        DI\get('Couscous\Module\Template\Step\AddPageListToLayoutVariables'),
        DI\get('Couscous\Module\Template\Step\ProcessTwigLayouts'),

        DI\get('Couscous\Module\Template\Step\AddLivereloadSnippet'),

        DI\get('Couscous\Module\Core\Step\ClearTargetDirectory'),
        DI\get('Couscous\Module\Core\Step\WriteFiles'),

        DI\get('Couscous\Module\Scripts\Step\ExecuteAfterScripts'),
    ],

    'Couscous\Generator' => DI\object()
        ->constructorParameter('steps', DI\get('steps')),

    'application' => DI\object('Symfony\Component\Console\Application')
        ->method('add', DI\get('Couscous\Application\Cli\GenerateCommand'))
        ->method('add', DI\get('Couscous\Application\Cli\PreviewCommand'))
        ->method('add', DI\get('Couscous\Application\Cli\DeployCommand'))
        ->method('add', DI\get('Couscous\Application\Cli\ClearCommand'))
        ->method('add', DI\get('Couscous\Application\Cli\SelfUpdateCommand'))
        ->method('add', DI\get('Couscous\Application\Cli\TravisAutoDeployCommand'))
        ->method('add', DI\get('Couscous\Application\Cli\InitTemplateCommand')),

    'Symfony\Component\Console\Logger\ConsoleLogger' => DI\object()
        ->constructorParameter('verbosityLevelMap', [
            // Custom verbosity map
            LogLevel::EMERGENCY => OutputInterface::VERBOSITY_NORMAL,
            LogLevel::ALERT     => OutputInterface::VERBOSITY_NORMAL,
            LogLevel::CRITICAL  => OutputInterface::VERBOSITY_NORMAL,
            LogLevel::ERROR     => OutputInterface::VERBOSITY_NORMAL,
            LogLevel::WARNING   => OutputInterface::VERBOSITY_NORMAL,
            LogLevel::NOTICE    => OutputInterface::VERBOSITY_NORMAL,
            LogLevel::INFO      => OutputInterface::VERBOSITY_VERBOSE,
            LogLevel::DEBUG     => OutputInterface::VERBOSITY_VERY_VERBOSE,
        ]),

];
<?php

namespace Couscous;

use Couscous\Model\Project;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Filesystem\Filesystem;

/**
 * Generates the website.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class Generator
{
    /**
     * @var Filesystem
     */
    private $filesystem;

    /**
     * @var Step[]
     */
    private $steps;

    /**
     * @param Filesystem $filesystem
     * @param Step[]     $steps
     */
    public function __construct(Filesystem $filesystem, array $steps)
    {
        $this->filesystem = $filesystem;
        $this->steps = $steps;
    }

    public function generate(Project $project, OutputInterface $output)
    {
        $output->writeln(sprintf(
            '<comment>Generating %s to %s</comment>',
            $project->sourceDirectory,
            $project->targetDirectory
        ));

        $this->filesystem->mkdir($project->targetDirectory);

        foreach ($this->steps as $step) {
            $step->__invoke($project);
        }
    }
}
<?php

// autoload.php @generated by Composer

require_once __DIR__ . '/composer/autoload_real.php';

return ComposerAutoloaderInit0d10fbe001cdd2d71e01f7951179cdaf::getLoader();
<?php

use Sami\Sami;
use Sami\Version\GitVersionCollection;
use Symfony\Component\Finder\Finder;

$versions = GitVersionCollection::create(__DIR__)
    ->addFromTags('*.*.0');

return new Sami(
    Finder::create()
        ->files()
        ->name('*.php')
        ->in(__DIR__ . '/src/lib'),
    array(
        'build_dir' => __DIR__ . '/../docs/%version%',
        'cache_dir' => sys_get_temp_dir() . '/lib-path',
        'theme' => 'github',
        'versions' => $versions
    )
);
<?php

namespace Phine\Path;

use Phine\Exception\Exception;
use Phine\Path\Exception\PathException;

/**
 * Provides utility methods for file system paths.
 *
 * @author Kevin Herrera <kevin@herrerea.io>
 */
class Path
{
    /**
     * Canonicalizes the file system path.
     *
     * @param string $path The path to canoncalize.
     *
     * @return string The canoncalized path.
     */
    public static function canonical($path)
    {
        $path = self::split($path);
        $canon = array();

        foreach ($path as $segment) {
            if ('..' === $segment) {
                array_pop($canon);
            } elseif ('.' !== $segment) {
                $canon[] = $segment;
            }
        }

        return self::join($canon);
    }

    /**
     * Copies an existing file or directory path to a destination.
     *
     * @param string  $from      The path to copy from.
     * @param string  $to        The path to copy to.
     * @param boolean $overwrite Overwrite existing files?
     *
     * @return integer The number of files or empty directories copied.
     *
     * @throws Exception
     * @throws PathException If the path could not be copied.
     */
    public static function copy($from, $to, $overwrite = true)
    {
        if (!file_exists($from)) {
            throw PathException::createUsingFormat(
                'The path "%s" does not exist.',
                $from
            );
        }

        $count = 0;

        if (is_file($from)) {
            if (file_exists($to) && !$overwrite) {
                return $count;
            }

            if (!@copy($from, $to)) {
                throw PathException::createUsingLastError();
            }

            $count++;
        } else {
            if (!file_exists($to) && !@mkdir($to)) {
                throw PathException::createUsingLastError();
            }

            if (!($handle = @opendir($from))) {
                throw PathException::createUsingLastError();
            }

            $empty = true;

            while (false !== ($entry = readdir($handle))) {
                if (('.' === $entry) || ('..' === $entry)) {
                    continue;
                }

                $empty = false;

                $count += self::copy(
                    $from . DIRECTORY_SEPARATOR . $entry,
                    $to . DIRECTORY_SEPARATOR . $entry,
                    $overwrite
                );
            }

            if ($empty) {
                $count++;
            }

            closedir($handle);
        }

        return $count;
    }

    /**
     * Returns the current working directory path.
     *
     * The `getcwd()` function may return `false` if the parent of the current
     * working directory is not readable. To workaround this issue, this method
     * will check environment variables that may be set by the operating system
     * for the current path.
     *
     * @param boolean $env Only use the environment variables?
     *
     * @return string The current working directory path.
     *
     * @throws Exception
     * @throws PathException If the path could not be found.
     */
    public static function current($env = false)
    {
        if ($env || (false === ($cwd = getcwd()))) {
            if (isset($_SERVER['PWD'])) {
                $cwd = $_SERVER['PWD'];
            } elseif (isset($_SERVER['CD'])) {
                $cwd = $_SERVER['CD'];
            } else {
                throw new PathException('The current working directory path could not be found.');
            }
        }

        return $cwd;
    }

    /**
     * Checks if a file system path is absolute.
     *
     * @param string $path The path to check.
     *
     * @return boolean Returns `true` if absolute, `false` if not.
     */
    public static function isAbsolute($path)
    {
        return (preg_match('/^([\\\\\/]|[a-zA-Z]\:[\\\\\/])/', $path)
            || (false !== filter_var($path, FILTER_VALIDATE_URL)));
    }

    /**
     * Checks if a path is a local file system path.
     *
     * @param string $path The path to check.
     *
     * @return boolean Returns `true` if local, `false` if not.
     */
    public static function isLocal($path)
    {
        return ((false === filter_var($path, FILTER_VALIDATE_URL))
            && !preg_match('/^(?:\\\\|\/\/)/', $path));
    }

    /**
     * Joins a split file system path.
     *
     * @param array $path The split path.
     *
     * @return string The joined path.
     */
    public static function join(array $path)
    {
        return join(DIRECTORY_SEPARATOR, $path);
    }

    /**
     * Recursively removes a file system path.
     *
     * @param string $path The path to remove.
     *
     * @return integer The number of paths removed.
     *
     * @throws Exception
     * @throws PathException If the path could not be removed.
     */
    public static function remove($path)
    {
        $removed = 0;

        if (file_exists($path)) {
            if (is_dir($path)) {
                if (false === ($handle = @opendir($path))) {
                    throw PathException::createUsingLastError();
                }

                while (false !== ($item = readdir($handle))) {
                    if (('.' === $item) || ('..' === $item)) {
                        continue;
                    }

                    $removed += self::remove($path . DIRECTORY_SEPARATOR . $item);
                }

                closedir($handle);

                if (!@rmdir($path)) {
                    throw PathException::createUsingLastError();
                }
            } elseif (!@unlink($path)) {
                throw PathException::createUsingLastError();
            }

            $removed++;
        }

        return $removed;
    }

    /**
     * Splits the file system path.
     *
     * @param string $path The path to split.
     *
     * @return array The split path.
     */
    public static function split($path)
    {
        return preg_split('/[\\\\\/]+/', $path);
    }
}
<?php

namespace Phine\Path\Exception;

use Phine\Exception\Exception;

/**
 * Exception class for path related errors.
 *
 * @author Kevin Herrera <kevin@herrera.io>
 */
class PathException extends Exception
{
}
<?php

namespace Phine\Phar;

use Phine\Exception\Exception;
use Phine\Phar\Exception\FileException;
use Phine\Phar\File\Writer;
use Phine\Phar\Manifest\Entry;

/**
 * Extracts the contents of an archive.
 *
 * Summary
 * -------
 *
 * The `Extract` class utilizes the `Archive` and `Entry` class to extract
 * one or more files from an archive file, without using the `phar` extension.
 * Unlike the extraction class that is bundled with the default archive stub
 * generated by the extension, heavy error checking is performed in order to
 * prevent memory exhaustion when a corrupted archive is used.
 *
 * Starting
 * --------
 *
 * To create a new instance of this class, you will need to provide a archive:
 *
 *     use Phine\Phar\Extract;
 *     use Phine\Phar\File\Reader;
 *     use Phine\Phar\Archive;
 *
 *     $reader = new Reader('example.phar');
 *     $archive = new Archive($reader);
 *     $extract = new Extract($archive);
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
class Extract
{
    /**
     * The archive file reader.
     *
     * @var Archive
     */
    private $archive;

    /**
     * The list of support compression algorithms.
     *
     * @var array
     */
    private static $compression;

    /**
     * Sets the archive file reader.
     *
     * This method will set the archive file reader that will be used to
     * extract one or more files.
     *
     *     use Phine\Phar\Extract;
     *     use Phine\Phar\File\Reader;
     *     use Phine\Phar\Archive;
     *
     *     $reader = new Reader('example.phar');
     *     $archive = new Archive($reader);
     *     $extract = new Extract($archive);
     *
     * @param Archive $archive The archive file reader.
     *
     * @api
     */
    public function __construct(Archive $archive)
    {
        $this->archive = $archive;
    }

    /**
     * Returns the contents of a file from an archive.
     *
     * Uses an instance of `Entry` to extract and decompress (if necessary)
     * the contents of a file from an archive. Note that an extension may be
     * required (`bz2` or `zlib`) to extract the file.
     *
     *     use Phine\Phar\Extract;
     *
     *     $contents = Extract::extractFile($entry);
     *
     * @param Entry $entry The file information from the archive.
     *
     * @return string The decompressed file contents.
     *
     * @throws Exception
     * @throws FileException If the file could not be decompressed.
     *
     * @api
     */
    public static function extractFile(Entry $entry)
    {
        if (null === self::$compression) {
            self::$compression = array(
                'bzip2' => function_exists('bzdecompress'),
                'gzip' => function_exists('gzinflate'),
            );
        }

        $reader = $entry->getArchive()->getReader();

        $reader->seek($entry->getOffset());

        $contents = $reader->read($entry->getCompressedSize());

        if ($entry->isCompressed(Entry::BZ2)) {
            if (!self::$compression['bzip2']) {
                throw FileException::createUsingFormat(
                    'The "bz2" extension is required to decompress "%s".',
                    $entry->getName()
                );
            }

            $contents = bzdecompress($contents);
        } elseif ($entry->isCompressed(Entry::GZ)) {
            if (!self::$compression['gzip']) {
                throw FileException::createUsingFormat(
                    'The "zlib" extension is required to decompress "%s".',
                    $entry->getName()
                );
            }

            $contents = gzinflate($contents);
        }

        return $contents;
    }

    /**
     * Extracts one or more files to an output directory.
     *
     * If a `$filter` callable is provided, it will be called with each file
     * found in the archive.  If `true` is returned by the filter, the file
     * will not be extracted. If any other value is returned, the file will
     * be extracted.
     *
     *     use Phine\Phar\Manifest\Entry;
     *
     *     $fileCount = $extract->extractTo(
     *         '/path/to/output/dir',
     *         function (Entry $entry) {
     *             if (!preg_match('/Test/', $entry->getName()) {
     *                 return true; // skip this file
     *             }
     *         }
     *     );
     *
     * @param string   $dir               The output directory path.
     * @param callable $filter (optional) The callable used to filter files.
     *
     * @return integer The number of files extracted.
     *
     * @throws Exception
     * @throws FileException If a file could not be extracted.
     *
     * @api
     */
    public function extractTo($dir, $filter = null)
    {
        $files = $this->archive->getEntries();
        $count = 0;

        foreach ($files as $file) {
            if ($filter && (true === $filter($file))) {
                continue;
            }

            $path = $dir . '/' . $file->getName();
            $base = dirname($path);

            if (!is_dir($base)) {
                if (!@mkdir($base, 0755, true)) {
                    throw FileException::createUsingLastError();
                }
            }

            $writer = new Writer($path);
            $writer->write(self::extractFile($file));

            $count++;
        }

        return $count;
    }

    /**
     * Returns the archive for the archive file.
     *
     * This method will return the archive file reader used to extract one or
     * more files.
     *
     *     $archive = $extract->getArchive();
     *
     * @return Archive The archive for the archive file.
     *
     * @api
     */
    public function getArchive()
    {
        return $this->archive;
    }
}
<?php

namespace Phine\Phar;

use Phine\Path\Path;
use Phine\Phar\Exception\ArchiveException;
use Phine\Phar\File\Reader;
use Phine\Phar\Manifest\Entry;

/**
 * Parses archives built using the phar archive format.
 *
 * Summary
 * -------
 *
 * The `Archive` class parses parts of an archive file that uses the [phar
 * file format](http://us3.php.net/manual/en/phar.fileformat.phar.php). It
 * extracts information such as the archive alias, metadata, and
 * [archive](http://us3.php.net/manual/en/phar.fileformat.manifestfile.php)
 * without using the `phar` extension.
 *
 * Starting
 * --------
 *
 * To start, you will need to create a new instance of `Archive`.
 *
 *     use Phine\Phar\File\Reader;
 *     use Phine\Phar\Archive;
 *
 *     $reader = new Reader('example.phar');
 *     $archive = new Archive($reader, 1234);
 *
 * You may also just want to use the `create()` method.
 *
 *     use Phine\Phar\Archive;
 *
 *     $archive = Archive::create('example.phar', 1234);
 *
 * The number `1234` is actually the offset of where the archive data will
 * actually begin. While this number is optional, I recommend that it be given
 * if it is known. If the offset is not provided, the class will scan the whole
 * archive to find it. This process can be expensive, depending on the size of
 * archive file.
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
class Archive
{
    /**
     * The flag mask.
     */
    const MASK = 0x3000;

    /**
     * The data offset for this archive.
     *
     * @var integer
     */
    private $offset;

    /**
     * The file reader for this archive.
     *
     * @var Reader
     */
    private $reader;

    /**
     * The sequence of characters that precedes the data.
     *
     * @var array
     */
    private static $sequence = array(
        '_', '_', 'h', 'a', 'l', 't',
        '_', 'c', 'o', 'm', 'p', 'i', 'l', 'e', 'r',
        '(', ')', ';', ' ', '?', '>'
    );

    /**
     * Sets the PHP archive file reader and data offset.
     *
     * If an offset is not provided `findOffset()` is called to discover the
     * offset. Since `findOffset()` can be expensive to call when using large
     * archive files, it is recommended that the offset be provided if it is
     * known.
     *
     *     use Phine\Phar\Archive;
     *     use Phine\Phar\File\Reader;
     *
     *     $reader = new Reader('example.phar');
     *     $archive = new Archive($reader, 1234);
     *
     * @param Reader  $reader            The archive file reader.
     * @param integer $offset (optional) The data offset.
     *
     * @throws ArchiveException If the offset is not set and no offset could
     *                          be found using the given archive reader.
     *
     * @api
     */
    public function __construct(Reader $reader, $offset = null)
    {
        if (null === $offset) {
            if (null === ($offset = self::findOffset($reader))) {
                throw ArchiveException::offsetNotFound($reader->getFile());
            }
        }

        $this->offset = $offset;
        $this->reader = $reader;
    }

    /**
     * Creates a new instance of this class.
     *
     * This method will create a new file reader and use it to create a new
     * instance of this class.
     *
     *     use Phine\Phar\Archive;
     *
     *     $archive = Archive::create('example.phar', 1234);
     *
     * @param string  $file              The archive file path.
     * @param integer $offset (optional) The data offset.
     *
     * @return Archive The new instance.
     */
    public static function create($file, $offset = null)
    {
        return new self(new Reader($file), $offset);
    }

    /**
     * Finds the data offset of an archive.
     *
     * This method will scan the entire archive for a specific sequence of
     * characters that denotes the end of the archive's stub. In an archive
     * file using the phar file format, the data follows the end of the stub.
     * If the sequence is located, the offset for the data will be returned.
     * If the sequence could not be found, nothing (`null`) is returned.
     *
     *     use Phine\Phar\File\Reader;
     *     use Phine\Phar\Archive;
     *
     *     $reader = new Reader('example.phar');
     *     $offset = Archive::findOffset($reader);
     *
     * @link http://us1.php.net/manual/en/phar.fileformat.phar.php File Format
     *
     * @param Reader $reader The archive file reader.
     *
     * @return integer If the archive offset is found, it is returned. If a
     *                 archive offset is not found, `null` is returned.
     *
     * @api
     */
    public static function findOffset(Reader $reader)
    {
        $reader->seek(0);

        $offset = 0;

        while (!$reader->isEndOfFile()) {
            if (strtolower($reader->read(1)) === self::$sequence[$offset]) {
                $offset++;
            } else {
                $offset = 0;
            }

            if (!isset(self::$sequence[$offset + 1])) {
                break;
            }
        }

        $reader->seek(1, SEEK_CUR);

        if ($offset === (count(self::$sequence) - 1)) {
            $position = $reader->getPosition();

            if ("\r\n" === $reader->read(2)) {
                return $position + 2;
            }

            return $position;
        }

        return null;
    }

    /**
     * Returns the stream alias for this archive.
     *
     * This method will return the stream alias that was set for the archive
     * when it was created. This alias can be used to stream files from the
     * archive using functions such as `file_get_contents()`.
     *
     *     $alias = $archive->getAlias();
     *
     * @see Phar::__construct()
     * @see Phar::setAlias()
     *
     * @return string The stream alias for the archive.
     *
     * @api
     */
    public function getAlias()
    {
        if (0 < ($size = $this->getAliasSize())) {
            return $this->reader->read($size);
        }

        return null;
    }

    /**
     * Returns the size of the stream alias in bytes.
     *
     * This method will return the size of the archive's stream alias.
     *
     *     $aliasSize = $archive->getAliasSize();
     *
     * > It may be interesting to note that the size returned and the actual
     * > data for the stream alias are two separate bits of data. It may be
     * > possible for an archive to be corrupted, reporting the wrong size
     * > for the alias.
     *
     * @return integer The size of the alias in bytes.
     *
     * @api
     */
    public function getAliasSize()
    {
        $this->reader->seek($this->offset + 14);

        return $this->readLong();
    }

    /**
     * Returns the version of the archive file format.
     *
     * This method will return the version of the file format used for this
     * archive file.
     *
     *     $version = $archive->getApiVersion();
     *
     * > Note that this version number is not to be confused with the version
     * > number returned by `Phar::apiVersion()`, as that version number is
     * > used for new archives.
     *
     * @see Phar::getVersion
     *
     * @return string The version of the archive file formats.
     *
     * @api
     */
    public function getApiVersion()
    {
        $this->reader->seek($this->offset + 8);

        $version = unpack('H*', $this->reader->read(2));
        $version = hexdec($version[1]);

        // @codeCoverageIgnoreStart
        $version = sprintf(
            '%u.%u.%u',
            $version >> 12,
            ($version >> 8) & 0xF,
            ($version >> 4) & 0xF
        );
        // @codeCoverageIgnoreEnd

        return $version;
    }

    /**
     * Returns the list of entries in manifest for this archive.
     *
     * This method will return the entries listed in the archive's manifest as
     * instances of `Entry`.
     *
     *     $files = $archive->getEntries();
     *
     * @return Entry[] The list of files in this archive.
     *
     * @api
     */
    public function getEntries()
    {

        $count = $this->getEntryCount();
        $size = $this->getManifestSize() + 4;

        $this->reader->seek(
            $this->offset
            + 18
            + $this->getAliasSize()
            + 4
            + $this->getMetadataSize()
        );

        return $this->readFileList($count, $size);
    }

    /**
     * Returns the number of files listed in the archive for this archive.
     *
     *     $fileCount = $archive->getEntryCount();
     *
     * @return integer The number of files in this archive.
     *
     * @api
     */
    public function getEntryCount()
    {
        $this->reader->seek($this->offset + 4);

        return $this->readLong();
    }

    /**
     * Returns the global bitmapped flags for this archive.
     *
     * This method will return a bitmapped value for the global flags set for
     * the archive. This value is not the same as the ones used on a per file
     * basis.
     *
     *     $flags = $archive->getFlags();
     *
     * @return integer The global bitmapped flags.
     *
     * @api
     */
    public function getGlobalFlags()
    {
        $this->reader->seek($this->offset + 10);

        return $this->readLong() & self::MASK;
    }

    /**
     * Returns the byte offset for the data of this archive.
     *
     * This method will return the offset in the archive file of where the
     * raw data begins.
     *
     *     $offset = $archive->getOffset();
     *
     * @return integer The byte offset.
     *
     * @api
     */
    public function getOffset()
    {
        return $this->offset;
    }

    /**
     * Returns the size of the manifest for this archive in bytes.
     *
     * This method will return the size of the manifest file in the archive
     * as bytes.
     *
     *     $size = $archive->getManifestSize();
     *
     * > It may be important to know what the manifest contains. It is simply
     * > a list of files and empty directories in the archive file, along with
     * > other information specific to each list entry. It does not contain
     * > data such as the global bitmapped flags or the archive stream alias.
     *
     * @return integer The size of the manifest in bytes.
     *
     * @api
     */
    public function getManifestSize()
    {
        $this->reader->seek($this->offset);

        return $this->readLong();
    }

    /**
     * Return the unserialized global metadata for this archive.
     *
     * This method will return the unserialized global metadata for the archive.
     *
     *     $metadata = $archive->getMetadata();
     *
     * If no metadata has been set, `null` is returned. Note, however, that
     * this is may not be true since it could have been a serialized `null`
     * value. To confirm that no data was provided, you will want to use the
     * `hasMetadata()` method.
     *
     * @return mixed The unserialized global metadata.
     *
     * @throws ArchiveException If the global metadata is corrupt or invalid.
     *
     * @api
     */
    public function getMetadata()
    {
        if (0 === ($size = $this->getMetadataSize())) {
            return null;
        }

        return $this->readData($size);
    }

    /**
     * Returns the size of metadata in this archive in bytes.
     *
     * This method will return the size of the global metadata for the archive.
     *
     *     $size = $archive->getMetadataSize();
     *
     * If the size is `0` (zero), no metadata was set.
     *
     * @return integer The size of the metadata in bytes.
     *
     * @api
     */
    public function getMetadataSize()
    {
        $this->reader->seek($this->offset + 18 + $this->getAliasSize());

        return $this->readLong();
    }

    /**
     * Returns the file reader for this archive.
     *
     * This method will return the file reader used for reading the archive.
     *
     *     $reader = $archive->getReader();
     *
     * @return Reader The file reader for this archive.
     *
     * @api
     */
    public function getReader()
    {
        return $this->reader;
    }

    /**
     * Checks if the archive has global metadata.
     *
     * This method will check to see if the archive actually has metadata.
     *
     *     if ($archive->hasMetadata()) {
     *         // has metadata
     *     }
     *
     * @return boolean If the archive has metadata, `true` is returned. If the
     *                 archive does not have metadata, `false` is returned.
     *
     * @api
     */
    public function hasMetadata()
    {
        return (0 < $this->getMetadataSize());
    }

    /**
     * Reads and unserializes data.
     *
     * This method will read that has been serialized and stored in the
     * archive file. The read data will then be returned unserialized.
     *
     * @param integer $size The size of the metadata.
     *
     * @return mixed The unserialized data.
     */
    private function readData($size)
    {
        return unserialize($this->reader->read($size));
    }

    /**
     * Reads the expected number of files from the archive.
     *
     * This method will parse the given number of files from the archive's
     * manifest. Each entry in the manifest will be added to an array as an
     * instance of `Entry`. The `$expected` and `$size` parameters are not
     * precise, garbage data may be read which would result in the reader
     * throwing an exception.
     *
     * @param integer $expected The expected number of files.
     * @param integer $size     The size of the archive.
     *
     * @return Entry[] The list of files.
     */
    private function readFileList($expected, $size)
    {
        $files = array();
        $offset = $this->offset + $size;

        for ($i = 0; $i < $expected; $i++) {
            $file = array(
                'crc32'=> null,
                'flags' => null,
                'metadata' => array(
                    'data' => null,
                    'size' => null,
                ),
                'name' => array(
                    'data' => null,
                    'size' => null,
                ),
                'offset' => $offset,
                'size' => array(
                    'compressed' => null,
                    'uncompressed' => null,
                ),
                'time' => null,
            );

            $file['name']['size'] = $this->readLong();
            $file['name']['data'] = $this->reader->read($file['name']['size']);
            $file['size']['uncompressed'] = $this->readLong();
            $file['time'] = $this->readLong();
            $file['size']['compressed'] = $this->readLong();
            $file['crc32'] = $this->readLong();
            $file['flags'] = $this->readLong() & self::MASK;
            $file['metadata']['size'] = $this->readLong();

            if ($file['metadata']['size']) {
                $file['metadata']['data'] = $this->readData(
                    $file['metadata']['size']
                );
            }

            $file['name']['data'] = Path::split($file['name']['data']);
            $file['name']['data'] = join('/', $file['name']['data']);

            $offset += $file['size']['compressed'];
            $files[] = new Entry(
                $this,
                $file['offset'],
                $file['name']['size'],
                $file['name']['data'],
                $file['size']['uncompressed'],
                $file['time'],
                $file['size']['compressed'],
                $file['crc32'],
                $file['flags'],
                $file['metadata']['size'],
                $file['metadata']['data']
            );
        }

        return $files;
    }

    /**
     * Reads and unpacks an unsigned long.
     *
     * This method will read an unsigned long (little-endian byte order) from
     * the file and return the unpacked value.
     *
     * @return integer The unsigned long.
     */
    private function readLong()
    {
        $long = unpack('V', $this->reader->read(4));
        $long = (int) $long[1];

        return $long;
    }
}
<?php

namespace Phine\Phar\Signature\Algorithm;

use Phine\Phar\File\Reader;

/**
 * Provides the basis for a `hash()` supported signature algorithm.
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
abstract class AbstractHashAlgorithm implements AlgorithmInterface
{
    /**
     * {@inheritDoc}
     */
    public function readSignature(Reader $reader)
    {
        $size = $this->getSize();

        $reader->seek(-8 - $size, SEEK_END);

        $hash = unpack('H*', $reader->read($size));
        $hash = strtoupper($hash[1]);

        return array(
            'hash' => $hash,
            'hash_type' => $this->getName()
        );
    }

    /**
     * {@inheritDoc}
     */
    public function verifySignature(Reader $reader)
    {
        $expected = $this->readSignature($reader);

        $context = hash_init($this->getAlgorithm());

        $reader->seek(0);

        hash_update_stream(
            $context,
            $reader->getHandle(),
            $reader->getSize() - $this->getSize() - 8
        );

        $actual = strtoupper(hash_final($context));

        return ($expected['hash'] === $actual);
    }

    /**
     * Returns the algorithm name as recognized by `hash()`.
     *
     * This method will return the name of the hash algorithm that will be
     * used with the `hash()` function. Note that you may want to check the
     * returned name against `hash_algos()` to see if the algorithm is in
     * fact supported.
     *
     *     echo $this->getAlgorithm(); // sha1
     *
     * @return string The name of the algorithm.
     *
     * @api
     */
    abstract protected function getAlgorithm();

    /**
     * Returns the name of the algorithm as returned by `Phar::getHash()`.
     *
     * This method will return the name of the hash algorithm as it would
     * have been returned by the `Phar::getSignature()` method. The case
     * and formatting may be different from that of ones returned by the
     * `hash_algos()` method.
     *
     *     echo $this->getName(); // SHA-1
     *
     * @return string The name of the algorithm.
     *
     * @api
     */
    abstract protected function getName();

    /**
     * Returns the byte size of the hash generated by the algorithm.
     *
     * This method will return the number of bytes that will need to be read
     * from the archive file in order to extract the whole signature hash (not
     * including the type flag and "GBMB" magic flag).
     *
     *     echo $this->getSize(); // 20
     *
     * @return integer The size of the hash.
     *
     * @api
     */
    abstract protected function getSize();
}
<?php

namespace Phine\Phar\Signature\Algorithm;

/**
 * Provides support for the SHA256 algorithm.
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
class SHA256 extends AbstractHashAlgorithm
{
    /**
     * {@inheritDoc}
     */
    public function getFlag()
    {
        return 0x03;
    }

    /**
     * @override
     */
    protected function getAlgorithm()
    {
        return 'sha256';
    }

    /**
     * @override
     */
    protected function getName()
    {
        return 'SHA-256';
    }

    /**
     * @override
     */
    protected function getSize()
    {
        return 32;
    }
}
<?php

namespace Phine\Phar\Signature\Algorithm;

use Phine\Exception\Exception;
use Phine\Phar\Exception\FileException;
use Phine\Phar\Exception\SignatureException;
use Phine\Phar\File\Reader;

/**
 * Provides support for OpenSSL signed archives.
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
class OpenSSL implements AlgorithmInterface
{
    /**
     * Throws an exception if the `openssl` extension is not available.
     *
     * @throws SignatureException If the extension is not available.
     *
     * @api
     */
    public function __construct()
    {
        if (!extension_loaded('openssl')) {
            throw new SignatureException(
                'The "openssl" extension is not installed.'
            );
        }
    }

    /**
     * {@inheritDoc}
     */
    public function getFlag()
    {
        return 0x10;
    }

    /**
     * {@inheritDoc}
     */
    public function readSignature(Reader $reader)
    {
        $size = $this->getSize($reader);

        $reader->seek(-12 - $size, SEEK_END);

        $hash = unpack('H*', $reader->read($size));
        $hash = strtoupper($hash[1]);

        return array(
            'hash' => $hash,
            'hash_type' => 'OpenSSL'
        );
    }

    /**
     * {@inheritDoc}
     */
    public function verifySignature(Reader $reader)
    {
        $expected = $this->readSignature($reader);
        $key = $this->readPublicKey($reader);
        $data = $this->getData($reader);

        $this->resetBuffer();

        ob_start();

        $result = openssl_verify($data, pack('H*', $expected['hash']), $key);
        $error = ob_get_clean();

        if (-1 === $result) {
            throw new SignatureException(openssl_error_string());
        } elseif (!empty($error)) {
            throw new SignatureException($error);
        }

        return (1 === $result);
    }

    /**
     * Reads the contents of the archive file without the signature.
     *
     * @param Reader $reader The archive file reader.
     *
     * @return string The archive data.
     */
    private function getData(Reader $reader)
    {
        $size = $this->getSize($reader);

        $reader->seek(0);

        return $reader->read($reader->getSize() - 12 - $size);
    }

    /**
     * Returns the size of the signature hash.
     *
     * @param Reader $reader The archive file reader.
     *
     * @return integer The size of the signature hash.
     */
    private function getSize(Reader $reader)
    {
        $reader->seek(-12, SEEK_END);

        $size = unpack('V', $reader->read(4));
        $size = (int) $size[1];

        return $size;
    }

    /**
     * Returns the public key for the archive file.
     *
     * @param Reader $reader The archive file reader.
     *
     * @return string The public key.
     *
     * @throws Exception
     * @throws FileException If the public key could not be read.
     */
    private function readPublicKey(Reader $reader)
    {
        $file = $reader->getFile() . '.pubkey';

        if (!file_exists($file)) {
            throw FileException::createUsingFormat(
                'The path "%s" is not a file or does not exist.',
                $file
            );
        }

        if (false === ($key = @file_get_contents($file))) {
            throw FileException::createUsingLastError();
        }

        return $key;
    }

    /**
     * Resets the OpenSSL error buffer.
     *
     * @param integer $max The maximum number of iterations.
     */
    private function resetBuffer($max = 100)
    {
        $count = 0;

        while (openssl_error_string()) {
            if (++$count === $max) {
                break;
            }
        }
    }
}
<?php

namespace Phine\Phar\Signature\Algorithm;

/**
 * Provides support for the SHA512 algorithm.
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
class SHA512 extends AbstractHashAlgorithm
{
    /**
     * {@inheritDoc}
     */
    public function getFlag()
    {
        return 0x04;
    }

    /**
     * @override
     */
    protected function getAlgorithm()
    {
        return 'sha512';
    }

    /**
     * @override
     */
    protected function getName()
    {
        return 'SHA-512';
    }

    /**
     * @override
     */
    protected function getSize()
    {
        return 64;
    }
}
<?php

namespace Phine\Phar\Signature\Algorithm;

/**
 * Provides support for the SHA1 algorithm.
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
class SHA1 extends AbstractHashAlgorithm
{
    /**
     * {@inheritDoc}
     */
    public function getFlag()
    {
        return 0x02;
    }

    /**
     * @override
     */
    protected function getAlgorithm()
    {
        return 'sha1';
    }

    /**
     * @override
     */
    protected function getName()
    {
        return 'SHA-1';
    }

    /**
     * @override
     */
    protected function getSize()
    {
        return 20;
    }
}
<?php

namespace Phine\Phar\Signature\Algorithm;

/**
 * Provides support for the MD5 algorithm.
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
class MD5 extends AbstractHashAlgorithm
{
    /**
     * {@inheritDoc}
     */
    public function getFlag()
    {
        return 0x01;
    }

    /**
     * @override
     */
    protected function getAlgorithm()
    {
        return 'md5';
    }

    /**
     * @override
     */
    protected function getName()
    {
        return 'MD5';
    }

    /**
     * @override
     */
    protected function getSize()
    {
        return 16;
    }
}
<?php

namespace Phine\Phar\Signature\Algorithm;

use Phine\Phar\File\Reader;

/**
 * Defines how a signature algorithm class must be implemented.
 *
 * @link http://us1.php.net/manual/en/phar.fileformat.signature.php Signature Format
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
interface AlgorithmInterface
{
    /**
     * Returns the signature algorithm flag.
     *
     * This method will return the flag used to identify the algorithm used
     * to sign an archive file.
     *
     *     $flag = $algorithm->getFlag();
     *
     *     if (0x0002 === $flag) {
     *         // SHA1
     *     }
     *
     * @return integer The signature algorithm flag.
     *
     * @api
     */
    public function getFlag();

    /**
     * Reads the signature from the archive file.
     *
     * This method will read the signature type and hash from the archive file
     * using the given reader. The value returned is identical to that returned
     * by the `Phar::getSignature()` instance method.
     *
     *     $signature = $algorithm->readSignature($reader);
     *
     * The returned value will look something like this:
     *
     *     $signature = array(
     *         'hash' => 'F6C4F20BEB430D16F79E295766848D0C001D1E40',
     *         'hash_type' => 'SHA1',
     *     );
     *
     * @param Reader $reader The archive file reader.
     *
     * @return array The read signature type and hash.
     *
     * @api
     */
    public function readSignature(Reader $reader);

    /**
     * Verifies the signature for the archive file.
     *
     * This method will verify the actual signature of the archive against
     * the embedded signature. If the actual signature does not match the
     * expected (embedded) one, `false` will be returned.
     *
     *     if ($algorithm->verifySignature($reader)) {
     *         // verified
     *     }
     *
     * @param Reader $reader The archive file reader.
     *
     * @return boolean Returns `true` if verified, `false` if not.
     *
     * @api
     */
    public function verifySignature(Reader $reader);
}
<?php

namespace Phine\Phar\File;

use Phine\Exception\Exception;
use Phine\Phar\Exception\FileException;

/**
 * Manages strict file writing operations.
 *
 * Summary
 * -------
 *
 * The `Writer` class provides a way to write files with heavy error checking.
 * Instead of subtly triggering warnings, exceptions are thrown if something
 * could not be done (e.g. fopen(), fwrite() a specific number of bytes, etc).
 *
 * Starting
 * --------
 *
 * To start, you need to create a new instance of `Writer`.
 *
 *     use Phine\Phar\File\Writer;
 *
 *     $writer = new Writer('/path/to/file');
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
class Writer
{
    /**
     * The path to the file.
     *
     * @var string
     */
    private $file;

    /**
     * The file handle.
     *
     * @var resource
     */
    private $handle;

    /**
     * Sets the path of the file for writing.
     *
     * This method will set the path of the file to be written.
     *
     *     use Phine\Phar\File\Writer;
     *
     *     $writer = new Writer('/path/to/file');
     *
     * > Note that the file will not be opened until the first write operation
     * > is attempted. An exception will still be thrown, however, if the
     * > directory for the file does not exist, or if the file exists but is
     * > not writable.
     *
     * @param string $file The path of the file.
     *
     * @throws Exception
     * @throws FileException If the file path is not valid.
     *
     * @api
     */
    public function __construct($file)
    {
        if (!is_dir($dir = dirname($file))) {
            throw FileException::createUsingFormat(
                'The directory "%s" does not exist.',
                $dir
            );
        }

        if (is_file($file) && !is_writable($file)) {
            throw FileException::createUsingFormat(
                'The file "%s" exists but is not writable.',
                $file
            );
        }

        $this->file = $file;
    }

    /**
     * Closes the file if it's open.
     *
     * This method will close the file handle if it has been opened.
     *
     *     use Phine\Phar\File\Writer;
     *
     *     $writer = new Writer('/path/to/file');
     *
     *     $reader->write($data);
     *
     *     unset($reader);
     *
     * @api
     */
    public function __destruct()
    {
        if ($this->handle) {
            fclose($this->handle);
        }
    }

    /**
     * Returns the path of the file.
     *
     * This method will return the path to the file being written.
     *
     *     $file = $writer->getFile();
     *
     * @return string The path of the file.
     *
     * @api
     */
    public function getFile()
    {
        return $this->file;
    }

    /**
     * Returns the writing file handle.
     *
     * This method will return the writing file handle for the file.
     *
     *     $handle = $writer->getHandle();
     *
     * > Note that the file will be opened for writing binary data.
     *
     * @return resource The file handle.
     *
     * @throws Exception
     * @throws FileException If the file could not be opened for reading.
     *
     * @api
     */
    public function getHandle()
    {
        if (null === $this->handle) {
            if (false === ($this->handle = @fopen($this->file, 'wb'))) {
                throw FileException::createUsingLastError();
            }
        }

        return $this->handle;
    }

    /**
     * Writes a specific number of bytes to the file.
     *
     * This method will attempt to write the exact string, or the length
     * specified. If the whole string, or the specified length, could not
     * be written, an exception will be thrown.
     *
     *     $writer->write($data);
     *
     * @param string  $string The string to write to the file.
     * @param integer $length The number of bytes of the string to write.
     *
     * @throws Exception
     * @throws FileException If the file could not be written.
     *
     * @api
     */
    public function write($string, $length = null)
    {
        if (null === $length) {
            $length = strlen($string);
        }

        if (false === ($actual = @fwrite($this->getHandle(), $string, $length))) {
            throw FileException::createUsingLastError();
        }

        if ($length !== $actual) {
            throw FileException::createUsingFormat(
                'Only %d of %d bytes were written to "%s".',
                $actual,
                $length,
                $this->file
            );
        }
    }
}
<?php

namespace Phine\Phar\File;

use Phine\Exception\Exception;
use Phine\Phar\Exception\FileException;

/**
 * Manages strict file reading operations.
 *
 * Summary
 * -------
 *
 * The `Reader` class provides a way to read files with heavy error checking.
 * Instead of subtly triggering warnings, exceptions are thrown if something
 * could not be done (e.g. fseek(), fread() a specific number of bytes, etc).
 *
 * Starting
 * --------
 *
 * To start, you will need to create a new instance of `Reader`.
 *
 *     use Phine\Phar\File\Reader;
 *
 *     $reader = new Reader('/path/to/file');
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
class Reader
{
    /**
     * The path to the file.
     *
     * @var string
     */
    private $file;

    /**
     * The file handle.
     *
     * @var resource
     */
    private $handle;

    /**
     * Sets the path of the file for reading.
     *
     * This method will set the path of the file to be read.
     *
     *     use Phine\Phar\File\Reader;
     *
     *     $reader = new Reader('/path/to/file');
     *
     * > Note that the file will not be opened until the first read operation
     * > is attempted. An exception will still be thrown, however, if the file
     * > does not exist.
     *
     * @param string $file The path of the file.
     *
     * @throws Exception
     * @throws FileException If the file path is not valid.
     *
     * @api
     */
    public function __construct($file)
    {
        if (!is_file($file)) {
            throw FileException::createUsingFormat(
                'The path "%s" is not a file or does not exist.',
                $file
            );
        }

        $this->file = $file;
    }

    /**
     * Closes the file if it's open.
     *
     * This method will close the file handle if it has been opened.
     *
     *     use Phine\Phar\File\Reader;
     *
     *     $reader = new Reader('/path/to/file');
     *
     *     $data = $reader->read(10);
     *
     *     unset($reader);
     *
     * @api
     */
    public function __destruct()
    {
        if ($this->handle) {
            fclose($this->handle);
        }
    }

    /**
     * Returns the path of the file.
     *
     * This method will return the path to the file being read.
     *
     *     $file = $reader->getFile();
     *
     * @return string The path of the file.
     *
     * @api
     */
    public function getFile()
    {
        return $this->file;
    }

    /**
     * Returns the reading file handle.
     *
     * This method will return the reading file handle for the file.
     *
     *     $handle = $reader->getHandle();
     *
     * @return resource The file handle.
     *
     * @throws Exception
     * @throws FileException If the file could not be opened for reading.
     *
     * @api
     */
    public function getHandle()
    {
        if (null === $this->handle) {
            if (false === ($this->handle = @fopen($this->file, 'rb'))) {
                throw FileException::createUsingLastError();
            }
        }

        return $this->handle;
    }

    /**
     * Returns the current position of the file pointer.
     *
     * This method will return the result of `fseek()` on the file handle.
     *
     *     $position = $reader->getPosition();
     *
     * @return integer The current position.
     *
     * @throws Exception
     * @throws FileException If the size could not be read.
     *
     * @api
     */
    public function getPosition()
    {
        if (false === ($position = @ftell($this->getHandle()))) {
            throw FileException::createUsingLastError();
        }

        return $position;
    }

    /**
     * Returns the byte size of the file.
     *
     * This method will return the size of the file on disk as bytes.
     *
     *     $size = $reader->getSize();
     *
     * @return integer The size of the file in bytes.
     *
     * @throws Exception
     * @throws FileException If the size could not be read.
     *
     * @api
     */
    public function getSize()
    {
        if (false === ($size = @filesize($this->file))) {
            throw FileException::createUsingLastError();
        }

        return $size;
    }

    /**
     * Checks if the end of the file has been reached.
     *
     * Before `feof()` is called, an attempt is made to reach a single byte
     * from the file. If the read fails, then the `feof()` is made to actually
     * determine the if the end of the file has been reached. If the EOF is not
     * reached, the file handle will be seeked back the one byte that was read.
     *
     *     while (!$reader->isEndOfFile()) {
     *         // not at the end yet
     *     }
     *
     * @return boolean If the end of the file has been reached, `true` is
     *                 returned. If the end of the file has not been reached,
     *                 `false` is returned.
     *
     * @api
     */
    public function isEndOfFile()
    {
        $handle = $this->getHandle();

        if (false === @fgetc($handle)) {

            return feof($handle);
        } else {
            fseek($handle, -1, SEEK_CUR);
        }

        return false;
    }

    /**
     * Reads a specific number of bytes from the file.
     *
     * This method will attempt to read the exact number of bytes specified.
     * If the exact number of bytes could not be read, an exception will be
     * thrown.
     *
     *     $data = $reader->read(10);
     *
     * @param integer $bytes The number of bytes.
     *
     * @return string The bytes read.
     *
     * @throws Exception
     * @throws FileException If not all the bytes were read.
     *
     * @api
     */
    public function read($bytes)
    {
        $read = '';
        $total = $bytes;

        while (!$this->isEndOfFile() && $bytes) {
            if (false === ($chunk = @fread($this->getHandle(), $bytes))) {
                throw FileException::createUsingLastError();
            }

            $read .= $chunk;
            $bytes -= strlen($chunk);
        }

        if ($total !== ($actual = strlen($read))) {
            throw FileException::createUsingFormat(
                'Only read %d bytes of %d from "%s".',
                $actual,
                $total,
                $this->file
            );
        }

        return $read;
    }

    /**
     * Seeks to a specific point in the file.
     *
     * This method will seek to the specified offset in the file.
     *
     *     $reader->seek(10, SEEK_CUR);
     *
     * @param integer $offset The offset.
     * @param integer $whence The direction.
     *
     * @throws Exception
     * @throws FileException If seeking failed.
     *
     * @api
     */
    public function seek($offset, $whence = SEEK_SET)
    {
        if (-1 === @fseek($this->getHandle(), $offset, $whence)) {
            throw FileException::createUsingFormat(
                'Could not seek to %d in "%s".',
                $offset,
                $this->file
            );
        }
    }
}
<?php

namespace Phine\Phar\Manifest;

use Phine\Phar\Archive;

/**
 * Manages the information of an individual manifest entry.
 *
 * Summary
 * -------
 *
 * The `Entry` class manages an individual entry in the manifest of an archive
 * file. For file entries, the class does not directly manages the contents of
 * a file. Instead, the class is used by the `Extract` class to know where a
 * file begins and how much should be read from the archive.
 *
 * Using
 * -----
 *
 * Instances of this class are returned by the `Archive::getEntries()` method.
 * Instantiation of the class itself is intended to be limited to the library
 * itself, and is therefore not part of the public API. The remaining methods
 * (i.e. no the `__construct()` method) are part of the public API.
 *
 *     $entries = $archive->getEntries();
 *
 * @link http://us1.php.net/manual/en/phar.fileformat.manifestfile.php Manifest File Entry Definition
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
class Entry
{
    /**
     * The bzip2 compression flag.
     *
     * @api
     */
    const BZ2 = 0x2000;

    /**
     * The gzip compression flag.
     *
     * @api
     */
    const GZ = 0x1000;

    /**
     * The archive this entry was read from.
     *
     * @var Archive
     */
    private $archive;

    /**
     * The compressed byte size of this entry.
     *
     * @var integer
     */
    private $compressedSize;

    /**
     * The CRC32 checksum for this entry.
     *
     * @var integer
     */
    private $crc32;

    /**
     * The bitwise flags for this entry.
     *
     * @var integer
     */
    private $flags;

    /**
     * The metadata for this entry.
     *
     * @var mixed
     */
    private $metadata;

    /**
     * The byte size of the metadata for this entry.
     *
     * @var integer
     */
    private $metadataSize;

    /**
     * The name of this entry.
     *
     * @var string
     */
    private $name;

    /**
     * The byte size of the name for this entry.
     *
     * @var integer
     */
    private $nameSize;

    /**
     * The offset for this entry's file data.
     *
     * @var integer
     */
    private $offset;

    /**
     * The uncompressed byte size of this entry's file data.
     *
     * @var integer
     */
    private $size;

    /**
     * The Unix timestamp of this entry.
     *
     * @var integer
     */
    private $timestamp;

    /**
     * Sets the information for this entry.
     *
     * @param Archive  $archive        The archive the entry was read from.
     * @param integer  $offset         The offset for the file data.
     * @param integer  $nameSize       The byte size of the name.
     * @param string   $name           The name.
     * @param integer  $size           The uncompressed byte size.
     * @param integer  $timestamp      The Unix timestamp.
     * @param integer  $compressedSize The compressed byte size.
     * @param integer  $crc32          The CRC32 checksum.
     * @param integer  $flags          The bitwise flags.
     * @param integer  $metadataSize   The byte size of the metadata.
     * @param mixed    $metadata       The metadata.
     *
     * @internal
     */
    public function __construct(
        Archive $archive,
        $offset,
        $nameSize,
        $name,
        $size,
        $timestamp,
        $compressedSize,
        $crc32,
        $flags,
        $metadataSize,
        $metadata
    ) {
        $this->compressedSize = $compressedSize;
        $this->crc32 = $crc32;
        $this->flags = $flags;
        $this->archive = $archive;
        $this->metadata = $metadata;
        $this->metadataSize = $metadataSize;
        $this->name = $name;
        $this->nameSize = $nameSize;
        $this->offset = $offset;
        $this->size = $size;
        $this->timestamp = $timestamp;
    }

    /**
     * Returns the archive this entry was read from.
     *
     * This method will return the archive file reader that was used to
     * retrieve this manifest entry.
     *
     *     $archive = $entry->getArchive();
     *
     * @return Archive The archive.
     *
     * @api
     */
    public function getArchive()
    {
        return $this->archive;
    }

    /**
     * Returns the compressed byte size of the file data for this entry.
     *
     * This method will return the size of the file data for this entry in
     * bytes. The size returned may not be the actual size of the file data
     * before it was been compressed (e.g. bzip2, gzip).
     *
     *     $size = $entry->getCompressedSize();
     *
     * @return integer The compressed size.
     *
     * @api
     */
    public function getCompressedSize()
    {
        return $this->compressedSize;
    }

    /**
     * Returns the CRC32 checksum for this entry.
     *
     * This method will return the CRC32 checksum of the file data of this
     * entry. If the file has been compressed, the checksum only applies to
     * the uncompressed file data for this entry.
     *
     *     $crc32 = $entry->getCrc32();
     *
     * @return integer The checksum.
     *
     * @api
     */
    public function getCrc32()
    {
        return $this->crc32;
    }

    /**
     * Returns the bitmapped flags for this entry.
     *
     * This method will return the bitmapped flags for the entry. The flags
     * could be used to identify compression methods used on the file data
     * stored in the archive.
     *
     *     $flags = $entry->getFlags();
     *
     * @return integer The bitwise flags.
     *
     * @api
     */
    public function getFlags()
    {
        return $this->flags;
    }

    /**
     * Returns the unserialized metadata for this entry.
     *
     * This method will return the unserialized metadata for the entry.
     *
     *     $metadata = $entry->getMetadata();
     *
     * If no metadata has been set, `null` is returned. Note, however, that
     * this is may not be true since it could have been a serialized `null`
     * value. To confirm that no data was provided, you will want to use the
     * `hasMetadata()` method.
     *
     * @return mixed The metadata.
     *
     * @api
     */
    public function getMetadata()
    {
        return $this->metadata;
    }

    /**
     * Returns the byte size of the metadata for this entry.
     *
     * This method will return the size of the metadata for the entry.
     *
     *     $size = $entry->getMetadataSize();
     *
     * If the size is `0` (zero), no metadata was set.
     *
     * @return integer The byte size of the metadata.
     *
     * @api
     */
    public function getMetadataSize()
    {
        return $this->metadataSize;
    }

    /**
     * Returns the name of this entry.
     *
     * This method will return the name of the entry as used inside the archive.
     *
     *     $name = $entry->getName();
     *
     * If this entry is for a directory, the name will have a trailing slash.
     *
     * @return string The name of the file.
     *
     * @api
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * Returns the byte size of the name for this entry.
     *
     * This method will return the size of the name for this entry in bytes.
     *
     *     $size = $entry->getNameSize();
     *
     * @return integer The byte size of the name for this entry.
     *
     * @api
     */
    public function getNameSize()
    {
        return $this->nameSize;
    }

    /**
     * Returns the offset for the file data of this entry.
     *
     * This method will return the offset in the archive file of where the
     * contents of this file data begins for this entry. It is primarily used
     * by the `Extract` class to know where to begin extracting an individual
     * file.
     *
     *     $offset = $entry->getOffset();
     *
     * @return integer The offset for the data.
     *
     * @api
     */
    public function getOffset()
    {
        return $this->offset;
    }

    /**
     * Returns the uncompressed byte size of the file data for this entry.
     *
     * This method will return the byte size of the uncompressed file data for
     * this entry. Note that this may not necessarily be the same of the data
     * as stored in the archive file (on disk). For that, you will need to use
     * the `Entry::getCompressedSize()` method.
     *
     *     $size = $entry->getSize();
     *
     * @return integer The uncompressed size.
     *
     * @api
     */
    public function getSize()
    {
        return $this->size;
    }

    /**
     * Returns the Unix timestamp of the entry.
     *
     * This method will return the Unix timestamp of when the entry was added
     * to the manifest.
     *
     *     $timestamp = $entry->getTimestamp();
     *
     * @return integer The Unix timestamp.
     *
     * @api
     */
    public function getTimestamp()
    {
        return $this->timestamp;
    }

    /**
     * Checks if the entry has metadata.
     *
     * This method will check to see if the entry actually has metadata.
     *
     *     if ($entry->hasMetadata()) {
     *         // has metadata
     *     }
     *
     * @return boolean If the file has metadata, `true` is returned. If the
     *                 file does not have metadata, `false` is returned.
     *
     * @api
     */
    public function hasMetadata()
    {
        return (0 < $this->metadataSize);
    }

    /**
     * Checks if the file data is compressed using the specified algorithm.
     *
     * This method will check to see if the file data for this entry has been
     * compressed using a specific compression algorithm.
     *
     *     use Phine\Phar\Manifest\Entry;
     *
     *     if ($entry->isCompressed(Entry::BZ2)) {
     *         // compressed using bzip2
     *     } elseif ($entry->isCompressed(Entry::GZ)) {
     *         // compressed using gzip
     *     } else {
     *         // not compressed
     *     }
     *
     * @param integer $algorithm The algorithm to check.
     *
     * @return boolean If the file is compressed, `true` is returned. If the
     *                 file is not compressed using the specified algorithm,
     *                 `false` is returned.
     *
     * @api
     */
    public function isCompressed($algorithm)
    {
        return (0 < ($this->flags & $algorithm));
    }

    /**
     * Checks if this entry is a directory.
     *
     * This method will check if this manifest entry is for an empty directory.
     *
     *     if ($entry->isDirectory()) {
     *         // is directory
     *     }
     *
     * @return boolean If this instance is for a directory inside the archive,
     *                 `true` is returned. If this instance is for a file,
     *                 `false` is returned.
     */
    public function isDirectory()
    {
        return ('/' === substr($this->name, -1, 1));
    }
}
<?php

namespace Phine\Phar;

use Iterator;
use Phar;
use Phine\Observer\Collection;
use Phine\Observer\ObserverInterface;
use Phine\Observer\SubjectInterface;
use Phine\Phar\Subject\Builder as Subject;
use Phine\Phar\Subject\Arguments;
use Phine\Phar\Subject\AbstractSubject;

/**
 * Manages an event-driven process for building a PHP archive.
 *
 * Summary
 * -------
 *
 * The `Builder` class wraps specific `Phar` instance methods so that they
 * could be made into observable events. When one of these methods is called,
 * the arguments passed to it are made available to all of the observers of
 * that method. Each observer will have the opportunity to change the values
 * of the arguments, prevent the event from completing (the actual `Phar`
 * method would not be called), or cause some other action to occur.
 *
 * > You may want to read the documentation for the
 * > [phine/observer](https://github.com/phine/lib-observer) library in order
 * > to have a much better understanding of how events are managed.
 *
 * Starting
 * --------
 *
 * To start, you will need to create a new instance of `Builder`.
 *
 * You can use an existing `Phar` instance:
 *
 *     $builder = new Builder($phar);
 *
 * Or you can create your own:
 *
 *     $builder = Builder::create('example.phar');
 *
 * Events
 * ------
 *
 * The `Builder` class provides the following events:
 *
 * - `Builder::ADD_DIR` - For addEmptyDir().
 * - `Builder::ADD_FILE` - For addFile().
 * - `Builder::ADD_STRING` - For addFromString().
 * - `Builder::BUILD_DIR` - For buildFromDirectory().
 * - `Builder::BUILD_ITERATOR` - For buildFromIterator().
 * - `Builder::SET_STUB` - For setStub().
 *
 * ### Observing an Event
 *
 * To observe an event, you must create an observer class that implements the
 * interface, `Phine\Observer\ObserverInterface`. It is a part of the observer
 * library used to manage events.
 *
 *     use Phine\Observer\ObserverInterface;
 *     use Phine\Observer\SubjectInterface;
 *
 *     class MyObserver implements ObserverInterface
 *     {
 *         public function receiveUpdate(SubjectInterface $subject)
 *         {
 *         }
 *     }
 *
 * The `$subject` is an instance of a class that extends the `AbstractSubject`
 * class. This class provides you access to methods such as `getArguments()`,
 * which allows you to retrieve and modify the arguments that will be passed
 * to the `Phar` class method. For example, if the observer is registered to
 * the `Builder::ADD_STRING` event, it will have access to the local name and
 * contents of the file that will be added to the archive.
 *
 *     use Phine\Observer\ObserverInterface;
 *     use Phine\Observer\SubjectInterface;
 *
 *     class Replace implements ObserverInterface
 *     {
 *         public function receiveUpdate(SubjectInterface $subject)
 *         {
 *             $arguments = $subject->getArguments();
 *
 *             $arguments['contents'] = str_replace(
 *                 '{name}',
 *                 'world',
 *                 $arguments['contents']
 *             );
 *         }
 *     }
 *
 * The observer above will replace all occurrences of `{name}`, in any string
 * added, with `world`.
 *
 * > It is important to note that each event will make available its own list
 * > of method arguments, and accessing non-existent arguments will throw an
 * > exception.
 *
 * To register the observer, you will need to call the `observe()` method
 * with the appropriate event identifier and an instance of your observer:
 *
 *     $builder->observe(Builder::ADD_STRING, new Replace());
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
class Builder extends Collection
{
    /**
     * The event ID for adding an empty directory.
     *
     * @api
     */
    const ADD_DIR = 'add.directory';

    /**
     * The event ID for adding a file from disk.
     *
     * @api
     */
    const ADD_FILE = 'add.file';

    /**
     * The event ID for adding a file from a string.
     *
     * @api
     */
    const ADD_STRING = 'add.string';

    /**
     * The event ID for building from a directory.
     *
     * @api
     */
    const BUILD_DIR = 'build.directory';

    /**
     * The event ID for building using an iterator.
     *
     * @api
     */
    const BUILD_ITERATOR = 'build.iterator';

    /**
     * The event ID for settings the stub.
     *
     * @api
     */
    const SET_STUB = 'set.stub';

    /**
     * The PHP archive being built.
     *
     * @var Phar
     */
    private $phar;

    /**
     * Sets the PHP archive instance to build with.
     *
     * Once the archive instance has been set, the default event subjects are
     * registered with this new builder by calling `registerDefaultSubjects()`,
     * a protected instance method. This method can be overridden to register
     * new or different events.
     *
     *     use Phine\Phar\Builder;
     *
     *     $phar = new Phar('example.phar');
     *
     *     $builder = new Builder($phar);
     *
     * @see Builder::registerDefaultSubjects
     *
     * @param Phar $phar The PHP archive.
     *
     * @api
     */
    public function __construct(Phar $phar)
    {
        $this->phar = $phar;

        $this->registerDefaultSubjects();
    }

    /**
     * Adds an empty directory to the archive.
     *
     * Triggers the `Builder::ADD_DIR` event.
     *
     *     $builder->addEmptyDir('example');
     *
     * @see Phar::addEmptyDir
     *
     * @param string $name The name of the directory.
     *
     * @api
     */
    public function addEmptyDir($name)
    {
        $this->invokeEvent(
            self::ADD_DIR,
            array(
                'name' => $name
            )
        );
    }

    /**
     * Adds a file from the disk to the archive.
     *
     * Triggers the `Builder::ADD_FILE` event.
     *
     *     $builder->addFile('/path/to/example.php', 'example.php');
     *
     * @see Phar::addFile
     *
     * @param string $file             The path to the file.
     * @param string $local (optional) The path to the file in the archive.
     *
     * @api
     */
    public function addFile($file, $local = null)
    {
        $this->invokeEvent(
            self::ADD_FILE,
            array(
                'file' => $file,
                'local' => $local
            )
        );
    }

    /**
     * Adds a file from a string to the archive.
     *
     * Triggers the `Builder::ADD_STRING` event.
     *
     *     $builder->addFromString('example.php', '<?php echo "Hello!\n";');
     *
     * @see Phar::addFromString
     *
     * @param string $local    The path to the file in the archive.
     * @param string $contents The contents of the file.
     *
     * @api
     */
    public function addFromString($local, $contents)
    {
        $this->invokeEvent(
            self::ADD_STRING,
            array(
                'local' => $local,
                'contents' => $contents
            )
        );
    }

    /**
     * Builds the archive using the files in a directory path.
     *
     * Triggers the `Builder::BUILD_DIR` event.
     *
     *     $builder->buildFromDirectory('/path/to/example', '/(src|lib)/');
     *
     * @param string $dir              The directory path.
     * @param string $regex (optional) The regular expression filter.
     *
     * @return array An array mapping internal paths to external files.
     *
     * @api
     */
    public function buildFromDirectory($dir, $regex = null)
    {
        return $this->invokeEvent(
            self::BUILD_DIR,
            array(
                'dir' => $dir,
                'regex' => $regex
            )
        );
    }

    /**
     * Builds the archive using an iterator.
     *
     * Triggers the `Builder::BUILD_ITERATOR` event.
     *
     *     $iterator = new RecursiveIteratorIterator(
     *         new RecursiveDirectoryIterator('/path/to/example')
     *     );
     *
     *     $builder->buildFromIterator($iterator, '/path/to/example');
     *
     * > Note that if the iterator returns instances of `SplFileInfo`,
     * > the `$base` argument becomes required.
     *
     * @param Iterator $iterator            An iterator.
     * @param string   $base     (optional) The base directory path.
     *
     * @return array An array mapping internal paths to external files.
     *
     * @api
     */
    public function buildFromIterator(Iterator $iterator, $base = null)
    {
        return $this->invokeEvent(
            self::BUILD_ITERATOR,
            array(
                'iterator' => $iterator,
                'base' => $base
            )
        );
    }

    /**
     * Creates a new `Phar` and `Builder` instance.
     *
     * This method is a shorter version of first creating a new instance of
     * `Phar`, and then a new instance of `Builder`. The following example:
     *
     *     use Phine\Phar\Builder;
     *
     *     $phar = new Phar('example.phar');
     *
     *     $builder = new Builder($phar);
     *
     * Is the same as this:
     *
     *     use Phine\Phar\Builder;
     *
     *     $builder = Builder::create('example.phar');
     *
     * @param string $file The PHP archive file path.
     *
     * @return Builder The new builder instance.
     *
     * @api
     */
    public static function create($file)
    {
        return new Builder(new Phar($file));
    }

    /**
     * Returns the `Phar` instance being built with.
     *
     * This method will return the `Phar` instance that is being used to
     * build the archive file.
     *
     *     $phar = $builder->getPhar();
     *
     * @return Phar The `Phar` instance.
     *
     * @api
     */
    public function getPhar()
    {
        return $this->phar;
    }

    /**
     * Registers an event observer with a subject.
     *
     * This method is a shortcut to the builder subject's `registerObserver()`
     * method. Instead of doing the following example:
     *
     *     use Phine\Observer\SubjectInterface;
     *     use Phine\Phar\Builder;
     *
     *     $builder
     *         ->getSubject(Builder::ADD_STRING)
     *         ->registerObserver(
     *             new Observer(),
     *             SubjectInterface::FIRST_PRIORITY
     *         );
     *
     * You may instead do the following example:
     *
     *     use Phine\Observer\SubjectInterface;
     *     use Phine\Phar\Builder;
     *
     *     $builder->observe(
     *         Builder::ADD_STRING,
     *         new Observer(),
     *         SubjectInterface::FIRST_PRIORITY
     *     );
     *
     * @see SubjectInterface::registerObserver
     *
     * @param string            $id                  The event subject identifier.
     * @param ObserverInterface $observer            The event subject observer.
     * @param integer           $priority (optional) The priority of the observer.
     *
     * @api
     */
    public function observe(
        $id,
        ObserverInterface $observer,
        $priority = SubjectInterface::FIRST_PRIORITY
    ) {
        $this->getSubject($id)->registerObserver($observer, $priority);
    }

    /**
     * Sets the stub used to bootstrap the archive.
     *
     * Triggers the `Builder::SET_STUB` event.
     *
     *     $builder->setStub($stub);
     *
     * @param string $stub The archive stub.
     *
     * @api
     */
    public function setStub($stub)
    {
        $this->invokeEvent(
            self::SET_STUB,
            array(
                'stub' => $stub
            )
        );
    }

    /**
     * Registers the default event subjects.
     *
     * The following is a list of events registered by this method:
     *
     * - `Builder::ADD_DIR` &mdash; `Phine\Phar\Subject\Builder\AddDirectory`
     * - `Builder::ADD_FILE` &mdash; `Phine\Phar\Subject\Builder\AddFile`
     * - `Builder::ADD_STRING` &mdash; `Phine\Phar\Subject\Builder\AddString`
     * - `Builder::BUILD_DIR` &mdash; `Phine\Phar\Subject\Builder\BuildDirectory`
     * - `Builder::BUILD_ITERATOR` &mdash; `Phine\Phar\Subject\Builder\BuildIterator`
     * - `Builder::SET_STUB` &mdash; `Phine\Phar\Subject\Builder\SetStub`
     *
     * @api
     */
    protected function registerDefaultSubjects()
    {
        $this->registerSubject(self::ADD_DIR, new Subject\AddDirectory($this));
        $this->registerSubject(self::ADD_FILE, new Subject\AddFile($this));
        $this->registerSubject(self::ADD_STRING, new Subject\AddString($this));
        $this->registerSubject(self::BUILD_DIR, new Subject\BuildDirectory($this));
        $this->registerSubject(self::BUILD_ITERATOR, new Subject\BuildIterator($this));
        $this->registerSubject(self::SET_STUB, new Subject\SetStub($this));
    }

    /**
     * Invokes an event after setting new method argument values.
     *
     * @param string $id     The event subject identifier.
     * @param array  $values The new method argument values.
     *
     * @return mixed Any value, if available.
     */
    private function invokeEvent($id, array $values)
    {
        /** @var AbstractSubject $subject */
        $subject = $this->getSubject($id);
        $subject->setArguments(new Arguments($values));

        return $subject->notifyObservers();
    }
}
<?php

namespace Phine\Phar\Subject;

use Exception;
use Phine\Observer\Subject;
use Phine\Phar\Builder;
use Phine\Phar\Exception\BuilderException;
use Phine\Phar\Subject\Arguments;

/**
 * Provides the basis for a builder event subject.
 *
 * Summary
 * -------
 *
 * The `AbstractSubject` class provides a foundation in which new subjects
 * can be easily created. The abstract class provides a way to accept `Builder`
 * and `Argument` instances, as well as making sure that the instances are not
 * accidentally replaced in mid update.
 *
 * Starting
 * --------
 *
 * To use the `AbstractSubject` class, you need to create your own.
 *
 *     class MySubject extends AbstractSubject
 *     {
 *         protected function doLastStep()
 *         {
 *             // do my thing here
 *         }
 *     }
 *
 * What ever action you need to do when the event concludes, you will need to
 * do it in the `doLastStep()` method. From this method, you will be able to
 * access the builder (`$this->builder`) and arguments (`$this->arguments`).
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
abstract class AbstractSubject extends Subject
{
    /**
     * The managed method arguments to be used in an observer update.
     *
     * @var Arguments
     *
     * @api
     */
    protected $arguments;

    /**
     * The PHP archive builder.
     *
     * @var Builder
     *
     * @api
     */
    protected $builder;

    /**
     * Sets the PHP archive builder.
     *
     * This method will create a new subject instances and set the builder.
     *
     *     use Phine\Phar\Subject\AbstractSubject;
     *
     *     $subject = new AbstractSubject($builder);
     *
     * > Note that you cannot actually instantiate the abstract subject class.
     * > You will need to create a class which would extend this one, and will
     * > implement the `doLastStep()` method.
     *
     * @param Builder $builder The builder.
     *
     * @api
     */
    public function __construct(Builder $builder)
    {
        $this->builder = $builder;
    }

    /**
     * Returns the method arguments to be used for an observer update.
     *
     * This method will return the `Arguments` instance used for the subject.
     *
     *     $arguments = $subject->getArguments();
     *
     * @return Arguments The managed method arguments.
     *
     * @api
     */
    public function getArguments()
    {
        return $this->arguments;
    }

    /**
     * {@inheritDoc}
     */
    public function notifyObservers()
    {
        parent::notifyObservers();

        return $this->doLastStep();
    }

    /**
     * Sets the method arguments to be used for an observer update.
     *
     * This method will set the arguments passed to the method this subject
     * is for.
     *
     *     $subject->setArguments($arguments);
     *
     * Note that the arguments can only be changed before or after a subject
     * has been updated, and not during. Doing so will trigger an exception
     * since all the work any observer would have done will be lost.
     *
     * @param Arguments $args The managed method arguments.
     *
     * @throws BuilderException If an observer update is in progress.
     *
     * @api
     */
    public function setArguments(Arguments $args)
    {
        if ($this->isUpdating()) {
            throw BuilderException::isUpdating();
        }

        $this->arguments = $args;
    }

    /**
     * Performs the last step after of the event.
     *
     * This method will only be called if all observers have been successfully
     * notified. If an error is triggered or the update process is interrupted,
     * this method will not be called.
     *
     * @return mixed Any value, if available.
     *
     * @api
     */
    abstract protected function doLastStep();
}
<?php

namespace Phine\Phar\Subject\Builder;

use Phine\Phar\Subject\AbstractSubject;

/**
 * Adds a empty directory to the archive.
 *
 * @author Kevin Herrera <kevin@herrera.io>
 */
class AddDirectory extends AbstractSubject
{
    /**
     * @override
     */
    protected function doLastStep()
    {
        $this->builder->getPhar()->addEmptyDir($this->arguments['name']);
    }
}
<?php

namespace Phine\Phar\Subject\Builder;

use Phine\Phar\Subject\AbstractSubject;

/**
 * Adds a file from a string to the archive.
 *
 * @author Kevin Herrera <kevin@herrera.io>
 */
class AddString extends AbstractSubject
{
    /**
     * @override
     */
    protected function doLastStep()
    {
        $this->builder->getPhar()->addFromString(
            $this->arguments['local'],
            $this->arguments['contents']
        );
    }
}
<?php

namespace Phine\Phar\Subject\Builder;

use Phine\Phar\Subject\AbstractSubject;

/**
 * Builds the archive using a directory path.
 *
 * @author Kevin Herrera <kevin@herrera.io>
 */
class BuildDirectory extends AbstractSubject
{
    /**
     * @override
     */
    protected function doLastStep()
    {
        return $this->builder->getPhar()->buildFromDirectory(
            $this->arguments['dir'],
            $this->arguments['regex']
        );
    }
}
<?php

namespace Phine\Phar\Subject\Builder;

use Phine\Phar\Subject\AbstractSubject;

/**
 * Sets the stub for the archive.
 *
 * @author Kevin Herrera <kevin@herrera.io>
 */
class SetStub extends AbstractSubject
{
    /**
     * @override
     */
    protected function doLastStep()
    {
        $this->builder->getPhar()->setStub($this->arguments['stub']);
    }
}
<?php

namespace Phine\Phar\Subject\Builder;

use Phine\Phar\Subject\AbstractSubject;

/**
 * Adds a file from the disk to the archive.
 *
 * @author Kevin Herrera <kevin@herrera.io>
 */
class AddFile extends AbstractSubject
{
    /**
     * @override
     */
    protected function doLastStep()
    {
        if ($this->arguments['local']) {
            $this->builder->getPhar()->addFile(
                $this->arguments['file'],
                $this->arguments['local']
            );
        } else {
            $this->builder->getPhar()->addFile($this->arguments['file']);
        }
    }
}
<?php

namespace Phine\Phar\Subject\Builder;

use Phine\Phar\Subject\AbstractSubject;

/**
 * Builds the archive using an iterator.
 *
 * @author Kevin Herrera <kevin@herrera.io>
 */
class BuildIterator extends AbstractSubject
{
    /**
     * @override
     */
    protected function doLastStep()
    {
        return $this->builder->getPhar()->buildFromIterator(
            $this->arguments['iterator'],
            $this->arguments['base']
        );
    }
}
<?php

namespace Phine\Phar\Subject;

use ArrayAccess;
use ArrayIterator;
use IteratorAggregate;
use Phine\Phar\Exception\BuilderException;

/**
 * Manages a list of overridable method arguments.
 *
 * Summary
 * -------
 *
 * The `Arguments` class is used to manage arguments passed to a method, which
 * is then passed on to an event observer through the subject it is observing.
 * An instance of `Arguments` will contain a finite set of arguments that cannot
 * be added or removed from, however, the values can be changed. If a value is
 * changed, an observer will still be able to retrieve the original argument
 * value that was passed to the method.
 *
 * > Note that values as changed will be preserved for the next observer to
 * > use.
 *
 * Starting
 * --------
 *
 * To start, you will need to create a new instance of `Arguments`.
 *
 *     use Phine\Phar\Subject\Arguments;
 *
 *     $arguments = new Arguments(
 *         array(
 *             'name' => 'value'
 *         )
 *     );
 *
 * The array key is the name of an argument, and the value is the value of the
 * argument. Once the instance has been created, new arguments cannot be set,
 * and existing arguments cannot be removed.
 *
 * ### Changing Values
 *
 * To change the value of an argument, access the instance as an array and set
 * the value.
 *
 *     $arguments['name'] = 'new value';
 *
 * To access the original value, you will need to call the `getOriginalValue()`
 * method.
 *
 *     $originalValue = $arguments->getOriginalValue('name'); // "value"
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
class Arguments implements ArrayAccess, IteratorAggregate
{
    /**
     * The original method arguments.
     *
     * @var array
     */
    private $original = array();

    /**
     * The overriding method arguments.
     *
     * @var array
     */
    private $override = array();

    /**
     * Sets the original method arguments.
     *
     * This method will set the list of original argument values.
     *
     *     use Phine\Phar\Subject\Arguments;
     *
     *     $arguments = new Arguments(
     *         array(
     *             'name' => 'value'
     *         )
     *     );
     *
     * @param array $args The method arguments.
     *
     * @api
     */
    public function __construct(array $args)
    {
        $this->original = $args;
    }

    /**
     * Returns the current method arguments for iterating.
     *
     * This method will return an array iterator. It will... allow you to
     * iterate through the arguments.
     *
     *     foreach ($arguments as $name => $value) {
     *         // iteratin'
     *     }
     *
     * @return ArrayIterator The arguments iterator.
     *
     * @api
     */
    public function getIterator()
    {
        return new ArrayIterator(
            array_replace($this->original, $this->override)
        );
    }

    /**
     * Returns the original value for an argument.
     *
     * This method will return the original value of the specified argument.
     *
     *     $originalValue = $arguments->getOriginalValue('name');
     *
     * @param string $name The name of an argument.
     *
     * @throws BuilderException If the argument is not defined.
     *
     * @api
     */
    public function getOriginalValue($name)
    {
        if (!isset($this->original[$name])) {
            throw BuilderException::argNotDefined($name);
        }

        return $this->original[$name];
    }

    /**
     * Checks if an argument is defined.
     *
     * This method will check if the specified argument exists.
     *
     *     if (isset($arguments['name'])) {
     *         // exists
     *     } else {
     *         // does not exist
     *     }
     *
     * Note that even if an argument value is `null`, `true` will still be
     * returned if the argument has been defined.
     *
     * @param string $name The name of an argument.
     *
     * @return boolean Returns `true` if defined, `false` if not.
     *
     * @api
     */
    public function offsetExists($name)
    {
        return array_key_exists($name, $this->original);
    }

    /**
     * Returns the value for an argument.
     *
     * This method will return the value for the argument.
     *
     *     $value = $arguments['name'];
     *
     * If the original argument value was changed, the new value will be
     * returned. If the original argument value was not changed, the original
     * value will be returned.
     *
     * @param string $name The name of an argument.
     *
     * @return mixed The value of the argument.
     *
     * @throws BuilderException If the argument is not defined.
     *
     * @api
     */
    public function offsetGet($name)
    {
        if (!array_key_exists($name, $this->original)) {
            throw BuilderException::argNotDefined($name);
        }

        if (array_key_exists($name, $this->override)) {
            return $this->override[$name];
        }

        return $this->original[$name];
    }

    /**
     * Sets the override value for an argument.
     *
     * This method will replace the original value of the argument.
     *
     *     $arguments['name'] = 'new value';
     *
     * Technically, the value is not replace. What will happen is that the
     * new value set will be returned (when accessed) instead of the original
     * one.
     *
     * @param string $name  The name of an argument.
     * @param mixed  $value The value of the argument.
     *
     * @throws BuilderException If the argument is not defined.
     *
     * @api
     */
    public function offsetSet($name, $value)
    {
        if (!array_key_exists($name, $this->original)) {
            throw BuilderException::argNotDefined($name);
        }

        $this->override[$name] = $value;
    }

    /**
     * Restores the original value of an argument.
     *
     * This method will restore the original value of an argument.
     *
     *     $arguments['name'] = 'new value';
     *
     *     unset($arguments['name']);
     *
     *     echo $arguments['name']; // "value"
     *
     * If the original value is already restored, `unset()`ing an argument
     * will not do anything.
     *
     * @param string $name The name of an argument.
     *
     * @throws BuilderException If the argument is not defined.
     *
     * @api
     */
    public function offsetUnset($name)
    {
        if (!array_key_exists($name, $this->original)) {
            throw BuilderException::argNotDefined($name);
        }

        unset($this->override[$name]);
    }
}
<?php

namespace Phine\Phar\Stub;

use InvalidArgumentException;
use RuntimeException;

/**
 * Embeddable, self-contained archive extractor.
 *
 * The purpose of this extraction class is for embedding it into the stub.
 * This will allow archives to extract themselves for execution when the
 * extension is not installed. Unlike the extraction class provided by the
 * default stub, error checking is performed to provide better diagnostic
 * information if an archive is corrupt.
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
final class Extract
{
    /**
     * The bzip2 compression flag.
     *
     * @internal
     */
    const BZ2 = 0x2000;

    /**
     * The gzip compression flag.
     *
     * @internal
     */
    const GZ = 0x1000;

    /**
     * The flag mask.
     *
     * @internal
     */
    const MASK = 0x3000;

    /**
     * The list of support compression algorithms.
     *
     * @var array
     */
    private $compression = array();

    /**
     * The path to the file.
     *
     * @var string
     */
    private $file;

    /**
     * The file handle.
     *
     * @var resource
     */
    private $handle;

    /**
     * The starting offset of the archive.
     *
     * @var integer
     */
    private $offset;

    /**
     * The sequence of characters that precedes the archive.
     *
     * @var array
     */
    private static $sequence = array(
        '_', '_', 'h', 'a', 'l', 't',
        '_', 'c', 'o', 'm', 'p', 'i', 'l', 'e', 'r',
        '(', ')', ';', ' ', '?', '>'
    );

    /**
     * Sets the path of the file for reading.
     *
     * @param string $file The path of the file.
     *
     * @throws InvalidArgumentException If the file path is not valid.
     *
     * @internal
     */
    public function __construct($file)
    {
        if (!is_file($file)) {
            throw new InvalidArgumentException(
                "The path \"$file\" is not a file or does not exist."
            );
        }

        $this->compression['bzip2'] = function_exists('bzdecompress');
        $this->compression['gzip'] = function_exists('gzinflate');
        $this->file = $file;
    }

    /**
     * Closes the file if it's open.
     *
     * @internal
     */
    public function __destruct()
    {
        if ($this->handle) {
            fclose($this->handle);
        }
    }

    /**
     * Creates a new instance using the given archive file path.
     *
     * @param string $file The archive file path.
     *
     * @return Extract The new instance.
     *
     * @internal
     */
    public static function from($file)
    {
        return new self($file);
    }

    /**
     * Returns the embeddable source for this class.
     *
     * This method will return the compacted source code of this class so
     * that it can be embedded as part of the stub. Note that this is the
     * only method in the class that is part of the public API.
     *
     *     use Phine\Phar\Builder;
     *     use Phine\Phar\Stub;
     *     use Phine\Phar\Stub\Extract;
     *
     *     Builder::create('example.phar')->setStub(
     *         Stub::create()
     *             ->addSource(Extract::getSource())
     *             ->getStub()
     *     );
     *
     * @return string The source code.
     *
     * @throws RuntimeException If the file could not be read.
     *
     * @api
     */
    public static function getSource()
    {
        if (false === ($code = @file(__FILE__))) {
            $error = error_get_last();

            throw new RuntimeException($error['message']);
        }

        $code = array_slice($code, 6);

        foreach ($code as $i => $line) {
            if ('' === trim($line)) {
                unset($code[$i]);
                continue;
            }

            if (preg_match('{^\s*(/\*+|\*+)}', $line)) {
                unset($code[$i]);
            }
        }

        return join('', $code);
    }

    /**
     * Extracts one or more files to an output directory.
     *
     * @param string $dir The output directory path.
     *
     * @return string The output directory path.
     *
     * @throws RuntimeException If a file could not be extracted.
     *
     * @internal
     */
    public function to($dir = null)
    {
        if (null === $dir) {
            $dir = sprintf(
                '%s%spharextract%s%s',
                sys_get_temp_dir(),
                DIRECTORY_SEPARATOR,
                DIRECTORY_SEPARATOR,
                basename($this->file, '.phar')
            );
        }

        $check = $dir . DIRECTORY_SEPARATOR . md5_file($this->file);

        if (file_exists($check)) {
            return $dir;
        }

        if (null === $this->offset) {
            $this->offset = $this->findOffset();
        }

        foreach ($this->getFileList() as $file) {
            $path = $dir . '/' . $file['name']['data'];
            $base = dirname($path);

            if (!is_dir($base)) {
                if (!@mkdir($base, 0755, true)) {
                    $error = error_get_last();

                    throw new RuntimeException($error['message']);
                }
            }

            if (!@file_put_contents($path, $this->extractFile($file))) {
                $error = error_get_last();

                throw new RuntimeException($error['message']);
            }
        }

        if (!@touch($check)) {
            $error = error_get_last();

            throw new RuntimeException($error['message']);
        }

        return $dir;
    }

    /**
     * Returns the contents of a file from the archive.
     *
     * @param array $file The file information from the archive.
     *
     * @return string The decompressed file contents.
     *
     * @throws RuntimeException If the file could not be decompressed.
     */
    private function extractFile(array $file)
    {
        $this->seek($file['offset']);

        $contents = $this->read($file['size']['compressed']);

        if ($file['flags'] & self::BZ2) {
            if (!$this->compression['bzip2']) {
                throw new RuntimeException(
                    "The \"bz2\" extension is required to decompress \"{$file['name']['data']}\"."
                );
            }

            $contents = bzdecompress($contents);
        } elseif ($file['flags'] & self::GZ) {
            if (!$this->compression['gzip']) {
                throw new RuntimeException(
                    "The \"zlib\" extension is required to decompress \"{$file['name']['data']}\"."
                );
            }

            $contents = gzinflate($contents);
        }

        return $contents;
    }

    /**
     * Finds the archive offset of an archive.
     *
     * @return integer If the archive offset is found, it is returned. If a
     *                 archive offset is not found, `null` is returned.
     */
    private function findOffset()
    {
        $this->seek(0);

        $offset = 0;

        while (!$this->isEndOfFile()) {
            if (strtolower($this->read(1)) === self::$sequence[$offset]) {
                $offset++;
            } else {
                $offset = 0;
            }

            if (!isset(self::$sequence[$offset + 1])) {
                break;
            }
        }

        $this->seek(1, SEEK_CUR);

        if ($offset === (count(self::$sequence) - 1)) {
            $position = $this->getPosition();

            if ("\r\n" === $this->read(2)) {
                return $position + 2;
            }

            return $position;
        }

        return null;
    }

    /**
     * Returns the size of the stream alias in bytes.
     *
     * @return integer The size of the alias in bytes.
     */
    private function getAliasSize()
    {
        $this->seek($this->offset + 14);

        return $this->readLong();
    }

    /**
     * Returns the number of files listed in the archive.
     *
     * @return integer The number of files in the archive.
     */
    private function getFileCount()
    {
        $this->seek($this->offset + 4);

        return $this->readLong();
    }

    /**
     * Returns the list of files in the archive.
     *
     * @return array The list of files in the archive.
     */
    private function getFileList()
    {

        $count = $this->getFileCount();
        $size = $this->getSize() + 4;

        $this->seek(
            $this->offset
            + 18
            + $this->getAliasSize()
            + 4
            + $this->getMetadataSize()
        );

        return $this->readFileList($count, $size);
    }

    /**
     * Returns the reading file handle.
     *
     * @return resource The file handle.
     *
     * @throws RuntimeException If the file could not be opened for reading.
     */
    private function getHandle()
    {
        if (null === $this->handle) {
            if (false === ($this->handle = @fopen($this->file, 'rb'))) {
                $error = error_get_last();

                throw new RuntimeException($error['message']);
            }
        }

        return $this->handle;
    }

    /**
     * Returns the size of the metadata in bytes.
     *
     * @return integer The size of the metadata in bytes.
     */
    private function getMetadataSize()
    {
        $this->seek($this->offset + 18 + $this->getAliasSize());

        return $this->readLong();
    }

    /**
     * Returns the current position of the file pointer.
     *
     * @return integer The current position.
     *
     * @throws RuntimeException If the size could not be read.
     */
    private function getPosition()
    {
        if (false === ($position = @ftell($this->getHandle()))) {
            $error = error_get_last();

            throw new RuntimeException($error['message']);
        }

        return $position;
    }

    /**
     * Returns the size of the archive in bytes.
     *
     * @return integer The size of the archive in bytes.
     */
    private function getSize()
    {
        $this->seek($this->offset);

        return $this->readLong();
    }

    /**
     * Checks if the end of the file has been reached.
     *
     * Before `feof()` is called, an attempt is made to reach a single byte
     * from the file. If the read fails, then the `feof()` is made to actually
     * determine the if the end of the file has been reached. If the EOF is not
     * reached, the file handle will be seeked back the one byte that was read.
     *
     * @return boolean If the end of the file has been reached, `false` is
     *                 returned. If the end of the file has not been reached,
     *                 `true` is returned.
     */
    private function isEndOfFile()
    {
        $handle = $this->getHandle();

        if (false === @fgetc($handle)) {

            return feof($handle);
        } else {
            fseek($handle, -1, SEEK_CUR);
        }

        return false;
    }

    /**
     * Reads a specific number of bytes from the file.
     *
     * @param integer $bytes The number of bytes.
     *
     * @return string The bytes read.
     *
     * @throws RuntimeException If not all the bytes were read.
     */
    private function read($bytes)
    {
        $read = '';
        $total = $bytes;

        while (!$this->isEndOfFile() && $bytes) {
            if (false === ($chunk = @fread($this->getHandle(), $bytes))) {
                $error = error_get_last();

                throw new RuntimeException($error['message']);
            }

            $read .= $chunk;
            $bytes -= strlen($chunk);
        }

        if ($total !== ($actual = strlen($read))) {
            throw new RuntimeException(
                "Only read $actual bytes of $total from \"{$this->file}\"."
            );
        }

        return $read;
    }

    /**
     * Reads the expected number of files from the archive.
     *
     * @param integer $expected The expected number of files.
     * @param integer $size     The size of the archive.
     *
     * @return array The list of files.
     */
    private function readFileList($expected, $size)
    {
        $files = array();
        $offset = $this->offset + $size;

        for ($i = 0; $i < $expected; $i++) {
            $file = array(
                'crc32'=> null,
                'flags' => null,
                'metadata' => array(
                    'data' => null,
                    'size' => null,
                ),
                'name' => array(
                    'data' => null,
                    'size' => null,
                ),
                'offset' => $offset,
                'size' => array(
                    'compressed' => null,
                    'uncompressed' => null,
                ),
                'time' => null,
            );

            $file['name']['size'] = $this->readLong();
            $file['name']['data'] = $this->read($file['name']['size']);
            $file['size']['uncompressed'] = $this->readLong();
            $file['time'] = $this->readLong();
            $file['size']['compressed'] = $this->readLong();
            $file['crc32'] = $this->readLong();
            $file['flags'] = $this->readLong() & self::MASK;
            $file['metadata']['size'] = $this->readLong();

            $offset += $file['size']['compressed'];
            $files[] = $file;
        }

        return $files;
    }

    /**
     * Reads and unpacks an unsigned long.
     *
     * @return integer The unsigned long.
     */
    private function readLong()
    {
        $long = unpack('V', $this->read(4));
        $long = (int) $long[1];

        return $long;
    }

    /**
     * Seeks to a specific point in the file.
     *
     * @param integer $offset The offset.
     * @param integer $whence The direction.
     *
     * @throws RuntimeException If seeking failed.
     */
    private function seek($offset, $whence = SEEK_SET)
    {
        if (-1 === @fseek($this->getHandle(), $offset, $whence)) {
            throw new RuntimeException(
                "Could not seek to $offset in \"{$this->file}\"."
            );
        }
    }
}
<?php

namespace Phine\Phar;

use Phine\Phar\Stub\Extract as Embed;

/**
 * Generates a new PHP archive stub.
 *
 * Summary
 * -------
 *
 * The `Stub` class provides a relatively simple method of generating a
 * potentially complex archive file stub. With the stub generator, you can:
 *
 * - load files (useful for loading a bootstrap file)
 * - embed source code
 * - enable self-extraction (run on servers without the `phar` extension)
 * - set a banner comment
 * - set the shebang line
 * - use `phar` extension functionality:
 *     - `Phar::interceptFileFuncs()`
 *     - `Phar::loadPhar()`
 *     - `Phar::mapPhar()`
 *     - `Phar::mount()`
 *     - `Phar::mungServer()`
 *     - `Phar::webPhar()`
 *
 * Starting
 * --------
 *
 * To start, you will need to create a new instance of `Stub`.
 *
 * You may create a stub generator in one of two ways:
 *
 *     use Phine\Phar\Stub;
 *
 *     $stub = new Stub();
 *
 * Or you may call the static `create()` method:
 *
 *     $stub = Stub::create();
 *
 * The latter example will allow you to skip a variable assignment altogether:
 *
 *     $builder->setStub(
 *         Stub::create()
 *             ->addRequire('bin/main')
 *             ->getStub()
 *     );
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
class Stub
{
    /**
     * The banner comment.
     *
     * @var string
     */
    private $banner;

    /**
     * The interceptFileFuncs() flag.
     *
     * @var boolean
     */
    private $interceptFileFuncs = false;

    /**
     * The list of archives to load.
     *
     * @var array
     */
    private $loadPhar = array();

    /**
     * The stream alias to map to the archive.
     *
     * @var string
     */
    private $mapPhar;

    /**
     * The list of archives to mount.
     *
     * @var array
     */
    private $mount = array();

    /**
     * The list of server variables to modify.
     *
     * @var array
     */
    private $mungServer = array();

    /**
     * The list of files to require.
     *
     * @var array
     */
    private $require = array();

    /**
     * The "self extracting" flag.
     *
     * @var boolean
     */
    private $selfExtract = false;

    /**
     * The archive shebang line.
     *
     * @var string
     */
    private $shebang = '#!/usr/bin/env php';

    /**
     * The source code to embed.
     *
     * @var array
     */
    private $source = array();

    /**
     * The web archive settings.
     *
     * @var array
     */
    private $webPhar;

    /**
     * Adds a file to require.
     *
     * This method will add a file path to that will be `require()`'d in the
     * stub, after `phar` extension function calls and embedded source code.
     *
     *     $stub->addRequire('internal/path/to/file.php');
     *
     * You may also load an external file by passing `false` as the second
     * argument (`$internal`):
     *
     *     $stub->addRequire('/external/path/to/file.php', false);
     *
     * @param string  $path                The file path.
     * @param boolean $internal (optional) Is it an internal path?
     *
     * @return Stub The stub generator.
     *
     * @api
     */
    public function addRequire($path, $internal = true)
    {
        $this->require[] = array($path, $internal);

        return $this;
    }

    /**
     * Adds source code to embed.
     *
     * This method will embed PHP source code into the stub.
     *
     *     $stub->addSource('my_function_call();');
     *
     * If `$after` is `true`, the source code will be embedded after all of
     * the `require`s have been added to the stub. If it is `false`, it will
     * be embedded before the `require`s.
     *
     * @param string  $source            The source code.
     * @param boolean $after  (optional) Embed after the require(s)?
     *
     * @return Stub The stub generator.
     *
     * @api
     */
    public function addSource($source, $after = true)
    {
        $this->source[] = array($source, $after);

        return $this;
    }

    /**
     * Creates a new stub generator.
     *
     * This method will simply create a new instance of this class.
     *
     *     $stub = Stub::create();
     *
     * The above example is the same as:
     *
     *     $stub = new Stub();
     *
     * @return Stub The new stub generator.
     *
     * @api
     */
    public static function create()
    {
        return new self();
    }

    /**
     * Generates a stub according to the current settings.
     *
     * This method will generate the new stub based on the configuration that
     * was set using the other instance methods of this class. If the stub has
     * not been configured, an "empty" stub is returned:
     *
     *     #!/usr/bin/env php
     *     <?php
     *
     *
     *     __HALT_COMPILER();
     *
     * @return string The generated stub.
     *
     * @api
     */
    public function getStub()
    {
        $stub = '';

        if ($this->shebang) {
            $stub = $this->shebang . "\n";
        }

        $stub .= "<?php\n\n";
        $export = function ($value) {
            return var_export($value, true);
        };

        if ($this->banner) {
            $stub .= sprintf(
                "/*\n * %s\n */\n\n",
                preg_replace(
                    '/\s+$/m',
                    '',
                    join("\n * ", explode("\n", $this->banner))
                )
            );
        }

        $extension = false;

        if ($this->mapPhar
            || $this->webPhar
            || $this->interceptFileFuncs
            || $this->mungServer
            || $this->mount) {
            $extension = true;
            $stub .= <<<STUB
if (class_exists('Phar')) {
\$include = 'phar://' . __FILE__;

STUB;
        }

        if ($this->mapPhar) {
            $stub .= sprintf(
                "Phar::mapPhar(%s);\n",
                $export($this->mapPhar)
            );
        }

        if ($this->webPhar) {
            $stub .= sprintf(
                "Phar::webPhar(%s, %s, %s, %s, %s);\n",
                $export($this->webPhar[0]),
                $export($this->webPhar[1]),
                $export($this->webPhar[2]),
                $export($this->webPhar[3]),
                $export($this->webPhar[4])
            );
        }

        if ($this->interceptFileFuncs) {
            $stub .= "Phar::interceptFileFuncs();\n";
        }

        if ($this->mungServer) {
            $stub .= sprintf(
                "Phar::mungServer(%s);\n",
                $export($this->mungServer)
            );
        }

        foreach ($this->mount as $paths) {
            $stub .= sprintf(
                "Phar::mount(%s, %s);\n",
                $export($paths[0]),
                $export($paths[1])
            );
        }

        foreach ($this->loadPhar as $phar) {
            $stub .= sprintf(
                "Phar::loadPhar(%s, %s);\n",
                $export($phar[0]),
                $export($phar[1])
            );
        }

        if ($this->selfExtract) {
            $stub .= <<<STUB
} else {
\$include = Extract::from(__FILE__)->to();
set_include_path(\$include . PATH_SEPARATOR . get_include_path());
}

STUB;
        } elseif ($extension) {
            $stub .= <<<STUB
} else {
throw new Exception('The "phar" extension is required to run this archive.');
}
STUB;
        }

        if ($this->source) {
            $stub .= "\n";
        }

        foreach ($this->source as $source) {
            if (!$source[1]) {
                $stub .= "{$source[0]}\n";
            }
        }

        if ($this->require
            && ($this->mapPhar
                || $this->webPhar
                || $this->interceptFileFuncs
                || $this->mungServer
                || $this->mount
                || $this->loadPhar)
        ) {
            $stub .= "\n";
        }

        foreach ($this->require as $file) {
            if ($file[1]) {
                if (!preg_match('/^[\\\\\/]/', $file[0])) {
                    $file[0] = '/' . $file[0];
                }

                $file = '$include . ' . $export($file[0]);
            } else {
                $file = $export($file[0]);
            }

            $stub .= "require $file;\n";
        }

        if ($this->source) {
            $stub .= "\n";
        }

        foreach ($this->source as $source) {
            if ($source[1]) {
                $stub .= "{$source[0]}\n";
            }
        }

        if ($this->selfExtract) {
            $stub .= "\n" . trim(Embed::getSource()) . "\n";
        }

        $stub .= "\n__HALT_COMPILER();";

        return $stub;
    }

    /**
     * Toggles the use of the `Phar::interceptFileFuncs()` method.
     *
     * This method will toggle the use of the `Phar::interceptFileFuncs()`
     * method inside the stub. By default, the use of the method will be
     * enabled if `$use` is not provided.
     *
     *     $stub->interceptFileFuncs();
     *
     * @see Phar::interceptFileFuncs()
     *
     * @param boolean $use (optional) Call the function?
     *
     * @return Stub The stub generator.
     *
     * @api
     */
    public function interceptFileFuncs($use = true)
    {
        $this->interceptFileFuncs = $use;

        return $this;
    }

    /**
     * Adds an archive file to load.
     *
     * This method will load an external archive file so that it can be used
     * inside the current archive. This is useful for loading assets or other
     * scripts.
     *
     *     $stub->loadPhar('/external/path/to/file.phar', 'myAlias.phar');
     *
     * @see Phar::loadPhar()
     *
     * @param string $file             The file path to the phar.
     * @param string $alias (optional) The stream alias for the phar.
     *
     * @return Stub The stub generator.
     *
     * @api
     */
    public function loadPhar($file, $alias = null)
    {
        $this->loadPhar[] = array($file, $alias);

        return $this;
    }

    /**
     * Sets the stream alias to map the archive to.
     *
     * This method will set the stream alias of the archive file.
     *
     *     $stub->mapPhar('myAlias.phar');
     *
     * > Note that caching may become an issue when using stream aliases
     * > for archives ([see here][]).
     *
     * [see here]: https://github.com/zendtech/ZendOptimizerPlus/issues/115#issuecomment-25612769
     *
     * @see Phar::mapPhar()
     *
     * @param string $alias The stream alias.
     *
     * @return Stub The stub generator.
     *
     * @api
     */
    public function mapPhar($alias)
    {
        $this->mapPhar = $alias;

        return $this;
    }

    /**
     * Mounts an external path inside the archive.
     *
     * This method will mount an external file path as if it were an internal
     * archive file path. This works for both files and directories, allowing
     * you to access items such as configuration files.
     *
     *     $stub->mount(
     *         'phar://internal/path/to/file.php',
     *         '/external/path/to/file.php'
     *     );
     *
     * @see Phar::mount()
     *
     * @param string $internal The internal path.
     * @param string $external The external path.
     *
     * @return Stub The stub generator.
     *
     * @api
     */
    public function mount($internal, $external)
    {
        $this->mount[] = array($internal, $external);

        return $this;
    }

    /**
     * Sets the list of server variables to modify.
     *
     * This method will set a list of `$_SERVER` variables that will need to
     * be modified for the archive. This functionality is intended to be used
     * in conjunction with the `Phar::webPhar()` method.
     *
     *     $stub->mungServer(
     *         array(
     *             'REQUEST_URI',
     *             'PHP_SELF',
     *             'SCRIPT_NAME',
     *             'SCRIPT_FILENAME'
     *         )
     *     );
     *
     * @see Phar::mungServer()
     *
     * @param array $vars The list of variables.
     *
     * @return Stub The stub generator.
     *
     * @api
     */
    public function mungServer(array $vars)
    {
        $this->mungServer = $vars;

        return $this;
    }

    /**
     * Toggles making the archive self extracting.
     *
     * This method will toggle embedding a self extraction class in the stub.
     * The class will allow the archive to still be executed in environments
     * that do not have the `phar` extension installed. Note that support is
     * limited, since not all functionality can be supported without the
     * extension.
     *
     *     $stub->selfExtracting();
     *
     * @param boolean $extract (optional) Make archive self extracting?
     *
     * @return Stub The stub generator.
     *
     * @api
     */
    public function selfExtracting($extract = true)
    {
        $this->selfExtract = $extract;

        return $this;
    }

    /**
     * Sets the banner comment.
     *
     * This method will set the banner comment that will be presented at the
     * very beginning of the stub. This is useful for displaying information
     * such as licensing, copyright, and more.
     *
     *     $stub->setBanner(
     *         <<<BANNER
     *     This is my comment.
     *
     *     It can span multiple lines.
     *
     *         And event be indented.
     *     BANNER
     *     );
     *
     * > Note that the banner comment provided will be automatically wrapped
     * > as a multi-line comment (non-doc)block. Do not nest comments, as it
     * > will result in a PHP parsing error.
     *
     * @param string $banner The comment.
     *
     * @return Stub The stub generator.
     *
     * @api
     */
    public function setBanner($banner)
    {
        $this->banner = $banner;

        return $this;
    }

    /**
     * Sets the shebang line.
     *
     * This method will set the shebang line used to execute the archive.
     *
     *     $stub->setShebang('#!/usr/bin/env php5.5');
     *
     * By default, the shebang line is:
     *
     *     #!/usr/bin/env php
     *
     * You can remove this line by passing an empty string or `null`.
     *
     * @param string $shebang The shebang line.
     *
     * @return Stub The stub generator.
     *
     * @api
     */
    public function setShebang($shebang)
    {
        $this->shebang = $shebang;

        return $this;
    }

    /**
     * Sets the settings for the `Phar::webPhar()` method.
     *
     * This set the parameters that will be given to `Phar::webPhar()` when
     * it is called in the stub. If this method is not called, the `Phar`
     * method will not be called in the stub. You may call this method without
     * any arguments to use the default values.
     *
     *     $stub->webPhar();
     *
     * (alternatively)
     *
     *     $stub->webPhar(
     *         'myAlias.phar',
     *         'internal/path/to/index.php',
     *         'internal/path/to/404.php',
     *         array(
     *             // file extension => mime type
     *         ),
     *         'my_rewrite_function'
     *     );
     *
     * @param string $alias    (optional) The stream alias.
     * @param string $index    (optional) The index internal file path.
     * @param string $notFound (optional) The 404 internal file path.
     * @param array  $mime     (optional) The list of file extension to MIME types.
     * @param string $rewrite  (optional) The name of the rewrite function.
     *
     * @return Stub The stub generator.
     *
     * @api
     */
    public function webPhar(
        $alias = null,
        $index = 'index.php',
        $notFound = null,
        array $mime = array(),
        $rewrite = null
    ) {
        $this->webPhar = array($alias, $index, $notFound, $mime, $rewrite);

        return $this;
    }
}
<?php

namespace Phine\Phar\Exception;

use Phine\Exception\Exception;

/**
 * Exception thrown for archive related errors.
 *
 * Summary
 * -------
 *
 * The `ArchiveException` class is thrown for errors inside the `Archive`
 * class. An example of this exception being used is when the data offset
 * for the archive is not valid (or could not be found).
 *
 * @author Kevin Herrera <kevin@herrera.io>
 */
class ArchiveException extends Exception
{
    /**
     * Creates a new exception if an offset is not found.
     *
     * @param string $file The archive file path.
     *
     * @return ArchiveException The new exception.
     */
    public static function offsetNotFound($file)
    {
        return new self(
            "The data offset could not be found in the PHP archive file \"$file\"."
        );
    }
}
<?php

namespace Phine\Phar\Exception;

use Phine\Exception\Exception;

/**
 * Exception thrown for signature errors.
 *
 * Summary
 * -------
 *
 * The `SignatureException` class is thrown for errors inside the `Signature`
 * class, or with one of its algorithm classes. An example of this exception
 * being thrown is if an attempt is made to verify the signature of an archive
 * that does not have a signature.
 *
 * @author Kevin Herrera <kevin@herrera.io>
 */
class SignatureException extends Exception
{
}
<?php

namespace Phine\Phar\Exception;

use Phine\Exception\Exception;

/**
 * Exception thrown for file errors.
 *
 * Summary
 * -------
 *
 * The `FileException` class is thrown when file reader errors occur. This
 * class is mostly used in the `Reader` and `Writer` classes to indicate
 * that there may be a problem using the file system.
 *
 * @author Kevin Herrera <kevin@herrera.io>
 */
class FileException extends Exception
{
}
<?php

namespace Phine\Phar\Exception;

use Phine\Exception\Exception;

/**
 * Exception thrown for build errors.
 *
 * Summary
 * -------
 *
 * The `BuilderException` class is thrown for errors relating to the `Builder`
 * class and its processes. An example of this exception being thrown is when
 * the arguments of a builder subject are being changed while an update is in
 * progress.
 *
 * @author Kevin Herrera <kevin@herrera.io>
 */
class BuilderException extends Exception
{
    /**
     * Creates an exception for an undefined method argument.
     *
     * @param string $name The name of an argument.
     *
     * @return BuilderException The new exception.
     */
    public static function argNotDefined($name)
    {
        return new self(
            "The argument \"$name\" is not defined."
        );
    }

    /**
     * Creates an exception for changes being made during an update.
     *
     * @return BuilderException The new exception.
     */
    public static function isUpdating()
    {
        return new self(
            'The subject cannot be modified during an update.'
        );
    }
}
<?php

namespace Phine\Phar;

use Phine\Exception\Exception;
use Phine\Phar\Exception\SignatureException;
use Phine\Phar\File\Reader;
use Phine\Phar\Signature\Algorithm;
use Phine\Phar\Signature\Algorithm\AlgorithmInterface;

/**
 * Reads and verifies an archive's signature.
 *
 * Summary
 * -------
 *
 * The `Signature` class uses algorithm classes to read and verify signatures
 * of archive files, without using the `phar` extension. The library includes
 * a class for each algorithm recognized by the `phar` extension: MD5, SHA1,
 * SHA256, SHA512, and OpenSSL. If you are verifying an archive signed using
 * a private key, you will need the `openssl` extension installed.
 *
 * Starting
 * --------
 *
 * To start, you will need to create a new instance of `Signature`.
 *
 *     use Phine\Phar\Signature;
 *
 *     $signature = Signature::create('example.phar');
 *
 * The above example will create a reader for the file, create a new instance
 * of the `Signature` class, and register all of the bundled algorithm classes
 * with the instance. If you know that you will only need one algorithm class
 * to verify a signature, you may manually create and register the instances
 * yourself:
 *
 *     use Phine\Phar\File\Reader;
 *     use Phine\Phar\Signature;
 *     use Phine\Phar\Signature\Algorithm\SHA1;
 *
 *     $reader = new Reader('example.phar');
 *
 *     $signature = new Signature($reader);
 *     $signature->addAlgorithm(new SHA1());
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
class Signature
{
    /**
     * The algorithm for the archive file.
     *
     * @var AlgorithmInterface
     */
    private $algorithm;

    /**
     * The collection of recognized algorithms.
     *
     * @var AlgorithmInterface[]
     */
    private $algorithms = array();

    /**
     * The archive file reader.
     *
     * @var Reader
     */
    private $reader;

    /**
     * Sets the archive file reader.
     *
     * This method will create a new instance of the class using the given
     * file reader. On its own, the instance will not be able to extract or
     * verify any signature of any archive file. You will need to register
     * one or more algorithm classes with the new instance.
     *
     *     use Phine\Phar\File\Reader;
     *     use Phine\Phar\Signature;
     *
     *     $reader = new Reader('example.phar');
     *     $signature = new Signature($reader);
     *
     * @param Reader $reader The archive file reader.
     *
     * @api
     */
    public function __construct(Reader $reader)
    {
        $this->reader = $reader;
    }

    /**
     * Adds a signature algorithm to recognize.
     *
     *     use Phine\Phar\Signature\Algorithm\SHA1;
     *
     *     $signature->addAlgorithm(new SHA1());
     *
     * @param AlgorithmInterface $algorithm An algorithm.
     *
     * @api
     */
    public function addAlgorithm(AlgorithmInterface $algorithm)
    {
        $this->algorithms[spl_object_hash($algorithm)] = $algorithm;
    }

    /**
     * Creates a new instance with default algorithms registered.
     *
     * This method will create a new file reader (or use a given one) for use
     * with a new `Signature` instance that will also be created. The bundled
     * algorithm classes will then be registered with the new instance so that
     * MD5, SHA1, and other signature types are recognized.
     *
     *     use Phine\Phar\Signature;
     *
     *     $signature = Signature::create('example.phar');
     *
     * @param Reader|string $file The archive file path or reader.
     *
     * @return Signature The new instance.
     *
     * @api
     */
    public static function create($file)
    {
        if (is_string($file)) {
            $file = new Reader($file);
        }

        $signature = new self($file);
        $signature->addAlgorithm(new Algorithm\MD5());
        $signature->addAlgorithm(new Algorithm\SHA1());
        $signature->addAlgorithm(new Algorithm\SHA256());
        $signature->addAlgorithm(new Algorithm\SHA512());

        if (extension_loaded('openssl')) {
            $signature->addAlgorithm(new Algorithm\OpenSSL());
        }

        return $signature;
    }

    /**
     * Returns the algorithm used for the archive file.
     *
     * This method will detect the algorithm used by the archive file and
     * return one of the registered algorithm classes that will be used to
     * extract and verify the signature.
     *
     *     // instance of Phine\Phar\Signature\Algorithm\SHA1
     *     $algorithm = $signature->getAlgorithm();
     *
     * > Note that only registered algorithms can be recognized by the
     * > instance. If an unrecognized algorithm is used by the archive
     * > file, an exception will be thrown.
     *
     * @return AlgorithmInterface The algorithm.
     *
     * @throws Exception
     * @throws SignatureException If the algorithm could not be found.
     *
     * @api
     */
    public function getAlgorithm()
    {
        if (null === $this->algorithm) {
            $this->reader->seek(-4, SEEK_END);

            if ('GBMB' !== $this->reader->read(4)) {
                throw SignatureException::createUsingFormat(
                    'The archive "%s" is not signed.',
                    $this->reader->getFile()
                );
            }

            $this->reader->seek(-8, SEEK_END);

            $flag = unpack('V', $this->reader->read(4));
            $flag = (int) $flag[1];

            foreach ($this->algorithms as $algorithm) {
                if ($flag === $algorithm->getFlag()) {
                    $this->algorithm = $algorithm;
                }
            }

            if (null === $this->algorithm) {
                throw SignatureException::createUsingFormat(
                    'The algorithm for the archive "%s" is not supported.',
                    $this->reader->getFile()
                );
            }
        }

        return $this->algorithm;
    }

    /**
     * Returns the signature hash stored in the archive file.
     *
     * This method will return a hex encoded string that represents the
     * signature for the archive file. This hash can be used to compare
     * against the current hash of the archive file in order to verify
     * its integrity.
     *
     *     $hash = $signature->getHash();
     *
     * The `$hash` value returned is identical to that of the one returned
     * by the `Phar::getSignature()` instance method.
     *
     * @see Phar::getSignature()
     *
     * > Note that the actual hash for the archive is not as simple as
     * > calling `sha1_file()`. You will need to know where the archive
     * > data ends and the signature begins, and then create a hash using
     * > the archive data.
     *
     * @return array The signature.
     *
     * @api
     */
    public function getHash()
    {
        return $this->getAlgorithm()->readSignature($this->reader);
    }

    /**
     * Verifies the signature of the archive file.
     *
     * This method will check if the archive's signature is valid.
     *
     *     if ($signature->isValid()) {
     *         // verified
     *     }
     *
     * @return boolean Returns `true` if verified, `false` if not.
     *
     * @api
     */
    public function isValid()
    {
        return $this->getAlgorithm()->verifySignature($this->reader);
    }
}
<?php

namespace Phine\Observer;

use ArrayAccess;
use Phine\Observer\Exception\CollectionException;

/**
 * Defines how an array accessible subject collection class must be implemented.
 *
 * Summary
 * -------
 *
 * The `ArrayCollectionInterface` is an extension of `CollectionInterface`
 * that allows for array access. Using array access provides the ability
 * to reduce the amount of boilerplate code that is used to manage subjects
 * and their observers, adding convenience.
 *
 * Starting
 * --------
 *
 * To create a new array accessible collection, you will need to create an
 * implementation of `ArrayCollectionInterface`. In this example, I will be
 * using the bundled `ArrayCollection` class.
 *
 *     use Phine\Observer\ArrayCollection;
 *
 *     $collection = new ArrayCollection();
 *
 * ### Managing Subjects
 *
 * Managing subject registrations with an array accessible collection is as
 * simple as... accessing an array! You can perform all collection actions
 * via array access. It is important to note that exceptions will still be
 * thrown for some conditions, such as accessing unregistered unique
 * identifiers.
 *
 *     // register new subjects
 *     $collection['one'] = new Subject();
 *     $collection['two'] = new Subject();
 *     $collection['three'] = new Subject();
 *
 *     // replace an existing one
 *     $collection['two'] = new Subject();
 *
 *     // unregister an existing one
 *     unset($collection['one']);
 *
 *     // use an existing one
 *     $collection['three']->notifyObservers();
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
interface ArrayCollectionInterface extends ArrayAccess, CollectionInterface
{
    /**
     * Checks if a subject is registered with this collection.
     *
     * This method will check if a subject was registered using the specified
     * unique identifier. If an identifier is registered currently registered,
     * `true` is returned.
     *
     *     if (isset($collection['my_id'])) {
     *         // registered
     *     }
     *
     * @param string $id The unique identifier of the subject.
     *
     * @return boolean Returns `true` if a subject with the given unique
     *                 identifier is registered with this collection. If
     *                 a subject is not found, `false` is returned.
     *
     * @api
     */
    public function offsetExists($id);

    /**
     * Returns the subject with the unique identifier.
     *
     * This method will return the subject that was registered with the
     * specified unique identifier. If a subject was not registered with
     * the unique identifier, an exception is thrown.
     *
     *     $subject = $collection['my_id'];
     *
     * @param string $id The unique identifier.
     *
     * @return SubjectInterface The registered subject.
     *
     * @throws CollectionException If the unique identifier is not used.
     *
     * @api
     */
    public function offsetGet($id);

    /**
     * Registers or replaces a subject with the unique identifier.
     *
     * This method will register the given identifier with the specified
     * unique identifier in this collection. If the unique identifier has
     * already been used, the registered subject will be replaced with the
     * new one provided.
     *
     *     // new
     *     $collection['my_id'] = new Subject();
     *
     *     // replace
     *     $collection['my_id'] = new Subject();
     *
     * @param string           $id      The unique identifier.
     * @param SubjectInterface $subject The subject to register.
     *
     * @api
     */
    public function offsetSet($id, $subject);

    /**
     * Unregisters a subject from the collection.
     *
     * This method will unregister a subject that was registered with the
     * specified unique identifier.
     *
     *     unset($collection['my_id']);
     *
     * @param string $id The unique identifier.
     *
     * @api
     */
    public function offsetUnset($id);
}
<?php

namespace Phine\Observer;

/**
 * Defines how an observer class must be implemented.
 *
 * Summary
 * -------
 *
 * A class implementing `ObserverInterface` will be able to receive updates
 * from any subject that implements `SubjectInterface`.
 *
 * Starting
 * --------
 *
 * To create a new observer, you will need to create an implementation of
 * `ObserverInterface`.
 *
 *     use Phine\Observer\ObserverInterface;
 *     use Phine\Observer\SubjectInterface;
 *
 *     class MyObserver implements ObserverInterface
 *     {
 *         public function receiveUpdate(SubjectInterface $subject)
 *         {
 *             // do stuff
 *         }
 *     }
 *
 * ### Interrupting the Update
 *
 * If the observer receives an update, it can interrupt the subject and prevent
 * it from updating the remaining observers. This can be accomplished by using
 * the `$subject->interruptUpdate()` method.
 *
 * @see SubjectInterface::interruptUpdate()
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
interface ObserverInterface
{
    /**
     * Receives an update from an observed subject.
     *
     * @param SubjectInterface $subject The subject being observed.
     *
     * @api
     */
    public function receiveUpdate(SubjectInterface $subject);
}
<?php

namespace Phine\Observer;

/**
 * The default implementation of `ArrayCollectionInterface`.
 *
 * Summary
 * -------
 *
 * The `ArrayCollection` class is an implementation of `ArrayCollectionInterface`.
 * You may use the implementation as an authoritative example of how the interface
 * should be implemented. You may optionally extend the class to add (not modify)
 * new functionality that you may need.
 *
 * Starting
 * --------
 *
 * To start, you will need to simply create an instance of `ArrayCollection`:
 *
 *     $collection = new ArrayCollection();
 *
 * @author Kevin Herrera <kevin@herrera.io>
 */
class ArrayCollection extends Collection implements ArrayCollectionInterface
{
    /**
     * {@inheritDoc}
     */
    public function offsetExists($id)
    {
        return $this->isSubjectRegistered($id);
    }

    /**
     * {@inheritDoc}
     */
    public function offsetGet($id)
    {
        return $this->getSubject($id);
    }

    /**
     * {@inheritDoc}
     */
    public function offsetSet($id, $subject)
    {
        if ($this->isSubjectRegistered($id)) {
            $this->replaceSubject($id, $subject);
        } else {
            $this->registerSubject($id, $subject);
        }
    }

    /**
     * {@inheritDoc}
     */
    public function offsetUnset($id)
    {
        if ($this->isSubjectRegistered($id)) {
            $this->unregisterSubject($id);
        }
    }
}
<?php

namespace Phine\Observer;

use Phine\Observer\Exception\CollectionException;

/**
 * The default implementation of `CollectionInterface`.
 *
 * Summary
 * -------
 *
 * The `Collection` class is an implementation of `CollectionInterface`. You
 * may use the implementation as an authoritative example of how the interface
 * should be implemented. You may optionally extend the class to add (not
 * modify) new functionality that you may need.
 *
 * Starting
 * --------
 *
 * To start, you will need to simply create an instance of `Collection`:
 *
 *     $collection = new Collection();
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
class Collection implements CollectionInterface
{
    /**
     * The registered subjects.
     *
     * @var SubjectInterface[]
     */
    private $subjects = array();

    /**
     * {@inheritDoc}
     */
    public function copySubjects(CollectionInterface $collection)
    {
        $this->subjects = array_merge(
            $this->subjects,
            $collection->getSubjects()
        );
    }

    /**
     * {@inheritDoc}
     */
    public function getSubject($id)
    {
        if (!isset($this->subjects[$id])) {
            throw CollectionException::idNotUsed($id);
        }

        return $this->subjects[$id];
    }

    /**
     * {@inheritDoc}
     */
    public function getSubjects()
    {
        return $this->subjects;
    }

    /**
     * {@inheritDoc}
     */
    public function isSubjectRegistered($id)
    {
        return isset($this->subjects[$id]);
    }

    /**
     * {@inheritDoc}
     */
    public function registerSubject($id, SubjectInterface $subject)
    {
        if (isset($this->subjects[$id])) {
            throw CollectionException::idUsed($id);
        }

        $this->subjects[$id] = $subject;
    }

    /**
     * {@inheritDoc}
     */
    public function replaceSubject($id, SubjectInterface $subject)
    {
        if (!isset($this->subjects[$id])) {
            throw CollectionException::idNotUsed($id);
        }

        $this->subjects[$id] = $subject;
    }

    /**
     * {@inheritDoc}
     */
    public function replaceSubjects(CollectionInterface $collection)
    {
        $this->subjects = $collection->getSubjects();
    }

    /**
     * {@inheritDoc}
     */
    public function unregisterSubject($id)
    {
        if (!isset($this->subjects[$id])) {
            throw CollectionException::idNotUsed($id);
        }

        unset($this->subjects[$id]);
    }
}
<?php

namespace Phine\Observer;

use Phine\Observer\Exception\CollectionException;

/**
 * Defines how a subject collection class must be implemented.
 *
 * Summary
 * -------
 *
 * A class implementing `CollectionInterface` will associate each subject that
 * is registered with it a unique identifier. This unique identifier can then
 * be used as a way to manage subjects without directly knowing which instance
 * should be used.
 *
 * Starting
 * --------
 *
 * To create a new collection, you will need to create an implementation of
 * `CollectionInterface`. In this example, I will be using the `Collection`,
 * a bundled implementation of the interface.
 *
 *     use Phine\Observers\Collection;
 *
 *     $collection = new Collection();
 *
 * ### Managing Subjects
 *
 * Once you have created your collection, you will want to register one or
 * more subjects. Subjects are registered by association a specific unique
 * identifier for each subject in the collection. You may register the same
 * subject with different identifiers, but you may not register multiple
 * subjects to the same identifier.
 *
 *     use Phine\Observers\Subject;
 *
 *     // create our subjects
 *     $subject1 = new Subject();
 *     $subject2 = new Subject();
 *     $subject3 = new Subject();
 *
 *     // register them with unique identifiers
 *     $collection->registerSubject('one', $subject1);
 *     $collection->registerSubject('two', $subject2);
 *     $collection->registerSubject('three', $subject3);
 *     $collection->registerSubject('four', $subject3);
 *
 *     // this attempt will thrown an exception
 *     $collection->registerSubject('three', $subject1);
 *
 * ### Replacing Subjects
 *
 * At some point, you may have a process that will swap one subject for
 * another. The collection will not allow multiple registrations for a
 * single unique identifier, but it will allow you to replace existing
 * subjects with other ones.
 *
 *     $subject4 = new Subject();
 *
 *     $collection->replaceSubject('four', $subject4);
 *
 * If you attempt to replace a subject for a unique identifier that has not
 * been used, an exception will be thrown. To prevent this from happening,
 * you will want to check the registration of a unique identifier first.
 *
 *     $subject5 = new Subject();
 *
 *     if ($collection->isSubjectRegistered('five')) {
 *         $collection->replaceSubject('five', $subject5);
 *     } else {
 *          $collection->registerSubject('five', $subject5);
 *     }
 *
 * ### Accessing Subjects
 *
 * After your subjects have been registered or replaced, you will want to
 * eventually use them.
 *
 *     $subject = $collection->getSubject('one');
 *     $subject->notifyObservers();
 *
 *     // alternatively
 *
 *     $collection->getSubject('one')->notifyObservers();
 *
 * ### Unregistering Subjects
 *
 * Unregistering a subject is as simple as registering one. However, if you
 * attempt to unregister a subject with a unique identifier that has not been
 * used, an exception is thrown. You will want to check for registration before
 * actually unregistering the subject.
 *
 *     if ($collection->isSubjectRegistered('three')) {
 *         $collection->unregisterSubject('three');
 *     }
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
interface CollectionInterface
{
    /**
     * Copies subjects from another collection.
     *
     * This method will register the subjects of another collection with this
     * collection. If the given collection has one or more subjects with the
     * same unique identifier as those already registered with this collection,
     * the subjects will be replaced with the ones being copied.
     *
     *     $collection->copySubjects($anotherCollection);
     *
     * @param CollectionInterface $collection A collection to copy from.
     *
     * @api
     */
    public function copySubjects(CollectionInterface $collection);

    /**
     * Returns the subject with the unique identifier.
     *
     * This method will return the subject that was registered with the
     * specified unique identifier. If a subject was not registered with
     * the unique identifier, an exception is thrown.
     *
     *     $subject = $collection->getSubject('my_id');
     *
     * @param string $id The unique identifier.
     *
     * @return SubjectInterface The registered subject.
     *
     * @throws CollectionException If the unique identifier is not used.
     *
     * @api
     */
    public function getSubject($id);

    /**
     * Returns a list of subjects registered to this collection.
     *
     * This method will return a list of subjects that have been registered
     * with this collection. The list is return is an array with the key being
     * the unique identifier of the subject (which is the value).
     *
     *     $subjects = $collection->getSubjects();
     *
     * @return SubjectInterface[] The list of subjects.
     *
     * @api
     */
    public function getSubjects();

    /**
     * Checks if a subject is registered with this collection.
     *
     * This method will check if a subject was registered using the specified
     * unique identifier. If an identifier is registered currently registered,
     * `true` is returned.
     *
     *     if ($collection->isSubjectRegistered('my_id')) {
     *         // registered
     *     }
     *
     * @param string $id The unique identifier of the subject.
     *
     * @return boolean Returns `true` if a subject with the given unique
     *                 identifier is registered with this collection. If
     *                 a subject is not found, `false` is returned.
     *
     * @api
     */
    public function isSubjectRegistered($id);

    /**
     * Registers a subject with a unique identifier in this collection.
     *
     * This method will register the given identifier with the specified
     * unique identifier in this collection. If the unique identifier has
     * already been used, an exception is thrown.
     *
     *     $collection->registerSubject('my_id', $subject);
     *
     * @param string           $id      The unique identifier.
     * @param SubjectInterface $subject The subject to register.
     *
     * @throws CollectionException If the unique identifier is already used.
     *
     * @api
     */
    public function registerSubject($id, SubjectInterface $subject);

    /**
     * Replaces a subject registered with a unique identifier.
     *
     * This method will replace a subject that has been registered with the
     * specified unique identifier with the given subject. If a subject has
     * not already been registered with the unique identifier, an exception
     * is thrown.
     *
     *     $subject->replaceSubject('my_id', $anotherSubject);
     *
     * @param string           $id      The unique identifier.
     * @param SubjectInterface $subject The new subject.
     *
     * @throws CollectionException If the unique identifier is not used.
     *
     * @api
     */
    public function replaceSubject($id, SubjectInterface $subject);

    /**
     * Replaces the subjects for this collection using subjects from another.
     *
     * This method will replace the subjects of this collection with the
     * subjects registered with the given collection. Any previous subjects
     * registered with this collection will be forgotten.
     *
     *     $subject->replaceSubjects($anotherCollection);
     *
     * @param CollectionInterface $collection A collection to replace with.
     *
     * @api
     */
    public function replaceSubjects(CollectionInterface $collection);

    /**
     * Unregisters a subject from the collection.
     *
     * This method will unregister a subject that was registered with the
     * specified unique identifier. If a subject has not been registered
     * with the unique identifier, an exception is thrown.
     *
     *     $subject->unregisterSubject('my_id');
     *
     * @param string $id The unique identifier.
     *
     * @throws CollectionException If the unique identifier is not used.
     *
     * @api
     */
    public function unregisterSubject($id);
}
<?php

namespace Phine\Observer\Exception;

use Phine\Exception\Exception;

/**
 * Exception thrown when a problem with the subject is encountered.
 *
 * @author Kevin Herrera <kevin@herrera.io>
 */
class SubjectException extends Exception
{
    /**
     * Creates a new exception for when a subject is already updating.
     *
     * @return SubjectException The new exception.
     */
    public static function alreadyUpdating()
    {
        return new self(
            'There is already an update in progress.'
        );
    }

    /**
     * Creates a new exception for when an interrupt is made without an update.
     *
     * @return SubjectException The new exception.
     */
    public static function notUpdating()
    {
        return new self(
            'There is no update in progress to interrupt.'
        );
    }
}
<?php

namespace Phine\Observer\Exception;

use Phine\Exception\Exception;

/**
 * Exception thrown when a problem with the collection is encountered.
 *
 * @author Kevin Herrera <kevin@herrera.io>
 */
class CollectionException extends Exception
{
    /**
     * Creates a new exception for a unique identifier that is not used.
     *
     * @param string $id The unique identifier.
     *
     * @return CollectionException The new exception.
     */
    public static function idNotUsed($id)
    {
        return self::createUsingFormat(
            'The "%s" subject unique identifier is not in use.',
            $id
        );
    }

    /**
     * Creates a new exception for a unique identifier that is already used.
     *
     * @param string $id The unique identifier.
     *
     * @return CollectionException The new exception.
     */
    public static function idUsed($id)
    {
        return self::createUsingFormat(
            'The "%s" subject unique identifier is already in use.',
            $id
        );
    }
}
<?php

namespace Phine\Observer\Exception;

use Phine\Exception\Exception;

/**
 * A throwable reason for interrupting an observer update.
 *
 * @author Kevin Herrera <kevin@herrera.io>
 */
class ReasonException extends Exception
{
    /**
     * Creates an exception for when a reason is not provided.
     *
     * @return ReasonException The new exception.
     */
    public static function notSpecified()
    {
        return new self('(no reason specified)');
    }
}
<?php

namespace Phine\Observer;

use Phine\Observer\Exception\ReasonException;
use Phine\Observer\Exception\SubjectException;

/**
 * Defines how a subject class must be implemented.
 *
 * Summary
 * -------
 *
 * A class implementing `SubjectInterface` will be the subject in the observer
 * pattern. In addition to simply being capable of having observers registered,
 * a priority can be set for each observer.
 *
 * Starting
 * --------
 *
 * To create a new subject, you will need to create an implementation of
 * `SubjectInterface`. In this example, I will be using the bundled `Subject`
 * implementation.
 *
 *     use Phine\Observer\Subject;
 *
 *     $subject = new Subject();
 *
 * Observing
 * ---------
 *
 * To observer the subject for changes, you will first need an implementation
 * of `ObserverInterface`. The implementation will be responsible for receiving
 * updates from any subject it is registered to.
 *
 *     use Phine\Observer\ObserverInterface;
 *     use Phine\Observer\SubjectInterface;
 *
 *     class MyObserver implements ObserverInterface
 *     {
 *         private $name;
 *
 *         public function __construct($name)
 *         {
 *             $this->name = $name;
 *         }
 *
 *         public function receiveUpdate(SubjectInterface $subject)
 *         {
 *             echo 'Updated: ', $this->name, "\n";
 *         }
 *     }
 *
 * Once you have your implementation, you will need to register it.
 *
 *     $observer = new MyObserver('example');
 *
 *     $subject->registerObserver($observer);
 *
 * What is not shown in the example is that the observer has been registered
 * with the priority of `SubjectInterface::FIRST_PRIORITY` (`0`, zero). This
 * means that the observer will receive an update before any observer with a
 * priority number higher than `0` (zero). You may specify the registration
 * priority number as a second argument.
 *
 *     $subject->registerObserver($observer, 123);
 *
 * The highest priority number is `SubjectInterface::LAST_PRIORITY`, which is
 * an alias for `PHP_INT_MAX`. If multiple observers have been registered with
 * the same priority number, the observers will be updated in the order they
 * have been registered.
 *
 * > It might be useful to know that a single observer instance may be
 * > registered multiple times, in the same or different priority.
 *
 * Updating
 * --------
 *
 * When a change is made to the subject, the observers should be updated.
 *
 *     $subject->notifyObservers();
 *
 * The observers will be updated in priority and registration order. Assume
 * we registered the following observers using the example implementation that
 * was shown earlier:
 *
 *     $subject->registerObserver(new MyObserver('A'), 10);
 *     $subject->registerObserver(new MyObserver('B'));
 *     $subject->registerObserver(new MyObserver('C'), Subject::LAST_PRIORITY);
 *     $subject->registerObserver(new MyObserver('D'));
 *     $subject->registerObserver(new MyObserver('E'), 20);
 *
 * If we notify the observers of an update:
 *
 *     $subject->notifyObservers();
 *
 * The output from the observers will be:
 *
 *     Updated: B
 *     Updated: D
 *     Updated: A
 *     Updated: E
 *     Updated: C
 *
 * ### Interrupting an Update
 *
 * There may be a few cases where you would need to gracefully interrupt
 * the update process in order to prevent the remaining observers from being
 * notified. The following example will demonstrate how an observer is able
 * to interrupt a subject in the middle of an update.
 *
 *     use Phine\Observer\Exception\ReasonException;
 *
 *     class InterruptingObserver implements ObserverInterface
 *     {
 *         private $badConditionMet = false;
 *
 *         public function badConditionMet()
 *         {
 *             $this->badConditionMet = true;
 *         }
 *
 *         public function receiveUpdate(SubjectInterface $subject)
 *         {
 *             if ($this->badConditionMet) {
 *                 $subject->interruptUpdate(
 *                     new ReasonException('It is an example.')
 *                 );
 *             }
 *
 *             // otherwise do work
 *         }
 *     }
 *
 * Using the new `InterruptingObserver` class with the `MyObserver` class,
 * you can see how the subject will halt an update that is in progress.
 *
 *     $observer = new InterruptingObserver();
 *     $observer->badConditionMet();
 *
 *     $subject->registerObserver(new MyObserver('A'));
 *     $subject->registerObserver($observer);
 *     $subject->registerObserver(new MyObserver('B'));
 *
 *     $subject->notifyObservers();
 *
 * When the observers are notified, you will only see the following output:
 *
 *     Updated: A
 *     PHP Fatal error:  Uncaught exception 'Phine\Observer\Exception\ReasonException' with message 'It is an example.'
 *     ...
 *
 * While passing an instance of `ReasonException` to `interruptUpdate()` is
 * not required, I strongly advise that you do provide one. Doing so will make
 * it clear to a developer why an update was interrupted, ideally eliminating
 * the need to dig through the stack trace to find more information about why
 * an interrupt was done.
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
interface SubjectInterface
{
    /**
     * The first priority for an observer.
     *
     * @api
     */
    const FIRST_PRIORITY = 0;

    /**
     * The last priority for an observer.
     *
     * @api
     */
    const LAST_PRIORITY = PHP_INT_MAX;

    /**
     * Copies observers from another subject.
     *
     * This method will register the observers of another subject with this
     * subject, maintain their priority and the order they were registered in.
     * Note, however, that they will be called after any observers that have
     * already been registered with this subject.
     *
     *     // $subject has a copy of the observers from $anotherSubject
     *     $subject->copyObservers($anotherSubject);
     *
     * @param SubjectInterface $subject A subject to copy from.
     *
     * @api
     */
    public function copyObservers(SubjectInterface $subject);

    /**
     * Returns the reason the last update was interrupted.
     *
     * This method will return the reason the last update this subject made
     * was interrupted. Note that if there has yet to be an update, or if the
     * last update was not interrupted, nothing is returned.
     *
     *     $reason = $subject->getInterruptReason();
     *
     * @return ReasonException If the previous update was interrupted, the
     *                         exception representing the reason is returned.
     *                         If no interrupt had occurred, nothing (`null`)
     *                         is returned.
     *
     * @api
     */
    public function getInterruptReason();

    /**
     * Returns the observers registered to this subject.
     *
     * This method will return a list of observers in the order they would
     * be updated by the subject. The list is an array of arrays, where the
     * key of the outer array is the priority number, and the inner array
     * for each priority contains the list of observers in the order they
     * have been registered.
     *
     *     $observers = $subject->getObservers();
     *
     * The returned list would look something like the following:
     *
     *     $observers = array(
     *         0 => array(
     *             $observer1,
     *             $observer2,
     *         ),
     *         123 => array(
     *             $observer3
     *         ),
     *         456 => array(
     *             $observer4
     *         ),
     *     );
     *
     * @return array The list of observers and their priorities.
     *
     * @api
     */
    public function getObservers();

    /**
     * Checks if a specific observer is registered with this subject.
     *
     * This method will check if the given observer is registered with this
     * subject. If a `$priority` is specified, this method will only check
     * if the given observer was registered with the specified priority.
     *
     *     $subject->registerObserver($observer, 123);
     *
     *     if ($subject->hasObserver($observer)) {
     *         // registered
     *     }
     *
     *     if ($subject->hasObserver($observer, 123)) {
     *         // registered with priority 123
     *     }
     *
     *     if (!$subject->hasObserver($observer, 456)) {
     *         // not registered with priority 456
     *     }
     *
     * @param ObserverInterface $observer The observer to check for.
     * @param integer           $priority The priority to limit the check to.
     *
     * @return boolean If the observer is registered, `true` is returned. If
     *                 the observer is not registered, `false` is returned.
     *
     * @api
     */
    public function hasObserver(ObserverInterface $observer, $priority = null);

    /**
     * Checks if this subject has any observers registered.
     *
     * This method will check to see if this subject has any observers
     * registered, regardless of priority. If a `$priority` is specified, this
     * method will only check to see if any observer has been registered with
     * the specified priority.
     *
     *     $subject->registerObserver($observer, 123);
     *
     *     if ($subject->hasObservers()) {
     *         // registered
     *     }
     *
     *     if (!$subject->hasObserver(456)) {
     *        // none registered with priority 456
     *     }
     *
     * @param integer $priority The priority to limit the check to.
     *
     * @return boolean If there are one or more observer registered, `true`
     *                 is returned. If there are no observers registered,
     *                 `false` is returned.
     *
     * @api
     */
    public function hasObservers($priority = null);

    /**
     * Interrupts the observer update process.
     *
     * This method will interrupt an update that is currently in progress.
     * If a `$reason` is not provided, a default one will be created. If an
     * update is currently not in progress, an exception will be thrown.
     *
     *     class MyObserver implements ObserverInterface
     *     {
     *         public function receiveUpdate(SubjectInterface $subject)
     *         {
     *             $subject->interruptUpdate(new ReasonException('My reason.'));
     *         }
     *     }
     *
     * @param ReasonException $reason A reason for the interruption.
     *
     * @throws SubjectException If an update is not in progress.
     *
     * @api
     */
    public function interruptUpdate(ReasonException $reason = null);

    /**
     * Checks if the last update was interrupted.
     *
     * This method will check to see if the last update was interrupted.
     *
     *     if ($subject->isInterrupted()) {
     *         // it was interrupted
     *     }
     *
     * @return boolean If the last update was interrupted, `true` is returned.
     *                 If the last update was not interrupted, `false` is
     *                 returned.
     *
     * @api
     */
    public function isInterrupted();

    /**
     * Checks if the subject is in the process of updating its observers.
     *
     * This method will check if the subject is in the process of updating
     * its registered observers.
     *
     *     if ($subject->isUpdating()) {
     *         // currently updating
     *     }
     *
     * @return boolean If the subject is currently updating its observers,
     *                 `true` is returned. If the subject is not currently
     *                 updating its observers, `false` is returned.
     *
     * @api
     */
    public function isUpdating();

    /**
     * Notifies all observers of an update from this subject.
     *
     * This method will update all observers that have been registered with
     * this subject. The observers will first be updated in the order they
     * have been prioritized, from `SubjectInterface::FIRST_PRIORITY` (zero)
     * to `SubjectInterface::LAST_PRIORITY` (`PHP_INT_MAX`). If the update
     * is interrupted by an observer, an exception will be thrown.
     *
     * If an update is already in progress, an exception will be thrown.
     *
     *     try {
     *         $subject->notifyObservers();
     *     } catch (ReasonException $exception) {
     *         // the update was interrupted
     *     } catch (SubjectException $exception) {
     *         // already updating observers
     *     }
     *
     *     if (!$subject->isInterrupted()) {
     *         // only do something if not interrupted
     *     }
     *
     * @return mixed While not required, a subject may return a value once
     *               all of the observers have been notified. If no value is
     *               available, `null` is always returned.
     *
     * @throws ReasonException  If the update is interrupted.
     * @throws SubjectException If the subject is already updating.
     *
     * @api
     */
    public function notifyObservers();

    /**
     * Registers an observer with this subject.
     *
     * This method will register a single occurrence of the given `$observer`
     * with this subject. Multiple registrations of the same observer may be
     * done. By default, the `SubjectInterface::FIRST_PRIORITY` priority is
     * used for the registration.
     *
     *     $subject->registerObserver($observer, 123);
     *     $subject->registerObserver($observer, 456);
     *     $subject->registerObserver($observer, 789);
     *
     * The priority may be anywhere from `0` (zero) to `PHP_INT_MAX`. Observers
     * are updated beginning with `0` and ending with `PHP_INT_MAX`. Multiple
     * observers, even the same observer, may be registered using the same
     * priority.
     *
     * For convenience, the following constants are made available:
     *
     * - `SubjectInterface::FIRST_PRIORITY` &mdash; Priority `0` (zero).
     * - `SubjectInterface::LAST_PRIORITY` &mdash; Priority `PHP_INT_MAX`.
     *
     * @param ObserverInterface $observer The observer to register.
     * @param integer           $priority The priority of the observer.
     *
     * @api
     */
    public function registerObserver(
        ObserverInterface $observer,
        $priority = self::FIRST_PRIORITY
    );

    /**
     * Replaces the observers for this subject using observers from another.
     *
     * This method will replace the observers of this subject with the
     * observers registered with the given subject, preserving priority and
     * registration order. Any previous observers registered with this subject
     * will be forgotten.
     *
     *     // $subject will have the observers of $anotherSubject
     *     $subject->replaceObservers($anotherSubject);
     *
     * @param SubjectInterface $subject A subject to replace with.
     *
     * @api
     */
    public function replaceObservers(SubjectInterface $subject);

    /**
     * Unregisters some or all observers from this subject.
     *
     * This method will unregister some or all observers and each occurrence
     * of their registration, depending on the parameters that have been
     * provided.
     *
     * - By default, unregisters all occurrences of all observers of all
     *   priorities.
     * - If an `$observer` is provided, unregisters all occurrences of only
     *   the given observer of all priorities.
     * - If a `$priority` is specified, unregisters all occurrences of all
     *   observers only with the specified priority.
     * - If both `$observer` and `$priority` is specified, unregisters all
     *   occurrences of the given observer with the specified priority.
     *
     *     // all gone
     *     $subject->unregisterAllObservers();
     *
     *     // all $observer gone
     *     $subject->unregisterAllObservers($observer);
     *
     *     // all with 123 priority gone
     *     $subject->unregisterAllObservers(null, 123);
     *
     *     // all $observer with priority 123 gone
     *     $subject->unregisterAllObservers($observer, 123);
     *
     * @param ObserverInterface $observer The observer to unregister.
     * @param integer           $priority The priority to limit to.
     *
     * @api
     */
    public function unregisterAllObservers(
        ObserverInterface $observer = null,
        $priority = null
    );

    /**
     * Unregisters an observer from this subject.
     *
     * This method will unregister all occurrences of this observer from this
     * subject. If a `$priority` is specified all occurrences will be removed
     * only with the specified priority.
     *
     *     // all gone
     *     $subject->unregisterObserver($observer);
     *
     *     // all with 123 priority gone
     *     $subject->unregisterObserver($observer, 123);
     *
     * @param ObserverInterface $observer The observer to unregister.
     * @param integer           $priority The priority to limit to.
     *
     * @api
     */
    public function unregisterObserver(
        ObserverInterface $observer,
        $priority = null
    );
}
<?php

namespace Phine\Observer;

use Exception;
use Phine\Observer\Exception\ReasonException;
use Phine\Observer\Exception\SubjectException;

/**
 * The default implementation of `SubjectInterface`.
 *
 * Summary
 * -------
 *
 * The `Subject` class is an implementation of `SubjectInterface`. You may use
 * the implementation as an authoritative example of how the interface should
 * be implemented. You may optionally extend the class to add (not modify) new
 * functionality that you may need.
 *
 * Starting
 * --------
 *
 * To start, you will need to simply create an instance of `Subject`:
 *
 *     use Phine\Observer\Subject;
 *
 *     $subject = new Subject();
 *
 * @author Kevin Herrera <kevin@herrera.io>
 *
 * @api
 */
class Subject implements SubjectInterface
{
    /**
     * The registered observers.
     *
     * @var array
     */
    private $observers = array();

    /**
     * The reason for the last interrupt.
     *
     * @var ReasonException
     */
    private $reason;

    /**
     * The flag used to determine if an update is in progress.
     *
     * @var boolean
     */
    private $updating = false;

    /**
     * {@inheritDoc}
     */
    public function copyObservers(SubjectInterface $subject)
    {
        foreach ($subject->getObservers() as $priority => $observers) {
            if (isset($this->observers[$priority])) {
                $this->observers[$priority] = array_merge(
                    $this->observers[$priority],
                    $observers
                );
            } else {
                $this->observers[$priority] = $observers;
            }
        }
    }

    /**
     * {@inheritDoc}
     */
    public function getInterruptReason()
    {
        return $this->reason;
    }

    /**
     * {@inheritDoc}
     */
    public function getObservers()
    {
        ksort($this->observers, SORT_NUMERIC);

        return $this->observers;
    }

    /**
     * {@inheritDoc}
     */
    public function hasObserver(ObserverInterface $observer, $priority = null)
    {
        if (null === $priority) {
            foreach ($this->observers as $observers) {
                if (in_array($observer, $observers, true)) {
                    return true;
                }
            }
        } elseif (isset($this->observers[$priority])) {
            return in_array($observer, $this->observers[$priority], true);
        }

        return false;
    }

    /**
     * {@inheritDocs}
     */
    public function hasObservers($priority = null)
    {
        if (null === $priority) {
            foreach ($this->observers as $observers) {
                if (!empty($observers)) {
                    return true;
                }
            }
        } elseif (isset($this->observers[$priority])) {
            return !empty($this->observers[$priority]);
        }

        return false;
    }

    /**
     * {@inheritDoc}
     */
    public function interruptUpdate(ReasonException $reason = null)
    {
        if (false === $this->updating) {
            throw SubjectException::notUpdating();
        }

        if (null === $reason) {
            $reason = ReasonException::notSpecified();
        }

        $this->reason = $reason;
        $this->updating = false;
    }

    /**
     * {@inheritDoc}
     */
    public function isInterrupted()
    {
        return (null !== $this->reason);
    }

    /**
     * {@inheritDoc}
     */
    public function isUpdating()
    {
        return $this->updating;
    }

    /**
     * {@inheritDoc}
     */
    public function notifyObservers()
    {
        if ($this->updating) {
            throw SubjectException::alreadyUpdating();
        }

        $this->resetInterrupt();

        $this->updating = true;

        /** @var ObserverInterface $observer */
        foreach ($this->getObservers() as $observers) {
            foreach ($observers as $observer) {
                try {
                $observer->receiveUpdate($this);
                } catch (Exception $exception) {
                    $this->updating = false;

                    throw $exception;
                }

                if ($this->reason) {
                    $this->updating = false;

                    throw $this->reason;
                }
            }
        }

        $this->updating = false;
    }

    /**
     * {@inheritDoc}
     */
    public function registerObserver(
        ObserverInterface $observer,
        $priority = self::FIRST_PRIORITY
    ) {
        if (!isset($this->observers[$priority])) {
            $this->observers[$priority] = array();
        }

        $this->observers[$priority][] = $observer;
    }

    /**
     * {@inheritDoc}
     */
    public function replaceObservers(SubjectInterface $subject)
    {
        $this->observers = $subject->getObservers();
    }

    /**
     * {@inheritDoc}
     */
    public function unregisterAllObservers(
        ObserverInterface $observer = null,
        $priority = null
    ) {
        if ($observer) {
            if (null === $priority) {
                foreach ($this->observers as $priority => $observers) {
                    foreach (array_keys($observers, $observer, true) as $key) {
                        unset($this->observers[$priority][$key]);
                    }
                }
            } elseif (isset($this->observers[$priority])) {
                foreach (array_keys($this->observers[$priority], $observer, true) as $key) {
                    unset($this->observers[$priority][$key]);
                }
            }
        } elseif (null === $priority) {
            $this->observers = array();
        } else {
            unset($this->observers[$priority]);
        }
    }

    /**
     * {@inheritDoc}
     */
    public function unregisterObserver(
        ObserverInterface $observer,
        $priority = null
    ) {
        if (null === $priority) {
            foreach ($this->getObservers() as $priority => $observers) {
                if (false !== ($key = array_search($observer, $observers, true))) {
                    unset($this->observers[$priority][$key]);

                    break;
                }
            }
        } elseif (isset($this->observers[$priority])) {
            if (false !== ($key = array_search($observer, $this->observers[$priority], true))) {
                unset($this->observers[$priority][$key]);
            }
        }
    }

    /**
     * Resets any interruption made by the last update.
     */
    protected function resetInterrupt()
    {
        $this->reason = null;
    }
}
<?php

namespace Phine\Exception;

/**
 * Builds on the `Exception` class to add more features.
 *
 * @author Kevin Herrera <kevin@herrera.io>
 */
class Exception extends \Exception
{
    /**
     * Creates a new exception using a formatted message.
     *
     * A new exception is created after formatting the given arguments using
     * `vsprintf()`. If the last argument is an instance of the `Exception`
     * class, it will be used as the `$previous` exception in the new one
     * that is created.
     *
     * @param string     $format    The message format.
     * @param mixed      $value,... A value to format.
     * @param \Exception $previous  A previous exception.
     *
     * @return Exception The new exception.
     */
    public static function createUsingFormat($format)
    {
        $previous = null;

        if (1 < func_num_args()) {
            $args = array_slice(func_get_args(), 1);

            // extract $previous exception
            if (end($args) instanceof \Exception) {
                $previous = array_pop($args);
            }

            if ($args) {
                $format = vsprintf($format, $args);
            }
        }

        return new static($format, 0, $previous);
    }

    /**
     * Uses the last error message to create a new exception.
     *
     * A new exception will be created using the last error message, which is
     * returned by the `error_get_last()` function. If no error message was
     * generated, the `$default` message will be used. By default, that message
     * is "(unknown error)".
     *
     * The message `$prefix` will be added to any message that is used. The
     * prefix "My prefix: " with the error message "my error" will result in
     * "My prefix: error message" being used as the exception message.
     *
     * @param string $prefix  The message prefix.
     * @param string $default The default message.
     *
     * @return Exception The new exception.
     */
    public static function createUsingLastError (
        $prefix = null,
        $default = '(unknown error)'
    ) {
        if (null === ($error = error_get_last())) {
            $error = array('message' => $default);
        }

        return new static($prefix . $error['message']);
    }
}
<?php

$dir = file_exists('../parsedown/')
    ? '../parsedown/' # child
    : 'vendor/erusev/parsedown/'; # parent

include $dir . 'Parsedown.php';
include $dir . 'test/ParsedownTest.php';

include 'ParsedownExtra.php';<?php

class ParsedownExtraTest extends ParsedownTest
{
    protected function initDirs()
    {
        $dirs = parent::initDirs();

        $dirs []= dirname(__FILE__).'/data/';

        return $dirs;
    }

    protected function initParsedown()
    {
        $Parsedown = new ParsedownExtra();

        return $Parsedown;
    }
}
<?php

#
#
# Parsedown Extra
# https://github.com/erusev/parsedown-extra
#
# (c) Emanuil Rusev
# http://erusev.com
#
# For the full license information, view the LICENSE file that was distributed
# with this source code.
#
#

class ParsedownExtra extends Parsedown
{
    # ~

    const version = '0.7.0';

    # ~

    function __construct()
    {
        if (parent::version < '1.5.0')
        {
            throw new Exception('ParsedownExtra requires a later version of Parsedown');
        }

        $this->BlockTypes[':'] []= 'DefinitionList';
        $this->BlockTypes['*'] []= 'Abbreviation';

        # identify footnote definitions before reference definitions
        array_unshift($this->BlockTypes['['], 'Footnote');

        # identify footnote markers before before links
        array_unshift($this->InlineTypes['['], 'FootnoteMarker');
    }

    #
    # ~

    function text($text)
    {
        $markup = parent::text($text);

        # merge consecutive dl elements

        $markup = preg_replace('/<\/dl>\s+<dl>\s+/', '', $markup);

        # add footnotes

        if (isset($this->DefinitionData['Footnote']))
        {
            $Element = $this->buildFootnoteElement();

            $markup .= "\n" . $this->element($Element);
        }

        return $markup;
    }

    #
    # Blocks
    #

    #
    # Abbreviation

    protected function blockAbbreviation($Line)
    {
        if (preg_match('/^\*\[(.+?)\]:[ ]*(.+?)[ ]*$/', $Line['text'], $matches))
        {
            $this->DefinitionData['Abbreviation'][$matches[1]] = $matches[2];

            $Block = array(
                'hidden' => true,
            );

            return $Block;
        }
    }

    #
    # Footnote

    protected function blockFootnote($Line)
    {
        if (preg_match('/^\[\^(.+?)\]:[ ]?(.*)$/', $Line['text'], $matches))
        {
            $Block = array(
                'label' => $matches[1],
                'text' => $matches[2],
                'hidden' => true,
            );

            return $Block;
        }
    }

    protected function blockFootnoteContinue($Line, $Block)
    {
        if ($Line['text'][0] === '[' and preg_match('/^\[\^(.+?)\]:/', $Line['text']))
        {
            return;
        }

        if (isset($Block['interrupted']))
        {
            if ($Line['indent'] >= 4)
            {
                $Block['text'] .= "\n\n" . $Line['text'];

                return $Block;
            }
        }
        else
        {
            $Block['text'] .= "\n" . $Line['text'];

            return $Block;
        }
    }

    protected function blockFootnoteComplete($Block)
    {
        $this->DefinitionData['Footnote'][$Block['label']] = array(
            'text' => $Block['text'],
            'count' => null,
            'number' => null,
        );

        return $Block;
    }

    #
    # Definition List

    protected function blockDefinitionList($Line, $Block)
    {
        if ( ! isset($Block) or isset($Block['type']))
        {
            return;
        }

        $Element = array(
            'name' => 'dl',
            'handler' => 'elements',
            'text' => array(),
        );

        $terms = explode("\n", $Block['element']['text']);

        foreach ($terms as $term)
        {
            $Element['text'] []= array(
                'name' => 'dt',
                'handler' => 'line',
                'text' => $term,
            );
        }

        $Block['element'] = $Element;

        $Block = $this->addDdElement($Line, $Block);

        return $Block;
    }

    protected function blockDefinitionListContinue($Line, array $Block)
    {
        if ($Line['text'][0] === ':')
        {
            $Block = $this->addDdElement($Line, $Block);

            return $Block;
        }
        else
        {
            if (isset($Block['interrupted']) and $Line['indent'] === 0)
            {
                return;
            }

            if (isset($Block['interrupted']))
            {
                $Block['dd']['handler'] = 'text';
                $Block['dd']['text'] .= "\n\n";

                unset($Block['interrupted']);
            }

            $text = substr($Line['body'], min($Line['indent'], 4));

            $Block['dd']['text'] .= "\n" . $text;

            return $Block;
        }
    }

    #
    # Header

    protected function blockHeader($Line)
    {
        $Block = parent::blockHeader($Line);

        if (preg_match('/[ #]*{('.$this->regexAttribute.'+)}[ ]*$/', $Block['element']['text'], $matches, PREG_OFFSET_CAPTURE))
        {
            $attributeString = $matches[1][0];

            $Block['element']['attributes'] = $this->parseAttributeData($attributeString);

            $Block['element']['text'] = substr($Block['element']['text'], 0, $matches[0][1]);
        }

        return $Block;
    }

    #
    # Markup

    protected function blockMarkupComplete($Block)
    {
        if ( ! isset($Block['void']))
        {
            $Block['markup'] = $this->processTag($Block['markup']);
        }

        return $Block;
    }

    #
    # Setext

    protected function blockSetextHeader($Line, array $Block = null)
    {
        $Block = parent::blockSetextHeader($Line, $Block);

        if (preg_match('/[ ]*{('.$this->regexAttribute.'+)}[ ]*$/', $Block['element']['text'], $matches, PREG_OFFSET_CAPTURE))
        {
            $attributeString = $matches[1][0];

            $Block['element']['attributes'] = $this->parseAttributeData($attributeString);

            $Block['element']['text'] = substr($Block['element']['text'], 0, $matches[0][1]);
        }

        return $Block;
    }

    #
    # Inline Elements
    #

    #
    # Footnote Marker

    protected function inlineFootnoteMarker($Excerpt)
    {
        if (preg_match('/^\[\^(.+?)\]/', $Excerpt['text'], $matches))
        {
            $name = $matches[1];

            if ( ! isset($this->DefinitionData['Footnote'][$name]))
            {
                return;
            }

            $this->DefinitionData['Footnote'][$name]['count'] ++;

            if ( ! isset($this->DefinitionData['Footnote'][$name]['number']))
            {
                $this->DefinitionData['Footnote'][$name]['number'] = ++ $this->footnoteCount; # Â» &
            }

            $Element = array(
                'name' => 'sup',
                'attributes' => array('id' => 'fnref'.$this->DefinitionData['Footnote'][$name]['count'].':'.$name),
                'handler' => 'element',
                'text' => array(
                    'name' => 'a',
                    'attributes' => array('href' => '#fn:'.$name, 'class' => 'footnote-ref'),
                    'text' => $this->DefinitionData['Footnote'][$name]['number'],
                ),
            );

            return array(
                'extent' => strlen($matches[0]),
                'element' => $Element,
            );
        }
    }

    private $footnoteCount = 0;

    #
    # Link

    protected function inlineLink($Excerpt)
    {
        $Link = parent::inlineLink($Excerpt);

        $remainder = substr($Excerpt['text'], $Link['extent']);

        if (preg_match('/^[ ]*{('.$this->regexAttribute.'+)}/', $remainder, $matches))
        {
            $Link['element']['attributes'] += $this->parseAttributeData($matches[1]);

            $Link['extent'] += strlen($matches[0]);
        }

        return $Link;
    }

    #
    # ~
    #

    protected function unmarkedText($text)
    {
        $text = parent::unmarkedText($text);

        if (isset($this->DefinitionData['Abbreviation']))
        {
            foreach ($this->DefinitionData['Abbreviation'] as $abbreviation => $meaning)
            {
                $pattern = '/\b'.preg_quote($abbreviation, '/').'\b/';

                $text = preg_replace($pattern, '<abbr title="'.$meaning.'">'.$abbreviation.'</abbr>', $text);
            }
        }

        return $text;
    }

    #
    # Util Methods
    #

    protected function addDdElement(array $Line, array $Block)
    {
        $text = substr($Line['text'], 1);
        $text = trim($text);

        unset($Block['dd']);

        $Block['dd'] = array(
            'name' => 'dd',
            'handler' => 'line',
            'text' => $text,
        );

        if (isset($Block['interrupted']))
        {
            $Block['dd']['handler'] = 'text';

            unset($Block['interrupted']);
        }

        $Block['element']['text'] []= & $Block['dd'];

        return $Block;
    }

    protected function buildFootnoteElement()
    {
        $Element = array(
            'name' => 'div',
            'attributes' => array('class' => 'footnotes'),
            'handler' => 'elements',
            'text' => array(
                array(
                    'name' => 'hr',
                ),
                array(
                    'name' => 'ol',
                    'handler' => 'elements',
                    'text' => array(),
                ),
            ),
        );

        uasort($this->DefinitionData['Footnote'], 'self::sortFootnotes');

        foreach ($this->DefinitionData['Footnote'] as $definitionId => $DefinitionData)
        {
            if ( ! isset($DefinitionData['number']))
            {
                continue;
            }

            $text = $DefinitionData['text'];

            $text = parent::text($text);

            $numbers = range(1, $DefinitionData['count']);

            $backLinksMarkup = '';

            foreach ($numbers as $number)
            {
                $backLinksMarkup .= ' <a href="#fnref'.$number.':'.$definitionId.'" rev="footnote" class="footnote-backref">&#8617;</a>';
            }

            $backLinksMarkup = substr($backLinksMarkup, 1);

            if (substr($text, - 4) === '</p>')
            {
                $backLinksMarkup = '&#160;'.$backLinksMarkup;

                $text = substr_replace($text, $backLinksMarkup.'</p>', - 4);
            }
            else
            {
                $text .= "\n".'<p>'.$backLinksMarkup.'</p>';
            }

            $Element['text'][1]['text'] []= array(
                'name' => 'li',
                'attributes' => array('id' => 'fn:'.$definitionId),
                'text' => "\n".$text."\n",
            );
        }

        return $Element;
    }

    # ~

    protected function parseAttributeData($attributeString)
    {
        $Data = array();

        $attributes = preg_split('/[ ]+/', $attributeString, - 1, PREG_SPLIT_NO_EMPTY);

        foreach ($attributes as $attribute)
        {
            if ($attribute[0] === '#')
            {
                $Data['id'] = substr($attribute, 1);
            }
            else # "."
            {
                $classes []= substr($attribute, 1);
            }
        }

        if (isset($classes))
        {
            $Data['class'] = implode(' ', $classes);
        }

        return $Data;
    }

    # ~

    protected function processTag($elementMarkup) # recursive
    {
        # http://stackoverflow.com/q/1148928/200145
        libxml_use_internal_errors(true);

        $DOMDocument = new DOMDocument;

        # http://stackoverflow.com/q/11309194/200145
        $elementMarkup = mb_convert_encoding($elementMarkup, 'HTML-ENTITIES', 'UTF-8');

        # http://stackoverflow.com/q/4879946/200145
        $DOMDocument->loadHTML($elementMarkup);
        $DOMDocument->removeChild($DOMDocument->doctype);
        $DOMDocument->replaceChild($DOMDocument->firstChild->firstChild->firstChild, $DOMDocument->firstChild);

        $elementText = '';

        if ($DOMDocument->documentElement->getAttribute('markdown') === '1')
        {
            foreach ($DOMDocument->documentElement->childNodes as $Node)
            {
                $elementText .= $DOMDocument->saveHTML($Node);
            }

            $DOMDocument->documentElement->removeAttribute('markdown');

            $elementText = "\n".$this->text($elementText)."\n";
        }
        else
        {
            foreach ($DOMDocument->documentElement->childNodes as $Node)
            {
                $nodeMarkup = $DOMDocument->saveHTML($Node);

                if ($Node instanceof DOMElement and ! in_array($Node->nodeName, $this->textLevelElements))
                {
                    $elementText .= $this->processTag($nodeMarkup);
                }
                else
                {
                    $elementText .= $nodeMarkup;
                }
            }
        }

        # because we don't want for markup to get encoded
        $DOMDocument->documentElement->nodeValue = 'placeholder\x1A';

        $markup = $DOMDocument->saveHTML($DOMDocument->documentElement);
        $markup = str_replace('placeholder\x1A', $elementText, $markup);

        return $markup;
    }

    # ~

    protected function sortFootnotes($A, $B) # callback
    {
        return $A['number'] - $B['number'];
    }

    #
    # Fields
    #

    protected $regexAttribute = '(?:[#.][-\w]+[ ]*)';
}
<?php

#
#
# Parsedown
# http://parsedown.org
#
# (c) Emanuil Rusev
# http://erusev.com
#
# For the full license information, view the LICENSE file that was distributed
# with this source code.
#
#

class Parsedown
{
    # ~

    const version = '1.6.0';

    # ~

    function text($text)
    {
        # make sure no definitions are set
        $this->DefinitionData = array();

        # standardize line breaks
        $text = str_replace(array("\r\n", "\r"), "\n", $text);

        # remove surrounding line breaks
        $text = trim($text, "\n");

        # split text into lines
        $lines = explode("\n", $text);

        # iterate through lines to identify blocks
        $markup = $this->lines($lines);

        # trim line breaks
        $markup = trim($markup, "\n");

        return $markup;
    }

    #
    # Setters
    #

    function setBreaksEnabled($breaksEnabled)
    {
        $this->breaksEnabled = $breaksEnabled;

        return $this;
    }

    protected $breaksEnabled;

    function setMarkupEscaped($markupEscaped)
    {
        $this->markupEscaped = $markupEscaped;

        return $this;
    }

    protected $markupEscaped;

    function setUrlsLinked($urlsLinked)
    {
        $this->urlsLinked = $urlsLinked;

        return $this;
    }

    protected $urlsLinked = true;

    #
    # Lines
    #

    protected $BlockTypes = array(
        '#' => array('Header'),
        '*' => array('Rule', 'List'),
        '+' => array('List'),
        '-' => array('SetextHeader', 'Table', 'Rule', 'List'),
        '0' => array('List'),
        '1' => array('List'),
        '2' => array('List'),
        '3' => array('List'),
        '4' => array('List'),
        '5' => array('List'),
        '6' => array('List'),
        '7' => array('List'),
        '8' => array('List'),
        '9' => array('List'),
        ':' => array('Table'),
        '<' => array('Comment', 'Markup'),
        '=' => array('SetextHeader'),
        '>' => array('Quote'),
        '[' => array('Reference'),
        '_' => array('Rule'),
        '`' => array('FencedCode'),
        '|' => array('Table'),
        '~' => array('FencedCode'),
    );

    # ~

    protected $unmarkedBlockTypes = array(
        'Code',
    );

    #
    # Blocks
    #

    protected function lines(array $lines)
    {
        $CurrentBlock = null;

        foreach ($lines as $line)
        {
            if (chop($line) === '')
            {
                if (isset($CurrentBlock))
                {
                    $CurrentBlock['interrupted'] = true;
                }

                continue;
            }

            if (strpos($line, "\t") !== false)
            {
                $parts = explode("\t", $line);

                $line = $parts[0];

                unset($parts[0]);

                foreach ($parts as $part)
                {
                    $shortage = 4 - mb_strlen($line, 'utf-8') % 4;

                    $line .= str_repeat(' ', $shortage);
                    $line .= $part;
                }
            }

            $indent = 0;

            while (isset($line[$indent]) and $line[$indent] === ' ')
            {
                $indent ++;
            }

            $text = $indent > 0 ? substr($line, $indent) : $line;

            # ~

            $Line = array('body' => $line, 'indent' => $indent, 'text' => $text);

            # ~

            if (isset($CurrentBlock['continuable']))
            {
                $Block = $this->{'block'.$CurrentBlock['type'].'Continue'}($Line, $CurrentBlock);

                if (isset($Block))
                {
                    $CurrentBlock = $Block;

                    continue;
                }
                else
                {
                    if ($this->isBlockCompletable($CurrentBlock['type']))
                    {
                        $CurrentBlock = $this->{'block'.$CurrentBlock['type'].'Complete'}($CurrentBlock);
                    }
                }
            }

            # ~

            $marker = $text[0];

            # ~

            $blockTypes = $this->unmarkedBlockTypes;

            if (isset($this->BlockTypes[$marker]))
            {
                foreach ($this->BlockTypes[$marker] as $blockType)
                {
                    $blockTypes []= $blockType;
                }
            }

            #
            # ~

            foreach ($blockTypes as $blockType)
            {
                $Block = $this->{'block'.$blockType}($Line, $CurrentBlock);

                if (isset($Block))
                {
                    $Block['type'] = $blockType;

                    if ( ! isset($Block['identified']))
                    {
                        $Blocks []= $CurrentBlock;

                        $Block['identified'] = true;
                    }

                    if ($this->isBlockContinuable($blockType))
                    {
                        $Block['continuable'] = true;
                    }

                    $CurrentBlock = $Block;

                    continue 2;
                }
            }

            # ~

            if (isset($CurrentBlock) and ! isset($CurrentBlock['type']) and ! isset($CurrentBlock['interrupted']))
            {
                $CurrentBlock['element']['text'] .= "\n".$text;
            }
            else
            {
                $Blocks []= $CurrentBlock;

                $CurrentBlock = $this->paragraph($Line);

                $CurrentBlock['identified'] = true;
            }
        }

        # ~

        if (isset($CurrentBlock['continuable']) and $this->isBlockCompletable($CurrentBlock['type']))
        {
            $CurrentBlock = $this->{'block'.$CurrentBlock['type'].'Complete'}($CurrentBlock);
        }

        # ~

        $Blocks []= $CurrentBlock;

        unset($Blocks[0]);

        # ~

        $markup = '';

        foreach ($Blocks as $Block)
        {
            if (isset($Block['hidden']))
            {
                continue;
            }

            $markup .= "\n";
            $markup .= isset($Block['markup']) ? $Block['markup'] : $this->element($Block['element']);
        }

        $markup .= "\n";

        # ~

        return $markup;
    }

    protected function isBlockContinuable($Type)
    {
        return method_exists($this, 'block'.$Type.'Continue');
    }

    protected function isBlockCompletable($Type)
    {
        return method_exists($this, 'block'.$Type.'Complete');
    }

    #
    # Code

    protected function blockCode($Line, $Block = null)
    {
        if (isset($Block) and ! isset($Block['type']) and ! isset($Block['interrupted']))
        {
            return;
        }

        if ($Line['indent'] >= 4)
        {
            $text = substr($Line['body'], 4);

            $Block = array(
                'element' => array(
                    'name' => 'pre',
                    'handler' => 'element',
                    'text' => array(
                        'name' => 'code',
                        'text' => $text,
                    ),
                ),
            );

            return $Block;
        }
    }

    protected function blockCodeContinue($Line, $Block)
    {
        if ($Line['indent'] >= 4)
        {
            if (isset($Block['interrupted']))
            {
                $Block['element']['text']['text'] .= "\n";

                unset($Block['interrupted']);
            }

            $Block['element']['text']['text'] .= "\n";

            $text = substr($Line['body'], 4);

            $Block['element']['text']['text'] .= $text;

            return $Block;
        }
    }

    protected function blockCodeComplete($Block)
    {
        $text = $Block['element']['text']['text'];

        $text = htmlspecialchars($text, ENT_NOQUOTES, 'UTF-8');

        $Block['element']['text']['text'] = $text;

        return $Block;
    }

    #
    # Comment

    protected function blockComment($Line)
    {
        if ($this->markupEscaped)
        {
            return;
        }

        if (isset($Line['text'][3]) and $Line['text'][3] === '-' and $Line['text'][2] === '-' and $Line['text'][1] === '!')
        {
            $Block = array(
                'markup' => $Line['body'],
            );

            if (preg_match('/-->$/', $Line['text']))
            {
                $Block['closed'] = true;
            }

            return $Block;
        }
    }

    protected function blockCommentContinue($Line, array $Block)
    {
        if (isset($Block['closed']))
        {
            return;
        }

        $Block['markup'] .= "\n" . $Line['body'];

        if (preg_match('/-->$/', $Line['text']))
        {
            $Block['closed'] = true;
        }

        return $Block;
    }

    #
    # Fenced Code

    protected function blockFencedCode($Line)
    {
        if (preg_match('/^['.$Line['text'][0].']{3,}[ ]*([\w-]+)?[ ]*$/', $Line['text'], $matches))
        {
            $Element = array(
                'name' => 'code',
                'text' => '',
            );

            if (isset($matches[1]))
            {
                $class = 'language-'.$matches[1];

                $Element['attributes'] = array(
                    'class' => $class,
                );
            }

            $Block = array(
                'char' => $Line['text'][0],
                'element' => array(
                    'name' => 'pre',
                    'handler' => 'element',
                    'text' => $Element,
                ),
            );

            return $Block;
        }
    }

    protected function blockFencedCodeContinue($Line, $Block)
    {
        if (isset($Block['complete']))
        {
            return;
        }

        if (isset($Block['interrupted']))
        {
            $Block['element']['text']['text'] .= "\n";

            unset($Block['interrupted']);
        }

        if (preg_match('/^'.$Block['char'].'{3,}[ ]*$/', $Line['text']))
        {
            $Block['element']['text']['text'] = substr($Block['element']['text']['text'], 1);

            $Block['complete'] = true;

            return $Block;
        }

        $Block['element']['text']['text'] .= "\n".$Line['body'];

        return $Block;
    }

    protected function blockFencedCodeComplete($Block)
    {
        $text = $Block['element']['text']['text'];

        $text = htmlspecialchars($text, ENT_NOQUOTES, 'UTF-8');

        $Block['element']['text']['text'] = $text;

        return $Block;
    }

    #
    # Header

    protected function blockHeader($Line)
    {
        if (isset($Line['text'][1]))
        {
            $level = 1;

            while (isset($Line['text'][$level]) and $Line['text'][$level] === '#')
            {
                $level ++;
            }

            if ($level > 6)
            {
                return;
            }

            $text = trim($Line['text'], '# ');

            $Block = array(
                'element' => array(
                    'name' => 'h' . min(6, $level),
                    'text' => $text,
                    'handler' => 'line',
                ),
            );

            return $Block;
        }
    }

    #
    # List

    protected function blockList($Line)
    {
        list($name, $pattern) = $Line['text'][0] <= '-' ? array('ul', '[*+-]') : array('ol', '[0-9]+[.]');

        if (preg_match('/^('.$pattern.'[ ]+)(.*)/', $Line['text'], $matches))
        {
            $Block = array(
                'indent' => $Line['indent'],
                'pattern' => $pattern,
                'element' => array(
                    'name' => $name,
                    'handler' => 'elements',
                ),
            );

            if($name === 'ol') 
            {
                $listStart = stristr($matches[0], '.', true);
                
                if($listStart !== '1')
                {
                    $Block['element']['attributes'] = array('start' => $listStart);
                }
            }

            $Block['li'] = array(
                'name' => 'li',
                'handler' => 'li',
                'text' => array(
                    $matches[2],
                ),
            );

            $Block['element']['text'] []= & $Block['li'];

            return $Block;
        }
    }

    protected function blockListContinue($Line, array $Block)
    {
        if ($Block['indent'] === $Line['indent'] and preg_match('/^'.$Block['pattern'].'(?:[ ]+(.*)|$)/', $Line['text'], $matches))
        {
            if (isset($Block['interrupted']))
            {
                $Block['li']['text'] []= '';

                unset($Block['interrupted']);
            }

            unset($Block['li']);

            $text = isset($matches[1]) ? $matches[1] : '';

            $Block['li'] = array(
                'name' => 'li',
                'handler' => 'li',
                'text' => array(
                    $text,
                ),
            );

            $Block['element']['text'] []= & $Block['li'];

            return $Block;
        }

        if ($Line['text'][0] === '[' and $this->blockReference($Line))
        {
            return $Block;
        }

        if ( ! isset($Block['interrupted']))
        {
            $text = preg_replace('/^[ ]{0,4}/', '', $Line['body']);

            $Block['li']['text'] []= $text;

            return $Block;
        }

        if ($Line['indent'] > 0)
        {
            $Block['li']['text'] []= '';

            $text = preg_replace('/^[ ]{0,4}/', '', $Line['body']);

            $Block['li']['text'] []= $text;

            unset($Block['interrupted']);

            return $Block;
        }
    }

    #
    # Quote

    protected function blockQuote($Line)
    {
        if (preg_match('/^>[ ]?(.*)/', $Line['text'], $matches))
        {
            $Block = array(
                'element' => array(
                    'name' => 'blockquote',
                    'handler' => 'lines',
                    'text' => (array) $matches[1],
                ),
            );

            return $Block;
        }
    }

    protected function blockQuoteContinue($Line, array $Block)
    {
        if ($Line['text'][0] === '>' and preg_match('/^>[ ]?(.*)/', $Line['text'], $matches))
        {
            if (isset($Block['interrupted']))
            {
                $Block['element']['text'] []= '';

                unset($Block['interrupted']);
            }

            $Block['element']['text'] []= $matches[1];

            return $Block;
        }

        if ( ! isset($Block['interrupted']))
        {
            $Block['element']['text'] []= $Line['text'];

            return $Block;
        }
    }

    #
    # Rule

    protected function blockRule($Line)
    {
        if (preg_match('/^(['.$Line['text'][0].'])([ ]*\1){2,}[ ]*$/', $Line['text']))
        {
            $Block = array(
                'element' => array(
                    'name' => 'hr'
                ),
            );

            return $Block;
        }
    }

    #
    # Setext

    protected function blockSetextHeader($Line, array $Block = null)
    {
        if ( ! isset($Block) or isset($Block['type']) or isset($Block['interrupted']))
        {
            return;
        }

        if (chop($Line['text'], $Line['text'][0]) === '')
        {
            $Block['element']['name'] = $Line['text'][0] === '=' ? 'h1' : 'h2';

            return $Block;
        }
    }

    #
    # Markup

    protected function blockMarkup($Line)
    {
        if ($this->markupEscaped)
        {
            return;
        }

        if (preg_match('/^<(\w*)(?:[ ]*'.$this->regexHtmlAttribute.')*[ ]*(\/)?>/', $Line['text'], $matches))
        {
            $element = strtolower($matches[1]);

            if (in_array($element, $this->textLevelElements))
            {
                return;
            }

            $Block = array(
                'name' => $matches[1],
                'depth' => 0,
                'markup' => $Line['text'],
            );

            $length = strlen($matches[0]);

            $remainder = substr($Line['text'], $length);

            if (trim($remainder) === '')
            {
                if (isset($matches[2]) or in_array($matches[1], $this->voidElements))
                {
                    $Block['closed'] = true;

                    $Block['void'] = true;
                }
            }
            else
            {
                if (isset($matches[2]) or in_array($matches[1], $this->voidElements))
                {
                    return;
                }

                if (preg_match('/<\/'.$matches[1].'>[ ]*$/i', $remainder))
                {
                    $Block['closed'] = true;
                }
            }

            return $Block;
        }
    }

    protected function blockMarkupContinue($Line, array $Block)
    {
        if (isset($Block['closed']))
        {
            return;
        }

        if (preg_match('/^<'.$Block['name'].'(?:[ ]*'.$this->regexHtmlAttribute.')*[ ]*>/i', $Line['text'])) # open
        {
            $Block['depth'] ++;
        }

        if (preg_match('/(.*?)<\/'.$Block['name'].'>[ ]*$/i', $Line['text'], $matches)) # close
        {
            if ($Block['depth'] > 0)
            {
                $Block['depth'] --;
            }
            else
            {
                $Block['closed'] = true;
            }
        }

        if (isset($Block['interrupted']))
        {
            $Block['markup'] .= "\n";

            unset($Block['interrupted']);
        }

        $Block['markup'] .= "\n".$Line['body'];

        return $Block;
    }

    #
    # Reference

    protected function blockReference($Line)
    {
        if (preg_match('/^\[(.+?)\]:[ ]*<?(\S+?)>?(?:[ ]+["\'(](.+)["\')])?[ ]*$/', $Line['text'], $matches))
        {
            $id = strtolower($matches[1]);

            $Data = array(
                'url' => $matches[2],
                'title' => null,
            );

            if (isset($matches[3]))
            {
                $Data['title'] = $matches[3];
            }

            $this->DefinitionData['Reference'][$id] = $Data;

            $Block = array(
                'hidden' => true,
            );

            return $Block;
        }
    }

    #
    # Table

    protected function blockTable($Line, array $Block = null)
    {
        if ( ! isset($Block) or isset($Block['type']) or isset($Block['interrupted']))
        {
            return;
        }

        if (strpos($Block['element']['text'], '|') !== false and chop($Line['text'], ' -:|') === '')
        {
            $alignments = array();

            $divider = $Line['text'];

            $divider = trim($divider);
            $divider = trim($divider, '|');

            $dividerCells = explode('|', $divider);

            foreach ($dividerCells as $dividerCell)
            {
                $dividerCell = trim($dividerCell);

                if ($dividerCell === '')
                {
                    continue;
                }

                $alignment = null;

                if ($dividerCell[0] === ':')
                {
                    $alignment = 'left';
                }

                if (substr($dividerCell, - 1) === ':')
                {
                    $alignment = $alignment === 'left' ? 'center' : 'right';
                }

                $alignments []= $alignment;
            }

            # ~

            $HeaderElements = array();

            $header = $Block['element']['text'];

            $header = trim($header);
            $header = trim($header, '|');

            $headerCells = explode('|', $header);

            foreach ($headerCells as $index => $headerCell)
            {
                $headerCell = trim($headerCell);

                $HeaderElement = array(
                    'name' => 'th',
                    'text' => $headerCell,
                    'handler' => 'line',
                );

                if (isset($alignments[$index]))
                {
                    $alignment = $alignments[$index];

                    $HeaderElement['attributes'] = array(
                        'style' => 'text-align: '.$alignment.';',
                    );
                }

                $HeaderElements []= $HeaderElement;
            }

            # ~

            $Block = array(
                'alignments' => $alignments,
                'identified' => true,
                'element' => array(
                    'name' => 'table',
                    'handler' => 'elements',
                ),
            );

            $Block['element']['text'] []= array(
                'name' => 'thead',
                'handler' => 'elements',
            );

            $Block['element']['text'] []= array(
                'name' => 'tbody',
                'handler' => 'elements',
                'text' => array(),
            );

            $Block['element']['text'][0]['text'] []= array(
                'name' => 'tr',
                'handler' => 'elements',
                'text' => $HeaderElements,
            );

            return $Block;
        }
    }

    protected function blockTableContinue($Line, array $Block)
    {
        if (isset($Block['interrupted']))
        {
            return;
        }

        if ($Line['text'][0] === '|' or strpos($Line['text'], '|'))
        {
            $Elements = array();

            $row = $Line['text'];

            $row = trim($row);
            $row = trim($row, '|');

            preg_match_all('/(?:(\\\\[|])|[^|`]|`[^`]+`|`)+/', $row, $matches);

            foreach ($matches[0] as $index => $cell)
            {
                $cell = trim($cell);

                $Element = array(
                    'name' => 'td',
                    'handler' => 'line',
                    'text' => $cell,
                );

                if (isset($Block['alignments'][$index]))
                {
                    $Element['attributes'] = array(
                        'style' => 'text-align: '.$Block['alignments'][$index].';',
                    );
                }

                $Elements []= $Element;
            }

            $Element = array(
                'name' => 'tr',
                'handler' => 'elements',
                'text' => $Elements,
            );

            $Block['element']['text'][1]['text'] []= $Element;

            return $Block;
        }
    }

    #
    # ~
    #

    protected function paragraph($Line)
    {
        $Block = array(
            'element' => array(
                'name' => 'p',
                'text' => $Line['text'],
                'handler' => 'line',
            ),
        );

        return $Block;
    }

    #
    # Inline Elements
    #

    protected $InlineTypes = array(
        '"' => array('SpecialCharacter'),
        '!' => array('Image'),
        '&' => array('SpecialCharacter'),
        '*' => array('Emphasis'),
        ':' => array('Url'),
        '<' => array('UrlTag', 'EmailTag', 'Markup', 'SpecialCharacter'),
        '>' => array('SpecialCharacter'),
        '[' => array('Link'),
        '_' => array('Emphasis'),
        '`' => array('Code'),
        '~' => array('Strikethrough'),
        '\\' => array('EscapeSequence'),
    );

    # ~

    protected $inlineMarkerList = '!"*_&[:<>`~\\';

    #
    # ~
    #

    public function line($text)
    {
        $markup = '';

        # $excerpt is based on the first occurrence of a marker

        while ($excerpt = strpbrk($text, $this->inlineMarkerList))
        {
            $marker = $excerpt[0];

            $markerPosition = strpos($text, $marker);

            $Excerpt = array('text' => $excerpt, 'context' => $text);

            foreach ($this->InlineTypes[$marker] as $inlineType)
            {
                $Inline = $this->{'inline'.$inlineType}($Excerpt);

                if ( ! isset($Inline))
                {
                    continue;
                }

                # makes sure that the inline belongs to "our" marker

                if (isset($Inline['position']) and $Inline['position'] > $markerPosition)
                {
                    continue;
                }

                # sets a default inline position

                if ( ! isset($Inline['position']))
                {
                    $Inline['position'] = $markerPosition;
                }

                # the text that comes before the inline
                $unmarkedText = substr($text, 0, $Inline['position']);

                # compile the unmarked text
                $markup .= $this->unmarkedText($unmarkedText);

                # compile the inline
                $markup .= isset($Inline['markup']) ? $Inline['markup'] : $this->element($Inline['element']);

                # remove the examined text
                $text = substr($text, $Inline['position'] + $Inline['extent']);

                continue 2;
            }

            # the marker does not belong to an inline

            $unmarkedText = substr($text, 0, $markerPosition + 1);

            $markup .= $this->unmarkedText($unmarkedText);

            $text = substr($text, $markerPosition + 1);
        }

        $markup .= $this->unmarkedText($text);

        return $markup;
    }

    #
    # ~
    #

    protected function inlineCode($Excerpt)
    {
        $marker = $Excerpt['text'][0];

        if (preg_match('/^('.$marker.'+)[ ]*(.+?)[ ]*(?<!'.$marker.')\1(?!'.$marker.')/s', $Excerpt['text'], $matches))
        {
            $text = $matches[2];
            $text = htmlspecialchars($text, ENT_NOQUOTES, 'UTF-8');
            $text = preg_replace("/[ ]*\n/", ' ', $text);

            return array(
                'extent' => strlen($matches[0]),
                'element' => array(
                    'name' => 'code',
                    'text' => $text,
                ),
            );
        }
    }

    protected function inlineEmailTag($Excerpt)
    {
        if (strpos($Excerpt['text'], '>') !== false and preg_match('/^<((mailto:)?\S+?@\S+?)>/i', $Excerpt['text'], $matches))
        {
            $url = $matches[1];

            if ( ! isset($matches[2]))
            {
                $url = 'mailto:' . $url;
            }

            return array(
                'extent' => strlen($matches[0]),
                'element' => array(
                    'name' => 'a',
                    'text' => $matches[1],
                    'attributes' => array(
                        'href' => $url,
                    ),
                ),
            );
        }
    }

    protected function inlineEmphasis($Excerpt)
    {
        if ( ! isset($Excerpt['text'][1]))
        {
            return;
        }

        $marker = $Excerpt['text'][0];

        if ($Excerpt['text'][1] === $marker and preg_match($this->StrongRegex[$marker], $Excerpt['text'], $matches))
        {
            $emphasis = 'strong';
        }
        elseif (preg_match($this->EmRegex[$marker], $Excerpt['text'], $matches))
        {
            $emphasis = 'em';
        }
        else
        {
            return;
        }

        return array(
            'extent' => strlen($matches[0]),
            'element' => array(
                'name' => $emphasis,
                'handler' => 'line',
                'text' => $matches[1],
            ),
        );
    }

    protected function inlineEscapeSequence($Excerpt)
    {
        if (isset($Excerpt['text'][1]) and in_array($Excerpt['text'][1], $this->specialCharacters))
        {
            return array(
                'markup' => $Excerpt['text'][1],
                'extent' => 2,
            );
        }
    }

    protected function inlineImage($Excerpt)
    {
        if ( ! isset($Excerpt['text'][1]) or $Excerpt['text'][1] !== '[')
        {
            return;
        }

        $Excerpt['text']= substr($Excerpt['text'], 1);

        $Link = $this->inlineLink($Excerpt);

        if ($Link === null)
        {
            return;
        }

        $Inline = array(
            'extent' => $Link['extent'] + 1,
            'element' => array(
                'name' => 'img',
                'attributes' => array(
                    'src' => $Link['element']['attributes']['href'],
                    'alt' => $Link['element']['text'],
                ),
            ),
        );

        $Inline['element']['attributes'] += $Link['element']['attributes'];

        unset($Inline['element']['attributes']['href']);

        return $Inline;
    }

    protected function inlineLink($Excerpt)
    {
        $Element = array(
            'name' => 'a',
            'handler' => 'line',
            'text' => null,
            'attributes' => array(
                'href' => null,
                'title' => null,
            ),
        );

        $extent = 0;

        $remainder = $Excerpt['text'];

        if (preg_match('/\[((?:[^][]++|(?R))*+)\]/', $remainder, $matches))
        {
            $Element['text'] = $matches[1];

            $extent += strlen($matches[0]);

            $remainder = substr($remainder, $extent);
        }
        else
        {
            return;
        }

        if (preg_match('/^[(]\s*+((?:[^ ()]++|[(][^ )]+[)])++)(?:[ ]+("[^"]*"|\'[^\']*\'))?\s*[)]/', $remainder, $matches))
        {
            $Element['attributes']['href'] = $matches[1];

            if (isset($matches[2]))
            {
                $Element['attributes']['title'] = substr($matches[2], 1, - 1);
            }

            $extent += strlen($matches[0]);
        }
        else
        {
            if (preg_match('/^\s*\[(.*?)\]/', $remainder, $matches))
            {
                $definition = strlen($matches[1]) ? $matches[1] : $Element['text'];
                $definition = strtolower($definition);

                $extent += strlen($matches[0]);
            }
            else
            {
                $definition = strtolower($Element['text']);
            }

            if ( ! isset($this->DefinitionData['Reference'][$definition]))
            {
                return;
            }

            $Definition = $this->DefinitionData['Reference'][$definition];

            $Element['attributes']['href'] = $Definition['url'];
            $Element['attributes']['title'] = $Definition['title'];
        }

        $Element['attributes']['href'] = str_replace(array('&', '<'), array('&amp;', '&lt;'), $Element['attributes']['href']);

        return array(
            'extent' => $extent,
            'element' => $Element,
        );
    }

    protected function inlineMarkup($Excerpt)
    {
        if ($this->markupEscaped or strpos($Excerpt['text'], '>') === false)
        {
            return;
        }

        if ($Excerpt['text'][1] === '/' and preg_match('/^<\/\w*[ ]*>/s', $Excerpt['text'], $matches))
        {
            return array(
                'markup' => $matches[0],
                'extent' => strlen($matches[0]),
            );
        }

        if ($Excerpt['text'][1] === '!' and preg_match('/^<!---?[^>-](?:-?[^-])*-->/s', $Excerpt['text'], $matches))
        {
            return array(
                'markup' => $matches[0],
                'extent' => strlen($matches[0]),
            );
        }

        if ($Excerpt['text'][1] !== ' ' and preg_match('/^<\w*(?:[ ]*'.$this->regexHtmlAttribute.')*[ ]*\/?>/s', $Excerpt['text'], $matches))
        {
            return array(
                'markup' => $matches[0],
                'extent' => strlen($matches[0]),
            );
        }
    }

    protected function inlineSpecialCharacter($Excerpt)
    {
        if ($Excerpt['text'][0] === '&' and ! preg_match('/^&#?\w+;/', $Excerpt['text']))
        {
            return array(
                'markup' => '&amp;',
                'extent' => 1,
            );
        }

        $SpecialCharacter = array('>' => 'gt', '<' => 'lt', '"' => 'quot');

        if (isset($SpecialCharacter[$Excerpt['text'][0]]))
        {
            return array(
                'markup' => '&'.$SpecialCharacter[$Excerpt['text'][0]].';',
                'extent' => 1,
            );
        }
    }

    protected function inlineStrikethrough($Excerpt)
    {
        if ( ! isset($Excerpt['text'][1]))
        {
            return;
        }

        if ($Excerpt['text'][1] === '~' and preg_match('/^~~(?=\S)(.+?)(?<=\S)~~/', $Excerpt['text'], $matches))
        {
            return array(
                'extent' => strlen($matches[0]),
                'element' => array(
                    'name' => 'del',
                    'text' => $matches[1],
                    'handler' => 'line',
                ),
            );
        }
    }

    protected function inlineUrl($Excerpt)
    {
        if ($this->urlsLinked !== true or ! isset($Excerpt['text'][2]) or $Excerpt['text'][2] !== '/')
        {
            return;
        }

        if (preg_match('/\bhttps?:[\/]{2}[^\s<]+\b\/*/ui', $Excerpt['context'], $matches, PREG_OFFSET_CAPTURE))
        {
            $Inline = array(
                'extent' => strlen($matches[0][0]),
                'position' => $matches[0][1],
                'element' => array(
                    'name' => 'a',
                    'text' => $matches[0][0],
                    'attributes' => array(
                        'href' => $matches[0][0],
                    ),
                ),
            );

            return $Inline;
        }
    }

    protected function inlineUrlTag($Excerpt)
    {
        if (strpos($Excerpt['text'], '>') !== false and preg_match('/^<(\w+:\/{2}[^ >]+)>/i', $Excerpt['text'], $matches))
        {
            $url = str_replace(array('&', '<'), array('&amp;', '&lt;'), $matches[1]);

            return array(
                'extent' => strlen($matches[0]),
                'element' => array(
                    'name' => 'a',
                    'text' => $url,
                    'attributes' => array(
                        'href' => $url,
                    ),
                ),
            );
        }
    }

    # ~

    protected function unmarkedText($text)
    {
        if ($this->breaksEnabled)
        {
            $text = preg_replace('/[ ]*\n/', "<br />\n", $text);
        }
        else
        {
            $text = preg_replace('/(?:[ ][ ]+|[ ]*\\\\)\n/', "<br />\n", $text);
            $text = str_replace(" \n", "\n", $text);
        }

        return $text;
    }

    #
    # Handlers
    #

    protected function element(array $Element)
    {
        $markup = '<'.$Element['name'];

        if (isset($Element['attributes']))
        {
            foreach ($Element['attributes'] as $name => $value)
            {
                if ($value === null)
                {
                    continue;
                }

                $markup .= ' '.$name.'="'.$value.'"';
            }
        }

        if (isset($Element['text']))
        {
            $markup .= '>';

            if (isset($Element['handler']))
            {
                $markup .= $this->{$Element['handler']}($Element['text']);
            }
            else
            {
                $markup .= $Element['text'];
            }

            $markup .= '</'.$Element['name'].'>';
        }
        else
        {
            $markup .= ' />';
        }

        return $markup;
    }

    protected function elements(array $Elements)
    {
        $markup = '';

        foreach ($Elements as $Element)
        {
            $markup .= "\n" . $this->element($Element);
        }

        $markup .= "\n";

        return $markup;
    }

    # ~

    protected function li($lines)
    {
        $markup = $this->lines($lines);

        $trimmedMarkup = trim($markup);

        if ( ! in_array('', $lines) and substr($trimmedMarkup, 0, 3) === '<p>')
        {
            $markup = $trimmedMarkup;
            $markup = substr($markup, 3);

            $position = strpos($markup, "</p>");

            $markup = substr_replace($markup, '', $position, 4);
        }

        return $markup;
    }

    #
    # Deprecated Methods
    #

    function parse($text)
    {
        $markup = $this->text($text);

        return $markup;
    }

    #
    # Static Methods
    #

    static function instance($name = 'default')
    {
        if (isset(self::$instances[$name]))
        {
            return self::$instances[$name];
        }

        $instance = new static();

        self::$instances[$name] = $instance;

        return $instance;
    }

    private static $instances = array();

    #
    # Fields
    #

    protected $DefinitionData;

    #
    # Read-Only

    protected $specialCharacters = array(
        '\\', '`', '*', '_', '{', '}', '[', ']', '(', ')', '>', '#', '+', '-', '.', '!', '|',
    );

    protected $StrongRegex = array(
        '*' => '/^[*]{2}((?:\\\\\*|[^*]|[*][^*]*[*])+?)[*]{2}(?![*])/s',
        '_' => '/^__((?:\\\\_|[^_]|_[^_]*_)+?)__(?!_)/us',
    );

    protected $EmRegex = array(
        '*' => '/^[*]((?:\\\\\*|[^*]|[*][*][^*]+?[*][*])+?)[*](?![*])/s',
        '_' => '/^_((?:\\\\_|[^_]|__[^_]*__)+?)_(?!_)\b/us',
    );

    protected $regexHtmlAttribute = '[a-zA-Z_:][\w:.-]*(?:\s*=\s*(?:[^"\'=<>`\s]+|"[^"]*"|\'[^\']*\'))?';

    protected $voidElements = array(
        'area', 'base', 'br', 'col', 'command', 'embed', 'hr', 'img', 'input', 'link', 'meta', 'param', 'source',
    );

    protected $textLevelElements = array(
        'a', 'br', 'bdo', 'abbr', 'blink', 'nextid', 'acronym', 'basefont',
        'b', 'em', 'big', 'cite', 'small', 'spacer', 'listing',
        'i', 'rp', 'del', 'code',          'strike', 'marquee',
        'q', 'rt', 'ins', 'font',          'strong',
        's', 'tt', 'kbd', 'mark',
        'u', 'xm', 'sub', 'nobr',
                   'sup', 'ruby',
                   'var', 'span',
                   'wbr', 'time',
    );
}
<?php
/**
 * @license http://www.opensource.org/licenses/mit-license.php MIT (see the LICENSE file)
 */

namespace Interop\Container;

use Psr\Container\ContainerInterface as PsrContainerInterface;

/**
 * Describes the interface of a container that exposes methods to read its entries.
 */
interface ContainerInterface extends PsrContainerInterface
{
}
<?php
/**
 * @license http://www.opensource.org/licenses/mit-license.php MIT (see the LICENSE file)
 */

namespace Interop\Container\Exception;

use Psr\Container\ContainerExceptionInterface as PsrContainerException;

/**
 * Base interface representing a generic exception in a container.
 */
interface ContainerException extends PsrContainerException
{
}
<?php
/**
 * @license http://www.opensource.org/licenses/mit-license.php MIT (see the LICENSE file)
 */

namespace Interop\Container\Exception;

use Psr\Container\NotFoundExceptionInterface as PsrNotFoundException;

/**
 * No entry was found in the container.
 */
interface NotFoundException extends ContainerException, PsrNotFoundException
{
}
<?php

// autoload_namespaces.php @generated by Composer

$vendorDir = dirname(dirname(__FILE__));
$baseDir = dirname($vendorDir);

return array(
    'Twig_' => array($vendorDir . '/twig/twig/lib'),
    'Phine\\Phar' => array($vendorDir . '/phine/phar/src/lib'),
    'Phine\\Path' => array($vendorDir . '/phine/path/src/lib'),
    'Phine\\Observer' => array($vendorDir . '/phine/observer/src/lib'),
    'Phine\\Exception' => array($vendorDir . '/phine/exception/src/lib'),
    'ParsedownExtra' => array($vendorDir . '/erusev/parsedown-extra'),
    'Parsedown' => array($vendorDir . '/erusev/parsedown'),
);
<?php

/*
 * This file is part of Composer.
 *
 * (c) Nils Adermann <naderman@naderman.de>
 *     Jordi Boggiano <j.boggiano@seld.be>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Composer\Autoload;

/**
 * ClassLoader implements a PSR-0, PSR-4 and classmap class loader.
 *
 *     $loader = new \Composer\Autoload\ClassLoader();
 *
 *     // register classes with namespaces
 *     $loader->add('Symfony\Component', __DIR__.'/component');
 *     $loader->add('Symfony',           __DIR__.'/framework');
 *
 *     // activate the autoloader
 *     $loader->register();
 *
 *     // to enable searching the include path (eg. for PEAR packages)
 *     $loader->setUseIncludePath(true);
 *
 * In this example, if you try to use a class in the Symfony\Component
 * namespace or one of its children (Symfony\Component\Console for instance),
 * the autoloader will first look for the class under the component/
 * directory, and it will then fallback to the framework/ directory if not
 * found before giving up.
 *
 * This class is loosely based on the Symfony UniversalClassLoader.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @see    http://www.php-fig.org/psr/psr-0/
 * @see    http://www.php-fig.org/psr/psr-4/
 */
class ClassLoader
{
    // PSR-4
    private $prefixLengthsPsr4 = array();
    private $prefixDirsPsr4 = array();
    private $fallbackDirsPsr4 = array();

    // PSR-0
    private $prefixesPsr0 = array();
    private $fallbackDirsPsr0 = array();

    private $useIncludePath = false;
    private $classMap = array();
    private $classMapAuthoritative = false;
    private $missingClasses = array();
    private $apcuPrefix;

    public function getPrefixes()
    {
        if (!empty($this->prefixesPsr0)) {
            return call_user_func_array('array_merge', $this->prefixesPsr0);
        }

        return array();
    }

    public function getPrefixesPsr4()
    {
        return $this->prefixDirsPsr4;
    }

    public function getFallbackDirs()
    {
        return $this->fallbackDirsPsr0;
    }

    public function getFallbackDirsPsr4()
    {
        return $this->fallbackDirsPsr4;
    }

    public function getClassMap()
    {
        return $this->classMap;
    }

    /**
     * @param array $classMap Class to filename map
     */
    public function addClassMap(array $classMap)
    {
        if ($this->classMap) {
            $this->classMap = array_merge($this->classMap, $classMap);
        } else {
            $this->classMap = $classMap;
        }
    }

    /**
     * Registers a set of PSR-0 directories for a given prefix, either
     * appending or prepending to the ones previously set for this prefix.
     *
     * @param string       $prefix  The prefix
     * @param array|string $paths   The PSR-0 root directories
     * @param bool         $prepend Whether to prepend the directories
     */
    public function add($prefix, $paths, $prepend = false)
    {
        if (!$prefix) {
            if ($prepend) {
                $this->fallbackDirsPsr0 = array_merge(
                    (array) $paths,
                    $this->fallbackDirsPsr0
                );
            } else {
                $this->fallbackDirsPsr0 = array_merge(
                    $this->fallbackDirsPsr0,
                    (array) $paths
                );
            }

            return;
        }

        $first = $prefix[0];
        if (!isset($this->prefixesPsr0[$first][$prefix])) {
            $this->prefixesPsr0[$first][$prefix] = (array) $paths;

            return;
        }
        if ($prepend) {
            $this->prefixesPsr0[$first][$prefix] = array_merge(
                (array) $paths,
                $this->prefixesPsr0[$first][$prefix]
            );
        } else {
            $this->prefixesPsr0[$first][$prefix] = array_merge(
                $this->prefixesPsr0[$first][$prefix],
                (array) $paths
            );
        }
    }

    /**
     * Registers a set of PSR-4 directories for a given namespace, either
     * appending or prepending to the ones previously set for this namespace.
     *
     * @param string       $prefix  The prefix/namespace, with trailing '\\'
     * @param array|string $paths   The PSR-4 base directories
     * @param bool         $prepend Whether to prepend the directories
     *
     * @throws \InvalidArgumentException
     */
    public function addPsr4($prefix, $paths, $prepend = false)
    {
        if (!$prefix) {
            // Register directories for the root namespace.
            if ($prepend) {
                $this->fallbackDirsPsr4 = array_merge(
                    (array) $paths,
                    $this->fallbackDirsPsr4
                );
            } else {
                $this->fallbackDirsPsr4 = array_merge(
                    $this->fallbackDirsPsr4,
                    (array) $paths
                );
            }
        } elseif (!isset($this->prefixDirsPsr4[$prefix])) {
            // Register directories for a new namespace.
            $length = strlen($prefix);
            if ('\\' !== $prefix[$length - 1]) {
                throw new \InvalidArgumentException("A non-empty PSR-4 prefix must end with a namespace separator.");
            }
            $this->prefixLengthsPsr4[$prefix[0]][$prefix] = $length;
            $this->prefixDirsPsr4[$prefix] = (array) $paths;
        } elseif ($prepend) {
            // Prepend directories for an already registered namespace.
            $this->prefixDirsPsr4[$prefix] = array_merge(
                (array) $paths,
                $this->prefixDirsPsr4[$prefix]
            );
        } else {
            // Append directories for an already registered namespace.
            $this->prefixDirsPsr4[$prefix] = array_merge(
                $this->prefixDirsPsr4[$prefix],
                (array) $paths
            );
        }
    }

    /**
     * Registers a set of PSR-0 directories for a given prefix,
     * replacing any others previously set for this prefix.
     *
     * @param string       $prefix The prefix
     * @param array|string $paths  The PSR-0 base directories
     */
    public function set($prefix, $paths)
    {
        if (!$prefix) {
            $this->fallbackDirsPsr0 = (array) $paths;
        } else {
            $this->prefixesPsr0[$prefix[0]][$prefix] = (array) $paths;
        }
    }

    /**
     * Registers a set of PSR-4 directories for a given namespace,
     * replacing any others previously set for this namespace.
     *
     * @param string       $prefix The prefix/namespace, with trailing '\\'
     * @param array|string $paths  The PSR-4 base directories
     *
     * @throws \InvalidArgumentException
     */
    public function setPsr4($prefix, $paths)
    {
        if (!$prefix) {
            $this->fallbackDirsPsr4 = (array) $paths;
        } else {
            $length = strlen($prefix);
            if ('\\' !== $prefix[$length - 1]) {
                throw new \InvalidArgumentException("A non-empty PSR-4 prefix must end with a namespace separator.");
            }
            $this->prefixLengthsPsr4[$prefix[0]][$prefix] = $length;
            $this->prefixDirsPsr4[$prefix] = (array) $paths;
        }
    }

    /**
     * Turns on searching the include path for class files.
     *
     * @param bool $useIncludePath
     */
    public function setUseIncludePath($useIncludePath)
    {
        $this->useIncludePath = $useIncludePath;
    }

    /**
     * Can be used to check if the autoloader uses the include path to check
     * for classes.
     *
     * @return bool
     */
    public function getUseIncludePath()
    {
        return $this->useIncludePath;
    }

    /**
     * Turns off searching the prefix and fallback directories for classes
     * that have not been registered with the class map.
     *
     * @param bool $classMapAuthoritative
     */
    public function setClassMapAuthoritative($classMapAuthoritative)
    {
        $this->classMapAuthoritative = $classMapAuthoritative;
    }

    /**
     * Should class lookup fail if not found in the current class map?
     *
     * @return bool
     */
    public function isClassMapAuthoritative()
    {
        return $this->classMapAuthoritative;
    }

    /**
     * APCu prefix to use to cache found/not-found classes, if the extension is enabled.
     *
     * @param string|null $apcuPrefix
     */
    public function setApcuPrefix($apcuPrefix)
    {
        $this->apcuPrefix = function_exists('apcu_fetch') && filter_var(ini_get('apc.enabled'), FILTER_VALIDATE_BOOLEAN) ? $apcuPrefix : null;
    }

    /**
     * The APCu prefix in use, or null if APCu caching is not enabled.
     *
     * @return string|null
     */
    public function getApcuPrefix()
    {
        return $this->apcuPrefix;
    }

    /**
     * Registers this instance as an autoloader.
     *
     * @param bool $prepend Whether to prepend the autoloader or not
     */
    public function register($prepend = false)
    {
        spl_autoload_register(array($this, 'loadClass'), true, $prepend);
    }

    /**
     * Unregisters this instance as an autoloader.
     */
    public function unregister()
    {
        spl_autoload_unregister(array($this, 'loadClass'));
    }

    /**
     * Loads the given class or interface.
     *
     * @param  string    $class The name of the class
     * @return bool|null True if loaded, null otherwise
     */
    public function loadClass($class)
    {
        if ($file = $this->findFile($class)) {
            includeFile($file);

            return true;
        }
    }

    /**
     * Finds the path to the file where the class is defined.
     *
     * @param string $class The name of the class
     *
     * @return string|false The path if found, false otherwise
     */
    public function findFile($class)
    {
        // class map lookup
        if (isset($this->classMap[$class])) {
            return $this->classMap[$class];
        }
        if ($this->classMapAuthoritative || isset($this->missingClasses[$class])) {
            return false;
        }
        if (null !== $this->apcuPrefix) {
            $file = apcu_fetch($this->apcuPrefix.$class, $hit);
            if ($hit) {
                return $file;
            }
        }

        $file = $this->findFileWithExtension($class, '.php');

        // Search for Hack files if we are running on HHVM
        if (false === $file && defined('HHVM_VERSION')) {
            $file = $this->findFileWithExtension($class, '.hh');
        }

        if (null !== $this->apcuPrefix) {
            apcu_add($this->apcuPrefix.$class, $file);
        }

        if (false === $file) {
            // Remember that this class does not exist.
            $this->missingClasses[$class] = true;
        }

        return $file;
    }

    private function findFileWithExtension($class, $ext)
    {
        // PSR-4 lookup
        $logicalPathPsr4 = strtr($class, '\\', DIRECTORY_SEPARATOR) . $ext;

        $first = $class[0];
        if (isset($this->prefixLengthsPsr4[$first])) {
            $subPath = $class;
            while (false !== $lastPos = strrpos($subPath, '\\')) {
                $subPath = substr($subPath, 0, $lastPos);
                $search = $subPath . '\\';
                if (isset($this->prefixDirsPsr4[$search])) {
                    $pathEnd = DIRECTORY_SEPARATOR . substr($logicalPathPsr4, $lastPos + 1);
                    foreach ($this->prefixDirsPsr4[$search] as $dir) {
                        if (file_exists($file = $dir . $pathEnd)) {
                            return $file;
                        }
                    }
                }
            }
        }

        // PSR-4 fallback dirs
        foreach ($this->fallbackDirsPsr4 as $dir) {
            if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr4)) {
                return $file;
            }
        }

        // PSR-0 lookup
        if (false !== $pos = strrpos($class, '\\')) {
            // namespaced class name
            $logicalPathPsr0 = substr($logicalPathPsr4, 0, $pos + 1)
                . strtr(substr($logicalPathPsr4, $pos + 1), '_', DIRECTORY_SEPARATOR);
        } else {
            // PEAR-like class name
            $logicalPathPsr0 = strtr($class, '_', DIRECTORY_SEPARATOR) . $ext;
        }

        if (isset($this->prefixesPsr0[$first])) {
            foreach ($this->prefixesPsr0[$first] as $prefix => $dirs) {
                if (0 === strpos($class, $prefix)) {
                    foreach ($dirs as $dir) {
                        if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr0)) {
                            return $file;
                        }
                    }
                }
            }
        }

        // PSR-0 fallback dirs
        foreach ($this->fallbackDirsPsr0 as $dir) {
            if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr0)) {
                return $file;
            }
        }

        // PSR-0 include paths.
        if ($this->useIncludePath && $file = stream_resolve_include_path($logicalPathPsr0)) {
            return $file;
        }

        return false;
    }
}

/**
 * Scope isolated include.
 *
 * Prevents access to $this/self from included files.
 */
function includeFile($file)
{
    include $file;
}
##
## Bundle of CA Root Certificates
##
## Certificate data from Mozilla as of: Wed Aug 28 03:12:10 2019 GMT
##
## This is a bundle of X.509 certificates of public Certificate Authorities
## (CA). These were automatically extracted from Mozilla's root certificates
## file (certdata.txt).  This file can be found in the mozilla source tree:
## https://hg.mozilla.org/releases/mozilla-release/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt
##
## It contains the certificates in PEM format and therefore
## can be directly used with curl / libcurl / php_curl, or with
## an Apache+mod_ssl webserver for SSL client authentication.
## Just configure this file as the SSLCACertificateFile.
##
## Conversion done with mk-ca-bundle.pl version 1.27.
## SHA256: fffa309937c3be940649293f749b8207fabc6eb224e50e4bb3f2c5e44e0d6a6b
##


GlobalSign Root CA
==================
-----BEGIN CERTIFICATE-----
MIIDdTCCAl2gAwIBAgILBAAAAAABFUtaw5QwDQYJKoZIhvcNAQEFBQAwVzELMAkGA1UEBhMCQkUx
GTAXBgNVBAoTEEdsb2JhbFNpZ24gbnYtc2ExEDAOBgNVBAsTB1Jvb3QgQ0ExGzAZBgNVBAMTEkds
b2JhbFNpZ24gUm9vdCBDQTAeFw05ODA5MDExMjAwMDBaFw0yODAxMjgxMjAwMDBaMFcxCzAJBgNV
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VQQDExJHbG9iYWxTaWduIFJvb3QgQ0EwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDa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-----END CERTIFICATE-----

GlobalSign Root CA - R2
=======================
-----BEGIN CERTIFICATE-----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==
-----END CERTIFICATE-----

Verisign Class 3 Public Primary Certification Authority - G3
============================================================
-----BEGIN CERTIFICATE-----
MIIEGjCCAwICEQCbfgZJoz5iudXukEhxKe9XMA0GCSqGSIb3DQEBBQUAMIHKMQswCQYDVQQGEwJV
UzEXMBUGA1UEChMOVmVyaVNpZ24sIEluYy4xHzAdBgNVBAsTFlZlcmlTaWduIFRydXN0IE5ldHdv
cmsxOjA4BgNVBAsTMShjKSAxOTk5IFZlcmlTaWduLCBJbmMuIC0gRm9yIGF1dGhvcml6ZWQgdXNl
IG9ubHkxRTBDBgNVBAMTPFZlcmlTaWduIENsYXNzIDMgUHVibGljIFByaW1hcnkgQ2VydGlmaWNh
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ERSWwauSCPc/L8my/uRan2Te2yFPhpk0djZX3dAVL8WtfxUfN2JzPtTnX84XA9s1+ivbrmAJXx5f
j267Cz3qWhMeDGBvtcC1IyIuBwvLqXTLR7sdwdela8wv0kL9Sd2nic9TutoAWii/gt/4uhMdUIaC
/Y4wjylGsB49Ndo4YhYYSq3mtlFs3q9i6wHQHiT+eo8SGhJouPtmmRQURVyu565pF4ErWjfJXir0
xuKhXFSbplQAz/DxwceYMBo7Nhbbo27q/a2ywtrvAkcTisDxszGtTxzhT5yvDwyd93gN2PQ1VoDa
t20Xj50egWTh/sVFuq1ruQp6Tk9LhO5L8X3dEQ==
-----END CERTIFICATE-----

Entrust.net Premium 2048 Secure Server CA
=========================================
-----BEGIN CERTIFICATE-----
MIIEKjCCAxKgAwIBAgIEOGPe+DANBgkqhkiG9w0BAQUFADCBtDEUMBIGA1UEChMLRW50cnVzdC5u
ZXQxQDA+BgNVBAsUN3d3dy5lbnRydXN0Lm5ldC9DUFNfMjA0OCBpbmNvcnAuIGJ5IHJlZi4gKGxp
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-----END CERTIFICATE-----

Baltimore CyberTrust Root
=========================
-----BEGIN CERTIFICATE-----
MIIDdzCCAl+gAwIBAgIEAgAAuTANBgkqhkiG9w0BAQUFADBaMQswCQYDVQQGEwJJRTESMBAGA1UE
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-----END CERTIFICATE-----

AddTrust External Root
======================
-----BEGIN CERTIFICATE-----
MIIENjCCAx6gAwIBAgIBATANBgkqhkiG9w0BAQUFADBvMQswCQYDVQQGEwJTRTEUMBIGA1UEChML
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-----END CERTIFICATE-----

Entrust Root Certification Authority
====================================
-----BEGIN CERTIFICATE-----
MIIEkTCCA3mgAwIBAgIERWtQVDANBgkqhkiG9w0BAQUFADCBsDELMAkGA1UEBhMCVVMxFjAUBgNV
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-----END CERTIFICATE-----

GeoTrust Global CA
==================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

GeoTrust Universal CA
=====================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

GeoTrust Universal CA 2
=======================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Comodo AAA Services root
========================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

QuoVadis Root CA
================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

QuoVadis Root CA 2
==================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

QuoVadis Root CA 3
==================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Security Communication Root CA
==============================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Sonera Class 2 Root CA
======================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

XRamp Global CA Root
====================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Go Daddy Class 2 CA
===================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Starfield Class 2 CA
====================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Taiwan GRCA
===========
-----BEGIN CERTIFICATE-----
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DigiCert Assured ID Root CA
===========================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

DigiCert Global Root CA
=======================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

DigiCert High Assurance EV Root CA
==================================
-----BEGIN CERTIFICATE-----
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Certplus Class 2 Primary CA
===========================
-----BEGIN CERTIFICATE-----
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DST Root CA X3
==============
-----BEGIN CERTIFICATE-----
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SwissSign Gold CA - G2
======================
-----BEGIN CERTIFICATE-----
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SwissSign Silver CA - G2
========================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

GeoTrust Primary Certification Authority
========================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

thawte Primary Root CA
======================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

VeriSign Class 3 Public Primary Certification Authority - G5
============================================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

SecureTrust CA
==============
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Secure Global CA
================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

COMODO Certification Authority
==============================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Network Solutions Certificate Authority
=======================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

COMODO ECC Certification Authority
==================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

OISTE WISeKey Global Root GA CA
===============================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Certigna
========
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Deutsche Telekom Root CA 2
==========================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Cybertrust Global Root
======================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

ePKI Root Certification Authority
=================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

certSIGN ROOT CA
================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

GeoTrust Primary Certification Authority - G3
=============================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

thawte Primary Root CA - G2
===========================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

thawte Primary Root CA - G3
===========================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

GeoTrust Primary Certification Authority - G2
=============================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

VeriSign Universal Root Certification Authority
===============================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

VeriSign Class 3 Public Primary Certification Authority - G4
============================================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

NetLock Arany (Class Gold) FÅ‘tanÃºsÃ­tvÃ¡ny
========================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Staat der Nederlanden Root CA - G2
==================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Hongkong Post Root CA 1
=======================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

SecureSign RootCA11
===================
-----BEGIN CERTIFICATE-----
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Microsec e-Szigno Root CA 2009
==============================
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GlobalSign Root CA - R3
=======================
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Autoridad de Certificacion Firmaprofesional CIF A62634068
=========================================================
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Izenpe.com
==========
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Chambers of Commerce Root - 2008
================================
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Global Chambersign Root - 2008
==============================
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Go Daddy Root Certificate Authority - G2
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Starfield Root Certificate Authority - G2
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Starfield Services Root Certificate Authority - G2
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AffirmTrust Commercial
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AffirmTrust Networking
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AffirmTrust Premium
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AffirmTrust Premium ECC
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-----END CERTIFICATE-----

Certum Trusted Network CA
=========================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

TWCA Root Certification Authority
=================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Security Communication RootCA2
==============================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

EC-ACC
======
-----BEGIN CERTIFICATE-----
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5EI=
-----END CERTIFICATE-----

Hellenic Academic and Research Institutions RootCA 2011
=======================================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Actalis Authentication Root CA
==============================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Trustis FPS Root CA
===================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Buypass Class 2 Root CA
=======================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Buypass Class 3 Root CA
=======================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

T-TeleSec GlobalRoot Class 3
============================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

EE Certification Centre Root CA
===============================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

D-TRUST Root Class 3 CA 2 2009
==============================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

D-TRUST Root Class 3 CA 2 EV 2009
=================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

CA Disig Root R2
================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

ACCVRAIZ1
=========
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

TWCA Global Root CA
===================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

TeliaSonera Root CA v1
======================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

E-Tugra Certification Authority
===============================
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-----END CERTIFICATE-----

T-TeleSec GlobalRoot Class 2
============================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Atos TrustedRoot 2011
=====================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

QuoVadis Root CA 1 G3
=====================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

QuoVadis Root CA 2 G3
=====================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

QuoVadis Root CA 3 G3
=====================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

DigiCert Assured ID Root G2
===========================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

DigiCert Assured ID Root G3
===========================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

DigiCert Global Root G2
=======================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

DigiCert Global Root G3
=======================
-----BEGIN CERTIFICATE-----
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DigiCert Trusted Root G4
========================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

COMODO RSA Certification Authority
==================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

USERTrust RSA Certification Authority
=====================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

USERTrust ECC Certification Authority
=====================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

GlobalSign ECC Root CA - R4
===========================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

GlobalSign ECC Root CA - R5
===========================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Staat der Nederlanden Root CA - G3
==================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Staat der Nederlanden EV Root CA
================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

IdenTrust Commercial Root CA 1
==============================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

IdenTrust Public Sector Root CA 1
=================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Entrust Root Certification Authority - G2
=========================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Entrust Root Certification Authority - EC1
==========================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

CFCA EV ROOT
============
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

OISTE WISeKey Global Root GB CA
===============================
-----BEGIN CERTIFICATE-----
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SZAFIR ROOT CA2
===============
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Certum Trusted Network CA 2
===========================
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-----END CERTIFICATE-----

Hellenic Academic and Research Institutions RootCA 2015
=======================================================
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Hellenic Academic and Research Institutions ECC RootCA 2015
===========================================================
-----BEGIN CERTIFICATE-----
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ISRG Root X1
============
-----BEGIN CERTIFICATE-----
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AC RAIZ FNMT-RCM
================
-----BEGIN CERTIFICATE-----
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Amazon Root CA 1
================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Amazon Root CA 2
================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Amazon Root CA 3
================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Amazon Root CA 4
================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

LuxTrust Global Root 2
======================
-----BEGIN CERTIFICATE-----
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TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1
=============================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

GDCA TrustAUTH R5 ROOT
======================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

TrustCor RootCert CA-1
======================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

TrustCor RootCert CA-2
======================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

TrustCor ECA-1
==============
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

SSL.com Root Certification Authority RSA
========================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

SSL.com Root Certification Authority ECC
========================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

SSL.com EV Root Certification Authority RSA R2
==============================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

SSL.com EV Root Certification Authority ECC
===========================================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

GlobalSign Root CA - R6
=======================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

OISTE WISeKey Global Root GC CA
===============================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

GTS Root R1
===========
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

GTS Root R2
===========
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

GTS Root R3
===========
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

GTS Root R4
===========
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

UCA Global G2 Root
==================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

UCA Extended Validation Root
============================
-----BEGIN CERTIFICATE-----
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dhh2n1ax
-----END CERTIFICATE-----

Certigna Root CA
================
-----BEGIN CERTIFICATE-----
MIIGWzCCBEOgAwIBAgIRAMrpG4nxVQMNo+ZBbcTjpuEwDQYJKoZIhvcNAQELBQAwWjELMAkGA1UE
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E4yBFxgX0b3xdxA61GU5wSesVywlVP+i2k+KYTlerj1KjL0=
-----END CERTIFICATE-----

emSign Root CA - G1
===================
-----BEGIN CERTIFICATE-----
MIIDlDCCAnygAwIBAgIKMfXkYgxsWO3W2DANBgkqhkiG9w0BAQsFADBnMQswCQYDVQQGEwJJTjET
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iN66zB+Afko=
-----END CERTIFICATE-----

emSign ECC Root CA - G3
=======================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

emSign Root CA - C1
===================
-----BEGIN CERTIFICATE-----
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BmIMMMAVSKeoWXzhriKi4gp6D/piq1JM4fHfyr6DDUI=
-----END CERTIFICATE-----

emSign ECC Root CA - C3
=======================
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Hongkong Post Root CA 3
=======================
-----BEGIN CERTIFICATE-----
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dBb9HxEGmpv0
-----END CERTIFICATE-----
<?php

/*
 * This file is part of composer/ca-bundle.
 *
 * (c) Composer <https://github.com/composer>
 *
 * For the full copyright and license information, please view
 * the LICENSE file that was distributed with this source code.
 */

namespace Composer\CaBundle;

use Psr\Log\LoggerInterface;
use Symfony\Component\Process\PhpProcess;

/**
 * @author Chris Smith <chris@cs278.org>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class CaBundle
{
    private static $caPath;
    private static $caFileValidity = array();
    private static $useOpensslParse;

    /**
     * Returns the system CA bundle path, or a path to the bundled one
     *
     * This method was adapted from Sslurp.
     * https://github.com/EvanDotPro/Sslurp
     *
     * (c) Evan Coury <me@evancoury.com>
     *
     * For the full copyright and license information, please see below:
     *
     * Copyright (c) 2013, Evan Coury
     * All rights reserved.
     *
     * Redistribution and use in source and binary forms, with or without modification,
     * are permitted provided that the following conditions are met:
     *
     *     * Redistributions of source code must retain the above copyright notice,
     *       this list of conditions and the following disclaimer.
     *
     *     * Redistributions in binary form must reproduce the above copyright notice,
     *       this list of conditions and the following disclaimer in the documentation
     *       and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
     * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
     * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * @param  LoggerInterface $logger optional logger for information about which CA files were loaded
     * @return string          path to a CA bundle file or directory
     */
    public static function getSystemCaRootBundlePath(LoggerInterface $logger = null)
    {
        if (self::$caPath !== null) {
            return self::$caPath;
        }
        $caBundlePaths = array();


        // If SSL_CERT_FILE env variable points to a valid certificate/bundle, use that.
        // This mimics how OpenSSL uses the SSL_CERT_FILE env variable.
        $caBundlePaths[] = getenv('SSL_CERT_FILE');

        // If SSL_CERT_DIR env variable points to a valid certificate/bundle, use that.
        // This mimics how OpenSSL uses the SSL_CERT_FILE env variable.
        $caBundlePaths[] = getenv('SSL_CERT_DIR');

        $caBundlePaths[] = ini_get('openssl.cafile');
        $caBundlePaths[] = ini_get('openssl.capath');

        $otherLocations = array(
            '/etc/pki/tls/certs/ca-bundle.crt', // Fedora, RHEL, CentOS (ca-certificates package)
            '/etc/ssl/certs/ca-certificates.crt', // Debian, Ubuntu, Gentoo, Arch Linux (ca-certificates package)
            '/etc/ssl/ca-bundle.pem', // SUSE, openSUSE (ca-certificates package)
            '/usr/local/share/certs/ca-root-nss.crt', // FreeBSD (ca_root_nss_package)
            '/usr/ssl/certs/ca-bundle.crt', // Cygwin
            '/opt/local/share/curl/curl-ca-bundle.crt', // OS X macports, curl-ca-bundle package
            '/usr/local/share/curl/curl-ca-bundle.crt', // Default cURL CA bunde path (without --with-ca-bundle option)
            '/usr/share/ssl/certs/ca-bundle.crt', // Really old RedHat?
            '/etc/ssl/cert.pem', // OpenBSD
            '/usr/local/etc/ssl/cert.pem', // FreeBSD 10.x
            '/usr/local/etc/openssl/cert.pem', // OS X homebrew, openssl package
        );

        foreach($otherLocations as $location) {
            $otherLocations[] = dirname($location);
        }

        $caBundlePaths = array_merge($caBundlePaths, $otherLocations);

        foreach ($caBundlePaths as $caBundle) {
            if (self::caFileUsable($caBundle, $logger)) {
                return self::$caPath = $caBundle;
            }

            if (self::caDirUsable($caBundle)) {
                return self::$caPath = $caBundle;
            }
        }

        return self::$caPath = static::getBundledCaBundlePath(); // Bundled CA file, last resort
    }

    /**
     * Returns the path to the bundled CA file
     *
     * In case you don't want to trust the user or the system, you can use this directly
     *
     * @return string path to a CA bundle file
     */
    public static function getBundledCaBundlePath()
    {
        $caBundleFile = __DIR__.'/../res/cacert.pem';

        // cURL does not understand 'phar://' paths
        // see https://github.com/composer/ca-bundle/issues/10
        if (0 === strpos($caBundleFile, 'phar://')) {
            file_put_contents(
                $tempCaBundleFile = tempnam(sys_get_temp_dir(), 'openssl-ca-bundle-'),
                file_get_contents($caBundleFile)
            );

            register_shutdown_function(function() use ($tempCaBundleFile) {
                @unlink($tempCaBundleFile);
            });

            $caBundleFile = $tempCaBundleFile;
        }

        return $caBundleFile;
    }

    /**
     * Validates a CA file using opensl_x509_parse only if it is safe to use
     *
     * @param string          $filename
     * @param LoggerInterface $logger   optional logger for information about which CA files were loaded
     *
     * @return bool
     */
    public static function validateCaFile($filename, LoggerInterface $logger = null)
    {
        static $warned = false;

        if (isset(self::$caFileValidity[$filename])) {
            return self::$caFileValidity[$filename];
        }

        $contents = file_get_contents($filename);

        // assume the CA is valid if php is vulnerable to
        // https://www.sektioneins.de/advisories/advisory-012013-php-openssl_x509_parse-memory-corruption-vulnerability.html
        if (!static::isOpensslParseSafe()) {
            if (!$warned && $logger) {
                $logger->warning(sprintf(
                    'Your version of PHP, %s, is affected by CVE-2013-6420 and cannot safely perform certificate validation, we strongly suggest you upgrade.',
                    PHP_VERSION
                ));
                $warned = true;
            }

            $isValid = !empty($contents);
        } else {
            $isValid = (bool) openssl_x509_parse($contents);
        }

        if ($logger) {
            $logger->debug('Checked CA file '.realpath($filename).': '.($isValid ? 'valid' : 'invalid'));
        }

        return self::$caFileValidity[$filename] = $isValid;
    }

    /**
     * Test if it is safe to use the PHP function openssl_x509_parse().
     *
     * This checks if OpenSSL extensions is vulnerable to remote code execution
     * via the exploit documented as CVE-2013-6420.
     *
     * @return bool
     */
    public static function isOpensslParseSafe()
    {
        if (null !== self::$useOpensslParse) {
            return self::$useOpensslParse;
        }

        if (PHP_VERSION_ID >= 50600) {
            return self::$useOpensslParse = true;
        }

        // Vulnerable:
        // PHP 5.3.0 - PHP 5.3.27
        // PHP 5.4.0 - PHP 5.4.22
        // PHP 5.5.0 - PHP 5.5.6
        if (
               (PHP_VERSION_ID < 50400 && PHP_VERSION_ID >= 50328)
            || (PHP_VERSION_ID < 50500 && PHP_VERSION_ID >= 50423)
            || (PHP_VERSION_ID < 50600 && PHP_VERSION_ID >= 50507)
        ) {
            // This version of PHP has the fix for CVE-2013-6420 applied.
            return self::$useOpensslParse = true;
        }

        if (defined('PHP_WINDOWS_VERSION_BUILD')) {
            // Windows is probably insecure in this case.
            return self::$useOpensslParse = false;
        }

        $compareDistroVersionPrefix = function ($prefix, $fixedVersion) {
            $regex = '{^'.preg_quote($prefix).'([0-9]+)$}';

            if (preg_match($regex, PHP_VERSION, $m)) {
                return ((int) $m[1]) >= $fixedVersion;
            }

            return false;
        };

        // Hard coded list of PHP distributions with the fix backported.
        if (
            $compareDistroVersionPrefix('5.3.3-7+squeeze', 18) // Debian 6 (Squeeze)
            || $compareDistroVersionPrefix('5.4.4-14+deb7u', 7) // Debian 7 (Wheezy)
            || $compareDistroVersionPrefix('5.3.10-1ubuntu3.', 9) // Ubuntu 12.04 (Precise)
        ) {
            return self::$useOpensslParse = true;
        }

        // Symfony Process component is missing so we assume it is unsafe at this point
        if (!class_exists('Symfony\Component\Process\PhpProcess')) {
            return self::$useOpensslParse = false;
        }

        // This is where things get crazy, because distros backport security
        // fixes the chances are on NIX systems the fix has been applied but
        // it's not possible to verify that from the PHP version.
        //
        // To verify exec a new PHP process and run the issue testcase with
        // known safe input that replicates the bug.

        // Based on testcase in https://github.com/php/php-src/commit/c1224573c773b6845e83505f717fbf820fc18415
        // changes in https://github.com/php/php-src/commit/76a7fd893b7d6101300cc656058704a73254d593
        $cert = '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';
        $script = <<<'EOT'

error_reporting(-1);
$info = openssl_x509_parse(base64_decode('%s'));
var_dump(PHP_VERSION, $info['issuer']['emailAddress'], $info['validFrom_time_t']);

EOT;
        $script = '<'."?php\n".sprintf($script, $cert);

        try {
            $process = new PhpProcess($script);
            $process->mustRun();
        } catch (\Exception $e) {
            // In the case of any exceptions just accept it is not possible to
            // determine the safety of openssl_x509_parse and bail out.
            return self::$useOpensslParse = false;
        }

        $output = preg_split('{\r?\n}', trim($process->getOutput()));
        $errorOutput = trim($process->getErrorOutput());

        if (
            count($output) === 3
            && $output[0] === sprintf('string(%d) "%s"', strlen(PHP_VERSION), PHP_VERSION)
            && $output[1] === 'string(27) "stefan.esser@sektioneins.de"'
            && $output[2] === 'int(-1)'
            && preg_match('{openssl_x509_parse\(\): illegal (?:ASN1 data type for|length in) timestamp in - on line \d+}', $errorOutput)
        ) {
            // This PHP has the fix backported probably by a distro security team.
            return self::$useOpensslParse = true;
        }

        return self::$useOpensslParse = false;
    }

    /**
     * Resets the static caches
     */
    public static function reset()
    {
        self::$caFileValidity = array();
        self::$caPath = null;
        self::$useOpensslParse = null;
    }

    private static function caFileUsable($certFile, LoggerInterface $logger = null)
    {
        return $certFile && @is_file($certFile) && @is_readable($certFile) && static::validateCaFile($certFile, $logger);
    }

    private static function caDirUsable($certDir)
    {
        return $certDir && @is_dir($certDir) && @is_readable($certDir) && glob($certDir . '/*');
    }
}
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<?php

// autoload_static.php @generated by Composer

namespace Composer\Autoload;

class ComposerStaticInit0d10fbe001cdd2d71e01f7951179cdaf
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        'Twig_TokenParser_Extends' => __DIR__ . '/..' . '/twig/twig/lib/Twig/TokenParser/Extends.php',
        'Twig_TokenParser_Filter' => __DIR__ . '/..' . '/twig/twig/lib/Twig/TokenParser/Filter.php',
        'Twig_TokenParser_Flush' => __DIR__ . '/..' . '/twig/twig/lib/Twig/TokenParser/Flush.php',
        'Twig_TokenParser_For' => __DIR__ . '/..' . '/twig/twig/lib/Twig/TokenParser/For.php',
        'Twig_TokenParser_From' => __DIR__ . '/..' . '/twig/twig/lib/Twig/TokenParser/From.php',
        'Twig_TokenParser_If' => __DIR__ . '/..' . '/twig/twig/lib/Twig/TokenParser/If.php',
        'Twig_TokenParser_Import' => __DIR__ . '/..' . '/twig/twig/lib/Twig/TokenParser/Import.php',
        'Twig_TokenParser_Include' => __DIR__ . '/..' . '/twig/twig/lib/Twig/TokenParser/Include.php',
        'Twig_TokenParser_Macro' => __DIR__ . '/..' . '/twig/twig/lib/Twig/TokenParser/Macro.php',
        'Twig_TokenParser_Sandbox' => __DIR__ . '/..' . '/twig/twig/lib/Twig/TokenParser/Sandbox.php',
        'Twig_TokenParser_Set' => __DIR__ . '/..' . '/twig/twig/lib/Twig/TokenParser/Set.php',
        'Twig_TokenParser_Spaceless' => __DIR__ . '/..' . '/twig/twig/lib/Twig/TokenParser/Spaceless.php',
        'Twig_TokenParser_Use' => __DIR__ . '/..' . '/twig/twig/lib/Twig/TokenParser/Use.php',
        'Twig_TokenParser_With' => __DIR__ . '/..' . '/twig/twig/lib/Twig/TokenParser/With.php',
        'Twig_TokenStream' => __DIR__ . '/..' . '/twig/twig/lib/Twig/TokenStream.php',
        'Twig_Util_DeprecationCollector' => __DIR__ . '/..' . '/twig/twig/lib/Twig/Util/DeprecationCollector.php',
        'Twig_Util_TemplateDirIterator' => __DIR__ . '/..' . '/twig/twig/lib/Twig/Util/TemplateDirIterator.php',
    );

    public static function getInitializer(ClassLoader $loader)
    {
        return \Closure::bind(function () use ($loader) {
            $loader->prefixLengthsPsr4 = ComposerStaticInit0d10fbe001cdd2d71e01f7951179cdaf::$prefixLengthsPsr4;
            $loader->prefixDirsPsr4 = ComposerStaticInit0d10fbe001cdd2d71e01f7951179cdaf::$prefixDirsPsr4;
            $loader->prefixesPsr0 = ComposerStaticInit0d10fbe001cdd2d71e01f7951179cdaf::$prefixesPsr0;
            $loader->classMap = ComposerStaticInit0d10fbe001cdd2d71e01f7951179cdaf::$classMap;

        }, null, ClassLoader::class);
    }
}
<?php

// autoload_real.php @generated by Composer

class ComposerAutoloaderInit0d10fbe001cdd2d71e01f7951179cdaf
{
    private static $loader;

    public static function loadClassLoader($class)
    {
        if ('Composer\Autoload\ClassLoader' === $class) {
            require __DIR__ . '/ClassLoader.php';
        }
    }

    public static function getLoader()
    {
        if (null !== self::$loader) {
            return self::$loader;
        }

        spl_autoload_register(array('ComposerAutoloaderInit0d10fbe001cdd2d71e01f7951179cdaf', 'loadClassLoader'), true, true);
        self::$loader = $loader = new \Composer\Autoload\ClassLoader();
        spl_autoload_unregister(array('ComposerAutoloaderInit0d10fbe001cdd2d71e01f7951179cdaf', 'loadClassLoader'));

        $useStaticLoader = PHP_VERSION_ID >= 50600 && !defined('HHVM_VERSION') && (!function_exists('zend_loader_file_encoded') || !zend_loader_file_encoded());
        if ($useStaticLoader) {
            require_once __DIR__ . '/autoload_static.php';

            call_user_func(\Composer\Autoload\ComposerStaticInit0d10fbe001cdd2d71e01f7951179cdaf::getInitializer($loader));
        } else {
            $map = require __DIR__ . '/autoload_namespaces.php';
            foreach ($map as $namespace => $path) {
                $loader->set($namespace, $path);
            }

            $map = require __DIR__ . '/autoload_psr4.php';
            foreach ($map as $namespace => $path) {
                $loader->setPsr4($namespace, $path);
            }

            $classMap = require __DIR__ . '/autoload_classmap.php';
            if ($classMap) {
                $loader->addClassMap($classMap);
            }
        }

        $loader->register(true);

        if ($useStaticLoader) {
            $includeFiles = Composer\Autoload\ComposerStaticInit0d10fbe001cdd2d71e01f7951179cdaf::$files;
        } else {
            $includeFiles = require __DIR__ . '/autoload_files.php';
        }
        foreach ($includeFiles as $fileIdentifier => $file) {
            composerRequire0d10fbe001cdd2d71e01f7951179cdaf($fileIdentifier, $file);
        }

        return $loader;
    }
}

function composerRequire0d10fbe001cdd2d71e01f7951179cdaf($fileIdentifier, $file)
{
    if (empty($GLOBALS['__composer_autoload_files'][$fileIdentifier])) {
        require $file;

        $GLOBALS['__composer_autoload_files'][$fileIdentifier] = true;
    }
}
<?php

// autoload_files.php @generated by Composer

$vendorDir = dirname(dirname(__FILE__));
$baseDir = dirname($vendorDir);

return array(
    '320cde22f66dd4f5d3fd621d3e88b98f' => $vendorDir . '/symfony/polyfill-ctype/bootstrap.php',
    '0e6d7bf4a5811bfa5cf40c5ccd6fae6a' => $vendorDir . '/symfony/polyfill-mbstring/bootstrap.php',
    'd9d39f82a605ebe5918f683dd402334c' => $vendorDir . '/padraic/humbug_get_contents/src/function.php',
    '3a50d90d85c7fe889a94ae1114b921ce' => $vendorDir . '/padraic/humbug_get_contents/src/functions.php',
    'bbf73f3db644d3dced353b837903e74c' => $vendorDir . '/php-di/php-di/src/DI/functions.php',
);
<?php

/*
 * This file is part of the Humbug package.
 *
 * (c) 2015 PÃ¡draic Brady <padraic.brady@gmail.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Humbug;

/**
 * Reads entire file into a string.
 *
 * @param string              $filename Name of the file to read.
 * @param bool                $use_include_path
 * @param resource|array|null $context A valid context resource created with `stream_context_create()`. If you don't
 *                                     need to use a custom context, you can skip this parameter.
 *
 * @return string|bool The read data or `false` on failure.
 */
function get_contents($filename, $use_include_path = false, $context = null)
{
    static $fileGetContents = null;

    if ('https' == parse_url($filename, PHP_URL_SCHEME) && PHP_VERSION_ID < 50600) {
        if (!isset($fileGetContents)) {
            $fileGetContents = new FileGetContents();
        }

        return $fileGetContents->get($filename, $context);
    } elseif (FileGetContents::hasNextRequestHeaders()) {
        if ($context === null) {
            $context = stream_context_create();
        }

        $context = FileGetContents::setHttpHeaders($context);
    }

    $return = file_get_contents($filename, $use_include_path, $context);

    if (isset($http_response_header)) {
        FileGetContents::setLastResponseHeaders($http_response_header);
    }

    return $return;
}

/**
 * Fetches all the headers sent by the server in response to a HTTPS request triggered by `get_contents()`.
 *
 * @return array|null Returns an indexed or associative array with the headers, or `null` on failure or if no request
 *                    has been made yet.
 */
function get_headers()
{
    return FileGetContents::getLastResponseHeaders();
}

/**
 * @param array $headers An indexed or associative array.
 */
function set_headers(array $headers)
{
    FileGetContents::setNextRequestHeaders($headers);
}
<?php

/*
 * This file is part of the Humbug package.
 *
 * (c) 2015 PÃ¡draic Brady <padraic.brady@gmail.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

if (!function_exists('humbug_get_contents')) {
    function humbug_get_contents($filename, $use_include_path = false, $context = null)
    {
        @trigger_error(
            'humbug_get_contents() is deprecated since 1.1.0 and will be removed in 2.0.0. Use '
            .'Humbug/get_contents() instead.',
            E_USER_DEPRECATED
        );

        return Humbug\get_contents($filename, $use_include_path, $context);
    }
}

if (!function_exists('humbug_get_headers')) {
    function humbug_get_headers()
    {
        @trigger_error(
            'humbug_get_headers() is deprecated since 1.1.0 and will be removed in 2.0.0. Use '
            .'Humbug/get_headers() instead.',
            E_USER_DEPRECATED
        );

        return Humbug\get_headers();
    }
}

if (!function_exists('humbug_set_headers')) {
    function humbug_set_headers(array $headers)
    {
        @trigger_error(
            'humbug_set_headers() is deprecated since 1.1.0 and will be removed in 2.0.0. Use '
            .'Humbug/get_headers() instead.',
            E_USER_DEPRECATED
        );

        Humbug\set_headers($headers);
    }
}
<?php

/*
 * This file is part of the Humbug package.
 *
 * (c) 2015 PÃ¡draic Brady <padraic.brady@gmail.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Humbug;

use Composer\CaBundle\CaBundle;
use RuntimeException;

/**
 * This is largely extracted from the Composer Installer where originally implemented.
 */
class FileGetContents
{
    /**
     * @var array|null
     *
     * @private
     */
    protected static $lastResponseHeaders;

    /**
     * @var array|null
     *
     * @private
     */
    protected static $nextRequestHeaders;

    protected $options = array('http' => array());

    public function __construct()
    {
        $options = $this->getTlsStreamContextDefaults(null);
        $this->options = array_replace_recursive($this->options, $options);
    }

    /**
     * @param string              $filename Name of the file to read.
     * @param resource|array|null $context A valid context resource created with `stream_context_create()`. If you don't
     *                                     need to use a custom context, you can skip this parameter.
     *
     * @return bool|string The read data or `false` on failure.
     */
    public function get($filename, $context = null)
    {
        $context = $this->getStreamContext($filename);
        $context = self::setHttpHeaders($context);

        $result = file_get_contents($filename, null, $context);

        self::setLastResponseHeaders($http_response_header);

        return $result;
    }

    /**
     * @param array $headers HTTP response headers.
     *
     * @final Since 1.1.0
     */
    public static function setLastResponseHeaders($headers)
    {
        self::$lastResponseHeaders = $headers;
    }

    /**
     * @return array|null HTTP response headers for the last response recorded or `null` if none has been recorded.
     *
     * @final Since 1.1.0
     */
    public static function getLastResponseHeaders()
    {
        return self::$lastResponseHeaders;
    }

    /**
     * @param array $headers An indexed or associative array.
     *
     * @final since 1.1.0
     */
    public static function setNextRequestHeaders(array $headers)
    {
        self::$nextRequestHeaders = $headers;
    }

    /**
     * @return bool
     *
     * @final since 1.1.0
     */
    public static function hasNextRequestHeaders()
    {
        return null !== self::$nextRequestHeaders;
    }

    /**
     * @return array|null An indexed or associative array whence there is any headers, `null` otherwise.
     */
    public static function getNextRequestHeaders()
    {
        $return = self::$nextRequestHeaders;
        self::$nextRequestHeaders = null;

        return $return;
    }

    /**
     * @param resource|array|null $context A valid context resource created with `stream_context_create()`. If you don't
     *                                     need to use a custom context, you can skip this parameter.
     *
     * @return resource|array|null Context to which the headers has been set.
     *
     * @private since 1.1.0
     *
     * TODO (2.0.0): change the name to reflect on the immutable side.
     */
    public static function setHttpHeaders($context)
    {
        $headers = self::getNextRequestHeaders();

        if (empty($headers)) {
            return $context;
        }

        $options = stream_context_get_options($context);
        if (!isset($options['http'])) {
            $options['http'] = array('header' => array());
        } elseif (!isset($options['http']['header'])) {
            $options['http']['header'] = array();
        } elseif (is_string($options['http']['header'])) {
            $options['http']['header'] = explode("\r\n", $options['http']['header']);
        }

        $headers = empty($options['http']['headers']) ? $headers : array_merge($options['http']['headers'], $headers);

        stream_context_set_option(
            $context,
            'http',
            'header',
            $headers
        );

        return $context;
    }

    /**
     * @param string $url URL path to access to the file to read.
     *
     * @return resource
     *
     * @final since 1.1.0
     */
    protected function getStreamContext($url)
    {
        $host = parse_url($url, PHP_URL_HOST);

        if (PHP_VERSION_ID < 50600) {
            $this->options['ssl']['CN_match'] = $host;
            $this->options['ssl']['SNI_server_name'] = $host;
        }

        return $this->getMergedStreamContext($url);
    }

    /**
     * @param string $cafile
     *
     * @return array
     *
     * @private since 1.1.0
     *
     * TODO (2.0.0): remove argument (unnused in the codebase) and rename this method as an `init*` as is used in the
     *               constructor anymore
     */
    protected function getTlsStreamContextDefaults($cafile)
    {
        $ciphers = implode(':', array(
            'ECDHE-RSA-AES128-GCM-SHA256',
            'ECDHE-ECDSA-AES128-GCM-SHA256',
            'ECDHE-RSA-AES256-GCM-SHA384',
            'ECDHE-ECDSA-AES256-GCM-SHA384',
            'DHE-RSA-AES128-GCM-SHA256',
            'DHE-DSS-AES128-GCM-SHA256',
            'kEDH+AESGCM',
            'ECDHE-RSA-AES128-SHA256',
            'ECDHE-ECDSA-AES128-SHA256',
            'ECDHE-RSA-AES128-SHA',
            'ECDHE-ECDSA-AES128-SHA',
            'ECDHE-RSA-AES256-SHA384',
            'ECDHE-ECDSA-AES256-SHA384',
            'ECDHE-RSA-AES256-SHA',
            'ECDHE-ECDSA-AES256-SHA',
            'DHE-RSA-AES128-SHA256',
            'DHE-RSA-AES128-SHA',
            'DHE-DSS-AES128-SHA256',
            'DHE-RSA-AES256-SHA256',
            'DHE-DSS-AES256-SHA',
            'DHE-RSA-AES256-SHA',
            'AES128-GCM-SHA256',
            'AES256-GCM-SHA384',
            'AES128-SHA256',
            'AES256-SHA256',
            'AES128-SHA',
            'AES256-SHA',
            'AES',
            'CAMELLIA',
            'DES-CBC3-SHA',
            '!aNULL',
            '!eNULL',
            '!EXPORT',
            '!DES',
            '!RC4',
            '!MD5',
            '!PSK',
            '!aECDH',
            '!EDH-DSS-DES-CBC3-SHA',
            '!EDH-RSA-DES-CBC3-SHA',
            '!KRB5-DES-CBC3-SHA',
            '!ADH'
        ));

        $options = array(
            'ssl' => array(
                'ciphers' => $ciphers,
                'verify_peer' => true,
                'verify_depth' => 7,
                'SNI_enabled' => true,
            )
        );

        if (!$cafile) {
            $cafile = CaBundle::getSystemCaRootBundlePath();
        }
        if (is_dir($cafile)) {
            $options['ssl']['capath'] = $cafile;
        } elseif ($cafile) {
            $options['ssl']['cafile'] = $cafile;
        } else {
            throw new RuntimeException('A valid cafile could not be located locally.');
        }

        if (version_compare(PHP_VERSION, '5.4.13') >= 0) {
            $options['ssl']['disable_compression'] = true;
        }

        return $options;
    }

    /**
     * Function copied from Composer\Util\StreamContextFactory::getContext
     *
     * This function is part of Composer.
     *
     * (c) Nils Adermann <naderman@naderman.de>
     *     Jordi Boggiano <j.boggiano@seld.be>
     *
     * @param string $url URL the context is to be used for
     *
     * @throws \RuntimeException If https proxy required and OpenSSL uninstalled
     *
     * @return resource Default context
     *
     * @final since 1.1.0
     */
    protected function getMergedStreamContext($url)
    {
        $options = $this->options;

        // See CVE-2016-5385, due to (emulation of) header copying with PHP web SAPIs into HTTP_* variables,
        // HTTP_PROXY can be set by an user to any value he wants by setting the Proxy header.
        // Mitigate the vulnerability by only allowing CLI SAPIs to use HTTP(S)_PROXY environment variables.
        if (PHP_SAPI === 'cli' || PHP_SAPI === 'phpdbg') {
            // Handle system proxy
            if (!empty($_SERVER['HTTP_PROXY']) || !empty($_SERVER['http_proxy'])) {
                // Some systems seem to rely on a lowercased version instead...
                $proxy = parse_url(!empty($_SERVER['http_proxy']) ? $_SERVER['http_proxy'] : $_SERVER['HTTP_PROXY']);
            }
        }

        if (!empty($proxy)) {
            $proxyURL = isset($proxy['scheme']) ? $proxy['scheme'].'://' : '';
            $proxyURL .= isset($proxy['host']) ? $proxy['host'] : '';

            if (isset($proxy['port'])) {
                $proxyURL .= ':'.$proxy['port'];
            } elseif ('http://' == substr($proxyURL, 0, 7)) {
                $proxyURL .= ':80';
            } elseif ('https://' == substr($proxyURL, 0, 8)) {
                $proxyURL .= ':443';
            }

            // http(s):// is not supported in proxy
            $proxyURL = str_replace(array('http://', 'https://'), array('tcp://', 'ssl://'), $proxyURL);

            if (0 === strpos($proxyURL, 'ssl:') && !extension_loaded('openssl')) {
                throw new RuntimeException('You must enable the openssl extension to use a proxy over https');
            }

            $options['http'] = array(
                'proxy' => $proxyURL,
            );

            // enabled request_fulluri unless it is explicitly disabled
            switch (parse_url($url, PHP_URL_SCHEME)) {
                case 'http': // default request_fulluri to true
                    $reqFullUriEnv = getenv('HTTP_PROXY_REQUEST_FULLURI');
                    if ($reqFullUriEnv === false || $reqFullUriEnv === '' || (strtolower($reqFullUriEnv) !== 'false' && (bool) $reqFullUriEnv)) {
                        $options['http']['request_fulluri'] = true;
                    }
                    break;
                case 'https': // default request_fulluri to true
                    $reqFullUriEnv = getenv('HTTPS_PROXY_REQUEST_FULLURI');
                    if ($reqFullUriEnv === false || $reqFullUriEnv === '' || (strtolower($reqFullUriEnv) !== 'false' && (bool) $reqFullUriEnv)) {
                        $options['http']['request_fulluri'] = true;
                    }
                    break;
            }


            if (isset($proxy['user'])) {
                $auth = urldecode($proxy['user']);
                if (isset($proxy['pass'])) {
                    $auth .= ':'.urldecode($proxy['pass']);
                }
                $auth = base64_encode($auth);

                $options['http']['header'] = "Proxy-Authorization: Basic {$auth}\r\n";
            }
        }

        return stream_context_create($options);
    }

    /**
     * @deprecated since 1.1.0 and will be removed in 2.0.0.
     */
    public static function getSystemCaRootBundlePath()
    {
        @trigger_error(
            'Deprecated since 1.1.0. Use `Composer\CaBundle\CaBundle::getSystemCaRootBundlePath()` instead.',
            E_USER_DEPRECATED
        );

        return CaBundle::getSystemCaRootBundlePath();
    }

    /**
     * @deprecated since 1.1.0 and will be removed in 2.0.0.
     */
    protected static function validateCaFile($contents)
    {
        // Assumes the CA is valid if PHP is vulnerable to
        // https://www.sektioneins.de/advisories/advisory-012013-php-openssl_x509_parse-memory-corruption-vulnerability.html
        if (!CaBundle::isOpensslParseSafe()) {
            return !empty($contents);
        }

        return (bool) openssl_x509_parse($contents);
    }
}
<?php
/**
 * Humbug
 *
 * @category   Humbug
 * @package    Humbug
 * @copyright  Copyright (c) 2015 PÃ¡draic Brady (http://blog.astrumfutura.com)
 * @license    https://github.com/padraic/phar-updater/blob/master/LICENSE New BSD License
 *
 * This class is partially patterned after Composer's self-update.
 */

namespace Humbug\SelfUpdate;

use Humbug\SelfUpdate\Exception\RuntimeException;
use Humbug\SelfUpdate\Exception\InvalidArgumentException;
use Humbug\SelfUpdate\Exception\FilesystemException;
use Humbug\SelfUpdate\Exception\HttpRequestException;
use Humbug\SelfUpdate\Exception\NoSignatureException;
use Humbug\SelfUpdate\Strategy\StrategyInterface;
use Humbug\SelfUpdate\Strategy\ShaStrategy;
use Humbug\SelfUpdate\Strategy\GithubStrategy;

class Updater
{

    const STRATEGY_SHA1 = 'sha1';

    const STRATEGY_GITHUB = 'github';

    /**
     * @var StrategyInterface
     */
    protected $strategy;

    /**
     * @var string
     */
    protected $localPharFile;

    /**
     * @var string
     */
    protected $localPharFileBasename;

    /**
     * @var string
     */
    protected $localPubKeyFile;

    /**
     * @var bool
     */
    protected $hasPubKey;

    /**
     * @var string
     */
    protected $tempDirectory;

    /**
     * @var string
     */
    protected $newVersion;

    /**
     * @var string
     */
    protected $oldVersion;

    /**
     * @var string
     */
    protected $backupExtension = '-old.phar';

    /**
     * @var string
     */
    protected $backupPath;

    /**
     * @var string
     */
    protected $restorePath;

    /**
     * @var bool
     */
    protected $newVersionAvailable;

    /**
     * Constructor
     *
     * @param string $localPharFile
     * @param bool $hasPubKey
     * @param string $strategy
     */
    public function __construct($localPharFile = null, $hasPubKey = true, $strategy = self::STRATEGY_SHA1)
    {
        ini_set('phar.require_hash', 1);
        $this->setLocalPharFile($localPharFile);
        if (!is_bool($hasPubKey)) {
            throw new InvalidArgumentException(
                'Constructor parameter $hasPubKey must be boolean or null.'
            );
        } else {
            $this->hasPubKey = $hasPubKey;
        }
        if ($this->hasPubKey) {
            $this->setLocalPubKeyFile();
        }
        $this->setTempDirectory();
        $this->setStrategy($strategy);
    }

    /**
     * Check for update
     *
     * @return bool
     */
    public function hasUpdate()
    {
        $this->newVersionAvailable = $this->newVersionAvailable();
        return $this->newVersionAvailable;
    }

    /**
     * Perform an update
     *
     * @return bool
     */
    public function update()
    {
        if ($this->newVersionAvailable === false
        || (!is_bool($this->newVersionAvailable) && !$this->hasUpdate())) {
            return false;
        }
        $this->backupPhar();
        $this->downloadPhar();
        $this->replacePhar();
        return true;
    }

    /**
     * Perform an rollback to previous version
     *
     * @return bool
     */
    public function rollback()
    {
        if (!$this->restorePhar()) {
            return false;
        }
        return true;
    }

    /**
     * @param string $strategy
     */
    public function setStrategy($strategy)
    {
        switch ($strategy) {
            case self::STRATEGY_GITHUB:
                $this->strategy = new GithubStrategy;
                break;

            default:
                $this->strategy = new ShaStrategy;
                break;
        }
    }

    public function setStrategyObject(StrategyInterface $strategy)
    {
        $this->strategy = $strategy;
    }

    public function getStrategy()
    {
        return $this->strategy;
    }

    /**
     * Set backup extension for old phar versions
     *
     * @param string $extension
     */
    public function setBackupExtension($extension)
    {
        $this->backupExtension = $extension;
    }

    /**
     * Get backup extension for old phar versions
     *
     * @return string
     */
    public function getBackupExtension()
    {
        return $this->backupExtension;
    }

    public function getLocalPharFile()
    {
        return $this->localPharFile;
    }

    public function getLocalPharFileBasename()
    {
        return $this->localPharFileBasename;
    }

    public function getLocalPubKeyFile()
    {
        return $this->localPubKeyFile;
    }

    public function getTempDirectory()
    {
        return $this->tempDirectory;
    }

    public function getTempPharFile()
    {
        return $this->getTempDirectory()
            . '/'
            . sprintf('%s.phar.temp', $this->getLocalPharFileBasename());
    }

    public function getNewVersion()
    {
        return $this->newVersion;
    }

    public function getOldVersion()
    {
        return $this->oldVersion;
    }

    /**
     * Set backup path for old phar versions
     *
     * @param string $filePath
     */
    public function setBackupPath($filePath)
    {
        $path = realpath(dirname($filePath));
        if (!is_dir($path)) {
            throw new FilesystemException(sprintf(
                'The backup directory does not exist: %s.', $path
            ));
        }
        if (!is_writable($path)) {
            throw new FilesystemException(sprintf(
                'The backup directory is not writeable: %s.', $path
            ));
        }
        $this->backupPath = $filePath;
    }

    /**
     * Get backup path for old phar versions
     *
     * @return string
     */
    public function getBackupPath()
    {
        return $this->backupPath;
    }

    /**
     * Set path for the backup phar to rollback/restore from
     *
     * @param string $filePath
     */
    public function setRestorePath($filePath)
    {
        $path = realpath(dirname($filePath));
        if (!file_exists($path)) {
            throw new FilesystemException(sprintf(
                'The restore phar does not exist: %s.', $path
            ));
        }
        if (!is_readable($path)) {
            throw new FilesystemException(sprintf(
                'The restore file is not readable: %s.', $path
            ));
        }
        $this->restorePath = $filePath;
    }

    /**
     * Get path for the backup phar to rollback/restore from
     *
     * @return string
     */
    public function getRestorePath()
    {
        return $this->restorePath;
    }

    public function throwRuntimeException($errno, $errstr)
    {
        if (E_USER_DEPRECATED === $errno) {
            return;
        }

        throw new RuntimeException($errstr);
    }

    public function throwHttpRequestException($errno, $errstr)
    {
        if (E_USER_DEPRECATED === $errno) {
            return;
        }

        throw new HttpRequestException($errstr);
    }

    protected function hasPubKey()
    {
        return $this->hasPubKey;
    }

    protected function newVersionAvailable()
    {
        $this->newVersion = $this->strategy->getCurrentRemoteVersion($this);
        $this->oldVersion = $this->strategy->getCurrentLocalVersion($this);

        if (!empty($this->newVersion) && ($this->newVersion !== $this->oldVersion)) {
            return true;
        }
        return false;
    }

    protected function backupPhar()
    {
        $result = copy($this->getLocalPharFile(), $this->getBackupPharFile());
        if ($result === false) {
            $this->cleanupAfterError();
            throw new FilesystemException(sprintf(
                'Unable to backup %s to %s.',
                $this->getLocalPharFile(),
                $this->getBackupPharFile()
            ));
        }
    }

    protected function downloadPhar()
    {
        $this->strategy->download($this);

        if (!file_exists($this->getTempPharFile())) {
            throw new FilesystemException(
                'Creation of download file failed.'
            );
        }

        if ($this->getStrategy() instanceof ShaStrategy) {
            $tmpVersion = sha1_file($this->getTempPharFile());
            if ($tmpVersion !== $this->getNewVersion()) {
                $this->cleanupAfterError();
                throw new HttpRequestException(sprintf(
                    'Download file appears to be corrupted or outdated. The file '
                        . 'received does not have the expected SHA-1 hash: %s.',
                    $this->getNewVersion()
                ));
            }
        }

        try {
            $this->validatePhar($this->getTempPharFile());
        } catch (\Exception $e) {
            restore_error_handler();
            $this->cleanupAfterError();
            throw $e;
        }
    }

    protected function replacePhar()
    {
        rename($this->getTempPharFile(), $this->getLocalPharFile());
    }

    protected function restorePhar()
    {
        $backup = $this->getRestorePharFile();
        if (!file_exists($backup)) {
            throw new RuntimeException(sprintf(
                'The backup file does not exist: %s.', $backup
            ));
        }
        $this->validatePhar($backup);
        return rename($backup, $this->getLocalPharFile());
    }

    protected function getBackupPharFile()
    {
        if (null !== $this->getBackupPath()) {
            return $this->getBackupPath();
        }
        return $this->getTempDirectory()
            . '/'
            . sprintf('%s%s', $this->getLocalPharFileBasename(), $this->getBackupExtension());
    }

    protected function getRestorePharFile()
    {
        if (null !== $this->getRestorePath()) {
            return $this->getRestorePath();
        }
        return $this->getTempDirectory()
            . '/'
            . sprintf('%s%s', $this->getLocalPharFileBasename(), $this->getBackupExtension()
        );
    }

    protected function getTempPubKeyFile()
    {
        return $this->getTempDirectory()
            . '/'
            . sprintf('%s.phar.temp.pubkey', $this->getLocalPharFileBasename());
    }

    protected function setLocalPharFile($localPharFile)
    {
        if (!is_null($localPharFile)) {
            $localPharFile = realpath($localPharFile);
        } else {
            $localPharFile = realpath($_SERVER['argv'][0]) ?: $_SERVER['argv'][0];
        }
        if (!file_exists($localPharFile)) {
            throw new RuntimeException(sprintf(
                'The set phar file does not exist: %s.', $localPharFile
            ));
        }
        if (!is_writable($localPharFile)) {
            throw new FilesystemException(sprintf(
                'The current phar file is not writeable and cannot be replaced: %s.',
                $localPharFile
            ));
        }
        $this->localPharFile = $localPharFile;
        $this->localPharFileBasename = basename($localPharFile, '.phar');
    }

    protected function setLocalPubKeyFile()
    {
        $localPubKeyFile = $this->getLocalPharFile() . '.pubkey';
        if (!file_exists($localPubKeyFile)) {
            throw new RuntimeException(sprintf(
                'The phar pubkey file does not exist: %s.', $localPubKeyFile
            ));
        }
        $this->localPubKeyFile = $localPubKeyFile;
    }

    protected function setTempDirectory()
    {
        $tempDirectory = dirname($this->getLocalPharFile());
        if (!is_writable($tempDirectory)) {
            throw new FilesystemException(sprintf(
                'The directory is not writeable: %s.', $tempDirectory
            ));
        }
        $this->tempDirectory = $tempDirectory;
    }

    protected function validatePhar($phar)
    {
        $phar = realpath($phar);
        if ($this->hasPubKey()) {
            copy($this->getLocalPubKeyFile(), $phar . '.pubkey');
        }
        chmod($phar, fileperms($this->getLocalPharFile()));
        /** Switch invalid key errors to RuntimeExceptions */
        set_error_handler(array($this, 'throwRuntimeException'));
        $phar = new \Phar($phar);
        $signature = $phar->getSignature();
        if ($this->hasPubKey() && strtolower($signature['hash_type']) !== 'openssl') {
            throw new NoSignatureException(
                'The downloaded phar file has no OpenSSL signature.'
            );
        }
        restore_error_handler();
        if ($this->hasPubKey()) {
            @unlink($phar . '.pubkey');
        }
        unset($phar);
    }

    protected function cleanupAfterError()
    {
        //@unlink($this->getBackupPharFile());
        @unlink($this->getTempPharFile());
        @unlink($this->getTempPubKeyFile());
    }
}
<?php
/**
 * Humbug
 *
 * @category   Humbug
 * @package    Humbug
 * @copyright  Copyright (c) 2015 PÃ¡draic Brady (http://blog.astrumfutura.com)
 * @license    https://github.com/padraic/humbug/blob/master/LICENSE New BSD License
 */

namespace Humbug\SelfUpdate\Exception;

class FilesystemException extends RuntimeException
{
}
<?php
/**
 * Humbug
 *
 * @category   Humbug
 * @package    Humbug
 * @copyright  Copyright (c) 2015 PÃ¡draic Brady (http://blog.astrumfutura.com)
 * @license    https://github.com/padraic/humbug/blob/master/LICENSE New BSD License
 */

namespace Humbug\SelfUpdate\Exception;

class HttpRequestException extends RuntimeException
{
}
<?php
/**
 * Humbug
 *
 * @category   Humbug
 * @package    Humbug
 * @copyright  Copyright (c) 2015 PÃ¡draic Brady (http://blog.astrumfutura.com)
 * @license    https://github.com/padraic/humbug/blob/master/LICENSE New BSD License
 */

namespace Humbug\SelfUpdate\Exception;

class JsonParsingException extends RuntimeException
{
}
<?php
/**
 * Humbug
 *
 * @category   Humbug
 * @package    Humbug
 * @copyright  Copyright (c) 2015 PÃ¡draic Brady (http://blog.astrumfutura.com)
 * @license    https://github.com/padraic/humbug/blob/master/LICENSE New BSD License
 */

namespace Humbug\SelfUpdate\Exception;

interface ExceptionInterface
{
}
<?php
/**
 * Humbug
 *
 * @category   Humbug
 * @package    Humbug
 * @copyright  Copyright (c) 2015 PÃ¡draic Brady (http://blog.astrumfutura.com)
 * @license    https://github.com/padraic/humbug/blob/master/LICENSE New BSD License
 */

namespace Humbug\SelfUpdate\Exception;

class RuntimeException extends \RuntimeException implements ExceptionInterface
{
}
<?php
/**
 * Humbug
 *
 * @category   Humbug
 * @package    Humbug
 * @copyright  Copyright (c) 2015 PÃ¡draic Brady (http://blog.astrumfutura.com)
 * @license    https://github.com/padraic/humbug/blob/master/LICENSE New BSD License
 */

namespace Humbug\SelfUpdate\Exception;

class NoSignatureException extends RuntimeException
{
}
<?php
/**
 * Humbug
 *
 * @category   Humbug
 * @package    Humbug
 * @copyright  Copyright (c) 2015 PÃ¡draic Brady (http://blog.astrumfutura.com)
 * @license    https://github.com/padraic/humbug/blob/master/LICENSE New BSD License
 */

namespace Humbug\SelfUpdate\Exception;

class InvalidArgumentException extends \RuntimeException implements ExceptionInterface
{
}
<?php
/**
 * Humbug
 *
 * @category   Humbug
 * @package    Humbug
 * @copyright  Copyright (c) 2015 PÃ¡draic Brady (http://blog.astrumfutura.com)
 * @license    https://github.com/padraic/phar-updater/blob/master/LICENSE New BSD License
 *
 * This class is partially patterned after Composer's version parser.
 */

namespace Humbug\SelfUpdate;

class VersionParser
{

    /**
     * @var array
     */
    private $versions;

    /**
     * @var string
     */
    private $modifier = '[._-]?(?:(stable|beta|b|RC|alpha|a|patch|pl|p)(?:[.-]?(\d+))?)?([.-]?dev)?';

    /**
     * @param array $versions
     */
    public function __construct(array $versions = array())
    {
        $this->versions = $versions;
    }

    /**
     * Get the most recent stable numbered version from versions passed to
     * constructor (if any)
     *
     * @return string
     */
    public function getMostRecentStable()
    {
        return $this->selectRecentStable();
    }

    /**
     * Get the most recent unstable numbered version from versions passed to
     * constructor (if any)
     *
     * @return string
     */
    public function getMostRecentUnStable()
    {
        return $this->selectRecentUnstable();
    }

    /**
     * Get the most recent stable or unstable numbered version from versions passed to
     * constructor (if any)
     *
     * @return string
     */
    public function getMostRecentAll()
    {
        return $this->selectRecentAll();
    }

    /**
     * Checks if given version string represents a stable numbered version
     *
     * @param string $version
     * @return bool
     */
    public function isStable($version)
    {
        return $this->stable($version);
    }

    /**
     * Checks if given version string represents a 'pre-release' version, i.e.
     * it's unstable but not development level.
     *
     * @param string $version
     * @return bool
     */
    public function isPreRelease($version)
    {
        return !$this->stable($version) && !$this->development($version);
    }

    /**
     * Checks if given version string represents an unstable or dev-level
     * numbered version
     *
     * @param string $version
     * @return bool
     */
    public function isUnstable($version)
    {
        return !$this->stable($version);
    }

    /**
     * Checks if given version string represents a dev-level numbered version
     *
     * @param string $version
     * @return bool
     */
    public function isDevelopment($version)
    {
        return $this->development($version);
    }

    private function selectRecentStable()
    {
        $candidates = array();
        foreach ($this->versions as $version) {
            if (!$this->stable($version)) {
                continue;
            }
            $candidates[] = $version;
        }
        if (empty($candidates)) {
            return false;
        }
        return $this->findMostRecent($candidates);
    }

    private function selectRecentUnstable()
    {
        $candidates = array();
        foreach ($this->versions as $version) {
            if ($this->stable($version) || $this->development($version)) {
                continue;
            }
            $candidates[] = $version;
        }
        if (empty($candidates)) {
            return false;
        }
        return $this->findMostRecent($candidates);
    }

    private function selectRecentAll()
    {
        $candidates = array();
        foreach ($this->versions as $version) {
            if ($this->development($version)) {
                continue;
            }
            $candidates[] = $version;
        }
        if (empty($candidates)) {
            return false;
        }
        return $this->findMostRecent($candidates);
    }

    private function findMostRecent(array $candidates)
    {
        $candidate = null;
        $tracker = null;
        foreach ($candidates as $version) {
            if (version_compare($candidate, $version, '<')) {
                $candidate = $version;
            }
        }
        return $candidate;
    }

    private function stable($version)
    {
        $version = preg_replace('{#.+$}i', '', $version);
        if ($this->development($version)) {
            return false;
        }
        preg_match('{'.$this->modifier.'$}i', strtolower($version), $match);
        if (!empty($match[3])) {
            return false;
        }
        if (!empty($match[1])) {
            if ('beta' === $match[1] || 'b' === $match[1]
            || 'alpha' === $match[1] || 'a' === $match[1]
            || 'rc' === $match[1]) {
                return false;
            }
        }
        return true;
    }

    private function development($version)
    {
        if ('dev-' === substr($version, 0, 4) || '-dev' === substr($version, -4)) {
            return true;
        }
        if (1 == preg_match("/-\d+-[a-z0-9]{8,}$/", $version)) {
            return true;
        }
        return false;
    }
}
<?php
/**
 * Humbug
 *
 * @category   Humbug
 * @package    Humbug
 * @copyright  Copyright (c) 2015 PÃ¡draic Brady (http://blog.astrumfutura.com)
 * @license    https://github.com/padraic/phar-updater/blob/master/LICENSE New BSD License
 *
 * This class is partially patterned after Composer's self-update.
 */

namespace Humbug\SelfUpdate\Strategy;

use Humbug\SelfUpdate\Updater;
use Humbug\SelfUpdate\Exception\HttpRequestException;
use Humbug\SelfUpdate\Exception\InvalidArgumentException;

class ShaStrategy implements StrategyInterface
{

    /**
     * @var string
     */
    protected $versionUrl;

    /**
     * @var string
     */
    protected $pharUrl;

    /**
     * Download the remote Phar file.
     *
     * @param Updater $updater
     * @return void
     */
    public function download(Updater $updater)
    {
        /** Switch remote request errors to HttpRequestExceptions */
        set_error_handler(array($updater, 'throwHttpRequestException'));
        $result = humbug_get_contents($this->getPharUrl());
        restore_error_handler();
        if (false === $result) {
            throw new HttpRequestException(sprintf(
                'Request to URL failed: %s', $this->getPharUrl()
            ));
        }

        file_put_contents($updater->getTempPharFile(), $result);
    }

    /**
     * Retrieve the current version available remotely.
     *
     * @param Updater $updater
     * @return string|bool
     */
    public function getCurrentRemoteVersion(Updater $updater)
    {
        /** Switch remote request errors to HttpRequestExceptions */
        set_error_handler(array($updater, 'throwHttpRequestException'));
        $version = humbug_get_contents($this->getVersionUrl());
        restore_error_handler();
        if (false === $version) {
            throw new HttpRequestException(sprintf(
                'Request to URL failed: %s', $this->getVersionUrl()
            ));
        }
        if (empty($version)) {
            throw new HttpRequestException(
                'Version request returned empty response.'
            );
        }
        if (!preg_match('%^[a-z0-9]{40}%', $version, $matches)) {
            throw new HttpRequestException(
                'Version request returned incorrectly formatted response.'
            );
        }

        return $matches[0];
    }

    /**
     * Retrieve the current version of the local phar file.
     *
     * @param Updater $updater
     * @return string
     */
    public function getCurrentLocalVersion(Updater $updater)
    {
        return sha1_file($updater->getLocalPharFile());
    }

    /**
     * Set URL to phar file
     *
     * @param string $url
     */
    public function setPharUrl($url)
    {
        if (!$this->validateAllowedUrl($url)) {
            throw new InvalidArgumentException(
                sprintf('Invalid url passed as argument: %s.', $url)
            );
        }
        $this->pharUrl = $url;
    }

    /**
     * Get URL for phar file
     *
     * @return string
     */
    public function getPharUrl()
    {
        return $this->pharUrl;
    }

    /**
     * Set URL to version file
     *
     * @param string $url
     */
    public function setVersionUrl($url)
    {
        if (!$this->validateAllowedUrl($url)) {
            throw new InvalidArgumentException(
                sprintf('Invalid url passed as argument: %s.', $url)
            );
        }
        $this->versionUrl = $url;
    }

    /**
     * Get URL for version file
     *
     * @return string
     */
    public function getVersionUrl()
    {
        return $this->versionUrl;
    }

    protected function validateAllowedUrl($url)
    {
        if (filter_var($url, FILTER_VALIDATE_URL)
        && in_array(parse_url($url, PHP_URL_SCHEME), array('http', 'https', 'file'))) {
            return true;
        }
        return false;
    }
}
<?php
/**
 * Humbug
 *
 * @category   Humbug
 * @package    Humbug
 * @copyright  Copyright (c) 2015 PÃ¡draic Brady (http://blog.astrumfutura.com)
 * @license    https://github.com/padraic/phar-updater/blob/master/LICENSE New BSD License
 *
 * This class is partially patterned after Composer's self-update.
 */

namespace Humbug\SelfUpdate\Strategy;

use Humbug\SelfUpdate\Updater;
use Humbug\SelfUpdate\VersionParser;
use Humbug\SelfUpdate\Exception\HttpRequestException;
use Humbug\SelfUpdate\Exception\InvalidArgumentException;
use Humbug\SelfUpdate\Exception\JsonParsingException;

class GithubStrategy implements StrategyInterface
{
    const API_URL = 'https://packagist.org/p/%s.json';

    const STABLE = 'stable';

    const UNSTABLE = 'unstable';

    const ANY = 'any';

    /**
     * @var string
     */
    private $localVersion;

    /**
     * @var string
     */
    private $remoteVersion;

    /**
     * @var string
     */
    private $remoteUrl;

    /**
     * @var string
     */
    private $pharName;

    /**
     * @var string
     */
    private $packageName;

    /**
     * @var string
     */
    private $stability = self::STABLE;

    /**
     * Download the remote Phar file.
     *
     * @param Updater $updater
     * @return void
     */
    public function download(Updater $updater)
    {
        /** Switch remote request errors to HttpRequestExceptions */
        set_error_handler(array($updater, 'throwHttpRequestException'));
        $result = humbug_get_contents($this->remoteUrl);
        restore_error_handler();
        if (false === $result) {
            throw new HttpRequestException(sprintf(
                'Request to URL failed: %s', $this->remoteUrl
            ));
        }

        file_put_contents($updater->getTempPharFile(), $result);
    }

    /**
     * Retrieve the current version available remotely.
     *
     * @param Updater $updater
     * @return string|bool
     */
    public function getCurrentRemoteVersion(Updater $updater)
    {
        /** Switch remote request errors to HttpRequestExceptions */
        set_error_handler(array($updater, 'throwHttpRequestException'));
        $packageUrl = $this->getApiUrl();
        $package = json_decode(humbug_get_contents($packageUrl), true);
        restore_error_handler();

        if (null === $package || json_last_error() !== JSON_ERROR_NONE) {
            throw new JsonParsingException(
                'Error parsing JSON package data'
                . (function_exists('json_last_error_msg') ? ': ' . json_last_error_msg() : '')
            );
        }

        $versions = array_keys($package['packages'][$this->getPackageName()]);
        $versionParser = new VersionParser($versions);
        if ($this->getStability() === self::STABLE) {
            $this->remoteVersion = $versionParser->getMostRecentStable();
        } elseif ($this->getStability() === self::UNSTABLE) {
            $this->remoteVersion = $versionParser->getMostRecentUnstable();
        } else {
            $this->remoteVersion = $versionParser->getMostRecentAll();
        }

        /**
         * Setup remote URL if there's an actual version to download
         */
        if (!empty($this->remoteVersion)) {
            $this->remoteUrl = $this->getDownloadUrl($package);
        }

        return $this->remoteVersion;
    }

    /**
     * Retrieve the current version of the local phar file.
     *
     * @param Updater $updater
     * @return string
     */
    public function getCurrentLocalVersion(Updater $updater)
    {
        return $this->localVersion;
    }

    /**
     * Set version string of the local phar
     *
     * @param string $version
     */
    public function setCurrentLocalVersion($version)
    {
        $this->localVersion = $version;
    }

    /**
     * Set Package name
     *
     * @param string $name
     */
    public function setPackageName($name)
    {
        $this->packageName = $name;
    }

    /**
     * Get Package name
     *
     * @return string
     */
    public function getPackageName()
    {
        return $this->packageName;
    }

    /**
     * Set phar file's name
     *
     * @param string $name
     */
    public function setPharName($name)
    {
        $this->pharName = $name;
    }

    /**
     * Get phar file's name
     *
     * @return string
     */
    public function getPharName()
    {
        return $this->pharName;
    }

    /**
     * Set target stability
     *
     * @param string $stability
     */
    public function setStability($stability)
    {
        if ($stability !== self::STABLE && $stability !== self::UNSTABLE && $stability !== self::ANY) {
            throw new InvalidArgumentException(
                'Invalid stability value. Must be one of "stable", "unstable" or "any".'
            );
        }
        $this->stability = $stability;
    }

    /**
     * Get target stability
     *
     * @return string
     */
    public function getStability()
    {
        return $this->stability;
    }

    protected function getApiUrl()
    {
        return sprintf(self::API_URL, $this->getPackageName());
    }

    protected function getDownloadUrl(array $package)
    {
        $baseUrl = preg_replace(
            '{\.git$}',
            '',
            $package['packages'][$this->getPackageName()][$this->remoteVersion]['source']['url']
        );
        $downloadUrl = sprintf(
            '%s/releases/download/%s/%s',
            $baseUrl,
            $this->remoteVersion,
            $this->getPharName()
        );
        return $downloadUrl;
    }
}
<?php
/**
 * Humbug
 *
 * @category   Humbug
 * @package    Humbug
 * @copyright  Copyright (c) 2015 PÃ¡draic Brady (http://blog.astrumfutura.com)
 * @license    https://github.com/padraic/phar-updater/blob/master/LICENSE New BSD License
 *
 * This is partially patterned after Composer's self-update.
 */

namespace Humbug\SelfUpdate\Strategy;

use Humbug\SelfUpdate\Updater;

interface StrategyInterface
{

    /**
     * Download the remote Phar file.
     *
     * @param Updater $updater
     * @return void
     */
    public function download(Updater $updater);

    /**
     * Retrieve the current version available remotely.
     *
     * @param Updater $updater
     * @return string|bool
     */
    public function getCurrentRemoteVersion(Updater $updater);

    /**
     * Retrieve the current version of the local phar file.
     *
     * @param Updater $updater
     * @return string
     */
    public function getCurrentLocalVersion(Updater $updater);
}
<?php

namespace Invoker\ParameterResolver;

use ReflectionFunctionAbstract;

/**
 * Simply returns all the values of the $providedParameters array that are
 * indexed by the parameter position (i.e. a number).
 *
 * E.g. `->call($callable, ['foo', 'bar'])` will simply resolve the parameters
 * to `['foo', 'bar']`.
 *
 * Parameters that are not indexed by a number (i.e. parameter position)
 * will be ignored.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class NumericArrayResolver implements ParameterResolver
{
    public function getParameters(
        ReflectionFunctionAbstract $reflection,
        array $providedParameters,
        array $resolvedParameters
    ) {
        // Skip parameters already resolved
        if (! empty($resolvedParameters)) {
            $providedParameters = array_diff_key($providedParameters, $resolvedParameters);
        }

        foreach ($providedParameters as $key => $value) {
            if (is_int($key)) {
                $resolvedParameters[$key] = $value;
            }
        }

        return $resolvedParameters;
    }
}
<?php

namespace Invoker\ParameterResolver;

use ReflectionException;
use ReflectionFunctionAbstract;

/**
 * Finds the default value for a parameter, *if it exists*.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class DefaultValueResolver implements ParameterResolver
{
    public function getParameters(
        ReflectionFunctionAbstract $reflection,
        array $providedParameters,
        array $resolvedParameters
    ) {
        $parameters = $reflection->getParameters();

        // Skip parameters already resolved
        if (! empty($resolvedParameters)) {
            $parameters = array_diff_key($parameters, $resolvedParameters);
        }

        foreach ($parameters as $index => $parameter) {
            /** @var \ReflectionParameter $parameter */
            if ($parameter->isOptional()) {
                try {
                    $resolvedParameters[$index] = $parameter->getDefaultValue();
                } catch (ReflectionException $e) {
                    // Can't get default values from PHP internal classes and functions
                }
            }
        }

        return $resolvedParameters;
    }
}
<?php

namespace Invoker\ParameterResolver;

use ReflectionFunctionAbstract;

/**
 * Dispatches the call to other resolvers until all parameters are resolved.
 *
 * Chain of responsibility pattern.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ResolverChain implements ParameterResolver
{
    /**
     * @var ParameterResolver[]
     */
    private $resolvers = array();

    public function __construct(array $resolvers = array())
    {
        $this->resolvers = $resolvers;
    }

    public function getParameters(
        ReflectionFunctionAbstract $reflection,
        array $providedParameters,
        array $resolvedParameters
    ) {
        $reflectionParameters = $reflection->getParameters();

        foreach ($this->resolvers as $resolver) {
            $resolvedParameters = $resolver->getParameters(
                $reflection,
                $providedParameters,
                $resolvedParameters
            );

            $diff = array_diff_key($reflectionParameters, $resolvedParameters);
            if (empty($diff)) {
                // Stop traversing: all parameters are resolved
                return $resolvedParameters;
            }
        }

        return $resolvedParameters;
    }

    /**
     * Push a parameter resolver after the ones already registered.
     *
     * @param ParameterResolver $resolver
     */
    public function appendResolver(ParameterResolver $resolver)
    {
        $this->resolvers[] = $resolver;
    }

    /**
     * Insert a parameter resolver before the ones already registered.
     *
     * @param ParameterResolver $resolver
     */
    public function prependResolver(ParameterResolver $resolver)
    {
        array_unshift($this->resolvers, $resolver);
    }
}
<?php

namespace Invoker\ParameterResolver\Container;

use Interop\Container\ContainerInterface;
use Invoker\ParameterResolver\ParameterResolver;
use ReflectionFunctionAbstract;

/**
 * Inject entries from a DI container using the type-hints.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class TypeHintContainerResolver implements ParameterResolver
{
    /**
     * @var ContainerInterface
     */
    private $container;

    /**
     * @param ContainerInterface $container The container to get entries from.
     */
    public function __construct(ContainerInterface $container)
    {
        $this->container = $container;
    }

    public function getParameters(
        ReflectionFunctionAbstract $reflection,
        array $providedParameters,
        array $resolvedParameters
    ) {
        $parameters = $reflection->getParameters();

        // Skip parameters already resolved
        if (! empty($resolvedParameters)) {
            $parameters = array_diff_key($parameters, $resolvedParameters);
        }

        foreach ($parameters as $index => $parameter) {
            $parameterClass = $parameter->getClass();

            if ($parameterClass && $this->container->has($parameterClass->name)) {
                $resolvedParameters[$index] = $this->container->get($parameterClass->name);
            }
        }

        return $resolvedParameters;
    }
}
<?php

namespace Invoker\ParameterResolver\Container;

use Interop\Container\ContainerInterface;
use Invoker\ParameterResolver\ParameterResolver;
use ReflectionFunctionAbstract;

/**
 * Inject entries from a DI container using the parameter names.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ParameterNameContainerResolver implements ParameterResolver
{
    /**
     * @var ContainerInterface
     */
    private $container;

    /**
     * @param ContainerInterface $container The container to get entries from.
     */
    public function __construct(ContainerInterface $container)
    {
        $this->container = $container;
    }

    public function getParameters(
        ReflectionFunctionAbstract $reflection,
        array $providedParameters,
        array $resolvedParameters
    ) {
        $parameters = $reflection->getParameters();

        // Skip parameters already resolved
        if (! empty($resolvedParameters)) {
            $parameters = array_diff_key($parameters, $resolvedParameters);
        }

        foreach ($parameters as $index => $parameter) {
            $name = $parameter->name;

            if ($name && $this->container->has($name)) {
                $resolvedParameters[$index] = $this->container->get($name);
            }
        }

        return $resolvedParameters;
    }
}
<?php

namespace Invoker\ParameterResolver;

use ReflectionFunctionAbstract;

/**
 * Resolves the parameters to use to call the callable.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
interface ParameterResolver
{
    /**
     * Resolves the parameters to use to call the callable.
     *
     * `$resolvedParameters` contains parameters that have already been resolved.
     *
     * Each ParameterResolver must resolve parameters that are not already
     * in `$resolvedParameters`. That allows to chain multiple ParameterResolver.
     *
     * @param ReflectionFunctionAbstract $reflection Reflection object for the callable.
     * @param array $providedParameters Parameters provided by the caller.
     * @param array $resolvedParameters Parameters resolved (indexed by parameter position).
     *
     * @return array
     */
    public function getParameters(
        ReflectionFunctionAbstract $reflection,
        array $providedParameters,
        array $resolvedParameters
    );
}
<?php

namespace Invoker\ParameterResolver;

use Invoker\ParameterResolver\ParameterResolver;
use ReflectionFunctionAbstract;

/**
 * Inject entries using type-hints.
 *
 * Tries to match type-hints with the parameters provided.
 *
 * @author Felix Becker <f.becker@outlook.com>
 */
class TypeHintResolver implements ParameterResolver
{
    public function getParameters(
        ReflectionFunctionAbstract $reflection,
        array $providedParameters,
        array $resolvedParameters
    ) {
        $parameters = $reflection->getParameters();

        // Skip parameters already resolved
        if (! empty($resolvedParameters)) {
            $parameters = array_diff_key($parameters, $resolvedParameters);
        }

        foreach ($parameters as $index => $parameter) {
            $parameterClass = $parameter->getClass();

            if ($parameterClass && array_key_exists($parameterClass->name, $providedParameters)) {
                $resolvedParameters[$index] = $providedParameters[$parameterClass->name];
            }
        }

        return $resolvedParameters;
    }
}
<?php

namespace Invoker\ParameterResolver;

use ReflectionFunctionAbstract;

/**
 * Tries to map an associative array (string-indexed) to the parameter names.
 *
 * E.g. `->call($callable, ['foo' => 'bar'])` will inject the string `'bar'`
 * in the parameter named `$foo`.
 *
 * Parameters that are not indexed by a string are ignored.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class AssociativeArrayResolver implements ParameterResolver
{
    public function getParameters(
        ReflectionFunctionAbstract $reflection,
        array $providedParameters,
        array $resolvedParameters
    ) {
        $parameters = $reflection->getParameters();

        // Skip parameters already resolved
        if (! empty($resolvedParameters)) {
            $parameters = array_diff_key($parameters, $resolvedParameters);
        }

        foreach ($parameters as $index => $parameter) {
            if (array_key_exists($parameter->name, $providedParameters)) {
                $resolvedParameters[$index] = $providedParameters[$parameter->name];
            }
        }

        return $resolvedParameters;
    }
}
<?php

namespace Invoker;

use Interop\Container\ContainerInterface;
use Invoker\Exception\NotCallableException;
use Invoker\Exception\NotEnoughParametersException;
use Invoker\ParameterResolver\AssociativeArrayResolver;
use Invoker\ParameterResolver\DefaultValueResolver;
use Invoker\ParameterResolver\NumericArrayResolver;
use Invoker\ParameterResolver\ParameterResolver;
use Invoker\ParameterResolver\ResolverChain;
use Invoker\Reflection\CallableReflection;

/**
 * Invoke a callable.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class Invoker implements InvokerInterface
{
    /**
     * @var CallableResolver|null
     */
    private $callableResolver;

    /**
     * @var ParameterResolver
     */
    private $parameterResolver;

    /**
     * @var ContainerInterface|null
     */
    private $container;

    public function __construct(ParameterResolver $parameterResolver = null, ContainerInterface $container = null)
    {
        $this->parameterResolver = $parameterResolver ?: $this->createParameterResolver();
        $this->container = $container;

        if ($container) {
            $this->callableResolver = new CallableResolver($container);
        }
    }

    /**
     * {@inheritdoc}
     */
    public function call($callable, array $parameters = array())
    {
        if ($this->callableResolver) {
            $callable = $this->callableResolver->resolve($callable);
        }

        if (! is_callable($callable)) {
            throw new NotCallableException(sprintf(
                '%s is not a callable',
                is_object($callable) ? 'Instance of ' . get_class($callable) : var_export($callable, true)
            ));
        }

        $callableReflection = CallableReflection::create($callable);

        $args = $this->parameterResolver->getParameters($callableReflection, $parameters, array());

        // Sort by array key because call_user_func_array ignores numeric keys
        ksort($args);

        // Check all parameters are resolved
        $diff = array_diff_key($callableReflection->getParameters(), $args);
        if (! empty($diff)) {
            /** @var \ReflectionParameter $parameter */
            $parameter = reset($diff);
            throw new NotEnoughParametersException(sprintf(
                'Unable to invoke the callable because no value was given for parameter %d ($%s)',
                $parameter->getPosition() + 1,
                $parameter->name
            ));
        }

        return call_user_func_array($callable, $args);
    }

    /**
     * Create the default parameter resolver.
     *
     * @return ParameterResolver
     */
    private function createParameterResolver()
    {
        return new ResolverChain(array(
            new NumericArrayResolver,
            new AssociativeArrayResolver,
            new DefaultValueResolver,
        ));
    }

    /**
     * @return ParameterResolver By default it's a ResolverChain
     */
    public function getParameterResolver()
    {
        return $this->parameterResolver;
    }

    /**
     * @return ContainerInterface|null
     */
    public function getContainer()
    {
        return $this->container;
    }

    /**
     * @return CallableResolver|null Returns null if no container was given in the constructor.
     */
    public function getCallableResolver()
    {
        return $this->callableResolver;
    }
}
<?php

namespace Invoker;

use Invoker\Exception\InvocationException;
use Invoker\Exception\NotCallableException;
use Invoker\Exception\NotEnoughParametersException;

/**
 * Invoke a callable.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
interface InvokerInterface
{
    /**
     * Call the given function using the given parameters.
     *
     * @param callable $callable   Function to call.
     * @param array    $parameters Parameters to use.
     *
     * @return mixed Result of the function.
     *
     * @throws InvocationException Base exception class for all the sub-exceptions below.
     * @throws NotCallableException
     * @throws NotEnoughParametersException
     */
    public function call($callable, array $parameters = array());
}
<?php

namespace Invoker\Exception;

/**
 * The given callable is not actually callable.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class NotCallableException extends InvocationException
{
    /**
     * @param string $value
     * @param bool $containerEntry
     * @return self
     */
    public static function fromInvalidCallable($value, $containerEntry = false)
    {
        if (is_object($value)) {
            $message = sprintf('Instance of %s is not a callable', get_class($value));
        } elseif (is_array($value) && isset($value[0]) && isset($value[1])) {
            $class = is_object($value[0]) ? get_class($value[0]) : $value[0];
            $extra = method_exists($class, '__call') ? ' A __call() method exists but magic methods are not supported.' : '';
            $message = sprintf('%s::%s() is not a callable.%s', $class, $value[1], $extra);
        } else {
            if ($containerEntry) {
                $message = var_export($value, true) . ' is neither a callable nor a valid container entry';
            } else {
                $message = var_export($value, true) . ' is not a callable';
            }
        }

        return new self($message);
    }
}
<?php

namespace Invoker\Exception;

/**
 * Impossible to invoke the callable.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class InvocationException extends \Exception
{
}
<?php

namespace Invoker\Exception;

/**
 * Not enough parameters could be resolved to invoke the callable.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class NotEnoughParametersException extends InvocationException
{
}
<?php

namespace Invoker;

use Interop\Container\ContainerInterface;
use Interop\Container\Exception\NotFoundException;
use Invoker\Exception\NotCallableException;

/**
 * Resolves a callable from a container.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class CallableResolver
{
    /**
     * @var ContainerInterface
     */
    private $container;

    public function __construct(ContainerInterface $container)
    {
        $this->container = $container;
    }

    /**
     * Resolve the given callable into a real PHP callable.
     *
     * @param callable|string|array $callable
     *
     * @return callable Real PHP callable.
     *
     * @throws NotCallableException
     */
    public function resolve($callable)
    {
        if (is_string($callable) && strpos($callable, '::') !== false) {
            $callable = explode('::', $callable, 2);
        }

        $callable = $this->resolveFromContainer($callable);

        if (! is_callable($callable)) {
            throw NotCallableException::fromInvalidCallable($callable, true);
        }

        return $callable;
    }

    /**
     * @param callable|string|array $callable
     * @return callable
     * @throws NotCallableException
     */
    private function resolveFromContainer($callable)
    {
        // Shortcut for a very common use case
        if ($callable instanceof \Closure) {
            return $callable;
        }

        $isStaticCallToNonStaticMethod = false;

        // If it's already a callable there is nothing to do
        if (is_callable($callable)) {
            $isStaticCallToNonStaticMethod = $this->isStaticCallToNonStaticMethod($callable);
            if (! $isStaticCallToNonStaticMethod) {
                return $callable;
            }
        }

        // The callable is a container entry name
        if (is_string($callable)) {
            try {
                return $this->container->get($callable);
            } catch (NotFoundException $e) {
                throw NotCallableException::fromInvalidCallable($callable, true);
            }
        }

        // The callable is an array whose first item is a container entry name
        // e.g. ['some-container-entry', 'methodToCall']
        if (is_array($callable) && is_string($callable[0])) {
            try {
                // Replace the container entry name by the actual object
                $callable[0] = $this->container->get($callable[0]);
                return $callable;
            } catch (NotFoundException $e) {
                if ($isStaticCallToNonStaticMethod) {
                    throw new NotCallableException(sprintf(
                        'Cannot call %s::%s() because %s() is not a static method and "%s" is not a container entry',
                        $callable[0],
                        $callable[1],
                        $callable[1],
                        $callable[0]
                    ));
                }
                throw new NotCallableException(sprintf(
                    'Cannot call %s on %s because it is not a class nor a valid container entry',
                    $callable[1],
                    $callable[0]
                ));
            }
        }

        // Unrecognized stuff, we let it fail later
        return $callable;
    }

    /**
     * Check if the callable represents a static call to a non-static method.
     *
     * @param mixed $callable
     * @return bool
     */
    private function isStaticCallToNonStaticMethod($callable)
    {
        if (is_array($callable) && is_string($callable[0])) {
            list($class, $method) = $callable;
            $reflection = new \ReflectionMethod($class, $method);

            return ! $reflection->isStatic();
        }

        return false;
    }
}
<?php

namespace Invoker\Reflection;

use Invoker\Exception\NotCallableException;

/**
 * Create a reflection object from a callable.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class CallableReflection
{
    /**
     * @param callable $callable
     *
     * @return \ReflectionFunctionAbstract
     *
     * @throws NotCallableException
     *
     * TODO Use the `callable` type-hint once support for PHP 5.4 and up.
     */
    public static function create($callable)
    {
        // Closure
        if ($callable instanceof \Closure) {
            return new \ReflectionFunction($callable);
        }

        // Array callable
        if (is_array($callable)) {
            list($class, $method) = $callable;

            if (! method_exists($class, $method)) {
                throw NotCallableException::fromInvalidCallable($callable);
            }

            return new \ReflectionMethod($class, $method);
        }

        // Callable object (i.e. implementing __invoke())
        if (is_object($callable) && method_exists($callable, '__invoke')) {
            return new \ReflectionMethod($callable, '__invoke');
        }

        // Callable class (i.e. implementing __invoke())
        if (is_string($callable) && class_exists($callable) && method_exists($callable, '__invoke')) {
            return new \ReflectionMethod($callable, '__invoke');
        }

        // Standard function
        if (is_string($callable) && function_exists($callable)) {
            return new \ReflectionFunction($callable);
        }

        throw new NotCallableException(sprintf(
            '%s is not a callable',
            is_string($callable) ? $callable : 'Instance of ' . get_class($callable)
        ));
    }
}
<?php

namespace PhpDocReader\PhpParser;

use SplFileObject;

/**
 * Parses a file for "use" declarations.
 *
 * Class taken and adapted from doctrine/annotations to avoid pulling the whole package.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Christian Kaps <christian.kaps@mohiva.com>
 */
class UseStatementParser
{
    /**
     * @return array A list with use statements in the form (Alias => FQN).
     */
    public function parseUseStatements(\ReflectionClass $class)
    {
        if (false === $filename = $class->getFilename()) {
            return array();
        }

        $content = $this->getFileContent($filename, $class->getStartLine());

        if (null === $content) {
            return array();
        }

        $namespace = preg_quote($class->getNamespaceName());
        $content = preg_replace('/^.*?(\bnamespace\s+' . $namespace . '\s*[;{].*)$/s', '\\1', $content);
        $tokenizer = new TokenParser('<?php ' . $content);

        $statements = $tokenizer->parseUseStatements($class->getNamespaceName());

        return $statements;
    }

    /**
     * Gets the content of the file right up to the given line number.
     *
     * @param string  $filename   The name of the file to load.
     * @param integer $lineNumber The number of lines to read from file.
     *
     * @return string The content of the file.
     */
    private function getFileContent($filename, $lineNumber)
    {
        if ( ! is_file($filename)) {
            return null;
        }

        $content = '';
        $lineCnt = 0;
        $file = new SplFileObject($filename);
        while (!$file->eof()) {
            if ($lineCnt++ == $lineNumber) {
                break;
            }

            $content .= $file->fgets();
        }

        return $content;
    }
}
<?php

namespace PhpDocReader\PhpParser;

/**
 * Parses a file for namespaces/use/class declarations.
 *
 * Class taken and adapted from doctrine/annotations to avoid pulling the whole package.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Christian Kaps <christian.kaps@mohiva.com>
 */
class TokenParser
{
    /**
     * The token list.
     *
     * @var array
     */
    private $tokens;

    /**
     * The number of tokens.
     *
     * @var int
     */
    private $numTokens;

    /**
     * The current array pointer.
     *
     * @var int
     */
    private $pointer = 0;

    /**
     * @param string $contents
     */
    public function __construct($contents)
    {
        $this->tokens = token_get_all($contents);

        // The PHP parser sets internal compiler globals for certain things. Annoyingly, the last docblock comment it
        // saw gets stored in doc_comment. When it comes to compile the next thing to be include()d this stored
        // doc_comment becomes owned by the first thing the compiler sees in the file that it considers might have a
        // docblock. If the first thing in the file is a class without a doc block this would cause calls to
        // getDocBlock() on said class to return our long lost doc_comment. Argh.
        // To workaround, cause the parser to parse an empty docblock. Sure getDocBlock() will return this, but at least
        // it's harmless to us.
        token_get_all("<?php\n/**\n *\n */");

        $this->numTokens = count($this->tokens);
    }

    /**
     * Gets all use statements.
     *
     * @param string $namespaceName The namespace name of the reflected class.
     *
     * @return array A list with all found use statements.
     */
    public function parseUseStatements($namespaceName)
    {
        $statements = array();
        while (($token = $this->next())) {
            if ($token[0] === T_USE) {
                $statements = array_merge($statements, $this->parseUseStatement());
                continue;
            }
            if ($token[0] !== T_NAMESPACE || $this->parseNamespace() != $namespaceName) {
                continue;
            }

            // Get fresh array for new namespace. This is to prevent the parser to collect the use statements
            // for a previous namespace with the same name. This is the case if a namespace is defined twice
            // or if a namespace with the same name is commented out.
            $statements = array();
        }

        return $statements;
    }

    /**
     * Gets the next non whitespace and non comment token.
     *
     * @param boolean $docCommentIsComment If TRUE then a doc comment is considered a comment and skipped.
     *                                     If FALSE then only whitespace and normal comments are skipped.
     *
     * @return array|null The token if exists, null otherwise.
     */
    private function next($docCommentIsComment = true)
    {
        for ($i = $this->pointer; $i < $this->numTokens; $i++) {
            $this->pointer++;
            if ($this->tokens[$i][0] === T_WHITESPACE ||
                $this->tokens[$i][0] === T_COMMENT ||
                ($docCommentIsComment && $this->tokens[$i][0] === T_DOC_COMMENT)) {

                continue;
            }

            return $this->tokens[$i];
        }

        return null;
    }

    /**
     * Parses a single use statement.
     *
     * @return array A list with all found class names for a use statement.
     */
    private function parseUseStatement()
    {
        $class = '';
        $alias = '';
        $statements = array();
        $explicitAlias = false;
        while (($token = $this->next())) {
            $isNameToken = $token[0] === T_STRING || $token[0] === T_NS_SEPARATOR;
            if (!$explicitAlias && $isNameToken) {
                $class .= $token[1];
                $alias = $token[1];
            } elseif ($explicitAlias && $isNameToken) {
                $alias .= $token[1];
            } elseif ($token[0] === T_AS) {
                $explicitAlias = true;
                $alias = '';
            } elseif ($token === ',') {
                $statements[strtolower($alias)] = $class;
                $class = '';
                $alias = '';
                $explicitAlias = false;
            } elseif ($token === ';') {
                $statements[strtolower($alias)] = $class;
                break;
            } else {
                break;
            }
        }

        return $statements;
    }

    /**
     * Gets the namespace.
     *
     * @return string The found namespace.
     */
    private function parseNamespace()
    {
        $name = '';
        while (($token = $this->next()) && ($token[0] === T_STRING || $token[0] === T_NS_SEPARATOR)) {
            $name .= $token[1];
        }

        return $name;
    }
}
<?php

namespace PhpDocReader;

/**
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class AnnotationException extends \Exception
{
}
<?php

namespace PhpDocReader;

use PhpDocReader\PhpParser\UseStatementParser;
use ReflectionClass;
use ReflectionMethod;
use ReflectionParameter;
use ReflectionProperty;
use Reflector;

/**
 * PhpDoc reader
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class PhpDocReader
{
    /**
     * @var UseStatementParser
     */
    private $parser;

    private $ignoredTypes = array(
        'bool',
        'boolean',
        'string',
        'int',
        'integer',
        'float',
        'double',
        'array',
        'object',
        'callable',
        'resource',
        'mixed',
        'iterable',
    );

    /**
     * Enable or disable throwing errors when PhpDoc Errors occur (when parsing annotations)
     * 
     * @var bool
     */
    private $ignorePhpDocErrors;

    /**
     * 
     * @param bool $ignorePhpDocErrors
     */
    public function __construct($ignorePhpDocErrors = false)
    {
        $this->parser = new UseStatementParser();
        $this->ignorePhpDocErrors = $ignorePhpDocErrors;
    }

    /**
     * Parse the docblock of the property to get the class of the var annotation.
     *
     * @param ReflectionProperty $property
     *
     * @throws AnnotationException
     * @return string|null Type of the property (content of var annotation)
     *
     * @deprecated Use getPropertyClass instead.
     */
    public function getPropertyType(ReflectionProperty $property)
    {
        return $this->getPropertyClass($property);
    }

    /**
     * Parse the docblock of the property to get the class of the var annotation.
     *
     * @param ReflectionProperty $property
     *
     * @throws AnnotationException
     * @return string|null Type of the property (content of var annotation)
     */
    public function getPropertyClass(ReflectionProperty $property)
    {
        // Get the content of the @var annotation
        if (preg_match('/@var\s+([^\s]+)/', $property->getDocComment(), $matches)) {
            list(, $type) = $matches;
        } else {
            return null;
        }

        // Ignore primitive types
        if (in_array($type, $this->ignoredTypes)) {
            return null;
        }

        // Ignore types containing special characters ([], <> ...)
        if (! preg_match('/^[a-zA-Z0-9\\\\_]+$/', $type)) {
            return null;
        }

        $class = $property->getDeclaringClass();

        // If the class name is not fully qualified (i.e. doesn't start with a \)
        if ($type[0] !== '\\') {
            // Try to resolve the FQN using the class context
            $resolvedType = $this->tryResolveFqn($type, $class, $property);

            if (!$resolvedType && !$this->ignorePhpDocErrors) {
                throw new AnnotationException(sprintf(
                    'The @var annotation on %s::%s contains a non existent class "%s". '
                        . 'Did you maybe forget to add a "use" statement for this annotation?',
                    $class->name,
                    $property->getName(),
                    $type
                ));
            }
            
            $type = $resolvedType;
        }

        if (!$this->classExists($type) && !$this->ignorePhpDocErrors) {
            throw new AnnotationException(sprintf(
                'The @var annotation on %s::%s contains a non existent class "%s"',
                $class->name,
                $property->getName(),
                $type
            ));
        }

        // Remove the leading \ (FQN shouldn't contain it)
        $type = ltrim($type, '\\');

        return $type;
    }

    /**
     * Parse the docblock of the property to get the class of the param annotation.
     *
     * @param ReflectionParameter $parameter
     *
     * @throws AnnotationException
     * @return string|null Type of the property (content of var annotation)
     *
     * @deprecated Use getParameterClass instead.
     */
    public function getParameterType(ReflectionParameter $parameter)
    {
        return $this->getParameterClass($parameter);
    }

    /**
     * Parse the docblock of the property to get the class of the param annotation.
     *
     * @param ReflectionParameter $parameter
     *
     * @throws AnnotationException
     * @return string|null Type of the property (content of var annotation)
     */
    public function getParameterClass(ReflectionParameter $parameter)
    {
        // Use reflection
        $parameterClass = $parameter->getClass();
        if ($parameterClass !== null) {
            return $parameterClass->name;
        }

        $parameterName = $parameter->name;
        // Get the content of the @param annotation
        $method = $parameter->getDeclaringFunction();
        if (preg_match('/@param\s+([^\s]+)\s+\$' . $parameterName . '/', $method->getDocComment(), $matches)) {
            list(, $type) = $matches;
        } else {
            return null;
        }

        // Ignore primitive types
        if (in_array($type, $this->ignoredTypes)) {
            return null;
        }

        // Ignore types containing special characters ([], <> ...)
        if (! preg_match('/^[a-zA-Z0-9\\\\_]+$/', $type)) {
            return null;
        }

        $class = $parameter->getDeclaringClass();

        // If the class name is not fully qualified (i.e. doesn't start with a \)
        if ($type[0] !== '\\') {
            // Try to resolve the FQN using the class context
            $resolvedType = $this->tryResolveFqn($type, $class, $parameter);
         
            if (!$resolvedType && !$this->ignorePhpDocErrors) {
                throw new AnnotationException(sprintf(
                    'The @param annotation for parameter "%s" of %s::%s contains a non existent class "%s". '
                        . 'Did you maybe forget to add a "use" statement for this annotation?',
                    $parameterName,
                    $class->name,
                    $method->name,
                    $type
                ));
            }
            
            $type = $resolvedType;
        }

        if (!$this->classExists($type) && !$this->ignorePhpDocErrors) {
            throw new AnnotationException(sprintf(
                'The @param annotation for parameter "%s" of %s::%s contains a non existent class "%s"',
                $parameterName,
                $class->name,
                $method->name,
                $type
            ));
        }

        // Remove the leading \ (FQN shouldn't contain it)
        $type = ltrim($type, '\\');

        return $type;
    }

    /**
     * Attempts to resolve the FQN of the provided $type based on the $class and $member context.
     *
     * @param string $type
     * @param ReflectionClass $class
     * @param Reflector $member
     * 
     * @return string|null Fully qualified name of the type, or null if it could not be resolved
     */
    private function tryResolveFqn($type, ReflectionClass $class, Reflector $member) 
    {
        $alias = ($pos = strpos($type, '\\')) === false ? $type : substr($type, 0, $pos);
        $loweredAlias = strtolower($alias);

        // Retrieve "use" statements
        $uses = $this->parser->parseUseStatements($class);

        if (isset($uses[$loweredAlias])) {
            // Imported classes
            if ($pos !== false) {
                return $uses[$loweredAlias] . substr($type, $pos);
            } else {
                return $uses[$loweredAlias];
            }
        } elseif ($this->classExists($class->getNamespaceName() . '\\' . $type)) {
            return $class->getNamespaceName() . '\\' . $type;
        } elseif (isset($uses['__NAMESPACE__']) && $this->classExists($uses['__NAMESPACE__'] . '\\' . $type)) {
            // Class namespace
            return $uses['__NAMESPACE__'] . '\\' . $type;
        } elseif ($this->classExists($type)) {
            // No namespace
            return $type;
        }

        if (version_compare(phpversion(), '5.4.0', '<')) {
            return null;
        } else {
            // If all fail, try resolving through related traits
            return $this->tryResolveFqnInTraits($type, $class, $member);
        }
    }

    /**
     * Attempts to resolve the FQN of the provided $type based on the $class and $member context, specifically searching
     * through the traits that are used by the provided $class.
     * 
     * @param string $type
     * @param ReflectionClass $class
     * @param Reflector $member
     *
     * @return string|null Fully qualified name of the type, or null if it could not be resolved
     */
    private function tryResolveFqnInTraits($type, ReflectionClass $class, Reflector $member)
    {
        /** @var ReflectionClass[] $traits */
        $traits = array();

        // Get traits for the class and its parents
        while ($class) {
            $traits = array_merge($traits, $class->getTraits());
            $class = $class->getParentClass();
        }
        
        foreach ($traits as $trait) {
            // Eliminate traits that don't have the property/method/parameter
            if ($member instanceof ReflectionProperty && !$trait->hasProperty($member->name)) {
                continue;
            } elseif ($member instanceof ReflectionMethod && !$trait->hasMethod($member->name)) {
                continue;
            } elseif ($member instanceof ReflectionParameter && !$trait->hasMethod($member->getDeclaringFunction()->name)) {
                continue;
            }

            // Run the resolver again with the ReflectionClass instance for the trait
            $resolvedType = $this->tryResolveFqn($type, $trait, $member);
            
            if ($resolvedType) {
                return $resolvedType;
            }
        }
        return null;
    }

    /**
     * @param string $class
     * @return bool
     */
    private function classExists($class)
    {
        return class_exists($class) || interface_exists($class);
    }
}
<?php

namespace DI;

use Psr\Container\ContainerInterface;
use stdClass;

/**
 * @BeforeMethods({"initContainer"})
 */
class ContainerBench
{
    /**
     * @var ContainerInterface | FactoryInterface
     */
    private $container;

    public function initContainer()
    {
        $builder = new ContainerBuilder();

        $builder->addDefinitions([
            stdClass::class => function (ContainerInterface $container) {
                return new stdClass();
            },
        ]);

        $extraDefinitionsToSimulateRealisticContainer = array();
        for ($i = 0; $i < 1000; $i++) {
            $extraDefinitionsToSimulateRealisticContainer[stdClass::class . $i] = function (ContainerInterface $container) {
                return new stdClass();
            };
        }
        $builder->addDefinitions($extraDefinitionsToSimulateRealisticContainer);
        $this->container = $builder->build();
    }

    /**
     * @Revs(10000)
     */
    public function benchGetDummyClass()
    {
        $value = $this->container->get(stdClass::class);
    }

    /**
     * @Revs(10000)
     */
    public function benchCheckAndGetDummyClass()
    {
        $value = $this->container->has(stdClass::class) ? $this->container->get(stdClass::class) : null;
    }

    /**
     * @Revs(10000)
     */
    public function benchMakeDummyClass()
    {
        $value = $this->container->make(stdClass::class);
    }


    /**
     * @Revs(10000)
     */
    public function benchCheckAndMakeDummyClass()
    {
        $value = $this->container->has(stdClass::class) ? $this->container->make(stdClass::class) : null;
    }
}
<?php

namespace DI;

use DI\Definition\EntryReference;
use DI\Definition\Helper\ArrayDefinitionExtensionHelper;
use DI\Definition\Helper\EnvironmentVariableDefinitionHelper;
use DI\Definition\Helper\FactoryDefinitionHelper;
use DI\Definition\Helper\ObjectDefinitionHelper;
use DI\Definition\Helper\StringDefinitionHelper;
use DI\Definition\Helper\ValueDefinitionHelper;

if (! function_exists('DI\value')) {
    /**
     * Helper for defining a value.
     *
     * @param mixed $value
     *
     * @return ValueDefinitionHelper
     */
    function value($value)
    {
        return new ValueDefinitionHelper($value);
    }
}

if (! function_exists('DI\object')) {
    /**
     * Helper for defining an object.
     *
     * @param string|null $className Class name of the object.
     *                               If null, the name of the entry (in the container) will be used as class name.
     *
     * @return ObjectDefinitionHelper
     */
    function object($className = null)
    {
        return new ObjectDefinitionHelper($className);
    }
}

if (! function_exists('DI\factory')) {
    /**
     * Helper for defining a container entry using a factory function/callable.
     *
     * @param callable $factory The factory is a callable that takes the container as parameter
     *                          and returns the value to register in the container.
     *
     * @return FactoryDefinitionHelper
     */
    function factory($factory)
    {
        return new FactoryDefinitionHelper($factory);
    }
}

if (! function_exists('DI\decorate')) {
    /**
     * Decorate the previous definition using a callable.
     *
     * Example:
     *
     *     'foo' => decorate(function ($foo, $container) {
     *         return new CachedFoo($foo, $container->get('cache'));
     *     })
     *
     * @param callable $callable The callable takes the decorated object as first parameter and
     *                           the container as second.
     *
     * @return FactoryDefinitionHelper
     */
    function decorate($callable)
    {
        return new FactoryDefinitionHelper($callable, true);
    }
}

if (! function_exists('DI\get')) {
    /**
     * Helper for referencing another container entry in an object definition.
     *
     * @param string $entryName
     *
     * @return EntryReference
     */
    function get($entryName)
    {
        return new EntryReference($entryName);
    }
}

if (! function_exists('DI\link')) {
    /**
     * Helper for referencing another container entry in an object definition.
     *
     * @deprecated \DI\link() has been replaced by \DI\get()
     *
     * @param string $entryName
     *
     * @return EntryReference
     */
    function link($entryName)
    {
        return new EntryReference($entryName);
    }
}

if (! function_exists('DI\env')) {
    /**
     * Helper for referencing environment variables.
     *
     * @param string $variableName The name of the environment variable.
     * @param mixed $defaultValue The default value to be used if the environment variable is not defined.
     *
     * @return EnvironmentVariableDefinitionHelper
     */
    function env($variableName, $defaultValue = null)
    {
        // Only mark as optional if the default value was *explicitly* provided.
        $isOptional = 2 === func_num_args();

        return new EnvironmentVariableDefinitionHelper($variableName, $isOptional, $defaultValue);
    }
}

if (! function_exists('DI\add')) {
    /**
     * Helper for extending another definition.
     *
     * Example:
     *
     *     'log.backends' => DI\add(DI\get('My\Custom\LogBackend'))
     *
     * or:
     *
     *     'log.backends' => DI\add([
     *         DI\get('My\Custom\LogBackend')
     *     ])
     *
     * @param mixed|array $values A value or an array of values to add to the array.
     *
     * @return ArrayDefinitionExtensionHelper
     *
     * @since 5.0
     */
    function add($values)
    {
        if (! is_array($values)) {
            $values = [$values];
        }

        return new ArrayDefinitionExtensionHelper($values);
    }
}

if (! function_exists('DI\string')) {
    /**
     * Helper for concatenating strings.
     *
     * Example:
     *
     *     'log.filename' => DI\string('{app.path}/app.log')
     *
     * @param string $expression A string expression. Use the `{}` placeholders to reference other container entries.
     *
     * @return StringDefinitionHelper
     *
     * @since 5.0
     */
    function string($expression)
    {
        return new StringDefinitionHelper((string) $expression);
    }
}
<?php

namespace DI;

use DI\Definition\Definition;
use DI\Definition\FactoryDefinition;
use DI\Definition\Helper\DefinitionHelper;
use DI\Definition\InstanceDefinition;
use DI\Definition\ObjectDefinition;
use DI\Definition\Resolver\DefinitionResolver;
use DI\Definition\Resolver\ResolverDispatcher;
use DI\Definition\Source\CachedDefinitionSource;
use DI\Definition\Source\DefinitionSource;
use DI\Definition\Source\MutableDefinitionSource;
use DI\Invoker\DefinitionParameterResolver;
use DI\Proxy\ProxyFactory;
use Exception;
use Interop\Container\ContainerInterface as InteropContainerInterface;
use InvalidArgumentException;
use Invoker\Invoker;
use Invoker\ParameterResolver\AssociativeArrayResolver;
use Invoker\ParameterResolver\Container\TypeHintContainerResolver;
use Invoker\ParameterResolver\DefaultValueResolver;
use Invoker\ParameterResolver\NumericArrayResolver;
use Invoker\ParameterResolver\ResolverChain;
use Psr\Container\ContainerInterface;

/**
 * Dependency Injection Container.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class Container implements ContainerInterface, InteropContainerInterface, FactoryInterface, \DI\InvokerInterface
{
    /**
     * Map of entries with Singleton scope that are already resolved.
     * @var array
     */
    private $singletonEntries = [];

    /**
     * @var DefinitionSource
     */
    private $definitionSource;

    /**
     * @var DefinitionResolver
     */
    private $definitionResolver;

    /**
     * Map of definitions that are already looked up.
     *
     * @var array
     */
    private $definitionCache = [];

    /**
     * Array of entries being resolved. Used to avoid circular dependencies and infinite loops.
     * @var array
     */
    private $entriesBeingResolved = [];

    /**
     * @var \Invoker\InvokerInterface|null
     */
    private $invoker;

    /**
     * Container that wraps this container. If none, points to $this.
     *
     * @var ContainerInterface
     */
    private $wrapperContainer;

    /**
     * Use the ContainerBuilder to ease constructing the Container.
     *
     * @see ContainerBuilder
     *
     * @param DefinitionSource   $definitionSource
     * @param ProxyFactory       $proxyFactory
     * @param ContainerInterface $wrapperContainer If the container is wrapped by another container.
     */
    public function __construct(
        DefinitionSource $definitionSource,
        ProxyFactory $proxyFactory,
        ContainerInterface $wrapperContainer = null
    ) {
        $this->wrapperContainer = $wrapperContainer ?: $this;

        $this->definitionSource = $definitionSource;
        $this->definitionResolver = new ResolverDispatcher($this->wrapperContainer, $proxyFactory);

        // Auto-register the container
        $this->singletonEntries[self::class] = $this;
        $this->singletonEntries[FactoryInterface::class] = $this;
        $this->singletonEntries[InvokerInterface::class] = $this;
        $this->singletonEntries[ContainerInterface::class] = $this;
    }

    /**
     * Returns an entry of the container by its name.
     *
     * @param string $name Entry name or a class name.
     *
     * @throws InvalidArgumentException The name parameter must be of type string.
     * @throws DependencyException Error while resolving the entry.
     * @throws NotFoundException No entry found for the given name.
     * @return mixed
     */
    public function get($name)
    {
        if (! is_string($name)) {
            throw new InvalidArgumentException(sprintf(
                'The name parameter must be of type string, %s given',
                is_object($name) ? get_class($name) : gettype($name)
            ));
        }

        // Try to find the entry in the singleton map
        if (array_key_exists($name, $this->singletonEntries)) {
            return $this->singletonEntries[$name];
        }

        $definition = $this->getDefinition($name);
        if (! $definition) {
            throw new NotFoundException("No entry or class found for '$name'");
        }

        $value = $this->resolveDefinition($definition);

        // If the entry is singleton, we store it to always return it without recomputing it
        if ($definition->getScope() === Scope::SINGLETON) {
            $this->singletonEntries[$name] = $value;
        }

        return $value;
    }

    private function getDefinition($name)
    {
        if(!array_key_exists($name, $this->definitionCache)){
            $this->definitionCache[$name] = $this->definitionSource->getDefinition($name);
        }

        return $this->definitionCache[$name];
    }

    /**
     * Build an entry of the container by its name.
     *
     * This method behave like get() except it forces the scope to "prototype",
     * which means the definition of the entry will be re-evaluated each time.
     * For example, if the entry is a class, then a new instance will be created each time.
     *
     * This method makes the container behave like a factory.
     *
     * @param string $name       Entry name or a class name.
     * @param array  $parameters Optional parameters to use to build the entry. Use this to force specific parameters
     *                           to specific values. Parameters not defined in this array will be resolved using
     *                           the container.
     *
     * @throws InvalidArgumentException The name parameter must be of type string.
     * @throws DependencyException Error while resolving the entry.
     * @throws NotFoundException No entry found for the given name.
     * @return mixed
     */
    public function make($name, array $parameters = [])
    {
        if (! is_string($name)) {
            throw new InvalidArgumentException(sprintf(
                'The name parameter must be of type string, %s given',
                is_object($name) ? get_class($name) : gettype($name)
            ));
        }

        $definition = $this->getDefinition($name);
        if (! $definition) {
            // Try to find the entry in the singleton map
            if (array_key_exists($name, $this->singletonEntries)) {
                return $this->singletonEntries[$name];
            }

            throw new NotFoundException("No entry or class found for '$name'");
        }

        return $this->resolveDefinition($definition, $parameters);
    }

    /**
     * Test if the container can provide something for the given name.
     *
     * @param string $name Entry name or a class name.
     *
     * @throws InvalidArgumentException The name parameter must be of type string.
     * @return bool
     */
    public function has($name)
    {
        if (! is_string($name)) {
            throw new InvalidArgumentException(sprintf(
                'The name parameter must be of type string, %s given',
                is_object($name) ? get_class($name) : gettype($name)
            ));
        }

        if (array_key_exists($name, $this->singletonEntries)) {
            return true;
        }

        $definition = $this->getDefinition($name);
        if ($definition === null) {
            return false;
        }

        return $this->definitionResolver->isResolvable($definition);
    }

    /**
     * Inject all dependencies on an existing instance.
     *
     * @param object $instance Object to perform injection upon
     * @throws InvalidArgumentException
     * @throws DependencyException Error while injecting dependencies
     * @return object $instance Returns the same instance
     */
    public function injectOn($instance)
    {
        $objectDefinition = $this->definitionSource->getDefinition(get_class($instance));
        if (! $objectDefinition instanceof ObjectDefinition) {
            return $instance;
        }

        $definition = new InstanceDefinition($instance, $objectDefinition);

        $this->definitionResolver->resolve($definition);

        return $instance;
    }

    /**
     * Call the given function using the given parameters.
     *
     * Missing parameters will be resolved from the container.
     *
     * @param callable $callable   Function to call.
     * @param array    $parameters Parameters to use. Can be indexed by the parameter names
     *                             or not indexed (same order as the parameters).
     *                             The array can also contain DI definitions, e.g. DI\get().
     *
     * @return mixed Result of the function.
     */
    public function call($callable, array $parameters = [])
    {
        return $this->getInvoker()->call($callable, $parameters);
    }

    /**
     * Define an object or a value in the container.
     *
     * @param string                 $name  Entry name
     * @param mixed|DefinitionHelper $value Value, use definition helpers to define objects
     */
    public function set($name, $value)
    {
        if ($value instanceof DefinitionHelper) {
            $value = $value->getDefinition($name);
        } elseif ($value instanceof \Closure) {
            $value = new FactoryDefinition($name, $value);
        }

        if ($value instanceof Definition) {
            $this->setDefinition($name, $value);
        } else {
            $this->singletonEntries[$name] = $value;
        }
    }

    /**
     * Resolves a definition.
     *
     * Checks for circular dependencies while resolving the definition.
     *
     * @param Definition $definition
     * @param array      $parameters
     *
     * @throws DependencyException Error while resolving the entry.
     * @return mixed
     */
    private function resolveDefinition(Definition $definition, array $parameters = [])
    {
        $entryName = $definition->getName();

        // Check if we are already getting this entry -> circular dependency
        if (isset($this->entriesBeingResolved[$entryName])) {
            throw new DependencyException("Circular dependency detected while trying to resolve entry '$entryName'");
        }
        $this->entriesBeingResolved[$entryName] = true;

        // Resolve the definition
        try {
            $value = $this->definitionResolver->resolve($definition, $parameters);
        } catch (Exception $exception) {
            unset($this->entriesBeingResolved[$entryName]);
            throw $exception;
        }

        unset($this->entriesBeingResolved[$entryName]);

        return $value;
    }

    private function setDefinition($name, Definition $definition)
    {
        if ($this->definitionSource instanceof CachedDefinitionSource) {
            throw new \LogicException('You cannot set a definition at runtime on a container that has a cache configured. Doing so would risk caching the definition for the next execution, where it might be different. You can either put your definitions in a file, remove the cache or ->set() a raw value directly (PHP object, string, int, ...) instead of a PHP-DI definition.');
        }

        if (! $this->definitionSource instanceof MutableDefinitionSource) {
            // This can happen if you instantiate the container yourself
            throw new \LogicException('The container has not been initialized correctly');
        }

        $this->definitionCache = []; //Completely clear definitionCache

        // Clear existing entries if it exists
        if (array_key_exists($name, $this->singletonEntries)) {
            unset($this->singletonEntries[$name]);
        }

        $this->definitionSource->addDefinition($definition);
    }

    /**
     * @return \Invoker\InvokerInterface
     */
    private function getInvoker()
    {
        if (! $this->invoker) {
            $parameterResolver = new ResolverChain([
                new DefinitionParameterResolver($this->definitionResolver),
                new NumericArrayResolver,
                new AssociativeArrayResolver,
                new DefaultValueResolver,
                new TypeHintContainerResolver($this->wrapperContainer),
            ]);

            $this->invoker = new Invoker($parameterResolver, $this);
        }

        return $this->invoker;
    }
}
<?php

namespace DI\Proxy;

use ProxyManager\Configuration;
use ProxyManager\Factory\LazyLoadingValueHolderFactory;
use ProxyManager\FileLocator\FileLocator;
use ProxyManager\GeneratorStrategy\EvaluatingGeneratorStrategy;
use ProxyManager\GeneratorStrategy\FileWriterGeneratorStrategy;

/**
 * Creates proxy classes.
 *
 * Wraps Ocramius/ProxyManager LazyLoadingValueHolderFactory.
 *
 * @see ProxyManager\Factory\LazyLoadingValueHolderFactory
 *
 * @since  5.0
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ProxyFactory
{
    /**
     * If true, write the proxies to disk to improve performances.
     * @var bool
     */
    private $writeProxiesToFile;

    /**
     * Directory where to write the proxies (if $writeProxiesToFile is enabled).
     * @var string
     */
    private $proxyDirectory;

    /**
     * @var LazyLoadingValueHolderFactory|null
     */
    private $proxyManager;

    public function __construct($writeProxiesToFile, $proxyDirectory = null)
    {
        $this->writeProxiesToFile = $writeProxiesToFile;
        $this->proxyDirectory = $proxyDirectory;
    }

    /**
     * Creates a new lazy proxy instance of the given class with
     * the given initializer.
     *
     * @param string   $className   name of the class to be proxied
     * @param \Closure $initializer initializer to be passed to the proxy
     *
     * @return \ProxyManager\Proxy\LazyLoadingInterface
     */
    public function createProxy($className, \Closure $initializer)
    {
        $this->createProxyManager();

        return $this->proxyManager->createProxy($className, $initializer);
    }

    private function createProxyManager()
    {
        if ($this->proxyManager !== null) {
            return;
        }

        if (! class_exists(Configuration::class)) {
            throw new \RuntimeException('The ocramius/proxy-manager library is not installed. Lazy injection requires that library to be installed with Composer in order to work. Run "composer require ocramius/proxy-manager:~1.0".');
        }

        $config = new Configuration();

        if ($this->writeProxiesToFile) {
            $config->setProxiesTargetDir($this->proxyDirectory);
            $config->setGeneratorStrategy(new FileWriterGeneratorStrategy(new FileLocator($this->proxyDirectory)));
            spl_autoload_register($config->getProxyAutoloader());
        } else {
            $config->setGeneratorStrategy(new EvaluatingGeneratorStrategy());
        }

        $this->proxyManager = new LazyLoadingValueHolderFactory($config);
    }
}
<?php

namespace DI\Cache;

use Doctrine\Common\Cache\Cache;
use Doctrine\Common\Cache\ClearableCache;
use Doctrine\Common\Cache\FlushableCache;

/**
 * Simple implementation of a cache based on an array.
 *
 * This implementation can be used instead of Doctrine's ArrayCache for
 * better performances (because simpler implementation).
 *
 * The code is based on Doctrine's ArrayCache provider:
 * @see \Doctrine\Common\Cache\ArrayCache
 * @link   www.doctrine-project.org
 * @author Benjamin Eberlei <kontakt@beberlei.de>
 * @author Guilherme Blanco <guilhermeblanco@hotmail.com>
 * @author Jonathan Wage <jonwage@gmail.com>
 * @author Roman Borschel <roman@code-factory.org>
 * @author David Abdemoulaie <dave@hobodave.com>
 */
class ArrayCache implements Cache, FlushableCache, ClearableCache
{
    /**
     * @var array
     */
    private $data = [];

    public function fetch($id)
    {
        return $this->contains($id) ? $this->data[$id] : false;
    }

    public function contains($id)
    {
        // isset() is required for performance optimizations, to avoid unnecessary function calls to array_key_exists.
        return isset($this->data[$id]) || array_key_exists($id, $this->data);
    }

    public function save($id, $data, $lifeTime = 0)
    {
        $this->data[$id] = $data;

        return true;
    }

    public function delete($id)
    {
        unset($this->data[$id]);

        return true;
    }

    public function getStats()
    {
        return null;
    }

    public function flushAll()
    {
        $this->data = [];

        return true;
    }

    public function deleteAll()
    {
        return $this->flushAll();
    }
}
<?php

namespace DI;

use Interop\Container\Exception\NotFoundException as BaseNotFoundException;

/**
 * Exception thrown when a class or a value is not found in the container.
 */
class NotFoundException extends \Exception implements BaseNotFoundException
{
}
<?php

namespace DI;

use DI\Definition\Source\AnnotationReader;
use DI\Definition\Source\Autowiring;
use DI\Definition\Source\CachedDefinitionSource;
use DI\Definition\Source\DefinitionArray;
use DI\Definition\Source\DefinitionFile;
use DI\Definition\Source\DefinitionSource;
use DI\Definition\Source\SourceChain;
use DI\Proxy\ProxyFactory;
use Doctrine\Common\Cache\Cache;
use InvalidArgumentException;
use Psr\Container\ContainerInterface;

/**
 * Helper to create and configure a Container.
 *
 * With the default options, the container created is appropriate for the development environment.
 *
 * Example:
 *
 *     $builder = new ContainerBuilder();
 *     $container = $builder->build();
 *
 * @since  3.2
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ContainerBuilder
{
    /**
     * Name of the container class, used to create the container.
     * @var string
     */
    private $containerClass;

    /**
     * @var bool
     */
    private $useAutowiring = true;

    /**
     * @var bool
     */
    private $useAnnotations = false;

    /**
     * @var bool
     */
    private $ignorePhpDocErrors = false;

    /**
     * @var Cache
     */
    private $cache;

    /**
     * If true, write the proxies to disk to improve performances.
     * @var bool
     */
    private $writeProxiesToFile = false;

    /**
     * Directory where to write the proxies (if $writeProxiesToFile is enabled).
     * @var string
     */
    private $proxyDirectory;

    /**
     * If PHP-DI is wrapped in another container, this references the wrapper.
     * @var ContainerInterface
     */
    private $wrapperContainer;

    /**
     * @var DefinitionSource[]
     */
    private $definitionSources = [];

    /**
     * Whether the container has already been built.
     * @var bool
     */
    private $locked = false;

    /**
     * Build a container configured for the dev environment.
     *
     * @return Container
     */
    public static function buildDevContainer()
    {
        $builder = new self();

        return $builder->build();
    }

    /**
     * @param string $containerClass Name of the container class, used to create the container.
     */
    public function __construct($containerClass = 'DI\Container')
    {
        $this->containerClass = $containerClass;
    }

    /**
     * Build and return a container.
     *
     * @return Container
     */
    public function build()
    {
        $sources = array_reverse($this->definitionSources);
        if ($this->useAnnotations) {
            $sources[] = new AnnotationReader($this->ignorePhpDocErrors);
        } elseif ($this->useAutowiring) {
            $sources[] = new Autowiring();
        }

        $chain = new SourceChain($sources);

        if ($this->cache) {
            $source = new CachedDefinitionSource($chain, $this->cache);
            $chain->setRootDefinitionSource($source);
        } else {
            $source = $chain;
            // Mutable definition source
            $source->setMutableDefinitionSource(new DefinitionArray());
        }

        $proxyFactory = new ProxyFactory($this->writeProxiesToFile, $this->proxyDirectory);

        $this->locked = true;

        $containerClass = $this->containerClass;

        return new $containerClass($source, $proxyFactory, $this->wrapperContainer);
    }

    /**
     * Enable or disable the use of autowiring to guess injections.
     *
     * Enabled by default.
     *
     * @param bool $bool
     * @return ContainerBuilder
     */
    public function useAutowiring($bool)
    {
        $this->ensureNotLocked();

        $this->useAutowiring = $bool;

        return $this;
    }

    /**
     * Enable or disable the use of annotations to guess injections.
     *
     * Disabled by default.
     *
     * @param bool $bool
     * @return ContainerBuilder
     */
    public function useAnnotations($bool)
    {
        $this->ensureNotLocked();

        $this->useAnnotations = $bool;

        return $this;
    }

    /**
     * Enable or disable ignoring phpdoc errors (non-existent classes in `@param` or `@var`).
     *
     * @param bool $bool
     * @return ContainerBuilder
     */
    public function ignorePhpDocErrors($bool)
    {
        $this->ensureNotLocked();

        $this->ignorePhpDocErrors = $bool;

        return $this;
    }

    /**
     * Enables the use of a cache for the definitions.
     *
     * @param Cache $cache Cache backend to use
     * @return ContainerBuilder
     */
    public function setDefinitionCache(Cache $cache)
    {
        $this->ensureNotLocked();

        $this->cache = $cache;

        return $this;
    }

    /**
     * Configure the proxy generation.
     *
     * For dev environment, use writeProxiesToFile(false) (default configuration)
     * For production environment, use writeProxiesToFile(true, 'tmp/proxies')
     *
     * @param bool     $writeToFile    If true, write the proxies to disk to improve performances
     * @param string|null $proxyDirectory Directory where to write the proxies
     * @throws InvalidArgumentException when writeToFile is set to true and the proxy directory is null
     * @return ContainerBuilder
     */
    public function writeProxiesToFile($writeToFile, $proxyDirectory = null)
    {
        $this->ensureNotLocked();

        $this->writeProxiesToFile = $writeToFile;

        if ($writeToFile && $proxyDirectory === null) {
            throw new InvalidArgumentException(
                'The proxy directory must be specified if you want to write proxies on disk'
            );
        }
        $this->proxyDirectory = $proxyDirectory;

        return $this;
    }

    /**
     * If PHP-DI's container is wrapped by another container, we can
     * set this so that PHP-DI will use the wrapper rather than itself for building objects.
     *
     * @param ContainerInterface $otherContainer
     * @return $this
     */
    public function wrapContainer(ContainerInterface $otherContainer)
    {
        $this->ensureNotLocked();

        $this->wrapperContainer = $otherContainer;

        return $this;
    }

    /**
     * Add definitions to the container.
     *
     * @param string|array|DefinitionSource $definitions Can be an array of definitions, the
     *                                                   name of a file containing definitions
     *                                                   or a DefinitionSource object.
     * @return $this
     */
    public function addDefinitions($definitions)
    {
        $this->ensureNotLocked();

        if (is_string($definitions)) {
            // File
            $definitions = new DefinitionFile($definitions);
        } elseif (is_array($definitions)) {
            $definitions = new DefinitionArray($definitions);
        } elseif (! $definitions instanceof DefinitionSource) {
            throw new InvalidArgumentException(sprintf(
                '%s parameter must be a string, an array or a DefinitionSource object, %s given',
                'ContainerBuilder::addDefinitions()',
                is_object($definitions) ? get_class($definitions) : gettype($definitions)
            ));
        }

        $this->definitionSources[] = $definitions;

        return $this;
    }

    private function ensureNotLocked()
    {
        if ($this->locked) {
            throw new \LogicException('The ContainerBuilder cannot be modified after the container has been built');
        }
    }
}
<?php

namespace DI;

/**
 * Scope enum.
 *
 * The scope defines the lifecycle of an entry.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class Scope
{
    /**
     * A singleton entry will be computed once and shared.
     *
     * For a class, only a single instance of the class will be created.
     */
    const SINGLETON = 'singleton';

    /**
     * A prototype entry will be recomputed each time it is asked.
     *
     * For a class, this will create a new instance each time.
     */
    const PROTOTYPE = 'prototype';

    /**
     * Method kept for backward compatibility, use the constant instead.
     *
     * @return string
     */
    public static function SINGLETON()
    {
        return self::SINGLETON;
    }

    /**
     * Method kept for backward compatibility, use the constant instead.
     *
     * @return string
     */
    public static function PROTOTYPE()
    {
        return self::PROTOTYPE;
    }
}
<?php

namespace DI\Annotation;

use DI\Definition\Exception\AnnotationException;

/**
 * "Inject" annotation.
 *
 * Marks a property or method as an injection point
 *
 * @Annotation
 * @Target({"METHOD","PROPERTY"})
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
final class Inject
{
    /**
     * Entry name.
     * @var string
     */
    private $name;

    /**
     * Parameters, indexed by the parameter number (index) or name.
     *
     * Used if the annotation is set on a method
     * @var array
     */
    private $parameters = [];

    /**
     * @param array $values
     * @throws AnnotationException
     */
    public function __construct(array $values)
    {
        // Process the parameters as a list AND as a parameter array (we don't know on what the annotation is)

        // @Inject(name="foo")
        if (isset($values['name']) && is_string($values['name'])) {
            $this->name = $values['name'];

            return;
        }

        // @Inject
        if (! isset($values['value'])) {
            return;
        }

        $values = $values['value'];

        // @Inject("foo")
        if (is_string($values)) {
            $this->name = $values;
        }

        // @Inject({...}) on a method
        if (is_array($values)) {
            foreach ($values as $key => $value) {
                if (! is_string($value)) {
                    throw new AnnotationException(sprintf(
                        '@Inject({"param" = "value"}) expects "value" to be a string, %s given.',
                        json_encode($value)
                    ));
                }

                $this->parameters[$key] = $value;
            }
        }
    }

    /**
     * @return string Name of the entry to inject
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * @return array Parameters, indexed by the parameter number (index) or name
     */
    public function getParameters()
    {
        return $this->parameters;
    }
}
<?php

namespace DI\Annotation;

use DI\Scope;
use UnexpectedValueException;

/**
 * "Injectable" annotation.
 *
 * Marks a class as injectable
 *
 * @Annotation
 * @Target("CLASS")
 *
 * @author Domenic Muskulus <domenic@muskulus.eu>
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
final class Injectable
{
    /**
     * The scope of an class: prototype, singleton.
     * @var string|null
     */
    private $scope;

    /**
     * Should the object be lazy-loaded.
     * @var bool|null
     */
    private $lazy;

    /**
     * @param array $values
     */
    public function __construct(array $values)
    {
        if (isset($values['scope'])) {
            if ($values['scope'] === 'prototype') {
                $this->scope = Scope::PROTOTYPE;
            } elseif ($values['scope'] === 'singleton') {
                $this->scope = Scope::SINGLETON;
            } else {
                throw new UnexpectedValueException(sprintf("Value '%s' is not a valid scope", $values['scope']));
            }
        }
        if (isset($values['lazy'])) {
            $this->lazy = (bool) $values['lazy'];
        }
    }

    /**
     * @return string|null
     */
    public function getScope()
    {
        return $this->scope;
    }

    /**
     * @return bool|null
     */
    public function isLazy()
    {
        return $this->lazy;
    }
}
<?php

namespace DI\Invoker;

use DI\Definition\Helper\DefinitionHelper;
use DI\Definition\Resolver\DefinitionResolver;
use Invoker\ParameterResolver\ParameterResolver;
use ReflectionFunctionAbstract;

/**
 * Resolves callable parameters using definitions.
 *
 * @since 5.0
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class DefinitionParameterResolver implements ParameterResolver
{
    /**
     * @var DefinitionResolver
     */
    private $definitionResolver;

    public function __construct(DefinitionResolver $definitionResolver)
    {
        $this->definitionResolver = $definitionResolver;
    }

    /**
     * {@inheritdoc}
     */
    public function getParameters(
        ReflectionFunctionAbstract $reflection,
        array $providedParameters,
        array $resolvedParameters
    ) {
        // Skip parameters already resolved
        if (! empty($resolvedParameters)) {
            $providedParameters = array_diff_key($providedParameters, $resolvedParameters);
        }

        foreach ($providedParameters as $key => $value) {
            if (! $value instanceof DefinitionHelper) {
                continue;
            }

            $definition = $value->getDefinition('');
            $value = $this->definitionResolver->resolve($definition);

            if (is_int($key)) {
                // Indexed by position
                $resolvedParameters[$key] = $value;
            } else {
                // Indexed by parameter name
                // TODO optimize?
                $reflectionParameters = $reflection->getParameters();
                foreach ($reflectionParameters as $reflectionParameter) {
                    if ($key === $reflectionParameter->name) {
                        $resolvedParameters[$reflectionParameter->getPosition()] = $value;
                    }
                }
            }
        }

        return $resolvedParameters;
    }
}
<?php

namespace DI\Invoker;

use Invoker\ParameterResolver\ParameterResolver;
use Psr\Container\ContainerInterface;
use ReflectionFunctionAbstract;

/**
 * Inject the container, the definition or any other service using type-hints.
 *
 * {@internal This class is similar to TypeHintingResolver and TypeHintingContainerResolver,
 *            we use this instead for performance reasons}
 *
 * @author Quim Calpe <quim@kalpe.com>
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class FactoryParameterResolver implements ParameterResolver
{
    /**
     * @var ContainerInterface
     */
    private $container;

    public function __construct(ContainerInterface $container)
    {
        $this->container = $container;
    }

    public function getParameters(
        ReflectionFunctionAbstract $reflection,
        array $providedParameters,
        array $resolvedParameters
    ) {
        $parameters = $reflection->getParameters();

        // Skip parameters already resolved
        if (! empty($resolvedParameters)) {
            $parameters = array_diff_key($parameters, $resolvedParameters);
        }

        foreach ($parameters as $index => $parameter) {
            $parameterClass = $parameter->getClass();

            if (!$parameterClass) {
                continue;
            }

            if ($parameterClass->name === 'Interop\Container\ContainerInterface'
                || $parameterClass->name === 'Psr\Container\ContainerInterface') {
                $resolvedParameters[$index] = $this->container;
            } elseif ($parameterClass->name === 'DI\Factory\RequestedEntry') {
                // By convention the second parameter is the definition
                $resolvedParameters[$index] = $providedParameters[1];
            } elseif ($this->container->has($parameterClass->name)) {
                $resolvedParameters[$index] = $this->container->get($parameterClass->name);
            }
        }

        return $resolvedParameters;
    }
}
<?php

namespace DI;

use DI\Definition\Definition;

/**
 * Debug utilities.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class Debug
{
    /**
     * Dump the definition to a string.
     *
     * @return string
     *
     * @deprecated You should cast the definition to string instead.
     * This feature was simplified: definitions can be cast to string directly.
     */
    public static function dumpDefinition(Definition $definition)
    {
        return (string) $definition;
    }
}
<?php

namespace DI;

/**
 * Describes the basic interface of a factory.
 *
 * @since 4.0
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
interface FactoryInterface
{
    /**
     * Resolves an entry by its name. If given a class name, it will return a new instance of that class.
     *
     * @param string $name       Entry name or a class name.
     * @param array  $parameters Optional parameters to use to build the entry. Use this to force specific
     *                           parameters to specific values. Parameters not defined in this array will
     *                           be automatically resolved.
     *
     * @throws \InvalidArgumentException The name parameter must be of type string.
     * @throws DependencyException       Error while resolving the entry.
     * @throws NotFoundException         No entry or class found for the given name.
     * @return mixed
     */
    public function make($name, array $parameters = []);
}
<?php

namespace DI\Definition\ObjectDefinition;

use DI\Definition\Definition;
use DI\Scope;

/**
 * Describe an injection in an object method.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class MethodInjection implements Definition
{
    /**
     * @var string
     */
    private $methodName;

    /**
     * @var array
     */
    private $parameters = [];

    /**
     * @param string $methodName
     * @param array  $parameters
     */
    public function __construct($methodName, array $parameters = [])
    {
        $this->methodName = (string) $methodName;
        $this->parameters = $parameters;
    }

    public static function constructor(array $parameters = [])
    {
        return new self('__construct', $parameters);
    }

    /**
     * @return string Method name
     */
    public function getMethodName()
    {
        return $this->methodName;
    }

    /**
     * @return array
     */
    public function getParameters()
    {
        return $this->parameters;
    }

    /**
     * Replace the parameters of the definition by a new array of parameters.
     *
     * @param array $parameters
     */
    public function replaceParameters(array $parameters)
    {
        $this->parameters = $parameters;
    }

    public function merge(MethodInjection $definition)
    {
        // In case of conflicts, the current definition prevails.
        $this->parameters = $this->parameters + $definition->parameters;
    }

    /**
     * {@inheritdoc}
     */
    public function getName()
    {
        return null;
    }

    /**
     * {@inheritdoc}
     */
    public function getScope()
    {
        return Scope::PROTOTYPE;
    }
}
<?php

namespace DI\Definition\ObjectDefinition;

/**
 * Describe an injection in a class property.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class PropertyInjection
{
    /**
     * Property name.
     * @var string
     */
    private $propertyName;

    /**
     * Value that should be injected in the property.
     * @var mixed
     */
    private $value;

    /**
     * Use for injecting in properties of parent classes: the class name
     * must be the name of the parent class because private properties
     * can be attached to the parent classes, not the one we are resolving.
     * @var string|null
     */
    private $className;

    /**
     * @param string      $propertyName Property name
     * @param mixed       $value        Value that should be injected in the property
     * @param string|null $className
     */
    public function __construct($propertyName, $value, $className = null)
    {
        $this->propertyName = (string) $propertyName;
        $this->value = $value;
        $this->className = $className;
    }

    /**
     * @return string Property name
     */
    public function getPropertyName()
    {
        return $this->propertyName;
    }

    /**
     * @return mixed Value that should be injected in the property
     */
    public function getValue()
    {
        return $this->value;
    }

    /**
     * @return string|null
     */
    public function getClassName()
    {
        return $this->className;
    }
}
<?php

namespace DI\Definition;

use DI\Definition\Helper\DefinitionHelper;

/**
 * Represents a reference to a container entry.
 *
 * TODO should EntryReference and AliasDefinition be merged into a ReferenceDefinition?
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class EntryReference implements DefinitionHelper
{
    /**
     * Entry name.
     * @var string
     */
    private $name;

    /**
     * @param string $entryName Entry name
     */
    public function __construct($entryName)
    {
        $this->name = $entryName;
    }

    /**
     * @return string Entry name
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * {@inheritdoc}
     */
    public function getDefinition($entryName)
    {
        return new AliasDefinition($entryName, $this->name);
    }
}
<?php

namespace DI\Definition;

/**
 * Cacheable definition.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
interface CacheableDefinition extends Definition
{
}
<?php

namespace DI\Definition\Source;

use DI\Definition\CacheableDefinition;
use DI\Definition\Definition;
use Doctrine\Common\Cache\Cache;

/**
 * Caches another definition source.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class CachedDefinitionSource implements DefinitionSource
{
    /**
     * Prefix for cache key, to avoid conflicts with other systems using the same cache.
     * @var string
     */
    const CACHE_PREFIX = 'DI\\Definition\\';

    /**
     * @var DefinitionSource
     */
    private $source;

    /**
     * @var Cache
     */
    private $cache;

    public function __construct(DefinitionSource $source, Cache $cache)
    {
        $this->source = $source;
        $this->cache = $cache;
    }

    /**
     * {@inheritdoc}
     */
    public function getDefinition($name)
    {
        // Look in cache
        $definition = $this->fetchFromCache($name);

        if ($definition === false) {
            $definition = $this->source->getDefinition($name);

            // Save to cache
            if ($definition === null || ($definition instanceof CacheableDefinition)) {
                $this->saveToCache($name, $definition);
            }
        }

        return $definition;
    }

    /**
     * @return Cache
     */
    public function getCache()
    {
        return $this->cache;
    }

    /**
     * Fetches a definition from the cache.
     *
     * @param string $name Entry name
     * @return Definition|null|bool The cached definition, null or false if the value is not already cached
     */
    private function fetchFromCache($name)
    {
        $cacheKey = self::CACHE_PREFIX . $name;

        $data = $this->cache->fetch($cacheKey);

        if ($data !== false) {
            return $data;
        }

        return false;
    }

    /**
     * Saves a definition to the cache.
     *
     * @param string          $name Entry name
     * @param Definition|null $definition
     */
    private function saveToCache($name, Definition $definition = null)
    {
        $cacheKey = self::CACHE_PREFIX . $name;

        $this->cache->save($cacheKey, $definition);
    }
}
<?php

namespace DI\Definition\Source;

use DI\Definition\Definition;
use DI\Definition\Exception\DefinitionException;

/**
 * Source of definitions for entries of the container.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
interface DefinitionSource
{
    /**
     * Returns the DI definition for the entry name.
     *
     * @param string $name
     *
     * @throws DefinitionException An invalid definition was found.
     * @return Definition|null
     */
    public function getDefinition($name);
}
<?php

namespace DI\Definition\Source;

use DI\Definition\Exception\DefinitionException;

/**
 * Reads DI definitions from a file returning a PHP array.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class DefinitionFile extends DefinitionArray
{
    /**
     * @var bool
     */
    private $initialized = false;

    /**
     * File containing definitions, or null if the definitions are given as a PHP array.
     * @var string|null
     */
    private $file;

    /**
     * @param string $file File in which the definitions are returned as an array.
     */
    public function __construct($file)
    {
        // Lazy-loading to improve performances
        $this->file = $file;

        parent::__construct([]);
    }

    /**
     * {@inheritdoc}
     */
    public function getDefinition($name)
    {
        $this->initialize();

        return parent::getDefinition($name);
    }

    /**
     * Lazy-loading of the definitions.
     * @throws DefinitionException
     */
    private function initialize()
    {
        if ($this->initialized === true) {
            return;
        }

        $definitions = require $this->file;

        if (! is_array($definitions)) {
            throw new DefinitionException("File {$this->file} should return an array of definitions");
        }

        $this->addDefinitions($definitions);

        $this->initialized = true;
    }
}
<?php

namespace DI\Definition\Source;

use DI\Definition\Definition;
use DI\Definition\HasSubDefinition;

/**
 * Manages a chain of other definition sources.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class SourceChain implements DefinitionSource, MutableDefinitionSource
{
    /**
     * @var DefinitionSource[]
     */
    private $sources;

    /**
     * @var DefinitionSource
     */
    private $rootSource;

    /**
     * @var MutableDefinitionSource|null
     */
    private $mutableSource;

    /**
     * @param DefinitionSource[] $sources
     */
    public function __construct(array $sources)
    {
        // We want a numerically indexed array to ease the traversal later
        $this->sources = array_values($sources);
        $this->rootSource = $this;
    }

    /**
     * {@inheritdoc}
     * @param int $startIndex Use this parameter to start looking from a specific
     *                        point in the source chain.
     */
    public function getDefinition($name, $startIndex = 0)
    {
        $count = count($this->sources);
        for ($i = $startIndex; $i < $count; $i++) {
            $source = $this->sources[$i];

            $definition = $source->getDefinition($name);

            if ($definition) {
                if ($definition instanceof HasSubDefinition) {
                    $this->resolveSubDefinition($definition, $i);
                }

                return $definition;
            }
        }

        return null;
    }

    public function addDefinition(Definition $definition)
    {
        if (! $this->mutableSource) {
            throw new \LogicException("The container's definition source has not been initialized correctly");
        }

        $this->mutableSource->addDefinition($definition);
    }

    public function setRootDefinitionSource(DefinitionSource $rootSource)
    {
        $this->rootSource = $rootSource;
    }

    private function resolveSubDefinition(HasSubDefinition $definition, $currentIndex)
    {
        $subDefinitionName = $definition->getSubDefinitionName();

        if ($subDefinitionName === $definition->getName()) {
            // Extending itself: look in the next sources only (else infinite recursion)
            $subDefinition = $this->getDefinition($subDefinitionName, $currentIndex + 1);
        } else {
            // Extending another definition: look from the root
            $subDefinition = $this->rootSource->getDefinition($subDefinitionName);
        }

        if ($subDefinition) {
            $definition->setSubDefinition($subDefinition);
        }
    }

    public function setMutableDefinitionSource(MutableDefinitionSource $mutableSource)
    {
        $this->mutableSource = $mutableSource;

        array_unshift($this->sources, $mutableSource);
    }
}
<?php

namespace DI\Definition\Source;

use DI\Definition\EntryReference;
use DI\Definition\ObjectDefinition;
use DI\Definition\ObjectDefinition\MethodInjection;

/**
 * Reads DI class definitions using reflection.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class Autowiring implements DefinitionSource
{
    /**
     * {@inheritdoc}
     */
    public function getDefinition($name)
    {
        if (!class_exists($name) && !interface_exists($name)) {
            return null;
        }

        $definition = new ObjectDefinition($name);

        // Constructor
        $class = new \ReflectionClass($name);
        $constructor = $class->getConstructor();
        if ($constructor && $constructor->isPublic()) {
            $definition->setConstructorInjection(
                MethodInjection::constructor($this->getParametersDefinition($constructor))
            );
        }

        return $definition;
    }

    /**
     * Read the type-hinting from the parameters of the function.
     */
    private function getParametersDefinition(\ReflectionFunctionAbstract $constructor)
    {
        $parameters = [];

        foreach ($constructor->getParameters() as $index => $parameter) {
            // Skip optional parameters
            if ($parameter->isOptional()) {
                continue;
            }

            $parameterClass = $parameter->getClass();

            if ($parameterClass) {
                $parameters[$index] = new EntryReference($parameterClass->getName());
            }
        }

        return $parameters;
    }
}
<?php

namespace DI\Definition\Source;

use DI\Annotation\Inject;
use DI\Annotation\Injectable;
use DI\Definition\EntryReference;
use DI\Definition\Exception\AnnotationException;
use DI\Definition\Exception\DefinitionException;
use DI\Definition\ObjectDefinition;
use DI\Definition\ObjectDefinition\MethodInjection;
use DI\Definition\ObjectDefinition\PropertyInjection;
use Doctrine\Common\Annotations\AnnotationRegistry;
use Doctrine\Common\Annotations\Reader;
use Doctrine\Common\Annotations\SimpleAnnotationReader;
use InvalidArgumentException;
use PhpDocReader\PhpDocReader;
use ReflectionClass;
use ReflectionMethod;
use ReflectionParameter;
use ReflectionProperty;
use UnexpectedValueException;

/**
 * Provides DI definitions by reading annotations such as @ Inject and @ var annotations.
 *
 * Uses Autowiring, Doctrine's Annotations and regex docblock parsing.
 * This source automatically includes the reflection source.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class AnnotationReader implements DefinitionSource
{
    /**
     * @var Reader
     */
    private $annotationReader;

    /**
     * @var PhpDocReader
     */
    private $phpDocReader;

    /**
     * @var bool
     */
    private $ignorePhpDocErrors;

    public function __construct($ignorePhpDocErrors = false)
    {
        $this->ignorePhpDocErrors = (bool) $ignorePhpDocErrors;
    }

    /**
     * {@inheritdoc}
     * @throws AnnotationException
     * @throws InvalidArgumentException The class doesn't exist
     */
    public function getDefinition($name)
    {
        if (!class_exists($name) && !interface_exists($name)) {
            return null;
        }

        $class = new ReflectionClass($name);
        $definition = new ObjectDefinition($name);

        $this->readInjectableAnnotation($class, $definition);

        // Browse the class properties looking for annotated properties
        $this->readProperties($class, $definition);

        // Browse the object's methods looking for annotated methods
        $this->readMethods($class, $definition);

        return $definition;
    }

    /**
     * Browse the class properties looking for annotated properties.
     */
    private function readProperties(ReflectionClass $class, ObjectDefinition $definition)
    {
        foreach ($class->getProperties() as $property) {
            if ($property->isStatic()) {
                continue;
            }
            $this->readProperty($property, $definition);
        }

        // Read also the *private* properties of the parent classes
        /** @noinspection PhpAssignmentInConditionInspection */
        while ($class = $class->getParentClass()) {
            foreach ($class->getProperties(ReflectionProperty::IS_PRIVATE) as $property) {
                if ($property->isStatic()) {
                    continue;
                }
                $this->readProperty($property, $definition, $class->getName());
            }
        }
    }

    private function readProperty(ReflectionProperty $property, ObjectDefinition $definition, $classname = null)
    {
        // Look for @Inject annotation
        /** @var $annotation Inject */
        $annotation = $this->getAnnotationReader()->getPropertyAnnotation($property, 'DI\Annotation\Inject');
        if ($annotation === null) {
            return null;
        }

        // @Inject("name") or look for @var content
        $entryName = $annotation->getName() ?: $this->getPhpDocReader()->getPropertyClass($property);

        if ($entryName === null) {
            throw new AnnotationException(sprintf(
                '@Inject found on property %s::%s but unable to guess what to inject, use a @var annotation',
                $property->getDeclaringClass()->getName(),
                $property->getName()
            ));
        }

        $definition->addPropertyInjection(
            new PropertyInjection($property->getName(), new EntryReference($entryName), $classname)
        );
    }

    /**
     * Browse the object's methods looking for annotated methods.
     */
    private function readMethods(ReflectionClass $class, ObjectDefinition $objectDefinition)
    {
        // This will look in all the methods, including those of the parent classes
        foreach ($class->getMethods(ReflectionMethod::IS_PUBLIC) as $method) {
            if ($method->isStatic()) {
                continue;
            }

            $methodInjection = $this->getMethodInjection($method);

            if (! $methodInjection) {
                continue;
            }

            if ($method->isConstructor()) {
                $objectDefinition->setConstructorInjection($methodInjection);
            } else {
                $objectDefinition->addMethodInjection($methodInjection);
            }
        }
    }

    private function getMethodInjection(ReflectionMethod $method)
    {
        // Look for @Inject annotation
        /** @var $annotation Inject|null */
        try {
            $annotation = $this->getAnnotationReader()->getMethodAnnotation($method, 'DI\Annotation\Inject');
        } catch (AnnotationException $e) {
            throw new AnnotationException(sprintf(
                '@Inject annotation on %s::%s is malformed. %s',
                $method->getDeclaringClass()->getName(),
                $method->getName(),
                $e->getMessage()
            ), 0, $e);
        }
        $annotationParameters = $annotation ? $annotation->getParameters() : [];

        // @Inject on constructor is implicit
        if (! ($annotation || $method->isConstructor())) {
            return null;
        }

        $parameters = [];
        foreach ($method->getParameters() as $index => $parameter) {
            $entryName = $this->getMethodParameter($index, $parameter, $annotationParameters);

            if ($entryName !== null) {
                $parameters[$index] = new EntryReference($entryName);
            }
        }

        if ($method->isConstructor()) {
            return MethodInjection::constructor($parameters);
        } else {
            return new MethodInjection($method->getName(), $parameters);
        }
    }

    /**
     * @param int                 $parameterIndex
     * @param ReflectionParameter $parameter
     * @param array               $annotationParameters
     *
     * @return string|null Entry name or null if not found.
     */
    private function getMethodParameter($parameterIndex, ReflectionParameter $parameter, array $annotationParameters)
    {
        // @Inject has definition for this parameter (by index, or by name)
        if (isset($annotationParameters[$parameterIndex])) {
            return $annotationParameters[$parameterIndex];
        }
        if (isset($annotationParameters[$parameter->getName()])) {
            return $annotationParameters[$parameter->getName()];
        }

        // Skip optional parameters if not explicitly defined
        if ($parameter->isOptional()) {
            return null;
        }

        // Try to use the type-hinting
        $parameterClass = $parameter->getClass();
        if ($parameterClass) {
            return $parameterClass->getName();
        }

        // Last resort, look for @param tag
        return $this->getPhpDocReader()->getParameterClass($parameter);
    }

    /**
     * @return Reader The annotation reader
     */
    public function getAnnotationReader()
    {
        if ($this->annotationReader === null) {
            AnnotationRegistry::registerAutoloadNamespace('DI\Annotation', __DIR__ . '/../../../');
            $this->annotationReader = new SimpleAnnotationReader();
            $this->annotationReader->addNamespace('DI\Annotation');
        }

        return $this->annotationReader;
    }

    /**
     * @return PhpDocReader
     */
    private function getPhpDocReader()
    {
        if ($this->phpDocReader === null) {
            $this->phpDocReader = new PhpDocReader($this->ignorePhpDocErrors);
        }

        return $this->phpDocReader;
    }

    private function readInjectableAnnotation(ReflectionClass $class, ObjectDefinition $definition)
    {
        try {
            /** @var $annotation Injectable|null */
            $annotation = $this->getAnnotationReader()
                ->getClassAnnotation($class, 'DI\Annotation\Injectable');
        } catch (UnexpectedValueException $e) {
            throw new DefinitionException(sprintf(
                'Error while reading @Injectable on %s: %s',
                $class->getName(),
                $e->getMessage()
            ), 0, $e);
        }

        if (! $annotation) {
            return;
        }

        if ($annotation->getScope()) {
            $definition->setScope($annotation->getScope());
        }
        if ($annotation->isLazy() !== null) {
            $definition->setLazy($annotation->isLazy());
        }
    }
}
<?php

namespace DI\Definition\Source;

use DI\Definition\Definition;

/**
 * Describes a definition source to which we can add new definitions.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
interface MutableDefinitionSource extends DefinitionSource
{
    public function addDefinition(Definition $definition);
}
<?php

namespace DI\Definition\Source;

use DI\Definition\ArrayDefinition;
use DI\Definition\Definition;
use DI\Definition\FactoryDefinition;
use DI\Definition\Helper\DefinitionHelper;
use DI\Definition\ObjectDefinition;
use DI\Definition\ValueDefinition;

/**
 * Reads DI definitions from a PHP array.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class DefinitionArray implements DefinitionSource, MutableDefinitionSource
{
    const WILDCARD = '*';
    /**
     * Matches anything except "\".
     */
    const WILDCARD_PATTERN = '([^\\\\]+)';

    /**
     * DI definitions in a PHP array.
     * @var array
     */
    private $definitions = [];

    /**
     * Cache of wildcard definitions.
     * @var array
     */
    private $wildcardDefinitions;

    /**
     * @param array $definitions
     */
    public function __construct(array $definitions = [])
    {
        $this->definitions = $definitions;
    }

    /**
     * @param array $definitions DI definitions in a PHP array indexed by the definition name.
     */
    public function addDefinitions(array $definitions)
    {
        // The newly added data prevails
        // "for keys that exist in both arrays, the elements from the left-hand array will be used"
        $this->definitions = $definitions + $this->definitions;

        // Clear cache
        $this->wildcardDefinitions = null;
    }

    /**
     * {@inheritdoc}
     */
    public function addDefinition(Definition $definition)
    {
        $this->definitions[$definition->getName()] = $definition;

        // Clear cache
        $this->wildcardDefinitions = null;
    }

    /**
     * {@inheritdoc}
     */
    public function getDefinition($name)
    {
        // Look for the definition by name
        if (array_key_exists($name, $this->definitions)) {
            return $this->castDefinition($this->definitions[$name], $name);
        }

        // Build the cache of wildcard definitions
        if ($this->wildcardDefinitions === null) {
            $this->wildcardDefinitions = [];
            foreach ($this->definitions as $key => $definition) {
                if (strpos($key, self::WILDCARD) !== false) {
                    $this->wildcardDefinitions[$key] = $definition;
                }
            }
        }

        // Look in wildcards definitions
        foreach ($this->wildcardDefinitions as $key => $definition) {
            // Turn the pattern into a regex
            $key = preg_quote($key);
            $key = '#' . str_replace('\\' . self::WILDCARD, self::WILDCARD_PATTERN, $key) . '#';
            if (preg_match($key, $name, $matches) === 1) {
                $definition = $this->castDefinition($definition, $name);

                // For a class definition, we replace * in the class name with the matches
                // *Interface -> *Impl => FooInterface -> FooImpl
                if ($definition instanceof ObjectDefinition) {
                    array_shift($matches);
                    $definition->setClassName(
                        $this->replaceWildcards($definition->getClassName(), $matches)
                    );
                }

                return $definition;
            }
        }

        return null;
    }

    /**
     * @param mixed  $definition
     * @param string $name
     * @return Definition
     */
    private function castDefinition($definition, $name)
    {
        if ($definition instanceof DefinitionHelper) {
            $definition = $definition->getDefinition($name);
        } elseif (is_array($definition)) {
            $definition = new ArrayDefinition($name, $definition);
        } elseif ($definition instanceof \Closure) {
            $definition = new FactoryDefinition($name, $definition);
        } elseif (! $definition instanceof Definition) {
            $definition = new ValueDefinition($name, $definition);
        }

        return $definition;
    }

    /**
     * Replaces all the wildcards in the string with the given replacements.
     * @param string   $string
     * @param string[] $replacements
     * @return string
     */
    private function replaceWildcards($string, array $replacements)
    {
        foreach ($replacements as $replacement) {
            $pos = strpos($string, self::WILDCARD);
            if ($pos !== false) {
                $string = substr_replace($string, $replacement, $pos, 1);
            }
        }

        return $string;
    }
}
<?php

namespace DI\Definition;

use DI\Scope;

/**
 * Definition of a value or class with a factory.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class FactoryDefinition implements Definition
{
    /**
     * Entry name.
     * @var string
     */
    private $name;

    /**
     * @var string
     */
    private $scope;

    /**
     * Callable that returns the value.
     * @var callable
     */
    private $factory;

    /**
     * Factory parameters.
     * @var array
     */
    private $parameters = [];

    /**
     * @param string      $name       Entry name
     * @param callable    $factory    Callable that returns the value associated to the entry name.
     * @param string|null $scope
     * @param array       $parameters Parameters to be passed to the callable
     */
    public function __construct($name, $factory, $scope = null, $parameters = [])
    {
        $this->name = $name;
        $this->factory = $factory;
        $this->scope = $scope;
        $this->parameters = $parameters;
    }

    /**
     * @return string Entry name.
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * Default scope is singleton: the callable is called once and the result is shared.
     *
     * {@inheritdoc}
     */
    public function getScope()
    {
        return $this->scope ?: Scope::SINGLETON;
    }

    /**
     * @return callable Callable that returns the value associated to the entry name.
     */
    public function getCallable()
    {
        return $this->factory;
    }

    /**
     * @return array Array containing the parameters to be passed to the callable, indexed by name.
     */
    public function getParameters()
    {
        return $this->parameters;
    }

    public function __toString()
    {
        return 'Factory';
    }
}
<?php

namespace DI\Definition;

use DI\Factory\RequestedEntry;

/**
 * Definition.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
interface Definition extends RequestedEntry
{
    /**
     * Returns the name of the entry in the container.
     *
     * @return string
     */
    public function getName();

    /**
     * Returns the scope of the entry.
     *
     * @return string
     */
    public function getScope();

    /**
     * Definitions can be cast to string for debugging information.
     *
     * This method is not enforced by the interface yet for backward
     * compatibility.
     */
    // public function __toString();
}
<?php

namespace DI\Definition;

use DI\Definition\Helper\DefinitionHelper;
use DI\Scope;

/**
 * Defines a reference to an environment variable, with fallback to a default
 * value if the environment variable is not defined.
 *
 * @author James Harris <james.harris@icecave.com.au>
 */
class EnvironmentVariableDefinition implements CacheableDefinition
{
    /**
     * Entry name.
     * @var string
     */
    private $name;

    /**
     * The name of the environment variable.
     * @var string
     */
    private $variableName;

    /**
     * Whether or not the environment variable definition is optional.
     *
     * If true and the environment variable given by $variableName has not been
     * defined, $defaultValue is used.
     *
     * @var bool
     */
    private $isOptional;

    /**
     * The default value to use if the environment variable is optional and not provided.
     * @var mixed
     */
    private $defaultValue;

    /**
     * @var string|null
     */
    private $scope;

    /**
     * @param string $name Entry name
     * @param string $variableName The name of the environment variable
     * @param bool $isOptional Whether or not the environment variable definition is optional
     * @param mixed $defaultValue The default value to use if the environment variable is optional and not provided
     */
    public function __construct($name, $variableName, $isOptional = false, $defaultValue = null)
    {
        $this->name = $name;
        $this->variableName = $variableName;
        $this->isOptional = $isOptional;
        $this->defaultValue = $defaultValue;
    }

    /**
     * @return string Entry name
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * @return string The name of the environment variable
     */
    public function getVariableName()
    {
        return $this->variableName;
    }

    /**
     * @return bool Whether or not the environment variable definition is optional
     */
    public function isOptional()
    {
        return $this->isOptional;
    }

    /**
     * @return mixed The default value to use if the environment variable is optional and not provided
     */
    public function getDefaultValue()
    {
        return $this->defaultValue;
    }

    /**
     * @param string $scope
     */
    public function setScope($scope)
    {
        $this->scope = $scope;
    }

    /**
     * {@inheritdoc}
     */
    public function getScope()
    {
        return $this->scope ?: Scope::SINGLETON;
    }

    public function __toString()
    {
        $str = '    variable = ' . $this->variableName . PHP_EOL
            . '    optional = ' . ($this->isOptional ? 'yes' : 'no');

        if ($this->isOptional) {
            if ($this->defaultValue instanceof DefinitionHelper) {
                $nestedDefinition = (string) $this->defaultValue->getDefinition('');
                $defaultValueStr = str_replace(PHP_EOL, PHP_EOL . '    ', $nestedDefinition);
            } else {
                $defaultValueStr = var_export($this->defaultValue, true);
            }

            $str .= PHP_EOL . '    default = ' . $defaultValueStr;
        }

        return sprintf('Environment variable (' . PHP_EOL . '%s' . PHP_EOL . ')', $str);
    }
}
<?php

namespace DI\Definition;

use DI\Scope;
use Psr\Container\ContainerInterface;

/**
 * Defines an alias from an entry to another.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class AliasDefinition implements CacheableDefinition, SelfResolvingDefinition
{
    /**
     * Entry name.
     * @var string
     */
    private $name;

    /**
     * Name of the target entry.
     * @var string
     */
    private $targetEntryName;

    /**
     * @param string $name            Entry name
     * @param string $targetEntryName Name of the target entry
     */
    public function __construct($name, $targetEntryName)
    {
        $this->name = $name;
        $this->targetEntryName = $targetEntryName;
    }

    /**
     * @return string Entry name
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * {@inheritdoc}
     */
    public function getScope()
    {
        return Scope::PROTOTYPE;
    }

    /**
     * @return string
     */
    public function getTargetEntryName()
    {
        return $this->targetEntryName;
    }

    public function resolve(ContainerInterface $container)
    {
        return $container->get($this->getTargetEntryName());
    }

    public function isResolvable(ContainerInterface $container)
    {
        return $container->has($this->getTargetEntryName());
    }

    public function __toString()
    {
        return sprintf(
            'get(%s)',
            $this->targetEntryName
        );
    }
}
<?php

namespace DI\Definition;

use DI\DependencyException;
use DI\Scope;
use Psr\Container\ContainerInterface;
use Psr\Container\NotFoundExceptionInterface;

/**
 * Definition of a string composed of other strings.
 *
 * @since 5.0
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class StringDefinition implements Definition, SelfResolvingDefinition
{
    /**
     * Entry name.
     * @var string
     */
    private $name;

    /**
     * @var string
     */
    private $expression;

    /**
     * @param string $name       Entry name
     * @param string $expression
     */
    public function __construct($name, $expression)
    {
        $this->name = $name;
        $this->expression = $expression;
    }

    /**
     * @return string Entry name
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * {@inheritdoc}
     */
    public function getScope()
    {
        return Scope::SINGLETON;
    }

    /**
     * @return string
     */
    public function getExpression()
    {
        return $this->expression;
    }

    public function resolve(ContainerInterface $container)
    {
        $expression = $this->expression;

        $result = preg_replace_callback('#\{([^\{\}]+)\}#', function (array $matches) use ($container) {
            try {
                return $container->get($matches[1]);
            } catch (NotFoundExceptionInterface $e) {
                throw new DependencyException(sprintf(
                    "Error while parsing string expression for entry '%s': %s",
                    $this->getName(),
                    $e->getMessage()
                ), 0, $e);
            }
        }, $expression);

        if ($result === null) {
            throw new \RuntimeException(sprintf('An unknown error occurred while parsing the string definition: \'%s\'', $expression));
        }

        return $result;
    }

    public function isResolvable(ContainerInterface $container)
    {
        return true;
    }

    public function __toString()
    {
        return $this->expression;
    }
}
<?php

namespace DI\Definition;

/**
 * A definition that has a sub-definition.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
interface HasSubDefinition extends Definition
{
    /**
     * @return string
     */
    public function getSubDefinitionName();

    /**
     * @param Definition $definition
     */
    public function setSubDefinition(Definition $definition);
}
<?php

namespace DI\Definition;

use DI\Definition\Exception\DefinitionException;

/**
 * Extends an array definition by adding new elements into it.
 *
 * @since 5.0
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ArrayDefinitionExtension extends ArrayDefinition implements HasSubDefinition
{
    /**
     * @var ArrayDefinition
     */
    private $subDefinition;

    /**
     * {@inheritdoc}
     */
    public function getValues()
    {
        if (! $this->subDefinition) {
            return parent::getValues();
        }

        return array_merge($this->subDefinition->getValues(), parent::getValues());
    }

    /**
     * @return string
     */
    public function getSubDefinitionName()
    {
        return $this->getName();
    }

    /**
     * {@inheritdoc}
     */
    public function setSubDefinition(Definition $definition)
    {
        if (! $definition instanceof ArrayDefinition) {
            throw new DefinitionException(sprintf(
                'Definition %s tries to add array entries but the previous definition is not an array',
                $this->getName()
            ));
        }

        $this->subDefinition = $definition;
    }
}
<?php

namespace DI\Definition;

/**
 * Factory that decorates a sub-definition.
 *
 * @since 5.0
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class DecoratorDefinition extends FactoryDefinition implements Definition, HasSubDefinition
{
    /**
     * @var Definition
     */
    private $decorated;

    /**
     * @return string
     */
    public function getSubDefinitionName()
    {
        return $this->getName();
    }

    /**
     * @param Definition $definition
     */
    public function setSubDefinition(Definition $definition)
    {
        $this->decorated = $definition;
    }

    /**
     * @return Definition
     */
    public function getDecoratedDefinition()
    {
        return $this->decorated;
    }

    public function __toString()
    {
        return 'Decorate(' . $this->getSubDefinitionName() . ')';
    }
}
<?php

namespace DI\Definition;

use DI\Scope;

/**
 * Defines injections on an existing class instance.
 *
 * @since  5.0
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class InstanceDefinition implements Definition
{
    /**
     * Instance on which to inject dependencies.
     *
     * @var object
     */
    private $instance;

    /**
     * @var ObjectDefinition
     */
    private $objectDefinition;

    /**
     * @param object          $instance
     * @param ObjectDefinition $objectDefinition
     */
    public function __construct($instance, ObjectDefinition $objectDefinition)
    {
        $this->instance = $instance;
        $this->objectDefinition = $objectDefinition;
    }

    /**
     * {@inheritdoc}
     */
    public function getName()
    {
        // Name are superfluous for instance definitions
        return '';
    }

    /**
     * {@inheritdoc}
     */
    public function getScope()
    {
        return Scope::PROTOTYPE;
    }

    /**
     * @return object
     */
    public function getInstance()
    {
        return $this->instance;
    }

    /**
     * @return ObjectDefinition
     */
    public function getObjectDefinition()
    {
        return $this->objectDefinition;
    }
}
<?php

namespace DI\Definition;

use DI\Definition\Helper\DefinitionHelper;
use DI\Scope;

/**
 * Definition of an array containing values or references.
 *
 * @since 5.0
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ArrayDefinition implements Definition
{
    /**
     * Entry name.
     * @var string
     */
    private $name;

    /**
     * @var array
     */
    private $values;

    /**
     * @param string $name   Entry name
     * @param array  $values
     */
    public function __construct($name, array $values)
    {
        $this->name = $name;
        $this->values = $values;
    }

    /**
     * @return string Entry name
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * {@inheritdoc}
     */
    public function getScope()
    {
        return Scope::SINGLETON;
    }

    /**
     * @return array
     */
    public function getValues()
    {
        return $this->values;
    }

    public function __toString()
    {
        $str = '[' . PHP_EOL;

        foreach ($this->values as $key => $value) {
            if (is_string($key)) {
                $key = "'" . $key . "'";
            }

            $str .= '    ' . $key . ' => ';

            if ($value instanceof DefinitionHelper) {
                $str .= str_replace(PHP_EOL, PHP_EOL . '    ', $value->getDefinition(''));
            } else {
                $str .= var_export($value, true);
            }

            $str .= ',' . PHP_EOL;
        }

        return $str . ']';
    }
}
<?php

namespace DI\Definition\Helper;

use DI\Definition\ArrayDefinitionExtension;

/**
 * Helps extending the definition of an array.
 *
 * For example you can add new entries to the array.
 *
 * @since 5.0
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ArrayDefinitionExtensionHelper implements DefinitionHelper
{
    /**
     * @var array
     */
    private $values = [];

    /**
     * @param array $values Values to add to the array.
     */
    public function __construct(array $values)
    {
        $this->values = $values;
    }

    /**
     * @param string $entryName Container entry name
     *
     * @return ArrayDefinitionExtension
     */
    public function getDefinition($entryName)
    {
        return new ArrayDefinitionExtension($entryName, $this->values);
    }
}
<?php

namespace DI\Definition\Helper;

use DI\Definition\Exception\DefinitionException;
use DI\Definition\ObjectDefinition;
use DI\Definition\ObjectDefinition\MethodInjection;
use DI\Definition\ObjectDefinition\PropertyInjection;

/**
 * Helps defining how to create an instance of a class.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ObjectDefinitionHelper implements DefinitionHelper
{
    /**
     * @var string|null
     */
    private $className;

    /**
     * @var bool|null
     */
    private $lazy;

    /**
     * @var string|null
     */
    private $scope;

    /**
     * Array of constructor parameters.
     * @var array
     */
    private $constructor = [];

    /**
     * Array of properties and their value.
     * @var array
     */
    private $properties = [];

    /**
     * Array of methods and their parameters.
     * @var array
     */
    private $methods = [];

    /**
     * Helper for defining an object.
     *
     * @param string|null $className Class name of the object.
     *                               If null, the name of the entry (in the container) will be used as class name.
     */
    public function __construct($className = null)
    {
        $this->className = $className;
    }

    /**
     * Define the entry as lazy.
     *
     * A lazy entry is created only when it is used, a proxy is injected instead.
     *
     * @return ObjectDefinitionHelper
     */
    public function lazy()
    {
        $this->lazy = true;

        return $this;
    }

    /**
     * Defines the scope of the entry.
     *
     * @param string $scope
     *
     * @return ObjectDefinitionHelper
     */
    public function scope($scope)
    {
        $this->scope = $scope;

        return $this;
    }

    /**
     * Defines the arguments to use to call the constructor.
     *
     * This method takes a variable number of arguments, example:
     *     ->constructor($param1, $param2, $param3)
     *
     * @param mixed ... Parameters to use for calling the constructor of the class.
     *
     * @return ObjectDefinitionHelper
     */
    public function constructor()
    {
        $this->constructor = func_get_args();

        return $this;
    }

    /**
     * Defines a value for a specific argument of the constructor.
     *
     * This method is usually used together with annotations or autowiring, when a parameter
     * is not (or cannot be) type-hinted. Using this method instead of constructor() allows to
     * avoid defining all the parameters (letting them being resolved using annotations or autowiring)
     * and only define one.
     *
     * @param string $parameter Parameter for which the value will be given.
     * @param mixed  $value     Value to give to this parameter.
     *
     * @return ObjectDefinitionHelper
     */
    public function constructorParameter($parameter, $value)
    {
        $this->constructor[$parameter] = $value;

        return $this;
    }

    /**
     * Defines a value to inject in a property of the object.
     *
     * @param string $property Entry in which to inject the value.
     * @param mixed  $value    Value to inject in the property.
     *
     * @return ObjectDefinitionHelper
     */
    public function property($property, $value)
    {
        $this->properties[$property] = $value;

        return $this;
    }

    /**
     * Defines a method to call and the arguments to use.
     *
     * This method takes a variable number of arguments after the method name, example:
     *
     *     ->method('myMethod', $param1, $param2)
     *
     * Can be used multiple times to declare multiple calls.
     *
     * @param string $method Name of the method to call.
     * @param mixed  ...     Parameters to use for calling the method.
     *
     * @return ObjectDefinitionHelper
     */
    public function method($method)
    {
        $args = func_get_args();
        array_shift($args);

        if (! isset($this->methods[$method])) {
            $this->methods[$method] = [];
        }

        $this->methods[$method][] = $args;

        return $this;
    }

    /**
     * Defines a method to call and a value for a specific argument.
     *
     * This method is usually used together with annotations or autowiring, when a parameter
     * is not (or cannot be) type-hinted. Using this method instead of method() allows to
     * avoid defining all the parameters (letting them being resolved using annotations or
     * autowiring) and only define one.
     *
     * If multiple calls to the method have been configured already (e.g. in a previous definition)
     * then this method only overrides the parameter for the *first* call.
     *
     * @param string $method    Name of the method to call.
     * @param string $parameter Name or index of the parameter for which the value will be given.
     * @param mixed  $value     Value to give to this parameter.
     *
     * @return ObjectDefinitionHelper
     */
    public function methodParameter($method, $parameter, $value)
    {
        // Special case for the constructor
        if ($method === '__construct') {
            $this->constructor[$parameter] = $value;

            return $this;
        }

        if (! isset($this->methods[$method])) {
            $this->methods[$method] = [0 => []];
        }

        $this->methods[$method][0][$parameter] = $value;

        return $this;
    }

    /**
     * {@inheritdoc}
     */
    public function getDefinition($entryName)
    {
        $definition = new ObjectDefinition($entryName, $this->className);

        if ($this->lazy !== null) {
            $definition->setLazy($this->lazy);
        }
        if ($this->scope !== null) {
            $definition->setScope($this->scope);
        }

        if (! empty($this->constructor)) {
            $parameters = $this->fixParameters($definition, '__construct', $this->constructor);
            $constructorInjection = MethodInjection::constructor($parameters);
            $definition->setConstructorInjection($constructorInjection);
        }

        if (! empty($this->properties)) {
            foreach ($this->properties as $property => $value) {
                $definition->addPropertyInjection(
                    new PropertyInjection($property, $value)
                );
            }
        }

        if (! empty($this->methods)) {
            foreach ($this->methods as $method => $calls) {
                foreach ($calls as $parameters) {
                    $parameters = $this->fixParameters($definition, $method, $parameters);
                    $methodInjection = new MethodInjection($method, $parameters);
                    $definition->addMethodInjection($methodInjection);
                }
            }
        }

        return $definition;
    }

    /**
     * Fixes parameters indexed by the parameter name -> reindex by position.
     *
     * This is necessary so that merging definitions between sources is possible.
     *
     * @param ObjectDefinition $definition
     * @param string          $method
     * @param array           $parameters
     * @throws DefinitionException
     * @return array
     */
    private function fixParameters(ObjectDefinition $definition, $method, $parameters)
    {
        $fixedParameters = [];

        foreach ($parameters as $index => $parameter) {
            // Parameter indexed by the parameter name, we reindex it with its position
            if (is_string($index)) {
                $callable = [$definition->getClassName(), $method];
                try {
                    $reflectionParameter = new \ReflectionParameter($callable, $index);
                } catch (\ReflectionException $e) {
                    throw DefinitionException::create($definition, sprintf("Parameter with name '%s' could not be found. %s.", $index, $e->getMessage()));
                }

                $index = $reflectionParameter->getPosition();
            }

            $fixedParameters[$index] = $parameter;
        }

        return $fixedParameters;
    }
}
<?php

namespace DI\Definition\Helper;

/**
 * Helps defining container entries.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
interface DefinitionHelper
{
    /**
     * @param string $entryName Container entry name
     * @return \DI\Definition\Definition
     */
    public function getDefinition($entryName);
}
<?php

namespace DI\Definition\Helper;

use DI\Definition\StringDefinition;

/**
 * @since 5.0
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class StringDefinitionHelper implements DefinitionHelper
{
    /**
     * @var string
     */
    private $expression;

    public function __construct($expression)
    {
        $this->expression = $expression;
    }

    /**
     * @param string $entryName Container entry name
     *
     * @return StringDefinition
     */
    public function getDefinition($entryName)
    {
        return new StringDefinition($entryName, $this->expression);
    }
}
<?php

namespace DI\Definition\Helper;

use DI\Definition\DecoratorDefinition;
use DI\Definition\FactoryDefinition;

/**
 * Helps defining how to create an instance of a class using a factory (callable).
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class FactoryDefinitionHelper implements DefinitionHelper
{
    /**
     * @var callable
     */
    private $factory;

    /**
     * @var string|null
     */
    private $scope;

    /**
     * @var bool
     */
    private $decorate;

    /**
     * @var array
     */
    private $parameters = [];

    /**
     * @param callable $factory
     * @param bool     $decorate Is the factory decorating a previous definition?
     */
    public function __construct($factory, $decorate = false)
    {
        $this->factory = $factory;
        $this->decorate = $decorate;
    }

    /**
     * Defines the scope of the entry.
     *
     * @param string $scope
     *
     * @return FactoryDefinitionHelper
     */
    public function scope($scope)
    {
        $this->scope = $scope;

        return $this;
    }

    /**
     * @param string $entryName Container entry name
     * @return FactoryDefinition
     */
    public function getDefinition($entryName)
    {
        if ($this->decorate) {
            return new DecoratorDefinition($entryName, $this->factory, $this->scope, $this->parameters);
        }

        return new FactoryDefinition($entryName, $this->factory, $this->scope, $this->parameters);
    }

    /**
     * Defines arguments to pass to the factory.
     *
     * Because factory methods do not yet support annotations or autowiring, this method
     * should be used to define all parameters except the ContainerInterface and RequestedEntry.
     *
     * Multiple calls can be made to the method to override individual values.
     *
     * @param string $parameter Name or index of the parameter for which the value will be given.
     * @param mixed  $value     Value to give to this parameter.
     *
     * @return FactoryDefinitionHelper
     */
    public function parameter($parameter, $value)
    {
        $this->parameters[$parameter] = $value;

        return $this;
    }
}
<?php

namespace DI\Definition\Helper;

use DI\Definition\ValueDefinition;

/**
 * Helps defining a value.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ValueDefinitionHelper implements DefinitionHelper
{
    /**
     * @var mixed
     */
    private $value;

    /**
     * @param mixed $value
     */
    public function __construct($value)
    {
        $this->value = $value;
    }

    /**
     * @param string $entryName Container entry name
     * @return ValueDefinition
     */
    public function getDefinition($entryName)
    {
        return new ValueDefinition($entryName, $this->value);
    }
}
<?php

namespace DI\Definition\Helper;

use DI\Definition\EnvironmentVariableDefinition;

/**
 * Helps defining how to create an instance of an environment variable definition.
 *
 * @author James Harris <james.harris@icecave.com.au>
 */
class EnvironmentVariableDefinitionHelper implements DefinitionHelper
{
    /**
     * The name of the environment variable.
     * @var string
     */
    private $variableName;

    /**
     * Whether or not the environment variable definition is optional.
     *
     * If true and the environment variable given by $variableName has not been
     * defined, $defaultValue is used.
     *
     * @var bool
     */
    private $isOptional;

    /**
     * The default value to use if the environment variable is optional and not provided.
     * @var mixed
     */
    private $defaultValue;

    /**
     * @param string  $variableName The name of the environment variable
     * @param bool $isOptional   Whether or not the environment variable definition is optional
     * @param mixed   $defaultValue The default value to use if the environment variable is optional and not provided
     */
    public function __construct($variableName, $isOptional, $defaultValue = null)
    {
        $this->variableName = $variableName;
        $this->isOptional = $isOptional;
        $this->defaultValue = $defaultValue;
    }

    /**
     * @param string $entryName Container entry name
     *
     * @return EnvironmentVariableDefinition
     */
    public function getDefinition($entryName)
    {
        return new EnvironmentVariableDefinition($entryName, $this->variableName, $this->isOptional, $this->defaultValue);
    }
}
<?php

namespace DI\Definition;

use DI\Definition\Dumper\ObjectDefinitionDumper;
use DI\Definition\ObjectDefinition\MethodInjection;
use DI\Definition\ObjectDefinition\PropertyInjection;
use DI\Scope;
use ReflectionClass;

/**
 * Defines how an object can be instantiated.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ObjectDefinition implements Definition, CacheableDefinition, HasSubDefinition
{
    /**
     * Entry name (most of the time, same as $classname).
     * @var string
     */
    private $name;

    /**
     * Class name (if null, then the class name is $name).
     * @var string|null
     */
    private $className;

    /**
     * Constructor parameter injection.
     * @var MethodInjection|null
     */
    private $constructorInjection;

    /**
     * Property injections.
     * @var PropertyInjection[]
     */
    private $propertyInjections = [];

    /**
     * Method calls.
     * @var MethodInjection[][]
     */
    private $methodInjections = [];

    /**
     * @var string|null
     */
    private $scope;

    /**
     * @var bool|null
     */
    private $lazy;

    /**
     * Store if the class exists. Storing it (in cache) avoids recomputing this.
     *
     * @var bool
     */
    private $classExists;

    /**
     * Store if the class is instantiable. Storing it (in cache) avoids recomputing this.
     *
     * @var bool
     */
    private $isInstantiable;

    /**
     * @param string $name Class name
     * @param string $className
     */
    public function __construct($name, $className = null)
    {
        $this->name = (string) $name;
        $this->setClassName($className);
    }

    /**
     * @return string Entry name
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * @param string|null $className
     */
    public function setClassName($className)
    {
        $this->className = $className;

        $this->updateCache();
    }

    /**
     * @return string Class name
     */
    public function getClassName()
    {
        if ($this->className !== null) {
            return $this->className;
        }

        return $this->name;
    }

    /**
     * @return MethodInjection|null
     */
    public function getConstructorInjection()
    {
        return $this->constructorInjection;
    }

    /**
     * @param MethodInjection $constructorInjection
     */
    public function setConstructorInjection(MethodInjection $constructorInjection)
    {
        $this->constructorInjection = $constructorInjection;
    }

    /**
     * @return PropertyInjection[] Property injections
     */
    public function getPropertyInjections()
    {
        return $this->propertyInjections;
    }

    public function addPropertyInjection(PropertyInjection $propertyInjection)
    {
        $className = $propertyInjection->getClassName();
        if ($className) {
            // Index with the class name to avoid collisions between parent and
            // child private properties with the same name
            $key = $className . '::' . $propertyInjection->getPropertyName();
        } else {
            $key = $propertyInjection->getPropertyName();
        }

        $this->propertyInjections[$key] = $propertyInjection;
    }

    /**
     * @return MethodInjection[] Method injections
     */
    public function getMethodInjections()
    {
        // Return array leafs
        $injections = [];
        array_walk_recursive($this->methodInjections, function ($injection) use (&$injections) {
            $injections[] = $injection;
        });

        return $injections;
    }

    /**
     * @param MethodInjection $methodInjection
     */
    public function addMethodInjection(MethodInjection $methodInjection)
    {
        $method = $methodInjection->getMethodName();
        if (! isset($this->methodInjections[$method])) {
            $this->methodInjections[$method] = [];
        }
        $this->methodInjections[$method][] = $methodInjection;
    }

    /**
     * @param string $scope
     */
    public function setScope($scope)
    {
        $this->scope = $scope;
    }

    /**
     * {@inheritdoc}
     */
    public function getScope()
    {
        return $this->scope ?: Scope::SINGLETON;
    }

    /**
     * @param bool|null $lazy
     */
    public function setLazy($lazy)
    {
        $this->lazy = $lazy;
    }

    /**
     * @return bool
     */
    public function isLazy()
    {
        if ($this->lazy !== null) {
            return $this->lazy;
        } else {
            // Default value
            return false;
        }
    }

    /**
     * @return bool
     */
    public function classExists()
    {
        return $this->classExists;
    }

    /**
     * @return bool
     */
    public function isInstantiable()
    {
        return $this->isInstantiable;
    }

    /**
     * {@inheritdoc}
     */
    public function getSubDefinitionName()
    {
        return $this->getClassName();
    }

    /**
     * {@inheritdoc}
     */
    public function setSubDefinition(Definition $definition)
    {
        if (! $definition instanceof self) {
            return;
        }

        // The current prevails
        if ($this->className === null) {
            $this->setClassName($definition->className);
        }
        if ($this->scope === null) {
            $this->scope = $definition->scope;
        }
        if ($this->lazy === null) {
            $this->lazy = $definition->lazy;
        }

        // Merge constructor injection
        $this->mergeConstructorInjection($definition);

        // Merge property injections
        $this->mergePropertyInjections($definition);

        // Merge method injections
        $this->mergeMethodInjections($definition);
    }

    public function __toString()
    {
        return (new ObjectDefinitionDumper)->dump($this);
    }

    private function mergeConstructorInjection(ObjectDefinition $definition)
    {
        if ($definition->getConstructorInjection() !== null) {
            if ($this->constructorInjection !== null) {
                // Merge
                $this->constructorInjection->merge($definition->getConstructorInjection());
            } else {
                // Set
                $this->constructorInjection = $definition->getConstructorInjection();
            }
        }
    }

    private function mergePropertyInjections(ObjectDefinition $definition)
    {
        foreach ($definition->propertyInjections as $propertyName => $propertyInjection) {
            if (! isset($this->propertyInjections[$propertyName])) {
                // Add
                $this->propertyInjections[$propertyName] = $propertyInjection;
            }
        }
    }

    private function mergeMethodInjections(ObjectDefinition $definition)
    {
        foreach ($definition->methodInjections as $methodName => $calls) {
            if (array_key_exists($methodName, $this->methodInjections)) {
                $this->mergeMethodCalls($calls, $methodName);
            } else {
                // Add
                $this->methodInjections[$methodName] = $calls;
            }
        }
    }

    private function mergeMethodCalls(array $calls, $methodName)
    {
        foreach ($calls as $index => $methodInjection) {
            // Merge
            if (array_key_exists($index, $this->methodInjections[$methodName])) {
                // Merge
                $this->methodInjections[$methodName][$index]->merge($methodInjection);
            } else {
                // Add
                $this->methodInjections[$methodName][$index] = $methodInjection;
            }
        }
    }

    private function updateCache()
    {
        $className = $this->getClassName();

        $this->classExists = class_exists($className) || interface_exists($className);

        if (! $this->classExists) {
            $this->isInstantiable = false;

            return;
        }

        $class = new ReflectionClass($className);
        $this->isInstantiable = $class->isInstantiable();
    }
}
<?php

namespace DI\Definition;

use Psr\Container\ContainerInterface;

/**
 * Describes a definition that can resolve itself.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
interface SelfResolvingDefinition
{
    /**
     * Resolve the definition and return the resulting value.
     *
     * @return mixed
     */
    public function resolve(ContainerInterface $container);

    /**
     * Check if a definition can be resolved.
     *
     * @return bool
     */
    public function isResolvable(ContainerInterface $container);
}
<?php

namespace DI\Definition\Exception;

/**
 * Exception in the definitions using annotations.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class AnnotationException extends DefinitionException
{
}
<?php

namespace DI\Definition\Exception;

use DI\Definition\Definition;

/**
 * Invalid DI definitions.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class DefinitionException extends \Exception
{
    public static function create(Definition $definition, $message)
    {
        return new self(sprintf(
            '%s' . PHP_EOL . 'Full definition:' . PHP_EOL . '%s',
            $message,
            (string) $definition
        ));
    }
}
<?php

namespace DI\Definition\Dumper;

use DI\Definition\EntryReference;
use DI\Definition\ObjectDefinition;
use DI\Definition\ObjectDefinition\MethodInjection;
use ReflectionException;

/**
 * Dumps object definitions to string for debugging purposes.
 *
 * @since 4.1
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ObjectDefinitionDumper
{
    /**
     * Returns the definition as string representation.
     *
     * @return string
     */
    public function dump(ObjectDefinition $definition)
    {
        $className = $definition->getClassName();
        $classExist = class_exists($className) || interface_exists($className);

        // Class
        if (! $classExist) {
            $warning = '#UNKNOWN# ';
        } else {
            $class = new \ReflectionClass($className);
            $warning = $class->isInstantiable() ? '' : '#NOT INSTANTIABLE# ';
        }
        $str = sprintf('    class = %s%s', $warning, $className);

        // Scope
        $str .= PHP_EOL . '    scope = ' . $definition->getScope();

        // Lazy
        $str .= PHP_EOL . '    lazy = ' . var_export($definition->isLazy(), true);

        if ($classExist) {
            // Constructor
            $str .= $this->dumpConstructor($className, $definition);

            // Properties
            $str .= $this->dumpProperties($definition);

            // Methods
            $str .= $this->dumpMethods($className, $definition);
        }

        return sprintf('Object (' . PHP_EOL . '%s' . PHP_EOL . ')', $str);
    }

    private function dumpConstructor($className, ObjectDefinition $definition)
    {
        $str = '';

        $constructorInjection = $definition->getConstructorInjection();

        if ($constructorInjection !== null) {
            $parameters = $this->dumpMethodParameters($className, $constructorInjection);

            $str .= sprintf(PHP_EOL . '    __construct(' . PHP_EOL . '        %s' . PHP_EOL . '    )', $parameters);
        }

        return $str;
    }

    private function dumpProperties(ObjectDefinition $definition)
    {
        $str = '';

        foreach ($definition->getPropertyInjections() as $propertyInjection) {
            $value = $propertyInjection->getValue();
            if ($value instanceof EntryReference) {
                $valueStr = sprintf('get(%s)', $value->getName());
            } else {
                $valueStr = var_export($value, true);
            }

            $str .= sprintf(PHP_EOL . '    $%s = %s', $propertyInjection->getPropertyName(), $valueStr);
        }

        return $str;
    }

    private function dumpMethods($className, ObjectDefinition $definition)
    {
        $str = '';

        foreach ($definition->getMethodInjections() as $methodInjection) {
            $parameters = $this->dumpMethodParameters($className, $methodInjection);

            $str .= sprintf(PHP_EOL . '    %s(' . PHP_EOL . '        %s' . PHP_EOL . '    )', $methodInjection->getMethodName(), $parameters);
        }

        return $str;
    }

    private function dumpMethodParameters($className, MethodInjection $methodInjection)
    {
        $methodReflection = new \ReflectionMethod($className, $methodInjection->getMethodName());

        $args = [];

        $definitionParameters = $methodInjection->getParameters();

        foreach ($methodReflection->getParameters() as $index => $parameter) {
            if (array_key_exists($index, $definitionParameters)) {
                $value = $definitionParameters[$index];

                if ($value instanceof EntryReference) {
                    $args[] = sprintf('$%s = get(%s)', $parameter->getName(), $value->getName());
                } else {
                    $args[] = sprintf('$%s = %s', $parameter->getName(), var_export($value, true));
                }
                continue;
            }

            // If the parameter is optional and wasn't specified, we take its default value
            if ($parameter->isOptional()) {
                try {
                    $value = $parameter->getDefaultValue();

                    $args[] = sprintf(
                        '$%s = (default value) %s',
                        $parameter->getName(),
                        var_export($value, true)
                    );
                    continue;
                } catch (ReflectionException $e) {
                    // The default value can't be read through Reflection because it is a PHP internal class
                }
            }

            $args[] = sprintf('$%s = #UNDEFINED#', $parameter->getName());
        }

        return implode(PHP_EOL . '        ', $args);
    }
}
<?php

namespace DI\Definition;

use DI\Scope;
use Psr\Container\ContainerInterface;

/**
 * Definition of a value for dependency injection.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ValueDefinition implements Definition, SelfResolvingDefinition
{
    /**
     * Entry name.
     * @var string
     */
    private $name;

    /**
     * @var mixed
     */
    private $value;

    /**
     * @param string $name Entry name
     * @param mixed $value
     */
    public function __construct($name, $value)
    {
        $this->name = $name;
        $this->value = $value;
    }

    /**
     * @return string Entry name
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * A value definition is like a constant, there is nothing to compute, the value is the same for everyone.
     *
     * {@inheritdoc}
     */
    public function getScope()
    {
        return Scope::SINGLETON;
    }

    /**
     * @return mixed
     */
    public function getValue()
    {
        return $this->value;
    }

    public function resolve(ContainerInterface $container)
    {
        return $this->getValue();
    }

    public function isResolvable(ContainerInterface $container)
    {
        return true;
    }

    public function __toString()
    {
        return sprintf('Value (%s)', var_export($this->value, true));
    }
}
<?php

namespace DI\Definition\Resolver;

use DI\Definition\DecoratorDefinition;
use DI\Definition\Definition;
use DI\Definition\Exception\DefinitionException;
use Psr\Container\ContainerInterface;

/**
 * Resolves a decorator definition to a value.
 *
 * @since 5.0
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class DecoratorResolver implements DefinitionResolver
{
    /**
     * @var ContainerInterface
     */
    private $container;

    /**
     * @var DefinitionResolver
     */
    private $definitionResolver;

    /**
     * The resolver needs a container. This container will be passed to the factory as a parameter
     * so that the factory can access other entries of the container.
     *
     * @param ContainerInterface $container
     * @param DefinitionResolver $definitionResolver Used to resolve nested definitions.
     */
    public function __construct(ContainerInterface $container, DefinitionResolver $definitionResolver)
    {
        $this->container = $container;
        $this->definitionResolver = $definitionResolver;
    }

    /**
     * Resolve a decorator definition to a value.
     *
     * This will call the callable of the definition and pass it the decorated entry.
     *
     * @param DecoratorDefinition $definition
     *
     * {@inheritdoc}
     */
    public function resolve(Definition $definition, array $parameters = [])
    {
        $callable = $definition->getCallable();

        if (! is_callable($callable)) {
            throw new DefinitionException(sprintf(
                'The decorator "%s" is not callable',
                $definition->getName()
            ));
        }

        $decoratedDefinition = $definition->getDecoratedDefinition();

        if (! $decoratedDefinition instanceof Definition) {
            if (! $definition->getSubDefinitionName()) {
                throw new DefinitionException('Decorators cannot be nested in another definition');
            }

            throw new DefinitionException(sprintf(
                'Entry "%s" decorates nothing: no previous definition with the same name was found',
                $definition->getName()
            ));
        }

        $decorated = $this->definitionResolver->resolve($decoratedDefinition, $parameters);

        return call_user_func($callable, $decorated, $this->container);
    }

    /**
     * {@inheritdoc}
     */
    public function isResolvable(Definition $definition, array $parameters = [])
    {
        return true;
    }
}
<?php

namespace DI\Definition\Resolver;

use DI\Definition\Definition;
use DI\Definition\Exception\DefinitionException;
use DI\Proxy\ProxyFactory;
use Psr\Container\ContainerInterface;

/**
 * Dispatches to more specific resolvers.
 *
 * Dynamic dispatch pattern.
 *
 * @since 5.0
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ResolverDispatcher implements DefinitionResolver
{
    /**
     * @var ContainerInterface
     */
    private $container;

    /**
     * @var ProxyFactory
     */
    private $proxyFactory;

    private $selfResolvingResolver;
    private $arrayResolver;
    private $factoryResolver;
    private $decoratorResolver;
    private $objectResolver;
    private $instanceResolver;
    private $envVariableResolver;

    public function __construct(ContainerInterface $container, ProxyFactory $proxyFactory)
    {
        $this->container = $container;
        $this->proxyFactory = $proxyFactory;
    }

    /**
     * Resolve a definition to a value.
     *
     * @param Definition $definition Object that defines how the value should be obtained.
     * @param array      $parameters Optional parameters to use to build the entry.
     *
     * @throws DefinitionException If the definition cannot be resolved.
     *
     * @return mixed Value obtained from the definition.
     */
    public function resolve(Definition $definition, array $parameters = [])
    {
        $definitionResolver = $this->getDefinitionResolver($definition);

        return $definitionResolver->resolve($definition, $parameters);
    }

    /**
     * Check if a definition can be resolved.
     *
     * @param Definition $definition Object that defines how the value should be obtained.
     * @param array      $parameters Optional parameters to use to build the entry.
     *
     * @return bool
     */
    public function isResolvable(Definition $definition, array $parameters = [])
    {
        $definitionResolver = $this->getDefinitionResolver($definition);

        return $definitionResolver->isResolvable($definition, $parameters);
    }

    /**
     * Returns a resolver capable of handling the given definition.
     *
     * @param Definition $definition
     *
     * @throws \RuntimeException No definition resolver was found for this type of definition.
     * @return DefinitionResolver
     */
    private function getDefinitionResolver(Definition $definition)
    {
        switch (true) {
            case $definition instanceof \DI\Definition\SelfResolvingDefinition:
                if (! $this->selfResolvingResolver) {
                    $this->selfResolvingResolver = new SelfResolver($this->container);
                }

                return $this->selfResolvingResolver;
            case $definition instanceof \DI\Definition\ObjectDefinition:
                if (! $this->objectResolver) {
                    $this->objectResolver = new ObjectCreator($this, $this->proxyFactory);
                }

                return $this->objectResolver;
            case $definition instanceof \DI\Definition\DecoratorDefinition:
                if (! $this->decoratorResolver) {
                    $this->decoratorResolver = new DecoratorResolver($this->container, $this);
                }

                return $this->decoratorResolver;
            case $definition instanceof \DI\Definition\FactoryDefinition:
                if (! $this->factoryResolver) {
                    $this->factoryResolver = new FactoryResolver($this->container, $this);
                }

                return $this->factoryResolver;
            case $definition instanceof \DI\Definition\ArrayDefinition:
                if (! $this->arrayResolver) {
                    $this->arrayResolver = new ArrayResolver($this);
                }

                return $this->arrayResolver;
            case $definition instanceof \DI\Definition\EnvironmentVariableDefinition:
                if (! $this->envVariableResolver) {
                    $this->envVariableResolver = new EnvironmentVariableResolver($this);
                }

                return $this->envVariableResolver;
            case $definition instanceof \DI\Definition\InstanceDefinition:
                if (! $this->instanceResolver) {
                    $this->instanceResolver = new InstanceInjector($this, $this->proxyFactory);
                }

                return $this->instanceResolver;
            default:
                throw new \RuntimeException('No definition resolver was configured for definition of type ' . get_class($definition));
        }
    }
}
<?php

namespace DI\Definition\Resolver;

use DI\Definition\ArrayDefinition;
use DI\Definition\Definition;
use DI\Definition\Helper\DefinitionHelper;
use DI\DependencyException;
use Exception;

/**
 * Resolves an array definition to a value.
 *
 * @since 5.0
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ArrayResolver implements DefinitionResolver
{
    /**
     * @var DefinitionResolver
     */
    private $definitionResolver;

    /**
     * @param DefinitionResolver $definitionResolver Used to resolve nested definitions.
     */
    public function __construct(DefinitionResolver $definitionResolver)
    {
        $this->definitionResolver = $definitionResolver;
    }

    /**
     * Resolve an array definition to a value.
     *
     * An array definition can contain simple values or references to other entries.
     *
     * @param ArrayDefinition $definition
     *
     * {@inheritdoc}
     */
    public function resolve(Definition $definition, array $parameters = [])
    {
        $values = $definition->getValues();

        // Resolve nested definitions
        foreach ($values as $key => $value) {
            if ($value instanceof DefinitionHelper) {
                $values[$key] = $this->resolveDefinition($value, $definition, $key);
            }
        }

        return $values;
    }

    /**
     * {@inheritdoc}
     */
    public function isResolvable(Definition $definition, array $parameters = [])
    {
        return true;
    }

    private function resolveDefinition(DefinitionHelper $value, ArrayDefinition $definition, $key)
    {
        try {
            return $this->definitionResolver->resolve($value->getDefinition(''));
        } catch (DependencyException $e) {
            throw $e;
        } catch (Exception $e) {
            throw new DependencyException(sprintf(
                'Error while resolving %s[%s]. %s',
                $definition->getName(),
                $key,
                $e->getMessage()
            ), 0, $e);
        }
    }
}
<?php

namespace DI\Definition\Resolver;

use DI\Definition\Definition;
use DI\Definition\Exception\DefinitionException;
use DI\Definition\FactoryDefinition;
use DI\Definition\Helper\DefinitionHelper;
use DI\Invoker\FactoryParameterResolver;
use Invoker\Exception\NotCallableException;
use Invoker\Exception\NotEnoughParametersException;
use Invoker\Invoker;
use Invoker\ParameterResolver\AssociativeArrayResolver;
use Invoker\ParameterResolver\NumericArrayResolver;
use Invoker\ParameterResolver\ResolverChain;
use Psr\Container\ContainerInterface;

/**
 * Resolves a factory definition to a value.
 *
 * @since 4.0
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class FactoryResolver implements DefinitionResolver
{
    /**
     * @var ContainerInterface
     */
    private $container;

    /**
     * @var Invoker|null
     */
    private $invoker;

    /**
     * @var DefinitionResolver
     */
    private $resolver;

    /**
     * The resolver needs a container. This container will be passed to the factory as a parameter
     * so that the factory can access other entries of the container.
     *
     * @param ContainerInterface $container
     */
    public function __construct(ContainerInterface $container, DefinitionResolver $resolver)
    {
        $this->container = $container;
        $this->resolver = $resolver;
    }

    /**
     * Resolve a factory definition to a value.
     *
     * This will call the callable of the definition.
     *
     * @param FactoryDefinition $definition
     *
     * {@inheritdoc}
     */
    public function resolve(Definition $definition, array $parameters = [])
    {
        if (! $this->invoker) {
            $parameterResolver = new ResolverChain([
               new AssociativeArrayResolver,
               new FactoryParameterResolver($this->container),
               new NumericArrayResolver,
            ]);

            $this->invoker = new Invoker($parameterResolver, $this->container);
        }

        $callable = $definition->getCallable();

        try {
            $providedParams = [$this->container, $definition];
            $extraParams = $this->resolveExtraParams($definition->getParameters());
            $providedParams = array_merge($providedParams, $extraParams);

            return $this->invoker->call($callable, $providedParams);
        } catch (NotCallableException $e) {
            // Custom error message to help debugging
            if (is_string($callable) && class_exists($callable) && method_exists($callable, '__invoke')) {
                throw new DefinitionException(sprintf(
                    'Entry "%s" cannot be resolved: factory %s. Invokable classes cannot be automatically resolved if autowiring is disabled on the container, you need to enable autowiring or define the entry manually.',
                    $definition->getName(),
                    $e->getMessage()
                ));
            }

            throw new DefinitionException(sprintf(
                'Entry "%s" cannot be resolved: factory %s',
                $definition->getName(),
                $e->getMessage()
            ));
        } catch (NotEnoughParametersException $e) {
            throw new DefinitionException(sprintf(
                'Entry "%s" cannot be resolved: %s',
                $definition->getName(),
                $e->getMessage()
            ));
        }
    }

    /**
     * {@inheritdoc}
     */
    public function isResolvable(Definition $definition, array $parameters = [])
    {
        return true;
    }

    private function resolveExtraParams(array $params)
    {
        $resolved = [];
        foreach ($params as $key => $value) {
            if ($value instanceof DefinitionHelper) {
                // As per ObjectCreator::injectProperty, use '' for an anonymous sub-definition
                $value = $value->getDefinition('');
            }
            if (!$value instanceof Definition) {
                $resolved[$key] = $value;
            } else {
                $resolved[$key] = $this->resolver->resolve($value);
            }
        }

        return $resolved;
    }
}
<?php

namespace DI\Definition\Resolver;

use DI\Definition\Definition;
use DI\Definition\Exception\DefinitionException;
use DI\Definition\Helper\DefinitionHelper;
use DI\Definition\ObjectDefinition;
use DI\Definition\ObjectDefinition\PropertyInjection;
use DI\DependencyException;
use DI\Proxy\ProxyFactory;
use Exception;
use ProxyManager\Proxy\LazyLoadingInterface;
use Psr\Container\NotFoundExceptionInterface;
use ReflectionClass;
use ReflectionProperty;

/**
 * Create objects based on an object definition.
 *
 * @since 4.0
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ObjectCreator implements DefinitionResolver
{
    /**
     * @var ProxyFactory
     */
    private $proxyFactory;

    /**
     * @var ParameterResolver
     */
    private $parameterResolver;

    /**
     * @var DefinitionResolver
     */
    private $definitionResolver;

    /**
     * @param DefinitionResolver $definitionResolver Used to resolve nested definitions.
     * @param ProxyFactory       $proxyFactory       Used to create proxies for lazy injections.
     */
    public function __construct(
        DefinitionResolver $definitionResolver,
        ProxyFactory $proxyFactory
    ) {
        $this->definitionResolver = $definitionResolver;
        $this->proxyFactory = $proxyFactory;
        $this->parameterResolver = new ParameterResolver($definitionResolver);
    }

    /**
     * Resolve a class definition to a value.
     *
     * This will create a new instance of the class using the injections points defined.
     *
     * @param ObjectDefinition $definition
     *
     * {@inheritdoc}
     */
    public function resolve(Definition $definition, array $parameters = [])
    {
        // Lazy?
        if ($definition->isLazy()) {
            return $this->createProxy($definition, $parameters);
        }

        return $this->createInstance($definition, $parameters);
    }

    /**
     * The definition is not resolvable if the class is not instantiable (interface or abstract)
     * or if the class doesn't exist.
     *
     * @param ObjectDefinition $definition
     *
     * {@inheritdoc}
     */
    public function isResolvable(Definition $definition, array $parameters = [])
    {
        return $definition->isInstantiable();
    }

    /**
     * Returns a proxy instance.
     *
     * @param ObjectDefinition $definition
     * @param array           $parameters
     *
     * @return LazyLoadingInterface Proxy instance
     */
    private function createProxy(ObjectDefinition $definition, array $parameters)
    {
        /** @noinspection PhpUnusedParameterInspection */
        $proxy = $this->proxyFactory->createProxy(
            $definition->getClassName(),
            function (& $wrappedObject, $proxy, $method, $params, & $initializer) use ($definition, $parameters) {
                $wrappedObject = $this->createInstance($definition, $parameters);
                $initializer = null; // turning off further lazy initialization
                return true;
            }
        );

        return $proxy;
    }

    /**
     * Creates an instance of the class and injects dependencies..
     *
     * @param ObjectDefinition $definition
     * @param array            $parameters      Optional parameters to use to create the instance.
     *
     * @throws DefinitionException
     * @throws DependencyException
     * @return object
     */
    private function createInstance(ObjectDefinition $definition, array $parameters)
    {
        $this->assertClassExists($definition);

        $classname = $definition->getClassName();
        $classReflection = new ReflectionClass($classname);

        $this->assertClassIsInstantiable($definition);

        $constructorInjection = $definition->getConstructorInjection();

        try {
            $args = $this->parameterResolver->resolveParameters(
                $constructorInjection,
                $classReflection->getConstructor(),
                $parameters
            );

            if (count($args) > 0) {
                $object = $classReflection->newInstanceArgs($args);
            } else {
                $object = new $classname;
            }

            $this->injectMethodsAndProperties($object, $definition);
        } catch (NotFoundExceptionInterface $e) {
            throw new DependencyException(sprintf(
                'Error while injecting dependencies into %s: %s',
                $classReflection->getName(),
                $e->getMessage()
            ), 0, $e);
        } catch (DefinitionException $e) {
            throw DefinitionException::create($definition, sprintf(
                'Entry "%s" cannot be resolved: %s',
                $definition->getName(),
                $e->getMessage()
            ));
        }

        if (! $object) {
            throw new DependencyException(sprintf(
                'Entry "%s" cannot be resolved: %s could not be constructed',
                $definition->getName(),
                $classReflection->getName()
            ));
        }

        return $object;
    }

    protected function injectMethodsAndProperties($object, ObjectDefinition $objectDefinition)
    {
        // Property injections
        foreach ($objectDefinition->getPropertyInjections() as $propertyInjection) {
            $this->injectProperty($object, $propertyInjection);
        }

        // Method injections
        foreach ($objectDefinition->getMethodInjections() as $methodInjection) {
            $methodReflection = new \ReflectionMethod($object, $methodInjection->getMethodName());
            $args = $this->parameterResolver->resolveParameters($methodInjection, $methodReflection);

            $methodReflection->invokeArgs($object, $args);
        }
    }

    /**
     * Inject dependencies into properties.
     *
     * @param object            $object            Object to inject dependencies into
     * @param PropertyInjection $propertyInjection Property injection definition
     *
     * @throws DependencyException
     * @throws DefinitionException
     */
    private function injectProperty($object, PropertyInjection $propertyInjection)
    {
        $propertyName = $propertyInjection->getPropertyName();

        $className = $propertyInjection->getClassName();
        $className = $className ?: get_class($object);
        $property = new ReflectionProperty($className, $propertyName);

        $value = $propertyInjection->getValue();

        if ($value instanceof DefinitionHelper) {
            /** @var Definition $nestedDefinition */
            $nestedDefinition = $value->getDefinition('');

            try {
                $value = $this->definitionResolver->resolve($nestedDefinition);
            } catch (DependencyException $e) {
                throw $e;
            } catch (Exception $e) {
                throw new DependencyException(sprintf(
                    'Error while injecting in %s::%s. %s',
                    get_class($object),
                    $propertyName,
                    $e->getMessage()
                ), 0, $e);
            }
        }

        if (! $property->isPublic()) {
            $property->setAccessible(true);
        }
        $property->setValue($object, $value);
    }

    private function assertClassExists(ObjectDefinition $definition)
    {
        if (! $definition->classExists()) {
            throw DefinitionException::create($definition, sprintf(
                'Entry "%s" cannot be resolved: the class doesn\'t exist',
                $definition->getName()
            ));
        }
    }

    private function assertClassIsInstantiable(ObjectDefinition $definition)
    {
        if (! $definition->isInstantiable()) {
            throw DefinitionException::create($definition, sprintf(
                'Entry "%s" cannot be resolved: the class is not instantiable',
                $definition->getName()
            ));
        }
    }
}
<?php

namespace DI\Definition\Resolver;

use DI\Definition\Definition;
use DI\Definition\EnvironmentVariableDefinition;
use DI\Definition\Exception\DefinitionException;
use DI\Definition\Helper\DefinitionHelper;

/**
 * Resolves a environment variable definition to a value.
 *
 * @author James Harris <james.harris@icecave.com.au>
 */
class EnvironmentVariableResolver implements DefinitionResolver
{
    /**
     * @var DefinitionResolver
     */
    private $definitionResolver;

    /**
     * @var callable
     */
    private $variableReader;

    public function __construct(DefinitionResolver $definitionResolver, $variableReader = 'getenv')
    {
        $this->definitionResolver = $definitionResolver;
        $this->variableReader = $variableReader;
    }

    /**
     * Resolve an environment variable definition to a value.
     *
     * @param EnvironmentVariableDefinition $definition
     *
     * {@inheritdoc}
     */
    public function resolve(Definition $definition, array $parameters = [])
    {
        $value = call_user_func($this->variableReader, $definition->getVariableName());

        if (false !== $value) {
            return $value;
        }

        if (!$definition->isOptional()) {
            throw new DefinitionException(sprintf(
                "The environment variable '%s' has not been defined",
                $definition->getVariableName()
            ));
        }

        $value = $definition->getDefaultValue();

        // Nested definition
        if ($value instanceof DefinitionHelper) {
            return $this->definitionResolver->resolve($value->getDefinition(''));
        }

        return $value;
    }

    /**
     * @param EnvironmentVariableDefinition $definition
     *
     * {@inheritdoc}
     */
    public function isResolvable(Definition $definition, array $parameters = [])
    {
        return true;
    }
}
<?php

namespace DI\Definition\Resolver;

use DI\Definition\Exception\DefinitionException;
use DI\Definition\Helper\DefinitionHelper;
use DI\Definition\ObjectDefinition\MethodInjection;
use ReflectionMethod;
use ReflectionParameter;

/**
 * Resolves parameters for a function call.
 *
 * @since  4.2
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ParameterResolver
{
    /**
     * @var DefinitionResolver
     */
    private $definitionResolver;

    /**
     * @param DefinitionResolver $definitionResolver Will be used to resolve nested definitions.
     */
    public function __construct(DefinitionResolver $definitionResolver)
    {
        $this->definitionResolver = $definitionResolver;
    }

    /**
     * @param MethodInjection  $definition
     * @param ReflectionMethod $method
     * @param array            $parameters
     *
     * @throws DefinitionException A parameter has no value defined or guessable.
     * @return array Parameters to use to call the function.
     */
    public function resolveParameters(
        MethodInjection $definition = null,
        ReflectionMethod $method = null,
        array $parameters = []
    ) {
        $args = [];

        if (! $method) {
            return $args;
        }

        $definitionParameters = $definition ? $definition->getParameters() : [];

        foreach ($method->getParameters() as $index => $parameter) {
            if (array_key_exists($parameter->getName(), $parameters)) {
                // Look in the $parameters array
                $value = &$parameters[$parameter->getName()];
            } elseif (array_key_exists($index, $definitionParameters)) {
                // Look in the definition
                $value = &$definitionParameters[$index];
            } else {
                // If the parameter is optional and wasn't specified, we take its default value
                if ($parameter->isOptional()) {
                    $args[] = $this->getParameterDefaultValue($parameter, $method);
                    continue;
                }

                throw new DefinitionException(sprintf(
                    'Parameter $%s of %s has no value defined or guessable',
                    $parameter->getName(),
                    $this->getFunctionName($method)
                ));
            }

            if ($value instanceof DefinitionHelper) {
                $nestedDefinition = $value->getDefinition('');

                // If the container cannot produce the entry, we can use the default parameter value
                if ($parameter->isOptional() && ! $this->definitionResolver->isResolvable($nestedDefinition)) {
                    $value = $this->getParameterDefaultValue($parameter, $method);
                } else {
                    $value = $this->definitionResolver->resolve($nestedDefinition);
                }
            }

            $args[] = &$value;
        }

        return $args;
    }

    /**
     * Returns the default value of a function parameter.
     *
     * @param ReflectionParameter $parameter
     * @param ReflectionMethod    $function
     *
     * @throws DefinitionException Can't get default values from PHP internal classes and functions
     * @return mixed
     */
    private function getParameterDefaultValue(
        ReflectionParameter $parameter,
        ReflectionMethod $function
    ) {
        try {
            return $parameter->getDefaultValue();
        } catch (\ReflectionException $e) {
            throw new DefinitionException(sprintf(
                'The parameter "%s" of %s has no type defined or guessable. It has a default value, '
                . 'but the default value can\'t be read through Reflection because it is a PHP internal class.',
                $parameter->getName(),
                $this->getFunctionName($function)
            ));
        }
    }

    private function getFunctionName(ReflectionMethod $method)
    {
        return $method->getName() . '()';
    }
}
<?php

namespace DI\Definition\Resolver;

use DI\Definition\Definition;
use DI\Definition\Exception\DefinitionException;

/**
 * Resolves a definition to a value.
 *
 * @since 4.0
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
interface DefinitionResolver
{
    /**
     * Resolve a definition to a value.
     *
     * @param Definition $definition Object that defines how the value should be obtained.
     * @param array      $parameters Optional parameters to use to build the entry.
     *
     * @throws DefinitionException If the definition cannot be resolved.
     *
     * @return mixed Value obtained from the definition.
     */
    public function resolve(Definition $definition, array $parameters = []);

    /**
     * Check if a definition can be resolved.
     *
     * @param Definition $definition Object that defines how the value should be obtained.
     * @param array      $parameters Optional parameters to use to build the entry.
     *
     * @return bool
     */
    public function isResolvable(Definition $definition, array $parameters = []);
}
<?php

namespace DI\Definition\Resolver;

use DI\Definition\Definition;
use DI\Definition\InstanceDefinition;
use DI\DependencyException;
use Psr\Container\NotFoundExceptionInterface;

/**
 * Injects dependencies on an existing instance.
 *
 * @since 5.0
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class InstanceInjector extends ObjectCreator
{
    /**
     * Injects dependencies on an existing instance.
     *
     * @param InstanceDefinition $definition
     *
     * {@inheritdoc}
     */
    public function resolve(Definition $definition, array $parameters = [])
    {
        try {
            $this->injectMethodsAndProperties($definition->getInstance(), $definition->getObjectDefinition());
        } catch (NotFoundExceptionInterface $e) {
            $message = sprintf(
                'Error while injecting dependencies into %s: %s',
                get_class($definition->getInstance()),
                $e->getMessage()
            );
            throw new DependencyException($message, 0, $e);
        }
    }

    /**
     * {@inheritdoc}
     */
    public function isResolvable(Definition $definition, array $parameters = [])
    {
        return true;
    }
}
<?php

namespace DI\Definition\Resolver;

use DI\Definition\Definition;
use DI\Definition\SelfResolvingDefinition;
use Psr\Container\ContainerInterface;

/**
 * Resolves self-resolving definitions.
 *
 * @since 5.3
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class SelfResolver implements DefinitionResolver
{
    /**
     * @var ContainerInterface
     */
    private $container;

    public function __construct(ContainerInterface $container)
    {
        $this->container = $container;
    }

    /**
     * @param SelfResolvingDefinition $definition
     *
     * {@inheritdoc}
     */
    public function resolve(Definition $definition, array $parameters = [])
    {
        return $definition->resolve($this->container);
    }

    /**
     * @param SelfResolvingDefinition $definition
     *
     * {@inheritdoc}
     */
    public function isResolvable(Definition $definition, array $parameters = [])
    {
        return $definition->isResolvable($this->container);
    }
}
<?php

namespace DI;

use Interop\Container\Exception\ContainerException;

/**
 * Exception for the Container.
 */
class DependencyException extends \Exception implements ContainerException
{
}
<?php

namespace DI;

/**
 * Invoke a callable.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
interface InvokerInterface extends \Invoker\InvokerInterface
{
}
<?php

namespace DI\Factory;

/**
 * Represents the container entry that was requested.
 *
 * Implementations of this interface can be injected in factory parameters in order
 * to know what was the name of the requested entry.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
interface RequestedEntry
{
    /**
     * Returns the name of the entry that was requested by the container.
     *
     * @return string
     */
    public function getName();
}
<?php
/**
 * FrontYAML
 *
 * @copyright Matthieu Napoli http://mnapoli.fr
 * @license   http://www.opensource.org/licenses/mit-license.php MIT (see the LICENSE file)
 */

namespace Mni\FrontYAML;

/**
 * Document.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class Document
{
    /**
     * @var mixed
     */
    private $yaml;

    /**
     * @var string
     */
    private $content;

    /**
     * @param mixed  $yaml    YAML content.
     * @param string $content Content of the document.
     */
    public function __construct($yaml, $content)
    {
        $this->yaml = $yaml;
        $this->content = $content;
    }

    /**
     * @return mixed YAML content.
     */
    public function getYAML()
    {
        return $this->yaml;
    }

    /**
     * @return string Content of the document.
     */
    public function getContent()
    {
        return $this->content;
    }
}
<?php
/**
 * FrontYAML
 *
 * @copyright Matthieu Napoli http://mnapoli.fr
 * @license   http://www.opensource.org/licenses/mit-license.php MIT (see the LICENSE file)
 */

namespace Mni\FrontYAML;

use Mni\FrontYAML\Bridge\Parsedown\ParsedownParser;
use Mni\FrontYAML\Bridge\Symfony\SymfonyYAMLParser;
use Mni\FrontYAML\Markdown\MarkdownParser;
use Mni\FrontYAML\YAML\YAMLParser;

/**
 * YAML Front matter parser
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class Parser
{
    /**
     * @var YAMLParser
     */
    private $yamlParser;

    /**
     * @var MarkdownParser
     */
    private $markdownParser;

    /**
     * @var array
     */
    private $startSep;

    /**
     * @var array
     */
    private $endSep;

    public function __construct(
        YAMLParser $yamlParser = null,
        MarkdownParser $markdownParser = null,
        $startSep = '---',
        $endSep = '---'
    ) {
        $this->yamlParser = $yamlParser ?: new SymfonyYAMLParser();
        $this->markdownParser = $markdownParser ?: new ParsedownParser();
        $this->startSep = array_filter((array) $startSep, 'is_string') ?: array('---');
        $this->endSep = array_filter((array) $endSep, 'is_string') ?: array('---');
    }

    /**
     * Parse a string containing the YAML front matter and the markdown.
     *
     * @param string $str
     * @param bool   $parseMarkdown Should the Markdown be turned into HTML?
     *
     * @return Document
     */
    public function parse($str, $parseMarkdown = true)
    {
        $yaml = null;

        $quote = function ($str) {
            return preg_quote($str, "~");
        };

        $regex = '~^('
            .implode('|', array_map($quote, $this->startSep)) # $matches[1] start separator
            ."){1}[\r\n|\n]*(.*?)[\r\n|\n]+("                       # $matches[2] between separators
            .implode('|', array_map($quote, $this->endSep))   # $matches[3] end separator
            ."){1}[\r\n|\n]*(.*)$~s";                               # $matches[4] document content

        if (preg_match($regex, $str, $matches) === 1) { // There is a Front matter
            $yaml = trim($matches[2]) !== '' ? $this->yamlParser->parse(trim($matches[2])) : null;
            $str = ltrim($matches[4]);
        }

        return new Document($yaml, $parseMarkdown ? $this->markdownParser->parse($str) : $str);
    }
}
<?php
/**
 * FrontYAML
 *
 * @copyright Matthieu Napoli http://mnapoli.fr
 * @license   http://www.opensource.org/licenses/mit-license.php MIT (see the LICENSE file)
 */

namespace Mni\FrontYAML\Bridge\Parsedown;

use Mni\FrontYAML\Markdown\MarkdownParser;
use Parsedown;

/**
 * Bridge to the Parsedown Markdown parser
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class ParsedownParser implements MarkdownParser
{
    public function __construct(Parsedown $parsedown = null)
    {
        $this->parser = $parsedown ?: new Parsedown();
    }

    /**
     * {@inheritdoc}
     */
    public function parse($markdown)
    {
        return $this->parser->parse($markdown);
    }
}
<?php
/**
 * FrontYAML
 *
 * @copyright Matthieu Napoli http://mnapoli.fr
 * @license   http://www.opensource.org/licenses/mit-license.php MIT (see the LICENSE file)
 */

namespace Mni\FrontYAML\Bridge\Symfony;

use Mni\FrontYAML\YAML\YAMLParser;
use Symfony\Component\Yaml\Parser;

/**
 * Bridge to the Symfony YAML parser
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class SymfonyYAMLParser implements YAMLParser
{
    /**
     * @var Parser
     */
    private $parser;

    public function __construct()
    {
        $this->parser = new Parser();
    }

    /**
     * {@inheritdoc}
     */
    public function parse($yaml)
    {
        return $this->parser->parse($yaml);
    }
}
<?php
/**
 * FrontYAML
 *
 * @copyright Matthieu Napoli http://mnapoli.fr
 * @license   http://www.opensource.org/licenses/mit-license.php MIT (see the LICENSE file)
 */

namespace Mni\FrontYAML\Bridge\CommonMark;

use League\CommonMark\CommonMarkConverter;
use Mni\FrontYAML\Markdown\MarkdownParser;

/**
 * Bridge to the League CommonMark parser
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class CommonMarkParser implements MarkdownParser
{
    public function __construct(CommonMarkConverter $commonMarkConverter = null)
    {
        $this->parser = $commonMarkConverter ?: new CommonMarkConverter();
    }

    /**
     * {@inheritdoc}
     */
    public function parse($markdown)
    {
        return $this->parser->convertToHtml($markdown);
    }
}
<?php
/**
 * FrontYAML
 *
 * @copyright Matthieu Napoli http://mnapoli.fr
 * @license   http://www.opensource.org/licenses/mit-license.php MIT (see the LICENSE file)
 */

namespace Mni\FrontYAML\Markdown;

/**
 * Interface of a Markdown parser
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
interface MarkdownParser
{
    /**
     * Parses a Markdown string to HTML.
     *
     * @param string $markdown Markdown document.
     *
     * @return string HTML document.
     */
    public function parse($markdown);
}
<?php
/**
 * FrontYAML
 *
 * @copyright Matthieu Napoli http://mnapoli.fr
 * @license   http://www.opensource.org/licenses/mit-license.php MIT (see the LICENSE file)
 */

namespace Mni\FrontYAML\YAML;

/**
 * Interface of a YAML parser
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
interface YAMLParser
{
    /**
     * Parses a YAML string.
     *
     * @param string $yaml
     *
     * @return mixed
     */
    public function parse($yaml);
}
<?php
/**
 * @license http://www.opensource.org/licenses/mit-license.php MIT (see the LICENSE file)
 */

namespace Psr\Container;

/**
 * No entry was found in the container.
 */
interface NotFoundExceptionInterface extends ContainerExceptionInterface
{
}
<?php
/**
 * @license http://www.opensource.org/licenses/mit-license.php MIT (see the LICENSE file)
 */

namespace Psr\Container;

/**
 * Describes the interface of a container that exposes methods to read its entries.
 */
interface ContainerInterface
{
    /**
     * Finds an entry of the container by its identifier and returns it.
     *
     * @param string $id Identifier of the entry to look for.
     *
     * @throws NotFoundExceptionInterface  No entry was found for **this** identifier.
     * @throws ContainerExceptionInterface Error while retrieving the entry.
     *
     * @return mixed Entry.
     */
    public function get($id);

    /**
     * Returns true if the container can return an entry for the given identifier.
     * Returns false otherwise.
     *
     * `has($id)` returning true does not mean that `get($id)` will not throw an exception.
     * It does however mean that `get($id)` will not throw a `NotFoundExceptionInterface`.
     *
     * @param string $id Identifier of the entry to look for.
     *
     * @return bool
     */
    public function has($id);
}
<?php
/**
 * @license http://www.opensource.org/licenses/mit-license.php MIT (see the LICENSE file)
 */

namespace Psr\Container;

/**
 * Base interface representing a generic exception in a container.
 */
interface ContainerExceptionInterface
{
}
<?php

namespace Psr\Log;

/**
 * Describes a logger-aware instance.
 */
interface LoggerAwareInterface
{
    /**
     * Sets a logger instance on the object.
     *
     * @param LoggerInterface $logger
     *
     * @return void
     */
    public function setLogger(LoggerInterface $logger);
}
<?php

namespace Psr\Log;

/**
 * Describes log levels.
 */
class LogLevel
{
    const EMERGENCY = 'emergency';
    const ALERT     = 'alert';
    const CRITICAL  = 'critical';
    const ERROR     = 'error';
    const WARNING   = 'warning';
    const NOTICE    = 'notice';
    const INFO      = 'info';
    const DEBUG     = 'debug';
}
<?php

namespace Psr\Log\Test;

use Psr\Log\LoggerInterface;
use Psr\Log\LogLevel;

/**
 * Provides a base test class for ensuring compliance with the LoggerInterface.
 *
 * Implementors can extend the class and implement abstract methods to run this
 * as part of their test suite.
 */
abstract class LoggerInterfaceTest extends \PHPUnit_Framework_TestCase
{
    /**
     * @return LoggerInterface
     */
    abstract public function getLogger();

    /**
     * This must return the log messages in order.
     *
     * The simple formatting of the messages is: "<LOG LEVEL> <MESSAGE>".
     *
     * Example ->error('Foo') would yield "error Foo".
     *
     * @return string[]
     */
    abstract public function getLogs();

    public function testImplements()
    {
        $this->assertInstanceOf('Psr\Log\LoggerInterface', $this->getLogger());
    }

    /**
     * @dataProvider provideLevelsAndMessages
     */
    public function testLogsAtAllLevels($level, $message)
    {
        $logger = $this->getLogger();
        $logger->{$level}($message, array('user' => 'Bob'));
        $logger->log($level, $message, array('user' => 'Bob'));

        $expected = array(
            $level.' message of level '.$level.' with context: Bob',
            $level.' message of level '.$level.' with context: Bob',
        );
        $this->assertEquals($expected, $this->getLogs());
    }

    public function provideLevelsAndMessages()
    {
        return array(
            LogLevel::EMERGENCY => array(LogLevel::EMERGENCY, 'message of level emergency with context: {user}'),
            LogLevel::ALERT => array(LogLevel::ALERT, 'message of level alert with context: {user}'),
            LogLevel::CRITICAL => array(LogLevel::CRITICAL, 'message of level critical with context: {user}'),
            LogLevel::ERROR => array(LogLevel::ERROR, 'message of level error with context: {user}'),
            LogLevel::WARNING => array(LogLevel::WARNING, 'message of level warning with context: {user}'),
            LogLevel::NOTICE => array(LogLevel::NOTICE, 'message of level notice with context: {user}'),
            LogLevel::INFO => array(LogLevel::INFO, 'message of level info with context: {user}'),
            LogLevel::DEBUG => array(LogLevel::DEBUG, 'message of level debug with context: {user}'),
        );
    }

    /**
     * @expectedException \Psr\Log\InvalidArgumentException
     */
    public function testThrowsOnInvalidLevel()
    {
        $logger = $this->getLogger();
        $logger->log('invalid level', 'Foo');
    }

    public function testContextReplacement()
    {
        $logger = $this->getLogger();
        $logger->info('{Message {nothing} {user} {foo.bar} a}', array('user' => 'Bob', 'foo.bar' => 'Bar'));

        $expected = array('info {Message {nothing} Bob Bar a}');
        $this->assertEquals($expected, $this->getLogs());
    }

    public function testObjectCastToString()
    {
        if (method_exists($this, 'createPartialMock')) {
            $dummy = $this->createPartialMock('Psr\Log\Test\DummyTest', array('__toString'));
        } else {
            $dummy = $this->getMock('Psr\Log\Test\DummyTest', array('__toString'));
        }
        $dummy->expects($this->once())
            ->method('__toString')
            ->will($this->returnValue('DUMMY'));

        $this->getLogger()->warning($dummy);

        $expected = array('warning DUMMY');
        $this->assertEquals($expected, $this->getLogs());
    }

    public function testContextCanContainAnything()
    {
        $closed = fopen('php://memory', 'r');
        fclose($closed);

        $context = array(
            'bool' => true,
            'null' => null,
            'string' => 'Foo',
            'int' => 0,
            'float' => 0.5,
            'nested' => array('with object' => new DummyTest),
            'object' => new \DateTime,
            'resource' => fopen('php://memory', 'r'),
            'closed' => $closed,
        );

        $this->getLogger()->warning('Crazy context data', $context);

        $expected = array('warning Crazy context data');
        $this->assertEquals($expected, $this->getLogs());
    }

    public function testContextExceptionKeyCanBeExceptionOrOtherValues()
    {
        $logger = $this->getLogger();
        $logger->warning('Random message', array('exception' => 'oops'));
        $logger->critical('Uncaught Exception!', array('exception' => new \LogicException('Fail')));

        $expected = array(
            'warning Random message',
            'critical Uncaught Exception!'
        );
        $this->assertEquals($expected, $this->getLogs());
    }
}

class DummyTest
{
    public function __toString()
    {
    }
}
<?php

namespace Psr\Log\Test;

use Psr\Log\AbstractLogger;

/**
 * Used for testing purposes.
 *
 * It records all records and gives you access to them for verification.
 *
 * @method bool hasEmergency($record)
 * @method bool hasAlert($record)
 * @method bool hasCritical($record)
 * @method bool hasError($record)
 * @method bool hasWarning($record)
 * @method bool hasNotice($record)
 * @method bool hasInfo($record)
 * @method bool hasDebug($record)
 *
 * @method bool hasEmergencyRecords()
 * @method bool hasAlertRecords()
 * @method bool hasCriticalRecords()
 * @method bool hasErrorRecords()
 * @method bool hasWarningRecords()
 * @method bool hasNoticeRecords()
 * @method bool hasInfoRecords()
 * @method bool hasDebugRecords()
 *
 * @method bool hasEmergencyThatContains($message)
 * @method bool hasAlertThatContains($message)
 * @method bool hasCriticalThatContains($message)
 * @method bool hasErrorThatContains($message)
 * @method bool hasWarningThatContains($message)
 * @method bool hasNoticeThatContains($message)
 * @method bool hasInfoThatContains($message)
 * @method bool hasDebugThatContains($message)
 *
 * @method bool hasEmergencyThatMatches($message)
 * @method bool hasAlertThatMatches($message)
 * @method bool hasCriticalThatMatches($message)
 * @method bool hasErrorThatMatches($message)
 * @method bool hasWarningThatMatches($message)
 * @method bool hasNoticeThatMatches($message)
 * @method bool hasInfoThatMatches($message)
 * @method bool hasDebugThatMatches($message)
 *
 * @method bool hasEmergencyThatPasses($message)
 * @method bool hasAlertThatPasses($message)
 * @method bool hasCriticalThatPasses($message)
 * @method bool hasErrorThatPasses($message)
 * @method bool hasWarningThatPasses($message)
 * @method bool hasNoticeThatPasses($message)
 * @method bool hasInfoThatPasses($message)
 * @method bool hasDebugThatPasses($message)
 */
class TestLogger extends AbstractLogger
{
    /**
     * @var array
     */
    public $records = [];

    public $recordsByLevel = [];

    /**
     * @inheritdoc
     */
    public function log($level, $message, array $context = [])
    {
        $record = [
            'level' => $level,
            'message' => $message,
            'context' => $context,
        ];

        $this->recordsByLevel[$record['level']][] = $record;
        $this->records[] = $record;
    }

    public function hasRecords($level)
    {
        return isset($this->recordsByLevel[$level]);
    }

    public function hasRecord($record, $level)
    {
        if (is_string($record)) {
            $record = ['message' => $record];
        }
        return $this->hasRecordThatPasses(function ($rec) use ($record) {
            if ($rec['message'] !== $record['message']) {
                return false;
            }
            if (isset($record['context']) && $rec['context'] !== $record['context']) {
                return false;
            }
            return true;
        }, $level);
    }

    public function hasRecordThatContains($message, $level)
    {
        return $this->hasRecordThatPasses(function ($rec) use ($message) {
            return strpos($rec['message'], $message) !== false;
        }, $level);
    }

    public function hasRecordThatMatches($regex, $level)
    {
        return $this->hasRecordThatPasses(function ($rec) use ($regex) {
            return preg_match($regex, $rec['message']) > 0;
        }, $level);
    }

    public function hasRecordThatPasses(callable $predicate, $level)
    {
        if (!isset($this->recordsByLevel[$level])) {
            return false;
        }
        foreach ($this->recordsByLevel[$level] as $i => $rec) {
            if (call_user_func($predicate, $rec, $i)) {
                return true;
            }
        }
        return false;
    }

    public function __call($method, $args)
    {
        if (preg_match('/(.*)(Debug|Info|Notice|Warning|Error|Critical|Alert|Emergency)(.*)/', $method, $matches) > 0) {
            $genericMethod = $matches[1] . ('Records' !== $matches[3] ? 'Record' : '') . $matches[3];
            $level = strtolower($matches[2]);
            if (method_exists($this, $genericMethod)) {
                $args[] = $level;
                return call_user_func_array([$this, $genericMethod], $args);
            }
        }
        throw new \BadMethodCallException('Call to undefined method ' . get_class($this) . '::' . $method . '()');
    }

    public function reset()
    {
        $this->records = [];
    }
}
<?php

namespace Psr\Log;

/**
 * Basic Implementation of LoggerAwareInterface.
 */
trait LoggerAwareTrait
{
    /**
     * The logger instance.
     *
     * @var LoggerInterface
     */
    protected $logger;

    /**
     * Sets a logger.
     *
     * @param LoggerInterface $logger
     */
    public function setLogger(LoggerInterface $logger)
    {
        $this->logger = $logger;
    }
}
<?php

namespace Psr\Log;

class InvalidArgumentException extends \InvalidArgumentException
{
}
<?php

namespace Psr\Log;

/**
 * This Logger can be used to avoid conditional log calls.
 *
 * Logging should always be optional, and if no logger is provided to your
 * library creating a NullLogger instance to have something to throw logs at
 * is a good way to avoid littering your code with `if ($this->logger) { }`
 * blocks.
 */
class NullLogger extends AbstractLogger
{
    /**
     * Logs with an arbitrary level.
     *
     * @param mixed  $level
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function log($level, $message, array $context = array())
    {
        // noop
    }
}
<?php

namespace Psr\Log;

/**
 * Describes a logger instance.
 *
 * The message MUST be a string or object implementing __toString().
 *
 * The message MAY contain placeholders in the form: {foo} where foo
 * will be replaced by the context data in key "foo".
 *
 * The context array can contain arbitrary data. The only assumption that
 * can be made by implementors is that if an Exception instance is given
 * to produce a stack trace, it MUST be in a key named "exception".
 *
 * See https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-3-logger-interface.md
 * for the full interface specification.
 */
interface LoggerInterface
{
    /**
     * System is unusable.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function emergency($message, array $context = array());

    /**
     * Action must be taken immediately.
     *
     * Example: Entire website down, database unavailable, etc. This should
     * trigger the SMS alerts and wake you up.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function alert($message, array $context = array());

    /**
     * Critical conditions.
     *
     * Example: Application component unavailable, unexpected exception.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function critical($message, array $context = array());

    /**
     * Runtime errors that do not require immediate action but should typically
     * be logged and monitored.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function error($message, array $context = array());

    /**
     * Exceptional occurrences that are not errors.
     *
     * Example: Use of deprecated APIs, poor use of an API, undesirable things
     * that are not necessarily wrong.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function warning($message, array $context = array());

    /**
     * Normal but significant events.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function notice($message, array $context = array());

    /**
     * Interesting events.
     *
     * Example: User logs in, SQL logs.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function info($message, array $context = array());

    /**
     * Detailed debug information.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function debug($message, array $context = array());

    /**
     * Logs with an arbitrary level.
     *
     * @param mixed  $level
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function log($level, $message, array $context = array());
}
<?php

namespace Psr\Log;

/**
 * This is a simple Logger trait that classes unable to extend AbstractLogger
 * (because they extend another class, etc) can include.
 *
 * It simply delegates all log-level-specific methods to the `log` method to
 * reduce boilerplate code that a simple Logger that does the same thing with
 * messages regardless of the error level has to implement.
 */
trait LoggerTrait
{
    /**
     * System is unusable.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function emergency($message, array $context = array())
    {
        $this->log(LogLevel::EMERGENCY, $message, $context);
    }

    /**
     * Action must be taken immediately.
     *
     * Example: Entire website down, database unavailable, etc. This should
     * trigger the SMS alerts and wake you up.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function alert($message, array $context = array())
    {
        $this->log(LogLevel::ALERT, $message, $context);
    }

    /**
     * Critical conditions.
     *
     * Example: Application component unavailable, unexpected exception.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function critical($message, array $context = array())
    {
        $this->log(LogLevel::CRITICAL, $message, $context);
    }

    /**
     * Runtime errors that do not require immediate action but should typically
     * be logged and monitored.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function error($message, array $context = array())
    {
        $this->log(LogLevel::ERROR, $message, $context);
    }

    /**
     * Exceptional occurrences that are not errors.
     *
     * Example: Use of deprecated APIs, poor use of an API, undesirable things
     * that are not necessarily wrong.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function warning($message, array $context = array())
    {
        $this->log(LogLevel::WARNING, $message, $context);
    }

    /**
     * Normal but significant events.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function notice($message, array $context = array())
    {
        $this->log(LogLevel::NOTICE, $message, $context);
    }

    /**
     * Interesting events.
     *
     * Example: User logs in, SQL logs.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function info($message, array $context = array())
    {
        $this->log(LogLevel::INFO, $message, $context);
    }

    /**
     * Detailed debug information.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function debug($message, array $context = array())
    {
        $this->log(LogLevel::DEBUG, $message, $context);
    }

    /**
     * Logs with an arbitrary level.
     *
     * @param mixed  $level
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    abstract public function log($level, $message, array $context = array());
}
<?php

namespace Psr\Log;

/**
 * This is a simple Logger implementation that other Loggers can inherit from.
 *
 * It simply delegates all log-level-specific methods to the `log` method to
 * reduce boilerplate code that a simple Logger that does the same thing with
 * messages regardless of the error level has to implement.
 */
abstract class AbstractLogger implements LoggerInterface
{
    /**
     * System is unusable.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function emergency($message, array $context = array())
    {
        $this->log(LogLevel::EMERGENCY, $message, $context);
    }

    /**
     * Action must be taken immediately.
     *
     * Example: Entire website down, database unavailable, etc. This should
     * trigger the SMS alerts and wake you up.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function alert($message, array $context = array())
    {
        $this->log(LogLevel::ALERT, $message, $context);
    }

    /**
     * Critical conditions.
     *
     * Example: Application component unavailable, unexpected exception.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function critical($message, array $context = array())
    {
        $this->log(LogLevel::CRITICAL, $message, $context);
    }

    /**
     * Runtime errors that do not require immediate action but should typically
     * be logged and monitored.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function error($message, array $context = array())
    {
        $this->log(LogLevel::ERROR, $message, $context);
    }

    /**
     * Exceptional occurrences that are not errors.
     *
     * Example: Use of deprecated APIs, poor use of an API, undesirable things
     * that are not necessarily wrong.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function warning($message, array $context = array())
    {
        $this->log(LogLevel::WARNING, $message, $context);
    }

    /**
     * Normal but significant events.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function notice($message, array $context = array())
    {
        $this->log(LogLevel::NOTICE, $message, $context);
    }

    /**
     * Interesting events.
     *
     * Example: User logs in, SQL logs.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function info($message, array $context = array())
    {
        $this->log(LogLevel::INFO, $message, $context);
    }

    /**
     * Detailed debug information.
     *
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function debug($message, array $context = array())
    {
        $this->log(LogLevel::DEBUG, $message, $context);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

use Symfony\Polyfill\Ctype as p;

if (!function_exists('ctype_alnum')) {
    function ctype_alnum($text) { return p\Ctype::ctype_alnum($text); }
    function ctype_alpha($text) { return p\Ctype::ctype_alpha($text); }
    function ctype_cntrl($text) { return p\Ctype::ctype_cntrl($text); }
    function ctype_digit($text) { return p\Ctype::ctype_digit($text); }
    function ctype_graph($text) { return p\Ctype::ctype_graph($text); }
    function ctype_lower($text) { return p\Ctype::ctype_lower($text); }
    function ctype_print($text) { return p\Ctype::ctype_print($text); }
    function ctype_punct($text) { return p\Ctype::ctype_punct($text); }
    function ctype_space($text) { return p\Ctype::ctype_space($text); }
    function ctype_upper($text) { return p\Ctype::ctype_upper($text); }
    function ctype_xdigit($text) { return p\Ctype::ctype_xdigit($text); }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Polyfill\Ctype;

/**
 * Ctype implementation through regex.
 *
 * @internal
 *
 * @author Gert de Pagter <BackEndTea@gmail.com>
 */
final class Ctype
{
    /**
     * Returns TRUE if every character in text is either a letter or a digit, FALSE otherwise.
     *
     * @see https://php.net/ctype-alnum
     *
     * @param string|int $text
     *
     * @return bool
     */
    public static function ctype_alnum($text)
    {
        $text = self::convert_int_to_char_for_ctype($text);

        return \is_string($text) && '' !== $text && !preg_match('/[^A-Za-z0-9]/', $text);
    }

    /**
     * Returns TRUE if every character in text is a letter, FALSE otherwise.
     *
     * @see https://php.net/ctype-alpha
     *
     * @param string|int $text
     *
     * @return bool
     */
    public static function ctype_alpha($text)
    {
        $text = self::convert_int_to_char_for_ctype($text);

        return \is_string($text) && '' !== $text && !preg_match('/[^A-Za-z]/', $text);
    }

    /**
     * Returns TRUE if every character in text is a control character from the current locale, FALSE otherwise.
     *
     * @see https://php.net/ctype-cntrl
     *
     * @param string|int $text
     *
     * @return bool
     */
    public static function ctype_cntrl($text)
    {
        $text = self::convert_int_to_char_for_ctype($text);

        return \is_string($text) && '' !== $text && !preg_match('/[^\x00-\x1f\x7f]/', $text);
    }

    /**
     * Returns TRUE if every character in the string text is a decimal digit, FALSE otherwise.
     *
     * @see https://php.net/ctype-digit
     *
     * @param string|int $text
     *
     * @return bool
     */
    public static function ctype_digit($text)
    {
        $text = self::convert_int_to_char_for_ctype($text);

        return \is_string($text) && '' !== $text && !preg_match('/[^0-9]/', $text);
    }

    /**
     * Returns TRUE if every character in text is printable and actually creates visible output (no white space), FALSE otherwise.
     *
     * @see https://php.net/ctype-graph
     *
     * @param string|int $text
     *
     * @return bool
     */
    public static function ctype_graph($text)
    {
        $text = self::convert_int_to_char_for_ctype($text);

        return \is_string($text) && '' !== $text && !preg_match('/[^!-~]/', $text);
    }

    /**
     * Returns TRUE if every character in text is a lowercase letter.
     *
     * @see https://php.net/ctype-lower
     *
     * @param string|int $text
     *
     * @return bool
     */
    public static function ctype_lower($text)
    {
        $text = self::convert_int_to_char_for_ctype($text);

        return \is_string($text) && '' !== $text && !preg_match('/[^a-z]/', $text);
    }

    /**
     * Returns TRUE if every character in text will actually create output (including blanks). Returns FALSE if text contains control characters or characters that do not have any output or control function at all.
     *
     * @see https://php.net/ctype-print
     *
     * @param string|int $text
     *
     * @return bool
     */
    public static function ctype_print($text)
    {
        $text = self::convert_int_to_char_for_ctype($text);

        return \is_string($text) && '' !== $text && !preg_match('/[^ -~]/', $text);
    }

    /**
     * Returns TRUE if every character in text is printable, but neither letter, digit or blank, FALSE otherwise.
     *
     * @see https://php.net/ctype-punct
     *
     * @param string|int $text
     *
     * @return bool
     */
    public static function ctype_punct($text)
    {
        $text = self::convert_int_to_char_for_ctype($text);

        return \is_string($text) && '' !== $text && !preg_match('/[^!-\/\:-@\[-`\{-~]/', $text);
    }

    /**
     * Returns TRUE if every character in text creates some sort of white space, FALSE otherwise. Besides the blank character this also includes tab, vertical tab, line feed, carriage return and form feed characters.
     *
     * @see https://php.net/ctype-space
     *
     * @param string|int $text
     *
     * @return bool
     */
    public static function ctype_space($text)
    {
        $text = self::convert_int_to_char_for_ctype($text);

        return \is_string($text) && '' !== $text && !preg_match('/[^\s]/', $text);
    }

    /**
     * Returns TRUE if every character in text is an uppercase letter.
     *
     * @see https://php.net/ctype-upper
     *
     * @param string|int $text
     *
     * @return bool
     */
    public static function ctype_upper($text)
    {
        $text = self::convert_int_to_char_for_ctype($text);

        return \is_string($text) && '' !== $text && !preg_match('/[^A-Z]/', $text);
    }

    /**
     * Returns TRUE if every character in text is a hexadecimal 'digit', that is a decimal digit or a character from [A-Fa-f] , FALSE otherwise.
     *
     * @see https://php.net/ctype-xdigit
     *
     * @param string|int $text
     *
     * @return bool
     */
    public static function ctype_xdigit($text)
    {
        $text = self::convert_int_to_char_for_ctype($text);

        return \is_string($text) && '' !== $text && !preg_match('/[^A-Fa-f0-9]/', $text);
    }

    /**
     * Converts integers to their char versions according to normal ctype behaviour, if needed.
     *
     * If an integer between -128 and 255 inclusive is provided,
     * it is interpreted as the ASCII value of a single character
     * (negative values have 256 added in order to allow characters in the Extended ASCII range).
     * Any other integer is interpreted as a string containing the decimal digits of the integer.
     *
     * @param string|int $int
     *
     * @return mixed
     */
    private static function convert_int_to_char_for_ctype($int)
    {
        if (!\is_int($int)) {
            return $int;
        }

        if ($int < -128 || $int > 255) {
            return (string) $int;
        }

        if ($int < 0) {
            $int += 256;
        }

        return \chr($int);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Filesystem;

use Symfony\Component\Filesystem\Exception\FileNotFoundException;
use Symfony\Component\Filesystem\Exception\IOException;

/**
 * Provides basic utility to manipulate the file system.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class Filesystem
{
    private static $lastError;

    /**
     * Copies a file.
     *
     * If the target file is older than the origin file, it's always overwritten.
     * If the target file is newer, it is overwritten only when the
     * $overwriteNewerFiles option is set to true.
     *
     * @param string $originFile          The original filename
     * @param string $targetFile          The target filename
     * @param bool   $overwriteNewerFiles If true, target files newer than origin files are overwritten
     *
     * @throws FileNotFoundException When originFile doesn't exist
     * @throws IOException           When copy fails
     */
    public function copy($originFile, $targetFile, $overwriteNewerFiles = false)
    {
        $originIsLocal = stream_is_local($originFile) || 0 === stripos($originFile, 'file://');
        if ($originIsLocal && !is_file($originFile)) {
            throw new FileNotFoundException(sprintf('Failed to copy "%s" because file does not exist.', $originFile), 0, null, $originFile);
        }

        $this->mkdir(\dirname($targetFile));

        $doCopy = true;
        if (!$overwriteNewerFiles && null === parse_url($originFile, PHP_URL_HOST) && is_file($targetFile)) {
            $doCopy = filemtime($originFile) > filemtime($targetFile);
        }

        if ($doCopy) {
            // https://bugs.php.net/64634
            if (false === $source = @fopen($originFile, 'r')) {
                throw new IOException(sprintf('Failed to copy "%s" to "%s" because source file could not be opened for reading.', $originFile, $targetFile), 0, null, $originFile);
            }

            // Stream context created to allow files overwrite when using FTP stream wrapper - disabled by default
            if (false === $target = @fopen($targetFile, 'w', null, stream_context_create(['ftp' => ['overwrite' => true]]))) {
                throw new IOException(sprintf('Failed to copy "%s" to "%s" because target file could not be opened for writing.', $originFile, $targetFile), 0, null, $originFile);
            }

            $bytesCopied = stream_copy_to_stream($source, $target);
            fclose($source);
            fclose($target);
            unset($source, $target);

            if (!is_file($targetFile)) {
                throw new IOException(sprintf('Failed to copy "%s" to "%s".', $originFile, $targetFile), 0, null, $originFile);
            }

            if ($originIsLocal) {
                // Like `cp`, preserve executable permission bits
                @chmod($targetFile, fileperms($targetFile) | (fileperms($originFile) & 0111));

                if ($bytesCopied !== $bytesOrigin = filesize($originFile)) {
                    throw new IOException(sprintf('Failed to copy the whole content of "%s" to "%s" (%g of %g bytes copied).', $originFile, $targetFile, $bytesCopied, $bytesOrigin), 0, null, $originFile);
                }
            }
        }
    }

    /**
     * Creates a directory recursively.
     *
     * @param string|iterable $dirs The directory path
     * @param int             $mode The directory mode
     *
     * @throws IOException On any directory creation failure
     */
    public function mkdir($dirs, $mode = 0777)
    {
        foreach ($this->toIterable($dirs) as $dir) {
            if (is_dir($dir)) {
                continue;
            }

            if (!self::box('mkdir', $dir, $mode, true)) {
                if (!is_dir($dir)) {
                    // The directory was not created by a concurrent process. Let's throw an exception with a developer friendly error message if we have one
                    if (self::$lastError) {
                        throw new IOException(sprintf('Failed to create "%s": %s.', $dir, self::$lastError), 0, null, $dir);
                    }
                    throw new IOException(sprintf('Failed to create "%s"', $dir), 0, null, $dir);
                }
            }
        }
    }

    /**
     * Checks the existence of files or directories.
     *
     * @param string|iterable $files A filename, an array of files, or a \Traversable instance to check
     *
     * @return bool true if the file exists, false otherwise
     */
    public function exists($files)
    {
        $maxPathLength = PHP_MAXPATHLEN - 2;

        foreach ($this->toIterable($files) as $file) {
            if (\strlen($file) > $maxPathLength) {
                throw new IOException(sprintf('Could not check if file exist because path length exceeds %d characters.', $maxPathLength), 0, null, $file);
            }

            if (!file_exists($file)) {
                return false;
            }
        }

        return true;
    }

    /**
     * Sets access and modification time of file.
     *
     * @param string|iterable $files A filename, an array of files, or a \Traversable instance to create
     * @param int|null        $time  The touch time as a Unix timestamp, if not supplied the current system time is used
     * @param int|null        $atime The access time as a Unix timestamp, if not supplied the current system time is used
     *
     * @throws IOException When touch fails
     */
    public function touch($files, $time = null, $atime = null)
    {
        foreach ($this->toIterable($files) as $file) {
            $touch = $time ? @touch($file, $time, $atime) : @touch($file);
            if (true !== $touch) {
                throw new IOException(sprintf('Failed to touch "%s".', $file), 0, null, $file);
            }
        }
    }

    /**
     * Removes files or directories.
     *
     * @param string|iterable $files A filename, an array of files, or a \Traversable instance to remove
     *
     * @throws IOException When removal fails
     */
    public function remove($files)
    {
        if ($files instanceof \Traversable) {
            $files = iterator_to_array($files, false);
        } elseif (!\is_array($files)) {
            $files = [$files];
        }
        $files = array_reverse($files);
        foreach ($files as $file) {
            if (is_link($file)) {
                // See https://bugs.php.net/52176
                if (!(self::box('unlink', $file) || '\\' !== \DIRECTORY_SEPARATOR || self::box('rmdir', $file)) && file_exists($file)) {
                    throw new IOException(sprintf('Failed to remove symlink "%s": %s.', $file, self::$lastError));
                }
            } elseif (is_dir($file)) {
                $this->remove(new \FilesystemIterator($file, \FilesystemIterator::CURRENT_AS_PATHNAME | \FilesystemIterator::SKIP_DOTS));

                if (!self::box('rmdir', $file) && file_exists($file)) {
                    throw new IOException(sprintf('Failed to remove directory "%s": %s.', $file, self::$lastError));
                }
            } elseif (!self::box('unlink', $file) && file_exists($file)) {
                throw new IOException(sprintf('Failed to remove file "%s": %s.', $file, self::$lastError));
            }
        }
    }

    /**
     * Change mode for an array of files or directories.
     *
     * @param string|iterable $files     A filename, an array of files, or a \Traversable instance to change mode
     * @param int             $mode      The new mode (octal)
     * @param int             $umask     The mode mask (octal)
     * @param bool            $recursive Whether change the mod recursively or not
     *
     * @throws IOException When the change fails
     */
    public function chmod($files, $mode, $umask = 0000, $recursive = false)
    {
        foreach ($this->toIterable($files) as $file) {
            if (true !== @chmod($file, $mode & ~$umask)) {
                throw new IOException(sprintf('Failed to chmod file "%s".', $file), 0, null, $file);
            }
            if ($recursive && is_dir($file) && !is_link($file)) {
                $this->chmod(new \FilesystemIterator($file), $mode, $umask, true);
            }
        }
    }

    /**
     * Change the owner of an array of files or directories.
     *
     * @param string|iterable $files     A filename, an array of files, or a \Traversable instance to change owner
     * @param string          $user      The new owner user name
     * @param bool            $recursive Whether change the owner recursively or not
     *
     * @throws IOException When the change fails
     */
    public function chown($files, $user, $recursive = false)
    {
        foreach ($this->toIterable($files) as $file) {
            if ($recursive && is_dir($file) && !is_link($file)) {
                $this->chown(new \FilesystemIterator($file), $user, true);
            }
            if (is_link($file) && \function_exists('lchown')) {
                if (true !== @lchown($file, $user)) {
                    throw new IOException(sprintf('Failed to chown file "%s".', $file), 0, null, $file);
                }
            } else {
                if (true !== @chown($file, $user)) {
                    throw new IOException(sprintf('Failed to chown file "%s".', $file), 0, null, $file);
                }
            }
        }
    }

    /**
     * Change the group of an array of files or directories.
     *
     * @param string|iterable $files     A filename, an array of files, or a \Traversable instance to change group
     * @param string          $group     The group name
     * @param bool            $recursive Whether change the group recursively or not
     *
     * @throws IOException When the change fails
     */
    public function chgrp($files, $group, $recursive = false)
    {
        foreach ($this->toIterable($files) as $file) {
            if ($recursive && is_dir($file) && !is_link($file)) {
                $this->chgrp(new \FilesystemIterator($file), $group, true);
            }
            if (is_link($file) && \function_exists('lchgrp')) {
                if (true !== @lchgrp($file, $group) || (\defined('HHVM_VERSION') && !posix_getgrnam($group))) {
                    throw new IOException(sprintf('Failed to chgrp file "%s".', $file), 0, null, $file);
                }
            } else {
                if (true !== @chgrp($file, $group)) {
                    throw new IOException(sprintf('Failed to chgrp file "%s".', $file), 0, null, $file);
                }
            }
        }
    }

    /**
     * Renames a file or a directory.
     *
     * @param string $origin    The origin filename or directory
     * @param string $target    The new filename or directory
     * @param bool   $overwrite Whether to overwrite the target if it already exists
     *
     * @throws IOException When target file or directory already exists
     * @throws IOException When origin cannot be renamed
     */
    public function rename($origin, $target, $overwrite = false)
    {
        // we check that target does not exist
        if (!$overwrite && $this->isReadable($target)) {
            throw new IOException(sprintf('Cannot rename because the target "%s" already exists.', $target), 0, null, $target);
        }

        if (true !== @rename($origin, $target)) {
            if (is_dir($origin)) {
                // See https://bugs.php.net/54097 & https://php.net/rename#113943
                $this->mirror($origin, $target, null, ['override' => $overwrite, 'delete' => $overwrite]);
                $this->remove($origin);

                return;
            }
            throw new IOException(sprintf('Cannot rename "%s" to "%s".', $origin, $target), 0, null, $target);
        }
    }

    /**
     * Tells whether a file exists and is readable.
     *
     * @param string $filename Path to the file
     *
     * @return bool
     *
     * @throws IOException When windows path is longer than 258 characters
     */
    private function isReadable($filename)
    {
        $maxPathLength = PHP_MAXPATHLEN - 2;

        if (\strlen($filename) > $maxPathLength) {
            throw new IOException(sprintf('Could not check if file is readable because path length exceeds %d characters.', $maxPathLength), 0, null, $filename);
        }

        return is_readable($filename);
    }

    /**
     * Creates a symbolic link or copy a directory.
     *
     * @param string $originDir     The origin directory path
     * @param string $targetDir     The symbolic link name
     * @param bool   $copyOnWindows Whether to copy files if on Windows
     *
     * @throws IOException When symlink fails
     */
    public function symlink($originDir, $targetDir, $copyOnWindows = false)
    {
        if ('\\' === \DIRECTORY_SEPARATOR) {
            $originDir = strtr($originDir, '/', '\\');
            $targetDir = strtr($targetDir, '/', '\\');

            if ($copyOnWindows) {
                $this->mirror($originDir, $targetDir);

                return;
            }
        }

        $this->mkdir(\dirname($targetDir));

        if (is_link($targetDir)) {
            if (readlink($targetDir) === $originDir) {
                return;
            }
            $this->remove($targetDir);
        }

        if (!self::box('symlink', $originDir, $targetDir)) {
            $this->linkException($originDir, $targetDir, 'symbolic');
        }
    }

    /**
     * Creates a hard link, or several hard links to a file.
     *
     * @param string          $originFile  The original file
     * @param string|string[] $targetFiles The target file(s)
     *
     * @throws FileNotFoundException When original file is missing or not a file
     * @throws IOException           When link fails, including if link already exists
     */
    public function hardlink($originFile, $targetFiles)
    {
        if (!$this->exists($originFile)) {
            throw new FileNotFoundException(null, 0, null, $originFile);
        }

        if (!is_file($originFile)) {
            throw new FileNotFoundException(sprintf('Origin file "%s" is not a file', $originFile));
        }

        foreach ($this->toIterable($targetFiles) as $targetFile) {
            if (is_file($targetFile)) {
                if (fileinode($originFile) === fileinode($targetFile)) {
                    continue;
                }
                $this->remove($targetFile);
            }

            if (!self::box('link', $originFile, $targetFile)) {
                $this->linkException($originFile, $targetFile, 'hard');
            }
        }
    }

    /**
     * @param string $origin
     * @param string $target
     * @param string $linkType Name of the link type, typically 'symbolic' or 'hard'
     */
    private function linkException($origin, $target, $linkType)
    {
        if (self::$lastError) {
            if ('\\' === \DIRECTORY_SEPARATOR && false !== strpos(self::$lastError, 'error code(1314)')) {
                throw new IOException(sprintf('Unable to create %s link due to error code 1314: \'A required privilege is not held by the client\'. Do you have the required Administrator-rights?', $linkType), 0, null, $target);
            }
        }
        throw new IOException(sprintf('Failed to create %s link from "%s" to "%s".', $linkType, $origin, $target), 0, null, $target);
    }

    /**
     * Resolves links in paths.
     *
     * With $canonicalize = false (default)
     *      - if $path does not exist or is not a link, returns null
     *      - if $path is a link, returns the next direct target of the link without considering the existence of the target
     *
     * With $canonicalize = true
     *      - if $path does not exist, returns null
     *      - if $path exists, returns its absolute fully resolved final version
     *
     * @param string $path         A filesystem path
     * @param bool   $canonicalize Whether or not to return a canonicalized path
     *
     * @return string|null
     */
    public function readlink($path, $canonicalize = false)
    {
        if (!$canonicalize && !is_link($path)) {
            return null;
        }

        if ($canonicalize) {
            if (!$this->exists($path)) {
                return null;
            }

            if ('\\' === \DIRECTORY_SEPARATOR) {
                $path = readlink($path);
            }

            return realpath($path);
        }

        if ('\\' === \DIRECTORY_SEPARATOR) {
            return realpath($path);
        }

        return readlink($path);
    }

    /**
     * Given an existing path, convert it to a path relative to a given starting path.
     *
     * @param string $endPath   Absolute path of target
     * @param string $startPath Absolute path where traversal begins
     *
     * @return string Path of target relative to starting path
     */
    public function makePathRelative($endPath, $startPath)
    {
        if (!$this->isAbsolutePath($endPath) || !$this->isAbsolutePath($startPath)) {
            @trigger_error(sprintf('Support for passing relative paths to %s() is deprecated since Symfony 3.4 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
        }

        // Normalize separators on Windows
        if ('\\' === \DIRECTORY_SEPARATOR) {
            $endPath = str_replace('\\', '/', $endPath);
            $startPath = str_replace('\\', '/', $startPath);
        }

        $stripDriveLetter = function ($path) {
            if (\strlen($path) > 2 && ':' === $path[1] && '/' === $path[2] && ctype_alpha($path[0])) {
                return substr($path, 2);
            }

            return $path;
        };

        $endPath = $stripDriveLetter($endPath);
        $startPath = $stripDriveLetter($startPath);

        // Split the paths into arrays
        $startPathArr = explode('/', trim($startPath, '/'));
        $endPathArr = explode('/', trim($endPath, '/'));

        $normalizePathArray = function ($pathSegments, $absolute) {
            $result = [];

            foreach ($pathSegments as $segment) {
                if ('..' === $segment && ($absolute || \count($result))) {
                    array_pop($result);
                } elseif ('.' !== $segment) {
                    $result[] = $segment;
                }
            }

            return $result;
        };

        $startPathArr = $normalizePathArray($startPathArr, static::isAbsolutePath($startPath));
        $endPathArr = $normalizePathArray($endPathArr, static::isAbsolutePath($endPath));

        // Find for which directory the common path stops
        $index = 0;
        while (isset($startPathArr[$index]) && isset($endPathArr[$index]) && $startPathArr[$index] === $endPathArr[$index]) {
            ++$index;
        }

        // Determine how deep the start path is relative to the common path (ie, "web/bundles" = 2 levels)
        if (1 === \count($startPathArr) && '' === $startPathArr[0]) {
            $depth = 0;
        } else {
            $depth = \count($startPathArr) - $index;
        }

        // Repeated "../" for each level need to reach the common path
        $traverser = str_repeat('../', $depth);

        $endPathRemainder = implode('/', \array_slice($endPathArr, $index));

        // Construct $endPath from traversing to the common path, then to the remaining $endPath
        $relativePath = $traverser.('' !== $endPathRemainder ? $endPathRemainder.'/' : '');

        return '' === $relativePath ? './' : $relativePath;
    }

    /**
     * Mirrors a directory to another.
     *
     * Copies files and directories from the origin directory into the target directory. By default:
     *
     *  - existing files in the target directory will be overwritten, except if they are newer (see the `override` option)
     *  - files in the target directory that do not exist in the source directory will not be deleted (see the `delete` option)
     *
     * @param string            $originDir The origin directory
     * @param string            $targetDir The target directory
     * @param \Traversable|null $iterator  Iterator that filters which files and directories to copy, if null a recursive iterator is created
     * @param array             $options   An array of boolean options
     *                                     Valid options are:
     *                                     - $options['override'] If true, target files newer than origin files are overwritten (see copy(), defaults to false)
     *                                     - $options['copy_on_windows'] Whether to copy files instead of links on Windows (see symlink(), defaults to false)
     *                                     - $options['delete'] Whether to delete files that are not in the source directory (defaults to false)
     *
     * @throws IOException When file type is unknown
     */
    public function mirror($originDir, $targetDir, \Traversable $iterator = null, $options = [])
    {
        $targetDir = rtrim($targetDir, '/\\');
        $originDir = rtrim($originDir, '/\\');
        $originDirLen = \strlen($originDir);

        // Iterate in destination folder to remove obsolete entries
        if ($this->exists($targetDir) && isset($options['delete']) && $options['delete']) {
            $deleteIterator = $iterator;
            if (null === $deleteIterator) {
                $flags = \FilesystemIterator::SKIP_DOTS;
                $deleteIterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($targetDir, $flags), \RecursiveIteratorIterator::CHILD_FIRST);
            }
            $targetDirLen = \strlen($targetDir);
            foreach ($deleteIterator as $file) {
                $origin = $originDir.substr($file->getPathname(), $targetDirLen);
                if (!$this->exists($origin)) {
                    $this->remove($file);
                }
            }
        }

        $copyOnWindows = false;
        if (isset($options['copy_on_windows'])) {
            $copyOnWindows = $options['copy_on_windows'];
        }

        if (null === $iterator) {
            $flags = $copyOnWindows ? \FilesystemIterator::SKIP_DOTS | \FilesystemIterator::FOLLOW_SYMLINKS : \FilesystemIterator::SKIP_DOTS;
            $iterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($originDir, $flags), \RecursiveIteratorIterator::SELF_FIRST);
        }

        if ($this->exists($originDir)) {
            $this->mkdir($targetDir);
        }

        foreach ($iterator as $file) {
            $target = $targetDir.substr($file->getPathname(), $originDirLen);

            if ($copyOnWindows) {
                if (is_file($file)) {
                    $this->copy($file, $target, isset($options['override']) ? $options['override'] : false);
                } elseif (is_dir($file)) {
                    $this->mkdir($target);
                } else {
                    throw new IOException(sprintf('Unable to guess "%s" file type.', $file), 0, null, $file);
                }
            } else {
                if (is_link($file)) {
                    $this->symlink($file->getLinkTarget(), $target);
                } elseif (is_dir($file)) {
                    $this->mkdir($target);
                } elseif (is_file($file)) {
                    $this->copy($file, $target, isset($options['override']) ? $options['override'] : false);
                } else {
                    throw new IOException(sprintf('Unable to guess "%s" file type.', $file), 0, null, $file);
                }
            }
        }
    }

    /**
     * Returns whether the file path is an absolute path.
     *
     * @param string $file A file path
     *
     * @return bool
     */
    public function isAbsolutePath($file)
    {
        return strspn($file, '/\\', 0, 1)
            || (\strlen($file) > 3 && ctype_alpha($file[0])
                && ':' === $file[1]
                && strspn($file, '/\\', 2, 1)
            )
            || null !== parse_url($file, PHP_URL_SCHEME)
        ;
    }

    /**
     * Creates a temporary file with support for custom stream wrappers.
     *
     * @param string $dir    The directory where the temporary filename will be created
     * @param string $prefix The prefix of the generated temporary filename
     *                       Note: Windows uses only the first three characters of prefix
     *
     * @return string The new temporary filename (with path), or throw an exception on failure
     */
    public function tempnam($dir, $prefix)
    {
        list($scheme, $hierarchy) = $this->getSchemeAndHierarchy($dir);

        // If no scheme or scheme is "file" or "gs" (Google Cloud) create temp file in local filesystem
        if (null === $scheme || 'file' === $scheme || 'gs' === $scheme) {
            $tmpFile = @tempnam($hierarchy, $prefix);

            // If tempnam failed or no scheme return the filename otherwise prepend the scheme
            if (false !== $tmpFile) {
                if (null !== $scheme && 'gs' !== $scheme) {
                    return $scheme.'://'.$tmpFile;
                }

                return $tmpFile;
            }

            throw new IOException('A temporary file could not be created.');
        }

        // Loop until we create a valid temp file or have reached 10 attempts
        for ($i = 0; $i < 10; ++$i) {
            // Create a unique filename
            $tmpFile = $dir.'/'.$prefix.uniqid(mt_rand(), true);

            // Use fopen instead of file_exists as some streams do not support stat
            // Use mode 'x+' to atomically check existence and create to avoid a TOCTOU vulnerability
            $handle = @fopen($tmpFile, 'x+');

            // If unsuccessful restart the loop
            if (false === $handle) {
                continue;
            }

            // Close the file if it was successfully opened
            @fclose($handle);

            return $tmpFile;
        }

        throw new IOException('A temporary file could not be created.');
    }

    /**
     * Atomically dumps content into a file.
     *
     * @param string $filename The file to be written to
     * @param string $content  The data to write into the file
     *
     * @throws IOException if the file cannot be written to
     */
    public function dumpFile($filename, $content)
    {
        $dir = \dirname($filename);

        if (!is_dir($dir)) {
            $this->mkdir($dir);
        }

        if (!is_writable($dir)) {
            throw new IOException(sprintf('Unable to write to the "%s" directory.', $dir), 0, null, $dir);
        }

        // Will create a temp file with 0600 access rights
        // when the filesystem supports chmod.
        $tmpFile = $this->tempnam($dir, basename($filename));

        if (false === @file_put_contents($tmpFile, $content)) {
            throw new IOException(sprintf('Failed to write file "%s".', $filename), 0, null, $filename);
        }

        @chmod($tmpFile, file_exists($filename) ? fileperms($filename) : 0666 & ~umask());

        $this->rename($tmpFile, $filename, true);
    }

    /**
     * Appends content to an existing file.
     *
     * @param string $filename The file to which to append content
     * @param string $content  The content to append
     *
     * @throws IOException If the file is not writable
     */
    public function appendToFile($filename, $content)
    {
        $dir = \dirname($filename);

        if (!is_dir($dir)) {
            $this->mkdir($dir);
        }

        if (!is_writable($dir)) {
            throw new IOException(sprintf('Unable to write to the "%s" directory.', $dir), 0, null, $dir);
        }

        if (false === @file_put_contents($filename, $content, FILE_APPEND)) {
            throw new IOException(sprintf('Failed to write file "%s".', $filename), 0, null, $filename);
        }
    }

    /**
     * @param mixed $files
     *
     * @return array|\Traversable
     */
    private function toIterable($files)
    {
        return \is_array($files) || $files instanceof \Traversable ? $files : [$files];
    }

    /**
     * Gets a 2-tuple of scheme (may be null) and hierarchical part of a filename (e.g. file:///tmp -> [file, tmp]).
     *
     * @param string $filename The filename to be parsed
     *
     * @return array The filename scheme and hierarchical part
     */
    private function getSchemeAndHierarchy($filename)
    {
        $components = explode('://', $filename, 2);

        return 2 === \count($components) ? [$components[0], $components[1]] : [null, $components[0]];
    }

    /**
     * @param callable $func
     *
     * @return mixed
     */
    private static function box($func)
    {
        self::$lastError = null;
        set_error_handler(__CLASS__.'::handleError');
        try {
            $result = \call_user_func_array($func, \array_slice(\func_get_args(), 1));
            restore_error_handler();

            return $result;
        } catch (\Throwable $e) {
        } catch (\Exception $e) {
        }
        restore_error_handler();

        throw $e;
    }

    /**
     * @internal
     */
    public static function handleError($type, $msg)
    {
        self::$lastError = $msg;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Filesystem;

use Symfony\Component\Filesystem\Exception\IOException;
use Symfony\Component\Lock\Store\FlockStore;
use Symfony\Component\Lock\Store\SemaphoreStore;

@trigger_error(sprintf('The %s class is deprecated since Symfony 3.4 and will be removed in 4.0. Use %s or %s instead.', LockHandler::class, SemaphoreStore::class, FlockStore::class), E_USER_DEPRECATED);

/**
 * LockHandler class provides a simple abstraction to lock anything by means of
 * a file lock.
 *
 * A locked file is created based on the lock name when calling lock(). Other
 * lock handlers will not be able to lock the same name until it is released
 * (explicitly by calling release() or implicitly when the instance holding the
 * lock is destroyed).
 *
 * @author GrÃ©goire Pineau <lyrixx@lyrixx.info>
 * @author Romain Neutron <imprec@gmail.com>
 * @author Nicolas Grekas <p@tchwork.com>
 *
 * @deprecated since version 3.4, to be removed in 4.0. Use Symfony\Component\Lock\Store\SemaphoreStore or Symfony\Component\Lock\Store\FlockStore instead.
 */
class LockHandler
{
    private $file;
    private $handle;

    /**
     * @param string      $name     The lock name
     * @param string|null $lockPath The directory to store the lock. Default values will use temporary directory
     *
     * @throws IOException If the lock directory could not be created or is not writable
     */
    public function __construct($name, $lockPath = null)
    {
        $lockPath = $lockPath ?: sys_get_temp_dir();

        if (!is_dir($lockPath)) {
            $fs = new Filesystem();
            $fs->mkdir($lockPath);
        }

        if (!is_writable($lockPath)) {
            throw new IOException(sprintf('The directory "%s" is not writable.', $lockPath), 0, null, $lockPath);
        }

        $this->file = sprintf('%s/sf.%s.%s.lock', $lockPath, preg_replace('/[^a-z0-9\._-]+/i', '-', $name), hash('sha256', $name));
    }

    /**
     * Lock the resource.
     *
     * @param bool $blocking Wait until the lock is released
     *
     * @return bool Returns true if the lock was acquired, false otherwise
     *
     * @throws IOException If the lock file could not be created or opened
     */
    public function lock($blocking = false)
    {
        if ($this->handle) {
            return true;
        }

        $error = null;

        // Silence error reporting
        set_error_handler(function ($errno, $msg) use (&$error) {
            $error = $msg;
        });

        if (!$this->handle = fopen($this->file, 'r+') ?: fopen($this->file, 'r')) {
            if ($this->handle = fopen($this->file, 'x')) {
                chmod($this->file, 0666);
            } elseif (!$this->handle = fopen($this->file, 'r+') ?: fopen($this->file, 'r')) {
                usleep(100); // Give some time for chmod() to complete
                $this->handle = fopen($this->file, 'r+') ?: fopen($this->file, 'r');
            }
        }
        restore_error_handler();

        if (!$this->handle) {
            throw new IOException($error, 0, null, $this->file);
        }

        // On Windows, even if PHP doc says the contrary, LOCK_NB works, see
        // https://bugs.php.net/54129
        if (!flock($this->handle, LOCK_EX | ($blocking ? 0 : LOCK_NB))) {
            fclose($this->handle);
            $this->handle = null;

            return false;
        }

        return true;
    }

    /**
     * Release the resource.
     */
    public function release()
    {
        if ($this->handle) {
            flock($this->handle, LOCK_UN | LOCK_NB);
            fclose($this->handle);
            $this->handle = null;
        }
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Filesystem\Exception;

/**
 * IOException interface for file and input/output stream related exceptions thrown by the component.
 *
 * @author Christian GÃ¤rtner <christiangaertner.film@googlemail.com>
 */
interface IOExceptionInterface extends ExceptionInterface
{
    /**
     * Returns the associated path for the exception.
     *
     * @return string|null The path
     */
    public function getPath();
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Filesystem\Exception;

/**
 * Exception interface for all exceptions thrown by the component.
 *
 * @author Romain Neutron <imprec@gmail.com>
 */
interface ExceptionInterface
{
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Filesystem\Exception;

/**
 * Exception class thrown when a filesystem operation failure happens.
 *
 * @author Romain Neutron <imprec@gmail.com>
 * @author Christian GÃ¤rtner <christiangaertner.film@googlemail.com>
 * @author Fabien Potencier <fabien@symfony.com>
 */
class IOException extends \RuntimeException implements IOExceptionInterface
{
    private $path;

    public function __construct($message, $code = 0, \Exception $previous = null, $path = null)
    {
        $this->path = $path;

        parent::__construct($message, $code, $previous);
    }

    /**
     * {@inheritdoc}
     */
    public function getPath()
    {
        return $this->path;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Filesystem\Exception;

/**
 * Exception class thrown when a file couldn't be found.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Christian GÃ¤rtner <christiangaertner.film@googlemail.com>
 */
class FileNotFoundException extends IOException
{
    public function __construct($message = null, $code = 0, \Exception $previous = null, $path = null)
    {
        if (null === $message) {
            if (null === $path) {
                $message = 'File could not be found.';
            } else {
                $message = sprintf('File "%s" could not be found.', $path);
            }
        }

        parent::__construct($message, $code, $previous, $path);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Finder;

/**
 * Extends \SplFileInfo to support relative paths.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class SplFileInfo extends \SplFileInfo
{
    private $relativePath;
    private $relativePathname;

    /**
     * @param string $file             The file name
     * @param string $relativePath     The relative path
     * @param string $relativePathname The relative path name
     */
    public function __construct($file, $relativePath, $relativePathname)
    {
        parent::__construct($file);
        $this->relativePath = $relativePath;
        $this->relativePathname = $relativePathname;
    }

    /**
     * Returns the relative path.
     *
     * This path does not contain the file name.
     *
     * @return string the relative path
     */
    public function getRelativePath()
    {
        return $this->relativePath;
    }

    /**
     * Returns the relative path name.
     *
     * This path contains the file name.
     *
     * @return string the relative path name
     */
    public function getRelativePathname()
    {
        return $this->relativePathname;
    }

    /**
     * Returns the contents of the file.
     *
     * @return string the contents of the file
     *
     * @throws \RuntimeException
     */
    public function getContents()
    {
        set_error_handler(function ($type, $msg) use (&$error) { $error = $msg; });
        $content = file_get_contents($this->getPathname());
        restore_error_handler();
        if (false === $content) {
            throw new \RuntimeException($error);
        }

        return $content;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Finder\Comparator;

/**
 * NumberComparator compiles a simple comparison to an anonymous
 * subroutine, which you can call with a value to be tested again.
 *
 * Now this would be very pointless, if NumberCompare didn't understand
 * magnitudes.
 *
 * The target value may use magnitudes of kilobytes (k, ki),
 * megabytes (m, mi), or gigabytes (g, gi).  Those suffixed
 * with an i use the appropriate 2**n version in accordance with the
 * IEC standard: http://physics.nist.gov/cuu/Units/binary.html
 *
 * Based on the Perl Number::Compare module.
 *
 * @author    Fabien Potencier <fabien@symfony.com> PHP port
 * @author    Richard Clamp <richardc@unixbeard.net> Perl version
 * @copyright 2004-2005 Fabien Potencier <fabien@symfony.com>
 * @copyright 2002 Richard Clamp <richardc@unixbeard.net>
 *
 * @see http://physics.nist.gov/cuu/Units/binary.html
 */
class NumberComparator extends Comparator
{
    /**
     * @param string|int $test A comparison string or an integer
     *
     * @throws \InvalidArgumentException If the test is not understood
     */
    public function __construct($test)
    {
        if (!preg_match('#^\s*(==|!=|[<>]=?)?\s*([0-9\.]+)\s*([kmg]i?)?\s*$#i', $test, $matches)) {
            throw new \InvalidArgumentException(sprintf('Don\'t understand "%s" as a number test.', $test));
        }

        $target = $matches[2];
        if (!is_numeric($target)) {
            throw new \InvalidArgumentException(sprintf('Invalid number "%s".', $target));
        }
        if (isset($matches[3])) {
            // magnitude
            switch (strtolower($matches[3])) {
                case 'k':
                    $target *= 1000;
                    break;
                case 'ki':
                    $target *= 1024;
                    break;
                case 'm':
                    $target *= 1000000;
                    break;
                case 'mi':
                    $target *= 1024 * 1024;
                    break;
                case 'g':
                    $target *= 1000000000;
                    break;
                case 'gi':
                    $target *= 1024 * 1024 * 1024;
                    break;
            }
        }

        $this->setTarget($target);
        $this->setOperator(isset($matches[1]) ? $matches[1] : '==');
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Finder\Comparator;

/**
 * Comparator.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class Comparator
{
    private $target;
    private $operator = '==';

    /**
     * Gets the target value.
     *
     * @return string The target value
     */
    public function getTarget()
    {
        return $this->target;
    }

    /**
     * Sets the target value.
     *
     * @param string $target The target value
     */
    public function setTarget($target)
    {
        $this->target = $target;
    }

    /**
     * Gets the comparison operator.
     *
     * @return string The operator
     */
    public function getOperator()
    {
        return $this->operator;
    }

    /**
     * Sets the comparison operator.
     *
     * @param string $operator A valid operator
     *
     * @throws \InvalidArgumentException
     */
    public function setOperator($operator)
    {
        if (!$operator) {
            $operator = '==';
        }

        if (!\in_array($operator, ['>', '<', '>=', '<=', '==', '!='])) {
            throw new \InvalidArgumentException(sprintf('Invalid operator "%s".', $operator));
        }

        $this->operator = $operator;
    }

    /**
     * Tests against the target.
     *
     * @param mixed $test A test value
     *
     * @return bool
     */
    public function test($test)
    {
        switch ($this->operator) {
            case '>':
                return $test > $this->target;
            case '>=':
                return $test >= $this->target;
            case '<':
                return $test < $this->target;
            case '<=':
                return $test <= $this->target;
            case '!=':
                return $test != $this->target;
        }

        return $test == $this->target;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Finder\Comparator;

/**
 * DateCompare compiles date comparisons.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class DateComparator extends Comparator
{
    /**
     * @param string $test A comparison string
     *
     * @throws \InvalidArgumentException If the test is not understood
     */
    public function __construct($test)
    {
        if (!preg_match('#^\s*(==|!=|[<>]=?|after|since|before|until)?\s*(.+?)\s*$#i', $test, $matches)) {
            throw new \InvalidArgumentException(sprintf('Don\'t understand "%s" as a date test.', $test));
        }

        try {
            $date = new \DateTime($matches[2]);
            $target = $date->format('U');
        } catch (\Exception $e) {
            throw new \InvalidArgumentException(sprintf('"%s" is not a valid date.', $matches[2]));
        }

        $operator = isset($matches[1]) ? $matches[1] : '==';
        if ('since' === $operator || 'after' === $operator) {
            $operator = '>';
        }

        if ('until' === $operator || 'before' === $operator) {
            $operator = '<';
        }

        $this->setOperator($operator);
        $this->setTarget($target);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Finder;

use Symfony\Component\Finder\Comparator\DateComparator;
use Symfony\Component\Finder\Comparator\NumberComparator;
use Symfony\Component\Finder\Iterator\CustomFilterIterator;
use Symfony\Component\Finder\Iterator\DateRangeFilterIterator;
use Symfony\Component\Finder\Iterator\DepthRangeFilterIterator;
use Symfony\Component\Finder\Iterator\ExcludeDirectoryFilterIterator;
use Symfony\Component\Finder\Iterator\FilecontentFilterIterator;
use Symfony\Component\Finder\Iterator\FilenameFilterIterator;
use Symfony\Component\Finder\Iterator\SizeRangeFilterIterator;
use Symfony\Component\Finder\Iterator\SortableIterator;

/**
 * Finder allows to build rules to find files and directories.
 *
 * It is a thin wrapper around several specialized iterator classes.
 *
 * All rules may be invoked several times.
 *
 * All methods return the current Finder object to allow chaining:
 *
 *     $finder = Finder::create()->files()->name('*.php')->in(__DIR__);
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class Finder implements \IteratorAggregate, \Countable
{
    const IGNORE_VCS_FILES = 1;
    const IGNORE_DOT_FILES = 2;

    private $mode = 0;
    private $names = [];
    private $notNames = [];
    private $exclude = [];
    private $filters = [];
    private $depths = [];
    private $sizes = [];
    private $followLinks = false;
    private $sort = false;
    private $ignore = 0;
    private $dirs = [];
    private $dates = [];
    private $iterators = [];
    private $contains = [];
    private $notContains = [];
    private $paths = [];
    private $notPaths = [];
    private $ignoreUnreadableDirs = false;

    private static $vcsPatterns = ['.svn', '_svn', 'CVS', '_darcs', '.arch-params', '.monotone', '.bzr', '.git', '.hg'];

    public function __construct()
    {
        $this->ignore = static::IGNORE_VCS_FILES | static::IGNORE_DOT_FILES;
    }

    /**
     * Creates a new Finder.
     *
     * @return static
     */
    public static function create()
    {
        return new static();
    }

    /**
     * Restricts the matching to directories only.
     *
     * @return $this
     */
    public function directories()
    {
        $this->mode = Iterator\FileTypeFilterIterator::ONLY_DIRECTORIES;

        return $this;
    }

    /**
     * Restricts the matching to files only.
     *
     * @return $this
     */
    public function files()
    {
        $this->mode = Iterator\FileTypeFilterIterator::ONLY_FILES;

        return $this;
    }

    /**
     * Adds tests for the directory depth.
     *
     * Usage:
     *
     *     $finder->depth('> 1') // the Finder will start matching at level 1.
     *     $finder->depth('< 3') // the Finder will descend at most 3 levels of directories below the starting point.
     *
     * @param string|int $level The depth level expression
     *
     * @return $this
     *
     * @see DepthRangeFilterIterator
     * @see NumberComparator
     */
    public function depth($level)
    {
        $this->depths[] = new Comparator\NumberComparator($level);

        return $this;
    }

    /**
     * Adds tests for file dates (last modified).
     *
     * The date must be something that strtotime() is able to parse:
     *
     *     $finder->date('since yesterday');
     *     $finder->date('until 2 days ago');
     *     $finder->date('> now - 2 hours');
     *     $finder->date('>= 2005-10-15');
     *
     * @param string $date A date range string
     *
     * @return $this
     *
     * @see strtotime
     * @see DateRangeFilterIterator
     * @see DateComparator
     */
    public function date($date)
    {
        $this->dates[] = new Comparator\DateComparator($date);

        return $this;
    }

    /**
     * Adds rules that files must match.
     *
     * You can use patterns (delimited with / sign), globs or simple strings.
     *
     *     $finder->name('*.php')
     *     $finder->name('/\.php$/') // same as above
     *     $finder->name('test.php')
     *
     * @param string $pattern A pattern (a regexp, a glob, or a string)
     *
     * @return $this
     *
     * @see FilenameFilterIterator
     */
    public function name($pattern)
    {
        $this->names[] = $pattern;

        return $this;
    }

    /**
     * Adds rules that files must not match.
     *
     * @param string $pattern A pattern (a regexp, a glob, or a string)
     *
     * @return $this
     *
     * @see FilenameFilterIterator
     */
    public function notName($pattern)
    {
        $this->notNames[] = $pattern;

        return $this;
    }

    /**
     * Adds tests that file contents must match.
     *
     * Strings or PCRE patterns can be used:
     *
     *     $finder->contains('Lorem ipsum')
     *     $finder->contains('/Lorem ipsum/i')
     *
     * @param string $pattern A pattern (string or regexp)
     *
     * @return $this
     *
     * @see FilecontentFilterIterator
     */
    public function contains($pattern)
    {
        $this->contains[] = $pattern;

        return $this;
    }

    /**
     * Adds tests that file contents must not match.
     *
     * Strings or PCRE patterns can be used:
     *
     *     $finder->notContains('Lorem ipsum')
     *     $finder->notContains('/Lorem ipsum/i')
     *
     * @param string $pattern A pattern (string or regexp)
     *
     * @return $this
     *
     * @see FilecontentFilterIterator
     */
    public function notContains($pattern)
    {
        $this->notContains[] = $pattern;

        return $this;
    }

    /**
     * Adds rules that filenames must match.
     *
     * You can use patterns (delimited with / sign) or simple strings.
     *
     *     $finder->path('some/special/dir')
     *     $finder->path('/some\/special\/dir/') // same as above
     *
     * Use only / as dirname separator.
     *
     * @param string $pattern A pattern (a regexp or a string)
     *
     * @return $this
     *
     * @see FilenameFilterIterator
     */
    public function path($pattern)
    {
        $this->paths[] = $pattern;

        return $this;
    }

    /**
     * Adds rules that filenames must not match.
     *
     * You can use patterns (delimited with / sign) or simple strings.
     *
     *     $finder->notPath('some/special/dir')
     *     $finder->notPath('/some\/special\/dir/') // same as above
     *
     * Use only / as dirname separator.
     *
     * @param string $pattern A pattern (a regexp or a string)
     *
     * @return $this
     *
     * @see FilenameFilterIterator
     */
    public function notPath($pattern)
    {
        $this->notPaths[] = $pattern;

        return $this;
    }

    /**
     * Adds tests for file sizes.
     *
     *     $finder->size('> 10K');
     *     $finder->size('<= 1Ki');
     *     $finder->size(4);
     *
     * @param string|int $size A size range string or an integer
     *
     * @return $this
     *
     * @see SizeRangeFilterIterator
     * @see NumberComparator
     */
    public function size($size)
    {
        $this->sizes[] = new Comparator\NumberComparator($size);

        return $this;
    }

    /**
     * Excludes directories.
     *
     * Directories passed as argument must be relative to the ones defined with the `in()` method. For example:
     *
     *     $finder->in(__DIR__)->exclude('ruby');
     *
     * @param string|array $dirs A directory path or an array of directories
     *
     * @return $this
     *
     * @see ExcludeDirectoryFilterIterator
     */
    public function exclude($dirs)
    {
        $this->exclude = array_merge($this->exclude, (array) $dirs);

        return $this;
    }

    /**
     * Excludes "hidden" directories and files (starting with a dot).
     *
     * This option is enabled by default.
     *
     * @param bool $ignoreDotFiles Whether to exclude "hidden" files or not
     *
     * @return $this
     *
     * @see ExcludeDirectoryFilterIterator
     */
    public function ignoreDotFiles($ignoreDotFiles)
    {
        if ($ignoreDotFiles) {
            $this->ignore |= static::IGNORE_DOT_FILES;
        } else {
            $this->ignore &= ~static::IGNORE_DOT_FILES;
        }

        return $this;
    }

    /**
     * Forces the finder to ignore version control directories.
     *
     * This option is enabled by default.
     *
     * @param bool $ignoreVCS Whether to exclude VCS files or not
     *
     * @return $this
     *
     * @see ExcludeDirectoryFilterIterator
     */
    public function ignoreVCS($ignoreVCS)
    {
        if ($ignoreVCS) {
            $this->ignore |= static::IGNORE_VCS_FILES;
        } else {
            $this->ignore &= ~static::IGNORE_VCS_FILES;
        }

        return $this;
    }

    /**
     * Adds VCS patterns.
     *
     * @see ignoreVCS()
     *
     * @param string|string[] $pattern VCS patterns to ignore
     */
    public static function addVCSPattern($pattern)
    {
        foreach ((array) $pattern as $p) {
            self::$vcsPatterns[] = $p;
        }

        self::$vcsPatterns = array_unique(self::$vcsPatterns);
    }

    /**
     * Sorts files and directories by an anonymous function.
     *
     * The anonymous function receives two \SplFileInfo instances to compare.
     *
     * This can be slow as all the matching files and directories must be retrieved for comparison.
     *
     * @return $this
     *
     * @see SortableIterator
     */
    public function sort(\Closure $closure)
    {
        $this->sort = $closure;

        return $this;
    }

    /**
     * Sorts files and directories by name.
     *
     * This can be slow as all the matching files and directories must be retrieved for comparison.
     *
     * @return $this
     *
     * @see SortableIterator
     */
    public function sortByName()
    {
        $this->sort = Iterator\SortableIterator::SORT_BY_NAME;

        return $this;
    }

    /**
     * Sorts files and directories by type (directories before files), then by name.
     *
     * This can be slow as all the matching files and directories must be retrieved for comparison.
     *
     * @return $this
     *
     * @see SortableIterator
     */
    public function sortByType()
    {
        $this->sort = Iterator\SortableIterator::SORT_BY_TYPE;

        return $this;
    }

    /**
     * Sorts files and directories by the last accessed time.
     *
     * This is the time that the file was last accessed, read or written to.
     *
     * This can be slow as all the matching files and directories must be retrieved for comparison.
     *
     * @return $this
     *
     * @see SortableIterator
     */
    public function sortByAccessedTime()
    {
        $this->sort = Iterator\SortableIterator::SORT_BY_ACCESSED_TIME;

        return $this;
    }

    /**
     * Sorts files and directories by the last inode changed time.
     *
     * This is the time that the inode information was last modified (permissions, owner, group or other metadata).
     *
     * On Windows, since inode is not available, changed time is actually the file creation time.
     *
     * This can be slow as all the matching files and directories must be retrieved for comparison.
     *
     * @return $this
     *
     * @see SortableIterator
     */
    public function sortByChangedTime()
    {
        $this->sort = Iterator\SortableIterator::SORT_BY_CHANGED_TIME;

        return $this;
    }

    /**
     * Sorts files and directories by the last modified time.
     *
     * This is the last time the actual contents of the file were last modified.
     *
     * This can be slow as all the matching files and directories must be retrieved for comparison.
     *
     * @return $this
     *
     * @see SortableIterator
     */
    public function sortByModifiedTime()
    {
        $this->sort = Iterator\SortableIterator::SORT_BY_MODIFIED_TIME;

        return $this;
    }

    /**
     * Filters the iterator with an anonymous function.
     *
     * The anonymous function receives a \SplFileInfo and must return false
     * to remove files.
     *
     * @return $this
     *
     * @see CustomFilterIterator
     */
    public function filter(\Closure $closure)
    {
        $this->filters[] = $closure;

        return $this;
    }

    /**
     * Forces the following of symlinks.
     *
     * @return $this
     */
    public function followLinks()
    {
        $this->followLinks = true;

        return $this;
    }

    /**
     * Tells finder to ignore unreadable directories.
     *
     * By default, scanning unreadable directories content throws an AccessDeniedException.
     *
     * @param bool $ignore
     *
     * @return $this
     */
    public function ignoreUnreadableDirs($ignore = true)
    {
        $this->ignoreUnreadableDirs = (bool) $ignore;

        return $this;
    }

    /**
     * Searches files and directories which match defined rules.
     *
     * @param string|string[] $dirs A directory path or an array of directories
     *
     * @return $this
     *
     * @throws \InvalidArgumentException if one of the directories does not exist
     */
    public function in($dirs)
    {
        $resolvedDirs = [];

        foreach ((array) $dirs as $dir) {
            if (is_dir($dir)) {
                $resolvedDirs[] = $this->normalizeDir($dir);
            } elseif ($glob = glob($dir, (\defined('GLOB_BRACE') ? GLOB_BRACE : 0) | GLOB_ONLYDIR)) {
                $resolvedDirs = array_merge($resolvedDirs, array_map([$this, 'normalizeDir'], $glob));
            } else {
                throw new \InvalidArgumentException(sprintf('The "%s" directory does not exist.', $dir));
            }
        }

        $this->dirs = array_merge($this->dirs, $resolvedDirs);

        return $this;
    }

    /**
     * Returns an Iterator for the current Finder configuration.
     *
     * This method implements the IteratorAggregate interface.
     *
     * @return \Iterator|SplFileInfo[] An iterator
     *
     * @throws \LogicException if the in() method has not been called
     */
    public function getIterator()
    {
        if (0 === \count($this->dirs) && 0 === \count($this->iterators)) {
            throw new \LogicException('You must call one of in() or append() methods before iterating over a Finder.');
        }

        if (1 === \count($this->dirs) && 0 === \count($this->iterators)) {
            return $this->searchInDirectory($this->dirs[0]);
        }

        $iterator = new \AppendIterator();
        foreach ($this->dirs as $dir) {
            $iterator->append($this->searchInDirectory($dir));
        }

        foreach ($this->iterators as $it) {
            $iterator->append($it);
        }

        return $iterator;
    }

    /**
     * Appends an existing set of files/directories to the finder.
     *
     * The set can be another Finder, an Iterator, an IteratorAggregate, or even a plain array.
     *
     * @param iterable $iterator
     *
     * @return $this
     *
     * @throws \InvalidArgumentException when the given argument is not iterable
     */
    public function append($iterator)
    {
        if ($iterator instanceof \IteratorAggregate) {
            $this->iterators[] = $iterator->getIterator();
        } elseif ($iterator instanceof \Iterator) {
            $this->iterators[] = $iterator;
        } elseif ($iterator instanceof \Traversable || \is_array($iterator)) {
            $it = new \ArrayIterator();
            foreach ($iterator as $file) {
                $it->append($file instanceof \SplFileInfo ? $file : new \SplFileInfo($file));
            }
            $this->iterators[] = $it;
        } else {
            throw new \InvalidArgumentException('Finder::append() method wrong argument type.');
        }

        return $this;
    }

    /**
     * Check if the any results were found.
     *
     * @return bool
     */
    public function hasResults()
    {
        foreach ($this->getIterator() as $_) {
            return true;
        }

        return false;
    }

    /**
     * Counts all the results collected by the iterators.
     *
     * @return int
     */
    public function count()
    {
        return iterator_count($this->getIterator());
    }

    /**
     * @param string $dir
     *
     * @return \Iterator
     */
    private function searchInDirectory($dir)
    {
        $exclude = $this->exclude;
        $notPaths = $this->notPaths;

        if (static::IGNORE_VCS_FILES === (static::IGNORE_VCS_FILES & $this->ignore)) {
            $exclude = array_merge($exclude, self::$vcsPatterns);
        }

        if (static::IGNORE_DOT_FILES === (static::IGNORE_DOT_FILES & $this->ignore)) {
            $notPaths[] = '#(^|/)\..+(/|$)#';
        }

        $minDepth = 0;
        $maxDepth = PHP_INT_MAX;

        foreach ($this->depths as $comparator) {
            switch ($comparator->getOperator()) {
                case '>':
                    $minDepth = $comparator->getTarget() + 1;
                    break;
                case '>=':
                    $minDepth = $comparator->getTarget();
                    break;
                case '<':
                    $maxDepth = $comparator->getTarget() - 1;
                    break;
                case '<=':
                    $maxDepth = $comparator->getTarget();
                    break;
                default:
                    $minDepth = $maxDepth = $comparator->getTarget();
            }
        }

        $flags = \RecursiveDirectoryIterator::SKIP_DOTS;

        if ($this->followLinks) {
            $flags |= \RecursiveDirectoryIterator::FOLLOW_SYMLINKS;
        }

        $iterator = new Iterator\RecursiveDirectoryIterator($dir, $flags, $this->ignoreUnreadableDirs);

        if ($exclude) {
            $iterator = new Iterator\ExcludeDirectoryFilterIterator($iterator, $exclude);
        }

        $iterator = new \RecursiveIteratorIterator($iterator, \RecursiveIteratorIterator::SELF_FIRST);

        if ($minDepth > 0 || $maxDepth < PHP_INT_MAX) {
            $iterator = new Iterator\DepthRangeFilterIterator($iterator, $minDepth, $maxDepth);
        }

        if ($this->mode) {
            $iterator = new Iterator\FileTypeFilterIterator($iterator, $this->mode);
        }

        if ($this->names || $this->notNames) {
            $iterator = new Iterator\FilenameFilterIterator($iterator, $this->names, $this->notNames);
        }

        if ($this->contains || $this->notContains) {
            $iterator = new Iterator\FilecontentFilterIterator($iterator, $this->contains, $this->notContains);
        }

        if ($this->sizes) {
            $iterator = new Iterator\SizeRangeFilterIterator($iterator, $this->sizes);
        }

        if ($this->dates) {
            $iterator = new Iterator\DateRangeFilterIterator($iterator, $this->dates);
        }

        if ($this->filters) {
            $iterator = new Iterator\CustomFilterIterator($iterator, $this->filters);
        }

        if ($this->paths || $notPaths) {
            $iterator = new Iterator\PathFilterIterator($iterator, $this->paths, $notPaths);
        }

        if ($this->sort) {
            $iteratorAggregate = new Iterator\SortableIterator($iterator, $this->sort);
            $iterator = $iteratorAggregate->getIterator();
        }

        return $iterator;
    }

    /**
     * Normalizes given directory names by removing trailing slashes.
     *
     * Excluding: (s)ftp:// wrapper
     *
     * @param string $dir
     *
     * @return string
     */
    private function normalizeDir($dir)
    {
        $dir = rtrim($dir, '/'.\DIRECTORY_SEPARATOR);

        if (preg_match('#^s?ftp://#', $dir)) {
            $dir .= '/';
        }

        return $dir;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Finder;

/**
 * Glob matches globbing patterns against text.
 *
 *     if match_glob("foo.*", "foo.bar") echo "matched\n";
 *
 *     // prints foo.bar and foo.baz
 *     $regex = glob_to_regex("foo.*");
 *     for (['foo.bar', 'foo.baz', 'foo', 'bar'] as $t)
 *     {
 *         if (/$regex/) echo "matched: $car\n";
 *     }
 *
 * Glob implements glob(3) style matching that can be used to match
 * against text, rather than fetching names from a filesystem.
 *
 * Based on the Perl Text::Glob module.
 *
 * @author Fabien Potencier <fabien@symfony.com> PHP port
 * @author     Richard Clamp <richardc@unixbeard.net> Perl version
 * @copyright  2004-2005 Fabien Potencier <fabien@symfony.com>
 * @copyright  2002 Richard Clamp <richardc@unixbeard.net>
 */
class Glob
{
    /**
     * Returns a regexp which is the equivalent of the glob pattern.
     *
     * @param string $glob                The glob pattern
     * @param bool   $strictLeadingDot
     * @param bool   $strictWildcardSlash
     * @param string $delimiter           Optional delimiter
     *
     * @return string regex The regexp
     */
    public static function toRegex($glob, $strictLeadingDot = true, $strictWildcardSlash = true, $delimiter = '#')
    {
        $firstByte = true;
        $escaping = false;
        $inCurlies = 0;
        $regex = '';
        $sizeGlob = \strlen($glob);
        for ($i = 0; $i < $sizeGlob; ++$i) {
            $car = $glob[$i];
            if ($firstByte && $strictLeadingDot && '.' !== $car) {
                $regex .= '(?=[^\.])';
            }

            $firstByte = '/' === $car;

            if ($firstByte && $strictWildcardSlash && isset($glob[$i + 2]) && '**' === $glob[$i + 1].$glob[$i + 2] && (!isset($glob[$i + 3]) || '/' === $glob[$i + 3])) {
                $car = '[^/]++/';
                if (!isset($glob[$i + 3])) {
                    $car .= '?';
                }

                if ($strictLeadingDot) {
                    $car = '(?=[^\.])'.$car;
                }

                $car = '/(?:'.$car.')*';
                $i += 2 + isset($glob[$i + 3]);

                if ('/' === $delimiter) {
                    $car = str_replace('/', '\\/', $car);
                }
            }

            if ($delimiter === $car || '.' === $car || '(' === $car || ')' === $car || '|' === $car || '+' === $car || '^' === $car || '$' === $car) {
                $regex .= "\\$car";
            } elseif ('*' === $car) {
                $regex .= $escaping ? '\\*' : ($strictWildcardSlash ? '[^/]*' : '.*');
            } elseif ('?' === $car) {
                $regex .= $escaping ? '\\?' : ($strictWildcardSlash ? '[^/]' : '.');
            } elseif ('{' === $car) {
                $regex .= $escaping ? '\\{' : '(';
                if (!$escaping) {
                    ++$inCurlies;
                }
            } elseif ('}' === $car && $inCurlies) {
                $regex .= $escaping ? '}' : ')';
                if (!$escaping) {
                    --$inCurlies;
                }
            } elseif (',' === $car && $inCurlies) {
                $regex .= $escaping ? ',' : '|';
            } elseif ('\\' === $car) {
                if ($escaping) {
                    $regex .= '\\\\';
                    $escaping = false;
                } else {
                    $escaping = true;
                }

                continue;
            } else {
                $regex .= $car;
            }
            $escaping = false;
        }

        return $delimiter.'^'.$regex.'$'.$delimiter;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Finder\Iterator;

/**
 * FilecontentFilterIterator filters files by their contents using patterns (regexps or strings).
 *
 * @author Fabien Potencier  <fabien@symfony.com>
 * @author WÅ‚odzimierz Gajda <gajdaw@gajdaw.pl>
 */
class FilecontentFilterIterator extends MultiplePcreFilterIterator
{
    /**
     * Filters the iterator values.
     *
     * @return bool true if the value should be kept, false otherwise
     */
    public function accept()
    {
        if (!$this->matchRegexps && !$this->noMatchRegexps) {
            return true;
        }

        $fileinfo = $this->current();

        if ($fileinfo->isDir() || !$fileinfo->isReadable()) {
            return false;
        }

        $content = $fileinfo->getContents();
        if (!$content) {
            return false;
        }

        return $this->isAccepted($content);
    }

    /**
     * Converts string to regexp if necessary.
     *
     * @param string $str Pattern: string or regexp
     *
     * @return string regexp corresponding to a given string or regexp
     */
    protected function toRegex($str)
    {
        return $this->isRegex($str) ? $str : '/'.preg_quote($str, '/').'/';
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Finder\Iterator;

/**
 * MultiplePcreFilterIterator filters files using patterns (regexps, globs or strings).
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
abstract class MultiplePcreFilterIterator extends FilterIterator
{
    protected $matchRegexps = [];
    protected $noMatchRegexps = [];

    /**
     * @param \Iterator $iterator        The Iterator to filter
     * @param array     $matchPatterns   An array of patterns that need to match
     * @param array     $noMatchPatterns An array of patterns that need to not match
     */
    public function __construct(\Iterator $iterator, array $matchPatterns, array $noMatchPatterns)
    {
        foreach ($matchPatterns as $pattern) {
            $this->matchRegexps[] = $this->toRegex($pattern);
        }

        foreach ($noMatchPatterns as $pattern) {
            $this->noMatchRegexps[] = $this->toRegex($pattern);
        }

        parent::__construct($iterator);
    }

    /**
     * Checks whether the string is accepted by the regex filters.
     *
     * If there is no regexps defined in the class, this method will accept the string.
     * Such case can be handled by child classes before calling the method if they want to
     * apply a different behavior.
     *
     * @param string $string The string to be matched against filters
     *
     * @return bool
     */
    protected function isAccepted($string)
    {
        // should at least not match one rule to exclude
        foreach ($this->noMatchRegexps as $regex) {
            if (preg_match($regex, $string)) {
                return false;
            }
        }

        // should at least match one rule
        if ($this->matchRegexps) {
            foreach ($this->matchRegexps as $regex) {
                if (preg_match($regex, $string)) {
                    return true;
                }
            }

            return false;
        }

        // If there is no match rules, the file is accepted
        return true;
    }

    /**
     * Checks whether the string is a regex.
     *
     * @param string $str
     *
     * @return bool Whether the given string is a regex
     */
    protected function isRegex($str)
    {
        if (preg_match('/^(.{3,}?)[imsxuADU]*$/', $str, $m)) {
            $start = substr($m[1], 0, 1);
            $end = substr($m[1], -1);

            if ($start === $end) {
                return !preg_match('/[*?[:alnum:] \\\\]/', $start);
            }

            foreach ([['{', '}'], ['(', ')'], ['[', ']'], ['<', '>']] as $delimiters) {
                if ($start === $delimiters[0] && $end === $delimiters[1]) {
                    return true;
                }
            }
        }

        return false;
    }

    /**
     * Converts string into regexp.
     *
     * @param string $str Pattern
     *
     * @return string regexp corresponding to a given string
     */
    abstract protected function toRegex($str);
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Finder\Iterator;

use Symfony\Component\Finder\Comparator\NumberComparator;

/**
 * SizeRangeFilterIterator filters out files that are not in the given size range.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class SizeRangeFilterIterator extends FilterIterator
{
    private $comparators = [];

    /**
     * @param \Iterator          $iterator    The Iterator to filter
     * @param NumberComparator[] $comparators An array of NumberComparator instances
     */
    public function __construct(\Iterator $iterator, array $comparators)
    {
        $this->comparators = $comparators;

        parent::__construct($iterator);
    }

    /**
     * Filters the iterator values.
     *
     * @return bool true if the value should be kept, false otherwise
     */
    public function accept()
    {
        $fileinfo = $this->current();
        if (!$fileinfo->isFile()) {
            return true;
        }

        $filesize = $fileinfo->getSize();
        foreach ($this->comparators as $compare) {
            if (!$compare->test($filesize)) {
                return false;
            }
        }

        return true;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Finder\Iterator;

use Symfony\Component\Finder\Glob;

/**
 * FilenameFilterIterator filters files by patterns (a regexp, a glob, or a string).
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class FilenameFilterIterator extends MultiplePcreFilterIterator
{
    /**
     * Filters the iterator values.
     *
     * @return bool true if the value should be kept, false otherwise
     */
    public function accept()
    {
        return $this->isAccepted($this->current()->getFilename());
    }

    /**
     * Converts glob to regexp.
     *
     * PCRE patterns are left unchanged.
     * Glob strings are transformed with Glob::toRegex().
     *
     * @param string $str Pattern: glob or regexp
     *
     * @return string regexp corresponding to a given glob or regexp
     */
    protected function toRegex($str)
    {
        return $this->isRegex($str) ? $str : Glob::toRegex($str);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Finder\Iterator;

use Symfony\Component\Finder\Comparator\DateComparator;

/**
 * DateRangeFilterIterator filters out files that are not in the given date range (last modified dates).
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class DateRangeFilterIterator extends FilterIterator
{
    private $comparators = [];

    /**
     * @param \Iterator        $iterator    The Iterator to filter
     * @param DateComparator[] $comparators An array of DateComparator instances
     */
    public function __construct(\Iterator $iterator, array $comparators)
    {
        $this->comparators = $comparators;

        parent::__construct($iterator);
    }

    /**
     * Filters the iterator values.
     *
     * @return bool true if the value should be kept, false otherwise
     */
    public function accept()
    {
        $fileinfo = $this->current();

        if (!file_exists($fileinfo->getPathname())) {
            return false;
        }

        $filedate = $fileinfo->getMTime();
        foreach ($this->comparators as $compare) {
            if (!$compare->test($filedate)) {
                return false;
            }
        }

        return true;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Finder\Iterator;

/**
 * CustomFilterIterator filters files by applying anonymous functions.
 *
 * The anonymous function receives a \SplFileInfo and must return false
 * to remove files.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class CustomFilterIterator extends FilterIterator
{
    private $filters = [];

    /**
     * @param \Iterator  $iterator The Iterator to filter
     * @param callable[] $filters  An array of PHP callbacks
     *
     * @throws \InvalidArgumentException
     */
    public function __construct(\Iterator $iterator, array $filters)
    {
        foreach ($filters as $filter) {
            if (!\is_callable($filter)) {
                throw new \InvalidArgumentException('Invalid PHP callback.');
            }
        }
        $this->filters = $filters;

        parent::__construct($iterator);
    }

    /**
     * Filters the iterator values.
     *
     * @return bool true if the value should be kept, false otherwise
     */
    public function accept()
    {
        $fileinfo = $this->current();

        foreach ($this->filters as $filter) {
            if (false === \call_user_func($filter, $fileinfo)) {
                return false;
            }
        }

        return true;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Finder\Iterator;

use Symfony\Component\Finder\Exception\AccessDeniedException;
use Symfony\Component\Finder\SplFileInfo;

/**
 * Extends the \RecursiveDirectoryIterator to support relative paths.
 *
 * @author Victor Berchet <victor@suumit.com>
 */
class RecursiveDirectoryIterator extends \RecursiveDirectoryIterator
{
    /**
     * @var bool
     */
    private $ignoreUnreadableDirs;

    /**
     * @var bool
     */
    private $rewindable;

    // these 3 properties take part of the performance optimization to avoid redoing the same work in all iterations
    private $rootPath;
    private $subPath;
    private $directorySeparator = '/';

    /**
     * @param string $path
     * @param int    $flags
     * @param bool   $ignoreUnreadableDirs
     *
     * @throws \RuntimeException
     */
    public function __construct($path, $flags, $ignoreUnreadableDirs = false)
    {
        if ($flags & (self::CURRENT_AS_PATHNAME | self::CURRENT_AS_SELF)) {
            throw new \RuntimeException('This iterator only support returning current as fileinfo.');
        }

        parent::__construct($path, $flags);
        $this->ignoreUnreadableDirs = $ignoreUnreadableDirs;
        $this->rootPath = $path;
        if ('/' !== \DIRECTORY_SEPARATOR && !($flags & self::UNIX_PATHS)) {
            $this->directorySeparator = \DIRECTORY_SEPARATOR;
        }
    }

    /**
     * Return an instance of SplFileInfo with support for relative paths.
     *
     * @return SplFileInfo File information
     */
    public function current()
    {
        // the logic here avoids redoing the same work in all iterations

        if (null === $subPathname = $this->subPath) {
            $subPathname = $this->subPath = (string) $this->getSubPath();
        }
        if ('' !== $subPathname) {
            $subPathname .= $this->directorySeparator;
        }
        $subPathname .= $this->getFilename();

        return new SplFileInfo($this->rootPath.$this->directorySeparator.$subPathname, $this->subPath, $subPathname);
    }

    /**
     * @return \RecursiveIterator
     *
     * @throws AccessDeniedException
     */
    public function getChildren()
    {
        try {
            $children = parent::getChildren();

            if ($children instanceof self) {
                // parent method will call the constructor with default arguments, so unreadable dirs won't be ignored anymore
                $children->ignoreUnreadableDirs = $this->ignoreUnreadableDirs;

                // performance optimization to avoid redoing the same work in all children
                $children->rewindable = &$this->rewindable;
                $children->rootPath = $this->rootPath;
            }

            return $children;
        } catch (\UnexpectedValueException $e) {
            if ($this->ignoreUnreadableDirs) {
                // If directory is unreadable and finder is set to ignore it, a fake empty content is returned.
                return new \RecursiveArrayIterator([]);
            } else {
                throw new AccessDeniedException($e->getMessage(), $e->getCode(), $e);
            }
        }
    }

    /**
     * Do nothing for non rewindable stream.
     */
    public function rewind()
    {
        if (false === $this->isRewindable()) {
            return;
        }

        // @see https://bugs.php.net/68557
        if (\PHP_VERSION_ID < 50523 || \PHP_VERSION_ID >= 50600 && \PHP_VERSION_ID < 50607) {
            parent::next();
        }

        parent::rewind();
    }

    /**
     * Checks if the stream is rewindable.
     *
     * @return bool true when the stream is rewindable, false otherwise
     */
    public function isRewindable()
    {
        if (null !== $this->rewindable) {
            return $this->rewindable;
        }

        // workaround for an HHVM bug, should be removed when https://github.com/facebook/hhvm/issues/7281 is fixed
        if ('' === $this->getPath()) {
            return $this->rewindable = false;
        }

        if (false !== $stream = @opendir($this->getPath())) {
            $infos = stream_get_meta_data($stream);
            closedir($stream);

            if ($infos['seekable']) {
                return $this->rewindable = true;
            }
        }

        return $this->rewindable = false;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Finder\Iterator;

/**
 * ExcludeDirectoryFilterIterator filters out directories.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ExcludeDirectoryFilterIterator extends FilterIterator implements \RecursiveIterator
{
    private $iterator;
    private $isRecursive;
    private $excludedDirs = [];
    private $excludedPattern;

    /**
     * @param \Iterator $iterator    The Iterator to filter
     * @param string[]  $directories An array of directories to exclude
     */
    public function __construct(\Iterator $iterator, array $directories)
    {
        $this->iterator = $iterator;
        $this->isRecursive = $iterator instanceof \RecursiveIterator;
        $patterns = [];
        foreach ($directories as $directory) {
            $directory = rtrim($directory, '/');
            if (!$this->isRecursive || false !== strpos($directory, '/')) {
                $patterns[] = preg_quote($directory, '#');
            } else {
                $this->excludedDirs[$directory] = true;
            }
        }
        if ($patterns) {
            $this->excludedPattern = '#(?:^|/)(?:'.implode('|', $patterns).')(?:/|$)#';
        }

        parent::__construct($iterator);
    }

    /**
     * Filters the iterator values.
     *
     * @return bool True if the value should be kept, false otherwise
     */
    public function accept()
    {
        if ($this->isRecursive && isset($this->excludedDirs[$this->getFilename()]) && $this->isDir()) {
            return false;
        }

        if ($this->excludedPattern) {
            $path = $this->isDir() ? $this->current()->getRelativePathname() : $this->current()->getRelativePath();
            $path = str_replace('\\', '/', $path);

            return !preg_match($this->excludedPattern, $path);
        }

        return true;
    }

    public function hasChildren()
    {
        return $this->isRecursive && $this->iterator->hasChildren();
    }

    public function getChildren()
    {
        $children = new self($this->iterator->getChildren(), []);
        $children->excludedDirs = $this->excludedDirs;
        $children->excludedPattern = $this->excludedPattern;

        return $children;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Finder\Iterator;

/**
 * SortableIterator applies a sort on a given Iterator.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class SortableIterator implements \IteratorAggregate
{
    const SORT_BY_NAME = 1;
    const SORT_BY_TYPE = 2;
    const SORT_BY_ACCESSED_TIME = 3;
    const SORT_BY_CHANGED_TIME = 4;
    const SORT_BY_MODIFIED_TIME = 5;

    private $iterator;
    private $sort;

    /**
     * @param \Traversable $iterator The Iterator to filter
     * @param int|callable $sort     The sort type (SORT_BY_NAME, SORT_BY_TYPE, or a PHP callback)
     *
     * @throws \InvalidArgumentException
     */
    public function __construct(\Traversable $iterator, $sort)
    {
        $this->iterator = $iterator;

        if (self::SORT_BY_NAME === $sort) {
            $this->sort = static function ($a, $b) {
                return strcmp($a->getRealPath() ?: $a->getPathname(), $b->getRealPath() ?: $b->getPathname());
            };
        } elseif (self::SORT_BY_TYPE === $sort) {
            $this->sort = static function ($a, $b) {
                if ($a->isDir() && $b->isFile()) {
                    return -1;
                } elseif ($a->isFile() && $b->isDir()) {
                    return 1;
                }

                return strcmp($a->getRealPath() ?: $a->getPathname(), $b->getRealPath() ?: $b->getPathname());
            };
        } elseif (self::SORT_BY_ACCESSED_TIME === $sort) {
            $this->sort = static function ($a, $b) {
                return $a->getATime() - $b->getATime();
            };
        } elseif (self::SORT_BY_CHANGED_TIME === $sort) {
            $this->sort = static function ($a, $b) {
                return $a->getCTime() - $b->getCTime();
            };
        } elseif (self::SORT_BY_MODIFIED_TIME === $sort) {
            $this->sort = static function ($a, $b) {
                return $a->getMTime() - $b->getMTime();
            };
        } elseif (\is_callable($sort)) {
            $this->sort = $sort;
        } else {
            throw new \InvalidArgumentException('The SortableIterator takes a PHP callable or a valid built-in sort algorithm as an argument.');
        }
    }

    public function getIterator()
    {
        $array = iterator_to_array($this->iterator, true);
        uasort($array, $this->sort);

        return new \ArrayIterator($array);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Finder\Iterator;

/**
 * This iterator just overrides the rewind method in order to correct a PHP bug,
 * which existed before version 5.5.23/5.6.7.
 *
 * @see https://bugs.php.net/68557
 *
 * @author Alex Bogomazov
 *
 * @deprecated since 3.4, to be removed in 4.0.
 */
abstract class FilterIterator extends \FilterIterator
{
    /**
     * This is a workaround for the problem with \FilterIterator leaving inner \FilesystemIterator in wrong state after
     * rewind in some cases.
     *
     * @see FilterIterator::rewind()
     */
    public function rewind()
    {
        if (\PHP_VERSION_ID > 50607 || (\PHP_VERSION_ID > 50523 && \PHP_VERSION_ID < 50600)) {
            parent::rewind();

            return;
        }

        $iterator = $this;
        while ($iterator instanceof \OuterIterator) {
            $innerIterator = $iterator->getInnerIterator();

            if ($innerIterator instanceof RecursiveDirectoryIterator) {
                // this condition is necessary for iterators to work properly with non-local filesystems like ftp
                if ($innerIterator->isRewindable()) {
                    $innerIterator->next();
                    $innerIterator->rewind();
                }
            } elseif ($innerIterator instanceof \FilesystemIterator) {
                $innerIterator->next();
                $innerIterator->rewind();
            }

            $iterator = $innerIterator;
        }

        parent::rewind();
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Finder\Iterator;

/**
 * DepthRangeFilterIterator limits the directory depth.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class DepthRangeFilterIterator extends FilterIterator
{
    private $minDepth = 0;

    /**
     * @param \RecursiveIteratorIterator $iterator The Iterator to filter
     * @param int                        $minDepth The min depth
     * @param int                        $maxDepth The max depth
     */
    public function __construct(\RecursiveIteratorIterator $iterator, $minDepth = 0, $maxDepth = PHP_INT_MAX)
    {
        $this->minDepth = $minDepth;
        $iterator->setMaxDepth(PHP_INT_MAX === $maxDepth ? -1 : $maxDepth);

        parent::__construct($iterator);
    }

    /**
     * Filters the iterator values.
     *
     * @return bool true if the value should be kept, false otherwise
     */
    public function accept()
    {
        return $this->getInnerIterator()->getDepth() >= $this->minDepth;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Finder\Iterator;

/**
 * FileTypeFilterIterator only keeps files, directories, or both.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class FileTypeFilterIterator extends FilterIterator
{
    const ONLY_FILES = 1;
    const ONLY_DIRECTORIES = 2;

    private $mode;

    /**
     * @param \Iterator $iterator The Iterator to filter
     * @param int       $mode     The mode (self::ONLY_FILES or self::ONLY_DIRECTORIES)
     */
    public function __construct(\Iterator $iterator, $mode)
    {
        $this->mode = $mode;

        parent::__construct($iterator);
    }

    /**
     * Filters the iterator values.
     *
     * @return bool true if the value should be kept, false otherwise
     */
    public function accept()
    {
        $fileinfo = $this->current();
        if (self::ONLY_DIRECTORIES === (self::ONLY_DIRECTORIES & $this->mode) && $fileinfo->isFile()) {
            return false;
        } elseif (self::ONLY_FILES === (self::ONLY_FILES & $this->mode) && $fileinfo->isDir()) {
            return false;
        }

        return true;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Finder\Iterator;

/**
 * PathFilterIterator filters files by path patterns (e.g. some/special/dir).
 *
 * @author Fabien Potencier  <fabien@symfony.com>
 * @author WÅ‚odzimierz Gajda <gajdaw@gajdaw.pl>
 */
class PathFilterIterator extends MultiplePcreFilterIterator
{
    /**
     * Filters the iterator values.
     *
     * @return bool true if the value should be kept, false otherwise
     */
    public function accept()
    {
        $filename = $this->current()->getRelativePathname();

        if ('\\' === \DIRECTORY_SEPARATOR) {
            $filename = str_replace('\\', '/', $filename);
        }

        return $this->isAccepted($filename);
    }

    /**
     * Converts strings to regexp.
     *
     * PCRE patterns are left unchanged.
     *
     * Default conversion:
     *     'lorem/ipsum/dolor' ==>  'lorem\/ipsum\/dolor/'
     *
     * Use only / as directory separator (on Windows also).
     *
     * @param string $str Pattern: regexp or dirname
     *
     * @return string regexp corresponding to a given string or regexp
     */
    protected function toRegex($str)
    {
        return $this->isRegex($str) ? $str : '/'.preg_quote($str, '/').'/';
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Finder\Exception;

/**
 * @author Jean-FranÃ§ois Simon <jeanfrancois.simon@sensiolabs.com>
 */
class AccessDeniedException extends \UnexpectedValueException
{
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Finder\Exception;

/**
 * @author Jean-FranÃ§ois Simon <contact@jfsimon.fr>
 *
 * @deprecated since 3.3, to be removed in 4.0.
 */
interface ExceptionInterface
{
    /**
     * @return \Symfony\Component\Finder\Adapter\AdapterInterface
     */
    public function getAdapter();
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Yaml;

use Symfony\Component\Yaml\Exception\ParseException;
use Symfony\Component\Yaml\Tag\TaggedValue;

/**
 * Parser parses YAML strings to convert them to PHP arrays.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @final since version 3.4
 */
class Parser
{
    const TAG_PATTERN = '(?P<tag>![\w!.\/:-]+)';
    const BLOCK_SCALAR_HEADER_PATTERN = '(?P<separator>\||>)(?P<modifiers>\+|\-|\d+|\+\d+|\-\d+|\d+\+|\d+\-)?(?P<comments> +#.*)?';

    private $filename;
    private $offset = 0;
    private $totalNumberOfLines;
    private $lines = [];
    private $currentLineNb = -1;
    private $currentLine = '';
    private $refs = [];
    private $skippedLineNumbers = [];
    private $locallySkippedLineNumbers = [];
    private $refsBeingParsed = [];

    public function __construct()
    {
        if (\func_num_args() > 0) {
            @trigger_error(sprintf('The constructor arguments $offset, $totalNumberOfLines, $skippedLineNumbers of %s are deprecated and will be removed in 4.0', self::class), E_USER_DEPRECATED);

            $this->offset = func_get_arg(0);
            if (\func_num_args() > 1) {
                $this->totalNumberOfLines = func_get_arg(1);
            }
            if (\func_num_args() > 2) {
                $this->skippedLineNumbers = func_get_arg(2);
            }
        }
    }

    /**
     * Parses a YAML file into a PHP value.
     *
     * @param string $filename The path to the YAML file to be parsed
     * @param int    $flags    A bit field of PARSE_* constants to customize the YAML parser behavior
     *
     * @return mixed The YAML converted to a PHP value
     *
     * @throws ParseException If the file could not be read or the YAML is not valid
     */
    public function parseFile($filename, $flags = 0)
    {
        if (!is_file($filename)) {
            throw new ParseException(sprintf('File "%s" does not exist.', $filename));
        }

        if (!is_readable($filename)) {
            throw new ParseException(sprintf('File "%s" cannot be read.', $filename));
        }

        $this->filename = $filename;

        try {
            return $this->parse(file_get_contents($filename), $flags);
        } finally {
            $this->filename = null;
        }
    }

    /**
     * Parses a YAML string to a PHP value.
     *
     * @param string $value A YAML string
     * @param int    $flags A bit field of PARSE_* constants to customize the YAML parser behavior
     *
     * @return mixed A PHP value
     *
     * @throws ParseException If the YAML is not valid
     */
    public function parse($value, $flags = 0)
    {
        if (\is_bool($flags)) {
            @trigger_error('Passing a boolean flag to toggle exception handling is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);

            if ($flags) {
                $flags = Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE;
            } else {
                $flags = 0;
            }
        }

        if (\func_num_args() >= 3) {
            @trigger_error('Passing a boolean flag to toggle object support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::PARSE_OBJECT flag instead.', E_USER_DEPRECATED);

            if (func_get_arg(2)) {
                $flags |= Yaml::PARSE_OBJECT;
            }
        }

        if (\func_num_args() >= 4) {
            @trigger_error('Passing a boolean flag to toggle object for map support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::PARSE_OBJECT_FOR_MAP flag instead.', E_USER_DEPRECATED);

            if (func_get_arg(3)) {
                $flags |= Yaml::PARSE_OBJECT_FOR_MAP;
            }
        }

        if (Yaml::PARSE_KEYS_AS_STRINGS & $flags) {
            @trigger_error('Using the Yaml::PARSE_KEYS_AS_STRINGS flag is deprecated since Symfony 3.4 as it will be removed in 4.0. Quote your keys when they are evaluable instead.', E_USER_DEPRECATED);
        }

        if (false === preg_match('//u', $value)) {
            throw new ParseException('The YAML value does not appear to be valid UTF-8.', -1, null, $this->filename);
        }

        $this->refs = [];

        $mbEncoding = null;
        $e = null;
        $data = null;

        if (2 /* MB_OVERLOAD_STRING */ & (int) ini_get('mbstring.func_overload')) {
            $mbEncoding = mb_internal_encoding();
            mb_internal_encoding('UTF-8');
        }

        try {
            $data = $this->doParse($value, $flags);
        } catch (\Exception $e) {
        } catch (\Throwable $e) {
        }

        if (null !== $mbEncoding) {
            mb_internal_encoding($mbEncoding);
        }

        $this->lines = [];
        $this->currentLine = '';
        $this->refs = [];
        $this->skippedLineNumbers = [];
        $this->locallySkippedLineNumbers = [];

        if (null !== $e) {
            throw $e;
        }

        return $data;
    }

    private function doParse($value, $flags)
    {
        $this->currentLineNb = -1;
        $this->currentLine = '';
        $value = $this->cleanup($value);
        $this->lines = explode("\n", $value);
        $this->locallySkippedLineNumbers = [];

        if (null === $this->totalNumberOfLines) {
            $this->totalNumberOfLines = \count($this->lines);
        }

        if (!$this->moveToNextLine()) {
            return null;
        }

        $data = [];
        $context = null;
        $allowOverwrite = false;

        while ($this->isCurrentLineEmpty()) {
            if (!$this->moveToNextLine()) {
                return null;
            }
        }

        // Resolves the tag and returns if end of the document
        if (null !== ($tag = $this->getLineTag($this->currentLine, $flags, false)) && !$this->moveToNextLine()) {
            return new TaggedValue($tag, '');
        }

        do {
            if ($this->isCurrentLineEmpty()) {
                continue;
            }

            // tab?
            if ("\t" === $this->currentLine[0]) {
                throw new ParseException('A YAML file cannot contain tabs as indentation.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename);
            }

            Inline::initialize($flags, $this->getRealCurrentLineNb(), $this->filename);

            $isRef = $mergeNode = false;
            if (self::preg_match('#^\-((?P<leadspaces>\s+)(?P<value>.+))?$#u', rtrim($this->currentLine), $values)) {
                if ($context && 'mapping' == $context) {
                    throw new ParseException('You cannot define a sequence item when in a mapping', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename);
                }
                $context = 'sequence';

                if (isset($values['value']) && self::preg_match('#^&(?P<ref>[^ ]+) *(?P<value>.*)#u', $values['value'], $matches)) {
                    $isRef = $matches['ref'];
                    $this->refsBeingParsed[] = $isRef;
                    $values['value'] = $matches['value'];
                }

                if (isset($values['value'][1]) && '?' === $values['value'][0] && ' ' === $values['value'][1]) {
                    @trigger_error($this->getDeprecationMessage('Starting an unquoted string with a question mark followed by a space is deprecated since Symfony 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.'), E_USER_DEPRECATED);
                }

                // array
                if (!isset($values['value']) || '' == trim($values['value'], ' ') || 0 === strpos(ltrim($values['value'], ' '), '#')) {
                    $data[] = $this->parseBlock($this->getRealCurrentLineNb() + 1, $this->getNextEmbedBlock(null, true), $flags);
                } elseif (null !== $subTag = $this->getLineTag(ltrim($values['value'], ' '), $flags)) {
                    $data[] = new TaggedValue(
                        $subTag,
                        $this->parseBlock($this->getRealCurrentLineNb() + 1, $this->getNextEmbedBlock(null, true), $flags)
                    );
                } else {
                    if (isset($values['leadspaces'])
                        && self::preg_match('#^(?P<key>'.Inline::REGEX_QUOTED_STRING.'|[^ \'"\{\[].*?) *\:(\s+(?P<value>.+?))?\s*$#u', $this->trimTag($values['value']), $matches)
                    ) {
                        // this is a compact notation element, add to next block and parse
                        $block = $values['value'];
                        if ($this->isNextLineIndented()) {
                            $block .= "\n".$this->getNextEmbedBlock($this->getCurrentLineIndentation() + \strlen($values['leadspaces']) + 1);
                        }

                        $data[] = $this->parseBlock($this->getRealCurrentLineNb(), $block, $flags);
                    } else {
                        $data[] = $this->parseValue($values['value'], $flags, $context);
                    }
                }
                if ($isRef) {
                    $this->refs[$isRef] = end($data);
                    array_pop($this->refsBeingParsed);
                }
            } elseif (
                self::preg_match('#^(?P<key>(?:![^\s]++\s++)?(?:'.Inline::REGEX_QUOTED_STRING.'|(?:!?!php/const:)?[^ \'"\[\{!].*?)) *\:(\s++(?P<value>.+))?$#u', rtrim($this->currentLine), $values)
                && (false === strpos($values['key'], ' #') || \in_array($values['key'][0], ['"', "'"]))
            ) {
                if ($context && 'sequence' == $context) {
                    throw new ParseException('You cannot define a mapping item when in a sequence', $this->currentLineNb + 1, $this->currentLine, $this->filename);
                }
                $context = 'mapping';

                try {
                    $i = 0;
                    $evaluateKey = !(Yaml::PARSE_KEYS_AS_STRINGS & $flags);

                    // constants in key will be evaluated anyway
                    if (isset($values['key'][0]) && '!' === $values['key'][0] && Yaml::PARSE_CONSTANT & $flags) {
                        $evaluateKey = true;
                    }

                    $key = Inline::parseScalar($values['key'], 0, null, $i, $evaluateKey);
                } catch (ParseException $e) {
                    $e->setParsedLine($this->getRealCurrentLineNb() + 1);
                    $e->setSnippet($this->currentLine);

                    throw $e;
                }

                if (!\is_string($key) && !\is_int($key)) {
                    $keyType = is_numeric($key) ? 'numeric key' : 'non-string key';
                    @trigger_error($this->getDeprecationMessage(sprintf('Implicit casting of %s to string is deprecated since Symfony 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0. Quote your evaluable mapping keys instead.', $keyType)), E_USER_DEPRECATED);
                }

                // Convert float keys to strings, to avoid being converted to integers by PHP
                if (\is_float($key)) {
                    $key = (string) $key;
                }

                if ('<<' === $key && (!isset($values['value']) || !self::preg_match('#^&(?P<ref>[^ ]+)#u', $values['value'], $refMatches))) {
                    $mergeNode = true;
                    $allowOverwrite = true;
                    if (isset($values['value'][0]) && '*' === $values['value'][0]) {
                        $refName = substr(rtrim($values['value']), 1);
                        if (!\array_key_exists($refName, $this->refs)) {
                            if (false !== $pos = array_search($refName, $this->refsBeingParsed, true)) {
                                throw new ParseException(sprintf('Circular reference [%s, %s] detected for reference "%s".', implode(', ', \array_slice($this->refsBeingParsed, $pos)), $refName, $refName), $this->currentLineNb + 1, $this->currentLine, $this->filename);
                            }

                            throw new ParseException(sprintf('Reference "%s" does not exist.', $refName), $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename);
                        }

                        $refValue = $this->refs[$refName];

                        if (Yaml::PARSE_OBJECT_FOR_MAP & $flags && $refValue instanceof \stdClass) {
                            $refValue = (array) $refValue;
                        }

                        if (!\is_array($refValue)) {
                            throw new ParseException('YAML merge keys used with a scalar value instead of an array.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename);
                        }

                        $data += $refValue; // array union
                    } else {
                        if (isset($values['value']) && '' !== $values['value']) {
                            $value = $values['value'];
                        } else {
                            $value = $this->getNextEmbedBlock();
                        }
                        $parsed = $this->parseBlock($this->getRealCurrentLineNb() + 1, $value, $flags);

                        if (Yaml::PARSE_OBJECT_FOR_MAP & $flags && $parsed instanceof \stdClass) {
                            $parsed = (array) $parsed;
                        }

                        if (!\is_array($parsed)) {
                            throw new ParseException('YAML merge keys used with a scalar value instead of an array.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename);
                        }

                        if (isset($parsed[0])) {
                            // If the value associated with the merge key is a sequence, then this sequence is expected to contain mapping nodes
                            // and each of these nodes is merged in turn according to its order in the sequence. Keys in mapping nodes earlier
                            // in the sequence override keys specified in later mapping nodes.
                            foreach ($parsed as $parsedItem) {
                                if (Yaml::PARSE_OBJECT_FOR_MAP & $flags && $parsedItem instanceof \stdClass) {
                                    $parsedItem = (array) $parsedItem;
                                }

                                if (!\is_array($parsedItem)) {
                                    throw new ParseException('Merge items must be arrays.', $this->getRealCurrentLineNb() + 1, $parsedItem, $this->filename);
                                }

                                $data += $parsedItem; // array union
                            }
                        } else {
                            // If the value associated with the key is a single mapping node, each of its key/value pairs is inserted into the
                            // current mapping, unless the key already exists in it.
                            $data += $parsed; // array union
                        }
                    }
                } elseif ('<<' !== $key && isset($values['value']) && self::preg_match('#^&(?P<ref>[^ ]++) *+(?P<value>.*)#u', $values['value'], $matches)) {
                    $isRef = $matches['ref'];
                    $this->refsBeingParsed[] = $isRef;
                    $values['value'] = $matches['value'];
                }

                $subTag = null;
                if ($mergeNode) {
                    // Merge keys
                } elseif (!isset($values['value']) || '' === $values['value'] || 0 === strpos($values['value'], '#') || (null !== $subTag = $this->getLineTag($values['value'], $flags)) || '<<' === $key) {
                    // hash
                    // if next line is less indented or equal, then it means that the current value is null
                    if (!$this->isNextLineIndented() && !$this->isNextLineUnIndentedCollection()) {
                        // Spec: Keys MUST be unique; first one wins.
                        // But overwriting is allowed when a merge node is used in current block.
                        if ($allowOverwrite || !isset($data[$key])) {
                            if (null !== $subTag) {
                                $data[$key] = new TaggedValue($subTag, '');
                            } else {
                                $data[$key] = null;
                            }
                        } else {
                            @trigger_error($this->getDeprecationMessage(sprintf('Duplicate key "%s" detected whilst parsing YAML. Silent handling of duplicate mapping keys in YAML is deprecated since Symfony 3.2 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.', $key)), E_USER_DEPRECATED);
                        }
                    } else {
                        $value = $this->parseBlock($this->getRealCurrentLineNb() + 1, $this->getNextEmbedBlock(), $flags);
                        if ('<<' === $key) {
                            $this->refs[$refMatches['ref']] = $value;

                            if (Yaml::PARSE_OBJECT_FOR_MAP & $flags && $value instanceof \stdClass) {
                                $value = (array) $value;
                            }

                            $data += $value;
                        } elseif ($allowOverwrite || !isset($data[$key])) {
                            // Spec: Keys MUST be unique; first one wins.
                            // But overwriting is allowed when a merge node is used in current block.
                            if (null !== $subTag) {
                                $data[$key] = new TaggedValue($subTag, $value);
                            } else {
                                $data[$key] = $value;
                            }
                        } else {
                            @trigger_error($this->getDeprecationMessage(sprintf('Duplicate key "%s" detected whilst parsing YAML. Silent handling of duplicate mapping keys in YAML is deprecated since Symfony 3.2 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.', $key)), E_USER_DEPRECATED);
                        }
                    }
                } else {
                    $value = $this->parseValue(rtrim($values['value']), $flags, $context);
                    // Spec: Keys MUST be unique; first one wins.
                    // But overwriting is allowed when a merge node is used in current block.
                    if ($allowOverwrite || !isset($data[$key])) {
                        $data[$key] = $value;
                    } else {
                        @trigger_error($this->getDeprecationMessage(sprintf('Duplicate key "%s" detected whilst parsing YAML. Silent handling of duplicate mapping keys in YAML is deprecated since Symfony 3.2 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.', $key)), E_USER_DEPRECATED);
                    }
                }
                if ($isRef) {
                    $this->refs[$isRef] = $data[$key];
                    array_pop($this->refsBeingParsed);
                }
            } else {
                // multiple documents are not supported
                if ('---' === $this->currentLine) {
                    throw new ParseException('Multiple documents are not supported.', $this->currentLineNb + 1, $this->currentLine, $this->filename);
                }

                if ($deprecatedUsage = (isset($this->currentLine[1]) && '?' === $this->currentLine[0] && ' ' === $this->currentLine[1])) {
                    @trigger_error($this->getDeprecationMessage('Starting an unquoted string with a question mark followed by a space is deprecated since Symfony 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.'), E_USER_DEPRECATED);
                }

                // 1-liner optionally followed by newline(s)
                if (\is_string($value) && $this->lines[0] === trim($value)) {
                    try {
                        $value = Inline::parse($this->lines[0], $flags, $this->refs);
                    } catch (ParseException $e) {
                        $e->setParsedLine($this->getRealCurrentLineNb() + 1);
                        $e->setSnippet($this->currentLine);

                        throw $e;
                    }

                    return $value;
                }

                // try to parse the value as a multi-line string as a last resort
                if (0 === $this->currentLineNb) {
                    $previousLineWasNewline = false;
                    $previousLineWasTerminatedWithBackslash = false;
                    $value = '';

                    foreach ($this->lines as $line) {
                        if ('' !== ltrim($line) && '#' === ltrim($line)[0]) {
                            continue;
                        }
                        // If the indentation is not consistent at offset 0, it is to be considered as a ParseError
                        if (0 === $this->offset && !$deprecatedUsage && isset($line[0]) && ' ' === $line[0]) {
                            throw new ParseException('Unable to parse.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename);
                        }
                        if ('' === trim($line)) {
                            $value .= "\n";
                        } elseif (!$previousLineWasNewline && !$previousLineWasTerminatedWithBackslash) {
                            $value .= ' ';
                        }

                        if ('' !== trim($line) && '\\' === substr($line, -1)) {
                            $value .= ltrim(substr($line, 0, -1));
                        } elseif ('' !== trim($line)) {
                            $value .= trim($line);
                        }

                        if ('' === trim($line)) {
                            $previousLineWasNewline = true;
                            $previousLineWasTerminatedWithBackslash = false;
                        } elseif ('\\' === substr($line, -1)) {
                            $previousLineWasNewline = false;
                            $previousLineWasTerminatedWithBackslash = true;
                        } else {
                            $previousLineWasNewline = false;
                            $previousLineWasTerminatedWithBackslash = false;
                        }
                    }

                    try {
                        return Inline::parse(trim($value));
                    } catch (ParseException $e) {
                        // fall-through to the ParseException thrown below
                    }
                }

                throw new ParseException('Unable to parse.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename);
            }
        } while ($this->moveToNextLine());

        if (null !== $tag) {
            $data = new TaggedValue($tag, $data);
        }

        if (Yaml::PARSE_OBJECT_FOR_MAP & $flags && !\is_object($data) && 'mapping' === $context) {
            $object = new \stdClass();

            foreach ($data as $key => $value) {
                $object->$key = $value;
            }

            $data = $object;
        }

        return empty($data) ? null : $data;
    }

    private function parseBlock($offset, $yaml, $flags)
    {
        $skippedLineNumbers = $this->skippedLineNumbers;

        foreach ($this->locallySkippedLineNumbers as $lineNumber) {
            if ($lineNumber < $offset) {
                continue;
            }

            $skippedLineNumbers[] = $lineNumber;
        }

        $parser = new self();
        $parser->offset = $offset;
        $parser->totalNumberOfLines = $this->totalNumberOfLines;
        $parser->skippedLineNumbers = $skippedLineNumbers;
        $parser->refs = &$this->refs;
        $parser->refsBeingParsed = $this->refsBeingParsed;

        return $parser->doParse($yaml, $flags);
    }

    /**
     * Returns the current line number (takes the offset into account).
     *
     * @internal
     *
     * @return int The current line number
     */
    public function getRealCurrentLineNb()
    {
        $realCurrentLineNumber = $this->currentLineNb + $this->offset;

        foreach ($this->skippedLineNumbers as $skippedLineNumber) {
            if ($skippedLineNumber > $realCurrentLineNumber) {
                break;
            }

            ++$realCurrentLineNumber;
        }

        return $realCurrentLineNumber;
    }

    /**
     * Returns the current line indentation.
     *
     * @return int The current line indentation
     */
    private function getCurrentLineIndentation()
    {
        return \strlen($this->currentLine) - \strlen(ltrim($this->currentLine, ' '));
    }

    /**
     * Returns the next embed block of YAML.
     *
     * @param int  $indentation The indent level at which the block is to be read, or null for default
     * @param bool $inSequence  True if the enclosing data structure is a sequence
     *
     * @return string A YAML string
     *
     * @throws ParseException When indentation problem are detected
     */
    private function getNextEmbedBlock($indentation = null, $inSequence = false)
    {
        $oldLineIndentation = $this->getCurrentLineIndentation();

        if (!$this->moveToNextLine()) {
            return '';
        }

        if (null === $indentation) {
            $newIndent = null;
            $movements = 0;

            do {
                $EOF = false;

                // empty and comment-like lines do not influence the indentation depth
                if ($this->isCurrentLineEmpty() || $this->isCurrentLineComment()) {
                    $EOF = !$this->moveToNextLine();

                    if (!$EOF) {
                        ++$movements;
                    }
                } else {
                    $newIndent = $this->getCurrentLineIndentation();
                }
            } while (!$EOF && null === $newIndent);

            for ($i = 0; $i < $movements; ++$i) {
                $this->moveToPreviousLine();
            }

            $unindentedEmbedBlock = $this->isStringUnIndentedCollectionItem();

            if (!$this->isCurrentLineEmpty() && 0 === $newIndent && !$unindentedEmbedBlock) {
                throw new ParseException('Indentation problem.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename);
            }
        } else {
            $newIndent = $indentation;
        }

        $data = [];
        if ($this->getCurrentLineIndentation() >= $newIndent) {
            $data[] = substr($this->currentLine, $newIndent);
        } elseif ($this->isCurrentLineEmpty() || $this->isCurrentLineComment()) {
            $data[] = $this->currentLine;
        } else {
            $this->moveToPreviousLine();

            return '';
        }

        if ($inSequence && $oldLineIndentation === $newIndent && isset($data[0][0]) && '-' === $data[0][0]) {
            // the previous line contained a dash but no item content, this line is a sequence item with the same indentation
            // and therefore no nested list or mapping
            $this->moveToPreviousLine();

            return '';
        }

        $isItUnindentedCollection = $this->isStringUnIndentedCollectionItem();

        while ($this->moveToNextLine()) {
            $indent = $this->getCurrentLineIndentation();

            if ($isItUnindentedCollection && !$this->isCurrentLineEmpty() && !$this->isStringUnIndentedCollectionItem() && $newIndent === $indent) {
                $this->moveToPreviousLine();
                break;
            }

            if ($this->isCurrentLineBlank()) {
                $data[] = substr($this->currentLine, $newIndent);
                continue;
            }

            if ($indent >= $newIndent) {
                $data[] = substr($this->currentLine, $newIndent);
            } elseif ($this->isCurrentLineComment()) {
                $data[] = $this->currentLine;
            } elseif (0 == $indent) {
                $this->moveToPreviousLine();

                break;
            } else {
                throw new ParseException('Indentation problem.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename);
            }
        }

        return implode("\n", $data);
    }

    /**
     * Moves the parser to the next line.
     *
     * @return bool
     */
    private function moveToNextLine()
    {
        if ($this->currentLineNb >= \count($this->lines) - 1) {
            return false;
        }

        $this->currentLine = $this->lines[++$this->currentLineNb];

        return true;
    }

    /**
     * Moves the parser to the previous line.
     *
     * @return bool
     */
    private function moveToPreviousLine()
    {
        if ($this->currentLineNb < 1) {
            return false;
        }

        $this->currentLine = $this->lines[--$this->currentLineNb];

        return true;
    }

    /**
     * Parses a YAML value.
     *
     * @param string $value   A YAML value
     * @param int    $flags   A bit field of PARSE_* constants to customize the YAML parser behavior
     * @param string $context The parser context (either sequence or mapping)
     *
     * @return mixed A PHP value
     *
     * @throws ParseException When reference does not exist
     */
    private function parseValue($value, $flags, $context)
    {
        if (0 === strpos($value, '*')) {
            if (false !== $pos = strpos($value, '#')) {
                $value = substr($value, 1, $pos - 2);
            } else {
                $value = substr($value, 1);
            }

            if (!\array_key_exists($value, $this->refs)) {
                if (false !== $pos = array_search($value, $this->refsBeingParsed, true)) {
                    throw new ParseException(sprintf('Circular reference [%s, %s] detected for reference "%s".', implode(', ', \array_slice($this->refsBeingParsed, $pos)), $value, $value), $this->currentLineNb + 1, $this->currentLine, $this->filename);
                }

                throw new ParseException(sprintf('Reference "%s" does not exist.', $value), $this->currentLineNb + 1, $this->currentLine, $this->filename);
            }

            return $this->refs[$value];
        }

        if (self::preg_match('/^(?:'.self::TAG_PATTERN.' +)?'.self::BLOCK_SCALAR_HEADER_PATTERN.'$/', $value, $matches)) {
            $modifiers = isset($matches['modifiers']) ? $matches['modifiers'] : '';

            $data = $this->parseBlockScalar($matches['separator'], preg_replace('#\d+#', '', $modifiers), (int) abs((int) $modifiers));

            if ('' !== $matches['tag']) {
                if ('!!binary' === $matches['tag']) {
                    return Inline::evaluateBinaryScalar($data);
                } elseif ('tagged' === $matches['tag']) {
                    return new TaggedValue(substr($matches['tag'], 1), $data);
                } elseif ('!' !== $matches['tag']) {
                    @trigger_error($this->getDeprecationMessage(sprintf('Using the custom tag "%s" for the value "%s" is deprecated since Symfony 3.3. It will be replaced by an instance of %s in 4.0.', $matches['tag'], $data, TaggedValue::class)), E_USER_DEPRECATED);
                }
            }

            return $data;
        }

        try {
            $quotation = '' !== $value && ('"' === $value[0] || "'" === $value[0]) ? $value[0] : null;

            // do not take following lines into account when the current line is a quoted single line value
            if (null !== $quotation && self::preg_match('/^'.$quotation.'.*'.$quotation.'(\s*#.*)?$/', $value)) {
                return Inline::parse($value, $flags, $this->refs);
            }

            $lines = [];

            while ($this->moveToNextLine()) {
                // unquoted strings end before the first unindented line
                if (null === $quotation && 0 === $this->getCurrentLineIndentation()) {
                    $this->moveToPreviousLine();

                    break;
                }

                $lines[] = trim($this->currentLine);

                // quoted string values end with a line that is terminated with the quotation character
                if ('' !== $this->currentLine && substr($this->currentLine, -1) === $quotation) {
                    break;
                }
            }

            for ($i = 0, $linesCount = \count($lines), $previousLineBlank = false; $i < $linesCount; ++$i) {
                if ('' === $lines[$i]) {
                    $value .= "\n";
                    $previousLineBlank = true;
                } elseif ($previousLineBlank) {
                    $value .= $lines[$i];
                    $previousLineBlank = false;
                } else {
                    $value .= ' '.$lines[$i];
                    $previousLineBlank = false;
                }
            }

            Inline::$parsedLineNumber = $this->getRealCurrentLineNb();

            $parsedValue = Inline::parse($value, $flags, $this->refs);

            if ('mapping' === $context && \is_string($parsedValue) && '"' !== $value[0] && "'" !== $value[0] && '[' !== $value[0] && '{' !== $value[0] && '!' !== $value[0] && false !== strpos($parsedValue, ': ')) {
                throw new ParseException('A colon cannot be used in an unquoted mapping value.', $this->getRealCurrentLineNb() + 1, $value, $this->filename);
            }

            return $parsedValue;
        } catch (ParseException $e) {
            $e->setParsedLine($this->getRealCurrentLineNb() + 1);
            $e->setSnippet($this->currentLine);

            throw $e;
        }
    }

    /**
     * Parses a block scalar.
     *
     * @param string $style       The style indicator that was used to begin this block scalar (| or >)
     * @param string $chomping    The chomping indicator that was used to begin this block scalar (+ or -)
     * @param int    $indentation The indentation indicator that was used to begin this block scalar
     *
     * @return string The text value
     */
    private function parseBlockScalar($style, $chomping = '', $indentation = 0)
    {
        $notEOF = $this->moveToNextLine();
        if (!$notEOF) {
            return '';
        }

        $isCurrentLineBlank = $this->isCurrentLineBlank();
        $blockLines = [];

        // leading blank lines are consumed before determining indentation
        while ($notEOF && $isCurrentLineBlank) {
            // newline only if not EOF
            if ($notEOF = $this->moveToNextLine()) {
                $blockLines[] = '';
                $isCurrentLineBlank = $this->isCurrentLineBlank();
            }
        }

        // determine indentation if not specified
        if (0 === $indentation) {
            if (self::preg_match('/^ +/', $this->currentLine, $matches)) {
                $indentation = \strlen($matches[0]);
            }
        }

        if ($indentation > 0) {
            $pattern = sprintf('/^ {%d}(.*)$/', $indentation);

            while (
                $notEOF && (
                    $isCurrentLineBlank ||
                    self::preg_match($pattern, $this->currentLine, $matches)
                )
            ) {
                if ($isCurrentLineBlank && \strlen($this->currentLine) > $indentation) {
                    $blockLines[] = substr($this->currentLine, $indentation);
                } elseif ($isCurrentLineBlank) {
                    $blockLines[] = '';
                } else {
                    $blockLines[] = $matches[1];
                }

                // newline only if not EOF
                if ($notEOF = $this->moveToNextLine()) {
                    $isCurrentLineBlank = $this->isCurrentLineBlank();
                }
            }
        } elseif ($notEOF) {
            $blockLines[] = '';
        }

        if ($notEOF) {
            $blockLines[] = '';
            $this->moveToPreviousLine();
        } elseif (!$notEOF && !$this->isCurrentLineLastLineInDocument()) {
            $blockLines[] = '';
        }

        // folded style
        if ('>' === $style) {
            $text = '';
            $previousLineIndented = false;
            $previousLineBlank = false;

            for ($i = 0, $blockLinesCount = \count($blockLines); $i < $blockLinesCount; ++$i) {
                if ('' === $blockLines[$i]) {
                    $text .= "\n";
                    $previousLineIndented = false;
                    $previousLineBlank = true;
                } elseif (' ' === $blockLines[$i][0]) {
                    $text .= "\n".$blockLines[$i];
                    $previousLineIndented = true;
                    $previousLineBlank = false;
                } elseif ($previousLineIndented) {
                    $text .= "\n".$blockLines[$i];
                    $previousLineIndented = false;
                    $previousLineBlank = false;
                } elseif ($previousLineBlank || 0 === $i) {
                    $text .= $blockLines[$i];
                    $previousLineIndented = false;
                    $previousLineBlank = false;
                } else {
                    $text .= ' '.$blockLines[$i];
                    $previousLineIndented = false;
                    $previousLineBlank = false;
                }
            }
        } else {
            $text = implode("\n", $blockLines);
        }

        // deal with trailing newlines
        if ('' === $chomping) {
            $text = preg_replace('/\n+$/', "\n", $text);
        } elseif ('-' === $chomping) {
            $text = preg_replace('/\n+$/', '', $text);
        }

        return $text;
    }

    /**
     * Returns true if the next line is indented.
     *
     * @return bool Returns true if the next line is indented, false otherwise
     */
    private function isNextLineIndented()
    {
        $currentIndentation = $this->getCurrentLineIndentation();
        $movements = 0;

        do {
            $EOF = !$this->moveToNextLine();

            if (!$EOF) {
                ++$movements;
            }
        } while (!$EOF && ($this->isCurrentLineEmpty() || $this->isCurrentLineComment()));

        if ($EOF) {
            return false;
        }

        $ret = $this->getCurrentLineIndentation() > $currentIndentation;

        for ($i = 0; $i < $movements; ++$i) {
            $this->moveToPreviousLine();
        }

        return $ret;
    }

    /**
     * Returns true if the current line is blank or if it is a comment line.
     *
     * @return bool Returns true if the current line is empty or if it is a comment line, false otherwise
     */
    private function isCurrentLineEmpty()
    {
        return $this->isCurrentLineBlank() || $this->isCurrentLineComment();
    }

    /**
     * Returns true if the current line is blank.
     *
     * @return bool Returns true if the current line is blank, false otherwise
     */
    private function isCurrentLineBlank()
    {
        return '' == trim($this->currentLine, ' ');
    }

    /**
     * Returns true if the current line is a comment line.
     *
     * @return bool Returns true if the current line is a comment line, false otherwise
     */
    private function isCurrentLineComment()
    {
        //checking explicitly the first char of the trim is faster than loops or strpos
        $ltrimmedLine = ltrim($this->currentLine, ' ');

        return '' !== $ltrimmedLine && '#' === $ltrimmedLine[0];
    }

    private function isCurrentLineLastLineInDocument()
    {
        return ($this->offset + $this->currentLineNb) >= ($this->totalNumberOfLines - 1);
    }

    /**
     * Cleanups a YAML string to be parsed.
     *
     * @param string $value The input YAML string
     *
     * @return string A cleaned up YAML string
     */
    private function cleanup($value)
    {
        $value = str_replace(["\r\n", "\r"], "\n", $value);

        // strip YAML header
        $count = 0;
        $value = preg_replace('#^\%YAML[: ][\d\.]+.*\n#u', '', $value, -1, $count);
        $this->offset += $count;

        // remove leading comments
        $trimmedValue = preg_replace('#^(\#.*?\n)+#s', '', $value, -1, $count);
        if (1 === $count) {
            // items have been removed, update the offset
            $this->offset += substr_count($value, "\n") - substr_count($trimmedValue, "\n");
            $value = $trimmedValue;
        }

        // remove start of the document marker (---)
        $trimmedValue = preg_replace('#^\-\-\-.*?\n#s', '', $value, -1, $count);
        if (1 === $count) {
            // items have been removed, update the offset
            $this->offset += substr_count($value, "\n") - substr_count($trimmedValue, "\n");
            $value = $trimmedValue;

            // remove end of the document marker (...)
            $value = preg_replace('#\.\.\.\s*$#', '', $value);
        }

        return $value;
    }

    /**
     * Returns true if the next line starts unindented collection.
     *
     * @return bool Returns true if the next line starts unindented collection, false otherwise
     */
    private function isNextLineUnIndentedCollection()
    {
        $currentIndentation = $this->getCurrentLineIndentation();
        $movements = 0;

        do {
            $EOF = !$this->moveToNextLine();

            if (!$EOF) {
                ++$movements;
            }
        } while (!$EOF && ($this->isCurrentLineEmpty() || $this->isCurrentLineComment()));

        if ($EOF) {
            return false;
        }

        $ret = $this->getCurrentLineIndentation() === $currentIndentation && $this->isStringUnIndentedCollectionItem();

        for ($i = 0; $i < $movements; ++$i) {
            $this->moveToPreviousLine();
        }

        return $ret;
    }

    /**
     * Returns true if the string is un-indented collection item.
     *
     * @return bool Returns true if the string is un-indented collection item, false otherwise
     */
    private function isStringUnIndentedCollectionItem()
    {
        return '-' === rtrim($this->currentLine) || 0 === strpos($this->currentLine, '- ');
    }

    /**
     * A local wrapper for `preg_match` which will throw a ParseException if there
     * is an internal error in the PCRE engine.
     *
     * This avoids us needing to check for "false" every time PCRE is used
     * in the YAML engine
     *
     * @throws ParseException on a PCRE internal error
     *
     * @see preg_last_error()
     *
     * @internal
     */
    public static function preg_match($pattern, $subject, &$matches = null, $flags = 0, $offset = 0)
    {
        if (false === $ret = preg_match($pattern, $subject, $matches, $flags, $offset)) {
            switch (preg_last_error()) {
                case PREG_INTERNAL_ERROR:
                    $error = 'Internal PCRE error.';
                    break;
                case PREG_BACKTRACK_LIMIT_ERROR:
                    $error = 'pcre.backtrack_limit reached.';
                    break;
                case PREG_RECURSION_LIMIT_ERROR:
                    $error = 'pcre.recursion_limit reached.';
                    break;
                case PREG_BAD_UTF8_ERROR:
                    $error = 'Malformed UTF-8 data.';
                    break;
                case PREG_BAD_UTF8_OFFSET_ERROR:
                    $error = 'Offset doesn\'t correspond to the begin of a valid UTF-8 code point.';
                    break;
                default:
                    $error = 'Error.';
            }

            throw new ParseException($error);
        }

        return $ret;
    }

    /**
     * Trim the tag on top of the value.
     *
     * Prevent values such as `!foo {quz: bar}` to be considered as
     * a mapping block.
     */
    private function trimTag($value)
    {
        if ('!' === $value[0]) {
            return ltrim(substr($value, 1, strcspn($value, " \r\n", 1)), ' ');
        }

        return $value;
    }

    /**
     * @return string|null
     */
    private function getLineTag($value, $flags, $nextLineCheck = true)
    {
        if ('' === $value || '!' !== $value[0] || 1 !== self::preg_match('/^'.self::TAG_PATTERN.' *( +#.*)?$/', $value, $matches)) {
            return null;
        }

        if ($nextLineCheck && !$this->isNextLineIndented()) {
            return null;
        }

        $tag = substr($matches['tag'], 1);

        // Built-in tags
        if ($tag && '!' === $tag[0]) {
            throw new ParseException(sprintf('The built-in tag "!%s" is not implemented.', $tag), $this->getRealCurrentLineNb() + 1, $value, $this->filename);
        }

        if (Yaml::PARSE_CUSTOM_TAGS & $flags) {
            return $tag;
        }

        throw new ParseException(sprintf('Tags support is not enabled. You must use the flag `Yaml::PARSE_CUSTOM_TAGS` to use "%s".', $matches['tag']), $this->getRealCurrentLineNb() + 1, $value, $this->filename);
    }

    private function getDeprecationMessage($message)
    {
        $message = rtrim($message, '.');

        if (null !== $this->filename) {
            $message .= ' in '.$this->filename;
        }

        $message .= ' on line '.($this->getRealCurrentLineNb() + 1);

        return $message.'.';
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Yaml;

/**
 * Escaper encapsulates escaping rules for single and double-quoted
 * YAML strings.
 *
 * @author Matthew Lewinski <matthew@lewinski.org>
 *
 * @internal
 */
class Escaper
{
    // Characters that would cause a dumped string to require double quoting.
    const REGEX_CHARACTER_TO_ESCAPE = "[\\x00-\\x1f]|\xc2\x85|\xc2\xa0|\xe2\x80\xa8|\xe2\x80\xa9";

    // Mapping arrays for escaping a double quoted string. The backslash is
    // first to ensure proper escaping because str_replace operates iteratively
    // on the input arrays. This ordering of the characters avoids the use of strtr,
    // which performs more slowly.
    private static $escapees = ['\\', '\\\\', '\\"', '"',
                                     "\x00",  "\x01",  "\x02",  "\x03",  "\x04",  "\x05",  "\x06",  "\x07",
                                     "\x08",  "\x09",  "\x0a",  "\x0b",  "\x0c",  "\x0d",  "\x0e",  "\x0f",
                                     "\x10",  "\x11",  "\x12",  "\x13",  "\x14",  "\x15",  "\x16",  "\x17",
                                     "\x18",  "\x19",  "\x1a",  "\x1b",  "\x1c",  "\x1d",  "\x1e",  "\x1f",
                                     "\xc2\x85", "\xc2\xa0", "\xe2\x80\xa8", "\xe2\x80\xa9",
                               ];
    private static $escaped = ['\\\\', '\\"', '\\\\', '\\"',
                                     '\\0',   '\\x01', '\\x02', '\\x03', '\\x04', '\\x05', '\\x06', '\\a',
                                     '\\b',   '\\t',   '\\n',   '\\v',   '\\f',   '\\r',   '\\x0e', '\\x0f',
                                     '\\x10', '\\x11', '\\x12', '\\x13', '\\x14', '\\x15', '\\x16', '\\x17',
                                     '\\x18', '\\x19', '\\x1a', '\\e',   '\\x1c', '\\x1d', '\\x1e', '\\x1f',
                                     '\\N', '\\_', '\\L', '\\P',
                              ];

    /**
     * Determines if a PHP value would require double quoting in YAML.
     *
     * @param string $value A PHP value
     *
     * @return bool True if the value would require double quotes
     */
    public static function requiresDoubleQuoting($value)
    {
        return 0 < preg_match('/'.self::REGEX_CHARACTER_TO_ESCAPE.'/u', $value);
    }

    /**
     * Escapes and surrounds a PHP value with double quotes.
     *
     * @param string $value A PHP value
     *
     * @return string The quoted, escaped string
     */
    public static function escapeWithDoubleQuotes($value)
    {
        return sprintf('"%s"', str_replace(self::$escapees, self::$escaped, $value));
    }

    /**
     * Determines if a PHP value would require single quoting in YAML.
     *
     * @param string $value A PHP value
     *
     * @return bool True if the value would require single quotes
     */
    public static function requiresSingleQuoting($value)
    {
        // Determines if a PHP value is entirely composed of a value that would
        // require single quoting in YAML.
        if (\in_array(strtolower($value), ['null', '~', 'true', 'false', 'y', 'n', 'yes', 'no', 'on', 'off'])) {
            return true;
        }

        // Determines if the PHP value contains any single characters that would
        // cause it to require single quoting in YAML.
        return 0 < preg_match('/[ \s \' " \: \{ \} \[ \] , & \* \# \?] | \A[ \- ? | < > = ! % @ ` ]/x', $value);
    }

    /**
     * Escapes and surrounds a PHP value with single quotes.
     *
     * @param string $value A PHP value
     *
     * @return string The quoted, escaped string
     */
    public static function escapeWithSingleQuotes($value)
    {
        return sprintf("'%s'", str_replace('\'', '\'\'', $value));
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Yaml;

use Symfony\Component\Yaml\Exception\ParseException;

/**
 * Unescaper encapsulates unescaping rules for single and double-quoted
 * YAML strings.
 *
 * @author Matthew Lewinski <matthew@lewinski.org>
 *
 * @internal
 */
class Unescaper
{
    /**
     * Regex fragment that matches an escaped character in a double quoted string.
     */
    const REGEX_ESCAPED_CHARACTER = '\\\\(x[0-9a-fA-F]{2}|u[0-9a-fA-F]{4}|U[0-9a-fA-F]{8}|.)';

    /**
     * Unescapes a single quoted string.
     *
     * @param string $value A single quoted string
     *
     * @return string The unescaped string
     */
    public function unescapeSingleQuotedString($value)
    {
        return str_replace('\'\'', '\'', $value);
    }

    /**
     * Unescapes a double quoted string.
     *
     * @param string $value A double quoted string
     *
     * @return string The unescaped string
     */
    public function unescapeDoubleQuotedString($value)
    {
        $callback = function ($match) {
            return $this->unescapeCharacter($match[0]);
        };

        // evaluate the string
        return preg_replace_callback('/'.self::REGEX_ESCAPED_CHARACTER.'/u', $callback, $value);
    }

    /**
     * Unescapes a character that was found in a double-quoted string.
     *
     * @param string $value An escaped character
     *
     * @return string The unescaped character
     */
    private function unescapeCharacter($value)
    {
        switch ($value[1]) {
            case '0':
                return "\x0";
            case 'a':
                return "\x7";
            case 'b':
                return "\x8";
            case 't':
                return "\t";
            case "\t":
                return "\t";
            case 'n':
                return "\n";
            case 'v':
                return "\xB";
            case 'f':
                return "\xC";
            case 'r':
                return "\r";
            case 'e':
                return "\x1B";
            case ' ':
                return ' ';
            case '"':
                return '"';
            case '/':
                return '/';
            case '\\':
                return '\\';
            case 'N':
                // U+0085 NEXT LINE
                return "\xC2\x85";
            case '_':
                // U+00A0 NO-BREAK SPACE
                return "\xC2\xA0";
            case 'L':
                // U+2028 LINE SEPARATOR
                return "\xE2\x80\xA8";
            case 'P':
                // U+2029 PARAGRAPH SEPARATOR
                return "\xE2\x80\xA9";
            case 'x':
                return self::utf8chr(hexdec(substr($value, 2, 2)));
            case 'u':
                return self::utf8chr(hexdec(substr($value, 2, 4)));
            case 'U':
                return self::utf8chr(hexdec(substr($value, 2, 8)));
            default:
                throw new ParseException(sprintf('Found unknown escape character "%s".', $value));
        }
    }

    /**
     * Get the UTF-8 character for the given code point.
     *
     * @param int $c The unicode code point
     *
     * @return string The corresponding UTF-8 character
     */
    private static function utf8chr($c)
    {
        if (0x80 > $c %= 0x200000) {
            return \chr($c);
        }
        if (0x800 > $c) {
            return \chr(0xC0 | $c >> 6).\chr(0x80 | $c & 0x3F);
        }
        if (0x10000 > $c) {
            return \chr(0xE0 | $c >> 12).\chr(0x80 | $c >> 6 & 0x3F).\chr(0x80 | $c & 0x3F);
        }

        return \chr(0xF0 | $c >> 18).\chr(0x80 | $c >> 12 & 0x3F).\chr(0x80 | $c >> 6 & 0x3F).\chr(0x80 | $c & 0x3F);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Yaml;

use Symfony\Component\Yaml\Tag\TaggedValue;

/**
 * Dumper dumps PHP variables to YAML strings.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @final since version 3.4
 */
class Dumper
{
    /**
     * The amount of spaces to use for indentation of nested nodes.
     *
     * @var int
     */
    protected $indentation;

    /**
     * @param int $indentation
     */
    public function __construct($indentation = 4)
    {
        if ($indentation < 1) {
            throw new \InvalidArgumentException('The indentation must be greater than zero.');
        }

        $this->indentation = $indentation;
    }

    /**
     * Sets the indentation.
     *
     * @param int $num The amount of spaces to use for indentation of nested nodes
     *
     * @deprecated since version 3.1, to be removed in 4.0. Pass the indentation to the constructor instead.
     */
    public function setIndentation($num)
    {
        @trigger_error('The '.__METHOD__.' method is deprecated since Symfony 3.1 and will be removed in 4.0. Pass the indentation to the constructor instead.', E_USER_DEPRECATED);

        $this->indentation = (int) $num;
    }

    /**
     * Dumps a PHP value to YAML.
     *
     * @param mixed $input  The PHP value
     * @param int   $inline The level where you switch to inline YAML
     * @param int   $indent The level of indentation (used internally)
     * @param int   $flags  A bit field of Yaml::DUMP_* constants to customize the dumped YAML string
     *
     * @return string The YAML representation of the PHP value
     */
    public function dump($input, $inline = 0, $indent = 0, $flags = 0)
    {
        if (\is_bool($flags)) {
            @trigger_error('Passing a boolean flag to toggle exception handling is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);

            if ($flags) {
                $flags = Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE;
            } else {
                $flags = 0;
            }
        }

        if (\func_num_args() >= 5) {
            @trigger_error('Passing a boolean flag to toggle object support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::DUMP_OBJECT flag instead.', E_USER_DEPRECATED);

            if (func_get_arg(4)) {
                $flags |= Yaml::DUMP_OBJECT;
            }
        }

        $output = '';
        $prefix = $indent ? str_repeat(' ', $indent) : '';
        $dumpObjectAsInlineMap = true;

        if (Yaml::DUMP_OBJECT_AS_MAP & $flags && ($input instanceof \ArrayObject || $input instanceof \stdClass)) {
            $dumpObjectAsInlineMap = empty((array) $input);
        }

        if ($inline <= 0 || (!\is_array($input) && !$input instanceof TaggedValue && $dumpObjectAsInlineMap) || empty($input)) {
            $output .= $prefix.Inline::dump($input, $flags);
        } else {
            $dumpAsMap = Inline::isHash($input);

            foreach ($input as $key => $value) {
                if ($inline >= 1 && Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK & $flags && \is_string($value) && false !== strpos($value, "\n") && false === strpos($value, "\r\n")) {
                    // If the first line starts with a space character, the spec requires a blockIndicationIndicator
                    // http://www.yaml.org/spec/1.2/spec.html#id2793979
                    $blockIndentationIndicator = (' ' === substr($value, 0, 1)) ? (string) $this->indentation : '';
                    $output .= sprintf("%s%s%s |%s\n", $prefix, $dumpAsMap ? Inline::dump($key, $flags).':' : '-', '', $blockIndentationIndicator);

                    foreach (preg_split('/\n|\r\n/', $value) as $row) {
                        $output .= sprintf("%s%s%s\n", $prefix, str_repeat(' ', $this->indentation), $row);
                    }

                    continue;
                }

                if ($value instanceof TaggedValue) {
                    $output .= sprintf('%s%s !%s', $prefix, $dumpAsMap ? Inline::dump($key, $flags).':' : '-', $value->getTag());

                    if ($inline - 1 <= 0 || null === $value->getValue() || is_scalar($value->getValue())) {
                        $output .= ' '.$this->dump($value->getValue(), $inline - 1, 0, $flags)."\n";
                    } else {
                        $output .= "\n";
                        $output .= $this->dump($value->getValue(), $inline - 1, $dumpAsMap ? $indent + $this->indentation : $indent + 2, $flags);
                    }

                    continue;
                }

                $dumpObjectAsInlineMap = true;

                if (Yaml::DUMP_OBJECT_AS_MAP & $flags && ($value instanceof \ArrayObject || $value instanceof \stdClass)) {
                    $dumpObjectAsInlineMap = empty((array) $value);
                }

                $willBeInlined = $inline - 1 <= 0 || !\is_array($value) && $dumpObjectAsInlineMap || empty($value);

                $output .= sprintf('%s%s%s%s',
                    $prefix,
                    $dumpAsMap ? Inline::dump($key, $flags).':' : '-',
                    $willBeInlined ? ' ' : "\n",
                    $this->dump($value, $inline - 1, $willBeInlined ? 0 : $indent + $this->indentation, $flags)
                ).($willBeInlined ? "\n" : '');
            }
        }

        return $output;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Yaml;

use Symfony\Component\Yaml\Exception\DumpException;
use Symfony\Component\Yaml\Exception\ParseException;
use Symfony\Component\Yaml\Tag\TaggedValue;

/**
 * Inline implements a YAML parser/dumper for the YAML inline syntax.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @internal
 */
class Inline
{
    const REGEX_QUOTED_STRING = '(?:"([^"\\\\]*+(?:\\\\.[^"\\\\]*+)*+)"|\'([^\']*+(?:\'\'[^\']*+)*+)\')';

    public static $parsedLineNumber = -1;
    public static $parsedFilename;

    private static $exceptionOnInvalidType = false;
    private static $objectSupport = false;
    private static $objectForMap = false;
    private static $constantSupport = false;

    /**
     * @param int         $flags
     * @param int|null    $parsedLineNumber
     * @param string|null $parsedFilename
     */
    public static function initialize($flags, $parsedLineNumber = null, $parsedFilename = null)
    {
        self::$exceptionOnInvalidType = (bool) (Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE & $flags);
        self::$objectSupport = (bool) (Yaml::PARSE_OBJECT & $flags);
        self::$objectForMap = (bool) (Yaml::PARSE_OBJECT_FOR_MAP & $flags);
        self::$constantSupport = (bool) (Yaml::PARSE_CONSTANT & $flags);
        self::$parsedFilename = $parsedFilename;

        if (null !== $parsedLineNumber) {
            self::$parsedLineNumber = $parsedLineNumber;
        }
    }

    /**
     * Converts a YAML string to a PHP value.
     *
     * @param string $value      A YAML string
     * @param int    $flags      A bit field of PARSE_* constants to customize the YAML parser behavior
     * @param array  $references Mapping of variable names to values
     *
     * @return mixed A PHP value
     *
     * @throws ParseException
     */
    public static function parse($value, $flags = 0, $references = [])
    {
        if (\is_bool($flags)) {
            @trigger_error('Passing a boolean flag to toggle exception handling is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);

            if ($flags) {
                $flags = Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE;
            } else {
                $flags = 0;
            }
        }

        if (\func_num_args() >= 3 && !\is_array($references)) {
            @trigger_error('Passing a boolean flag to toggle object support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::PARSE_OBJECT flag instead.', E_USER_DEPRECATED);

            if ($references) {
                $flags |= Yaml::PARSE_OBJECT;
            }

            if (\func_num_args() >= 4) {
                @trigger_error('Passing a boolean flag to toggle object for map support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::PARSE_OBJECT_FOR_MAP flag instead.', E_USER_DEPRECATED);

                if (func_get_arg(3)) {
                    $flags |= Yaml::PARSE_OBJECT_FOR_MAP;
                }
            }

            if (\func_num_args() >= 5) {
                $references = func_get_arg(4);
            } else {
                $references = [];
            }
        }

        self::initialize($flags);

        $value = trim($value);

        if ('' === $value) {
            return '';
        }

        if (2 /* MB_OVERLOAD_STRING */ & (int) ini_get('mbstring.func_overload')) {
            $mbEncoding = mb_internal_encoding();
            mb_internal_encoding('ASCII');
        }

        try {
            $i = 0;
            $tag = self::parseTag($value, $i, $flags);
            switch ($value[$i]) {
                case '[':
                    $result = self::parseSequence($value, $flags, $i, $references);
                    ++$i;
                    break;
                case '{':
                    $result = self::parseMapping($value, $flags, $i, $references);
                    ++$i;
                    break;
                default:
                    $result = self::parseScalar($value, $flags, null, $i, null === $tag, $references);
            }

            if (null !== $tag) {
                return new TaggedValue($tag, $result);
            }

            // some comments are allowed at the end
            if (preg_replace('/\s+#.*$/A', '', substr($value, $i))) {
                throw new ParseException(sprintf('Unexpected characters near "%s".', substr($value, $i)), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
            }

            return $result;
        } finally {
            if (isset($mbEncoding)) {
                mb_internal_encoding($mbEncoding);
            }
        }
    }

    /**
     * Dumps a given PHP variable to a YAML string.
     *
     * @param mixed $value The PHP variable to convert
     * @param int   $flags A bit field of Yaml::DUMP_* constants to customize the dumped YAML string
     *
     * @return string The YAML string representing the PHP value
     *
     * @throws DumpException When trying to dump PHP resource
     */
    public static function dump($value, $flags = 0)
    {
        if (\is_bool($flags)) {
            @trigger_error('Passing a boolean flag to toggle exception handling is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);

            if ($flags) {
                $flags = Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE;
            } else {
                $flags = 0;
            }
        }

        if (\func_num_args() >= 3) {
            @trigger_error('Passing a boolean flag to toggle object support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::DUMP_OBJECT flag instead.', E_USER_DEPRECATED);

            if (func_get_arg(2)) {
                $flags |= Yaml::DUMP_OBJECT;
            }
        }

        switch (true) {
            case \is_resource($value):
                if (Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE & $flags) {
                    throw new DumpException(sprintf('Unable to dump PHP resources in a YAML file ("%s").', get_resource_type($value)));
                }

                return 'null';
            case $value instanceof \DateTimeInterface:
                return $value->format('c');
            case \is_object($value):
                if ($value instanceof TaggedValue) {
                    return '!'.$value->getTag().' '.self::dump($value->getValue(), $flags);
                }

                if (Yaml::DUMP_OBJECT & $flags) {
                    return '!php/object '.self::dump(serialize($value));
                }

                if (Yaml::DUMP_OBJECT_AS_MAP & $flags && ($value instanceof \stdClass || $value instanceof \ArrayObject)) {
                    return self::dumpArray($value, $flags & ~Yaml::DUMP_EMPTY_ARRAY_AS_SEQUENCE);
                }

                if (Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE & $flags) {
                    throw new DumpException('Object support when dumping a YAML file has been disabled.');
                }

                return 'null';
            case \is_array($value):
                return self::dumpArray($value, $flags);
            case null === $value:
                return 'null';
            case true === $value:
                return 'true';
            case false === $value:
                return 'false';
            case ctype_digit($value):
                return \is_string($value) ? "'$value'" : (int) $value;
            case is_numeric($value):
                $locale = setlocale(LC_NUMERIC, 0);
                if (false !== $locale) {
                    setlocale(LC_NUMERIC, 'C');
                }
                if (\is_float($value)) {
                    $repr = (string) $value;
                    if (is_infinite($value)) {
                        $repr = str_ireplace('INF', '.Inf', $repr);
                    } elseif (floor($value) == $value && $repr == $value) {
                        // Preserve float data type since storing a whole number will result in integer value.
                        $repr = '!!float '.$repr;
                    }
                } else {
                    $repr = \is_string($value) ? "'$value'" : (string) $value;
                }
                if (false !== $locale) {
                    setlocale(LC_NUMERIC, $locale);
                }

                return $repr;
            case '' == $value:
                return "''";
            case self::isBinaryString($value):
                return '!!binary '.base64_encode($value);
            case Escaper::requiresDoubleQuoting($value):
                return Escaper::escapeWithDoubleQuotes($value);
            case Escaper::requiresSingleQuoting($value):
            case Parser::preg_match('{^[0-9]+[_0-9]*$}', $value):
            case Parser::preg_match(self::getHexRegex(), $value):
            case Parser::preg_match(self::getTimestampRegex(), $value):
                return Escaper::escapeWithSingleQuotes($value);
            default:
                return $value;
        }
    }

    /**
     * Check if given array is hash or just normal indexed array.
     *
     * @internal
     *
     * @param array|\ArrayObject|\stdClass $value The PHP array or array-like object to check
     *
     * @return bool true if value is hash array, false otherwise
     */
    public static function isHash($value)
    {
        if ($value instanceof \stdClass || $value instanceof \ArrayObject) {
            return true;
        }

        $expectedKey = 0;

        foreach ($value as $key => $val) {
            if ($key !== $expectedKey++) {
                return true;
            }
        }

        return false;
    }

    /**
     * Dumps a PHP array to a YAML string.
     *
     * @param array $value The PHP array to dump
     * @param int   $flags A bit field of Yaml::DUMP_* constants to customize the dumped YAML string
     *
     * @return string The YAML string representing the PHP array
     */
    private static function dumpArray($value, $flags)
    {
        // array
        if (($value || Yaml::DUMP_EMPTY_ARRAY_AS_SEQUENCE & $flags) && !self::isHash($value)) {
            $output = [];
            foreach ($value as $val) {
                $output[] = self::dump($val, $flags);
            }

            return sprintf('[%s]', implode(', ', $output));
        }

        // hash
        $output = [];
        foreach ($value as $key => $val) {
            $output[] = sprintf('%s: %s', self::dump($key, $flags), self::dump($val, $flags));
        }

        return sprintf('{ %s }', implode(', ', $output));
    }

    /**
     * Parses a YAML scalar.
     *
     * @param string   $scalar
     * @param int      $flags
     * @param string[] $delimiters
     * @param int      &$i
     * @param bool     $evaluate
     * @param array    $references
     *
     * @return string
     *
     * @throws ParseException When malformed inline YAML string is parsed
     *
     * @internal
     */
    public static function parseScalar($scalar, $flags = 0, $delimiters = null, &$i = 0, $evaluate = true, $references = [], $legacyOmittedKeySupport = false)
    {
        if (\in_array($scalar[$i], ['"', "'"])) {
            // quoted scalar
            $output = self::parseQuotedScalar($scalar, $i);

            if (null !== $delimiters) {
                $tmp = ltrim(substr($scalar, $i), ' ');
                if ('' === $tmp) {
                    throw new ParseException(sprintf('Unexpected end of line, expected one of "%s".', implode('', $delimiters)), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
                }
                if (!\in_array($tmp[0], $delimiters)) {
                    throw new ParseException(sprintf('Unexpected characters (%s).', substr($scalar, $i)), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
                }
            }
        } else {
            // "normal" string
            if (!$delimiters) {
                $output = substr($scalar, $i);
                $i += \strlen($output);

                // remove comments
                if (Parser::preg_match('/[ \t]+#/', $output, $match, PREG_OFFSET_CAPTURE)) {
                    $output = substr($output, 0, $match[0][1]);
                }
            } elseif (Parser::preg_match('/^(.'.($legacyOmittedKeySupport ? '+' : '*').'?)('.implode('|', $delimiters).')/', substr($scalar, $i), $match)) {
                $output = $match[1];
                $i += \strlen($output);
            } else {
                throw new ParseException(sprintf('Malformed inline YAML string: %s.', $scalar), self::$parsedLineNumber + 1, null, self::$parsedFilename);
            }

            // a non-quoted string cannot start with @ or ` (reserved) nor with a scalar indicator (| or >)
            if ($output && ('@' === $output[0] || '`' === $output[0] || '|' === $output[0] || '>' === $output[0])) {
                throw new ParseException(sprintf('The reserved indicator "%s" cannot start a plain scalar; you need to quote the scalar.', $output[0]), self::$parsedLineNumber + 1, $output, self::$parsedFilename);
            }

            if ($output && '%' === $output[0]) {
                @trigger_error(self::getDeprecationMessage(sprintf('Not quoting the scalar "%s" starting with the "%%" indicator character is deprecated since Symfony 3.1 and will throw a ParseException in 4.0.', $output)), E_USER_DEPRECATED);
            }

            if ($evaluate) {
                $output = self::evaluateScalar($output, $flags, $references);
            }
        }

        return $output;
    }

    /**
     * Parses a YAML quoted scalar.
     *
     * @param string $scalar
     * @param int    &$i
     *
     * @return string
     *
     * @throws ParseException When malformed inline YAML string is parsed
     */
    private static function parseQuotedScalar($scalar, &$i)
    {
        if (!Parser::preg_match('/'.self::REGEX_QUOTED_STRING.'/Au', substr($scalar, $i), $match)) {
            throw new ParseException(sprintf('Malformed inline YAML string: %s.', substr($scalar, $i)), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
        }

        $output = substr($match[0], 1, \strlen($match[0]) - 2);

        $unescaper = new Unescaper();
        if ('"' == $scalar[$i]) {
            $output = $unescaper->unescapeDoubleQuotedString($output);
        } else {
            $output = $unescaper->unescapeSingleQuotedString($output);
        }

        $i += \strlen($match[0]);

        return $output;
    }

    /**
     * Parses a YAML sequence.
     *
     * @param string $sequence
     * @param int    $flags
     * @param int    &$i
     * @param array  $references
     *
     * @return array
     *
     * @throws ParseException When malformed inline YAML string is parsed
     */
    private static function parseSequence($sequence, $flags, &$i = 0, $references = [])
    {
        $output = [];
        $len = \strlen($sequence);
        ++$i;

        // [foo, bar, ...]
        while ($i < $len) {
            if (']' === $sequence[$i]) {
                return $output;
            }
            if (',' === $sequence[$i] || ' ' === $sequence[$i]) {
                ++$i;

                continue;
            }

            $tag = self::parseTag($sequence, $i, $flags);
            switch ($sequence[$i]) {
                case '[':
                    // nested sequence
                    $value = self::parseSequence($sequence, $flags, $i, $references);
                    break;
                case '{':
                    // nested mapping
                    $value = self::parseMapping($sequence, $flags, $i, $references);
                    break;
                default:
                    $isQuoted = \in_array($sequence[$i], ['"', "'"]);
                    $value = self::parseScalar($sequence, $flags, [',', ']'], $i, null === $tag, $references);

                    // the value can be an array if a reference has been resolved to an array var
                    if (\is_string($value) && !$isQuoted && false !== strpos($value, ': ')) {
                        // embedded mapping?
                        try {
                            $pos = 0;
                            $value = self::parseMapping('{'.$value.'}', $flags, $pos, $references);
                        } catch (\InvalidArgumentException $e) {
                            // no, it's not
                        }
                    }

                    --$i;
            }

            if (null !== $tag) {
                $value = new TaggedValue($tag, $value);
            }

            $output[] = $value;

            ++$i;
        }

        throw new ParseException(sprintf('Malformed inline YAML string: %s.', $sequence), self::$parsedLineNumber + 1, null, self::$parsedFilename);
    }

    /**
     * Parses a YAML mapping.
     *
     * @param string $mapping
     * @param int    $flags
     * @param int    &$i
     * @param array  $references
     *
     * @return array|\stdClass
     *
     * @throws ParseException When malformed inline YAML string is parsed
     */
    private static function parseMapping($mapping, $flags, &$i = 0, $references = [])
    {
        $output = [];
        $len = \strlen($mapping);
        ++$i;
        $allowOverwrite = false;

        // {foo: bar, bar:foo, ...}
        while ($i < $len) {
            switch ($mapping[$i]) {
                case ' ':
                case ',':
                    ++$i;
                    continue 2;
                case '}':
                    if (self::$objectForMap) {
                        return (object) $output;
                    }

                    return $output;
            }

            // key
            $isKeyQuoted = \in_array($mapping[$i], ['"', "'"], true);
            $key = self::parseScalar($mapping, $flags, [':', ' '], $i, false, [], true);

            if (':' !== $key && false === $i = strpos($mapping, ':', $i)) {
                break;
            }

            if (':' === $key) {
                @trigger_error(self::getDeprecationMessage('Omitting the key of a mapping is deprecated and will throw a ParseException in 4.0.'), E_USER_DEPRECATED);
            }

            if (!$isKeyQuoted) {
                $evaluatedKey = self::evaluateScalar($key, $flags, $references);

                if ('' !== $key && $evaluatedKey !== $key && !\is_string($evaluatedKey) && !\is_int($evaluatedKey)) {
                    @trigger_error(self::getDeprecationMessage('Implicit casting of incompatible mapping keys to strings is deprecated since Symfony 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0. Quote your evaluable mapping keys instead.'), E_USER_DEPRECATED);
                }
            }

            if (':' !== $key && !$isKeyQuoted && (!isset($mapping[$i + 1]) || !\in_array($mapping[$i + 1], [' ', ',', '[', ']', '{', '}'], true))) {
                @trigger_error(self::getDeprecationMessage('Using a colon after an unquoted mapping key that is not followed by an indication character (i.e. " ", ",", "[", "]", "{", "}") is deprecated since Symfony 3.2 and will throw a ParseException in 4.0.'), E_USER_DEPRECATED);
            }

            if ('<<' === $key) {
                $allowOverwrite = true;
            }

            while ($i < $len) {
                if (':' === $mapping[$i] || ' ' === $mapping[$i]) {
                    ++$i;

                    continue;
                }

                $tag = self::parseTag($mapping, $i, $flags);
                switch ($mapping[$i]) {
                    case '[':
                        // nested sequence
                        $value = self::parseSequence($mapping, $flags, $i, $references);
                        // Spec: Keys MUST be unique; first one wins.
                        // Parser cannot abort this mapping earlier, since lines
                        // are processed sequentially.
                        // But overwriting is allowed when a merge node is used in current block.
                        if ('<<' === $key) {
                            foreach ($value as $parsedValue) {
                                $output += $parsedValue;
                            }
                        } elseif ($allowOverwrite || !isset($output[$key])) {
                            if (null !== $tag) {
                                $output[$key] = new TaggedValue($tag, $value);
                            } else {
                                $output[$key] = $value;
                            }
                        } elseif (isset($output[$key])) {
                            @trigger_error(self::getDeprecationMessage(sprintf('Duplicate key "%s" detected whilst parsing YAML. Silent handling of duplicate mapping keys in YAML is deprecated since Symfony 3.2 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.', $key)), E_USER_DEPRECATED);
                        }
                        break;
                    case '{':
                        // nested mapping
                        $value = self::parseMapping($mapping, $flags, $i, $references);
                        // Spec: Keys MUST be unique; first one wins.
                        // Parser cannot abort this mapping earlier, since lines
                        // are processed sequentially.
                        // But overwriting is allowed when a merge node is used in current block.
                        if ('<<' === $key) {
                            $output += $value;
                        } elseif ($allowOverwrite || !isset($output[$key])) {
                            if (null !== $tag) {
                                $output[$key] = new TaggedValue($tag, $value);
                            } else {
                                $output[$key] = $value;
                            }
                        } elseif (isset($output[$key])) {
                            @trigger_error(self::getDeprecationMessage(sprintf('Duplicate key "%s" detected whilst parsing YAML. Silent handling of duplicate mapping keys in YAML is deprecated since Symfony 3.2 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.', $key)), E_USER_DEPRECATED);
                        }
                        break;
                    default:
                        $value = self::parseScalar($mapping, $flags, [',', '}'], $i, null === $tag, $references);
                        // Spec: Keys MUST be unique; first one wins.
                        // Parser cannot abort this mapping earlier, since lines
                        // are processed sequentially.
                        // But overwriting is allowed when a merge node is used in current block.
                        if ('<<' === $key) {
                            $output += $value;
                        } elseif ($allowOverwrite || !isset($output[$key])) {
                            if (null !== $tag) {
                                $output[$key] = new TaggedValue($tag, $value);
                            } else {
                                $output[$key] = $value;
                            }
                        } elseif (isset($output[$key])) {
                            @trigger_error(self::getDeprecationMessage(sprintf('Duplicate key "%s" detected whilst parsing YAML. Silent handling of duplicate mapping keys in YAML is deprecated since Symfony 3.2 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.', $key)), E_USER_DEPRECATED);
                        }
                        --$i;
                }
                ++$i;

                continue 2;
            }
        }

        throw new ParseException(sprintf('Malformed inline YAML string: %s.', $mapping), self::$parsedLineNumber + 1, null, self::$parsedFilename);
    }

    /**
     * Evaluates scalars and replaces magic values.
     *
     * @param string $scalar
     * @param int    $flags
     * @param array  $references
     *
     * @return mixed The evaluated YAML string
     *
     * @throws ParseException when object parsing support was disabled and the parser detected a PHP object or when a reference could not be resolved
     */
    private static function evaluateScalar($scalar, $flags, $references = [])
    {
        $scalar = trim($scalar);
        $scalarLower = strtolower($scalar);

        if (0 === strpos($scalar, '*')) {
            if (false !== $pos = strpos($scalar, '#')) {
                $value = substr($scalar, 1, $pos - 2);
            } else {
                $value = substr($scalar, 1);
            }

            // an unquoted *
            if (false === $value || '' === $value) {
                throw new ParseException('A reference must contain at least one character.', self::$parsedLineNumber + 1, $value, self::$parsedFilename);
            }

            if (!\array_key_exists($value, $references)) {
                throw new ParseException(sprintf('Reference "%s" does not exist.', $value), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
            }

            return $references[$value];
        }

        switch (true) {
            case 'null' === $scalarLower:
            case '' === $scalar:
            case '~' === $scalar:
                return null;
            case 'true' === $scalarLower:
                return true;
            case 'false' === $scalarLower:
                return false;
            case '!' === $scalar[0]:
                switch (true) {
                    case 0 === strpos($scalar, '!str'):
                        @trigger_error(self::getDeprecationMessage('Support for the !str tag is deprecated since Symfony 3.4. Use the !!str tag instead.'), E_USER_DEPRECATED);

                        return (string) substr($scalar, 5);
                    case 0 === strpos($scalar, '!!str '):
                        return (string) substr($scalar, 6);
                    case 0 === strpos($scalar, '! '):
                        @trigger_error(self::getDeprecationMessage('Using the non-specific tag "!" is deprecated since Symfony 3.4 as its behavior will change in 4.0. It will force non-evaluating your values in 4.0. Use plain integers or !!float instead.'), E_USER_DEPRECATED);

                        return (int) self::parseScalar(substr($scalar, 2), $flags);
                    case 0 === strpos($scalar, '!php/object:'):
                        if (self::$objectSupport) {
                            @trigger_error(self::getDeprecationMessage('The !php/object: tag to indicate dumped PHP objects is deprecated since Symfony 3.4 and will be removed in 4.0. Use the !php/object (without the colon) tag instead.'), E_USER_DEPRECATED);

                            return unserialize(substr($scalar, 12));
                        }

                        if (self::$exceptionOnInvalidType) {
                            throw new ParseException('Object support when parsing a YAML file has been disabled.', self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
                        }

                        return null;
                    case 0 === strpos($scalar, '!!php/object:'):
                        if (self::$objectSupport) {
                            @trigger_error(self::getDeprecationMessage('The !!php/object: tag to indicate dumped PHP objects is deprecated since Symfony 3.1 and will be removed in 4.0. Use the !php/object (without the colon) tag instead.'), E_USER_DEPRECATED);

                            return unserialize(substr($scalar, 13));
                        }

                        if (self::$exceptionOnInvalidType) {
                            throw new ParseException('Object support when parsing a YAML file has been disabled.', self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
                        }

                        return null;
                    case 0 === strpos($scalar, '!php/object'):
                        if (self::$objectSupport) {
                            return unserialize(self::parseScalar(substr($scalar, 12)));
                        }

                        if (self::$exceptionOnInvalidType) {
                            throw new ParseException('Object support when parsing a YAML file has been disabled.', self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
                        }

                        return null;
                    case 0 === strpos($scalar, '!php/const:'):
                        if (self::$constantSupport) {
                            @trigger_error(self::getDeprecationMessage('The !php/const: tag to indicate dumped PHP constants is deprecated since Symfony 3.4 and will be removed in 4.0. Use the !php/const (without the colon) tag instead.'), E_USER_DEPRECATED);

                            if (\defined($const = substr($scalar, 11))) {
                                return \constant($const);
                            }

                            throw new ParseException(sprintf('The constant "%s" is not defined.', $const), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
                        }
                        if (self::$exceptionOnInvalidType) {
                            throw new ParseException(sprintf('The string "%s" could not be parsed as a constant. Have you forgotten to pass the "Yaml::PARSE_CONSTANT" flag to the parser?', $scalar), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
                        }

                        return null;
                    case 0 === strpos($scalar, '!php/const'):
                        if (self::$constantSupport) {
                            $i = 0;
                            if (\defined($const = self::parseScalar(substr($scalar, 11), 0, null, $i, false))) {
                                return \constant($const);
                            }

                            throw new ParseException(sprintf('The constant "%s" is not defined.', $const), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
                        }
                        if (self::$exceptionOnInvalidType) {
                            throw new ParseException(sprintf('The string "%s" could not be parsed as a constant. Have you forgotten to pass the "Yaml::PARSE_CONSTANT" flag to the parser?', $scalar), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
                        }

                        return null;
                    case 0 === strpos($scalar, '!!float '):
                        return (float) substr($scalar, 8);
                    case 0 === strpos($scalar, '!!binary '):
                        return self::evaluateBinaryScalar(substr($scalar, 9));
                    default:
                        @trigger_error(self::getDeprecationMessage(sprintf('Using the unquoted scalar value "%s" is deprecated since Symfony 3.3 and will be considered as a tagged value in 4.0. You must quote it.', $scalar)), E_USER_DEPRECATED);
                }

            // Optimize for returning strings.
            // no break
            case '+' === $scalar[0] || '-' === $scalar[0] || '.' === $scalar[0] || is_numeric($scalar[0]):
                switch (true) {
                    case Parser::preg_match('{^[+-]?[0-9][0-9_]*$}', $scalar):
                        $scalar = str_replace('_', '', (string) $scalar);
                        // omitting the break / return as integers are handled in the next case
                        // no break
                    case ctype_digit($scalar):
                        $raw = $scalar;
                        $cast = (int) $scalar;

                        return '0' == $scalar[0] ? octdec($scalar) : (((string) $raw == (string) $cast) ? $cast : $raw);
                    case '-' === $scalar[0] && ctype_digit(substr($scalar, 1)):
                        $raw = $scalar;
                        $cast = (int) $scalar;

                        return '0' == $scalar[1] ? octdec($scalar) : (((string) $raw === (string) $cast) ? $cast : $raw);
                    case is_numeric($scalar):
                    case Parser::preg_match(self::getHexRegex(), $scalar):
                        $scalar = str_replace('_', '', $scalar);

                        return '0x' === $scalar[0].$scalar[1] ? hexdec($scalar) : (float) $scalar;
                    case '.inf' === $scalarLower:
                    case '.nan' === $scalarLower:
                        return -log(0);
                    case '-.inf' === $scalarLower:
                        return log(0);
                    case Parser::preg_match('/^(-|\+)?[0-9][0-9,]*(\.[0-9_]+)?$/', $scalar):
                    case Parser::preg_match('/^(-|\+)?[0-9][0-9_]*(\.[0-9_]+)?$/', $scalar):
                        if (false !== strpos($scalar, ',')) {
                            @trigger_error(self::getDeprecationMessage('Using the comma as a group separator for floats is deprecated since Symfony 3.2 and will be removed in 4.0.'), E_USER_DEPRECATED);
                        }

                        return (float) str_replace([',', '_'], '', $scalar);
                    case Parser::preg_match(self::getTimestampRegex(), $scalar):
                        if (Yaml::PARSE_DATETIME & $flags) {
                            // When no timezone is provided in the parsed date, YAML spec says we must assume UTC.
                            return new \DateTime($scalar, new \DateTimeZone('UTC'));
                        }

                        $timeZone = date_default_timezone_get();
                        date_default_timezone_set('UTC');
                        $time = strtotime($scalar);
                        date_default_timezone_set($timeZone);

                        return $time;
                }
        }

        return (string) $scalar;
    }

    /**
     * @param string $value
     * @param int    &$i
     * @param int    $flags
     *
     * @return string|null
     */
    private static function parseTag($value, &$i, $flags)
    {
        if ('!' !== $value[$i]) {
            return null;
        }

        $tagLength = strcspn($value, " \t\n", $i + 1);
        $tag = substr($value, $i + 1, $tagLength);

        $nextOffset = $i + $tagLength + 1;
        $nextOffset += strspn($value, ' ', $nextOffset);

        // Is followed by a scalar
        if ((!isset($value[$nextOffset]) || !\in_array($value[$nextOffset], ['[', '{'], true)) && 'tagged' !== $tag) {
            // Manage non-whitelisted scalars in {@link self::evaluateScalar()}
            return null;
        }

        // Built-in tags
        if ($tag && '!' === $tag[0]) {
            throw new ParseException(sprintf('The built-in tag "!%s" is not implemented.', $tag), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
        }

        if (Yaml::PARSE_CUSTOM_TAGS & $flags) {
            $i = $nextOffset;

            return $tag;
        }

        throw new ParseException(sprintf('Tags support is not enabled. Enable the `Yaml::PARSE_CUSTOM_TAGS` flag to use "!%s".', $tag), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
    }

    /**
     * @param string $scalar
     *
     * @return string
     *
     * @internal
     */
    public static function evaluateBinaryScalar($scalar)
    {
        $parsedBinaryData = self::parseScalar(preg_replace('/\s/', '', $scalar));

        if (0 !== (\strlen($parsedBinaryData) % 4)) {
            throw new ParseException(sprintf('The normalized base64 encoded data (data without whitespace characters) length must be a multiple of four (%d bytes given).', \strlen($parsedBinaryData)), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
        }

        if (!Parser::preg_match('#^[A-Z0-9+/]+={0,2}$#i', $parsedBinaryData)) {
            throw new ParseException(sprintf('The base64 encoded data (%s) contains invalid characters.', $parsedBinaryData), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
        }

        return base64_decode($parsedBinaryData, true);
    }

    private static function isBinaryString($value)
    {
        return !preg_match('//u', $value) || preg_match('/[^\x00\x07-\x0d\x1B\x20-\xff]/', $value);
    }

    /**
     * Gets a regex that matches a YAML date.
     *
     * @return string The regular expression
     *
     * @see http://www.yaml.org/spec/1.2/spec.html#id2761573
     */
    private static function getTimestampRegex()
    {
        return <<<EOF
        ~^
        (?P<year>[0-9][0-9][0-9][0-9])
        -(?P<month>[0-9][0-9]?)
        -(?P<day>[0-9][0-9]?)
        (?:(?:[Tt]|[ \t]+)
        (?P<hour>[0-9][0-9]?)
        :(?P<minute>[0-9][0-9])
        :(?P<second>[0-9][0-9])
        (?:\.(?P<fraction>[0-9]*))?
        (?:[ \t]*(?P<tz>Z|(?P<tz_sign>[-+])(?P<tz_hour>[0-9][0-9]?)
        (?::(?P<tz_minute>[0-9][0-9]))?))?)?
        $~x
EOF;
    }

    /**
     * Gets a regex that matches a YAML number in hexadecimal notation.
     *
     * @return string
     */
    private static function getHexRegex()
    {
        return '~^0x[0-9a-f_]++$~i';
    }

    private static function getDeprecationMessage($message)
    {
        $message = rtrim($message, '.');

        if (null !== self::$parsedFilename) {
            $message .= ' in '.self::$parsedFilename;
        }

        if (-1 !== self::$parsedLineNumber) {
            $message .= ' on line '.(self::$parsedLineNumber + 1);
        }

        return $message.'.';
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Yaml;

use Symfony\Component\Yaml\Exception\ParseException;

/**
 * Yaml offers convenience methods to load and dump YAML.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @final since version 3.4
 */
class Yaml
{
    const DUMP_OBJECT = 1;
    const PARSE_EXCEPTION_ON_INVALID_TYPE = 2;
    const PARSE_OBJECT = 4;
    const PARSE_OBJECT_FOR_MAP = 8;
    const DUMP_EXCEPTION_ON_INVALID_TYPE = 16;
    const PARSE_DATETIME = 32;
    const DUMP_OBJECT_AS_MAP = 64;
    const DUMP_MULTI_LINE_LITERAL_BLOCK = 128;
    const PARSE_CONSTANT = 256;
    const PARSE_CUSTOM_TAGS = 512;
    const DUMP_EMPTY_ARRAY_AS_SEQUENCE = 1024;

    /**
     * @deprecated since version 3.4, to be removed in 4.0. Quote your evaluable keys instead.
     */
    const PARSE_KEYS_AS_STRINGS = 2048;

    /**
     * Parses a YAML file into a PHP value.
     *
     * Usage:
     *
     *     $array = Yaml::parseFile('config.yml');
     *     print_r($array);
     *
     * @param string $filename The path to the YAML file to be parsed
     * @param int    $flags    A bit field of PARSE_* constants to customize the YAML parser behavior
     *
     * @return mixed The YAML converted to a PHP value
     *
     * @throws ParseException If the file could not be read or the YAML is not valid
     */
    public static function parseFile($filename, $flags = 0)
    {
        $yaml = new Parser();

        return $yaml->parseFile($filename, $flags);
    }

    /**
     * Parses YAML into a PHP value.
     *
     *  Usage:
     *  <code>
     *   $array = Yaml::parse(file_get_contents('config.yml'));
     *   print_r($array);
     *  </code>
     *
     * @param string $input A string containing YAML
     * @param int    $flags A bit field of PARSE_* constants to customize the YAML parser behavior
     *
     * @return mixed The YAML converted to a PHP value
     *
     * @throws ParseException If the YAML is not valid
     */
    public static function parse($input, $flags = 0)
    {
        if (\is_bool($flags)) {
            @trigger_error('Passing a boolean flag to toggle exception handling is deprecated since Symfony 3.1 and will be removed in 4.0. Use the PARSE_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);

            if ($flags) {
                $flags = self::PARSE_EXCEPTION_ON_INVALID_TYPE;
            } else {
                $flags = 0;
            }
        }

        if (\func_num_args() >= 3) {
            @trigger_error('Passing a boolean flag to toggle object support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the PARSE_OBJECT flag instead.', E_USER_DEPRECATED);

            if (func_get_arg(2)) {
                $flags |= self::PARSE_OBJECT;
            }
        }

        if (\func_num_args() >= 4) {
            @trigger_error('Passing a boolean flag to toggle object for map support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::PARSE_OBJECT_FOR_MAP flag instead.', E_USER_DEPRECATED);

            if (func_get_arg(3)) {
                $flags |= self::PARSE_OBJECT_FOR_MAP;
            }
        }

        $yaml = new Parser();

        return $yaml->parse($input, $flags);
    }

    /**
     * Dumps a PHP value to a YAML string.
     *
     * The dump method, when supplied with an array, will do its best
     * to convert the array into friendly YAML.
     *
     * @param mixed $input  The PHP value
     * @param int   $inline The level where you switch to inline YAML
     * @param int   $indent The amount of spaces to use for indentation of nested nodes
     * @param int   $flags  A bit field of DUMP_* constants to customize the dumped YAML string
     *
     * @return string A YAML string representing the original PHP value
     */
    public static function dump($input, $inline = 2, $indent = 4, $flags = 0)
    {
        if (\is_bool($flags)) {
            @trigger_error('Passing a boolean flag to toggle exception handling is deprecated since Symfony 3.1 and will be removed in 4.0. Use the DUMP_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);

            if ($flags) {
                $flags = self::DUMP_EXCEPTION_ON_INVALID_TYPE;
            } else {
                $flags = 0;
            }
        }

        if (\func_num_args() >= 5) {
            @trigger_error('Passing a boolean flag to toggle object support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the DUMP_OBJECT flag instead.', E_USER_DEPRECATED);

            if (func_get_arg(4)) {
                $flags |= self::DUMP_OBJECT;
            }
        }

        $yaml = new Dumper($indent);

        return $yaml->dump($input, $inline, 0, $flags);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Yaml\Command;

use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Exception\InvalidArgumentException;
use Symfony\Component\Console\Exception\RuntimeException;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Style\SymfonyStyle;
use Symfony\Component\Yaml\Exception\ParseException;
use Symfony\Component\Yaml\Parser;
use Symfony\Component\Yaml\Yaml;

/**
 * Validates YAML files syntax and outputs encountered errors.
 *
 * @author GrÃ©goire Pineau <lyrixx@lyrixx.info>
 * @author Robin Chalas <robin.chalas@gmail.com>
 */
class LintCommand extends Command
{
    protected static $defaultName = 'lint:yaml';

    private $parser;
    private $format;
    private $displayCorrectFiles;
    private $directoryIteratorProvider;
    private $isReadableProvider;

    public function __construct($name = null, $directoryIteratorProvider = null, $isReadableProvider = null)
    {
        parent::__construct($name);

        $this->directoryIteratorProvider = $directoryIteratorProvider;
        $this->isReadableProvider = $isReadableProvider;
    }

    /**
     * {@inheritdoc}
     */
    protected function configure()
    {
        $this
            ->setDescription('Lints a file and outputs encountered errors')
            ->addArgument('filename', null, 'A file or a directory or STDIN')
            ->addOption('format', null, InputOption::VALUE_REQUIRED, 'The output format', 'txt')
            ->addOption('parse-tags', null, InputOption::VALUE_NONE, 'Parse custom tags')
            ->setHelp(<<<EOF
The <info>%command.name%</info> command lints a YAML file and outputs to STDOUT
the first encountered syntax error.

You can validates YAML contents passed from STDIN:

  <info>cat filename | php %command.full_name%</info>

You can also validate the syntax of a file:

  <info>php %command.full_name% filename</info>

Or of a whole directory:

  <info>php %command.full_name% dirname</info>
  <info>php %command.full_name% dirname --format=json</info>

EOF
            )
        ;
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $io = new SymfonyStyle($input, $output);
        $filename = $input->getArgument('filename');
        $this->format = $input->getOption('format');
        $this->displayCorrectFiles = $output->isVerbose();
        $flags = $input->getOption('parse-tags') ? Yaml::PARSE_CUSTOM_TAGS : 0;

        if (!$filename) {
            if (!$stdin = $this->getStdin()) {
                throw new RuntimeException('Please provide a filename or pipe file content to STDIN.');
            }

            return $this->display($io, [$this->validate($stdin, $flags)]);
        }

        if (!$this->isReadable($filename)) {
            throw new RuntimeException(sprintf('File or directory "%s" is not readable.', $filename));
        }

        $filesInfo = [];
        foreach ($this->getFiles($filename) as $file) {
            $filesInfo[] = $this->validate(file_get_contents($file), $flags, $file);
        }

        return $this->display($io, $filesInfo);
    }

    private function validate($content, $flags, $file = null)
    {
        $prevErrorHandler = set_error_handler(function ($level, $message, $file, $line) use (&$prevErrorHandler) {
            if (E_USER_DEPRECATED === $level) {
                throw new ParseException($message, $this->getParser()->getRealCurrentLineNb() + 1);
            }

            return $prevErrorHandler ? $prevErrorHandler($level, $message, $file, $line) : false;
        });

        try {
            $this->getParser()->parse($content, Yaml::PARSE_CONSTANT | $flags);
        } catch (ParseException $e) {
            return ['file' => $file, 'line' => $e->getParsedLine(), 'valid' => false, 'message' => $e->getMessage()];
        } finally {
            restore_error_handler();
        }

        return ['file' => $file, 'valid' => true];
    }

    private function display(SymfonyStyle $io, array $files)
    {
        switch ($this->format) {
            case 'txt':
                return $this->displayTxt($io, $files);
            case 'json':
                return $this->displayJson($io, $files);
            default:
                throw new InvalidArgumentException(sprintf('The format "%s" is not supported.', $this->format));
        }
    }

    private function displayTxt(SymfonyStyle $io, array $filesInfo)
    {
        $countFiles = \count($filesInfo);
        $erroredFiles = 0;

        foreach ($filesInfo as $info) {
            if ($info['valid'] && $this->displayCorrectFiles) {
                $io->comment('<info>OK</info>'.($info['file'] ? sprintf(' in %s', $info['file']) : ''));
            } elseif (!$info['valid']) {
                ++$erroredFiles;
                $io->text('<error> ERROR </error>'.($info['file'] ? sprintf(' in %s', $info['file']) : ''));
                $io->text(sprintf('<error> >> %s</error>', $info['message']));
            }
        }

        if (0 === $erroredFiles) {
            $io->success(sprintf('All %d YAML files contain valid syntax.', $countFiles));
        } else {
            $io->warning(sprintf('%d YAML files have valid syntax and %d contain errors.', $countFiles - $erroredFiles, $erroredFiles));
        }

        return min($erroredFiles, 1);
    }

    private function displayJson(SymfonyStyle $io, array $filesInfo)
    {
        $errors = 0;

        array_walk($filesInfo, function (&$v) use (&$errors) {
            $v['file'] = (string) $v['file'];
            if (!$v['valid']) {
                ++$errors;
            }
        });

        $io->writeln(json_encode($filesInfo, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES));

        return min($errors, 1);
    }

    private function getFiles($fileOrDirectory)
    {
        if (is_file($fileOrDirectory)) {
            yield new \SplFileInfo($fileOrDirectory);

            return;
        }

        foreach ($this->getDirectoryIterator($fileOrDirectory) as $file) {
            if (!\in_array($file->getExtension(), ['yml', 'yaml'])) {
                continue;
            }

            yield $file;
        }
    }

    /**
     * @return string|null
     */
    private function getStdin()
    {
        if (0 !== ftell(STDIN)) {
            return null;
        }

        $inputs = '';
        while (!feof(STDIN)) {
            $inputs .= fread(STDIN, 1024);
        }

        return $inputs;
    }

    private function getParser()
    {
        if (!$this->parser) {
            $this->parser = new Parser();
        }

        return $this->parser;
    }

    private function getDirectoryIterator($directory)
    {
        $default = function ($directory) {
            return new \RecursiveIteratorIterator(
                new \RecursiveDirectoryIterator($directory, \FilesystemIterator::SKIP_DOTS | \FilesystemIterator::FOLLOW_SYMLINKS),
                \RecursiveIteratorIterator::LEAVES_ONLY
            );
        };

        if (null !== $this->directoryIteratorProvider) {
            return \call_user_func($this->directoryIteratorProvider, $directory, $default);
        }

        return $default($directory);
    }

    private function isReadable($fileOrDirectory)
    {
        $default = function ($fileOrDirectory) {
            return is_readable($fileOrDirectory);
        };

        if (null !== $this->isReadableProvider) {
            return \call_user_func($this->isReadableProvider, $fileOrDirectory, $default);
        }

        return $default($fileOrDirectory);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Yaml\Exception;

/**
 * Exception class thrown when an error occurs during dumping.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class DumpException extends RuntimeException
{
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Yaml\Exception;

/**
 * Exception interface for all exceptions thrown by the component.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
interface ExceptionInterface
{
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Yaml\Exception;

/**
 * Exception class thrown when an error occurs during parsing.
 *
 * @author Romain Neutron <imprec@gmail.com>
 */
class RuntimeException extends \RuntimeException implements ExceptionInterface
{
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Yaml\Exception;

/**
 * Exception class thrown when an error occurs during parsing.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ParseException extends RuntimeException
{
    private $parsedFile;
    private $parsedLine;
    private $snippet;
    private $rawMessage;

    /**
     * @param string          $message    The error message
     * @param int             $parsedLine The line where the error occurred
     * @param string|null     $snippet    The snippet of code near the problem
     * @param string|null     $parsedFile The file name where the error occurred
     * @param \Exception|null $previous   The previous exception
     */
    public function __construct($message, $parsedLine = -1, $snippet = null, $parsedFile = null, \Exception $previous = null)
    {
        $this->parsedFile = $parsedFile;
        $this->parsedLine = $parsedLine;
        $this->snippet = $snippet;
        $this->rawMessage = $message;

        $this->updateRepr();

        parent::__construct($this->message, 0, $previous);
    }

    /**
     * Gets the snippet of code near the error.
     *
     * @return string The snippet of code
     */
    public function getSnippet()
    {
        return $this->snippet;
    }

    /**
     * Sets the snippet of code near the error.
     *
     * @param string $snippet The code snippet
     */
    public function setSnippet($snippet)
    {
        $this->snippet = $snippet;

        $this->updateRepr();
    }

    /**
     * Gets the filename where the error occurred.
     *
     * This method returns null if a string is parsed.
     *
     * @return string The filename
     */
    public function getParsedFile()
    {
        return $this->parsedFile;
    }

    /**
     * Sets the filename where the error occurred.
     *
     * @param string $parsedFile The filename
     */
    public function setParsedFile($parsedFile)
    {
        $this->parsedFile = $parsedFile;

        $this->updateRepr();
    }

    /**
     * Gets the line where the error occurred.
     *
     * @return int The file line
     */
    public function getParsedLine()
    {
        return $this->parsedLine;
    }

    /**
     * Sets the line where the error occurred.
     *
     * @param int $parsedLine The file line
     */
    public function setParsedLine($parsedLine)
    {
        $this->parsedLine = $parsedLine;

        $this->updateRepr();
    }

    private function updateRepr()
    {
        $this->message = $this->rawMessage;

        $dot = false;
        if ('.' === substr($this->message, -1)) {
            $this->message = substr($this->message, 0, -1);
            $dot = true;
        }

        if (null !== $this->parsedFile) {
            $this->message .= sprintf(' in %s', json_encode($this->parsedFile, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE));
        }

        if ($this->parsedLine >= 0) {
            $this->message .= sprintf(' at line %d', $this->parsedLine);
        }

        if ($this->snippet) {
            $this->message .= sprintf(' (near "%s")', $this->snippet);
        }

        if ($dot) {
            $this->message .= '.';
        }
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Yaml\Tag;

/**
 * @author Nicolas Grekas <p@tchwork.com>
 * @author Guilhem N. <egetick@gmail.com>
 */
final class TaggedValue
{
    private $tag;
    private $value;

    /**
     * @param string $tag
     * @param mixed  $value
     */
    public function __construct($tag, $value)
    {
        $this->tag = $tag;
        $this->value = $value;
    }

    /**
     * @return string
     */
    public function getTag()
    {
        return $this->tag;
    }

    /**
     * @return mixed
     */
    public function getValue()
    {
        return $this->value;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Process;

@trigger_error(sprintf('The %s class is deprecated since Symfony 3.4 and will be removed in 4.0. Use the Process class instead.', ProcessBuilder::class), E_USER_DEPRECATED);

use Symfony\Component\Process\Exception\InvalidArgumentException;
use Symfony\Component\Process\Exception\LogicException;

/**
 * @author Kris Wallsmith <kris@symfony.com>
 *
 * @deprecated since version 3.4, to be removed in 4.0. Use the Process class instead.
 */
class ProcessBuilder
{
    private $arguments;
    private $cwd;
    private $env = [];
    private $input;
    private $timeout = 60;
    private $options;
    private $inheritEnv = true;
    private $prefix = [];
    private $outputDisabled = false;

    /**
     * @param string[] $arguments An array of arguments
     */
    public function __construct(array $arguments = [])
    {
        $this->arguments = $arguments;
    }

    /**
     * Creates a process builder instance.
     *
     * @param string[] $arguments An array of arguments
     *
     * @return static
     */
    public static function create(array $arguments = [])
    {
        return new static($arguments);
    }

    /**
     * Adds an unescaped argument to the command string.
     *
     * @param string $argument A command argument
     *
     * @return $this
     */
    public function add($argument)
    {
        $this->arguments[] = $argument;

        return $this;
    }

    /**
     * Adds a prefix to the command string.
     *
     * The prefix is preserved when resetting arguments.
     *
     * @param string|array $prefix A command prefix or an array of command prefixes
     *
     * @return $this
     */
    public function setPrefix($prefix)
    {
        $this->prefix = \is_array($prefix) ? $prefix : [$prefix];

        return $this;
    }

    /**
     * Sets the arguments of the process.
     *
     * Arguments must not be escaped.
     * Previous arguments are removed.
     *
     * @param string[] $arguments
     *
     * @return $this
     */
    public function setArguments(array $arguments)
    {
        $this->arguments = $arguments;

        return $this;
    }

    /**
     * Sets the working directory.
     *
     * @param string|null $cwd The working directory
     *
     * @return $this
     */
    public function setWorkingDirectory($cwd)
    {
        $this->cwd = $cwd;

        return $this;
    }

    /**
     * Sets whether environment variables will be inherited or not.
     *
     * @param bool $inheritEnv
     *
     * @return $this
     */
    public function inheritEnvironmentVariables($inheritEnv = true)
    {
        $this->inheritEnv = $inheritEnv;

        return $this;
    }

    /**
     * Sets an environment variable.
     *
     * Setting a variable overrides its previous value. Use `null` to unset a
     * defined environment variable.
     *
     * @param string      $name  The variable name
     * @param string|null $value The variable value
     *
     * @return $this
     */
    public function setEnv($name, $value)
    {
        $this->env[$name] = $value;

        return $this;
    }

    /**
     * Adds a set of environment variables.
     *
     * Already existing environment variables with the same name will be
     * overridden by the new values passed to this method. Pass `null` to unset
     * a variable.
     *
     * @param array $variables The variables
     *
     * @return $this
     */
    public function addEnvironmentVariables(array $variables)
    {
        $this->env = array_replace($this->env, $variables);

        return $this;
    }

    /**
     * Sets the input of the process.
     *
     * @param resource|string|int|float|bool|\Traversable|null $input The input content
     *
     * @return $this
     *
     * @throws InvalidArgumentException In case the argument is invalid
     */
    public function setInput($input)
    {
        $this->input = ProcessUtils::validateInput(__METHOD__, $input);

        return $this;
    }

    /**
     * Sets the process timeout.
     *
     * To disable the timeout, set this value to null.
     *
     * @param float|null $timeout
     *
     * @return $this
     *
     * @throws InvalidArgumentException
     */
    public function setTimeout($timeout)
    {
        if (null === $timeout) {
            $this->timeout = null;

            return $this;
        }

        $timeout = (float) $timeout;

        if ($timeout < 0) {
            throw new InvalidArgumentException('The timeout value must be a valid positive integer or float number.');
        }

        $this->timeout = $timeout;

        return $this;
    }

    /**
     * Adds a proc_open option.
     *
     * @param string $name  The option name
     * @param string $value The option value
     *
     * @return $this
     */
    public function setOption($name, $value)
    {
        $this->options[$name] = $value;

        return $this;
    }

    /**
     * Disables fetching output and error output from the underlying process.
     *
     * @return $this
     */
    public function disableOutput()
    {
        $this->outputDisabled = true;

        return $this;
    }

    /**
     * Enables fetching output and error output from the underlying process.
     *
     * @return $this
     */
    public function enableOutput()
    {
        $this->outputDisabled = false;

        return $this;
    }

    /**
     * Creates a Process instance and returns it.
     *
     * @return Process
     *
     * @throws LogicException In case no arguments have been provided
     */
    public function getProcess()
    {
        if (0 === \count($this->prefix) && 0 === \count($this->arguments)) {
            throw new LogicException('You must add() command arguments before calling getProcess().');
        }

        $arguments = array_merge($this->prefix, $this->arguments);
        $process = new Process($arguments, $this->cwd, $this->env, $this->input, $this->timeout, $this->options);
        // to preserve the BC with symfony <3.3, we convert the array structure
        // to a string structure to avoid the prefixing with the exec command
        $process->setCommandLine($process->getCommandLine());

        if ($this->inheritEnv) {
            $process->inheritEnvironmentVariables();
        }
        if ($this->outputDisabled) {
            $process->disableOutput();
        }

        return $process;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Process;

/**
 * Generic executable finder.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Johannes M. Schmitt <schmittjoh@gmail.com>
 */
class ExecutableFinder
{
    private $suffixes = ['.exe', '.bat', '.cmd', '.com'];

    /**
     * Replaces default suffixes of executable.
     */
    public function setSuffixes(array $suffixes)
    {
        $this->suffixes = $suffixes;
    }

    /**
     * Adds new possible suffix to check for executable.
     *
     * @param string $suffix
     */
    public function addSuffix($suffix)
    {
        $this->suffixes[] = $suffix;
    }

    /**
     * Finds an executable by name.
     *
     * @param string      $name      The executable name (without the extension)
     * @param string|null $default   The default to return if no executable is found
     * @param array       $extraDirs Additional dirs to check into
     *
     * @return string|null The executable path or default value
     */
    public function find($name, $default = null, array $extraDirs = [])
    {
        if (ini_get('open_basedir')) {
            $searchPath = array_merge(explode(PATH_SEPARATOR, ini_get('open_basedir')), $extraDirs);
            $dirs = [];
            foreach ($searchPath as $path) {
                // Silencing against https://bugs.php.net/69240
                if (@is_dir($path)) {
                    $dirs[] = $path;
                } else {
                    if (basename($path) == $name && @is_executable($path)) {
                        return $path;
                    }
                }
            }
        } else {
            $dirs = array_merge(
                explode(PATH_SEPARATOR, getenv('PATH') ?: getenv('Path')),
                $extraDirs
            );
        }

        $suffixes = [''];
        if ('\\' === \DIRECTORY_SEPARATOR) {
            $pathExt = getenv('PATHEXT');
            $suffixes = array_merge($pathExt ? explode(PATH_SEPARATOR, $pathExt) : $this->suffixes, $suffixes);
        }
        foreach ($suffixes as $suffix) {
            foreach ($dirs as $dir) {
                if (@is_file($file = $dir.\DIRECTORY_SEPARATOR.$name.$suffix) && ('\\' === \DIRECTORY_SEPARATOR || @is_executable($file))) {
                    return $file;
                }
            }
        }

        return $default;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Process\Pipes;

use Symfony\Component\Process\Process;

/**
 * UnixPipes implementation uses unix pipes as handles.
 *
 * @author Romain Neutron <imprec@gmail.com>
 *
 * @internal
 */
class UnixPipes extends AbstractPipes
{
    private $ttyMode;
    private $ptyMode;
    private $haveReadSupport;

    public function __construct($ttyMode, $ptyMode, $input, $haveReadSupport)
    {
        $this->ttyMode = (bool) $ttyMode;
        $this->ptyMode = (bool) $ptyMode;
        $this->haveReadSupport = (bool) $haveReadSupport;

        parent::__construct($input);
    }

    public function __destruct()
    {
        $this->close();
    }

    /**
     * {@inheritdoc}
     */
    public function getDescriptors()
    {
        if (!$this->haveReadSupport) {
            $nullstream = fopen('/dev/null', 'c');

            return [
                ['pipe', 'r'],
                $nullstream,
                $nullstream,
            ];
        }

        if ($this->ttyMode) {
            return [
                ['file', '/dev/tty', 'r'],
                ['file', '/dev/tty', 'w'],
                ['file', '/dev/tty', 'w'],
            ];
        }

        if ($this->ptyMode && Process::isPtySupported()) {
            return [
                ['pty'],
                ['pty'],
                ['pty'],
            ];
        }

        return [
            ['pipe', 'r'],
            ['pipe', 'w'], // stdout
            ['pipe', 'w'], // stderr
        ];
    }

    /**
     * {@inheritdoc}
     */
    public function getFiles()
    {
        return [];
    }

    /**
     * {@inheritdoc}
     */
    public function readAndWrite($blocking, $close = false)
    {
        $this->unblock();
        $w = $this->write();

        $read = $e = [];
        $r = $this->pipes;
        unset($r[0]);

        // let's have a look if something changed in streams
        set_error_handler([$this, 'handleError']);
        if (($r || $w) && false === stream_select($r, $w, $e, 0, $blocking ? Process::TIMEOUT_PRECISION * 1E6 : 0)) {
            restore_error_handler();
            // if a system call has been interrupted, forget about it, let's try again
            // otherwise, an error occurred, let's reset pipes
            if (!$this->hasSystemCallBeenInterrupted()) {
                $this->pipes = [];
            }

            return $read;
        }
        restore_error_handler();

        foreach ($r as $pipe) {
            // prior PHP 5.4 the array passed to stream_select is modified and
            // lose key association, we have to find back the key
            $read[$type = array_search($pipe, $this->pipes, true)] = '';

            do {
                $data = fread($pipe, self::CHUNK_SIZE);
                $read[$type] .= $data;
            } while (isset($data[0]) && ($close || isset($data[self::CHUNK_SIZE - 1])));

            if (!isset($read[$type][0])) {
                unset($read[$type]);
            }

            if ($close && feof($pipe)) {
                fclose($pipe);
                unset($this->pipes[$type]);
            }
        }

        return $read;
    }

    /**
     * {@inheritdoc}
     */
    public function haveReadSupport()
    {
        return $this->haveReadSupport;
    }

    /**
     * {@inheritdoc}
     */
    public function areOpen()
    {
        return (bool) $this->pipes;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Process\Pipes;

use Symfony\Component\Process\Exception\RuntimeException;
use Symfony\Component\Process\Process;

/**
 * WindowsPipes implementation uses temporary files as handles.
 *
 * @see https://bugs.php.net/51800
 * @see https://bugs.php.net/65650
 *
 * @author Romain Neutron <imprec@gmail.com>
 *
 * @internal
 */
class WindowsPipes extends AbstractPipes
{
    private $files = [];
    private $fileHandles = [];
    private $lockHandles = [];
    private $readBytes = [
        Process::STDOUT => 0,
        Process::STDERR => 0,
    ];
    private $haveReadSupport;

    public function __construct($input, $haveReadSupport)
    {
        $this->haveReadSupport = (bool) $haveReadSupport;

        if ($this->haveReadSupport) {
            // Fix for PHP bug #51800: reading from STDOUT pipe hangs forever on Windows if the output is too big.
            // Workaround for this problem is to use temporary files instead of pipes on Windows platform.
            //
            // @see https://bugs.php.net/51800
            $pipes = [
                Process::STDOUT => Process::OUT,
                Process::STDERR => Process::ERR,
            ];
            $tmpDir = sys_get_temp_dir();
            $lastError = 'unknown reason';
            set_error_handler(function ($type, $msg) use (&$lastError) { $lastError = $msg; });
            for ($i = 0;; ++$i) {
                foreach ($pipes as $pipe => $name) {
                    $file = sprintf('%s\\sf_proc_%02X.%s', $tmpDir, $i, $name);

                    if (!$h = fopen($file.'.lock', 'w')) {
                        restore_error_handler();
                        throw new RuntimeException(sprintf('A temporary file could not be opened to write the process output: %s', $lastError));
                    }
                    if (!flock($h, LOCK_EX | LOCK_NB)) {
                        continue 2;
                    }
                    if (isset($this->lockHandles[$pipe])) {
                        flock($this->lockHandles[$pipe], LOCK_UN);
                        fclose($this->lockHandles[$pipe]);
                    }
                    $this->lockHandles[$pipe] = $h;

                    if (!fclose(fopen($file, 'w')) || !$h = fopen($file, 'r')) {
                        flock($this->lockHandles[$pipe], LOCK_UN);
                        fclose($this->lockHandles[$pipe]);
                        unset($this->lockHandles[$pipe]);
                        continue 2;
                    }
                    $this->fileHandles[$pipe] = $h;
                    $this->files[$pipe] = $file;
                }
                break;
            }
            restore_error_handler();
        }

        parent::__construct($input);
    }

    public function __destruct()
    {
        $this->close();
    }

    /**
     * {@inheritdoc}
     */
    public function getDescriptors()
    {
        if (!$this->haveReadSupport) {
            $nullstream = fopen('NUL', 'c');

            return [
                ['pipe', 'r'],
                $nullstream,
                $nullstream,
            ];
        }

        // We're not using pipe on Windows platform as it hangs (https://bugs.php.net/51800)
        // We're not using file handles as it can produce corrupted output https://bugs.php.net/65650
        // So we redirect output within the commandline and pass the nul device to the process
        return [
            ['pipe', 'r'],
            ['file', 'NUL', 'w'],
            ['file', 'NUL', 'w'],
        ];
    }

    /**
     * {@inheritdoc}
     */
    public function getFiles()
    {
        return $this->files;
    }

    /**
     * {@inheritdoc}
     */
    public function readAndWrite($blocking, $close = false)
    {
        $this->unblock();
        $w = $this->write();
        $read = $r = $e = [];

        if ($blocking) {
            if ($w) {
                @stream_select($r, $w, $e, 0, Process::TIMEOUT_PRECISION * 1E6);
            } elseif ($this->fileHandles) {
                usleep(Process::TIMEOUT_PRECISION * 1E6);
            }
        }
        foreach ($this->fileHandles as $type => $fileHandle) {
            $data = stream_get_contents($fileHandle, -1, $this->readBytes[$type]);

            if (isset($data[0])) {
                $this->readBytes[$type] += \strlen($data);
                $read[$type] = $data;
            }
            if ($close) {
                ftruncate($fileHandle, 0);
                fclose($fileHandle);
                flock($this->lockHandles[$type], LOCK_UN);
                fclose($this->lockHandles[$type]);
                unset($this->fileHandles[$type], $this->lockHandles[$type]);
            }
        }

        return $read;
    }

    /**
     * {@inheritdoc}
     */
    public function haveReadSupport()
    {
        return $this->haveReadSupport;
    }

    /**
     * {@inheritdoc}
     */
    public function areOpen()
    {
        return $this->pipes && $this->fileHandles;
    }

    /**
     * {@inheritdoc}
     */
    public function close()
    {
        parent::close();
        foreach ($this->fileHandles as $type => $handle) {
            ftruncate($handle, 0);
            fclose($handle);
            flock($this->lockHandles[$type], LOCK_UN);
            fclose($this->lockHandles[$type]);
        }
        $this->fileHandles = $this->lockHandles = [];
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Process\Pipes;

use Symfony\Component\Process\Exception\InvalidArgumentException;

/**
 * @author Romain Neutron <imprec@gmail.com>
 *
 * @internal
 */
abstract class AbstractPipes implements PipesInterface
{
    public $pipes = [];

    private $inputBuffer = '';
    private $input;
    private $blocked = true;
    private $lastError;

    /**
     * @param resource|string|int|float|bool|\Iterator|null $input
     */
    public function __construct($input)
    {
        if (\is_resource($input) || $input instanceof \Iterator) {
            $this->input = $input;
        } elseif (\is_string($input)) {
            $this->inputBuffer = $input;
        } else {
            $this->inputBuffer = (string) $input;
        }
    }

    /**
     * {@inheritdoc}
     */
    public function close()
    {
        foreach ($this->pipes as $pipe) {
            fclose($pipe);
        }
        $this->pipes = [];
    }

    /**
     * Returns true if a system call has been interrupted.
     *
     * @return bool
     */
    protected function hasSystemCallBeenInterrupted()
    {
        $lastError = $this->lastError;
        $this->lastError = null;

        // stream_select returns false when the `select` system call is interrupted by an incoming signal
        return null !== $lastError && false !== stripos($lastError, 'interrupted system call');
    }

    /**
     * Unblocks streams.
     */
    protected function unblock()
    {
        if (!$this->blocked) {
            return;
        }

        foreach ($this->pipes as $pipe) {
            stream_set_blocking($pipe, 0);
        }
        if (\is_resource($this->input)) {
            stream_set_blocking($this->input, 0);
        }

        $this->blocked = false;
    }

    /**
     * Writes input to stdin.
     *
     * @return array|null
     *
     * @throws InvalidArgumentException When an input iterator yields a non supported value
     */
    protected function write()
    {
        if (!isset($this->pipes[0])) {
            return null;
        }
        $input = $this->input;

        if ($input instanceof \Iterator) {
            if (!$input->valid()) {
                $input = null;
            } elseif (\is_resource($input = $input->current())) {
                stream_set_blocking($input, 0);
            } elseif (!isset($this->inputBuffer[0])) {
                if (!\is_string($input)) {
                    if (!is_scalar($input)) {
                        throw new InvalidArgumentException(sprintf('%s yielded a value of type "%s", but only scalars and stream resources are supported', \get_class($this->input), \gettype($input)));
                    }
                    $input = (string) $input;
                }
                $this->inputBuffer = $input;
                $this->input->next();
                $input = null;
            } else {
                $input = null;
            }
        }

        $r = $e = [];
        $w = [$this->pipes[0]];

        // let's have a look if something changed in streams
        if (false === @stream_select($r, $w, $e, 0, 0)) {
            return null;
        }

        foreach ($w as $stdin) {
            if (isset($this->inputBuffer[0])) {
                $written = fwrite($stdin, $this->inputBuffer);
                $this->inputBuffer = substr($this->inputBuffer, $written);
                if (isset($this->inputBuffer[0])) {
                    return [$this->pipes[0]];
                }
            }

            if ($input) {
                for (;;) {
                    $data = fread($input, self::CHUNK_SIZE);
                    if (!isset($data[0])) {
                        break;
                    }
                    $written = fwrite($stdin, $data);
                    $data = substr($data, $written);
                    if (isset($data[0])) {
                        $this->inputBuffer = $data;

                        return [$this->pipes[0]];
                    }
                }
                if (feof($input)) {
                    if ($this->input instanceof \Iterator) {
                        $this->input->next();
                    } else {
                        $this->input = null;
                    }
                }
            }
        }

        // no input to read on resource, buffer is empty
        if (!isset($this->inputBuffer[0]) && !($this->input instanceof \Iterator ? $this->input->valid() : $this->input)) {
            $this->input = null;
            fclose($this->pipes[0]);
            unset($this->pipes[0]);
        } elseif (!$w) {
            return [$this->pipes[0]];
        }

        return null;
    }

    /**
     * @internal
     */
    public function handleError($type, $msg)
    {
        $this->lastError = $msg;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Process\Pipes;

/**
 * PipesInterface manages descriptors and pipes for the use of proc_open.
 *
 * @author Romain Neutron <imprec@gmail.com>
 *
 * @internal
 */
interface PipesInterface
{
    const CHUNK_SIZE = 16384;

    /**
     * Returns an array of descriptors for the use of proc_open.
     *
     * @return array
     */
    public function getDescriptors();

    /**
     * Returns an array of filenames indexed by their related stream in case these pipes use temporary files.
     *
     * @return string[]
     */
    public function getFiles();

    /**
     * Reads data in file handles and pipes.
     *
     * @param bool $blocking Whether to use blocking calls or not
     * @param bool $close    Whether to close pipes if they've reached EOF
     *
     * @return string[] An array of read data indexed by their fd
     */
    public function readAndWrite($blocking, $close = false);

    /**
     * Returns if the current state has open file handles or pipes.
     *
     * @return bool
     */
    public function areOpen();

    /**
     * Returns if pipes are able to read output.
     *
     * @return bool
     */
    public function haveReadSupport();

    /**
     * Closes file handles and pipes.
     */
    public function close();
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Process;

use Symfony\Component\Process\Exception\RuntimeException;

/**
 * Provides a way to continuously write to the input of a Process until the InputStream is closed.
 *
 * @author Nicolas Grekas <p@tchwork.com>
 */
class InputStream implements \IteratorAggregate
{
    /** @var callable|null */
    private $onEmpty = null;
    private $input = [];
    private $open = true;

    /**
     * Sets a callback that is called when the write buffer becomes empty.
     */
    public function onEmpty(callable $onEmpty = null)
    {
        $this->onEmpty = $onEmpty;
    }

    /**
     * Appends an input to the write buffer.
     *
     * @param resource|string|int|float|bool|\Traversable|null $input The input to append as scalar,
     *                                                                stream resource or \Traversable
     */
    public function write($input)
    {
        if (null === $input) {
            return;
        }
        if ($this->isClosed()) {
            throw new RuntimeException(sprintf('%s is closed', static::class));
        }
        $this->input[] = ProcessUtils::validateInput(__METHOD__, $input);
    }

    /**
     * Closes the write buffer.
     */
    public function close()
    {
        $this->open = false;
    }

    /**
     * Tells whether the write buffer is closed or not.
     */
    public function isClosed()
    {
        return !$this->open;
    }

    public function getIterator()
    {
        $this->open = true;

        while ($this->open || $this->input) {
            if (!$this->input) {
                yield '';
                continue;
            }
            $current = array_shift($this->input);

            if ($current instanceof \Iterator) {
                foreach ($current as $cur) {
                    yield $cur;
                }
            } else {
                yield $current;
            }
            if (!$this->input && $this->open && null !== $onEmpty = $this->onEmpty) {
                $this->write($onEmpty($this));
            }
        }
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Process;

use Symfony\Component\Process\Exception\RuntimeException;

/**
 * PhpProcess runs a PHP script in an independent process.
 *
 *     $p = new PhpProcess('<?php echo "foo"; ?>');
 *     $p->run();
 *     print $p->getOutput()."\n";
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class PhpProcess extends Process
{
    /**
     * @param string      $script  The PHP script to run (as a string)
     * @param string|null $cwd     The working directory or null to use the working dir of the current PHP process
     * @param array|null  $env     The environment variables or null to use the same environment as the current PHP process
     * @param int         $timeout The timeout in seconds
     * @param array       $options An array of options for proc_open
     */
    public function __construct($script, $cwd = null, array $env = null, $timeout = 60, array $options = null)
    {
        $executableFinder = new PhpExecutableFinder();
        if (false === $php = $executableFinder->find(false)) {
            $php = null;
        } else {
            $php = array_merge([$php], $executableFinder->findArguments());
        }
        if ('phpdbg' === \PHP_SAPI) {
            $file = tempnam(sys_get_temp_dir(), 'dbg');
            file_put_contents($file, $script);
            register_shutdown_function('unlink', $file);
            $php[] = $file;
            $script = null;
        }
        if (null !== $options) {
            @trigger_error(sprintf('The $options parameter of the %s constructor is deprecated since Symfony 3.3 and will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
        }

        parent::__construct($php, $cwd, $env, $script, $timeout, $options);
    }

    /**
     * Sets the path to the PHP binary to use.
     */
    public function setPhpBinary($php)
    {
        $this->setCommandLine($php);
    }

    /**
     * {@inheritdoc}
     */
    public function start(callable $callback = null/*, array $env = []*/)
    {
        if (null === $this->getCommandLine()) {
            throw new RuntimeException('Unable to find the PHP executable.');
        }
        $env = 1 < \func_num_args() ? func_get_arg(1) : null;

        parent::start($callback, $env);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Process;

/**
 * An executable finder specifically designed for the PHP executable.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Johannes M. Schmitt <schmittjoh@gmail.com>
 */
class PhpExecutableFinder
{
    private $executableFinder;

    public function __construct()
    {
        $this->executableFinder = new ExecutableFinder();
    }

    /**
     * Finds The PHP executable.
     *
     * @param bool $includeArgs Whether or not include command arguments
     *
     * @return string|false The PHP executable path or false if it cannot be found
     */
    public function find($includeArgs = true)
    {
        $args = $this->findArguments();
        $args = $includeArgs && $args ? ' '.implode(' ', $args) : '';

        // HHVM support
        if (\defined('HHVM_VERSION')) {
            return (getenv('PHP_BINARY') ?: PHP_BINARY).$args;
        }

        // PHP_BINARY return the current sapi executable
        if (PHP_BINARY && \in_array(\PHP_SAPI, ['cli', 'cli-server', 'phpdbg'], true)) {
            return PHP_BINARY.$args;
        }

        if ($php = getenv('PHP_PATH')) {
            if (!@is_executable($php)) {
                return false;
            }

            return $php;
        }

        if ($php = getenv('PHP_PEAR_PHP_BIN')) {
            if (@is_executable($php)) {
                return $php;
            }
        }

        if (@is_executable($php = PHP_BINDIR.('\\' === \DIRECTORY_SEPARATOR ? '\\php.exe' : '/php'))) {
            return $php;
        }

        $dirs = [PHP_BINDIR];
        if ('\\' === \DIRECTORY_SEPARATOR) {
            $dirs[] = 'C:\xampp\php\\';
        }

        return $this->executableFinder->find('php', false, $dirs);
    }

    /**
     * Finds the PHP executable arguments.
     *
     * @return array The PHP executable arguments
     */
    public function findArguments()
    {
        $arguments = [];

        if (\defined('HHVM_VERSION')) {
            $arguments[] = '--php';
        } elseif ('phpdbg' === \PHP_SAPI) {
            $arguments[] = '-qrr';
        }

        return $arguments;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Process\Exception;

/**
 * LogicException for the Process Component.
 *
 * @author Romain Neutron <imprec@gmail.com>
 */
class LogicException extends \LogicException implements ExceptionInterface
{
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Process\Exception;

/**
 * Marker Interface for the Process Component.
 *
 * @author Johannes M. Schmitt <schmittjoh@gmail.com>
 */
interface ExceptionInterface
{
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Process\Exception;

use Symfony\Component\Process\Process;

/**
 * Exception for failed processes.
 *
 * @author Johannes M. Schmitt <schmittjoh@gmail.com>
 */
class ProcessFailedException extends RuntimeException
{
    private $process;

    public function __construct(Process $process)
    {
        if ($process->isSuccessful()) {
            throw new InvalidArgumentException('Expected a failed process, but the given process was successful.');
        }

        $error = sprintf('The command "%s" failed.'."\n\nExit Code: %s(%s)\n\nWorking directory: %s",
            $process->getCommandLine(),
            $process->getExitCode(),
            $process->getExitCodeText(),
            $process->getWorkingDirectory()
        );

        if (!$process->isOutputDisabled()) {
            $error .= sprintf("\n\nOutput:\n================\n%s\n\nError Output:\n================\n%s",
                $process->getOutput(),
                $process->getErrorOutput()
            );
        }

        parent::__construct($error);

        $this->process = $process;
    }

    public function getProcess()
    {
        return $this->process;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Process\Exception;

/**
 * RuntimeException for the Process Component.
 *
 * @author Johannes M. Schmitt <schmittjoh@gmail.com>
 */
class RuntimeException extends \RuntimeException implements ExceptionInterface
{
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Process\Exception;

use Symfony\Component\Process\Process;

/**
 * Exception that is thrown when a process times out.
 *
 * @author Johannes M. Schmitt <schmittjoh@gmail.com>
 */
class ProcessTimedOutException extends RuntimeException
{
    const TYPE_GENERAL = 1;
    const TYPE_IDLE = 2;

    private $process;
    private $timeoutType;

    public function __construct(Process $process, $timeoutType)
    {
        $this->process = $process;
        $this->timeoutType = $timeoutType;

        parent::__construct(sprintf(
            'The process "%s" exceeded the timeout of %s seconds.',
            $process->getCommandLine(),
            $this->getExceededTimeout()
        ));
    }

    public function getProcess()
    {
        return $this->process;
    }

    public function isGeneralTimeout()
    {
        return self::TYPE_GENERAL === $this->timeoutType;
    }

    public function isIdleTimeout()
    {
        return self::TYPE_IDLE === $this->timeoutType;
    }

    public function getExceededTimeout()
    {
        switch ($this->timeoutType) {
            case self::TYPE_GENERAL:
                return $this->process->getTimeout();

            case self::TYPE_IDLE:
                return $this->process->getIdleTimeout();

            default:
                throw new \LogicException(sprintf('Unknown timeout type "%d".', $this->timeoutType));
        }
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Process\Exception;

/**
 * InvalidArgumentException for the Process Component.
 *
 * @author Romain Neutron <imprec@gmail.com>
 */
class InvalidArgumentException extends \InvalidArgumentException implements ExceptionInterface
{
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Process;

use Symfony\Component\Process\Exception\InvalidArgumentException;

/**
 * ProcessUtils is a bunch of utility methods.
 *
 * This class contains static methods only and is not meant to be instantiated.
 *
 * @author Martin HasoÅˆ <martin.hason@gmail.com>
 */
class ProcessUtils
{
    /**
     * This class should not be instantiated.
     */
    private function __construct()
    {
    }

    /**
     * Escapes a string to be used as a shell argument.
     *
     * @param string $argument The argument that will be escaped
     *
     * @return string The escaped argument
     *
     * @deprecated since version 3.3, to be removed in 4.0. Use a command line array or give env vars to the `Process::start/run()` method instead.
     */
    public static function escapeArgument($argument)
    {
        @trigger_error('The '.__METHOD__.'() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use a command line array or give env vars to the Process::start/run() method instead.', E_USER_DEPRECATED);

        //Fix for PHP bug #43784 escapeshellarg removes % from given string
        //Fix for PHP bug #49446 escapeshellarg doesn't work on Windows
        //@see https://bugs.php.net/43784
        //@see https://bugs.php.net/49446
        if ('\\' === \DIRECTORY_SEPARATOR) {
            if ('' === $argument) {
                return escapeshellarg($argument);
            }

            $escapedArgument = '';
            $quote = false;
            foreach (preg_split('/(")/', $argument, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE) as $part) {
                if ('"' === $part) {
                    $escapedArgument .= '\\"';
                } elseif (self::isSurroundedBy($part, '%')) {
                    // Avoid environment variable expansion
                    $escapedArgument .= '^%"'.substr($part, 1, -1).'"^%';
                } else {
                    // escape trailing backslash
                    if ('\\' === substr($part, -1)) {
                        $part .= '\\';
                    }
                    $quote = true;
                    $escapedArgument .= $part;
                }
            }
            if ($quote) {
                $escapedArgument = '"'.$escapedArgument.'"';
            }

            return $escapedArgument;
        }

        return "'".str_replace("'", "'\\''", $argument)."'";
    }

    /**
     * Validates and normalizes a Process input.
     *
     * @param string $caller The name of method call that validates the input
     * @param mixed  $input  The input to validate
     *
     * @return mixed The validated input
     *
     * @throws InvalidArgumentException In case the input is not valid
     */
    public static function validateInput($caller, $input)
    {
        if (null !== $input) {
            if (\is_resource($input)) {
                return $input;
            }
            if (\is_string($input)) {
                return $input;
            }
            if (is_scalar($input)) {
                return (string) $input;
            }
            if ($input instanceof Process) {
                return $input->getIterator($input::ITER_SKIP_ERR);
            }
            if ($input instanceof \Iterator) {
                return $input;
            }
            if ($input instanceof \Traversable) {
                return new \IteratorIterator($input);
            }

            throw new InvalidArgumentException(sprintf('%s only accepts strings, Traversable objects or stream resources.', $caller));
        }

        return $input;
    }

    private static function isSurroundedBy($arg, $char)
    {
        return 2 < \strlen($arg) && $char === $arg[0] && $char === $arg[\strlen($arg) - 1];
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Process;

use Symfony\Component\Process\Exception\InvalidArgumentException;
use Symfony\Component\Process\Exception\LogicException;
use Symfony\Component\Process\Exception\ProcessFailedException;
use Symfony\Component\Process\Exception\ProcessTimedOutException;
use Symfony\Component\Process\Exception\RuntimeException;
use Symfony\Component\Process\Pipes\PipesInterface;
use Symfony\Component\Process\Pipes\UnixPipes;
use Symfony\Component\Process\Pipes\WindowsPipes;

/**
 * Process is a thin wrapper around proc_* functions to easily
 * start independent PHP processes.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Romain Neutron <imprec@gmail.com>
 */
class Process implements \IteratorAggregate
{
    const ERR = 'err';
    const OUT = 'out';

    const STATUS_READY = 'ready';
    const STATUS_STARTED = 'started';
    const STATUS_TERMINATED = 'terminated';

    const STDIN = 0;
    const STDOUT = 1;
    const STDERR = 2;

    // Timeout Precision in seconds.
    const TIMEOUT_PRECISION = 0.2;

    const ITER_NON_BLOCKING = 1; // By default, iterating over outputs is a blocking call, use this flag to make it non-blocking
    const ITER_KEEP_OUTPUT = 2;  // By default, outputs are cleared while iterating, use this flag to keep them in memory
    const ITER_SKIP_OUT = 4;     // Use this flag to skip STDOUT while iterating
    const ITER_SKIP_ERR = 8;     // Use this flag to skip STDERR while iterating

    private $callback;
    private $hasCallback = false;
    private $commandline;
    private $cwd;
    private $env;
    private $input;
    private $starttime;
    private $lastOutputTime;
    private $timeout;
    private $idleTimeout;
    private $options = ['suppress_errors' => true];
    private $exitcode;
    private $fallbackStatus = [];
    private $processInformation;
    private $outputDisabled = false;
    private $stdout;
    private $stderr;
    private $enhanceWindowsCompatibility = true;
    private $enhanceSigchildCompatibility;
    private $process;
    private $status = self::STATUS_READY;
    private $incrementalOutputOffset = 0;
    private $incrementalErrorOutputOffset = 0;
    private $tty = false;
    private $pty;
    private $inheritEnv = false;

    private $useFileHandles = false;
    /** @var PipesInterface */
    private $processPipes;

    private $latestSignal;

    private static $sigchild;

    /**
     * Exit codes translation table.
     *
     * User-defined errors must use exit codes in the 64-113 range.
     */
    public static $exitCodes = [
        0 => 'OK',
        1 => 'General error',
        2 => 'Misuse of shell builtins',

        126 => 'Invoked command cannot execute',
        127 => 'Command not found',
        128 => 'Invalid exit argument',

        // signals
        129 => 'Hangup',
        130 => 'Interrupt',
        131 => 'Quit and dump core',
        132 => 'Illegal instruction',
        133 => 'Trace/breakpoint trap',
        134 => 'Process aborted',
        135 => 'Bus error: "access to undefined portion of memory object"',
        136 => 'Floating point exception: "erroneous arithmetic operation"',
        137 => 'Kill (terminate immediately)',
        138 => 'User-defined 1',
        139 => 'Segmentation violation',
        140 => 'User-defined 2',
        141 => 'Write to pipe with no one reading',
        142 => 'Signal raised by alarm',
        143 => 'Termination (request to terminate)',
        // 144 - not defined
        145 => 'Child process terminated, stopped (or continued*)',
        146 => 'Continue if stopped',
        147 => 'Stop executing temporarily',
        148 => 'Terminal stop signal',
        149 => 'Background process attempting to read from tty ("in")',
        150 => 'Background process attempting to write to tty ("out")',
        151 => 'Urgent data available on socket',
        152 => 'CPU time limit exceeded',
        153 => 'File size limit exceeded',
        154 => 'Signal raised by timer counting virtual time: "virtual timer expired"',
        155 => 'Profiling timer expired',
        // 156 - not defined
        157 => 'Pollable event',
        // 158 - not defined
        159 => 'Bad syscall',
    ];

    /**
     * @param string|array   $commandline The command line to run
     * @param string|null    $cwd         The working directory or null to use the working dir of the current PHP process
     * @param array|null     $env         The environment variables or null to use the same environment as the current PHP process
     * @param mixed|null     $input       The input as stream resource, scalar or \Traversable, or null for no input
     * @param int|float|null $timeout     The timeout in seconds or null to disable
     * @param array          $options     An array of options for proc_open
     *
     * @throws RuntimeException When proc_open is not installed
     */
    public function __construct($commandline, $cwd = null, array $env = null, $input = null, $timeout = 60, array $options = null)
    {
        if (!\function_exists('proc_open')) {
            throw new RuntimeException('The Process class relies on proc_open, which is not available on your PHP installation.');
        }

        $this->commandline = $commandline;
        $this->cwd = $cwd;

        // on Windows, if the cwd changed via chdir(), proc_open defaults to the dir where PHP was started
        // on Gnu/Linux, PHP builds with --enable-maintainer-zts are also affected
        // @see : https://bugs.php.net/51800
        // @see : https://bugs.php.net/50524
        if (null === $this->cwd && (\defined('ZEND_THREAD_SAFE') || '\\' === \DIRECTORY_SEPARATOR)) {
            $this->cwd = getcwd();
        }
        if (null !== $env) {
            $this->setEnv($env);
        }

        $this->setInput($input);
        $this->setTimeout($timeout);
        $this->useFileHandles = '\\' === \DIRECTORY_SEPARATOR;
        $this->pty = false;
        $this->enhanceSigchildCompatibility = '\\' !== \DIRECTORY_SEPARATOR && $this->isSigchildEnabled();
        if (null !== $options) {
            @trigger_error(sprintf('The $options parameter of the %s constructor is deprecated since Symfony 3.3 and will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
            $this->options = array_replace($this->options, $options);
        }
    }

    public function __destruct()
    {
        $this->stop(0);
    }

    public function __clone()
    {
        $this->resetProcessData();
    }

    /**
     * Runs the process.
     *
     * The callback receives the type of output (out or err) and
     * some bytes from the output in real-time. It allows to have feedback
     * from the independent process during execution.
     *
     * The STDOUT and STDERR are also available after the process is finished
     * via the getOutput() and getErrorOutput() methods.
     *
     * @param callable|null $callback A PHP callback to run whenever there is some
     *                                output available on STDOUT or STDERR
     *
     * @return int The exit status code
     *
     * @throws RuntimeException When process can't be launched
     * @throws RuntimeException When process stopped after receiving signal
     * @throws LogicException   In case a callback is provided and output has been disabled
     *
     * @final since version 3.3
     */
    public function run($callback = null/*, array $env = []*/)
    {
        $env = 1 < \func_num_args() ? func_get_arg(1) : null;
        $this->start($callback, $env);

        return $this->wait();
    }

    /**
     * Runs the process.
     *
     * This is identical to run() except that an exception is thrown if the process
     * exits with a non-zero exit code.
     *
     * @return $this
     *
     * @throws RuntimeException       if PHP was compiled with --enable-sigchild and the enhanced sigchild compatibility mode is not enabled
     * @throws ProcessFailedException if the process didn't terminate successfully
     *
     * @final since version 3.3
     */
    public function mustRun(callable $callback = null/*, array $env = []*/)
    {
        if (!$this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) {
            throw new RuntimeException('This PHP has been compiled with --enable-sigchild. You must use setEnhanceSigchildCompatibility() to use this method.');
        }
        $env = 1 < \func_num_args() ? func_get_arg(1) : null;

        if (0 !== $this->run($callback, $env)) {
            throw new ProcessFailedException($this);
        }

        return $this;
    }

    /**
     * Starts the process and returns after writing the input to STDIN.
     *
     * This method blocks until all STDIN data is sent to the process then it
     * returns while the process runs in the background.
     *
     * The termination of the process can be awaited with wait().
     *
     * The callback receives the type of output (out or err) and some bytes from
     * the output in real-time while writing the standard input to the process.
     * It allows to have feedback from the independent process during execution.
     *
     * @param callable|null $callback A PHP callback to run whenever there is some
     *                                output available on STDOUT or STDERR
     *
     * @throws RuntimeException When process can't be launched
     * @throws RuntimeException When process is already running
     * @throws LogicException   In case a callback is provided and output has been disabled
     */
    public function start(callable $callback = null/*, array $env = [*/)
    {
        if ($this->isRunning()) {
            throw new RuntimeException('Process is already running');
        }
        if (2 <= \func_num_args()) {
            $env = func_get_arg(1);
        } else {
            if (__CLASS__ !== static::class) {
                $r = new \ReflectionMethod($this, __FUNCTION__);
                if (__CLASS__ !== $r->getDeclaringClass()->getName() && (2 > $r->getNumberOfParameters() || 'env' !== $r->getParameters()[1]->name)) {
                    @trigger_error(sprintf('The %s::start() method expects a second "$env" argument since Symfony 3.3. It will be made mandatory in 4.0.', static::class), E_USER_DEPRECATED);
                }
            }
            $env = null;
        }

        $this->resetProcessData();
        $this->starttime = $this->lastOutputTime = microtime(true);
        $this->callback = $this->buildCallback($callback);
        $this->hasCallback = null !== $callback;
        $descriptors = $this->getDescriptors();
        $inheritEnv = $this->inheritEnv;

        if (\is_array($commandline = $this->commandline)) {
            $commandline = implode(' ', array_map([$this, 'escapeArgument'], $commandline));

            if ('\\' !== \DIRECTORY_SEPARATOR) {
                // exec is mandatory to deal with sending a signal to the process
                $commandline = 'exec '.$commandline;
            }
        }

        if (null === $env) {
            $env = $this->env;
        } else {
            if ($this->env) {
                $env += $this->env;
            }
            $inheritEnv = true;
        }

        if (null !== $env && $inheritEnv) {
            $env += $this->getDefaultEnv();
        } elseif (null !== $env) {
            @trigger_error('Not inheriting environment variables is deprecated since Symfony 3.3 and will always happen in 4.0. Set "Process::inheritEnvironmentVariables()" to true instead.', E_USER_DEPRECATED);
        } else {
            $env = $this->getDefaultEnv();
        }
        if ('\\' === \DIRECTORY_SEPARATOR && $this->enhanceWindowsCompatibility) {
            $this->options['bypass_shell'] = true;
            $commandline = $this->prepareWindowsCommandLine($commandline, $env);
        } elseif (!$this->useFileHandles && $this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) {
            // last exit code is output on the fourth pipe and caught to work around --enable-sigchild
            $descriptors[3] = ['pipe', 'w'];

            // See https://unix.stackexchange.com/questions/71205/background-process-pipe-input
            $commandline = '{ ('.$commandline.') <&3 3<&- 3>/dev/null & } 3<&0;';
            $commandline .= 'pid=$!; echo $pid >&3; wait $pid; code=$?; echo $code >&3; exit $code';

            // Workaround for the bug, when PTS functionality is enabled.
            // @see : https://bugs.php.net/69442
            $ptsWorkaround = fopen(__FILE__, 'r');
        }
        if (\defined('HHVM_VERSION')) {
            $envPairs = $env;
        } else {
            $envPairs = [];
            foreach ($env as $k => $v) {
                if (false !== $v) {
                    $envPairs[] = $k.'='.$v;
                }
            }
        }

        if (!is_dir($this->cwd)) {
            @trigger_error('The provided cwd does not exist. Command is currently ran against getcwd(). This behavior is deprecated since Symfony 3.4 and will be removed in 4.0.', E_USER_DEPRECATED);
        }

        $this->process = proc_open($commandline, $descriptors, $this->processPipes->pipes, $this->cwd, $envPairs, $this->options);

        if (!\is_resource($this->process)) {
            throw new RuntimeException('Unable to launch a new process.');
        }
        $this->status = self::STATUS_STARTED;

        if (isset($descriptors[3])) {
            $this->fallbackStatus['pid'] = (int) fgets($this->processPipes->pipes[3]);
        }

        if ($this->tty) {
            return;
        }

        $this->updateStatus(false);
        $this->checkTimeout();
    }

    /**
     * Restarts the process.
     *
     * Be warned that the process is cloned before being started.
     *
     * @param callable|null $callback A PHP callback to run whenever there is some
     *                                output available on STDOUT or STDERR
     *
     * @return static
     *
     * @throws RuntimeException When process can't be launched
     * @throws RuntimeException When process is already running
     *
     * @see start()
     *
     * @final since version 3.3
     */
    public function restart(callable $callback = null/*, array $env = []*/)
    {
        if ($this->isRunning()) {
            throw new RuntimeException('Process is already running');
        }
        $env = 1 < \func_num_args() ? func_get_arg(1) : null;

        $process = clone $this;
        $process->start($callback, $env);

        return $process;
    }

    /**
     * Waits for the process to terminate.
     *
     * The callback receives the type of output (out or err) and some bytes
     * from the output in real-time while writing the standard input to the process.
     * It allows to have feedback from the independent process during execution.
     *
     * @param callable|null $callback A valid PHP callback
     *
     * @return int The exitcode of the process
     *
     * @throws RuntimeException When process timed out
     * @throws RuntimeException When process stopped after receiving signal
     * @throws LogicException   When process is not yet started
     */
    public function wait(callable $callback = null)
    {
        $this->requireProcessIsStarted(__FUNCTION__);

        $this->updateStatus(false);

        if (null !== $callback) {
            if (!$this->processPipes->haveReadSupport()) {
                $this->stop(0);
                throw new \LogicException('Pass the callback to the Process::start method or enableOutput to use a callback with Process::wait');
            }
            $this->callback = $this->buildCallback($callback);
        }

        do {
            $this->checkTimeout();
            $running = '\\' === \DIRECTORY_SEPARATOR ? $this->isRunning() : $this->processPipes->areOpen();
            $this->readPipes($running, '\\' !== \DIRECTORY_SEPARATOR || !$running);
        } while ($running);

        while ($this->isRunning()) {
            $this->checkTimeout();
            usleep(1000);
        }

        if ($this->processInformation['signaled'] && $this->processInformation['termsig'] !== $this->latestSignal) {
            throw new RuntimeException(sprintf('The process has been signaled with signal "%s".', $this->processInformation['termsig']));
        }

        return $this->exitcode;
    }

    /**
     * Returns the Pid (process identifier), if applicable.
     *
     * @return int|null The process id if running, null otherwise
     */
    public function getPid()
    {
        return $this->isRunning() ? $this->processInformation['pid'] : null;
    }

    /**
     * Sends a POSIX signal to the process.
     *
     * @param int $signal A valid POSIX signal (see https://php.net/pcntl.constants)
     *
     * @return $this
     *
     * @throws LogicException   In case the process is not running
     * @throws RuntimeException In case --enable-sigchild is activated and the process can't be killed
     * @throws RuntimeException In case of failure
     */
    public function signal($signal)
    {
        $this->doSignal($signal, true);

        return $this;
    }

    /**
     * Disables fetching output and error output from the underlying process.
     *
     * @return $this
     *
     * @throws RuntimeException In case the process is already running
     * @throws LogicException   if an idle timeout is set
     */
    public function disableOutput()
    {
        if ($this->isRunning()) {
            throw new RuntimeException('Disabling output while the process is running is not possible.');
        }
        if (null !== $this->idleTimeout) {
            throw new LogicException('Output can not be disabled while an idle timeout is set.');
        }

        $this->outputDisabled = true;

        return $this;
    }

    /**
     * Enables fetching output and error output from the underlying process.
     *
     * @return $this
     *
     * @throws RuntimeException In case the process is already running
     */
    public function enableOutput()
    {
        if ($this->isRunning()) {
            throw new RuntimeException('Enabling output while the process is running is not possible.');
        }

        $this->outputDisabled = false;

        return $this;
    }

    /**
     * Returns true in case the output is disabled, false otherwise.
     *
     * @return bool
     */
    public function isOutputDisabled()
    {
        return $this->outputDisabled;
    }

    /**
     * Returns the current output of the process (STDOUT).
     *
     * @return string The process output
     *
     * @throws LogicException in case the output has been disabled
     * @throws LogicException In case the process is not started
     */
    public function getOutput()
    {
        $this->readPipesForOutput(__FUNCTION__);

        if (false === $ret = stream_get_contents($this->stdout, -1, 0)) {
            return '';
        }

        return $ret;
    }

    /**
     * Returns the output incrementally.
     *
     * In comparison with the getOutput method which always return the whole
     * output, this one returns the new output since the last call.
     *
     * @return string The process output since the last call
     *
     * @throws LogicException in case the output has been disabled
     * @throws LogicException In case the process is not started
     */
    public function getIncrementalOutput()
    {
        $this->readPipesForOutput(__FUNCTION__);

        $latest = stream_get_contents($this->stdout, -1, $this->incrementalOutputOffset);
        $this->incrementalOutputOffset = ftell($this->stdout);

        if (false === $latest) {
            return '';
        }

        return $latest;
    }

    /**
     * Returns an iterator to the output of the process, with the output type as keys (Process::OUT/ERR).
     *
     * @param int $flags A bit field of Process::ITER_* flags
     *
     * @throws LogicException in case the output has been disabled
     * @throws LogicException In case the process is not started
     *
     * @return \Generator
     */
    public function getIterator($flags = 0)
    {
        $this->readPipesForOutput(__FUNCTION__, false);

        $clearOutput = !(self::ITER_KEEP_OUTPUT & $flags);
        $blocking = !(self::ITER_NON_BLOCKING & $flags);
        $yieldOut = !(self::ITER_SKIP_OUT & $flags);
        $yieldErr = !(self::ITER_SKIP_ERR & $flags);

        while (null !== $this->callback || ($yieldOut && !feof($this->stdout)) || ($yieldErr && !feof($this->stderr))) {
            if ($yieldOut) {
                $out = stream_get_contents($this->stdout, -1, $this->incrementalOutputOffset);

                if (isset($out[0])) {
                    if ($clearOutput) {
                        $this->clearOutput();
                    } else {
                        $this->incrementalOutputOffset = ftell($this->stdout);
                    }

                    yield self::OUT => $out;
                }
            }

            if ($yieldErr) {
                $err = stream_get_contents($this->stderr, -1, $this->incrementalErrorOutputOffset);

                if (isset($err[0])) {
                    if ($clearOutput) {
                        $this->clearErrorOutput();
                    } else {
                        $this->incrementalErrorOutputOffset = ftell($this->stderr);
                    }

                    yield self::ERR => $err;
                }
            }

            if (!$blocking && !isset($out[0]) && !isset($err[0])) {
                yield self::OUT => '';
            }

            $this->checkTimeout();
            $this->readPipesForOutput(__FUNCTION__, $blocking);
        }
    }

    /**
     * Clears the process output.
     *
     * @return $this
     */
    public function clearOutput()
    {
        ftruncate($this->stdout, 0);
        fseek($this->stdout, 0);
        $this->incrementalOutputOffset = 0;

        return $this;
    }

    /**
     * Returns the current error output of the process (STDERR).
     *
     * @return string The process error output
     *
     * @throws LogicException in case the output has been disabled
     * @throws LogicException In case the process is not started
     */
    public function getErrorOutput()
    {
        $this->readPipesForOutput(__FUNCTION__);

        if (false === $ret = stream_get_contents($this->stderr, -1, 0)) {
            return '';
        }

        return $ret;
    }

    /**
     * Returns the errorOutput incrementally.
     *
     * In comparison with the getErrorOutput method which always return the
     * whole error output, this one returns the new error output since the last
     * call.
     *
     * @return string The process error output since the last call
     *
     * @throws LogicException in case the output has been disabled
     * @throws LogicException In case the process is not started
     */
    public function getIncrementalErrorOutput()
    {
        $this->readPipesForOutput(__FUNCTION__);

        $latest = stream_get_contents($this->stderr, -1, $this->incrementalErrorOutputOffset);
        $this->incrementalErrorOutputOffset = ftell($this->stderr);

        if (false === $latest) {
            return '';
        }

        return $latest;
    }

    /**
     * Clears the process output.
     *
     * @return $this
     */
    public function clearErrorOutput()
    {
        ftruncate($this->stderr, 0);
        fseek($this->stderr, 0);
        $this->incrementalErrorOutputOffset = 0;

        return $this;
    }

    /**
     * Returns the exit code returned by the process.
     *
     * @return int|null The exit status code, null if the Process is not terminated
     *
     * @throws RuntimeException In case --enable-sigchild is activated and the sigchild compatibility mode is disabled
     */
    public function getExitCode()
    {
        if (!$this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) {
            throw new RuntimeException('This PHP has been compiled with --enable-sigchild. You must use setEnhanceSigchildCompatibility() to use this method.');
        }

        $this->updateStatus(false);

        return $this->exitcode;
    }

    /**
     * Returns a string representation for the exit code returned by the process.
     *
     * This method relies on the Unix exit code status standardization
     * and might not be relevant for other operating systems.
     *
     * @return string|null A string representation for the exit status code, null if the Process is not terminated
     *
     * @see http://tldp.org/LDP/abs/html/exitcodes.html
     * @see http://en.wikipedia.org/wiki/Unix_signal
     */
    public function getExitCodeText()
    {
        if (null === $exitcode = $this->getExitCode()) {
            return null;
        }

        return isset(self::$exitCodes[$exitcode]) ? self::$exitCodes[$exitcode] : 'Unknown error';
    }

    /**
     * Checks if the process ended successfully.
     *
     * @return bool true if the process ended successfully, false otherwise
     */
    public function isSuccessful()
    {
        return 0 === $this->getExitCode();
    }

    /**
     * Returns true if the child process has been terminated by an uncaught signal.
     *
     * It always returns false on Windows.
     *
     * @return bool
     *
     * @throws RuntimeException In case --enable-sigchild is activated
     * @throws LogicException   In case the process is not terminated
     */
    public function hasBeenSignaled()
    {
        $this->requireProcessIsTerminated(__FUNCTION__);

        if (!$this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) {
            throw new RuntimeException('This PHP has been compiled with --enable-sigchild. Term signal can not be retrieved.');
        }

        return $this->processInformation['signaled'];
    }

    /**
     * Returns the number of the signal that caused the child process to terminate its execution.
     *
     * It is only meaningful if hasBeenSignaled() returns true.
     *
     * @return int
     *
     * @throws RuntimeException In case --enable-sigchild is activated
     * @throws LogicException   In case the process is not terminated
     */
    public function getTermSignal()
    {
        $this->requireProcessIsTerminated(__FUNCTION__);

        if ($this->isSigchildEnabled() && (!$this->enhanceSigchildCompatibility || -1 === $this->processInformation['termsig'])) {
            throw new RuntimeException('This PHP has been compiled with --enable-sigchild. Term signal can not be retrieved.');
        }

        return $this->processInformation['termsig'];
    }

    /**
     * Returns true if the child process has been stopped by a signal.
     *
     * It always returns false on Windows.
     *
     * @return bool
     *
     * @throws LogicException In case the process is not terminated
     */
    public function hasBeenStopped()
    {
        $this->requireProcessIsTerminated(__FUNCTION__);

        return $this->processInformation['stopped'];
    }

    /**
     * Returns the number of the signal that caused the child process to stop its execution.
     *
     * It is only meaningful if hasBeenStopped() returns true.
     *
     * @return int
     *
     * @throws LogicException In case the process is not terminated
     */
    public function getStopSignal()
    {
        $this->requireProcessIsTerminated(__FUNCTION__);

        return $this->processInformation['stopsig'];
    }

    /**
     * Checks if the process is currently running.
     *
     * @return bool true if the process is currently running, false otherwise
     */
    public function isRunning()
    {
        if (self::STATUS_STARTED !== $this->status) {
            return false;
        }

        $this->updateStatus(false);

        return $this->processInformation['running'];
    }

    /**
     * Checks if the process has been started with no regard to the current state.
     *
     * @return bool true if status is ready, false otherwise
     */
    public function isStarted()
    {
        return self::STATUS_READY != $this->status;
    }

    /**
     * Checks if the process is terminated.
     *
     * @return bool true if process is terminated, false otherwise
     */
    public function isTerminated()
    {
        $this->updateStatus(false);

        return self::STATUS_TERMINATED == $this->status;
    }

    /**
     * Gets the process status.
     *
     * The status is one of: ready, started, terminated.
     *
     * @return string The current process status
     */
    public function getStatus()
    {
        $this->updateStatus(false);

        return $this->status;
    }

    /**
     * Stops the process.
     *
     * @param int|float $timeout The timeout in seconds
     * @param int       $signal  A POSIX signal to send in case the process has not stop at timeout, default is SIGKILL (9)
     *
     * @return int|null The exit-code of the process or null if it's not running
     */
    public function stop($timeout = 10, $signal = null)
    {
        $timeoutMicro = microtime(true) + $timeout;
        if ($this->isRunning()) {
            // given `SIGTERM` may not be defined and that `proc_terminate` uses the constant value and not the constant itself, we use the same here
            $this->doSignal(15, false);
            do {
                usleep(1000);
            } while ($this->isRunning() && microtime(true) < $timeoutMicro);

            if ($this->isRunning()) {
                // Avoid exception here: process is supposed to be running, but it might have stopped just
                // after this line. In any case, let's silently discard the error, we cannot do anything.
                $this->doSignal($signal ?: 9, false);
            }
        }

        if ($this->isRunning()) {
            if (isset($this->fallbackStatus['pid'])) {
                unset($this->fallbackStatus['pid']);

                return $this->stop(0, $signal);
            }
            $this->close();
        }

        return $this->exitcode;
    }

    /**
     * Adds a line to the STDOUT stream.
     *
     * @internal
     *
     * @param string $line The line to append
     */
    public function addOutput($line)
    {
        $this->lastOutputTime = microtime(true);

        fseek($this->stdout, 0, SEEK_END);
        fwrite($this->stdout, $line);
        fseek($this->stdout, $this->incrementalOutputOffset);
    }

    /**
     * Adds a line to the STDERR stream.
     *
     * @internal
     *
     * @param string $line The line to append
     */
    public function addErrorOutput($line)
    {
        $this->lastOutputTime = microtime(true);

        fseek($this->stderr, 0, SEEK_END);
        fwrite($this->stderr, $line);
        fseek($this->stderr, $this->incrementalErrorOutputOffset);
    }

    /**
     * Gets the command line to be executed.
     *
     * @return string The command to execute
     */
    public function getCommandLine()
    {
        return \is_array($this->commandline) ? implode(' ', array_map([$this, 'escapeArgument'], $this->commandline)) : $this->commandline;
    }

    /**
     * Sets the command line to be executed.
     *
     * @param string|array $commandline The command to execute
     *
     * @return $this
     */
    public function setCommandLine($commandline)
    {
        $this->commandline = $commandline;

        return $this;
    }

    /**
     * Gets the process timeout (max. runtime).
     *
     * @return float|null The timeout in seconds or null if it's disabled
     */
    public function getTimeout()
    {
        return $this->timeout;
    }

    /**
     * Gets the process idle timeout (max. time since last output).
     *
     * @return float|null The timeout in seconds or null if it's disabled
     */
    public function getIdleTimeout()
    {
        return $this->idleTimeout;
    }

    /**
     * Sets the process timeout (max. runtime) in seconds.
     *
     * To disable the timeout, set this value to null.
     *
     * @param int|float|null $timeout The timeout in seconds
     *
     * @return $this
     *
     * @throws InvalidArgumentException if the timeout is negative
     */
    public function setTimeout($timeout)
    {
        $this->timeout = $this->validateTimeout($timeout);

        return $this;
    }

    /**
     * Sets the process idle timeout (max. time since last output).
     *
     * To disable the timeout, set this value to null.
     *
     * @param int|float|null $timeout The timeout in seconds
     *
     * @return $this
     *
     * @throws LogicException           if the output is disabled
     * @throws InvalidArgumentException if the timeout is negative
     */
    public function setIdleTimeout($timeout)
    {
        if (null !== $timeout && $this->outputDisabled) {
            throw new LogicException('Idle timeout can not be set while the output is disabled.');
        }

        $this->idleTimeout = $this->validateTimeout($timeout);

        return $this;
    }

    /**
     * Enables or disables the TTY mode.
     *
     * @param bool $tty True to enabled and false to disable
     *
     * @return $this
     *
     * @throws RuntimeException In case the TTY mode is not supported
     */
    public function setTty($tty)
    {
        if ('\\' === \DIRECTORY_SEPARATOR && $tty) {
            throw new RuntimeException('TTY mode is not supported on Windows platform.');
        }
        if ($tty) {
            static $isTtySupported;

            if (null === $isTtySupported) {
                $isTtySupported = (bool) @proc_open('echo 1 >/dev/null', [['file', '/dev/tty', 'r'], ['file', '/dev/tty', 'w'], ['file', '/dev/tty', 'w']], $pipes);
            }

            if (!$isTtySupported) {
                throw new RuntimeException('TTY mode requires /dev/tty to be read/writable.');
            }
        }

        $this->tty = (bool) $tty;

        return $this;
    }

    /**
     * Checks if the TTY mode is enabled.
     *
     * @return bool true if the TTY mode is enabled, false otherwise
     */
    public function isTty()
    {
        return $this->tty;
    }

    /**
     * Sets PTY mode.
     *
     * @param bool $bool
     *
     * @return $this
     */
    public function setPty($bool)
    {
        $this->pty = (bool) $bool;

        return $this;
    }

    /**
     * Returns PTY state.
     *
     * @return bool
     */
    public function isPty()
    {
        return $this->pty;
    }

    /**
     * Gets the working directory.
     *
     * @return string|null The current working directory or null on failure
     */
    public function getWorkingDirectory()
    {
        if (null === $this->cwd) {
            // getcwd() will return false if any one of the parent directories does not have
            // the readable or search mode set, even if the current directory does
            return getcwd() ?: null;
        }

        return $this->cwd;
    }

    /**
     * Sets the current working directory.
     *
     * @param string $cwd The new working directory
     *
     * @return $this
     */
    public function setWorkingDirectory($cwd)
    {
        $this->cwd = $cwd;

        return $this;
    }

    /**
     * Gets the environment variables.
     *
     * @return array The current environment variables
     */
    public function getEnv()
    {
        return $this->env;
    }

    /**
     * Sets the environment variables.
     *
     * Each environment variable value should be a string.
     * If it is an array, the variable is ignored.
     * If it is false or null, it will be removed when
     * env vars are otherwise inherited.
     *
     * That happens in PHP when 'argv' is registered into
     * the $_ENV array for instance.
     *
     * @param array $env The new environment variables
     *
     * @return $this
     */
    public function setEnv(array $env)
    {
        // Process can not handle env values that are arrays
        $env = array_filter($env, function ($value) {
            return !\is_array($value);
        });

        $this->env = $env;

        return $this;
    }

    /**
     * Gets the Process input.
     *
     * @return resource|string|\Iterator|null The Process input
     */
    public function getInput()
    {
        return $this->input;
    }

    /**
     * Sets the input.
     *
     * This content will be passed to the underlying process standard input.
     *
     * @param string|int|float|bool|resource|\Traversable|null $input The content
     *
     * @return $this
     *
     * @throws LogicException In case the process is running
     */
    public function setInput($input)
    {
        if ($this->isRunning()) {
            throw new LogicException('Input can not be set while the process is running.');
        }

        $this->input = ProcessUtils::validateInput(__METHOD__, $input);

        return $this;
    }

    /**
     * Gets the options for proc_open.
     *
     * @return array The current options
     *
     * @deprecated since version 3.3, to be removed in 4.0.
     */
    public function getOptions()
    {
        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);

        return $this->options;
    }

    /**
     * Sets the options for proc_open.
     *
     * @param array $options The new options
     *
     * @return $this
     *
     * @deprecated since version 3.3, to be removed in 4.0.
     */
    public function setOptions(array $options)
    {
        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);

        $this->options = $options;

        return $this;
    }

    /**
     * Gets whether or not Windows compatibility is enabled.
     *
     * This is true by default.
     *
     * @return bool
     *
     * @deprecated since version 3.3, to be removed in 4.0. Enhanced Windows compatibility will always be enabled.
     */
    public function getEnhanceWindowsCompatibility()
    {
        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Enhanced Windows compatibility will always be enabled.', __METHOD__), E_USER_DEPRECATED);

        return $this->enhanceWindowsCompatibility;
    }

    /**
     * Sets whether or not Windows compatibility is enabled.
     *
     * @param bool $enhance
     *
     * @return $this
     *
     * @deprecated since version 3.3, to be removed in 4.0. Enhanced Windows compatibility will always be enabled.
     */
    public function setEnhanceWindowsCompatibility($enhance)
    {
        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Enhanced Windows compatibility will always be enabled.', __METHOD__), E_USER_DEPRECATED);

        $this->enhanceWindowsCompatibility = (bool) $enhance;

        return $this;
    }

    /**
     * Returns whether sigchild compatibility mode is activated or not.
     *
     * @return bool
     *
     * @deprecated since version 3.3, to be removed in 4.0. Sigchild compatibility will always be enabled.
     */
    public function getEnhanceSigchildCompatibility()
    {
        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Sigchild compatibility will always be enabled.', __METHOD__), E_USER_DEPRECATED);

        return $this->enhanceSigchildCompatibility;
    }

    /**
     * Activates sigchild compatibility mode.
     *
     * Sigchild compatibility mode is required to get the exit code and
     * determine the success of a process when PHP has been compiled with
     * the --enable-sigchild option
     *
     * @param bool $enhance
     *
     * @return $this
     *
     * @deprecated since version 3.3, to be removed in 4.0.
     */
    public function setEnhanceSigchildCompatibility($enhance)
    {
        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Sigchild compatibility will always be enabled.', __METHOD__), E_USER_DEPRECATED);

        $this->enhanceSigchildCompatibility = (bool) $enhance;

        return $this;
    }

    /**
     * Sets whether environment variables will be inherited or not.
     *
     * @param bool $inheritEnv
     *
     * @return $this
     */
    public function inheritEnvironmentVariables($inheritEnv = true)
    {
        if (!$inheritEnv) {
            @trigger_error('Not inheriting environment variables is deprecated since Symfony 3.3 and will always happen in 4.0. Set "Process::inheritEnvironmentVariables()" to true instead.', E_USER_DEPRECATED);
        }

        $this->inheritEnv = (bool) $inheritEnv;

        return $this;
    }

    /**
     * Returns whether environment variables will be inherited or not.
     *
     * @return bool
     *
     * @deprecated since version 3.3, to be removed in 4.0. Environment variables will always be inherited.
     */
    public function areEnvironmentVariablesInherited()
    {
        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Environment variables will always be inherited.', __METHOD__), E_USER_DEPRECATED);

        return $this->inheritEnv;
    }

    /**
     * Performs a check between the timeout definition and the time the process started.
     *
     * In case you run a background process (with the start method), you should
     * trigger this method regularly to ensure the process timeout
     *
     * @throws ProcessTimedOutException In case the timeout was reached
     */
    public function checkTimeout()
    {
        if (self::STATUS_STARTED !== $this->status) {
            return;
        }

        if (null !== $this->timeout && $this->timeout < microtime(true) - $this->starttime) {
            $this->stop(0);

            throw new ProcessTimedOutException($this, ProcessTimedOutException::TYPE_GENERAL);
        }

        if (null !== $this->idleTimeout && $this->idleTimeout < microtime(true) - $this->lastOutputTime) {
            $this->stop(0);

            throw new ProcessTimedOutException($this, ProcessTimedOutException::TYPE_IDLE);
        }
    }

    /**
     * Returns whether PTY is supported on the current operating system.
     *
     * @return bool
     */
    public static function isPtySupported()
    {
        static $result;

        if (null !== $result) {
            return $result;
        }

        if ('\\' === \DIRECTORY_SEPARATOR) {
            return $result = false;
        }

        return $result = (bool) @proc_open('echo 1 >/dev/null', [['pty'], ['pty'], ['pty']], $pipes);
    }

    /**
     * Creates the descriptors needed by the proc_open.
     *
     * @return array
     */
    private function getDescriptors()
    {
        if ($this->input instanceof \Iterator) {
            $this->input->rewind();
        }
        if ('\\' === \DIRECTORY_SEPARATOR) {
            $this->processPipes = new WindowsPipes($this->input, !$this->outputDisabled || $this->hasCallback);
        } else {
            $this->processPipes = new UnixPipes($this->isTty(), $this->isPty(), $this->input, !$this->outputDisabled || $this->hasCallback);
        }

        return $this->processPipes->getDescriptors();
    }

    /**
     * Builds up the callback used by wait().
     *
     * The callbacks adds all occurred output to the specific buffer and calls
     * the user callback (if present) with the received output.
     *
     * @param callable|null $callback The user defined PHP callback
     *
     * @return \Closure A PHP closure
     */
    protected function buildCallback(callable $callback = null)
    {
        if ($this->outputDisabled) {
            return function ($type, $data) use ($callback) {
                if (null !== $callback) {
                    \call_user_func($callback, $type, $data);
                }
            };
        }

        $out = self::OUT;

        return function ($type, $data) use ($callback, $out) {
            if ($out == $type) {
                $this->addOutput($data);
            } else {
                $this->addErrorOutput($data);
            }

            if (null !== $callback) {
                \call_user_func($callback, $type, $data);
            }
        };
    }

    /**
     * Updates the status of the process, reads pipes.
     *
     * @param bool $blocking Whether to use a blocking read call
     */
    protected function updateStatus($blocking)
    {
        if (self::STATUS_STARTED !== $this->status) {
            return;
        }

        $this->processInformation = proc_get_status($this->process);
        $running = $this->processInformation['running'];

        $this->readPipes($running && $blocking, '\\' !== \DIRECTORY_SEPARATOR || !$running);

        if ($this->fallbackStatus && $this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) {
            $this->processInformation = $this->fallbackStatus + $this->processInformation;
        }

        if (!$running) {
            $this->close();
        }
    }

    /**
     * Returns whether PHP has been compiled with the '--enable-sigchild' option or not.
     *
     * @return bool
     */
    protected function isSigchildEnabled()
    {
        if (null !== self::$sigchild) {
            return self::$sigchild;
        }

        if (!\function_exists('phpinfo') || \defined('HHVM_VERSION')) {
            return self::$sigchild = false;
        }

        ob_start();
        phpinfo(INFO_GENERAL);

        return self::$sigchild = false !== strpos(ob_get_clean(), '--enable-sigchild');
    }

    /**
     * Reads pipes for the freshest output.
     *
     * @param string $caller   The name of the method that needs fresh outputs
     * @param bool   $blocking Whether to use blocking calls or not
     *
     * @throws LogicException in case output has been disabled or process is not started
     */
    private function readPipesForOutput($caller, $blocking = false)
    {
        if ($this->outputDisabled) {
            throw new LogicException('Output has been disabled.');
        }

        $this->requireProcessIsStarted($caller);

        $this->updateStatus($blocking);
    }

    /**
     * Validates and returns the filtered timeout.
     *
     * @param int|float|null $timeout
     *
     * @return float|null
     *
     * @throws InvalidArgumentException if the given timeout is a negative number
     */
    private function validateTimeout($timeout)
    {
        $timeout = (float) $timeout;

        if (0.0 === $timeout) {
            $timeout = null;
        } elseif ($timeout < 0) {
            throw new InvalidArgumentException('The timeout value must be a valid positive integer or float number.');
        }

        return $timeout;
    }

    /**
     * Reads pipes, executes callback.
     *
     * @param bool $blocking Whether to use blocking calls or not
     * @param bool $close    Whether to close file handles or not
     */
    private function readPipes($blocking, $close)
    {
        $result = $this->processPipes->readAndWrite($blocking, $close);

        $callback = $this->callback;
        foreach ($result as $type => $data) {
            if (3 !== $type) {
                $callback(self::STDOUT === $type ? self::OUT : self::ERR, $data);
            } elseif (!isset($this->fallbackStatus['signaled'])) {
                $this->fallbackStatus['exitcode'] = (int) $data;
            }
        }
    }

    /**
     * Closes process resource, closes file handles, sets the exitcode.
     *
     * @return int The exitcode
     */
    private function close()
    {
        $this->processPipes->close();
        if (\is_resource($this->process)) {
            proc_close($this->process);
        }
        $this->exitcode = $this->processInformation['exitcode'];
        $this->status = self::STATUS_TERMINATED;

        if (-1 === $this->exitcode) {
            if ($this->processInformation['signaled'] && 0 < $this->processInformation['termsig']) {
                // if process has been signaled, no exitcode but a valid termsig, apply Unix convention
                $this->exitcode = 128 + $this->processInformation['termsig'];
            } elseif ($this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) {
                $this->processInformation['signaled'] = true;
                $this->processInformation['termsig'] = -1;
            }
        }

        // Free memory from self-reference callback created by buildCallback
        // Doing so in other contexts like __destruct or by garbage collector is ineffective
        // Now pipes are closed, so the callback is no longer necessary
        $this->callback = null;

        return $this->exitcode;
    }

    /**
     * Resets data related to the latest run of the process.
     */
    private function resetProcessData()
    {
        $this->starttime = null;
        $this->callback = null;
        $this->exitcode = null;
        $this->fallbackStatus = [];
        $this->processInformation = null;
        $this->stdout = fopen('php://temp/maxmemory:'.(1024 * 1024), 'w+b');
        $this->stderr = fopen('php://temp/maxmemory:'.(1024 * 1024), 'w+b');
        $this->process = null;
        $this->latestSignal = null;
        $this->status = self::STATUS_READY;
        $this->incrementalOutputOffset = 0;
        $this->incrementalErrorOutputOffset = 0;
    }

    /**
     * Sends a POSIX signal to the process.
     *
     * @param int  $signal         A valid POSIX signal (see https://php.net/pcntl.constants)
     * @param bool $throwException Whether to throw exception in case signal failed
     *
     * @return bool True if the signal was sent successfully, false otherwise
     *
     * @throws LogicException   In case the process is not running
     * @throws RuntimeException In case --enable-sigchild is activated and the process can't be killed
     * @throws RuntimeException In case of failure
     */
    private function doSignal($signal, $throwException)
    {
        if (null === $pid = $this->getPid()) {
            if ($throwException) {
                throw new LogicException('Can not send signal on a non running process.');
            }

            return false;
        }

        if ('\\' === \DIRECTORY_SEPARATOR) {
            exec(sprintf('taskkill /F /T /PID %d 2>&1', $pid), $output, $exitCode);
            if ($exitCode && $this->isRunning()) {
                if ($throwException) {
                    throw new RuntimeException(sprintf('Unable to kill the process (%s).', implode(' ', $output)));
                }

                return false;
            }
        } else {
            if (!$this->enhanceSigchildCompatibility || !$this->isSigchildEnabled()) {
                $ok = @proc_terminate($this->process, $signal);
            } elseif (\function_exists('posix_kill')) {
                $ok = @posix_kill($pid, $signal);
            } elseif ($ok = proc_open(sprintf('kill -%d %d', $signal, $pid), [2 => ['pipe', 'w']], $pipes)) {
                $ok = false === fgets($pipes[2]);
            }
            if (!$ok) {
                if ($throwException) {
                    throw new RuntimeException(sprintf('Error while sending signal `%s`.', $signal));
                }

                return false;
            }
        }

        $this->latestSignal = (int) $signal;
        $this->fallbackStatus['signaled'] = true;
        $this->fallbackStatus['exitcode'] = -1;
        $this->fallbackStatus['termsig'] = $this->latestSignal;

        return true;
    }

    private function prepareWindowsCommandLine($cmd, array &$env)
    {
        $uid = uniqid('', true);
        $varCount = 0;
        $varCache = [];
        $cmd = preg_replace_callback(
            '/"(?:(
                [^"%!^]*+
                (?:
                    (?: !LF! | "(?:\^[%!^])?+" )
                    [^"%!^]*+
                )++
            ) | [^"]*+ )"/x',
            function ($m) use (&$env, &$varCache, &$varCount, $uid) {
                if (!isset($m[1])) {
                    return $m[0];
                }
                if (isset($varCache[$m[0]])) {
                    return $varCache[$m[0]];
                }
                if (false !== strpos($value = $m[1], "\0")) {
                    $value = str_replace("\0", '?', $value);
                }
                if (false === strpbrk($value, "\"%!\n")) {
                    return '"'.$value.'"';
                }

                $value = str_replace(['!LF!', '"^!"', '"^%"', '"^^"', '""'], ["\n", '!', '%', '^', '"'], $value);
                $value = '"'.preg_replace('/(\\\\*)"/', '$1$1\\"', $value).'"';
                $var = $uid.++$varCount;

                $env[$var] = $value;

                return $varCache[$m[0]] = '!'.$var.'!';
            },
            $cmd
        );

        $cmd = 'cmd /V:ON /E:ON /D /C ('.str_replace("\n", ' ', $cmd).')';
        foreach ($this->processPipes->getFiles() as $offset => $filename) {
            $cmd .= ' '.$offset.'>"'.$filename.'"';
        }

        return $cmd;
    }

    /**
     * Ensures the process is running or terminated, throws a LogicException if the process has a not started.
     *
     * @param string $functionName The function name that was called
     *
     * @throws LogicException if the process has not run
     */
    private function requireProcessIsStarted($functionName)
    {
        if (!$this->isStarted()) {
            throw new LogicException(sprintf('Process must be started before calling %s.', $functionName));
        }
    }

    /**
     * Ensures the process is terminated, throws a LogicException if the process has a status different than `terminated`.
     *
     * @param string $functionName The function name that was called
     *
     * @throws LogicException if the process is not yet terminated
     */
    private function requireProcessIsTerminated($functionName)
    {
        if (!$this->isTerminated()) {
            throw new LogicException(sprintf('Process must be terminated before calling %s.', $functionName));
        }
    }

    /**
     * Escapes a string to be used as a shell argument.
     *
     * @param string $argument The argument that will be escaped
     *
     * @return string The escaped argument
     */
    private function escapeArgument($argument)
    {
        if ('\\' !== \DIRECTORY_SEPARATOR) {
            return "'".str_replace("'", "'\\''", $argument)."'";
        }
        if ('' === $argument = (string) $argument) {
            return '""';
        }
        if (false !== strpos($argument, "\0")) {
            $argument = str_replace("\0", '?', $argument);
        }
        if (!preg_match('/[\/()%!^"<>&|\s]/', $argument)) {
            return $argument;
        }
        $argument = preg_replace('/(\\\\+)$/', '$1$1', $argument);

        return '"'.str_replace(['"', '^', '%', '!', "\n"], ['""', '"^^"', '"^%"', '"^!"', '!LF!'], $argument).'"';
    }

    private function getDefaultEnv()
    {
        $env = [];

        foreach ($_SERVER as $k => $v) {
            if (\is_string($v) && false !== $v = getenv($k)) {
                $env[$k] = $v;
            }
        }

        foreach ($_ENV as $k => $v) {
            if (\is_string($v)) {
                $env[$k] = $v;
            }
        }

        return $env;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Debug;

/**
 * Registers all the debug tools.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class Debug
{
    private static $enabled = false;

    /**
     * Enables the debug tools.
     *
     * This method registers an error handler, an exception handler and a special class loader.
     *
     * @param int  $errorReportingLevel The level of error reporting you want
     * @param bool $displayErrors       Whether to display errors (for development) or just log them (for production)
     */
    public static function enable($errorReportingLevel = E_ALL, $displayErrors = true)
    {
        if (static::$enabled) {
            return;
        }

        static::$enabled = true;

        if (null !== $errorReportingLevel) {
            error_reporting($errorReportingLevel);
        } else {
            error_reporting(E_ALL);
        }

        if (!\in_array(\PHP_SAPI, ['cli', 'phpdbg'], true)) {
            ini_set('display_errors', 0);
            ExceptionHandler::register();
        } elseif ($displayErrors && (!filter_var(ini_get('log_errors'), FILTER_VALIDATE_BOOLEAN) || ini_get('error_log'))) {
            // CLI - display errors only if they're not already logged to STDERR
            ini_set('display_errors', 1);
        }
        if ($displayErrors) {
            ErrorHandler::register(new ErrorHandler(new BufferingLogger()));
        } else {
            ErrorHandler::register()->throwAt(0, true);
        }

        DebugClassLoader::enable();
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Debug\FatalErrorHandler;

use Symfony\Component\Debug\Exception\FatalErrorException;
use Symfony\Component\Debug\Exception\UndefinedFunctionException;

/**
 * ErrorHandler for undefined functions.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class UndefinedFunctionFatalErrorHandler implements FatalErrorHandlerInterface
{
    /**
     * {@inheritdoc}
     */
    public function handleError(array $error, FatalErrorException $exception)
    {
        $messageLen = \strlen($error['message']);
        $notFoundSuffix = '()';
        $notFoundSuffixLen = \strlen($notFoundSuffix);
        if ($notFoundSuffixLen > $messageLen) {
            return null;
        }

        if (0 !== substr_compare($error['message'], $notFoundSuffix, -$notFoundSuffixLen)) {
            return null;
        }

        $prefix = 'Call to undefined function ';
        $prefixLen = \strlen($prefix);
        if (0 !== strpos($error['message'], $prefix)) {
            return null;
        }

        $fullyQualifiedFunctionName = substr($error['message'], $prefixLen, -$notFoundSuffixLen);
        if (false !== $namespaceSeparatorIndex = strrpos($fullyQualifiedFunctionName, '\\')) {
            $functionName = substr($fullyQualifiedFunctionName, $namespaceSeparatorIndex + 1);
            $namespacePrefix = substr($fullyQualifiedFunctionName, 0, $namespaceSeparatorIndex);
            $message = sprintf('Attempted to call function "%s" from namespace "%s".', $functionName, $namespacePrefix);
        } else {
            $functionName = $fullyQualifiedFunctionName;
            $message = sprintf('Attempted to call function "%s" from the global namespace.', $functionName);
        }

        $candidates = [];
        foreach (get_defined_functions() as $type => $definedFunctionNames) {
            foreach ($definedFunctionNames as $definedFunctionName) {
                if (false !== $namespaceSeparatorIndex = strrpos($definedFunctionName, '\\')) {
                    $definedFunctionNameBasename = substr($definedFunctionName, $namespaceSeparatorIndex + 1);
                } else {
                    $definedFunctionNameBasename = $definedFunctionName;
                }

                if ($definedFunctionNameBasename === $functionName) {
                    $candidates[] = '\\'.$definedFunctionName;
                }
            }
        }

        if ($candidates) {
            sort($candidates);
            $last = array_pop($candidates).'"?';
            if ($candidates) {
                $candidates = 'e.g. "'.implode('", "', $candidates).'" or "'.$last;
            } else {
                $candidates = '"'.$last;
            }
            $message .= "\nDid you mean to call ".$candidates;
        }

        return new UndefinedFunctionException($message, $exception);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Debug\FatalErrorHandler;

use Symfony\Component\Debug\Exception\FatalErrorException;

/**
 * Attempts to convert fatal errors to exceptions.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
interface FatalErrorHandlerInterface
{
    /**
     * Attempts to convert an error into an exception.
     *
     * @param array               $error     An array as returned by error_get_last()
     * @param FatalErrorException $exception A FatalErrorException instance
     *
     * @return FatalErrorException|null A FatalErrorException instance if the class is able to convert the error, null otherwise
     */
    public function handleError(array $error, FatalErrorException $exception);
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Debug\FatalErrorHandler;

use Symfony\Component\Debug\Exception\FatalErrorException;
use Symfony\Component\Debug\Exception\UndefinedMethodException;

/**
 * ErrorHandler for undefined methods.
 *
 * @author GrÃ©goire Pineau <lyrixx@lyrixx.info>
 */
class UndefinedMethodFatalErrorHandler implements FatalErrorHandlerInterface
{
    /**
     * {@inheritdoc}
     */
    public function handleError(array $error, FatalErrorException $exception)
    {
        preg_match('/^Call to undefined method (.*)::(.*)\(\)$/', $error['message'], $matches);
        if (!$matches) {
            return null;
        }

        $className = $matches[1];
        $methodName = $matches[2];

        $message = sprintf('Attempted to call an undefined method named "%s" of class "%s".', $methodName, $className);

        if (!class_exists($className) || null === $methods = get_class_methods($className)) {
            // failed to get the class or its methods on which an unknown method was called (for example on an anonymous class)
            return new UndefinedMethodException($message, $exception);
        }

        $candidates = [];
        foreach ($methods as $definedMethodName) {
            $lev = levenshtein($methodName, $definedMethodName);
            if ($lev <= \strlen($methodName) / 3 || false !== strpos($definedMethodName, $methodName)) {
                $candidates[] = $definedMethodName;
            }
        }

        if ($candidates) {
            sort($candidates);
            $last = array_pop($candidates).'"?';
            if ($candidates) {
                $candidates = 'e.g. "'.implode('", "', $candidates).'" or "'.$last;
            } else {
                $candidates = '"'.$last;
            }

            $message .= "\nDid you mean to call ".$candidates;
        }

        return new UndefinedMethodException($message, $exception);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Debug\FatalErrorHandler;

use Composer\Autoload\ClassLoader as ComposerClassLoader;
use Symfony\Component\ClassLoader\ClassLoader as SymfonyClassLoader;
use Symfony\Component\Debug\DebugClassLoader;
use Symfony\Component\Debug\Exception\ClassNotFoundException;
use Symfony\Component\Debug\Exception\FatalErrorException;

/**
 * ErrorHandler for classes that do not exist.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ClassNotFoundFatalErrorHandler implements FatalErrorHandlerInterface
{
    /**
     * {@inheritdoc}
     */
    public function handleError(array $error, FatalErrorException $exception)
    {
        $messageLen = \strlen($error['message']);
        $notFoundSuffix = '\' not found';
        $notFoundSuffixLen = \strlen($notFoundSuffix);
        if ($notFoundSuffixLen > $messageLen) {
            return null;
        }

        if (0 !== substr_compare($error['message'], $notFoundSuffix, -$notFoundSuffixLen)) {
            return null;
        }

        foreach (['class', 'interface', 'trait'] as $typeName) {
            $prefix = ucfirst($typeName).' \'';
            $prefixLen = \strlen($prefix);
            if (0 !== strpos($error['message'], $prefix)) {
                continue;
            }

            $fullyQualifiedClassName = substr($error['message'], $prefixLen, -$notFoundSuffixLen);
            if (false !== $namespaceSeparatorIndex = strrpos($fullyQualifiedClassName, '\\')) {
                $className = substr($fullyQualifiedClassName, $namespaceSeparatorIndex + 1);
                $namespacePrefix = substr($fullyQualifiedClassName, 0, $namespaceSeparatorIndex);
                $message = sprintf('Attempted to load %s "%s" from namespace "%s".', $typeName, $className, $namespacePrefix);
                $tail = ' for another namespace?';
            } else {
                $className = $fullyQualifiedClassName;
                $message = sprintf('Attempted to load %s "%s" from the global namespace.', $typeName, $className);
                $tail = '?';
            }

            if ($candidates = $this->getClassCandidates($className)) {
                $tail = array_pop($candidates).'"?';
                if ($candidates) {
                    $tail = ' for e.g. "'.implode('", "', $candidates).'" or "'.$tail;
                } else {
                    $tail = ' for "'.$tail;
                }
            }
            $message .= "\nDid you forget a \"use\" statement".$tail;

            return new ClassNotFoundException($message, $exception);
        }

        return null;
    }

    /**
     * Tries to guess the full namespace for a given class name.
     *
     * By default, it looks for PSR-0 and PSR-4 classes registered via a Symfony or a Composer
     * autoloader (that should cover all common cases).
     *
     * @param string $class A class name (without its namespace)
     *
     * @return array An array of possible fully qualified class names
     */
    private function getClassCandidates($class)
    {
        if (!\is_array($functions = spl_autoload_functions())) {
            return [];
        }

        // find Symfony and Composer autoloaders
        $classes = [];

        foreach ($functions as $function) {
            if (!\is_array($function)) {
                continue;
            }
            // get class loaders wrapped by DebugClassLoader
            if ($function[0] instanceof DebugClassLoader) {
                $function = $function[0]->getClassLoader();

                if (!\is_array($function)) {
                    continue;
                }
            }

            if ($function[0] instanceof ComposerClassLoader || $function[0] instanceof SymfonyClassLoader) {
                foreach ($function[0]->getPrefixes() as $prefix => $paths) {
                    foreach ($paths as $path) {
                        $classes = array_merge($classes, $this->findClassInPath($path, $class, $prefix));
                    }
                }
            }
            if ($function[0] instanceof ComposerClassLoader) {
                foreach ($function[0]->getPrefixesPsr4() as $prefix => $paths) {
                    foreach ($paths as $path) {
                        $classes = array_merge($classes, $this->findClassInPath($path, $class, $prefix));
                    }
                }
            }
        }

        return array_unique($classes);
    }

    /**
     * @param string $path
     * @param string $class
     * @param string $prefix
     *
     * @return array
     */
    private function findClassInPath($path, $class, $prefix)
    {
        if (!$path = realpath($path.'/'.strtr($prefix, '\\_', '//')) ?: realpath($path.'/'.\dirname(strtr($prefix, '\\_', '//'))) ?: realpath($path)) {
            return [];
        }

        $classes = [];
        $filename = $class.'.php';
        foreach (new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($path, \RecursiveDirectoryIterator::SKIP_DOTS), \RecursiveIteratorIterator::LEAVES_ONLY) as $file) {
            if ($filename == $file->getFileName() && $class = $this->convertFileToClass($path, $file->getPathName(), $prefix)) {
                $classes[] = $class;
            }
        }

        return $classes;
    }

    /**
     * @param string $path
     * @param string $file
     * @param string $prefix
     *
     * @return string|null
     */
    private function convertFileToClass($path, $file, $prefix)
    {
        $candidates = [
            // namespaced class
            $namespacedClass = str_replace([$path.\DIRECTORY_SEPARATOR, '.php', '/'], ['', '', '\\'], $file),
            // namespaced class (with target dir)
            $prefix.$namespacedClass,
            // namespaced class (with target dir and separator)
            $prefix.'\\'.$namespacedClass,
            // PEAR class
            str_replace('\\', '_', $namespacedClass),
            // PEAR class (with target dir)
            str_replace('\\', '_', $prefix.$namespacedClass),
            // PEAR class (with target dir and separator)
            str_replace('\\', '_', $prefix.'\\'.$namespacedClass),
        ];

        if ($prefix) {
            $candidates = array_filter($candidates, function ($candidate) use ($prefix) { return 0 === strpos($candidate, $prefix); });
        }

        // We cannot use the autoloader here as most of them use require; but if the class
        // is not found, the new autoloader call will require the file again leading to a
        // "cannot redeclare class" error.
        foreach ($candidates as $candidate) {
            if ($this->classExists($candidate)) {
                return $candidate;
            }
        }

        try {
            require_once $file;
        } catch (\Throwable $e) {
            return null;
        }

        foreach ($candidates as $candidate) {
            if ($this->classExists($candidate)) {
                return $candidate;
            }
        }

        return null;
    }

    /**
     * @param string $class
     *
     * @return bool
     */
    private function classExists($class)
    {
        return class_exists($class, false) || interface_exists($class, false) || trait_exists($class, false);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Debug;

use Symfony\Component\Debug\Exception\FlattenException;
use Symfony\Component\Debug\Exception\OutOfMemoryException;
use Symfony\Component\HttpKernel\Debug\FileLinkFormatter;

/**
 * ExceptionHandler converts an exception to a Response object.
 *
 * It is mostly useful in debug mode to replace the default PHP/XDebug
 * output with something prettier and more useful.
 *
 * As this class is mainly used during Kernel boot, where nothing is yet
 * available, the Response content is always HTML.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Nicolas Grekas <p@tchwork.com>
 */
class ExceptionHandler
{
    private $debug;
    private $charset;
    private $handler;
    private $caughtBuffer;
    private $caughtLength;
    private $fileLinkFormat;

    public function __construct($debug = true, $charset = null, $fileLinkFormat = null)
    {
        $this->debug = $debug;
        $this->charset = $charset ?: ini_get('default_charset') ?: 'UTF-8';
        $this->fileLinkFormat = $fileLinkFormat;
    }

    /**
     * Registers the exception handler.
     *
     * @param bool        $debug          Enable/disable debug mode, where the stack trace is displayed
     * @param string|null $charset        The charset used by exception messages
     * @param string|null $fileLinkFormat The IDE link template
     *
     * @return static
     */
    public static function register($debug = true, $charset = null, $fileLinkFormat = null)
    {
        $handler = new static($debug, $charset, $fileLinkFormat);

        $prev = set_exception_handler([$handler, 'handle']);
        if (\is_array($prev) && $prev[0] instanceof ErrorHandler) {
            restore_exception_handler();
            $prev[0]->setExceptionHandler([$handler, 'handle']);
        }

        return $handler;
    }

    /**
     * Sets a user exception handler.
     *
     * @param callable $handler An handler that will be called on Exception
     *
     * @return callable|null The previous exception handler if any
     */
    public function setHandler(callable $handler = null)
    {
        $old = $this->handler;
        $this->handler = $handler;

        return $old;
    }

    /**
     * Sets the format for links to source files.
     *
     * @param string|FileLinkFormatter $fileLinkFormat The format for links to source files
     *
     * @return string The previous file link format
     */
    public function setFileLinkFormat($fileLinkFormat)
    {
        $old = $this->fileLinkFormat;
        $this->fileLinkFormat = $fileLinkFormat;

        return $old;
    }

    /**
     * Sends a response for the given Exception.
     *
     * To be as fail-safe as possible, the exception is first handled
     * by our simple exception handler, then by the user exception handler.
     * The latter takes precedence and any output from the former is cancelled,
     * if and only if nothing bad happens in this handling path.
     */
    public function handle(\Exception $exception)
    {
        if (null === $this->handler || $exception instanceof OutOfMemoryException) {
            $this->sendPhpResponse($exception);

            return;
        }

        $caughtLength = $this->caughtLength = 0;

        ob_start(function ($buffer) {
            $this->caughtBuffer = $buffer;

            return '';
        });

        $this->sendPhpResponse($exception);
        while (null === $this->caughtBuffer && ob_end_flush()) {
            // Empty loop, everything is in the condition
        }
        if (isset($this->caughtBuffer[0])) {
            ob_start(function ($buffer) {
                if ($this->caughtLength) {
                    // use substr_replace() instead of substr() for mbstring overloading resistance
                    $cleanBuffer = substr_replace($buffer, '', 0, $this->caughtLength);
                    if (isset($cleanBuffer[0])) {
                        $buffer = $cleanBuffer;
                    }
                }

                return $buffer;
            });

            echo $this->caughtBuffer;
            $caughtLength = ob_get_length();
        }
        $this->caughtBuffer = null;

        try {
            \call_user_func($this->handler, $exception);
            $this->caughtLength = $caughtLength;
        } catch (\Exception $e) {
            if (!$caughtLength) {
                // All handlers failed. Let PHP handle that now.
                throw $exception;
            }
        }
    }

    /**
     * Sends the error associated with the given Exception as a plain PHP response.
     *
     * This method uses plain PHP functions like header() and echo to output
     * the response.
     *
     * @param \Exception|FlattenException $exception An \Exception or FlattenException instance
     */
    public function sendPhpResponse($exception)
    {
        if (!$exception instanceof FlattenException) {
            $exception = FlattenException::create($exception);
        }

        if (!headers_sent()) {
            header(sprintf('HTTP/1.0 %s', $exception->getStatusCode()));
            foreach ($exception->getHeaders() as $name => $value) {
                header($name.': '.$value, false);
            }
            header('Content-Type: text/html; charset='.$this->charset);
        }

        echo $this->decorate($this->getContent($exception), $this->getStylesheet($exception));
    }

    /**
     * Gets the full HTML content associated with the given exception.
     *
     * @param \Exception|FlattenException $exception An \Exception or FlattenException instance
     *
     * @return string The HTML content as a string
     */
    public function getHtml($exception)
    {
        if (!$exception instanceof FlattenException) {
            $exception = FlattenException::create($exception);
        }

        return $this->decorate($this->getContent($exception), $this->getStylesheet($exception));
    }

    /**
     * Gets the HTML content associated with the given exception.
     *
     * @return string The content as a string
     */
    public function getContent(FlattenException $exception)
    {
        switch ($exception->getStatusCode()) {
            case 404:
                $title = 'Sorry, the page you are looking for could not be found.';
                break;
            default:
                $title = 'Whoops, looks like something went wrong.';
        }

        if (!$this->debug) {
            return <<<EOF
                <div class="container">
                    <h1>$title</h1>
                </div>
EOF;
        }

        $content = '';
        try {
            $count = \count($exception->getAllPrevious());
            $total = $count + 1;
            foreach ($exception->toArray() as $position => $e) {
                $ind = $count - $position + 1;
                $class = $this->formatClass($e['class']);
                $message = nl2br($this->escapeHtml($e['message']));
                $content .= sprintf(<<<'EOF'
                    <div class="trace trace-as-html">
                        <table class="trace-details">
                            <thead class="trace-head"><tr><th>
                                <h3 class="trace-class">
                                    <span class="text-muted">(%d/%d)</span>
                                    <span class="exception_title">%s</span>
                                </h3>
                                <p class="break-long-words trace-message">%s</p>
                            </th></tr></thead>
                            <tbody>
EOF
                    , $ind, $total, $class, $message);
                foreach ($e['trace'] as $trace) {
                    $content .= '<tr><td>';
                    if ($trace['function']) {
                        $content .= sprintf('at <span class="trace-class">%s</span><span class="trace-type">%s</span><span class="trace-method">%s</span>(<span class="trace-arguments">%s</span>)', $this->formatClass($trace['class']), $trace['type'], $trace['function'], $this->formatArgs($trace['args']));
                    }
                    if (isset($trace['file']) && isset($trace['line'])) {
                        $content .= $this->formatPath($trace['file'], $trace['line']);
                    }
                    $content .= "</td></tr>\n";
                }

                $content .= "</tbody>\n</table>\n</div>\n";
            }
        } catch (\Exception $e) {
            // something nasty happened and we cannot throw an exception anymore
            if ($this->debug) {
                $title = sprintf('Exception thrown when handling an exception (%s: %s)', \get_class($e), $this->escapeHtml($e->getMessage()));
            } else {
                $title = 'Whoops, looks like something went wrong.';
            }
        }

        $symfonyGhostImageContents = $this->getSymfonyGhostAsSvg();

        return <<<EOF
            <div class="exception-summary">
                <div class="container">
                    <div class="exception-message-wrapper">
                        <h1 class="break-long-words exception-message">$title</h1>
                        <div class="exception-illustration hidden-xs-down">$symfonyGhostImageContents</div>
                    </div>
                </div>
            </div>

            <div class="container">
                $content
            </div>
EOF;
    }

    /**
     * Gets the stylesheet associated with the given exception.
     *
     * @return string The stylesheet as a string
     */
    public function getStylesheet(FlattenException $exception)
    {
        if (!$this->debug) {
            return <<<'EOF'
                body { background-color: #fff; color: #222; font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; margin: 0; }
                .container { margin: 30px; max-width: 600px; }
                h1 { color: #dc3545; font-size: 24px; }
EOF;
        }

        return <<<'EOF'
            body { background-color: #F9F9F9; color: #222; font: 14px/1.4 Helvetica, Arial, sans-serif; margin: 0; padding-bottom: 45px; }

            a { cursor: pointer; text-decoration: none; }
            a:hover { text-decoration: underline; }
            abbr[title] { border-bottom: none; cursor: help; text-decoration: none; }

            code, pre { font: 13px/1.5 Consolas, Monaco, Menlo, "Ubuntu Mono", "Liberation Mono", monospace; }

            table, tr, th, td { background: #FFF; border-collapse: collapse; vertical-align: top; }
            table { background: #FFF; border: 1px solid #E0E0E0; box-shadow: 0px 0px 1px rgba(128, 128, 128, .2); margin: 1em 0; width: 100%; }
            table th, table td { border: solid #E0E0E0; border-width: 1px 0; padding: 8px 10px; }
            table th { background-color: #E0E0E0; font-weight: bold; text-align: left; }

            .hidden-xs-down { display: none; }
            .block { display: block; }
            .break-long-words { -ms-word-break: break-all; word-break: break-all; word-break: break-word; -webkit-hyphens: auto; -moz-hyphens: auto; hyphens: auto; }
            .text-muted { color: #999; }

            .container { max-width: 1024px; margin: 0 auto; padding: 0 15px; }
            .container::after { content: ""; display: table; clear: both; }

            .exception-summary { background: #B0413E; border-bottom: 2px solid rgba(0, 0, 0, 0.1); border-top: 1px solid rgba(0, 0, 0, .3); flex: 0 0 auto; margin-bottom: 30px; }

            .exception-message-wrapper { display: flex; align-items: center; min-height: 70px; }
            .exception-message { flex-grow: 1; padding: 30px 0; }
            .exception-message, .exception-message a { color: #FFF; font-size: 21px; font-weight: 400; margin: 0; }
            .exception-message.long { font-size: 18px; }
            .exception-message a { border-bottom: 1px solid rgba(255, 255, 255, 0.5); font-size: inherit; text-decoration: none; }
            .exception-message a:hover { border-bottom-color: #ffffff; }

            .exception-illustration { flex-basis: 111px; flex-shrink: 0; height: 66px; margin-left: 15px; opacity: .7; }

            .trace + .trace { margin-top: 30px; }
            .trace-head .trace-class { color: #222; font-size: 18px; font-weight: bold; line-height: 1.3; margin: 0; position: relative; }

            .trace-message { font-size: 14px; font-weight: normal; margin: .5em 0 0; }

            .trace-file-path, .trace-file-path a { color: #222; margin-top: 3px; font-size: 13px; }
            .trace-class { color: #B0413E; }
            .trace-type { padding: 0 2px; }
            .trace-method { color: #B0413E; font-weight: bold; }
            .trace-arguments { color: #777; font-weight: normal; padding-left: 2px; }

            @media (min-width: 575px) {
                .hidden-xs-down { display: initial; }
            }
EOF;
    }

    private function decorate($content, $css)
    {
        return <<<EOF
<!DOCTYPE html>
<html>
    <head>
        <meta charset="{$this->charset}" />
        <meta name="robots" content="noindex,nofollow" />
        <style>$css</style>
    </head>
    <body>
        $content
    </body>
</html>
EOF;
    }

    private function formatClass($class)
    {
        $parts = explode('\\', $class);

        return sprintf('<abbr title="%s">%s</abbr>', $class, array_pop($parts));
    }

    private function formatPath($path, $line)
    {
        $file = $this->escapeHtml(preg_match('#[^/\\\\]*+$#', $path, $file) ? $file[0] : $path);
        $fmt = $this->fileLinkFormat ?: ini_get('xdebug.file_link_format') ?: get_cfg_var('xdebug.file_link_format');

        if (!$fmt) {
            return sprintf('<span class="block trace-file-path">in <span title="%s%3$s"><strong>%s</strong>%s</span></span>', $this->escapeHtml($path), $file, 0 < $line ? ' line '.$line : '');
        }

        if (\is_string($fmt)) {
            $i = strpos($f = $fmt, '&', max(strrpos($f, '%f'), strrpos($f, '%l'))) ?: \strlen($f);
            $fmt = [substr($f, 0, $i)] + preg_split('/&([^>]++)>/', substr($f, $i), -1, PREG_SPLIT_DELIM_CAPTURE);

            for ($i = 1; isset($fmt[$i]); ++$i) {
                if (0 === strpos($path, $k = $fmt[$i++])) {
                    $path = substr_replace($path, $fmt[$i], 0, \strlen($k));
                    break;
                }
            }

            $link = strtr($fmt[0], ['%f' => $path, '%l' => $line]);
        } else {
            try {
                $link = $fmt->format($path, $line);
            } catch (\Exception $e) {
                return sprintf('<span class="block trace-file-path">in <span title="%s%3$s"><strong>%s</strong>%s</span></span>', $this->escapeHtml($path), $file, 0 < $line ? ' line '.$line : '');
            }
        }

        return sprintf('<span class="block trace-file-path">in <a href="%s" title="Go to source"><strong>%s</string>%s</a></span>', $this->escapeHtml($link), $file, 0 < $line ? ' line '.$line : '');
    }

    /**
     * Formats an array as a string.
     *
     * @param array $args The argument array
     *
     * @return string
     */
    private function formatArgs(array $args)
    {
        $result = [];
        foreach ($args as $key => $item) {
            if ('object' === $item[0]) {
                $formattedValue = sprintf('<em>object</em>(%s)', $this->formatClass($item[1]));
            } elseif ('array' === $item[0]) {
                $formattedValue = sprintf('<em>array</em>(%s)', \is_array($item[1]) ? $this->formatArgs($item[1]) : $item[1]);
            } elseif ('null' === $item[0]) {
                $formattedValue = '<em>null</em>';
            } elseif ('boolean' === $item[0]) {
                $formattedValue = '<em>'.strtolower(var_export($item[1], true)).'</em>';
            } elseif ('resource' === $item[0]) {
                $formattedValue = '<em>resource</em>';
            } else {
                $formattedValue = str_replace("\n", '', $this->escapeHtml(var_export($item[1], true)));
            }

            $result[] = \is_int($key) ? $formattedValue : sprintf("'%s' => %s", $this->escapeHtml($key), $formattedValue);
        }

        return implode(', ', $result);
    }

    /**
     * HTML-encodes a string.
     */
    private function escapeHtml($str)
    {
        return htmlspecialchars($str, ENT_COMPAT | ENT_SUBSTITUTE, $this->charset);
    }

    private function getSymfonyGhostAsSvg()
    {
        return '<svg viewBox="0 0 136 81" xmlns="http://www.w3.org/2000/svg" fill-rule="evenodd" clip-rule="evenodd" stroke-linejoin="round" stroke-miterlimit="1.4"><path d="M92.4 20.4a23.2 23.2 0 0 1 9 1.9 23.7 23.7 0 0 1 5.2 3 24.3 24.3 0 0 1 3.4 3.4 24.8 24.8 0 0 1 5 9.4c.5 1.7.8 3.4 1 5.2v14.5h.4l.5.2a7.4 7.4 0 0 0 2.5.2l.2-.2.6-.8.8-1.3-.2-.1a5.5 5.5 0 0 1-.8-.3 5.6 5.6 0 0 1-2.3-1.8 5.7 5.7 0 0 1-.9-1.6 6.5 6.5 0 0 1-.2-2.8 7.3 7.3 0 0 1 .5-2l.3-.3.8-.9.3-.3c.2-.2.5-.3.8-.3H120.7c.2 0 .3-.1.4 0h.4l.2.1.3.2.2-.4.3-.4.1-.1 1.2-1 .3-.2.4-.1.4-.1h.3l1.5.1.4.1.8.5.1.2 1 1.1v.2H129.4l.4-.2 1.4-.5h1.1c.3 0 .7.2 1 .4.2 0 .3.2.5.3l.2.2.5.3.4.6.1.3.4 1.4.1.4v.6a7.8 7.8 0 0 1-.1.6 9.9 9.9 0 0 1-.8 2.4 7.8 7.8 0 0 1-3 3.3 6.4 6.4 0 0 1-1 .5 6.1 6.1 0 0 1-.6.2l-.7.1h-.1a23.4 23.4 0 0 1-.2 1.7 14.3 14.3 0 0 1-.6 2.1l-.8 2a9.2 9.2 0 0 1-.4.6l-.7 1a9.1 9.1 0 0 1-2.3 2.2c-.9.5-2 .6-3 .7l-1.4.1h-.5l-.4.1a15.8 15.8 0 0 1-2.8-.1v4.2a9.7 9.7 0 0 1-.7 3.5 9.6 9.6 0 0 1-1.7 2.8 9.3 9.3 0 0 1-3 2.3 9 9 0 0 1-5.4.7 9 9 0 0 1-3-1 9.4 9.4 0 0 1-2.7-2.5 10 10 0 0 1-1 1.2 9.3 9.3 0 0 1-2 1.3 9 9 0 0 1-2.4 1 9 9 0 0 1-6.5-1.1A9.4 9.4 0 0 1 85 77V77a10.9 10.9 0 0 1-.6.6 9.3 9.3 0 0 1-2.7 2 9 9 0 0 1-6 .8 9 9 0 0 1-2.4-1 9.3 9.3 0 0 1-2.3-1.7 9.6 9.6 0 0 1-1.8-2.8 9.7 9.7 0 0 1-.8-3.7v-4a18.5 18.5 0 0 1-2.9.2l-1.2-.1c-1.9-.3-3.7-1-5.1-2.1A8.2 8.2 0 0 1 58 64a10.2 10.2 0 0 1-.9-1.2 15.3 15.3 0 0 1-.7-1.3 20.8 20.8 0 0 1-1.9-6.2v-.2a6.5 6.5 0 0 1-1-.3 6.1 6.1 0 0 1-.6-.3 6.6 6.6 0 0 1-.9-.5 8.2 8.2 0 0 1-2.7-3.8 10 10 0 0 1-.3-1 10.3 10.3 0 0 1-.3-1.9V47v-.4l.1-.4.6-1.4.1-.2a2 2 0 0 1 .8-.8l.3-.2.3-.2a3.2 3.2 0 0 1 1.8-.5h.4l.3.2 1.4.6.2.2.4.3.3.4.7-.7.2-.2.4-.2.6-.2h2.1l.4.2.4.2.3.2.8 1 .2-.1h.1v-.1H63l1.1.1h.3l.8.5.3.4.7 1 .2.3.1.5a11 11 0 0 1 .2 1.5c0 .8 0 1.6-.3 2.3a6 6 0 0 1-.5 1.2 5.5 5.5 0 0 1-3.3 2.5 12.3 12.3 0 0 0 1.4 3h.1l.2.1 1 .2h1.5l.5-.2H67.8l.5-.2h.1V44v-.4a26.7 26.7 0 0 1 .3-2.3 24.7 24.7 0 0 1 5.7-12.5 24.2 24.2 0 0 1 3.5-3.3 23.7 23.7 0 0 1 4.9-3 23.2 23.2 0 0 1 5.6-1.7 23.7 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0-1.6-.3-2.6-.2-1.1-.8-1.6-1.5-1.5-.8.2-1.3 1-1.6 2l-.1-.5c-.2-1-1.8-.6-1.8-.6a6.2 6.2 0 0 1 .4 1.3l.2 1c-.2.5-.6 1-1.2 1l-.2.1a7 7 0 0 0-.1-.8c-.3-1.1-1-2-1.6-1.8a.7.7 0 0 0-.4.3c-1.3.3-2.4 2-2.1 3.9-.2.9-.6 1.7-1 1.9-.5 0-.8-.5-1.1-1.8l-.1-1.2a4 4 0 0 0 0-1.7c0-.4-.4-.7-.8-.6-.7.2-.9 1.7-.5 3.8-.2 1-.6 2-1.3 2-.4.2-.8-.2-1-1l-.2-3c1.2-.5 2-1 1.8-1.7-.1-.5-.8-.7-.8-.7s0 .7-1 1.2l-.2-1.4c-.1-.6-.4-1-1.7-.6l.4 1 .2 1.5h-1v.8c0 .3.4.3 1 .2 0 1.3 0 2.7.2 3.6.3 1.4 1.2 2 2 1.7 1-.2 1.6-1.3 2-2.3.3 1.2 1 2 1.9 1.7.7-.2 1.2-1.1 1.6-2.2.4.8 1.1 1.1 2 1 1.2-.4 1.7-1.6 1.8-2.8h.2c.6-.2 1-.6 1.3-1 0 .8 0 1.5.2 2.1.1.5.3.7.6.6.5-.1 1-.9 1-.9a4 4 0 0 1-.3-1c-.3-1.3.3-3.6 1-3.7.2 0 .3.2.5.7v.8l.2 1.5v.7c.2.7.7 1.3 1.5 1 1.3-.2 2-2.6 2.1-3.9.3.2.6.2 1 .1-.6-2.2 0-6.1-.3-7.9-.1-.4-1-.5-1.7-.5h-.4zm-21.5 12c.4 0 .7.3 1 1.1.2 1.3-.3 2.6-.9 2.8-.2 0-.7 0-1-1.2v-.4c0-1.3.4-2 1-2.2zm-5.2 1c.3 0 .6.2.6.5.2.6-.3 1.3-1.2 2-.3-1.4.1-2.3.6-2.5zm18-.4c-.5.2-1-.4-1.2-1.2-.2-1 0-2.1.7-2.5v.5c.2.7.6 1.5 1.3 1.9 0 .7-.2 1.2-.7 1.3zm10-1.6c0 .5.4.7 1 .6.8-.2 1-1 .8-1.6 0-.5-.4-1-1-.8-.5.1-1 .9-.8 1.8zm-14.3-5.5c0-.4-.5-.7-1-.5-.8.2-1 1-.9 1.5.2.6.5 1 1 .8.5 0 1.1-1 1-1.8z" fill="#fff" fill-opacity=".6"/></svg>';
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Debug;

/**
 * Autoloader checking if the class is really defined in the file found.
 *
 * The ClassLoader will wrap all registered autoloaders
 * and will throw an exception if a file is found but does
 * not declare the class.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Christophe Coevoet <stof@notk.org>
 * @author Nicolas Grekas <p@tchwork.com>
 */
class DebugClassLoader
{
    private $classLoader;
    private $isFinder;
    private $loaded = [];
    private static $caseCheck;
    private static $checkedClasses = [];
    private static $final = [];
    private static $finalMethods = [];
    private static $deprecated = [];
    private static $internal = [];
    private static $internalMethods = [];
    private static $php7Reserved = ['int' => 1, 'float' => 1, 'bool' => 1, 'string' => 1, 'true' => 1, 'false' => 1, 'null' => 1];
    private static $darwinCache = ['/' => ['/', []]];

    public function __construct(callable $classLoader)
    {
        $this->classLoader = $classLoader;
        $this->isFinder = \is_array($classLoader) && method_exists($classLoader[0], 'findFile');

        if (!isset(self::$caseCheck)) {
            $file = file_exists(__FILE__) ? __FILE__ : rtrim(realpath('.'), \DIRECTORY_SEPARATOR);
            $i = strrpos($file, \DIRECTORY_SEPARATOR);
            $dir = substr($file, 0, 1 + $i);
            $file = substr($file, 1 + $i);
            $test = strtoupper($file) === $file ? strtolower($file) : strtoupper($file);
            $test = realpath($dir.$test);

            if (false === $test || false === $i) {
                // filesystem is case sensitive
                self::$caseCheck = 0;
            } elseif (substr($test, -\strlen($file)) === $file) {
                // filesystem is case insensitive and realpath() normalizes the case of characters
                self::$caseCheck = 1;
            } elseif (false !== stripos(PHP_OS, 'darwin')) {
                // on MacOSX, HFS+ is case insensitive but realpath() doesn't normalize the case of characters
                self::$caseCheck = 2;
            } else {
                // filesystem case checks failed, fallback to disabling them
                self::$caseCheck = 0;
            }
        }
    }

    /**
     * Gets the wrapped class loader.
     *
     * @return callable The wrapped class loader
     */
    public function getClassLoader()
    {
        return $this->classLoader;
    }

    /**
     * Wraps all autoloaders.
     */
    public static function enable()
    {
        // Ensures we don't hit https://bugs.php.net/42098
        class_exists('Symfony\Component\Debug\ErrorHandler');
        class_exists('Psr\Log\LogLevel');

        if (!\is_array($functions = spl_autoload_functions())) {
            return;
        }

        foreach ($functions as $function) {
            spl_autoload_unregister($function);
        }

        foreach ($functions as $function) {
            if (!\is_array($function) || !$function[0] instanceof self) {
                $function = [new static($function), 'loadClass'];
            }

            spl_autoload_register($function);
        }
    }

    /**
     * Disables the wrapping.
     */
    public static function disable()
    {
        if (!\is_array($functions = spl_autoload_functions())) {
            return;
        }

        foreach ($functions as $function) {
            spl_autoload_unregister($function);
        }

        foreach ($functions as $function) {
            if (\is_array($function) && $function[0] instanceof self) {
                $function = $function[0]->getClassLoader();
            }

            spl_autoload_register($function);
        }
    }

    /**
     * @return string|null
     */
    public function findFile($class)
    {
        return $this->isFinder ? $this->classLoader[0]->findFile($class) ?: null : null;
    }

    /**
     * Loads the given class or interface.
     *
     * @param string $class The name of the class
     *
     * @throws \RuntimeException
     */
    public function loadClass($class)
    {
        $e = error_reporting(error_reporting() | E_PARSE | E_ERROR | E_CORE_ERROR | E_COMPILE_ERROR);

        try {
            if ($this->isFinder && !isset($this->loaded[$class])) {
                $this->loaded[$class] = true;
                if (!$file = $this->classLoader[0]->findFile($class) ?: false) {
                    // no-op
                } elseif (\function_exists('opcache_is_script_cached') && @opcache_is_script_cached($file)) {
                    include $file;

                    return;
                } elseif (false === include $file) {
                    return;
                }
            } else {
                \call_user_func($this->classLoader, $class);
                $file = false;
            }
        } finally {
            error_reporting($e);
        }

        $this->checkClass($class, $file);
    }

    private function checkClass($class, $file = null)
    {
        $exists = null === $file || class_exists($class, false) || interface_exists($class, false) || trait_exists($class, false);

        if (null !== $file && $class && '\\' === $class[0]) {
            $class = substr($class, 1);
        }

        if ($exists) {
            if (isset(self::$checkedClasses[$class])) {
                return;
            }
            self::$checkedClasses[$class] = true;

            $refl = new \ReflectionClass($class);
            if (null === $file && $refl->isInternal()) {
                return;
            }
            $name = $refl->getName();

            if ($name !== $class && 0 === strcasecmp($name, $class)) {
                throw new \RuntimeException(sprintf('Case mismatch between loaded and declared class names: "%s" vs "%s".', $class, $name));
            }

            $deprecations = $this->checkAnnotations($refl, $name);

            if (isset(self::$php7Reserved[strtolower($refl->getShortName())])) {
                $deprecations[] = sprintf('The "%s" class uses the reserved name "%s", it will break on PHP 7 and higher', $name, $refl->getShortName());
            }

            foreach ($deprecations as $message) {
                @trigger_error($message, E_USER_DEPRECATED);
            }
        }

        if (!$file) {
            return;
        }

        if (!$exists) {
            if (false !== strpos($class, '/')) {
                throw new \RuntimeException(sprintf('Trying to autoload a class with an invalid name "%s". Be careful that the namespace separator is "\" in PHP, not "/".', $class));
            }

            throw new \RuntimeException(sprintf('The autoloader expected class "%s" to be defined in file "%s". The file was found but the class was not in it, the class name or namespace probably has a typo.', $class, $file));
        }

        if (self::$caseCheck && $message = $this->checkCase($refl, $file, $class)) {
            throw new \RuntimeException(sprintf('Case mismatch between class and real file names: "%s" vs "%s" in "%s".', $message[0], $message[1], $message[2]));
        }
    }

    public function checkAnnotations(\ReflectionClass $refl, $class)
    {
        $deprecations = [];

        // Don't trigger deprecations for classes in the same vendor
        if (2 > $len = 1 + (strpos($class, '\\') ?: strpos($class, '_'))) {
            $len = 0;
            $ns = '';
        } else {
            $ns = str_replace('_', '\\', substr($class, 0, $len));
        }

        // Detect annotations on the class
        if (false !== $doc = $refl->getDocComment()) {
            foreach (['final', 'deprecated', 'internal'] as $annotation) {
                if (false !== strpos($doc, $annotation) && preg_match('#\n\s+\* @'.$annotation.'(?:( .+?)\.?)?\r?\n\s+\*(?: @|/$|\r?\n)#s', $doc, $notice)) {
                    self::${$annotation}[$class] = isset($notice[1]) ? preg_replace('#\.?\r?\n( \*)? *(?= |\r?\n|$)#', '', $notice[1]) : '';
                }
            }
        }

        $parent = get_parent_class($class);
        $parentAndOwnInterfaces = $this->getOwnInterfaces($class, $parent);
        if ($parent) {
            $parentAndOwnInterfaces[$parent] = $parent;

            if (!isset(self::$checkedClasses[$parent])) {
                $this->checkClass($parent);
            }

            if (isset(self::$final[$parent])) {
                $deprecations[] = sprintf('The "%s" class is considered final%s. It may change without further notice as of its next major version. You should not extend it from "%s".', $parent, self::$final[$parent], $class);
            }
        }

        // Detect if the parent is annotated
        foreach ($parentAndOwnInterfaces + class_uses($class, false) as $use) {
            if (!isset(self::$checkedClasses[$use])) {
                $this->checkClass($use);
            }
            if (isset(self::$deprecated[$use]) && strncmp($ns, str_replace('_', '\\', $use), $len) && !isset(self::$deprecated[$class])) {
                $type = class_exists($class, false) ? 'class' : (interface_exists($class, false) ? 'interface' : 'trait');
                $verb = class_exists($use, false) || interface_exists($class, false) ? 'extends' : (interface_exists($use, false) ? 'implements' : 'uses');

                $deprecations[] = sprintf('The "%s" %s %s "%s" that is deprecated%s.', $class, $type, $verb, $use, self::$deprecated[$use]);
            }
            if (isset(self::$internal[$use]) && strncmp($ns, str_replace('_', '\\', $use), $len)) {
                $deprecations[] = sprintf('The "%s" %s is considered internal%s. It may change without further notice. You should not use it from "%s".', $use, class_exists($use, false) ? 'class' : (interface_exists($use, false) ? 'interface' : 'trait'), self::$internal[$use], $class);
            }
        }

        if (trait_exists($class)) {
            return $deprecations;
        }

        // Inherit @final and @internal annotations for methods
        self::$finalMethods[$class] = [];
        self::$internalMethods[$class] = [];
        foreach ($parentAndOwnInterfaces as $use) {
            foreach (['finalMethods', 'internalMethods'] as $property) {
                if (isset(self::${$property}[$use])) {
                    self::${$property}[$class] = self::${$property}[$class] ? self::${$property}[$use] + self::${$property}[$class] : self::${$property}[$use];
                }
            }
        }

        foreach ($refl->getMethods(\ReflectionMethod::IS_PUBLIC | \ReflectionMethod::IS_PROTECTED) as $method) {
            if ($method->class !== $class) {
                continue;
            }

            if ($parent && isset(self::$finalMethods[$parent][$method->name])) {
                list($declaringClass, $message) = self::$finalMethods[$parent][$method->name];
                $deprecations[] = sprintf('The "%s::%s()" method is considered final%s. It may change without further notice as of its next major version. You should not extend it from "%s".', $declaringClass, $method->name, $message, $class);
            }

            if (isset(self::$internalMethods[$class][$method->name])) {
                list($declaringClass, $message) = self::$internalMethods[$class][$method->name];
                if (strncmp($ns, $declaringClass, $len)) {
                    $deprecations[] = sprintf('The "%s::%s()" method is considered internal%s. It may change without further notice. You should not extend it from "%s".', $declaringClass, $method->name, $message, $class);
                }
            }

            // Detect method annotations
            if (false === $doc = $method->getDocComment()) {
                continue;
            }

            foreach (['final', 'internal'] as $annotation) {
                if (false !== strpos($doc, $annotation) && preg_match('#\n\s+\* @'.$annotation.'(?:( .+?)\.?)?\r?\n\s+\*(?: @|/$|\r?\n)#s', $doc, $notice)) {
                    $message = isset($notice[1]) ? preg_replace('#\.?\r?\n( \*)? *(?= |\r?\n|$)#', '', $notice[1]) : '';
                    self::${$annotation.'Methods'}[$class][$method->name] = [$class, $message];
                }
            }
        }

        return $deprecations;
    }

    /**
     * @param string $file
     * @param string $class
     *
     * @return array|null
     */
    public function checkCase(\ReflectionClass $refl, $file, $class)
    {
        $real = explode('\\', $class.strrchr($file, '.'));
        $tail = explode(\DIRECTORY_SEPARATOR, str_replace('/', \DIRECTORY_SEPARATOR, $file));

        $i = \count($tail) - 1;
        $j = \count($real) - 1;

        while (isset($tail[$i], $real[$j]) && $tail[$i] === $real[$j]) {
            --$i;
            --$j;
        }

        array_splice($tail, 0, $i + 1);

        if (!$tail) {
            return null;
        }

        $tail = \DIRECTORY_SEPARATOR.implode(\DIRECTORY_SEPARATOR, $tail);
        $tailLen = \strlen($tail);
        $real = $refl->getFileName();

        if (2 === self::$caseCheck) {
            $real = $this->darwinRealpath($real);
        }

        if (0 === substr_compare($real, $tail, -$tailLen, $tailLen, true)
            && 0 !== substr_compare($real, $tail, -$tailLen, $tailLen, false)
        ) {
            return [substr($tail, -$tailLen + 1), substr($real, -$tailLen + 1), substr($real, 0, -$tailLen + 1)];
        }

        return null;
    }

    /**
     * `realpath` on MacOSX doesn't normalize the case of characters.
     */
    private function darwinRealpath($real)
    {
        $i = 1 + strrpos($real, '/');
        $file = substr($real, $i);
        $real = substr($real, 0, $i);

        if (isset(self::$darwinCache[$real])) {
            $kDir = $real;
        } else {
            $kDir = strtolower($real);

            if (isset(self::$darwinCache[$kDir])) {
                $real = self::$darwinCache[$kDir][0];
            } else {
                $dir = getcwd();
                chdir($real);
                $real = getcwd().'/';
                chdir($dir);

                $dir = $real;
                $k = $kDir;
                $i = \strlen($dir) - 1;
                while (!isset(self::$darwinCache[$k])) {
                    self::$darwinCache[$k] = [$dir, []];
                    self::$darwinCache[$dir] = &self::$darwinCache[$k];

                    while ('/' !== $dir[--$i]) {
                    }
                    $k = substr($k, 0, ++$i);
                    $dir = substr($dir, 0, $i--);
                }
            }
        }

        $dirFiles = self::$darwinCache[$kDir][1];

        if (!isset($dirFiles[$file]) && ') : eval()\'d code' === substr($file, -17)) {
            // Get the file name from "file_name.php(123) : eval()'d code"
            $file = substr($file, 0, strrpos($file, '(', -17));
        }

        if (isset($dirFiles[$file])) {
            return $real .= $dirFiles[$file];
        }

        $kFile = strtolower($file);

        if (!isset($dirFiles[$kFile])) {
            foreach (scandir($real, 2) as $f) {
                if ('.' !== $f[0]) {
                    $dirFiles[$f] = $f;
                    if ($f === $file) {
                        $kFile = $k = $file;
                    } elseif ($f !== $k = strtolower($f)) {
                        $dirFiles[$k] = $f;
                    }
                }
            }
            self::$darwinCache[$kDir][1] = $dirFiles;
        }

        return $real .= $dirFiles[$kFile];
    }

    /**
     * `class_implements` includes interfaces from the parents so we have to manually exclude them.
     *
     * @param string       $class
     * @param string|false $parent
     *
     * @return string[]
     */
    private function getOwnInterfaces($class, $parent)
    {
        $ownInterfaces = class_implements($class, false);

        if ($parent) {
            foreach (class_implements($parent, false) as $interface) {
                unset($ownInterfaces[$interface]);
            }
        }

        foreach ($ownInterfaces as $interface) {
            foreach (class_implements($interface) as $interface) {
                unset($ownInterfaces[$interface]);
            }
        }

        return $ownInterfaces;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Debug;

use Psr\Log\AbstractLogger;

/**
 * A buffering logger that stacks logs for later.
 *
 * @author Nicolas Grekas <p@tchwork.com>
 */
class BufferingLogger extends AbstractLogger
{
    private $logs = [];

    public function log($level, $message, array $context = [])
    {
        $this->logs[] = [$level, $message, $context];
    }

    public function cleanLogs()
    {
        $logs = $this->logs;
        $this->logs = [];

        return $logs;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Debug;

use Psr\Log\LoggerInterface;
use Psr\Log\LogLevel;
use Symfony\Component\Debug\Exception\ContextErrorException;
use Symfony\Component\Debug\Exception\FatalErrorException;
use Symfony\Component\Debug\Exception\FatalThrowableError;
use Symfony\Component\Debug\Exception\OutOfMemoryException;
use Symfony\Component\Debug\Exception\SilencedErrorContext;
use Symfony\Component\Debug\FatalErrorHandler\ClassNotFoundFatalErrorHandler;
use Symfony\Component\Debug\FatalErrorHandler\FatalErrorHandlerInterface;
use Symfony\Component\Debug\FatalErrorHandler\UndefinedFunctionFatalErrorHandler;
use Symfony\Component\Debug\FatalErrorHandler\UndefinedMethodFatalErrorHandler;

/**
 * A generic ErrorHandler for the PHP engine.
 *
 * Provides five bit fields that control how errors are handled:
 * - thrownErrors: errors thrown as \ErrorException
 * - loggedErrors: logged errors, when not @-silenced
 * - scopedErrors: errors thrown or logged with their local context
 * - tracedErrors: errors logged with their stack trace
 * - screamedErrors: never @-silenced errors
 *
 * Each error level can be logged by a dedicated PSR-3 logger object.
 * Screaming only applies to logging.
 * Throwing takes precedence over logging.
 * Uncaught exceptions are logged as E_ERROR.
 * E_DEPRECATED and E_USER_DEPRECATED levels never throw.
 * E_RECOVERABLE_ERROR and E_USER_ERROR levels always throw.
 * Non catchable errors that can be detected at shutdown time are logged when the scream bit field allows so.
 * As errors have a performance cost, repeated errors are all logged, so that the developer
 * can see them and weight them as more important to fix than others of the same level.
 *
 * @author Nicolas Grekas <p@tchwork.com>
 * @author GrÃ©goire Pineau <lyrixx@lyrixx.info>
 */
class ErrorHandler
{
    private $levels = [
        E_DEPRECATED => 'Deprecated',
        E_USER_DEPRECATED => 'User Deprecated',
        E_NOTICE => 'Notice',
        E_USER_NOTICE => 'User Notice',
        E_STRICT => 'Runtime Notice',
        E_WARNING => 'Warning',
        E_USER_WARNING => 'User Warning',
        E_COMPILE_WARNING => 'Compile Warning',
        E_CORE_WARNING => 'Core Warning',
        E_USER_ERROR => 'User Error',
        E_RECOVERABLE_ERROR => 'Catchable Fatal Error',
        E_COMPILE_ERROR => 'Compile Error',
        E_PARSE => 'Parse Error',
        E_ERROR => 'Error',
        E_CORE_ERROR => 'Core Error',
    ];

    private $loggers = [
        E_DEPRECATED => [null, LogLevel::INFO],
        E_USER_DEPRECATED => [null, LogLevel::INFO],
        E_NOTICE => [null, LogLevel::WARNING],
        E_USER_NOTICE => [null, LogLevel::WARNING],
        E_STRICT => [null, LogLevel::WARNING],
        E_WARNING => [null, LogLevel::WARNING],
        E_USER_WARNING => [null, LogLevel::WARNING],
        E_COMPILE_WARNING => [null, LogLevel::WARNING],
        E_CORE_WARNING => [null, LogLevel::WARNING],
        E_USER_ERROR => [null, LogLevel::CRITICAL],
        E_RECOVERABLE_ERROR => [null, LogLevel::CRITICAL],
        E_COMPILE_ERROR => [null, LogLevel::CRITICAL],
        E_PARSE => [null, LogLevel::CRITICAL],
        E_ERROR => [null, LogLevel::CRITICAL],
        E_CORE_ERROR => [null, LogLevel::CRITICAL],
    ];

    private $thrownErrors = 0x1FFF; // E_ALL - E_DEPRECATED - E_USER_DEPRECATED
    private $scopedErrors = 0x1FFF; // E_ALL - E_DEPRECATED - E_USER_DEPRECATED
    private $tracedErrors = 0x77FB; // E_ALL - E_STRICT - E_PARSE
    private $screamedErrors = 0x55; // E_ERROR + E_CORE_ERROR + E_COMPILE_ERROR + E_PARSE
    private $loggedErrors = 0;
    private $traceReflector;

    private $isRecursive = 0;
    private $isRoot = false;
    private $exceptionHandler;
    private $bootstrappingLogger;

    private static $reservedMemory;
    private static $stackedErrors = [];
    private static $stackedErrorLevels = [];
    private static $toStringException = null;
    private static $silencedErrorCache = [];
    private static $silencedErrorCount = 0;
    private static $exitCode = 0;

    /**
     * Registers the error handler.
     *
     * @param self|null $handler The handler to register
     * @param bool      $replace Whether to replace or not any existing handler
     *
     * @return self The registered error handler
     */
    public static function register(self $handler = null, $replace = true)
    {
        if (null === self::$reservedMemory) {
            self::$reservedMemory = str_repeat('x', 10240);
            register_shutdown_function(__CLASS__.'::handleFatalError');
        }

        if ($handlerIsNew = null === $handler) {
            $handler = new static();
        }

        if (null === $prev = set_error_handler([$handler, 'handleError'])) {
            restore_error_handler();
            // Specifying the error types earlier would expose us to https://bugs.php.net/63206
            set_error_handler([$handler, 'handleError'], $handler->thrownErrors | $handler->loggedErrors);
            $handler->isRoot = true;
        }

        if ($handlerIsNew && \is_array($prev) && $prev[0] instanceof self) {
            $handler = $prev[0];
            $replace = false;
        }
        if (!$replace && $prev) {
            restore_error_handler();
            $handlerIsRegistered = \is_array($prev) && $handler === $prev[0];
        } else {
            $handlerIsRegistered = true;
        }
        if (\is_array($prev = set_exception_handler([$handler, 'handleException'])) && $prev[0] instanceof self) {
            restore_exception_handler();
            if (!$handlerIsRegistered) {
                $handler = $prev[0];
            } elseif ($handler !== $prev[0] && $replace) {
                set_exception_handler([$handler, 'handleException']);
                $p = $prev[0]->setExceptionHandler(null);
                $handler->setExceptionHandler($p);
                $prev[0]->setExceptionHandler($p);
            }
        } else {
            $handler->setExceptionHandler($prev);
        }

        $handler->throwAt(E_ALL & $handler->thrownErrors, true);

        return $handler;
    }

    public function __construct(BufferingLogger $bootstrappingLogger = null)
    {
        if ($bootstrappingLogger) {
            $this->bootstrappingLogger = $bootstrappingLogger;
            $this->setDefaultLogger($bootstrappingLogger);
        }
        $this->traceReflector = new \ReflectionProperty('Exception', 'trace');
        $this->traceReflector->setAccessible(true);
    }

    /**
     * Sets a logger to non assigned errors levels.
     *
     * @param LoggerInterface $logger  A PSR-3 logger to put as default for the given levels
     * @param array|int       $levels  An array map of E_* to LogLevel::* or an integer bit field of E_* constants
     * @param bool            $replace Whether to replace or not any existing logger
     */
    public function setDefaultLogger(LoggerInterface $logger, $levels = E_ALL, $replace = false)
    {
        $loggers = [];

        if (\is_array($levels)) {
            foreach ($levels as $type => $logLevel) {
                if (empty($this->loggers[$type][0]) || $replace || $this->loggers[$type][0] === $this->bootstrappingLogger) {
                    $loggers[$type] = [$logger, $logLevel];
                }
            }
        } else {
            if (null === $levels) {
                $levels = E_ALL;
            }
            foreach ($this->loggers as $type => $log) {
                if (($type & $levels) && (empty($log[0]) || $replace || $log[0] === $this->bootstrappingLogger)) {
                    $log[0] = $logger;
                    $loggers[$type] = $log;
                }
            }
        }

        $this->setLoggers($loggers);
    }

    /**
     * Sets a logger for each error level.
     *
     * @param array $loggers Error levels to [LoggerInterface|null, LogLevel::*] map
     *
     * @return array The previous map
     *
     * @throws \InvalidArgumentException
     */
    public function setLoggers(array $loggers)
    {
        $prevLogged = $this->loggedErrors;
        $prev = $this->loggers;
        $flush = [];

        foreach ($loggers as $type => $log) {
            if (!isset($prev[$type])) {
                throw new \InvalidArgumentException('Unknown error type: '.$type);
            }
            if (!\is_array($log)) {
                $log = [$log];
            } elseif (!\array_key_exists(0, $log)) {
                throw new \InvalidArgumentException('No logger provided');
            }
            if (null === $log[0]) {
                $this->loggedErrors &= ~$type;
            } elseif ($log[0] instanceof LoggerInterface) {
                $this->loggedErrors |= $type;
            } else {
                throw new \InvalidArgumentException('Invalid logger provided');
            }
            $this->loggers[$type] = $log + $prev[$type];

            if ($this->bootstrappingLogger && $prev[$type][0] === $this->bootstrappingLogger) {
                $flush[$type] = $type;
            }
        }
        $this->reRegister($prevLogged | $this->thrownErrors);

        if ($flush) {
            foreach ($this->bootstrappingLogger->cleanLogs() as $log) {
                $type = $log[2]['exception'] instanceof \ErrorException ? $log[2]['exception']->getSeverity() : E_ERROR;
                if (!isset($flush[$type])) {
                    $this->bootstrappingLogger->log($log[0], $log[1], $log[2]);
                } elseif ($this->loggers[$type][0]) {
                    $this->loggers[$type][0]->log($this->loggers[$type][1], $log[1], $log[2]);
                }
            }
        }

        return $prev;
    }

    /**
     * Sets a user exception handler.
     *
     * @param callable $handler A handler that will be called on Exception
     *
     * @return callable|null The previous exception handler
     */
    public function setExceptionHandler(callable $handler = null)
    {
        $prev = $this->exceptionHandler;
        $this->exceptionHandler = $handler;

        return $prev;
    }

    /**
     * Sets the PHP error levels that throw an exception when a PHP error occurs.
     *
     * @param int  $levels  A bit field of E_* constants for thrown errors
     * @param bool $replace Replace or amend the previous value
     *
     * @return int The previous value
     */
    public function throwAt($levels, $replace = false)
    {
        $prev = $this->thrownErrors;
        $this->thrownErrors = ($levels | E_RECOVERABLE_ERROR | E_USER_ERROR) & ~E_USER_DEPRECATED & ~E_DEPRECATED;
        if (!$replace) {
            $this->thrownErrors |= $prev;
        }
        $this->reRegister($prev | $this->loggedErrors);

        return $prev;
    }

    /**
     * Sets the PHP error levels for which local variables are preserved.
     *
     * @param int  $levels  A bit field of E_* constants for scoped errors
     * @param bool $replace Replace or amend the previous value
     *
     * @return int The previous value
     */
    public function scopeAt($levels, $replace = false)
    {
        $prev = $this->scopedErrors;
        $this->scopedErrors = (int) $levels;
        if (!$replace) {
            $this->scopedErrors |= $prev;
        }

        return $prev;
    }

    /**
     * Sets the PHP error levels for which the stack trace is preserved.
     *
     * @param int  $levels  A bit field of E_* constants for traced errors
     * @param bool $replace Replace or amend the previous value
     *
     * @return int The previous value
     */
    public function traceAt($levels, $replace = false)
    {
        $prev = $this->tracedErrors;
        $this->tracedErrors = (int) $levels;
        if (!$replace) {
            $this->tracedErrors |= $prev;
        }

        return $prev;
    }

    /**
     * Sets the error levels where the @-operator is ignored.
     *
     * @param int  $levels  A bit field of E_* constants for screamed errors
     * @param bool $replace Replace or amend the previous value
     *
     * @return int The previous value
     */
    public function screamAt($levels, $replace = false)
    {
        $prev = $this->screamedErrors;
        $this->screamedErrors = (int) $levels;
        if (!$replace) {
            $this->screamedErrors |= $prev;
        }

        return $prev;
    }

    /**
     * Re-registers as a PHP error handler if levels changed.
     */
    private function reRegister($prev)
    {
        if ($prev !== $this->thrownErrors | $this->loggedErrors) {
            $handler = set_error_handler('var_dump');
            $handler = \is_array($handler) ? $handler[0] : null;
            restore_error_handler();
            if ($handler === $this) {
                restore_error_handler();
                if ($this->isRoot) {
                    set_error_handler([$this, 'handleError'], $this->thrownErrors | $this->loggedErrors);
                } else {
                    set_error_handler([$this, 'handleError']);
                }
            }
        }
    }

    /**
     * Handles errors by filtering then logging them according to the configured bit fields.
     *
     * @param int    $type    One of the E_* constants
     * @param string $message
     * @param string $file
     * @param int    $line
     *
     * @return bool Returns false when no handling happens so that the PHP engine can handle the error itself
     *
     * @throws \ErrorException When $this->thrownErrors requests so
     *
     * @internal
     */
    public function handleError($type, $message, $file, $line)
    {
        if (\PHP_VERSION_ID >= 70300 && E_WARNING === $type && '"' === $message[0] && false !== strpos($message, '" targeting switch is equivalent to "break')) {
            $type = E_DEPRECATED;
        }

        // Level is the current error reporting level to manage silent error.
        $level = error_reporting();
        $silenced = 0 === ($level & $type);
        // Strong errors are not authorized to be silenced.
        $level |= E_RECOVERABLE_ERROR | E_USER_ERROR | E_DEPRECATED | E_USER_DEPRECATED;
        $log = $this->loggedErrors & $type;
        $throw = $this->thrownErrors & $type & $level;
        $type &= $level | $this->screamedErrors;

        if (!$type || (!$log && !$throw)) {
            return !$silenced && $type && $log;
        }
        $scope = $this->scopedErrors & $type;

        if (4 < $numArgs = \func_num_args()) {
            $context = $scope ? (func_get_arg(4) ?: []) : [];
            $backtrace = 5 < $numArgs ? func_get_arg(5) : null; // defined on HHVM
        } else {
            $context = [];
            $backtrace = null;
        }

        if (isset($context['GLOBALS']) && $scope) {
            $e = $context;                  // Whatever the signature of the method,
            unset($e['GLOBALS'], $context); // $context is always a reference in 5.3
            $context = $e;
        }

        if (null !== $backtrace && $type & E_ERROR) {
            // E_ERROR fatal errors are triggered on HHVM when
            // hhvm.error_handling.call_user_handler_on_fatals=1
            // which is the way to get their backtrace.
            $this->handleFatalError(compact('type', 'message', 'file', 'line', 'backtrace'));

            return true;
        }

        $logMessage = $this->levels[$type].': '.$message;

        if (null !== self::$toStringException) {
            $errorAsException = self::$toStringException;
            self::$toStringException = null;
        } elseif (!$throw && !($type & $level)) {
            if (!isset(self::$silencedErrorCache[$id = $file.':'.$line])) {
                $lightTrace = $this->tracedErrors & $type ? $this->cleanTrace(debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 3), $type, $file, $line, false) : [];
                $errorAsException = new SilencedErrorContext($type, $file, $line, $lightTrace);
            } elseif (isset(self::$silencedErrorCache[$id][$message])) {
                $lightTrace = null;
                $errorAsException = self::$silencedErrorCache[$id][$message];
                ++$errorAsException->count;
            } else {
                $lightTrace = [];
                $errorAsException = null;
            }

            if (100 < ++self::$silencedErrorCount) {
                self::$silencedErrorCache = $lightTrace = [];
                self::$silencedErrorCount = 1;
            }
            if ($errorAsException) {
                self::$silencedErrorCache[$id][$message] = $errorAsException;
            }
            if (null === $lightTrace) {
                return true;
            }
        } else {
            if ($scope) {
                $errorAsException = new ContextErrorException($logMessage, 0, $type, $file, $line, $context);
            } else {
                $errorAsException = new \ErrorException($logMessage, 0, $type, $file, $line);
            }

            // Clean the trace by removing function arguments and the first frames added by the error handler itself.
            if ($throw || $this->tracedErrors & $type) {
                $backtrace = $backtrace ?: $errorAsException->getTrace();
                $lightTrace = $this->cleanTrace($backtrace, $type, $file, $line, $throw);
                $this->traceReflector->setValue($errorAsException, $lightTrace);
            } else {
                $this->traceReflector->setValue($errorAsException, []);
            }
        }

        if ($throw) {
            if (\PHP_VERSION_ID < 70400 && E_USER_ERROR & $type) {
                for ($i = 1; isset($backtrace[$i]); ++$i) {
                    if (isset($backtrace[$i]['function'], $backtrace[$i]['type'], $backtrace[$i - 1]['function'])
                        && '__toString' === $backtrace[$i]['function']
                        && '->' === $backtrace[$i]['type']
                        && !isset($backtrace[$i - 1]['class'])
                        && ('trigger_error' === $backtrace[$i - 1]['function'] || 'user_error' === $backtrace[$i - 1]['function'])
                    ) {
                        // Here, we know trigger_error() has been called from __toString().
                        // HHVM is fine with throwing from __toString() but PHP triggers a fatal error instead.
                        // A small convention allows working around the limitation:
                        // given a caught $e exception in __toString(), quitting the method with
                        // `return trigger_error($e, E_USER_ERROR);` allows this error handler
                        // to make $e get through the __toString() barrier.

                        foreach ($context as $e) {
                            if (($e instanceof \Exception || $e instanceof \Throwable) && $e->__toString() === $message) {
                                if (1 === $i) {
                                    // On HHVM
                                    $errorAsException = $e;
                                    break;
                                }
                                self::$toStringException = $e;

                                return true;
                            }
                        }

                        if (1 < $i) {
                            // On PHP (not on HHVM), display the original error message instead of the default one.
                            $this->handleException($errorAsException);

                            // Stop the process by giving back the error to the native handler.
                            return false;
                        }
                    }
                }
            }

            throw $errorAsException;
        }

        if ($this->isRecursive) {
            $log = 0;
        } elseif (self::$stackedErrorLevels) {
            self::$stackedErrors[] = [
                $this->loggers[$type][0],
                ($type & $level) ? $this->loggers[$type][1] : LogLevel::DEBUG,
                $logMessage,
                $errorAsException ? ['exception' => $errorAsException] : [],
            ];
        } else {
            if (!\defined('HHVM_VERSION')) {
                $currentErrorHandler = set_error_handler('var_dump');
                restore_error_handler();
            }

            try {
                $this->isRecursive = true;
                $level = ($type & $level) ? $this->loggers[$type][1] : LogLevel::DEBUG;
                $this->loggers[$type][0]->log($level, $logMessage, $errorAsException ? ['exception' => $errorAsException] : []);
            } finally {
                $this->isRecursive = false;

                if (!\defined('HHVM_VERSION')) {
                    set_error_handler($currentErrorHandler);
                }
            }
        }

        return !$silenced && $type && $log;
    }

    /**
     * Handles an exception by logging then forwarding it to another handler.
     *
     * @param \Exception|\Throwable $exception An exception to handle
     * @param array                 $error     An array as returned by error_get_last()
     *
     * @internal
     */
    public function handleException($exception, array $error = null)
    {
        if (null === $error) {
            self::$exitCode = 255;
        }
        if (!$exception instanceof \Exception) {
            $exception = new FatalThrowableError($exception);
        }
        $type = $exception instanceof FatalErrorException ? $exception->getSeverity() : E_ERROR;
        $handlerException = null;

        if (($this->loggedErrors & $type) || $exception instanceof FatalThrowableError) {
            if ($exception instanceof FatalErrorException) {
                if ($exception instanceof FatalThrowableError) {
                    $error = [
                        'type' => $type,
                        'message' => $message = $exception->getMessage(),
                        'file' => $exception->getFile(),
                        'line' => $exception->getLine(),
                    ];
                } else {
                    $message = 'Fatal '.$exception->getMessage();
                }
            } elseif ($exception instanceof \ErrorException) {
                $message = 'Uncaught '.$exception->getMessage();
            } else {
                $message = 'Uncaught Exception: '.$exception->getMessage();
            }
        }
        if ($this->loggedErrors & $type) {
            try {
                $this->loggers[$type][0]->log($this->loggers[$type][1], $message, ['exception' => $exception]);
            } catch (\Exception $handlerException) {
            } catch (\Throwable $handlerException) {
            }
        }
        if ($exception instanceof FatalErrorException && !$exception instanceof OutOfMemoryException && $error) {
            foreach ($this->getFatalErrorHandlers() as $handler) {
                if ($e = $handler->handleError($error, $exception)) {
                    $exception = $e;
                    break;
                }
            }
        }
        $exceptionHandler = $this->exceptionHandler;
        $this->exceptionHandler = null;
        try {
            if (null !== $exceptionHandler) {
                $exceptionHandler($exception);

                return;
            }
            $handlerException = $handlerException ?: $exception;
        } catch (\Exception $handlerException) {
        } catch (\Throwable $handlerException) {
        }
        if ($exception === $handlerException) {
            self::$reservedMemory = null; // Disable the fatal error handler
            throw $exception; // Give back $exception to the native handler
        }
        $this->handleException($handlerException);
    }

    /**
     * Shutdown registered function for handling PHP fatal errors.
     *
     * @param array $error An array as returned by error_get_last()
     *
     * @internal
     */
    public static function handleFatalError(array $error = null)
    {
        if (null === self::$reservedMemory) {
            return;
        }

        $handler = self::$reservedMemory = null;
        $handlers = [];
        $previousHandler = null;
        $sameHandlerLimit = 10;

        while (!\is_array($handler) || !$handler[0] instanceof self) {
            $handler = set_exception_handler('var_dump');
            restore_exception_handler();

            if (!$handler) {
                break;
            }
            restore_exception_handler();

            if ($handler !== $previousHandler) {
                array_unshift($handlers, $handler);
                $previousHandler = $handler;
            } elseif (0 === --$sameHandlerLimit) {
                $handler = null;
                break;
            }
        }
        foreach ($handlers as $h) {
            set_exception_handler($h);
        }
        if (!$handler) {
            return;
        }
        if ($handler !== $h) {
            $handler[0]->setExceptionHandler($h);
        }
        $handler = $handler[0];
        $handlers = [];

        if ($exit = null === $error) {
            $error = error_get_last();
        }

        try {
            while (self::$stackedErrorLevels) {
                static::unstackErrors();
            }
        } catch (\Exception $exception) {
            // Handled below
        } catch (\Throwable $exception) {
            // Handled below
        }

        if ($error && $error['type'] &= E_PARSE | E_ERROR | E_CORE_ERROR | E_COMPILE_ERROR) {
            // Let's not throw anymore but keep logging
            $handler->throwAt(0, true);
            $trace = isset($error['backtrace']) ? $error['backtrace'] : null;

            if (0 === strpos($error['message'], 'Allowed memory') || 0 === strpos($error['message'], 'Out of memory')) {
                $exception = new OutOfMemoryException($handler->levels[$error['type']].': '.$error['message'], 0, $error['type'], $error['file'], $error['line'], 2, false, $trace);
            } else {
                $exception = new FatalErrorException($handler->levels[$error['type']].': '.$error['message'], 0, $error['type'], $error['file'], $error['line'], 2, true, $trace);
            }
        }

        try {
            if (isset($exception)) {
                self::$exitCode = 255;
                $handler->handleException($exception, $error);
            }
        } catch (FatalErrorException $e) {
            // Ignore this re-throw
        }

        if ($exit && self::$exitCode) {
            $exitCode = self::$exitCode;
            register_shutdown_function('register_shutdown_function', function () use ($exitCode) { exit($exitCode); });
        }
    }

    /**
     * Configures the error handler for delayed handling.
     * Ensures also that non-catchable fatal errors are never silenced.
     *
     * As shown by http://bugs.php.net/42098 and http://bugs.php.net/60724
     * PHP has a compile stage where it behaves unusually. To workaround it,
     * we plug an error handler that only stacks errors for later.
     *
     * The most important feature of this is to prevent
     * autoloading until unstackErrors() is called.
     *
     * @deprecated since version 3.4, to be removed in 4.0.
     */
    public static function stackErrors()
    {
        @trigger_error('Support for stacking errors is deprecated since Symfony 3.4 and will be removed in 4.0.', E_USER_DEPRECATED);

        self::$stackedErrorLevels[] = error_reporting(error_reporting() | E_PARSE | E_ERROR | E_CORE_ERROR | E_COMPILE_ERROR);
    }

    /**
     * Unstacks stacked errors and forwards to the logger.
     *
     * @deprecated since version 3.4, to be removed in 4.0.
     */
    public static function unstackErrors()
    {
        @trigger_error('Support for unstacking errors is deprecated since Symfony 3.4 and will be removed in 4.0.', E_USER_DEPRECATED);

        $level = array_pop(self::$stackedErrorLevels);

        if (null !== $level) {
            $errorReportingLevel = error_reporting($level);
            if ($errorReportingLevel !== ($level | E_PARSE | E_ERROR | E_CORE_ERROR | E_COMPILE_ERROR)) {
                // If the user changed the error level, do not overwrite it
                error_reporting($errorReportingLevel);
            }
        }

        if (empty(self::$stackedErrorLevels)) {
            $errors = self::$stackedErrors;
            self::$stackedErrors = [];

            foreach ($errors as $error) {
                $error[0]->log($error[1], $error[2], $error[3]);
            }
        }
    }

    /**
     * Gets the fatal error handlers.
     *
     * Override this method if you want to define more fatal error handlers.
     *
     * @return FatalErrorHandlerInterface[] An array of FatalErrorHandlerInterface
     */
    protected function getFatalErrorHandlers()
    {
        return [
            new UndefinedFunctionFatalErrorHandler(),
            new UndefinedMethodFatalErrorHandler(),
            new ClassNotFoundFatalErrorHandler(),
        ];
    }

    private function cleanTrace($backtrace, $type, $file, $line, $throw)
    {
        $lightTrace = $backtrace;

        for ($i = 0; isset($backtrace[$i]); ++$i) {
            if (isset($backtrace[$i]['file'], $backtrace[$i]['line']) && $backtrace[$i]['line'] === $line && $backtrace[$i]['file'] === $file) {
                $lightTrace = \array_slice($lightTrace, 1 + $i);
                break;
            }
        }
        if (!($throw || $this->scopedErrors & $type)) {
            for ($i = 0; isset($lightTrace[$i]); ++$i) {
                unset($lightTrace[$i]['args'], $lightTrace[$i]['object']);
            }
        }

        return $lightTrace;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Debug\Exception;

/**
 * Fatal Throwable Error.
 *
 * @author Nicolas Grekas <p@tchwork.com>
 */
class FatalThrowableError extends FatalErrorException
{
    public function __construct(\Throwable $e)
    {
        if ($e instanceof \ParseError) {
            $message = 'Parse error: '.$e->getMessage();
            $severity = E_PARSE;
        } elseif ($e instanceof \TypeError) {
            $message = 'Type error: '.$e->getMessage();
            $severity = E_RECOVERABLE_ERROR;
        } else {
            $message = $e->getMessage();
            $severity = E_ERROR;
        }

        \ErrorException::__construct(
            $message,
            $e->getCode(),
            $severity,
            $e->getFile(),
            $e->getLine(),
            $e->getPrevious()
        );

        $this->setTrace($e->getTrace());
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Debug\Exception;

/**
 * Out of memory exception.
 *
 * @author Nicolas Grekas <p@tchwork.com>
 */
class OutOfMemoryException extends FatalErrorException
{
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Debug\Exception;

use Symfony\Component\HttpFoundation\Exception\RequestExceptionInterface;
use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface;

/**
 * FlattenException wraps a PHP Exception to be able to serialize it.
 *
 * Basically, this class removes all objects from the trace.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class FlattenException
{
    private $message;
    private $code;
    private $previous;
    private $trace;
    private $class;
    private $statusCode;
    private $headers;
    private $file;
    private $line;

    public static function create(\Exception $exception, $statusCode = null, array $headers = [])
    {
        $e = new static();
        $e->setMessage($exception->getMessage());
        $e->setCode($exception->getCode());

        if ($exception instanceof HttpExceptionInterface) {
            $statusCode = $exception->getStatusCode();
            $headers = array_merge($headers, $exception->getHeaders());
        } elseif ($exception instanceof RequestExceptionInterface) {
            $statusCode = 400;
        }

        if (null === $statusCode) {
            $statusCode = 500;
        }

        $e->setStatusCode($statusCode);
        $e->setHeaders($headers);
        $e->setTraceFromException($exception);
        $e->setClass(\get_class($exception));
        $e->setFile($exception->getFile());
        $e->setLine($exception->getLine());

        $previous = $exception->getPrevious();

        if ($previous instanceof \Exception) {
            $e->setPrevious(static::create($previous));
        } elseif ($previous instanceof \Throwable) {
            $e->setPrevious(static::create(new FatalThrowableError($previous)));
        }

        return $e;
    }

    public function toArray()
    {
        $exceptions = [];
        foreach (array_merge([$this], $this->getAllPrevious()) as $exception) {
            $exceptions[] = [
                'message' => $exception->getMessage(),
                'class' => $exception->getClass(),
                'trace' => $exception->getTrace(),
            ];
        }

        return $exceptions;
    }

    public function getStatusCode()
    {
        return $this->statusCode;
    }

    public function setStatusCode($code)
    {
        $this->statusCode = $code;
    }

    public function getHeaders()
    {
        return $this->headers;
    }

    public function setHeaders(array $headers)
    {
        $this->headers = $headers;
    }

    public function getClass()
    {
        return $this->class;
    }

    public function setClass($class)
    {
        $this->class = $class;
    }

    public function getFile()
    {
        return $this->file;
    }

    public function setFile($file)
    {
        $this->file = $file;
    }

    public function getLine()
    {
        return $this->line;
    }

    public function setLine($line)
    {
        $this->line = $line;
    }

    public function getMessage()
    {
        return $this->message;
    }

    public function setMessage($message)
    {
        $this->message = $message;
    }

    public function getCode()
    {
        return $this->code;
    }

    public function setCode($code)
    {
        $this->code = $code;
    }

    public function getPrevious()
    {
        return $this->previous;
    }

    public function setPrevious(self $previous)
    {
        $this->previous = $previous;
    }

    public function getAllPrevious()
    {
        $exceptions = [];
        $e = $this;
        while ($e = $e->getPrevious()) {
            $exceptions[] = $e;
        }

        return $exceptions;
    }

    public function getTrace()
    {
        return $this->trace;
    }

    public function setTraceFromException(\Exception $exception)
    {
        $this->setTrace($exception->getTrace(), $exception->getFile(), $exception->getLine());
    }

    public function setTrace($trace, $file, $line)
    {
        $this->trace = [];
        $this->trace[] = [
            'namespace' => '',
            'short_class' => '',
            'class' => '',
            'type' => '',
            'function' => '',
            'file' => $file,
            'line' => $line,
            'args' => [],
        ];
        foreach ($trace as $entry) {
            $class = '';
            $namespace = '';
            if (isset($entry['class'])) {
                $parts = explode('\\', $entry['class']);
                $class = array_pop($parts);
                $namespace = implode('\\', $parts);
            }

            $this->trace[] = [
                'namespace' => $namespace,
                'short_class' => $class,
                'class' => isset($entry['class']) ? $entry['class'] : '',
                'type' => isset($entry['type']) ? $entry['type'] : '',
                'function' => isset($entry['function']) ? $entry['function'] : null,
                'file' => isset($entry['file']) ? $entry['file'] : null,
                'line' => isset($entry['line']) ? $entry['line'] : null,
                'args' => isset($entry['args']) ? $this->flattenArgs($entry['args']) : [],
            ];
        }
    }

    private function flattenArgs($args, $level = 0, &$count = 0)
    {
        $result = [];
        foreach ($args as $key => $value) {
            if (++$count > 1e4) {
                return ['array', '*SKIPPED over 10000 entries*'];
            }
            if ($value instanceof \__PHP_Incomplete_Class) {
                // is_object() returns false on PHP<=7.1
                $result[$key] = ['incomplete-object', $this->getClassNameFromIncomplete($value)];
            } elseif (\is_object($value)) {
                $result[$key] = ['object', \get_class($value)];
            } elseif (\is_array($value)) {
                if ($level > 10) {
                    $result[$key] = ['array', '*DEEP NESTED ARRAY*'];
                } else {
                    $result[$key] = ['array', $this->flattenArgs($value, $level + 1, $count)];
                }
            } elseif (null === $value) {
                $result[$key] = ['null', null];
            } elseif (\is_bool($value)) {
                $result[$key] = ['boolean', $value];
            } elseif (\is_int($value)) {
                $result[$key] = ['integer', $value];
            } elseif (\is_float($value)) {
                $result[$key] = ['float', $value];
            } elseif (\is_resource($value)) {
                $result[$key] = ['resource', get_resource_type($value)];
            } else {
                $result[$key] = ['string', (string) $value];
            }
        }

        return $result;
    }

    private function getClassNameFromIncomplete(\__PHP_Incomplete_Class $value)
    {
        $array = new \ArrayObject($value);

        return $array['__PHP_Incomplete_Class_Name'];
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Debug\Exception;

/**
 * Undefined Method Exception.
 *
 * @author GrÃ©goire Pineau <lyrixx@lyrixx.info>
 */
class UndefinedMethodException extends FatalErrorException
{
    public function __construct($message, \ErrorException $previous)
    {
        parent::__construct(
            $message,
            $previous->getCode(),
            $previous->getSeverity(),
            $previous->getFile(),
            $previous->getLine(),
            null,
            true,
            null,
            $previous->getPrevious()
        );
        $this->setTrace($previous->getTrace());
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Debug\Exception;

/**
 * Undefined Function Exception.
 *
 * @author Konstanton Myakshin <koc-dp@yandex.ru>
 */
class UndefinedFunctionException extends FatalErrorException
{
    public function __construct($message, \ErrorException $previous)
    {
        parent::__construct(
            $message,
            $previous->getCode(),
            $previous->getSeverity(),
            $previous->getFile(),
            $previous->getLine(),
            null,
            true,
            null,
            $previous->getPrevious()
        );
        $this->setTrace($previous->getTrace());
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Debug\Exception;

/**
 * Fatal Error Exception.
 *
 * @author Konstanton Myakshin <koc-dp@yandex.ru>
 */
class FatalErrorException extends \ErrorException
{
    public function __construct($message, $code, $severity, $filename, $lineno, $traceOffset = null, $traceArgs = true, array $trace = null, $previous = null)
    {
        parent::__construct($message, $code, $severity, $filename, $lineno, $previous);

        if (null !== $trace) {
            if (!$traceArgs) {
                foreach ($trace as &$frame) {
                    unset($frame['args'], $frame['this'], $frame);
                }
            }

            $this->setTrace($trace);
        } elseif (null !== $traceOffset) {
            if (\function_exists('xdebug_get_function_stack')) {
                $trace = xdebug_get_function_stack();
                if (0 < $traceOffset) {
                    array_splice($trace, -$traceOffset);
                }

                foreach ($trace as &$frame) {
                    if (!isset($frame['type'])) {
                        // XDebug pre 2.1.1 doesn't currently set the call type key http://bugs.xdebug.org/view.php?id=695
                        if (isset($frame['class'])) {
                            $frame['type'] = '::';
                        }
                    } elseif ('dynamic' === $frame['type']) {
                        $frame['type'] = '->';
                    } elseif ('static' === $frame['type']) {
                        $frame['type'] = '::';
                    }

                    // XDebug also has a different name for the parameters array
                    if (!$traceArgs) {
                        unset($frame['params'], $frame['args']);
                    } elseif (isset($frame['params']) && !isset($frame['args'])) {
                        $frame['args'] = $frame['params'];
                        unset($frame['params']);
                    }
                }

                unset($frame);
                $trace = array_reverse($trace);
            } elseif (\function_exists('symfony_debug_backtrace')) {
                $trace = symfony_debug_backtrace();
                if (0 < $traceOffset) {
                    array_splice($trace, 0, $traceOffset);
                }
            } else {
                $trace = [];
            }

            $this->setTrace($trace);
        }
    }

    protected function setTrace($trace)
    {
        $traceReflector = new \ReflectionProperty('Exception', 'trace');
        $traceReflector->setAccessible(true);
        $traceReflector->setValue($this, $trace);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Debug\Exception;

/**
 * Data Object that represents a Silenced Error.
 *
 * @author GrÃ©goire Pineau <lyrixx@lyrixx.info>
 */
class SilencedErrorContext implements \JsonSerializable
{
    public $count = 1;

    private $severity;
    private $file;
    private $line;
    private $trace;

    public function __construct($severity, $file, $line, array $trace = [], $count = 1)
    {
        $this->severity = $severity;
        $this->file = $file;
        $this->line = $line;
        $this->trace = $trace;
        $this->count = $count;
    }

    public function getSeverity()
    {
        return $this->severity;
    }

    public function getFile()
    {
        return $this->file;
    }

    public function getLine()
    {
        return $this->line;
    }

    public function getTrace()
    {
        return $this->trace;
    }

    public function jsonSerialize()
    {
        return [
            'severity' => $this->severity,
            'file' => $this->file,
            'line' => $this->line,
            'trace' => $this->trace,
            'count' => $this->count,
        ];
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Debug\Exception;

/**
 * Class (or Trait or Interface) Not Found Exception.
 *
 * @author Konstanton Myakshin <koc-dp@yandex.ru>
 */
class ClassNotFoundException extends FatalErrorException
{
    public function __construct($message, \ErrorException $previous)
    {
        parent::__construct(
            $message,
            $previous->getCode(),
            $previous->getSeverity(),
            $previous->getFile(),
            $previous->getLine(),
            null,
            true,
            null,
            $previous->getPrevious()
        );
        $this->setTrace($previous->getTrace());
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Debug\Exception;

/**
 * Error Exception with Variable Context.
 *
 * @author Christian Sciberras <uuf6429@gmail.com>
 *
 * @deprecated since version 3.3. Instead, \ErrorException will be used directly in 4.0.
 */
class ContextErrorException extends \ErrorException
{
    private $context = [];

    public function __construct($message, $code, $severity, $filename, $lineno, $context = [])
    {
        parent::__construct($message, $code, $severity, $filename, $lineno);
        $this->context = $context;
    }

    /**
     * @return array Array of variables that existed when the exception occurred
     */
    public function getContext()
    {
        @trigger_error(sprintf('The %s class is deprecated since Symfony 3.3 and will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);

        return $this->context;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console;

/**
 * Contains all events dispatched by an Application.
 *
 * @author Francesco Levorato <git@flevour.net>
 */
final class ConsoleEvents
{
    /**
     * The COMMAND event allows you to attach listeners before any command is
     * executed by the console. It also allows you to modify the command, input and output
     * before they are handled to the command.
     *
     * @Event("Symfony\Component\Console\Event\ConsoleCommandEvent")
     */
    const COMMAND = 'console.command';

    /**
     * The TERMINATE event allows you to attach listeners after a command is
     * executed by the console.
     *
     * @Event("Symfony\Component\Console\Event\ConsoleTerminateEvent")
     */
    const TERMINATE = 'console.terminate';

    /**
     * The EXCEPTION event occurs when an uncaught exception appears
     * while executing Command#run().
     *
     * This event allows you to deal with the exception or
     * to modify the thrown exception.
     *
     * @Event("Symfony\Component\Console\Event\ConsoleExceptionEvent")
     *
     * @deprecated The console.exception event is deprecated since version 3.3 and will be removed in 4.0. Use the console.error event instead.
     */
    const EXCEPTION = 'console.exception';

    /**
     * The ERROR event occurs when an uncaught exception or error appears.
     *
     * This event allows you to deal with the exception/error or
     * to modify the thrown exception.
     *
     * @Event("Symfony\Component\Console\Event\ConsoleErrorEvent")
     */
    const ERROR = 'console.error';
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console;

use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Command\HelpCommand;
use Symfony\Component\Console\Command\ListCommand;
use Symfony\Component\Console\CommandLoader\CommandLoaderInterface;
use Symfony\Component\Console\Event\ConsoleCommandEvent;
use Symfony\Component\Console\Event\ConsoleErrorEvent;
use Symfony\Component\Console\Event\ConsoleExceptionEvent;
use Symfony\Component\Console\Event\ConsoleTerminateEvent;
use Symfony\Component\Console\Exception\CommandNotFoundException;
use Symfony\Component\Console\Exception\ExceptionInterface;
use Symfony\Component\Console\Exception\LogicException;
use Symfony\Component\Console\Formatter\OutputFormatter;
use Symfony\Component\Console\Helper\DebugFormatterHelper;
use Symfony\Component\Console\Helper\FormatterHelper;
use Symfony\Component\Console\Helper\Helper;
use Symfony\Component\Console\Helper\HelperSet;
use Symfony\Component\Console\Helper\ProcessHelper;
use Symfony\Component\Console\Helper\QuestionHelper;
use Symfony\Component\Console\Input\ArgvInput;
use Symfony\Component\Console\Input\ArrayInput;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputAwareInterface;
use Symfony\Component\Console\Input\InputDefinition;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Input\StreamableInputInterface;
use Symfony\Component\Console\Output\ConsoleOutput;
use Symfony\Component\Console\Output\ConsoleOutputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Debug\ErrorHandler;
use Symfony\Component\Debug\Exception\FatalThrowableError;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;

/**
 * An Application is the container for a collection of commands.
 *
 * It is the main entry point of a Console application.
 *
 * This class is optimized for a standard CLI environment.
 *
 * Usage:
 *
 *     $app = new Application('myapp', '1.0 (stable)');
 *     $app->add(new SimpleCommand());
 *     $app->run();
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class Application
{
    private $commands = [];
    private $wantHelps = false;
    private $runningCommand;
    private $name;
    private $version;
    private $commandLoader;
    private $catchExceptions = true;
    private $autoExit = true;
    private $definition;
    private $helperSet;
    private $dispatcher;
    private $terminal;
    private $defaultCommand;
    private $singleCommand = false;
    private $initialized;

    /**
     * @param string $name    The name of the application
     * @param string $version The version of the application
     */
    public function __construct($name = 'UNKNOWN', $version = 'UNKNOWN')
    {
        $this->name = $name;
        $this->version = $version;
        $this->terminal = new Terminal();
        $this->defaultCommand = 'list';
    }

    public function setDispatcher(EventDispatcherInterface $dispatcher)
    {
        $this->dispatcher = $dispatcher;
    }

    public function setCommandLoader(CommandLoaderInterface $commandLoader)
    {
        $this->commandLoader = $commandLoader;
    }

    /**
     * Runs the current application.
     *
     * @return int 0 if everything went fine, or an error code
     *
     * @throws \Exception When running fails. Bypass this when {@link setCatchExceptions()}.
     */
    public function run(InputInterface $input = null, OutputInterface $output = null)
    {
        putenv('LINES='.$this->terminal->getHeight());
        putenv('COLUMNS='.$this->terminal->getWidth());

        if (null === $input) {
            $input = new ArgvInput();
        }

        if (null === $output) {
            $output = new ConsoleOutput();
        }

        $renderException = function ($e) use ($output) {
            if (!$e instanceof \Exception) {
                $e = class_exists(FatalThrowableError::class) ? new FatalThrowableError($e) : new \ErrorException($e->getMessage(), $e->getCode(), E_ERROR, $e->getFile(), $e->getLine());
            }
            if ($output instanceof ConsoleOutputInterface) {
                $this->renderException($e, $output->getErrorOutput());
            } else {
                $this->renderException($e, $output);
            }
        };
        if ($phpHandler = set_exception_handler($renderException)) {
            restore_exception_handler();
            if (!\is_array($phpHandler) || !$phpHandler[0] instanceof ErrorHandler) {
                $debugHandler = true;
            } elseif ($debugHandler = $phpHandler[0]->setExceptionHandler($renderException)) {
                $phpHandler[0]->setExceptionHandler($debugHandler);
            }
        }

        if (null !== $this->dispatcher && $this->dispatcher->hasListeners(ConsoleEvents::EXCEPTION)) {
            @trigger_error(sprintf('The "ConsoleEvents::EXCEPTION" event is deprecated since Symfony 3.3 and will be removed in 4.0. Listen to the "ConsoleEvents::ERROR" event instead.'), E_USER_DEPRECATED);
        }

        $this->configureIO($input, $output);

        try {
            $exitCode = $this->doRun($input, $output);
        } catch (\Exception $e) {
            if (!$this->catchExceptions) {
                throw $e;
            }

            $renderException($e);

            $exitCode = $e->getCode();
            if (is_numeric($exitCode)) {
                $exitCode = (int) $exitCode;
                if (0 === $exitCode) {
                    $exitCode = 1;
                }
            } else {
                $exitCode = 1;
            }
        } finally {
            // if the exception handler changed, keep it
            // otherwise, unregister $renderException
            if (!$phpHandler) {
                if (set_exception_handler($renderException) === $renderException) {
                    restore_exception_handler();
                }
                restore_exception_handler();
            } elseif (!$debugHandler) {
                $finalHandler = $phpHandler[0]->setExceptionHandler(null);
                if ($finalHandler !== $renderException) {
                    $phpHandler[0]->setExceptionHandler($finalHandler);
                }
            }
        }

        if ($this->autoExit) {
            if ($exitCode > 255) {
                $exitCode = 255;
            }

            exit($exitCode);
        }

        return $exitCode;
    }

    /**
     * Runs the current application.
     *
     * @return int 0 if everything went fine, or an error code
     */
    public function doRun(InputInterface $input, OutputInterface $output)
    {
        if (true === $input->hasParameterOption(['--version', '-V'], true)) {
            $output->writeln($this->getLongVersion());

            return 0;
        }

        try {
            // Makes ArgvInput::getFirstArgument() able to distinguish an option from an argument.
            $input->bind($this->getDefinition());
        } catch (ExceptionInterface $e) {
            // Errors must be ignored, full binding/validation happens later when the command is known.
        }

        $name = $this->getCommandName($input);
        if (true === $input->hasParameterOption(['--help', '-h'], true)) {
            if (!$name) {
                $name = 'help';
                $input = new ArrayInput(['command_name' => $this->defaultCommand]);
            } else {
                $this->wantHelps = true;
            }
        }

        if (!$name) {
            $name = $this->defaultCommand;
            $definition = $this->getDefinition();
            $definition->setArguments(array_merge(
                $definition->getArguments(),
                [
                    'command' => new InputArgument('command', InputArgument::OPTIONAL, $definition->getArgument('command')->getDescription(), $name),
                ]
            ));
        }

        try {
            $e = $this->runningCommand = null;
            // the command name MUST be the first element of the input
            $command = $this->find($name);
        } catch (\Exception $e) {
        } catch (\Throwable $e) {
        }
        if (null !== $e) {
            if (null !== $this->dispatcher) {
                $event = new ConsoleErrorEvent($input, $output, $e);
                $this->dispatcher->dispatch(ConsoleEvents::ERROR, $event);
                $e = $event->getError();

                if (0 === $event->getExitCode()) {
                    return 0;
                }
            }

            throw $e;
        }

        $this->runningCommand = $command;
        $exitCode = $this->doRunCommand($command, $input, $output);
        $this->runningCommand = null;

        return $exitCode;
    }

    public function setHelperSet(HelperSet $helperSet)
    {
        $this->helperSet = $helperSet;
    }

    /**
     * Get the helper set associated with the command.
     *
     * @return HelperSet The HelperSet instance associated with this command
     */
    public function getHelperSet()
    {
        if (!$this->helperSet) {
            $this->helperSet = $this->getDefaultHelperSet();
        }

        return $this->helperSet;
    }

    public function setDefinition(InputDefinition $definition)
    {
        $this->definition = $definition;
    }

    /**
     * Gets the InputDefinition related to this Application.
     *
     * @return InputDefinition The InputDefinition instance
     */
    public function getDefinition()
    {
        if (!$this->definition) {
            $this->definition = $this->getDefaultInputDefinition();
        }

        if ($this->singleCommand) {
            $inputDefinition = $this->definition;
            $inputDefinition->setArguments();

            return $inputDefinition;
        }

        return $this->definition;
    }

    /**
     * Gets the help message.
     *
     * @return string A help message
     */
    public function getHelp()
    {
        return $this->getLongVersion();
    }

    /**
     * Gets whether to catch exceptions or not during commands execution.
     *
     * @return bool Whether to catch exceptions or not during commands execution
     */
    public function areExceptionsCaught()
    {
        return $this->catchExceptions;
    }

    /**
     * Sets whether to catch exceptions or not during commands execution.
     *
     * @param bool $boolean Whether to catch exceptions or not during commands execution
     */
    public function setCatchExceptions($boolean)
    {
        $this->catchExceptions = (bool) $boolean;
    }

    /**
     * Gets whether to automatically exit after a command execution or not.
     *
     * @return bool Whether to automatically exit after a command execution or not
     */
    public function isAutoExitEnabled()
    {
        return $this->autoExit;
    }

    /**
     * Sets whether to automatically exit after a command execution or not.
     *
     * @param bool $boolean Whether to automatically exit after a command execution or not
     */
    public function setAutoExit($boolean)
    {
        $this->autoExit = (bool) $boolean;
    }

    /**
     * Gets the name of the application.
     *
     * @return string The application name
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * Sets the application name.
     *
     * @param string $name The application name
     */
    public function setName($name)
    {
        $this->name = $name;
    }

    /**
     * Gets the application version.
     *
     * @return string The application version
     */
    public function getVersion()
    {
        return $this->version;
    }

    /**
     * Sets the application version.
     *
     * @param string $version The application version
     */
    public function setVersion($version)
    {
        $this->version = $version;
    }

    /**
     * Returns the long version of the application.
     *
     * @return string The long application version
     */
    public function getLongVersion()
    {
        if ('UNKNOWN' !== $this->getName()) {
            if ('UNKNOWN' !== $this->getVersion()) {
                return sprintf('%s <info>%s</info>', $this->getName(), $this->getVersion());
            }

            return $this->getName();
        }

        return 'Console Tool';
    }

    /**
     * Registers a new command.
     *
     * @param string $name The command name
     *
     * @return Command The newly created command
     */
    public function register($name)
    {
        return $this->add(new Command($name));
    }

    /**
     * Adds an array of command objects.
     *
     * If a Command is not enabled it will not be added.
     *
     * @param Command[] $commands An array of commands
     */
    public function addCommands(array $commands)
    {
        foreach ($commands as $command) {
            $this->add($command);
        }
    }

    /**
     * Adds a command object.
     *
     * If a command with the same name already exists, it will be overridden.
     * If the command is not enabled it will not be added.
     *
     * @return Command|null The registered command if enabled or null
     */
    public function add(Command $command)
    {
        $this->init();

        $command->setApplication($this);

        if (!$command->isEnabled()) {
            $command->setApplication(null);

            return null;
        }

        // Will throw if the command is not correctly initialized.
        $command->getDefinition();

        if (!$command->getName()) {
            throw new LogicException(sprintf('The command defined in "%s" cannot have an empty name.', \get_class($command)));
        }

        $this->commands[$command->getName()] = $command;

        foreach ($command->getAliases() as $alias) {
            $this->commands[$alias] = $command;
        }

        return $command;
    }

    /**
     * Returns a registered command by name or alias.
     *
     * @param string $name The command name or alias
     *
     * @return Command A Command object
     *
     * @throws CommandNotFoundException When given command name does not exist
     */
    public function get($name)
    {
        $this->init();

        if (!$this->has($name)) {
            throw new CommandNotFoundException(sprintf('The command "%s" does not exist.', $name));
        }

        $command = $this->commands[$name];

        if ($this->wantHelps) {
            $this->wantHelps = false;

            $helpCommand = $this->get('help');
            $helpCommand->setCommand($command);

            return $helpCommand;
        }

        return $command;
    }

    /**
     * Returns true if the command exists, false otherwise.
     *
     * @param string $name The command name or alias
     *
     * @return bool true if the command exists, false otherwise
     */
    public function has($name)
    {
        $this->init();

        return isset($this->commands[$name]) || ($this->commandLoader && $this->commandLoader->has($name) && $this->add($this->commandLoader->get($name)));
    }

    /**
     * Returns an array of all unique namespaces used by currently registered commands.
     *
     * It does not return the global namespace which always exists.
     *
     * @return string[] An array of namespaces
     */
    public function getNamespaces()
    {
        $namespaces = [];
        foreach ($this->all() as $command) {
            if ($command->isHidden()) {
                continue;
            }

            $namespaces = array_merge($namespaces, $this->extractAllNamespaces($command->getName()));

            foreach ($command->getAliases() as $alias) {
                $namespaces = array_merge($namespaces, $this->extractAllNamespaces($alias));
            }
        }

        return array_values(array_unique(array_filter($namespaces)));
    }

    /**
     * Finds a registered namespace by a name or an abbreviation.
     *
     * @param string $namespace A namespace or abbreviation to search for
     *
     * @return string A registered namespace
     *
     * @throws CommandNotFoundException When namespace is incorrect or ambiguous
     */
    public function findNamespace($namespace)
    {
        $allNamespaces = $this->getNamespaces();
        $expr = preg_replace_callback('{([^:]+|)}', function ($matches) { return preg_quote($matches[1]).'[^:]*'; }, $namespace);
        $namespaces = preg_grep('{^'.$expr.'}', $allNamespaces);

        if (empty($namespaces)) {
            $message = sprintf('There are no commands defined in the "%s" namespace.', $namespace);

            if ($alternatives = $this->findAlternatives($namespace, $allNamespaces)) {
                if (1 == \count($alternatives)) {
                    $message .= "\n\nDid you mean this?\n    ";
                } else {
                    $message .= "\n\nDid you mean one of these?\n    ";
                }

                $message .= implode("\n    ", $alternatives);
            }

            throw new CommandNotFoundException($message, $alternatives);
        }

        $exact = \in_array($namespace, $namespaces, true);
        if (\count($namespaces) > 1 && !$exact) {
            throw new CommandNotFoundException(sprintf("The namespace \"%s\" is ambiguous.\nDid you mean one of these?\n%s", $namespace, $this->getAbbreviationSuggestions(array_values($namespaces))), array_values($namespaces));
        }

        return $exact ? $namespace : reset($namespaces);
    }

    /**
     * Finds a command by name or alias.
     *
     * Contrary to get, this command tries to find the best
     * match if you give it an abbreviation of a name or alias.
     *
     * @param string $name A command name or a command alias
     *
     * @return Command A Command instance
     *
     * @throws CommandNotFoundException When command name is incorrect or ambiguous
     */
    public function find($name)
    {
        $this->init();

        $aliases = [];

        foreach ($this->commands as $command) {
            foreach ($command->getAliases() as $alias) {
                if (!$this->has($alias)) {
                    $this->commands[$alias] = $command;
                }
            }
        }

        $allCommands = $this->commandLoader ? array_merge($this->commandLoader->getNames(), array_keys($this->commands)) : array_keys($this->commands);
        $expr = preg_replace_callback('{([^:]+|)}', function ($matches) { return preg_quote($matches[1]).'[^:]*'; }, $name);
        $commands = preg_grep('{^'.$expr.'}', $allCommands);

        if (empty($commands)) {
            $commands = preg_grep('{^'.$expr.'}i', $allCommands);
        }

        // if no commands matched or we just matched namespaces
        if (empty($commands) || \count(preg_grep('{^'.$expr.'$}i', $commands)) < 1) {
            if (false !== $pos = strrpos($name, ':')) {
                // check if a namespace exists and contains commands
                $this->findNamespace(substr($name, 0, $pos));
            }

            $message = sprintf('Command "%s" is not defined.', $name);

            if ($alternatives = $this->findAlternatives($name, $allCommands)) {
                // remove hidden commands
                $alternatives = array_filter($alternatives, function ($name) {
                    return !$this->get($name)->isHidden();
                });

                if (1 == \count($alternatives)) {
                    $message .= "\n\nDid you mean this?\n    ";
                } else {
                    $message .= "\n\nDid you mean one of these?\n    ";
                }
                $message .= implode("\n    ", $alternatives);
            }

            throw new CommandNotFoundException($message, array_values($alternatives));
        }

        // filter out aliases for commands which are already on the list
        if (\count($commands) > 1) {
            $commandList = $this->commandLoader ? array_merge(array_flip($this->commandLoader->getNames()), $this->commands) : $this->commands;
            $commands = array_unique(array_filter($commands, function ($nameOrAlias) use ($commandList, $commands, &$aliases) {
                $commandName = $commandList[$nameOrAlias] instanceof Command ? $commandList[$nameOrAlias]->getName() : $nameOrAlias;
                $aliases[$nameOrAlias] = $commandName;

                return $commandName === $nameOrAlias || !\in_array($commandName, $commands);
            }));
        }

        $exact = \in_array($name, $commands, true) || isset($aliases[$name]);
        if (\count($commands) > 1 && !$exact) {
            $usableWidth = $this->terminal->getWidth() - 10;
            $abbrevs = array_values($commands);
            $maxLen = 0;
            foreach ($abbrevs as $abbrev) {
                $maxLen = max(Helper::strlen($abbrev), $maxLen);
            }
            $abbrevs = array_map(function ($cmd) use ($commandList, $usableWidth, $maxLen) {
                if (!$commandList[$cmd] instanceof Command) {
                    $commandList[$cmd] = $this->commandLoader->get($cmd);
                }

                if ($commandList[$cmd]->isHidden()) {
                    return false;
                }

                $abbrev = str_pad($cmd, $maxLen, ' ').' '.$commandList[$cmd]->getDescription();

                return Helper::strlen($abbrev) > $usableWidth ? Helper::substr($abbrev, 0, $usableWidth - 3).'...' : $abbrev;
            }, array_values($commands));
            $suggestions = $this->getAbbreviationSuggestions(array_filter($abbrevs));

            throw new CommandNotFoundException(sprintf("Command \"%s\" is ambiguous.\nDid you mean one of these?\n%s", $name, $suggestions), array_values($commands));
        }

        return $this->get($exact ? $name : reset($commands));
    }

    /**
     * Gets the commands (registered in the given namespace if provided).
     *
     * The array keys are the full names and the values the command instances.
     *
     * @param string $namespace A namespace name
     *
     * @return Command[] An array of Command instances
     */
    public function all($namespace = null)
    {
        $this->init();

        if (null === $namespace) {
            if (!$this->commandLoader) {
                return $this->commands;
            }

            $commands = $this->commands;
            foreach ($this->commandLoader->getNames() as $name) {
                if (!isset($commands[$name]) && $this->has($name)) {
                    $commands[$name] = $this->get($name);
                }
            }

            return $commands;
        }

        $commands = [];
        foreach ($this->commands as $name => $command) {
            if ($namespace === $this->extractNamespace($name, substr_count($namespace, ':') + 1)) {
                $commands[$name] = $command;
            }
        }

        if ($this->commandLoader) {
            foreach ($this->commandLoader->getNames() as $name) {
                if (!isset($commands[$name]) && $namespace === $this->extractNamespace($name, substr_count($namespace, ':') + 1) && $this->has($name)) {
                    $commands[$name] = $this->get($name);
                }
            }
        }

        return $commands;
    }

    /**
     * Returns an array of possible abbreviations given a set of names.
     *
     * @param array $names An array of names
     *
     * @return array An array of abbreviations
     */
    public static function getAbbreviations($names)
    {
        $abbrevs = [];
        foreach ($names as $name) {
            for ($len = \strlen($name); $len > 0; --$len) {
                $abbrev = substr($name, 0, $len);
                $abbrevs[$abbrev][] = $name;
            }
        }

        return $abbrevs;
    }

    /**
     * Renders a caught exception.
     */
    public function renderException(\Exception $e, OutputInterface $output)
    {
        $output->writeln('', OutputInterface::VERBOSITY_QUIET);

        $this->doRenderException($e, $output);

        if (null !== $this->runningCommand) {
            $output->writeln(sprintf('<info>%s</info>', sprintf($this->runningCommand->getSynopsis(), $this->getName())), OutputInterface::VERBOSITY_QUIET);
            $output->writeln('', OutputInterface::VERBOSITY_QUIET);
        }
    }

    protected function doRenderException(\Exception $e, OutputInterface $output)
    {
        do {
            $message = trim($e->getMessage());
            if ('' === $message || OutputInterface::VERBOSITY_VERBOSE <= $output->getVerbosity()) {
                $title = sprintf('  [%s%s]  ', \get_class($e), 0 !== ($code = $e->getCode()) ? ' ('.$code.')' : '');
                $len = Helper::strlen($title);
            } else {
                $len = 0;
            }

            $width = $this->terminal->getWidth() ? $this->terminal->getWidth() - 1 : PHP_INT_MAX;
            // HHVM only accepts 32 bits integer in str_split, even when PHP_INT_MAX is a 64 bit integer: https://github.com/facebook/hhvm/issues/1327
            if (\defined('HHVM_VERSION') && $width > 1 << 31) {
                $width = 1 << 31;
            }
            $lines = [];
            foreach ('' !== $message ? preg_split('/\r?\n/', $message) : [] as $line) {
                foreach ($this->splitStringByWidth($line, $width - 4) as $line) {
                    // pre-format lines to get the right string length
                    $lineLength = Helper::strlen($line) + 4;
                    $lines[] = [$line, $lineLength];

                    $len = max($lineLength, $len);
                }
            }

            $messages = [];
            if (!$e instanceof ExceptionInterface || OutputInterface::VERBOSITY_VERBOSE <= $output->getVerbosity()) {
                $messages[] = sprintf('<comment>%s</comment>', OutputFormatter::escape(sprintf('In %s line %s:', basename($e->getFile()) ?: 'n/a', $e->getLine() ?: 'n/a')));
            }
            $messages[] = $emptyLine = sprintf('<error>%s</error>', str_repeat(' ', $len));
            if ('' === $message || OutputInterface::VERBOSITY_VERBOSE <= $output->getVerbosity()) {
                $messages[] = sprintf('<error>%s%s</error>', $title, str_repeat(' ', max(0, $len - Helper::strlen($title))));
            }
            foreach ($lines as $line) {
                $messages[] = sprintf('<error>  %s  %s</error>', OutputFormatter::escape($line[0]), str_repeat(' ', $len - $line[1]));
            }
            $messages[] = $emptyLine;
            $messages[] = '';

            $output->writeln($messages, OutputInterface::VERBOSITY_QUIET);

            if (OutputInterface::VERBOSITY_VERBOSE <= $output->getVerbosity()) {
                $output->writeln('<comment>Exception trace:</comment>', OutputInterface::VERBOSITY_QUIET);

                // exception related properties
                $trace = $e->getTrace();

                array_unshift($trace, [
                    'function' => '',
                    'file' => $e->getFile() ?: 'n/a',
                    'line' => $e->getLine() ?: 'n/a',
                    'args' => [],
                ]);

                for ($i = 0, $count = \count($trace); $i < $count; ++$i) {
                    $class = isset($trace[$i]['class']) ? $trace[$i]['class'] : '';
                    $type = isset($trace[$i]['type']) ? $trace[$i]['type'] : '';
                    $function = isset($trace[$i]['function']) ? $trace[$i]['function'] : '';
                    $file = isset($trace[$i]['file']) ? $trace[$i]['file'] : 'n/a';
                    $line = isset($trace[$i]['line']) ? $trace[$i]['line'] : 'n/a';

                    $output->writeln(sprintf(' %s%s at <info>%s:%s</info>', $class, $function ? $type.$function.'()' : '', $file, $line), OutputInterface::VERBOSITY_QUIET);
                }

                $output->writeln('', OutputInterface::VERBOSITY_QUIET);
            }
        } while ($e = $e->getPrevious());
    }

    /**
     * Tries to figure out the terminal width in which this application runs.
     *
     * @return int|null
     *
     * @deprecated since version 3.2, to be removed in 4.0. Create a Terminal instance instead.
     */
    protected function getTerminalWidth()
    {
        @trigger_error(sprintf('The "%s()" method is deprecated as of 3.2 and will be removed in 4.0. Create a Terminal instance instead.', __METHOD__), E_USER_DEPRECATED);

        return $this->terminal->getWidth();
    }

    /**
     * Tries to figure out the terminal height in which this application runs.
     *
     * @return int|null
     *
     * @deprecated since version 3.2, to be removed in 4.0. Create a Terminal instance instead.
     */
    protected function getTerminalHeight()
    {
        @trigger_error(sprintf('The "%s()" method is deprecated as of 3.2 and will be removed in 4.0. Create a Terminal instance instead.', __METHOD__), E_USER_DEPRECATED);

        return $this->terminal->getHeight();
    }

    /**
     * Tries to figure out the terminal dimensions based on the current environment.
     *
     * @return array Array containing width and height
     *
     * @deprecated since version 3.2, to be removed in 4.0. Create a Terminal instance instead.
     */
    public function getTerminalDimensions()
    {
        @trigger_error(sprintf('The "%s()" method is deprecated as of 3.2 and will be removed in 4.0. Create a Terminal instance instead.', __METHOD__), E_USER_DEPRECATED);

        return [$this->terminal->getWidth(), $this->terminal->getHeight()];
    }

    /**
     * Sets terminal dimensions.
     *
     * Can be useful to force terminal dimensions for functional tests.
     *
     * @param int $width  The width
     * @param int $height The height
     *
     * @return $this
     *
     * @deprecated since version 3.2, to be removed in 4.0. Set the COLUMNS and LINES env vars instead.
     */
    public function setTerminalDimensions($width, $height)
    {
        @trigger_error(sprintf('The "%s()" method is deprecated as of 3.2 and will be removed in 4.0. Set the COLUMNS and LINES env vars instead.', __METHOD__), E_USER_DEPRECATED);

        putenv('COLUMNS='.$width);
        putenv('LINES='.$height);

        return $this;
    }

    /**
     * Configures the input and output instances based on the user arguments and options.
     */
    protected function configureIO(InputInterface $input, OutputInterface $output)
    {
        if (true === $input->hasParameterOption(['--ansi'], true)) {
            $output->setDecorated(true);
        } elseif (true === $input->hasParameterOption(['--no-ansi'], true)) {
            $output->setDecorated(false);
        }

        if (true === $input->hasParameterOption(['--no-interaction', '-n'], true)) {
            $input->setInteractive(false);
        } elseif (\function_exists('posix_isatty')) {
            $inputStream = null;

            if ($input instanceof StreamableInputInterface) {
                $inputStream = $input->getStream();
            }

            // This check ensures that calling QuestionHelper::setInputStream() works
            // To be removed in 4.0 (in the same time as QuestionHelper::setInputStream)
            if (!$inputStream && $this->getHelperSet()->has('question')) {
                $inputStream = $this->getHelperSet()->get('question')->getInputStream(false);
            }

            if (!@posix_isatty($inputStream) && false === getenv('SHELL_INTERACTIVE')) {
                $input->setInteractive(false);
            }
        }

        switch ($shellVerbosity = (int) getenv('SHELL_VERBOSITY')) {
            case -1: $output->setVerbosity(OutputInterface::VERBOSITY_QUIET); break;
            case 1: $output->setVerbosity(OutputInterface::VERBOSITY_VERBOSE); break;
            case 2: $output->setVerbosity(OutputInterface::VERBOSITY_VERY_VERBOSE); break;
            case 3: $output->setVerbosity(OutputInterface::VERBOSITY_DEBUG); break;
            default: $shellVerbosity = 0; break;
        }

        if (true === $input->hasParameterOption(['--quiet', '-q'], true)) {
            $output->setVerbosity(OutputInterface::VERBOSITY_QUIET);
            $shellVerbosity = -1;
        } else {
            if ($input->hasParameterOption('-vvv', true) || $input->hasParameterOption('--verbose=3', true) || 3 === $input->getParameterOption('--verbose', false, true)) {
                $output->setVerbosity(OutputInterface::VERBOSITY_DEBUG);
                $shellVerbosity = 3;
            } elseif ($input->hasParameterOption('-vv', true) || $input->hasParameterOption('--verbose=2', true) || 2 === $input->getParameterOption('--verbose', false, true)) {
                $output->setVerbosity(OutputInterface::VERBOSITY_VERY_VERBOSE);
                $shellVerbosity = 2;
            } elseif ($input->hasParameterOption('-v', true) || $input->hasParameterOption('--verbose=1', true) || $input->hasParameterOption('--verbose', true) || $input->getParameterOption('--verbose', false, true)) {
                $output->setVerbosity(OutputInterface::VERBOSITY_VERBOSE);
                $shellVerbosity = 1;
            }
        }

        if (-1 === $shellVerbosity) {
            $input->setInteractive(false);
        }

        putenv('SHELL_VERBOSITY='.$shellVerbosity);
        $_ENV['SHELL_VERBOSITY'] = $shellVerbosity;
        $_SERVER['SHELL_VERBOSITY'] = $shellVerbosity;
    }

    /**
     * Runs the current command.
     *
     * If an event dispatcher has been attached to the application,
     * events are also dispatched during the life-cycle of the command.
     *
     * @return int 0 if everything went fine, or an error code
     */
    protected function doRunCommand(Command $command, InputInterface $input, OutputInterface $output)
    {
        foreach ($command->getHelperSet() as $helper) {
            if ($helper instanceof InputAwareInterface) {
                $helper->setInput($input);
            }
        }

        if (null === $this->dispatcher) {
            return $command->run($input, $output);
        }

        // bind before the console.command event, so the listeners have access to input options/arguments
        try {
            $command->mergeApplicationDefinition();
            $input->bind($command->getDefinition());
        } catch (ExceptionInterface $e) {
            // ignore invalid options/arguments for now, to allow the event listeners to customize the InputDefinition
        }

        $event = new ConsoleCommandEvent($command, $input, $output);
        $e = null;

        try {
            $this->dispatcher->dispatch(ConsoleEvents::COMMAND, $event);

            if ($event->commandShouldRun()) {
                $exitCode = $command->run($input, $output);
            } else {
                $exitCode = ConsoleCommandEvent::RETURN_CODE_DISABLED;
            }
        } catch (\Exception $e) {
        } catch (\Throwable $e) {
        }
        if (null !== $e) {
            if ($this->dispatcher->hasListeners(ConsoleEvents::EXCEPTION)) {
                $x = $e instanceof \Exception ? $e : new FatalThrowableError($e);
                $event = new ConsoleExceptionEvent($command, $input, $output, $x, $x->getCode());
                $this->dispatcher->dispatch(ConsoleEvents::EXCEPTION, $event);

                if ($x !== $event->getException()) {
                    $e = $event->getException();
                }
            }
            $event = new ConsoleErrorEvent($input, $output, $e, $command);
            $this->dispatcher->dispatch(ConsoleEvents::ERROR, $event);
            $e = $event->getError();

            if (0 === $exitCode = $event->getExitCode()) {
                $e = null;
            }
        }

        $event = new ConsoleTerminateEvent($command, $input, $output, $exitCode);
        $this->dispatcher->dispatch(ConsoleEvents::TERMINATE, $event);

        if (null !== $e) {
            throw $e;
        }

        return $event->getExitCode();
    }

    /**
     * Gets the name of the command based on input.
     *
     * @return string|null
     */
    protected function getCommandName(InputInterface $input)
    {
        return $this->singleCommand ? $this->defaultCommand : $input->getFirstArgument();
    }

    /**
     * Gets the default input definition.
     *
     * @return InputDefinition An InputDefinition instance
     */
    protected function getDefaultInputDefinition()
    {
        return new InputDefinition([
            new InputArgument('command', InputArgument::REQUIRED, 'The command to execute'),

            new InputOption('--help', '-h', InputOption::VALUE_NONE, 'Display this help message'),
            new InputOption('--quiet', '-q', InputOption::VALUE_NONE, 'Do not output any message'),
            new InputOption('--verbose', '-v|vv|vvv', InputOption::VALUE_NONE, 'Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug'),
            new InputOption('--version', '-V', InputOption::VALUE_NONE, 'Display this application version'),
            new InputOption('--ansi', '', InputOption::VALUE_NONE, 'Force ANSI output'),
            new InputOption('--no-ansi', '', InputOption::VALUE_NONE, 'Disable ANSI output'),
            new InputOption('--no-interaction', '-n', InputOption::VALUE_NONE, 'Do not ask any interactive question'),
        ]);
    }

    /**
     * Gets the default commands that should always be available.
     *
     * @return Command[] An array of default Command instances
     */
    protected function getDefaultCommands()
    {
        return [new HelpCommand(), new ListCommand()];
    }

    /**
     * Gets the default helper set with the helpers that should always be available.
     *
     * @return HelperSet A HelperSet instance
     */
    protected function getDefaultHelperSet()
    {
        return new HelperSet([
            new FormatterHelper(),
            new DebugFormatterHelper(),
            new ProcessHelper(),
            new QuestionHelper(),
        ]);
    }

    /**
     * Returns abbreviated suggestions in string format.
     *
     * @param array $abbrevs Abbreviated suggestions to convert
     *
     * @return string A formatted string of abbreviated suggestions
     */
    private function getAbbreviationSuggestions($abbrevs)
    {
        return '    '.implode("\n    ", $abbrevs);
    }

    /**
     * Returns the namespace part of the command name.
     *
     * This method is not part of public API and should not be used directly.
     *
     * @param string $name  The full name of the command
     * @param string $limit The maximum number of parts of the namespace
     *
     * @return string The namespace of the command
     */
    public function extractNamespace($name, $limit = null)
    {
        $parts = explode(':', $name, -1);

        return implode(':', null === $limit ? $parts : \array_slice($parts, 0, $limit));
    }

    /**
     * Finds alternative of $name among $collection,
     * if nothing is found in $collection, try in $abbrevs.
     *
     * @param string   $name       The string
     * @param iterable $collection The collection
     *
     * @return string[] A sorted array of similar string
     */
    private function findAlternatives($name, $collection)
    {
        $threshold = 1e3;
        $alternatives = [];

        $collectionParts = [];
        foreach ($collection as $item) {
            $collectionParts[$item] = explode(':', $item);
        }

        foreach (explode(':', $name) as $i => $subname) {
            foreach ($collectionParts as $collectionName => $parts) {
                $exists = isset($alternatives[$collectionName]);
                if (!isset($parts[$i]) && $exists) {
                    $alternatives[$collectionName] += $threshold;
                    continue;
                } elseif (!isset($parts[$i])) {
                    continue;
                }

                $lev = levenshtein($subname, $parts[$i]);
                if ($lev <= \strlen($subname) / 3 || '' !== $subname && false !== strpos($parts[$i], $subname)) {
                    $alternatives[$collectionName] = $exists ? $alternatives[$collectionName] + $lev : $lev;
                } elseif ($exists) {
                    $alternatives[$collectionName] += $threshold;
                }
            }
        }

        foreach ($collection as $item) {
            $lev = levenshtein($name, $item);
            if ($lev <= \strlen($name) / 3 || false !== strpos($item, $name)) {
                $alternatives[$item] = isset($alternatives[$item]) ? $alternatives[$item] - $lev : $lev;
            }
        }

        $alternatives = array_filter($alternatives, function ($lev) use ($threshold) { return $lev < 2 * $threshold; });
        ksort($alternatives, SORT_NATURAL | SORT_FLAG_CASE);

        return array_keys($alternatives);
    }

    /**
     * Sets the default Command name.
     *
     * @param string $commandName     The Command name
     * @param bool   $isSingleCommand Set to true if there is only one command in this application
     *
     * @return self
     */
    public function setDefaultCommand($commandName, $isSingleCommand = false)
    {
        $this->defaultCommand = $commandName;

        if ($isSingleCommand) {
            // Ensure the command exist
            $this->find($commandName);

            $this->singleCommand = true;
        }

        return $this;
    }

    /**
     * @internal
     */
    public function isSingleCommand()
    {
        return $this->singleCommand;
    }

    private function splitStringByWidth($string, $width)
    {
        // str_split is not suitable for multi-byte characters, we should use preg_split to get char array properly.
        // additionally, array_slice() is not enough as some character has doubled width.
        // we need a function to split string not by character count but by string width
        if (false === $encoding = mb_detect_encoding($string, null, true)) {
            return str_split($string, $width);
        }

        $utf8String = mb_convert_encoding($string, 'utf8', $encoding);
        $lines = [];
        $line = '';
        foreach (preg_split('//u', $utf8String) as $char) {
            // test if $char could be appended to current line
            if (mb_strwidth($line.$char, 'utf8') <= $width) {
                $line .= $char;
                continue;
            }
            // if not, push current line to array and make new line
            $lines[] = str_pad($line, $width);
            $line = $char;
        }

        $lines[] = \count($lines) ? str_pad($line, $width) : $line;

        mb_convert_variables($encoding, 'utf8', $lines);

        return $lines;
    }

    /**
     * Returns all namespaces of the command name.
     *
     * @param string $name The full name of the command
     *
     * @return string[] The namespaces of the command
     */
    private function extractAllNamespaces($name)
    {
        // -1 as third argument is needed to skip the command short name when exploding
        $parts = explode(':', $name, -1);
        $namespaces = [];

        foreach ($parts as $part) {
            if (\count($namespaces)) {
                $namespaces[] = end($namespaces).':'.$part;
            } else {
                $namespaces[] = $part;
            }
        }

        return $namespaces;
    }

    private function init()
    {
        if ($this->initialized) {
            return;
        }
        $this->initialized = true;

        foreach ($this->getDefaultCommands() as $command) {
            $this->add($command);
        }
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Logger;

use Psr\Log\AbstractLogger;
use Psr\Log\InvalidArgumentException;
use Psr\Log\LogLevel;
use Symfony\Component\Console\Output\ConsoleOutputInterface;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * PSR-3 compliant console logger.
 *
 * @author KÃ©vin Dunglas <dunglas@gmail.com>
 *
 * @see https://www.php-fig.org/psr/psr-3/
 */
class ConsoleLogger extends AbstractLogger
{
    const INFO = 'info';
    const ERROR = 'error';

    private $output;
    private $verbosityLevelMap = [
        LogLevel::EMERGENCY => OutputInterface::VERBOSITY_NORMAL,
        LogLevel::ALERT => OutputInterface::VERBOSITY_NORMAL,
        LogLevel::CRITICAL => OutputInterface::VERBOSITY_NORMAL,
        LogLevel::ERROR => OutputInterface::VERBOSITY_NORMAL,
        LogLevel::WARNING => OutputInterface::VERBOSITY_NORMAL,
        LogLevel::NOTICE => OutputInterface::VERBOSITY_VERBOSE,
        LogLevel::INFO => OutputInterface::VERBOSITY_VERY_VERBOSE,
        LogLevel::DEBUG => OutputInterface::VERBOSITY_DEBUG,
    ];
    private $formatLevelMap = [
        LogLevel::EMERGENCY => self::ERROR,
        LogLevel::ALERT => self::ERROR,
        LogLevel::CRITICAL => self::ERROR,
        LogLevel::ERROR => self::ERROR,
        LogLevel::WARNING => self::INFO,
        LogLevel::NOTICE => self::INFO,
        LogLevel::INFO => self::INFO,
        LogLevel::DEBUG => self::INFO,
    ];
    private $errored = false;

    public function __construct(OutputInterface $output, array $verbosityLevelMap = [], array $formatLevelMap = [])
    {
        $this->output = $output;
        $this->verbosityLevelMap = $verbosityLevelMap + $this->verbosityLevelMap;
        $this->formatLevelMap = $formatLevelMap + $this->formatLevelMap;
    }

    /**
     * {@inheritdoc}
     */
    public function log($level, $message, array $context = [])
    {
        if (!isset($this->verbosityLevelMap[$level])) {
            throw new InvalidArgumentException(sprintf('The log level "%s" does not exist.', $level));
        }

        $output = $this->output;

        // Write to the error output if necessary and available
        if (self::ERROR === $this->formatLevelMap[$level]) {
            if ($this->output instanceof ConsoleOutputInterface) {
                $output = $output->getErrorOutput();
            }
            $this->errored = true;
        }

        // the if condition check isn't necessary -- it's the same one that $output will do internally anyway.
        // We only do it for efficiency here as the message formatting is relatively expensive.
        if ($output->getVerbosity() >= $this->verbosityLevelMap[$level]) {
            $output->writeln(sprintf('<%1$s>[%2$s] %3$s</%1$s>', $this->formatLevelMap[$level], $level, $this->interpolate($message, $context)), $this->verbosityLevelMap[$level]);
        }
    }

    /**
     * Returns true when any messages have been logged at error levels.
     *
     * @return bool
     */
    public function hasErrored()
    {
        return $this->errored;
    }

    /**
     * Interpolates context values into the message placeholders.
     *
     * @author PHP Framework Interoperability Group
     *
     * @param string $message
     *
     * @return string
     */
    private function interpolate($message, array $context)
    {
        if (false === strpos($message, '{')) {
            return $message;
        }

        $replacements = [];
        foreach ($context as $key => $val) {
            if (null === $val || is_scalar($val) || (\is_object($val) && method_exists($val, '__toString'))) {
                $replacements["{{$key}}"] = $val;
            } elseif ($val instanceof \DateTimeInterface) {
                $replacements["{{$key}}"] = $val->format(\DateTime::RFC3339);
            } elseif (\is_object($val)) {
                $replacements["{{$key}}"] = '[object '.\get_class($val).']';
            } else {
                $replacements["{{$key}}"] = '['.\gettype($val).']';
            }
        }

        return strtr($message, $replacements);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Input;

/**
 * StreamableInputInterface is the interface implemented by all input classes
 * that have an input stream.
 *
 * @author Robin Chalas <robin.chalas@gmail.com>
 */
interface StreamableInputInterface extends InputInterface
{
    /**
     * Sets the input stream to read from when interacting with the user.
     *
     * This is mainly useful for testing purpose.
     *
     * @param resource $stream The input stream
     */
    public function setStream($stream);

    /**
     * Returns the input stream.
     *
     * @return resource|null
     */
    public function getStream();
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Input;

use Symfony\Component\Console\Exception\InvalidArgumentException;
use Symfony\Component\Console\Exception\InvalidOptionException;

/**
 * ArrayInput represents an input provided as an array.
 *
 * Usage:
 *
 *     $input = new ArrayInput(['command' => 'foo:bar', 'foo' => 'bar', '--bar' => 'foobar']);
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ArrayInput extends Input
{
    private $parameters;

    public function __construct(array $parameters, InputDefinition $definition = null)
    {
        $this->parameters = $parameters;

        parent::__construct($definition);
    }

    /**
     * {@inheritdoc}
     */
    public function getFirstArgument()
    {
        foreach ($this->parameters as $key => $value) {
            if ($key && '-' === $key[0]) {
                continue;
            }

            return $value;
        }

        return null;
    }

    /**
     * {@inheritdoc}
     */
    public function hasParameterOption($values, $onlyParams = false)
    {
        $values = (array) $values;

        foreach ($this->parameters as $k => $v) {
            if (!\is_int($k)) {
                $v = $k;
            }

            if ($onlyParams && '--' === $v) {
                return false;
            }

            if (\in_array($v, $values)) {
                return true;
            }
        }

        return false;
    }

    /**
     * {@inheritdoc}
     */
    public function getParameterOption($values, $default = false, $onlyParams = false)
    {
        $values = (array) $values;

        foreach ($this->parameters as $k => $v) {
            if ($onlyParams && ('--' === $k || (\is_int($k) && '--' === $v))) {
                return $default;
            }

            if (\is_int($k)) {
                if (\in_array($v, $values)) {
                    return true;
                }
            } elseif (\in_array($k, $values)) {
                return $v;
            }
        }

        return $default;
    }

    /**
     * Returns a stringified representation of the args passed to the command.
     *
     * @return string
     */
    public function __toString()
    {
        $params = [];
        foreach ($this->parameters as $param => $val) {
            if ($param && '-' === $param[0]) {
                if (\is_array($val)) {
                    foreach ($val as $v) {
                        $params[] = $param.('' != $v ? '='.$this->escapeToken($v) : '');
                    }
                } else {
                    $params[] = $param.('' != $val ? '='.$this->escapeToken($val) : '');
                }
            } else {
                $params[] = \is_array($val) ? implode(' ', array_map([$this, 'escapeToken'], $val)) : $this->escapeToken($val);
            }
        }

        return implode(' ', $params);
    }

    /**
     * {@inheritdoc}
     */
    protected function parse()
    {
        foreach ($this->parameters as $key => $value) {
            if ('--' === $key) {
                return;
            }
            if (0 === strpos($key, '--')) {
                $this->addLongOption(substr($key, 2), $value);
            } elseif (0 === strpos($key, '-')) {
                $this->addShortOption(substr($key, 1), $value);
            } else {
                $this->addArgument($key, $value);
            }
        }
    }

    /**
     * Adds a short option value.
     *
     * @param string $shortcut The short option key
     * @param mixed  $value    The value for the option
     *
     * @throws InvalidOptionException When option given doesn't exist
     */
    private function addShortOption($shortcut, $value)
    {
        if (!$this->definition->hasShortcut($shortcut)) {
            throw new InvalidOptionException(sprintf('The "-%s" option does not exist.', $shortcut));
        }

        $this->addLongOption($this->definition->getOptionForShortcut($shortcut)->getName(), $value);
    }

    /**
     * Adds a long option value.
     *
     * @param string $name  The long option key
     * @param mixed  $value The value for the option
     *
     * @throws InvalidOptionException When option given doesn't exist
     * @throws InvalidOptionException When a required value is missing
     */
    private function addLongOption($name, $value)
    {
        if (!$this->definition->hasOption($name)) {
            throw new InvalidOptionException(sprintf('The "--%s" option does not exist.', $name));
        }

        $option = $this->definition->getOption($name);

        if (null === $value) {
            if ($option->isValueRequired()) {
                throw new InvalidOptionException(sprintf('The "--%s" option requires a value.', $name));
            }

            if (!$option->isValueOptional()) {
                $value = true;
            }
        }

        $this->options[$name] = $value;
    }

    /**
     * Adds an argument value.
     *
     * @param string $name  The argument name
     * @param mixed  $value The value for the argument
     *
     * @throws InvalidArgumentException When argument given doesn't exist
     */
    private function addArgument($name, $value)
    {
        if (!$this->definition->hasArgument($name)) {
            throw new InvalidArgumentException(sprintf('The "%s" argument does not exist.', $name));
        }

        $this->arguments[$name] = $value;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Input;

use Symfony\Component\Console\Exception\RuntimeException;

/**
 * ArgvInput represents an input coming from the CLI arguments.
 *
 * Usage:
 *
 *     $input = new ArgvInput();
 *
 * By default, the `$_SERVER['argv']` array is used for the input values.
 *
 * This can be overridden by explicitly passing the input values in the constructor:
 *
 *     $input = new ArgvInput($_SERVER['argv']);
 *
 * If you pass it yourself, don't forget that the first element of the array
 * is the name of the running application.
 *
 * When passing an argument to the constructor, be sure that it respects
 * the same rules as the argv one. It's almost always better to use the
 * `StringInput` when you want to provide your own input.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @see http://www.gnu.org/software/libc/manual/html_node/Argument-Syntax.html
 * @see http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap12.html#tag_12_02
 */
class ArgvInput extends Input
{
    private $tokens;
    private $parsed;

    /**
     * @param array|null           $argv       An array of parameters from the CLI (in the argv format)
     * @param InputDefinition|null $definition A InputDefinition instance
     */
    public function __construct(array $argv = null, InputDefinition $definition = null)
    {
        if (null === $argv) {
            $argv = $_SERVER['argv'];
        }

        // strip the application name
        array_shift($argv);

        $this->tokens = $argv;

        parent::__construct($definition);
    }

    protected function setTokens(array $tokens)
    {
        $this->tokens = $tokens;
    }

    /**
     * {@inheritdoc}
     */
    protected function parse()
    {
        $parseOptions = true;
        $this->parsed = $this->tokens;
        while (null !== $token = array_shift($this->parsed)) {
            if ($parseOptions && '' == $token) {
                $this->parseArgument($token);
            } elseif ($parseOptions && '--' == $token) {
                $parseOptions = false;
            } elseif ($parseOptions && 0 === strpos($token, '--')) {
                $this->parseLongOption($token);
            } elseif ($parseOptions && '-' === $token[0] && '-' !== $token) {
                $this->parseShortOption($token);
            } else {
                $this->parseArgument($token);
            }
        }
    }

    /**
     * Parses a short option.
     *
     * @param string $token The current token
     */
    private function parseShortOption($token)
    {
        $name = substr($token, 1);

        if (\strlen($name) > 1) {
            if ($this->definition->hasShortcut($name[0]) && $this->definition->getOptionForShortcut($name[0])->acceptValue()) {
                // an option with a value (with no space)
                $this->addShortOption($name[0], substr($name, 1));
            } else {
                $this->parseShortOptionSet($name);
            }
        } else {
            $this->addShortOption($name, null);
        }
    }

    /**
     * Parses a short option set.
     *
     * @param string $name The current token
     *
     * @throws RuntimeException When option given doesn't exist
     */
    private function parseShortOptionSet($name)
    {
        $len = \strlen($name);
        for ($i = 0; $i < $len; ++$i) {
            if (!$this->definition->hasShortcut($name[$i])) {
                $encoding = mb_detect_encoding($name, null, true);
                throw new RuntimeException(sprintf('The "-%s" option does not exist.', false === $encoding ? $name[$i] : mb_substr($name, $i, 1, $encoding)));
            }

            $option = $this->definition->getOptionForShortcut($name[$i]);
            if ($option->acceptValue()) {
                $this->addLongOption($option->getName(), $i === $len - 1 ? null : substr($name, $i + 1));

                break;
            } else {
                $this->addLongOption($option->getName(), null);
            }
        }
    }

    /**
     * Parses a long option.
     *
     * @param string $token The current token
     */
    private function parseLongOption($token)
    {
        $name = substr($token, 2);

        if (false !== $pos = strpos($name, '=')) {
            if (0 === \strlen($value = substr($name, $pos + 1))) {
                // if no value after "=" then substr() returns "" since php7 only, false before
                // see https://php.net/migration70.incompatible.php#119151
                if (\PHP_VERSION_ID < 70000 && false === $value) {
                    $value = '';
                }
                array_unshift($this->parsed, $value);
            }
            $this->addLongOption(substr($name, 0, $pos), $value);
        } else {
            $this->addLongOption($name, null);
        }
    }

    /**
     * Parses an argument.
     *
     * @param string $token The current token
     *
     * @throws RuntimeException When too many arguments are given
     */
    private function parseArgument($token)
    {
        $c = \count($this->arguments);

        // if input is expecting another argument, add it
        if ($this->definition->hasArgument($c)) {
            $arg = $this->definition->getArgument($c);
            $this->arguments[$arg->getName()] = $arg->isArray() ? [$token] : $token;

        // if last argument isArray(), append token to last argument
        } elseif ($this->definition->hasArgument($c - 1) && $this->definition->getArgument($c - 1)->isArray()) {
            $arg = $this->definition->getArgument($c - 1);
            $this->arguments[$arg->getName()][] = $token;

        // unexpected argument
        } else {
            $all = $this->definition->getArguments();
            if (\count($all)) {
                throw new RuntimeException(sprintf('Too many arguments, expected arguments "%s".', implode('" "', array_keys($all))));
            }

            throw new RuntimeException(sprintf('No arguments expected, got "%s".', $token));
        }
    }

    /**
     * Adds a short option value.
     *
     * @param string $shortcut The short option key
     * @param mixed  $value    The value for the option
     *
     * @throws RuntimeException When option given doesn't exist
     */
    private function addShortOption($shortcut, $value)
    {
        if (!$this->definition->hasShortcut($shortcut)) {
            throw new RuntimeException(sprintf('The "-%s" option does not exist.', $shortcut));
        }

        $this->addLongOption($this->definition->getOptionForShortcut($shortcut)->getName(), $value);
    }

    /**
     * Adds a long option value.
     *
     * @param string $name  The long option key
     * @param mixed  $value The value for the option
     *
     * @throws RuntimeException When option given doesn't exist
     */
    private function addLongOption($name, $value)
    {
        if (!$this->definition->hasOption($name)) {
            throw new RuntimeException(sprintf('The "--%s" option does not exist.', $name));
        }

        $option = $this->definition->getOption($name);

        if (null !== $value && !$option->acceptValue()) {
            throw new RuntimeException(sprintf('The "--%s" option does not accept a value.', $name));
        }

        if (\in_array($value, ['', null], true) && $option->acceptValue() && \count($this->parsed)) {
            // if option accepts an optional or mandatory argument
            // let's see if there is one provided
            $next = array_shift($this->parsed);
            if ((isset($next[0]) && '-' !== $next[0]) || \in_array($next, ['', null], true)) {
                $value = $next;
            } else {
                array_unshift($this->parsed, $next);
            }
        }

        if (null === $value) {
            if ($option->isValueRequired()) {
                throw new RuntimeException(sprintf('The "--%s" option requires a value.', $name));
            }

            if (!$option->isArray() && !$option->isValueOptional()) {
                $value = true;
            }
        }

        if ($option->isArray()) {
            $this->options[$name][] = $value;
        } else {
            $this->options[$name] = $value;
        }
    }

    /**
     * {@inheritdoc}
     */
    public function getFirstArgument()
    {
        $isOption = false;
        foreach ($this->tokens as $i => $token) {
            if ($token && '-' === $token[0]) {
                if (false !== strpos($token, '=') || !isset($this->tokens[$i + 1])) {
                    continue;
                }

                // If it's a long option, consider that everything after "--" is the option name.
                // Otherwise, use the last char (if it's a short option set, only the last one can take a value with space separator)
                $name = '-' === $token[1] ? substr($token, 2) : substr($token, -1);
                if (!isset($this->options[$name]) && !$this->definition->hasShortcut($name)) {
                    // noop
                } elseif ((isset($this->options[$name]) || isset($this->options[$name = $this->definition->shortcutToName($name)])) && $this->tokens[$i + 1] === $this->options[$name]) {
                    $isOption = true;
                }

                continue;
            }

            if ($isOption) {
                $isOption = false;
                continue;
            }

            return $token;
        }

        return null;
    }

    /**
     * {@inheritdoc}
     */
    public function hasParameterOption($values, $onlyParams = false)
    {
        $values = (array) $values;

        foreach ($this->tokens as $token) {
            if ($onlyParams && '--' === $token) {
                return false;
            }
            foreach ($values as $value) {
                // Options with values:
                //   For long options, test for '--option=' at beginning
                //   For short options, test for '-o' at beginning
                $leading = 0 === strpos($value, '--') ? $value.'=' : $value;
                if ($token === $value || '' !== $leading && 0 === strpos($token, $leading)) {
                    return true;
                }
            }
        }

        return false;
    }

    /**
     * {@inheritdoc}
     */
    public function getParameterOption($values, $default = false, $onlyParams = false)
    {
        $values = (array) $values;
        $tokens = $this->tokens;

        while (0 < \count($tokens)) {
            $token = array_shift($tokens);
            if ($onlyParams && '--' === $token) {
                return $default;
            }

            foreach ($values as $value) {
                if ($token === $value) {
                    return array_shift($tokens);
                }
                // Options with values:
                //   For long options, test for '--option=' at beginning
                //   For short options, test for '-o' at beginning
                $leading = 0 === strpos($value, '--') ? $value.'=' : $value;
                if ('' !== $leading && 0 === strpos($token, $leading)) {
                    return substr($token, \strlen($leading));
                }
            }
        }

        return $default;
    }

    /**
     * Returns a stringified representation of the args passed to the command.
     *
     * @return string
     */
    public function __toString()
    {
        $tokens = array_map(function ($token) {
            if (preg_match('{^(-[^=]+=)(.+)}', $token, $match)) {
                return $match[1].$this->escapeToken($match[2]);
            }

            if ($token && '-' !== $token[0]) {
                return $this->escapeToken($token);
            }

            return $token;
        }, $this->tokens);

        return implode(' ', $tokens);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Input;

use Symfony\Component\Console\Exception\InvalidArgumentException;
use Symfony\Component\Console\Exception\LogicException;

/**
 * Represents a command line argument.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class InputArgument
{
    const REQUIRED = 1;
    const OPTIONAL = 2;
    const IS_ARRAY = 4;

    private $name;
    private $mode;
    private $default;
    private $description;

    /**
     * @param string               $name        The argument name
     * @param int|null             $mode        The argument mode: self::REQUIRED or self::OPTIONAL
     * @param string               $description A description text
     * @param string|string[]|null $default     The default value (for self::OPTIONAL mode only)
     *
     * @throws InvalidArgumentException When argument mode is not valid
     */
    public function __construct($name, $mode = null, $description = '', $default = null)
    {
        if (null === $mode) {
            $mode = self::OPTIONAL;
        } elseif (!\is_int($mode) || $mode > 7 || $mode < 1) {
            throw new InvalidArgumentException(sprintf('Argument mode "%s" is not valid.', $mode));
        }

        $this->name = $name;
        $this->mode = $mode;
        $this->description = $description;

        $this->setDefault($default);
    }

    /**
     * Returns the argument name.
     *
     * @return string The argument name
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * Returns true if the argument is required.
     *
     * @return bool true if parameter mode is self::REQUIRED, false otherwise
     */
    public function isRequired()
    {
        return self::REQUIRED === (self::REQUIRED & $this->mode);
    }

    /**
     * Returns true if the argument can take multiple values.
     *
     * @return bool true if mode is self::IS_ARRAY, false otherwise
     */
    public function isArray()
    {
        return self::IS_ARRAY === (self::IS_ARRAY & $this->mode);
    }

    /**
     * Sets the default value.
     *
     * @param string|string[]|null $default The default value
     *
     * @throws LogicException When incorrect default value is given
     */
    public function setDefault($default = null)
    {
        if (self::REQUIRED === $this->mode && null !== $default) {
            throw new LogicException('Cannot set a default value except for InputArgument::OPTIONAL mode.');
        }

        if ($this->isArray()) {
            if (null === $default) {
                $default = [];
            } elseif (!\is_array($default)) {
                throw new LogicException('A default value for an array argument must be an array.');
            }
        }

        $this->default = $default;
    }

    /**
     * Returns the default value.
     *
     * @return string|string[]|null The default value
     */
    public function getDefault()
    {
        return $this->default;
    }

    /**
     * Returns the description text.
     *
     * @return string The description text
     */
    public function getDescription()
    {
        return $this->description;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Input;

/**
 * InputAwareInterface should be implemented by classes that depends on the
 * Console Input.
 *
 * @author Wouter J <waldio.webdesign@gmail.com>
 */
interface InputAwareInterface
{
    /**
     * Sets the Console Input.
     */
    public function setInput(InputInterface $input);
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Input;

use Symfony\Component\Console\Exception\InvalidArgumentException;
use Symfony\Component\Console\Exception\LogicException;

/**
 * Represents a command line option.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class InputOption
{
    const VALUE_NONE = 1;
    const VALUE_REQUIRED = 2;
    const VALUE_OPTIONAL = 4;
    const VALUE_IS_ARRAY = 8;

    private $name;
    private $shortcut;
    private $mode;
    private $default;
    private $description;

    /**
     * @param string                        $name        The option name
     * @param string|array|null             $shortcut    The shortcuts, can be null, a string of shortcuts delimited by | or an array of shortcuts
     * @param int|null                      $mode        The option mode: One of the VALUE_* constants
     * @param string                        $description A description text
     * @param string|string[]|int|bool|null $default     The default value (must be null for self::VALUE_NONE)
     *
     * @throws InvalidArgumentException If option mode is invalid or incompatible
     */
    public function __construct($name, $shortcut = null, $mode = null, $description = '', $default = null)
    {
        if (0 === strpos($name, '--')) {
            $name = substr($name, 2);
        }

        if (empty($name)) {
            throw new InvalidArgumentException('An option name cannot be empty.');
        }

        if (empty($shortcut)) {
            $shortcut = null;
        }

        if (null !== $shortcut) {
            if (\is_array($shortcut)) {
                $shortcut = implode('|', $shortcut);
            }
            $shortcuts = preg_split('{(\|)-?}', ltrim($shortcut, '-'));
            $shortcuts = array_filter($shortcuts);
            $shortcut = implode('|', $shortcuts);

            if (empty($shortcut)) {
                throw new InvalidArgumentException('An option shortcut cannot be empty.');
            }
        }

        if (null === $mode) {
            $mode = self::VALUE_NONE;
        } elseif (!\is_int($mode) || $mode > 15 || $mode < 1) {
            throw new InvalidArgumentException(sprintf('Option mode "%s" is not valid.', $mode));
        }

        $this->name = $name;
        $this->shortcut = $shortcut;
        $this->mode = $mode;
        $this->description = $description;

        if ($this->isArray() && !$this->acceptValue()) {
            throw new InvalidArgumentException('Impossible to have an option mode VALUE_IS_ARRAY if the option does not accept a value.');
        }

        $this->setDefault($default);
    }

    /**
     * Returns the option shortcut.
     *
     * @return string|null The shortcut
     */
    public function getShortcut()
    {
        return $this->shortcut;
    }

    /**
     * Returns the option name.
     *
     * @return string The name
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * Returns true if the option accepts a value.
     *
     * @return bool true if value mode is not self::VALUE_NONE, false otherwise
     */
    public function acceptValue()
    {
        return $this->isValueRequired() || $this->isValueOptional();
    }

    /**
     * Returns true if the option requires a value.
     *
     * @return bool true if value mode is self::VALUE_REQUIRED, false otherwise
     */
    public function isValueRequired()
    {
        return self::VALUE_REQUIRED === (self::VALUE_REQUIRED & $this->mode);
    }

    /**
     * Returns true if the option takes an optional value.
     *
     * @return bool true if value mode is self::VALUE_OPTIONAL, false otherwise
     */
    public function isValueOptional()
    {
        return self::VALUE_OPTIONAL === (self::VALUE_OPTIONAL & $this->mode);
    }

    /**
     * Returns true if the option can take multiple values.
     *
     * @return bool true if mode is self::VALUE_IS_ARRAY, false otherwise
     */
    public function isArray()
    {
        return self::VALUE_IS_ARRAY === (self::VALUE_IS_ARRAY & $this->mode);
    }

    /**
     * Sets the default value.
     *
     * @param string|string[]|int|bool|null $default The default value
     *
     * @throws LogicException When incorrect default value is given
     */
    public function setDefault($default = null)
    {
        if (self::VALUE_NONE === (self::VALUE_NONE & $this->mode) && null !== $default) {
            throw new LogicException('Cannot set a default value when using InputOption::VALUE_NONE mode.');
        }

        if ($this->isArray()) {
            if (null === $default) {
                $default = [];
            } elseif (!\is_array($default)) {
                throw new LogicException('A default value for an array option must be an array.');
            }
        }

        $this->default = $this->acceptValue() ? $default : false;
    }

    /**
     * Returns the default value.
     *
     * @return string|string[]|int|bool|null The default value
     */
    public function getDefault()
    {
        return $this->default;
    }

    /**
     * Returns the description text.
     *
     * @return string The description text
     */
    public function getDescription()
    {
        return $this->description;
    }

    /**
     * Checks whether the given option equals this one.
     *
     * @return bool
     */
    public function equals(self $option)
    {
        return $option->getName() === $this->getName()
            && $option->getShortcut() === $this->getShortcut()
            && $option->getDefault() === $this->getDefault()
            && $option->isArray() === $this->isArray()
            && $option->isValueRequired() === $this->isValueRequired()
            && $option->isValueOptional() === $this->isValueOptional()
        ;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Input;

use Symfony\Component\Console\Exception\InvalidArgumentException;
use Symfony\Component\Console\Exception\LogicException;

/**
 * A InputDefinition represents a set of valid command line arguments and options.
 *
 * Usage:
 *
 *     $definition = new InputDefinition([
 *         new InputArgument('name', InputArgument::REQUIRED),
 *         new InputOption('foo', 'f', InputOption::VALUE_REQUIRED),
 *     ]);
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class InputDefinition
{
    private $arguments;
    private $requiredCount;
    private $hasAnArrayArgument = false;
    private $hasOptional;
    private $options;
    private $shortcuts;

    /**
     * @param array $definition An array of InputArgument and InputOption instance
     */
    public function __construct(array $definition = [])
    {
        $this->setDefinition($definition);
    }

    /**
     * Sets the definition of the input.
     */
    public function setDefinition(array $definition)
    {
        $arguments = [];
        $options = [];
        foreach ($definition as $item) {
            if ($item instanceof InputOption) {
                $options[] = $item;
            } else {
                $arguments[] = $item;
            }
        }

        $this->setArguments($arguments);
        $this->setOptions($options);
    }

    /**
     * Sets the InputArgument objects.
     *
     * @param InputArgument[] $arguments An array of InputArgument objects
     */
    public function setArguments($arguments = [])
    {
        $this->arguments = [];
        $this->requiredCount = 0;
        $this->hasOptional = false;
        $this->hasAnArrayArgument = false;
        $this->addArguments($arguments);
    }

    /**
     * Adds an array of InputArgument objects.
     *
     * @param InputArgument[] $arguments An array of InputArgument objects
     */
    public function addArguments($arguments = [])
    {
        if (null !== $arguments) {
            foreach ($arguments as $argument) {
                $this->addArgument($argument);
            }
        }
    }

    /**
     * @throws LogicException When incorrect argument is given
     */
    public function addArgument(InputArgument $argument)
    {
        if (isset($this->arguments[$argument->getName()])) {
            throw new LogicException(sprintf('An argument with name "%s" already exists.', $argument->getName()));
        }

        if ($this->hasAnArrayArgument) {
            throw new LogicException('Cannot add an argument after an array argument.');
        }

        if ($argument->isRequired() && $this->hasOptional) {
            throw new LogicException('Cannot add a required argument after an optional one.');
        }

        if ($argument->isArray()) {
            $this->hasAnArrayArgument = true;
        }

        if ($argument->isRequired()) {
            ++$this->requiredCount;
        } else {
            $this->hasOptional = true;
        }

        $this->arguments[$argument->getName()] = $argument;
    }

    /**
     * Returns an InputArgument by name or by position.
     *
     * @param string|int $name The InputArgument name or position
     *
     * @return InputArgument An InputArgument object
     *
     * @throws InvalidArgumentException When argument given doesn't exist
     */
    public function getArgument($name)
    {
        if (!$this->hasArgument($name)) {
            throw new InvalidArgumentException(sprintf('The "%s" argument does not exist.', $name));
        }

        $arguments = \is_int($name) ? array_values($this->arguments) : $this->arguments;

        return $arguments[$name];
    }

    /**
     * Returns true if an InputArgument object exists by name or position.
     *
     * @param string|int $name The InputArgument name or position
     *
     * @return bool true if the InputArgument object exists, false otherwise
     */
    public function hasArgument($name)
    {
        $arguments = \is_int($name) ? array_values($this->arguments) : $this->arguments;

        return isset($arguments[$name]);
    }

    /**
     * Gets the array of InputArgument objects.
     *
     * @return InputArgument[] An array of InputArgument objects
     */
    public function getArguments()
    {
        return $this->arguments;
    }

    /**
     * Returns the number of InputArguments.
     *
     * @return int The number of InputArguments
     */
    public function getArgumentCount()
    {
        return $this->hasAnArrayArgument ? PHP_INT_MAX : \count($this->arguments);
    }

    /**
     * Returns the number of required InputArguments.
     *
     * @return int The number of required InputArguments
     */
    public function getArgumentRequiredCount()
    {
        return $this->requiredCount;
    }

    /**
     * Gets the default values.
     *
     * @return array An array of default values
     */
    public function getArgumentDefaults()
    {
        $values = [];
        foreach ($this->arguments as $argument) {
            $values[$argument->getName()] = $argument->getDefault();
        }

        return $values;
    }

    /**
     * Sets the InputOption objects.
     *
     * @param InputOption[] $options An array of InputOption objects
     */
    public function setOptions($options = [])
    {
        $this->options = [];
        $this->shortcuts = [];
        $this->addOptions($options);
    }

    /**
     * Adds an array of InputOption objects.
     *
     * @param InputOption[] $options An array of InputOption objects
     */
    public function addOptions($options = [])
    {
        foreach ($options as $option) {
            $this->addOption($option);
        }
    }

    /**
     * @throws LogicException When option given already exist
     */
    public function addOption(InputOption $option)
    {
        if (isset($this->options[$option->getName()]) && !$option->equals($this->options[$option->getName()])) {
            throw new LogicException(sprintf('An option named "%s" already exists.', $option->getName()));
        }

        if ($option->getShortcut()) {
            foreach (explode('|', $option->getShortcut()) as $shortcut) {
                if (isset($this->shortcuts[$shortcut]) && !$option->equals($this->options[$this->shortcuts[$shortcut]])) {
                    throw new LogicException(sprintf('An option with shortcut "%s" already exists.', $shortcut));
                }
            }
        }

        $this->options[$option->getName()] = $option;
        if ($option->getShortcut()) {
            foreach (explode('|', $option->getShortcut()) as $shortcut) {
                $this->shortcuts[$shortcut] = $option->getName();
            }
        }
    }

    /**
     * Returns an InputOption by name.
     *
     * @param string $name The InputOption name
     *
     * @return InputOption A InputOption object
     *
     * @throws InvalidArgumentException When option given doesn't exist
     */
    public function getOption($name)
    {
        if (!$this->hasOption($name)) {
            throw new InvalidArgumentException(sprintf('The "--%s" option does not exist.', $name));
        }

        return $this->options[$name];
    }

    /**
     * Returns true if an InputOption object exists by name.
     *
     * This method can't be used to check if the user included the option when
     * executing the command (use getOption() instead).
     *
     * @param string $name The InputOption name
     *
     * @return bool true if the InputOption object exists, false otherwise
     */
    public function hasOption($name)
    {
        return isset($this->options[$name]);
    }

    /**
     * Gets the array of InputOption objects.
     *
     * @return InputOption[] An array of InputOption objects
     */
    public function getOptions()
    {
        return $this->options;
    }

    /**
     * Returns true if an InputOption object exists by shortcut.
     *
     * @param string $name The InputOption shortcut
     *
     * @return bool true if the InputOption object exists, false otherwise
     */
    public function hasShortcut($name)
    {
        return isset($this->shortcuts[$name]);
    }

    /**
     * Gets an InputOption by shortcut.
     *
     * @param string $shortcut The Shortcut name
     *
     * @return InputOption An InputOption object
     */
    public function getOptionForShortcut($shortcut)
    {
        return $this->getOption($this->shortcutToName($shortcut));
    }

    /**
     * Gets an array of default values.
     *
     * @return array An array of all default values
     */
    public function getOptionDefaults()
    {
        $values = [];
        foreach ($this->options as $option) {
            $values[$option->getName()] = $option->getDefault();
        }

        return $values;
    }

    /**
     * Returns the InputOption name given a shortcut.
     *
     * @param string $shortcut The shortcut
     *
     * @return string The InputOption name
     *
     * @throws InvalidArgumentException When option given does not exist
     *
     * @internal
     */
    public function shortcutToName($shortcut)
    {
        if (!isset($this->shortcuts[$shortcut])) {
            throw new InvalidArgumentException(sprintf('The "-%s" option does not exist.', $shortcut));
        }

        return $this->shortcuts[$shortcut];
    }

    /**
     * Gets the synopsis.
     *
     * @param bool $short Whether to return the short version (with options folded) or not
     *
     * @return string The synopsis
     */
    public function getSynopsis($short = false)
    {
        $elements = [];

        if ($short && $this->getOptions()) {
            $elements[] = '[options]';
        } elseif (!$short) {
            foreach ($this->getOptions() as $option) {
                $value = '';
                if ($option->acceptValue()) {
                    $value = sprintf(
                        ' %s%s%s',
                        $option->isValueOptional() ? '[' : '',
                        strtoupper($option->getName()),
                        $option->isValueOptional() ? ']' : ''
                    );
                }

                $shortcut = $option->getShortcut() ? sprintf('-%s|', $option->getShortcut()) : '';
                $elements[] = sprintf('[%s--%s%s]', $shortcut, $option->getName(), $value);
            }
        }

        if (\count($elements) && $this->getArguments()) {
            $elements[] = '[--]';
        }

        foreach ($this->getArguments() as $argument) {
            $element = '<'.$argument->getName().'>';
            if (!$argument->isRequired()) {
                $element = '['.$element.']';
            } elseif ($argument->isArray()) {
                $element .= ' ('.$element.')';
            }

            if ($argument->isArray()) {
                $element .= '...';
            }

            $elements[] = $element;
        }

        return implode(' ', $elements);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Input;

use Symfony\Component\Console\Exception\InvalidArgumentException;

/**
 * StringInput represents an input provided as a string.
 *
 * Usage:
 *
 *     $input = new StringInput('foo --bar="foobar"');
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class StringInput extends ArgvInput
{
    const REGEX_STRING = '([^\s]+?)(?:\s|(?<!\\\\)"|(?<!\\\\)\'|$)';
    const REGEX_QUOTED_STRING = '(?:"([^"\\\\]*(?:\\\\.[^"\\\\]*)*)"|\'([^\'\\\\]*(?:\\\\.[^\'\\\\]*)*)\')';

    /**
     * @param string $input A string representing the parameters from the CLI
     */
    public function __construct($input)
    {
        parent::__construct([]);

        $this->setTokens($this->tokenize($input));
    }

    /**
     * Tokenizes a string.
     *
     * @param string $input The input to tokenize
     *
     * @return array An array of tokens
     *
     * @throws InvalidArgumentException When unable to parse input (should never happen)
     */
    private function tokenize($input)
    {
        $tokens = [];
        $length = \strlen($input);
        $cursor = 0;
        while ($cursor < $length) {
            if (preg_match('/\s+/A', $input, $match, null, $cursor)) {
            } elseif (preg_match('/([^="\'\s]+?)(=?)('.self::REGEX_QUOTED_STRING.'+)/A', $input, $match, null, $cursor)) {
                $tokens[] = $match[1].$match[2].stripcslashes(str_replace(['"\'', '\'"', '\'\'', '""'], '', substr($match[3], 1, \strlen($match[3]) - 2)));
            } elseif (preg_match('/'.self::REGEX_QUOTED_STRING.'/A', $input, $match, null, $cursor)) {
                $tokens[] = stripcslashes(substr($match[0], 1, \strlen($match[0]) - 2));
            } elseif (preg_match('/'.self::REGEX_STRING.'/A', $input, $match, null, $cursor)) {
                $tokens[] = stripcslashes($match[1]);
            } else {
                // should never happen
                throw new InvalidArgumentException(sprintf('Unable to parse input near "... %s ..."', substr($input, $cursor, 10)));
            }

            $cursor += \strlen($match[0]);
        }

        return $tokens;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Input;

use Symfony\Component\Console\Exception\InvalidArgumentException;
use Symfony\Component\Console\Exception\RuntimeException;

/**
 * Input is the base class for all concrete Input classes.
 *
 * Three concrete classes are provided by default:
 *
 *  * `ArgvInput`: The input comes from the CLI arguments (argv)
 *  * `StringInput`: The input is provided as a string
 *  * `ArrayInput`: The input is provided as an array
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
abstract class Input implements InputInterface, StreamableInputInterface
{
    protected $definition;
    protected $stream;
    protected $options = [];
    protected $arguments = [];
    protected $interactive = true;

    public function __construct(InputDefinition $definition = null)
    {
        if (null === $definition) {
            $this->definition = new InputDefinition();
        } else {
            $this->bind($definition);
            $this->validate();
        }
    }

    /**
     * {@inheritdoc}
     */
    public function bind(InputDefinition $definition)
    {
        $this->arguments = [];
        $this->options = [];
        $this->definition = $definition;

        $this->parse();
    }

    /**
     * Processes command line arguments.
     */
    abstract protected function parse();

    /**
     * {@inheritdoc}
     */
    public function validate()
    {
        $definition = $this->definition;
        $givenArguments = $this->arguments;

        $missingArguments = array_filter(array_keys($definition->getArguments()), function ($argument) use ($definition, $givenArguments) {
            return !\array_key_exists($argument, $givenArguments) && $definition->getArgument($argument)->isRequired();
        });

        if (\count($missingArguments) > 0) {
            throw new RuntimeException(sprintf('Not enough arguments (missing: "%s").', implode(', ', $missingArguments)));
        }
    }

    /**
     * {@inheritdoc}
     */
    public function isInteractive()
    {
        return $this->interactive;
    }

    /**
     * {@inheritdoc}
     */
    public function setInteractive($interactive)
    {
        $this->interactive = (bool) $interactive;
    }

    /**
     * {@inheritdoc}
     */
    public function getArguments()
    {
        return array_merge($this->definition->getArgumentDefaults(), $this->arguments);
    }

    /**
     * {@inheritdoc}
     */
    public function getArgument($name)
    {
        if (!$this->definition->hasArgument($name)) {
            throw new InvalidArgumentException(sprintf('The "%s" argument does not exist.', $name));
        }

        return isset($this->arguments[$name]) ? $this->arguments[$name] : $this->definition->getArgument($name)->getDefault();
    }

    /**
     * {@inheritdoc}
     */
    public function setArgument($name, $value)
    {
        if (!$this->definition->hasArgument($name)) {
            throw new InvalidArgumentException(sprintf('The "%s" argument does not exist.', $name));
        }

        $this->arguments[$name] = $value;
    }

    /**
     * {@inheritdoc}
     */
    public function hasArgument($name)
    {
        return $this->definition->hasArgument($name);
    }

    /**
     * {@inheritdoc}
     */
    public function getOptions()
    {
        return array_merge($this->definition->getOptionDefaults(), $this->options);
    }

    /**
     * {@inheritdoc}
     */
    public function getOption($name)
    {
        if (!$this->definition->hasOption($name)) {
            throw new InvalidArgumentException(sprintf('The "%s" option does not exist.', $name));
        }

        return \array_key_exists($name, $this->options) ? $this->options[$name] : $this->definition->getOption($name)->getDefault();
    }

    /**
     * {@inheritdoc}
     */
    public function setOption($name, $value)
    {
        if (!$this->definition->hasOption($name)) {
            throw new InvalidArgumentException(sprintf('The "%s" option does not exist.', $name));
        }

        $this->options[$name] = $value;
    }

    /**
     * {@inheritdoc}
     */
    public function hasOption($name)
    {
        return $this->definition->hasOption($name);
    }

    /**
     * Escapes a token through escapeshellarg if it contains unsafe chars.
     *
     * @param string $token
     *
     * @return string
     */
    public function escapeToken($token)
    {
        return preg_match('{^[\w-]+$}', $token) ? $token : escapeshellarg($token);
    }

    /**
     * {@inheritdoc}
     */
    public function setStream($stream)
    {
        $this->stream = $stream;
    }

    /**
     * {@inheritdoc}
     */
    public function getStream()
    {
        return $this->stream;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Input;

use Symfony\Component\Console\Exception\InvalidArgumentException;
use Symfony\Component\Console\Exception\RuntimeException;

/**
 * InputInterface is the interface implemented by all input classes.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
interface InputInterface
{
    /**
     * Returns the first argument from the raw parameters (not parsed).
     *
     * @return string|null The value of the first argument or null otherwise
     */
    public function getFirstArgument();

    /**
     * Returns true if the raw parameters (not parsed) contain a value.
     *
     * This method is to be used to introspect the input parameters
     * before they have been validated. It must be used carefully.
     * Does not necessarily return the correct result for short options
     * when multiple flags are combined in the same option.
     *
     * @param string|array $values     The values to look for in the raw parameters (can be an array)
     * @param bool         $onlyParams Only check real parameters, skip those following an end of options (--) signal
     *
     * @return bool true if the value is contained in the raw parameters
     */
    public function hasParameterOption($values, $onlyParams = false);

    /**
     * Returns the value of a raw option (not parsed).
     *
     * This method is to be used to introspect the input parameters
     * before they have been validated. It must be used carefully.
     * Does not necessarily return the correct result for short options
     * when multiple flags are combined in the same option.
     *
     * @param string|array $values     The value(s) to look for in the raw parameters (can be an array)
     * @param mixed        $default    The default value to return if no result is found
     * @param bool         $onlyParams Only check real parameters, skip those following an end of options (--) signal
     *
     * @return mixed The option value
     */
    public function getParameterOption($values, $default = false, $onlyParams = false);

    /**
     * Binds the current Input instance with the given arguments and options.
     *
     * @throws RuntimeException
     */
    public function bind(InputDefinition $definition);

    /**
     * Validates the input.
     *
     * @throws RuntimeException When not enough arguments are given
     */
    public function validate();

    /**
     * Returns all the given arguments merged with the default values.
     *
     * @return array
     */
    public function getArguments();

    /**
     * Returns the argument value for a given argument name.
     *
     * @param string $name The argument name
     *
     * @return string|string[]|null The argument value
     *
     * @throws InvalidArgumentException When argument given doesn't exist
     */
    public function getArgument($name);

    /**
     * Sets an argument value by name.
     *
     * @param string               $name  The argument name
     * @param string|string[]|null $value The argument value
     *
     * @throws InvalidArgumentException When argument given doesn't exist
     */
    public function setArgument($name, $value);

    /**
     * Returns true if an InputArgument object exists by name or position.
     *
     * @param string|int $name The InputArgument name or position
     *
     * @return bool true if the InputArgument object exists, false otherwise
     */
    public function hasArgument($name);

    /**
     * Returns all the given options merged with the default values.
     *
     * @return array
     */
    public function getOptions();

    /**
     * Returns the option value for a given option name.
     *
     * @param string $name The option name
     *
     * @return string|string[]|bool|null The option value
     *
     * @throws InvalidArgumentException When option given doesn't exist
     */
    public function getOption($name);

    /**
     * Sets an option value by name.
     *
     * @param string                    $name  The option name
     * @param string|string[]|bool|null $value The option value
     *
     * @throws InvalidArgumentException When option given doesn't exist
     */
    public function setOption($name, $value);

    /**
     * Returns true if an InputOption object exists by name.
     *
     * @param string $name The InputOption name
     *
     * @return bool true if the InputOption object exists, false otherwise
     */
    public function hasOption($name);

    /**
     * Is this input means interactive?
     *
     * @return bool
     */
    public function isInteractive();

    /**
     * Sets the input interactivity.
     *
     * @param bool $interactive If the input should be interactive
     */
    public function setInteractive($interactive);
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console;

class Terminal
{
    private static $width;
    private static $height;
    private static $stty;

    /**
     * Gets the terminal width.
     *
     * @return int
     */
    public function getWidth()
    {
        $width = getenv('COLUMNS');
        if (false !== $width) {
            return (int) trim($width);
        }

        if (null === self::$width) {
            self::initDimensions();
        }

        return self::$width ?: 80;
    }

    /**
     * Gets the terminal height.
     *
     * @return int
     */
    public function getHeight()
    {
        $height = getenv('LINES');
        if (false !== $height) {
            return (int) trim($height);
        }

        if (null === self::$height) {
            self::initDimensions();
        }

        return self::$height ?: 50;
    }

    /**
     * @internal
     *
     * @return bool
     */
    public static function hasSttyAvailable()
    {
        if (null !== self::$stty) {
            return self::$stty;
        }

        exec('stty 2>&1', $output, $exitcode);

        return self::$stty = 0 === $exitcode;
    }

    private static function initDimensions()
    {
        if ('\\' === \DIRECTORY_SEPARATOR) {
            if (preg_match('/^(\d+)x(\d+)(?: \((\d+)x(\d+)\))?$/', trim(getenv('ANSICON')), $matches)) {
                // extract [w, H] from "wxh (WxH)"
                // or [w, h] from "wxh"
                self::$width = (int) $matches[1];
                self::$height = isset($matches[4]) ? (int) $matches[4] : (int) $matches[2];
            } elseif (self::hasSttyAvailable()) {
                self::initDimensionsUsingStty();
            } elseif (null !== $dimensions = self::getConsoleMode()) {
                // extract [w, h] from "wxh"
                self::$width = (int) $dimensions[0];
                self::$height = (int) $dimensions[1];
            }
        } else {
            self::initDimensionsUsingStty();
        }
    }

    private static function initDimensionsUsingStty()
    {
        if ($sttyString = self::getSttyColumns()) {
            if (preg_match('/rows.(\d+);.columns.(\d+);/i', $sttyString, $matches)) {
                // extract [w, h] from "rows h; columns w;"
                self::$width = (int) $matches[2];
                self::$height = (int) $matches[1];
            } elseif (preg_match('/;.(\d+).rows;.(\d+).columns/i', $sttyString, $matches)) {
                // extract [w, h] from "; h rows; w columns"
                self::$width = (int) $matches[2];
                self::$height = (int) $matches[1];
            }
        }
    }

    /**
     * Runs and parses mode CON if it's available, suppressing any error output.
     *
     * @return int[]|null An array composed of the width and the height or null if it could not be parsed
     */
    private static function getConsoleMode()
    {
        $info = self::readFromProcess('mode CON');

        if (null === $info || !preg_match('/--------+\r?\n.+?(\d+)\r?\n.+?(\d+)\r?\n/', $info, $matches)) {
            return null;
        }

        return [(int) $matches[2], (int) $matches[1]];
    }

    /**
     * Runs and parses stty -a if it's available, suppressing any error output.
     *
     * @return string|null
     */
    private static function getSttyColumns()
    {
        return self::readFromProcess('stty -a | grep columns');
    }

    /**
     * @param string $command
     *
     * @return string|null
     */
    private static function readFromProcess($command)
    {
        if (!\function_exists('proc_open')) {
            return null;
        }

        $descriptorspec = [
            1 => ['pipe', 'w'],
            2 => ['pipe', 'w'],
        ];

        $process = proc_open($command, $descriptorspec, $pipes, null, null, ['suppress_errors' => true]);
        if (!\is_resource($process)) {
            return null;
        }

        $info = stream_get_contents($pipes[1]);
        fclose($pipes[1]);
        fclose($pipes[2]);
        proc_close($process);

        return $info;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Output;

/**
 * ConsoleOutputInterface is the interface implemented by ConsoleOutput class.
 * This adds information about stderr output stream.
 *
 * @author Dariusz GÃ³recki <darek.krk@gmail.com>
 */
interface ConsoleOutputInterface extends OutputInterface
{
    /**
     * Gets the OutputInterface for errors.
     *
     * @return OutputInterface
     */
    public function getErrorOutput();

    public function setErrorOutput(OutputInterface $error);
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Output;

/**
 * @author Jean-FranÃ§ois Simon <contact@jfsimon.fr>
 */
class BufferedOutput extends Output
{
    private $buffer = '';

    /**
     * Empties buffer and returns its content.
     *
     * @return string
     */
    public function fetch()
    {
        $content = $this->buffer;
        $this->buffer = '';

        return $content;
    }

    /**
     * {@inheritdoc}
     */
    protected function doWrite($message, $newline)
    {
        $this->buffer .= $message;

        if ($newline) {
            $this->buffer .= PHP_EOL;
        }
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Output;

use Symfony\Component\Console\Formatter\OutputFormatterInterface;

/**
 * OutputInterface is the interface implemented by all Output classes.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
interface OutputInterface
{
    const VERBOSITY_QUIET = 16;
    const VERBOSITY_NORMAL = 32;
    const VERBOSITY_VERBOSE = 64;
    const VERBOSITY_VERY_VERBOSE = 128;
    const VERBOSITY_DEBUG = 256;

    const OUTPUT_NORMAL = 1;
    const OUTPUT_RAW = 2;
    const OUTPUT_PLAIN = 4;

    /**
     * Writes a message to the output.
     *
     * @param string|array $messages The message as an array of strings or a single string
     * @param bool         $newline  Whether to add a newline
     * @param int          $options  A bitmask of options (one of the OUTPUT or VERBOSITY constants), 0 is considered the same as self::OUTPUT_NORMAL | self::VERBOSITY_NORMAL
     */
    public function write($messages, $newline = false, $options = 0);

    /**
     * Writes a message to the output and adds a newline at the end.
     *
     * @param string|array $messages The message as an array of strings or a single string
     * @param int          $options  A bitmask of options (one of the OUTPUT or VERBOSITY constants), 0 is considered the same as self::OUTPUT_NORMAL | self::VERBOSITY_NORMAL
     */
    public function writeln($messages, $options = 0);

    /**
     * Sets the verbosity of the output.
     *
     * @param int $level The level of verbosity (one of the VERBOSITY constants)
     */
    public function setVerbosity($level);

    /**
     * Gets the current verbosity of the output.
     *
     * @return int The current level of verbosity (one of the VERBOSITY constants)
     */
    public function getVerbosity();

    /**
     * Returns whether verbosity is quiet (-q).
     *
     * @return bool true if verbosity is set to VERBOSITY_QUIET, false otherwise
     */
    public function isQuiet();

    /**
     * Returns whether verbosity is verbose (-v).
     *
     * @return bool true if verbosity is set to VERBOSITY_VERBOSE, false otherwise
     */
    public function isVerbose();

    /**
     * Returns whether verbosity is very verbose (-vv).
     *
     * @return bool true if verbosity is set to VERBOSITY_VERY_VERBOSE, false otherwise
     */
    public function isVeryVerbose();

    /**
     * Returns whether verbosity is debug (-vvv).
     *
     * @return bool true if verbosity is set to VERBOSITY_DEBUG, false otherwise
     */
    public function isDebug();

    /**
     * Sets the decorated flag.
     *
     * @param bool $decorated Whether to decorate the messages
     */
    public function setDecorated($decorated);

    /**
     * Gets the decorated flag.
     *
     * @return bool true if the output will decorate messages, false otherwise
     */
    public function isDecorated();

    public function setFormatter(OutputFormatterInterface $formatter);

    /**
     * Returns current output formatter instance.
     *
     * @return OutputFormatterInterface
     */
    public function getFormatter();
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Output;

use Symfony\Component\Console\Formatter\OutputFormatter;
use Symfony\Component\Console\Formatter\OutputFormatterInterface;

/**
 * Base class for output classes.
 *
 * There are five levels of verbosity:
 *
 *  * normal: no option passed (normal output)
 *  * verbose: -v (more output)
 *  * very verbose: -vv (highly extended output)
 *  * debug: -vvv (all debug output)
 *  * quiet: -q (no output)
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
abstract class Output implements OutputInterface
{
    private $verbosity;
    private $formatter;

    /**
     * @param int                           $verbosity The verbosity level (one of the VERBOSITY constants in OutputInterface)
     * @param bool                          $decorated Whether to decorate messages
     * @param OutputFormatterInterface|null $formatter Output formatter instance (null to use default OutputFormatter)
     */
    public function __construct($verbosity = self::VERBOSITY_NORMAL, $decorated = false, OutputFormatterInterface $formatter = null)
    {
        $this->verbosity = null === $verbosity ? self::VERBOSITY_NORMAL : $verbosity;
        $this->formatter = $formatter ?: new OutputFormatter();
        $this->formatter->setDecorated($decorated);
    }

    /**
     * {@inheritdoc}
     */
    public function setFormatter(OutputFormatterInterface $formatter)
    {
        $this->formatter = $formatter;
    }

    /**
     * {@inheritdoc}
     */
    public function getFormatter()
    {
        return $this->formatter;
    }

    /**
     * {@inheritdoc}
     */
    public function setDecorated($decorated)
    {
        $this->formatter->setDecorated($decorated);
    }

    /**
     * {@inheritdoc}
     */
    public function isDecorated()
    {
        return $this->formatter->isDecorated();
    }

    /**
     * {@inheritdoc}
     */
    public function setVerbosity($level)
    {
        $this->verbosity = (int) $level;
    }

    /**
     * {@inheritdoc}
     */
    public function getVerbosity()
    {
        return $this->verbosity;
    }

    /**
     * {@inheritdoc}
     */
    public function isQuiet()
    {
        return self::VERBOSITY_QUIET === $this->verbosity;
    }

    /**
     * {@inheritdoc}
     */
    public function isVerbose()
    {
        return self::VERBOSITY_VERBOSE <= $this->verbosity;
    }

    /**
     * {@inheritdoc}
     */
    public function isVeryVerbose()
    {
        return self::VERBOSITY_VERY_VERBOSE <= $this->verbosity;
    }

    /**
     * {@inheritdoc}
     */
    public function isDebug()
    {
        return self::VERBOSITY_DEBUG <= $this->verbosity;
    }

    /**
     * {@inheritdoc}
     */
    public function writeln($messages, $options = self::OUTPUT_NORMAL)
    {
        $this->write($messages, true, $options);
    }

    /**
     * {@inheritdoc}
     */
    public function write($messages, $newline = false, $options = self::OUTPUT_NORMAL)
    {
        $messages = (array) $messages;

        $types = self::OUTPUT_NORMAL | self::OUTPUT_RAW | self::OUTPUT_PLAIN;
        $type = $types & $options ?: self::OUTPUT_NORMAL;

        $verbosities = self::VERBOSITY_QUIET | self::VERBOSITY_NORMAL | self::VERBOSITY_VERBOSE | self::VERBOSITY_VERY_VERBOSE | self::VERBOSITY_DEBUG;
        $verbosity = $verbosities & $options ?: self::VERBOSITY_NORMAL;

        if ($verbosity > $this->getVerbosity()) {
            return;
        }

        foreach ($messages as $message) {
            switch ($type) {
                case OutputInterface::OUTPUT_NORMAL:
                    $message = $this->formatter->format($message);
                    break;
                case OutputInterface::OUTPUT_RAW:
                    break;
                case OutputInterface::OUTPUT_PLAIN:
                    $message = strip_tags($this->formatter->format($message));
                    break;
            }

            $this->doWrite($message, $newline);
        }
    }

    /**
     * Writes a message to the output.
     *
     * @param string $message A message to write to the output
     * @param bool   $newline Whether to add a newline or not
     */
    abstract protected function doWrite($message, $newline);
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Output;

use Symfony\Component\Console\Formatter\OutputFormatterInterface;

/**
 * ConsoleOutput is the default class for all CLI output. It uses STDOUT and STDERR.
 *
 * This class is a convenient wrapper around `StreamOutput` for both STDOUT and STDERR.
 *
 *     $output = new ConsoleOutput();
 *
 * This is equivalent to:
 *
 *     $output = new StreamOutput(fopen('php://stdout', 'w'));
 *     $stdErr = new StreamOutput(fopen('php://stderr', 'w'));
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ConsoleOutput extends StreamOutput implements ConsoleOutputInterface
{
    private $stderr;

    /**
     * @param int                           $verbosity The verbosity level (one of the VERBOSITY constants in OutputInterface)
     * @param bool|null                     $decorated Whether to decorate messages (null for auto-guessing)
     * @param OutputFormatterInterface|null $formatter Output formatter instance (null to use default OutputFormatter)
     */
    public function __construct($verbosity = self::VERBOSITY_NORMAL, $decorated = null, OutputFormatterInterface $formatter = null)
    {
        parent::__construct($this->openOutputStream(), $verbosity, $decorated, $formatter);

        $actualDecorated = $this->isDecorated();
        $this->stderr = new StreamOutput($this->openErrorStream(), $verbosity, $decorated, $this->getFormatter());

        if (null === $decorated) {
            $this->setDecorated($actualDecorated && $this->stderr->isDecorated());
        }
    }

    /**
     * {@inheritdoc}
     */
    public function setDecorated($decorated)
    {
        parent::setDecorated($decorated);
        $this->stderr->setDecorated($decorated);
    }

    /**
     * {@inheritdoc}
     */
    public function setFormatter(OutputFormatterInterface $formatter)
    {
        parent::setFormatter($formatter);
        $this->stderr->setFormatter($formatter);
    }

    /**
     * {@inheritdoc}
     */
    public function setVerbosity($level)
    {
        parent::setVerbosity($level);
        $this->stderr->setVerbosity($level);
    }

    /**
     * {@inheritdoc}
     */
    public function getErrorOutput()
    {
        return $this->stderr;
    }

    /**
     * {@inheritdoc}
     */
    public function setErrorOutput(OutputInterface $error)
    {
        $this->stderr = $error;
    }

    /**
     * Returns true if current environment supports writing console output to
     * STDOUT.
     *
     * @return bool
     */
    protected function hasStdoutSupport()
    {
        return false === $this->isRunningOS400();
    }

    /**
     * Returns true if current environment supports writing console output to
     * STDERR.
     *
     * @return bool
     */
    protected function hasStderrSupport()
    {
        return false === $this->isRunningOS400();
    }

    /**
     * Checks if current executing environment is IBM iSeries (OS400), which
     * doesn't properly convert character-encodings between ASCII to EBCDIC.
     *
     * @return bool
     */
    private function isRunningOS400()
    {
        $checks = [
            \function_exists('php_uname') ? php_uname('s') : '',
            getenv('OSTYPE'),
            PHP_OS,
        ];

        return false !== stripos(implode(';', $checks), 'OS400');
    }

    /**
     * @return resource
     */
    private function openOutputStream()
    {
        if (!$this->hasStdoutSupport()) {
            return fopen('php://output', 'w');
        }

        return @fopen('php://stdout', 'w') ?: fopen('php://output', 'w');
    }

    /**
     * @return resource
     */
    private function openErrorStream()
    {
        return fopen($this->hasStderrSupport() ? 'php://stderr' : 'php://output', 'w');
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Output;

use Symfony\Component\Console\Formatter\OutputFormatter;
use Symfony\Component\Console\Formatter\OutputFormatterInterface;

/**
 * NullOutput suppresses all output.
 *
 *     $output = new NullOutput();
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Tobias Schultze <http://tobion.de>
 */
class NullOutput implements OutputInterface
{
    /**
     * {@inheritdoc}
     */
    public function setFormatter(OutputFormatterInterface $formatter)
    {
        // do nothing
    }

    /**
     * {@inheritdoc}
     */
    public function getFormatter()
    {
        // to comply with the interface we must return a OutputFormatterInterface
        return new OutputFormatter();
    }

    /**
     * {@inheritdoc}
     */
    public function setDecorated($decorated)
    {
        // do nothing
    }

    /**
     * {@inheritdoc}
     */
    public function isDecorated()
    {
        return false;
    }

    /**
     * {@inheritdoc}
     */
    public function setVerbosity($level)
    {
        // do nothing
    }

    /**
     * {@inheritdoc}
     */
    public function getVerbosity()
    {
        return self::VERBOSITY_QUIET;
    }

    /**
     * {@inheritdoc}
     */
    public function isQuiet()
    {
        return true;
    }

    /**
     * {@inheritdoc}
     */
    public function isVerbose()
    {
        return false;
    }

    /**
     * {@inheritdoc}
     */
    public function isVeryVerbose()
    {
        return false;
    }

    /**
     * {@inheritdoc}
     */
    public function isDebug()
    {
        return false;
    }

    /**
     * {@inheritdoc}
     */
    public function writeln($messages, $options = self::OUTPUT_NORMAL)
    {
        // do nothing
    }

    /**
     * {@inheritdoc}
     */
    public function write($messages, $newline = false, $options = self::OUTPUT_NORMAL)
    {
        // do nothing
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Output;

use Symfony\Component\Console\Exception\InvalidArgumentException;
use Symfony\Component\Console\Exception\RuntimeException;
use Symfony\Component\Console\Formatter\OutputFormatterInterface;

/**
 * StreamOutput writes the output to a given stream.
 *
 * Usage:
 *
 *     $output = new StreamOutput(fopen('php://stdout', 'w'));
 *
 * As `StreamOutput` can use any stream, you can also use a file:
 *
 *     $output = new StreamOutput(fopen('/path/to/output.log', 'a', false));
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class StreamOutput extends Output
{
    private $stream;

    /**
     * @param resource                      $stream    A stream resource
     * @param int                           $verbosity The verbosity level (one of the VERBOSITY constants in OutputInterface)
     * @param bool|null                     $decorated Whether to decorate messages (null for auto-guessing)
     * @param OutputFormatterInterface|null $formatter Output formatter instance (null to use default OutputFormatter)
     *
     * @throws InvalidArgumentException When first argument is not a real stream
     */
    public function __construct($stream, $verbosity = self::VERBOSITY_NORMAL, $decorated = null, OutputFormatterInterface $formatter = null)
    {
        if (!\is_resource($stream) || 'stream' !== get_resource_type($stream)) {
            throw new InvalidArgumentException('The StreamOutput class needs a stream as its first argument.');
        }

        $this->stream = $stream;

        if (null === $decorated) {
            $decorated = $this->hasColorSupport();
        }

        parent::__construct($verbosity, $decorated, $formatter);
    }

    /**
     * Gets the stream attached to this StreamOutput instance.
     *
     * @return resource A stream resource
     */
    public function getStream()
    {
        return $this->stream;
    }

    /**
     * {@inheritdoc}
     */
    protected function doWrite($message, $newline)
    {
        if ($newline) {
            $message .= PHP_EOL;
        }

        if (false === @fwrite($this->stream, $message)) {
            // should never happen
            throw new RuntimeException('Unable to write output.');
        }

        fflush($this->stream);
    }

    /**
     * Returns true if the stream supports colorization.
     *
     * Colorization is disabled if not supported by the stream:
     *
     * This is tricky on Windows, because Cygwin, Msys2 etc emulate pseudo
     * terminals via named pipes, so we can only check the environment.
     *
     * Reference: Composer\XdebugHandler\Process::supportsColor
     * https://github.com/composer/xdebug-handler
     *
     * @return bool true if the stream supports colorization, false otherwise
     */
    protected function hasColorSupport()
    {
        if ('Hyper' === getenv('TERM_PROGRAM')) {
            return true;
        }

        if (\DIRECTORY_SEPARATOR === '\\') {
            return (\function_exists('sapi_windows_vt100_support')
                && @sapi_windows_vt100_support($this->stream))
                || false !== getenv('ANSICON')
                || 'ON' === getenv('ConEmuANSI')
                || 'xterm' === getenv('TERM');
        }

        if (\function_exists('stream_isatty')) {
            return @stream_isatty($this->stream);
        }

        if (\function_exists('posix_isatty')) {
            return @posix_isatty($this->stream);
        }

        $stat = @fstat($this->stream);
        // Check if formatted mode is S_IFCHR
        return $stat ? 0020000 === ($stat['mode'] & 0170000) : false;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Style;

use Symfony\Component\Console\Formatter\OutputFormatterInterface;
use Symfony\Component\Console\Helper\ProgressBar;
use Symfony\Component\Console\Output\ConsoleOutputInterface;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * Decorates output to add console style guide helpers.
 *
 * @author Kevin Bond <kevinbond@gmail.com>
 */
abstract class OutputStyle implements OutputInterface, StyleInterface
{
    private $output;

    public function __construct(OutputInterface $output)
    {
        $this->output = $output;
    }

    /**
     * {@inheritdoc}
     */
    public function newLine($count = 1)
    {
        $this->output->write(str_repeat(PHP_EOL, $count));
    }

    /**
     * @param int $max
     *
     * @return ProgressBar
     */
    public function createProgressBar($max = 0)
    {
        return new ProgressBar($this->output, $max);
    }

    /**
     * {@inheritdoc}
     */
    public function write($messages, $newline = false, $type = self::OUTPUT_NORMAL)
    {
        $this->output->write($messages, $newline, $type);
    }

    /**
     * {@inheritdoc}
     */
    public function writeln($messages, $type = self::OUTPUT_NORMAL)
    {
        $this->output->writeln($messages, $type);
    }

    /**
     * {@inheritdoc}
     */
    public function setVerbosity($level)
    {
        $this->output->setVerbosity($level);
    }

    /**
     * {@inheritdoc}
     */
    public function getVerbosity()
    {
        return $this->output->getVerbosity();
    }

    /**
     * {@inheritdoc}
     */
    public function setDecorated($decorated)
    {
        $this->output->setDecorated($decorated);
    }

    /**
     * {@inheritdoc}
     */
    public function isDecorated()
    {
        return $this->output->isDecorated();
    }

    /**
     * {@inheritdoc}
     */
    public function setFormatter(OutputFormatterInterface $formatter)
    {
        $this->output->setFormatter($formatter);
    }

    /**
     * {@inheritdoc}
     */
    public function getFormatter()
    {
        return $this->output->getFormatter();
    }

    /**
     * {@inheritdoc}
     */
    public function isQuiet()
    {
        return $this->output->isQuiet();
    }

    /**
     * {@inheritdoc}
     */
    public function isVerbose()
    {
        return $this->output->isVerbose();
    }

    /**
     * {@inheritdoc}
     */
    public function isVeryVerbose()
    {
        return $this->output->isVeryVerbose();
    }

    /**
     * {@inheritdoc}
     */
    public function isDebug()
    {
        return $this->output->isDebug();
    }

    protected function getErrorOutput()
    {
        if (!$this->output instanceof ConsoleOutputInterface) {
            return $this->output;
        }

        return $this->output->getErrorOutput();
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Style;

use Symfony\Component\Console\Exception\RuntimeException;
use Symfony\Component\Console\Formatter\OutputFormatter;
use Symfony\Component\Console\Helper\Helper;
use Symfony\Component\Console\Helper\ProgressBar;
use Symfony\Component\Console\Helper\SymfonyQuestionHelper;
use Symfony\Component\Console\Helper\Table;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\BufferedOutput;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Question\ChoiceQuestion;
use Symfony\Component\Console\Question\ConfirmationQuestion;
use Symfony\Component\Console\Question\Question;
use Symfony\Component\Console\Terminal;

/**
 * Output decorator helpers for the Symfony Style Guide.
 *
 * @author Kevin Bond <kevinbond@gmail.com>
 */
class SymfonyStyle extends OutputStyle
{
    const MAX_LINE_LENGTH = 120;

    private $input;
    private $questionHelper;
    private $progressBar;
    private $lineLength;
    private $bufferedOutput;

    public function __construct(InputInterface $input, OutputInterface $output)
    {
        $this->input = $input;
        $this->bufferedOutput = new BufferedOutput($output->getVerbosity(), false, clone $output->getFormatter());
        // Windows cmd wraps lines as soon as the terminal width is reached, whether there are following chars or not.
        $width = (new Terminal())->getWidth() ?: self::MAX_LINE_LENGTH;
        $this->lineLength = min($width - (int) (\DIRECTORY_SEPARATOR === '\\'), self::MAX_LINE_LENGTH);

        parent::__construct($output);
    }

    /**
     * Formats a message as a block of text.
     *
     * @param string|array $messages The message to write in the block
     * @param string|null  $type     The block type (added in [] on first line)
     * @param string|null  $style    The style to apply to the whole block
     * @param string       $prefix   The prefix for the block
     * @param bool         $padding  Whether to add vertical padding
     * @param bool         $escape   Whether to escape the message
     */
    public function block($messages, $type = null, $style = null, $prefix = ' ', $padding = false, $escape = true)
    {
        $messages = \is_array($messages) ? array_values($messages) : [$messages];

        $this->autoPrependBlock();
        $this->writeln($this->createBlock($messages, $type, $style, $prefix, $padding, $escape));
        $this->newLine();
    }

    /**
     * {@inheritdoc}
     */
    public function title($message)
    {
        $this->autoPrependBlock();
        $this->writeln([
            sprintf('<comment>%s</>', OutputFormatter::escapeTrailingBackslash($message)),
            sprintf('<comment>%s</>', str_repeat('=', Helper::strlenWithoutDecoration($this->getFormatter(), $message))),
        ]);
        $this->newLine();
    }

    /**
     * {@inheritdoc}
     */
    public function section($message)
    {
        $this->autoPrependBlock();
        $this->writeln([
            sprintf('<comment>%s</>', OutputFormatter::escapeTrailingBackslash($message)),
            sprintf('<comment>%s</>', str_repeat('-', Helper::strlenWithoutDecoration($this->getFormatter(), $message))),
        ]);
        $this->newLine();
    }

    /**
     * {@inheritdoc}
     */
    public function listing(array $elements)
    {
        $this->autoPrependText();
        $elements = array_map(function ($element) {
            return sprintf(' * %s', $element);
        }, $elements);

        $this->writeln($elements);
        $this->newLine();
    }

    /**
     * {@inheritdoc}
     */
    public function text($message)
    {
        $this->autoPrependText();

        $messages = \is_array($message) ? array_values($message) : [$message];
        foreach ($messages as $message) {
            $this->writeln(sprintf(' %s', $message));
        }
    }

    /**
     * Formats a command comment.
     *
     * @param string|array $message
     */
    public function comment($message)
    {
        $this->block($message, null, null, '<fg=default;bg=default> // </>', false, false);
    }

    /**
     * {@inheritdoc}
     */
    public function success($message)
    {
        $this->block($message, 'OK', 'fg=black;bg=green', ' ', true);
    }

    /**
     * {@inheritdoc}
     */
    public function error($message)
    {
        $this->block($message, 'ERROR', 'fg=white;bg=red', ' ', true);
    }

    /**
     * {@inheritdoc}
     */
    public function warning($message)
    {
        $this->block($message, 'WARNING', 'fg=white;bg=red', ' ', true);
    }

    /**
     * {@inheritdoc}
     */
    public function note($message)
    {
        $this->block($message, 'NOTE', 'fg=yellow', ' ! ');
    }

    /**
     * {@inheritdoc}
     */
    public function caution($message)
    {
        $this->block($message, 'CAUTION', 'fg=white;bg=red', ' ! ', true);
    }

    /**
     * {@inheritdoc}
     */
    public function table(array $headers, array $rows)
    {
        $style = clone Table::getStyleDefinition('symfony-style-guide');
        $style->setCellHeaderFormat('<info>%s</info>');

        $table = new Table($this);
        $table->setHeaders($headers);
        $table->setRows($rows);
        $table->setStyle($style);

        $table->render();
        $this->newLine();
    }

    /**
     * {@inheritdoc}
     */
    public function ask($question, $default = null, $validator = null)
    {
        $question = new Question($question, $default);
        $question->setValidator($validator);

        return $this->askQuestion($question);
    }

    /**
     * {@inheritdoc}
     */
    public function askHidden($question, $validator = null)
    {
        $question = new Question($question);

        $question->setHidden(true);
        $question->setValidator($validator);

        return $this->askQuestion($question);
    }

    /**
     * {@inheritdoc}
     */
    public function confirm($question, $default = true)
    {
        return $this->askQuestion(new ConfirmationQuestion($question, $default));
    }

    /**
     * {@inheritdoc}
     */
    public function choice($question, array $choices, $default = null)
    {
        if (null !== $default) {
            $values = array_flip($choices);
            $default = $values[$default];
        }

        return $this->askQuestion(new ChoiceQuestion($question, $choices, $default));
    }

    /**
     * {@inheritdoc}
     */
    public function progressStart($max = 0)
    {
        $this->progressBar = $this->createProgressBar($max);
        $this->progressBar->start();
    }

    /**
     * {@inheritdoc}
     */
    public function progressAdvance($step = 1)
    {
        $this->getProgressBar()->advance($step);
    }

    /**
     * {@inheritdoc}
     */
    public function progressFinish()
    {
        $this->getProgressBar()->finish();
        $this->newLine(2);
        $this->progressBar = null;
    }

    /**
     * {@inheritdoc}
     */
    public function createProgressBar($max = 0)
    {
        $progressBar = parent::createProgressBar($max);

        if ('\\' !== \DIRECTORY_SEPARATOR || 'Hyper' === getenv('TERM_PROGRAM')) {
            $progressBar->setEmptyBarCharacter('â–‘'); // light shade character \u2591
            $progressBar->setProgressCharacter('');
            $progressBar->setBarCharacter('â–“'); // dark shade character \u2593
        }

        return $progressBar;
    }

    /**
     * @return mixed
     */
    public function askQuestion(Question $question)
    {
        if ($this->input->isInteractive()) {
            $this->autoPrependBlock();
        }

        if (!$this->questionHelper) {
            $this->questionHelper = new SymfonyQuestionHelper();
        }

        $answer = $this->questionHelper->ask($this->input, $this, $question);

        if ($this->input->isInteractive()) {
            $this->newLine();
            $this->bufferedOutput->write("\n");
        }

        return $answer;
    }

    /**
     * {@inheritdoc}
     */
    public function writeln($messages, $type = self::OUTPUT_NORMAL)
    {
        parent::writeln($messages, $type);
        $this->bufferedOutput->writeln($this->reduceBuffer($messages), $type);
    }

    /**
     * {@inheritdoc}
     */
    public function write($messages, $newline = false, $type = self::OUTPUT_NORMAL)
    {
        parent::write($messages, $newline, $type);
        $this->bufferedOutput->write($this->reduceBuffer($messages), $newline, $type);
    }

    /**
     * {@inheritdoc}
     */
    public function newLine($count = 1)
    {
        parent::newLine($count);
        $this->bufferedOutput->write(str_repeat("\n", $count));
    }

    /**
     * Returns a new instance which makes use of stderr if available.
     *
     * @return self
     */
    public function getErrorStyle()
    {
        return new self($this->input, $this->getErrorOutput());
    }

    /**
     * @return ProgressBar
     */
    private function getProgressBar()
    {
        if (!$this->progressBar) {
            throw new RuntimeException('The ProgressBar is not started.');
        }

        return $this->progressBar;
    }

    private function autoPrependBlock()
    {
        $chars = substr(str_replace(PHP_EOL, "\n", $this->bufferedOutput->fetch()), -2);

        if (!isset($chars[0])) {
            $this->newLine(); //empty history, so we should start with a new line.

            return;
        }
        //Prepend new line for each non LF chars (This means no blank line was output before)
        $this->newLine(2 - substr_count($chars, "\n"));
    }

    private function autoPrependText()
    {
        $fetched = $this->bufferedOutput->fetch();
        //Prepend new line if last char isn't EOL:
        if ("\n" !== substr($fetched, -1)) {
            $this->newLine();
        }
    }

    private function reduceBuffer($messages)
    {
        // We need to know if the two last chars are PHP_EOL
        // Preserve the last 4 chars inserted (PHP_EOL on windows is two chars) in the history buffer
        return array_map(function ($value) {
            return substr($value, -4);
        }, array_merge([$this->bufferedOutput->fetch()], (array) $messages));
    }

    private function createBlock($messages, $type = null, $style = null, $prefix = ' ', $padding = false, $escape = false)
    {
        $indentLength = 0;
        $prefixLength = Helper::strlenWithoutDecoration($this->getFormatter(), $prefix);
        $lines = [];

        if (null !== $type) {
            $type = sprintf('[%s] ', $type);
            $indentLength = \strlen($type);
            $lineIndentation = str_repeat(' ', $indentLength);
        }

        // wrap and add newlines for each element
        foreach ($messages as $key => $message) {
            if ($escape) {
                $message = OutputFormatter::escape($message);
            }

            $lines = array_merge($lines, explode(PHP_EOL, wordwrap($message, $this->lineLength - $prefixLength - $indentLength, PHP_EOL, true)));

            if (\count($messages) > 1 && $key < \count($messages) - 1) {
                $lines[] = '';
            }
        }

        $firstLineIndex = 0;
        if ($padding && $this->isDecorated()) {
            $firstLineIndex = 1;
            array_unshift($lines, '');
            $lines[] = '';
        }

        foreach ($lines as $i => &$line) {
            if (null !== $type) {
                $line = $firstLineIndex === $i ? $type.$line : $lineIndentation.$line;
            }

            $line = $prefix.$line;
            $line .= str_repeat(' ', $this->lineLength - Helper::strlenWithoutDecoration($this->getFormatter(), $line));

            if ($style) {
                $line = sprintf('<%s>%s</>', $style, $line);
            }
        }

        return $lines;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Style;

/**
 * Output style helpers.
 *
 * @author Kevin Bond <kevinbond@gmail.com>
 */
interface StyleInterface
{
    /**
     * Formats a command title.
     *
     * @param string $message
     */
    public function title($message);

    /**
     * Formats a section title.
     *
     * @param string $message
     */
    public function section($message);

    /**
     * Formats a list.
     */
    public function listing(array $elements);

    /**
     * Formats informational text.
     *
     * @param string|array $message
     */
    public function text($message);

    /**
     * Formats a success result bar.
     *
     * @param string|array $message
     */
    public function success($message);

    /**
     * Formats an error result bar.
     *
     * @param string|array $message
     */
    public function error($message);

    /**
     * Formats an warning result bar.
     *
     * @param string|array $message
     */
    public function warning($message);

    /**
     * Formats a note admonition.
     *
     * @param string|array $message
     */
    public function note($message);

    /**
     * Formats a caution admonition.
     *
     * @param string|array $message
     */
    public function caution($message);

    /**
     * Formats a table.
     */
    public function table(array $headers, array $rows);

    /**
     * Asks a question.
     *
     * @param string        $question
     * @param string|null   $default
     * @param callable|null $validator
     *
     * @return mixed
     */
    public function ask($question, $default = null, $validator = null);

    /**
     * Asks a question with the user input hidden.
     *
     * @param string        $question
     * @param callable|null $validator
     *
     * @return mixed
     */
    public function askHidden($question, $validator = null);

    /**
     * Asks for confirmation.
     *
     * @param string $question
     * @param bool   $default
     *
     * @return bool
     */
    public function confirm($question, $default = true);

    /**
     * Asks a choice question.
     *
     * @param string          $question
     * @param string|int|null $default
     *
     * @return mixed
     */
    public function choice($question, array $choices, $default = null);

    /**
     * Add newline(s).
     *
     * @param int $count The number of newlines
     */
    public function newLine($count = 1);

    /**
     * Starts the progress output.
     *
     * @param int $max Maximum steps (0 if unknown)
     */
    public function progressStart($max = 0);

    /**
     * Advances the progress output X steps.
     *
     * @param int $step Number of steps to advance
     */
    public function progressAdvance($step = 1);

    /**
     * Finishes the progress output.
     */
    public function progressFinish();
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Question;

use Symfony\Component\Console\Exception\InvalidArgumentException;

/**
 * Represents a choice question.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ChoiceQuestion extends Question
{
    private $choices;
    private $multiselect = false;
    private $prompt = ' > ';
    private $errorMessage = 'Value "%s" is invalid';

    /**
     * @param string $question The question to ask to the user
     * @param array  $choices  The list of available choices
     * @param mixed  $default  The default answer to return
     */
    public function __construct($question, array $choices, $default = null)
    {
        if (!$choices) {
            throw new \LogicException('Choice question must have at least 1 choice available.');
        }

        parent::__construct($question, $default);

        $this->choices = $choices;
        $this->setValidator($this->getDefaultValidator());
        $this->setAutocompleterValues($choices);
    }

    /**
     * Returns available choices.
     *
     * @return array
     */
    public function getChoices()
    {
        return $this->choices;
    }

    /**
     * Sets multiselect option.
     *
     * When multiselect is set to true, multiple choices can be answered.
     *
     * @param bool $multiselect
     *
     * @return $this
     */
    public function setMultiselect($multiselect)
    {
        $this->multiselect = $multiselect;
        $this->setValidator($this->getDefaultValidator());

        return $this;
    }

    /**
     * Returns whether the choices are multiselect.
     *
     * @return bool
     */
    public function isMultiselect()
    {
        return $this->multiselect;
    }

    /**
     * Gets the prompt for choices.
     *
     * @return string
     */
    public function getPrompt()
    {
        return $this->prompt;
    }

    /**
     * Sets the prompt for choices.
     *
     * @param string $prompt
     *
     * @return $this
     */
    public function setPrompt($prompt)
    {
        $this->prompt = $prompt;

        return $this;
    }

    /**
     * Sets the error message for invalid values.
     *
     * The error message has a string placeholder (%s) for the invalid value.
     *
     * @param string $errorMessage
     *
     * @return $this
     */
    public function setErrorMessage($errorMessage)
    {
        $this->errorMessage = $errorMessage;
        $this->setValidator($this->getDefaultValidator());

        return $this;
    }

    /**
     * Returns the default answer validator.
     *
     * @return callable
     */
    private function getDefaultValidator()
    {
        $choices = $this->choices;
        $errorMessage = $this->errorMessage;
        $multiselect = $this->multiselect;
        $isAssoc = $this->isAssoc($choices);

        return function ($selected) use ($choices, $errorMessage, $multiselect, $isAssoc) {
            if ($multiselect) {
                // Check for a separated comma values
                if (!preg_match('/^[^,]+(?:,[^,]+)*$/', $selected, $matches)) {
                    throw new InvalidArgumentException(sprintf($errorMessage, $selected));
                }

                $selectedChoices = array_map('trim', explode(',', $selected));
            } else {
                $selectedChoices = [trim($selected)];
            }

            $multiselectChoices = [];
            foreach ($selectedChoices as $value) {
                $results = [];
                foreach ($choices as $key => $choice) {
                    if ($choice === $value) {
                        $results[] = $key;
                    }
                }

                if (\count($results) > 1) {
                    throw new InvalidArgumentException(sprintf('The provided answer is ambiguous. Value should be one of %s.', implode(' or ', $results)));
                }

                $result = array_search($value, $choices);

                if (!$isAssoc) {
                    if (false !== $result) {
                        $result = $choices[$result];
                    } elseif (isset($choices[$value])) {
                        $result = $choices[$value];
                    }
                } elseif (false === $result && isset($choices[$value])) {
                    $result = $value;
                }

                if (false === $result) {
                    throw new InvalidArgumentException(sprintf($errorMessage, $value));
                }

                $multiselectChoices[] = (string) $result;
            }

            if ($multiselect) {
                return $multiselectChoices;
            }

            return current($multiselectChoices);
        };
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Question;

use Symfony\Component\Console\Exception\InvalidArgumentException;
use Symfony\Component\Console\Exception\LogicException;

/**
 * Represents a Question.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class Question
{
    private $question;
    private $attempts;
    private $hidden = false;
    private $hiddenFallback = true;
    private $autocompleterValues;
    private $validator;
    private $default;
    private $normalizer;

    /**
     * @param string $question The question to ask to the user
     * @param mixed  $default  The default answer to return if the user enters nothing
     */
    public function __construct($question, $default = null)
    {
        $this->question = $question;
        $this->default = $default;
    }

    /**
     * Returns the question.
     *
     * @return string
     */
    public function getQuestion()
    {
        return $this->question;
    }

    /**
     * Returns the default answer.
     *
     * @return mixed
     */
    public function getDefault()
    {
        return $this->default;
    }

    /**
     * Returns whether the user response must be hidden.
     *
     * @return bool
     */
    public function isHidden()
    {
        return $this->hidden;
    }

    /**
     * Sets whether the user response must be hidden or not.
     *
     * @param bool $hidden
     *
     * @return $this
     *
     * @throws LogicException In case the autocompleter is also used
     */
    public function setHidden($hidden)
    {
        if ($this->autocompleterValues) {
            throw new LogicException('A hidden question cannot use the autocompleter.');
        }

        $this->hidden = (bool) $hidden;

        return $this;
    }

    /**
     * In case the response can not be hidden, whether to fallback on non-hidden question or not.
     *
     * @return bool
     */
    public function isHiddenFallback()
    {
        return $this->hiddenFallback;
    }

    /**
     * Sets whether to fallback on non-hidden question if the response can not be hidden.
     *
     * @param bool $fallback
     *
     * @return $this
     */
    public function setHiddenFallback($fallback)
    {
        $this->hiddenFallback = (bool) $fallback;

        return $this;
    }

    /**
     * Gets values for the autocompleter.
     *
     * @return iterable|null
     */
    public function getAutocompleterValues()
    {
        return $this->autocompleterValues;
    }

    /**
     * Sets values for the autocompleter.
     *
     * @param iterable|null $values
     *
     * @return $this
     *
     * @throws InvalidArgumentException
     * @throws LogicException
     */
    public function setAutocompleterValues($values)
    {
        if (\is_array($values)) {
            $values = $this->isAssoc($values) ? array_merge(array_keys($values), array_values($values)) : array_values($values);
        }

        if (null !== $values && !\is_array($values) && !$values instanceof \Traversable) {
            throw new InvalidArgumentException('Autocompleter values can be either an array, `null` or a `Traversable` object.');
        }

        if ($this->hidden) {
            throw new LogicException('A hidden question cannot use the autocompleter.');
        }

        $this->autocompleterValues = $values;

        return $this;
    }

    /**
     * Sets a validator for the question.
     *
     * @return $this
     */
    public function setValidator(callable $validator = null)
    {
        $this->validator = $validator;

        return $this;
    }

    /**
     * Gets the validator for the question.
     *
     * @return callable|null
     */
    public function getValidator()
    {
        return $this->validator;
    }

    /**
     * Sets the maximum number of attempts.
     *
     * Null means an unlimited number of attempts.
     *
     * @param int|null $attempts
     *
     * @return $this
     *
     * @throws InvalidArgumentException in case the number of attempts is invalid
     */
    public function setMaxAttempts($attempts)
    {
        if (null !== $attempts && $attempts < 1) {
            throw new InvalidArgumentException('Maximum number of attempts must be a positive value.');
        }

        $this->attempts = $attempts;

        return $this;
    }

    /**
     * Gets the maximum number of attempts.
     *
     * Null means an unlimited number of attempts.
     *
     * @return int|null
     */
    public function getMaxAttempts()
    {
        return $this->attempts;
    }

    /**
     * Sets a normalizer for the response.
     *
     * The normalizer can be a callable (a string), a closure or a class implementing __invoke.
     *
     * @return $this
     */
    public function setNormalizer(callable $normalizer)
    {
        $this->normalizer = $normalizer;

        return $this;
    }

    /**
     * Gets the normalizer for the response.
     *
     * The normalizer can ba a callable (a string), a closure or a class implementing __invoke.
     *
     * @return callable|null
     */
    public function getNormalizer()
    {
        return $this->normalizer;
    }

    protected function isAssoc($array)
    {
        return (bool) \count(array_filter(array_keys($array), 'is_string'));
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Question;

/**
 * Represents a yes/no question.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ConfirmationQuestion extends Question
{
    private $trueAnswerRegex;

    /**
     * @param string $question        The question to ask to the user
     * @param bool   $default         The default answer to return, true or false
     * @param string $trueAnswerRegex A regex to match the "yes" answer
     */
    public function __construct($question, $default = true, $trueAnswerRegex = '/^y/i')
    {
        parent::__construct($question, (bool) $default);

        $this->trueAnswerRegex = $trueAnswerRegex;
        $this->setNormalizer($this->getDefaultNormalizer());
    }

    /**
     * Returns the default answer normalizer.
     *
     * @return callable
     */
    private function getDefaultNormalizer()
    {
        $default = $this->getDefault();
        $regex = $this->trueAnswerRegex;

        return function ($answer) use ($default, $regex) {
            if (\is_bool($answer)) {
                return $answer;
            }

            $answerIsTrue = (bool) preg_match($regex, $answer);
            if (false === $default) {
                return $answer && $answerIsTrue;
            }

            return '' === $answer || $answerIsTrue;
        };
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Formatter;

use Symfony\Component\Console\Exception\InvalidArgumentException;

/**
 * Formatter style class for defining styles.
 *
 * @author Konstantin Kudryashov <ever.zet@gmail.com>
 */
class OutputFormatterStyle implements OutputFormatterStyleInterface
{
    private static $availableForegroundColors = [
        'black' => ['set' => 30, 'unset' => 39],
        'red' => ['set' => 31, 'unset' => 39],
        'green' => ['set' => 32, 'unset' => 39],
        'yellow' => ['set' => 33, 'unset' => 39],
        'blue' => ['set' => 34, 'unset' => 39],
        'magenta' => ['set' => 35, 'unset' => 39],
        'cyan' => ['set' => 36, 'unset' => 39],
        'white' => ['set' => 37, 'unset' => 39],
        'default' => ['set' => 39, 'unset' => 39],
    ];
    private static $availableBackgroundColors = [
        'black' => ['set' => 40, 'unset' => 49],
        'red' => ['set' => 41, 'unset' => 49],
        'green' => ['set' => 42, 'unset' => 49],
        'yellow' => ['set' => 43, 'unset' => 49],
        'blue' => ['set' => 44, 'unset' => 49],
        'magenta' => ['set' => 45, 'unset' => 49],
        'cyan' => ['set' => 46, 'unset' => 49],
        'white' => ['set' => 47, 'unset' => 49],
        'default' => ['set' => 49, 'unset' => 49],
    ];
    private static $availableOptions = [
        'bold' => ['set' => 1, 'unset' => 22],
        'underscore' => ['set' => 4, 'unset' => 24],
        'blink' => ['set' => 5, 'unset' => 25],
        'reverse' => ['set' => 7, 'unset' => 27],
        'conceal' => ['set' => 8, 'unset' => 28],
    ];

    private $foreground;
    private $background;
    private $options = [];

    /**
     * Initializes output formatter style.
     *
     * @param string|null $foreground The style foreground color name
     * @param string|null $background The style background color name
     * @param array       $options    The style options
     */
    public function __construct($foreground = null, $background = null, array $options = [])
    {
        if (null !== $foreground) {
            $this->setForeground($foreground);
        }
        if (null !== $background) {
            $this->setBackground($background);
        }
        if (\count($options)) {
            $this->setOptions($options);
        }
    }

    /**
     * {@inheritdoc}
     */
    public function setForeground($color = null)
    {
        if (null === $color) {
            $this->foreground = null;

            return;
        }

        if (!isset(static::$availableForegroundColors[$color])) {
            throw new InvalidArgumentException(sprintf('Invalid foreground color specified: "%s". Expected one of (%s)', $color, implode(', ', array_keys(static::$availableForegroundColors))));
        }

        $this->foreground = static::$availableForegroundColors[$color];
    }

    /**
     * {@inheritdoc}
     */
    public function setBackground($color = null)
    {
        if (null === $color) {
            $this->background = null;

            return;
        }

        if (!isset(static::$availableBackgroundColors[$color])) {
            throw new InvalidArgumentException(sprintf('Invalid background color specified: "%s". Expected one of (%s)', $color, implode(', ', array_keys(static::$availableBackgroundColors))));
        }

        $this->background = static::$availableBackgroundColors[$color];
    }

    /**
     * {@inheritdoc}
     */
    public function setOption($option)
    {
        if (!isset(static::$availableOptions[$option])) {
            throw new InvalidArgumentException(sprintf('Invalid option specified: "%s". Expected one of (%s)', $option, implode(', ', array_keys(static::$availableOptions))));
        }

        if (!\in_array(static::$availableOptions[$option], $this->options)) {
            $this->options[] = static::$availableOptions[$option];
        }
    }

    /**
     * {@inheritdoc}
     */
    public function unsetOption($option)
    {
        if (!isset(static::$availableOptions[$option])) {
            throw new InvalidArgumentException(sprintf('Invalid option specified: "%s". Expected one of (%s)', $option, implode(', ', array_keys(static::$availableOptions))));
        }

        $pos = array_search(static::$availableOptions[$option], $this->options);
        if (false !== $pos) {
            unset($this->options[$pos]);
        }
    }

    /**
     * {@inheritdoc}
     */
    public function setOptions(array $options)
    {
        $this->options = [];

        foreach ($options as $option) {
            $this->setOption($option);
        }
    }

    /**
     * {@inheritdoc}
     */
    public function apply($text)
    {
        $setCodes = [];
        $unsetCodes = [];

        if (null !== $this->foreground) {
            $setCodes[] = $this->foreground['set'];
            $unsetCodes[] = $this->foreground['unset'];
        }
        if (null !== $this->background) {
            $setCodes[] = $this->background['set'];
            $unsetCodes[] = $this->background['unset'];
        }
        if (\count($this->options)) {
            foreach ($this->options as $option) {
                $setCodes[] = $option['set'];
                $unsetCodes[] = $option['unset'];
            }
        }

        if (0 === \count($setCodes)) {
            return $text;
        }

        return sprintf("\033[%sm%s\033[%sm", implode(';', $setCodes), $text, implode(';', $unsetCodes));
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Formatter;

/**
 * Formatter style interface for defining styles.
 *
 * @author Konstantin Kudryashov <ever.zet@gmail.com>
 */
interface OutputFormatterStyleInterface
{
    /**
     * Sets style foreground color.
     *
     * @param string|null $color The color name
     */
    public function setForeground($color = null);

    /**
     * Sets style background color.
     *
     * @param string $color The color name
     */
    public function setBackground($color = null);

    /**
     * Sets some specific style option.
     *
     * @param string $option The option name
     */
    public function setOption($option);

    /**
     * Unsets some specific style option.
     *
     * @param string $option The option name
     */
    public function unsetOption($option);

    /**
     * Sets multiple style options at once.
     */
    public function setOptions(array $options);

    /**
     * Applies the style to a given text.
     *
     * @param string $text The text to style
     *
     * @return string
     */
    public function apply($text);
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Formatter;

/**
 * Formatter interface for console output.
 *
 * @author Konstantin Kudryashov <ever.zet@gmail.com>
 */
interface OutputFormatterInterface
{
    /**
     * Sets the decorated flag.
     *
     * @param bool $decorated Whether to decorate the messages or not
     */
    public function setDecorated($decorated);

    /**
     * Gets the decorated flag.
     *
     * @return bool true if the output will decorate messages, false otherwise
     */
    public function isDecorated();

    /**
     * Sets a new style.
     *
     * @param string                        $name  The style name
     * @param OutputFormatterStyleInterface $style The style instance
     */
    public function setStyle($name, OutputFormatterStyleInterface $style);

    /**
     * Checks if output formatter has style with specified name.
     *
     * @param string $name
     *
     * @return bool
     */
    public function hasStyle($name);

    /**
     * Gets style options from style with specified name.
     *
     * @param string $name
     *
     * @return OutputFormatterStyleInterface
     *
     * @throws \InvalidArgumentException When style isn't defined
     */
    public function getStyle($name);

    /**
     * Formats a message according to the given styles.
     *
     * @param string $message The message to style
     *
     * @return string The styled message
     */
    public function format($message);
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Formatter;

use Symfony\Component\Console\Exception\InvalidArgumentException;

/**
 * Formatter class for console output.
 *
 * @author Konstantin Kudryashov <ever.zet@gmail.com>
 */
class OutputFormatter implements OutputFormatterInterface
{
    private $decorated;
    private $styles = [];
    private $styleStack;

    /**
     * Escapes "<" special char in given text.
     *
     * @param string $text Text to escape
     *
     * @return string Escaped text
     */
    public static function escape($text)
    {
        $text = preg_replace('/([^\\\\]?)</', '$1\\<', $text);

        return self::escapeTrailingBackslash($text);
    }

    /**
     * Escapes trailing "\" in given text.
     *
     * @param string $text Text to escape
     *
     * @return string Escaped text
     *
     * @internal
     */
    public static function escapeTrailingBackslash($text)
    {
        if ('\\' === substr($text, -1)) {
            $len = \strlen($text);
            $text = rtrim($text, '\\');
            $text = str_replace("\0", '', $text);
            $text .= str_repeat("\0", $len - \strlen($text));
        }

        return $text;
    }

    /**
     * Initializes console output formatter.
     *
     * @param bool                            $decorated Whether this formatter should actually decorate strings
     * @param OutputFormatterStyleInterface[] $styles    Array of "name => FormatterStyle" instances
     */
    public function __construct($decorated = false, array $styles = [])
    {
        $this->decorated = (bool) $decorated;

        $this->setStyle('error', new OutputFormatterStyle('white', 'red'));
        $this->setStyle('info', new OutputFormatterStyle('green'));
        $this->setStyle('comment', new OutputFormatterStyle('yellow'));
        $this->setStyle('question', new OutputFormatterStyle('black', 'cyan'));

        foreach ($styles as $name => $style) {
            $this->setStyle($name, $style);
        }

        $this->styleStack = new OutputFormatterStyleStack();
    }

    /**
     * {@inheritdoc}
     */
    public function setDecorated($decorated)
    {
        $this->decorated = (bool) $decorated;
    }

    /**
     * {@inheritdoc}
     */
    public function isDecorated()
    {
        return $this->decorated;
    }

    /**
     * {@inheritdoc}
     */
    public function setStyle($name, OutputFormatterStyleInterface $style)
    {
        $this->styles[strtolower($name)] = $style;
    }

    /**
     * {@inheritdoc}
     */
    public function hasStyle($name)
    {
        return isset($this->styles[strtolower($name)]);
    }

    /**
     * {@inheritdoc}
     */
    public function getStyle($name)
    {
        if (!$this->hasStyle($name)) {
            throw new InvalidArgumentException(sprintf('Undefined style: %s', $name));
        }

        return $this->styles[strtolower($name)];
    }

    /**
     * {@inheritdoc}
     */
    public function format($message)
    {
        $message = (string) $message;
        $offset = 0;
        $output = '';
        $tagRegex = '[a-z][a-z0-9,_=;-]*+';
        preg_match_all("#<(($tagRegex) | /($tagRegex)?)>#ix", $message, $matches, PREG_OFFSET_CAPTURE);
        foreach ($matches[0] as $i => $match) {
            $pos = $match[1];
            $text = $match[0];

            if (0 != $pos && '\\' == $message[$pos - 1]) {
                continue;
            }

            // add the text up to the next tag
            $output .= $this->applyCurrentStyle(substr($message, $offset, $pos - $offset));
            $offset = $pos + \strlen($text);

            // opening tag?
            if ($open = '/' != $text[1]) {
                $tag = $matches[1][$i][0];
            } else {
                $tag = isset($matches[3][$i][0]) ? $matches[3][$i][0] : '';
            }

            if (!$open && !$tag) {
                // </>
                $this->styleStack->pop();
            } elseif (false === $style = $this->createStyleFromString($tag)) {
                $output .= $this->applyCurrentStyle($text);
            } elseif ($open) {
                $this->styleStack->push($style);
            } else {
                $this->styleStack->pop($style);
            }
        }

        $output .= $this->applyCurrentStyle(substr($message, $offset));

        if (false !== strpos($output, "\0")) {
            return strtr($output, ["\0" => '\\', '\\<' => '<']);
        }

        return str_replace('\\<', '<', $output);
    }

    /**
     * @return OutputFormatterStyleStack
     */
    public function getStyleStack()
    {
        return $this->styleStack;
    }

    /**
     * Tries to create new style instance from string.
     *
     * @param string $string
     *
     * @return OutputFormatterStyle|false false if string is not format string
     */
    private function createStyleFromString($string)
    {
        if (isset($this->styles[$string])) {
            return $this->styles[$string];
        }

        if (!preg_match_all('/([^=]+)=([^;]+)(;|$)/', $string, $matches, PREG_SET_ORDER)) {
            return false;
        }

        $style = new OutputFormatterStyle();
        foreach ($matches as $match) {
            array_shift($match);
            $match[0] = strtolower($match[0]);

            if ('fg' == $match[0]) {
                $style->setForeground(strtolower($match[1]));
            } elseif ('bg' == $match[0]) {
                $style->setBackground(strtolower($match[1]));
            } elseif ('options' === $match[0]) {
                preg_match_all('([^,;]+)', strtolower($match[1]), $options);
                $options = array_shift($options);
                foreach ($options as $option) {
                    try {
                        $style->setOption($option);
                    } catch (\InvalidArgumentException $e) {
                        @trigger_error(sprintf('Unknown style options are deprecated since Symfony 3.2 and will be removed in 4.0. Exception "%s".', $e->getMessage()), E_USER_DEPRECATED);

                        return false;
                    }
                }
            } else {
                return false;
            }
        }

        return $style;
    }

    /**
     * Applies current style from stack to text, if must be applied.
     *
     * @param string $text Input text
     *
     * @return string Styled text
     */
    private function applyCurrentStyle($text)
    {
        return $this->isDecorated() && \strlen($text) > 0 ? $this->styleStack->getCurrent()->apply($text) : $text;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Formatter;

use Symfony\Component\Console\Exception\InvalidArgumentException;

/**
 * @author Jean-FranÃ§ois Simon <contact@jfsimon.fr>
 */
class OutputFormatterStyleStack
{
    /**
     * @var OutputFormatterStyleInterface[]
     */
    private $styles;

    private $emptyStyle;

    public function __construct(OutputFormatterStyleInterface $emptyStyle = null)
    {
        $this->emptyStyle = $emptyStyle ?: new OutputFormatterStyle();
        $this->reset();
    }

    /**
     * Resets stack (ie. empty internal arrays).
     */
    public function reset()
    {
        $this->styles = [];
    }

    /**
     * Pushes a style in the stack.
     */
    public function push(OutputFormatterStyleInterface $style)
    {
        $this->styles[] = $style;
    }

    /**
     * Pops a style from the stack.
     *
     * @return OutputFormatterStyleInterface
     *
     * @throws InvalidArgumentException When style tags incorrectly nested
     */
    public function pop(OutputFormatterStyleInterface $style = null)
    {
        if (empty($this->styles)) {
            return $this->emptyStyle;
        }

        if (null === $style) {
            return array_pop($this->styles);
        }

        foreach (array_reverse($this->styles, true) as $index => $stackedStyle) {
            if ($style->apply('') === $stackedStyle->apply('')) {
                $this->styles = \array_slice($this->styles, 0, $index);

                return $stackedStyle;
            }
        }

        throw new InvalidArgumentException('Incorrectly nested style tag found.');
    }

    /**
     * Computes current style with stacks top codes.
     *
     * @return OutputFormatterStyle
     */
    public function getCurrent()
    {
        if (empty($this->styles)) {
            return $this->emptyStyle;
        }

        return $this->styles[\count($this->styles) - 1];
    }

    /**
     * @return $this
     */
    public function setEmptyStyle(OutputFormatterStyleInterface $emptyStyle)
    {
        $this->emptyStyle = $emptyStyle;

        return $this;
    }

    /**
     * @return OutputFormatterStyleInterface
     */
    public function getEmptyStyle()
    {
        return $this->emptyStyle;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\CommandLoader;

use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Exception\CommandNotFoundException;

/**
 * @author Robin Chalas <robin.chalas@gmail.com>
 */
interface CommandLoaderInterface
{
    /**
     * Loads a command.
     *
     * @param string $name
     *
     * @return Command
     *
     * @throws CommandNotFoundException
     */
    public function get($name);

    /**
     * Checks if a command exists.
     *
     * @param string $name
     *
     * @return bool
     */
    public function has($name);

    /**
     * @return string[] All registered command names
     */
    public function getNames();
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\CommandLoader;

use Psr\Container\ContainerInterface;
use Symfony\Component\Console\Exception\CommandNotFoundException;

/**
 * Loads commands from a PSR-11 container.
 *
 * @author Robin Chalas <robin.chalas@gmail.com>
 */
class ContainerCommandLoader implements CommandLoaderInterface
{
    private $container;
    private $commandMap;

    /**
     * @param ContainerInterface $container  A container from which to load command services
     * @param array              $commandMap An array with command names as keys and service ids as values
     */
    public function __construct(ContainerInterface $container, array $commandMap)
    {
        $this->container = $container;
        $this->commandMap = $commandMap;
    }

    /**
     * {@inheritdoc}
     */
    public function get($name)
    {
        if (!$this->has($name)) {
            throw new CommandNotFoundException(sprintf('Command "%s" does not exist.', $name));
        }

        return $this->container->get($this->commandMap[$name]);
    }

    /**
     * {@inheritdoc}
     */
    public function has($name)
    {
        return isset($this->commandMap[$name]) && $this->container->has($this->commandMap[$name]);
    }

    /**
     * {@inheritdoc}
     */
    public function getNames()
    {
        return array_keys($this->commandMap);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\CommandLoader;

use Symfony\Component\Console\Exception\CommandNotFoundException;

/**
 * A simple command loader using factories to instantiate commands lazily.
 *
 * @author Maxime Steinhausser <maxime.steinhausser@gmail.com>
 */
class FactoryCommandLoader implements CommandLoaderInterface
{
    private $factories;

    /**
     * @param callable[] $factories Indexed by command names
     */
    public function __construct(array $factories)
    {
        $this->factories = $factories;
    }

    /**
     * {@inheritdoc}
     */
    public function has($name)
    {
        return isset($this->factories[$name]);
    }

    /**
     * {@inheritdoc}
     */
    public function get($name)
    {
        if (!isset($this->factories[$name])) {
            throw new CommandNotFoundException(sprintf('Command "%s" does not exist.', $name));
        }

        $factory = $this->factories[$name];

        return $factory();
    }

    /**
     * {@inheritdoc}
     */
    public function getNames()
    {
        return array_keys($this->factories);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Descriptor;

use Symfony\Component\Console\Application;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Formatter\OutputFormatter;
use Symfony\Component\Console\Helper\Helper;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputDefinition;
use Symfony\Component\Console\Input\InputOption;

/**
 * Text descriptor.
 *
 * @author Jean-FranÃ§ois Simon <contact@jfsimon.fr>
 *
 * @internal
 */
class TextDescriptor extends Descriptor
{
    /**
     * {@inheritdoc}
     */
    protected function describeInputArgument(InputArgument $argument, array $options = [])
    {
        if (null !== $argument->getDefault() && (!\is_array($argument->getDefault()) || \count($argument->getDefault()))) {
            $default = sprintf('<comment> [default: %s]</comment>', $this->formatDefaultValue($argument->getDefault()));
        } else {
            $default = '';
        }

        $totalWidth = isset($options['total_width']) ? $options['total_width'] : Helper::strlen($argument->getName());
        $spacingWidth = $totalWidth - \strlen($argument->getName());

        $this->writeText(sprintf('  <info>%s</info>  %s%s%s',
            $argument->getName(),
            str_repeat(' ', $spacingWidth),
            // + 4 = 2 spaces before <info>, 2 spaces after </info>
            preg_replace('/\s*[\r\n]\s*/', "\n".str_repeat(' ', $totalWidth + 4), $argument->getDescription()),
            $default
        ), $options);
    }

    /**
     * {@inheritdoc}
     */
    protected function describeInputOption(InputOption $option, array $options = [])
    {
        if ($option->acceptValue() && null !== $option->getDefault() && (!\is_array($option->getDefault()) || \count($option->getDefault()))) {
            $default = sprintf('<comment> [default: %s]</comment>', $this->formatDefaultValue($option->getDefault()));
        } else {
            $default = '';
        }

        $value = '';
        if ($option->acceptValue()) {
            $value = '='.strtoupper($option->getName());

            if ($option->isValueOptional()) {
                $value = '['.$value.']';
            }
        }

        $totalWidth = isset($options['total_width']) ? $options['total_width'] : $this->calculateTotalWidthForOptions([$option]);
        $synopsis = sprintf('%s%s',
            $option->getShortcut() ? sprintf('-%s, ', $option->getShortcut()) : '    ',
            sprintf('--%s%s', $option->getName(), $value)
        );

        $spacingWidth = $totalWidth - Helper::strlen($synopsis);

        $this->writeText(sprintf('  <info>%s</info>  %s%s%s%s',
            $synopsis,
            str_repeat(' ', $spacingWidth),
            // + 4 = 2 spaces before <info>, 2 spaces after </info>
            preg_replace('/\s*[\r\n]\s*/', "\n".str_repeat(' ', $totalWidth + 4), $option->getDescription()),
            $default,
            $option->isArray() ? '<comment> (multiple values allowed)</comment>' : ''
        ), $options);
    }

    /**
     * {@inheritdoc}
     */
    protected function describeInputDefinition(InputDefinition $definition, array $options = [])
    {
        $totalWidth = $this->calculateTotalWidthForOptions($definition->getOptions());
        foreach ($definition->getArguments() as $argument) {
            $totalWidth = max($totalWidth, Helper::strlen($argument->getName()));
        }

        if ($definition->getArguments()) {
            $this->writeText('<comment>Arguments:</comment>', $options);
            $this->writeText("\n");
            foreach ($definition->getArguments() as $argument) {
                $this->describeInputArgument($argument, array_merge($options, ['total_width' => $totalWidth]));
                $this->writeText("\n");
            }
        }

        if ($definition->getArguments() && $definition->getOptions()) {
            $this->writeText("\n");
        }

        if ($definition->getOptions()) {
            $laterOptions = [];

            $this->writeText('<comment>Options:</comment>', $options);
            foreach ($definition->getOptions() as $option) {
                if (\strlen($option->getShortcut()) > 1) {
                    $laterOptions[] = $option;
                    continue;
                }
                $this->writeText("\n");
                $this->describeInputOption($option, array_merge($options, ['total_width' => $totalWidth]));
            }
            foreach ($laterOptions as $option) {
                $this->writeText("\n");
                $this->describeInputOption($option, array_merge($options, ['total_width' => $totalWidth]));
            }
        }
    }

    /**
     * {@inheritdoc}
     */
    protected function describeCommand(Command $command, array $options = [])
    {
        $command->getSynopsis(true);
        $command->getSynopsis(false);
        $command->mergeApplicationDefinition(false);

        $this->writeText('<comment>Usage:</comment>', $options);
        foreach (array_merge([$command->getSynopsis(true)], $command->getAliases(), $command->getUsages()) as $usage) {
            $this->writeText("\n");
            $this->writeText('  '.OutputFormatter::escape($usage), $options);
        }
        $this->writeText("\n");

        $definition = $command->getNativeDefinition();
        if ($definition->getOptions() || $definition->getArguments()) {
            $this->writeText("\n");
            $this->describeInputDefinition($definition, $options);
            $this->writeText("\n");
        }

        if ($help = $command->getProcessedHelp()) {
            $this->writeText("\n");
            $this->writeText('<comment>Help:</comment>', $options);
            $this->writeText("\n");
            $this->writeText('  '.str_replace("\n", "\n  ", $help), $options);
            $this->writeText("\n");
        }
    }

    /**
     * {@inheritdoc}
     */
    protected function describeApplication(Application $application, array $options = [])
    {
        $describedNamespace = isset($options['namespace']) ? $options['namespace'] : null;
        $description = new ApplicationDescription($application, $describedNamespace);

        if (isset($options['raw_text']) && $options['raw_text']) {
            $width = $this->getColumnWidth($description->getCommands());

            foreach ($description->getCommands() as $command) {
                $this->writeText(sprintf("%-{$width}s %s", $command->getName(), $command->getDescription()), $options);
                $this->writeText("\n");
            }
        } else {
            if ('' != $help = $application->getHelp()) {
                $this->writeText("$help\n\n", $options);
            }

            $this->writeText("<comment>Usage:</comment>\n", $options);
            $this->writeText("  command [options] [arguments]\n\n", $options);

            $this->describeInputDefinition(new InputDefinition($application->getDefinition()->getOptions()), $options);

            $this->writeText("\n");
            $this->writeText("\n");

            $commands = $description->getCommands();
            $namespaces = $description->getNamespaces();
            if ($describedNamespace && $namespaces) {
                // make sure all alias commands are included when describing a specific namespace
                $describedNamespaceInfo = reset($namespaces);
                foreach ($describedNamespaceInfo['commands'] as $name) {
                    $commands[$name] = $description->getCommand($name);
                }
            }

            // calculate max. width based on available commands per namespace
            $width = $this->getColumnWidth(\call_user_func_array('array_merge', array_map(function ($namespace) use ($commands) {
                return array_intersect($namespace['commands'], array_keys($commands));
            }, $namespaces)));

            if ($describedNamespace) {
                $this->writeText(sprintf('<comment>Available commands for the "%s" namespace:</comment>', $describedNamespace), $options);
            } else {
                $this->writeText('<comment>Available commands:</comment>', $options);
            }

            foreach ($namespaces as $namespace) {
                $namespace['commands'] = array_filter($namespace['commands'], function ($name) use ($commands) {
                    return isset($commands[$name]);
                });

                if (!$namespace['commands']) {
                    continue;
                }

                if (!$describedNamespace && ApplicationDescription::GLOBAL_NAMESPACE !== $namespace['id']) {
                    $this->writeText("\n");
                    $this->writeText(' <comment>'.$namespace['id'].'</comment>', $options);
                }

                foreach ($namespace['commands'] as $name) {
                    $this->writeText("\n");
                    $spacingWidth = $width - Helper::strlen($name);
                    $command = $commands[$name];
                    $commandAliases = $name === $command->getName() ? $this->getCommandAliasesText($command) : '';
                    $this->writeText(sprintf('  <info>%s</info>%s%s', $name, str_repeat(' ', $spacingWidth), $commandAliases.$command->getDescription()), $options);
                }
            }

            $this->writeText("\n");
        }
    }

    /**
     * {@inheritdoc}
     */
    private function writeText($content, array $options = [])
    {
        $this->write(
            isset($options['raw_text']) && $options['raw_text'] ? strip_tags($content) : $content,
            isset($options['raw_output']) ? !$options['raw_output'] : true
        );
    }

    /**
     * Formats command aliases to show them in the command description.
     *
     * @return string
     */
    private function getCommandAliasesText(Command $command)
    {
        $text = '';
        $aliases = $command->getAliases();

        if ($aliases) {
            $text = '['.implode('|', $aliases).'] ';
        }

        return $text;
    }

    /**
     * Formats input option/argument default value.
     *
     * @param mixed $default
     *
     * @return string
     */
    private function formatDefaultValue($default)
    {
        if (INF === $default) {
            return 'INF';
        }

        if (\is_string($default)) {
            $default = OutputFormatter::escape($default);
        } elseif (\is_array($default)) {
            foreach ($default as $key => $value) {
                if (\is_string($value)) {
                    $default[$key] = OutputFormatter::escape($value);
                }
            }
        }

        return str_replace('\\\\', '\\', json_encode($default, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE));
    }

    /**
     * @param (Command|string)[] $commands
     *
     * @return int
     */
    private function getColumnWidth(array $commands)
    {
        $widths = [];

        foreach ($commands as $command) {
            if ($command instanceof Command) {
                $widths[] = Helper::strlen($command->getName());
                foreach ($command->getAliases() as $alias) {
                    $widths[] = Helper::strlen($alias);
                }
            } else {
                $widths[] = Helper::strlen($command);
            }
        }

        return $widths ? max($widths) + 2 : 0;
    }

    /**
     * @param InputOption[] $options
     *
     * @return int
     */
    private function calculateTotalWidthForOptions(array $options)
    {
        $totalWidth = 0;
        foreach ($options as $option) {
            // "-" + shortcut + ", --" + name
            $nameLength = 1 + max(Helper::strlen($option->getShortcut()), 1) + 4 + Helper::strlen($option->getName());

            if ($option->acceptValue()) {
                $valueLength = 1 + Helper::strlen($option->getName()); // = + value
                $valueLength += $option->isValueOptional() ? 2 : 0; // [ + ]

                $nameLength += $valueLength;
            }
            $totalWidth = max($totalWidth, $nameLength);
        }

        return $totalWidth;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Descriptor;

use Symfony\Component\Console\Application;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Exception\CommandNotFoundException;

/**
 * @author Jean-FranÃ§ois Simon <jeanfrancois.simon@sensiolabs.com>
 *
 * @internal
 */
class ApplicationDescription
{
    const GLOBAL_NAMESPACE = '_global';

    private $application;
    private $namespace;
    private $showHidden;

    /**
     * @var array
     */
    private $namespaces;

    /**
     * @var Command[]
     */
    private $commands;

    /**
     * @var Command[]
     */
    private $aliases;

    /**
     * @param string|null $namespace
     * @param bool        $showHidden
     */
    public function __construct(Application $application, $namespace = null, $showHidden = false)
    {
        $this->application = $application;
        $this->namespace = $namespace;
        $this->showHidden = $showHidden;
    }

    /**
     * @return array
     */
    public function getNamespaces()
    {
        if (null === $this->namespaces) {
            $this->inspectApplication();
        }

        return $this->namespaces;
    }

    /**
     * @return Command[]
     */
    public function getCommands()
    {
        if (null === $this->commands) {
            $this->inspectApplication();
        }

        return $this->commands;
    }

    /**
     * @param string $name
     *
     * @return Command
     *
     * @throws CommandNotFoundException
     */
    public function getCommand($name)
    {
        if (!isset($this->commands[$name]) && !isset($this->aliases[$name])) {
            throw new CommandNotFoundException(sprintf('Command %s does not exist.', $name));
        }

        return isset($this->commands[$name]) ? $this->commands[$name] : $this->aliases[$name];
    }

    private function inspectApplication()
    {
        $this->commands = [];
        $this->namespaces = [];

        $all = $this->application->all($this->namespace ? $this->application->findNamespace($this->namespace) : null);
        foreach ($this->sortCommands($all) as $namespace => $commands) {
            $names = [];

            /** @var Command $command */
            foreach ($commands as $name => $command) {
                if (!$command->getName() || (!$this->showHidden && $command->isHidden())) {
                    continue;
                }

                if ($command->getName() === $name) {
                    $this->commands[$name] = $command;
                } else {
                    $this->aliases[$name] = $command;
                }

                $names[] = $name;
            }

            $this->namespaces[$namespace] = ['id' => $namespace, 'commands' => $names];
        }
    }

    /**
     * @return array
     */
    private function sortCommands(array $commands)
    {
        $namespacedCommands = [];
        $globalCommands = [];
        foreach ($commands as $name => $command) {
            $key = $this->application->extractNamespace($name, 1);
            if (!$key) {
                $globalCommands['_global'][$name] = $command;
            } else {
                $namespacedCommands[$key][$name] = $command;
            }
        }
        ksort($namespacedCommands);
        $namespacedCommands = array_merge($globalCommands, $namespacedCommands);

        foreach ($namespacedCommands as &$commandsSet) {
            ksort($commandsSet);
        }
        // unset reference to keep scope clear
        unset($commandsSet);

        return $namespacedCommands;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Descriptor;

use Symfony\Component\Console\Application;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputDefinition;
use Symfony\Component\Console\Input\InputOption;

/**
 * XML descriptor.
 *
 * @author Jean-FranÃ§ois Simon <contact@jfsimon.fr>
 *
 * @internal
 */
class XmlDescriptor extends Descriptor
{
    /**
     * @return \DOMDocument
     */
    public function getInputDefinitionDocument(InputDefinition $definition)
    {
        $dom = new \DOMDocument('1.0', 'UTF-8');
        $dom->appendChild($definitionXML = $dom->createElement('definition'));

        $definitionXML->appendChild($argumentsXML = $dom->createElement('arguments'));
        foreach ($definition->getArguments() as $argument) {
            $this->appendDocument($argumentsXML, $this->getInputArgumentDocument($argument));
        }

        $definitionXML->appendChild($optionsXML = $dom->createElement('options'));
        foreach ($definition->getOptions() as $option) {
            $this->appendDocument($optionsXML, $this->getInputOptionDocument($option));
        }

        return $dom;
    }

    /**
     * @return \DOMDocument
     */
    public function getCommandDocument(Command $command)
    {
        $dom = new \DOMDocument('1.0', 'UTF-8');
        $dom->appendChild($commandXML = $dom->createElement('command'));

        $command->getSynopsis();
        $command->mergeApplicationDefinition(false);

        $commandXML->setAttribute('id', $command->getName());
        $commandXML->setAttribute('name', $command->getName());
        $commandXML->setAttribute('hidden', $command->isHidden() ? 1 : 0);

        $commandXML->appendChild($usagesXML = $dom->createElement('usages'));

        foreach (array_merge([$command->getSynopsis()], $command->getAliases(), $command->getUsages()) as $usage) {
            $usagesXML->appendChild($dom->createElement('usage', $usage));
        }

        $commandXML->appendChild($descriptionXML = $dom->createElement('description'));
        $descriptionXML->appendChild($dom->createTextNode(str_replace("\n", "\n ", $command->getDescription())));

        $commandXML->appendChild($helpXML = $dom->createElement('help'));
        $helpXML->appendChild($dom->createTextNode(str_replace("\n", "\n ", $command->getProcessedHelp())));

        $definitionXML = $this->getInputDefinitionDocument($command->getNativeDefinition());
        $this->appendDocument($commandXML, $definitionXML->getElementsByTagName('definition')->item(0));

        return $dom;
    }

    /**
     * @param string|null $namespace
     *
     * @return \DOMDocument
     */
    public function getApplicationDocument(Application $application, $namespace = null)
    {
        $dom = new \DOMDocument('1.0', 'UTF-8');
        $dom->appendChild($rootXml = $dom->createElement('symfony'));

        if ('UNKNOWN' !== $application->getName()) {
            $rootXml->setAttribute('name', $application->getName());
            if ('UNKNOWN' !== $application->getVersion()) {
                $rootXml->setAttribute('version', $application->getVersion());
            }
        }

        $rootXml->appendChild($commandsXML = $dom->createElement('commands'));

        $description = new ApplicationDescription($application, $namespace, true);

        if ($namespace) {
            $commandsXML->setAttribute('namespace', $namespace);
        }

        foreach ($description->getCommands() as $command) {
            $this->appendDocument($commandsXML, $this->getCommandDocument($command));
        }

        if (!$namespace) {
            $rootXml->appendChild($namespacesXML = $dom->createElement('namespaces'));

            foreach ($description->getNamespaces() as $namespaceDescription) {
                $namespacesXML->appendChild($namespaceArrayXML = $dom->createElement('namespace'));
                $namespaceArrayXML->setAttribute('id', $namespaceDescription['id']);

                foreach ($namespaceDescription['commands'] as $name) {
                    $namespaceArrayXML->appendChild($commandXML = $dom->createElement('command'));
                    $commandXML->appendChild($dom->createTextNode($name));
                }
            }
        }

        return $dom;
    }

    /**
     * {@inheritdoc}
     */
    protected function describeInputArgument(InputArgument $argument, array $options = [])
    {
        $this->writeDocument($this->getInputArgumentDocument($argument));
    }

    /**
     * {@inheritdoc}
     */
    protected function describeInputOption(InputOption $option, array $options = [])
    {
        $this->writeDocument($this->getInputOptionDocument($option));
    }

    /**
     * {@inheritdoc}
     */
    protected function describeInputDefinition(InputDefinition $definition, array $options = [])
    {
        $this->writeDocument($this->getInputDefinitionDocument($definition));
    }

    /**
     * {@inheritdoc}
     */
    protected function describeCommand(Command $command, array $options = [])
    {
        $this->writeDocument($this->getCommandDocument($command));
    }

    /**
     * {@inheritdoc}
     */
    protected function describeApplication(Application $application, array $options = [])
    {
        $this->writeDocument($this->getApplicationDocument($application, isset($options['namespace']) ? $options['namespace'] : null));
    }

    /**
     * Appends document children to parent node.
     */
    private function appendDocument(\DOMNode $parentNode, \DOMNode $importedParent)
    {
        foreach ($importedParent->childNodes as $childNode) {
            $parentNode->appendChild($parentNode->ownerDocument->importNode($childNode, true));
        }
    }

    /**
     * Writes DOM document.
     */
    private function writeDocument(\DOMDocument $dom)
    {
        $dom->formatOutput = true;
        $this->write($dom->saveXML());
    }

    /**
     * @return \DOMDocument
     */
    private function getInputArgumentDocument(InputArgument $argument)
    {
        $dom = new \DOMDocument('1.0', 'UTF-8');

        $dom->appendChild($objectXML = $dom->createElement('argument'));
        $objectXML->setAttribute('name', $argument->getName());
        $objectXML->setAttribute('is_required', $argument->isRequired() ? 1 : 0);
        $objectXML->setAttribute('is_array', $argument->isArray() ? 1 : 0);
        $objectXML->appendChild($descriptionXML = $dom->createElement('description'));
        $descriptionXML->appendChild($dom->createTextNode($argument->getDescription()));

        $objectXML->appendChild($defaultsXML = $dom->createElement('defaults'));
        $defaults = \is_array($argument->getDefault()) ? $argument->getDefault() : (\is_bool($argument->getDefault()) ? [var_export($argument->getDefault(), true)] : ($argument->getDefault() ? [$argument->getDefault()] : []));
        foreach ($defaults as $default) {
            $defaultsXML->appendChild($defaultXML = $dom->createElement('default'));
            $defaultXML->appendChild($dom->createTextNode($default));
        }

        return $dom;
    }

    /**
     * @return \DOMDocument
     */
    private function getInputOptionDocument(InputOption $option)
    {
        $dom = new \DOMDocument('1.0', 'UTF-8');

        $dom->appendChild($objectXML = $dom->createElement('option'));
        $objectXML->setAttribute('name', '--'.$option->getName());
        $pos = strpos($option->getShortcut(), '|');
        if (false !== $pos) {
            $objectXML->setAttribute('shortcut', '-'.substr($option->getShortcut(), 0, $pos));
            $objectXML->setAttribute('shortcuts', '-'.str_replace('|', '|-', $option->getShortcut()));
        } else {
            $objectXML->setAttribute('shortcut', $option->getShortcut() ? '-'.$option->getShortcut() : '');
        }
        $objectXML->setAttribute('accept_value', $option->acceptValue() ? 1 : 0);
        $objectXML->setAttribute('is_value_required', $option->isValueRequired() ? 1 : 0);
        $objectXML->setAttribute('is_multiple', $option->isArray() ? 1 : 0);
        $objectXML->appendChild($descriptionXML = $dom->createElement('description'));
        $descriptionXML->appendChild($dom->createTextNode($option->getDescription()));

        if ($option->acceptValue()) {
            $defaults = \is_array($option->getDefault()) ? $option->getDefault() : (\is_bool($option->getDefault()) ? [var_export($option->getDefault(), true)] : ($option->getDefault() ? [$option->getDefault()] : []));
            $objectXML->appendChild($defaultsXML = $dom->createElement('defaults'));

            if (!empty($defaults)) {
                foreach ($defaults as $default) {
                    $defaultsXML->appendChild($defaultXML = $dom->createElement('default'));
                    $defaultXML->appendChild($dom->createTextNode($default));
                }
            }
        }

        return $dom;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Descriptor;

use Symfony\Component\Console\Output\OutputInterface;

/**
 * Descriptor interface.
 *
 * @author Jean-FranÃ§ois Simon <contact@jfsimon.fr>
 */
interface DescriptorInterface
{
    /**
     * Describes an object if supported.
     *
     * @param object $object
     */
    public function describe(OutputInterface $output, $object, array $options = []);
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Descriptor;

use Symfony\Component\Console\Application;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Exception\InvalidArgumentException;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputDefinition;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * @author Jean-FranÃ§ois Simon <jeanfrancois.simon@sensiolabs.com>
 *
 * @internal
 */
abstract class Descriptor implements DescriptorInterface
{
    /**
     * @var OutputInterface
     */
    protected $output;

    /**
     * {@inheritdoc}
     */
    public function describe(OutputInterface $output, $object, array $options = [])
    {
        $this->output = $output;

        switch (true) {
            case $object instanceof InputArgument:
                $this->describeInputArgument($object, $options);
                break;
            case $object instanceof InputOption:
                $this->describeInputOption($object, $options);
                break;
            case $object instanceof InputDefinition:
                $this->describeInputDefinition($object, $options);
                break;
            case $object instanceof Command:
                $this->describeCommand($object, $options);
                break;
            case $object instanceof Application:
                $this->describeApplication($object, $options);
                break;
            default:
                throw new InvalidArgumentException(sprintf('Object of type "%s" is not describable.', \get_class($object)));
        }
    }

    /**
     * Writes content to output.
     *
     * @param string $content
     * @param bool   $decorated
     */
    protected function write($content, $decorated = false)
    {
        $this->output->write($content, false, $decorated ? OutputInterface::OUTPUT_NORMAL : OutputInterface::OUTPUT_RAW);
    }

    /**
     * Describes an InputArgument instance.
     *
     * @return string|mixed
     */
    abstract protected function describeInputArgument(InputArgument $argument, array $options = []);

    /**
     * Describes an InputOption instance.
     *
     * @return string|mixed
     */
    abstract protected function describeInputOption(InputOption $option, array $options = []);

    /**
     * Describes an InputDefinition instance.
     *
     * @return string|mixed
     */
    abstract protected function describeInputDefinition(InputDefinition $definition, array $options = []);

    /**
     * Describes a Command instance.
     *
     * @return string|mixed
     */
    abstract protected function describeCommand(Command $command, array $options = []);

    /**
     * Describes an Application instance.
     *
     * @return string|mixed
     */
    abstract protected function describeApplication(Application $application, array $options = []);
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Descriptor;

use Symfony\Component\Console\Application;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputDefinition;
use Symfony\Component\Console\Input\InputOption;

/**
 * JSON descriptor.
 *
 * @author Jean-FranÃ§ois Simon <contact@jfsimon.fr>
 *
 * @internal
 */
class JsonDescriptor extends Descriptor
{
    /**
     * {@inheritdoc}
     */
    protected function describeInputArgument(InputArgument $argument, array $options = [])
    {
        $this->writeData($this->getInputArgumentData($argument), $options);
    }

    /**
     * {@inheritdoc}
     */
    protected function describeInputOption(InputOption $option, array $options = [])
    {
        $this->writeData($this->getInputOptionData($option), $options);
    }

    /**
     * {@inheritdoc}
     */
    protected function describeInputDefinition(InputDefinition $definition, array $options = [])
    {
        $this->writeData($this->getInputDefinitionData($definition), $options);
    }

    /**
     * {@inheritdoc}
     */
    protected function describeCommand(Command $command, array $options = [])
    {
        $this->writeData($this->getCommandData($command), $options);
    }

    /**
     * {@inheritdoc}
     */
    protected function describeApplication(Application $application, array $options = [])
    {
        $describedNamespace = isset($options['namespace']) ? $options['namespace'] : null;
        $description = new ApplicationDescription($application, $describedNamespace, true);
        $commands = [];

        foreach ($description->getCommands() as $command) {
            $commands[] = $this->getCommandData($command);
        }

        $data = [];
        if ('UNKNOWN' !== $application->getName()) {
            $data['application']['name'] = $application->getName();
            if ('UNKNOWN' !== $application->getVersion()) {
                $data['application']['version'] = $application->getVersion();
            }
        }

        $data['commands'] = $commands;

        if ($describedNamespace) {
            $data['namespace'] = $describedNamespace;
        } else {
            $data['namespaces'] = array_values($description->getNamespaces());
        }

        $this->writeData($data, $options);
    }

    /**
     * Writes data as json.
     */
    private function writeData(array $data, array $options)
    {
        $flags = isset($options['json_encoding']) ? $options['json_encoding'] : 0;

        $this->write(json_encode($data, $flags));
    }

    /**
     * @return array
     */
    private function getInputArgumentData(InputArgument $argument)
    {
        return [
            'name' => $argument->getName(),
            'is_required' => $argument->isRequired(),
            'is_array' => $argument->isArray(),
            'description' => preg_replace('/\s*[\r\n]\s*/', ' ', $argument->getDescription()),
            'default' => INF === $argument->getDefault() ? 'INF' : $argument->getDefault(),
        ];
    }

    /**
     * @return array
     */
    private function getInputOptionData(InputOption $option)
    {
        return [
            'name' => '--'.$option->getName(),
            'shortcut' => $option->getShortcut() ? '-'.str_replace('|', '|-', $option->getShortcut()) : '',
            'accept_value' => $option->acceptValue(),
            'is_value_required' => $option->isValueRequired(),
            'is_multiple' => $option->isArray(),
            'description' => preg_replace('/\s*[\r\n]\s*/', ' ', $option->getDescription()),
            'default' => INF === $option->getDefault() ? 'INF' : $option->getDefault(),
        ];
    }

    /**
     * @return array
     */
    private function getInputDefinitionData(InputDefinition $definition)
    {
        $inputArguments = [];
        foreach ($definition->getArguments() as $name => $argument) {
            $inputArguments[$name] = $this->getInputArgumentData($argument);
        }

        $inputOptions = [];
        foreach ($definition->getOptions() as $name => $option) {
            $inputOptions[$name] = $this->getInputOptionData($option);
        }

        return ['arguments' => $inputArguments, 'options' => $inputOptions];
    }

    /**
     * @return array
     */
    private function getCommandData(Command $command)
    {
        $command->getSynopsis();
        $command->mergeApplicationDefinition(false);

        return [
            'name' => $command->getName(),
            'usage' => array_merge([$command->getSynopsis()], $command->getUsages(), $command->getAliases()),
            'description' => $command->getDescription(),
            'help' => $command->getProcessedHelp(),
            'definition' => $this->getInputDefinitionData($command->getNativeDefinition()),
            'hidden' => $command->isHidden(),
        ];
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Descriptor;

use Symfony\Component\Console\Application;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Helper\Helper;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputDefinition;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * Markdown descriptor.
 *
 * @author Jean-FranÃ§ois Simon <contact@jfsimon.fr>
 *
 * @internal
 */
class MarkdownDescriptor extends Descriptor
{
    /**
     * {@inheritdoc}
     */
    public function describe(OutputInterface $output, $object, array $options = [])
    {
        $decorated = $output->isDecorated();
        $output->setDecorated(false);

        parent::describe($output, $object, $options);

        $output->setDecorated($decorated);
    }

    /**
     * {@inheritdoc}
     */
    protected function write($content, $decorated = true)
    {
        parent::write($content, $decorated);
    }

    /**
     * {@inheritdoc}
     */
    protected function describeInputArgument(InputArgument $argument, array $options = [])
    {
        $this->write(
            '#### `'.($argument->getName() ?: '<none>')."`\n\n"
            .($argument->getDescription() ? preg_replace('/\s*[\r\n]\s*/', "\n", $argument->getDescription())."\n\n" : '')
            .'* Is required: '.($argument->isRequired() ? 'yes' : 'no')."\n"
            .'* Is array: '.($argument->isArray() ? 'yes' : 'no')."\n"
            .'* Default: `'.str_replace("\n", '', var_export($argument->getDefault(), true)).'`'
        );
    }

    /**
     * {@inheritdoc}
     */
    protected function describeInputOption(InputOption $option, array $options = [])
    {
        $name = '--'.$option->getName();
        if ($option->getShortcut()) {
            $name .= '|-'.str_replace('|', '|-', $option->getShortcut()).'';
        }

        $this->write(
            '#### `'.$name.'`'."\n\n"
            .($option->getDescription() ? preg_replace('/\s*[\r\n]\s*/', "\n", $option->getDescription())."\n\n" : '')
            .'* Accept value: '.($option->acceptValue() ? 'yes' : 'no')."\n"
            .'* Is value required: '.($option->isValueRequired() ? 'yes' : 'no')."\n"
            .'* Is multiple: '.($option->isArray() ? 'yes' : 'no')."\n"
            .'* Default: `'.str_replace("\n", '', var_export($option->getDefault(), true)).'`'
        );
    }

    /**
     * {@inheritdoc}
     */
    protected function describeInputDefinition(InputDefinition $definition, array $options = [])
    {
        if ($showArguments = \count($definition->getArguments()) > 0) {
            $this->write('### Arguments');
            foreach ($definition->getArguments() as $argument) {
                $this->write("\n\n");
                $this->write($this->describeInputArgument($argument));
            }
        }

        if (\count($definition->getOptions()) > 0) {
            if ($showArguments) {
                $this->write("\n\n");
            }

            $this->write('### Options');
            foreach ($definition->getOptions() as $option) {
                $this->write("\n\n");
                $this->write($this->describeInputOption($option));
            }
        }
    }

    /**
     * {@inheritdoc}
     */
    protected function describeCommand(Command $command, array $options = [])
    {
        $command->getSynopsis();
        $command->mergeApplicationDefinition(false);

        $this->write(
            '`'.$command->getName()."`\n"
            .str_repeat('-', Helper::strlen($command->getName()) + 2)."\n\n"
            .($command->getDescription() ? $command->getDescription()."\n\n" : '')
            .'### Usage'."\n\n"
            .array_reduce(array_merge([$command->getSynopsis()], $command->getAliases(), $command->getUsages()), function ($carry, $usage) {
                return $carry.'* `'.$usage.'`'."\n";
            })
        );

        if ($help = $command->getProcessedHelp()) {
            $this->write("\n");
            $this->write($help);
        }

        if ($command->getNativeDefinition()) {
            $this->write("\n\n");
            $this->describeInputDefinition($command->getNativeDefinition());
        }
    }

    /**
     * {@inheritdoc}
     */
    protected function describeApplication(Application $application, array $options = [])
    {
        $describedNamespace = isset($options['namespace']) ? $options['namespace'] : null;
        $description = new ApplicationDescription($application, $describedNamespace);
        $title = $this->getApplicationTitle($application);

        $this->write($title."\n".str_repeat('=', Helper::strlen($title)));

        foreach ($description->getNamespaces() as $namespace) {
            if (ApplicationDescription::GLOBAL_NAMESPACE !== $namespace['id']) {
                $this->write("\n\n");
                $this->write('**'.$namespace['id'].':**');
            }

            $this->write("\n\n");
            $this->write(implode("\n", array_map(function ($commandName) use ($description) {
                return sprintf('* [`%s`](#%s)', $commandName, str_replace(':', '', $description->getCommand($commandName)->getName()));
            }, $namespace['commands'])));
        }

        foreach ($description->getCommands() as $command) {
            $this->write("\n\n");
            $this->write($this->describeCommand($command));
        }
    }

    private function getApplicationTitle(Application $application)
    {
        if ('UNKNOWN' !== $application->getName()) {
            if ('UNKNOWN' !== $application->getVersion()) {
                return sprintf('%s %s', $application->getName(), $application->getVersion());
            }

            return $application->getName();
        }

        return 'Console Tool';
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Tester;

use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\ArrayInput;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Output\StreamOutput;

/**
 * Eases the testing of console commands.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Robin Chalas <robin.chalas@gmail.com>
 */
class CommandTester
{
    private $command;
    private $input;
    private $output;
    private $inputs = [];
    private $statusCode;

    public function __construct(Command $command)
    {
        $this->command = $command;
    }

    /**
     * Executes the command.
     *
     * Available execution options:
     *
     *  * interactive: Sets the input interactive flag
     *  * decorated:   Sets the output decorated flag
     *  * verbosity:   Sets the output verbosity flag
     *
     * @param array $input   An array of command arguments and options
     * @param array $options An array of execution options
     *
     * @return int The command exit code
     */
    public function execute(array $input, array $options = [])
    {
        // set the command name automatically if the application requires
        // this argument and no command name was passed
        if (!isset($input['command'])
            && (null !== $application = $this->command->getApplication())
            && $application->getDefinition()->hasArgument('command')
        ) {
            $input = array_merge(['command' => $this->command->getName()], $input);
        }

        $this->input = new ArrayInput($input);
        // Use an in-memory input stream even if no inputs are set so that QuestionHelper::ask() does not rely on the blocking STDIN.
        $this->input->setStream(self::createStream($this->inputs));

        if (isset($options['interactive'])) {
            $this->input->setInteractive($options['interactive']);
        }

        $this->output = new StreamOutput(fopen('php://memory', 'w', false));
        $this->output->setDecorated(isset($options['decorated']) ? $options['decorated'] : false);
        if (isset($options['verbosity'])) {
            $this->output->setVerbosity($options['verbosity']);
        }

        return $this->statusCode = $this->command->run($this->input, $this->output);
    }

    /**
     * Gets the display returned by the last execution of the command.
     *
     * @param bool $normalize Whether to normalize end of lines to \n or not
     *
     * @return string The display
     */
    public function getDisplay($normalize = false)
    {
        if (null === $this->output) {
            throw new \RuntimeException('Output not initialized, did you execute the command before requesting the display?');
        }

        rewind($this->output->getStream());

        $display = stream_get_contents($this->output->getStream());

        if ($normalize) {
            $display = str_replace(PHP_EOL, "\n", $display);
        }

        return $display;
    }

    /**
     * Gets the input instance used by the last execution of the command.
     *
     * @return InputInterface The current input instance
     */
    public function getInput()
    {
        return $this->input;
    }

    /**
     * Gets the output instance used by the last execution of the command.
     *
     * @return OutputInterface The current output instance
     */
    public function getOutput()
    {
        return $this->output;
    }

    /**
     * Gets the status code returned by the last execution of the application.
     *
     * @return int The status code
     */
    public function getStatusCode()
    {
        return $this->statusCode;
    }

    /**
     * Sets the user inputs.
     *
     * @param array $inputs An array of strings representing each input
     *                      passed to the command input stream
     *
     * @return CommandTester
     */
    public function setInputs(array $inputs)
    {
        $this->inputs = $inputs;

        return $this;
    }

    private static function createStream(array $inputs)
    {
        $stream = fopen('php://memory', 'r+', false);

        foreach ($inputs as $input) {
            fwrite($stream, $input.PHP_EOL);
        }

        rewind($stream);

        return $stream;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Tester;

use Symfony\Component\Console\Application;
use Symfony\Component\Console\Input\ArrayInput;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\ConsoleOutput;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Output\StreamOutput;

/**
 * Eases the testing of console applications.
 *
 * When testing an application, don't forget to disable the auto exit flag:
 *
 *     $application = new Application();
 *     $application->setAutoExit(false);
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ApplicationTester
{
    private $application;
    private $input;
    private $statusCode;
    /**
     * @var OutputInterface
     */
    private $output;
    private $captureStreamsIndependently = false;

    public function __construct(Application $application)
    {
        $this->application = $application;
    }

    /**
     * Executes the application.
     *
     * Available options:
     *
     *  * interactive:               Sets the input interactive flag
     *  * decorated:                 Sets the output decorated flag
     *  * verbosity:                 Sets the output verbosity flag
     *  * capture_stderr_separately: Make output of stdOut and stdErr separately available
     *
     * @param array $input   An array of arguments and options
     * @param array $options An array of options
     *
     * @return int The command exit code
     */
    public function run(array $input, $options = [])
    {
        $this->input = new ArrayInput($input);
        if (isset($options['interactive'])) {
            $this->input->setInteractive($options['interactive']);
        }

        $this->captureStreamsIndependently = \array_key_exists('capture_stderr_separately', $options) && $options['capture_stderr_separately'];
        if (!$this->captureStreamsIndependently) {
            $this->output = new StreamOutput(fopen('php://memory', 'w', false));
            if (isset($options['decorated'])) {
                $this->output->setDecorated($options['decorated']);
            }
            if (isset($options['verbosity'])) {
                $this->output->setVerbosity($options['verbosity']);
            }
        } else {
            $this->output = new ConsoleOutput(
                isset($options['verbosity']) ? $options['verbosity'] : ConsoleOutput::VERBOSITY_NORMAL,
                isset($options['decorated']) ? $options['decorated'] : null
            );

            $errorOutput = new StreamOutput(fopen('php://memory', 'w', false));
            $errorOutput->setFormatter($this->output->getFormatter());
            $errorOutput->setVerbosity($this->output->getVerbosity());
            $errorOutput->setDecorated($this->output->isDecorated());

            $reflectedOutput = new \ReflectionObject($this->output);
            $strErrProperty = $reflectedOutput->getProperty('stderr');
            $strErrProperty->setAccessible(true);
            $strErrProperty->setValue($this->output, $errorOutput);

            $reflectedParent = $reflectedOutput->getParentClass();
            $streamProperty = $reflectedParent->getProperty('stream');
            $streamProperty->setAccessible(true);
            $streamProperty->setValue($this->output, fopen('php://memory', 'w', false));
        }

        return $this->statusCode = $this->application->run($this->input, $this->output);
    }

    /**
     * Gets the display returned by the last execution of the application.
     *
     * @param bool $normalize Whether to normalize end of lines to \n or not
     *
     * @return string The display
     */
    public function getDisplay($normalize = false)
    {
        rewind($this->output->getStream());

        $display = stream_get_contents($this->output->getStream());

        if ($normalize) {
            $display = str_replace(PHP_EOL, "\n", $display);
        }

        return $display;
    }

    /**
     * Gets the output written to STDERR by the application.
     *
     * @param bool $normalize Whether to normalize end of lines to \n or not
     *
     * @return string
     */
    public function getErrorOutput($normalize = false)
    {
        if (!$this->captureStreamsIndependently) {
            throw new \LogicException('The error output is not available when the tester is run without "capture_stderr_separately" option set.');
        }

        rewind($this->output->getErrorOutput()->getStream());

        $display = stream_get_contents($this->output->getErrorOutput()->getStream());

        if ($normalize) {
            $display = str_replace(PHP_EOL, "\n", $display);
        }

        return $display;
    }

    /**
     * Gets the input instance used by the last execution of the application.
     *
     * @return InputInterface The current input instance
     */
    public function getInput()
    {
        return $this->input;
    }

    /**
     * Gets the output instance used by the last execution of the application.
     *
     * @return OutputInterface The current output instance
     */
    public function getOutput()
    {
        return $this->output;
    }

    /**
     * Gets the status code returned by the last execution of the application.
     *
     * @return int The status code
     */
    public function getStatusCode()
    {
        return $this->statusCode;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Command;

use Symfony\Component\Console\Exception\LogicException;
use Symfony\Component\Console\Exception\RuntimeException;
use Symfony\Component\Lock\Factory;
use Symfony\Component\Lock\Lock;
use Symfony\Component\Lock\Store\FlockStore;
use Symfony\Component\Lock\Store\SemaphoreStore;

/**
 * Basic lock feature for commands.
 *
 * @author Geoffrey Brier <geoffrey.brier@gmail.com>
 */
trait LockableTrait
{
    /** @var Lock */
    private $lock;

    /**
     * Locks a command.
     *
     * @return bool
     */
    private function lock($name = null, $blocking = false)
    {
        if (!class_exists(SemaphoreStore::class)) {
            throw new RuntimeException('To enable the locking feature you must install the symfony/lock component.');
        }

        if (null !== $this->lock) {
            throw new LogicException('A lock is already in place.');
        }

        if (SemaphoreStore::isSupported($blocking)) {
            $store = new SemaphoreStore();
        } else {
            $store = new FlockStore();
        }

        $this->lock = (new Factory($store))->createLock($name ?: $this->getName());
        if (!$this->lock->acquire($blocking)) {
            $this->lock = null;

            return false;
        }

        return true;
    }

    /**
     * Releases the command lock if there is one.
     */
    private function release()
    {
        if ($this->lock) {
            $this->lock->release();
            $this->lock = null;
        }
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Command;

use Symfony\Component\Console\Helper\DescriptorHelper;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * HelpCommand displays the help for a given command.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class HelpCommand extends Command
{
    private $command;

    /**
     * {@inheritdoc}
     */
    protected function configure()
    {
        $this->ignoreValidationErrors();

        $this
            ->setName('help')
            ->setDefinition([
                new InputArgument('command_name', InputArgument::OPTIONAL, 'The command name', 'help'),
                new InputOption('format', null, InputOption::VALUE_REQUIRED, 'The output format (txt, xml, json, or md)', 'txt'),
                new InputOption('raw', null, InputOption::VALUE_NONE, 'To output raw command help'),
            ])
            ->setDescription('Displays help for a command')
            ->setHelp(<<<'EOF'
The <info>%command.name%</info> command displays help for a given command:

  <info>php %command.full_name% list</info>

You can also output the help in other formats by using the <comment>--format</comment> option:

  <info>php %command.full_name% --format=xml list</info>

To display the list of available commands, please use the <info>list</info> command.
EOF
            )
        ;
    }

    public function setCommand(Command $command)
    {
        $this->command = $command;
    }

    /**
     * {@inheritdoc}
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        if (null === $this->command) {
            $this->command = $this->getApplication()->find($input->getArgument('command_name'));
        }

        $helper = new DescriptorHelper();
        $helper->describe($output, $this->command, [
            'format' => $input->getOption('format'),
            'raw_text' => $input->getOption('raw'),
        ]);

        $this->command = null;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Command;

use Symfony\Component\Console\Helper\DescriptorHelper;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputDefinition;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * ListCommand displays the list of all available commands for the application.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ListCommand extends Command
{
    /**
     * {@inheritdoc}
     */
    protected function configure()
    {
        $this
            ->setName('list')
            ->setDefinition($this->createDefinition())
            ->setDescription('Lists commands')
            ->setHelp(<<<'EOF'
The <info>%command.name%</info> command lists all commands:

  <info>php %command.full_name%</info>

You can also display the commands for a specific namespace:

  <info>php %command.full_name% test</info>

You can also output the information in other formats by using the <comment>--format</comment> option:

  <info>php %command.full_name% --format=xml</info>

It's also possible to get raw list of commands (useful for embedding command runner):

  <info>php %command.full_name% --raw</info>
EOF
            )
        ;
    }

    /**
     * {@inheritdoc}
     */
    public function getNativeDefinition()
    {
        return $this->createDefinition();
    }

    /**
     * {@inheritdoc}
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $helper = new DescriptorHelper();
        $helper->describe($output, $this->getApplication(), [
            'format' => $input->getOption('format'),
            'raw_text' => $input->getOption('raw'),
            'namespace' => $input->getArgument('namespace'),
        ]);
    }

    /**
     * {@inheritdoc}
     */
    private function createDefinition()
    {
        return new InputDefinition([
            new InputArgument('namespace', InputArgument::OPTIONAL, 'The namespace name'),
            new InputOption('raw', null, InputOption::VALUE_NONE, 'To output raw command list'),
            new InputOption('format', null, InputOption::VALUE_REQUIRED, 'The output format (txt, xml, json, or md)', 'txt'),
        ]);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Command;

use Symfony\Component\Console\Application;
use Symfony\Component\Console\Exception\ExceptionInterface;
use Symfony\Component\Console\Exception\InvalidArgumentException;
use Symfony\Component\Console\Exception\LogicException;
use Symfony\Component\Console\Helper\HelperSet;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputDefinition;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * Base class for all commands.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class Command
{
    /**
     * @var string|null The default command name
     */
    protected static $defaultName;

    private $application;
    private $name;
    private $processTitle;
    private $aliases = [];
    private $definition;
    private $hidden = false;
    private $help = '';
    private $description = '';
    private $ignoreValidationErrors = false;
    private $applicationDefinitionMerged = false;
    private $applicationDefinitionMergedWithArgs = false;
    private $code;
    private $synopsis = [];
    private $usages = [];
    private $helperSet;

    /**
     * @return string|null The default command name or null when no default name is set
     */
    public static function getDefaultName()
    {
        $class = \get_called_class();
        $r = new \ReflectionProperty($class, 'defaultName');

        return $class === $r->class ? static::$defaultName : null;
    }

    /**
     * @param string|null $name The name of the command; passing null means it must be set in configure()
     *
     * @throws LogicException When the command name is empty
     */
    public function __construct($name = null)
    {
        $this->definition = new InputDefinition();

        if (null !== $name || null !== $name = static::getDefaultName()) {
            $this->setName($name);
        }

        $this->configure();
    }

    /**
     * Ignores validation errors.
     *
     * This is mainly useful for the help command.
     */
    public function ignoreValidationErrors()
    {
        $this->ignoreValidationErrors = true;
    }

    public function setApplication(Application $application = null)
    {
        $this->application = $application;
        if ($application) {
            $this->setHelperSet($application->getHelperSet());
        } else {
            $this->helperSet = null;
        }
    }

    public function setHelperSet(HelperSet $helperSet)
    {
        $this->helperSet = $helperSet;
    }

    /**
     * Gets the helper set.
     *
     * @return HelperSet|null A HelperSet instance
     */
    public function getHelperSet()
    {
        return $this->helperSet;
    }

    /**
     * Gets the application instance for this command.
     *
     * @return Application|null An Application instance
     */
    public function getApplication()
    {
        return $this->application;
    }

    /**
     * Checks whether the command is enabled or not in the current environment.
     *
     * Override this to check for x or y and return false if the command can not
     * run properly under the current conditions.
     *
     * @return bool
     */
    public function isEnabled()
    {
        return true;
    }

    /**
     * Configures the current command.
     */
    protected function configure()
    {
    }

    /**
     * Executes the current command.
     *
     * This method is not abstract because you can use this class
     * as a concrete class. In this case, instead of defining the
     * execute() method, you set the code to execute by passing
     * a Closure to the setCode() method.
     *
     * @return int|null null or 0 if everything went fine, or an error code
     *
     * @throws LogicException When this abstract method is not implemented
     *
     * @see setCode()
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        throw new LogicException('You must override the execute() method in the concrete command class.');
    }

    /**
     * Interacts with the user.
     *
     * This method is executed before the InputDefinition is validated.
     * This means that this is the only place where the command can
     * interactively ask for values of missing required arguments.
     */
    protected function interact(InputInterface $input, OutputInterface $output)
    {
    }

    /**
     * Initializes the command after the input has been bound and before the input
     * is validated.
     *
     * This is mainly useful when a lot of commands extends one main command
     * where some things need to be initialized based on the input arguments and options.
     *
     * @see InputInterface::bind()
     * @see InputInterface::validate()
     */
    protected function initialize(InputInterface $input, OutputInterface $output)
    {
    }

    /**
     * Runs the command.
     *
     * The code to execute is either defined directly with the
     * setCode() method or by overriding the execute() method
     * in a sub-class.
     *
     * @return int The command exit code
     *
     * @throws \Exception When binding input fails. Bypass this by calling {@link ignoreValidationErrors()}.
     *
     * @see setCode()
     * @see execute()
     */
    public function run(InputInterface $input, OutputInterface $output)
    {
        // force the creation of the synopsis before the merge with the app definition
        $this->getSynopsis(true);
        $this->getSynopsis(false);

        // add the application arguments and options
        $this->mergeApplicationDefinition();

        // bind the input against the command specific arguments/options
        try {
            $input->bind($this->definition);
        } catch (ExceptionInterface $e) {
            if (!$this->ignoreValidationErrors) {
                throw $e;
            }
        }

        $this->initialize($input, $output);

        if (null !== $this->processTitle) {
            if (\function_exists('cli_set_process_title')) {
                if (!@cli_set_process_title($this->processTitle)) {
                    if ('Darwin' === PHP_OS) {
                        $output->writeln('<comment>Running "cli_set_process_title" as an unprivileged user is not supported on MacOS.</comment>', OutputInterface::VERBOSITY_VERY_VERBOSE);
                    } else {
                        cli_set_process_title($this->processTitle);
                    }
                }
            } elseif (\function_exists('setproctitle')) {
                setproctitle($this->processTitle);
            } elseif (OutputInterface::VERBOSITY_VERY_VERBOSE === $output->getVerbosity()) {
                $output->writeln('<comment>Install the proctitle PECL to be able to change the process title.</comment>');
            }
        }

        if ($input->isInteractive()) {
            $this->interact($input, $output);
        }

        // The command name argument is often omitted when a command is executed directly with its run() method.
        // It would fail the validation if we didn't make sure the command argument is present,
        // since it's required by the application.
        if ($input->hasArgument('command') && null === $input->getArgument('command')) {
            $input->setArgument('command', $this->getName());
        }

        $input->validate();

        if ($this->code) {
            $statusCode = \call_user_func($this->code, $input, $output);
        } else {
            $statusCode = $this->execute($input, $output);
        }

        return is_numeric($statusCode) ? (int) $statusCode : 0;
    }

    /**
     * Sets the code to execute when running this command.
     *
     * If this method is used, it overrides the code defined
     * in the execute() method.
     *
     * @param callable $code A callable(InputInterface $input, OutputInterface $output)
     *
     * @return $this
     *
     * @throws InvalidArgumentException
     *
     * @see execute()
     */
    public function setCode(callable $code)
    {
        if ($code instanceof \Closure) {
            $r = new \ReflectionFunction($code);
            if (null === $r->getClosureThis()) {
                if (\PHP_VERSION_ID < 70000) {
                    // Bug in PHP5: https://bugs.php.net/64761
                    // This means that we cannot bind static closures and therefore we must
                    // ignore any errors here.  There is no way to test if the closure is
                    // bindable.
                    $code = @\Closure::bind($code, $this);
                } else {
                    $code = \Closure::bind($code, $this);
                }
            }
        }

        $this->code = $code;

        return $this;
    }

    /**
     * Merges the application definition with the command definition.
     *
     * This method is not part of public API and should not be used directly.
     *
     * @param bool $mergeArgs Whether to merge or not the Application definition arguments to Command definition arguments
     */
    public function mergeApplicationDefinition($mergeArgs = true)
    {
        if (null === $this->application || (true === $this->applicationDefinitionMerged && ($this->applicationDefinitionMergedWithArgs || !$mergeArgs))) {
            return;
        }

        $this->definition->addOptions($this->application->getDefinition()->getOptions());

        $this->applicationDefinitionMerged = true;

        if ($mergeArgs) {
            $currentArguments = $this->definition->getArguments();
            $this->definition->setArguments($this->application->getDefinition()->getArguments());
            $this->definition->addArguments($currentArguments);

            $this->applicationDefinitionMergedWithArgs = true;
        }
    }

    /**
     * Sets an array of argument and option instances.
     *
     * @param array|InputDefinition $definition An array of argument and option instances or a definition instance
     *
     * @return $this
     */
    public function setDefinition($definition)
    {
        if ($definition instanceof InputDefinition) {
            $this->definition = $definition;
        } else {
            $this->definition->setDefinition($definition);
        }

        $this->applicationDefinitionMerged = false;

        return $this;
    }

    /**
     * Gets the InputDefinition attached to this Command.
     *
     * @return InputDefinition An InputDefinition instance
     */
    public function getDefinition()
    {
        if (null === $this->definition) {
            throw new LogicException(sprintf('Command class "%s" is not correctly initialized. You probably forgot to call the parent constructor.', \get_class($this)));
        }

        return $this->definition;
    }

    /**
     * Gets the InputDefinition to be used to create representations of this Command.
     *
     * Can be overridden to provide the original command representation when it would otherwise
     * be changed by merging with the application InputDefinition.
     *
     * This method is not part of public API and should not be used directly.
     *
     * @return InputDefinition An InputDefinition instance
     */
    public function getNativeDefinition()
    {
        return $this->getDefinition();
    }

    /**
     * Adds an argument.
     *
     * @param string               $name        The argument name
     * @param int|null             $mode        The argument mode: InputArgument::REQUIRED or InputArgument::OPTIONAL
     * @param string               $description A description text
     * @param string|string[]|null $default     The default value (for InputArgument::OPTIONAL mode only)
     *
     * @throws InvalidArgumentException When argument mode is not valid
     *
     * @return $this
     */
    public function addArgument($name, $mode = null, $description = '', $default = null)
    {
        $this->definition->addArgument(new InputArgument($name, $mode, $description, $default));

        return $this;
    }

    /**
     * Adds an option.
     *
     * @param string                        $name        The option name
     * @param string|array|null             $shortcut    The shortcuts, can be null, a string of shortcuts delimited by | or an array of shortcuts
     * @param int|null                      $mode        The option mode: One of the InputOption::VALUE_* constants
     * @param string                        $description A description text
     * @param string|string[]|int|bool|null $default     The default value (must be null for InputOption::VALUE_NONE)
     *
     * @throws InvalidArgumentException If option mode is invalid or incompatible
     *
     * @return $this
     */
    public function addOption($name, $shortcut = null, $mode = null, $description = '', $default = null)
    {
        $this->definition->addOption(new InputOption($name, $shortcut, $mode, $description, $default));

        return $this;
    }

    /**
     * Sets the name of the command.
     *
     * This method can set both the namespace and the name if
     * you separate them by a colon (:)
     *
     *     $command->setName('foo:bar');
     *
     * @param string $name The command name
     *
     * @return $this
     *
     * @throws InvalidArgumentException When the name is invalid
     */
    public function setName($name)
    {
        $this->validateName($name);

        $this->name = $name;

        return $this;
    }

    /**
     * Sets the process title of the command.
     *
     * This feature should be used only when creating a long process command,
     * like a daemon.
     *
     * PHP 5.5+ or the proctitle PECL library is required
     *
     * @param string $title The process title
     *
     * @return $this
     */
    public function setProcessTitle($title)
    {
        $this->processTitle = $title;

        return $this;
    }

    /**
     * Returns the command name.
     *
     * @return string|null
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * @param bool $hidden Whether or not the command should be hidden from the list of commands
     *
     * @return Command The current instance
     */
    public function setHidden($hidden)
    {
        $this->hidden = (bool) $hidden;

        return $this;
    }

    /**
     * @return bool whether the command should be publicly shown or not
     */
    public function isHidden()
    {
        return $this->hidden;
    }

    /**
     * Sets the description for the command.
     *
     * @param string $description The description for the command
     *
     * @return $this
     */
    public function setDescription($description)
    {
        $this->description = $description;

        return $this;
    }

    /**
     * Returns the description for the command.
     *
     * @return string The description for the command
     */
    public function getDescription()
    {
        return $this->description;
    }

    /**
     * Sets the help for the command.
     *
     * @param string $help The help for the command
     *
     * @return $this
     */
    public function setHelp($help)
    {
        $this->help = $help;

        return $this;
    }

    /**
     * Returns the help for the command.
     *
     * @return string The help for the command
     */
    public function getHelp()
    {
        return $this->help;
    }

    /**
     * Returns the processed help for the command replacing the %command.name% and
     * %command.full_name% patterns with the real values dynamically.
     *
     * @return string The processed help for the command
     */
    public function getProcessedHelp()
    {
        $name = $this->name;
        $isSingleCommand = $this->application && $this->application->isSingleCommand();

        $placeholders = [
            '%command.name%',
            '%command.full_name%',
        ];
        $replacements = [
            $name,
            $isSingleCommand ? $_SERVER['PHP_SELF'] : $_SERVER['PHP_SELF'].' '.$name,
        ];

        return str_replace($placeholders, $replacements, $this->getHelp() ?: $this->getDescription());
    }

    /**
     * Sets the aliases for the command.
     *
     * @param string[] $aliases An array of aliases for the command
     *
     * @return $this
     *
     * @throws InvalidArgumentException When an alias is invalid
     */
    public function setAliases($aliases)
    {
        if (!\is_array($aliases) && !$aliases instanceof \Traversable) {
            throw new InvalidArgumentException('$aliases must be an array or an instance of \Traversable');
        }

        foreach ($aliases as $alias) {
            $this->validateName($alias);
        }

        $this->aliases = $aliases;

        return $this;
    }

    /**
     * Returns the aliases for the command.
     *
     * @return array An array of aliases for the command
     */
    public function getAliases()
    {
        return $this->aliases;
    }

    /**
     * Returns the synopsis for the command.
     *
     * @param bool $short Whether to show the short version of the synopsis (with options folded) or not
     *
     * @return string The synopsis
     */
    public function getSynopsis($short = false)
    {
        $key = $short ? 'short' : 'long';

        if (!isset($this->synopsis[$key])) {
            $this->synopsis[$key] = trim(sprintf('%s %s', $this->name, $this->definition->getSynopsis($short)));
        }

        return $this->synopsis[$key];
    }

    /**
     * Add a command usage example.
     *
     * @param string $usage The usage, it'll be prefixed with the command name
     *
     * @return $this
     */
    public function addUsage($usage)
    {
        if (0 !== strpos($usage, $this->name)) {
            $usage = sprintf('%s %s', $this->name, $usage);
        }

        $this->usages[] = $usage;

        return $this;
    }

    /**
     * Returns alternative usages of the command.
     *
     * @return array
     */
    public function getUsages()
    {
        return $this->usages;
    }

    /**
     * Gets a helper instance by name.
     *
     * @param string $name The helper name
     *
     * @return mixed The helper value
     *
     * @throws LogicException           if no HelperSet is defined
     * @throws InvalidArgumentException if the helper is not defined
     */
    public function getHelper($name)
    {
        if (null === $this->helperSet) {
            throw new LogicException(sprintf('Cannot retrieve helper "%s" because there is no HelperSet defined. Did you forget to add your command to the application or to set the application on the command using the setApplication() method? You can also set the HelperSet directly using the setHelperSet() method.', $name));
        }

        return $this->helperSet->get($name);
    }

    /**
     * Validates a command name.
     *
     * It must be non-empty and parts can optionally be separated by ":".
     *
     * @param string $name
     *
     * @throws InvalidArgumentException When the name is invalid
     */
    private function validateName($name)
    {
        if (!preg_match('/^[^\:]++(\:[^\:]++)*$/', $name)) {
            throw new InvalidArgumentException(sprintf('Command name "%s" is invalid.', $name));
        }
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Helper;

use Symfony\Component\Console\Exception\InvalidArgumentException;
use Symfony\Component\Console\Exception\LogicException;

/**
 * Defines the styles for a Table.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Ð¡Ð°ÑˆÐ° Ð¡Ñ‚Ð°Ð¼ÐµÐ½ÐºÐ¾Ð²Ð¸Ñ› <umpirsky@gmail.com>
 */
class TableStyle
{
    private $paddingChar = ' ';
    private $horizontalBorderChar = '-';
    private $verticalBorderChar = '|';
    private $crossingChar = '+';
    private $cellHeaderFormat = '<info>%s</info>';
    private $cellRowFormat = '%s';
    private $cellRowContentFormat = ' %s ';
    private $borderFormat = '%s';
    private $padType = STR_PAD_RIGHT;

    /**
     * Sets padding character, used for cell padding.
     *
     * @param string $paddingChar
     *
     * @return $this
     */
    public function setPaddingChar($paddingChar)
    {
        if (!$paddingChar) {
            throw new LogicException('The padding char must not be empty');
        }

        $this->paddingChar = $paddingChar;

        return $this;
    }

    /**
     * Gets padding character, used for cell padding.
     *
     * @return string
     */
    public function getPaddingChar()
    {
        return $this->paddingChar;
    }

    /**
     * Sets horizontal border character.
     *
     * @param string $horizontalBorderChar
     *
     * @return $this
     */
    public function setHorizontalBorderChar($horizontalBorderChar)
    {
        $this->horizontalBorderChar = $horizontalBorderChar;

        return $this;
    }

    /**
     * Gets horizontal border character.
     *
     * @return string
     */
    public function getHorizontalBorderChar()
    {
        return $this->horizontalBorderChar;
    }

    /**
     * Sets vertical border character.
     *
     * @param string $verticalBorderChar
     *
     * @return $this
     */
    public function setVerticalBorderChar($verticalBorderChar)
    {
        $this->verticalBorderChar = $verticalBorderChar;

        return $this;
    }

    /**
     * Gets vertical border character.
     *
     * @return string
     */
    public function getVerticalBorderChar()
    {
        return $this->verticalBorderChar;
    }

    /**
     * Sets crossing character.
     *
     * @param string $crossingChar
     *
     * @return $this
     */
    public function setCrossingChar($crossingChar)
    {
        $this->crossingChar = $crossingChar;

        return $this;
    }

    /**
     * Gets crossing character.
     *
     * @return string
     */
    public function getCrossingChar()
    {
        return $this->crossingChar;
    }

    /**
     * Sets header cell format.
     *
     * @param string $cellHeaderFormat
     *
     * @return $this
     */
    public function setCellHeaderFormat($cellHeaderFormat)
    {
        $this->cellHeaderFormat = $cellHeaderFormat;

        return $this;
    }

    /**
     * Gets header cell format.
     *
     * @return string
     */
    public function getCellHeaderFormat()
    {
        return $this->cellHeaderFormat;
    }

    /**
     * Sets row cell format.
     *
     * @param string $cellRowFormat
     *
     * @return $this
     */
    public function setCellRowFormat($cellRowFormat)
    {
        $this->cellRowFormat = $cellRowFormat;

        return $this;
    }

    /**
     * Gets row cell format.
     *
     * @return string
     */
    public function getCellRowFormat()
    {
        return $this->cellRowFormat;
    }

    /**
     * Sets row cell content format.
     *
     * @param string $cellRowContentFormat
     *
     * @return $this
     */
    public function setCellRowContentFormat($cellRowContentFormat)
    {
        $this->cellRowContentFormat = $cellRowContentFormat;

        return $this;
    }

    /**
     * Gets row cell content format.
     *
     * @return string
     */
    public function getCellRowContentFormat()
    {
        return $this->cellRowContentFormat;
    }

    /**
     * Sets table border format.
     *
     * @param string $borderFormat
     *
     * @return $this
     */
    public function setBorderFormat($borderFormat)
    {
        $this->borderFormat = $borderFormat;

        return $this;
    }

    /**
     * Gets table border format.
     *
     * @return string
     */
    public function getBorderFormat()
    {
        return $this->borderFormat;
    }

    /**
     * Sets cell padding type.
     *
     * @param int $padType STR_PAD_*
     *
     * @return $this
     */
    public function setPadType($padType)
    {
        if (!\in_array($padType, [STR_PAD_LEFT, STR_PAD_RIGHT, STR_PAD_BOTH], true)) {
            throw new InvalidArgumentException('Invalid padding type. Expected one of (STR_PAD_LEFT, STR_PAD_RIGHT, STR_PAD_BOTH).');
        }

        $this->padType = $padType;

        return $this;
    }

    /**
     * Gets cell padding type.
     *
     * @return int
     */
    public function getPadType()
    {
        return $this->padType;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Helper;

use Symfony\Component\Console\Exception\LogicException;
use Symfony\Component\Console\Formatter\OutputFormatter;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Question\ChoiceQuestion;
use Symfony\Component\Console\Question\ConfirmationQuestion;
use Symfony\Component\Console\Question\Question;
use Symfony\Component\Console\Style\SymfonyStyle;

/**
 * Symfony Style Guide compliant question helper.
 *
 * @author Kevin Bond <kevinbond@gmail.com>
 */
class SymfonyQuestionHelper extends QuestionHelper
{
    /**
     * {@inheritdoc}
     *
     * To be removed in 4.0
     */
    public function ask(InputInterface $input, OutputInterface $output, Question $question)
    {
        $validator = $question->getValidator();
        $question->setValidator(function ($value) use ($validator) {
            if (null !== $validator) {
                $value = $validator($value);
            } else {
                // make required
                if (!\is_array($value) && !\is_bool($value) && 0 === \strlen($value)) {
                    @trigger_error('The default question validator is deprecated since Symfony 3.3 and will not be used anymore in version 4.0. Set a custom question validator if needed.', E_USER_DEPRECATED);

                    throw new LogicException('A value is required.');
                }
            }

            return $value;
        });

        return parent::ask($input, $output, $question);
    }

    /**
     * {@inheritdoc}
     */
    protected function writePrompt(OutputInterface $output, Question $question)
    {
        $text = OutputFormatter::escapeTrailingBackslash($question->getQuestion());
        $default = $question->getDefault();

        switch (true) {
            case null === $default:
                $text = sprintf(' <info>%s</info>:', $text);

                break;

            case $question instanceof ConfirmationQuestion:
                $text = sprintf(' <info>%s (yes/no)</info> [<comment>%s</comment>]:', $text, $default ? 'yes' : 'no');

                break;

            case $question instanceof ChoiceQuestion && $question->isMultiselect():
                $choices = $question->getChoices();
                $default = explode(',', $default);

                foreach ($default as $key => $value) {
                    $default[$key] = $choices[trim($value)];
                }

                $text = sprintf(' <info>%s</info> [<comment>%s</comment>]:', $text, OutputFormatter::escape(implode(', ', $default)));

                break;

            case $question instanceof ChoiceQuestion:
                $choices = $question->getChoices();
                $text = sprintf(' <info>%s</info> [<comment>%s</comment>]:', $text, OutputFormatter::escape(isset($choices[$default]) ? $choices[$default] : $default));

                break;

            default:
                $text = sprintf(' <info>%s</info> [<comment>%s</comment>]:', $text, OutputFormatter::escape($default));
        }

        $output->writeln($text);

        if ($question instanceof ChoiceQuestion) {
            $width = max(array_map('strlen', array_keys($question->getChoices())));

            foreach ($question->getChoices() as $key => $value) {
                $output->writeln(sprintf("  [<comment>%-${width}s</comment>] %s", $key, $value));
            }
        }

        $output->write(' > ');
    }

    /**
     * {@inheritdoc}
     */
    protected function writeError(OutputInterface $output, \Exception $error)
    {
        if ($output instanceof SymfonyStyle) {
            $output->newLine();
            $output->error($error->getMessage());

            return;
        }

        parent::writeError($output, $error);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Helper;

/**
 * HelperInterface is the interface all helpers must implement.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
interface HelperInterface
{
    /**
     * Sets the helper set associated with this helper.
     */
    public function setHelperSet(HelperSet $helperSet = null);

    /**
     * Gets the helper set associated with this helper.
     *
     * @return HelperSet A HelperSet instance
     */
    public function getHelperSet();

    /**
     * Returns the canonical name of this helper.
     *
     * @return string The canonical name
     */
    public function getName();
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Helper;

use Symfony\Component\Console\Exception\InvalidArgumentException;

/**
 * @author Abdellatif Ait boudad <a.aitboudad@gmail.com>
 */
class TableCell
{
    private $value;
    private $options = [
        'rowspan' => 1,
        'colspan' => 1,
    ];

    /**
     * @param string $value
     */
    public function __construct($value = '', array $options = [])
    {
        if (is_numeric($value) && !\is_string($value)) {
            $value = (string) $value;
        }

        $this->value = $value;

        // check option names
        if ($diff = array_diff(array_keys($options), array_keys($this->options))) {
            throw new InvalidArgumentException(sprintf('The TableCell does not support the following options: \'%s\'.', implode('\', \'', $diff)));
        }

        $this->options = array_merge($this->options, $options);
    }

    /**
     * Returns the cell value.
     *
     * @return string
     */
    public function __toString()
    {
        return $this->value;
    }

    /**
     * Gets number of colspan.
     *
     * @return int
     */
    public function getColspan()
    {
        return (int) $this->options['colspan'];
    }

    /**
     * Gets number of rowspan.
     *
     * @return int
     */
    public function getRowspan()
    {
        return (int) $this->options['rowspan'];
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Helper;

use Symfony\Component\Console\Output\ConsoleOutputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Process\Exception\ProcessFailedException;
use Symfony\Component\Process\Process;

/**
 * The ProcessHelper class provides helpers to run external processes.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ProcessHelper extends Helper
{
    /**
     * Runs an external process.
     *
     * @param OutputInterface      $output    An OutputInterface instance
     * @param string|array|Process $cmd       An instance of Process or an array of arguments to escape and run or a command to run
     * @param string|null          $error     An error message that must be displayed if something went wrong
     * @param callable|null        $callback  A PHP callback to run whenever there is some
     *                                        output available on STDOUT or STDERR
     * @param int                  $verbosity The threshold for verbosity
     *
     * @return Process The process that ran
     */
    public function run(OutputInterface $output, $cmd, $error = null, callable $callback = null, $verbosity = OutputInterface::VERBOSITY_VERY_VERBOSE)
    {
        if ($output instanceof ConsoleOutputInterface) {
            $output = $output->getErrorOutput();
        }

        $formatter = $this->getHelperSet()->get('debug_formatter');

        if ($cmd instanceof Process) {
            $process = $cmd;
        } else {
            $process = new Process($cmd);
        }

        if ($verbosity <= $output->getVerbosity()) {
            $output->write($formatter->start(spl_object_hash($process), $this->escapeString($process->getCommandLine())));
        }

        if ($output->isDebug()) {
            $callback = $this->wrapCallback($output, $process, $callback);
        }

        $process->run($callback);

        if ($verbosity <= $output->getVerbosity()) {
            $message = $process->isSuccessful() ? 'Command ran successfully' : sprintf('%s Command did not run successfully', $process->getExitCode());
            $output->write($formatter->stop(spl_object_hash($process), $message, $process->isSuccessful()));
        }

        if (!$process->isSuccessful() && null !== $error) {
            $output->writeln(sprintf('<error>%s</error>', $this->escapeString($error)));
        }

        return $process;
    }

    /**
     * Runs the process.
     *
     * This is identical to run() except that an exception is thrown if the process
     * exits with a non-zero exit code.
     *
     * @param OutputInterface $output   An OutputInterface instance
     * @param string|Process  $cmd      An instance of Process or a command to run
     * @param string|null     $error    An error message that must be displayed if something went wrong
     * @param callable|null   $callback A PHP callback to run whenever there is some
     *                                  output available on STDOUT or STDERR
     *
     * @return Process The process that ran
     *
     * @throws ProcessFailedException
     *
     * @see run()
     */
    public function mustRun(OutputInterface $output, $cmd, $error = null, callable $callback = null)
    {
        $process = $this->run($output, $cmd, $error, $callback);

        if (!$process->isSuccessful()) {
            throw new ProcessFailedException($process);
        }

        return $process;
    }

    /**
     * Wraps a Process callback to add debugging output.
     *
     * @param OutputInterface $output   An OutputInterface interface
     * @param Process         $process  The Process
     * @param callable|null   $callback A PHP callable
     *
     * @return callable
     */
    public function wrapCallback(OutputInterface $output, Process $process, callable $callback = null)
    {
        if ($output instanceof ConsoleOutputInterface) {
            $output = $output->getErrorOutput();
        }

        $formatter = $this->getHelperSet()->get('debug_formatter');

        return function ($type, $buffer) use ($output, $process, $callback, $formatter) {
            $output->write($formatter->progress(spl_object_hash($process), $this->escapeString($buffer), Process::ERR === $type));

            if (null !== $callback) {
                \call_user_func($callback, $type, $buffer);
            }
        };
    }

    private function escapeString($str)
    {
        return str_replace('<', '\\<', $str);
    }

    /**
     * {@inheritdoc}
     */
    public function getName()
    {
        return 'process';
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Helper;

/**
 * Marks a row as being a separator.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class TableSeparator extends TableCell
{
    public function __construct(array $options = [])
    {
        parent::__construct('', $options);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Helper;

use Symfony\Component\Console\Formatter\OutputFormatter;

/**
 * The Formatter class provides helpers to format messages.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class FormatterHelper extends Helper
{
    /**
     * Formats a message within a section.
     *
     * @param string $section The section name
     * @param string $message The message
     * @param string $style   The style to apply to the section
     *
     * @return string The format section
     */
    public function formatSection($section, $message, $style = 'info')
    {
        return sprintf('<%s>[%s]</%s> %s', $style, $section, $style, $message);
    }

    /**
     * Formats a message as a block of text.
     *
     * @param string|array $messages The message to write in the block
     * @param string       $style    The style to apply to the whole block
     * @param bool         $large    Whether to return a large block
     *
     * @return string The formatter message
     */
    public function formatBlock($messages, $style, $large = false)
    {
        if (!\is_array($messages)) {
            $messages = [$messages];
        }

        $len = 0;
        $lines = [];
        foreach ($messages as $message) {
            $message = OutputFormatter::escape($message);
            $lines[] = sprintf($large ? '  %s  ' : ' %s ', $message);
            $len = max($this->strlen($message) + ($large ? 4 : 2), $len);
        }

        $messages = $large ? [str_repeat(' ', $len)] : [];
        for ($i = 0; isset($lines[$i]); ++$i) {
            $messages[] = $lines[$i].str_repeat(' ', $len - $this->strlen($lines[$i]));
        }
        if ($large) {
            $messages[] = str_repeat(' ', $len);
        }

        for ($i = 0; isset($messages[$i]); ++$i) {
            $messages[$i] = sprintf('<%s>%s</%s>', $style, $messages[$i], $style);
        }

        return implode("\n", $messages);
    }

    /**
     * Truncates a message to the given length.
     *
     * @param string $message
     * @param int    $length
     * @param string $suffix
     *
     * @return string
     */
    public function truncate($message, $length, $suffix = '...')
    {
        $computedLength = $length - $this->strlen($suffix);

        if ($computedLength > $this->strlen($message)) {
            return $message;
        }

        if (false === $encoding = mb_detect_encoding($message, null, true)) {
            return substr($message, 0, $length).$suffix;
        }

        return mb_substr($message, 0, $length, $encoding).$suffix;
    }

    /**
     * {@inheritdoc}
     */
    public function getName()
    {
        return 'formatter';
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Helper;

use Symfony\Component\Console\Exception\LogicException;
use Symfony\Component\Console\Output\ConsoleOutputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Terminal;

/**
 * The ProgressBar provides helpers to display progress output.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Chris Jones <leeked@gmail.com>
 */
final class ProgressBar
{
    private $barWidth = 28;
    private $barChar;
    private $emptyBarChar = '-';
    private $progressChar = '>';
    private $format;
    private $internalFormat;
    private $redrawFreq = 1;
    private $output;
    private $step = 0;
    private $max;
    private $startTime;
    private $stepWidth;
    private $percent = 0.0;
    private $formatLineCount;
    private $messages = [];
    private $overwrite = true;
    private $terminal;
    private $firstRun = true;

    private static $formatters;
    private static $formats;

    /**
     * @param OutputInterface $output An OutputInterface instance
     * @param int             $max    Maximum steps (0 if unknown)
     */
    public function __construct(OutputInterface $output, $max = 0)
    {
        if ($output instanceof ConsoleOutputInterface) {
            $output = $output->getErrorOutput();
        }

        $this->output = $output;
        $this->setMaxSteps($max);
        $this->terminal = new Terminal();

        if (!$this->output->isDecorated()) {
            // disable overwrite when output does not support ANSI codes.
            $this->overwrite = false;

            // set a reasonable redraw frequency so output isn't flooded
            $this->setRedrawFrequency($max / 10);
        }

        $this->startTime = time();
    }

    /**
     * Sets a placeholder formatter for a given name.
     *
     * This method also allow you to override an existing placeholder.
     *
     * @param string   $name     The placeholder name (including the delimiter char like %)
     * @param callable $callable A PHP callable
     */
    public static function setPlaceholderFormatterDefinition($name, callable $callable)
    {
        if (!self::$formatters) {
            self::$formatters = self::initPlaceholderFormatters();
        }

        self::$formatters[$name] = $callable;
    }

    /**
     * Gets the placeholder formatter for a given name.
     *
     * @param string $name The placeholder name (including the delimiter char like %)
     *
     * @return callable|null A PHP callable
     */
    public static function getPlaceholderFormatterDefinition($name)
    {
        if (!self::$formatters) {
            self::$formatters = self::initPlaceholderFormatters();
        }

        return isset(self::$formatters[$name]) ? self::$formatters[$name] : null;
    }

    /**
     * Sets a format for a given name.
     *
     * This method also allow you to override an existing format.
     *
     * @param string $name   The format name
     * @param string $format A format string
     */
    public static function setFormatDefinition($name, $format)
    {
        if (!self::$formats) {
            self::$formats = self::initFormats();
        }

        self::$formats[$name] = $format;
    }

    /**
     * Gets the format for a given name.
     *
     * @param string $name The format name
     *
     * @return string|null A format string
     */
    public static function getFormatDefinition($name)
    {
        if (!self::$formats) {
            self::$formats = self::initFormats();
        }

        return isset(self::$formats[$name]) ? self::$formats[$name] : null;
    }

    /**
     * Associates a text with a named placeholder.
     *
     * The text is displayed when the progress bar is rendered but only
     * when the corresponding placeholder is part of the custom format line
     * (by wrapping the name with %).
     *
     * @param string $message The text to associate with the placeholder
     * @param string $name    The name of the placeholder
     */
    public function setMessage($message, $name = 'message')
    {
        $this->messages[$name] = $message;
    }

    public function getMessage($name = 'message')
    {
        return $this->messages[$name];
    }

    /**
     * Gets the progress bar start time.
     *
     * @return int The progress bar start time
     */
    public function getStartTime()
    {
        return $this->startTime;
    }

    /**
     * Gets the progress bar maximal steps.
     *
     * @return int The progress bar max steps
     */
    public function getMaxSteps()
    {
        return $this->max;
    }

    /**
     * Gets the current step position.
     *
     * @return int The progress bar step
     */
    public function getProgress()
    {
        return $this->step;
    }

    /**
     * Gets the progress bar step width.
     *
     * @return int The progress bar step width
     */
    private function getStepWidth()
    {
        return $this->stepWidth;
    }

    /**
     * Gets the current progress bar percent.
     *
     * @return float The current progress bar percent
     */
    public function getProgressPercent()
    {
        return $this->percent;
    }

    /**
     * Sets the progress bar width.
     *
     * @param int $size The progress bar size
     */
    public function setBarWidth($size)
    {
        $this->barWidth = max(1, (int) $size);
    }

    /**
     * Gets the progress bar width.
     *
     * @return int The progress bar size
     */
    public function getBarWidth()
    {
        return $this->barWidth;
    }

    /**
     * Sets the bar character.
     *
     * @param string $char A character
     */
    public function setBarCharacter($char)
    {
        $this->barChar = $char;
    }

    /**
     * Gets the bar character.
     *
     * @return string A character
     */
    public function getBarCharacter()
    {
        if (null === $this->barChar) {
            return $this->max ? '=' : $this->emptyBarChar;
        }

        return $this->barChar;
    }

    /**
     * Sets the empty bar character.
     *
     * @param string $char A character
     */
    public function setEmptyBarCharacter($char)
    {
        $this->emptyBarChar = $char;
    }

    /**
     * Gets the empty bar character.
     *
     * @return string A character
     */
    public function getEmptyBarCharacter()
    {
        return $this->emptyBarChar;
    }

    /**
     * Sets the progress bar character.
     *
     * @param string $char A character
     */
    public function setProgressCharacter($char)
    {
        $this->progressChar = $char;
    }

    /**
     * Gets the progress bar character.
     *
     * @return string A character
     */
    public function getProgressCharacter()
    {
        return $this->progressChar;
    }

    /**
     * Sets the progress bar format.
     *
     * @param string $format The format
     */
    public function setFormat($format)
    {
        $this->format = null;
        $this->internalFormat = $format;
    }

    /**
     * Sets the redraw frequency.
     *
     * @param int|float $freq The frequency in steps
     */
    public function setRedrawFrequency($freq)
    {
        $this->redrawFreq = max((int) $freq, 1);
    }

    /**
     * Starts the progress output.
     *
     * @param int|null $max Number of steps to complete the bar (0 if indeterminate), null to leave unchanged
     */
    public function start($max = null)
    {
        $this->startTime = time();
        $this->step = 0;
        $this->percent = 0.0;

        if (null !== $max) {
            $this->setMaxSteps($max);
        }

        $this->display();
    }

    /**
     * Advances the progress output X steps.
     *
     * @param int $step Number of steps to advance
     */
    public function advance($step = 1)
    {
        $this->setProgress($this->step + $step);
    }

    /**
     * Sets whether to overwrite the progressbar, false for new line.
     *
     * @param bool $overwrite
     */
    public function setOverwrite($overwrite)
    {
        $this->overwrite = (bool) $overwrite;
    }

    /**
     * Sets the current progress.
     *
     * @param int $step The current progress
     */
    public function setProgress($step)
    {
        $step = (int) $step;

        if ($this->max && $step > $this->max) {
            $this->max = $step;
        } elseif ($step < 0) {
            $step = 0;
        }

        $prevPeriod = (int) ($this->step / $this->redrawFreq);
        $currPeriod = (int) ($step / $this->redrawFreq);
        $this->step = $step;
        $this->percent = $this->max ? (float) $this->step / $this->max : 0;
        if ($prevPeriod !== $currPeriod || $this->max === $step) {
            $this->display();
        }
    }

    /**
     * Finishes the progress output.
     */
    public function finish()
    {
        if (!$this->max) {
            $this->max = $this->step;
        }

        if ($this->step === $this->max && !$this->overwrite) {
            // prevent double 100% output
            return;
        }

        $this->setProgress($this->max);
    }

    /**
     * Outputs the current progress string.
     */
    public function display()
    {
        if (OutputInterface::VERBOSITY_QUIET === $this->output->getVerbosity()) {
            return;
        }

        if (null === $this->format) {
            $this->setRealFormat($this->internalFormat ?: $this->determineBestFormat());
        }

        $this->overwrite($this->buildLine());
    }

    /**
     * Removes the progress bar from the current line.
     *
     * This is useful if you wish to write some output
     * while a progress bar is running.
     * Call display() to show the progress bar again.
     */
    public function clear()
    {
        if (!$this->overwrite) {
            return;
        }

        if (null === $this->format) {
            $this->setRealFormat($this->internalFormat ?: $this->determineBestFormat());
        }

        $this->overwrite('');
    }

    /**
     * Sets the progress bar format.
     *
     * @param string $format The format
     */
    private function setRealFormat($format)
    {
        // try to use the _nomax variant if available
        if (!$this->max && null !== self::getFormatDefinition($format.'_nomax')) {
            $this->format = self::getFormatDefinition($format.'_nomax');
        } elseif (null !== self::getFormatDefinition($format)) {
            $this->format = self::getFormatDefinition($format);
        } else {
            $this->format = $format;
        }

        $this->formatLineCount = substr_count($this->format, "\n");
    }

    /**
     * Sets the progress bar maximal steps.
     *
     * @param int $max The progress bar max steps
     */
    private function setMaxSteps($max)
    {
        $this->max = max(0, (int) $max);
        $this->stepWidth = $this->max ? Helper::strlen($this->max) : 4;
    }

    /**
     * Overwrites a previous message to the output.
     *
     * @param string $message The message
     */
    private function overwrite($message)
    {
        if ($this->overwrite) {
            if (!$this->firstRun) {
                // Erase previous lines
                if ($this->formatLineCount > 0) {
                    $message = str_repeat("\x1B[1A\x1B[2K", $this->formatLineCount).$message;
                }

                // Move the cursor to the beginning of the line and erase the line
                $message = "\x0D\x1B[2K$message";
            }
        } elseif ($this->step > 0) {
            $message = PHP_EOL.$message;
        }

        $this->firstRun = false;

        $this->output->write($message);
    }

    private function determineBestFormat()
    {
        switch ($this->output->getVerbosity()) {
            // OutputInterface::VERBOSITY_QUIET: display is disabled anyway
            case OutputInterface::VERBOSITY_VERBOSE:
                return $this->max ? 'verbose' : 'verbose_nomax';
            case OutputInterface::VERBOSITY_VERY_VERBOSE:
                return $this->max ? 'very_verbose' : 'very_verbose_nomax';
            case OutputInterface::VERBOSITY_DEBUG:
                return $this->max ? 'debug' : 'debug_nomax';
            default:
                return $this->max ? 'normal' : 'normal_nomax';
        }
    }

    private static function initPlaceholderFormatters()
    {
        return [
            'bar' => function (self $bar, OutputInterface $output) {
                $completeBars = floor($bar->getMaxSteps() > 0 ? $bar->getProgressPercent() * $bar->getBarWidth() : $bar->getProgress() % $bar->getBarWidth());
                $display = str_repeat($bar->getBarCharacter(), $completeBars);
                if ($completeBars < $bar->getBarWidth()) {
                    $emptyBars = $bar->getBarWidth() - $completeBars - Helper::strlenWithoutDecoration($output->getFormatter(), $bar->getProgressCharacter());
                    $display .= $bar->getProgressCharacter().str_repeat($bar->getEmptyBarCharacter(), $emptyBars);
                }

                return $display;
            },
            'elapsed' => function (self $bar) {
                return Helper::formatTime(time() - $bar->getStartTime());
            },
            'remaining' => function (self $bar) {
                if (!$bar->getMaxSteps()) {
                    throw new LogicException('Unable to display the remaining time if the maximum number of steps is not set.');
                }

                if (!$bar->getProgress()) {
                    $remaining = 0;
                } else {
                    $remaining = round((time() - $bar->getStartTime()) / $bar->getProgress() * ($bar->getMaxSteps() - $bar->getProgress()));
                }

                return Helper::formatTime($remaining);
            },
            'estimated' => function (self $bar) {
                if (!$bar->getMaxSteps()) {
                    throw new LogicException('Unable to display the estimated time if the maximum number of steps is not set.');
                }

                if (!$bar->getProgress()) {
                    $estimated = 0;
                } else {
                    $estimated = round((time() - $bar->getStartTime()) / $bar->getProgress() * $bar->getMaxSteps());
                }

                return Helper::formatTime($estimated);
            },
            'memory' => function (self $bar) {
                return Helper::formatMemory(memory_get_usage(true));
            },
            'current' => function (self $bar) {
                return str_pad($bar->getProgress(), $bar->getStepWidth(), ' ', STR_PAD_LEFT);
            },
            'max' => function (self $bar) {
                return $bar->getMaxSteps();
            },
            'percent' => function (self $bar) {
                return floor($bar->getProgressPercent() * 100);
            },
        ];
    }

    private static function initFormats()
    {
        return [
            'normal' => ' %current%/%max% [%bar%] %percent:3s%%',
            'normal_nomax' => ' %current% [%bar%]',

            'verbose' => ' %current%/%max% [%bar%] %percent:3s%% %elapsed:6s%',
            'verbose_nomax' => ' %current% [%bar%] %elapsed:6s%',

            'very_verbose' => ' %current%/%max% [%bar%] %percent:3s%% %elapsed:6s%/%estimated:-6s%',
            'very_verbose_nomax' => ' %current% [%bar%] %elapsed:6s%',

            'debug' => ' %current%/%max% [%bar%] %percent:3s%% %elapsed:6s%/%estimated:-6s% %memory:6s%',
            'debug_nomax' => ' %current% [%bar%] %elapsed:6s% %memory:6s%',
        ];
    }

    /**
     * @return string
     */
    private function buildLine()
    {
        $regex = "{%([a-z\-_]+)(?:\:([^%]+))?%}i";
        $callback = function ($matches) {
            if ($formatter = $this::getPlaceholderFormatterDefinition($matches[1])) {
                $text = \call_user_func($formatter, $this, $this->output);
            } elseif (isset($this->messages[$matches[1]])) {
                $text = $this->messages[$matches[1]];
            } else {
                return $matches[0];
            }

            if (isset($matches[2])) {
                $text = sprintf('%'.$matches[2], $text);
            }

            return $text;
        };
        $line = preg_replace_callback($regex, $callback, $this->format);

        // gets string length for each sub line with multiline format
        $linesLength = array_map(function ($subLine) {
            return Helper::strlenWithoutDecoration($this->output->getFormatter(), rtrim($subLine, "\r"));
        }, explode("\n", $line));

        $linesWidth = max($linesLength);

        $terminalWidth = $this->terminal->getWidth();
        if ($linesWidth <= $terminalWidth) {
            return $line;
        }

        $this->setBarWidth($this->barWidth - $linesWidth + $terminalWidth);

        return preg_replace_callback($regex, $callback, $this->format);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Helper;

/**
 * Helps outputting debug information when running an external program from a command.
 *
 * An external program can be a Process, an HTTP request, or anything else.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class DebugFormatterHelper extends Helper
{
    private $colors = ['black', 'red', 'green', 'yellow', 'blue', 'magenta', 'cyan', 'white', 'default'];
    private $started = [];
    private $count = -1;

    /**
     * Starts a debug formatting session.
     *
     * @param string $id      The id of the formatting session
     * @param string $message The message to display
     * @param string $prefix  The prefix to use
     *
     * @return string
     */
    public function start($id, $message, $prefix = 'RUN')
    {
        $this->started[$id] = ['border' => ++$this->count % \count($this->colors)];

        return sprintf("%s<bg=blue;fg=white> %s </> <fg=blue>%s</>\n", $this->getBorder($id), $prefix, $message);
    }

    /**
     * Adds progress to a formatting session.
     *
     * @param string $id          The id of the formatting session
     * @param string $buffer      The message to display
     * @param bool   $error       Whether to consider the buffer as error
     * @param string $prefix      The prefix for output
     * @param string $errorPrefix The prefix for error output
     *
     * @return string
     */
    public function progress($id, $buffer, $error = false, $prefix = 'OUT', $errorPrefix = 'ERR')
    {
        $message = '';

        if ($error) {
            if (isset($this->started[$id]['out'])) {
                $message .= "\n";
                unset($this->started[$id]['out']);
            }
            if (!isset($this->started[$id]['err'])) {
                $message .= sprintf('%s<bg=red;fg=white> %s </> ', $this->getBorder($id), $errorPrefix);
                $this->started[$id]['err'] = true;
            }

            $message .= str_replace("\n", sprintf("\n%s<bg=red;fg=white> %s </> ", $this->getBorder($id), $errorPrefix), $buffer);
        } else {
            if (isset($this->started[$id]['err'])) {
                $message .= "\n";
                unset($this->started[$id]['err']);
            }
            if (!isset($this->started[$id]['out'])) {
                $message .= sprintf('%s<bg=green;fg=white> %s </> ', $this->getBorder($id), $prefix);
                $this->started[$id]['out'] = true;
            }

            $message .= str_replace("\n", sprintf("\n%s<bg=green;fg=white> %s </> ", $this->getBorder($id), $prefix), $buffer);
        }

        return $message;
    }

    /**
     * Stops a formatting session.
     *
     * @param string $id         The id of the formatting session
     * @param string $message    The message to display
     * @param bool   $successful Whether to consider the result as success
     * @param string $prefix     The prefix for the end output
     *
     * @return string
     */
    public function stop($id, $message, $successful, $prefix = 'RES')
    {
        $trailingEOL = isset($this->started[$id]['out']) || isset($this->started[$id]['err']) ? "\n" : '';

        if ($successful) {
            return sprintf("%s%s<bg=green;fg=white> %s </> <fg=green>%s</>\n", $trailingEOL, $this->getBorder($id), $prefix, $message);
        }

        $message = sprintf("%s%s<bg=red;fg=white> %s </> <fg=red>%s</>\n", $trailingEOL, $this->getBorder($id), $prefix, $message);

        unset($this->started[$id]['out'], $this->started[$id]['err']);

        return $message;
    }

    /**
     * @param string $id The id of the formatting session
     *
     * @return string
     */
    private function getBorder($id)
    {
        return sprintf('<bg=%s> </>', $this->colors[$this->started[$id]['border']]);
    }

    /**
     * {@inheritdoc}
     */
    public function getName()
    {
        return 'debug_formatter';
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Helper;

use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Exception\InvalidArgumentException;

/**
 * HelperSet represents a set of helpers to be used with a command.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class HelperSet implements \IteratorAggregate
{
    /**
     * @var Helper[]
     */
    private $helpers = [];
    private $command;

    /**
     * @param Helper[] $helpers An array of helper
     */
    public function __construct(array $helpers = [])
    {
        foreach ($helpers as $alias => $helper) {
            $this->set($helper, \is_int($alias) ? null : $alias);
        }
    }

    /**
     * Sets a helper.
     *
     * @param HelperInterface $helper The helper instance
     * @param string          $alias  An alias
     */
    public function set(HelperInterface $helper, $alias = null)
    {
        $this->helpers[$helper->getName()] = $helper;
        if (null !== $alias) {
            $this->helpers[$alias] = $helper;
        }

        $helper->setHelperSet($this);
    }

    /**
     * Returns true if the helper if defined.
     *
     * @param string $name The helper name
     *
     * @return bool true if the helper is defined, false otherwise
     */
    public function has($name)
    {
        return isset($this->helpers[$name]);
    }

    /**
     * Gets a helper value.
     *
     * @param string $name The helper name
     *
     * @return HelperInterface The helper instance
     *
     * @throws InvalidArgumentException if the helper is not defined
     */
    public function get($name)
    {
        if (!$this->has($name)) {
            throw new InvalidArgumentException(sprintf('The helper "%s" is not defined.', $name));
        }

        return $this->helpers[$name];
    }

    public function setCommand(Command $command = null)
    {
        $this->command = $command;
    }

    /**
     * Gets the command associated with this helper set.
     *
     * @return Command A Command instance
     */
    public function getCommand()
    {
        return $this->command;
    }

    /**
     * @return Helper[]
     */
    public function getIterator()
    {
        return new \ArrayIterator($this->helpers);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Helper;

use Symfony\Component\Console\Input\InputAwareInterface;
use Symfony\Component\Console\Input\InputInterface;

/**
 * An implementation of InputAwareInterface for Helpers.
 *
 * @author Wouter J <waldio.webdesign@gmail.com>
 */
abstract class InputAwareHelper extends Helper implements InputAwareInterface
{
    protected $input;

    /**
     * {@inheritdoc}
     */
    public function setInput(InputInterface $input)
    {
        $this->input = $input;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Helper;

use Symfony\Component\Console\Exception\InvalidArgumentException;
use Symfony\Component\Console\Exception\RuntimeException;
use Symfony\Component\Console\Formatter\OutputFormatter;
use Symfony\Component\Console\Formatter\OutputFormatterStyle;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\StreamableInputInterface;
use Symfony\Component\Console\Output\ConsoleOutputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Question\ChoiceQuestion;
use Symfony\Component\Console\Question\Question;
use Symfony\Component\Console\Terminal;

/**
 * The QuestionHelper class provides helpers to interact with the user.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class QuestionHelper extends Helper
{
    private $inputStream;
    private static $shell;
    private static $stty;

    /**
     * Asks a question to the user.
     *
     * @return mixed The user answer
     *
     * @throws RuntimeException If there is no data to read in the input stream
     */
    public function ask(InputInterface $input, OutputInterface $output, Question $question)
    {
        if ($output instanceof ConsoleOutputInterface) {
            $output = $output->getErrorOutput();
        }

        if (!$input->isInteractive()) {
            $default = $question->getDefault();

            if (null === $default) {
                return $default;
            }

            if ($validator = $question->getValidator()) {
                return \call_user_func($question->getValidator(), $default);
            } elseif ($question instanceof ChoiceQuestion) {
                $choices = $question->getChoices();

                if (!$question->isMultiselect()) {
                    return isset($choices[$default]) ? $choices[$default] : $default;
                }

                $default = explode(',', $default);
                foreach ($default as $k => $v) {
                    $v = trim($v);
                    $default[$k] = isset($choices[$v]) ? $choices[$v] : $v;
                }
            }

            return $default;
        }

        if ($input instanceof StreamableInputInterface && $stream = $input->getStream()) {
            $this->inputStream = $stream;
        }

        if (!$question->getValidator()) {
            return $this->doAsk($output, $question);
        }

        $interviewer = function () use ($output, $question) {
            return $this->doAsk($output, $question);
        };

        return $this->validateAttempts($interviewer, $output, $question);
    }

    /**
     * Sets the input stream to read from when interacting with the user.
     *
     * This is mainly useful for testing purpose.
     *
     * @deprecated since version 3.2, to be removed in 4.0. Use
     *             StreamableInputInterface::setStream() instead.
     *
     * @param resource $stream The input stream
     *
     * @throws InvalidArgumentException In case the stream is not a resource
     */
    public function setInputStream($stream)
    {
        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.2 and will be removed in 4.0. Use %s::setStream() instead.', __METHOD__, StreamableInputInterface::class), E_USER_DEPRECATED);

        if (!\is_resource($stream)) {
            throw new InvalidArgumentException('Input stream must be a valid resource.');
        }

        $this->inputStream = $stream;
    }

    /**
     * Returns the helper's input stream.
     *
     * @deprecated since version 3.2, to be removed in 4.0. Use
     *             StreamableInputInterface::getStream() instead.
     *
     * @return resource
     */
    public function getInputStream()
    {
        if (0 === \func_num_args() || func_get_arg(0)) {
            @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.2 and will be removed in 4.0. Use %s::getStream() instead.', __METHOD__, StreamableInputInterface::class), E_USER_DEPRECATED);
        }

        return $this->inputStream;
    }

    /**
     * {@inheritdoc}
     */
    public function getName()
    {
        return 'question';
    }

    /**
     * Prevents usage of stty.
     */
    public static function disableStty()
    {
        self::$stty = false;
    }

    /**
     * Asks the question to the user.
     *
     * @return bool|mixed|string|null
     *
     * @throws RuntimeException In case the fallback is deactivated and the response cannot be hidden
     */
    private function doAsk(OutputInterface $output, Question $question)
    {
        $this->writePrompt($output, $question);

        $inputStream = $this->inputStream ?: STDIN;
        $autocomplete = $question->getAutocompleterValues();

        if (null === $autocomplete || !Terminal::hasSttyAvailable()) {
            $ret = false;
            if ($question->isHidden()) {
                try {
                    $ret = trim($this->getHiddenResponse($output, $inputStream));
                } catch (RuntimeException $e) {
                    if (!$question->isHiddenFallback()) {
                        throw $e;
                    }
                }
            }

            if (false === $ret) {
                $ret = fgets($inputStream, 4096);
                if (false === $ret) {
                    throw new RuntimeException('Aborted.');
                }
                $ret = trim($ret);
            }
        } else {
            $ret = trim($this->autocomplete($output, $question, $inputStream, \is_array($autocomplete) ? $autocomplete : iterator_to_array($autocomplete, false)));
        }

        $ret = \strlen($ret) > 0 ? $ret : $question->getDefault();

        if ($normalizer = $question->getNormalizer()) {
            return $normalizer($ret);
        }

        return $ret;
    }

    /**
     * Outputs the question prompt.
     */
    protected function writePrompt(OutputInterface $output, Question $question)
    {
        $message = $question->getQuestion();

        if ($question instanceof ChoiceQuestion) {
            $maxWidth = max(array_map([$this, 'strlen'], array_keys($question->getChoices())));

            $messages = (array) $question->getQuestion();
            foreach ($question->getChoices() as $key => $value) {
                $width = $maxWidth - $this->strlen($key);
                $messages[] = '  [<info>'.$key.str_repeat(' ', $width).'</info>] '.$value;
            }

            $output->writeln($messages);

            $message = $question->getPrompt();
        }

        $output->write($message);
    }

    /**
     * Outputs an error message.
     */
    protected function writeError(OutputInterface $output, \Exception $error)
    {
        if (null !== $this->getHelperSet() && $this->getHelperSet()->has('formatter')) {
            $message = $this->getHelperSet()->get('formatter')->formatBlock($error->getMessage(), 'error');
        } else {
            $message = '<error>'.$error->getMessage().'</error>';
        }

        $output->writeln($message);
    }

    /**
     * Autocompletes a question.
     *
     * @param resource $inputStream
     *
     * @return string
     */
    private function autocomplete(OutputInterface $output, Question $question, $inputStream, array $autocomplete)
    {
        $fullChoice = '';
        $ret = '';

        $i = 0;
        $ofs = -1;
        $matches = $autocomplete;
        $numMatches = \count($matches);

        $sttyMode = shell_exec('stty -g');

        // Disable icanon (so we can fread each keypress) and echo (we'll do echoing here instead)
        shell_exec('stty -icanon -echo');

        // Add highlighted text style
        $output->getFormatter()->setStyle('hl', new OutputFormatterStyle('black', 'white'));

        // Read a keypress
        while (!feof($inputStream)) {
            $c = fread($inputStream, 1);

            // as opposed to fgets(), fread() returns an empty string when the stream content is empty, not false.
            if (false === $c || ('' === $ret && '' === $c && null === $question->getDefault())) {
                shell_exec(sprintf('stty %s', $sttyMode));
                throw new RuntimeException('Aborted.');
            } elseif ("\177" === $c) { // Backspace Character
                if (0 === $numMatches && 0 !== $i) {
                    --$i;
                    $fullChoice = substr($fullChoice, 0, -1);
                    // Move cursor backwards
                    $output->write("\033[1D");
                }

                if (0 === $i) {
                    $ofs = -1;
                    $matches = $autocomplete;
                    $numMatches = \count($matches);
                } else {
                    $numMatches = 0;
                }

                // Pop the last character off the end of our string
                $ret = substr($ret, 0, $i);
            } elseif ("\033" === $c) {
                // Did we read an escape sequence?
                $c .= fread($inputStream, 2);

                // A = Up Arrow. B = Down Arrow
                if (isset($c[2]) && ('A' === $c[2] || 'B' === $c[2])) {
                    if ('A' === $c[2] && -1 === $ofs) {
                        $ofs = 0;
                    }

                    if (0 === $numMatches) {
                        continue;
                    }

                    $ofs += ('A' === $c[2]) ? -1 : 1;
                    $ofs = ($numMatches + $ofs) % $numMatches;
                }
            } elseif (\ord($c) < 32) {
                if ("\t" === $c || "\n" === $c) {
                    if ($numMatches > 0 && -1 !== $ofs) {
                        $ret = $matches[$ofs];
                        // Echo out remaining chars for current match
                        $remainingCharacters = substr($ret, \strlen(trim($this->mostRecentlyEnteredValue($fullChoice))));
                        $output->write($remainingCharacters);
                        $fullChoice .= $remainingCharacters;
                        $i = \strlen($fullChoice);
                    }

                    if ("\n" === $c) {
                        $output->write($c);
                        break;
                    }

                    $numMatches = 0;
                }

                continue;
            } else {
                if ("\x80" <= $c) {
                    $c .= fread($inputStream, ["\xC0" => 1, "\xD0" => 1, "\xE0" => 2, "\xF0" => 3][$c & "\xF0"]);
                }

                $output->write($c);
                $ret .= $c;
                $fullChoice .= $c;
                ++$i;

                $tempRet = $ret;

                if ($question instanceof ChoiceQuestion && $question->isMultiselect()) {
                    $tempRet = $this->mostRecentlyEnteredValue($fullChoice);
                }

                $numMatches = 0;
                $ofs = 0;

                foreach ($autocomplete as $value) {
                    // If typed characters match the beginning chunk of value (e.g. [AcmeDe]moBundle)
                    if (0 === strpos($value, $tempRet)) {
                        $matches[$numMatches++] = $value;
                    }
                }
            }

            // Erase characters from cursor to end of line
            $output->write("\033[K");

            if ($numMatches > 0 && -1 !== $ofs) {
                // Save cursor position
                $output->write("\0337");
                // Write highlighted text, complete the partially entered response
                $charactersEntered = \strlen(trim($this->mostRecentlyEnteredValue($fullChoice)));
                $output->write('<hl>'.OutputFormatter::escapeTrailingBackslash(substr($matches[$ofs], $charactersEntered)).'</hl>');
                // Restore cursor position
                $output->write("\0338");
            }
        }

        // Reset stty so it behaves normally again
        shell_exec(sprintf('stty %s', $sttyMode));

        return $fullChoice;
    }

    private function mostRecentlyEnteredValue($entered)
    {
        // Determine the most recent value that the user entered
        if (false === strpos($entered, ',')) {
            return $entered;
        }

        $choices = explode(',', $entered);
        if (\strlen($lastChoice = trim($choices[\count($choices) - 1])) > 0) {
            return $lastChoice;
        }

        return $entered;
    }

    /**
     * Gets a hidden response from user.
     *
     * @param OutputInterface $output      An Output instance
     * @param resource        $inputStream The handler resource
     *
     * @return string The answer
     *
     * @throws RuntimeException In case the fallback is deactivated and the response cannot be hidden
     */
    private function getHiddenResponse(OutputInterface $output, $inputStream)
    {
        if ('\\' === \DIRECTORY_SEPARATOR) {
            $exe = __DIR__.'/../Resources/bin/hiddeninput.exe';

            // handle code running from a phar
            if ('phar:' === substr(__FILE__, 0, 5)) {
                $tmpExe = sys_get_temp_dir().'/hiddeninput.exe';
                copy($exe, $tmpExe);
                $exe = $tmpExe;
            }

            $value = rtrim(shell_exec($exe));
            $output->writeln('');

            if (isset($tmpExe)) {
                unlink($tmpExe);
            }

            return $value;
        }

        if (Terminal::hasSttyAvailable()) {
            $sttyMode = shell_exec('stty -g');

            shell_exec('stty -echo');
            $value = fgets($inputStream, 4096);
            shell_exec(sprintf('stty %s', $sttyMode));

            if (false === $value) {
                throw new RuntimeException('Aborted.');
            }

            $value = trim($value);
            $output->writeln('');

            return $value;
        }

        if (false !== $shell = $this->getShell()) {
            $readCmd = 'csh' === $shell ? 'set mypassword = $<' : 'read -r mypassword';
            $command = sprintf("/usr/bin/env %s -c 'stty -echo; %s; stty echo; echo \$mypassword'", $shell, $readCmd);
            $value = rtrim(shell_exec($command));
            $output->writeln('');

            return $value;
        }

        throw new RuntimeException('Unable to hide the response.');
    }

    /**
     * Validates an attempt.
     *
     * @param callable        $interviewer A callable that will ask for a question and return the result
     * @param OutputInterface $output      An Output instance
     * @param Question        $question    A Question instance
     *
     * @return mixed The validated response
     *
     * @throws \Exception In case the max number of attempts has been reached and no valid response has been given
     */
    private function validateAttempts(callable $interviewer, OutputInterface $output, Question $question)
    {
        $error = null;
        $attempts = $question->getMaxAttempts();
        while (null === $attempts || $attempts--) {
            if (null !== $error) {
                $this->writeError($output, $error);
            }

            try {
                return \call_user_func($question->getValidator(), $interviewer());
            } catch (RuntimeException $e) {
                throw $e;
            } catch (\Exception $error) {
            }
        }

        throw $error;
    }

    /**
     * Returns a valid unix shell.
     *
     * @return string|bool The valid shell name, false in case no valid shell is found
     */
    private function getShell()
    {
        if (null !== self::$shell) {
            return self::$shell;
        }

        self::$shell = false;

        if (file_exists('/usr/bin/env')) {
            // handle other OSs with bash/zsh/ksh/csh if available to hide the answer
            $test = "/usr/bin/env %s -c 'echo OK' 2> /dev/null";
            foreach (['bash', 'zsh', 'ksh', 'csh'] as $sh) {
                if ('OK' === rtrim(shell_exec(sprintf($test, $sh)))) {
                    self::$shell = $sh;
                    break;
                }
            }
        }

        return self::$shell;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Helper;

use Symfony\Component\Console\Formatter\OutputFormatterInterface;

/**
 * Helper is the base class for all helper classes.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
abstract class Helper implements HelperInterface
{
    protected $helperSet = null;

    /**
     * {@inheritdoc}
     */
    public function setHelperSet(HelperSet $helperSet = null)
    {
        $this->helperSet = $helperSet;
    }

    /**
     * {@inheritdoc}
     */
    public function getHelperSet()
    {
        return $this->helperSet;
    }

    /**
     * Returns the length of a string, using mb_strwidth if it is available.
     *
     * @param string $string The string to check its length
     *
     * @return int The length of the string
     */
    public static function strlen($string)
    {
        if (false === $encoding = mb_detect_encoding($string, null, true)) {
            return \strlen($string);
        }

        return mb_strwidth($string, $encoding);
    }

    /**
     * Returns the subset of a string, using mb_substr if it is available.
     *
     * @param string   $string String to subset
     * @param int      $from   Start offset
     * @param int|null $length Length to read
     *
     * @return string The string subset
     */
    public static function substr($string, $from, $length = null)
    {
        if (false === $encoding = mb_detect_encoding($string, null, true)) {
            return substr($string, $from, $length);
        }

        return mb_substr($string, $from, $length, $encoding);
    }

    public static function formatTime($secs)
    {
        static $timeFormats = [
            [0, '< 1 sec'],
            [1, '1 sec'],
            [2, 'secs', 1],
            [60, '1 min'],
            [120, 'mins', 60],
            [3600, '1 hr'],
            [7200, 'hrs', 3600],
            [86400, '1 day'],
            [172800, 'days', 86400],
        ];

        foreach ($timeFormats as $index => $format) {
            if ($secs >= $format[0]) {
                if ((isset($timeFormats[$index + 1]) && $secs < $timeFormats[$index + 1][0])
                    || $index == \count($timeFormats) - 1
                ) {
                    if (2 == \count($format)) {
                        return $format[1];
                    }

                    return floor($secs / $format[2]).' '.$format[1];
                }
            }
        }
    }

    public static function formatMemory($memory)
    {
        if ($memory >= 1024 * 1024 * 1024) {
            return sprintf('%.1f GiB', $memory / 1024 / 1024 / 1024);
        }

        if ($memory >= 1024 * 1024) {
            return sprintf('%.1f MiB', $memory / 1024 / 1024);
        }

        if ($memory >= 1024) {
            return sprintf('%d KiB', $memory / 1024);
        }

        return sprintf('%d B', $memory);
    }

    public static function strlenWithoutDecoration(OutputFormatterInterface $formatter, $string)
    {
        return self::strlen(self::removeDecoration($formatter, $string));
    }

    public static function removeDecoration(OutputFormatterInterface $formatter, $string)
    {
        $isDecorated = $formatter->isDecorated();
        $formatter->setDecorated(false);
        // remove <...> formatting
        $string = $formatter->format($string);
        // remove already formatted characters
        $string = preg_replace("/\033\[[^m]*m/", '', $string);
        $formatter->setDecorated($isDecorated);

        return $string;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Helper;

use Symfony\Component\Console\Exception\InvalidArgumentException;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * Provides helpers to display a table.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Ð¡Ð°ÑˆÐ° Ð¡Ñ‚Ð°Ð¼ÐµÐ½ÐºÐ¾Ð²Ð¸Ñ› <umpirsky@gmail.com>
 * @author Abdellatif Ait boudad <a.aitboudad@gmail.com>
 * @author Max Grigorian <maxakawizard@gmail.com>
 */
class Table
{
    /**
     * Table headers.
     */
    private $headers = [];

    /**
     * Table rows.
     */
    private $rows = [];

    /**
     * Column widths cache.
     */
    private $effectiveColumnWidths = [];

    /**
     * Number of columns cache.
     *
     * @var int
     */
    private $numberOfColumns;

    /**
     * @var OutputInterface
     */
    private $output;

    /**
     * @var TableStyle
     */
    private $style;

    /**
     * @var array
     */
    private $columnStyles = [];

    /**
     * User set column widths.
     *
     * @var array
     */
    private $columnWidths = [];

    private static $styles;

    public function __construct(OutputInterface $output)
    {
        $this->output = $output;

        if (!self::$styles) {
            self::$styles = self::initStyles();
        }

        $this->setStyle('default');
    }

    /**
     * Sets a style definition.
     *
     * @param string     $name  The style name
     * @param TableStyle $style A TableStyle instance
     */
    public static function setStyleDefinition($name, TableStyle $style)
    {
        if (!self::$styles) {
            self::$styles = self::initStyles();
        }

        self::$styles[$name] = $style;
    }

    /**
     * Gets a style definition by name.
     *
     * @param string $name The style name
     *
     * @return TableStyle
     */
    public static function getStyleDefinition($name)
    {
        if (!self::$styles) {
            self::$styles = self::initStyles();
        }

        if (isset(self::$styles[$name])) {
            return self::$styles[$name];
        }

        throw new InvalidArgumentException(sprintf('Style "%s" is not defined.', $name));
    }

    /**
     * Sets table style.
     *
     * @param TableStyle|string $name The style name or a TableStyle instance
     *
     * @return $this
     */
    public function setStyle($name)
    {
        $this->style = $this->resolveStyle($name);

        return $this;
    }

    /**
     * Gets the current table style.
     *
     * @return TableStyle
     */
    public function getStyle()
    {
        return $this->style;
    }

    /**
     * Sets table column style.
     *
     * @param int               $columnIndex Column index
     * @param TableStyle|string $name        The style name or a TableStyle instance
     *
     * @return $this
     */
    public function setColumnStyle($columnIndex, $name)
    {
        $columnIndex = (int) $columnIndex;

        $this->columnStyles[$columnIndex] = $this->resolveStyle($name);

        return $this;
    }

    /**
     * Gets the current style for a column.
     *
     * If style was not set, it returns the global table style.
     *
     * @param int $columnIndex Column index
     *
     * @return TableStyle
     */
    public function getColumnStyle($columnIndex)
    {
        if (isset($this->columnStyles[$columnIndex])) {
            return $this->columnStyles[$columnIndex];
        }

        return $this->getStyle();
    }

    /**
     * Sets the minimum width of a column.
     *
     * @param int $columnIndex Column index
     * @param int $width       Minimum column width in characters
     *
     * @return $this
     */
    public function setColumnWidth($columnIndex, $width)
    {
        $this->columnWidths[(int) $columnIndex] = (int) $width;

        return $this;
    }

    /**
     * Sets the minimum width of all columns.
     *
     * @return $this
     */
    public function setColumnWidths(array $widths)
    {
        $this->columnWidths = [];
        foreach ($widths as $index => $width) {
            $this->setColumnWidth($index, $width);
        }

        return $this;
    }

    public function setHeaders(array $headers)
    {
        $headers = array_values($headers);
        if (!empty($headers) && !\is_array($headers[0])) {
            $headers = [$headers];
        }

        $this->headers = $headers;

        return $this;
    }

    public function setRows(array $rows)
    {
        $this->rows = [];

        return $this->addRows($rows);
    }

    public function addRows(array $rows)
    {
        foreach ($rows as $row) {
            $this->addRow($row);
        }

        return $this;
    }

    public function addRow($row)
    {
        if ($row instanceof TableSeparator) {
            $this->rows[] = $row;

            return $this;
        }

        if (!\is_array($row)) {
            throw new InvalidArgumentException('A row must be an array or a TableSeparator instance.');
        }

        $this->rows[] = array_values($row);

        return $this;
    }

    public function setRow($column, array $row)
    {
        $this->rows[$column] = $row;

        return $this;
    }

    /**
     * Renders table to output.
     *
     * Example:
     *
     *     +---------------+-----------------------+------------------+
     *     | ISBN          | Title                 | Author           |
     *     +---------------+-----------------------+------------------+
     *     | 99921-58-10-7 | Divine Comedy         | Dante Alighieri  |
     *     | 9971-5-0210-0 | A Tale of Two Cities  | Charles Dickens  |
     *     | 960-425-059-0 | The Lord of the Rings | J. R. R. Tolkien |
     *     +---------------+-----------------------+------------------+
     */
    public function render()
    {
        $this->calculateNumberOfColumns();
        $rows = $this->buildTableRows($this->rows);
        $headers = $this->buildTableRows($this->headers);

        $this->calculateColumnsWidth(array_merge($headers, $rows));

        $this->renderRowSeparator();
        if (!empty($headers)) {
            foreach ($headers as $header) {
                $this->renderRow($header, $this->style->getCellHeaderFormat());
                $this->renderRowSeparator();
            }
        }
        foreach ($rows as $row) {
            if ($row instanceof TableSeparator) {
                $this->renderRowSeparator();
            } else {
                $this->renderRow($row, $this->style->getCellRowFormat());
            }
        }
        if (!empty($rows)) {
            $this->renderRowSeparator();
        }

        $this->cleanup();
    }

    /**
     * Renders horizontal header separator.
     *
     * Example:
     *
     *     +-----+-----------+-------+
     */
    private function renderRowSeparator()
    {
        if (0 === $count = $this->numberOfColumns) {
            return;
        }

        if (!$this->style->getHorizontalBorderChar() && !$this->style->getCrossingChar()) {
            return;
        }

        $markup = $this->style->getCrossingChar();
        for ($column = 0; $column < $count; ++$column) {
            $markup .= str_repeat($this->style->getHorizontalBorderChar(), $this->effectiveColumnWidths[$column]).$this->style->getCrossingChar();
        }

        $this->output->writeln(sprintf($this->style->getBorderFormat(), $markup));
    }

    /**
     * Renders vertical column separator.
     */
    private function renderColumnSeparator()
    {
        return sprintf($this->style->getBorderFormat(), $this->style->getVerticalBorderChar());
    }

    /**
     * Renders table row.
     *
     * Example:
     *
     *     | 9971-5-0210-0 | A Tale of Two Cities  | Charles Dickens  |
     *
     * @param string $cellFormat
     */
    private function renderRow(array $row, $cellFormat)
    {
        if (empty($row)) {
            return;
        }

        $rowContent = $this->renderColumnSeparator();
        foreach ($this->getRowColumns($row) as $column) {
            $rowContent .= $this->renderCell($row, $column, $cellFormat);
            $rowContent .= $this->renderColumnSeparator();
        }
        $this->output->writeln($rowContent);
    }

    /**
     * Renders table cell with padding.
     *
     * @param int    $column
     * @param string $cellFormat
     */
    private function renderCell(array $row, $column, $cellFormat)
    {
        $cell = isset($row[$column]) ? $row[$column] : '';
        $width = $this->effectiveColumnWidths[$column];
        if ($cell instanceof TableCell && $cell->getColspan() > 1) {
            // add the width of the following columns(numbers of colspan).
            foreach (range($column + 1, $column + $cell->getColspan() - 1) as $nextColumn) {
                $width += $this->getColumnSeparatorWidth() + $this->effectiveColumnWidths[$nextColumn];
            }
        }

        // str_pad won't work properly with multi-byte strings, we need to fix the padding
        if (false !== $encoding = mb_detect_encoding($cell, null, true)) {
            $width += \strlen($cell) - mb_strwidth($cell, $encoding);
        }

        $style = $this->getColumnStyle($column);

        if ($cell instanceof TableSeparator) {
            return sprintf($style->getBorderFormat(), str_repeat($style->getHorizontalBorderChar(), $width));
        }

        $width += Helper::strlen($cell) - Helper::strlenWithoutDecoration($this->output->getFormatter(), $cell);
        $content = sprintf($style->getCellRowContentFormat(), $cell);

        return sprintf($cellFormat, str_pad($content, $width, $style->getPaddingChar(), $style->getPadType()));
    }

    /**
     * Calculate number of columns for this table.
     */
    private function calculateNumberOfColumns()
    {
        if (null !== $this->numberOfColumns) {
            return;
        }

        $columns = [0];
        foreach (array_merge($this->headers, $this->rows) as $row) {
            if ($row instanceof TableSeparator) {
                continue;
            }

            $columns[] = $this->getNumberOfColumns($row);
        }

        $this->numberOfColumns = max($columns);
    }

    private function buildTableRows($rows)
    {
        $unmergedRows = [];
        for ($rowKey = 0; $rowKey < \count($rows); ++$rowKey) {
            $rows = $this->fillNextRows($rows, $rowKey);

            // Remove any new line breaks and replace it with a new line
            foreach ($rows[$rowKey] as $column => $cell) {
                if (!strstr($cell, "\n")) {
                    continue;
                }
                $lines = explode("\n", str_replace("\n", "<fg=default;bg=default>\n</>", $cell));
                foreach ($lines as $lineKey => $line) {
                    if ($cell instanceof TableCell) {
                        $line = new TableCell($line, ['colspan' => $cell->getColspan()]);
                    }
                    if (0 === $lineKey) {
                        $rows[$rowKey][$column] = $line;
                    } else {
                        $unmergedRows[$rowKey][$lineKey][$column] = $line;
                    }
                }
            }
        }

        $tableRows = [];
        foreach ($rows as $rowKey => $row) {
            $tableRows[] = $this->fillCells($row);
            if (isset($unmergedRows[$rowKey])) {
                $tableRows = array_merge($tableRows, $unmergedRows[$rowKey]);
            }
        }

        return $tableRows;
    }

    /**
     * fill rows that contains rowspan > 1.
     *
     * @param int $line
     *
     * @return array
     *
     * @throws InvalidArgumentException
     */
    private function fillNextRows(array $rows, $line)
    {
        $unmergedRows = [];
        foreach ($rows[$line] as $column => $cell) {
            if (null !== $cell && !$cell instanceof TableCell && !is_scalar($cell) && !(\is_object($cell) && method_exists($cell, '__toString'))) {
                throw new InvalidArgumentException(sprintf('A cell must be a TableCell, a scalar or an object implementing __toString, %s given.', \gettype($cell)));
            }
            if ($cell instanceof TableCell && $cell->getRowspan() > 1) {
                $nbLines = $cell->getRowspan() - 1;
                $lines = [$cell];
                if (strstr($cell, "\n")) {
                    $lines = explode("\n", str_replace("\n", "<fg=default;bg=default>\n</>", $cell));
                    $nbLines = \count($lines) > $nbLines ? substr_count($cell, "\n") : $nbLines;

                    $rows[$line][$column] = new TableCell($lines[0], ['colspan' => $cell->getColspan()]);
                    unset($lines[0]);
                }

                // create a two dimensional array (rowspan x colspan)
                $unmergedRows = array_replace_recursive(array_fill($line + 1, $nbLines, []), $unmergedRows);
                foreach ($unmergedRows as $unmergedRowKey => $unmergedRow) {
                    $value = isset($lines[$unmergedRowKey - $line]) ? $lines[$unmergedRowKey - $line] : '';
                    $unmergedRows[$unmergedRowKey][$column] = new TableCell($value, ['colspan' => $cell->getColspan()]);
                    if ($nbLines === $unmergedRowKey - $line) {
                        break;
                    }
                }
            }
        }

        foreach ($unmergedRows as $unmergedRowKey => $unmergedRow) {
            // we need to know if $unmergedRow will be merged or inserted into $rows
            if (isset($rows[$unmergedRowKey]) && \is_array($rows[$unmergedRowKey]) && ($this->getNumberOfColumns($rows[$unmergedRowKey]) + $this->getNumberOfColumns($unmergedRows[$unmergedRowKey]) <= $this->numberOfColumns)) {
                foreach ($unmergedRow as $cellKey => $cell) {
                    // insert cell into row at cellKey position
                    array_splice($rows[$unmergedRowKey], $cellKey, 0, [$cell]);
                }
            } else {
                $row = $this->copyRow($rows, $unmergedRowKey - 1);
                foreach ($unmergedRow as $column => $cell) {
                    if (!empty($cell)) {
                        $row[$column] = $unmergedRow[$column];
                    }
                }
                array_splice($rows, $unmergedRowKey, 0, [$row]);
            }
        }

        return $rows;
    }

    /**
     * fill cells for a row that contains colspan > 1.
     *
     * @return array
     */
    private function fillCells($row)
    {
        $newRow = [];
        foreach ($row as $column => $cell) {
            $newRow[] = $cell;
            if ($cell instanceof TableCell && $cell->getColspan() > 1) {
                foreach (range($column + 1, $column + $cell->getColspan() - 1) as $position) {
                    // insert empty value at column position
                    $newRow[] = '';
                }
            }
        }

        return $newRow ?: $row;
    }

    /**
     * @param int $line
     *
     * @return array
     */
    private function copyRow(array $rows, $line)
    {
        $row = $rows[$line];
        foreach ($row as $cellKey => $cellValue) {
            $row[$cellKey] = '';
            if ($cellValue instanceof TableCell) {
                $row[$cellKey] = new TableCell('', ['colspan' => $cellValue->getColspan()]);
            }
        }

        return $row;
    }

    /**
     * Gets number of columns by row.
     *
     * @return int
     */
    private function getNumberOfColumns(array $row)
    {
        $columns = \count($row);
        foreach ($row as $column) {
            $columns += $column instanceof TableCell ? ($column->getColspan() - 1) : 0;
        }

        return $columns;
    }

    /**
     * Gets list of columns for the given row.
     *
     * @return array
     */
    private function getRowColumns(array $row)
    {
        $columns = range(0, $this->numberOfColumns - 1);
        foreach ($row as $cellKey => $cell) {
            if ($cell instanceof TableCell && $cell->getColspan() > 1) {
                // exclude grouped columns.
                $columns = array_diff($columns, range($cellKey + 1, $cellKey + $cell->getColspan() - 1));
            }
        }

        return $columns;
    }

    /**
     * Calculates columns widths.
     */
    private function calculateColumnsWidth(array $rows)
    {
        for ($column = 0; $column < $this->numberOfColumns; ++$column) {
            $lengths = [];
            foreach ($rows as $row) {
                if ($row instanceof TableSeparator) {
                    continue;
                }

                foreach ($row as $i => $cell) {
                    if ($cell instanceof TableCell) {
                        $textContent = Helper::removeDecoration($this->output->getFormatter(), $cell);
                        $textLength = Helper::strlen($textContent);
                        if ($textLength > 0) {
                            $contentColumns = str_split($textContent, ceil($textLength / $cell->getColspan()));
                            foreach ($contentColumns as $position => $content) {
                                $row[$i + $position] = $content;
                            }
                        }
                    }
                }

                $lengths[] = $this->getCellWidth($row, $column);
            }

            $this->effectiveColumnWidths[$column] = max($lengths) + Helper::strlen($this->style->getCellRowContentFormat()) - 2;
        }
    }

    /**
     * Gets column width.
     *
     * @return int
     */
    private function getColumnSeparatorWidth()
    {
        return Helper::strlen(sprintf($this->style->getBorderFormat(), $this->style->getVerticalBorderChar()));
    }

    /**
     * Gets cell width.
     *
     * @param int $column
     *
     * @return int
     */
    private function getCellWidth(array $row, $column)
    {
        $cellWidth = 0;

        if (isset($row[$column])) {
            $cell = $row[$column];
            $cellWidth = Helper::strlenWithoutDecoration($this->output->getFormatter(), $cell);
        }

        $columnWidth = isset($this->columnWidths[$column]) ? $this->columnWidths[$column] : 0;

        return max($cellWidth, $columnWidth);
    }

    /**
     * Called after rendering to cleanup cache data.
     */
    private function cleanup()
    {
        $this->effectiveColumnWidths = [];
        $this->numberOfColumns = null;
    }

    private static function initStyles()
    {
        $borderless = new TableStyle();
        $borderless
            ->setHorizontalBorderChar('=')
            ->setVerticalBorderChar(' ')
            ->setCrossingChar(' ')
        ;

        $compact = new TableStyle();
        $compact
            ->setHorizontalBorderChar('')
            ->setVerticalBorderChar(' ')
            ->setCrossingChar('')
            ->setCellRowContentFormat('%s')
        ;

        $styleGuide = new TableStyle();
        $styleGuide
            ->setHorizontalBorderChar('-')
            ->setVerticalBorderChar(' ')
            ->setCrossingChar(' ')
            ->setCellHeaderFormat('%s')
        ;

        return [
            'default' => new TableStyle(),
            'borderless' => $borderless,
            'compact' => $compact,
            'symfony-style-guide' => $styleGuide,
        ];
    }

    private function resolveStyle($name)
    {
        if ($name instanceof TableStyle) {
            return $name;
        }

        if (isset(self::$styles[$name])) {
            return self::$styles[$name];
        }

        throw new InvalidArgumentException(sprintf('Style "%s" is not defined.', $name));
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Helper;

use Symfony\Component\Console\Exception\InvalidArgumentException;
use Symfony\Component\Console\Exception\LogicException;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * @author Kevin Bond <kevinbond@gmail.com>
 */
class ProgressIndicator
{
    private $output;
    private $startTime;
    private $format;
    private $message;
    private $indicatorValues;
    private $indicatorCurrent;
    private $indicatorChangeInterval;
    private $indicatorUpdateTime;
    private $started = false;

    private static $formatters;
    private static $formats;

    /**
     * @param string|null $format                  Indicator format
     * @param int         $indicatorChangeInterval Change interval in milliseconds
     * @param array|null  $indicatorValues         Animated indicator characters
     */
    public function __construct(OutputInterface $output, $format = null, $indicatorChangeInterval = 100, $indicatorValues = null)
    {
        $this->output = $output;

        if (null === $format) {
            $format = $this->determineBestFormat();
        }

        if (null === $indicatorValues) {
            $indicatorValues = ['-', '\\', '|', '/'];
        }

        $indicatorValues = array_values($indicatorValues);

        if (2 > \count($indicatorValues)) {
            throw new InvalidArgumentException('Must have at least 2 indicator value characters.');
        }

        $this->format = self::getFormatDefinition($format);
        $this->indicatorChangeInterval = $indicatorChangeInterval;
        $this->indicatorValues = $indicatorValues;
        $this->startTime = time();
    }

    /**
     * Sets the current indicator message.
     *
     * @param string|null $message
     */
    public function setMessage($message)
    {
        $this->message = $message;

        $this->display();
    }

    /**
     * Starts the indicator output.
     *
     * @param $message
     */
    public function start($message)
    {
        if ($this->started) {
            throw new LogicException('Progress indicator already started.');
        }

        $this->message = $message;
        $this->started = true;
        $this->startTime = time();
        $this->indicatorUpdateTime = $this->getCurrentTimeInMilliseconds() + $this->indicatorChangeInterval;
        $this->indicatorCurrent = 0;

        $this->display();
    }

    /**
     * Advances the indicator.
     */
    public function advance()
    {
        if (!$this->started) {
            throw new LogicException('Progress indicator has not yet been started.');
        }

        if (!$this->output->isDecorated()) {
            return;
        }

        $currentTime = $this->getCurrentTimeInMilliseconds();

        if ($currentTime < $this->indicatorUpdateTime) {
            return;
        }

        $this->indicatorUpdateTime = $currentTime + $this->indicatorChangeInterval;
        ++$this->indicatorCurrent;

        $this->display();
    }

    /**
     * Finish the indicator with message.
     *
     * @param $message
     */
    public function finish($message)
    {
        if (!$this->started) {
            throw new LogicException('Progress indicator has not yet been started.');
        }

        $this->message = $message;
        $this->display();
        $this->output->writeln('');
        $this->started = false;
    }

    /**
     * Gets the format for a given name.
     *
     * @param string $name The format name
     *
     * @return string|null A format string
     */
    public static function getFormatDefinition($name)
    {
        if (!self::$formats) {
            self::$formats = self::initFormats();
        }

        return isset(self::$formats[$name]) ? self::$formats[$name] : null;
    }

    /**
     * Sets a placeholder formatter for a given name.
     *
     * This method also allow you to override an existing placeholder.
     *
     * @param string   $name     The placeholder name (including the delimiter char like %)
     * @param callable $callable A PHP callable
     */
    public static function setPlaceholderFormatterDefinition($name, $callable)
    {
        if (!self::$formatters) {
            self::$formatters = self::initPlaceholderFormatters();
        }

        self::$formatters[$name] = $callable;
    }

    /**
     * Gets the placeholder formatter for a given name.
     *
     * @param string $name The placeholder name (including the delimiter char like %)
     *
     * @return callable|null A PHP callable
     */
    public static function getPlaceholderFormatterDefinition($name)
    {
        if (!self::$formatters) {
            self::$formatters = self::initPlaceholderFormatters();
        }

        return isset(self::$formatters[$name]) ? self::$formatters[$name] : null;
    }

    private function display()
    {
        if (OutputInterface::VERBOSITY_QUIET === $this->output->getVerbosity()) {
            return;
        }

        $self = $this;

        $this->overwrite(preg_replace_callback("{%([a-z\-_]+)(?:\:([^%]+))?%}i", function ($matches) use ($self) {
            if ($formatter = $self::getPlaceholderFormatterDefinition($matches[1])) {
                return \call_user_func($formatter, $self);
            }

            return $matches[0];
        }, $this->format));
    }

    private function determineBestFormat()
    {
        switch ($this->output->getVerbosity()) {
            // OutputInterface::VERBOSITY_QUIET: display is disabled anyway
            case OutputInterface::VERBOSITY_VERBOSE:
                return $this->output->isDecorated() ? 'verbose' : 'verbose_no_ansi';
            case OutputInterface::VERBOSITY_VERY_VERBOSE:
            case OutputInterface::VERBOSITY_DEBUG:
                return $this->output->isDecorated() ? 'very_verbose' : 'very_verbose_no_ansi';
            default:
                return $this->output->isDecorated() ? 'normal' : 'normal_no_ansi';
        }
    }

    /**
     * Overwrites a previous message to the output.
     *
     * @param string $message The message
     */
    private function overwrite($message)
    {
        if ($this->output->isDecorated()) {
            $this->output->write("\x0D\x1B[2K");
            $this->output->write($message);
        } else {
            $this->output->writeln($message);
        }
    }

    private function getCurrentTimeInMilliseconds()
    {
        return round(microtime(true) * 1000);
    }

    private static function initPlaceholderFormatters()
    {
        return [
            'indicator' => function (self $indicator) {
                return $indicator->indicatorValues[$indicator->indicatorCurrent % \count($indicator->indicatorValues)];
            },
            'message' => function (self $indicator) {
                return $indicator->message;
            },
            'elapsed' => function (self $indicator) {
                return Helper::formatTime(time() - $indicator->startTime);
            },
            'memory' => function () {
                return Helper::formatMemory(memory_get_usage(true));
            },
        ];
    }

    private static function initFormats()
    {
        return [
            'normal' => ' %indicator% %message%',
            'normal_no_ansi' => ' %message%',

            'verbose' => ' %indicator% %message% (%elapsed:6s%)',
            'verbose_no_ansi' => ' %message% (%elapsed:6s%)',

            'very_verbose' => ' %indicator% %message% (%elapsed:6s%, %memory:6s%)',
            'very_verbose_no_ansi' => ' %message% (%elapsed:6s%, %memory:6s%)',
        ];
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Helper;

use Symfony\Component\Console\Descriptor\DescriptorInterface;
use Symfony\Component\Console\Descriptor\JsonDescriptor;
use Symfony\Component\Console\Descriptor\MarkdownDescriptor;
use Symfony\Component\Console\Descriptor\TextDescriptor;
use Symfony\Component\Console\Descriptor\XmlDescriptor;
use Symfony\Component\Console\Exception\InvalidArgumentException;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * This class adds helper method to describe objects in various formats.
 *
 * @author Jean-FranÃ§ois Simon <contact@jfsimon.fr>
 */
class DescriptorHelper extends Helper
{
    /**
     * @var DescriptorInterface[]
     */
    private $descriptors = [];

    public function __construct()
    {
        $this
            ->register('txt', new TextDescriptor())
            ->register('xml', new XmlDescriptor())
            ->register('json', new JsonDescriptor())
            ->register('md', new MarkdownDescriptor())
        ;
    }

    /**
     * Describes an object if supported.
     *
     * Available options are:
     * * format: string, the output format name
     * * raw_text: boolean, sets output type as raw
     *
     * @param object $object
     *
     * @throws InvalidArgumentException when the given format is not supported
     */
    public function describe(OutputInterface $output, $object, array $options = [])
    {
        $options = array_merge([
            'raw_text' => false,
            'format' => 'txt',
        ], $options);

        if (!isset($this->descriptors[$options['format']])) {
            throw new InvalidArgumentException(sprintf('Unsupported format "%s".', $options['format']));
        }

        $descriptor = $this->descriptors[$options['format']];
        $descriptor->describe($output, $object, $options);
    }

    /**
     * Registers a descriptor.
     *
     * @param string $format
     *
     * @return $this
     */
    public function register($format, DescriptorInterface $descriptor)
    {
        $this->descriptors[$format] = $descriptor;

        return $this;
    }

    /**
     * {@inheritdoc}
     */
    public function getName()
    {
        return 'descriptor';
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\DependencyInjection;

use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\CommandLoader\ContainerCommandLoader;
use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
use Symfony\Component\DependencyInjection\Compiler\ServiceLocatorTagPass;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
use Symfony\Component\DependencyInjection\TypedReference;

/**
 * Registers console commands.
 *
 * @author GrÃ©goire Pineau <lyrixx@lyrixx.info>
 */
class AddConsoleCommandPass implements CompilerPassInterface
{
    private $commandLoaderServiceId;
    private $commandTag;

    public function __construct($commandLoaderServiceId = 'console.command_loader', $commandTag = 'console.command')
    {
        $this->commandLoaderServiceId = $commandLoaderServiceId;
        $this->commandTag = $commandTag;
    }

    public function process(ContainerBuilder $container)
    {
        $commandServices = $container->findTaggedServiceIds($this->commandTag, true);
        $lazyCommandMap = [];
        $lazyCommandRefs = [];
        $serviceIds = [];
        $lazyServiceIds = [];

        foreach ($commandServices as $id => $tags) {
            $definition = $container->getDefinition($id);
            $class = $container->getParameterBag()->resolveValue($definition->getClass());

            $commandId = 'console.command.'.strtolower(str_replace('\\', '_', $class));

            if (isset($tags[0]['command'])) {
                $commandName = $tags[0]['command'];
            } else {
                if (!$r = $container->getReflectionClass($class)) {
                    throw new InvalidArgumentException(sprintf('Class "%s" used for service "%s" cannot be found.', $class, $id));
                }
                if (!$r->isSubclassOf(Command::class)) {
                    throw new InvalidArgumentException(sprintf('The service "%s" tagged "%s" must be a subclass of "%s".', $id, $this->commandTag, Command::class));
                }
                $commandName = $class::getDefaultName();
            }

            if (null === $commandName) {
                if (isset($serviceIds[$commandId]) || $container->hasAlias($commandId)) {
                    $commandId = $commandId.'_'.$id;
                }
                if (!$definition->isPublic() || $definition->isPrivate()) {
                    $container->setAlias($commandId, $id)->setPublic(true);
                    $id = $commandId;
                }
                $serviceIds[$commandId] = $id;

                continue;
            }

            $serviceIds[$commandId] = $id;
            $lazyServiceIds[$id] = true;
            unset($tags[0]);
            $lazyCommandMap[$commandName] = $id;
            $lazyCommandRefs[$id] = new TypedReference($id, $class);
            $aliases = [];

            foreach ($tags as $tag) {
                if (isset($tag['command'])) {
                    $aliases[] = $tag['command'];
                    $lazyCommandMap[$tag['command']] = $id;
                }
            }

            $definition->addMethodCall('setName', [$commandName]);

            if ($aliases) {
                $definition->addMethodCall('setAliases', [$aliases]);
            }
        }

        $container
            ->register($this->commandLoaderServiceId, ContainerCommandLoader::class)
            ->setPublic(true)
            ->setArguments([ServiceLocatorTagPass::register($container, $lazyCommandRefs), $lazyCommandMap]);

        $container->setParameter('console.command.ids', $serviceIds);
        $container->setParameter('console.lazy_command.ids', $lazyServiceIds);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Exception;

/**
 * @author JÃ©rÃ´me Tamarelle <jerome@tamarelle.net>
 */
class LogicException extends \LogicException implements ExceptionInterface
{
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Exception;

/**
 * Represents an incorrect option name typed in the console.
 *
 * @author JÃ©rÃ´me Tamarelle <jerome@tamarelle.net>
 */
class InvalidOptionException extends \InvalidArgumentException implements ExceptionInterface
{
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Exception;

/**
 * ExceptionInterface.
 *
 * @author JÃ©rÃ´me Tamarelle <jerome@tamarelle.net>
 */
interface ExceptionInterface
{
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Exception;

/**
 * @author JÃ©rÃ´me Tamarelle <jerome@tamarelle.net>
 */
class RuntimeException extends \RuntimeException implements ExceptionInterface
{
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Exception;

/**
 * @author JÃ©rÃ´me Tamarelle <jerome@tamarelle.net>
 */
class InvalidArgumentException extends \InvalidArgumentException implements ExceptionInterface
{
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Exception;

/**
 * Represents an incorrect command name typed in the console.
 *
 * @author JÃ©rÃ´me Tamarelle <jerome@tamarelle.net>
 */
class CommandNotFoundException extends \InvalidArgumentException implements ExceptionInterface
{
    private $alternatives;

    /**
     * @param string     $message      Exception message to throw
     * @param array      $alternatives List of similar defined names
     * @param int        $code         Exception code
     * @param \Exception $previous     Previous exception used for the exception chaining
     */
    public function __construct($message, array $alternatives = [], $code = 0, \Exception $previous = null)
    {
        parent::__construct($message, $code, $previous);

        $this->alternatives = $alternatives;
    }

    /**
     * @return array A list of similar defined names
     */
    public function getAlternatives()
    {
        return $this->alternatives;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Event;

use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * Allows to manipulate the exit code of a command after its execution.
 *
 * @author Francesco Levorato <git@flevour.net>
 */
class ConsoleTerminateEvent extends ConsoleEvent
{
    /**
     * The exit code of the command.
     *
     * @var int
     */
    private $exitCode;

    public function __construct(Command $command, InputInterface $input, OutputInterface $output, $exitCode)
    {
        parent::__construct($command, $input, $output);

        $this->setExitCode($exitCode);
    }

    /**
     * Sets the exit code.
     *
     * @param int $exitCode The command exit code
     */
    public function setExitCode($exitCode)
    {
        $this->exitCode = (int) $exitCode;
    }

    /**
     * Gets the exit code.
     *
     * @return int The command exit code
     */
    public function getExitCode()
    {
        return $this->exitCode;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Event;

use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Exception\InvalidArgumentException;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * Allows to handle throwables thrown while running a command.
 *
 * @author Wouter de Jong <wouter@wouterj.nl>
 */
final class ConsoleErrorEvent extends ConsoleEvent
{
    private $error;
    private $exitCode;

    public function __construct(InputInterface $input, OutputInterface $output, $error, Command $command = null)
    {
        parent::__construct($command, $input, $output);

        $this->setError($error);
    }

    /**
     * Returns the thrown error/exception.
     *
     * @return \Throwable
     */
    public function getError()
    {
        return $this->error;
    }

    /**
     * Replaces the thrown error/exception.
     *
     * @param \Throwable $error
     */
    public function setError($error)
    {
        if (!$error instanceof \Throwable && !$error instanceof \Exception) {
            throw new InvalidArgumentException(sprintf('The error passed to ConsoleErrorEvent must be an instance of \Throwable or \Exception, "%s" was passed instead.', \is_object($error) ? \get_class($error) : \gettype($error)));
        }

        $this->error = $error;
    }

    /**
     * Sets the exit code.
     *
     * @param int $exitCode The command exit code
     */
    public function setExitCode($exitCode)
    {
        $this->exitCode = (int) $exitCode;

        $r = new \ReflectionProperty($this->error, 'code');
        $r->setAccessible(true);
        $r->setValue($this->error, $this->exitCode);
    }

    /**
     * Gets the exit code.
     *
     * @return int The command exit code
     */
    public function getExitCode()
    {
        return null !== $this->exitCode ? $this->exitCode : (\is_int($this->error->getCode()) && 0 !== $this->error->getCode() ? $this->error->getCode() : 1);
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Event;

/**
 * Allows to do things before the command is executed, like skipping the command or changing the input.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ConsoleCommandEvent extends ConsoleEvent
{
    /**
     * The return code for skipped commands, this will also be passed into the terminate event.
     */
    const RETURN_CODE_DISABLED = 113;

    /**
     * Indicates if the command should be run or skipped.
     */
    private $commandShouldRun = true;

    /**
     * Disables the command, so it won't be run.
     *
     * @return bool
     */
    public function disableCommand()
    {
        return $this->commandShouldRun = false;
    }

    /**
     * Enables the command.
     *
     * @return bool
     */
    public function enableCommand()
    {
        return $this->commandShouldRun = true;
    }

    /**
     * Returns true if the command is runnable, false otherwise.
     *
     * @return bool
     */
    public function commandShouldRun()
    {
        return $this->commandShouldRun;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Event;

use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\EventDispatcher\Event;

/**
 * Allows to inspect input and output of a command.
 *
 * @author Francesco Levorato <git@flevour.net>
 */
class ConsoleEvent extends Event
{
    protected $command;

    private $input;
    private $output;

    public function __construct(Command $command = null, InputInterface $input, OutputInterface $output)
    {
        $this->command = $command;
        $this->input = $input;
        $this->output = $output;
    }

    /**
     * Gets the command that is executed.
     *
     * @return Command|null A Command instance
     */
    public function getCommand()
    {
        return $this->command;
    }

    /**
     * Gets the input instance.
     *
     * @return InputInterface An InputInterface instance
     */
    public function getInput()
    {
        return $this->input;
    }

    /**
     * Gets the output instance.
     *
     * @return OutputInterface An OutputInterface instance
     */
    public function getOutput()
    {
        return $this->output;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Event;

@trigger_error(sprintf('The "%s" class is deprecated since Symfony 3.3 and will be removed in 4.0. Use the ConsoleErrorEvent instead.', ConsoleExceptionEvent::class), E_USER_DEPRECATED);

use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * Allows to handle exception thrown in a command.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since version 3.3, to be removed in 4.0. Use ConsoleErrorEvent instead.
 */
class ConsoleExceptionEvent extends ConsoleEvent
{
    private $exception;
    private $exitCode;

    public function __construct(Command $command, InputInterface $input, OutputInterface $output, \Exception $exception, $exitCode)
    {
        parent::__construct($command, $input, $output);

        $this->setException($exception);
        $this->exitCode = (int) $exitCode;
    }

    /**
     * Returns the thrown exception.
     *
     * @return \Exception The thrown exception
     */
    public function getException()
    {
        return $this->exception;
    }

    /**
     * Replaces the thrown exception.
     *
     * This exception will be thrown if no response is set in the event.
     *
     * @param \Exception $exception The thrown exception
     */
    public function setException(\Exception $exception)
    {
        $this->exception = $exception;
    }

    /**
     * Gets the exit code.
     *
     * @return int The command exit code
     */
    public function getExitCode()
    {
        return $this->exitCode;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\EventListener;

use Psr\Log\LoggerInterface;
use Symfony\Component\Console\ConsoleEvents;
use Symfony\Component\Console\Event\ConsoleErrorEvent;
use Symfony\Component\Console\Event\ConsoleEvent;
use Symfony\Component\Console\Event\ConsoleTerminateEvent;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;

/**
 * @author James Halsall <james.t.halsall@googlemail.com>
 * @author Robin Chalas <robin.chalas@gmail.com>
 */
class ErrorListener implements EventSubscriberInterface
{
    private $logger;

    public function __construct(LoggerInterface $logger = null)
    {
        $this->logger = $logger;
    }

    public function onConsoleError(ConsoleErrorEvent $event)
    {
        if (null === $this->logger) {
            return;
        }

        $error = $event->getError();

        if (!$inputString = $this->getInputString($event)) {
            $this->logger->error('An error occurred while using the console. Message: "{message}"', ['exception' => $error, 'message' => $error->getMessage()]);

            return;
        }

        $this->logger->error('Error thrown while running command "{command}". Message: "{message}"', ['exception' => $error, 'command' => $inputString, 'message' => $error->getMessage()]);
    }

    public function onConsoleTerminate(ConsoleTerminateEvent $event)
    {
        if (null === $this->logger) {
            return;
        }

        $exitCode = $event->getExitCode();

        if (0 === $exitCode) {
            return;
        }

        if (!$inputString = $this->getInputString($event)) {
            $this->logger->debug('The console exited with code "{code}"', ['code' => $exitCode]);

            return;
        }

        $this->logger->debug('Command "{command}" exited with code "{code}"', ['command' => $inputString, 'code' => $exitCode]);
    }

    public static function getSubscribedEvents()
    {
        return [
            ConsoleEvents::ERROR => ['onConsoleError', -128],
            ConsoleEvents::TERMINATE => ['onConsoleTerminate', -128],
        ];
    }

    private static function getInputString(ConsoleEvent $event)
    {
        $commandName = $event->getCommand() ? $event->getCommand()->getName() : null;
        $input = $event->getInput();

        if (method_exists($input, '__toString')) {
            if ($commandName) {
                return str_replace(["'$commandName'", "\"$commandName\""], $commandName, (string) $input);
            }

            return (string) $input;
        }

        return $commandName;
    }
}
<?php

return array(
  'A' => 'a',
  'B' => 'b',
  'C' => 'c',
  'D' => 'd',
  'E' => 'e',
  'F' => 'f',
  'G' => 'g',
  'H' => 'h',
  'I' => 'i',
  'J' => 'j',
  'K' => 'k',
  'L' => 'l',
  'M' => 'm',
  'N' => 'n',
  'O' => 'o',
  'P' => 'p',
  'Q' => 'q',
  'R' => 'r',
  'S' => 's',
  'T' => 't',
  'U' => 'u',
  'V' => 'v',
  'W' => 'w',
  'X' => 'x',
  'Y' => 'y',
  'Z' => 'z',
  'Ã€' => 'Ã ',
  'Ã' => 'Ã¡',
  'Ã‚' => 'Ã¢',
  'Ãƒ' => 'Ã£',
  'Ã„' => 'Ã¤',
  'Ã…' => 'Ã¥',
  'Ã†' => 'Ã¦',
  'Ã‡' => 'Ã§',
  'Ãˆ' => 'Ã¨',
  'Ã‰' => 'Ã©',
  'ÃŠ' => 'Ãª',
  'Ã‹' => 'Ã«',
  'ÃŒ' => 'Ã¬',
  'Ã' => 'Ã­',
  'ÃŽ' => 'Ã®',
  'Ã' => 'Ã¯',
  'Ã' => 'Ã°',
  'Ã‘' => 'Ã±',
  'Ã’' => 'Ã²',
  'Ã“' => 'Ã³',
  'Ã”' => 'Ã´',
  'Ã•' => 'Ãµ',
  'Ã–' => 'Ã¶',
  'Ã˜' => 'Ã¸',
  'Ã™' => 'Ã¹',
  'Ãš' => 'Ãº',
  'Ã›' => 'Ã»',
  'Ãœ' => 'Ã¼',
  'Ã' => 'Ã½',
  'Ãž' => 'Ã¾',
  'Ä€' => 'Ä',
  'Ä‚' => 'Äƒ',
  'Ä„' => 'Ä…',
  'Ä†' => 'Ä‡',
  'Äˆ' => 'Ä‰',
  'ÄŠ' => 'Ä‹',
  'ÄŒ' => 'Ä',
  'ÄŽ' => 'Ä',
  'Ä' => 'Ä‘',
  'Ä’' => 'Ä“',
  'Ä”' => 'Ä•',
  'Ä–' => 'Ä—',
  'Ä˜' => 'Ä™',
  'Äš' => 'Ä›',
  'Äœ' => 'Ä',
  'Äž' => 'ÄŸ',
  'Ä ' => 'Ä¡',
  'Ä¢' => 'Ä£',
  'Ä¤' => 'Ä¥',
  'Ä¦' => 'Ä§',
  'Ä¨' => 'Ä©',
  'Äª' => 'Ä«',
  'Ä¬' => 'Ä­',
  'Ä®' => 'Ä¯',
  'Ä°' => 'i',
  'Ä²' => 'Ä³',
  'Ä´' => 'Äµ',
  'Ä¶' => 'Ä·',
  'Ä¹' => 'Äº',
  'Ä»' => 'Ä¼',
  'Ä½' => 'Ä¾',
  'Ä¿' => 'Å€',
  'Å' => 'Å‚',
  'Åƒ' => 'Å„',
  'Å…' => 'Å†',
  'Å‡' => 'Åˆ',
  'ÅŠ' => 'Å‹',
  'ÅŒ' => 'Å',
  'ÅŽ' => 'Å',
  'Å' => 'Å‘',
  'Å’' => 'Å“',
  'Å”' => 'Å•',
  'Å–' => 'Å—',
  'Å˜' => 'Å™',
  'Åš' => 'Å›',
  'Åœ' => 'Å',
  'Åž' => 'ÅŸ',
  'Å ' => 'Å¡',
  'Å¢' => 'Å£',
  'Å¤' => 'Å¥',
  'Å¦' => 'Å§',
  'Å¨' => 'Å©',
  'Åª' => 'Å«',
  'Å¬' => 'Å­',
  'Å®' => 'Å¯',
  'Å°' => 'Å±',
  'Å²' => 'Å³',
  'Å´' => 'Åµ',
  'Å¶' => 'Å·',
  'Å¸' => 'Ã¿',
  'Å¹' => 'Åº',
  'Å»' => 'Å¼',
  'Å½' => 'Å¾',
  'Æ' => 'É“',
  'Æ‚' => 'Æƒ',
  'Æ„' => 'Æ…',
  'Æ†' => 'É”',
  'Æ‡' => 'Æˆ',
  'Æ‰' => 'É–',
  'ÆŠ' => 'É—',
  'Æ‹' => 'ÆŒ',
  'ÆŽ' => 'Ç',
  'Æ' => 'É™',
  'Æ' => 'É›',
  'Æ‘' => 'Æ’',
  'Æ“' => 'É ',
  'Æ”' => 'É£',
  'Æ–' => 'É©',
  'Æ—' => 'É¨',
  'Æ˜' => 'Æ™',
  'Æœ' => 'É¯',
  'Æ' => 'É²',
  'ÆŸ' => 'Éµ',
  'Æ ' => 'Æ¡',
  'Æ¢' => 'Æ£',
  'Æ¤' => 'Æ¥',
  'Æ¦' => 'Ê€',
  'Æ§' => 'Æ¨',
  'Æ©' => 'Êƒ',
  'Æ¬' => 'Æ­',
  'Æ®' => 'Êˆ',
  'Æ¯' => 'Æ°',
  'Æ±' => 'ÊŠ',
  'Æ²' => 'Ê‹',
  'Æ³' => 'Æ´',
  'Æµ' => 'Æ¶',
  'Æ·' => 'Ê’',
  'Æ¸' => 'Æ¹',
  'Æ¼' => 'Æ½',
  'Ç„' => 'Ç†',
  'Ç…' => 'Ç†',
  'Ç‡' => 'Ç‰',
  'Çˆ' => 'Ç‰',
  'ÇŠ' => 'ÇŒ',
  'Ç‹' => 'ÇŒ',
  'Ç' => 'ÇŽ',
  'Ç' => 'Ç',
  'Ç‘' => 'Ç’',
  'Ç“' => 'Ç”',
  'Ç•' => 'Ç–',
  'Ç—' => 'Ç˜',
  'Ç™' => 'Çš',
  'Ç›' => 'Çœ',
  'Çž' => 'ÇŸ',
  'Ç ' => 'Ç¡',
  'Ç¢' => 'Ç£',
  'Ç¤' => 'Ç¥',
  'Ç¦' => 'Ç§',
  'Ç¨' => 'Ç©',
  'Çª' => 'Ç«',
  'Ç¬' => 'Ç­',
  'Ç®' => 'Ç¯',
  'Ç±' => 'Ç³',
  'Ç²' => 'Ç³',
  'Ç´' => 'Çµ',
  'Ç¶' => 'Æ•',
  'Ç·' => 'Æ¿',
  'Ç¸' => 'Ç¹',
  'Çº' => 'Ç»',
  'Ç¼' => 'Ç½',
  'Ç¾' => 'Ç¿',
  'È€' => 'È',
  'È‚' => 'Èƒ',
  'È„' => 'È…',
  'È†' => 'È‡',
  'Èˆ' => 'È‰',
  'ÈŠ' => 'È‹',
  'ÈŒ' => 'È',
  'ÈŽ' => 'È',
  'È' => 'È‘',
  'È’' => 'È“',
  'È”' => 'È•',
  'È–' => 'È—',
  'È˜' => 'È™',
  'Èš' => 'È›',
  'Èœ' => 'È',
  'Èž' => 'ÈŸ',
  'È ' => 'Æž',
  'È¢' => 'È£',
  'È¤' => 'È¥',
  'È¦' => 'È§',
  'È¨' => 'È©',
  'Èª' => 'È«',
  'È¬' => 'È­',
  'È®' => 'È¯',
  'È°' => 'È±',
  'È²' => 'È³',
  'Èº' => 'â±¥',
  'È»' => 'È¼',
  'È½' => 'Æš',
  'È¾' => 'â±¦',
  'É' => 'É‚',
  'Éƒ' => 'Æ€',
  'É„' => 'Ê‰',
  'É…' => 'ÊŒ',
  'É†' => 'É‡',
  'Éˆ' => 'É‰',
  'ÉŠ' => 'É‹',
  'ÉŒ' => 'É',
  'ÉŽ' => 'É',
  'Í°' => 'Í±',
  'Í²' => 'Í³',
  'Í¶' => 'Í·',
  'Í¿' => 'Ï³',
  'Î†' => 'Î¬',
  'Îˆ' => 'Î­',
  'Î‰' => 'Î®',
  'ÎŠ' => 'Î¯',
  'ÎŒ' => 'ÏŒ',
  'ÎŽ' => 'Ï',
  'Î' => 'ÏŽ',
  'Î‘' => 'Î±',
  'Î’' => 'Î²',
  'Î“' => 'Î³',
  'Î”' => 'Î´',
  'Î•' => 'Îµ',
  'Î–' => 'Î¶',
  'Î—' => 'Î·',
  'Î˜' => 'Î¸',
  'Î™' => 'Î¹',
  'Îš' => 'Îº',
  'Î›' => 'Î»',
  'Îœ' => 'Î¼',
  'Î' => 'Î½',
  'Îž' => 'Î¾',
  'ÎŸ' => 'Î¿',
  'Î ' => 'Ï€',
  'Î¡' => 'Ï',
  'Î£' => 'Ïƒ',
  'Î¤' => 'Ï„',
  'Î¥' => 'Ï…',
  'Î¦' => 'Ï†',
  'Î§' => 'Ï‡',
  'Î¨' => 'Ïˆ',
  'Î©' => 'Ï‰',
  'Îª' => 'ÏŠ',
  'Î«' => 'Ï‹',
  'Ï' => 'Ï—',
  'Ï˜' => 'Ï™',
  'Ïš' => 'Ï›',
  'Ïœ' => 'Ï',
  'Ïž' => 'ÏŸ',
  'Ï ' => 'Ï¡',
  'Ï¢' => 'Ï£',
  'Ï¤' => 'Ï¥',
  'Ï¦' => 'Ï§',
  'Ï¨' => 'Ï©',
  'Ïª' => 'Ï«',
  'Ï¬' => 'Ï­',
  'Ï®' => 'Ï¯',
  'Ï´' => 'Î¸',
  'Ï·' => 'Ï¸',
  'Ï¹' => 'Ï²',
  'Ïº' => 'Ï»',
  'Ï½' => 'Í»',
  'Ï¾' => 'Í¼',
  'Ï¿' => 'Í½',
  'Ð€' => 'Ñ',
  'Ð' => 'Ñ‘',
  'Ð‚' => 'Ñ’',
  'Ðƒ' => 'Ñ“',
  'Ð„' => 'Ñ”',
  'Ð…' => 'Ñ•',
  'Ð†' => 'Ñ–',
  'Ð‡' => 'Ñ—',
  'Ðˆ' => 'Ñ˜',
  'Ð‰' => 'Ñ™',
  'ÐŠ' => 'Ñš',
  'Ð‹' => 'Ñ›',
  'ÐŒ' => 'Ñœ',
  'Ð' => 'Ñ',
  'ÐŽ' => 'Ñž',
  'Ð' => 'ÑŸ',
  'Ð' => 'Ð°',
  'Ð‘' => 'Ð±',
  'Ð’' => 'Ð²',
  'Ð“' => 'Ð³',
  'Ð”' => 'Ð´',
  'Ð•' => 'Ðµ',
  'Ð–' => 'Ð¶',
  'Ð—' => 'Ð·',
  'Ð˜' => 'Ð¸',
  'Ð™' => 'Ð¹',
  'Ðš' => 'Ðº',
  'Ð›' => 'Ð»',
  'Ðœ' => 'Ð¼',
  'Ð' => 'Ð½',
  'Ðž' => 'Ð¾',
  'ÐŸ' => 'Ð¿',
  'Ð ' => 'Ñ€',
  'Ð¡' => 'Ñ',
  'Ð¢' => 'Ñ‚',
  'Ð£' => 'Ñƒ',
  'Ð¤' => 'Ñ„',
  'Ð¥' => 'Ñ…',
  'Ð¦' => 'Ñ†',
  'Ð§' => 'Ñ‡',
  'Ð¨' => 'Ñˆ',
  'Ð©' => 'Ñ‰',
  'Ðª' => 'ÑŠ',
  'Ð«' => 'Ñ‹',
  'Ð¬' => 'ÑŒ',
  'Ð­' => 'Ñ',
  'Ð®' => 'ÑŽ',
  'Ð¯' => 'Ñ',
  'Ñ ' => 'Ñ¡',
  'Ñ¢' => 'Ñ£',
  'Ñ¤' => 'Ñ¥',
  'Ñ¦' => 'Ñ§',
  'Ñ¨' => 'Ñ©',
  'Ñª' => 'Ñ«',
  'Ñ¬' => 'Ñ­',
  'Ñ®' => 'Ñ¯',
  'Ñ°' => 'Ñ±',
  'Ñ²' => 'Ñ³',
  'Ñ´' => 'Ñµ',
  'Ñ¶' => 'Ñ·',
  'Ñ¸' => 'Ñ¹',
  'Ñº' => 'Ñ»',
  'Ñ¼' => 'Ñ½',
  'Ñ¾' => 'Ñ¿',
  'Ò€' => 'Ò',
  'ÒŠ' => 'Ò‹',
  'ÒŒ' => 'Ò',
  'ÒŽ' => 'Ò',
  'Ò' => 'Ò‘',
  'Ò’' => 'Ò“',
  'Ò”' => 'Ò•',
  'Ò–' => 'Ò—',
  'Ò˜' => 'Ò™',
  'Òš' => 'Ò›',
  'Òœ' => 'Ò',
  'Òž' => 'ÒŸ',
  'Ò ' => 'Ò¡',
  'Ò¢' => 'Ò£',
  'Ò¤' => 'Ò¥',
  'Ò¦' => 'Ò§',
  'Ò¨' => 'Ò©',
  'Òª' => 'Ò«',
  'Ò¬' => 'Ò­',
  'Ò®' => 'Ò¯',
  'Ò°' => 'Ò±',
  'Ò²' => 'Ò³',
  'Ò´' => 'Òµ',
  'Ò¶' => 'Ò·',
  'Ò¸' => 'Ò¹',
  'Òº' => 'Ò»',
  'Ò¼' => 'Ò½',
  'Ò¾' => 'Ò¿',
  'Ó€' => 'Ó',
  'Ó' => 'Ó‚',
  'Óƒ' => 'Ó„',
  'Ó…' => 'Ó†',
  'Ó‡' => 'Óˆ',
  'Ó‰' => 'ÓŠ',
  'Ó‹' => 'ÓŒ',
  'Ó' => 'ÓŽ',
  'Ó' => 'Ó‘',
  'Ó’' => 'Ó“',
  'Ó”' => 'Ó•',
  'Ó–' => 'Ó—',
  'Ó˜' => 'Ó™',
  'Óš' => 'Ó›',
  'Óœ' => 'Ó',
  'Óž' => 'ÓŸ',
  'Ó ' => 'Ó¡',
  'Ó¢' => 'Ó£',
  'Ó¤' => 'Ó¥',
  'Ó¦' => 'Ó§',
  'Ó¨' => 'Ó©',
  'Óª' => 'Ó«',
  'Ó¬' => 'Ó­',
  'Ó®' => 'Ó¯',
  'Ó°' => 'Ó±',
  'Ó²' => 'Ó³',
  'Ó´' => 'Óµ',
  'Ó¶' => 'Ó·',
  'Ó¸' => 'Ó¹',
  'Óº' => 'Ó»',
  'Ó¼' => 'Ó½',
  'Ó¾' => 'Ó¿',
  'Ô€' => 'Ô',
  'Ô‚' => 'Ôƒ',
  'Ô„' => 'Ô…',
  'Ô†' => 'Ô‡',
  'Ôˆ' => 'Ô‰',
  'ÔŠ' => 'Ô‹',
  'ÔŒ' => 'Ô',
  'ÔŽ' => 'Ô',
  'Ô' => 'Ô‘',
  'Ô’' => 'Ô“',
  'Ô”' => 'Ô•',
  'Ô–' => 'Ô—',
  'Ô˜' => 'Ô™',
  'Ôš' => 'Ô›',
  'Ôœ' => 'Ô',
  'Ôž' => 'ÔŸ',
  'Ô ' => 'Ô¡',
  'Ô¢' => 'Ô£',
  'Ô¤' => 'Ô¥',
  'Ô¦' => 'Ô§',
  'Ô¨' => 'Ô©',
  'Ôª' => 'Ô«',
  'Ô¬' => 'Ô­',
  'Ô®' => 'Ô¯',
  'Ô±' => 'Õ¡',
  'Ô²' => 'Õ¢',
  'Ô³' => 'Õ£',
  'Ô´' => 'Õ¤',
  'Ôµ' => 'Õ¥',
  'Ô¶' => 'Õ¦',
  'Ô·' => 'Õ§',
  'Ô¸' => 'Õ¨',
  'Ô¹' => 'Õ©',
  'Ôº' => 'Õª',
  'Ô»' => 'Õ«',
  'Ô¼' => 'Õ¬',
  'Ô½' => 'Õ­',
  'Ô¾' => 'Õ®',
  'Ô¿' => 'Õ¯',
  'Õ€' => 'Õ°',
  'Õ' => 'Õ±',
  'Õ‚' => 'Õ²',
  'Õƒ' => 'Õ³',
  'Õ„' => 'Õ´',
  'Õ…' => 'Õµ',
  'Õ†' => 'Õ¶',
  'Õ‡' => 'Õ·',
  'Õˆ' => 'Õ¸',
  'Õ‰' => 'Õ¹',
  'ÕŠ' => 'Õº',
  'Õ‹' => 'Õ»',
  'ÕŒ' => 'Õ¼',
  'Õ' => 'Õ½',
  'ÕŽ' => 'Õ¾',
  'Õ' => 'Õ¿',
  'Õ' => 'Ö€',
  'Õ‘' => 'Ö',
  'Õ’' => 'Ö‚',
  'Õ“' => 'Öƒ',
  'Õ”' => 'Ö„',
  'Õ•' => 'Ö…',
  'Õ–' => 'Ö†',
  'á‚ ' => 'â´€',
  'á‚¡' => 'â´',
  'á‚¢' => 'â´‚',
  'á‚£' => 'â´ƒ',
  'á‚¤' => 'â´„',
  'á‚¥' => 'â´…',
  'á‚¦' => 'â´†',
  'á‚§' => 'â´‡',
  'á‚¨' => 'â´ˆ',
  'á‚©' => 'â´‰',
  'á‚ª' => 'â´Š',
  'á‚«' => 'â´‹',
  'á‚¬' => 'â´Œ',
  'á‚­' => 'â´',
  'á‚®' => 'â´Ž',
  'á‚¯' => 'â´',
  'á‚°' => 'â´',
  'á‚±' => 'â´‘',
  'á‚²' => 'â´’',
  'á‚³' => 'â´“',
  'á‚´' => 'â´”',
  'á‚µ' => 'â´•',
  'á‚¶' => 'â´–',
  'á‚·' => 'â´—',
  'á‚¸' => 'â´˜',
  'á‚¹' => 'â´™',
  'á‚º' => 'â´š',
  'á‚»' => 'â´›',
  'á‚¼' => 'â´œ',
  'á‚½' => 'â´',
  'á‚¾' => 'â´ž',
  'á‚¿' => 'â´Ÿ',
  'áƒ€' => 'â´ ',
  'áƒ' => 'â´¡',
  'áƒ‚' => 'â´¢',
  'áƒƒ' => 'â´£',
  'áƒ„' => 'â´¤',
  'áƒ…' => 'â´¥',
  'áƒ‡' => 'â´§',
  'áƒ' => 'â´­',
  'á¸€' => 'á¸',
  'á¸‚' => 'á¸ƒ',
  'á¸„' => 'á¸…',
  'á¸†' => 'á¸‡',
  'á¸ˆ' => 'á¸‰',
  'á¸Š' => 'á¸‹',
  'á¸Œ' => 'á¸',
  'á¸Ž' => 'á¸',
  'á¸' => 'á¸‘',
  'á¸’' => 'á¸“',
  'á¸”' => 'á¸•',
  'á¸–' => 'á¸—',
  'á¸˜' => 'á¸™',
  'á¸š' => 'á¸›',
  'á¸œ' => 'á¸',
  'á¸ž' => 'á¸Ÿ',
  'á¸ ' => 'á¸¡',
  'á¸¢' => 'á¸£',
  'á¸¤' => 'á¸¥',
  'á¸¦' => 'á¸§',
  'á¸¨' => 'á¸©',
  'á¸ª' => 'á¸«',
  'á¸¬' => 'á¸­',
  'á¸®' => 'á¸¯',
  'á¸°' => 'á¸±',
  'á¸²' => 'á¸³',
  'á¸´' => 'á¸µ',
  'á¸¶' => 'á¸·',
  'á¸¸' => 'á¸¹',
  'á¸º' => 'á¸»',
  'á¸¼' => 'á¸½',
  'á¸¾' => 'á¸¿',
  'á¹€' => 'á¹',
  'á¹‚' => 'á¹ƒ',
  'á¹„' => 'á¹…',
  'á¹†' => 'á¹‡',
  'á¹ˆ' => 'á¹‰',
  'á¹Š' => 'á¹‹',
  'á¹Œ' => 'á¹',
  'á¹Ž' => 'á¹',
  'á¹' => 'á¹‘',
  'á¹’' => 'á¹“',
  'á¹”' => 'á¹•',
  'á¹–' => 'á¹—',
  'á¹˜' => 'á¹™',
  'á¹š' => 'á¹›',
  'á¹œ' => 'á¹',
  'á¹ž' => 'á¹Ÿ',
  'á¹ ' => 'á¹¡',
  'á¹¢' => 'á¹£',
  'á¹¤' => 'á¹¥',
  'á¹¦' => 'á¹§',
  'á¹¨' => 'á¹©',
  'á¹ª' => 'á¹«',
  'á¹¬' => 'á¹­',
  'á¹®' => 'á¹¯',
  'á¹°' => 'á¹±',
  'á¹²' => 'á¹³',
  'á¹´' => 'á¹µ',
  'á¹¶' => 'á¹·',
  'á¹¸' => 'á¹¹',
  'á¹º' => 'á¹»',
  'á¹¼' => 'á¹½',
  'á¹¾' => 'á¹¿',
  'áº€' => 'áº',
  'áº‚' => 'áºƒ',
  'áº„' => 'áº…',
  'áº†' => 'áº‡',
  'áºˆ' => 'áº‰',
  'áºŠ' => 'áº‹',
  'áºŒ' => 'áº',
  'áºŽ' => 'áº',
  'áº' => 'áº‘',
  'áº’' => 'áº“',
  'áº”' => 'áº•',
  'áºž' => 'ÃŸ',
  'áº ' => 'áº¡',
  'áº¢' => 'áº£',
  'áº¤' => 'áº¥',
  'áº¦' => 'áº§',
  'áº¨' => 'áº©',
  'áºª' => 'áº«',
  'áº¬' => 'áº­',
  'áº®' => 'áº¯',
  'áº°' => 'áº±',
  'áº²' => 'áº³',
  'áº´' => 'áºµ',
  'áº¶' => 'áº·',
  'áº¸' => 'áº¹',
  'áºº' => 'áº»',
  'áº¼' => 'áº½',
  'áº¾' => 'áº¿',
  'á»€' => 'á»',
  'á»‚' => 'á»ƒ',
  'á»„' => 'á»…',
  'á»†' => 'á»‡',
  'á»ˆ' => 'á»‰',
  'á»Š' => 'á»‹',
  'á»Œ' => 'á»',
  'á»Ž' => 'á»',
  'á»' => 'á»‘',
  'á»’' => 'á»“',
  'á»”' => 'á»•',
  'á»–' => 'á»—',
  'á»˜' => 'á»™',
  'á»š' => 'á»›',
  'á»œ' => 'á»',
  'á»ž' => 'á»Ÿ',
  'á» ' => 'á»¡',
  'á»¢' => 'á»£',
  'á»¤' => 'á»¥',
  'á»¦' => 'á»§',
  'á»¨' => 'á»©',
  'á»ª' => 'á»«',
  'á»¬' => 'á»­',
  'á»®' => 'á»¯',
  'á»°' => 'á»±',
  'á»²' => 'á»³',
  'á»´' => 'á»µ',
  'á»¶' => 'á»·',
  'á»¸' => 'á»¹',
  'á»º' => 'á»»',
  'á»¼' => 'á»½',
  'á»¾' => 'á»¿',
  'á¼ˆ' => 'á¼€',
  'á¼‰' => 'á¼',
  'á¼Š' => 'á¼‚',
  'á¼‹' => 'á¼ƒ',
  'á¼Œ' => 'á¼„',
  'á¼' => 'á¼…',
  'á¼Ž' => 'á¼†',
  'á¼' => 'á¼‡',
  'á¼˜' => 'á¼',
  'á¼™' => 'á¼‘',
  'á¼š' => 'á¼’',
  'á¼›' => 'á¼“',
  'á¼œ' => 'á¼”',
  'á¼' => 'á¼•',
  'á¼¨' => 'á¼ ',
  'á¼©' => 'á¼¡',
  'á¼ª' => 'á¼¢',
  'á¼«' => 'á¼£',
  'á¼¬' => 'á¼¤',
  'á¼­' => 'á¼¥',
  'á¼®' => 'á¼¦',
  'á¼¯' => 'á¼§',
  'á¼¸' => 'á¼°',
  'á¼¹' => 'á¼±',
  'á¼º' => 'á¼²',
  'á¼»' => 'á¼³',
  'á¼¼' => 'á¼´',
  'á¼½' => 'á¼µ',
  'á¼¾' => 'á¼¶',
  'á¼¿' => 'á¼·',
  'á½ˆ' => 'á½€',
  'á½‰' => 'á½',
  'á½Š' => 'á½‚',
  'á½‹' => 'á½ƒ',
  'á½Œ' => 'á½„',
  'á½' => 'á½…',
  'á½™' => 'á½‘',
  'á½›' => 'á½“',
  'á½' => 'á½•',
  'á½Ÿ' => 'á½—',
  'á½¨' => 'á½ ',
  'á½©' => 'á½¡',
  'á½ª' => 'á½¢',
  'á½«' => 'á½£',
  'á½¬' => 'á½¤',
  'á½­' => 'á½¥',
  'á½®' => 'á½¦',
  'á½¯' => 'á½§',
  'á¾ˆ' => 'á¾€',
  'á¾‰' => 'á¾',
  'á¾Š' => 'á¾‚',
  'á¾‹' => 'á¾ƒ',
  'á¾Œ' => 'á¾„',
  'á¾' => 'á¾…',
  'á¾Ž' => 'á¾†',
  'á¾' => 'á¾‡',
  'á¾˜' => 'á¾',
  'á¾™' => 'á¾‘',
  'á¾š' => 'á¾’',
  'á¾›' => 'á¾“',
  'á¾œ' => 'á¾”',
  'á¾' => 'á¾•',
  'á¾ž' => 'á¾–',
  'á¾Ÿ' => 'á¾—',
  'á¾¨' => 'á¾ ',
  'á¾©' => 'á¾¡',
  'á¾ª' => 'á¾¢',
  'á¾«' => 'á¾£',
  'á¾¬' => 'á¾¤',
  'á¾­' => 'á¾¥',
  'á¾®' => 'á¾¦',
  'á¾¯' => 'á¾§',
  'á¾¸' => 'á¾°',
  'á¾¹' => 'á¾±',
  'á¾º' => 'á½°',
  'á¾»' => 'á½±',
  'á¾¼' => 'á¾³',
  'á¿ˆ' => 'á½²',
  'á¿‰' => 'á½³',
  'á¿Š' => 'á½´',
  'á¿‹' => 'á½µ',
  'á¿Œ' => 'á¿ƒ',
  'á¿˜' => 'á¿',
  'á¿™' => 'á¿‘',
  'á¿š' => 'á½¶',
  'á¿›' => 'á½·',
  'á¿¨' => 'á¿ ',
  'á¿©' => 'á¿¡',
  'á¿ª' => 'á½º',
  'á¿«' => 'á½»',
  'á¿¬' => 'á¿¥',
  'á¿¸' => 'á½¸',
  'á¿¹' => 'á½¹',
  'á¿º' => 'á½¼',
  'á¿»' => 'á½½',
  'á¿¼' => 'á¿³',
  'â„¦' => 'Ï‰',
  'â„ª' => 'k',
  'â„«' => 'Ã¥',
  'â„²' => 'â…Ž',
  'â… ' => 'â…°',
  'â…¡' => 'â…±',
  'â…¢' => 'â…²',
  'â…£' => 'â…³',
  'â…¤' => 'â…´',
  'â…¥' => 'â…µ',
  'â…¦' => 'â…¶',
  'â…§' => 'â…·',
  'â…¨' => 'â…¸',
  'â…©' => 'â…¹',
  'â…ª' => 'â…º',
  'â…«' => 'â…»',
  'â…¬' => 'â…¼',
  'â…­' => 'â…½',
  'â…®' => 'â…¾',
  'â…¯' => 'â…¿',
  'â†ƒ' => 'â†„',
  'â’¶' => 'â“',
  'â’·' => 'â“‘',
  'â’¸' => 'â“’',
  'â’¹' => 'â““',
  'â’º' => 'â“”',
  'â’»' => 'â“•',
  'â’¼' => 'â“–',
  'â’½' => 'â“—',
  'â’¾' => 'â“˜',
  'â’¿' => 'â“™',
  'â“€' => 'â“š',
  'â“' => 'â“›',
  'â“‚' => 'â“œ',
  'â“ƒ' => 'â“',
  'â“„' => 'â“ž',
  'â“…' => 'â“Ÿ',
  'â“†' => 'â“ ',
  'â“‡' => 'â“¡',
  'â“ˆ' => 'â“¢',
  'â“‰' => 'â“£',
  'â“Š' => 'â“¤',
  'â“‹' => 'â“¥',
  'â“Œ' => 'â“¦',
  'â“' => 'â“§',
  'â“Ž' => 'â“¨',
  'â“' => 'â“©',
  'â°€' => 'â°°',
  'â°' => 'â°±',
  'â°‚' => 'â°²',
  'â°ƒ' => 'â°³',
  'â°„' => 'â°´',
  'â°…' => 'â°µ',
  'â°†' => 'â°¶',
  'â°‡' => 'â°·',
  'â°ˆ' => 'â°¸',
  'â°‰' => 'â°¹',
  'â°Š' => 'â°º',
  'â°‹' => 'â°»',
  'â°Œ' => 'â°¼',
  'â°' => 'â°½',
  'â°Ž' => 'â°¾',
  'â°' => 'â°¿',
  'â°' => 'â±€',
  'â°‘' => 'â±',
  'â°’' => 'â±‚',
  'â°“' => 'â±ƒ',
  'â°”' => 'â±„',
  'â°•' => 'â±…',
  'â°–' => 'â±†',
  'â°—' => 'â±‡',
  'â°˜' => 'â±ˆ',
  'â°™' => 'â±‰',
  'â°š' => 'â±Š',
  'â°›' => 'â±‹',
  'â°œ' => 'â±Œ',
  'â°' => 'â±',
  'â°ž' => 'â±Ž',
  'â°Ÿ' => 'â±',
  'â° ' => 'â±',
  'â°¡' => 'â±‘',
  'â°¢' => 'â±’',
  'â°£' => 'â±“',
  'â°¤' => 'â±”',
  'â°¥' => 'â±•',
  'â°¦' => 'â±–',
  'â°§' => 'â±—',
  'â°¨' => 'â±˜',
  'â°©' => 'â±™',
  'â°ª' => 'â±š',
  'â°«' => 'â±›',
  'â°¬' => 'â±œ',
  'â°­' => 'â±',
  'â°®' => 'â±ž',
  'â± ' => 'â±¡',
  'â±¢' => 'É«',
  'â±£' => 'áµ½',
  'â±¤' => 'É½',
  'â±§' => 'â±¨',
  'â±©' => 'â±ª',
  'â±«' => 'â±¬',
  'â±­' => 'É‘',
  'â±®' => 'É±',
  'â±¯' => 'É',
  'â±°' => 'É’',
  'â±²' => 'â±³',
  'â±µ' => 'â±¶',
  'â±¾' => 'È¿',
  'â±¿' => 'É€',
  'â²€' => 'â²',
  'â²‚' => 'â²ƒ',
  'â²„' => 'â²…',
  'â²†' => 'â²‡',
  'â²ˆ' => 'â²‰',
  'â²Š' => 'â²‹',
  'â²Œ' => 'â²',
  'â²Ž' => 'â²',
  'â²' => 'â²‘',
  'â²’' => 'â²“',
  'â²”' => 'â²•',
  'â²–' => 'â²—',
  'â²˜' => 'â²™',
  'â²š' => 'â²›',
  'â²œ' => 'â²',
  'â²ž' => 'â²Ÿ',
  'â² ' => 'â²¡',
  'â²¢' => 'â²£',
  'â²¤' => 'â²¥',
  'â²¦' => 'â²§',
  'â²¨' => 'â²©',
  'â²ª' => 'â²«',
  'â²¬' => 'â²­',
  'â²®' => 'â²¯',
  'â²°' => 'â²±',
  'â²²' => 'â²³',
  'â²´' => 'â²µ',
  'â²¶' => 'â²·',
  'â²¸' => 'â²¹',
  'â²º' => 'â²»',
  'â²¼' => 'â²½',
  'â²¾' => 'â²¿',
  'â³€' => 'â³',
  'â³‚' => 'â³ƒ',
  'â³„' => 'â³…',
  'â³†' => 'â³‡',
  'â³ˆ' => 'â³‰',
  'â³Š' => 'â³‹',
  'â³Œ' => 'â³',
  'â³Ž' => 'â³',
  'â³' => 'â³‘',
  'â³’' => 'â³“',
  'â³”' => 'â³•',
  'â³–' => 'â³—',
  'â³˜' => 'â³™',
  'â³š' => 'â³›',
  'â³œ' => 'â³',
  'â³ž' => 'â³Ÿ',
  'â³ ' => 'â³¡',
  'â³¢' => 'â³£',
  'â³«' => 'â³¬',
  'â³­' => 'â³®',
  'â³²' => 'â³³',
  'ê™€' => 'ê™',
  'ê™‚' => 'ê™ƒ',
  'ê™„' => 'ê™…',
  'ê™†' => 'ê™‡',
  'ê™ˆ' => 'ê™‰',
  'ê™Š' => 'ê™‹',
  'ê™Œ' => 'ê™',
  'ê™Ž' => 'ê™',
  'ê™' => 'ê™‘',
  'ê™’' => 'ê™“',
  'ê™”' => 'ê™•',
  'ê™–' => 'ê™—',
  'ê™˜' => 'ê™™',
  'ê™š' => 'ê™›',
  'ê™œ' => 'ê™',
  'ê™ž' => 'ê™Ÿ',
  'ê™ ' => 'ê™¡',
  'ê™¢' => 'ê™£',
  'ê™¤' => 'ê™¥',
  'ê™¦' => 'ê™§',
  'ê™¨' => 'ê™©',
  'ê™ª' => 'ê™«',
  'ê™¬' => 'ê™­',
  'êš€' => 'êš',
  'êš‚' => 'êšƒ',
  'êš„' => 'êš…',
  'êš†' => 'êš‡',
  'êšˆ' => 'êš‰',
  'êšŠ' => 'êš‹',
  'êšŒ' => 'êš',
  'êšŽ' => 'êš',
  'êš' => 'êš‘',
  'êš’' => 'êš“',
  'êš”' => 'êš•',
  'êš–' => 'êš—',
  'êš˜' => 'êš™',
  'êšš' => 'êš›',
  'êœ¢' => 'êœ£',
  'êœ¤' => 'êœ¥',
  'êœ¦' => 'êœ§',
  'êœ¨' => 'êœ©',
  'êœª' => 'êœ«',
  'êœ¬' => 'êœ­',
  'êœ®' => 'êœ¯',
  'êœ²' => 'êœ³',
  'êœ´' => 'êœµ',
  'êœ¶' => 'êœ·',
  'êœ¸' => 'êœ¹',
  'êœº' => 'êœ»',
  'êœ¼' => 'êœ½',
  'êœ¾' => 'êœ¿',
  'ê€' => 'ê',
  'ê‚' => 'êƒ',
  'ê„' => 'ê…',
  'ê†' => 'ê‡',
  'êˆ' => 'ê‰',
  'êŠ' => 'ê‹',
  'êŒ' => 'ê',
  'êŽ' => 'ê',
  'ê' => 'ê‘',
  'ê’' => 'ê“',
  'ê”' => 'ê•',
  'ê–' => 'ê—',
  'ê˜' => 'ê™',
  'êš' => 'ê›',
  'êœ' => 'ê',
  'êž' => 'êŸ',
  'ê ' => 'ê¡',
  'ê¢' => 'ê£',
  'ê¤' => 'ê¥',
  'ê¦' => 'ê§',
  'ê¨' => 'ê©',
  'êª' => 'ê«',
  'ê¬' => 'ê­',
  'ê®' => 'ê¯',
  'ê¹' => 'êº',
  'ê»' => 'ê¼',
  'ê½' => 'áµ¹',
  'ê¾' => 'ê¿',
  'êž€' => 'êž',
  'êž‚' => 'êžƒ',
  'êž„' => 'êž…',
  'êž†' => 'êž‡',
  'êž‹' => 'êžŒ',
  'êž' => 'É¥',
  'êž' => 'êž‘',
  'êž’' => 'êž“',
  'êž–' => 'êž—',
  'êž˜' => 'êž™',
  'êžš' => 'êž›',
  'êžœ' => 'êž',
  'êžž' => 'êžŸ',
  'êž ' => 'êž¡',
  'êž¢' => 'êž£',
  'êž¤' => 'êž¥',
  'êž¦' => 'êž§',
  'êž¨' => 'êž©',
  'êžª' => 'É¦',
  'êž«' => 'Éœ',
  'êž¬' => 'É¡',
  'êž­' => 'É¬',
  'êž°' => 'Êž',
  'êž±' => 'Ê‡',
  'ï¼¡' => 'ï½',
  'ï¼¢' => 'ï½‚',
  'ï¼£' => 'ï½ƒ',
  'ï¼¤' => 'ï½„',
  'ï¼¥' => 'ï½…',
  'ï¼¦' => 'ï½†',
  'ï¼§' => 'ï½‡',
  'ï¼¨' => 'ï½ˆ',
  'ï¼©' => 'ï½‰',
  'ï¼ª' => 'ï½Š',
  'ï¼«' => 'ï½‹',
  'ï¼¬' => 'ï½Œ',
  'ï¼­' => 'ï½',
  'ï¼®' => 'ï½Ž',
  'ï¼¯' => 'ï½',
  'ï¼°' => 'ï½',
  'ï¼±' => 'ï½‘',
  'ï¼²' => 'ï½’',
  'ï¼³' => 'ï½“',
  'ï¼´' => 'ï½”',
  'ï¼µ' => 'ï½•',
  'ï¼¶' => 'ï½–',
  'ï¼·' => 'ï½—',
  'ï¼¸' => 'ï½˜',
  'ï¼¹' => 'ï½™',
  'ï¼º' => 'ï½š',
  'ð€' => 'ð¨',
  'ð' => 'ð©',
  'ð‚' => 'ðª',
  'ðƒ' => 'ð«',
  'ð„' => 'ð¬',
  'ð…' => 'ð­',
  'ð†' => 'ð®',
  'ð‡' => 'ð¯',
  'ðˆ' => 'ð°',
  'ð‰' => 'ð±',
  'ðŠ' => 'ð²',
  'ð‹' => 'ð³',
  'ðŒ' => 'ð´',
  'ð' => 'ðµ',
  'ðŽ' => 'ð¶',
  'ð' => 'ð·',
  'ð' => 'ð¸',
  'ð‘' => 'ð¹',
  'ð’' => 'ðº',
  'ð“' => 'ð»',
  'ð”' => 'ð¼',
  'ð•' => 'ð½',
  'ð–' => 'ð¾',
  'ð—' => 'ð¿',
  'ð˜' => 'ð‘€',
  'ð™' => 'ð‘',
  'ðš' => 'ð‘‚',
  'ð›' => 'ð‘ƒ',
  'ðœ' => 'ð‘„',
  'ð' => 'ð‘…',
  'ðž' => 'ð‘†',
  'ðŸ' => 'ð‘‡',
  'ð ' => 'ð‘ˆ',
  'ð¡' => 'ð‘‰',
  'ð¢' => 'ð‘Š',
  'ð£' => 'ð‘‹',
  'ð¤' => 'ð‘Œ',
  'ð¥' => 'ð‘',
  'ð¦' => 'ð‘Ž',
  'ð§' => 'ð‘',
  'ð‘¢ ' => 'ð‘£€',
  'ð‘¢¡' => 'ð‘£',
  'ð‘¢¢' => 'ð‘£‚',
  'ð‘¢£' => 'ð‘£ƒ',
  'ð‘¢¤' => 'ð‘£„',
  'ð‘¢¥' => 'ð‘£…',
  'ð‘¢¦' => 'ð‘£†',
  'ð‘¢§' => 'ð‘£‡',
  'ð‘¢¨' => 'ð‘£ˆ',
  'ð‘¢©' => 'ð‘£‰',
  'ð‘¢ª' => 'ð‘£Š',
  'ð‘¢«' => 'ð‘£‹',
  'ð‘¢¬' => 'ð‘£Œ',
  'ð‘¢­' => 'ð‘£',
  'ð‘¢®' => 'ð‘£Ž',
  'ð‘¢¯' => 'ð‘£',
  'ð‘¢°' => 'ð‘£',
  'ð‘¢±' => 'ð‘£‘',
  'ð‘¢²' => 'ð‘£’',
  'ð‘¢³' => 'ð‘£“',
  'ð‘¢´' => 'ð‘£”',
  'ð‘¢µ' => 'ð‘£•',
  'ð‘¢¶' => 'ð‘£–',
  'ð‘¢·' => 'ð‘£—',
  'ð‘¢¸' => 'ð‘£˜',
  'ð‘¢¹' => 'ð‘£™',
  'ð‘¢º' => 'ð‘£š',
  'ð‘¢»' => 'ð‘£›',
  'ð‘¢¼' => 'ð‘£œ',
  'ð‘¢½' => 'ð‘£',
  'ð‘¢¾' => 'ð‘£ž',
  'ð‘¢¿' => 'ð‘£Ÿ',
);
<?php

// from Case_Ignorable in https://unicode.org/Public/UNIDATA/DerivedCoreProperties.txt

return '/(?<![\x{0027}\x{002E}\x{003A}\x{005E}\x{0060}\x{00A8}\x{00AD}\x{00AF}\x{00B4}\x{00B7}\x{00B8}\x{02B0}-\x{02C1}\x{02C2}-\x{02C5}\x{02C6}-\x{02D1}\x{02D2}-\x{02DF}\x{02E0}-\x{02E4}\x{02E5}-\x{02EB}\x{02EC}\x{02ED}\x{02EE}\x{02EF}-\x{02FF}\x{0300}-\x{036F}\x{0374}\x{0375}\x{037A}\x{0384}-\x{0385}\x{0387}\x{0483}-\x{0487}\x{0488}-\x{0489}\x{0559}\x{0591}-\x{05BD}\x{05BF}\x{05C1}-\x{05C2}\x{05C4}-\x{05C5}\x{05C7}\x{05F4}\x{0600}-\x{0605}\x{0610}-\x{061A}\x{061C}\x{0640}\x{064B}-\x{065F}\x{0670}\x{06D6}-\x{06DC}\x{06DD}\x{06DF}-\x{06E4}\x{06E5}-\x{06E6}\x{06E7}-\x{06E8}\x{06EA}-\x{06ED}\x{070F}\x{0711}\x{0730}-\x{074A}\x{07A6}-\x{07B0}\x{07EB}-\x{07F3}\x{07F4}-\x{07F5}\x{07FA}\x{07FD}\x{0816}-\x{0819}\x{081A}\x{081B}-\x{0823}\x{0824}\x{0825}-\x{0827}\x{0828}\x{0829}-\x{082D}\x{0859}-\x{085B}\x{08D3}-\x{08E1}\x{08E2}\x{08E3}-\x{0902}\x{093A}\x{093C}\x{0941}-\x{0948}\x{094D}\x{0951}-\x{0957}\x{0962}-\x{0963}\x{0971}\x{0981}\x{09BC}\x{09C1}-\x{09C4}\x{09CD}\x{09E2}-\x{09E3}\x{09FE}\x{0A01}-\x{0A02}\x{0A3C}\x{0A41}-\x{0A42}\x{0A47}-\x{0A48}\x{0A4B}-\x{0A4D}\x{0A51}\x{0A70}-\x{0A71}\x{0A75}\x{0A81}-\x{0A82}\x{0ABC}\x{0AC1}-\x{0AC5}\x{0AC7}-\x{0AC8}\x{0ACD}\x{0AE2}-\x{0AE3}\x{0AFA}-\x{0AFF}\x{0B01}\x{0B3C}\x{0B3F}\x{0B41}-\x{0B44}\x{0B4D}\x{0B56}\x{0B62}-\x{0B63}\x{0B82}\x{0BC0}\x{0BCD}\x{0C00}\x{0C04}\x{0C3E}-\x{0C40}\x{0C46}-\x{0C48}\x{0C4A}-\x{0C4D}\x{0C55}-\x{0C56}\x{0C62}-\x{0C63}\x{0C81}\x{0CBC}\x{0CBF}\x{0CC6}\x{0CCC}-\x{0CCD}\x{0CE2}-\x{0CE3}\x{0D00}-\x{0D01}\x{0D3B}-\x{0D3C}\x{0D41}-\x{0D44}\x{0D4D}\x{0D62}-\x{0D63}\x{0DCA}\x{0DD2}-\x{0DD4}\x{0DD6}\x{0E31}\x{0E34}-\x{0E3A}\x{0E46}\x{0E47}-\x{0E4E}\x{0EB1}\x{0EB4}-\x{0EB9}\x{0EBB}-\x{0EBC}\x{0EC6}\x{0EC8}-\x{0ECD}\x{0F18}-\x{0F19}\x{0F35}\x{0F37}\x{0F39}\x{0F71}-\x{0F7E}\x{0F80}-\x{0F84}\x{0F86}-\x{0F87}\x{0F8D}-\x{0F97}\x{0F99}-\x{0FBC}\x{0FC6}\x{102D}-\x{1030}\x{1032}-\x{1037}\x{1039}-\x{103A}\x{103D}-\x{103E}\x{1058}-\x{1059}\x{105E}-\x{1060}\x{1071}-\x{1074}\x{1082}\x{1085}-\x{1086}\x{108D}\x{109D}\x{10FC}\x{135D}-\x{135F}\x{1712}-\x{1714}\x{1732}-\x{1734}\x{1752}-\x{1753}\x{1772}-\x{1773}\x{17B4}-\x{17B5}\x{17B7}-\x{17BD}\x{17C6}\x{17C9}-\x{17D3}\x{17D7}\x{17DD}\x{180B}-\x{180D}\x{180E}\x{1843}\x{1885}-\x{1886}\x{18A9}\x{1920}-\x{1922}\x{1927}-\x{1928}\x{1932}\x{1939}-\x{193B}\x{1A17}-\x{1A18}\x{1A1B}\x{1A56}\x{1A58}-\x{1A5E}\x{1A60}\x{1A62}\x{1A65}-\x{1A6C}\x{1A73}-\x{1A7C}\x{1A7F}\x{1AA7}\x{1AB0}-\x{1ABD}\x{1ABE}\x{1B00}-\x{1B03}\x{1B34}\x{1B36}-\x{1B3A}\x{1B3C}\x{1B42}\x{1B6B}-\x{1B73}\x{1B80}-\x{1B81}\x{1BA2}-\x{1BA5}\x{1BA8}-\x{1BA9}\x{1BAB}-\x{1BAD}\x{1BE6}\x{1BE8}-\x{1BE9}\x{1BED}\x{1BEF}-\x{1BF1}\x{1C2C}-\x{1C33}\x{1C36}-\x{1C37}\x{1C78}-\x{1C7D}\x{1CD0}-\x{1CD2}\x{1CD4}-\x{1CE0}\x{1CE2}-\x{1CE8}\x{1CED}\x{1CF4}\x{1CF8}-\x{1CF9}\x{1D2C}-\x{1D6A}\x{1D78}\x{1D9B}-\x{1DBF}\x{1DC0}-\x{1DF9}\x{1DFB}-\x{1DFF}\x{1FBD}\x{1FBF}-\x{1FC1}\x{1FCD}-\x{1FCF}\x{1FDD}-\x{1FDF}\x{1FED}-\x{1FEF}\x{1FFD}-\x{1FFE}\x{200B}-\x{200F}\x{2018}\x{2019}\x{2024}\x{2027}\x{202A}-\x{202E}\x{2060}-\x{2064}\x{2066}-\x{206F}\x{2071}\x{207F}\x{2090}-\x{209C}\x{20D0}-\x{20DC}\x{20DD}-\x{20E0}\x{20E1}\x{20E2}-\x{20E4}\x{20E5}-\x{20F0}\x{2C7C}-\x{2C7D}\x{2CEF}-\x{2CF1}\x{2D6F}\x{2D7F}\x{2DE0}-\x{2DFF}\x{2E2F}\x{3005}\x{302A}-\x{302D}\x{3031}-\x{3035}\x{303B}\x{3099}-\x{309A}\x{309B}-\x{309C}\x{309D}-\x{309E}\x{30FC}-\x{30FE}\x{A015}\x{A4F8}-\x{A4FD}\x{A60C}\x{A66F}\x{A670}-\x{A672}\x{A674}-\x{A67D}\x{A67F}\x{A69C}-\x{A69D}\x{A69E}-\x{A69F}\x{A6F0}-\x{A6F1}\x{A700}-\x{A716}\x{A717}-\x{A71F}\x{A720}-\x{A721}\x{A770}\x{A788}\x{A789}-\x{A78A}\x{A7F8}-\x{A7F9}\x{A802}\x{A806}\x{A80B}\x{A825}-\x{A826}\x{A8C4}-\x{A8C5}\x{A8E0}-\x{A8F1}\x{A8FF}\x{A926}-\x{A92D}\x{A947}-\x{A951}\x{A980}-\x{A982}\x{A9B3}\x{A9B6}-\x{A9B9}\x{A9BC}\x{A9CF}\x{A9E5}\x{A9E6}\x{AA29}-\x{AA2E}\x{AA31}-\x{AA32}\x{AA35}-\x{AA36}\x{AA43}\x{AA4C}\x{AA70}\x{AA7C}\x{AAB0}\x{AAB2}-\x{AAB4}\x{AAB7}-\x{AAB8}\x{AABE}-\x{AABF}\x{AAC1}\x{AADD}\x{AAEC}-\x{AAED}\x{AAF3}-\x{AAF4}\x{AAF6}\x{AB5B}\x{AB5C}-\x{AB5F}\x{ABE5}\x{ABE8}\x{ABED}\x{FB1E}\x{FBB2}-\x{FBC1}\x{FE00}-\x{FE0F}\x{FE13}\x{FE20}-\x{FE2F}\x{FE52}\x{FE55}\x{FEFF}\x{FF07}\x{FF0E}\x{FF1A}\x{FF3E}\x{FF40}\x{FF70}\x{FF9E}-\x{FF9F}\x{FFE3}\x{FFF9}-\x{FFFB}\x{101FD}\x{102E0}\x{10376}-\x{1037A}\x{10A01}-\x{10A03}\x{10A05}-\x{10A06}\x{10A0C}-\x{10A0F}\x{10A38}-\x{10A3A}\x{10A3F}\x{10AE5}-\x{10AE6}\x{10D24}-\x{10D27}\x{10F46}-\x{10F50}\x{11001}\x{11038}-\x{11046}\x{1107F}-\x{11081}\x{110B3}-\x{110B6}\x{110B9}-\x{110BA}\x{110BD}\x{110CD}\x{11100}-\x{11102}\x{11127}-\x{1112B}\x{1112D}-\x{11134}\x{11173}\x{11180}-\x{11181}\x{111B6}-\x{111BE}\x{111C9}-\x{111CC}\x{1122F}-\x{11231}\x{11234}\x{11236}-\x{11237}\x{1123E}\x{112DF}\x{112E3}-\x{112EA}\x{11300}-\x{11301}\x{1133B}-\x{1133C}\x{11340}\x{11366}-\x{1136C}\x{11370}-\x{11374}\x{11438}-\x{1143F}\x{11442}-\x{11444}\x{11446}\x{1145E}\x{114B3}-\x{114B8}\x{114BA}\x{114BF}-\x{114C0}\x{114C2}-\x{114C3}\x{115B2}-\x{115B5}\x{115BC}-\x{115BD}\x{115BF}-\x{115C0}\x{115DC}-\x{115DD}\x{11633}-\x{1163A}\x{1163D}\x{1163F}-\x{11640}\x{116AB}\x{116AD}\x{116B0}-\x{116B5}\x{116B7}\x{1171D}-\x{1171F}\x{11722}-\x{11725}\x{11727}-\x{1172B}\x{1182F}-\x{11837}\x{11839}-\x{1183A}\x{11A01}-\x{11A0A}\x{11A33}-\x{11A38}\x{11A3B}-\x{11A3E}\x{11A47}\x{11A51}-\x{11A56}\x{11A59}-\x{11A5B}\x{11A8A}-\x{11A96}\x{11A98}-\x{11A99}\x{11C30}-\x{11C36}\x{11C38}-\x{11C3D}\x{11C3F}\x{11C92}-\x{11CA7}\x{11CAA}-\x{11CB0}\x{11CB2}-\x{11CB3}\x{11CB5}-\x{11CB6}\x{11D31}-\x{11D36}\x{11D3A}\x{11D3C}-\x{11D3D}\x{11D3F}-\x{11D45}\x{11D47}\x{11D90}-\x{11D91}\x{11D95}\x{11D97}\x{11EF3}-\x{11EF4}\x{16AF0}-\x{16AF4}\x{16B30}-\x{16B36}\x{16B40}-\x{16B43}\x{16F8F}-\x{16F92}\x{16F93}-\x{16F9F}\x{16FE0}-\x{16FE1}\x{1BC9D}-\x{1BC9E}\x{1BCA0}-\x{1BCA3}\x{1D167}-\x{1D169}\x{1D173}-\x{1D17A}\x{1D17B}-\x{1D182}\x{1D185}-\x{1D18B}\x{1D1AA}-\x{1D1AD}\x{1D242}-\x{1D244}\x{1DA00}-\x{1DA36}\x{1DA3B}-\x{1DA6C}\x{1DA75}\x{1DA84}\x{1DA9B}-\x{1DA9F}\x{1DAA1}-\x{1DAAF}\x{1E000}-\x{1E006}\x{1E008}-\x{1E018}\x{1E01B}-\x{1E021}\x{1E023}-\x{1E024}\x{1E026}-\x{1E02A}\x{1E8D0}-\x{1E8D6}\x{1E944}-\x{1E94A}\x{1F3FB}-\x{1F3FF}\x{E0001}\x{E0020}-\x{E007F}\x{E0100}-\x{E01EF}])(\pL)(\pL*+)/u';
<?php

return array(
  'a' => 'A',
  'b' => 'B',
  'c' => 'C',
  'd' => 'D',
  'e' => 'E',
  'f' => 'F',
  'g' => 'G',
  'h' => 'H',
  'i' => 'I',
  'j' => 'J',
  'k' => 'K',
  'l' => 'L',
  'm' => 'M',
  'n' => 'N',
  'o' => 'O',
  'p' => 'P',
  'q' => 'Q',
  'r' => 'R',
  's' => 'S',
  't' => 'T',
  'u' => 'U',
  'v' => 'V',
  'w' => 'W',
  'x' => 'X',
  'y' => 'Y',
  'z' => 'Z',
  'Âµ' => 'Îœ',
  'Ã ' => 'Ã€',
  'Ã¡' => 'Ã',
  'Ã¢' => 'Ã‚',
  'Ã£' => 'Ãƒ',
  'Ã¤' => 'Ã„',
  'Ã¥' => 'Ã…',
  'Ã¦' => 'Ã†',
  'Ã§' => 'Ã‡',
  'Ã¨' => 'Ãˆ',
  'Ã©' => 'Ã‰',
  'Ãª' => 'ÃŠ',
  'Ã«' => 'Ã‹',
  'Ã¬' => 'ÃŒ',
  'Ã­' => 'Ã',
  'Ã®' => 'ÃŽ',
  'Ã¯' => 'Ã',
  'Ã°' => 'Ã',
  'Ã±' => 'Ã‘',
  'Ã²' => 'Ã’',
  'Ã³' => 'Ã“',
  'Ã´' => 'Ã”',
  'Ãµ' => 'Ã•',
  'Ã¶' => 'Ã–',
  'Ã¸' => 'Ã˜',
  'Ã¹' => 'Ã™',
  'Ãº' => 'Ãš',
  'Ã»' => 'Ã›',
  'Ã¼' => 'Ãœ',
  'Ã½' => 'Ã',
  'Ã¾' => 'Ãž',
  'Ã¿' => 'Å¸',
  'Ä' => 'Ä€',
  'Äƒ' => 'Ä‚',
  'Ä…' => 'Ä„',
  'Ä‡' => 'Ä†',
  'Ä‰' => 'Äˆ',
  'Ä‹' => 'ÄŠ',
  'Ä' => 'ÄŒ',
  'Ä' => 'ÄŽ',
  'Ä‘' => 'Ä',
  'Ä“' => 'Ä’',
  'Ä•' => 'Ä”',
  'Ä—' => 'Ä–',
  'Ä™' => 'Ä˜',
  'Ä›' => 'Äš',
  'Ä' => 'Äœ',
  'ÄŸ' => 'Äž',
  'Ä¡' => 'Ä ',
  'Ä£' => 'Ä¢',
  'Ä¥' => 'Ä¤',
  'Ä§' => 'Ä¦',
  'Ä©' => 'Ä¨',
  'Ä«' => 'Äª',
  'Ä­' => 'Ä¬',
  'Ä¯' => 'Ä®',
  'Ä±' => 'I',
  'Ä³' => 'Ä²',
  'Äµ' => 'Ä´',
  'Ä·' => 'Ä¶',
  'Äº' => 'Ä¹',
  'Ä¼' => 'Ä»',
  'Ä¾' => 'Ä½',
  'Å€' => 'Ä¿',
  'Å‚' => 'Å',
  'Å„' => 'Åƒ',
  'Å†' => 'Å…',
  'Åˆ' => 'Å‡',
  'Å‹' => 'ÅŠ',
  'Å' => 'ÅŒ',
  'Å' => 'ÅŽ',
  'Å‘' => 'Å',
  'Å“' => 'Å’',
  'Å•' => 'Å”',
  'Å—' => 'Å–',
  'Å™' => 'Å˜',
  'Å›' => 'Åš',
  'Å' => 'Åœ',
  'ÅŸ' => 'Åž',
  'Å¡' => 'Å ',
  'Å£' => 'Å¢',
  'Å¥' => 'Å¤',
  'Å§' => 'Å¦',
  'Å©' => 'Å¨',
  'Å«' => 'Åª',
  'Å­' => 'Å¬',
  'Å¯' => 'Å®',
  'Å±' => 'Å°',
  'Å³' => 'Å²',
  'Åµ' => 'Å´',
  'Å·' => 'Å¶',
  'Åº' => 'Å¹',
  'Å¼' => 'Å»',
  'Å¾' => 'Å½',
  'Å¿' => 'S',
  'Æ€' => 'Éƒ',
  'Æƒ' => 'Æ‚',
  'Æ…' => 'Æ„',
  'Æˆ' => 'Æ‡',
  'ÆŒ' => 'Æ‹',
  'Æ’' => 'Æ‘',
  'Æ•' => 'Ç¶',
  'Æ™' => 'Æ˜',
  'Æš' => 'È½',
  'Æž' => 'È ',
  'Æ¡' => 'Æ ',
  'Æ£' => 'Æ¢',
  'Æ¥' => 'Æ¤',
  'Æ¨' => 'Æ§',
  'Æ­' => 'Æ¬',
  'Æ°' => 'Æ¯',
  'Æ´' => 'Æ³',
  'Æ¶' => 'Æµ',
  'Æ¹' => 'Æ¸',
  'Æ½' => 'Æ¼',
  'Æ¿' => 'Ç·',
  'Ç…' => 'Ç„',
  'Ç†' => 'Ç„',
  'Çˆ' => 'Ç‡',
  'Ç‰' => 'Ç‡',
  'Ç‹' => 'ÇŠ',
  'ÇŒ' => 'ÇŠ',
  'ÇŽ' => 'Ç',
  'Ç' => 'Ç',
  'Ç’' => 'Ç‘',
  'Ç”' => 'Ç“',
  'Ç–' => 'Ç•',
  'Ç˜' => 'Ç—',
  'Çš' => 'Ç™',
  'Çœ' => 'Ç›',
  'Ç' => 'ÆŽ',
  'ÇŸ' => 'Çž',
  'Ç¡' => 'Ç ',
  'Ç£' => 'Ç¢',
  'Ç¥' => 'Ç¤',
  'Ç§' => 'Ç¦',
  'Ç©' => 'Ç¨',
  'Ç«' => 'Çª',
  'Ç­' => 'Ç¬',
  'Ç¯' => 'Ç®',
  'Ç²' => 'Ç±',
  'Ç³' => 'Ç±',
  'Çµ' => 'Ç´',
  'Ç¹' => 'Ç¸',
  'Ç»' => 'Çº',
  'Ç½' => 'Ç¼',
  'Ç¿' => 'Ç¾',
  'È' => 'È€',
  'Èƒ' => 'È‚',
  'È…' => 'È„',
  'È‡' => 'È†',
  'È‰' => 'Èˆ',
  'È‹' => 'ÈŠ',
  'È' => 'ÈŒ',
  'È' => 'ÈŽ',
  'È‘' => 'È',
  'È“' => 'È’',
  'È•' => 'È”',
  'È—' => 'È–',
  'È™' => 'È˜',
  'È›' => 'Èš',
  'È' => 'Èœ',
  'ÈŸ' => 'Èž',
  'È£' => 'È¢',
  'È¥' => 'È¤',
  'È§' => 'È¦',
  'È©' => 'È¨',
  'È«' => 'Èª',
  'È­' => 'È¬',
  'È¯' => 'È®',
  'È±' => 'È°',
  'È³' => 'È²',
  'È¼' => 'È»',
  'È¿' => 'â±¾',
  'É€' => 'â±¿',
  'É‚' => 'É',
  'É‡' => 'É†',
  'É‰' => 'Éˆ',
  'É‹' => 'ÉŠ',
  'É' => 'ÉŒ',
  'É' => 'ÉŽ',
  'É' => 'â±¯',
  'É‘' => 'â±­',
  'É’' => 'â±°',
  'É“' => 'Æ',
  'É”' => 'Æ†',
  'É–' => 'Æ‰',
  'É—' => 'ÆŠ',
  'É™' => 'Æ',
  'É›' => 'Æ',
  'Éœ' => 'êž«',
  'É ' => 'Æ“',
  'É¡' => 'êž¬',
  'É£' => 'Æ”',
  'É¥' => 'êž',
  'É¦' => 'êžª',
  'É¨' => 'Æ—',
  'É©' => 'Æ–',
  'É«' => 'â±¢',
  'É¬' => 'êž­',
  'É¯' => 'Æœ',
  'É±' => 'â±®',
  'É²' => 'Æ',
  'Éµ' => 'ÆŸ',
  'É½' => 'â±¤',
  'Ê€' => 'Æ¦',
  'Êƒ' => 'Æ©',
  'Ê‡' => 'êž±',
  'Êˆ' => 'Æ®',
  'Ê‰' => 'É„',
  'ÊŠ' => 'Æ±',
  'Ê‹' => 'Æ²',
  'ÊŒ' => 'É…',
  'Ê’' => 'Æ·',
  'Êž' => 'êž°',
  'Í…' => 'Î™',
  'Í±' => 'Í°',
  'Í³' => 'Í²',
  'Í·' => 'Í¶',
  'Í»' => 'Ï½',
  'Í¼' => 'Ï¾',
  'Í½' => 'Ï¿',
  'Î¬' => 'Î†',
  'Î­' => 'Îˆ',
  'Î®' => 'Î‰',
  'Î¯' => 'ÎŠ',
  'Î±' => 'Î‘',
  'Î²' => 'Î’',
  'Î³' => 'Î“',
  'Î´' => 'Î”',
  'Îµ' => 'Î•',
  'Î¶' => 'Î–',
  'Î·' => 'Î—',
  'Î¸' => 'Î˜',
  'Î¹' => 'Î™',
  'Îº' => 'Îš',
  'Î»' => 'Î›',
  'Î¼' => 'Îœ',
  'Î½' => 'Î',
  'Î¾' => 'Îž',
  'Î¿' => 'ÎŸ',
  'Ï€' => 'Î ',
  'Ï' => 'Î¡',
  'Ï‚' => 'Î£',
  'Ïƒ' => 'Î£',
  'Ï„' => 'Î¤',
  'Ï…' => 'Î¥',
  'Ï†' => 'Î¦',
  'Ï‡' => 'Î§',
  'Ïˆ' => 'Î¨',
  'Ï‰' => 'Î©',
  'ÏŠ' => 'Îª',
  'Ï‹' => 'Î«',
  'ÏŒ' => 'ÎŒ',
  'Ï' => 'ÎŽ',
  'ÏŽ' => 'Î',
  'Ï' => 'Î’',
  'Ï‘' => 'Î˜',
  'Ï•' => 'Î¦',
  'Ï–' => 'Î ',
  'Ï—' => 'Ï',
  'Ï™' => 'Ï˜',
  'Ï›' => 'Ïš',
  'Ï' => 'Ïœ',
  'ÏŸ' => 'Ïž',
  'Ï¡' => 'Ï ',
  'Ï£' => 'Ï¢',
  'Ï¥' => 'Ï¤',
  'Ï§' => 'Ï¦',
  'Ï©' => 'Ï¨',
  'Ï«' => 'Ïª',
  'Ï­' => 'Ï¬',
  'Ï¯' => 'Ï®',
  'Ï°' => 'Îš',
  'Ï±' => 'Î¡',
  'Ï²' => 'Ï¹',
  'Ï³' => 'Í¿',
  'Ïµ' => 'Î•',
  'Ï¸' => 'Ï·',
  'Ï»' => 'Ïº',
  'Ð°' => 'Ð',
  'Ð±' => 'Ð‘',
  'Ð²' => 'Ð’',
  'Ð³' => 'Ð“',
  'Ð´' => 'Ð”',
  'Ðµ' => 'Ð•',
  'Ð¶' => 'Ð–',
  'Ð·' => 'Ð—',
  'Ð¸' => 'Ð˜',
  'Ð¹' => 'Ð™',
  'Ðº' => 'Ðš',
  'Ð»' => 'Ð›',
  'Ð¼' => 'Ðœ',
  'Ð½' => 'Ð',
  'Ð¾' => 'Ðž',
  'Ð¿' => 'ÐŸ',
  'Ñ€' => 'Ð ',
  'Ñ' => 'Ð¡',
  'Ñ‚' => 'Ð¢',
  'Ñƒ' => 'Ð£',
  'Ñ„' => 'Ð¤',
  'Ñ…' => 'Ð¥',
  'Ñ†' => 'Ð¦',
  'Ñ‡' => 'Ð§',
  'Ñˆ' => 'Ð¨',
  'Ñ‰' => 'Ð©',
  'ÑŠ' => 'Ðª',
  'Ñ‹' => 'Ð«',
  'ÑŒ' => 'Ð¬',
  'Ñ' => 'Ð­',
  'ÑŽ' => 'Ð®',
  'Ñ' => 'Ð¯',
  'Ñ' => 'Ð€',
  'Ñ‘' => 'Ð',
  'Ñ’' => 'Ð‚',
  'Ñ“' => 'Ðƒ',
  'Ñ”' => 'Ð„',
  'Ñ•' => 'Ð…',
  'Ñ–' => 'Ð†',
  'Ñ—' => 'Ð‡',
  'Ñ˜' => 'Ðˆ',
  'Ñ™' => 'Ð‰',
  'Ñš' => 'ÐŠ',
  'Ñ›' => 'Ð‹',
  'Ñœ' => 'ÐŒ',
  'Ñ' => 'Ð',
  'Ñž' => 'ÐŽ',
  'ÑŸ' => 'Ð',
  'Ñ¡' => 'Ñ ',
  'Ñ£' => 'Ñ¢',
  'Ñ¥' => 'Ñ¤',
  'Ñ§' => 'Ñ¦',
  'Ñ©' => 'Ñ¨',
  'Ñ«' => 'Ñª',
  'Ñ­' => 'Ñ¬',
  'Ñ¯' => 'Ñ®',
  'Ñ±' => 'Ñ°',
  'Ñ³' => 'Ñ²',
  'Ñµ' => 'Ñ´',
  'Ñ·' => 'Ñ¶',
  'Ñ¹' => 'Ñ¸',
  'Ñ»' => 'Ñº',
  'Ñ½' => 'Ñ¼',
  'Ñ¿' => 'Ñ¾',
  'Ò' => 'Ò€',
  'Ò‹' => 'ÒŠ',
  'Ò' => 'ÒŒ',
  'Ò' => 'ÒŽ',
  'Ò‘' => 'Ò',
  'Ò“' => 'Ò’',
  'Ò•' => 'Ò”',
  'Ò—' => 'Ò–',
  'Ò™' => 'Ò˜',
  'Ò›' => 'Òš',
  'Ò' => 'Òœ',
  'ÒŸ' => 'Òž',
  'Ò¡' => 'Ò ',
  'Ò£' => 'Ò¢',
  'Ò¥' => 'Ò¤',
  'Ò§' => 'Ò¦',
  'Ò©' => 'Ò¨',
  'Ò«' => 'Òª',
  'Ò­' => 'Ò¬',
  'Ò¯' => 'Ò®',
  'Ò±' => 'Ò°',
  'Ò³' => 'Ò²',
  'Òµ' => 'Ò´',
  'Ò·' => 'Ò¶',
  'Ò¹' => 'Ò¸',
  'Ò»' => 'Òº',
  'Ò½' => 'Ò¼',
  'Ò¿' => 'Ò¾',
  'Ó‚' => 'Ó',
  'Ó„' => 'Óƒ',
  'Ó†' => 'Ó…',
  'Óˆ' => 'Ó‡',
  'ÓŠ' => 'Ó‰',
  'ÓŒ' => 'Ó‹',
  'ÓŽ' => 'Ó',
  'Ó' => 'Ó€',
  'Ó‘' => 'Ó',
  'Ó“' => 'Ó’',
  'Ó•' => 'Ó”',
  'Ó—' => 'Ó–',
  'Ó™' => 'Ó˜',
  'Ó›' => 'Óš',
  'Ó' => 'Óœ',
  'ÓŸ' => 'Óž',
  'Ó¡' => 'Ó ',
  'Ó£' => 'Ó¢',
  'Ó¥' => 'Ó¤',
  'Ó§' => 'Ó¦',
  'Ó©' => 'Ó¨',
  'Ó«' => 'Óª',
  'Ó­' => 'Ó¬',
  'Ó¯' => 'Ó®',
  'Ó±' => 'Ó°',
  'Ó³' => 'Ó²',
  'Óµ' => 'Ó´',
  'Ó·' => 'Ó¶',
  'Ó¹' => 'Ó¸',
  'Ó»' => 'Óº',
  'Ó½' => 'Ó¼',
  'Ó¿' => 'Ó¾',
  'Ô' => 'Ô€',
  'Ôƒ' => 'Ô‚',
  'Ô…' => 'Ô„',
  'Ô‡' => 'Ô†',
  'Ô‰' => 'Ôˆ',
  'Ô‹' => 'ÔŠ',
  'Ô' => 'ÔŒ',
  'Ô' => 'ÔŽ',
  'Ô‘' => 'Ô',
  'Ô“' => 'Ô’',
  'Ô•' => 'Ô”',
  'Ô—' => 'Ô–',
  'Ô™' => 'Ô˜',
  'Ô›' => 'Ôš',
  'Ô' => 'Ôœ',
  'ÔŸ' => 'Ôž',
  'Ô¡' => 'Ô ',
  'Ô£' => 'Ô¢',
  'Ô¥' => 'Ô¤',
  'Ô§' => 'Ô¦',
  'Ô©' => 'Ô¨',
  'Ô«' => 'Ôª',
  'Ô­' => 'Ô¬',
  'Ô¯' => 'Ô®',
  'Õ¡' => 'Ô±',
  'Õ¢' => 'Ô²',
  'Õ£' => 'Ô³',
  'Õ¤' => 'Ô´',
  'Õ¥' => 'Ôµ',
  'Õ¦' => 'Ô¶',
  'Õ§' => 'Ô·',
  'Õ¨' => 'Ô¸',
  'Õ©' => 'Ô¹',
  'Õª' => 'Ôº',
  'Õ«' => 'Ô»',
  'Õ¬' => 'Ô¼',
  'Õ­' => 'Ô½',
  'Õ®' => 'Ô¾',
  'Õ¯' => 'Ô¿',
  'Õ°' => 'Õ€',
  'Õ±' => 'Õ',
  'Õ²' => 'Õ‚',
  'Õ³' => 'Õƒ',
  'Õ´' => 'Õ„',
  'Õµ' => 'Õ…',
  'Õ¶' => 'Õ†',
  'Õ·' => 'Õ‡',
  'Õ¸' => 'Õˆ',
  'Õ¹' => 'Õ‰',
  'Õº' => 'ÕŠ',
  'Õ»' => 'Õ‹',
  'Õ¼' => 'ÕŒ',
  'Õ½' => 'Õ',
  'Õ¾' => 'ÕŽ',
  'Õ¿' => 'Õ',
  'Ö€' => 'Õ',
  'Ö' => 'Õ‘',
  'Ö‚' => 'Õ’',
  'Öƒ' => 'Õ“',
  'Ö„' => 'Õ”',
  'Ö…' => 'Õ•',
  'Ö†' => 'Õ–',
  'áµ¹' => 'ê½',
  'áµ½' => 'â±£',
  'á¸' => 'á¸€',
  'á¸ƒ' => 'á¸‚',
  'á¸…' => 'á¸„',
  'á¸‡' => 'á¸†',
  'á¸‰' => 'á¸ˆ',
  'á¸‹' => 'á¸Š',
  'á¸' => 'á¸Œ',
  'á¸' => 'á¸Ž',
  'á¸‘' => 'á¸',
  'á¸“' => 'á¸’',
  'á¸•' => 'á¸”',
  'á¸—' => 'á¸–',
  'á¸™' => 'á¸˜',
  'á¸›' => 'á¸š',
  'á¸' => 'á¸œ',
  'á¸Ÿ' => 'á¸ž',
  'á¸¡' => 'á¸ ',
  'á¸£' => 'á¸¢',
  'á¸¥' => 'á¸¤',
  'á¸§' => 'á¸¦',
  'á¸©' => 'á¸¨',
  'á¸«' => 'á¸ª',
  'á¸­' => 'á¸¬',
  'á¸¯' => 'á¸®',
  'á¸±' => 'á¸°',
  'á¸³' => 'á¸²',
  'á¸µ' => 'á¸´',
  'á¸·' => 'á¸¶',
  'á¸¹' => 'á¸¸',
  'á¸»' => 'á¸º',
  'á¸½' => 'á¸¼',
  'á¸¿' => 'á¸¾',
  'á¹' => 'á¹€',
  'á¹ƒ' => 'á¹‚',
  'á¹…' => 'á¹„',
  'á¹‡' => 'á¹†',
  'á¹‰' => 'á¹ˆ',
  'á¹‹' => 'á¹Š',
  'á¹' => 'á¹Œ',
  'á¹' => 'á¹Ž',
  'á¹‘' => 'á¹',
  'á¹“' => 'á¹’',
  'á¹•' => 'á¹”',
  'á¹—' => 'á¹–',
  'á¹™' => 'á¹˜',
  'á¹›' => 'á¹š',
  'á¹' => 'á¹œ',
  'á¹Ÿ' => 'á¹ž',
  'á¹¡' => 'á¹ ',
  'á¹£' => 'á¹¢',
  'á¹¥' => 'á¹¤',
  'á¹§' => 'á¹¦',
  'á¹©' => 'á¹¨',
  'á¹«' => 'á¹ª',
  'á¹­' => 'á¹¬',
  'á¹¯' => 'á¹®',
  'á¹±' => 'á¹°',
  'á¹³' => 'á¹²',
  'á¹µ' => 'á¹´',
  'á¹·' => 'á¹¶',
  'á¹¹' => 'á¹¸',
  'á¹»' => 'á¹º',
  'á¹½' => 'á¹¼',
  'á¹¿' => 'á¹¾',
  'áº' => 'áº€',
  'áºƒ' => 'áº‚',
  'áº…' => 'áº„',
  'áº‡' => 'áº†',
  'áº‰' => 'áºˆ',
  'áº‹' => 'áºŠ',
  'áº' => 'áºŒ',
  'áº' => 'áºŽ',
  'áº‘' => 'áº',
  'áº“' => 'áº’',
  'áº•' => 'áº”',
  'áº›' => 'á¹ ',
  'áº¡' => 'áº ',
  'áº£' => 'áº¢',
  'áº¥' => 'áº¤',
  'áº§' => 'áº¦',
  'áº©' => 'áº¨',
  'áº«' => 'áºª',
  'áº­' => 'áº¬',
  'áº¯' => 'áº®',
  'áº±' => 'áº°',
  'áº³' => 'áº²',
  'áºµ' => 'áº´',
  'áº·' => 'áº¶',
  'áº¹' => 'áº¸',
  'áº»' => 'áºº',
  'áº½' => 'áº¼',
  'áº¿' => 'áº¾',
  'á»' => 'á»€',
  'á»ƒ' => 'á»‚',
  'á»…' => 'á»„',
  'á»‡' => 'á»†',
  'á»‰' => 'á»ˆ',
  'á»‹' => 'á»Š',
  'á»' => 'á»Œ',
  'á»' => 'á»Ž',
  'á»‘' => 'á»',
  'á»“' => 'á»’',
  'á»•' => 'á»”',
  'á»—' => 'á»–',
  'á»™' => 'á»˜',
  'á»›' => 'á»š',
  'á»' => 'á»œ',
  'á»Ÿ' => 'á»ž',
  'á»¡' => 'á» ',
  'á»£' => 'á»¢',
  'á»¥' => 'á»¤',
  'á»§' => 'á»¦',
  'á»©' => 'á»¨',
  'á»«' => 'á»ª',
  'á»­' => 'á»¬',
  'á»¯' => 'á»®',
  'á»±' => 'á»°',
  'á»³' => 'á»²',
  'á»µ' => 'á»´',
  'á»·' => 'á»¶',
  'á»¹' => 'á»¸',
  'á»»' => 'á»º',
  'á»½' => 'á»¼',
  'á»¿' => 'á»¾',
  'á¼€' => 'á¼ˆ',
  'á¼' => 'á¼‰',
  'á¼‚' => 'á¼Š',
  'á¼ƒ' => 'á¼‹',
  'á¼„' => 'á¼Œ',
  'á¼…' => 'á¼',
  'á¼†' => 'á¼Ž',
  'á¼‡' => 'á¼',
  'á¼' => 'á¼˜',
  'á¼‘' => 'á¼™',
  'á¼’' => 'á¼š',
  'á¼“' => 'á¼›',
  'á¼”' => 'á¼œ',
  'á¼•' => 'á¼',
  'á¼ ' => 'á¼¨',
  'á¼¡' => 'á¼©',
  'á¼¢' => 'á¼ª',
  'á¼£' => 'á¼«',
  'á¼¤' => 'á¼¬',
  'á¼¥' => 'á¼­',
  'á¼¦' => 'á¼®',
  'á¼§' => 'á¼¯',
  'á¼°' => 'á¼¸',
  'á¼±' => 'á¼¹',
  'á¼²' => 'á¼º',
  'á¼³' => 'á¼»',
  'á¼´' => 'á¼¼',
  'á¼µ' => 'á¼½',
  'á¼¶' => 'á¼¾',
  'á¼·' => 'á¼¿',
  'á½€' => 'á½ˆ',
  'á½' => 'á½‰',
  'á½‚' => 'á½Š',
  'á½ƒ' => 'á½‹',
  'á½„' => 'á½Œ',
  'á½…' => 'á½',
  'á½‘' => 'á½™',
  'á½“' => 'á½›',
  'á½•' => 'á½',
  'á½—' => 'á½Ÿ',
  'á½ ' => 'á½¨',
  'á½¡' => 'á½©',
  'á½¢' => 'á½ª',
  'á½£' => 'á½«',
  'á½¤' => 'á½¬',
  'á½¥' => 'á½­',
  'á½¦' => 'á½®',
  'á½§' => 'á½¯',
  'á½°' => 'á¾º',
  'á½±' => 'á¾»',
  'á½²' => 'á¿ˆ',
  'á½³' => 'á¿‰',
  'á½´' => 'á¿Š',
  'á½µ' => 'á¿‹',
  'á½¶' => 'á¿š',
  'á½·' => 'á¿›',
  'á½¸' => 'á¿¸',
  'á½¹' => 'á¿¹',
  'á½º' => 'á¿ª',
  'á½»' => 'á¿«',
  'á½¼' => 'á¿º',
  'á½½' => 'á¿»',
  'á¾€' => 'á¾ˆ',
  'á¾' => 'á¾‰',
  'á¾‚' => 'á¾Š',
  'á¾ƒ' => 'á¾‹',
  'á¾„' => 'á¾Œ',
  'á¾…' => 'á¾',
  'á¾†' => 'á¾Ž',
  'á¾‡' => 'á¾',
  'á¾' => 'á¾˜',
  'á¾‘' => 'á¾™',
  'á¾’' => 'á¾š',
  'á¾“' => 'á¾›',
  'á¾”' => 'á¾œ',
  'á¾•' => 'á¾',
  'á¾–' => 'á¾ž',
  'á¾—' => 'á¾Ÿ',
  'á¾ ' => 'á¾¨',
  'á¾¡' => 'á¾©',
  'á¾¢' => 'á¾ª',
  'á¾£' => 'á¾«',
  'á¾¤' => 'á¾¬',
  'á¾¥' => 'á¾­',
  'á¾¦' => 'á¾®',
  'á¾§' => 'á¾¯',
  'á¾°' => 'á¾¸',
  'á¾±' => 'á¾¹',
  'á¾³' => 'á¾¼',
  'á¾¾' => 'Î™',
  'á¿ƒ' => 'á¿Œ',
  'á¿' => 'á¿˜',
  'á¿‘' => 'á¿™',
  'á¿ ' => 'á¿¨',
  'á¿¡' => 'á¿©',
  'á¿¥' => 'á¿¬',
  'á¿³' => 'á¿¼',
  'â…Ž' => 'â„²',
  'â…°' => 'â… ',
  'â…±' => 'â…¡',
  'â…²' => 'â…¢',
  'â…³' => 'â…£',
  'â…´' => 'â…¤',
  'â…µ' => 'â…¥',
  'â…¶' => 'â…¦',
  'â…·' => 'â…§',
  'â…¸' => 'â…¨',
  'â…¹' => 'â…©',
  'â…º' => 'â…ª',
  'â…»' => 'â…«',
  'â…¼' => 'â…¬',
  'â…½' => 'â…­',
  'â…¾' => 'â…®',
  'â…¿' => 'â…¯',
  'â†„' => 'â†ƒ',
  'â“' => 'â’¶',
  'â“‘' => 'â’·',
  'â“’' => 'â’¸',
  'â““' => 'â’¹',
  'â“”' => 'â’º',
  'â“•' => 'â’»',
  'â“–' => 'â’¼',
  'â“—' => 'â’½',
  'â“˜' => 'â’¾',
  'â“™' => 'â’¿',
  'â“š' => 'â“€',
  'â“›' => 'â“',
  'â“œ' => 'â“‚',
  'â“' => 'â“ƒ',
  'â“ž' => 'â“„',
  'â“Ÿ' => 'â“…',
  'â“ ' => 'â“†',
  'â“¡' => 'â“‡',
  'â“¢' => 'â“ˆ',
  'â“£' => 'â“‰',
  'â“¤' => 'â“Š',
  'â“¥' => 'â“‹',
  'â“¦' => 'â“Œ',
  'â“§' => 'â“',
  'â“¨' => 'â“Ž',
  'â“©' => 'â“',
  'â°°' => 'â°€',
  'â°±' => 'â°',
  'â°²' => 'â°‚',
  'â°³' => 'â°ƒ',
  'â°´' => 'â°„',
  'â°µ' => 'â°…',
  'â°¶' => 'â°†',
  'â°·' => 'â°‡',
  'â°¸' => 'â°ˆ',
  'â°¹' => 'â°‰',
  'â°º' => 'â°Š',
  'â°»' => 'â°‹',
  'â°¼' => 'â°Œ',
  'â°½' => 'â°',
  'â°¾' => 'â°Ž',
  'â°¿' => 'â°',
  'â±€' => 'â°',
  'â±' => 'â°‘',
  'â±‚' => 'â°’',
  'â±ƒ' => 'â°“',
  'â±„' => 'â°”',
  'â±…' => 'â°•',
  'â±†' => 'â°–',
  'â±‡' => 'â°—',
  'â±ˆ' => 'â°˜',
  'â±‰' => 'â°™',
  'â±Š' => 'â°š',
  'â±‹' => 'â°›',
  'â±Œ' => 'â°œ',
  'â±' => 'â°',
  'â±Ž' => 'â°ž',
  'â±' => 'â°Ÿ',
  'â±' => 'â° ',
  'â±‘' => 'â°¡',
  'â±’' => 'â°¢',
  'â±“' => 'â°£',
  'â±”' => 'â°¤',
  'â±•' => 'â°¥',
  'â±–' => 'â°¦',
  'â±—' => 'â°§',
  'â±˜' => 'â°¨',
  'â±™' => 'â°©',
  'â±š' => 'â°ª',
  'â±›' => 'â°«',
  'â±œ' => 'â°¬',
  'â±' => 'â°­',
  'â±ž' => 'â°®',
  'â±¡' => 'â± ',
  'â±¥' => 'Èº',
  'â±¦' => 'È¾',
  'â±¨' => 'â±§',
  'â±ª' => 'â±©',
  'â±¬' => 'â±«',
  'â±³' => 'â±²',
  'â±¶' => 'â±µ',
  'â²' => 'â²€',
  'â²ƒ' => 'â²‚',
  'â²…' => 'â²„',
  'â²‡' => 'â²†',
  'â²‰' => 'â²ˆ',
  'â²‹' => 'â²Š',
  'â²' => 'â²Œ',
  'â²' => 'â²Ž',
  'â²‘' => 'â²',
  'â²“' => 'â²’',
  'â²•' => 'â²”',
  'â²—' => 'â²–',
  'â²™' => 'â²˜',
  'â²›' => 'â²š',
  'â²' => 'â²œ',
  'â²Ÿ' => 'â²ž',
  'â²¡' => 'â² ',
  'â²£' => 'â²¢',
  'â²¥' => 'â²¤',
  'â²§' => 'â²¦',
  'â²©' => 'â²¨',
  'â²«' => 'â²ª',
  'â²­' => 'â²¬',
  'â²¯' => 'â²®',
  'â²±' => 'â²°',
  'â²³' => 'â²²',
  'â²µ' => 'â²´',
  'â²·' => 'â²¶',
  'â²¹' => 'â²¸',
  'â²»' => 'â²º',
  'â²½' => 'â²¼',
  'â²¿' => 'â²¾',
  'â³' => 'â³€',
  'â³ƒ' => 'â³‚',
  'â³…' => 'â³„',
  'â³‡' => 'â³†',
  'â³‰' => 'â³ˆ',
  'â³‹' => 'â³Š',
  'â³' => 'â³Œ',
  'â³' => 'â³Ž',
  'â³‘' => 'â³',
  'â³“' => 'â³’',
  'â³•' => 'â³”',
  'â³—' => 'â³–',
  'â³™' => 'â³˜',
  'â³›' => 'â³š',
  'â³' => 'â³œ',
  'â³Ÿ' => 'â³ž',
  'â³¡' => 'â³ ',
  'â³£' => 'â³¢',
  'â³¬' => 'â³«',
  'â³®' => 'â³­',
  'â³³' => 'â³²',
  'â´€' => 'á‚ ',
  'â´' => 'á‚¡',
  'â´‚' => 'á‚¢',
  'â´ƒ' => 'á‚£',
  'â´„' => 'á‚¤',
  'â´…' => 'á‚¥',
  'â´†' => 'á‚¦',
  'â´‡' => 'á‚§',
  'â´ˆ' => 'á‚¨',
  'â´‰' => 'á‚©',
  'â´Š' => 'á‚ª',
  'â´‹' => 'á‚«',
  'â´Œ' => 'á‚¬',
  'â´' => 'á‚­',
  'â´Ž' => 'á‚®',
  'â´' => 'á‚¯',
  'â´' => 'á‚°',
  'â´‘' => 'á‚±',
  'â´’' => 'á‚²',
  'â´“' => 'á‚³',
  'â´”' => 'á‚´',
  'â´•' => 'á‚µ',
  'â´–' => 'á‚¶',
  'â´—' => 'á‚·',
  'â´˜' => 'á‚¸',
  'â´™' => 'á‚¹',
  'â´š' => 'á‚º',
  'â´›' => 'á‚»',
  'â´œ' => 'á‚¼',
  'â´' => 'á‚½',
  'â´ž' => 'á‚¾',
  'â´Ÿ' => 'á‚¿',
  'â´ ' => 'áƒ€',
  'â´¡' => 'áƒ',
  'â´¢' => 'áƒ‚',
  'â´£' => 'áƒƒ',
  'â´¤' => 'áƒ„',
  'â´¥' => 'áƒ…',
  'â´§' => 'áƒ‡',
  'â´­' => 'áƒ',
  'ê™' => 'ê™€',
  'ê™ƒ' => 'ê™‚',
  'ê™…' => 'ê™„',
  'ê™‡' => 'ê™†',
  'ê™‰' => 'ê™ˆ',
  'ê™‹' => 'ê™Š',
  'ê™' => 'ê™Œ',
  'ê™' => 'ê™Ž',
  'ê™‘' => 'ê™',
  'ê™“' => 'ê™’',
  'ê™•' => 'ê™”',
  'ê™—' => 'ê™–',
  'ê™™' => 'ê™˜',
  'ê™›' => 'ê™š',
  'ê™' => 'ê™œ',
  'ê™Ÿ' => 'ê™ž',
  'ê™¡' => 'ê™ ',
  'ê™£' => 'ê™¢',
  'ê™¥' => 'ê™¤',
  'ê™§' => 'ê™¦',
  'ê™©' => 'ê™¨',
  'ê™«' => 'ê™ª',
  'ê™­' => 'ê™¬',
  'êš' => 'êš€',
  'êšƒ' => 'êš‚',
  'êš…' => 'êš„',
  'êš‡' => 'êš†',
  'êš‰' => 'êšˆ',
  'êš‹' => 'êšŠ',
  'êš' => 'êšŒ',
  'êš' => 'êšŽ',
  'êš‘' => 'êš',
  'êš“' => 'êš’',
  'êš•' => 'êš”',
  'êš—' => 'êš–',
  'êš™' => 'êš˜',
  'êš›' => 'êšš',
  'êœ£' => 'êœ¢',
  'êœ¥' => 'êœ¤',
  'êœ§' => 'êœ¦',
  'êœ©' => 'êœ¨',
  'êœ«' => 'êœª',
  'êœ­' => 'êœ¬',
  'êœ¯' => 'êœ®',
  'êœ³' => 'êœ²',
  'êœµ' => 'êœ´',
  'êœ·' => 'êœ¶',
  'êœ¹' => 'êœ¸',
  'êœ»' => 'êœº',
  'êœ½' => 'êœ¼',
  'êœ¿' => 'êœ¾',
  'ê' => 'ê€',
  'êƒ' => 'ê‚',
  'ê…' => 'ê„',
  'ê‡' => 'ê†',
  'ê‰' => 'êˆ',
  'ê‹' => 'êŠ',
  'ê' => 'êŒ',
  'ê' => 'êŽ',
  'ê‘' => 'ê',
  'ê“' => 'ê’',
  'ê•' => 'ê”',
  'ê—' => 'ê–',
  'ê™' => 'ê˜',
  'ê›' => 'êš',
  'ê' => 'êœ',
  'êŸ' => 'êž',
  'ê¡' => 'ê ',
  'ê£' => 'ê¢',
  'ê¥' => 'ê¤',
  'ê§' => 'ê¦',
  'ê©' => 'ê¨',
  'ê«' => 'êª',
  'ê­' => 'ê¬',
  'ê¯' => 'ê®',
  'êº' => 'ê¹',
  'ê¼' => 'ê»',
  'ê¿' => 'ê¾',
  'êž' => 'êž€',
  'êžƒ' => 'êž‚',
  'êž…' => 'êž„',
  'êž‡' => 'êž†',
  'êžŒ' => 'êž‹',
  'êž‘' => 'êž',
  'êž“' => 'êž’',
  'êž—' => 'êž–',
  'êž™' => 'êž˜',
  'êž›' => 'êžš',
  'êž' => 'êžœ',
  'êžŸ' => 'êžž',
  'êž¡' => 'êž ',
  'êž£' => 'êž¢',
  'êž¥' => 'êž¤',
  'êž§' => 'êž¦',
  'êž©' => 'êž¨',
  'ï½' => 'ï¼¡',
  'ï½‚' => 'ï¼¢',
  'ï½ƒ' => 'ï¼£',
  'ï½„' => 'ï¼¤',
  'ï½…' => 'ï¼¥',
  'ï½†' => 'ï¼¦',
  'ï½‡' => 'ï¼§',
  'ï½ˆ' => 'ï¼¨',
  'ï½‰' => 'ï¼©',
  'ï½Š' => 'ï¼ª',
  'ï½‹' => 'ï¼«',
  'ï½Œ' => 'ï¼¬',
  'ï½' => 'ï¼­',
  'ï½Ž' => 'ï¼®',
  'ï½' => 'ï¼¯',
  'ï½' => 'ï¼°',
  'ï½‘' => 'ï¼±',
  'ï½’' => 'ï¼²',
  'ï½“' => 'ï¼³',
  'ï½”' => 'ï¼´',
  'ï½•' => 'ï¼µ',
  'ï½–' => 'ï¼¶',
  'ï½—' => 'ï¼·',
  'ï½˜' => 'ï¼¸',
  'ï½™' => 'ï¼¹',
  'ï½š' => 'ï¼º',
  'ð¨' => 'ð€',
  'ð©' => 'ð',
  'ðª' => 'ð‚',
  'ð«' => 'ðƒ',
  'ð¬' => 'ð„',
  'ð­' => 'ð…',
  'ð®' => 'ð†',
  'ð¯' => 'ð‡',
  'ð°' => 'ðˆ',
  'ð±' => 'ð‰',
  'ð²' => 'ðŠ',
  'ð³' => 'ð‹',
  'ð´' => 'ðŒ',
  'ðµ' => 'ð',
  'ð¶' => 'ðŽ',
  'ð·' => 'ð',
  'ð¸' => 'ð',
  'ð¹' => 'ð‘',
  'ðº' => 'ð’',
  'ð»' => 'ð“',
  'ð¼' => 'ð”',
  'ð½' => 'ð•',
  'ð¾' => 'ð–',
  'ð¿' => 'ð—',
  'ð‘€' => 'ð˜',
  'ð‘' => 'ð™',
  'ð‘‚' => 'ðš',
  'ð‘ƒ' => 'ð›',
  'ð‘„' => 'ðœ',
  'ð‘…' => 'ð',
  'ð‘†' => 'ðž',
  'ð‘‡' => 'ðŸ',
  'ð‘ˆ' => 'ð ',
  'ð‘‰' => 'ð¡',
  'ð‘Š' => 'ð¢',
  'ð‘‹' => 'ð£',
  'ð‘Œ' => 'ð¤',
  'ð‘' => 'ð¥',
  'ð‘Ž' => 'ð¦',
  'ð‘' => 'ð§',
  'ð‘£€' => 'ð‘¢ ',
  'ð‘£' => 'ð‘¢¡',
  'ð‘£‚' => 'ð‘¢¢',
  'ð‘£ƒ' => 'ð‘¢£',
  'ð‘£„' => 'ð‘¢¤',
  'ð‘£…' => 'ð‘¢¥',
  'ð‘£†' => 'ð‘¢¦',
  'ð‘£‡' => 'ð‘¢§',
  'ð‘£ˆ' => 'ð‘¢¨',
  'ð‘£‰' => 'ð‘¢©',
  'ð‘£Š' => 'ð‘¢ª',
  'ð‘£‹' => 'ð‘¢«',
  'ð‘£Œ' => 'ð‘¢¬',
  'ð‘£' => 'ð‘¢­',
  'ð‘£Ž' => 'ð‘¢®',
  'ð‘£' => 'ð‘¢¯',
  'ð‘£' => 'ð‘¢°',
  'ð‘£‘' => 'ð‘¢±',
  'ð‘£’' => 'ð‘¢²',
  'ð‘£“' => 'ð‘¢³',
  'ð‘£”' => 'ð‘¢´',
  'ð‘£•' => 'ð‘¢µ',
  'ð‘£–' => 'ð‘¢¶',
  'ð‘£—' => 'ð‘¢·',
  'ð‘£˜' => 'ð‘¢¸',
  'ð‘£™' => 'ð‘¢¹',
  'ð‘£š' => 'ð‘¢º',
  'ð‘£›' => 'ð‘¢»',
  'ð‘£œ' => 'ð‘¢¼',
  'ð‘£' => 'ð‘¢½',
  'ð‘£ž' => 'ð‘¢¾',
  'ð‘£Ÿ' => 'ð‘¢¿',
);
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Polyfill\Mbstring;

/**
 * Partial mbstring implementation in PHP, iconv based, UTF-8 centric.
 *
 * Implemented:
 * - mb_chr                  - Returns a specific character from its Unicode code point
 * - mb_convert_encoding     - Convert character encoding
 * - mb_convert_variables    - Convert character code in variable(s)
 * - mb_decode_mimeheader    - Decode string in MIME header field
 * - mb_encode_mimeheader    - Encode string for MIME header XXX NATIVE IMPLEMENTATION IS REALLY BUGGED
 * - mb_decode_numericentity - Decode HTML numeric string reference to character
 * - mb_encode_numericentity - Encode character to HTML numeric string reference
 * - mb_convert_case         - Perform case folding on a string
 * - mb_detect_encoding      - Detect character encoding
 * - mb_get_info             - Get internal settings of mbstring
 * - mb_http_input           - Detect HTTP input character encoding
 * - mb_http_output          - Set/Get HTTP output character encoding
 * - mb_internal_encoding    - Set/Get internal character encoding
 * - mb_list_encodings       - Returns an array of all supported encodings
 * - mb_ord                  - Returns the Unicode code point of a character
 * - mb_output_handler       - Callback function converts character encoding in output buffer
 * - mb_scrub                - Replaces ill-formed byte sequences with substitute characters
 * - mb_strlen               - Get string length
 * - mb_strpos               - Find position of first occurrence of string in a string
 * - mb_strrpos              - Find position of last occurrence of a string in a string
 * - mb_str_split            - Convert a string to an array
 * - mb_strtolower           - Make a string lowercase
 * - mb_strtoupper           - Make a string uppercase
 * - mb_substitute_character - Set/Get substitution character
 * - mb_substr               - Get part of string
 * - mb_stripos              - Finds position of first occurrence of a string within another, case insensitive
 * - mb_stristr              - Finds first occurrence of a string within another, case insensitive
 * - mb_strrchr              - Finds the last occurrence of a character in a string within another
 * - mb_strrichr             - Finds the last occurrence of a character in a string within another, case insensitive
 * - mb_strripos             - Finds position of last occurrence of a string within another, case insensitive
 * - mb_strstr               - Finds first occurrence of a string within another
 * - mb_strwidth             - Return width of string
 * - mb_substr_count         - Count the number of substring occurrences
 *
 * Not implemented:
 * - mb_convert_kana         - Convert "kana" one from another ("zen-kaku", "han-kaku" and more)
 * - mb_ereg_*               - Regular expression with multibyte support
 * - mb_parse_str            - Parse GET/POST/COOKIE data and set global variable
 * - mb_preferred_mime_name  - Get MIME charset string
 * - mb_regex_encoding       - Returns current encoding for multibyte regex as string
 * - mb_regex_set_options    - Set/Get the default options for mbregex functions
 * - mb_send_mail            - Send encoded mail
 * - mb_split                - Split multibyte string using regular expression
 * - mb_strcut               - Get part of string
 * - mb_strimwidth           - Get truncated string with specified width
 *
 * @author Nicolas Grekas <p@tchwork.com>
 *
 * @internal
 */
final class Mbstring
{
    const MB_CASE_FOLD = PHP_INT_MAX;

    private static $encodingList = array('ASCII', 'UTF-8');
    private static $language = 'neutral';
    private static $internalEncoding = 'UTF-8';
    private static $caseFold = array(
        array('Âµ', 'Å¿', "\xCD\x85", 'Ï‚', "\xCF\x90", "\xCF\x91", "\xCF\x95", "\xCF\x96", "\xCF\xB0", "\xCF\xB1", "\xCF\xB5", "\xE1\xBA\x9B", "\xE1\xBE\xBE"),
        array('Î¼', 's', 'Î¹',        'Ïƒ', 'Î²',        'Î¸',        'Ï†',        'Ï€',        'Îº',        'Ï',        'Îµ',        "\xE1\xB9\xA1", 'Î¹'),
    );

    public static function mb_convert_encoding($s, $toEncoding, $fromEncoding = null)
    {
        if (\is_array($fromEncoding) || false !== strpos($fromEncoding, ',')) {
            $fromEncoding = self::mb_detect_encoding($s, $fromEncoding);
        } else {
            $fromEncoding = self::getEncoding($fromEncoding);
        }

        $toEncoding = self::getEncoding($toEncoding);

        if ('BASE64' === $fromEncoding) {
            $s = base64_decode($s);
            $fromEncoding = $toEncoding;
        }

        if ('BASE64' === $toEncoding) {
            return base64_encode($s);
        }

        if ('HTML-ENTITIES' === $toEncoding || 'HTML' === $toEncoding) {
            if ('HTML-ENTITIES' === $fromEncoding || 'HTML' === $fromEncoding) {
                $fromEncoding = 'Windows-1252';
            }
            if ('UTF-8' !== $fromEncoding) {
                $s = iconv($fromEncoding, 'UTF-8//IGNORE', $s);
            }

            return preg_replace_callback('/[\x80-\xFF]+/', array(__CLASS__, 'html_encoding_callback'), $s);
        }

        if ('HTML-ENTITIES' === $fromEncoding) {
            $s = html_entity_decode($s, ENT_COMPAT, 'UTF-8');
            $fromEncoding = 'UTF-8';
        }

        return iconv($fromEncoding, $toEncoding.'//IGNORE', $s);
    }

    public static function mb_convert_variables($toEncoding, $fromEncoding, &$a = null, &$b = null, &$c = null, &$d = null, &$e = null, &$f = null)
    {
        $vars = array(&$a, &$b, &$c, &$d, &$e, &$f);

        $ok = true;
        array_walk_recursive($vars, function (&$v) use (&$ok, $toEncoding, $fromEncoding) {
            if (false === $v = Mbstring::mb_convert_encoding($v, $toEncoding, $fromEncoding)) {
                $ok = false;
            }
        });

        return $ok ? $fromEncoding : false;
    }

    public static function mb_decode_mimeheader($s)
    {
        return iconv_mime_decode($s, 2, self::$internalEncoding);
    }

    public static function mb_encode_mimeheader($s, $charset = null, $transferEncoding = null, $linefeed = null, $indent = null)
    {
        trigger_error('mb_encode_mimeheader() is bugged. Please use iconv_mime_encode() instead', E_USER_WARNING);
    }

    public static function mb_decode_numericentity($s, $convmap, $encoding = null)
    {
        if (null !== $s && !\is_scalar($s) && !(\is_object($s) && \method_exists($s, '__toString'))) {
            trigger_error('mb_decode_numericentity() expects parameter 1 to be string, '.\gettype($s).' given', E_USER_WARNING);

            return null;
        }

        if (!\is_array($convmap) || !$convmap) {
            return false;
        }

        if (null !== $encoding && !\is_scalar($encoding)) {
            trigger_error('mb_decode_numericentity() expects parameter 3 to be string, '.\gettype($s).' given', E_USER_WARNING);

            return '';  // Instead of null (cf. mb_encode_numericentity).
        }

        $s = (string) $s;
        if ('' === $s) {
            return '';
        }

        $encoding = self::getEncoding($encoding);

        if ('UTF-8' === $encoding) {
            $encoding = null;
            if (!preg_match('//u', $s)) {
                $s = @iconv('UTF-8', 'UTF-8//IGNORE', $s);
            }
        } else {
            $s = iconv($encoding, 'UTF-8//IGNORE', $s);
        }

        $cnt = floor(\count($convmap) / 4) * 4;

        for ($i = 0; $i < $cnt; $i += 4) {
            // collector_decode_htmlnumericentity ignores $convmap[$i + 3]
            $convmap[$i] += $convmap[$i + 2];
            $convmap[$i + 1] += $convmap[$i + 2];
        }

        $s = preg_replace_callback('/&#(?:0*([0-9]+)|x0*([0-9a-fA-F]+))(?!&);?/', function (array $m) use ($cnt, $convmap) {
            $c = isset($m[2]) ? (int) hexdec($m[2]) : $m[1];
            for ($i = 0; $i < $cnt; $i += 4) {
                if ($c >= $convmap[$i] && $c <= $convmap[$i + 1]) {
                    return Mbstring::mb_chr($c - $convmap[$i + 2]);
                }
            }

            return $m[0];
        }, $s);

        if (null === $encoding) {
            return $s;
        }

        return iconv('UTF-8', $encoding.'//IGNORE', $s);
    }

    public static function mb_encode_numericentity($s, $convmap, $encoding = null, $is_hex = false)
    {
        if (null !== $s && !\is_scalar($s) && !(\is_object($s) && \method_exists($s, '__toString'))) {
            trigger_error('mb_encode_numericentity() expects parameter 1 to be string, '.\gettype($s).' given', E_USER_WARNING);

            return null;
        }

        if (!\is_array($convmap) || !$convmap) {
            return false;
        }

        if (null !== $encoding && !\is_scalar($encoding)) {
            trigger_error('mb_encode_numericentity() expects parameter 3 to be string, '.\gettype($s).' given', E_USER_WARNING);

            return null;  // Instead of '' (cf. mb_decode_numericentity).
        }

        if (null !== $is_hex && !\is_scalar($is_hex)) {
            trigger_error('mb_encode_numericentity() expects parameter 4 to be boolean, '.\gettype($s).' given', E_USER_WARNING);

            return null;
        }

        $s = (string) $s;
        if ('' === $s) {
            return '';
        }

        $encoding = self::getEncoding($encoding);

        if ('UTF-8' === $encoding) {
            $encoding = null;
            if (!preg_match('//u', $s)) {
                $s = @iconv('UTF-8', 'UTF-8//IGNORE', $s);
            }
        } else {
            $s = iconv($encoding, 'UTF-8//IGNORE', $s);
        }

        static $ulenMask = array("\xC0" => 2, "\xD0" => 2, "\xE0" => 3, "\xF0" => 4);

        $cnt = floor(\count($convmap) / 4) * 4;
        $i = 0;
        $len = \strlen($s);
        $result = '';

        while ($i < $len) {
            $ulen = $s[$i] < "\x80" ? 1 : $ulenMask[$s[$i] & "\xF0"];
            $uchr = substr($s, $i, $ulen);
            $i += $ulen;
            $c = self::mb_ord($uchr);

            for ($j = 0; $j < $cnt; $j += 4) {
                if ($c >= $convmap[$j] && $c <= $convmap[$j + 1]) {
                    $cOffset = ($c + $convmap[$j + 2]) & $convmap[$j + 3];
                    $result .= $is_hex ? sprintf('&#x%X;', $cOffset) : '&#'.$cOffset.';';
                    continue 2;
                }
            }
            $result .= $uchr;
        }

        if (null === $encoding) {
            return $result;
        }

        return iconv('UTF-8', $encoding.'//IGNORE', $result);
    }

    public static function mb_convert_case($s, $mode, $encoding = null)
    {
        $s = (string) $s;
        if ('' === $s) {
            return '';
        }

        $encoding = self::getEncoding($encoding);

        if ('UTF-8' === $encoding) {
            $encoding = null;
            if (!preg_match('//u', $s)) {
                $s = @iconv('UTF-8', 'UTF-8//IGNORE', $s);
            }
        } else {
            $s = iconv($encoding, 'UTF-8//IGNORE', $s);
        }

        if (MB_CASE_TITLE == $mode) {
            static $titleRegexp = null;
            if (null === $titleRegexp) {
                $titleRegexp = self::getData('titleCaseRegexp');
            }
            $s = preg_replace_callback($titleRegexp, array(__CLASS__, 'title_case'), $s);
        } else {
            if (MB_CASE_UPPER == $mode) {
                static $upper = null;
                if (null === $upper) {
                    $upper = self::getData('upperCase');
                }
                $map = $upper;
            } else {
                if (self::MB_CASE_FOLD === $mode) {
                    $s = str_replace(self::$caseFold[0], self::$caseFold[1], $s);
                }

                static $lower = null;
                if (null === $lower) {
                    $lower = self::getData('lowerCase');
                }
                $map = $lower;
            }

            static $ulenMask = array("\xC0" => 2, "\xD0" => 2, "\xE0" => 3, "\xF0" => 4);

            $i = 0;
            $len = \strlen($s);

            while ($i < $len) {
                $ulen = $s[$i] < "\x80" ? 1 : $ulenMask[$s[$i] & "\xF0"];
                $uchr = substr($s, $i, $ulen);
                $i += $ulen;

                if (isset($map[$uchr])) {
                    $uchr = $map[$uchr];
                    $nlen = \strlen($uchr);

                    if ($nlen == $ulen) {
                        $nlen = $i;
                        do {
                            $s[--$nlen] = $uchr[--$ulen];
                        } while ($ulen);
                    } else {
                        $s = substr_replace($s, $uchr, $i - $ulen, $ulen);
                        $len += $nlen - $ulen;
                        $i += $nlen - $ulen;
                    }
                }
            }
        }

        if (null === $encoding) {
            return $s;
        }

        return iconv('UTF-8', $encoding.'//IGNORE', $s);
    }

    public static function mb_internal_encoding($encoding = null)
    {
        if (null === $encoding) {
            return self::$internalEncoding;
        }

        $encoding = self::getEncoding($encoding);

        if ('UTF-8' === $encoding || false !== @iconv($encoding, $encoding, ' ')) {
            self::$internalEncoding = $encoding;

            return true;
        }

        return false;
    }

    public static function mb_language($lang = null)
    {
        if (null === $lang) {
            return self::$language;
        }

        switch ($lang = strtolower($lang)) {
            case 'uni':
            case 'neutral':
                self::$language = $lang;

                return true;
        }

        return false;
    }

    public static function mb_list_encodings()
    {
        return array('UTF-8');
    }

    public static function mb_encoding_aliases($encoding)
    {
        switch (strtoupper($encoding)) {
            case 'UTF8':
            case 'UTF-8':
                return array('utf8');
        }

        return false;
    }

    public static function mb_check_encoding($var = null, $encoding = null)
    {
        if (null === $encoding) {
            if (null === $var) {
                return false;
            }
            $encoding = self::$internalEncoding;
        }

        return self::mb_detect_encoding($var, array($encoding)) || false !== @iconv($encoding, $encoding, $var);
    }

    public static function mb_detect_encoding($str, $encodingList = null, $strict = false)
    {
        if (null === $encodingList) {
            $encodingList = self::$encodingList;
        } else {
            if (!\is_array($encodingList)) {
                $encodingList = array_map('trim', explode(',', $encodingList));
            }
            $encodingList = array_map('strtoupper', $encodingList);
        }

        foreach ($encodingList as $enc) {
            switch ($enc) {
                case 'ASCII':
                    if (!preg_match('/[\x80-\xFF]/', $str)) {
                        return $enc;
                    }
                    break;

                case 'UTF8':
                case 'UTF-8':
                    if (preg_match('//u', $str)) {
                        return 'UTF-8';
                    }
                    break;

                default:
                    if (0 === strncmp($enc, 'ISO-8859-', 9)) {
                        return $enc;
                    }
            }
        }

        return false;
    }

    public static function mb_detect_order($encodingList = null)
    {
        if (null === $encodingList) {
            return self::$encodingList;
        }

        if (!\is_array($encodingList)) {
            $encodingList = array_map('trim', explode(',', $encodingList));
        }
        $encodingList = array_map('strtoupper', $encodingList);

        foreach ($encodingList as $enc) {
            switch ($enc) {
                default:
                    if (strncmp($enc, 'ISO-8859-', 9)) {
                        return false;
                    }
                    // no break
                case 'ASCII':
                case 'UTF8':
                case 'UTF-8':
            }
        }

        self::$encodingList = $encodingList;

        return true;
    }

    public static function mb_strlen($s, $encoding = null)
    {
        $encoding = self::getEncoding($encoding);
        if ('CP850' === $encoding || 'ASCII' === $encoding) {
            return \strlen($s);
        }

        return @iconv_strlen($s, $encoding);
    }

    public static function mb_strpos($haystack, $needle, $offset = 0, $encoding = null)
    {
        $encoding = self::getEncoding($encoding);
        if ('CP850' === $encoding || 'ASCII' === $encoding) {
            return strpos($haystack, $needle, $offset);
        }

        $needle = (string) $needle;
        if ('' === $needle) {
            trigger_error(__METHOD__.': Empty delimiter', E_USER_WARNING);

            return false;
        }

        return iconv_strpos($haystack, $needle, $offset, $encoding);
    }

    public static function mb_strrpos($haystack, $needle, $offset = 0, $encoding = null)
    {
        $encoding = self::getEncoding($encoding);
        if ('CP850' === $encoding || 'ASCII' === $encoding) {
            return strrpos($haystack, $needle, $offset);
        }

        if ($offset != (int) $offset) {
            $offset = 0;
        } elseif ($offset = (int) $offset) {
            if ($offset < 0) {
                $haystack = self::mb_substr($haystack, 0, $offset, $encoding);
                $offset = 0;
            } else {
                $haystack = self::mb_substr($haystack, $offset, 2147483647, $encoding);
            }
        }

        $pos = iconv_strrpos($haystack, $needle, $encoding);

        return false !== $pos ? $offset + $pos : false;
    }

    public static function mb_str_split($string, $split_length = 1, $encoding = null)
    {
        if (null !== $string && !\is_scalar($string) && !(\is_object($string) && \method_exists($string, '__toString'))) {
            trigger_error('mb_str_split() expects parameter 1 to be string, '.\gettype($string).' given', E_USER_WARNING);

            return null;
        }

        if ($split_length < 1) {
            trigger_error('The length of each segment must be greater than zero', E_USER_WARNING);

            return false;
        }

        if (null === $encoding) {
            $encoding = mb_internal_encoding();
        }

        $result = array();
        $length = mb_strlen($string, $encoding);

        for ($i = 0; $i < $length; $i += $split_length) {
            $result[] = mb_substr($string, $i, $split_length, $encoding);
        }

        return $result;
    }

    public static function mb_strtolower($s, $encoding = null)
    {
        return self::mb_convert_case($s, MB_CASE_LOWER, $encoding);
    }

    public static function mb_strtoupper($s, $encoding = null)
    {
        return self::mb_convert_case($s, MB_CASE_UPPER, $encoding);
    }

    public static function mb_substitute_character($c = null)
    {
        if (0 === strcasecmp($c, 'none')) {
            return true;
        }

        return null !== $c ? false : 'none';
    }

    public static function mb_substr($s, $start, $length = null, $encoding = null)
    {
        $encoding = self::getEncoding($encoding);
        if ('CP850' === $encoding || 'ASCII' === $encoding) {
            return (string) substr($s, $start, null === $length ? 2147483647 : $length);
        }

        if ($start < 0) {
            $start = iconv_strlen($s, $encoding) + $start;
            if ($start < 0) {
                $start = 0;
            }
        }

        if (null === $length) {
            $length = 2147483647;
        } elseif ($length < 0) {
            $length = iconv_strlen($s, $encoding) + $length - $start;
            if ($length < 0) {
                return '';
            }
        }

        return (string) iconv_substr($s, $start, $length, $encoding);
    }

    public static function mb_stripos($haystack, $needle, $offset = 0, $encoding = null)
    {
        $haystack = self::mb_convert_case($haystack, self::MB_CASE_FOLD, $encoding);
        $needle = self::mb_convert_case($needle, self::MB_CASE_FOLD, $encoding);

        return self::mb_strpos($haystack, $needle, $offset, $encoding);
    }

    public static function mb_stristr($haystack, $needle, $part = false, $encoding = null)
    {
        $pos = self::mb_stripos($haystack, $needle, 0, $encoding);

        return self::getSubpart($pos, $part, $haystack, $encoding);
    }

    public static function mb_strrchr($haystack, $needle, $part = false, $encoding = null)
    {
        $encoding = self::getEncoding($encoding);
        if ('CP850' === $encoding || 'ASCII' === $encoding) {
            return strrchr($haystack, $needle, $part);
        }
        $needle = self::mb_substr($needle, 0, 1, $encoding);
        $pos = iconv_strrpos($haystack, $needle, $encoding);

        return self::getSubpart($pos, $part, $haystack, $encoding);
    }

    public static function mb_strrichr($haystack, $needle, $part = false, $encoding = null)
    {
        $needle = self::mb_substr($needle, 0, 1, $encoding);
        $pos = self::mb_strripos($haystack, $needle, $encoding);

        return self::getSubpart($pos, $part, $haystack, $encoding);
    }

    public static function mb_strripos($haystack, $needle, $offset = 0, $encoding = null)
    {
        $haystack = self::mb_convert_case($haystack, self::MB_CASE_FOLD, $encoding);
        $needle = self::mb_convert_case($needle, self::MB_CASE_FOLD, $encoding);

        return self::mb_strrpos($haystack, $needle, $offset, $encoding);
    }

    public static function mb_strstr($haystack, $needle, $part = false, $encoding = null)
    {
        $pos = strpos($haystack, $needle);
        if (false === $pos) {
            return false;
        }
        if ($part) {
            return substr($haystack, 0, $pos);
        }

        return substr($haystack, $pos);
    }

    public static function mb_get_info($type = 'all')
    {
        $info = array(
            'internal_encoding' => self::$internalEncoding,
            'http_output' => 'pass',
            'http_output_conv_mimetypes' => '^(text/|application/xhtml\+xml)',
            'func_overload' => 0,
            'func_overload_list' => 'no overload',
            'mail_charset' => 'UTF-8',
            'mail_header_encoding' => 'BASE64',
            'mail_body_encoding' => 'BASE64',
            'illegal_chars' => 0,
            'encoding_translation' => 'Off',
            'language' => self::$language,
            'detect_order' => self::$encodingList,
            'substitute_character' => 'none',
            'strict_detection' => 'Off',
        );

        if ('all' === $type) {
            return $info;
        }
        if (isset($info[$type])) {
            return $info[$type];
        }

        return false;
    }

    public static function mb_http_input($type = '')
    {
        return false;
    }

    public static function mb_http_output($encoding = null)
    {
        return null !== $encoding ? 'pass' === $encoding : 'pass';
    }

    public static function mb_strwidth($s, $encoding = null)
    {
        $encoding = self::getEncoding($encoding);

        if ('UTF-8' !== $encoding) {
            $s = iconv($encoding, 'UTF-8//IGNORE', $s);
        }

        $s = preg_replace('/[\x{1100}-\x{115F}\x{2329}\x{232A}\x{2E80}-\x{303E}\x{3040}-\x{A4CF}\x{AC00}-\x{D7A3}\x{F900}-\x{FAFF}\x{FE10}-\x{FE19}\x{FE30}-\x{FE6F}\x{FF00}-\x{FF60}\x{FFE0}-\x{FFE6}\x{20000}-\x{2FFFD}\x{30000}-\x{3FFFD}]/u', '', $s, -1, $wide);

        return ($wide << 1) + iconv_strlen($s, 'UTF-8');
    }

    public static function mb_substr_count($haystack, $needle, $encoding = null)
    {
        return substr_count($haystack, $needle);
    }

    public static function mb_output_handler($contents, $status)
    {
        return $contents;
    }

    public static function mb_chr($code, $encoding = null)
    {
        if (0x80 > $code %= 0x200000) {
            $s = \chr($code);
        } elseif (0x800 > $code) {
            $s = \chr(0xC0 | $code >> 6).\chr(0x80 | $code & 0x3F);
        } elseif (0x10000 > $code) {
            $s = \chr(0xE0 | $code >> 12).\chr(0x80 | $code >> 6 & 0x3F).\chr(0x80 | $code & 0x3F);
        } else {
            $s = \chr(0xF0 | $code >> 18).\chr(0x80 | $code >> 12 & 0x3F).\chr(0x80 | $code >> 6 & 0x3F).\chr(0x80 | $code & 0x3F);
        }

        if ('UTF-8' !== $encoding = self::getEncoding($encoding)) {
            $s = mb_convert_encoding($s, $encoding, 'UTF-8');
        }

        return $s;
    }

    public static function mb_ord($s, $encoding = null)
    {
        if ('UTF-8' !== $encoding = self::getEncoding($encoding)) {
            $s = mb_convert_encoding($s, 'UTF-8', $encoding);
        }

        if (1 === \strlen($s)) {
            return \ord($s);
        }

        $code = ($s = unpack('C*', substr($s, 0, 4))) ? $s[1] : 0;
        if (0xF0 <= $code) {
            return (($code - 0xF0) << 18) + (($s[2] - 0x80) << 12) + (($s[3] - 0x80) << 6) + $s[4] - 0x80;
        }
        if (0xE0 <= $code) {
            return (($code - 0xE0) << 12) + (($s[2] - 0x80) << 6) + $s[3] - 0x80;
        }
        if (0xC0 <= $code) {
            return (($code - 0xC0) << 6) + $s[2] - 0x80;
        }

        return $code;
    }

    private static function getSubpart($pos, $part, $haystack, $encoding)
    {
        if (false === $pos) {
            return false;
        }
        if ($part) {
            return self::mb_substr($haystack, 0, $pos, $encoding);
        }

        return self::mb_substr($haystack, $pos, null, $encoding);
    }

    private static function html_encoding_callback(array $m)
    {
        $i = 1;
        $entities = '';
        $m = unpack('C*', htmlentities($m[0], ENT_COMPAT, 'UTF-8'));

        while (isset($m[$i])) {
            if (0x80 > $m[$i]) {
                $entities .= \chr($m[$i++]);
                continue;
            }
            if (0xF0 <= $m[$i]) {
                $c = (($m[$i++] - 0xF0) << 18) + (($m[$i++] - 0x80) << 12) + (($m[$i++] - 0x80) << 6) + $m[$i++] - 0x80;
            } elseif (0xE0 <= $m[$i]) {
                $c = (($m[$i++] - 0xE0) << 12) + (($m[$i++] - 0x80) << 6) + $m[$i++] - 0x80;
            } else {
                $c = (($m[$i++] - 0xC0) << 6) + $m[$i++] - 0x80;
            }

            $entities .= '&#'.$c.';';
        }

        return $entities;
    }

    private static function title_case(array $s)
    {
        return self::mb_convert_case($s[1], MB_CASE_UPPER, 'UTF-8').self::mb_convert_case($s[2], MB_CASE_LOWER, 'UTF-8');
    }

    private static function getData($file)
    {
        if (file_exists($file = __DIR__.'/Resources/unidata/'.$file.'.php')) {
            return require $file;
        }

        return false;
    }

    private static function getEncoding($encoding)
    {
        if (null === $encoding) {
            return self::$internalEncoding;
        }

        $encoding = strtoupper($encoding);

        if ('8BIT' === $encoding || 'BINARY' === $encoding) {
            return 'CP850';
        }
        if ('UTF8' === $encoding) {
            return 'UTF-8';
        }

        return $encoding;
    }
}
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

use Symfony\Polyfill\Mbstring as p;

if (!function_exists('mb_strlen')) {
    define('MB_CASE_UPPER', 0);
    define('MB_CASE_LOWER', 1);
    define('MB_CASE_TITLE', 2);

    function mb_convert_encoding($s, $to, $from = null) { return p\Mbstring::mb_convert_encoding($s, $to, $from); }
    function mb_decode_mimeheader($s) { return p\Mbstring::mb_decode_mimeheader($s); }
    function mb_encode_mimeheader($s, $charset = null, $transferEnc = null, $lf = null, $indent = null) { return p\Mbstring::mb_encode_mimeheader($s, $charset, $transferEnc, $lf, $indent); }
    function mb_decode_numericentity($s, $convmap, $enc = null) { return p\Mbstring::mb_decode_numericentity($s, $convmap, $enc); }
    function mb_encode_numericentity($s, $convmap, $enc = null, $is_hex = false) { return p\Mbstring::mb_encode_numericentity($s, $convmap, $enc, $is_hex); }
    function mb_convert_case($s, $mode, $enc = null) { return p\Mbstring::mb_convert_case($s, $mode, $enc); }
    function mb_internal_encoding($enc = null) { return p\Mbstring::mb_internal_encoding($enc); }
    function mb_language($lang = null) { return p\Mbstring::mb_language($lang); }
    function mb_list_encodings() { return p\Mbstring::mb_list_encodings(); }
    function mb_encoding_aliases($encoding) { return p\Mbstring::mb_encoding_aliases($encoding); }
    function mb_check_encoding($var = null, $encoding = null) { return p\Mbstring::mb_check_encoding($var, $encoding); }
    function mb_detect_encoding($str, $encodingList = null, $strict = false) { return p\Mbstring::mb_detect_encoding($str, $encodingList, $strict); }
    function mb_detect_order($encodingList = null) { return p\Mbstring::mb_detect_order($encodingList); }
    function mb_parse_str($s, &$result = array()) { parse_str($s, $result); }
    function mb_strlen($s, $enc = null) { return p\Mbstring::mb_strlen($s, $enc); }
    function mb_strpos($s, $needle, $offset = 0, $enc = null) { return p\Mbstring::mb_strpos($s, $needle, $offset, $enc); }
    function mb_strtolower($s, $enc = null) { return p\Mbstring::mb_strtolower($s, $enc); }
    function mb_strtoupper($s, $enc = null) { return p\Mbstring::mb_strtoupper($s, $enc); }
    function mb_substitute_character($char = null) { return p\Mbstring::mb_substitute_character($char); }
    function mb_substr($s, $start, $length = 2147483647, $enc = null) { return p\Mbstring::mb_substr($s, $start, $length, $enc); }
    function mb_stripos($s, $needle, $offset = 0, $enc = null) { return p\Mbstring::mb_stripos($s, $needle, $offset, $enc); }
    function mb_stristr($s, $needle, $part = false, $enc = null) { return p\Mbstring::mb_stristr($s, $needle, $part, $enc); }
    function mb_strrchr($s, $needle, $part = false, $enc = null) { return p\Mbstring::mb_strrchr($s, $needle, $part, $enc); }
    function mb_strrichr($s, $needle, $part = false, $enc = null) { return p\Mbstring::mb_strrichr($s, $needle, $part, $enc); }
    function mb_strripos($s, $needle, $offset = 0, $enc = null) { return p\Mbstring::mb_strripos($s, $needle, $offset, $enc); }
    function mb_strrpos($s, $needle, $offset = 0, $enc = null) { return p\Mbstring::mb_strrpos($s, $needle, $offset, $enc); }
    function mb_strstr($s, $needle, $part = false, $enc = null) { return p\Mbstring::mb_strstr($s, $needle, $part, $enc); }
    function mb_get_info($type = 'all') { return p\Mbstring::mb_get_info($type); }
    function mb_http_output($enc = null) { return p\Mbstring::mb_http_output($enc); }
    function mb_strwidth($s, $enc = null) { return p\Mbstring::mb_strwidth($s, $enc); }
    function mb_substr_count($haystack, $needle, $enc = null) { return p\Mbstring::mb_substr_count($haystack, $needle, $enc); }
    function mb_output_handler($contents, $status) { return p\Mbstring::mb_output_handler($contents, $status); }
    function mb_http_input($type = '') { return p\Mbstring::mb_http_input($type); }
    function mb_convert_variables($toEncoding, $fromEncoding, &$a = null, &$b = null, &$c = null, &$d = null, &$e = null, &$f = null) { return p\Mbstring::mb_convert_variables($toEncoding, $fromEncoding, $a, $b, $c, $d, $e, $f); }
}
if (!function_exists('mb_chr')) {
    function mb_ord($s, $enc = null) { return p\Mbstring::mb_ord($s, $enc); }
    function mb_chr($code, $enc = null) { return p\Mbstring::mb_chr($code, $enc); }
    function mb_scrub($s, $enc = null) { $enc = null === $enc ? mb_internal_encoding() : $enc; return mb_convert_encoding($s, $enc, $enc); }
}

if (!function_exists('mb_str_split')) {
    function mb_str_split($string, $split_length = 1, $encoding = null) { return p\Mbstring::mb_str_split($string, $split_length, $encoding); }
}
<?php

use Twig\NodeVisitor\AbstractNodeVisitor;

class_exists('Twig\NodeVisitor\AbstractNodeVisitor');

if (\false) {
    class Twig_BaseNodeVisitor extends AbstractNodeVisitor
    {
    }
}
<?php

use Twig\Node\NodeOutputInterface;

class_exists('Twig\Node\NodeOutputInterface');

if (\false) {
    class Twig_NodeOutputInterface extends NodeOutputInterface
    {
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

use Twig\Node\Node;

/**
 * Represents a template filter.
 *
 * Use \Twig\TwigFilter instead.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since 1.12 (to be removed in 2.0)
 */
interface Twig_FilterInterface
{
    /**
     * Compiles a filter.
     *
     * @return string The PHP code for the filter
     */
    public function compile();

    public function needsEnvironment();

    public function needsContext();

    public function getSafe(Node $filterArgs);

    public function getPreservesSafety();

    public function getPreEscape();

    public function setArguments($arguments);

    public function getArguments();
}
<?php

use Twig\Node\NodeCaptureInterface;

class_exists('Twig\Node\NodeCaptureInterface');

if (\false) {
    class Twig_NodeCaptureInterface extends NodeCaptureInterface
    {
    }
}
<?php

use Twig\Extension\InitRuntimeInterface;

class_exists('Twig\Extension\InitRuntimeInterface');

if (\false) {
    class Twig_Extension_InitRuntimeInterface extends InitRuntimeInterface
    {
    }
}
<?php

use Twig\Extension\EscaperExtension;

class_exists('Twig\Extension\EscaperExtension');

if (\false) {
    class Twig_Extension_Escaper extends EscaperExtension
    {
    }
}
<?php

use Twig\Extension\DebugExtension;

class_exists('Twig\Extension\DebugExtension');

if (\false) {
    class Twig_Extension_Debug extends DebugExtension
    {
    }
}
<?php

use Twig\Extension\StringLoaderExtension;

class_exists('Twig\Extension\StringLoaderExtension');

if (\false) {
    class Twig_Extension_StringLoader extends StringLoaderExtension
    {
    }
}
<?php

use Twig\Extension\SandboxExtension;

class_exists('Twig\Extension\SandboxExtension');

if (\false) {
    class Twig_Extension_Sandbox extends SandboxExtension
    {
    }
}
<?php

use Twig\Extension\OptimizerExtension;

class_exists('Twig\Extension\OptimizerExtension');

if (\false) {
    class Twig_Extension_Optimizer extends OptimizerExtension
    {
    }
}
<?php

use Twig\Extension\StagingExtension;

class_exists('Twig\Extension\StagingExtension');

if (\false) {
    class Twig_Extension_Staging extends StagingExtension
    {
    }
}
<?php

use Twig\Extension\GlobalsInterface;

class_exists('Twig\Extension\GlobalsInterface');

if (\false) {
    class Twig_Extension_GlobalsInterface extends GlobalsInterface
    {
    }
}
<?php

use Twig\Extension\ProfilerExtension;

class_exists('Twig\Extension\ProfilerExtension');

if (\false) {
    class Twig_Extension_Profiler extends ProfilerExtension
    {
    }
}
<?php

use Twig\Extension\CoreExtension;

class_exists('Twig\Extension\CoreExtension');

if (\false) {
    class Twig_Extension_Core extends CoreExtension
    {
    }
}
<?php

use Twig\Token;

class_exists('Twig\Token');

if (\false) {
    class Twig_Token extends Token
    {
    }
}
<?php

use Twig\Cache\FilesystemCache;

class_exists('Twig\Cache\FilesystemCache');

if (\false) {
    class Twig_Cache_Filesystem extends FilesystemCache
    {
    }
}
<?php

use Twig\Cache\NullCache;

class_exists('Twig\Cache\NullCache');

if (\false) {
    class Twig_Cache_Null extends NullCache
    {
    }
}
<?php

use Twig\NodeVisitor\SafeAnalysisNodeVisitor;

class_exists('Twig\NodeVisitor\SafeAnalysisNodeVisitor');

if (\false) {
    class Twig_NodeVisitor_SafeAnalysis extends SafeAnalysisNodeVisitor
    {
    }
}
<?php

use Twig\NodeVisitor\EscaperNodeVisitor;

class_exists('Twig\NodeVisitor\EscaperNodeVisitor');

if (\false) {
    class Twig_NodeVisitor_Escaper extends EscaperNodeVisitor
    {
    }
}
<?php

use Twig\NodeVisitor\SandboxNodeVisitor;

class_exists('Twig\NodeVisitor\SandboxNodeVisitor');

if (\false) {
    class Twig_NodeVisitor_Sandbox extends SandboxNodeVisitor
    {
    }
}
<?php

use Twig\NodeVisitor\OptimizerNodeVisitor;

class_exists('Twig\NodeVisitor\OptimizerNodeVisitor');

if (\false) {
    class Twig_NodeVisitor_Optimizer extends OptimizerNodeVisitor
    {
    }
}
<?php

use Twig\Parser;

class_exists('Twig\Parser');

if (\false) {
    class Twig_Parser extends Parser
    {
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

@trigger_error('The Twig_Test_Function class is deprecated since version 1.12 and will be removed in 2.0. Use \Twig\TwigTest instead.', E_USER_DEPRECATED);

/**
 * Represents a function template test.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since 1.12 (to be removed in 2.0)
 */
class Twig_Test_Function extends Twig_Test
{
    protected $function;

    public function __construct($function, array $options = [])
    {
        $options['callable'] = $function;

        parent::__construct($options);

        $this->function = $function;
    }

    public function compile()
    {
        return $this->function;
    }
}
<?php

use Twig\Test\NodeTestCase;

class_exists('Twig\Test\NodeTestCase');

if (\false) {
    class Twig_Test_NodeTestCase extends NodeTestCase
    {
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

use Twig\Extension\ExtensionInterface;

@trigger_error('The Twig_Test_Method class is deprecated since version 1.12 and will be removed in 2.0. Use \Twig\TwigTest instead.', E_USER_DEPRECATED);

/**
 * Represents a method template test.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since 1.12 (to be removed in 2.0)
 */
class Twig_Test_Method extends Twig_Test
{
    protected $extension;
    protected $method;

    public function __construct(ExtensionInterface $extension, $method, array $options = [])
    {
        $options['callable'] = [$extension, $method];

        parent::__construct($options);

        $this->extension = $extension;
        $this->method = $method;
    }

    public function compile()
    {
        return sprintf('$this->env->getExtension(\'%s\')->%s', \get_class($this->extension), $this->method);
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

@trigger_error('The Twig_Test_Node class is deprecated since version 1.12 and will be removed in 2.0.', E_USER_DEPRECATED);

/**
 * Represents a template test as a Node.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since 1.12 (to be removed in 2.0)
 */
class Twig_Test_Node extends Twig_Test
{
    protected $class;

    public function __construct($class, array $options = [])
    {
        parent::__construct($options);

        $this->class = $class;
    }

    public function getClass()
    {
        return $this->class;
    }

    public function compile()
    {
    }
}
<?php

use Twig\Test\IntegrationTestCase;

class_exists('Twig\Test\IntegrationTestCase');

if (\false) {
    class Twig_Test_IntegrationTestCase extends IntegrationTestCase
    {
    }
}
<?php

use Twig\Util\DeprecationCollector;

class_exists('Twig\Util\DeprecationCollector');

if (\false) {
    class Twig_Util_DeprecationCollector extends DeprecationCollector
    {
    }
}
<?php

use Twig\Util\TemplateDirIterator;

class_exists('Twig\Util\TemplateDirIterator');

if (\false) {
    class Twig_Util_TemplateDirIterator extends TemplateDirIterator
    {
    }
}
<?php

use Twig\ExpressionParser;

class_exists('Twig\ExpressionParser');

if (\false) {
    class Twig_ExpressionParser extends ExpressionParser
    {
    }
}
<?php

use Twig\Markup;

class_exists('Twig\Markup');

if (\false) {
    class Twig_Markup extends Markup
    {
    }
}
<?php

use Twig\TemplateWrapper;

class_exists('Twig\TemplateWrapper');

if (\false) {
    class Twig_TemplateWrapper extends TemplateWrapper
    {
    }
}
<?php

use Twig\Extension\ExtensionInterface;

class_exists('Twig\Extension\ExtensionInterface');

if (\false) {
    class Twig_ExtensionInterface extends ExtensionInterface
    {
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

use Twig\Node\Node;

@trigger_error('The Twig_Function class is deprecated since version 1.12 and will be removed in 2.0. Use \Twig\TwigFunction instead.', E_USER_DEPRECATED);

/**
 * Represents a template function.
 *
 * Use \Twig\TwigFunction instead.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since 1.12 (to be removed in 2.0)
 */
abstract class Twig_Function implements Twig_FunctionInterface, Twig_FunctionCallableInterface
{
    protected $options;
    protected $arguments = [];

    public function __construct(array $options = [])
    {
        $this->options = array_merge([
            'needs_environment' => false,
            'needs_context' => false,
            'callable' => null,
        ], $options);
    }

    public function setArguments($arguments)
    {
        $this->arguments = $arguments;
    }

    public function getArguments()
    {
        return $this->arguments;
    }

    public function needsEnvironment()
    {
        return $this->options['needs_environment'];
    }

    public function needsContext()
    {
        return $this->options['needs_context'];
    }

    public function getSafe(Node $functionArgs)
    {
        if (isset($this->options['is_safe'])) {
            return $this->options['is_safe'];
        }

        if (isset($this->options['is_safe_callback'])) {
            return \call_user_func($this->options['is_safe_callback'], $functionArgs);
        }

        return [];
    }

    public function getCallable()
    {
        return $this->options['callable'];
    }
}
<?php

use Twig\Cache\CacheInterface;

class_exists('Twig\Cache\CacheInterface');

if (\false) {
    class Twig_CacheInterface extends CacheInterface
    {
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

use Twig\Environment;

/**
 * Interface implemented by all compiled templates.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since 1.12 (to be removed in 3.0)
 */
interface Twig_TemplateInterface
{
    const ANY_CALL = 'any';
    const ARRAY_CALL = 'array';
    const METHOD_CALL = 'method';

    /**
     * Renders the template with the given context and returns it as string.
     *
     * @param array $context An array of parameters to pass to the template
     *
     * @return string The rendered template
     */
    public function render(array $context);

    /**
     * Displays the template with the given context.
     *
     * @param array $context An array of parameters to pass to the template
     * @param array $blocks  An array of blocks to pass to the template
     */
    public function display(array $context, array $blocks = []);

    /**
     * Returns the bound environment for this template.
     *
     * @return Environment
     */
    public function getEnvironment();
}
<?php

use Twig\RuntimeLoader\RuntimeLoaderInterface;

class_exists('Twig\RuntimeLoader\RuntimeLoaderInterface');

if (\false) {
    class Twig_RuntimeLoaderInterface extends RuntimeLoaderInterface
    {
    }
}
<?php

use Twig\TokenParser\TokenParserInterface;

class_exists('Twig\TokenParser\TokenParserInterface');

if (\false) {
    class Twig_TokenParserInterface extends TokenParserInterface
    {
    }
}
<?php

use Twig\Loader\LoaderInterface;

class_exists('Twig\Loader\LoaderInterface');

if (\false) {
    class Twig_LoaderInterface extends LoaderInterface
    {
    }
}
<?php

use Twig\TwigFunction;

class_exists('Twig\TwigFunction');

if (\false) {
    class Twig_SimpleFunction extends TwigFunction
    {
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Arnaud Le Blanc
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

@trigger_error('The Twig_Function_Function class is deprecated since version 1.12 and will be removed in 2.0. Use \Twig\TwigFunction instead.', E_USER_DEPRECATED);

/**
 * Represents a function template function.
 *
 * Use \Twig\TwigFunction instead.
 *
 * @author Arnaud Le Blanc <arnaud.lb@gmail.com>
 *
 * @deprecated since 1.12 (to be removed in 2.0)
 */
class Twig_Function_Function extends Twig_Function
{
    protected $function;

    public function __construct($function, array $options = [])
    {
        $options['callable'] = $function;

        parent::__construct($options);

        $this->function = $function;
    }

    public function compile()
    {
        return $this->function;
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Arnaud Le Blanc
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

use Twig\Extension\ExtensionInterface;

@trigger_error('The Twig_Function_Method class is deprecated since version 1.12 and will be removed in 2.0. Use \Twig\TwigFunction instead.', E_USER_DEPRECATED);

/**
 * Represents a method template function.
 *
 * Use \Twig\TwigFunction instead.
 *
 * @author Arnaud Le Blanc <arnaud.lb@gmail.com>
 *
 * @deprecated since 1.12 (to be removed in 2.0)
 */
class Twig_Function_Method extends Twig_Function
{
    protected $extension;
    protected $method;

    public function __construct(ExtensionInterface $extension, $method, array $options = [])
    {
        $options['callable'] = [$extension, $method];

        parent::__construct($options);

        $this->extension = $extension;
        $this->method = $method;
    }

    public function compile()
    {
        return sprintf('$this->env->getExtension(\'%s\')->%s', \get_class($this->extension), $this->method);
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

@trigger_error('The Twig_Function_Node class is deprecated since version 1.12 and will be removed in 2.0. Use \Twig\TwigFunction instead.', E_USER_DEPRECATED);

/**
 * Represents a template function as a node.
 *
 * Use \Twig\TwigFunction instead.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since 1.12 (to be removed in 2.0)
 */
class Twig_Function_Node extends Twig_Function
{
    protected $class;

    public function __construct($class, array $options = [])
    {
        parent::__construct($options);

        $this->class = $class;
    }

    public function getClass()
    {
        return $this->class;
    }

    public function compile()
    {
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

/**
 * Represents a callable template test.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since 1.12 (to be removed in 2.0)
 */
interface Twig_TestCallableInterface
{
    public function getCallable();
}
<?php

use Twig\Loader\SourceContextLoaderInterface;

class_exists('Twig\Loader\SourceContextLoaderInterface');

if (\false) {
    class Twig_SourceContextLoaderInterface extends SourceContextLoaderInterface
    {
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Arnaud Le Blanc
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

use Twig\Node\Node;

/**
 * Represents a template function.
 *
 * Use \Twig\TwigFunction instead.
 *
 * @author Arnaud Le Blanc <arnaud.lb@gmail.com>
 *
 * @deprecated since 1.12 (to be removed in 2.0)
 */
interface Twig_FunctionInterface
{
    /**
     * Compiles a function.
     *
     * @return string The PHP code for the function
     */
    public function compile();

    public function needsEnvironment();

    public function needsContext();

    public function getSafe(Node $filterArgs);

    public function setArguments($arguments);

    public function getArguments();
}
<?php

use Twig\Node\Node;

class_exists('Twig\Node\Node');

if (\false) {
    class Twig_Node extends Node
    {
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

@trigger_error('The Twig_Test class is deprecated since version 1.12 and will be removed in 2.0. Use \Twig\TwigTest instead.', E_USER_DEPRECATED);

/**
 * Represents a template test.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since 1.12 (to be removed in 2.0)
 */
abstract class Twig_Test implements Twig_TestInterface, Twig_TestCallableInterface
{
    protected $options;
    protected $arguments = [];

    public function __construct(array $options = [])
    {
        $this->options = array_merge([
            'callable' => null,
        ], $options);
    }

    public function getCallable()
    {
        return $this->options['callable'];
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

/**
 * Represents a callable template function.
 *
 * Use \Twig\TwigFunction instead.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since 1.12 (to be removed in 2.0)
 */
interface Twig_FunctionCallableInterface
{
    public function getCallable();
}
<?php

use Twig\Error\Error;

class_exists('Twig\Error\Error');

if (\false) {
    class Twig_Error extends Error
    {
    }
}
<?php

use Twig\RuntimeLoader\FactoryRuntimeLoader;

class_exists('Twig\RuntimeLoader\FactoryRuntimeLoader');

if (\false) {
    class Twig_FactoryRuntimeLoader extends FactoryRuntimeLoader
    {
    }
}
<?php

use Twig\Sandbox\SecurityPolicy;

class_exists('Twig\Sandbox\SecurityPolicy');

if (\false) {
    class Twig_Sandbox_SecurityPolicy extends SecurityPolicy
    {
    }
}
<?php

use Twig\Sandbox\SecurityNotAllowedFunctionError;

class_exists('Twig\Sandbox\SecurityNotAllowedFunctionError');

if (\false) {
    class Twig_Sandbox_SecurityNotAllowedFunctionError extends SecurityNotAllowedFunctionError
    {
    }
}
<?php

use Twig\Sandbox\SecurityNotAllowedMethodError;

class_exists('Twig\Sandbox\SecurityNotAllowedMethodError');

if (\false) {
    class Twig_Sandbox_SecurityNotAllowedMethodError extends SecurityNotAllowedMethodError
    {
    }
}
<?php

use Twig\Sandbox\SecurityError;

class_exists('Twig\Sandbox\SecurityError');

if (\false) {
    class Twig_Sandbox_SecurityError extends SecurityError
    {
    }
}
<?php

use Twig\Sandbox\SecurityPolicyInterface;

class_exists('Twig\Sandbox\SecurityPolicyInterface');

if (\false) {
    class Twig_Sandbox_SecurityPolicyInterface extends SecurityPolicyInterface
    {
    }
}
<?php

use Twig\Sandbox\SecurityNotAllowedTagError;

class_exists('Twig\Sandbox\SecurityNotAllowedTagError');

if (\false) {
    class Twig_Sandbox_SecurityNotAllowedTagError extends SecurityNotAllowedTagError
    {
    }
}
<?php

use Twig\Sandbox\SecurityNotAllowedFilterError;

class_exists('Twig\Sandbox\SecurityNotAllowedFilterError');

if (\false) {
    class Twig_Sandbox_SecurityNotAllowedFilterError extends SecurityNotAllowedFilterError
    {
    }
}
<?php

use Twig\Sandbox\SecurityNotAllowedPropertyError;

class_exists('Twig\Sandbox\SecurityNotAllowedPropertyError');

if (\false) {
    class Twig_Sandbox_SecurityNotAllowedPropertyError extends SecurityNotAllowedPropertyError
    {
    }
}
<?php

use Twig\Loader\ChainLoader;

class_exists('Twig\Loader\ChainLoader');

if (\false) {
    class Twig_Loader_Chain extends ChainLoader
    {
    }
}
<?php

use Twig\Loader\FilesystemLoader;

class_exists('Twig\Loader\FilesystemLoader');

if (\false) {
    class Twig_Loader_Filesystem extends FilesystemLoader
    {
    }
}
<?php

use Twig\Loader\ArrayLoader;

class_exists('Twig\Loader\ArrayLoader');

if (\false) {
    class Twig_Loader_Array extends ArrayLoader
    {
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

use Twig\Loader\ExistsLoaderInterface;
use Twig\Loader\LoaderInterface;
use Twig\Loader\SourceContextLoaderInterface;
use Twig\Source;

@trigger_error('The Twig_Loader_String class is deprecated since version 1.18.1 and will be removed in 2.0. Use "Twig\Loader\ArrayLoader" instead or "Twig\Environment::createTemplate()".', E_USER_DEPRECATED);

/**
 * Loads a template from a string.
 *
 * This loader should NEVER be used. It only exists for Twig internal purposes.
 *
 * When using this loader with a cache mechanism, you should know that a new cache
 * key is generated each time a template content "changes" (the cache key being the
 * source code of the template). If you don't want to see your cache grows out of
 * control, you need to take care of clearing the old cache file by yourself.
 *
 * @deprecated since 1.18.1 (to be removed in 2.0)
 *
 * @internal
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class Twig_Loader_String implements LoaderInterface, ExistsLoaderInterface, SourceContextLoaderInterface
{
    public function getSource($name)
    {
        @trigger_error(sprintf('Calling "getSource" on "%s" is deprecated since 1.27. Use getSourceContext() instead.', \get_class($this)), E_USER_DEPRECATED);

        return $name;
    }

    public function getSourceContext($name)
    {
        return new Source($name, $name);
    }

    public function exists($name)
    {
        return true;
    }

    public function getCacheKey($name)
    {
        return $name;
    }

    public function isFresh($name, $time)
    {
        return true;
    }
}
<?php

use Twig\Loader\ExistsLoaderInterface;

class_exists('Twig\Loader\ExistsLoaderInterface');

if (\false) {
    class Twig_ExistsLoaderInterface extends ExistsLoaderInterface
    {
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

use Twig\Error\SyntaxError;
use Twig\Node\ModuleNode;
use Twig\TokenStream;

/**
 * Interface implemented by parser classes.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since 1.12 (to be removed in 3.0)
 */
interface Twig_ParserInterface
{
    /**
     * Converts a token stream to a node tree.
     *
     * @return ModuleNode
     *
     * @throws SyntaxError When the token stream is syntactically or semantically wrong
     */
    public function parse(TokenStream $stream);
}
<?php

use Twig\TwigTest;

class_exists('Twig\TwigTest');

if (\false) {
    class Twig_SimpleTest extends TwigTest
    {
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

use Twig\Node\Node;

@trigger_error('The Twig_Filter class is deprecated since version 1.12 and will be removed in 2.0. Use \Twig\TwigFilter instead.', E_USER_DEPRECATED);

/**
 * Represents a template filter.
 *
 * Use \Twig\TwigFilter instead.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since 1.12 (to be removed in 2.0)
 */
abstract class Twig_Filter implements Twig_FilterInterface, Twig_FilterCallableInterface
{
    protected $options;
    protected $arguments = [];

    public function __construct(array $options = [])
    {
        $this->options = array_merge([
            'needs_environment' => false,
            'needs_context' => false,
            'pre_escape' => null,
            'preserves_safety' => null,
            'callable' => null,
        ], $options);
    }

    public function setArguments($arguments)
    {
        $this->arguments = $arguments;
    }

    public function getArguments()
    {
        return $this->arguments;
    }

    public function needsEnvironment()
    {
        return $this->options['needs_environment'];
    }

    public function needsContext()
    {
        return $this->options['needs_context'];
    }

    public function getSafe(Node $filterArgs)
    {
        if (isset($this->options['is_safe'])) {
            return $this->options['is_safe'];
        }

        if (isset($this->options['is_safe_callback'])) {
            return \call_user_func($this->options['is_safe_callback'], $filterArgs);
        }
    }

    public function getPreservesSafety()
    {
        return $this->options['preserves_safety'];
    }

    public function getPreEscape()
    {
        return $this->options['pre_escape'];
    }

    public function getCallable()
    {
        return $this->options['callable'];
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

/**
 * Represents a template test.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since 1.12 (to be removed in 2.0)
 */
interface Twig_TestInterface
{
    /**
     * Compiles a test.
     *
     * @return string The PHP code for the test
     */
    public function compile();
}
<?php

use Twig\Lexer;

class_exists('Twig\Lexer');

if (\false) {
    class Twig_Lexer extends Lexer
    {
    }
}
<?php

use Twig\TokenParser\AbstractTokenParser;

class_exists('Twig\TokenParser\AbstractTokenParser');

if (\false) {
    class Twig_TokenParser extends AbstractTokenParser
    {
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

use Twig\Compiler;

/**
 * Represents a node in the AST.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since 1.12 (to be removed in 3.0)
 */
interface Twig_NodeInterface extends \Countable, \IteratorAggregate
{
    /**
     * Compiles the node to PHP.
     */
    public function compile(Compiler $compiler);

    /**
     * @deprecated since 1.27 (to be removed in 2.0)
     */
    public function getLine();

    public function getNodeTag();
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Arnaud Le Blanc
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

use Twig\TokenParser\TokenParserInterface;

/**
 * Default implementation of a token parser broker.
 *
 * @author Arnaud Le Blanc <arnaud.lb@gmail.com>
 *
 * @deprecated since 1.12 (to be removed in 2.0)
 */
class Twig_TokenParserBroker implements Twig_TokenParserBrokerInterface
{
    protected $parser;
    protected $parsers = [];
    protected $brokers = [];

    /**
     * @param array|\Traversable $parsers                 A \Traversable of Twig_TokenParserInterface instances
     * @param array|\Traversable $brokers                 A \Traversable of Twig_TokenParserBrokerInterface instances
     * @param bool               $triggerDeprecationError
     */
    public function __construct($parsers = [], $brokers = [], $triggerDeprecationError = true)
    {
        if ($triggerDeprecationError) {
            @trigger_error('The '.__CLASS__.' class is deprecated since version 1.12 and will be removed in 2.0.', E_USER_DEPRECATED);
        }

        foreach ($parsers as $parser) {
            if (!$parser instanceof TokenParserInterface) {
                throw new \LogicException('$parsers must a an array of Twig_TokenParserInterface.');
            }
            $this->parsers[$parser->getTag()] = $parser;
        }
        foreach ($brokers as $broker) {
            if (!$broker instanceof Twig_TokenParserBrokerInterface) {
                throw new \LogicException('$brokers must a an array of Twig_TokenParserBrokerInterface.');
            }
            $this->brokers[] = $broker;
        }
    }

    public function addTokenParser(TokenParserInterface $parser)
    {
        $this->parsers[$parser->getTag()] = $parser;
    }

    public function removeTokenParser(TokenParserInterface $parser)
    {
        $name = $parser->getTag();
        if (isset($this->parsers[$name]) && $parser === $this->parsers[$name]) {
            unset($this->parsers[$name]);
        }
    }

    public function addTokenParserBroker(self $broker)
    {
        $this->brokers[] = $broker;
    }

    public function removeTokenParserBroker(self $broker)
    {
        if (false !== $pos = array_search($broker, $this->brokers)) {
            unset($this->brokers[$pos]);
        }
    }

    /**
     * Gets a suitable TokenParser for a tag.
     *
     * First looks in parsers, then in brokers.
     *
     * @param string $tag A tag name
     *
     * @return TokenParserInterface|null A Twig_TokenParserInterface or null if no suitable TokenParser was found
     */
    public function getTokenParser($tag)
    {
        if (isset($this->parsers[$tag])) {
            return $this->parsers[$tag];
        }
        $broker = end($this->brokers);
        while (false !== $broker) {
            $parser = $broker->getTokenParser($tag);
            if (null !== $parser) {
                return $parser;
            }
            $broker = prev($this->brokers);
        }
    }

    public function getParsers()
    {
        return $this->parsers;
    }

    public function getParser()
    {
        return $this->parser;
    }

    public function setParser(Twig_ParserInterface $parser)
    {
        $this->parser = $parser;
        foreach ($this->parsers as $tokenParser) {
            $tokenParser->setParser($parser);
        }
        foreach ($this->brokers as $broker) {
            $broker->setParser($parser);
        }
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

/**
 * Interface implemented by compiler classes.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since 1.12 (to be removed in 3.0)
 */
interface Twig_CompilerInterface
{
    /**
     * Compiles a node.
     *
     * @return $this
     */
    public function compile(Twig_NodeInterface $node);

    /**
     * Gets the current PHP code after compilation.
     *
     * @return string The PHP code
     */
    public function getSource();
}
<?php

use Twig\Profiler\NodeVisitor\ProfilerNodeVisitor;

class_exists('Twig\Profiler\NodeVisitor\ProfilerNodeVisitor');

if (\false) {
    class Twig_Profiler_NodeVisitor_Profiler extends ProfilerNodeVisitor
    {
    }
}
<?php

use Twig\Profiler\Profile;

class_exists('Twig\Profiler\Profile');

if (\false) {
    class Twig_Profiler_Profile extends Profile
    {
    }
}
<?php

use Twig\Profiler\Node\LeaveProfileNode;

class_exists('Twig\Profiler\Node\LeaveProfileNode');

if (\false) {
    class Twig_Profiler_Node_LeaveProfile extends LeaveProfileNode
    {
    }
}
<?php

use Twig\Profiler\Node\EnterProfileNode;

class_exists('Twig\Profiler\Node\EnterProfileNode');

if (\false) {
    class Twig_Profiler_Node_EnterProfile extends EnterProfileNode
    {
    }
}
<?php

use Twig\Profiler\Dumper\BlackfireDumper;

class_exists('Twig\Profiler\Dumper\BlackfireDumper');

if (\false) {
    class Twig_Profiler_Dumper_Blackfire extends BlackfireDumper
    {
    }
}
<?php

use Twig\Profiler\Dumper\HtmlDumper;

class_exists('Twig\Profiler\Dumper\HtmlDumper');

if (\false) {
    class Twig_Profiler_Dumper_Html extends HtmlDumper
    {
    }
}
<?php

use Twig\Profiler\Dumper\BaseDumper;

class_exists('Twig\Profiler\Dumper\BaseDumper');

if (\false) {
    class Twig_Profiler_Dumper_Base extends BaseDumper
    {
    }
}
<?php

use Twig\Profiler\Dumper\TextDumper;

class_exists('Twig\Profiler\Dumper\TextDumper');

if (\false) {
    class Twig_Profiler_Dumper_Text extends TextDumper
    {
    }
}
<?php

use Twig\TokenParser\ForTokenParser;

class_exists('Twig\TokenParser\ForTokenParser');

if (\false) {
    class Twig_TokenParser_For extends ForTokenParser
    {
    }
}
<?php

use Twig\TokenParser\AutoEscapeTokenParser;

class_exists('Twig\TokenParser\AutoEscapeTokenParser');

if (\false) {
    class Twig_TokenParser_AutoEscape extends AutoEscapeTokenParser
    {
    }
}
<?php

use Twig\TokenParser\ImportTokenParser;

class_exists('Twig\TokenParser\ImportTokenParser');

if (\false) {
    class Twig_TokenParser_Import extends ImportTokenParser
    {
    }
}
<?php

use Twig\TokenParser\IncludeTokenParser;

class_exists('Twig\TokenParser\IncludeTokenParser');

if (\false) {
    class Twig_TokenParser_Include extends IncludeTokenParser
    {
    }
}
<?php

use Twig\TokenParser\DoTokenParser;

class_exists('Twig\TokenParser\DoTokenParser');

if (\false) {
    class Twig_TokenParser_Do extends DoTokenParser
    {
    }
}
<?php

use Twig\TokenParser\WithTokenParser;

class_exists('Twig\TokenParser\WithTokenParser');

if (\false) {
    class Twig_TokenParser_With extends WithTokenParser
    {
    }
}
<?php

use Twig\TokenParser\FromTokenParser;

class_exists('Twig\TokenParser\FromTokenParser');

if (\false) {
    class Twig_TokenParser_From extends FromTokenParser
    {
    }
}
<?php

use Twig\TokenParser\ExtendsTokenParser;

class_exists('Twig\TokenParser\ExtendsTokenParser');

if (\false) {
    class Twig_TokenParser_Extends extends ExtendsTokenParser
    {
    }
}
<?php

use Twig\TokenParser\UseTokenParser;

class_exists('Twig\TokenParser\UseTokenParser');

if (\false) {
    class Twig_TokenParser_Use extends UseTokenParser
    {
    }
}
<?php

use Twig\TokenParser\SetTokenParser;

class_exists('Twig\TokenParser\SetTokenParser');

if (\false) {
    class Twig_TokenParser_Set extends SetTokenParser
    {
    }
}
<?php

use Twig\TokenParser\IfTokenParser;

class_exists('Twig\TokenParser\IfTokenParser');

if (\false) {
    class Twig_TokenParser_If extends IfTokenParser
    {
    }
}
<?php

use Twig\TokenParser\BlockTokenParser;

class_exists('Twig\TokenParser\BlockTokenParser');

if (\false) {
    class Twig_TokenParser_Block extends BlockTokenParser
    {
    }
}
<?php

use Twig\TokenParser\EmbedTokenParser;

class_exists('Twig\TokenParser\EmbedTokenParser');

if (\false) {
    class Twig_TokenParser_Embed extends EmbedTokenParser
    {
    }
}
<?php

use Twig\TokenParser\SandboxTokenParser;

class_exists('Twig\TokenParser\SandboxTokenParser');

if (\false) {
    class Twig_TokenParser_Sandbox extends SandboxTokenParser
    {
    }
}
<?php

use Twig\TokenParser\SpacelessTokenParser;

class_exists('Twig\TokenParser\SpacelessTokenParser');

if (\false) {
    class Twig_TokenParser_Spaceless extends SpacelessTokenParser
    {
    }
}
<?php

use Twig\TokenParser\FlushTokenParser;

class_exists('Twig\TokenParser\FlushTokenParser');

if (\false) {
    class Twig_TokenParser_Flush extends FlushTokenParser
    {
    }
}
<?php

use Twig\TokenParser\FilterTokenParser;

class_exists('Twig\TokenParser\FilterTokenParser');

if (\false) {
    class Twig_TokenParser_Filter extends FilterTokenParser
    {
    }
}
<?php

use Twig\TokenParser\DeprecatedTokenParser;

class_exists('Twig\TokenParser\DeprecatedTokenParser');

if (\false) {
    class Twig_TokenParser_Deprecated extends DeprecatedTokenParser
    {
    }
}
<?php

use Twig\TokenParser\MacroTokenParser;

class_exists('Twig\TokenParser\MacroTokenParser');

if (\false) {
    class Twig_TokenParser_Macro extends MacroTokenParser
    {
    }
}
<?php

use Twig\FileExtensionEscapingStrategy;

class_exists('Twig\FileExtensionEscapingStrategy');

if (\false) {
    class Twig_FileExtensionEscapingStrategy extends FileExtensionEscapingStrategy
    {
    }
}
<?php

use Twig\Source;

class_exists('Twig\Source');

if (\false) {
    class Twig_Source extends Source
    {
    }
}
<?php

use Twig\RuntimeLoader\ContainerRuntimeLoader;

class_exists('Twig\RuntimeLoader\ContainerRuntimeLoader');

if (\false) {
    class Twig_ContainerRuntimeLoader extends ContainerRuntimeLoader
    {
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

@trigger_error('The Twig_Filter_Function class is deprecated since version 1.12 and will be removed in 2.0. Use \Twig\TwigFilter instead.', E_USER_DEPRECATED);

/**
 * Represents a function template filter.
 *
 * Use \Twig\TwigFilter instead.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since 1.12 (to be removed in 2.0)
 */
class Twig_Filter_Function extends Twig_Filter
{
    protected $function;

    public function __construct($function, array $options = [])
    {
        $options['callable'] = $function;

        parent::__construct($options);

        $this->function = $function;
    }

    public function compile()
    {
        return $this->function;
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

use Twig\Extension\ExtensionInterface;

@trigger_error('The Twig_Filter_Method class is deprecated since version 1.12 and will be removed in 2.0. Use \Twig\TwigFilter instead.', E_USER_DEPRECATED);

/**
 * Represents a method template filter.
 *
 * Use \Twig\TwigFilter instead.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since 1.12 (to be removed in 2.0)
 */
class Twig_Filter_Method extends Twig_Filter
{
    protected $extension;
    protected $method;

    public function __construct(ExtensionInterface $extension, $method, array $options = [])
    {
        $options['callable'] = [$extension, $method];

        parent::__construct($options);

        $this->extension = $extension;
        $this->method = $method;
    }

    public function compile()
    {
        return sprintf('$this->env->getExtension(\'%s\')->%s', \get_class($this->extension), $this->method);
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

@trigger_error('The Twig_Filter_Node class is deprecated since version 1.12 and will be removed in 2.0. Use \Twig\TwigFilter instead.', E_USER_DEPRECATED);

/**
 * Represents a template filter as a node.
 *
 * Use \Twig\TwigFilter instead.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since 1.12 (to be removed in 2.0)
 */
class Twig_Filter_Node extends Twig_Filter
{
    protected $class;

    public function __construct($class, array $options = [])
    {
        parent::__construct($options);

        $this->class = $class;
    }

    public function getClass()
    {
        return $this->class;
    }

    public function compile()
    {
    }
}
<?php

use Twig\Node\Expression\AbstractExpression;

class_exists('Twig\Node\Expression\AbstractExpression');

if (\false) {
    class Twig_Node_Expression extends AbstractExpression
    {
    }
}
<?php

use Twig\Node\ForNode;

class_exists('Twig\Node\ForNode');

if (\false) {
    class Twig_Node_For extends ForNode
    {
    }
}
<?php

use Twig\Node\AutoEscapeNode;

class_exists('Twig\Node\AutoEscapeNode');

if (\false) {
    class Twig_Node_AutoEscape extends AutoEscapeNode
    {
    }
}
<?php

use Twig\Node\CheckSecurityNode;

class_exists('Twig\Node\CheckSecurityNode');

if (\false) {
    class Twig_Node_CheckSecurity extends CheckSecurityNode
    {
    }
}
<?php

use Twig\Node\ImportNode;

class_exists('Twig\Node\ImportNode');

if (\false) {
    class Twig_Node_Import extends ImportNode
    {
    }
}
<?php

use Twig\Node\IncludeNode;

class_exists('Twig\Node\IncludeNode');

if (\false) {
    class Twig_Node_Include extends IncludeNode
    {
    }
}
<?php

use Twig\Node\ForLoopNode;

class_exists('Twig\Node\ForLoopNode');

if (\false) {
    class Twig_Node_ForLoop extends ForLoopNode
    {
    }
}
<?php

use Twig\Node\BodyNode;

class_exists('Twig\Node\BodyNode');

if (\false) {
    class Twig_Node_Body extends BodyNode
    {
    }
}
<?php

use Twig\Node\DoNode;

class_exists('Twig\Node\DoNode');

if (\false) {
    class Twig_Node_Do extends DoNode
    {
    }
}
<?php

use Twig\Node\WithNode;

class_exists('Twig\Node\WithNode');

if (\false) {
    class Twig_Node_With extends WithNode
    {
    }
}
<?php

use Twig\Node\PrintNode;

class_exists('Twig\Node\PrintNode');

if (\false) {
    class Twig_Node_Print extends PrintNode
    {
    }
}
<?php

use Twig\Node\SetNode;

class_exists('Twig\Node\SetNode');

if (\false) {
    class Twig_Node_Set extends SetNode
    {
    }
}
<?php

use Twig\Node\IfNode;

class_exists('Twig\Node\IfNode');

if (\false) {
    class Twig_Node_If extends IfNode
    {
    }
}
<?php

use Twig\Node\BlockNode;

class_exists('Twig\Node\BlockNode');

if (\false) {
    class Twig_Node_Block extends BlockNode
    {
    }
}
<?php

use Twig\Node\EmbedNode;

class_exists('Twig\Node\EmbedNode');

if (\false) {
    class Twig_Node_Embed extends EmbedNode
    {
    }
}
<?php

use Twig\Node\ModuleNode;

class_exists('Twig\Node\ModuleNode');

if (\false) {
    class Twig_Node_Module extends ModuleNode
    {
    }
}
<?php

use Twig\Node\SandboxNode;

class_exists('Twig\Node\SandboxNode');

if (\false) {
    class Twig_Node_Sandbox extends SandboxNode
    {
    }
}
<?php

use Twig\Node\SpacelessNode;

class_exists('Twig\Node\SpacelessNode');

if (\false) {
    class Twig_Node_Spaceless extends SpacelessNode
    {
    }
}
<?php

use Twig\Node\FlushNode;

class_exists('Twig\Node\FlushNode');

if (\false) {
    class Twig_Node_Flush extends FlushNode
    {
    }
}
<?php

use Twig\Node\BlockReferenceNode;

class_exists('Twig\Node\BlockReferenceNode');

if (\false) {
    class Twig_Node_BlockReference extends BlockReferenceNode
    {
    }
}
<?php

use Twig\Node\Expression\ConstantExpression;

class_exists('Twig\Node\Expression\ConstantExpression');

if (\false) {
    class Twig_Node_Expression_Constant extends ConstantExpression
    {
    }
}
<?php

use Twig\Node\Expression\Unary\NegUnary;

class_exists('Twig\Node\Expression\Unary\NegUnary');

if (\false) {
    class Twig_Node_Expression_Unary_Neg extends NegUnary
    {
    }
}
<?php

use Twig\Node\Expression\Unary\PosUnary;

class_exists('Twig\Node\Expression\Unary\PosUnary');

if (\false) {
    class Twig_Node_Expression_Unary_Pos extends PosUnary
    {
    }
}
<?php

use Twig\Node\Expression\Unary\NotUnary;

class_exists('Twig\Node\Expression\Unary\NotUnary');

if (\false) {
    class Twig_Node_Expression_Unary_Not extends NotUnary
    {
    }
}
<?php

use Twig\Node\Expression\Test\ConstantTest;

class_exists('Twig\Node\Expression\Test\ConstantTest');

if (\false) {
    class Twig_Node_Expression_Test_Constant extends ConstantTest
    {
    }
}
<?php

use Twig\Node\Expression\Test\DefinedTest;

class_exists('Twig\Node\Expression\Test\DefinedTest');

if (\false) {
    class Twig_Node_Expression_Test_Defined extends DefinedTest
    {
    }
}
<?php

use Twig\Node\Expression\Test\SameasTest;

class_exists('Twig\Node\Expression\Test\SameasTest');

if (\false) {
    class Twig_Node_Expression_Test_Sameas extends SameasTest
    {
    }
}
<?php

use Twig\Node\Expression\Test\NullTest;

class_exists('Twig\Node\Expression\Test\NullTest');

if (\false) {
    class Twig_Node_Expression_Test_Null extends NullTest
    {
    }
}
<?php

use Twig\Node\Expression\Test\DivisiblebyTest;

class_exists('Twig\Node\Expression\Test\DivisiblebyTest');

if (\false) {
    class Twig_Node_Expression_Test_Divisibleby extends DivisiblebyTest
    {
    }
}
<?php

use Twig\Node\Expression\Test\EvenTest;

class_exists('Twig\Node\Expression\Test\EvenTest');

if (\false) {
    class Twig_Node_Expression_Test_Even extends EvenTest
    {
    }
}
<?php

use Twig\Node\Expression\Test\OddTest;

class_exists('Twig\Node\Expression\Test\OddTest');

if (\false) {
    class Twig_Node_Expression_Test_Odd extends OddTest
    {
    }
}
<?php

use Twig\Node\Expression\ArrayExpression;

class_exists('Twig\Node\Expression\ArrayExpression');

if (\false) {
    class Twig_Node_Expression_Array extends ArrayExpression
    {
    }
}
<?php

use Twig\Node\Expression\NullCoalesceExpression;

class_exists('Twig\Node\Expression\NullCoalesceExpression');

if (\false) {
    class Twig_Node_Expression_NullCoalesce extends NullCoalesceExpression
    {
    }
}
<?php

use Twig\Node\Expression\FunctionExpression;

class_exists('Twig\Node\Expression\FunctionExpression');

if (\false) {
    class Twig_Node_Expression_Function extends FunctionExpression
    {
    }
}
<?php

use Twig\Node\Expression\MethodCallExpression;

class_exists('Twig\Node\Expression\MethodCallExpression');

if (\false) {
    class Twig_Node_Expression_MethodCall extends MethodCallExpression
    {
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

use Twig\Compiler;
use Twig\Node\Expression\AbstractExpression;

@trigger_error('The Twig_Node_Expression_ExtensionReference class is deprecated since version 1.23 and will be removed in 2.0.', E_USER_DEPRECATED);

/**
 * Represents an extension call node.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since 1.23 and will be removed in 2.0.
 */
class Twig_Node_Expression_ExtensionReference extends AbstractExpression
{
    public function __construct($name, $lineno, $tag = null)
    {
        parent::__construct([], ['name' => $name], $lineno, $tag);
    }

    public function compile(Compiler $compiler)
    {
        $compiler->raw(sprintf("\$this->env->getExtension('%s')", $this->getAttribute('name')));
    }
}
<?php

use Twig\Node\Expression\TestExpression;

class_exists('Twig\Node\Expression\TestExpression');

if (\false) {
    class Twig_Node_Expression_Test extends TestExpression
    {
    }
}
<?php

use Twig\Node\Expression\Unary\AbstractUnary;

class_exists('Twig\Node\Expression\Unary\AbstractUnary');

if (\false) {
    class Twig_Node_Expression_Unary extends AbstractUnary
    {
    }
}
<?php

use Twig\Node\Expression\AssignNameExpression;

class_exists('Twig\Node\Expression\AssignNameExpression');

if (\false) {
    class Twig_Node_Expression_AssignName extends AssignNameExpression
    {
    }
}
<?php

use Twig\Node\Expression\FilterExpression;

class_exists('Twig\Node\Expression\FilterExpression');

if (\false) {
    class Twig_Node_Expression_Filter extends FilterExpression
    {
    }
}
<?php

use Twig\Node\Expression\Binary\AbstractBinary;

class_exists('Twig\Node\Expression\Binary\AbstractBinary');

if (\false) {
    class Twig_Node_Expression_Binary extends AbstractBinary
    {
    }
}
<?php

use Twig\Node\Expression\CallExpression;

class_exists('Twig\Node\Expression\CallExpression');

if (\false) {
    class Twig_Node_Expression_Call extends CallExpression
    {
    }
}
<?php

use Twig\Node\Expression\BlockReferenceExpression;

class_exists('Twig\Node\Expression\BlockReferenceExpression');

if (\false) {
    class Twig_Node_Expression_BlockReference extends BlockReferenceExpression
    {
    }
}
<?php

use Twig\Node\Expression\Binary\AddBinary;

class_exists('Twig\Node\Expression\Binary\AddBinary');

if (\false) {
    class Twig_Node_Expression_Binary_Add extends AddBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\LessEqualBinary;

class_exists('Twig\Node\Expression\Binary\LessEqualBinary');

if (\false) {
    class Twig_Node_Expression_Binary_LessEqual extends LessEqualBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\GreaterBinary;

class_exists('Twig\Node\Expression\Binary\GreaterBinary');

if (\false) {
    class Twig_Node_Expression_Binary_Greater extends GreaterBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\SubBinary;

class_exists('Twig\Node\Expression\Binary\SubBinary');

if (\false) {
    class Twig_Node_Expression_Binary_Sub extends SubBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\InBinary;

class_exists('Twig\Node\Expression\Binary\InBinary');

if (\false) {
    class Twig_Node_Expression_Binary_In extends InBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\AndBinary;

class_exists('Twig\Node\Expression\Binary\AndBinary');

if (\false) {
    class Twig_Node_Expression_Binary_And extends AndBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\PowerBinary;

class_exists('Twig\Node\Expression\Binary\PowerBinary');

if (\false) {
    class Twig_Node_Expression_Binary_Power extends PowerBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\EqualBinary;

class_exists('Twig\Node\Expression\Binary\EqualBinary');

if (\false) {
    class Twig_Node_Expression_Binary_Equal extends EqualBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\DivBinary;

class_exists('Twig\Node\Expression\Binary\DivBinary');

if (\false) {
    class Twig_Node_Expression_Binary_Div extends DivBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\ModBinary;

class_exists('Twig\Node\Expression\Binary\ModBinary');

if (\false) {
    class Twig_Node_Expression_Binary_Mod extends ModBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\BitwiseOrBinary;

class_exists('Twig\Node\Expression\Binary\BitwiseOrBinary');

if (\false) {
    class Twig_Node_Expression_Binary_BitwiseOr extends BitwiseOrBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\MatchesBinary;

class_exists('Twig\Node\Expression\Binary\MatchesBinary');

if (\false) {
    class Twig_Node_Expression_Binary_Matches extends MatchesBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\MulBinary;

class_exists('Twig\Node\Expression\Binary\MulBinary');

if (\false) {
    class Twig_Node_Expression_Binary_Mul extends MulBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\ConcatBinary;

class_exists('Twig\Node\Expression\Binary\ConcatBinary');

if (\false) {
    class Twig_Node_Expression_Binary_Concat extends ConcatBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\FloorDivBinary;

class_exists('Twig\Node\Expression\Binary\FloorDivBinary');

if (\false) {
    class Twig_Node_Expression_Binary_FloorDiv extends FloorDivBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\LessBinary;

class_exists('Twig\Node\Expression\Binary\LessBinary');

if (\false) {
    class Twig_Node_Expression_Binary_Less extends LessBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\StartsWithBinary;

class_exists('Twig\Node\Expression\Binary\StartsWithBinary');

if (\false) {
    class Twig_Node_Expression_Binary_StartsWith extends StartsWithBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\NotInBinary;

class_exists('Twig\Node\Expression\Binary\NotInBinary');

if (\false) {
    class Twig_Node_Expression_Binary_NotIn extends NotInBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\OrBinary;

class_exists('Twig\Node\Expression\Binary\OrBinary');

if (\false) {
    class Twig_Node_Expression_Binary_Or extends OrBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\RangeBinary;

class_exists('Twig\Node\Expression\Binary\RangeBinary');

if (\false) {
    class Twig_Node_Expression_Binary_Range extends RangeBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\BitwiseXorBinary;

class_exists('Twig\Node\Expression\Binary\BitwiseXorBinary');

if (\false) {
    class Twig_Node_Expression_Binary_BitwiseXor extends BitwiseXorBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\EndsWithBinary;

class_exists('Twig\Node\Expression\Binary\EndsWithBinary');

if (\false) {
    class Twig_Node_Expression_Binary_EndsWith extends EndsWithBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\NotEqualBinary;

class_exists('Twig\Node\Expression\Binary\NotEqualBinary');

if (\false) {
    class Twig_Node_Expression_Binary_NotEqual extends NotEqualBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\GreaterEqualBinary;

class_exists('Twig\Node\Expression\Binary\GreaterEqualBinary');

if (\false) {
    class Twig_Node_Expression_Binary_GreaterEqual extends GreaterEqualBinary
    {
    }
}
<?php

use Twig\Node\Expression\Binary\BitwiseAndBinary;

class_exists('Twig\Node\Expression\Binary\BitwiseAndBinary');

if (\false) {
    class Twig_Node_Expression_Binary_BitwiseAnd extends BitwiseAndBinary
    {
    }
}
<?php

use Twig\Node\Expression\ParentExpression;

class_exists('Twig\Node\Expression\ParentExpression');

if (\false) {
    class Twig_Node_Expression_Parent extends ParentExpression
    {
    }
}
<?php

use Twig\Node\Expression\Filter\DefaultFilter;

class_exists('Twig\Node\Expression\Filter\DefaultFilter');

if (\false) {
    class Twig_Node_Expression_Filter_Default extends DefaultFilter
    {
    }
}
<?php

use Twig\Node\Expression\NameExpression;

class_exists('Twig\Node\Expression\NameExpression');

if (\false) {
    class Twig_Node_Expression_Name extends NameExpression
    {
    }
}
<?php

use Twig\Node\Expression\GetAttrExpression;

class_exists('Twig\Node\Expression\GetAttrExpression');

if (\false) {
    class Twig_Node_Expression_GetAttr extends GetAttrExpression
    {
    }
}
<?php

use Twig\Node\Expression\ConditionalExpression;

class_exists('Twig\Node\Expression\ConditionalExpression');

if (\false) {
    class Twig_Node_Expression_Conditional extends ConditionalExpression
    {
    }
}
<?php

use Twig\Node\Expression\TempNameExpression;

class_exists('Twig\Node\Expression\TempNameExpression');

if (\false) {
    class Twig_Node_Expression_TempName extends TempNameExpression
    {
    }
}
<?php

use Twig\Node\SetTempNode;

class_exists('Twig\Node\SetTempNode');

if (\false) {
    class Twig_Node_SetTemp extends SetTempNode
    {
    }
}
<?php

use Twig\Node\TextNode;

class_exists('Twig\Node\TextNode');

if (\false) {
    class Twig_Node_Text extends TextNode
    {
    }
}
<?php

use Twig\Node\SandboxedPrintNode;

class_exists('Twig\Node\SandboxedPrintNode');

if (\false) {
    class Twig_Node_SandboxedPrint extends SandboxedPrintNode
    {
    }
}
<?php

use Twig\Node\DeprecatedNode;

class_exists('Twig\Node\DeprecatedNode');

if (\false) {
    class Twig_Node_Deprecated extends DeprecatedNode
    {
    }
}
<?php

use Twig\Node\MacroNode;

class_exists('Twig\Node\MacroNode');

if (\false) {
    class Twig_Node_Macro extends MacroNode
    {
    }
}
<?php

use Twig\Template;

class_exists('Twig\Template');

if (\false) {
    class Twig_Template extends Template
    {
    }
}
<?php

use Twig\Extension\AbstractExtension;

class_exists('Twig\Extension\AbstractExtension');

if (\false) {
    class Twig_Extension extends AbstractExtension
    {
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Arnaud Le Blanc
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

use Twig\TokenParser\TokenParserInterface;

/**
 * Interface implemented by token parser brokers.
 *
 * Token parser brokers allows to implement custom logic in the process of resolving a token parser for a given tag name.
 *
 * @author Arnaud Le Blanc <arnaud.lb@gmail.com>
 *
 * @deprecated since 1.12 (to be removed in 2.0)
 */
interface Twig_TokenParserBrokerInterface
{
    /**
     * Gets a TokenParser suitable for a tag.
     *
     * @param string $tag A tag name
     *
     * @return TokenParserInterface|null A Twig_TokenParserInterface or null if no suitable TokenParser was found
     */
    public function getTokenParser($tag);

    /**
     * Calls Twig\TokenParser\TokenParserInterface::setParser on all parsers the implementation knows of.
     */
    public function setParser(Twig_ParserInterface $parser);

    /**
     * Gets the Twig_ParserInterface.
     *
     * @return Twig_ParserInterface|null A Twig_ParserInterface instance or null
     */
    public function getParser();
}
<?php

use Twig\NodeTraverser;

class_exists('Twig\NodeTraverser');

if (\false) {
    class Twig_NodeTraverser extends NodeTraverser
    {
    }
}
<?php

use Twig\NodeVisitor\NodeVisitorInterface;

class_exists('Twig\NodeVisitor\NodeVisitorInterface');

if (\false) {
    class Twig_NodeVisitorInterface extends NodeVisitorInterface
    {
    }
}
<?php

use Twig\Error\RuntimeError;

class_exists('Twig\Error\RuntimeError');

if (\false) {
    class Twig_Error_Runtime extends RuntimeError
    {
    }
}
<?php

use Twig\Error\LoaderError;

class_exists('Twig\Error\LoaderError');

if (\false) {
    class Twig_Error_Loader extends LoaderError
    {
    }
}
<?php

use Twig\Error\SyntaxError;

class_exists('Twig\Error\SyntaxError');

if (\false) {
    class Twig_Error_Syntax extends SyntaxError
    {
    }
}
<?php

use Twig\Compiler;

class_exists('Twig\Compiler');

if (\false) {
    class Twig_Compiler extends Compiler
    {
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

@trigger_error('The Twig_Autoloader class is deprecated since version 1.21 and will be removed in 2.0. Use Composer instead.', E_USER_DEPRECATED);

/**
 * Autoloads Twig classes.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since 1.21 and will be removed in 2.0. Use Composer instead. 2.0.
 */
class Twig_Autoloader
{
    /**
     * Registers Twig_Autoloader as an SPL autoloader.
     *
     * @param bool $prepend whether to prepend the autoloader or not
     */
    public static function register($prepend = false)
    {
        @trigger_error('Using Twig_Autoloader is deprecated since version 1.21. Use Composer instead.', E_USER_DEPRECATED);

        spl_autoload_register([__CLASS__, 'autoload'], true, $prepend);
    }

    /**
     * Handles autoloading of classes.
     *
     * @param string $class a class name
     */
    public static function autoload($class)
    {
        if (0 !== strpos($class, 'Twig')) {
            return;
        }

        if (is_file($file = __DIR__.'/../'.str_replace(['_', "\0"], ['/', ''], $class).'.php')) {
            require $file;
        } elseif (is_file($file = __DIR__.'/../../src/'.str_replace(['Twig\\', '\\', "\0"], ['', '/', ''], $class).'.php')) {
            require $file;
        }
    }
}
<?php

use Twig\TwigFilter;

class_exists('Twig\TwigFilter');

if (\false) {
    class Twig_SimpleFilter extends TwigFilter
    {
    }
}
<?php

use Twig\Environment;

class_exists('Twig\Environment');

if (\false) {
    class Twig_Environment extends Environment
    {
    }
}
<?php

use Twig\TokenStream;

class_exists('Twig\TokenStream');

if (\false) {
    class Twig_TokenStream extends TokenStream
    {
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

/**
 * Represents a callable template filter.
 *
 * Use \Twig\TwigFilter instead.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since 1.12 (to be removed in 2.0)
 */
interface Twig_FilterCallableInterface
{
    public function getCallable();
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

use Twig\Error\SyntaxError;
use Twig\Source;
use Twig\TokenStream;

/**
 * Interface implemented by lexer classes.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since 1.12 (to be removed in 3.0)
 */
interface Twig_LexerInterface
{
    /**
     * Tokenizes a source code.
     *
     * @param string|Source $code The source code
     * @param string        $name A unique identifier for the source code
     *
     * @return TokenStream
     *
     * @throws SyntaxError When the code is syntactically wrong
     */
    public function tokenize($code, $name = null);
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Extension {
use Twig\NodeVisitor\EscaperNodeVisitor;
use Twig\TokenParser\AutoEscapeTokenParser;
use Twig\TwigFilter;

/**
 * @final
 */
class EscaperExtension extends AbstractExtension
{
    protected $defaultStrategy;

    /**
     * @param string|false|callable $defaultStrategy An escaping strategy
     *
     * @see setDefaultStrategy()
     */
    public function __construct($defaultStrategy = 'html')
    {
        $this->setDefaultStrategy($defaultStrategy);
    }

    public function getTokenParsers()
    {
        return [new AutoEscapeTokenParser()];
    }

    public function getNodeVisitors()
    {
        return [new EscaperNodeVisitor()];
    }

    public function getFilters()
    {
        return [
            new TwigFilter('raw', 'twig_raw_filter', ['is_safe' => ['all']]),
        ];
    }

    /**
     * Sets the default strategy to use when not defined by the user.
     *
     * The strategy can be a valid PHP callback that takes the template
     * name as an argument and returns the strategy to use.
     *
     * @param string|false|callable $defaultStrategy An escaping strategy
     */
    public function setDefaultStrategy($defaultStrategy)
    {
        // for BC
        if (true === $defaultStrategy) {
            @trigger_error('Using "true" as the default strategy is deprecated since version 1.21. Use "html" instead.', E_USER_DEPRECATED);

            $defaultStrategy = 'html';
        }

        if ('filename' === $defaultStrategy) {
            @trigger_error('Using "filename" as the default strategy is deprecated since version 1.27. Use "name" instead.', E_USER_DEPRECATED);

            $defaultStrategy = 'name';
        }

        if ('name' === $defaultStrategy) {
            $defaultStrategy = ['\Twig\FileExtensionEscapingStrategy', 'guess'];
        }

        $this->defaultStrategy = $defaultStrategy;
    }

    /**
     * Gets the default strategy to use when not defined by the user.
     *
     * @param string $name The template name
     *
     * @return string|false The default strategy to use for the template
     */
    public function getDefaultStrategy($name)
    {
        // disable string callables to avoid calling a function named html or js,
        // or any other upcoming escaping strategy
        if (!\is_string($this->defaultStrategy) && false !== $this->defaultStrategy) {
            return \call_user_func($this->defaultStrategy, $name);
        }

        return $this->defaultStrategy;
    }

    public function getName()
    {
        return 'escaper';
    }
}

class_alias('Twig\Extension\EscaperExtension', 'Twig_Extension_Escaper');
}

namespace {
/**
 * Marks a variable as being safe.
 *
 * @param string $string A PHP variable
 *
 * @return string
 */
function twig_raw_filter($string)
{
    return $string;
}
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Extension;

use Twig\Profiler\NodeVisitor\ProfilerNodeVisitor;
use Twig\Profiler\Profile;

class ProfilerExtension extends AbstractExtension
{
    private $actives = [];

    public function __construct(Profile $profile)
    {
        $this->actives[] = $profile;
    }

    public function enter(Profile $profile)
    {
        $this->actives[0]->addProfile($profile);
        array_unshift($this->actives, $profile);
    }

    public function leave(Profile $profile)
    {
        $profile->leave();
        array_shift($this->actives);

        if (1 === \count($this->actives)) {
            $this->actives[0]->leave();
        }
    }

    public function getNodeVisitors()
    {
        return [new ProfilerNodeVisitor(\get_class($this))];
    }

    public function getName()
    {
        return 'profiler';
    }
}

class_alias('Twig\Extension\ProfilerExtension', 'Twig_Extension_Profiler');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Extension;

use Twig\NodeVisitor\NodeVisitorInterface;
use Twig\TokenParser\TokenParserInterface;

/**
 * Internal class.
 *
 * This class is used by \Twig\Environment as a staging area and must not be used directly.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @internal
 */
class StagingExtension extends AbstractExtension
{
    protected $functions = [];
    protected $filters = [];
    protected $visitors = [];
    protected $tokenParsers = [];
    protected $globals = [];
    protected $tests = [];

    public function addFunction($name, $function)
    {
        if (isset($this->functions[$name])) {
            @trigger_error(sprintf('Overriding function "%s" that is already registered is deprecated since version 1.30 and won\'t be possible anymore in 2.0.', $name), E_USER_DEPRECATED);
        }

        $this->functions[$name] = $function;
    }

    public function getFunctions()
    {
        return $this->functions;
    }

    public function addFilter($name, $filter)
    {
        if (isset($this->filters[$name])) {
            @trigger_error(sprintf('Overriding filter "%s" that is already registered is deprecated since version 1.30 and won\'t be possible anymore in 2.0.', $name), E_USER_DEPRECATED);
        }

        $this->filters[$name] = $filter;
    }

    public function getFilters()
    {
        return $this->filters;
    }

    public function addNodeVisitor(NodeVisitorInterface $visitor)
    {
        $this->visitors[] = $visitor;
    }

    public function getNodeVisitors()
    {
        return $this->visitors;
    }

    public function addTokenParser(TokenParserInterface $parser)
    {
        if (isset($this->tokenParsers[$parser->getTag()])) {
            @trigger_error(sprintf('Overriding tag "%s" that is already registered is deprecated since version 1.30 and won\'t be possible anymore in 2.0.', $parser->getTag()), E_USER_DEPRECATED);
        }

        $this->tokenParsers[$parser->getTag()] = $parser;
    }

    public function getTokenParsers()
    {
        return $this->tokenParsers;
    }

    public function addGlobal($name, $value)
    {
        $this->globals[$name] = $value;
    }

    public function getGlobals()
    {
        return $this->globals;
    }

    public function addTest($name, $test)
    {
        if (isset($this->tests[$name])) {
            @trigger_error(sprintf('Overriding test "%s" that is already registered is deprecated since version 1.30 and won\'t be possible anymore in 2.0.', $name), E_USER_DEPRECATED);
        }

        $this->tests[$name] = $test;
    }

    public function getTests()
    {
        return $this->tests;
    }

    public function getName()
    {
        return 'staging';
    }
}

class_alias('Twig\Extension\StagingExtension', 'Twig_Extension_Staging');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Extension {
use Twig\TwigFunction;

/**
 * @final
 */
class StringLoaderExtension extends AbstractExtension
{
    public function getFunctions()
    {
        return [
            new TwigFunction('template_from_string', 'twig_template_from_string', ['needs_environment' => true]),
        ];
    }

    public function getName()
    {
        return 'string_loader';
    }
}

class_alias('Twig\Extension\StringLoaderExtension', 'Twig_Extension_StringLoader');
}

namespace {
use Twig\Environment;
use Twig\TemplateWrapper;

/**
 * Loads a template from a string.
 *
 *     {{ include(template_from_string("Hello {{ name }}")) }}
 *
 * @param string $template A template as a string or object implementing __toString()
 * @param string $name     An optional name of the template to be used in error messages
 *
 * @return TemplateWrapper
 */
function twig_template_from_string(Environment $env, $template, $name = null)
{
    return $env->createTemplate((string) $template, $name);
}
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Extension;

/**
 * @author GrÃ©goire Pineau <lyrixx@lyrixx.info>
 */
interface RuntimeExtensionInterface
{
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Extension;

/**
 * Enables usage of the deprecated Twig\Extension\AbstractExtension::initRuntime() method.
 *
 * Explicitly implement this interface if you really need to implement the
 * deprecated initRuntime() method in your extensions.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
interface InitRuntimeInterface
{
}

class_alias('Twig\Extension\InitRuntimeInterface', 'Twig_Extension_InitRuntimeInterface');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Extension;

use Twig\Environment;
use Twig\NodeVisitor\NodeVisitorInterface;
use Twig\TokenParser\TokenParserInterface;
use Twig\TwigFilter;
use Twig\TwigFunction;
use Twig\TwigTest;

/**
 * Interface implemented by extension classes.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
interface ExtensionInterface
{
    /**
     * Initializes the runtime environment.
     *
     * This is where you can load some file that contains filter functions for instance.
     *
     * @deprecated since 1.23 (to be removed in 2.0), implement \Twig_Extension_InitRuntimeInterface instead
     */
    public function initRuntime(Environment $environment);

    /**
     * Returns the token parser instances to add to the existing list.
     *
     * @return TokenParserInterface[]
     */
    public function getTokenParsers();

    /**
     * Returns the node visitor instances to add to the existing list.
     *
     * @return NodeVisitorInterface[]
     */
    public function getNodeVisitors();

    /**
     * Returns a list of filters to add to the existing list.
     *
     * @return TwigFilter[]
     */
    public function getFilters();

    /**
     * Returns a list of tests to add to the existing list.
     *
     * @return TwigTest[]
     */
    public function getTests();

    /**
     * Returns a list of functions to add to the existing list.
     *
     * @return TwigFunction[]
     */
    public function getFunctions();

    /**
     * Returns a list of operators to add to the existing list.
     *
     * @return array<array> First array of unary operators, second array of binary operators
     */
    public function getOperators();

    /**
     * Returns a list of global variables to add to the existing list.
     *
     * @return array An array of global variables
     *
     * @deprecated since 1.23 (to be removed in 2.0), implement \Twig_Extension_GlobalsInterface instead
     */
    public function getGlobals();

    /**
     * Returns the name of the extension.
     *
     * @return string The extension name
     *
     * @deprecated since 1.26 (to be removed in 2.0), not used anymore internally
     */
    public function getName();
}

class_alias('Twig\Extension\ExtensionInterface', 'Twig_ExtensionInterface');

// Ensure that the aliased name is loaded to keep BC for classes implementing the typehint with the old aliased name.
class_exists('Twig\Environment');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Extension;

use Twig\Environment;

abstract class AbstractExtension implements ExtensionInterface
{
    /**
     * @deprecated since 1.23 (to be removed in 2.0), implement \Twig_Extension_InitRuntimeInterface instead
     */
    public function initRuntime(Environment $environment)
    {
    }

    public function getTokenParsers()
    {
        return [];
    }

    public function getNodeVisitors()
    {
        return [];
    }

    public function getFilters()
    {
        return [];
    }

    public function getTests()
    {
        return [];
    }

    public function getFunctions()
    {
        return [];
    }

    public function getOperators()
    {
        return [];
    }

    /**
     * @deprecated since 1.23 (to be removed in 2.0), implement \Twig_Extension_GlobalsInterface instead
     */
    public function getGlobals()
    {
        return [];
    }

    /**
     * @deprecated since 1.26 (to be removed in 2.0), not used anymore internally
     */
    public function getName()
    {
        return \get_class($this);
    }
}

class_alias('Twig\Extension\AbstractExtension', 'Twig_Extension');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Extension;

use Twig\NodeVisitor\SandboxNodeVisitor;
use Twig\Sandbox\SecurityPolicyInterface;
use Twig\TokenParser\SandboxTokenParser;

/**
 * @final
 */
class SandboxExtension extends AbstractExtension
{
    protected $sandboxedGlobally;
    protected $sandboxed;
    protected $policy;

    public function __construct(SecurityPolicyInterface $policy, $sandboxed = false)
    {
        $this->policy = $policy;
        $this->sandboxedGlobally = $sandboxed;
    }

    public function getTokenParsers()
    {
        return [new SandboxTokenParser()];
    }

    public function getNodeVisitors()
    {
        return [new SandboxNodeVisitor()];
    }

    public function enableSandbox()
    {
        $this->sandboxed = true;
    }

    public function disableSandbox()
    {
        $this->sandboxed = false;
    }

    public function isSandboxed()
    {
        return $this->sandboxedGlobally || $this->sandboxed;
    }

    public function isSandboxedGlobally()
    {
        return $this->sandboxedGlobally;
    }

    public function setSecurityPolicy(SecurityPolicyInterface $policy)
    {
        $this->policy = $policy;
    }

    public function getSecurityPolicy()
    {
        return $this->policy;
    }

    public function checkSecurity($tags, $filters, $functions)
    {
        if ($this->isSandboxed()) {
            $this->policy->checkSecurity($tags, $filters, $functions);
        }
    }

    public function checkMethodAllowed($obj, $method)
    {
        if ($this->isSandboxed()) {
            $this->policy->checkMethodAllowed($obj, $method);
        }
    }

    public function checkPropertyAllowed($obj, $method)
    {
        if ($this->isSandboxed()) {
            $this->policy->checkPropertyAllowed($obj, $method);
        }
    }

    public function ensureToStringAllowed($obj)
    {
        if ($this->isSandboxed() && \is_object($obj) && method_exists($obj, '__toString')) {
            $this->policy->checkMethodAllowed($obj, '__toString');
        }

        return $obj;
    }

    public function getName()
    {
        return 'sandbox';
    }
}

class_alias('Twig\Extension\SandboxExtension', 'Twig_Extension_Sandbox');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Extension {
use Twig\ExpressionParser;
use Twig\TokenParser\ApplyTokenParser;
use Twig\TokenParser\BlockTokenParser;
use Twig\TokenParser\DeprecatedTokenParser;
use Twig\TokenParser\DoTokenParser;
use Twig\TokenParser\EmbedTokenParser;
use Twig\TokenParser\ExtendsTokenParser;
use Twig\TokenParser\FilterTokenParser;
use Twig\TokenParser\FlushTokenParser;
use Twig\TokenParser\ForTokenParser;
use Twig\TokenParser\FromTokenParser;
use Twig\TokenParser\IfTokenParser;
use Twig\TokenParser\ImportTokenParser;
use Twig\TokenParser\IncludeTokenParser;
use Twig\TokenParser\MacroTokenParser;
use Twig\TokenParser\SetTokenParser;
use Twig\TokenParser\SpacelessTokenParser;
use Twig\TokenParser\UseTokenParser;
use Twig\TokenParser\WithTokenParser;
use Twig\TwigFilter;
use Twig\TwigFunction;
use Twig\TwigTest;

/**
 * @final
 */
class CoreExtension extends AbstractExtension
{
    protected $dateFormats = ['F j, Y H:i', '%d days'];
    protected $numberFormat = [0, '.', ','];
    protected $timezone = null;
    protected $escapers = [];

    /**
     * Defines a new escaper to be used via the escape filter.
     *
     * @param string   $strategy The strategy name that should be used as a strategy in the escape call
     * @param callable $callable A valid PHP callable
     */
    public function setEscaper($strategy, $callable)
    {
        $this->escapers[$strategy] = $callable;
    }

    /**
     * Gets all defined escapers.
     *
     * @return array An array of escapers
     */
    public function getEscapers()
    {
        return $this->escapers;
    }

    /**
     * Sets the default format to be used by the date filter.
     *
     * @param string $format             The default date format string
     * @param string $dateIntervalFormat The default date interval format string
     */
    public function setDateFormat($format = null, $dateIntervalFormat = null)
    {
        if (null !== $format) {
            $this->dateFormats[0] = $format;
        }

        if (null !== $dateIntervalFormat) {
            $this->dateFormats[1] = $dateIntervalFormat;
        }
    }

    /**
     * Gets the default format to be used by the date filter.
     *
     * @return array The default date format string and the default date interval format string
     */
    public function getDateFormat()
    {
        return $this->dateFormats;
    }

    /**
     * Sets the default timezone to be used by the date filter.
     *
     * @param \DateTimeZone|string $timezone The default timezone string or a \DateTimeZone object
     */
    public function setTimezone($timezone)
    {
        $this->timezone = $timezone instanceof \DateTimeZone ? $timezone : new \DateTimeZone($timezone);
    }

    /**
     * Gets the default timezone to be used by the date filter.
     *
     * @return \DateTimeZone The default timezone currently in use
     */
    public function getTimezone()
    {
        if (null === $this->timezone) {
            $this->timezone = new \DateTimeZone(date_default_timezone_get());
        }

        return $this->timezone;
    }

    /**
     * Sets the default format to be used by the number_format filter.
     *
     * @param int    $decimal      the number of decimal places to use
     * @param string $decimalPoint the character(s) to use for the decimal point
     * @param string $thousandSep  the character(s) to use for the thousands separator
     */
    public function setNumberFormat($decimal, $decimalPoint, $thousandSep)
    {
        $this->numberFormat = [$decimal, $decimalPoint, $thousandSep];
    }

    /**
     * Get the default format used by the number_format filter.
     *
     * @return array The arguments for number_format()
     */
    public function getNumberFormat()
    {
        return $this->numberFormat;
    }

    public function getTokenParsers()
    {
        return [
            new ApplyTokenParser(),
            new ForTokenParser(),
            new IfTokenParser(),
            new ExtendsTokenParser(),
            new IncludeTokenParser(),
            new BlockTokenParser(),
            new UseTokenParser(),
            new FilterTokenParser(),
            new MacroTokenParser(),
            new ImportTokenParser(),
            new FromTokenParser(),
            new SetTokenParser(),
            new SpacelessTokenParser(),
            new FlushTokenParser(),
            new DoTokenParser(),
            new EmbedTokenParser(),
            new WithTokenParser(),
            new DeprecatedTokenParser(),
        ];
    }

    public function getFilters()
    {
        $filters = [
            // formatting filters
            new TwigFilter('date', 'twig_date_format_filter', ['needs_environment' => true]),
            new TwigFilter('date_modify', 'twig_date_modify_filter', ['needs_environment' => true]),
            new TwigFilter('format', 'sprintf'),
            new TwigFilter('replace', 'twig_replace_filter'),
            new TwigFilter('number_format', 'twig_number_format_filter', ['needs_environment' => true]),
            new TwigFilter('abs', 'abs'),
            new TwigFilter('round', 'twig_round'),

            // encoding
            new TwigFilter('url_encode', 'twig_urlencode_filter'),
            new TwigFilter('json_encode', 'twig_jsonencode_filter'),
            new TwigFilter('convert_encoding', 'twig_convert_encoding'),

            // string filters
            new TwigFilter('title', 'twig_title_string_filter', ['needs_environment' => true]),
            new TwigFilter('capitalize', 'twig_capitalize_string_filter', ['needs_environment' => true]),
            new TwigFilter('upper', 'strtoupper'),
            new TwigFilter('lower', 'strtolower'),
            new TwigFilter('striptags', 'strip_tags'),
            new TwigFilter('trim', 'twig_trim_filter'),
            new TwigFilter('nl2br', 'nl2br', ['pre_escape' => 'html', 'is_safe' => ['html']]),
            new TwigFilter('spaceless', 'twig_spaceless', ['is_safe' => ['html']]),

            // array helpers
            new TwigFilter('join', 'twig_join_filter'),
            new TwigFilter('split', 'twig_split_filter', ['needs_environment' => true]),
            new TwigFilter('sort', 'twig_sort_filter'),
            new TwigFilter('merge', 'twig_array_merge'),
            new TwigFilter('batch', 'twig_array_batch'),
            new TwigFilter('filter', 'twig_array_filter'),
            new TwigFilter('map', 'twig_array_map'),
            new TwigFilter('reduce', 'twig_array_reduce'),

            // string/array filters
            new TwigFilter('reverse', 'twig_reverse_filter', ['needs_environment' => true]),
            new TwigFilter('length', 'twig_length_filter', ['needs_environment' => true]),
            new TwigFilter('slice', 'twig_slice', ['needs_environment' => true]),
            new TwigFilter('first', 'twig_first', ['needs_environment' => true]),
            new TwigFilter('last', 'twig_last', ['needs_environment' => true]),

            // iteration and runtime
            new TwigFilter('default', '_twig_default_filter', ['node_class' => '\Twig\Node\Expression\Filter\DefaultFilter']),
            new TwigFilter('keys', 'twig_get_array_keys_filter'),

            // escaping
            new TwigFilter('escape', 'twig_escape_filter', ['needs_environment' => true, 'is_safe_callback' => 'twig_escape_filter_is_safe']),
            new TwigFilter('e', 'twig_escape_filter', ['needs_environment' => true, 'is_safe_callback' => 'twig_escape_filter_is_safe']),
        ];

        if (\function_exists('mb_get_info')) {
            $filters[] = new TwigFilter('upper', 'twig_upper_filter', ['needs_environment' => true]);
            $filters[] = new TwigFilter('lower', 'twig_lower_filter', ['needs_environment' => true]);
        }

        return $filters;
    }

    public function getFunctions()
    {
        return [
            new TwigFunction('max', 'max'),
            new TwigFunction('min', 'min'),
            new TwigFunction('range', 'range'),
            new TwigFunction('constant', 'twig_constant'),
            new TwigFunction('cycle', 'twig_cycle'),
            new TwigFunction('random', 'twig_random', ['needs_environment' => true]),
            new TwigFunction('date', 'twig_date_converter', ['needs_environment' => true]),
            new TwigFunction('include', 'twig_include', ['needs_environment' => true, 'needs_context' => true, 'is_safe' => ['all']]),
            new TwigFunction('source', 'twig_source', ['needs_environment' => true, 'is_safe' => ['all']]),
        ];
    }

    public function getTests()
    {
        return [
            new TwigTest('even', null, ['node_class' => '\Twig\Node\Expression\Test\EvenTest']),
            new TwigTest('odd', null, ['node_class' => '\Twig\Node\Expression\Test\OddTest']),
            new TwigTest('defined', null, ['node_class' => '\Twig\Node\Expression\Test\DefinedTest']),
            new TwigTest('sameas', null, ['node_class' => '\Twig\Node\Expression\Test\SameasTest', 'deprecated' => '1.21', 'alternative' => 'same as']),
            new TwigTest('same as', null, ['node_class' => '\Twig\Node\Expression\Test\SameasTest']),
            new TwigTest('none', null, ['node_class' => '\Twig\Node\Expression\Test\NullTest']),
            new TwigTest('null', null, ['node_class' => '\Twig\Node\Expression\Test\NullTest']),
            new TwigTest('divisibleby', null, ['node_class' => '\Twig\Node\Expression\Test\DivisiblebyTest', 'deprecated' => '1.21', 'alternative' => 'divisible by']),
            new TwigTest('divisible by', null, ['node_class' => '\Twig\Node\Expression\Test\DivisiblebyTest']),
            new TwigTest('constant', null, ['node_class' => '\Twig\Node\Expression\Test\ConstantTest']),
            new TwigTest('empty', 'twig_test_empty'),
            new TwigTest('iterable', 'twig_test_iterable'),
        ];
    }

    public function getOperators()
    {
        return [
            [
                'not' => ['precedence' => 50, 'class' => '\Twig\Node\Expression\Unary\NotUnary'],
                '-' => ['precedence' => 500, 'class' => '\Twig\Node\Expression\Unary\NegUnary'],
                '+' => ['precedence' => 500, 'class' => '\Twig\Node\Expression\Unary\PosUnary'],
            ],
            [
                'or' => ['precedence' => 10, 'class' => '\Twig\Node\Expression\Binary\OrBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                'and' => ['precedence' => 15, 'class' => '\Twig\Node\Expression\Binary\AndBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                'b-or' => ['precedence' => 16, 'class' => '\Twig\Node\Expression\Binary\BitwiseOrBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                'b-xor' => ['precedence' => 17, 'class' => '\Twig\Node\Expression\Binary\BitwiseXorBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                'b-and' => ['precedence' => 18, 'class' => '\Twig\Node\Expression\Binary\BitwiseAndBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                '==' => ['precedence' => 20, 'class' => '\Twig\Node\Expression\Binary\EqualBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                '!=' => ['precedence' => 20, 'class' => '\Twig\Node\Expression\Binary\NotEqualBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                '<' => ['precedence' => 20, 'class' => '\Twig\Node\Expression\Binary\LessBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                '>' => ['precedence' => 20, 'class' => '\Twig\Node\Expression\Binary\GreaterBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                '>=' => ['precedence' => 20, 'class' => '\Twig\Node\Expression\Binary\GreaterEqualBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                '<=' => ['precedence' => 20, 'class' => '\Twig\Node\Expression\Binary\LessEqualBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                'not in' => ['precedence' => 20, 'class' => '\Twig\Node\Expression\Binary\NotInBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                'in' => ['precedence' => 20, 'class' => '\Twig\Node\Expression\Binary\InBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                'matches' => ['precedence' => 20, 'class' => '\Twig\Node\Expression\Binary\MatchesBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                'starts with' => ['precedence' => 20, 'class' => '\Twig\Node\Expression\Binary\StartsWithBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                'ends with' => ['precedence' => 20, 'class' => '\Twig\Node\Expression\Binary\EndsWithBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                '..' => ['precedence' => 25, 'class' => '\Twig\Node\Expression\Binary\RangeBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                '+' => ['precedence' => 30, 'class' => '\Twig\Node\Expression\Binary\AddBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                '-' => ['precedence' => 30, 'class' => '\Twig\Node\Expression\Binary\SubBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                '~' => ['precedence' => 40, 'class' => '\Twig\Node\Expression\Binary\ConcatBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                '*' => ['precedence' => 60, 'class' => '\Twig\Node\Expression\Binary\MulBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                '/' => ['precedence' => 60, 'class' => '\Twig\Node\Expression\Binary\DivBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                '//' => ['precedence' => 60, 'class' => '\Twig\Node\Expression\Binary\FloorDivBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                '%' => ['precedence' => 60, 'class' => '\Twig\Node\Expression\Binary\ModBinary', 'associativity' => ExpressionParser::OPERATOR_LEFT],
                'is' => ['precedence' => 100, 'associativity' => ExpressionParser::OPERATOR_LEFT],
                'is not' => ['precedence' => 100, 'associativity' => ExpressionParser::OPERATOR_LEFT],
                '**' => ['precedence' => 200, 'class' => '\Twig\Node\Expression\Binary\PowerBinary', 'associativity' => ExpressionParser::OPERATOR_RIGHT],
                '??' => ['precedence' => 300, 'class' => '\Twig\Node\Expression\NullCoalesceExpression', 'associativity' => ExpressionParser::OPERATOR_RIGHT],
            ],
        ];
    }

    public function getName()
    {
        return 'core';
    }
}

class_alias('Twig\Extension\CoreExtension', 'Twig_Extension_Core');
}

namespace {
use Twig\Environment;
use Twig\Error\LoaderError;
use Twig\Error\RuntimeError;
use Twig\Loader\SourceContextLoaderInterface;
use Twig\Markup;
use Twig\Node\Expression\ConstantExpression;
use Twig\Node\Node;

/**
 * Cycles over a value.
 *
 * @param \ArrayAccess|array $values
 * @param int                $position The cycle position
 *
 * @return string The next value in the cycle
 */
function twig_cycle($values, $position)
{
    if (!\is_array($values) && !$values instanceof \ArrayAccess) {
        return $values;
    }

    return $values[$position % \count($values)];
}

/**
 * Returns a random value depending on the supplied parameter type:
 * - a random item from a \Traversable or array
 * - a random character from a string
 * - a random integer between 0 and the integer parameter.
 *
 * @param \Traversable|array|int|float|string $values The values to pick a random item from
 * @param int|null                            $max    Maximum value used when $values is an int
 *
 * @throws RuntimeError when $values is an empty array (does not apply to an empty string which is returned as is)
 *
 * @return mixed A random value from the given sequence
 */
function twig_random(Environment $env, $values = null, $max = null)
{
    if (null === $values) {
        return null === $max ? mt_rand() : mt_rand(0, $max);
    }

    if (\is_int($values) || \is_float($values)) {
        if (null === $max) {
            if ($values < 0) {
                $max = 0;
                $min = $values;
            } else {
                $max = $values;
                $min = 0;
            }
        } else {
            $min = $values;
            $max = $max;
        }

        return mt_rand($min, $max);
    }

    if (\is_string($values)) {
        if ('' === $values) {
            return '';
        }
        if (null !== $charset = $env->getCharset()) {
            if ('UTF-8' !== $charset) {
                $values = twig_convert_encoding($values, 'UTF-8', $charset);
            }

            // unicode version of str_split()
            // split at all positions, but not after the start and not before the end
            $values = preg_split('/(?<!^)(?!$)/u', $values);

            if ('UTF-8' !== $charset) {
                foreach ($values as $i => $value) {
                    $values[$i] = twig_convert_encoding($value, $charset, 'UTF-8');
                }
            }
        } else {
            return $values[mt_rand(0, \strlen($values) - 1)];
        }
    }

    if (!twig_test_iterable($values)) {
        return $values;
    }

    $values = twig_to_array($values);

    if (0 === \count($values)) {
        throw new RuntimeError('The random function cannot pick from an empty array.');
    }

    return $values[array_rand($values, 1)];
}

/**
 * Converts a date to the given format.
 *
 *   {{ post.published_at|date("m/d/Y") }}
 *
 * @param \DateTime|\DateTimeInterface|\DateInterval|string $date     A date
 * @param string|null                                       $format   The target format, null to use the default
 * @param \DateTimeZone|string|false|null                   $timezone The target timezone, null to use the default, false to leave unchanged
 *
 * @return string The formatted date
 */
function twig_date_format_filter(Environment $env, $date, $format = null, $timezone = null)
{
    if (null === $format) {
        $formats = $env->getExtension('\Twig\Extension\CoreExtension')->getDateFormat();
        $format = $date instanceof \DateInterval ? $formats[1] : $formats[0];
    }

    if ($date instanceof \DateInterval) {
        return $date->format($format);
    }

    return twig_date_converter($env, $date, $timezone)->format($format);
}

/**
 * Returns a new date object modified.
 *
 *   {{ post.published_at|date_modify("-1day")|date("m/d/Y") }}
 *
 * @param \DateTime|string $date     A date
 * @param string           $modifier A modifier string
 *
 * @return \DateTime
 */
function twig_date_modify_filter(Environment $env, $date, $modifier)
{
    $date = twig_date_converter($env, $date, false);
    $resultDate = $date->modify($modifier);

    // This is a hack to ensure PHP 5.2 support and support for \DateTimeImmutable
    // \DateTime::modify does not return the modified \DateTime object < 5.3.0
    // and \DateTimeImmutable does not modify $date.
    return null === $resultDate ? $date : $resultDate;
}

/**
 * Converts an input to a \DateTime instance.
 *
 *    {% if date(user.created_at) < date('+2days') %}
 *      {# do something #}
 *    {% endif %}
 *
 * @param \DateTime|\DateTimeInterface|string|null $date     A date
 * @param \DateTimeZone|string|false|null          $timezone The target timezone, null to use the default, false to leave unchanged
 *
 * @return \DateTime
 */
function twig_date_converter(Environment $env, $date = null, $timezone = null)
{
    // determine the timezone
    if (false !== $timezone) {
        if (null === $timezone) {
            $timezone = $env->getExtension('\Twig\Extension\CoreExtension')->getTimezone();
        } elseif (!$timezone instanceof \DateTimeZone) {
            $timezone = new \DateTimeZone($timezone);
        }
    }

    // immutable dates
    if ($date instanceof \DateTimeImmutable) {
        return false !== $timezone ? $date->setTimezone($timezone) : $date;
    }

    if ($date instanceof \DateTime || $date instanceof \DateTimeInterface) {
        $date = clone $date;
        if (false !== $timezone) {
            $date->setTimezone($timezone);
        }

        return $date;
    }

    if (null === $date || 'now' === $date) {
        return new \DateTime($date, false !== $timezone ? $timezone : $env->getExtension('\Twig\Extension\CoreExtension')->getTimezone());
    }

    $asString = (string) $date;
    if (ctype_digit($asString) || (!empty($asString) && '-' === $asString[0] && ctype_digit(substr($asString, 1)))) {
        $date = new \DateTime('@'.$date);
    } else {
        $date = new \DateTime($date, $env->getExtension('\Twig\Extension\CoreExtension')->getTimezone());
    }

    if (false !== $timezone) {
        $date->setTimezone($timezone);
    }

    return $date;
}

/**
 * Replaces strings within a string.
 *
 * @param string             $str  String to replace in
 * @param array|\Traversable $from Replace values
 * @param string|null        $to   Replace to, deprecated (@see https://secure.php.net/manual/en/function.strtr.php)
 *
 * @return string
 */
function twig_replace_filter($str, $from, $to = null)
{
    if (\is_string($from) && \is_string($to)) {
        @trigger_error('Using "replace" with character by character replacement is deprecated since version 1.22 and will be removed in Twig 2.0', E_USER_DEPRECATED);

        return strtr($str, $from, $to);
    }

    if (!twig_test_iterable($from)) {
        throw new RuntimeError(sprintf('The "replace" filter expects an array or "Traversable" as replace values, got "%s".', \is_object($from) ? \get_class($from) : \gettype($from)));
    }

    return strtr($str, twig_to_array($from));
}

/**
 * Rounds a number.
 *
 * @param int|float $value     The value to round
 * @param int|float $precision The rounding precision
 * @param string    $method    The method to use for rounding
 *
 * @return int|float The rounded number
 */
function twig_round($value, $precision = 0, $method = 'common')
{
    if ('common' == $method) {
        return round($value, $precision);
    }

    if ('ceil' != $method && 'floor' != $method) {
        throw new RuntimeError('The round filter only supports the "common", "ceil", and "floor" methods.');
    }

    return $method($value * pow(10, $precision)) / pow(10, $precision);
}

/**
 * Number format filter.
 *
 * All of the formatting options can be left null, in that case the defaults will
 * be used.  Supplying any of the parameters will override the defaults set in the
 * environment object.
 *
 * @param mixed  $number       A float/int/string of the number to format
 * @param int    $decimal      the number of decimal points to display
 * @param string $decimalPoint the character(s) to use for the decimal point
 * @param string $thousandSep  the character(s) to use for the thousands separator
 *
 * @return string The formatted number
 */
function twig_number_format_filter(Environment $env, $number, $decimal = null, $decimalPoint = null, $thousandSep = null)
{
    $defaults = $env->getExtension('\Twig\Extension\CoreExtension')->getNumberFormat();
    if (null === $decimal) {
        $decimal = $defaults[0];
    }

    if (null === $decimalPoint) {
        $decimalPoint = $defaults[1];
    }

    if (null === $thousandSep) {
        $thousandSep = $defaults[2];
    }

    return number_format((float) $number, $decimal, $decimalPoint, $thousandSep);
}

/**
 * URL encodes (RFC 3986) a string as a path segment or an array as a query string.
 *
 * @param string|array $url A URL or an array of query parameters
 *
 * @return string The URL encoded value
 */
function twig_urlencode_filter($url)
{
    if (\is_array($url)) {
        if (\defined('PHP_QUERY_RFC3986')) {
            return http_build_query($url, '', '&', PHP_QUERY_RFC3986);
        }

        return http_build_query($url, '', '&');
    }

    return rawurlencode($url);
}

/**
 * JSON encodes a variable.
 *
 * @param mixed $value   the value to encode
 * @param int   $options Bitmask consisting of JSON_HEX_QUOT, JSON_HEX_TAG, JSON_HEX_AMP, JSON_HEX_APOS, JSON_NUMERIC_CHECK, JSON_PRETTY_PRINT, JSON_UNESCAPED_SLASHES, JSON_FORCE_OBJECT
 *
 * @return mixed The JSON encoded value
 */
function twig_jsonencode_filter($value, $options = 0)
{
    if ($value instanceof Markup) {
        $value = (string) $value;
    } elseif (\is_array($value)) {
        array_walk_recursive($value, '_twig_markup2string');
    }

    return json_encode($value, $options);
}

function _twig_markup2string(&$value)
{
    if ($value instanceof Markup) {
        $value = (string) $value;
    }
}

/**
 * Merges an array with another one.
 *
 *  {% set items = { 'apple': 'fruit', 'orange': 'fruit' } %}
 *
 *  {% set items = items|merge({ 'peugeot': 'car' }) %}
 *
 *  {# items now contains { 'apple': 'fruit', 'orange': 'fruit', 'peugeot': 'car' } #}
 *
 * @param array|\Traversable $arr1 An array
 * @param array|\Traversable $arr2 An array
 *
 * @return array The merged array
 */
function twig_array_merge($arr1, $arr2)
{
    if (!twig_test_iterable($arr1)) {
        throw new RuntimeError(sprintf('The merge filter only works with arrays or "Traversable", got "%s" as first argument.', \gettype($arr1)));
    }

    if (!twig_test_iterable($arr2)) {
        throw new RuntimeError(sprintf('The merge filter only works with arrays or "Traversable", got "%s" as second argument.', \gettype($arr2)));
    }

    return array_merge(twig_to_array($arr1), twig_to_array($arr2));
}

/**
 * Slices a variable.
 *
 * @param mixed $item         A variable
 * @param int   $start        Start of the slice
 * @param int   $length       Size of the slice
 * @param bool  $preserveKeys Whether to preserve key or not (when the input is an array)
 *
 * @return mixed The sliced variable
 */
function twig_slice(Environment $env, $item, $start, $length = null, $preserveKeys = false)
{
    if ($item instanceof \Traversable) {
        while ($item instanceof \IteratorAggregate) {
            $item = $item->getIterator();
        }

        if ($start >= 0 && $length >= 0 && $item instanceof \Iterator) {
            try {
                return iterator_to_array(new \LimitIterator($item, $start, null === $length ? -1 : $length), $preserveKeys);
            } catch (\OutOfBoundsException $e) {
                return [];
            }
        }

        $item = iterator_to_array($item, $preserveKeys);
    }

    if (\is_array($item)) {
        return \array_slice($item, $start, $length, $preserveKeys);
    }

    $item = (string) $item;

    if (\function_exists('mb_get_info') && null !== $charset = $env->getCharset()) {
        return (string) mb_substr($item, $start, null === $length ? mb_strlen($item, $charset) - $start : $length, $charset);
    }

    return (string) (null === $length ? substr($item, $start) : substr($item, $start, $length));
}

/**
 * Returns the first element of the item.
 *
 * @param mixed $item A variable
 *
 * @return mixed The first element of the item
 */
function twig_first(Environment $env, $item)
{
    $elements = twig_slice($env, $item, 0, 1, false);

    return \is_string($elements) ? $elements : current($elements);
}

/**
 * Returns the last element of the item.
 *
 * @param mixed $item A variable
 *
 * @return mixed The last element of the item
 */
function twig_last(Environment $env, $item)
{
    $elements = twig_slice($env, $item, -1, 1, false);

    return \is_string($elements) ? $elements : current($elements);
}

/**
 * Joins the values to a string.
 *
 * The separators between elements are empty strings per default, you can define them with the optional parameters.
 *
 *  {{ [1, 2, 3]|join(', ', ' and ') }}
 *  {# returns 1, 2 and 3 #}
 *
 *  {{ [1, 2, 3]|join('|') }}
 *  {# returns 1|2|3 #}
 *
 *  {{ [1, 2, 3]|join }}
 *  {# returns 123 #}
 *
 * @param array       $value An array
 * @param string      $glue  The separator
 * @param string|null $and   The separator for the last pair
 *
 * @return string The concatenated string
 */
function twig_join_filter($value, $glue = '', $and = null)
{
    if (!twig_test_iterable($value)) {
        $value = (array) $value;
    }

    $value = twig_to_array($value, false);

    if (0 === \count($value)) {
        return '';
    }

    if (null === $and || $and === $glue) {
        return implode($glue, $value);
    }

    if (1 === \count($value)) {
        return $value[0];
    }

    return implode($glue, \array_slice($value, 0, -1)).$and.$value[\count($value) - 1];
}

/**
 * Splits the string into an array.
 *
 *  {{ "one,two,three"|split(',') }}
 *  {# returns [one, two, three] #}
 *
 *  {{ "one,two,three,four,five"|split(',', 3) }}
 *  {# returns [one, two, "three,four,five"] #}
 *
 *  {{ "123"|split('') }}
 *  {# returns [1, 2, 3] #}
 *
 *  {{ "aabbcc"|split('', 2) }}
 *  {# returns [aa, bb, cc] #}
 *
 * @param string $value     A string
 * @param string $delimiter The delimiter
 * @param int    $limit     The limit
 *
 * @return array The split string as an array
 */
function twig_split_filter(Environment $env, $value, $delimiter, $limit = null)
{
    if (\strlen($delimiter) > 0) {
        return null === $limit ? explode($delimiter, $value) : explode($delimiter, $value, $limit);
    }

    if (!\function_exists('mb_get_info') || null === $charset = $env->getCharset()) {
        return str_split($value, null === $limit ? 1 : $limit);
    }

    if ($limit <= 1) {
        return preg_split('/(?<!^)(?!$)/u', $value);
    }

    $length = mb_strlen($value, $charset);
    if ($length < $limit) {
        return [$value];
    }

    $r = [];
    for ($i = 0; $i < $length; $i += $limit) {
        $r[] = mb_substr($value, $i, $limit, $charset);
    }

    return $r;
}

// The '_default' filter is used internally to avoid using the ternary operator
// which costs a lot for big contexts (before PHP 5.4). So, on average,
// a function call is cheaper.
/**
 * @internal
 */
function _twig_default_filter($value, $default = '')
{
    if (twig_test_empty($value)) {
        return $default;
    }

    return $value;
}

/**
 * Returns the keys for the given array.
 *
 * It is useful when you want to iterate over the keys of an array:
 *
 *  {% for key in array|keys %}
 *      {# ... #}
 *  {% endfor %}
 *
 * @param array $array An array
 *
 * @return array The keys
 */
function twig_get_array_keys_filter($array)
{
    if ($array instanceof \Traversable) {
        while ($array instanceof \IteratorAggregate) {
            $array = $array->getIterator();
        }

        if ($array instanceof \Iterator) {
            $keys = [];
            $array->rewind();
            while ($array->valid()) {
                $keys[] = $array->key();
                $array->next();
            }

            return $keys;
        }

        $keys = [];
        foreach ($array as $key => $item) {
            $keys[] = $key;
        }

        return $keys;
    }

    if (!\is_array($array)) {
        return [];
    }

    return array_keys($array);
}

/**
 * Reverses a variable.
 *
 * @param array|\Traversable|string $item         An array, a \Traversable instance, or a string
 * @param bool                      $preserveKeys Whether to preserve key or not
 *
 * @return mixed The reversed input
 */
function twig_reverse_filter(Environment $env, $item, $preserveKeys = false)
{
    if ($item instanceof \Traversable) {
        return array_reverse(iterator_to_array($item), $preserveKeys);
    }

    if (\is_array($item)) {
        return array_reverse($item, $preserveKeys);
    }

    if (null !== $charset = $env->getCharset()) {
        $string = (string) $item;

        if ('UTF-8' !== $charset) {
            $item = twig_convert_encoding($string, 'UTF-8', $charset);
        }

        preg_match_all('/./us', $item, $matches);

        $string = implode('', array_reverse($matches[0]));

        if ('UTF-8' !== $charset) {
            $string = twig_convert_encoding($string, $charset, 'UTF-8');
        }

        return $string;
    }

    return strrev((string) $item);
}

/**
 * Sorts an array.
 *
 * @param array|\Traversable $array
 *
 * @return array
 */
function twig_sort_filter($array)
{
    if ($array instanceof \Traversable) {
        $array = iterator_to_array($array);
    } elseif (!\is_array($array)) {
        throw new RuntimeError(sprintf('The sort filter only works with arrays or "Traversable", got "%s".', \gettype($array)));
    }

    asort($array);

    return $array;
}

/**
 * @internal
 */
function twig_in_filter($value, $compare)
{
    if ($value instanceof Markup) {
        $value = (string) $value;
    }
    if ($compare instanceof Markup) {
        $compare = (string) $compare;
    }

    if (\is_array($compare)) {
        return \in_array($value, $compare, \is_object($value) || \is_resource($value));
    } elseif (\is_string($compare) && (\is_string($value) || \is_int($value) || \is_float($value))) {
        return '' === $value || false !== strpos($compare, (string) $value);
    } elseif ($compare instanceof \Traversable) {
        if (\is_object($value) || \is_resource($value)) {
            foreach ($compare as $item) {
                if ($item === $value) {
                    return true;
                }
            }
        } else {
            foreach ($compare as $item) {
                if ($item == $value) {
                    return true;
                }
            }
        }

        return false;
    }

    return false;
}

/**
 * Returns a trimmed string.
 *
 * @return string
 *
 * @throws RuntimeError When an invalid trimming side is used (not a string or not 'left', 'right', or 'both')
 */
function twig_trim_filter($string, $characterMask = null, $side = 'both')
{
    if (null === $characterMask) {
        $characterMask = " \t\n\r\0\x0B";
    }

    switch ($side) {
        case 'both':
            return trim($string, $characterMask);
        case 'left':
            return ltrim($string, $characterMask);
        case 'right':
            return rtrim($string, $characterMask);
        default:
            throw new RuntimeError('Trimming side must be "left", "right" or "both".');
    }
}

/**
 * Removes whitespaces between HTML tags.
 *
 * @return string
 */
function twig_spaceless($content)
{
    return trim(preg_replace('/>\s+</', '><', $content));
}

/**
 * Escapes a string.
 *
 * @param mixed  $string     The value to be escaped
 * @param string $strategy   The escaping strategy
 * @param string $charset    The charset
 * @param bool   $autoescape Whether the function is called by the auto-escaping feature (true) or by the developer (false)
 *
 * @return string
 */
function twig_escape_filter(Environment $env, $string, $strategy = 'html', $charset = null, $autoescape = false)
{
    if ($autoescape && $string instanceof Markup) {
        return $string;
    }

    if (!\is_string($string)) {
        if (\is_object($string) && method_exists($string, '__toString')) {
            $string = (string) $string;
        } elseif (\in_array($strategy, ['html', 'js', 'css', 'html_attr', 'url'])) {
            return $string;
        }
    }

    if ('' === $string) {
        return '';
    }

    if (null === $charset) {
        $charset = $env->getCharset();
    }

    switch ($strategy) {
        case 'html':
            // see https://secure.php.net/htmlspecialchars

            // Using a static variable to avoid initializing the array
            // each time the function is called. Moving the declaration on the
            // top of the function slow downs other escaping strategies.
            static $htmlspecialcharsCharsets = [
                'ISO-8859-1' => true, 'ISO8859-1' => true,
                'ISO-8859-15' => true, 'ISO8859-15' => true,
                'utf-8' => true, 'UTF-8' => true,
                'CP866' => true, 'IBM866' => true, '866' => true,
                'CP1251' => true, 'WINDOWS-1251' => true, 'WIN-1251' => true,
                '1251' => true,
                'CP1252' => true, 'WINDOWS-1252' => true, '1252' => true,
                'KOI8-R' => true, 'KOI8-RU' => true, 'KOI8R' => true,
                'BIG5' => true, '950' => true,
                'GB2312' => true, '936' => true,
                'BIG5-HKSCS' => true,
                'SHIFT_JIS' => true, 'SJIS' => true, '932' => true,
                'EUC-JP' => true, 'EUCJP' => true,
                'ISO8859-5' => true, 'ISO-8859-5' => true, 'MACROMAN' => true,
            ];

            if (isset($htmlspecialcharsCharsets[$charset])) {
                return htmlspecialchars($string, ENT_QUOTES | ENT_SUBSTITUTE, $charset);
            }

            if (isset($htmlspecialcharsCharsets[strtoupper($charset)])) {
                // cache the lowercase variant for future iterations
                $htmlspecialcharsCharsets[$charset] = true;

                return htmlspecialchars($string, ENT_QUOTES | ENT_SUBSTITUTE, $charset);
            }

            $string = twig_convert_encoding($string, 'UTF-8', $charset);
            $string = htmlspecialchars($string, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8');

            return twig_convert_encoding($string, $charset, 'UTF-8');

        case 'js':
            // escape all non-alphanumeric characters
            // into their \x or \uHHHH representations
            if ('UTF-8' !== $charset) {
                $string = twig_convert_encoding($string, 'UTF-8', $charset);
            }

            if (!preg_match('//u', $string)) {
                throw new RuntimeError('The string to escape is not a valid UTF-8 string.');
            }

            $string = preg_replace_callback('#[^a-zA-Z0-9,\._]#Su', '_twig_escape_js_callback', $string);

            if ('UTF-8' !== $charset) {
                $string = twig_convert_encoding($string, $charset, 'UTF-8');
            }

            return $string;

        case 'css':
            if ('UTF-8' !== $charset) {
                $string = twig_convert_encoding($string, 'UTF-8', $charset);
            }

            if (!preg_match('//u', $string)) {
                throw new RuntimeError('The string to escape is not a valid UTF-8 string.');
            }

            $string = preg_replace_callback('#[^a-zA-Z0-9]#Su', '_twig_escape_css_callback', $string);

            if ('UTF-8' !== $charset) {
                $string = twig_convert_encoding($string, $charset, 'UTF-8');
            }

            return $string;

        case 'html_attr':
            if ('UTF-8' !== $charset) {
                $string = twig_convert_encoding($string, 'UTF-8', $charset);
            }

            if (!preg_match('//u', $string)) {
                throw new RuntimeError('The string to escape is not a valid UTF-8 string.');
            }

            $string = preg_replace_callback('#[^a-zA-Z0-9,\.\-_]#Su', '_twig_escape_html_attr_callback', $string);

            if ('UTF-8' !== $charset) {
                $string = twig_convert_encoding($string, $charset, 'UTF-8');
            }

            return $string;

        case 'url':
            return rawurlencode($string);

        default:
            static $escapers;

            if (null === $escapers) {
                $escapers = $env->getExtension('\Twig\Extension\CoreExtension')->getEscapers();
            }

            if (isset($escapers[$strategy])) {
                return \call_user_func($escapers[$strategy], $env, $string, $charset);
            }

            $validStrategies = implode(', ', array_merge(['html', 'js', 'url', 'css', 'html_attr'], array_keys($escapers)));

            throw new RuntimeError(sprintf('Invalid escaping strategy "%s" (valid ones: %s).', $strategy, $validStrategies));
    }
}

/**
 * @internal
 */
function twig_escape_filter_is_safe(Node $filterArgs)
{
    foreach ($filterArgs as $arg) {
        if ($arg instanceof ConstantExpression) {
            return [$arg->getAttribute('value')];
        }

        return [];
    }

    return ['html'];
}

if (\function_exists('mb_convert_encoding')) {
    function twig_convert_encoding($string, $to, $from)
    {
        return mb_convert_encoding($string, $to, $from);
    }
} elseif (\function_exists('iconv')) {
    function twig_convert_encoding($string, $to, $from)
    {
        return iconv($from, $to, $string);
    }
} else {
    function twig_convert_encoding($string, $to, $from)
    {
        throw new RuntimeError('No suitable convert encoding function (use UTF-8 as your encoding or install the iconv or mbstring extension).');
    }
}

if (\function_exists('mb_ord')) {
    function twig_ord($string)
    {
        return mb_ord($string, 'UTF-8');
    }
} else {
    function twig_ord($string)
    {
        $code = ($string = unpack('C*', substr($string, 0, 4))) ? $string[1] : 0;
        if (0xF0 <= $code) {
            return (($code - 0xF0) << 18) + (($string[2] - 0x80) << 12) + (($string[3] - 0x80) << 6) + $string[4] - 0x80;
        }
        if (0xE0 <= $code) {
            return (($code - 0xE0) << 12) + (($string[2] - 0x80) << 6) + $string[3] - 0x80;
        }
        if (0xC0 <= $code) {
            return (($code - 0xC0) << 6) + $string[2] - 0x80;
        }

        return $code;
    }
}

function _twig_escape_js_callback($matches)
{
    $char = $matches[0];

    /*
     * A few characters have short escape sequences in JSON and JavaScript.
     * Escape sequences supported only by JavaScript, not JSON, are ommitted.
     * \" is also supported but omitted, because the resulting string is not HTML safe.
     */
    static $shortMap = [
        '\\' => '\\\\',
        '/' => '\\/',
        "\x08" => '\b',
        "\x0C" => '\f',
        "\x0A" => '\n',
        "\x0D" => '\r',
        "\x09" => '\t',
    ];

    if (isset($shortMap[$char])) {
        return $shortMap[$char];
    }

    // \uHHHH
    $char = twig_convert_encoding($char, 'UTF-16BE', 'UTF-8');
    $char = strtoupper(bin2hex($char));

    if (4 >= \strlen($char)) {
        return sprintf('\u%04s', $char);
    }

    return sprintf('\u%04s\u%04s', substr($char, 0, -4), substr($char, -4));
}

function _twig_escape_css_callback($matches)
{
    $char = $matches[0];

    return sprintf('\\%X ', 1 === \strlen($char) ? \ord($char) : twig_ord($char));
}

/**
 * This function is adapted from code coming from Zend Framework.
 *
 * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (https://www.zend.com)
 * @license   https://framework.zend.com/license/new-bsd New BSD License
 */
function _twig_escape_html_attr_callback($matches)
{
    $chr = $matches[0];
    $ord = \ord($chr);

    /*
     * The following replaces characters undefined in HTML with the
     * hex entity for the Unicode replacement character.
     */
    if (($ord <= 0x1f && "\t" != $chr && "\n" != $chr && "\r" != $chr) || ($ord >= 0x7f && $ord <= 0x9f)) {
        return '&#xFFFD;';
    }

    /*
     * Check if the current character to escape has a name entity we should
     * replace it with while grabbing the hex value of the character.
     */
    if (1 == \strlen($chr)) {
        /*
         * While HTML supports far more named entities, the lowest common denominator
         * has become HTML5's XML Serialisation which is restricted to the those named
         * entities that XML supports. Using HTML entities would result in this error:
         *     XML Parsing Error: undefined entity
         */
        static $entityMap = [
            34 => '&quot;', /* quotation mark */
            38 => '&amp;',  /* ampersand */
            60 => '&lt;',   /* less-than sign */
            62 => '&gt;',   /* greater-than sign */
        ];

        if (isset($entityMap[$ord])) {
            return $entityMap[$ord];
        }

        return sprintf('&#x%02X;', $ord);
    }

    /*
     * Per OWASP recommendations, we'll use hex entities for any other
     * characters where a named entity does not exist.
     */
    return sprintf('&#x%04X;', twig_ord($chr));
}

// add multibyte extensions if possible
if (\function_exists('mb_get_info')) {
    /**
     * Returns the length of a variable.
     *
     * @param mixed $thing A variable
     *
     * @return int The length of the value
     */
    function twig_length_filter(Environment $env, $thing)
    {
        if (null === $thing) {
            return 0;
        }

        if (is_scalar($thing)) {
            return mb_strlen($thing, $env->getCharset());
        }

        if ($thing instanceof \Countable || \is_array($thing) || $thing instanceof \SimpleXMLElement) {
            return \count($thing);
        }

        if ($thing instanceof \Traversable) {
            return iterator_count($thing);
        }

        if (\is_object($thing) && method_exists($thing, '__toString')) {
            return mb_strlen((string) $thing, $env->getCharset());
        }

        return 1;
    }

    /**
     * Converts a string to uppercase.
     *
     * @param string $string A string
     *
     * @return string The uppercased string
     */
    function twig_upper_filter(Environment $env, $string)
    {
        if (null !== $charset = $env->getCharset()) {
            return mb_strtoupper($string, $charset);
        }

        return strtoupper($string);
    }

    /**
     * Converts a string to lowercase.
     *
     * @param string $string A string
     *
     * @return string The lowercased string
     */
    function twig_lower_filter(Environment $env, $string)
    {
        if (null !== $charset = $env->getCharset()) {
            return mb_strtolower($string, $charset);
        }

        return strtolower($string);
    }

    /**
     * Returns a titlecased string.
     *
     * @param string $string A string
     *
     * @return string The titlecased string
     */
    function twig_title_string_filter(Environment $env, $string)
    {
        if (null !== $charset = $env->getCharset()) {
            return mb_convert_case($string, MB_CASE_TITLE, $charset);
        }

        return ucwords(strtolower($string));
    }

    /**
     * Returns a capitalized string.
     *
     * @param string $string A string
     *
     * @return string The capitalized string
     */
    function twig_capitalize_string_filter(Environment $env, $string)
    {
        if (null !== $charset = $env->getCharset()) {
            return mb_strtoupper(mb_substr($string, 0, 1, $charset), $charset).mb_strtolower(mb_substr($string, 1, mb_strlen($string, $charset), $charset), $charset);
        }

        return ucfirst(strtolower($string));
    }
}
// and byte fallback
else {
    /**
     * Returns the length of a variable.
     *
     * @param mixed $thing A variable
     *
     * @return int The length of the value
     */
    function twig_length_filter(Environment $env, $thing)
    {
        if (null === $thing) {
            return 0;
        }

        if (is_scalar($thing)) {
            return \strlen($thing);
        }

        if ($thing instanceof \SimpleXMLElement) {
            return \count($thing);
        }

        if (\is_object($thing) && method_exists($thing, '__toString') && !$thing instanceof \Countable) {
            return \strlen((string) $thing);
        }

        if ($thing instanceof \Countable || \is_array($thing)) {
            return \count($thing);
        }

        if ($thing instanceof \IteratorAggregate) {
            return iterator_count($thing);
        }

        return 1;
    }

    /**
     * Returns a titlecased string.
     *
     * @param string $string A string
     *
     * @return string The titlecased string
     */
    function twig_title_string_filter(Environment $env, $string)
    {
        return ucwords(strtolower($string));
    }

    /**
     * Returns a capitalized string.
     *
     * @param string $string A string
     *
     * @return string The capitalized string
     */
    function twig_capitalize_string_filter(Environment $env, $string)
    {
        return ucfirst(strtolower($string));
    }
}

/**
 * @internal
 */
function twig_ensure_traversable($seq)
{
    if ($seq instanceof \Traversable || \is_array($seq)) {
        return $seq;
    }

    return [];
}

/**
 * @internal
 */
function twig_to_array($seq, $preserveKeys = true)
{
    if ($seq instanceof \Traversable) {
        return iterator_to_array($seq, $preserveKeys);
    }

    if (!\is_array($seq)) {
        return $seq;
    }

    return $preserveKeys ? $seq : array_values($seq);
}

/**
 * Checks if a variable is empty.
 *
 *    {# evaluates to true if the foo variable is null, false, or the empty string #}
 *    {% if foo is empty %}
 *        {# ... #}
 *    {% endif %}
 *
 * @param mixed $value A variable
 *
 * @return bool true if the value is empty, false otherwise
 */
function twig_test_empty($value)
{
    if ($value instanceof \Countable) {
        return 0 == \count($value);
    }

    if ($value instanceof \Traversable) {
        return !iterator_count($value);
    }

    if (\is_object($value) && method_exists($value, '__toString')) {
        return '' === (string) $value;
    }

    return '' === $value || false === $value || null === $value || [] === $value;
}

/**
 * Checks if a variable is traversable.
 *
 *    {# evaluates to true if the foo variable is an array or a traversable object #}
 *    {% if foo is iterable %}
 *        {# ... #}
 *    {% endif %}
 *
 * @param mixed $value A variable
 *
 * @return bool true if the value is traversable
 */
function twig_test_iterable($value)
{
    return $value instanceof \Traversable || \is_array($value);
}

/**
 * Renders a template.
 *
 * @param array        $context
 * @param string|array $template      The template to render or an array of templates to try consecutively
 * @param array        $variables     The variables to pass to the template
 * @param bool         $withContext
 * @param bool         $ignoreMissing Whether to ignore missing templates or not
 * @param bool         $sandboxed     Whether to sandbox the template or not
 *
 * @return string The rendered template
 */
function twig_include(Environment $env, $context, $template, $variables = [], $withContext = true, $ignoreMissing = false, $sandboxed = false)
{
    $alreadySandboxed = false;
    $sandbox = null;
    if ($withContext) {
        $variables = array_merge($context, $variables);
    }

    if ($isSandboxed = $sandboxed && $env->hasExtension('\Twig\Extension\SandboxExtension')) {
        $sandbox = $env->getExtension('\Twig\Extension\SandboxExtension');
        if (!$alreadySandboxed = $sandbox->isSandboxed()) {
            $sandbox->enableSandbox();
        }
    }

    $loaded = null;
    try {
        $loaded = $env->resolveTemplate($template);
    } catch (LoaderError $e) {
        if (!$ignoreMissing) {
            if ($isSandboxed && !$alreadySandboxed) {
                $sandbox->disableSandbox();
            }

            throw $e;
        }
    } catch (\Throwable $e) {
        if ($isSandboxed && !$alreadySandboxed) {
            $sandbox->disableSandbox();
        }

        throw $e;
    } catch (\Exception $e) {
        if ($isSandboxed && !$alreadySandboxed) {
            $sandbox->disableSandbox();
        }

        throw $e;
    }

    try {
        $ret = $loaded ? $loaded->render($variables) : '';
    } catch (\Exception $e) {
        if ($isSandboxed && !$alreadySandboxed) {
            $sandbox->disableSandbox();
        }

        throw $e;
    }

    if ($isSandboxed && !$alreadySandboxed) {
        $sandbox->disableSandbox();
    }

    return $ret;
}

/**
 * Returns a template content without rendering it.
 *
 * @param string $name          The template name
 * @param bool   $ignoreMissing Whether to ignore missing templates or not
 *
 * @return string The template source
 */
function twig_source(Environment $env, $name, $ignoreMissing = false)
{
    $loader = $env->getLoader();
    try {
        if (!$loader instanceof SourceContextLoaderInterface) {
            return $loader->getSource($name);
        } else {
            return $loader->getSourceContext($name)->getCode();
        }
    } catch (LoaderError $e) {
        if (!$ignoreMissing) {
            throw $e;
        }
    }
}

/**
 * Provides the ability to get constants from instances as well as class/global constants.
 *
 * @param string      $constant The name of the constant
 * @param object|null $object   The object to get the constant from
 *
 * @return string
 */
function twig_constant($constant, $object = null)
{
    if (null !== $object) {
        $constant = \get_class($object).'::'.$constant;
    }

    return \constant($constant);
}

/**
 * Checks if a constant exists.
 *
 * @param string      $constant The name of the constant
 * @param object|null $object   The object to get the constant from
 *
 * @return bool
 */
function twig_constant_is_defined($constant, $object = null)
{
    if (null !== $object) {
        $constant = \get_class($object).'::'.$constant;
    }

    return \defined($constant);
}

/**
 * Batches item.
 *
 * @param array $items An array of items
 * @param int   $size  The size of the batch
 * @param mixed $fill  A value used to fill missing items
 *
 * @return array
 */
function twig_array_batch($items, $size, $fill = null, $preserveKeys = true)
{
    if (!twig_test_iterable($items)) {
        throw new RuntimeError(sprintf('The "batch" filter expects an array or "Traversable", got "%s".', \is_object($items) ? \get_class($items) : \gettype($items)));
    }

    $size = ceil($size);

    $result = array_chunk(twig_to_array($items, $preserveKeys), $size, $preserveKeys);

    if (null !== $fill && $result) {
        $last = \count($result) - 1;
        if ($fillCount = $size - \count($result[$last])) {
            for ($i = 0; $i < $fillCount; ++$i) {
                $result[$last][] = $fill;
            }
        }
    }

    return $result;
}

function twig_array_filter($array, $arrow)
{
    if (\is_array($array)) {
        if (\PHP_VERSION_ID >= 50600) {
            return array_filter($array, $arrow, \ARRAY_FILTER_USE_BOTH);
        }

        return array_filter($array, $arrow);
    }

    // the IteratorIterator wrapping is needed as some internal PHP classes are \Traversable but do not implement \Iterator
    return new \CallbackFilterIterator(new \IteratorIterator($array), $arrow);
}

function twig_array_map($array, $arrow)
{
    $r = [];
    foreach ($array as $k => $v) {
        $r[$k] = $arrow($v, $k);
    }

    return $r;
}

function twig_array_reduce($array, $arrow, $initial = null)
{
    if (!\is_array($array)) {
        $array = iterator_to_array($array);
    }

    return array_reduce($array, $arrow, $initial);
}
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Extension;

/**
 * Enables usage of the deprecated Twig\Extension\AbstractExtension::getGlobals() method.
 *
 * Explicitly implement this interface if you really need to implement the
 * deprecated getGlobals() method in your extensions.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
interface GlobalsInterface
{
}

class_alias('Twig\Extension\GlobalsInterface', 'Twig_Extension_GlobalsInterface');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Extension;

use Twig\NodeVisitor\OptimizerNodeVisitor;

/**
 * @final
 */
class OptimizerExtension extends AbstractExtension
{
    protected $optimizers;

    public function __construct($optimizers = -1)
    {
        $this->optimizers = $optimizers;
    }

    public function getNodeVisitors()
    {
        return [new OptimizerNodeVisitor($this->optimizers)];
    }

    public function getName()
    {
        return 'optimizer';
    }
}

class_alias('Twig\Extension\OptimizerExtension', 'Twig_Extension_Optimizer');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Extension {
use Twig\TwigFunction;

/**
 * @final
 */
class DebugExtension extends AbstractExtension
{
    public function getFunctions()
    {
        // dump is safe if var_dump is overridden by xdebug
        $isDumpOutputHtmlSafe = \extension_loaded('xdebug')
            // false means that it was not set (and the default is on) or it explicitly enabled
            && (false === ini_get('xdebug.overload_var_dump') || ini_get('xdebug.overload_var_dump'))
            // false means that it was not set (and the default is on) or it explicitly enabled
            // xdebug.overload_var_dump produces HTML only when html_errors is also enabled
            && (false === ini_get('html_errors') || ini_get('html_errors'))
            || 'cli' === \PHP_SAPI
        ;

        return [
            new TwigFunction('dump', 'twig_var_dump', ['is_safe' => $isDumpOutputHtmlSafe ? ['html'] : [], 'needs_context' => true, 'needs_environment' => true, 'is_variadic' => true]),
        ];
    }

    public function getName()
    {
        return 'debug';
    }
}

class_alias('Twig\Extension\DebugExtension', 'Twig_Extension_Debug');
}

namespace {
use Twig\Environment;
use Twig\Template;
use Twig\TemplateWrapper;

function twig_var_dump(Environment $env, $context, array $vars = [])
{
    if (!$env->isDebug()) {
        return;
    }

    ob_start();

    if (!$vars) {
        $vars = [];
        foreach ($context as $key => $value) {
            if (!$value instanceof Template && !$value instanceof TemplateWrapper) {
                $vars[$key] = $value;
            }
        }

        var_dump($vars);
    } else {
        foreach ($vars as $var) {
            var_dump($var);
        }
    }

    return ob_get_clean();
}
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig;

/**
 * Represents a Token.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @final
 */
class Token
{
    protected $value;
    protected $type;
    protected $lineno;

    const EOF_TYPE = -1;
    const TEXT_TYPE = 0;
    const BLOCK_START_TYPE = 1;
    const VAR_START_TYPE = 2;
    const BLOCK_END_TYPE = 3;
    const VAR_END_TYPE = 4;
    const NAME_TYPE = 5;
    const NUMBER_TYPE = 6;
    const STRING_TYPE = 7;
    const OPERATOR_TYPE = 8;
    const PUNCTUATION_TYPE = 9;
    const INTERPOLATION_START_TYPE = 10;
    const INTERPOLATION_END_TYPE = 11;
    const ARROW_TYPE = 12;

    /**
     * @param int    $type   The type of the token
     * @param string $value  The token value
     * @param int    $lineno The line position in the source
     */
    public function __construct($type, $value, $lineno)
    {
        $this->type = $type;
        $this->value = $value;
        $this->lineno = $lineno;
    }

    public function __toString()
    {
        return sprintf('%s(%s)', self::typeToString($this->type, true), $this->value);
    }

    /**
     * Tests the current token for a type and/or a value.
     *
     * Parameters may be:
     *  * just type
     *  * type and value (or array of possible values)
     *  * just value (or array of possible values) (NAME_TYPE is used as type)
     *
     * @param array|string|int  $type   The type to test
     * @param array|string|null $values The token value
     *
     * @return bool
     */
    public function test($type, $values = null)
    {
        if (null === $values && !\is_int($type)) {
            $values = $type;
            $type = self::NAME_TYPE;
        }

        return ($this->type === $type) && (
            null === $values ||
            (\is_array($values) && \in_array($this->value, $values)) ||
            $this->value == $values
        );
    }

    /**
     * @return int
     */
    public function getLine()
    {
        return $this->lineno;
    }

    /**
     * @return int
     */
    public function getType()
    {
        return $this->type;
    }

    /**
     * @return string
     */
    public function getValue()
    {
        return $this->value;
    }

    /**
     * Returns the constant representation (internal) of a given type.
     *
     * @param int  $type  The type as an integer
     * @param bool $short Whether to return a short representation or not
     *
     * @return string The string representation
     */
    public static function typeToString($type, $short = false)
    {
        switch ($type) {
            case self::EOF_TYPE:
                $name = 'EOF_TYPE';
                break;
            case self::TEXT_TYPE:
                $name = 'TEXT_TYPE';
                break;
            case self::BLOCK_START_TYPE:
                $name = 'BLOCK_START_TYPE';
                break;
            case self::VAR_START_TYPE:
                $name = 'VAR_START_TYPE';
                break;
            case self::BLOCK_END_TYPE:
                $name = 'BLOCK_END_TYPE';
                break;
            case self::VAR_END_TYPE:
                $name = 'VAR_END_TYPE';
                break;
            case self::NAME_TYPE:
                $name = 'NAME_TYPE';
                break;
            case self::NUMBER_TYPE:
                $name = 'NUMBER_TYPE';
                break;
            case self::STRING_TYPE:
                $name = 'STRING_TYPE';
                break;
            case self::OPERATOR_TYPE:
                $name = 'OPERATOR_TYPE';
                break;
            case self::PUNCTUATION_TYPE:
                $name = 'PUNCTUATION_TYPE';
                break;
            case self::INTERPOLATION_START_TYPE:
                $name = 'INTERPOLATION_START_TYPE';
                break;
            case self::INTERPOLATION_END_TYPE:
                $name = 'INTERPOLATION_END_TYPE';
                break;
            case self::ARROW_TYPE:
                $name = 'ARROW_TYPE';
                break;
            default:
                throw new \LogicException(sprintf('Token of type "%s" does not exist.', $type));
        }

        return $short ? $name : 'Twig\Token::'.$name;
    }

    /**
     * Returns the English representation of a given type.
     *
     * @param int $type The type as an integer
     *
     * @return string The string representation
     */
    public static function typeToEnglish($type)
    {
        switch ($type) {
            case self::EOF_TYPE:
                return 'end of template';
            case self::TEXT_TYPE:
                return 'text';
            case self::BLOCK_START_TYPE:
                return 'begin of statement block';
            case self::VAR_START_TYPE:
                return 'begin of print statement';
            case self::BLOCK_END_TYPE:
                return 'end of statement block';
            case self::VAR_END_TYPE:
                return 'end of print statement';
            case self::NAME_TYPE:
                return 'name';
            case self::NUMBER_TYPE:
                return 'number';
            case self::STRING_TYPE:
                return 'string';
            case self::OPERATOR_TYPE:
                return 'operator';
            case self::PUNCTUATION_TYPE:
                return 'punctuation';
            case self::INTERPOLATION_START_TYPE:
                return 'begin of string interpolation';
            case self::INTERPOLATION_END_TYPE:
                return 'end of string interpolation';
            case self::ARROW_TYPE:
                return 'arrow function';
            default:
                throw new \LogicException(sprintf('Token of type "%s" does not exist.', $type));
        }
    }
}

class_alias('Twig\Token', 'Twig_Token');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Cache;

/**
 * Implements a cache on the filesystem.
 *
 * @author Andrew Tch <andrew@noop.lv>
 */
class FilesystemCache implements CacheInterface
{
    const FORCE_BYTECODE_INVALIDATION = 1;

    private $directory;
    private $options;

    /**
     * @param string $directory The root cache directory
     * @param int    $options   A set of options
     */
    public function __construct($directory, $options = 0)
    {
        $this->directory = rtrim($directory, '\/').'/';
        $this->options = $options;
    }

    public function generateKey($name, $className)
    {
        $hash = hash('sha256', $className);

        return $this->directory.$hash[0].$hash[1].'/'.$hash.'.php';
    }

    public function load($key)
    {
        if (file_exists($key)) {
            @include_once $key;
        }
    }

    public function write($key, $content)
    {
        $dir = \dirname($key);
        if (!is_dir($dir)) {
            if (false === @mkdir($dir, 0777, true)) {
                clearstatcache(true, $dir);
                if (!is_dir($dir)) {
                    throw new \RuntimeException(sprintf('Unable to create the cache directory (%s).', $dir));
                }
            }
        } elseif (!is_writable($dir)) {
            throw new \RuntimeException(sprintf('Unable to write in the cache directory (%s).', $dir));
        }

        $tmpFile = tempnam($dir, basename($key));
        if (false !== @file_put_contents($tmpFile, $content) && @rename($tmpFile, $key)) {
            @chmod($key, 0666 & ~umask());

            if (self::FORCE_BYTECODE_INVALIDATION == ($this->options & self::FORCE_BYTECODE_INVALIDATION)) {
                // Compile cached file into bytecode cache
                if (\function_exists('opcache_invalidate') && filter_var(ini_get('opcache.enable'), FILTER_VALIDATE_BOOLEAN)) {
                    @opcache_invalidate($key, true);
                } elseif (\function_exists('apc_compile_file')) {
                    apc_compile_file($key);
                }
            }

            return;
        }

        throw new \RuntimeException(sprintf('Failed to write cache file "%s".', $key));
    }

    public function getTimestamp($key)
    {
        if (!file_exists($key)) {
            return 0;
        }

        return (int) @filemtime($key);
    }
}

class_alias('Twig\Cache\FilesystemCache', 'Twig_Cache_Filesystem');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Cache;

/**
 * Implements a no-cache strategy.
 *
 * @final
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class NullCache implements CacheInterface
{
    public function generateKey($name, $className)
    {
        return '';
    }

    public function write($key, $content)
    {
    }

    public function load($key)
    {
    }

    public function getTimestamp($key)
    {
        return 0;
    }
}

class_alias('Twig\Cache\NullCache', 'Twig_Cache_Null');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Cache;

/**
 * Interface implemented by cache classes.
 *
 * It is highly recommended to always store templates on the filesystem to
 * benefit from the PHP opcode cache. This interface is mostly useful if you
 * need to implement a custom strategy for storing templates on the filesystem.
 *
 * @author Andrew Tch <andrew@noop.lv>
 */
interface CacheInterface
{
    /**
     * Generates a cache key for the given template class name.
     *
     * @param string $name      The template name
     * @param string $className The template class name
     *
     * @return string
     */
    public function generateKey($name, $className);

    /**
     * Writes the compiled template to cache.
     *
     * @param string $key     The cache key
     * @param string $content The template representation as a PHP class
     */
    public function write($key, $content);

    /**
     * Loads a template from the cache.
     *
     * @param string $key The cache key
     */
    public function load($key);

    /**
     * Returns the modification timestamp of a key.
     *
     * @param string $key The cache key
     *
     * @return int
     */
    public function getTimestamp($key);
}

class_alias('Twig\Cache\CacheInterface', 'Twig_CacheInterface');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\NodeVisitor;

use Twig\Environment;
use Twig\Node\AutoEscapeNode;
use Twig\Node\BlockNode;
use Twig\Node\BlockReferenceNode;
use Twig\Node\DoNode;
use Twig\Node\Expression\ConditionalExpression;
use Twig\Node\Expression\ConstantExpression;
use Twig\Node\Expression\FilterExpression;
use Twig\Node\Expression\InlinePrint;
use Twig\Node\ImportNode;
use Twig\Node\ModuleNode;
use Twig\Node\Node;
use Twig\Node\PrintNode;
use Twig\NodeTraverser;

/**
 * @final
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class EscaperNodeVisitor extends AbstractNodeVisitor
{
    protected $statusStack = [];
    protected $blocks = [];
    protected $safeAnalysis;
    protected $traverser;
    protected $defaultStrategy = false;
    protected $safeVars = [];

    public function __construct()
    {
        $this->safeAnalysis = new SafeAnalysisNodeVisitor();
    }

    protected function doEnterNode(Node $node, Environment $env)
    {
        if ($node instanceof ModuleNode) {
            if ($env->hasExtension('\Twig\Extension\EscaperExtension') && $defaultStrategy = $env->getExtension('\Twig\Extension\EscaperExtension')->getDefaultStrategy($node->getTemplateName())) {
                $this->defaultStrategy = $defaultStrategy;
            }
            $this->safeVars = [];
            $this->blocks = [];
        } elseif ($node instanceof AutoEscapeNode) {
            $this->statusStack[] = $node->getAttribute('value');
        } elseif ($node instanceof BlockNode) {
            $this->statusStack[] = isset($this->blocks[$node->getAttribute('name')]) ? $this->blocks[$node->getAttribute('name')] : $this->needEscaping($env);
        } elseif ($node instanceof ImportNode) {
            $this->safeVars[] = $node->getNode('var')->getAttribute('name');
        }

        return $node;
    }

    protected function doLeaveNode(Node $node, Environment $env)
    {
        if ($node instanceof ModuleNode) {
            $this->defaultStrategy = false;
            $this->safeVars = [];
            $this->blocks = [];
        } elseif ($node instanceof FilterExpression) {
            return $this->preEscapeFilterNode($node, $env);
        } elseif ($node instanceof PrintNode && false !== $type = $this->needEscaping($env)) {
            $expression = $node->getNode('expr');
            if ($expression instanceof ConditionalExpression && $this->shouldUnwrapConditional($expression, $env, $type)) {
                return new DoNode($this->unwrapConditional($expression, $env, $type), $expression->getTemplateLine());
            }

            return $this->escapePrintNode($node, $env, $type);
        }

        if ($node instanceof AutoEscapeNode || $node instanceof BlockNode) {
            array_pop($this->statusStack);
        } elseif ($node instanceof BlockReferenceNode) {
            $this->blocks[$node->getAttribute('name')] = $this->needEscaping($env);
        }

        return $node;
    }

    private function shouldUnwrapConditional(ConditionalExpression $expression, Environment $env, $type)
    {
        $expr2Safe = $this->isSafeFor($type, $expression->getNode('expr2'), $env);
        $expr3Safe = $this->isSafeFor($type, $expression->getNode('expr3'), $env);

        return $expr2Safe !== $expr3Safe;
    }

    private function unwrapConditional(ConditionalExpression $expression, Environment $env, $type)
    {
        // convert "echo a ? b : c" to "a ? echo b : echo c" recursively
        $expr2 = $expression->getNode('expr2');
        if ($expr2 instanceof ConditionalExpression && $this->shouldUnwrapConditional($expr2, $env, $type)) {
            $expr2 = $this->unwrapConditional($expr2, $env, $type);
        } else {
            $expr2 = $this->escapeInlinePrintNode(new InlinePrint($expr2, $expr2->getTemplateLine()), $env, $type);
        }
        $expr3 = $expression->getNode('expr3');
        if ($expr3 instanceof ConditionalExpression && $this->shouldUnwrapConditional($expr3, $env, $type)) {
            $expr3 = $this->unwrapConditional($expr3, $env, $type);
        } else {
            $expr3 = $this->escapeInlinePrintNode(new InlinePrint($expr3, $expr3->getTemplateLine()), $env, $type);
        }

        return new ConditionalExpression($expression->getNode('expr1'), $expr2, $expr3, $expression->getTemplateLine());
    }

    private function escapeInlinePrintNode(InlinePrint $node, Environment $env, $type)
    {
        $expression = $node->getNode('node');

        if ($this->isSafeFor($type, $expression, $env)) {
            return $node;
        }

        return new InlinePrint($this->getEscaperFilter($type, $expression), $node->getTemplateLine());
    }

    protected function escapePrintNode(PrintNode $node, Environment $env, $type)
    {
        if (false === $type) {
            return $node;
        }

        $expression = $node->getNode('expr');

        if ($this->isSafeFor($type, $expression, $env)) {
            return $node;
        }

        $class = \get_class($node);

        return new $class($this->getEscaperFilter($type, $expression), $node->getTemplateLine());
    }

    protected function preEscapeFilterNode(FilterExpression $filter, Environment $env)
    {
        $name = $filter->getNode('filter')->getAttribute('value');

        $type = $env->getFilter($name)->getPreEscape();
        if (null === $type) {
            return $filter;
        }

        $node = $filter->getNode('node');
        if ($this->isSafeFor($type, $node, $env)) {
            return $filter;
        }

        $filter->setNode('node', $this->getEscaperFilter($type, $node));

        return $filter;
    }

    protected function isSafeFor($type, \Twig_NodeInterface $expression, $env)
    {
        $safe = $this->safeAnalysis->getSafe($expression);

        if (null === $safe) {
            if (null === $this->traverser) {
                $this->traverser = new NodeTraverser($env, [$this->safeAnalysis]);
            }

            $this->safeAnalysis->setSafeVars($this->safeVars);

            $this->traverser->traverse($expression);
            $safe = $this->safeAnalysis->getSafe($expression);
        }

        return \in_array($type, $safe) || \in_array('all', $safe);
    }

    protected function needEscaping(Environment $env)
    {
        if (\count($this->statusStack)) {
            return $this->statusStack[\count($this->statusStack) - 1];
        }

        return $this->defaultStrategy ? $this->defaultStrategy : false;
    }

    protected function getEscaperFilter($type, \Twig_NodeInterface $node)
    {
        $line = $node->getTemplateLine();
        $name = new ConstantExpression('escape', $line);
        $args = new Node([new ConstantExpression((string) $type, $line), new ConstantExpression(null, $line), new ConstantExpression(true, $line)]);

        return new FilterExpression($node, $name, $args, $line);
    }

    public function getPriority()
    {
        return 0;
    }
}

class_alias('Twig\NodeVisitor\EscaperNodeVisitor', 'Twig_NodeVisitor_Escaper');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\NodeVisitor;

use Twig\Environment;
use Twig\Node\CheckSecurityNode;
use Twig\Node\CheckToStringNode;
use Twig\Node\Expression\Binary\ConcatBinary;
use Twig\Node\Expression\Binary\RangeBinary;
use Twig\Node\Expression\FilterExpression;
use Twig\Node\Expression\FunctionExpression;
use Twig\Node\Expression\GetAttrExpression;
use Twig\Node\Expression\NameExpression;
use Twig\Node\ModuleNode;
use Twig\Node\Node;
use Twig\Node\PrintNode;
use Twig\Node\SetNode;

/**
 * @final
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class SandboxNodeVisitor extends AbstractNodeVisitor
{
    protected $inAModule = false;
    protected $tags;
    protected $filters;
    protected $functions;

    private $needsToStringWrap = false;

    protected function doEnterNode(Node $node, Environment $env)
    {
        if ($node instanceof ModuleNode) {
            $this->inAModule = true;
            $this->tags = [];
            $this->filters = [];
            $this->functions = [];

            return $node;
        } elseif ($this->inAModule) {
            // look for tags
            if ($node->getNodeTag() && !isset($this->tags[$node->getNodeTag()])) {
                $this->tags[$node->getNodeTag()] = $node;
            }

            // look for filters
            if ($node instanceof FilterExpression && !isset($this->filters[$node->getNode('filter')->getAttribute('value')])) {
                $this->filters[$node->getNode('filter')->getAttribute('value')] = $node;
            }

            // look for functions
            if ($node instanceof FunctionExpression && !isset($this->functions[$node->getAttribute('name')])) {
                $this->functions[$node->getAttribute('name')] = $node;
            }

            // the .. operator is equivalent to the range() function
            if ($node instanceof RangeBinary && !isset($this->functions['range'])) {
                $this->functions['range'] = $node;
            }

            if ($node instanceof PrintNode) {
                $this->needsToStringWrap = true;
                $this->wrapNode($node, 'expr');
            }

            if ($node instanceof SetNode && !$node->getAttribute('capture')) {
                $this->needsToStringWrap = true;
            }

            // wrap outer nodes that can implicitly call __toString()
            if ($this->needsToStringWrap) {
                if ($node instanceof ConcatBinary) {
                    $this->wrapNode($node, 'left');
                    $this->wrapNode($node, 'right');
                }
                if ($node instanceof FilterExpression) {
                    $this->wrapNode($node, 'node');
                    $this->wrapArrayNode($node, 'arguments');
                }
                if ($node instanceof FunctionExpression) {
                    $this->wrapArrayNode($node, 'arguments');
                }
            }
        }

        return $node;
    }

    protected function doLeaveNode(Node $node, Environment $env)
    {
        if ($node instanceof ModuleNode) {
            $this->inAModule = false;

            $node->getNode('constructor_end')->setNode('_security_check', new Node([new CheckSecurityNode($this->filters, $this->tags, $this->functions), $node->getNode('display_start')]));
        } elseif ($this->inAModule) {
            if ($node instanceof PrintNode || $node instanceof SetNode) {
                $this->needsToStringWrap = false;
            }
        }

        return $node;
    }

    private function wrapNode(Node $node, $name)
    {
        $expr = $node->getNode($name);
        if ($expr instanceof NameExpression || $expr instanceof GetAttrExpression) {
            $node->setNode($name, new CheckToStringNode($expr));
        }
    }

    private function wrapArrayNode(Node $node, $name)
    {
        $args = $node->getNode($name);
        foreach ($args as $name => $_) {
            $this->wrapNode($args, $name);
        }
    }

    public function getPriority()
    {
        return 0;
    }
}

class_alias('Twig\NodeVisitor\SandboxNodeVisitor', 'Twig_NodeVisitor_Sandbox');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\NodeVisitor;

use Twig\Environment;
use Twig\Node\Node;

/**
 * Used to make node visitors compatible with Twig 1.x and 2.x.
 *
 * To be removed in Twig 3.1.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
abstract class AbstractNodeVisitor implements NodeVisitorInterface
{
    final public function enterNode(\Twig_NodeInterface $node, Environment $env)
    {
        if (!$node instanceof Node) {
            throw new \LogicException(sprintf('%s only supports \Twig\Node\Node instances.', __CLASS__));
        }

        return $this->doEnterNode($node, $env);
    }

    final public function leaveNode(\Twig_NodeInterface $node, Environment $env)
    {
        if (!$node instanceof Node) {
            throw new \LogicException(sprintf('%s only supports \Twig\Node\Node instances.', __CLASS__));
        }

        return $this->doLeaveNode($node, $env);
    }

    /**
     * Called before child nodes are visited.
     *
     * @return Node The modified node
     */
    abstract protected function doEnterNode(Node $node, Environment $env);

    /**
     * Called after child nodes are visited.
     *
     * @return Node|false|null The modified node or null if the node must be removed
     */
    abstract protected function doLeaveNode(Node $node, Environment $env);
}

class_alias('Twig\NodeVisitor\AbstractNodeVisitor', 'Twig_BaseNodeVisitor');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\NodeVisitor;

use Twig\Environment;

/**
 * Interface for node visitor classes.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
interface NodeVisitorInterface
{
    /**
     * Called before child nodes are visited.
     *
     * @return \Twig_NodeInterface The modified node
     */
    public function enterNode(\Twig_NodeInterface $node, Environment $env);

    /**
     * Called after child nodes are visited.
     *
     * @return \Twig_NodeInterface|false|null The modified node or null if the node must be removed
     */
    public function leaveNode(\Twig_NodeInterface $node, Environment $env);

    /**
     * Returns the priority for this visitor.
     *
     * Priority should be between -10 and 10 (0 is the default).
     *
     * @return int The priority level
     */
    public function getPriority();
}

class_alias('Twig\NodeVisitor\NodeVisitorInterface', 'Twig_NodeVisitorInterface');

// Ensure that the aliased name is loaded to keep BC for classes implementing the typehint with the old aliased name.
class_exists('Twig\Environment');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\NodeVisitor;

use Twig\Environment;
use Twig\Node\BlockReferenceNode;
use Twig\Node\BodyNode;
use Twig\Node\Expression\AbstractExpression;
use Twig\Node\Expression\BlockReferenceExpression;
use Twig\Node\Expression\ConstantExpression;
use Twig\Node\Expression\FilterExpression;
use Twig\Node\Expression\FunctionExpression;
use Twig\Node\Expression\GetAttrExpression;
use Twig\Node\Expression\NameExpression;
use Twig\Node\Expression\ParentExpression;
use Twig\Node\Expression\TempNameExpression;
use Twig\Node\ForNode;
use Twig\Node\IncludeNode;
use Twig\Node\Node;
use Twig\Node\PrintNode;
use Twig\Node\SetTempNode;

/**
 * Tries to optimize the AST.
 *
 * This visitor is always the last registered one.
 *
 * You can configure which optimizations you want to activate via the
 * optimizer mode.
 *
 * @final
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class OptimizerNodeVisitor extends AbstractNodeVisitor
{
    const OPTIMIZE_ALL = -1;
    const OPTIMIZE_NONE = 0;
    const OPTIMIZE_FOR = 2;
    const OPTIMIZE_RAW_FILTER = 4;
    const OPTIMIZE_VAR_ACCESS = 8;

    protected $loops = [];
    protected $loopsTargets = [];
    protected $optimizers;
    protected $prependedNodes = [];
    protected $inABody = false;

    /**
     * @param int $optimizers The optimizer mode
     */
    public function __construct($optimizers = -1)
    {
        if (!\is_int($optimizers) || $optimizers > (self::OPTIMIZE_FOR | self::OPTIMIZE_RAW_FILTER | self::OPTIMIZE_VAR_ACCESS)) {
            throw new \InvalidArgumentException(sprintf('Optimizer mode "%s" is not valid.', $optimizers));
        }

        $this->optimizers = $optimizers;
    }

    protected function doEnterNode(Node $node, Environment $env)
    {
        if (self::OPTIMIZE_FOR === (self::OPTIMIZE_FOR & $this->optimizers)) {
            $this->enterOptimizeFor($node, $env);
        }

        if (\PHP_VERSION_ID < 50400 && self::OPTIMIZE_VAR_ACCESS === (self::OPTIMIZE_VAR_ACCESS & $this->optimizers) && !$env->isStrictVariables() && !$env->hasExtension('\Twig\Extension\SandboxExtension')) {
            if ($this->inABody) {
                if (!$node instanceof AbstractExpression) {
                    if ('Twig_Node' !== \get_class($node)) {
                        array_unshift($this->prependedNodes, []);
                    }
                } else {
                    $node = $this->optimizeVariables($node, $env);
                }
            } elseif ($node instanceof BodyNode) {
                $this->inABody = true;
            }
        }

        return $node;
    }

    protected function doLeaveNode(Node $node, Environment $env)
    {
        $expression = $node instanceof AbstractExpression;

        if (self::OPTIMIZE_FOR === (self::OPTIMIZE_FOR & $this->optimizers)) {
            $this->leaveOptimizeFor($node, $env);
        }

        if (self::OPTIMIZE_RAW_FILTER === (self::OPTIMIZE_RAW_FILTER & $this->optimizers)) {
            $node = $this->optimizeRawFilter($node, $env);
        }

        $node = $this->optimizePrintNode($node, $env);

        if (self::OPTIMIZE_VAR_ACCESS === (self::OPTIMIZE_VAR_ACCESS & $this->optimizers) && !$env->isStrictVariables() && !$env->hasExtension('\Twig\Extension\SandboxExtension')) {
            if ($node instanceof BodyNode) {
                $this->inABody = false;
            } elseif ($this->inABody) {
                if (!$expression && 'Twig_Node' !== \get_class($node) && $prependedNodes = array_shift($this->prependedNodes)) {
                    $nodes = [];
                    foreach (array_unique($prependedNodes) as $name) {
                        $nodes[] = new SetTempNode($name, $node->getTemplateLine());
                    }

                    $nodes[] = $node;
                    $node = new Node($nodes);
                }
            }
        }

        return $node;
    }

    protected function optimizeVariables(\Twig_NodeInterface $node, Environment $env)
    {
        if ('Twig_Node_Expression_Name' === \get_class($node) && $node->isSimple()) {
            $this->prependedNodes[0][] = $node->getAttribute('name');

            return new TempNameExpression($node->getAttribute('name'), $node->getTemplateLine());
        }

        return $node;
    }

    /**
     * Optimizes print nodes.
     *
     * It replaces:
     *
     *   * "echo $this->render(Parent)Block()" with "$this->display(Parent)Block()"
     *
     * @return \Twig_NodeInterface
     */
    protected function optimizePrintNode(\Twig_NodeInterface $node, Environment $env)
    {
        if (!$node instanceof PrintNode) {
            return $node;
        }

        $exprNode = $node->getNode('expr');
        if (
            $exprNode instanceof BlockReferenceExpression ||
            $exprNode instanceof ParentExpression
        ) {
            $exprNode->setAttribute('output', true);

            return $exprNode;
        }

        return $node;
    }

    /**
     * Removes "raw" filters.
     *
     * @return \Twig_NodeInterface
     */
    protected function optimizeRawFilter(\Twig_NodeInterface $node, Environment $env)
    {
        if ($node instanceof FilterExpression && 'raw' == $node->getNode('filter')->getAttribute('value')) {
            return $node->getNode('node');
        }

        return $node;
    }

    /**
     * Optimizes "for" tag by removing the "loop" variable creation whenever possible.
     */
    protected function enterOptimizeFor(\Twig_NodeInterface $node, Environment $env)
    {
        if ($node instanceof ForNode) {
            // disable the loop variable by default
            $node->setAttribute('with_loop', false);
            array_unshift($this->loops, $node);
            array_unshift($this->loopsTargets, $node->getNode('value_target')->getAttribute('name'));
            array_unshift($this->loopsTargets, $node->getNode('key_target')->getAttribute('name'));
        } elseif (!$this->loops) {
            // we are outside a loop
            return;
        }

        // when do we need to add the loop variable back?

        // the loop variable is referenced for the current loop
        elseif ($node instanceof NameExpression && 'loop' === $node->getAttribute('name')) {
            $node->setAttribute('always_defined', true);
            $this->addLoopToCurrent();
        }

        // optimize access to loop targets
        elseif ($node instanceof NameExpression && \in_array($node->getAttribute('name'), $this->loopsTargets)) {
            $node->setAttribute('always_defined', true);
        }

        // block reference
        elseif ($node instanceof BlockReferenceNode || $node instanceof BlockReferenceExpression) {
            $this->addLoopToCurrent();
        }

        // include without the only attribute
        elseif ($node instanceof IncludeNode && !$node->getAttribute('only')) {
            $this->addLoopToAll();
        }

        // include function without the with_context=false parameter
        elseif ($node instanceof FunctionExpression
            && 'include' === $node->getAttribute('name')
            && (!$node->getNode('arguments')->hasNode('with_context')
                 || false !== $node->getNode('arguments')->getNode('with_context')->getAttribute('value')
               )
        ) {
            $this->addLoopToAll();
        }

        // the loop variable is referenced via an attribute
        elseif ($node instanceof GetAttrExpression
            && (!$node->getNode('attribute') instanceof ConstantExpression
                || 'parent' === $node->getNode('attribute')->getAttribute('value')
               )
            && (true === $this->loops[0]->getAttribute('with_loop')
                || ($node->getNode('node') instanceof NameExpression
                    && 'loop' === $node->getNode('node')->getAttribute('name')
                   )
               )
        ) {
            $this->addLoopToAll();
        }
    }

    /**
     * Optimizes "for" tag by removing the "loop" variable creation whenever possible.
     */
    protected function leaveOptimizeFor(\Twig_NodeInterface $node, Environment $env)
    {
        if ($node instanceof ForNode) {
            array_shift($this->loops);
            array_shift($this->loopsTargets);
            array_shift($this->loopsTargets);
        }
    }

    protected function addLoopToCurrent()
    {
        $this->loops[0]->setAttribute('with_loop', true);
    }

    protected function addLoopToAll()
    {
        foreach ($this->loops as $loop) {
            $loop->setAttribute('with_loop', true);
        }
    }

    public function getPriority()
    {
        return 255;
    }
}

class_alias('Twig\NodeVisitor\OptimizerNodeVisitor', 'Twig_NodeVisitor_Optimizer');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\NodeVisitor;

use Twig\Environment;
use Twig\Node\Expression\BlockReferenceExpression;
use Twig\Node\Expression\ConditionalExpression;
use Twig\Node\Expression\ConstantExpression;
use Twig\Node\Expression\FilterExpression;
use Twig\Node\Expression\FunctionExpression;
use Twig\Node\Expression\GetAttrExpression;
use Twig\Node\Expression\MethodCallExpression;
use Twig\Node\Expression\NameExpression;
use Twig\Node\Expression\ParentExpression;
use Twig\Node\Node;

/**
 * @final
 */
class SafeAnalysisNodeVisitor extends AbstractNodeVisitor
{
    protected $data = [];
    protected $safeVars = [];

    public function setSafeVars($safeVars)
    {
        $this->safeVars = $safeVars;
    }

    public function getSafe(\Twig_NodeInterface $node)
    {
        $hash = spl_object_hash($node);
        if (!isset($this->data[$hash])) {
            return;
        }

        foreach ($this->data[$hash] as $bucket) {
            if ($bucket['key'] !== $node) {
                continue;
            }

            if (\in_array('html_attr', $bucket['value'])) {
                $bucket['value'][] = 'html';
            }

            return $bucket['value'];
        }
    }

    protected function setSafe(\Twig_NodeInterface $node, array $safe)
    {
        $hash = spl_object_hash($node);
        if (isset($this->data[$hash])) {
            foreach ($this->data[$hash] as &$bucket) {
                if ($bucket['key'] === $node) {
                    $bucket['value'] = $safe;

                    return;
                }
            }
        }
        $this->data[$hash][] = [
            'key' => $node,
            'value' => $safe,
        ];
    }

    protected function doEnterNode(Node $node, Environment $env)
    {
        return $node;
    }

    protected function doLeaveNode(Node $node, Environment $env)
    {
        if ($node instanceof ConstantExpression) {
            // constants are marked safe for all
            $this->setSafe($node, ['all']);
        } elseif ($node instanceof BlockReferenceExpression) {
            // blocks are safe by definition
            $this->setSafe($node, ['all']);
        } elseif ($node instanceof ParentExpression) {
            // parent block is safe by definition
            $this->setSafe($node, ['all']);
        } elseif ($node instanceof ConditionalExpression) {
            // intersect safeness of both operands
            $safe = $this->intersectSafe($this->getSafe($node->getNode('expr2')), $this->getSafe($node->getNode('expr3')));
            $this->setSafe($node, $safe);
        } elseif ($node instanceof FilterExpression) {
            // filter expression is safe when the filter is safe
            $name = $node->getNode('filter')->getAttribute('value');
            $args = $node->getNode('arguments');
            if (false !== $filter = $env->getFilter($name)) {
                $safe = $filter->getSafe($args);
                if (null === $safe) {
                    $safe = $this->intersectSafe($this->getSafe($node->getNode('node')), $filter->getPreservesSafety());
                }
                $this->setSafe($node, $safe);
            } else {
                $this->setSafe($node, []);
            }
        } elseif ($node instanceof FunctionExpression) {
            // function expression is safe when the function is safe
            $name = $node->getAttribute('name');
            $args = $node->getNode('arguments');
            $function = $env->getFunction($name);
            if (false !== $function) {
                $this->setSafe($node, $function->getSafe($args));
            } else {
                $this->setSafe($node, []);
            }
        } elseif ($node instanceof MethodCallExpression) {
            if ($node->getAttribute('safe')) {
                $this->setSafe($node, ['all']);
            } else {
                $this->setSafe($node, []);
            }
        } elseif ($node instanceof GetAttrExpression && $node->getNode('node') instanceof NameExpression) {
            $name = $node->getNode('node')->getAttribute('name');
            // attributes on template instances are safe
            if ('_self' == $name || \in_array($name, $this->safeVars)) {
                $this->setSafe($node, ['all']);
            } else {
                $this->setSafe($node, []);
            }
        } else {
            $this->setSafe($node, []);
        }

        return $node;
    }

    protected function intersectSafe(array $a = null, array $b = null)
    {
        if (null === $a || null === $b) {
            return [];
        }

        if (\in_array('all', $a)) {
            return $b;
        }

        if (\in_array('all', $b)) {
            return $a;
        }

        return array_intersect($a, $b);
    }

    public function getPriority()
    {
        return 0;
    }
}

class_alias('Twig\NodeVisitor\SafeAnalysisNodeVisitor', 'Twig_NodeVisitor_SafeAnalysis');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig;

use Twig\Error\SyntaxError;
use Twig\Node\BlockNode;
use Twig\Node\BlockReferenceNode;
use Twig\Node\BodyNode;
use Twig\Node\Expression\AbstractExpression;
use Twig\Node\MacroNode;
use Twig\Node\ModuleNode;
use Twig\Node\Node;
use Twig\Node\NodeCaptureInterface;
use Twig\Node\NodeOutputInterface;
use Twig\Node\PrintNode;
use Twig\Node\TextNode;
use Twig\NodeVisitor\NodeVisitorInterface;
use Twig\TokenParser\TokenParserInterface;

/**
 * Default parser implementation.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class Parser implements \Twig_ParserInterface
{
    protected $stack = [];
    protected $stream;
    protected $parent;
    protected $handlers;
    protected $visitors;
    protected $expressionParser;
    protected $blocks;
    protected $blockStack;
    protected $macros;
    protected $env;
    protected $reservedMacroNames;
    protected $importedSymbols;
    protected $traits;
    protected $embeddedTemplates = [];
    private $varNameSalt = 0;

    public function __construct(Environment $env)
    {
        $this->env = $env;
    }

    /**
     * @deprecated since 1.27 (to be removed in 2.0)
     */
    public function getEnvironment()
    {
        @trigger_error('The '.__METHOD__.' method is deprecated since version 1.27 and will be removed in 2.0.', E_USER_DEPRECATED);

        return $this->env;
    }

    public function getVarName()
    {
        return sprintf('__internal_%s', hash('sha256', __METHOD__.$this->stream->getSourceContext()->getCode().$this->varNameSalt++));
    }

    /**
     * @deprecated since 1.27 (to be removed in 2.0). Use $parser->getStream()->getSourceContext()->getPath() instead.
     */
    public function getFilename()
    {
        @trigger_error(sprintf('The "%s" method is deprecated since version 1.27 and will be removed in 2.0. Use $parser->getStream()->getSourceContext()->getPath() instead.', __METHOD__), E_USER_DEPRECATED);

        return $this->stream->getSourceContext()->getName();
    }

    public function parse(TokenStream $stream, $test = null, $dropNeedle = false)
    {
        // push all variables into the stack to keep the current state of the parser
        // using get_object_vars() instead of foreach would lead to https://bugs.php.net/71336
        // This hack can be removed when min version if PHP 7.0
        $vars = [];
        foreach ($this as $k => $v) {
            $vars[$k] = $v;
        }

        unset($vars['stack'], $vars['env'], $vars['handlers'], $vars['visitors'], $vars['expressionParser'], $vars['reservedMacroNames']);
        $this->stack[] = $vars;

        // tag handlers
        if (null === $this->handlers) {
            $this->handlers = $this->env->getTokenParsers();
            $this->handlers->setParser($this);
        }

        // node visitors
        if (null === $this->visitors) {
            $this->visitors = $this->env->getNodeVisitors();
        }

        if (null === $this->expressionParser) {
            $this->expressionParser = new ExpressionParser($this, $this->env);
        }

        $this->stream = $stream;
        $this->parent = null;
        $this->blocks = [];
        $this->macros = [];
        $this->traits = [];
        $this->blockStack = [];
        $this->importedSymbols = [[]];
        $this->embeddedTemplates = [];
        $this->varNameSalt = 0;

        try {
            $body = $this->subparse($test, $dropNeedle);

            if (null !== $this->parent && null === $body = $this->filterBodyNodes($body)) {
                $body = new Node();
            }
        } catch (SyntaxError $e) {
            if (!$e->getSourceContext()) {
                $e->setSourceContext($this->stream->getSourceContext());
            }

            if (!$e->getTemplateLine()) {
                $e->setTemplateLine($this->stream->getCurrent()->getLine());
            }

            throw $e;
        }

        $node = new ModuleNode(new BodyNode([$body]), $this->parent, new Node($this->blocks), new Node($this->macros), new Node($this->traits), $this->embeddedTemplates, $stream->getSourceContext());

        $traverser = new NodeTraverser($this->env, $this->visitors);

        $node = $traverser->traverse($node);

        // restore previous stack so previous parse() call can resume working
        foreach (array_pop($this->stack) as $key => $val) {
            $this->$key = $val;
        }

        return $node;
    }

    public function subparse($test, $dropNeedle = false)
    {
        $lineno = $this->getCurrentToken()->getLine();
        $rv = [];
        while (!$this->stream->isEOF()) {
            switch ($this->getCurrentToken()->getType()) {
                case Token::TEXT_TYPE:
                    $token = $this->stream->next();
                    $rv[] = new TextNode($token->getValue(), $token->getLine());
                    break;

                case Token::VAR_START_TYPE:
                    $token = $this->stream->next();
                    $expr = $this->expressionParser->parseExpression();
                    $this->stream->expect(Token::VAR_END_TYPE);
                    $rv[] = new PrintNode($expr, $token->getLine());
                    break;

                case Token::BLOCK_START_TYPE:
                    $this->stream->next();
                    $token = $this->getCurrentToken();

                    if (Token::NAME_TYPE !== $token->getType()) {
                        throw new SyntaxError('A block must start with a tag name.', $token->getLine(), $this->stream->getSourceContext());
                    }

                    if (null !== $test && \call_user_func($test, $token)) {
                        if ($dropNeedle) {
                            $this->stream->next();
                        }

                        if (1 === \count($rv)) {
                            return $rv[0];
                        }

                        return new Node($rv, [], $lineno);
                    }

                    $subparser = $this->handlers->getTokenParser($token->getValue());
                    if (null === $subparser) {
                        if (null !== $test) {
                            $e = new SyntaxError(sprintf('Unexpected "%s" tag', $token->getValue()), $token->getLine(), $this->stream->getSourceContext());

                            if (\is_array($test) && isset($test[0]) && $test[0] instanceof TokenParserInterface) {
                                $e->appendMessage(sprintf(' (expecting closing tag for the "%s" tag defined near line %s).', $test[0]->getTag(), $lineno));
                            }
                        } else {
                            $e = new SyntaxError(sprintf('Unknown "%s" tag.', $token->getValue()), $token->getLine(), $this->stream->getSourceContext());
                            $e->addSuggestions($token->getValue(), array_keys($this->env->getTags()));
                        }

                        throw $e;
                    }

                    $this->stream->next();

                    $node = $subparser->parse($token);
                    if (null !== $node) {
                        $rv[] = $node;
                    }
                    break;

                default:
                    throw new SyntaxError('Lexer or parser ended up in unsupported state.', $this->getCurrentToken()->getLine(), $this->stream->getSourceContext());
            }
        }

        if (1 === \count($rv)) {
            return $rv[0];
        }

        return new Node($rv, [], $lineno);
    }

    /**
     * @deprecated since 1.27 (to be removed in 2.0)
     */
    public function addHandler($name, $class)
    {
        @trigger_error('The '.__METHOD__.' method is deprecated since version 1.27 and will be removed in 2.0.', E_USER_DEPRECATED);

        $this->handlers[$name] = $class;
    }

    /**
     * @deprecated since 1.27 (to be removed in 2.0)
     */
    public function addNodeVisitor(NodeVisitorInterface $visitor)
    {
        @trigger_error('The '.__METHOD__.' method is deprecated since version 1.27 and will be removed in 2.0.', E_USER_DEPRECATED);

        $this->visitors[] = $visitor;
    }

    public function getBlockStack()
    {
        return $this->blockStack;
    }

    public function peekBlockStack()
    {
        return isset($this->blockStack[\count($this->blockStack) - 1]) ? $this->blockStack[\count($this->blockStack) - 1] : null;
    }

    public function popBlockStack()
    {
        array_pop($this->blockStack);
    }

    public function pushBlockStack($name)
    {
        $this->blockStack[] = $name;
    }

    public function hasBlock($name)
    {
        return isset($this->blocks[$name]);
    }

    public function getBlock($name)
    {
        return $this->blocks[$name];
    }

    public function setBlock($name, BlockNode $value)
    {
        $this->blocks[$name] = new BodyNode([$value], [], $value->getTemplateLine());
    }

    public function hasMacro($name)
    {
        return isset($this->macros[$name]);
    }

    public function setMacro($name, MacroNode $node)
    {
        if ($this->isReservedMacroName($name)) {
            throw new SyntaxError(sprintf('"%s" cannot be used as a macro name as it is a reserved keyword.', $name), $node->getTemplateLine(), $this->stream->getSourceContext());
        }

        $this->macros[$name] = $node;
    }

    public function isReservedMacroName($name)
    {
        if (null === $this->reservedMacroNames) {
            $this->reservedMacroNames = [];
            $r = new \ReflectionClass($this->env->getBaseTemplateClass());
            foreach ($r->getMethods() as $method) {
                $methodName = strtolower($method->getName());

                if ('get' === substr($methodName, 0, 3) && isset($methodName[3])) {
                    $this->reservedMacroNames[] = substr($methodName, 3);
                }
            }
        }

        return \in_array(strtolower($name), $this->reservedMacroNames);
    }

    public function addTrait($trait)
    {
        $this->traits[] = $trait;
    }

    public function hasTraits()
    {
        return \count($this->traits) > 0;
    }

    public function embedTemplate(ModuleNode $template)
    {
        $template->setIndex(mt_rand());

        $this->embeddedTemplates[] = $template;
    }

    public function addImportedSymbol($type, $alias, $name = null, AbstractExpression $node = null)
    {
        $this->importedSymbols[0][$type][$alias] = ['name' => $name, 'node' => $node];
    }

    public function getImportedSymbol($type, $alias)
    {
        if (null !== $this->peekBlockStack()) {
            foreach ($this->importedSymbols as $functions) {
                if (isset($functions[$type][$alias])) {
                    if (\count($this->blockStack) > 1) {
                        return null;
                    }

                    return $functions[$type][$alias];
                }
            }
        } else {
            return isset($this->importedSymbols[0][$type][$alias]) ? $this->importedSymbols[0][$type][$alias] : null;
        }
    }

    public function isMainScope()
    {
        return 1 === \count($this->importedSymbols);
    }

    public function pushLocalScope()
    {
        array_unshift($this->importedSymbols, []);
    }

    public function popLocalScope()
    {
        array_shift($this->importedSymbols);
    }

    /**
     * @return ExpressionParser
     */
    public function getExpressionParser()
    {
        return $this->expressionParser;
    }

    public function getParent()
    {
        return $this->parent;
    }

    public function setParent($parent)
    {
        $this->parent = $parent;
    }

    /**
     * @return TokenStream
     */
    public function getStream()
    {
        return $this->stream;
    }

    /**
     * @return Token
     */
    public function getCurrentToken()
    {
        return $this->stream->getCurrent();
    }

    protected function filterBodyNodes(\Twig_NodeInterface $node)
    {
        // check that the body does not contain non-empty output nodes
        if (
            ($node instanceof TextNode && !ctype_space($node->getAttribute('data')))
            ||
            (!$node instanceof TextNode && !$node instanceof BlockReferenceNode && $node instanceof NodeOutputInterface)
        ) {
            if (false !== strpos((string) $node, \chr(0xEF).\chr(0xBB).\chr(0xBF))) {
                $t = substr($node->getAttribute('data'), 3);
                if ('' === $t || ctype_space($t)) {
                    // bypass empty nodes starting with a BOM
                    return;
                }
            }

            throw new SyntaxError('A template that extends another one cannot include content outside Twig blocks. Did you forget to put the content inside a {% block %} tag?', $node->getTemplateLine(), $this->stream->getSourceContext());
        }

        // bypass nodes that will "capture" the output
        if ($node instanceof NodeCaptureInterface) {
            return $node;
        }

        if ($node instanceof NodeOutputInterface) {
            return;
        }

        foreach ($node as $k => $n) {
            if (null !== $n && null === $this->filterBodyNodes($n)) {
                $node->removeNode($k);
            }
        }

        return $node;
    }
}

class_alias('Twig\Parser', 'Twig_Parser');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Test;

use PHPUnit\Framework\TestCase;
use Twig\Compiler;
use Twig\Environment;
use Twig\Loader\ArrayLoader;
use Twig\Node\Node;

abstract class NodeTestCase extends TestCase
{
    abstract public function getTests();

    /**
     * @dataProvider getTests
     */
    public function testCompile($node, $source, $environment = null, $isPattern = false)
    {
        $this->assertNodeCompilation($source, $node, $environment, $isPattern);
    }

    public function assertNodeCompilation($source, Node $node, Environment $environment = null, $isPattern = false)
    {
        $compiler = $this->getCompiler($environment);
        $compiler->compile($node);

        if ($isPattern) {
            $this->assertStringMatchesFormat($source, trim($compiler->getSource()));
        } else {
            $this->assertEquals($source, trim($compiler->getSource()));
        }
    }

    protected function getCompiler(Environment $environment = null)
    {
        return new Compiler(null === $environment ? $this->getEnvironment() : $environment);
    }

    protected function getEnvironment()
    {
        return new Environment(new ArrayLoader([]));
    }

    protected function getVariableGetter($name, $line = false)
    {
        $line = $line > 0 ? "// line {$line}\n" : '';

        if (\PHP_VERSION_ID >= 70000) {
            return sprintf('%s($context["%s"] ?? null)', $line, $name);
        }

        if (\PHP_VERSION_ID >= 50400) {
            return sprintf('%s(isset($context["%s"]) ? $context["%s"] : null)', $line, $name, $name);
        }

        return sprintf('%s$this->getContext($context, "%s")', $line, $name);
    }

    protected function getAttributeGetter()
    {
        if (\function_exists('twig_template_get_attributes')) {
            return 'twig_template_get_attributes($this, ';
        }

        return '$this->getAttribute(';
    }
}

class_alias('Twig\Test\NodeTestCase', 'Twig_Test_NodeTestCase');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Test;

use PHPUnit\Framework\TestCase;
use Twig\Environment;
use Twig\Error\Error;
use Twig\Extension\ExtensionInterface;
use Twig\Loader\ArrayLoader;
use Twig\Loader\SourceContextLoaderInterface;
use Twig\RuntimeLoader\RuntimeLoaderInterface;
use Twig\Source;
use Twig\TwigFilter;
use Twig\TwigFunction;
use Twig\TwigTest;

/**
 * Integration test helper.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Karma Dordrak <drak@zikula.org>
 */
abstract class IntegrationTestCase extends TestCase
{
    /**
     * @return string
     */
    abstract protected function getFixturesDir();

    /**
     * @return RuntimeLoaderInterface[]
     */
    protected function getRuntimeLoaders()
    {
        return [];
    }

    /**
     * @return ExtensionInterface[]
     */
    protected function getExtensions()
    {
        return [];
    }

    /**
     * @return TwigFilter[]
     */
    protected function getTwigFilters()
    {
        return [];
    }

    /**
     * @return TwigFunction[]
     */
    protected function getTwigFunctions()
    {
        return [];
    }

    /**
     * @return TwigTest[]
     */
    protected function getTwigTests()
    {
        return [];
    }

    /**
     * @dataProvider getTests
     */
    public function testIntegration($file, $message, $condition, $templates, $exception, $outputs)
    {
        $this->doIntegrationTest($file, $message, $condition, $templates, $exception, $outputs);
    }

    /**
     * @dataProvider getLegacyTests
     * @group legacy
     */
    public function testLegacyIntegration($file, $message, $condition, $templates, $exception, $outputs)
    {
        $this->doIntegrationTest($file, $message, $condition, $templates, $exception, $outputs);
    }

    public function getTests($name, $legacyTests = false)
    {
        $fixturesDir = realpath($this->getFixturesDir());
        $tests = [];

        foreach (new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($fixturesDir), \RecursiveIteratorIterator::LEAVES_ONLY) as $file) {
            if (!preg_match('/\.test$/', $file)) {
                continue;
            }

            if ($legacyTests xor false !== strpos($file->getRealpath(), '.legacy.test')) {
                continue;
            }

            $test = file_get_contents($file->getRealpath());

            if (preg_match('/--TEST--\s*(.*?)\s*(?:--CONDITION--\s*(.*))?\s*((?:--TEMPLATE(?:\(.*?\))?--(?:.*?))+)\s*(?:--DATA--\s*(.*))?\s*--EXCEPTION--\s*(.*)/sx', $test, $match)) {
                $message = $match[1];
                $condition = $match[2];
                $templates = self::parseTemplates($match[3]);
                $exception = $match[5];
                $outputs = [[null, $match[4], null, '']];
            } elseif (preg_match('/--TEST--\s*(.*?)\s*(?:--CONDITION--\s*(.*))?\s*((?:--TEMPLATE(?:\(.*?\))?--(?:.*?))+)--DATA--.*?--EXPECT--.*/s', $test, $match)) {
                $message = $match[1];
                $condition = $match[2];
                $templates = self::parseTemplates($match[3]);
                $exception = false;
                preg_match_all('/--DATA--(.*?)(?:--CONFIG--(.*?))?--EXPECT--(.*?)(?=\-\-DATA\-\-|$)/s', $test, $outputs, PREG_SET_ORDER);
            } else {
                throw new \InvalidArgumentException(sprintf('Test "%s" is not valid.', str_replace($fixturesDir.'/', '', $file)));
            }

            $tests[] = [str_replace($fixturesDir.'/', '', $file), $message, $condition, $templates, $exception, $outputs];
        }

        if ($legacyTests && empty($tests)) {
            // add a dummy test to avoid a PHPUnit message
            return [['not', '-', '', [], '', []]];
        }

        return $tests;
    }

    public function getLegacyTests()
    {
        return $this->getTests('testLegacyIntegration', true);
    }

    protected function doIntegrationTest($file, $message, $condition, $templates, $exception, $outputs)
    {
        if (!$outputs) {
            $this->markTestSkipped('no tests to run');
        }

        if ($condition) {
            eval('$ret = '.$condition.';');
            if (!$ret) {
                $this->markTestSkipped($condition);
            }
        }

        $loader = new ArrayLoader($templates);

        foreach ($outputs as $i => $match) {
            $config = array_merge([
                'cache' => false,
                'strict_variables' => true,
            ], $match[2] ? eval($match[2].';') : []);
            $twig = new Environment($loader, $config);
            $twig->addGlobal('global', 'global');
            foreach ($this->getRuntimeLoaders() as $runtimeLoader) {
                $twig->addRuntimeLoader($runtimeLoader);
            }

            foreach ($this->getExtensions() as $extension) {
                $twig->addExtension($extension);
            }

            foreach ($this->getTwigFilters() as $filter) {
                $twig->addFilter($filter);
            }

            foreach ($this->getTwigTests() as $test) {
                $twig->addTest($test);
            }

            foreach ($this->getTwigFunctions() as $function) {
                $twig->addFunction($function);
            }

            $p = new \ReflectionProperty($twig, 'templateClassPrefix');
            $p->setAccessible(true);
            $p->setValue($twig, '__TwigTemplate_'.hash('sha256', uniqid(mt_rand(), true), false).'_');

            try {
                $template = $twig->load('index.twig');
            } catch (\Exception $e) {
                if (false !== $exception) {
                    $message = $e->getMessage();
                    $this->assertSame(trim($exception), trim(sprintf('%s: %s', \get_class($e), $message)));
                    $last = substr($message, \strlen($message) - 1);
                    $this->assertTrue('.' === $last || '?' === $last, 'Exception message must end with a dot or a question mark.');

                    return;
                }

                throw new Error(sprintf('%s: %s', \get_class($e), $e->getMessage()), -1, null, $e);
            }

            try {
                $output = trim($template->render(eval($match[1].';')), "\n ");
            } catch (\Exception $e) {
                if (false !== $exception) {
                    $this->assertSame(trim($exception), trim(sprintf('%s: %s', \get_class($e), $e->getMessage())));

                    return;
                }

                $e = new Error(sprintf('%s: %s', \get_class($e), $e->getMessage()), -1, null, $e);

                $output = trim(sprintf('%s: %s', \get_class($e), $e->getMessage()));
            }

            if (false !== $exception) {
                list($class) = explode(':', $exception);
                $constraintClass = class_exists('PHPUnit\Framework\Constraint\Exception') ? 'PHPUnit\Framework\Constraint\Exception' : 'PHPUnit_Framework_Constraint_Exception';
                $this->assertThat(null, new $constraintClass($class));
            }

            $expected = trim($match[3], "\n ");

            if ($expected !== $output) {
                printf("Compiled templates that failed on case %d:\n", $i + 1);

                foreach (array_keys($templates) as $name) {
                    echo "Template: $name\n";
                    $loader = $twig->getLoader();
                    if (!$loader instanceof SourceContextLoaderInterface) {
                        $source = new Source($loader->getSource($name), $name);
                    } else {
                        $source = $loader->getSourceContext($name);
                    }
                    echo $twig->compile($twig->parse($twig->tokenize($source)));
                }
            }
            $this->assertEquals($expected, $output, $message.' (in '.$file.')');
        }
    }

    protected static function parseTemplates($test)
    {
        $templates = [];
        preg_match_all('/--TEMPLATE(?:\((.*?)\))?--(.*?)(?=\-\-TEMPLATE|$)/s', $test, $matches, PREG_SET_ORDER);
        foreach ($matches as $match) {
            $templates[($match[1] ? $match[1] : 'index.twig')] = $match[2];
        }

        return $templates;
    }
}

class_alias('Twig\Test\IntegrationTestCase', 'Twig_Test_IntegrationTestCase');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Util;

use Twig\Environment;
use Twig\Error\SyntaxError;
use Twig\Source;

/**
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @final
 */
class DeprecationCollector
{
    private $twig;
    private $deprecations;

    public function __construct(Environment $twig)
    {
        $this->twig = $twig;
    }

    /**
     * Returns deprecations for templates contained in a directory.
     *
     * @param string $dir A directory where templates are stored
     * @param string $ext Limit the loaded templates by extension
     *
     * @return array An array of deprecations
     */
    public function collectDir($dir, $ext = '.twig')
    {
        $iterator = new \RegexIterator(
            new \RecursiveIteratorIterator(
                new \RecursiveDirectoryIterator($dir), \RecursiveIteratorIterator::LEAVES_ONLY
            ), '{'.preg_quote($ext).'$}'
        );

        return $this->collect(new TemplateDirIterator($iterator));
    }

    /**
     * Returns deprecations for passed templates.
     *
     * @param \Traversable $iterator An iterator of templates (where keys are template names and values the contents of the template)
     *
     * @return array An array of deprecations
     */
    public function collect(\Traversable $iterator)
    {
        $this->deprecations = [];

        set_error_handler([$this, 'errorHandler']);

        foreach ($iterator as $name => $contents) {
            try {
                $this->twig->parse($this->twig->tokenize(new Source($contents, $name)));
            } catch (SyntaxError $e) {
                // ignore templates containing syntax errors
            }
        }

        restore_error_handler();

        $deprecations = $this->deprecations;
        $this->deprecations = [];

        return $deprecations;
    }

    /**
     * @internal
     */
    public function errorHandler($type, $msg)
    {
        if (E_USER_DEPRECATED === $type) {
            $this->deprecations[] = $msg;
        }
    }
}

class_alias('Twig\Util\DeprecationCollector', 'Twig_Util_DeprecationCollector');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Util;

/**
 * @author Fabien Potencier <fabien@symfony.com>
 */
class TemplateDirIterator extends \IteratorIterator
{
    public function current()
    {
        return file_get_contents(parent::current());
    }

    public function key()
    {
        return (string) parent::key();
    }
}

class_alias('Twig\Util\TemplateDirIterator', 'Twig_Util_TemplateDirIterator');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig;

use Twig\Error\SyntaxError;
use Twig\Node\Expression\ArrayExpression;
use Twig\Node\Expression\ArrowFunctionExpression;
use Twig\Node\Expression\AssignNameExpression;
use Twig\Node\Expression\Binary\ConcatBinary;
use Twig\Node\Expression\BlockReferenceExpression;
use Twig\Node\Expression\ConditionalExpression;
use Twig\Node\Expression\ConstantExpression;
use Twig\Node\Expression\GetAttrExpression;
use Twig\Node\Expression\MethodCallExpression;
use Twig\Node\Expression\NameExpression;
use Twig\Node\Expression\ParentExpression;
use Twig\Node\Expression\Unary\NegUnary;
use Twig\Node\Expression\Unary\NotUnary;
use Twig\Node\Expression\Unary\PosUnary;
use Twig\Node\Node;

/**
 * Parses expressions.
 *
 * This parser implements a "Precedence climbing" algorithm.
 *
 * @see https://www.engr.mun.ca/~theo/Misc/exp_parsing.htm
 * @see https://en.wikipedia.org/wiki/Operator-precedence_parser
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @internal
 */
class ExpressionParser
{
    const OPERATOR_LEFT = 1;
    const OPERATOR_RIGHT = 2;

    protected $parser;
    protected $unaryOperators;
    protected $binaryOperators;

    private $env;

    public function __construct(Parser $parser, $env = null)
    {
        $this->parser = $parser;

        if ($env instanceof Environment) {
            $this->env = $env;
            $this->unaryOperators = $env->getUnaryOperators();
            $this->binaryOperators = $env->getBinaryOperators();
        } else {
            @trigger_error('Passing the operators as constructor arguments to '.__METHOD__.' is deprecated since version 1.27. Pass the environment instead.', E_USER_DEPRECATED);

            $this->env = $parser->getEnvironment();
            $this->unaryOperators = func_get_arg(1);
            $this->binaryOperators = func_get_arg(2);
        }
    }

    public function parseExpression($precedence = 0, $allowArrow = false)
    {
        if ($allowArrow && $arrow = $this->parseArrow()) {
            return $arrow;
        }

        $expr = $this->getPrimary();
        $token = $this->parser->getCurrentToken();
        while ($this->isBinary($token) && $this->binaryOperators[$token->getValue()]['precedence'] >= $precedence) {
            $op = $this->binaryOperators[$token->getValue()];
            $this->parser->getStream()->next();

            if ('is not' === $token->getValue()) {
                $expr = $this->parseNotTestExpression($expr);
            } elseif ('is' === $token->getValue()) {
                $expr = $this->parseTestExpression($expr);
            } elseif (isset($op['callable'])) {
                $expr = \call_user_func($op['callable'], $this->parser, $expr);
            } else {
                $expr1 = $this->parseExpression(self::OPERATOR_LEFT === $op['associativity'] ? $op['precedence'] + 1 : $op['precedence']);
                $class = $op['class'];
                $expr = new $class($expr, $expr1, $token->getLine());
            }

            $token = $this->parser->getCurrentToken();
        }

        if (0 === $precedence) {
            return $this->parseConditionalExpression($expr);
        }

        return $expr;
    }

    /**
     * @return ArrowFunctionExpression|null
     */
    private function parseArrow()
    {
        $stream = $this->parser->getStream();

        // short array syntax (one argument, no parentheses)?
        if ($stream->look(1)->test(Token::ARROW_TYPE)) {
            $line = $stream->getCurrent()->getLine();
            $token = $stream->expect(Token::NAME_TYPE);
            $names = [new AssignNameExpression($token->getValue(), $token->getLine())];
            $stream->expect(Token::ARROW_TYPE);

            return new ArrowFunctionExpression($this->parseExpression(0), new Node($names), $line);
        }

        // first, determine if we are parsing an arrow function by finding => (long form)
        $i = 0;
        if (!$stream->look($i)->test(Token::PUNCTUATION_TYPE, '(')) {
            return null;
        }
        ++$i;
        while (true) {
            // variable name
            ++$i;
            if (!$stream->look($i)->test(Token::PUNCTUATION_TYPE, ',')) {
                break;
            }
            ++$i;
        }
        if (!$stream->look($i)->test(Token::PUNCTUATION_TYPE, ')')) {
            return null;
        }
        ++$i;
        if (!$stream->look($i)->test(Token::ARROW_TYPE)) {
            return null;
        }

        // yes, let's parse it properly
        $token = $stream->expect(Token::PUNCTUATION_TYPE, '(');
        $line = $token->getLine();

        $names = [];
        while (true) {
            $token = $stream->expect(Token::NAME_TYPE);
            $names[] = new AssignNameExpression($token->getValue(), $token->getLine());

            if (!$stream->nextIf(Token::PUNCTUATION_TYPE, ',')) {
                break;
            }
        }
        $stream->expect(Token::PUNCTUATION_TYPE, ')');
        $stream->expect(Token::ARROW_TYPE);

        return new ArrowFunctionExpression($this->parseExpression(0), new Node($names), $line);
    }

    protected function getPrimary()
    {
        $token = $this->parser->getCurrentToken();

        if ($this->isUnary($token)) {
            $operator = $this->unaryOperators[$token->getValue()];
            $this->parser->getStream()->next();
            $expr = $this->parseExpression($operator['precedence']);
            $class = $operator['class'];

            return $this->parsePostfixExpression(new $class($expr, $token->getLine()));
        } elseif ($token->test(Token::PUNCTUATION_TYPE, '(')) {
            $this->parser->getStream()->next();
            $expr = $this->parseExpression();
            $this->parser->getStream()->expect(Token::PUNCTUATION_TYPE, ')', 'An opened parenthesis is not properly closed');

            return $this->parsePostfixExpression($expr);
        }

        return $this->parsePrimaryExpression();
    }

    protected function parseConditionalExpression($expr)
    {
        while ($this->parser->getStream()->nextIf(Token::PUNCTUATION_TYPE, '?')) {
            if (!$this->parser->getStream()->nextIf(Token::PUNCTUATION_TYPE, ':')) {
                $expr2 = $this->parseExpression();
                if ($this->parser->getStream()->nextIf(Token::PUNCTUATION_TYPE, ':')) {
                    $expr3 = $this->parseExpression();
                } else {
                    $expr3 = new ConstantExpression('', $this->parser->getCurrentToken()->getLine());
                }
            } else {
                $expr2 = $expr;
                $expr3 = $this->parseExpression();
            }

            $expr = new ConditionalExpression($expr, $expr2, $expr3, $this->parser->getCurrentToken()->getLine());
        }

        return $expr;
    }

    protected function isUnary(Token $token)
    {
        return $token->test(Token::OPERATOR_TYPE) && isset($this->unaryOperators[$token->getValue()]);
    }

    protected function isBinary(Token $token)
    {
        return $token->test(Token::OPERATOR_TYPE) && isset($this->binaryOperators[$token->getValue()]);
    }

    public function parsePrimaryExpression()
    {
        $token = $this->parser->getCurrentToken();
        switch ($token->getType()) {
            case Token::NAME_TYPE:
                $this->parser->getStream()->next();
                switch ($token->getValue()) {
                    case 'true':
                    case 'TRUE':
                        $node = new ConstantExpression(true, $token->getLine());
                        break;

                    case 'false':
                    case 'FALSE':
                        $node = new ConstantExpression(false, $token->getLine());
                        break;

                    case 'none':
                    case 'NONE':
                    case 'null':
                    case 'NULL':
                        $node = new ConstantExpression(null, $token->getLine());
                        break;

                    default:
                        if ('(' === $this->parser->getCurrentToken()->getValue()) {
                            $node = $this->getFunctionNode($token->getValue(), $token->getLine());
                        } else {
                            $node = new NameExpression($token->getValue(), $token->getLine());
                        }
                }
                break;

            case Token::NUMBER_TYPE:
                $this->parser->getStream()->next();
                $node = new ConstantExpression($token->getValue(), $token->getLine());
                break;

            case Token::STRING_TYPE:
            case Token::INTERPOLATION_START_TYPE:
                $node = $this->parseStringExpression();
                break;

            case Token::OPERATOR_TYPE:
                if (preg_match(Lexer::REGEX_NAME, $token->getValue(), $matches) && $matches[0] == $token->getValue()) {
                    // in this context, string operators are variable names
                    $this->parser->getStream()->next();
                    $node = new NameExpression($token->getValue(), $token->getLine());
                    break;
                } elseif (isset($this->unaryOperators[$token->getValue()])) {
                    $class = $this->unaryOperators[$token->getValue()]['class'];

                    $ref = new \ReflectionClass($class);
                    $negClass = 'Twig\Node\Expression\Unary\NegUnary';
                    $posClass = 'Twig\Node\Expression\Unary\PosUnary';
                    if (!(\in_array($ref->getName(), [$negClass, $posClass, 'Twig_Node_Expression_Unary_Neg', 'Twig_Node_Expression_Unary_Pos'])
                        || $ref->isSubclassOf($negClass) || $ref->isSubclassOf($posClass)
                        || $ref->isSubclassOf('Twig_Node_Expression_Unary_Neg') || $ref->isSubclassOf('Twig_Node_Expression_Unary_Pos'))
                    ) {
                        throw new SyntaxError(sprintf('Unexpected unary operator "%s".', $token->getValue()), $token->getLine(), $this->parser->getStream()->getSourceContext());
                    }

                    $this->parser->getStream()->next();
                    $expr = $this->parsePrimaryExpression();

                    $node = new $class($expr, $token->getLine());
                    break;
                }

                // no break
            default:
                if ($token->test(Token::PUNCTUATION_TYPE, '[')) {
                    $node = $this->parseArrayExpression();
                } elseif ($token->test(Token::PUNCTUATION_TYPE, '{')) {
                    $node = $this->parseHashExpression();
                } elseif ($token->test(Token::OPERATOR_TYPE, '=') && ('==' === $this->parser->getStream()->look(-1)->getValue() || '!=' === $this->parser->getStream()->look(-1)->getValue())) {
                    throw new SyntaxError(sprintf('Unexpected operator of value "%s". Did you try to use "===" or "!==" for strict comparison? Use "is same as(value)" instead.', $token->getValue()), $token->getLine(), $this->parser->getStream()->getSourceContext());
                } else {
                    throw new SyntaxError(sprintf('Unexpected token "%s" of value "%s".', Token::typeToEnglish($token->getType()), $token->getValue()), $token->getLine(), $this->parser->getStream()->getSourceContext());
                }
        }

        return $this->parsePostfixExpression($node);
    }

    public function parseStringExpression()
    {
        $stream = $this->parser->getStream();

        $nodes = [];
        // a string cannot be followed by another string in a single expression
        $nextCanBeString = true;
        while (true) {
            if ($nextCanBeString && $token = $stream->nextIf(Token::STRING_TYPE)) {
                $nodes[] = new ConstantExpression($token->getValue(), $token->getLine());
                $nextCanBeString = false;
            } elseif ($stream->nextIf(Token::INTERPOLATION_START_TYPE)) {
                $nodes[] = $this->parseExpression();
                $stream->expect(Token::INTERPOLATION_END_TYPE);
                $nextCanBeString = true;
            } else {
                break;
            }
        }

        $expr = array_shift($nodes);
        foreach ($nodes as $node) {
            $expr = new ConcatBinary($expr, $node, $node->getTemplateLine());
        }

        return $expr;
    }

    public function parseArrayExpression()
    {
        $stream = $this->parser->getStream();
        $stream->expect(Token::PUNCTUATION_TYPE, '[', 'An array element was expected');

        $node = new ArrayExpression([], $stream->getCurrent()->getLine());
        $first = true;
        while (!$stream->test(Token::PUNCTUATION_TYPE, ']')) {
            if (!$first) {
                $stream->expect(Token::PUNCTUATION_TYPE, ',', 'An array element must be followed by a comma');

                // trailing ,?
                if ($stream->test(Token::PUNCTUATION_TYPE, ']')) {
                    break;
                }
            }
            $first = false;

            $node->addElement($this->parseExpression());
        }
        $stream->expect(Token::PUNCTUATION_TYPE, ']', 'An opened array is not properly closed');

        return $node;
    }

    public function parseHashExpression()
    {
        $stream = $this->parser->getStream();
        $stream->expect(Token::PUNCTUATION_TYPE, '{', 'A hash element was expected');

        $node = new ArrayExpression([], $stream->getCurrent()->getLine());
        $first = true;
        while (!$stream->test(Token::PUNCTUATION_TYPE, '}')) {
            if (!$first) {
                $stream->expect(Token::PUNCTUATION_TYPE, ',', 'A hash value must be followed by a comma');

                // trailing ,?
                if ($stream->test(Token::PUNCTUATION_TYPE, '}')) {
                    break;
                }
            }
            $first = false;

            // a hash key can be:
            //
            //  * a number -- 12
            //  * a string -- 'a'
            //  * a name, which is equivalent to a string -- a
            //  * an expression, which must be enclosed in parentheses -- (1 + 2)
            if (($token = $stream->nextIf(Token::STRING_TYPE)) || ($token = $stream->nextIf(Token::NAME_TYPE)) || $token = $stream->nextIf(Token::NUMBER_TYPE)) {
                $key = new ConstantExpression($token->getValue(), $token->getLine());
            } elseif ($stream->test(Token::PUNCTUATION_TYPE, '(')) {
                $key = $this->parseExpression();
            } else {
                $current = $stream->getCurrent();

                throw new SyntaxError(sprintf('A hash key must be a quoted string, a number, a name, or an expression enclosed in parentheses (unexpected token "%s" of value "%s".', Token::typeToEnglish($current->getType()), $current->getValue()), $current->getLine(), $stream->getSourceContext());
            }

            $stream->expect(Token::PUNCTUATION_TYPE, ':', 'A hash key must be followed by a colon (:)');
            $value = $this->parseExpression();

            $node->addElement($value, $key);
        }
        $stream->expect(Token::PUNCTUATION_TYPE, '}', 'An opened hash is not properly closed');

        return $node;
    }

    public function parsePostfixExpression($node)
    {
        while (true) {
            $token = $this->parser->getCurrentToken();
            if (Token::PUNCTUATION_TYPE == $token->getType()) {
                if ('.' == $token->getValue() || '[' == $token->getValue()) {
                    $node = $this->parseSubscriptExpression($node);
                } elseif ('|' == $token->getValue()) {
                    $node = $this->parseFilterExpression($node);
                } else {
                    break;
                }
            } else {
                break;
            }
        }

        return $node;
    }

    public function getFunctionNode($name, $line)
    {
        switch ($name) {
            case 'parent':
                $this->parseArguments();
                if (!\count($this->parser->getBlockStack())) {
                    throw new SyntaxError('Calling "parent" outside a block is forbidden.', $line, $this->parser->getStream()->getSourceContext());
                }

                if (!$this->parser->getParent() && !$this->parser->hasTraits()) {
                    throw new SyntaxError('Calling "parent" on a template that does not extend nor "use" another template is forbidden.', $line, $this->parser->getStream()->getSourceContext());
                }

                return new ParentExpression($this->parser->peekBlockStack(), $line);
            case 'block':
                $args = $this->parseArguments();
                if (\count($args) < 1) {
                    throw new SyntaxError('The "block" function takes one argument (the block name).', $line, $this->parser->getStream()->getSourceContext());
                }

                return new BlockReferenceExpression($args->getNode(0), \count($args) > 1 ? $args->getNode(1) : null, $line);
            case 'attribute':
                $args = $this->parseArguments();
                if (\count($args) < 2) {
                    throw new SyntaxError('The "attribute" function takes at least two arguments (the variable and the attributes).', $line, $this->parser->getStream()->getSourceContext());
                }

                return new GetAttrExpression($args->getNode(0), $args->getNode(1), \count($args) > 2 ? $args->getNode(2) : null, Template::ANY_CALL, $line);
            default:
                if (null !== $alias = $this->parser->getImportedSymbol('function', $name)) {
                    $arguments = new ArrayExpression([], $line);
                    foreach ($this->parseArguments() as $n) {
                        $arguments->addElement($n);
                    }

                    $node = new MethodCallExpression($alias['node'], $alias['name'], $arguments, $line);
                    $node->setAttribute('safe', true);

                    return $node;
                }

                $args = $this->parseArguments(true);
                $class = $this->getFunctionNodeClass($name, $line);

                return new $class($name, $args, $line);
        }
    }

    public function parseSubscriptExpression($node)
    {
        $stream = $this->parser->getStream();
        $token = $stream->next();
        $lineno = $token->getLine();
        $arguments = new ArrayExpression([], $lineno);
        $type = Template::ANY_CALL;
        if ('.' == $token->getValue()) {
            $token = $stream->next();
            if (
                Token::NAME_TYPE == $token->getType()
                ||
                Token::NUMBER_TYPE == $token->getType()
                ||
                (Token::OPERATOR_TYPE == $token->getType() && preg_match(Lexer::REGEX_NAME, $token->getValue()))
            ) {
                $arg = new ConstantExpression($token->getValue(), $lineno);

                if ($stream->test(Token::PUNCTUATION_TYPE, '(')) {
                    $type = Template::METHOD_CALL;
                    foreach ($this->parseArguments() as $n) {
                        $arguments->addElement($n);
                    }
                }
            } else {
                throw new SyntaxError('Expected name or number.', $lineno, $stream->getSourceContext());
            }

            if ($node instanceof NameExpression && null !== $this->parser->getImportedSymbol('template', $node->getAttribute('name'))) {
                if (!$arg instanceof ConstantExpression) {
                    throw new SyntaxError(sprintf('Dynamic macro names are not supported (called on "%s").', $node->getAttribute('name')), $token->getLine(), $stream->getSourceContext());
                }

                $name = $arg->getAttribute('value');

                if ($this->parser->isReservedMacroName($name)) {
                    throw new SyntaxError(sprintf('"%s" cannot be called as macro as it is a reserved keyword.', $name), $token->getLine(), $stream->getSourceContext());
                }

                $node = new MethodCallExpression($node, 'get'.$name, $arguments, $lineno);
                $node->setAttribute('safe', true);

                return $node;
            }
        } else {
            $type = Template::ARRAY_CALL;

            // slice?
            $slice = false;
            if ($stream->test(Token::PUNCTUATION_TYPE, ':')) {
                $slice = true;
                $arg = new ConstantExpression(0, $token->getLine());
            } else {
                $arg = $this->parseExpression();
            }

            if ($stream->nextIf(Token::PUNCTUATION_TYPE, ':')) {
                $slice = true;
            }

            if ($slice) {
                if ($stream->test(Token::PUNCTUATION_TYPE, ']')) {
                    $length = new ConstantExpression(null, $token->getLine());
                } else {
                    $length = $this->parseExpression();
                }

                $class = $this->getFilterNodeClass('slice', $token->getLine());
                $arguments = new Node([$arg, $length]);
                $filter = new $class($node, new ConstantExpression('slice', $token->getLine()), $arguments, $token->getLine());

                $stream->expect(Token::PUNCTUATION_TYPE, ']');

                return $filter;
            }

            $stream->expect(Token::PUNCTUATION_TYPE, ']');
        }

        return new GetAttrExpression($node, $arg, $arguments, $type, $lineno);
    }

    public function parseFilterExpression($node)
    {
        $this->parser->getStream()->next();

        return $this->parseFilterExpressionRaw($node);
    }

    public function parseFilterExpressionRaw($node, $tag = null)
    {
        while (true) {
            $token = $this->parser->getStream()->expect(Token::NAME_TYPE);

            $name = new ConstantExpression($token->getValue(), $token->getLine());
            if (!$this->parser->getStream()->test(Token::PUNCTUATION_TYPE, '(')) {
                $arguments = new Node();
            } else {
                $arguments = $this->parseArguments(true, false, true);
            }

            $class = $this->getFilterNodeClass($name->getAttribute('value'), $token->getLine());

            $node = new $class($node, $name, $arguments, $token->getLine(), $tag);

            if (!$this->parser->getStream()->test(Token::PUNCTUATION_TYPE, '|')) {
                break;
            }

            $this->parser->getStream()->next();
        }

        return $node;
    }

    /**
     * Parses arguments.
     *
     * @param bool $namedArguments Whether to allow named arguments or not
     * @param bool $definition     Whether we are parsing arguments for a function definition
     *
     * @return Node
     *
     * @throws SyntaxError
     */
    public function parseArguments($namedArguments = false, $definition = false, $allowArrow = false)
    {
        $args = [];
        $stream = $this->parser->getStream();

        $stream->expect(Token::PUNCTUATION_TYPE, '(', 'A list of arguments must begin with an opening parenthesis');
        while (!$stream->test(Token::PUNCTUATION_TYPE, ')')) {
            if (!empty($args)) {
                $stream->expect(Token::PUNCTUATION_TYPE, ',', 'Arguments must be separated by a comma');
            }

            if ($definition) {
                $token = $stream->expect(Token::NAME_TYPE, null, 'An argument must be a name');
                $value = new NameExpression($token->getValue(), $this->parser->getCurrentToken()->getLine());
            } else {
                $value = $this->parseExpression(0, $allowArrow);
            }

            $name = null;
            if ($namedArguments && $token = $stream->nextIf(Token::OPERATOR_TYPE, '=')) {
                if (!$value instanceof NameExpression) {
                    throw new SyntaxError(sprintf('A parameter name must be a string, "%s" given.', \get_class($value)), $token->getLine(), $stream->getSourceContext());
                }
                $name = $value->getAttribute('name');

                if ($definition) {
                    $value = $this->parsePrimaryExpression();

                    if (!$this->checkConstantExpression($value)) {
                        throw new SyntaxError(sprintf('A default value for an argument must be a constant (a boolean, a string, a number, or an array).'), $token->getLine(), $stream->getSourceContext());
                    }
                } else {
                    $value = $this->parseExpression(0, $allowArrow);
                }
            }

            if ($definition) {
                if (null === $name) {
                    $name = $value->getAttribute('name');
                    $value = new ConstantExpression(null, $this->parser->getCurrentToken()->getLine());
                }
                $args[$name] = $value;
            } else {
                if (null === $name) {
                    $args[] = $value;
                } else {
                    $args[$name] = $value;
                }
            }
        }
        $stream->expect(Token::PUNCTUATION_TYPE, ')', 'A list of arguments must be closed by a parenthesis');

        return new Node($args);
    }

    public function parseAssignmentExpression()
    {
        $stream = $this->parser->getStream();
        $targets = [];
        while (true) {
            $token = $this->parser->getCurrentToken();
            if ($stream->test(Token::OPERATOR_TYPE) && preg_match(Lexer::REGEX_NAME, $token->getValue())) {
                // in this context, string operators are variable names
                $this->parser->getStream()->next();
            } else {
                $stream->expect(Token::NAME_TYPE, null, 'Only variables can be assigned to');
            }
            $value = $token->getValue();
            if (\in_array(strtolower($value), ['true', 'false', 'none', 'null'])) {
                throw new SyntaxError(sprintf('You cannot assign a value to "%s".', $value), $token->getLine(), $stream->getSourceContext());
            }
            $targets[] = new AssignNameExpression($value, $token->getLine());

            if (!$stream->nextIf(Token::PUNCTUATION_TYPE, ',')) {
                break;
            }
        }

        return new Node($targets);
    }

    public function parseMultitargetExpression()
    {
        $targets = [];
        while (true) {
            $targets[] = $this->parseExpression();
            if (!$this->parser->getStream()->nextIf(Token::PUNCTUATION_TYPE, ',')) {
                break;
            }
        }

        return new Node($targets);
    }

    private function parseNotTestExpression(\Twig_NodeInterface $node)
    {
        return new NotUnary($this->parseTestExpression($node), $this->parser->getCurrentToken()->getLine());
    }

    private function parseTestExpression(\Twig_NodeInterface $node)
    {
        $stream = $this->parser->getStream();
        list($name, $test) = $this->getTest($node->getTemplateLine());

        $class = $this->getTestNodeClass($test);
        $arguments = null;
        if ($stream->test(Token::PUNCTUATION_TYPE, '(')) {
            $arguments = $this->parseArguments(true);
        }

        return new $class($node, $name, $arguments, $this->parser->getCurrentToken()->getLine());
    }

    private function getTest($line)
    {
        $stream = $this->parser->getStream();
        $name = $stream->expect(Token::NAME_TYPE)->getValue();

        if ($test = $this->env->getTest($name)) {
            return [$name, $test];
        }

        if ($stream->test(Token::NAME_TYPE)) {
            // try 2-words tests
            $name = $name.' '.$this->parser->getCurrentToken()->getValue();

            if ($test = $this->env->getTest($name)) {
                $stream->next();

                return [$name, $test];
            }
        }

        $e = new SyntaxError(sprintf('Unknown "%s" test.', $name), $line, $stream->getSourceContext());
        $e->addSuggestions($name, array_keys($this->env->getTests()));

        throw $e;
    }

    private function getTestNodeClass($test)
    {
        if ($test instanceof TwigTest && $test->isDeprecated()) {
            $stream = $this->parser->getStream();
            $message = sprintf('Twig Test "%s" is deprecated', $test->getName());
            if (!\is_bool($test->getDeprecatedVersion())) {
                $message .= sprintf(' since version %s', $test->getDeprecatedVersion());
            }
            if ($test->getAlternative()) {
                $message .= sprintf('. Use "%s" instead', $test->getAlternative());
            }
            $src = $stream->getSourceContext();
            $message .= sprintf(' in %s at line %d.', $src->getPath() ? $src->getPath() : $src->getName(), $stream->getCurrent()->getLine());

            @trigger_error($message, E_USER_DEPRECATED);
        }

        if ($test instanceof TwigTest) {
            return $test->getNodeClass();
        }

        return $test instanceof \Twig_Test_Node ? $test->getClass() : 'Twig\Node\Expression\TestExpression';
    }

    protected function getFunctionNodeClass($name, $line)
    {
        if (false === $function = $this->env->getFunction($name)) {
            $e = new SyntaxError(sprintf('Unknown "%s" function.', $name), $line, $this->parser->getStream()->getSourceContext());
            $e->addSuggestions($name, array_keys($this->env->getFunctions()));

            throw $e;
        }

        if ($function instanceof TwigFunction && $function->isDeprecated()) {
            $message = sprintf('Twig Function "%s" is deprecated', $function->getName());
            if (!\is_bool($function->getDeprecatedVersion())) {
                $message .= sprintf(' since version %s', $function->getDeprecatedVersion());
            }
            if ($function->getAlternative()) {
                $message .= sprintf('. Use "%s" instead', $function->getAlternative());
            }
            $src = $this->parser->getStream()->getSourceContext();
            $message .= sprintf(' in %s at line %d.', $src->getPath() ? $src->getPath() : $src->getName(), $line);

            @trigger_error($message, E_USER_DEPRECATED);
        }

        if ($function instanceof TwigFunction) {
            return $function->getNodeClass();
        }

        return $function instanceof \Twig_Function_Node ? $function->getClass() : 'Twig\Node\Expression\FunctionExpression';
    }

    protected function getFilterNodeClass($name, $line)
    {
        if (false === $filter = $this->env->getFilter($name)) {
            $e = new SyntaxError(sprintf('Unknown "%s" filter.', $name), $line, $this->parser->getStream()->getSourceContext());
            $e->addSuggestions($name, array_keys($this->env->getFilters()));

            throw $e;
        }

        if ($filter instanceof TwigFilter && $filter->isDeprecated()) {
            $message = sprintf('Twig Filter "%s" is deprecated', $filter->getName());
            if (!\is_bool($filter->getDeprecatedVersion())) {
                $message .= sprintf(' since version %s', $filter->getDeprecatedVersion());
            }
            if ($filter->getAlternative()) {
                $message .= sprintf('. Use "%s" instead', $filter->getAlternative());
            }
            $src = $this->parser->getStream()->getSourceContext();
            $message .= sprintf(' in %s at line %d.', $src->getPath() ? $src->getPath() : $src->getName(), $line);

            @trigger_error($message, E_USER_DEPRECATED);
        }

        if ($filter instanceof TwigFilter) {
            return $filter->getNodeClass();
        }

        return $filter instanceof \Twig_Filter_Node ? $filter->getClass() : 'Twig\Node\Expression\FilterExpression';
    }

    // checks that the node only contains "constant" elements
    protected function checkConstantExpression(\Twig_NodeInterface $node)
    {
        if (!($node instanceof ConstantExpression || $node instanceof ArrayExpression
            || $node instanceof NegUnary || $node instanceof PosUnary
        )) {
            return false;
        }

        foreach ($node as $n) {
            if (!$this->checkConstantExpression($n)) {
                return false;
            }
        }

        return true;
    }
}

class_alias('Twig\ExpressionParser', 'Twig_ExpressionParser');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig;

/**
 * Marks a content as safe.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class Markup implements \Countable
{
    protected $content;
    protected $charset;

    public function __construct($content, $charset)
    {
        $this->content = (string) $content;
        $this->charset = $charset;
    }

    public function __toString()
    {
        return $this->content;
    }

    public function count()
    {
        return \function_exists('mb_get_info') ? mb_strlen($this->content, $this->charset) : \strlen($this->content);
    }
}

class_alias('Twig\Markup', 'Twig_Markup');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig;

/**
 * Exposes a template to userland.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
final class TemplateWrapper
{
    private $env;
    private $template;

    /**
     * This method is for internal use only and should never be called
     * directly (use Twig\Environment::load() instead).
     *
     * @internal
     */
    public function __construct(Environment $env, Template $template)
    {
        $this->env = $env;
        $this->template = $template;
    }

    /**
     * Renders the template.
     *
     * @param array $context An array of parameters to pass to the template
     *
     * @return string The rendered template
     */
    public function render($context = [])
    {
        // using func_get_args() allows to not expose the blocks argument
        // as it should only be used by internal code
        return $this->template->render($context, \func_num_args() > 1 ? func_get_arg(1) : []);
    }

    /**
     * Displays the template.
     *
     * @param array $context An array of parameters to pass to the template
     */
    public function display($context = [])
    {
        // using func_get_args() allows to not expose the blocks argument
        // as it should only be used by internal code
        $this->template->display($context, \func_num_args() > 1 ? func_get_arg(1) : []);
    }

    /**
     * Checks if a block is defined.
     *
     * @param string $name    The block name
     * @param array  $context An array of parameters to pass to the template
     *
     * @return bool
     */
    public function hasBlock($name, $context = [])
    {
        return $this->template->hasBlock($name, $context);
    }

    /**
     * Returns defined block names in the template.
     *
     * @param array $context An array of parameters to pass to the template
     *
     * @return string[] An array of defined template block names
     */
    public function getBlockNames($context = [])
    {
        return $this->template->getBlockNames($context);
    }

    /**
     * Renders a template block.
     *
     * @param string $name    The block name to render
     * @param array  $context An array of parameters to pass to the template
     *
     * @return string The rendered block
     */
    public function renderBlock($name, $context = [])
    {
        $context = $this->env->mergeGlobals($context);
        $level = ob_get_level();
        if ($this->env->isDebug()) {
            ob_start();
        } else {
            ob_start(function () { return ''; });
        }
        try {
            $this->template->displayBlock($name, $context);
        } catch (\Exception $e) {
            while (ob_get_level() > $level) {
                ob_end_clean();
            }

            throw $e;
        } catch (\Throwable $e) {
            while (ob_get_level() > $level) {
                ob_end_clean();
            }

            throw $e;
        }

        return ob_get_clean();
    }

    /**
     * Displays a template block.
     *
     * @param string $name    The block name to render
     * @param array  $context An array of parameters to pass to the template
     */
    public function displayBlock($name, $context = [])
    {
        $this->template->displayBlock($name, $this->env->mergeGlobals($context));
    }

    /**
     * @return Source
     */
    public function getSourceContext()
    {
        return $this->template->getSourceContext();
    }

    /**
     * @return string
     */
    public function getTemplateName()
    {
        return $this->template->getTemplateName();
    }

    /**
     * @internal
     *
     * @return Template
     */
    public function unwrap()
    {
        return $this->template;
    }
}

class_alias('Twig\TemplateWrapper', 'Twig_TemplateWrapper');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig;

/**
 * Represents a template test.
 *
 * @final
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class TwigTest
{
    protected $name;
    protected $callable;
    protected $options;

    private $arguments = [];

    public function __construct($name, $callable, array $options = [])
    {
        $this->name = $name;
        $this->callable = $callable;
        $this->options = array_merge([
            'is_variadic' => false,
            'node_class' => '\Twig\Node\Expression\TestExpression',
            'deprecated' => false,
            'alternative' => null,
        ], $options);
    }

    public function getName()
    {
        return $this->name;
    }

    public function getCallable()
    {
        return $this->callable;
    }

    public function getNodeClass()
    {
        return $this->options['node_class'];
    }

    public function isVariadic()
    {
        return $this->options['is_variadic'];
    }

    public function isDeprecated()
    {
        return (bool) $this->options['deprecated'];
    }

    public function getDeprecatedVersion()
    {
        return $this->options['deprecated'];
    }

    public function getAlternative()
    {
        return $this->options['alternative'];
    }

    public function setArguments($arguments)
    {
        $this->arguments = $arguments;
    }

    public function getArguments()
    {
        return $this->arguments;
    }
}

class_alias('Twig\TwigTest', 'Twig_SimpleTest');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\RuntimeLoader;

/**
 * Creates runtime implementations for Twig elements (filters/functions/tests).
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
interface RuntimeLoaderInterface
{
    /**
     * Creates the runtime implementation of a Twig element (filter/function/test).
     *
     * @param string $class A runtime class
     *
     * @return object|null The runtime instance or null if the loader does not know how to create the runtime for this class
     */
    public function load($class);
}

class_alias('Twig\RuntimeLoader\RuntimeLoaderInterface', 'Twig_RuntimeLoaderInterface');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\RuntimeLoader;

/**
 * Lazy loads the runtime implementations for a Twig element.
 *
 * @author Robin Chalas <robin.chalas@gmail.com>
 */
class FactoryRuntimeLoader implements RuntimeLoaderInterface
{
    private $map;

    /**
     * @param array $map An array where keys are class names and values factory callables
     */
    public function __construct($map = [])
    {
        $this->map = $map;
    }

    public function load($class)
    {
        if (isset($this->map[$class])) {
            $runtimeFactory = $this->map[$class];

            return $runtimeFactory();
        }
    }
}

class_alias('Twig\RuntimeLoader\FactoryRuntimeLoader', 'Twig_FactoryRuntimeLoader');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\RuntimeLoader;

use Psr\Container\ContainerInterface;

/**
 * Lazily loads Twig runtime implementations from a PSR-11 container.
 *
 * Note that the runtime services MUST use their class names as identifiers.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Robin Chalas <robin.chalas@gmail.com>
 */
class ContainerRuntimeLoader implements RuntimeLoaderInterface
{
    private $container;

    public function __construct(ContainerInterface $container)
    {
        $this->container = $container;
    }

    public function load($class)
    {
        if ($this->container->has($class)) {
            return $this->container->get($class);
        }
    }
}

class_alias('Twig\RuntimeLoader\ContainerRuntimeLoader', 'Twig_ContainerRuntimeLoader');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Sandbox;

use Twig\Markup;

/**
 * Represents a security policy which need to be enforced when sandbox mode is enabled.
 *
 * @final
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class SecurityPolicy implements SecurityPolicyInterface
{
    protected $allowedTags;
    protected $allowedFilters;
    protected $allowedMethods;
    protected $allowedProperties;
    protected $allowedFunctions;

    public function __construct(array $allowedTags = [], array $allowedFilters = [], array $allowedMethods = [], array $allowedProperties = [], array $allowedFunctions = [])
    {
        $this->allowedTags = $allowedTags;
        $this->allowedFilters = $allowedFilters;
        $this->setAllowedMethods($allowedMethods);
        $this->allowedProperties = $allowedProperties;
        $this->allowedFunctions = $allowedFunctions;
    }

    public function setAllowedTags(array $tags)
    {
        $this->allowedTags = $tags;
    }

    public function setAllowedFilters(array $filters)
    {
        $this->allowedFilters = $filters;
    }

    public function setAllowedMethods(array $methods)
    {
        $this->allowedMethods = [];
        foreach ($methods as $class => $m) {
            $this->allowedMethods[$class] = array_map('strtolower', \is_array($m) ? $m : [$m]);
        }
    }

    public function setAllowedProperties(array $properties)
    {
        $this->allowedProperties = $properties;
    }

    public function setAllowedFunctions(array $functions)
    {
        $this->allowedFunctions = $functions;
    }

    public function checkSecurity($tags, $filters, $functions)
    {
        foreach ($tags as $tag) {
            if (!\in_array($tag, $this->allowedTags)) {
                throw new SecurityNotAllowedTagError(sprintf('Tag "%s" is not allowed.', $tag), $tag);
            }
        }

        foreach ($filters as $filter) {
            if (!\in_array($filter, $this->allowedFilters)) {
                throw new SecurityNotAllowedFilterError(sprintf('Filter "%s" is not allowed.', $filter), $filter);
            }
        }

        foreach ($functions as $function) {
            if (!\in_array($function, $this->allowedFunctions)) {
                throw new SecurityNotAllowedFunctionError(sprintf('Function "%s" is not allowed.', $function), $function);
            }
        }
    }

    public function checkMethodAllowed($obj, $method)
    {
        if ($obj instanceof \Twig_TemplateInterface || $obj instanceof Markup) {
            return;
        }

        $allowed = false;
        $method = strtolower($method);
        foreach ($this->allowedMethods as $class => $methods) {
            if ($obj instanceof $class) {
                $allowed = \in_array($method, $methods);

                break;
            }
        }

        if (!$allowed) {
            $class = \get_class($obj);
            throw new SecurityNotAllowedMethodError(sprintf('Calling "%s" method on a "%s" object is not allowed.', $method, $class), $class, $method);
        }
    }

    public function checkPropertyAllowed($obj, $property)
    {
        $allowed = false;
        foreach ($this->allowedProperties as $class => $properties) {
            if ($obj instanceof $class) {
                $allowed = \in_array($property, \is_array($properties) ? $properties : [$properties]);

                break;
            }
        }

        if (!$allowed) {
            $class = \get_class($obj);
            throw new SecurityNotAllowedPropertyError(sprintf('Calling "%s" property on a "%s" object is not allowed.', $property, $class), $class, $property);
        }
    }
}

class_alias('Twig\Sandbox\SecurityPolicy', 'Twig_Sandbox_SecurityPolicy');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Sandbox;

/**
 * Exception thrown when a not allowed function is used in a template.
 *
 * @author Martin HasoÅˆ <martin.hason@gmail.com>
 */
class SecurityNotAllowedFunctionError extends SecurityError
{
    private $functionName;

    public function __construct($message, $functionName, $lineno = -1, $filename = null, \Exception $previous = null)
    {
        parent::__construct($message, $lineno, $filename, $previous);
        $this->functionName = $functionName;
    }

    public function getFunctionName()
    {
        return $this->functionName;
    }
}

class_alias('Twig\Sandbox\SecurityNotAllowedFunctionError', 'Twig_Sandbox_SecurityNotAllowedFunctionError');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Sandbox;

/**
 * Exception thrown when a not allowed class method is used in a template.
 *
 * @author Kit Burton-Senior <mail@kitbs.com>
 */
class SecurityNotAllowedMethodError extends SecurityError
{
    private $className;
    private $methodName;

    public function __construct($message, $className, $methodName, $lineno = -1, $filename = null, \Exception $previous = null)
    {
        parent::__construct($message, $lineno, $filename, $previous);
        $this->className = $className;
        $this->methodName = $methodName;
    }

    public function getClassName()
    {
        return $this->className;
    }

    public function getMethodName()
    {
        return $this->methodName;
    }
}

class_alias('Twig\Sandbox\SecurityNotAllowedMethodError', 'Twig_Sandbox_SecurityNotAllowedMethodError');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Sandbox;

use Twig\Error\Error;

/**
 * Exception thrown when a security error occurs at runtime.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class SecurityError extends Error
{
}

class_alias('Twig\Sandbox\SecurityError', 'Twig_Sandbox_SecurityError');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Sandbox;

/**
 * Interface that all security policy classes must implements.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
interface SecurityPolicyInterface
{
    public function checkSecurity($tags, $filters, $functions);

    public function checkMethodAllowed($obj, $method);

    public function checkPropertyAllowed($obj, $method);
}

class_alias('Twig\Sandbox\SecurityPolicyInterface', 'Twig_Sandbox_SecurityPolicyInterface');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Sandbox;

/**
 * Exception thrown when a not allowed tag is used in a template.
 *
 * @author Martin HasoÅˆ <martin.hason@gmail.com>
 */
class SecurityNotAllowedTagError extends SecurityError
{
    private $tagName;

    public function __construct($message, $tagName, $lineno = -1, $filename = null, \Exception $previous = null)
    {
        parent::__construct($message, $lineno, $filename, $previous);
        $this->tagName = $tagName;
    }

    public function getTagName()
    {
        return $this->tagName;
    }
}

class_alias('Twig\Sandbox\SecurityNotAllowedTagError', 'Twig_Sandbox_SecurityNotAllowedTagError');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Sandbox;

/**
 * Exception thrown when a not allowed filter is used in a template.
 *
 * @author Martin HasoÅˆ <martin.hason@gmail.com>
 */
class SecurityNotAllowedFilterError extends SecurityError
{
    private $filterName;

    public function __construct($message, $functionName, $lineno = -1, $filename = null, \Exception $previous = null)
    {
        parent::__construct($message, $lineno, $filename, $previous);
        $this->filterName = $functionName;
    }

    public function getFilterName()
    {
        return $this->filterName;
    }
}

class_alias('Twig\Sandbox\SecurityNotAllowedFilterError', 'Twig_Sandbox_SecurityNotAllowedFilterError');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Sandbox;

/**
 * Exception thrown when a not allowed class property is used in a template.
 *
 * @author Kit Burton-Senior <mail@kitbs.com>
 */
class SecurityNotAllowedPropertyError extends SecurityError
{
    private $className;
    private $propertyName;

    public function __construct($message, $className, $propertyName, $lineno = -1, $filename = null, \Exception $previous = null)
    {
        parent::__construct($message, $lineno, $filename, $previous);
        $this->className = $className;
        $this->propertyName = $propertyName;
    }

    public function getClassName()
    {
        return $this->className;
    }

    public function getPropertyName()
    {
        return $this->propertyName;
    }
}

class_alias('Twig\Sandbox\SecurityNotAllowedPropertyError', 'Twig_Sandbox_SecurityNotAllowedPropertyError');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Loader;

use Twig\Error\LoaderError;
use Twig\Source;

/**
 * Loads template from the filesystem.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class FilesystemLoader implements LoaderInterface, ExistsLoaderInterface, SourceContextLoaderInterface
{
    /** Identifier of the main namespace. */
    const MAIN_NAMESPACE = '__main__';

    protected $paths = [];
    protected $cache = [];
    protected $errorCache = [];

    private $rootPath;

    /**
     * @param string|array $paths    A path or an array of paths where to look for templates
     * @param string|null  $rootPath The root path common to all relative paths (null for getcwd())
     */
    public function __construct($paths = [], $rootPath = null)
    {
        $this->rootPath = (null === $rootPath ? getcwd() : $rootPath).\DIRECTORY_SEPARATOR;
        if (false !== $realPath = realpath($rootPath)) {
            $this->rootPath = $realPath.\DIRECTORY_SEPARATOR;
        }

        if ($paths) {
            $this->setPaths($paths);
        }
    }

    /**
     * Returns the paths to the templates.
     *
     * @param string $namespace A path namespace
     *
     * @return array The array of paths where to look for templates
     */
    public function getPaths($namespace = self::MAIN_NAMESPACE)
    {
        return isset($this->paths[$namespace]) ? $this->paths[$namespace] : [];
    }

    /**
     * Returns the path namespaces.
     *
     * The main namespace is always defined.
     *
     * @return array The array of defined namespaces
     */
    public function getNamespaces()
    {
        return array_keys($this->paths);
    }

    /**
     * Sets the paths where templates are stored.
     *
     * @param string|array $paths     A path or an array of paths where to look for templates
     * @param string       $namespace A path namespace
     */
    public function setPaths($paths, $namespace = self::MAIN_NAMESPACE)
    {
        if (!\is_array($paths)) {
            $paths = [$paths];
        }

        $this->paths[$namespace] = [];
        foreach ($paths as $path) {
            $this->addPath($path, $namespace);
        }
    }

    /**
     * Adds a path where templates are stored.
     *
     * @param string $path      A path where to look for templates
     * @param string $namespace A path namespace
     *
     * @throws LoaderError
     */
    public function addPath($path, $namespace = self::MAIN_NAMESPACE)
    {
        // invalidate the cache
        $this->cache = $this->errorCache = [];

        $checkPath = $this->isAbsolutePath($path) ? $path : $this->rootPath.$path;
        if (!is_dir($checkPath)) {
            throw new LoaderError(sprintf('The "%s" directory does not exist ("%s").', $path, $checkPath));
        }

        $this->paths[$namespace][] = rtrim($path, '/\\');
    }

    /**
     * Prepends a path where templates are stored.
     *
     * @param string $path      A path where to look for templates
     * @param string $namespace A path namespace
     *
     * @throws LoaderError
     */
    public function prependPath($path, $namespace = self::MAIN_NAMESPACE)
    {
        // invalidate the cache
        $this->cache = $this->errorCache = [];

        $checkPath = $this->isAbsolutePath($path) ? $path : $this->rootPath.$path;
        if (!is_dir($checkPath)) {
            throw new LoaderError(sprintf('The "%s" directory does not exist ("%s").', $path, $checkPath));
        }

        $path = rtrim($path, '/\\');

        if (!isset($this->paths[$namespace])) {
            $this->paths[$namespace][] = $path;
        } else {
            array_unshift($this->paths[$namespace], $path);
        }
    }

    public function getSource($name)
    {
        @trigger_error(sprintf('Calling "getSource" on "%s" is deprecated since 1.27. Use getSourceContext() instead.', \get_class($this)), E_USER_DEPRECATED);

        if (null === ($path = $this->findTemplate($name)) || false === $path) {
            return '';
        }

        return file_get_contents($path);
    }

    public function getSourceContext($name)
    {
        if (null === ($path = $this->findTemplate($name)) || false === $path) {
            return new Source('', $name, '');
        }

        return new Source(file_get_contents($path), $name, $path);
    }

    public function getCacheKey($name)
    {
        if (null === ($path = $this->findTemplate($name)) || false === $path) {
            return '';
        }
        $len = \strlen($this->rootPath);
        if (0 === strncmp($this->rootPath, $path, $len)) {
            return substr($path, $len);
        }

        return $path;
    }

    public function exists($name)
    {
        $name = $this->normalizeName($name);

        if (isset($this->cache[$name])) {
            return true;
        }

        try {
            return null !== ($path = $this->findTemplate($name, false)) && false !== $path;
        } catch (LoaderError $e) {
            @trigger_error(sprintf('In %s::findTemplate(), you must accept a second argument that when set to "false" returns "false" instead of throwing an exception. Not supporting this argument is deprecated since version 1.27.', \get_class($this)), E_USER_DEPRECATED);

            return false;
        }
    }

    public function isFresh($name, $time)
    {
        // false support to be removed in 3.0
        if (null === ($path = $this->findTemplate($name)) || false === $path) {
            return false;
        }

        return filemtime($path) < $time;
    }

    /**
     * Checks if the template can be found.
     *
     * @param string $name The template name
     *
     * @return string|false|null The template name or false/null
     */
    protected function findTemplate($name)
    {
        $throw = \func_num_args() > 1 ? func_get_arg(1) : true;
        $name = $this->normalizeName($name);

        if (isset($this->cache[$name])) {
            return $this->cache[$name];
        }

        if (isset($this->errorCache[$name])) {
            if (!$throw) {
                return false;
            }

            throw new LoaderError($this->errorCache[$name]);
        }

        try {
            $this->validateName($name);

            list($namespace, $shortname) = $this->parseName($name);
        } catch (LoaderError $e) {
            if (!$throw) {
                return false;
            }

            throw $e;
        }

        if (!isset($this->paths[$namespace])) {
            $this->errorCache[$name] = sprintf('There are no registered paths for namespace "%s".', $namespace);

            if (!$throw) {
                return false;
            }

            throw new LoaderError($this->errorCache[$name]);
        }

        foreach ($this->paths[$namespace] as $path) {
            if (!$this->isAbsolutePath($path)) {
                $path = $this->rootPath.$path;
            }

            if (is_file($path.'/'.$shortname)) {
                if (false !== $realpath = realpath($path.'/'.$shortname)) {
                    return $this->cache[$name] = $realpath;
                }

                return $this->cache[$name] = $path.'/'.$shortname;
            }
        }

        $this->errorCache[$name] = sprintf('Unable to find template "%s" (looked into: %s).', $name, implode(', ', $this->paths[$namespace]));

        if (!$throw) {
            return false;
        }

        throw new LoaderError($this->errorCache[$name]);
    }

    protected function parseName($name, $default = self::MAIN_NAMESPACE)
    {
        if (isset($name[0]) && '@' == $name[0]) {
            if (false === $pos = strpos($name, '/')) {
                throw new LoaderError(sprintf('Malformed namespaced template name "%s" (expecting "@namespace/template_name").', $name));
            }

            $namespace = substr($name, 1, $pos - 1);
            $shortname = substr($name, $pos + 1);

            return [$namespace, $shortname];
        }

        return [$default, $name];
    }

    protected function normalizeName($name)
    {
        return preg_replace('#/{2,}#', '/', str_replace('\\', '/', (string) $name));
    }

    protected function validateName($name)
    {
        if (false !== strpos($name, "\0")) {
            throw new LoaderError('A template name cannot contain NUL bytes.');
        }

        $name = ltrim($name, '/');
        $parts = explode('/', $name);
        $level = 0;
        foreach ($parts as $part) {
            if ('..' === $part) {
                --$level;
            } elseif ('.' !== $part) {
                ++$level;
            }

            if ($level < 0) {
                throw new LoaderError(sprintf('Looks like you try to load a template outside configured directories (%s).', $name));
            }
        }
    }

    private function isAbsolutePath($file)
    {
        return strspn($file, '/\\', 0, 1)
            || (\strlen($file) > 3 && ctype_alpha($file[0])
                && ':' === substr($file, 1, 1)
                && strspn($file, '/\\', 2, 1)
            )
            || null !== parse_url($file, PHP_URL_SCHEME)
        ;
    }
}

class_alias('Twig\Loader\FilesystemLoader', 'Twig_Loader_Filesystem');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Loader;

use Twig\Error\LoaderError;
use Twig\Source;

/**
 * Loads a template from an array.
 *
 * When using this loader with a cache mechanism, you should know that a new cache
 * key is generated each time a template content "changes" (the cache key being the
 * source code of the template). If you don't want to see your cache grows out of
 * control, you need to take care of clearing the old cache file by yourself.
 *
 * This loader should only be used for unit testing.
 *
 * @final
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ArrayLoader implements LoaderInterface, ExistsLoaderInterface, SourceContextLoaderInterface
{
    protected $templates = [];

    /**
     * @param array $templates An array of templates (keys are the names, and values are the source code)
     */
    public function __construct(array $templates = [])
    {
        $this->templates = $templates;
    }

    /**
     * Adds or overrides a template.
     *
     * @param string $name     The template name
     * @param string $template The template source
     */
    public function setTemplate($name, $template)
    {
        $this->templates[(string) $name] = $template;
    }

    public function getSource($name)
    {
        @trigger_error(sprintf('Calling "getSource" on "%s" is deprecated since 1.27. Use getSourceContext() instead.', \get_class($this)), E_USER_DEPRECATED);

        $name = (string) $name;
        if (!isset($this->templates[$name])) {
            throw new LoaderError(sprintf('Template "%s" is not defined.', $name));
        }

        return $this->templates[$name];
    }

    public function getSourceContext($name)
    {
        $name = (string) $name;
        if (!isset($this->templates[$name])) {
            throw new LoaderError(sprintf('Template "%s" is not defined.', $name));
        }

        return new Source($this->templates[$name], $name);
    }

    public function exists($name)
    {
        return isset($this->templates[(string) $name]);
    }

    public function getCacheKey($name)
    {
        $name = (string) $name;
        if (!isset($this->templates[$name])) {
            throw new LoaderError(sprintf('Template "%s" is not defined.', $name));
        }

        return $name.':'.$this->templates[$name];
    }

    public function isFresh($name, $time)
    {
        $name = (string) $name;
        if (!isset($this->templates[$name])) {
            throw new LoaderError(sprintf('Template "%s" is not defined.', $name));
        }

        return true;
    }
}

class_alias('Twig\Loader\ArrayLoader', 'Twig_Loader_Array');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Loader;

use Twig\Error\LoaderError;

/**
 * Interface all loaders must implement.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
interface LoaderInterface
{
    /**
     * Gets the source code of a template, given its name.
     *
     * @param string $name The name of the template to load
     *
     * @return string The template source code
     *
     * @throws LoaderError When $name is not found
     *
     * @deprecated since 1.27 (to be removed in 2.0), implement Twig\Loader\SourceContextLoaderInterface
     */
    public function getSource($name);

    /**
     * Gets the cache key to use for the cache for a given template name.
     *
     * @param string $name The name of the template to load
     *
     * @return string The cache key
     *
     * @throws LoaderError When $name is not found
     */
    public function getCacheKey($name);

    /**
     * Returns true if the template is still fresh.
     *
     * @param string $name The template name
     * @param int    $time Timestamp of the last modification time of the
     *                     cached template
     *
     * @return bool true if the template is fresh, false otherwise
     *
     * @throws LoaderError When $name is not found
     */
    public function isFresh($name, $time);
}

class_alias('Twig\Loader\LoaderInterface', 'Twig_LoaderInterface');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Loader;

use Twig\Error\LoaderError;
use Twig\Source;

/**
 * Adds a getSourceContext() method for loaders.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @deprecated since 1.27 (to be removed in 3.0)
 */
interface SourceContextLoaderInterface
{
    /**
     * Returns the source context for a given template logical name.
     *
     * @param string $name The template logical name
     *
     * @return Source
     *
     * @throws LoaderError When $name is not found
     */
    public function getSourceContext($name);
}

class_alias('Twig\Loader\SourceContextLoaderInterface', 'Twig_SourceContextLoaderInterface');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Loader;

use Twig\Error\LoaderError;
use Twig\Source;

/**
 * Loads templates from other loaders.
 *
 * @final
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ChainLoader implements LoaderInterface, ExistsLoaderInterface, SourceContextLoaderInterface
{
    private $hasSourceCache = [];
    protected $loaders = [];

    /**
     * @param LoaderInterface[] $loaders
     */
    public function __construct(array $loaders = [])
    {
        foreach ($loaders as $loader) {
            $this->addLoader($loader);
        }
    }

    public function addLoader(LoaderInterface $loader)
    {
        $this->loaders[] = $loader;
        $this->hasSourceCache = [];
    }

    /**
     * @return LoaderInterface[]
     */
    public function getLoaders()
    {
        return $this->loaders;
    }

    public function getSource($name)
    {
        @trigger_error(sprintf('Calling "getSource" on "%s" is deprecated since 1.27. Use getSourceContext() instead.', \get_class($this)), E_USER_DEPRECATED);

        $exceptions = [];
        foreach ($this->loaders as $loader) {
            if ($loader instanceof ExistsLoaderInterface && !$loader->exists($name)) {
                continue;
            }

            try {
                return $loader->getSource($name);
            } catch (LoaderError $e) {
                $exceptions[] = $e->getMessage();
            }
        }

        throw new LoaderError(sprintf('Template "%s" is not defined%s.', $name, $exceptions ? ' ('.implode(', ', $exceptions).')' : ''));
    }

    public function getSourceContext($name)
    {
        $exceptions = [];
        foreach ($this->loaders as $loader) {
            if ($loader instanceof ExistsLoaderInterface && !$loader->exists($name)) {
                continue;
            }

            try {
                if ($loader instanceof SourceContextLoaderInterface) {
                    return $loader->getSourceContext($name);
                }

                return new Source($loader->getSource($name), $name);
            } catch (LoaderError $e) {
                $exceptions[] = $e->getMessage();
            }
        }

        throw new LoaderError(sprintf('Template "%s" is not defined%s.', $name, $exceptions ? ' ('.implode(', ', $exceptions).')' : ''));
    }

    public function exists($name)
    {
        $name = (string) $name;

        if (isset($this->hasSourceCache[$name])) {
            return $this->hasSourceCache[$name];
        }

        foreach ($this->loaders as $loader) {
            if ($loader instanceof ExistsLoaderInterface) {
                if ($loader->exists($name)) {
                    return $this->hasSourceCache[$name] = true;
                }

                continue;
            }

            try {
                if ($loader instanceof SourceContextLoaderInterface) {
                    $loader->getSourceContext($name);
                } else {
                    $loader->getSource($name);
                }

                return $this->hasSourceCache[$name] = true;
            } catch (LoaderError $e) {
            }
        }

        return $this->hasSourceCache[$name] = false;
    }

    public function getCacheKey($name)
    {
        $exceptions = [];
        foreach ($this->loaders as $loader) {
            if ($loader instanceof ExistsLoaderInterface && !$loader->exists($name)) {
                continue;
            }

            try {
                return $loader->getCacheKey($name);
            } catch (LoaderError $e) {
                $exceptions[] = \get_class($loader).': '.$e->getMessage();
            }
        }

        throw new LoaderError(sprintf('Template "%s" is not defined%s.', $name, $exceptions ? ' ('.implode(', ', $exceptions).')' : ''));
    }

    public function isFresh($name, $time)
    {
        $exceptions = [];
        foreach ($this->loaders as $loader) {
            if ($loader instanceof ExistsLoaderInterface && !$loader->exists($name)) {
                continue;
            }

            try {
                return $loader->isFresh($name, $time);
            } catch (LoaderError $e) {
                $exceptions[] = \get_class($loader).': '.$e->getMessage();
            }
        }

        throw new LoaderError(sprintf('Template "%s" is not defined%s.', $name, $exceptions ? ' ('.implode(', ', $exceptions).')' : ''));
    }
}

class_alias('Twig\Loader\ChainLoader', 'Twig_Loader_Chain');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Loader;

/**
 * Adds an exists() method for loaders.
 *
 * @author Florin Patan <florinpatan@gmail.com>
 *
 * @deprecated since 1.12 (to be removed in 3.0)
 */
interface ExistsLoaderInterface
{
    /**
     * Check if we have the source code of a template, given its name.
     *
     * @param string $name The name of the template to check if we can load
     *
     * @return bool If the template source code is handled by this loader or not
     */
    public function exists($name);
}

class_alias('Twig\Loader\ExistsLoaderInterface', 'Twig_ExistsLoaderInterface');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig;

use Twig\Error\SyntaxError;

/**
 * Lexes a template string.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class Lexer implements \Twig_LexerInterface
{
    protected $tokens;
    protected $code;
    protected $cursor;
    protected $lineno;
    protected $end;
    protected $state;
    protected $states;
    protected $brackets;
    protected $env;
    // to be renamed to $name in 2.0 (where it is private)
    protected $filename;
    protected $options;
    protected $regexes;
    protected $position;
    protected $positions;
    protected $currentVarBlockLine;

    private $source;

    const STATE_DATA = 0;
    const STATE_BLOCK = 1;
    const STATE_VAR = 2;
    const STATE_STRING = 3;
    const STATE_INTERPOLATION = 4;

    const REGEX_NAME = '/[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*/A';
    const REGEX_NUMBER = '/[0-9]+(?:\.[0-9]+)?/A';
    const REGEX_STRING = '/"([^#"\\\\]*(?:\\\\.[^#"\\\\]*)*)"|\'([^\'\\\\]*(?:\\\\.[^\'\\\\]*)*)\'/As';
    const REGEX_DQ_STRING_DELIM = '/"/A';
    const REGEX_DQ_STRING_PART = '/[^#"\\\\]*(?:(?:\\\\.|#(?!\{))[^#"\\\\]*)*/As';
    const PUNCTUATION = '()[]{}?:.,|';

    public function __construct(Environment $env, array $options = [])
    {
        $this->env = $env;

        $this->options = array_merge([
            'tag_comment' => ['{#', '#}'],
            'tag_block' => ['{%', '%}'],
            'tag_variable' => ['{{', '}}'],
            'whitespace_trim' => '-',
            'whitespace_line_trim' => '~',
            'whitespace_line_chars' => ' \t\0\x0B',
            'interpolation' => ['#{', '}'],
        ], $options);

        // when PHP 7.3 is the min version, we will be able to remove the '#' part in preg_quote as it's part of the default
        $this->regexes = [
            // }}
            'lex_var' => '{
                \s*
                (?:'.
                    preg_quote($this->options['whitespace_trim'].$this->options['tag_variable'][1], '#').'\s*'. // -}}\s*
                    '|'.
                    preg_quote($this->options['whitespace_line_trim'].$this->options['tag_variable'][1], '#').'['.$this->options['whitespace_line_chars'].']*'. // ~}}[ \t\0\x0B]*
                    '|'.
                    preg_quote($this->options['tag_variable'][1], '#'). // }}
                ')
            }Ax',

            // %}
            'lex_block' => '{
                \s*
                (?:'.
                    preg_quote($this->options['whitespace_trim'].$this->options['tag_block'][1], '#').'\s*\n?'. // -%}\s*\n?
                    '|'.
                    preg_quote($this->options['whitespace_line_trim'].$this->options['tag_block'][1], '#').'['.$this->options['whitespace_line_chars'].']*'. // ~%}[ \t\0\x0B]*
                    '|'.
                    preg_quote($this->options['tag_block'][1], '#').'\n?'. // %}\n?
                ')
            }Ax',

            // {% endverbatim %}
            'lex_raw_data' => '{'.
                preg_quote($this->options['tag_block'][0], '#'). // {%
                '('.
                    $this->options['whitespace_trim']. // -
                    '|'.
                    $this->options['whitespace_line_trim']. // ~
                ')?\s*'.
                '(?:end%s)'. // endraw or endverbatim
                '\s*'.
                '(?:'.
                    preg_quote($this->options['whitespace_trim'].$this->options['tag_block'][1], '#').'\s*'. // -%}
                    '|'.
                    preg_quote($this->options['whitespace_line_trim'].$this->options['tag_block'][1], '#').'['.$this->options['whitespace_line_chars'].']*'. // ~%}[ \t\0\x0B]*
                    '|'.
                    preg_quote($this->options['tag_block'][1], '#'). // %}
                ')
            }sx',

            'operator' => $this->getOperatorRegex(),

            // #}
            'lex_comment' => '{
                (?:'.
                    preg_quote($this->options['whitespace_trim']).preg_quote($this->options['tag_comment'][1], '#').'\s*\n?'. // -#}\s*\n?
                    '|'.
                    preg_quote($this->options['whitespace_line_trim'].$this->options['tag_comment'][1], '#').'['.$this->options['whitespace_line_chars'].']*'. // ~#}[ \t\0\x0B]*
                    '|'.
                    preg_quote($this->options['tag_comment'][1], '#').'\n?'. // #}\n?
                ')
            }sx',

            // verbatim %}
            'lex_block_raw' => '{
                \s*
                (raw|verbatim)
                \s*
                (?:'.
                    preg_quote($this->options['whitespace_trim'].$this->options['tag_block'][1], '#').'\s*'. // -%}\s*
                    '|'.
                    preg_quote($this->options['whitespace_line_trim'].$this->options['tag_block'][1], '#').'['.$this->options['whitespace_line_chars'].']*'. // ~%}[ \t\0\x0B]*
                    '|'.
                    preg_quote($this->options['tag_block'][1], '#'). // %}
                ')
            }Asx',

            'lex_block_line' => '{\s*line\s+(\d+)\s*'.preg_quote($this->options['tag_block'][1], '#').'}As',

            // {{ or {% or {#
            'lex_tokens_start' => '{
                ('.
                    preg_quote($this->options['tag_variable'][0], '#'). // {{
                    '|'.
                    preg_quote($this->options['tag_block'][0], '#'). // {%
                    '|'.
                    preg_quote($this->options['tag_comment'][0], '#'). // {#
                ')('.
                    preg_quote($this->options['whitespace_trim'], '#'). // -
                    '|'.
                    preg_quote($this->options['whitespace_line_trim'], '#'). // ~
                ')?
            }sx',
            'interpolation_start' => '{'.preg_quote($this->options['interpolation'][0], '#').'\s*}A',
            'interpolation_end' => '{\s*'.preg_quote($this->options['interpolation'][1], '#').'}A',
        ];
    }

    public function tokenize($code, $name = null)
    {
        if (!$code instanceof Source) {
            @trigger_error(sprintf('Passing a string as the $code argument of %s() is deprecated since version 1.27 and will be removed in 2.0. Pass a \Twig\Source instance instead.', __METHOD__), E_USER_DEPRECATED);
            $this->source = new Source($code, $name);
        } else {
            $this->source = $code;
        }

        if (((int) ini_get('mbstring.func_overload')) & 2) {
            @trigger_error('Support for having "mbstring.func_overload" different from 0 is deprecated version 1.29 and will be removed in 2.0.', E_USER_DEPRECATED);
        }

        if (\function_exists('mb_internal_encoding') && ((int) ini_get('mbstring.func_overload')) & 2) {
            $mbEncoding = mb_internal_encoding();
            mb_internal_encoding('ASCII');
        } else {
            $mbEncoding = null;
        }

        $this->code = str_replace(["\r\n", "\r"], "\n", $this->source->getCode());
        $this->filename = $this->source->getName();
        $this->cursor = 0;
        $this->lineno = 1;
        $this->end = \strlen($this->code);
        $this->tokens = [];
        $this->state = self::STATE_DATA;
        $this->states = [];
        $this->brackets = [];
        $this->position = -1;

        // find all token starts in one go
        preg_match_all($this->regexes['lex_tokens_start'], $this->code, $matches, PREG_OFFSET_CAPTURE);
        $this->positions = $matches;

        while ($this->cursor < $this->end) {
            // dispatch to the lexing functions depending
            // on the current state
            switch ($this->state) {
                case self::STATE_DATA:
                    $this->lexData();
                    break;

                case self::STATE_BLOCK:
                    $this->lexBlock();
                    break;

                case self::STATE_VAR:
                    $this->lexVar();
                    break;

                case self::STATE_STRING:
                    $this->lexString();
                    break;

                case self::STATE_INTERPOLATION:
                    $this->lexInterpolation();
                    break;
            }
        }

        $this->pushToken(Token::EOF_TYPE);

        if (!empty($this->brackets)) {
            list($expect, $lineno) = array_pop($this->brackets);
            throw new SyntaxError(sprintf('Unclosed "%s".', $expect), $lineno, $this->source);
        }

        if ($mbEncoding) {
            mb_internal_encoding($mbEncoding);
        }

        return new TokenStream($this->tokens, $this->source);
    }

    protected function lexData()
    {
        // if no matches are left we return the rest of the template as simple text token
        if ($this->position == \count($this->positions[0]) - 1) {
            $this->pushToken(Token::TEXT_TYPE, substr($this->code, $this->cursor));
            $this->cursor = $this->end;

            return;
        }

        // Find the first token after the current cursor
        $position = $this->positions[0][++$this->position];
        while ($position[1] < $this->cursor) {
            if ($this->position == \count($this->positions[0]) - 1) {
                return;
            }
            $position = $this->positions[0][++$this->position];
        }

        // push the template text first
        $text = $textContent = substr($this->code, $this->cursor, $position[1] - $this->cursor);

        // trim?
        if (isset($this->positions[2][$this->position][0])) {
            if ($this->options['whitespace_trim'] === $this->positions[2][$this->position][0]) {
                // whitespace_trim detected ({%-, {{- or {#-)
                $text = rtrim($text);
            } elseif ($this->options['whitespace_line_trim'] === $this->positions[2][$this->position][0]) {
                // whitespace_line_trim detected ({%~, {{~ or {#~)
                // don't trim \r and \n
                $text = rtrim($text, " \t\0\x0B");
            }
        }
        $this->pushToken(Token::TEXT_TYPE, $text);
        $this->moveCursor($textContent.$position[0]);

        switch ($this->positions[1][$this->position][0]) {
            case $this->options['tag_comment'][0]:
                $this->lexComment();
                break;

            case $this->options['tag_block'][0]:
                // raw data?
                if (preg_match($this->regexes['lex_block_raw'], $this->code, $match, 0, $this->cursor)) {
                    $this->moveCursor($match[0]);
                    $this->lexRawData($match[1]);
                // {% line \d+ %}
                } elseif (preg_match($this->regexes['lex_block_line'], $this->code, $match, 0, $this->cursor)) {
                    $this->moveCursor($match[0]);
                    $this->lineno = (int) $match[1];
                } else {
                    $this->pushToken(Token::BLOCK_START_TYPE);
                    $this->pushState(self::STATE_BLOCK);
                    $this->currentVarBlockLine = $this->lineno;
                }
                break;

            case $this->options['tag_variable'][0]:
                $this->pushToken(Token::VAR_START_TYPE);
                $this->pushState(self::STATE_VAR);
                $this->currentVarBlockLine = $this->lineno;
                break;
        }
    }

    protected function lexBlock()
    {
        if (empty($this->brackets) && preg_match($this->regexes['lex_block'], $this->code, $match, 0, $this->cursor)) {
            $this->pushToken(Token::BLOCK_END_TYPE);
            $this->moveCursor($match[0]);
            $this->popState();
        } else {
            $this->lexExpression();
        }
    }

    protected function lexVar()
    {
        if (empty($this->brackets) && preg_match($this->regexes['lex_var'], $this->code, $match, 0, $this->cursor)) {
            $this->pushToken(Token::VAR_END_TYPE);
            $this->moveCursor($match[0]);
            $this->popState();
        } else {
            $this->lexExpression();
        }
    }

    protected function lexExpression()
    {
        // whitespace
        if (preg_match('/\s+/A', $this->code, $match, 0, $this->cursor)) {
            $this->moveCursor($match[0]);

            if ($this->cursor >= $this->end) {
                throw new SyntaxError(sprintf('Unclosed "%s".', self::STATE_BLOCK === $this->state ? 'block' : 'variable'), $this->currentVarBlockLine, $this->source);
            }
        }

        // arrow function
        if ('=' === $this->code[$this->cursor] && '>' === $this->code[$this->cursor + 1]) {
            $this->pushToken(Token::ARROW_TYPE, '=>');
            $this->moveCursor('=>');
        }
        // operators
        elseif (preg_match($this->regexes['operator'], $this->code, $match, 0, $this->cursor)) {
            $this->pushToken(Token::OPERATOR_TYPE, preg_replace('/\s+/', ' ', $match[0]));
            $this->moveCursor($match[0]);
        }
        // names
        elseif (preg_match(self::REGEX_NAME, $this->code, $match, 0, $this->cursor)) {
            $this->pushToken(Token::NAME_TYPE, $match[0]);
            $this->moveCursor($match[0]);
        }
        // numbers
        elseif (preg_match(self::REGEX_NUMBER, $this->code, $match, 0, $this->cursor)) {
            $number = (float) $match[0];  // floats
            if (ctype_digit($match[0]) && $number <= PHP_INT_MAX) {
                $number = (int) $match[0]; // integers lower than the maximum
            }
            $this->pushToken(Token::NUMBER_TYPE, $number);
            $this->moveCursor($match[0]);
        }
        // punctuation
        elseif (false !== strpos(self::PUNCTUATION, $this->code[$this->cursor])) {
            // opening bracket
            if (false !== strpos('([{', $this->code[$this->cursor])) {
                $this->brackets[] = [$this->code[$this->cursor], $this->lineno];
            }
            // closing bracket
            elseif (false !== strpos(')]}', $this->code[$this->cursor])) {
                if (empty($this->brackets)) {
                    throw new SyntaxError(sprintf('Unexpected "%s".', $this->code[$this->cursor]), $this->lineno, $this->source);
                }

                list($expect, $lineno) = array_pop($this->brackets);
                if ($this->code[$this->cursor] != strtr($expect, '([{', ')]}')) {
                    throw new SyntaxError(sprintf('Unclosed "%s".', $expect), $lineno, $this->source);
                }
            }

            $this->pushToken(Token::PUNCTUATION_TYPE, $this->code[$this->cursor]);
            ++$this->cursor;
        }
        // strings
        elseif (preg_match(self::REGEX_STRING, $this->code, $match, 0, $this->cursor)) {
            $this->pushToken(Token::STRING_TYPE, stripcslashes(substr($match[0], 1, -1)));
            $this->moveCursor($match[0]);
        }
        // opening double quoted string
        elseif (preg_match(self::REGEX_DQ_STRING_DELIM, $this->code, $match, 0, $this->cursor)) {
            $this->brackets[] = ['"', $this->lineno];
            $this->pushState(self::STATE_STRING);
            $this->moveCursor($match[0]);
        }
        // unlexable
        else {
            throw new SyntaxError(sprintf('Unexpected character "%s".', $this->code[$this->cursor]), $this->lineno, $this->source);
        }
    }

    protected function lexRawData($tag)
    {
        if ('raw' === $tag) {
            @trigger_error(sprintf('Twig Tag "raw" is deprecated since version 1.21. Use "verbatim" instead in %s at line %d.', $this->filename, $this->lineno), E_USER_DEPRECATED);
        }

        if (!preg_match(str_replace('%s', $tag, $this->regexes['lex_raw_data']), $this->code, $match, PREG_OFFSET_CAPTURE, $this->cursor)) {
            throw new SyntaxError(sprintf('Unexpected end of file: Unclosed "%s" block.', $tag), $this->lineno, $this->source);
        }

        $text = substr($this->code, $this->cursor, $match[0][1] - $this->cursor);
        $this->moveCursor($text.$match[0][0]);

        // trim?
        if (isset($match[1][0])) {
            if ($this->options['whitespace_trim'] === $match[1][0]) {
                // whitespace_trim detected ({%-, {{- or {#-)
                $text = rtrim($text);
            } else {
                // whitespace_line_trim detected ({%~, {{~ or {#~)
                // don't trim \r and \n
                $text = rtrim($text, " \t\0\x0B");
            }
        }

        $this->pushToken(Token::TEXT_TYPE, $text);
    }

    protected function lexComment()
    {
        if (!preg_match($this->regexes['lex_comment'], $this->code, $match, PREG_OFFSET_CAPTURE, $this->cursor)) {
            throw new SyntaxError('Unclosed comment.', $this->lineno, $this->source);
        }

        $this->moveCursor(substr($this->code, $this->cursor, $match[0][1] - $this->cursor).$match[0][0]);
    }

    protected function lexString()
    {
        if (preg_match($this->regexes['interpolation_start'], $this->code, $match, 0, $this->cursor)) {
            $this->brackets[] = [$this->options['interpolation'][0], $this->lineno];
            $this->pushToken(Token::INTERPOLATION_START_TYPE);
            $this->moveCursor($match[0]);
            $this->pushState(self::STATE_INTERPOLATION);
        } elseif (preg_match(self::REGEX_DQ_STRING_PART, $this->code, $match, 0, $this->cursor) && \strlen($match[0]) > 0) {
            $this->pushToken(Token::STRING_TYPE, stripcslashes($match[0]));
            $this->moveCursor($match[0]);
        } elseif (preg_match(self::REGEX_DQ_STRING_DELIM, $this->code, $match, 0, $this->cursor)) {
            list($expect, $lineno) = array_pop($this->brackets);
            if ('"' != $this->code[$this->cursor]) {
                throw new SyntaxError(sprintf('Unclosed "%s".', $expect), $lineno, $this->source);
            }

            $this->popState();
            ++$this->cursor;
        } else {
            // unlexable
            throw new SyntaxError(sprintf('Unexpected character "%s".', $this->code[$this->cursor]), $this->lineno, $this->source);
        }
    }

    protected function lexInterpolation()
    {
        $bracket = end($this->brackets);
        if ($this->options['interpolation'][0] === $bracket[0] && preg_match($this->regexes['interpolation_end'], $this->code, $match, 0, $this->cursor)) {
            array_pop($this->brackets);
            $this->pushToken(Token::INTERPOLATION_END_TYPE);
            $this->moveCursor($match[0]);
            $this->popState();
        } else {
            $this->lexExpression();
        }
    }

    protected function pushToken($type, $value = '')
    {
        // do not push empty text tokens
        if (Token::TEXT_TYPE === $type && '' === $value) {
            return;
        }

        $this->tokens[] = new Token($type, $value, $this->lineno);
    }

    protected function moveCursor($text)
    {
        $this->cursor += \strlen($text);
        $this->lineno += substr_count($text, "\n");
    }

    protected function getOperatorRegex()
    {
        $operators = array_merge(
            ['='],
            array_keys($this->env->getUnaryOperators()),
            array_keys($this->env->getBinaryOperators())
        );

        $operators = array_combine($operators, array_map('strlen', $operators));
        arsort($operators);

        $regex = [];
        foreach ($operators as $operator => $length) {
            // an operator that ends with a character must be followed by
            // a whitespace or a parenthesis
            if (ctype_alpha($operator[$length - 1])) {
                $r = preg_quote($operator, '/').'(?=[\s()])';
            } else {
                $r = preg_quote($operator, '/');
            }

            // an operator with a space can be any amount of whitespaces
            $r = preg_replace('/\s+/', '\s+', $r);

            $regex[] = $r;
        }

        return '/'.implode('|', $regex).'/A';
    }

    protected function pushState($state)
    {
        $this->states[] = $this->state;
        $this->state = $state;
    }

    protected function popState()
    {
        if (0 === \count($this->states)) {
            throw new \LogicException('Cannot pop state without a previous state.');
        }

        $this->state = array_pop($this->states);
    }
}

class_alias('Twig\Lexer', 'Twig_Lexer');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Profiler\NodeVisitor;

use Twig\Environment;
use Twig\Node\BlockNode;
use Twig\Node\BodyNode;
use Twig\Node\MacroNode;
use Twig\Node\ModuleNode;
use Twig\Node\Node;
use Twig\NodeVisitor\AbstractNodeVisitor;
use Twig\Profiler\Node\EnterProfileNode;
use Twig\Profiler\Node\LeaveProfileNode;
use Twig\Profiler\Profile;

/**
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @final
 */
class ProfilerNodeVisitor extends AbstractNodeVisitor
{
    private $extensionName;

    public function __construct($extensionName)
    {
        $this->extensionName = $extensionName;
    }

    protected function doEnterNode(Node $node, Environment $env)
    {
        return $node;
    }

    protected function doLeaveNode(Node $node, Environment $env)
    {
        if ($node instanceof ModuleNode) {
            $varName = $this->getVarName();
            $node->setNode('display_start', new Node([new EnterProfileNode($this->extensionName, Profile::TEMPLATE, $node->getTemplateName(), $varName), $node->getNode('display_start')]));
            $node->setNode('display_end', new Node([new LeaveProfileNode($varName), $node->getNode('display_end')]));
        } elseif ($node instanceof BlockNode) {
            $varName = $this->getVarName();
            $node->setNode('body', new BodyNode([
                new EnterProfileNode($this->extensionName, Profile::BLOCK, $node->getAttribute('name'), $varName),
                $node->getNode('body'),
                new LeaveProfileNode($varName),
            ]));
        } elseif ($node instanceof MacroNode) {
            $varName = $this->getVarName();
            $node->setNode('body', new BodyNode([
                new EnterProfileNode($this->extensionName, Profile::MACRO, $node->getAttribute('name'), $varName),
                $node->getNode('body'),
                new LeaveProfileNode($varName),
            ]));
        }

        return $node;
    }

    private function getVarName()
    {
        return sprintf('__internal_%s', hash('sha256', $this->extensionName));
    }

    public function getPriority()
    {
        return 0;
    }
}

class_alias('Twig\Profiler\NodeVisitor\ProfilerNodeVisitor', 'Twig_Profiler_NodeVisitor_Profiler');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Profiler;

/**
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @final
 */
class Profile implements \IteratorAggregate, \Serializable
{
    const ROOT = 'ROOT';
    const BLOCK = 'block';
    const TEMPLATE = 'template';
    const MACRO = 'macro';

    private $template;
    private $name;
    private $type;
    private $starts = [];
    private $ends = [];
    private $profiles = [];

    public function __construct($template = 'main', $type = self::ROOT, $name = 'main')
    {
        $this->template = $template;
        $this->type = $type;
        $this->name = 0 === strpos($name, '__internal_') ? 'INTERNAL' : $name;
        $this->enter();
    }

    public function getTemplate()
    {
        return $this->template;
    }

    public function getType()
    {
        return $this->type;
    }

    public function getName()
    {
        return $this->name;
    }

    public function isRoot()
    {
        return self::ROOT === $this->type;
    }

    public function isTemplate()
    {
        return self::TEMPLATE === $this->type;
    }

    public function isBlock()
    {
        return self::BLOCK === $this->type;
    }

    public function isMacro()
    {
        return self::MACRO === $this->type;
    }

    public function getProfiles()
    {
        return $this->profiles;
    }

    public function addProfile(self $profile)
    {
        $this->profiles[] = $profile;
    }

    /**
     * Returns the duration in microseconds.
     *
     * @return float
     */
    public function getDuration()
    {
        if ($this->isRoot() && $this->profiles) {
            // for the root node with children, duration is the sum of all child durations
            $duration = 0;
            foreach ($this->profiles as $profile) {
                $duration += $profile->getDuration();
            }

            return $duration;
        }

        return isset($this->ends['wt']) && isset($this->starts['wt']) ? $this->ends['wt'] - $this->starts['wt'] : 0;
    }

    /**
     * Returns the memory usage in bytes.
     *
     * @return int
     */
    public function getMemoryUsage()
    {
        return isset($this->ends['mu']) && isset($this->starts['mu']) ? $this->ends['mu'] - $this->starts['mu'] : 0;
    }

    /**
     * Returns the peak memory usage in bytes.
     *
     * @return int
     */
    public function getPeakMemoryUsage()
    {
        return isset($this->ends['pmu']) && isset($this->starts['pmu']) ? $this->ends['pmu'] - $this->starts['pmu'] : 0;
    }

    /**
     * Starts the profiling.
     */
    public function enter()
    {
        $this->starts = [
            'wt' => microtime(true),
            'mu' => memory_get_usage(),
            'pmu' => memory_get_peak_usage(),
        ];
    }

    /**
     * Stops the profiling.
     */
    public function leave()
    {
        $this->ends = [
            'wt' => microtime(true),
            'mu' => memory_get_usage(),
            'pmu' => memory_get_peak_usage(),
        ];
    }

    public function reset()
    {
        $this->starts = $this->ends = $this->profiles = [];
        $this->enter();
    }

    public function getIterator()
    {
        return new \ArrayIterator($this->profiles);
    }

    public function serialize()
    {
        return serialize($this->__serialize());
    }

    public function unserialize($data)
    {
        $this->__unserialize(unserialize($data));
    }

    /**
     * @internal
     */
    public function __serialize()
    {
        return [$this->template, $this->name, $this->type, $this->starts, $this->ends, $this->profiles];
    }

    /**
     * @internal
     */
    public function __unserialize(array $data)
    {
        list($this->template, $this->name, $this->type, $this->starts, $this->ends, $this->profiles) = $data;
    }
}

class_alias('Twig\Profiler\Profile', 'Twig_Profiler_Profile');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Profiler\Node;

use Twig\Compiler;
use Twig\Node\Node;

/**
 * Represents a profile enter node.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class EnterProfileNode extends Node
{
    public function __construct($extensionName, $type, $name, $varName)
    {
        parent::__construct([], ['extension_name' => $extensionName, 'name' => $name, 'type' => $type, 'var_name' => $varName]);
    }

    public function compile(Compiler $compiler)
    {
        $compiler
            ->write(sprintf('$%s = $this->env->getExtension(', $this->getAttribute('var_name')))
            ->repr($this->getAttribute('extension_name'))
            ->raw(");\n")
            ->write(sprintf('$%s->enter($%s = new \Twig\Profiler\Profile($this->getTemplateName(), ', $this->getAttribute('var_name'), $this->getAttribute('var_name').'_prof'))
            ->repr($this->getAttribute('type'))
            ->raw(', ')
            ->repr($this->getAttribute('name'))
            ->raw("));\n\n")
        ;
    }
}

class_alias('Twig\Profiler\Node\EnterProfileNode', 'Twig_Profiler_Node_EnterProfile');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Profiler\Node;

use Twig\Compiler;
use Twig\Node\Node;

/**
 * Represents a profile leave node.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class LeaveProfileNode extends Node
{
    public function __construct($varName)
    {
        parent::__construct([], ['var_name' => $varName]);
    }

    public function compile(Compiler $compiler)
    {
        $compiler
            ->write("\n")
            ->write(sprintf("\$%s->leave(\$%s);\n\n", $this->getAttribute('var_name'), $this->getAttribute('var_name').'_prof'))
        ;
    }
}

class_alias('Twig\Profiler\Node\LeaveProfileNode', 'Twig_Profiler_Node_LeaveProfile');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Profiler\Dumper;

use Twig\Profiler\Profile;

/**
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @final
 */
class BlackfireDumper
{
    public function dump(Profile $profile)
    {
        $data = [];
        $this->dumpProfile('main()', $profile, $data);
        $this->dumpChildren('main()', $profile, $data);

        $start = sprintf('%f', microtime(true));
        $str = <<<EOF
file-format: BlackfireProbe
cost-dimensions: wt mu pmu
request-start: {$start}


EOF;

        foreach ($data as $name => $values) {
            $str .= "{$name}//{$values['ct']} {$values['wt']} {$values['mu']} {$values['pmu']}\n";
        }

        return $str;
    }

    private function dumpChildren($parent, Profile $profile, &$data)
    {
        foreach ($profile as $p) {
            if ($p->isTemplate()) {
                $name = $p->getTemplate();
            } else {
                $name = sprintf('%s::%s(%s)', $p->getTemplate(), $p->getType(), $p->getName());
            }
            $this->dumpProfile(sprintf('%s==>%s', $parent, $name), $p, $data);
            $this->dumpChildren($name, $p, $data);
        }
    }

    private function dumpProfile($edge, Profile $profile, &$data)
    {
        if (isset($data[$edge])) {
            ++$data[$edge]['ct'];
            $data[$edge]['wt'] += floor($profile->getDuration() * 1000000);
            $data[$edge]['mu'] += $profile->getMemoryUsage();
            $data[$edge]['pmu'] += $profile->getPeakMemoryUsage();
        } else {
            $data[$edge] = [
                'ct' => 1,
                'wt' => floor($profile->getDuration() * 1000000),
                'mu' => $profile->getMemoryUsage(),
                'pmu' => $profile->getPeakMemoryUsage(),
            ];
        }
    }
}

class_alias('Twig\Profiler\Dumper\BlackfireDumper', 'Twig_Profiler_Dumper_Blackfire');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Profiler\Dumper;

use Twig\Profiler\Profile;

/**
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @final
 */
class TextDumper extends BaseDumper
{
    protected function formatTemplate(Profile $profile, $prefix)
    {
        return sprintf('%sâ”” %s', $prefix, $profile->getTemplate());
    }

    protected function formatNonTemplate(Profile $profile, $prefix)
    {
        return sprintf('%sâ”” %s::%s(%s)', $prefix, $profile->getTemplate(), $profile->getType(), $profile->getName());
    }

    protected function formatTime(Profile $profile, $percent)
    {
        return sprintf('%.2fms/%.0f%%', $profile->getDuration() * 1000, $percent);
    }
}

class_alias('Twig\Profiler\Dumper\TextDumper', 'Twig_Profiler_Dumper_Text');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Profiler\Dumper;

use Twig\Profiler\Profile;

/**
 * @author Fabien Potencier <fabien@symfony.com>
 */
abstract class BaseDumper
{
    private $root;

    public function dump(Profile $profile)
    {
        return $this->dumpProfile($profile);
    }

    abstract protected function formatTemplate(Profile $profile, $prefix);

    abstract protected function formatNonTemplate(Profile $profile, $prefix);

    abstract protected function formatTime(Profile $profile, $percent);

    private function dumpProfile(Profile $profile, $prefix = '', $sibling = false)
    {
        if ($profile->isRoot()) {
            $this->root = $profile->getDuration();
            $start = $profile->getName();
        } else {
            if ($profile->isTemplate()) {
                $start = $this->formatTemplate($profile, $prefix);
            } else {
                $start = $this->formatNonTemplate($profile, $prefix);
            }
            $prefix .= $sibling ? 'â”‚ ' : '  ';
        }

        $percent = $this->root ? $profile->getDuration() / $this->root * 100 : 0;

        if ($profile->getDuration() * 1000 < 1) {
            $str = $start."\n";
        } else {
            $str = sprintf("%s %s\n", $start, $this->formatTime($profile, $percent));
        }

        $nCount = \count($profile->getProfiles());
        foreach ($profile as $i => $p) {
            $str .= $this->dumpProfile($p, $prefix, $i + 1 !== $nCount);
        }

        return $str;
    }
}

class_alias('Twig\Profiler\Dumper\BaseDumper', 'Twig_Profiler_Dumper_Base');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Profiler\Dumper;

use Twig\Profiler\Profile;

/**
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @final
 */
class HtmlDumper extends BaseDumper
{
    private static $colors = [
        'block' => '#dfd',
        'macro' => '#ddf',
        'template' => '#ffd',
        'big' => '#d44',
    ];

    public function dump(Profile $profile)
    {
        return '<pre>'.parent::dump($profile).'</pre>';
    }

    protected function formatTemplate(Profile $profile, $prefix)
    {
        return sprintf('%sâ”” <span style="background-color: %s">%s</span>', $prefix, self::$colors['template'], $profile->getTemplate());
    }

    protected function formatNonTemplate(Profile $profile, $prefix)
    {
        return sprintf('%sâ”” %s::%s(<span style="background-color: %s">%s</span>)', $prefix, $profile->getTemplate(), $profile->getType(), isset(self::$colors[$profile->getType()]) ? self::$colors[$profile->getType()] : 'auto', $profile->getName());
    }

    protected function formatTime(Profile $profile, $percent)
    {
        return sprintf('<span style="color: %s">%.2fms/%.0f%%</span>', $percent > 20 ? self::$colors['big'] : 'auto', $profile->getDuration() * 1000, $percent);
    }
}

class_alias('Twig\Profiler\Dumper\HtmlDumper', 'Twig_Profiler_Dumper_Html');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\TokenParser;

use Twig\Node\DeprecatedNode;
use Twig\Token;

/**
 * Deprecates a section of a template.
 *
 *    {% deprecated 'The "base.twig" template is deprecated, use "layout.twig" instead.' %}
 *    {% extends 'layout.html.twig' %}
 *
 * @author Yonel Ceruto <yonelceruto@gmail.com>
 *
 * @final
 */
class DeprecatedTokenParser extends AbstractTokenParser
{
    public function parse(Token $token)
    {
        $expr = $this->parser->getExpressionParser()->parseExpression();

        $this->parser->getStream()->expect(Token::BLOCK_END_TYPE);

        return new DeprecatedNode($expr, $token->getLine(), $this->getTag());
    }

    public function getTag()
    {
        return 'deprecated';
    }
}

class_alias('Twig\TokenParser\DeprecatedTokenParser', 'Twig_TokenParser_Deprecated');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\TokenParser;

use Twig\Error\SyntaxError;
use Twig\Node\Expression\AssignNameExpression;
use Twig\Node\Expression\ConstantExpression;
use Twig\Node\Expression\GetAttrExpression;
use Twig\Node\Expression\NameExpression;
use Twig\Node\ForNode;
use Twig\Token;
use Twig\TokenStream;

/**
 * Loops over each item of a sequence.
 *
 *   <ul>
 *    {% for user in users %}
 *      <li>{{ user.username|e }}</li>
 *    {% endfor %}
 *   </ul>
 *
 * @final
 */
class ForTokenParser extends AbstractTokenParser
{
    public function parse(Token $token)
    {
        $lineno = $token->getLine();
        $stream = $this->parser->getStream();
        $targets = $this->parser->getExpressionParser()->parseAssignmentExpression();
        $stream->expect(Token::OPERATOR_TYPE, 'in');
        $seq = $this->parser->getExpressionParser()->parseExpression();

        $ifexpr = null;
        if ($stream->nextIf(Token::NAME_TYPE, 'if')) {
            $ifexpr = $this->parser->getExpressionParser()->parseExpression();
        }

        $stream->expect(Token::BLOCK_END_TYPE);
        $body = $this->parser->subparse([$this, 'decideForFork']);
        if ('else' == $stream->next()->getValue()) {
            $stream->expect(Token::BLOCK_END_TYPE);
            $else = $this->parser->subparse([$this, 'decideForEnd'], true);
        } else {
            $else = null;
        }
        $stream->expect(Token::BLOCK_END_TYPE);

        if (\count($targets) > 1) {
            $keyTarget = $targets->getNode(0);
            $keyTarget = new AssignNameExpression($keyTarget->getAttribute('name'), $keyTarget->getTemplateLine());
            $valueTarget = $targets->getNode(1);
            $valueTarget = new AssignNameExpression($valueTarget->getAttribute('name'), $valueTarget->getTemplateLine());
        } else {
            $keyTarget = new AssignNameExpression('_key', $lineno);
            $valueTarget = $targets->getNode(0);
            $valueTarget = new AssignNameExpression($valueTarget->getAttribute('name'), $valueTarget->getTemplateLine());
        }

        if ($ifexpr) {
            $this->checkLoopUsageCondition($stream, $ifexpr);
            $this->checkLoopUsageBody($stream, $body);
        }

        return new ForNode($keyTarget, $valueTarget, $seq, $ifexpr, $body, $else, $lineno, $this->getTag());
    }

    public function decideForFork(Token $token)
    {
        return $token->test(['else', 'endfor']);
    }

    public function decideForEnd(Token $token)
    {
        return $token->test('endfor');
    }

    // the loop variable cannot be used in the condition
    protected function checkLoopUsageCondition(TokenStream $stream, \Twig_NodeInterface $node)
    {
        if ($node instanceof GetAttrExpression && $node->getNode('node') instanceof NameExpression && 'loop' == $node->getNode('node')->getAttribute('name')) {
            throw new SyntaxError('The "loop" variable cannot be used in a looping condition.', $node->getTemplateLine(), $stream->getSourceContext());
        }

        foreach ($node as $n) {
            if (!$n) {
                continue;
            }

            $this->checkLoopUsageCondition($stream, $n);
        }
    }

    // check usage of non-defined loop-items
    // it does not catch all problems (for instance when a for is included into another or when the variable is used in an include)
    protected function checkLoopUsageBody(TokenStream $stream, \Twig_NodeInterface $node)
    {
        if ($node instanceof GetAttrExpression && $node->getNode('node') instanceof NameExpression && 'loop' == $node->getNode('node')->getAttribute('name')) {
            $attribute = $node->getNode('attribute');
            if ($attribute instanceof ConstantExpression && \in_array($attribute->getAttribute('value'), ['length', 'revindex0', 'revindex', 'last'])) {
                throw new SyntaxError(sprintf('The "loop.%s" variable is not defined when looping with a condition.', $attribute->getAttribute('value')), $node->getTemplateLine(), $stream->getSourceContext());
            }
        }

        // should check for parent.loop.XXX usage
        if ($node instanceof ForNode) {
            return;
        }

        foreach ($node as $n) {
            if (!$n) {
                continue;
            }

            $this->checkLoopUsageBody($stream, $n);
        }
    }

    public function getTag()
    {
        return 'for';
    }
}

class_alias('Twig\TokenParser\ForTokenParser', 'Twig_TokenParser_For');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\TokenParser;

use Twig\Node\DoNode;
use Twig\Token;

/**
 * Evaluates an expression, discarding the returned value.
 *
 * @final
 */
class DoTokenParser extends AbstractTokenParser
{
    public function parse(Token $token)
    {
        $expr = $this->parser->getExpressionParser()->parseExpression();

        $this->parser->getStream()->expect(Token::BLOCK_END_TYPE);

        return new DoNode($expr, $token->getLine(), $this->getTag());
    }

    public function getTag()
    {
        return 'do';
    }
}

class_alias('Twig\TokenParser\DoTokenParser', 'Twig_TokenParser_Do');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\TokenParser;

use Twig\Error\SyntaxError;
use Twig\Node\Expression\AssignNameExpression;
use Twig\Node\ImportNode;
use Twig\Token;

/**
 * Imports macros.
 *
 *   {% from 'forms.html' import forms %}
 *
 * @final
 */
class FromTokenParser extends AbstractTokenParser
{
    public function parse(Token $token)
    {
        $macro = $this->parser->getExpressionParser()->parseExpression();
        $stream = $this->parser->getStream();
        $stream->expect(Token::NAME_TYPE, 'import');

        $targets = [];
        do {
            $name = $stream->expect(Token::NAME_TYPE)->getValue();

            $alias = $name;
            if ($stream->nextIf('as')) {
                $alias = $stream->expect(Token::NAME_TYPE)->getValue();
            }

            $targets[$name] = $alias;

            if (!$stream->nextIf(Token::PUNCTUATION_TYPE, ',')) {
                break;
            }
        } while (true);

        $stream->expect(Token::BLOCK_END_TYPE);

        $var = new AssignNameExpression($this->parser->getVarName(), $token->getLine());
        $node = new ImportNode($macro, $var, $token->getLine(), $this->getTag());

        foreach ($targets as $name => $alias) {
            if ($this->parser->isReservedMacroName($name)) {
                throw new SyntaxError(sprintf('"%s" cannot be an imported macro as it is a reserved keyword.', $name), $token->getLine(), $stream->getSourceContext());
            }

            $this->parser->addImportedSymbol('function', $alias, 'get'.$name, $var);
        }

        return $node;
    }

    public function getTag()
    {
        return 'from';
    }
}

class_alias('Twig\TokenParser\FromTokenParser', 'Twig_TokenParser_From');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\TokenParser;

use Twig\Parser;

/**
 * Base class for all token parsers.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
abstract class AbstractTokenParser implements TokenParserInterface
{
    /**
     * @var Parser
     */
    protected $parser;

    public function setParser(Parser $parser)
    {
        $this->parser = $parser;
    }
}

class_alias('Twig\TokenParser\AbstractTokenParser', 'Twig_TokenParser');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\TokenParser;

use Twig\Error\SyntaxError;
use Twig\Node\IncludeNode;
use Twig\Node\SandboxNode;
use Twig\Node\TextNode;
use Twig\Token;

/**
 * Marks a section of a template as untrusted code that must be evaluated in the sandbox mode.
 *
 *    {% sandbox %}
 *        {% include 'user.html' %}
 *    {% endsandbox %}
 *
 * @see https://twig.symfony.com/doc/api.html#sandbox-extension for details
 *
 * @final
 */
class SandboxTokenParser extends AbstractTokenParser
{
    public function parse(Token $token)
    {
        $stream = $this->parser->getStream();
        $stream->expect(Token::BLOCK_END_TYPE);
        $body = $this->parser->subparse([$this, 'decideBlockEnd'], true);
        $stream->expect(Token::BLOCK_END_TYPE);

        // in a sandbox tag, only include tags are allowed
        if (!$body instanceof IncludeNode) {
            foreach ($body as $node) {
                if ($node instanceof TextNode && ctype_space($node->getAttribute('data'))) {
                    continue;
                }

                if (!$node instanceof IncludeNode) {
                    throw new SyntaxError('Only "include" tags are allowed within a "sandbox" section.', $node->getTemplateLine(), $stream->getSourceContext());
                }
            }
        }

        return new SandboxNode($body, $token->getLine(), $this->getTag());
    }

    public function decideBlockEnd(Token $token)
    {
        return $token->test('endsandbox');
    }

    public function getTag()
    {
        return 'sandbox';
    }
}

class_alias('Twig\TokenParser\SandboxTokenParser', 'Twig_TokenParser_Sandbox');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\TokenParser;

use Twig\Error\SyntaxError;
use Twig\Node\Expression\ConstantExpression;
use Twig\Node\Node;
use Twig\Token;

/**
 * Imports blocks defined in another template into the current template.
 *
 *    {% extends "base.html" %}
 *
 *    {% use "blocks.html" %}
 *
 *    {% block title %}{% endblock %}
 *    {% block content %}{% endblock %}
 *
 * @see https://twig.symfony.com/doc/templates.html#horizontal-reuse for details.
 *
 * @final
 */
class UseTokenParser extends AbstractTokenParser
{
    public function parse(Token $token)
    {
        $template = $this->parser->getExpressionParser()->parseExpression();
        $stream = $this->parser->getStream();

        if (!$template instanceof ConstantExpression) {
            throw new SyntaxError('The template references in a "use" statement must be a string.', $stream->getCurrent()->getLine(), $stream->getSourceContext());
        }

        $targets = [];
        if ($stream->nextIf('with')) {
            do {
                $name = $stream->expect(Token::NAME_TYPE)->getValue();

                $alias = $name;
                if ($stream->nextIf('as')) {
                    $alias = $stream->expect(Token::NAME_TYPE)->getValue();
                }

                $targets[$name] = new ConstantExpression($alias, -1);

                if (!$stream->nextIf(Token::PUNCTUATION_TYPE, ',')) {
                    break;
                }
            } while (true);
        }

        $stream->expect(Token::BLOCK_END_TYPE);

        $this->parser->addTrait(new Node(['template' => $template, 'targets' => new Node($targets)]));

        return new Node();
    }

    public function getTag()
    {
        return 'use';
    }
}

class_alias('Twig\TokenParser\UseTokenParser', 'Twig_TokenParser_Use');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\TokenParser;

use Twig\Error\SyntaxError;
use Twig\Node\AutoEscapeNode;
use Twig\Node\Expression\ConstantExpression;
use Twig\Token;

/**
 * Marks a section of a template to be escaped or not.
 *
 *   {% autoescape true %}
 *     Everything will be automatically escaped in this block
 *   {% endautoescape %}
 *
 *   {% autoescape false %}
 *     Everything will be outputed as is in this block
 *   {% endautoescape %}
 *
 *   {% autoescape true js %}
 *     Everything will be automatically escaped in this block
 *     using the js escaping strategy
 *   {% endautoescape %}
 *
 * @final
 */
class AutoEscapeTokenParser extends AbstractTokenParser
{
    public function parse(Token $token)
    {
        $lineno = $token->getLine();
        $stream = $this->parser->getStream();

        if ($stream->test(Token::BLOCK_END_TYPE)) {
            $value = 'html';
        } else {
            $expr = $this->parser->getExpressionParser()->parseExpression();
            if (!$expr instanceof ConstantExpression) {
                throw new SyntaxError('An escaping strategy must be a string or a bool.', $stream->getCurrent()->getLine(), $stream->getSourceContext());
            }
            $value = $expr->getAttribute('value');

            $compat = true === $value || false === $value;

            if (true === $value) {
                $value = 'html';
            }

            if ($compat && $stream->test(Token::NAME_TYPE)) {
                @trigger_error('Using the autoescape tag with "true" or "false" before the strategy name is deprecated since version 1.21.', E_USER_DEPRECATED);

                if (false === $value) {
                    throw new SyntaxError('Unexpected escaping strategy as you set autoescaping to false.', $stream->getCurrent()->getLine(), $stream->getSourceContext());
                }

                $value = $stream->next()->getValue();
            }
        }

        $stream->expect(Token::BLOCK_END_TYPE);
        $body = $this->parser->subparse([$this, 'decideBlockEnd'], true);
        $stream->expect(Token::BLOCK_END_TYPE);

        return new AutoEscapeNode($value, $body, $lineno, $this->getTag());
    }

    public function decideBlockEnd(Token $token)
    {
        return $token->test('endautoescape');
    }

    public function getTag()
    {
        return 'autoescape';
    }
}

class_alias('Twig\TokenParser\AutoEscapeTokenParser', 'Twig_TokenParser_AutoEscape');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\TokenParser;

use Twig\Node\IncludeNode;
use Twig\Token;

/**
 * Includes a template.
 *
 *   {% include 'header.html' %}
 *     Body
 *   {% include 'footer.html' %}
 */
class IncludeTokenParser extends AbstractTokenParser
{
    public function parse(Token $token)
    {
        $expr = $this->parser->getExpressionParser()->parseExpression();

        list($variables, $only, $ignoreMissing) = $this->parseArguments();

        return new IncludeNode($expr, $variables, $only, $ignoreMissing, $token->getLine(), $this->getTag());
    }

    protected function parseArguments()
    {
        $stream = $this->parser->getStream();

        $ignoreMissing = false;
        if ($stream->nextIf(Token::NAME_TYPE, 'ignore')) {
            $stream->expect(Token::NAME_TYPE, 'missing');

            $ignoreMissing = true;
        }

        $variables = null;
        if ($stream->nextIf(Token::NAME_TYPE, 'with')) {
            $variables = $this->parser->getExpressionParser()->parseExpression();
        }

        $only = false;
        if ($stream->nextIf(Token::NAME_TYPE, 'only')) {
            $only = true;
        }

        $stream->expect(Token::BLOCK_END_TYPE);

        return [$variables, $only, $ignoreMissing];
    }

    public function getTag()
    {
        return 'include';
    }
}

class_alias('Twig\TokenParser\IncludeTokenParser', 'Twig_TokenParser_Include');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\TokenParser;

use Twig\Node\SpacelessNode;
use Twig\Token;

/**
 * Remove whitespaces between HTML tags.
 *
 *   {% spaceless %}
 *      <div>
 *          <strong>foo</strong>
 *      </div>
 *   {% endspaceless %}
 *   {# output will be <div><strong>foo</strong></div> #}
 *
 * @final
 */
class SpacelessTokenParser extends AbstractTokenParser
{
    public function parse(Token $token)
    {
        $lineno = $token->getLine();

        $this->parser->getStream()->expect(Token::BLOCK_END_TYPE);
        $body = $this->parser->subparse([$this, 'decideSpacelessEnd'], true);
        $this->parser->getStream()->expect(Token::BLOCK_END_TYPE);

        return new SpacelessNode($body, $lineno, $this->getTag());
    }

    public function decideSpacelessEnd(Token $token)
    {
        return $token->test('endspaceless');
    }

    public function getTag()
    {
        return 'spaceless';
    }
}

class_alias('Twig\TokenParser\SpacelessTokenParser', 'Twig_TokenParser_Spaceless');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\TokenParser;

use Twig\Error\SyntaxError;
use Twig\Parser;
use Twig\Token;

/**
 * Interface implemented by token parsers.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
interface TokenParserInterface
{
    /**
     * Sets the parser associated with this token parser.
     */
    public function setParser(Parser $parser);

    /**
     * Parses a token and returns a node.
     *
     * @return \Twig_NodeInterface
     *
     * @throws SyntaxError
     */
    public function parse(Token $token);

    /**
     * Gets the tag name associated with this token parser.
     *
     * @return string The tag name
     */
    public function getTag();
}

class_alias('Twig\TokenParser\TokenParserInterface', 'Twig_TokenParserInterface');

// Ensure that the aliased name is loaded to keep BC for classes implementing the typehint with the old aliased name.
class_exists('Twig\Token');
class_exists('Twig\Parser');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\TokenParser;

use Twig\Node\Expression\TempNameExpression;
use Twig\Node\Node;
use Twig\Node\PrintNode;
use Twig\Node\SetNode;
use Twig\Token;

/**
 * Applies filters on a section of a template.
 *
 *   {% apply upper %}
 *      This text becomes uppercase
 *   {% endapplys %}
 */
final class ApplyTokenParser extends AbstractTokenParser
{
    public function parse(Token $token)
    {
        $lineno = $token->getLine();
        $name = $this->parser->getVarName();

        $ref = new TempNameExpression($name, $lineno);
        $ref->setAttribute('always_defined', true);

        $filter = $this->parser->getExpressionParser()->parseFilterExpressionRaw($ref, $this->getTag());

        $this->parser->getStream()->expect(Token::BLOCK_END_TYPE);
        $body = $this->parser->subparse([$this, 'decideApplyEnd'], true);
        $this->parser->getStream()->expect(Token::BLOCK_END_TYPE);

        return new Node([
            new SetNode(true, $ref, $body, $lineno, $this->getTag()),
            new PrintNode($filter, $lineno, $this->getTag()),
        ]);
    }

    public function decideApplyEnd(Token $token)
    {
        return $token->test('endapply');
    }

    public function getTag()
    {
        return 'apply';
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\TokenParser;

use Twig\Node\BlockNode;
use Twig\Node\Expression\BlockReferenceExpression;
use Twig\Node\Expression\ConstantExpression;
use Twig\Node\PrintNode;
use Twig\Token;

/**
 * Filters a section of a template by applying filters.
 *
 *   {% filter upper %}
 *      This text becomes uppercase
 *   {% endfilter %}
 *
 * @final
 */
class FilterTokenParser extends AbstractTokenParser
{
    public function parse(Token $token)
    {
        $name = $this->parser->getVarName();
        $ref = new BlockReferenceExpression(new ConstantExpression($name, $token->getLine()), null, $token->getLine(), $this->getTag());

        $filter = $this->parser->getExpressionParser()->parseFilterExpressionRaw($ref, $this->getTag());
        $this->parser->getStream()->expect(Token::BLOCK_END_TYPE);

        $body = $this->parser->subparse([$this, 'decideBlockEnd'], true);
        $this->parser->getStream()->expect(Token::BLOCK_END_TYPE);

        $block = new BlockNode($name, $body, $token->getLine());
        $this->parser->setBlock($name, $block);

        return new PrintNode($filter, $token->getLine(), $this->getTag());
    }

    public function decideBlockEnd(Token $token)
    {
        return $token->test('endfilter');
    }

    public function getTag()
    {
        return 'filter';
    }
}

class_alias('Twig\TokenParser\FilterTokenParser', 'Twig_TokenParser_Filter');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\TokenParser;

use Twig\Error\SyntaxError;
use Twig\Node\SetNode;
use Twig\Token;

/**
 * Defines a variable.
 *
 *  {% set foo = 'foo' %}
 *  {% set foo = [1, 2] %}
 *  {% set foo = {'foo': 'bar'} %}
 *  {% set foo = 'foo' ~ 'bar' %}
 *  {% set foo, bar = 'foo', 'bar' %}
 *  {% set foo %}Some content{% endset %}
 *
 * @final
 */
class SetTokenParser extends AbstractTokenParser
{
    public function parse(Token $token)
    {
        $lineno = $token->getLine();
        $stream = $this->parser->getStream();
        $names = $this->parser->getExpressionParser()->parseAssignmentExpression();

        $capture = false;
        if ($stream->nextIf(Token::OPERATOR_TYPE, '=')) {
            $values = $this->parser->getExpressionParser()->parseMultitargetExpression();

            $stream->expect(Token::BLOCK_END_TYPE);

            if (\count($names) !== \count($values)) {
                throw new SyntaxError('When using set, you must have the same number of variables and assignments.', $stream->getCurrent()->getLine(), $stream->getSourceContext());
            }
        } else {
            $capture = true;

            if (\count($names) > 1) {
                throw new SyntaxError('When using set with a block, you cannot have a multi-target.', $stream->getCurrent()->getLine(), $stream->getSourceContext());
            }

            $stream->expect(Token::BLOCK_END_TYPE);

            $values = $this->parser->subparse([$this, 'decideBlockEnd'], true);
            $stream->expect(Token::BLOCK_END_TYPE);
        }

        return new SetNode($capture, $names, $values, $lineno, $this->getTag());
    }

    public function decideBlockEnd(Token $token)
    {
        return $token->test('endset');
    }

    public function getTag()
    {
        return 'set';
    }
}

class_alias('Twig\TokenParser\SetTokenParser', 'Twig_TokenParser_Set');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\TokenParser;

use Twig\Node\EmbedNode;
use Twig\Node\Expression\ConstantExpression;
use Twig\Node\Expression\NameExpression;
use Twig\Token;

/**
 * Embeds a template.
 *
 * @final
 */
class EmbedTokenParser extends IncludeTokenParser
{
    public function parse(Token $token)
    {
        $stream = $this->parser->getStream();

        $parent = $this->parser->getExpressionParser()->parseExpression();

        list($variables, $only, $ignoreMissing) = $this->parseArguments();

        $parentToken = $fakeParentToken = new Token(Token::STRING_TYPE, '__parent__', $token->getLine());
        if ($parent instanceof ConstantExpression) {
            $parentToken = new Token(Token::STRING_TYPE, $parent->getAttribute('value'), $token->getLine());
        } elseif ($parent instanceof NameExpression) {
            $parentToken = new Token(Token::NAME_TYPE, $parent->getAttribute('name'), $token->getLine());
        }

        // inject a fake parent to make the parent() function work
        $stream->injectTokens([
            new Token(Token::BLOCK_START_TYPE, '', $token->getLine()),
            new Token(Token::NAME_TYPE, 'extends', $token->getLine()),
            $parentToken,
            new Token(Token::BLOCK_END_TYPE, '', $token->getLine()),
        ]);

        $module = $this->parser->parse($stream, [$this, 'decideBlockEnd'], true);

        // override the parent with the correct one
        if ($fakeParentToken === $parentToken) {
            $module->setNode('parent', $parent);
        }

        $this->parser->embedTemplate($module);

        $stream->expect(Token::BLOCK_END_TYPE);

        return new EmbedNode($module->getTemplateName(), $module->getAttribute('index'), $variables, $only, $ignoreMissing, $token->getLine(), $this->getTag());
    }

    public function decideBlockEnd(Token $token)
    {
        return $token->test('endembed');
    }

    public function getTag()
    {
        return 'embed';
    }
}

class_alias('Twig\TokenParser\EmbedTokenParser', 'Twig_TokenParser_Embed');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\TokenParser;

use Twig\Node\FlushNode;
use Twig\Token;

/**
 * Flushes the output to the client.
 *
 * @see flush()
 *
 * @final
 */
class FlushTokenParser extends AbstractTokenParser
{
    public function parse(Token $token)
    {
        $this->parser->getStream()->expect(Token::BLOCK_END_TYPE);

        return new FlushNode($token->getLine(), $this->getTag());
    }

    public function getTag()
    {
        return 'flush';
    }
}

class_alias('Twig\TokenParser\FlushTokenParser', 'Twig_TokenParser_Flush');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\TokenParser;

use Twig\Node\WithNode;
use Twig\Token;

/**
 * Creates a nested scope.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @final
 */
class WithTokenParser extends AbstractTokenParser
{
    public function parse(Token $token)
    {
        $stream = $this->parser->getStream();

        $variables = null;
        $only = false;
        if (!$stream->test(Token::BLOCK_END_TYPE)) {
            $variables = $this->parser->getExpressionParser()->parseExpression();
            $only = $stream->nextIf(Token::NAME_TYPE, 'only');
        }

        $stream->expect(Token::BLOCK_END_TYPE);

        $body = $this->parser->subparse([$this, 'decideWithEnd'], true);

        $stream->expect(Token::BLOCK_END_TYPE);

        return new WithNode($body, $variables, $only, $token->getLine(), $this->getTag());
    }

    public function decideWithEnd(Token $token)
    {
        return $token->test('endwith');
    }

    public function getTag()
    {
        return 'with';
    }
}

class_alias('Twig\TokenParser\WithTokenParser', 'Twig_TokenParser_With');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\TokenParser;

use Twig\Node\Expression\AssignNameExpression;
use Twig\Node\ImportNode;
use Twig\Token;

/**
 * Imports macros.
 *
 *   {% import 'forms.html' as forms %}
 *
 * @final
 */
class ImportTokenParser extends AbstractTokenParser
{
    public function parse(Token $token)
    {
        $macro = $this->parser->getExpressionParser()->parseExpression();
        $this->parser->getStream()->expect(Token::NAME_TYPE, 'as');
        $var = new AssignNameExpression($this->parser->getStream()->expect(Token::NAME_TYPE)->getValue(), $token->getLine());
        $this->parser->getStream()->expect(Token::BLOCK_END_TYPE);

        $this->parser->addImportedSymbol('template', $var->getAttribute('name'));

        return new ImportNode($macro, $var, $token->getLine(), $this->getTag());
    }

    public function getTag()
    {
        return 'import';
    }
}

class_alias('Twig\TokenParser\ImportTokenParser', 'Twig_TokenParser_Import');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\TokenParser;

use Twig\Error\SyntaxError;
use Twig\Node\BlockNode;
use Twig\Node\BlockReferenceNode;
use Twig\Node\Node;
use Twig\Node\PrintNode;
use Twig\Token;

/**
 * Marks a section of a template as being reusable.
 *
 *  {% block head %}
 *    <link rel="stylesheet" href="style.css" />
 *    <title>{% block title %}{% endblock %} - My Webpage</title>
 *  {% endblock %}
 *
 * @final
 */
class BlockTokenParser extends AbstractTokenParser
{
    public function parse(Token $token)
    {
        $lineno = $token->getLine();
        $stream = $this->parser->getStream();
        $name = $stream->expect(Token::NAME_TYPE)->getValue();
        if ($this->parser->hasBlock($name)) {
            throw new SyntaxError(sprintf("The block '%s' has already been defined line %d.", $name, $this->parser->getBlock($name)->getTemplateLine()), $stream->getCurrent()->getLine(), $stream->getSourceContext());
        }
        $this->parser->setBlock($name, $block = new BlockNode($name, new Node([]), $lineno));
        $this->parser->pushLocalScope();
        $this->parser->pushBlockStack($name);

        if ($stream->nextIf(Token::BLOCK_END_TYPE)) {
            $body = $this->parser->subparse([$this, 'decideBlockEnd'], true);
            if ($token = $stream->nextIf(Token::NAME_TYPE)) {
                $value = $token->getValue();

                if ($value != $name) {
                    throw new SyntaxError(sprintf('Expected endblock for block "%s" (but "%s" given).', $name, $value), $stream->getCurrent()->getLine(), $stream->getSourceContext());
                }
            }
        } else {
            $body = new Node([
                new PrintNode($this->parser->getExpressionParser()->parseExpression(), $lineno),
            ]);
        }
        $stream->expect(Token::BLOCK_END_TYPE);

        $block->setNode('body', $body);
        $this->parser->popBlockStack();
        $this->parser->popLocalScope();

        return new BlockReferenceNode($name, $lineno, $this->getTag());
    }

    public function decideBlockEnd(Token $token)
    {
        return $token->test('endblock');
    }

    public function getTag()
    {
        return 'block';
    }
}

class_alias('Twig\TokenParser\BlockTokenParser', 'Twig_TokenParser_Block');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\TokenParser;

use Twig\Error\SyntaxError;
use Twig\Node\Node;
use Twig\Token;

/**
 * Extends a template by another one.
 *
 *  {% extends "base.html" %}
 *
 * @final
 */
class ExtendsTokenParser extends AbstractTokenParser
{
    public function parse(Token $token)
    {
        $stream = $this->parser->getStream();

        if ($this->parser->peekBlockStack()) {
            throw new SyntaxError('Cannot use "extend" in a block.', $token->getLine(), $stream->getSourceContext());
        } elseif (!$this->parser->isMainScope()) {
            throw new SyntaxError('Cannot use "extend" in a macro.', $token->getLine(), $stream->getSourceContext());
        }

        if (null !== $this->parser->getParent()) {
            throw new SyntaxError('Multiple extends tags are forbidden.', $token->getLine(), $stream->getSourceContext());
        }
        $this->parser->setParent($this->parser->getExpressionParser()->parseExpression());

        $stream->expect(Token::BLOCK_END_TYPE);

        return new Node();
    }

    public function getTag()
    {
        return 'extends';
    }
}

class_alias('Twig\TokenParser\ExtendsTokenParser', 'Twig_TokenParser_Extends');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\TokenParser;

use Twig\Error\SyntaxError;
use Twig\Node\IfNode;
use Twig\Node\Node;
use Twig\Token;

/**
 * Tests a condition.
 *
 *   {% if users %}
 *    <ul>
 *      {% for user in users %}
 *        <li>{{ user.username|e }}</li>
 *      {% endfor %}
 *    </ul>
 *   {% endif %}
 *
 * @final
 */
class IfTokenParser extends AbstractTokenParser
{
    public function parse(Token $token)
    {
        $lineno = $token->getLine();
        $expr = $this->parser->getExpressionParser()->parseExpression();
        $stream = $this->parser->getStream();
        $stream->expect(Token::BLOCK_END_TYPE);
        $body = $this->parser->subparse([$this, 'decideIfFork']);
        $tests = [$expr, $body];
        $else = null;

        $end = false;
        while (!$end) {
            switch ($stream->next()->getValue()) {
                case 'else':
                    $stream->expect(Token::BLOCK_END_TYPE);
                    $else = $this->parser->subparse([$this, 'decideIfEnd']);
                    break;

                case 'elseif':
                    $expr = $this->parser->getExpressionParser()->parseExpression();
                    $stream->expect(Token::BLOCK_END_TYPE);
                    $body = $this->parser->subparse([$this, 'decideIfFork']);
                    $tests[] = $expr;
                    $tests[] = $body;
                    break;

                case 'endif':
                    $end = true;
                    break;

                default:
                    throw new SyntaxError(sprintf('Unexpected end of template. Twig was looking for the following tags "else", "elseif", or "endif" to close the "if" block started at line %d).', $lineno), $stream->getCurrent()->getLine(), $stream->getSourceContext());
            }
        }

        $stream->expect(Token::BLOCK_END_TYPE);

        return new IfNode(new Node($tests), $else, $lineno, $this->getTag());
    }

    public function decideIfFork(Token $token)
    {
        return $token->test(['elseif', 'else', 'endif']);
    }

    public function decideIfEnd(Token $token)
    {
        return $token->test(['endif']);
    }

    public function getTag()
    {
        return 'if';
    }
}

class_alias('Twig\TokenParser\IfTokenParser', 'Twig_TokenParser_If');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\TokenParser;

use Twig\Error\SyntaxError;
use Twig\Node\BodyNode;
use Twig\Node\MacroNode;
use Twig\Node\Node;
use Twig\Token;

/**
 * Defines a macro.
 *
 *   {% macro input(name, value, type, size) %}
 *      <input type="{{ type|default('text') }}" name="{{ name }}" value="{{ value|e }}" size="{{ size|default(20) }}" />
 *   {% endmacro %}
 *
 * @final
 */
class MacroTokenParser extends AbstractTokenParser
{
    public function parse(Token $token)
    {
        $lineno = $token->getLine();
        $stream = $this->parser->getStream();
        $name = $stream->expect(Token::NAME_TYPE)->getValue();

        $arguments = $this->parser->getExpressionParser()->parseArguments(true, true);

        $stream->expect(Token::BLOCK_END_TYPE);
        $this->parser->pushLocalScope();
        $body = $this->parser->subparse([$this, 'decideBlockEnd'], true);
        if ($token = $stream->nextIf(Token::NAME_TYPE)) {
            $value = $token->getValue();

            if ($value != $name) {
                throw new SyntaxError(sprintf('Expected endmacro for macro "%s" (but "%s" given).', $name, $value), $stream->getCurrent()->getLine(), $stream->getSourceContext());
            }
        }
        $this->parser->popLocalScope();
        $stream->expect(Token::BLOCK_END_TYPE);

        $this->parser->setMacro($name, new MacroNode($name, new BodyNode([$body]), $arguments, $lineno, $this->getTag()));

        return new Node();
    }

    public function decideBlockEnd(Token $token)
    {
        return $token->test('endmacro');
    }

    public function getTag()
    {
        return 'macro';
    }
}

class_alias('Twig\TokenParser\MacroTokenParser', 'Twig_TokenParser_Macro');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig;

/**
 * Default autoescaping strategy based on file names.
 *
 * This strategy sets the HTML as the default autoescaping strategy,
 * but changes it based on the template name.
 *
 * Note that there is no runtime performance impact as the
 * default autoescaping strategy is set at compilation time.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class FileExtensionEscapingStrategy
{
    /**
     * Guesses the best autoescaping strategy based on the file name.
     *
     * @param string $name The template name
     *
     * @return string|false The escaping strategy name to use or false to disable
     */
    public static function guess($name)
    {
        if (\in_array(substr($name, -1), ['/', '\\'])) {
            return 'html'; // return html for directories
        }

        if ('.twig' === substr($name, -5)) {
            $name = substr($name, 0, -5);
        }

        $extension = pathinfo($name, PATHINFO_EXTENSION);

        switch ($extension) {
            case 'js':
                return 'js';

            case 'css':
                return 'css';

            case 'txt':
                return false;

            default:
                return 'html';
        }
    }
}

class_alias('Twig\FileExtensionEscapingStrategy', 'Twig_FileExtensionEscapingStrategy');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig;

/**
 * Holds information about a non-compiled Twig template.
 *
 * @final
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class Source
{
    private $code;
    private $name;
    private $path;

    /**
     * @param string $code The template source code
     * @param string $name The template logical name
     * @param string $path The filesystem path of the template if any
     */
    public function __construct($code, $name, $path = '')
    {
        $this->code = $code;
        $this->name = $name;
        $this->path = $path;
    }

    public function getCode()
    {
        return $this->code;
    }

    public function getName()
    {
        return $this->name;
    }

    public function getPath()
    {
        return $this->path;
    }
}

class_alias('Twig\Source', 'Twig_Source');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;

/**
 * Represents a sandbox node.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class SandboxNode extends Node
{
    public function __construct(\Twig_NodeInterface $body, $lineno, $tag = null)
    {
        parent::__construct(['body' => $body], [], $lineno, $tag);
    }

    public function compile(Compiler $compiler)
    {
        $compiler
            ->addDebugInfo($this)
            ->write("if (!\$alreadySandboxed = \$this->sandbox->isSandboxed()) {\n")
            ->indent()
            ->write("\$this->sandbox->enableSandbox();\n")
            ->outdent()
            ->write("}\n")
            ->subcompile($this->getNode('body'))
            ->write("if (!\$alreadySandboxed) {\n")
            ->indent()
            ->write("\$this->sandbox->disableSandbox();\n")
            ->outdent()
            ->write("}\n")
        ;
    }
}

class_alias('Twig\Node\SandboxNode', 'Twig_Node_Sandbox');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;
use Twig\Node\Expression\AbstractExpression;

/**
 * Represents an include node.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class IncludeNode extends Node implements NodeOutputInterface
{
    public function __construct(AbstractExpression $expr, AbstractExpression $variables = null, $only = false, $ignoreMissing = false, $lineno, $tag = null)
    {
        $nodes = ['expr' => $expr];
        if (null !== $variables) {
            $nodes['variables'] = $variables;
        }

        parent::__construct($nodes, ['only' => (bool) $only, 'ignore_missing' => (bool) $ignoreMissing], $lineno, $tag);
    }

    public function compile(Compiler $compiler)
    {
        $compiler->addDebugInfo($this);

        if ($this->getAttribute('ignore_missing')) {
            $template = $compiler->getVarName();

            $compiler
                ->write(sprintf("$%s = null;\n", $template))
                ->write("try {\n")
                ->indent()
                ->write(sprintf('$%s = ', $template))
            ;

            $this->addGetTemplate($compiler);

            $compiler
                ->raw(";\n")
                ->outdent()
                ->write("} catch (LoaderError \$e) {\n")
                ->indent()
                ->write("// ignore missing template\n")
                ->outdent()
                ->write("}\n")
                ->write(sprintf("if ($%s) {\n", $template))
                ->indent()
                ->write(sprintf('$%s->display(', $template))
            ;
            $this->addTemplateArguments($compiler);
            $compiler
                ->raw(");\n")
                ->outdent()
                ->write("}\n")
            ;
        } else {
            $this->addGetTemplate($compiler);
            $compiler->raw('->display(');
            $this->addTemplateArguments($compiler);
            $compiler->raw(");\n");
        }
    }

    protected function addGetTemplate(Compiler $compiler)
    {
        $compiler
            ->write('$this->loadTemplate(')
            ->subcompile($this->getNode('expr'))
            ->raw(', ')
            ->repr($this->getTemplateName())
            ->raw(', ')
            ->repr($this->getTemplateLine())
            ->raw(')')
        ;
    }

    protected function addTemplateArguments(Compiler $compiler)
    {
        if (!$this->hasNode('variables')) {
            $compiler->raw(false === $this->getAttribute('only') ? '$context' : '[]');
        } elseif (false === $this->getAttribute('only')) {
            $compiler
                ->raw('twig_array_merge($context, ')
                ->subcompile($this->getNode('variables'))
                ->raw(')')
            ;
        } else {
            $compiler->raw('twig_to_array(');
            $compiler->subcompile($this->getNode('variables'));
            $compiler->raw(')');
        }
    }
}

class_alias('Twig\Node\IncludeNode', 'Twig_Node_Include');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

/**
 * Represents a displayable node in the AST.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
interface NodeOutputInterface
{
}

class_alias('Twig\Node\NodeOutputInterface', 'Twig_NodeOutputInterface');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;
use Twig\Node\Expression\AbstractExpression;
use Twig\Node\Expression\AssignNameExpression;

/**
 * Represents a for node.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ForNode extends Node
{
    protected $loop;

    public function __construct(AssignNameExpression $keyTarget, AssignNameExpression $valueTarget, AbstractExpression $seq, AbstractExpression $ifexpr = null, \Twig_NodeInterface $body, \Twig_NodeInterface $else = null, $lineno, $tag = null)
    {
        $body = new Node([$body, $this->loop = new ForLoopNode($lineno, $tag)]);

        if (null !== $ifexpr) {
            $body = new IfNode(new Node([$ifexpr, $body]), null, $lineno, $tag);
        }

        $nodes = ['key_target' => $keyTarget, 'value_target' => $valueTarget, 'seq' => $seq, 'body' => $body];
        if (null !== $else) {
            $nodes['else'] = $else;
        }

        parent::__construct($nodes, ['with_loop' => true, 'ifexpr' => null !== $ifexpr], $lineno, $tag);
    }

    public function compile(Compiler $compiler)
    {
        $compiler
            ->addDebugInfo($this)
            ->write("\$context['_parent'] = \$context;\n")
            ->write("\$context['_seq'] = twig_ensure_traversable(")
            ->subcompile($this->getNode('seq'))
            ->raw(");\n")
        ;

        if ($this->hasNode('else')) {
            $compiler->write("\$context['_iterated'] = false;\n");
        }

        if ($this->getAttribute('with_loop')) {
            $compiler
                ->write("\$context['loop'] = [\n")
                ->write("  'parent' => \$context['_parent'],\n")
                ->write("  'index0' => 0,\n")
                ->write("  'index'  => 1,\n")
                ->write("  'first'  => true,\n")
                ->write("];\n")
            ;

            if (!$this->getAttribute('ifexpr')) {
                $compiler
                    ->write("if (is_array(\$context['_seq']) || (is_object(\$context['_seq']) && \$context['_seq'] instanceof \Countable)) {\n")
                    ->indent()
                    ->write("\$length = count(\$context['_seq']);\n")
                    ->write("\$context['loop']['revindex0'] = \$length - 1;\n")
                    ->write("\$context['loop']['revindex'] = \$length;\n")
                    ->write("\$context['loop']['length'] = \$length;\n")
                    ->write("\$context['loop']['last'] = 1 === \$length;\n")
                    ->outdent()
                    ->write("}\n")
                ;
            }
        }

        $this->loop->setAttribute('else', $this->hasNode('else'));
        $this->loop->setAttribute('with_loop', $this->getAttribute('with_loop'));
        $this->loop->setAttribute('ifexpr', $this->getAttribute('ifexpr'));

        $compiler
            ->write("foreach (\$context['_seq'] as ")
            ->subcompile($this->getNode('key_target'))
            ->raw(' => ')
            ->subcompile($this->getNode('value_target'))
            ->raw(") {\n")
            ->indent()
            ->subcompile($this->getNode('body'))
            ->outdent()
            ->write("}\n")
        ;

        if ($this->hasNode('else')) {
            $compiler
                ->write("if (!\$context['_iterated']) {\n")
                ->indent()
                ->subcompile($this->getNode('else'))
                ->outdent()
                ->write("}\n")
            ;
        }

        $compiler->write("\$_parent = \$context['_parent'];\n");

        // remove some "private" loop variables (needed for nested loops)
        $compiler->write('unset($context[\'_seq\'], $context[\'_iterated\'], $context[\''.$this->getNode('key_target')->getAttribute('name').'\'], $context[\''.$this->getNode('value_target')->getAttribute('name').'\'], $context[\'_parent\'], $context[\'loop\']);'."\n");

        // keep the values set in the inner context for variables defined in the outer context
        $compiler->write("\$context = array_intersect_key(\$context, \$_parent) + \$_parent;\n");
    }
}

class_alias('Twig\Node\ForNode', 'Twig_Node_For');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;

/**
 * @author Fabien Potencier <fabien@symfony.com>
 */
class CheckSecurityNode extends Node
{
    protected $usedFilters;
    protected $usedTags;
    protected $usedFunctions;

    public function __construct(array $usedFilters, array $usedTags, array $usedFunctions)
    {
        $this->usedFilters = $usedFilters;
        $this->usedTags = $usedTags;
        $this->usedFunctions = $usedFunctions;

        parent::__construct();
    }

    public function compile(Compiler $compiler)
    {
        $tags = $filters = $functions = [];
        foreach (['tags', 'filters', 'functions'] as $type) {
            foreach ($this->{'used'.ucfirst($type)} as $name => $node) {
                if ($node instanceof Node) {
                    ${$type}[$name] = $node->getTemplateLine();
                } else {
                    ${$type}[$node] = null;
                }
            }
        }

        $compiler
            ->write("\$this->sandbox = \$this->env->getExtension('\Twig\Extension\SandboxExtension');\n")
            ->write('$tags = ')->repr(array_filter($tags))->raw(";\n")
            ->write('$filters = ')->repr(array_filter($filters))->raw(";\n")
            ->write('$functions = ')->repr(array_filter($functions))->raw(";\n\n")
            ->write("try {\n")
            ->indent()
            ->write("\$this->sandbox->checkSecurity(\n")
            ->indent()
            ->write(!$tags ? "[],\n" : "['".implode("', '", array_keys($tags))."'],\n")
            ->write(!$filters ? "[],\n" : "['".implode("', '", array_keys($filters))."'],\n")
            ->write(!$functions ? "[]\n" : "['".implode("', '", array_keys($functions))."']\n")
            ->outdent()
            ->write(");\n")
            ->outdent()
            ->write("} catch (SecurityError \$e) {\n")
            ->indent()
            ->write("\$e->setSourceContext(\$this->getSourceContext());\n\n")
            ->write("if (\$e instanceof SecurityNotAllowedTagError && isset(\$tags[\$e->getTagName()])) {\n")
            ->indent()
            ->write("\$e->setTemplateLine(\$tags[\$e->getTagName()]);\n")
            ->outdent()
            ->write("} elseif (\$e instanceof SecurityNotAllowedFilterError && isset(\$filters[\$e->getFilterName()])) {\n")
            ->indent()
            ->write("\$e->setTemplateLine(\$filters[\$e->getFilterName()]);\n")
            ->outdent()
            ->write("} elseif (\$e instanceof SecurityNotAllowedFunctionError && isset(\$functions[\$e->getFunctionName()])) {\n")
            ->indent()
            ->write("\$e->setTemplateLine(\$functions[\$e->getFunctionName()]);\n")
            ->outdent()
            ->write("}\n\n")
            ->write("throw \$e;\n")
            ->outdent()
            ->write("}\n\n")
        ;
    }
}

class_alias('Twig\Node\CheckSecurityNode', 'Twig_Node_CheckSecurity');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;
use Twig\Node\Expression\ConstantExpression;
use Twig\Node\Expression\FilterExpression;

/**
 * Adds a check for the __toString() method when the variable is an object and the sandbox is activated.
 *
 * When there is a simple Print statement, like {{ article }},
 * and if the sandbox is enabled, we need to check that the __toString()
 * method is allowed if 'article' is an object.
 *
 * Not used anymore, to be deprecated in 2.x and removed in 3.0
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class SandboxedPrintNode extends PrintNode
{
    public function compile(Compiler $compiler)
    {
        $compiler
            ->addDebugInfo($this)
            ->write('echo ')
        ;
        $expr = $this->getNode('expr');
        if ($expr instanceof ConstantExpression) {
            $compiler
                ->subcompile($expr)
                ->raw(";\n")
            ;
        } else {
            $compiler
                ->write('$this->env->getExtension(\'\Twig\Extension\SandboxExtension\')->ensureToStringAllowed(')
                ->subcompile($expr)
                ->raw(");\n")
            ;
        }
    }

    /**
     * Removes node filters.
     *
     * This is mostly needed when another visitor adds filters (like the escaper one).
     *
     * @return Node
     */
    protected function removeNodeFilter(Node $node)
    {
        if ($node instanceof FilterExpression) {
            return $this->removeNodeFilter($node->getNode('node'));
        }

        return $node;
    }
}

class_alias('Twig\Node\SandboxedPrintNode', 'Twig_Node_SandboxedPrint');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

/**
 * Represents a node that captures any nested displayable nodes.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
interface NodeCaptureInterface
{
}

class_alias('Twig\Node\NodeCaptureInterface', 'Twig_NodeCaptureInterface');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;

/**
 * Represents a block call node.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class BlockReferenceNode extends Node implements NodeOutputInterface
{
    public function __construct($name, $lineno, $tag = null)
    {
        parent::__construct([], ['name' => $name], $lineno, $tag);
    }

    public function compile(Compiler $compiler)
    {
        $compiler
            ->addDebugInfo($this)
            ->write(sprintf("\$this->displayBlock('%s', \$context, \$blocks);\n", $this->getAttribute('name')))
        ;
    }
}

class_alias('Twig\Node\BlockReferenceNode', 'Twig_Node_BlockReference');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;

/**
 * Represents a text node.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class TextNode extends Node implements NodeOutputInterface
{
    public function __construct($data, $lineno)
    {
        parent::__construct([], ['data' => $data], $lineno);
    }

    public function compile(Compiler $compiler)
    {
        $compiler
            ->addDebugInfo($this)
            ->write('echo ')
            ->string($this->getAttribute('data'))
            ->raw(";\n")
        ;
    }
}

class_alias('Twig\Node\TextNode', 'Twig_Node_Text');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

/**
 * Represents a body node.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class BodyNode extends Node
{
}

class_alias('Twig\Node\BodyNode', 'Twig_Node_Body');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;
use Twig\Error\SyntaxError;

/**
 * Represents a macro node.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class MacroNode extends Node
{
    const VARARGS_NAME = 'varargs';

    public function __construct($name, \Twig_NodeInterface $body, \Twig_NodeInterface $arguments, $lineno, $tag = null)
    {
        foreach ($arguments as $argumentName => $argument) {
            if (self::VARARGS_NAME === $argumentName) {
                throw new SyntaxError(sprintf('The argument "%s" in macro "%s" cannot be defined because the variable "%s" is reserved for arbitrary arguments.', self::VARARGS_NAME, $name, self::VARARGS_NAME), $argument->getTemplateLine(), $argument->getSourceContext());
            }
        }

        parent::__construct(['body' => $body, 'arguments' => $arguments], ['name' => $name], $lineno, $tag);
    }

    public function compile(Compiler $compiler)
    {
        $compiler
            ->addDebugInfo($this)
            ->write(sprintf('public function get%s(', $this->getAttribute('name')))
        ;

        $count = \count($this->getNode('arguments'));
        $pos = 0;
        foreach ($this->getNode('arguments') as $name => $default) {
            $compiler
                ->raw('$__'.$name.'__ = ')
                ->subcompile($default)
            ;

            if (++$pos < $count) {
                $compiler->raw(', ');
            }
        }

        if (\PHP_VERSION_ID >= 50600) {
            if ($count) {
                $compiler->raw(', ');
            }

            $compiler->raw('...$__varargs__');
        }

        $compiler
            ->raw(")\n")
            ->write("{\n")
            ->indent()
        ;

        $compiler
            ->write("\$context = \$this->env->mergeGlobals([\n")
            ->indent()
        ;

        foreach ($this->getNode('arguments') as $name => $default) {
            $compiler
                ->write('')
                ->string($name)
                ->raw(' => $__'.$name.'__')
                ->raw(",\n")
            ;
        }

        $compiler
            ->write('')
            ->string(self::VARARGS_NAME)
            ->raw(' => ')
        ;

        if (\PHP_VERSION_ID >= 50600) {
            $compiler->raw("\$__varargs__,\n");
        } else {
            $compiler
                ->raw('func_num_args() > ')
                ->repr($count)
                ->raw(' ? array_slice(func_get_args(), ')
                ->repr($count)
                ->raw(") : [],\n")
            ;
        }

        $compiler
            ->outdent()
            ->write("]);\n\n")
            ->write("\$blocks = [];\n\n")
        ;
        if ($compiler->getEnvironment()->isDebug()) {
            $compiler->write("ob_start();\n");
        } else {
            $compiler->write("ob_start(function () { return ''; });\n");
        }
        $compiler
            ->write("try {\n")
            ->indent()
            ->subcompile($this->getNode('body'))
            ->outdent()
            ->write("} catch (\Exception \$e) {\n")
            ->indent()
            ->write("ob_end_clean();\n\n")
            ->write("throw \$e;\n")
            ->outdent()
            ->write("} catch (\Throwable \$e) {\n")
            ->indent()
            ->write("ob_end_clean();\n\n")
            ->write("throw \$e;\n")
            ->outdent()
            ->write("}\n\n")
            ->write("return ('' === \$tmp = ob_get_clean()) ? '' : new Markup(\$tmp, \$this->env->getCharset());\n")
            ->outdent()
            ->write("}\n\n")
        ;
    }
}

class_alias('Twig\Node\MacroNode', 'Twig_Node_Macro');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;

/**
 * Represents a spaceless node.
 *
 * It removes spaces between HTML tags.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class SpacelessNode extends Node
{
    public function __construct(\Twig_NodeInterface $body, $lineno, $tag = 'spaceless')
    {
        parent::__construct(['body' => $body], [], $lineno, $tag);
    }

    public function compile(Compiler $compiler)
    {
        $compiler
            ->addDebugInfo($this)
        ;
        if ($compiler->getEnvironment()->isDebug()) {
            $compiler->write("ob_start();\n");
        } else {
            $compiler->write("ob_start(function () { return ''; });\n");
        }
        $compiler
            ->subcompile($this->getNode('body'))
            ->write("echo trim(preg_replace('/>\s+</', '><', ob_get_clean()));\n")
        ;
    }
}

class_alias('Twig\Node\SpacelessNode', 'Twig_Node_Spaceless');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;

/**
 * Represents a block node.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class BlockNode extends Node
{
    public function __construct($name, \Twig_NodeInterface $body, $lineno, $tag = null)
    {
        parent::__construct(['body' => $body], ['name' => $name], $lineno, $tag);
    }

    public function compile(Compiler $compiler)
    {
        $compiler
            ->addDebugInfo($this)
            ->write(sprintf("public function block_%s(\$context, array \$blocks = [])\n", $this->getAttribute('name')), "{\n")
            ->indent()
        ;

        $compiler
            ->subcompile($this->getNode('body'))
            ->outdent()
            ->write("}\n\n")
        ;
    }
}

class_alias('Twig\Node\BlockNode', 'Twig_Node_Block');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;
use Twig\Source;

/**
 * Represents a node in the AST.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class Node implements \Twig_NodeInterface
{
    protected $nodes;
    protected $attributes;
    protected $lineno;
    protected $tag;

    private $name;
    private $sourceContext;

    /**
     * @param array  $nodes      An array of named nodes
     * @param array  $attributes An array of attributes (should not be nodes)
     * @param int    $lineno     The line number
     * @param string $tag        The tag name associated with the Node
     */
    public function __construct(array $nodes = [], array $attributes = [], $lineno = 0, $tag = null)
    {
        foreach ($nodes as $name => $node) {
            if (!$node instanceof \Twig_NodeInterface) {
                @trigger_error(sprintf('Using "%s" for the value of node "%s" of "%s" is deprecated since version 1.25 and will be removed in 2.0.', \is_object($node) ? \get_class($node) : (null === $node ? 'null' : \gettype($node)), $name, \get_class($this)), E_USER_DEPRECATED);
            }
        }
        $this->nodes = $nodes;
        $this->attributes = $attributes;
        $this->lineno = $lineno;
        $this->tag = $tag;
    }

    public function __toString()
    {
        $attributes = [];
        foreach ($this->attributes as $name => $value) {
            $attributes[] = sprintf('%s: %s', $name, str_replace("\n", '', var_export($value, true)));
        }

        $repr = [\get_class($this).'('.implode(', ', $attributes)];

        if (\count($this->nodes)) {
            foreach ($this->nodes as $name => $node) {
                $len = \strlen($name) + 4;
                $noderepr = [];
                foreach (explode("\n", (string) $node) as $line) {
                    $noderepr[] = str_repeat(' ', $len).$line;
                }

                $repr[] = sprintf('  %s: %s', $name, ltrim(implode("\n", $noderepr)));
            }

            $repr[] = ')';
        } else {
            $repr[0] .= ')';
        }

        return implode("\n", $repr);
    }

    /**
     * @deprecated since 1.16.1 (to be removed in 2.0)
     */
    public function toXml($asDom = false)
    {
        @trigger_error(sprintf('%s is deprecated since version 1.16.1 and will be removed in 2.0.', __METHOD__), E_USER_DEPRECATED);

        $dom = new \DOMDocument('1.0', 'UTF-8');
        $dom->formatOutput = true;
        $dom->appendChild($xml = $dom->createElement('twig'));

        $xml->appendChild($node = $dom->createElement('node'));
        $node->setAttribute('class', \get_class($this));

        foreach ($this->attributes as $name => $value) {
            $node->appendChild($attribute = $dom->createElement('attribute'));
            $attribute->setAttribute('name', $name);
            $attribute->appendChild($dom->createTextNode($value));
        }

        foreach ($this->nodes as $name => $n) {
            if (null === $n) {
                continue;
            }

            $child = $n->toXml(true)->getElementsByTagName('node')->item(0);
            $child = $dom->importNode($child, true);
            $child->setAttribute('name', $name);

            $node->appendChild($child);
        }

        return $asDom ? $dom : $dom->saveXML();
    }

    public function compile(Compiler $compiler)
    {
        foreach ($this->nodes as $node) {
            $node->compile($compiler);
        }
    }

    public function getTemplateLine()
    {
        return $this->lineno;
    }

    /**
     * @deprecated since 1.27 (to be removed in 2.0)
     */
    public function getLine()
    {
        @trigger_error('The '.__METHOD__.' method is deprecated since version 1.27 and will be removed in 2.0. Use getTemplateLine() instead.', E_USER_DEPRECATED);

        return $this->lineno;
    }

    public function getNodeTag()
    {
        return $this->tag;
    }

    /**
     * @return bool
     */
    public function hasAttribute($name)
    {
        return \array_key_exists($name, $this->attributes);
    }

    /**
     * @return mixed
     */
    public function getAttribute($name)
    {
        if (!\array_key_exists($name, $this->attributes)) {
            throw new \LogicException(sprintf('Attribute "%s" does not exist for Node "%s".', $name, \get_class($this)));
        }

        return $this->attributes[$name];
    }

    /**
     * @param string $name
     * @param mixed  $value
     */
    public function setAttribute($name, $value)
    {
        $this->attributes[$name] = $value;
    }

    public function removeAttribute($name)
    {
        unset($this->attributes[$name]);
    }

    /**
     * @return bool
     */
    public function hasNode($name)
    {
        return \array_key_exists($name, $this->nodes);
    }

    /**
     * @return Node
     */
    public function getNode($name)
    {
        if (!\array_key_exists($name, $this->nodes)) {
            throw new \LogicException(sprintf('Node "%s" does not exist for Node "%s".', $name, \get_class($this)));
        }

        return $this->nodes[$name];
    }

    public function setNode($name, $node = null)
    {
        if (!$node instanceof \Twig_NodeInterface) {
            @trigger_error(sprintf('Using "%s" for the value of node "%s" of "%s" is deprecated since version 1.25 and will be removed in 2.0.', \is_object($node) ? \get_class($node) : (null === $node ? 'null' : \gettype($node)), $name, \get_class($this)), E_USER_DEPRECATED);
        }

        $this->nodes[$name] = $node;
    }

    public function removeNode($name)
    {
        unset($this->nodes[$name]);
    }

    public function count()
    {
        return \count($this->nodes);
    }

    public function getIterator()
    {
        return new \ArrayIterator($this->nodes);
    }

    public function setTemplateName($name)
    {
        $this->name = $name;
        foreach ($this->nodes as $node) {
            if (null !== $node) {
                $node->setTemplateName($name);
            }
        }
    }

    public function getTemplateName()
    {
        return $this->name;
    }

    public function setSourceContext(Source $source)
    {
        $this->sourceContext = $source;
        foreach ($this->nodes as $node) {
            if ($node instanceof Node) {
                $node->setSourceContext($source);
            }
        }
    }

    public function getSourceContext()
    {
        return $this->sourceContext;
    }

    /**
     * @deprecated since 1.27 (to be removed in 2.0)
     */
    public function setFilename($name)
    {
        @trigger_error('The '.__METHOD__.' method is deprecated since version 1.27 and will be removed in 2.0. Use setTemplateName() instead.', E_USER_DEPRECATED);

        $this->setTemplateName($name);
    }

    /**
     * @deprecated since 1.27 (to be removed in 2.0)
     */
    public function getFilename()
    {
        @trigger_error('The '.__METHOD__.' method is deprecated since version 1.27 and will be removed in 2.0. Use getTemplateName() instead.', E_USER_DEPRECATED);

        return $this->name;
    }
}

class_alias('Twig\Node\Node', 'Twig_Node');

// Ensure that the aliased name is loaded to keep BC for classes implementing the typehint with the old aliased name.
class_exists('Twig\Compiler');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;

/**
 * Represents a nested "with" scope.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class WithNode extends Node
{
    public function __construct(Node $body, Node $variables = null, $only = false, $lineno, $tag = null)
    {
        $nodes = ['body' => $body];
        if (null !== $variables) {
            $nodes['variables'] = $variables;
        }

        parent::__construct($nodes, ['only' => (bool) $only], $lineno, $tag);
    }

    public function compile(Compiler $compiler)
    {
        $compiler->addDebugInfo($this);

        if ($this->hasNode('variables')) {
            $node = $this->getNode('variables');
            $varsName = $compiler->getVarName();
            $compiler
                ->write(sprintf('$%s = ', $varsName))
                ->subcompile($node)
                ->raw(";\n")
                ->write(sprintf("if (!twig_test_iterable(\$%s)) {\n", $varsName))
                ->indent()
                ->write("throw new RuntimeError('Variables passed to the \"with\" tag must be a hash.', ")
                ->repr($node->getTemplateLine())
                ->raw(", \$this->getSourceContext());\n")
                ->outdent()
                ->write("}\n")
                ->write(sprintf("\$%s = twig_to_array(\$%s);\n", $varsName, $varsName))
            ;

            if ($this->getAttribute('only')) {
                $compiler->write("\$context = ['_parent' => \$context];\n");
            } else {
                $compiler->write("\$context['_parent'] = \$context;\n");
            }

            $compiler->write(sprintf("\$context = \$this->env->mergeGlobals(array_merge(\$context, \$%s));\n", $varsName));
        } else {
            $compiler->write("\$context['_parent'] = \$context;\n");
        }

        $compiler
            ->subcompile($this->getNode('body'))
            ->write("\$context = \$context['_parent'];\n")
        ;
    }
}

class_alias('Twig\Node\WithNode', 'Twig_Node_With');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;

/**
 * Represents an autoescape node.
 *
 * The value is the escaping strategy (can be html, js, ...)
 *
 * The true value is equivalent to html.
 *
 * If autoescaping is disabled, then the value is false.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class AutoEscapeNode extends Node
{
    public function __construct($value, \Twig_NodeInterface $body, $lineno, $tag = 'autoescape')
    {
        parent::__construct(['body' => $body], ['value' => $value], $lineno, $tag);
    }

    public function compile(Compiler $compiler)
    {
        $compiler->subcompile($this->getNode('body'));
    }
}

class_alias('Twig\Node\AutoEscapeNode', 'Twig_Node_AutoEscape');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;
use Twig\Node\Expression\ConstantExpression;

/**
 * Represents a set node.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class SetNode extends Node implements NodeCaptureInterface
{
    public function __construct($capture, \Twig_NodeInterface $names, \Twig_NodeInterface $values, $lineno, $tag = null)
    {
        parent::__construct(['names' => $names, 'values' => $values], ['capture' => $capture, 'safe' => false], $lineno, $tag);

        /*
         * Optimizes the node when capture is used for a large block of text.
         *
         * {% set foo %}foo{% endset %} is compiled to $context['foo'] = new Twig\Markup("foo");
         */
        if ($this->getAttribute('capture')) {
            $this->setAttribute('safe', true);

            $values = $this->getNode('values');
            if ($values instanceof TextNode) {
                $this->setNode('values', new ConstantExpression($values->getAttribute('data'), $values->getTemplateLine()));
                $this->setAttribute('capture', false);
            }
        }
    }

    public function compile(Compiler $compiler)
    {
        $compiler->addDebugInfo($this);

        if (\count($this->getNode('names')) > 1) {
            $compiler->write('list(');
            foreach ($this->getNode('names') as $idx => $node) {
                if ($idx) {
                    $compiler->raw(', ');
                }

                $compiler->subcompile($node);
            }
            $compiler->raw(')');
        } else {
            if ($this->getAttribute('capture')) {
                if ($compiler->getEnvironment()->isDebug()) {
                    $compiler->write("ob_start();\n");
                } else {
                    $compiler->write("ob_start(function () { return ''; });\n");
                }
                $compiler
                    ->subcompile($this->getNode('values'))
                ;
            }

            $compiler->subcompile($this->getNode('names'), false);

            if ($this->getAttribute('capture')) {
                $compiler->raw(" = ('' === \$tmp = ob_get_clean()) ? '' : new Markup(\$tmp, \$this->env->getCharset())");
            }
        }

        if (!$this->getAttribute('capture')) {
            $compiler->raw(' = ');

            if (\count($this->getNode('names')) > 1) {
                $compiler->write('[');
                foreach ($this->getNode('values') as $idx => $value) {
                    if ($idx) {
                        $compiler->raw(', ');
                    }

                    $compiler->subcompile($value);
                }
                $compiler->raw(']');
            } else {
                if ($this->getAttribute('safe')) {
                    $compiler
                        ->raw("('' === \$tmp = ")
                        ->subcompile($this->getNode('values'))
                        ->raw(") ? '' : new Markup(\$tmp, \$this->env->getCharset())")
                    ;
                } else {
                    $compiler->subcompile($this->getNode('values'));
                }
            }
        }

        $compiler->raw(";\n");
    }
}

class_alias('Twig\Node\SetNode', 'Twig_Node_Set');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;
use Twig\Node\Expression\AbstractExpression;
use Twig\Node\Expression\NameExpression;

/**
 * Represents an import node.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ImportNode extends Node
{
    public function __construct(AbstractExpression $expr, AbstractExpression $var, $lineno, $tag = null)
    {
        parent::__construct(['expr' => $expr, 'var' => $var], [], $lineno, $tag);
    }

    public function compile(Compiler $compiler)
    {
        $compiler
            ->addDebugInfo($this)
            ->write('')
            ->subcompile($this->getNode('var'))
            ->raw(' = ')
        ;

        if ($this->getNode('expr') instanceof NameExpression && '_self' === $this->getNode('expr')->getAttribute('name')) {
            $compiler->raw('$this');
        } else {
            $compiler
                ->raw('$this->loadTemplate(')
                ->subcompile($this->getNode('expr'))
                ->raw(', ')
                ->repr($this->getTemplateName())
                ->raw(', ')
                ->repr($this->getTemplateLine())
                ->raw(')->unwrap()')
            ;
        }

        $compiler->raw(";\n");
    }
}

class_alias('Twig\Node\ImportNode', 'Twig_Node_Import');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;
use Twig\Node\Expression\AbstractExpression;

/**
 * Represents a do node.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class DoNode extends Node
{
    public function __construct(AbstractExpression $expr, $lineno, $tag = null)
    {
        parent::__construct(['expr' => $expr], [], $lineno, $tag);
    }

    public function compile(Compiler $compiler)
    {
        $compiler
            ->addDebugInfo($this)
            ->write('')
            ->subcompile($this->getNode('expr'))
            ->raw(";\n")
        ;
    }
}

class_alias('Twig\Node\DoNode', 'Twig_Node_Do');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;
use Twig\Node\Expression\AbstractExpression;
use Twig\Node\Expression\ConstantExpression;
use Twig\Source;

/**
 * Represents a module node.
 *
 * Consider this class as being final. If you need to customize the behavior of
 * the generated class, consider adding nodes to the following nodes: display_start,
 * display_end, constructor_start, constructor_end, and class_end.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ModuleNode extends Node
{
    public function __construct(\Twig_NodeInterface $body, AbstractExpression $parent = null, \Twig_NodeInterface $blocks, \Twig_NodeInterface $macros, \Twig_NodeInterface $traits, $embeddedTemplates, $name, $source = '')
    {
        if (!$name instanceof Source) {
            @trigger_error(sprintf('Passing a string as the $name argument of %s() is deprecated since version 1.27. Pass a \Twig\Source instance instead.', __METHOD__), E_USER_DEPRECATED);
            $source = new Source($source, $name);
        } else {
            $source = $name;
        }

        $nodes = [
            'body' => $body,
            'blocks' => $blocks,
            'macros' => $macros,
            'traits' => $traits,
            'display_start' => new Node(),
            'display_end' => new Node(),
            'constructor_start' => new Node(),
            'constructor_end' => new Node(),
            'class_end' => new Node(),
        ];
        if (null !== $parent) {
            $nodes['parent'] = $parent;
        }

        // embedded templates are set as attributes so that they are only visited once by the visitors
        parent::__construct($nodes, [
            // source to be remove in 2.0
            'source' => $source->getCode(),
            // filename to be remove in 2.0 (use getTemplateName() instead)
            'filename' => $source->getName(),
            'index' => null,
            'embedded_templates' => $embeddedTemplates,
        ], 1);

        // populate the template name of all node children
        $this->setTemplateName($source->getName());
        $this->setSourceContext($source);
    }

    public function setIndex($index)
    {
        $this->setAttribute('index', $index);
    }

    public function compile(Compiler $compiler)
    {
        $this->compileTemplate($compiler);

        foreach ($this->getAttribute('embedded_templates') as $template) {
            $compiler->subcompile($template);
        }
    }

    protected function compileTemplate(Compiler $compiler)
    {
        if (!$this->getAttribute('index')) {
            $compiler->write('<?php');
        }

        $this->compileClassHeader($compiler);

        if (
            \count($this->getNode('blocks'))
            || \count($this->getNode('traits'))
            || !$this->hasNode('parent')
            || $this->getNode('parent') instanceof ConstantExpression
            || \count($this->getNode('constructor_start'))
            || \count($this->getNode('constructor_end'))
        ) {
            $this->compileConstructor($compiler);
        }

        $this->compileGetParent($compiler);

        $this->compileDisplay($compiler);

        $compiler->subcompile($this->getNode('blocks'));

        $this->compileMacros($compiler);

        $this->compileGetTemplateName($compiler);

        $this->compileIsTraitable($compiler);

        $this->compileDebugInfo($compiler);

        $this->compileGetSource($compiler);

        $this->compileGetSourceContext($compiler);

        $this->compileClassFooter($compiler);
    }

    protected function compileGetParent(Compiler $compiler)
    {
        if (!$this->hasNode('parent')) {
            return;
        }
        $parent = $this->getNode('parent');

        $compiler
            ->write("protected function doGetParent(array \$context)\n", "{\n")
            ->indent()
            ->addDebugInfo($parent)
            ->write('return ')
        ;

        if ($parent instanceof ConstantExpression) {
            $compiler->subcompile($parent);
        } else {
            $compiler
                ->raw('$this->loadTemplate(')
                ->subcompile($parent)
                ->raw(', ')
                ->repr($this->getSourceContext()->getName())
                ->raw(', ')
                ->repr($parent->getTemplateLine())
                ->raw(')')
            ;
        }

        $compiler
            ->raw(";\n")
            ->outdent()
            ->write("}\n\n")
        ;
    }

    protected function compileClassHeader(Compiler $compiler)
    {
        $compiler
            ->write("\n\n")
        ;
        if (!$this->getAttribute('index')) {
            $compiler
                ->write("use Twig\Environment;\n")
                ->write("use Twig\Error\LoaderError;\n")
                ->write("use Twig\Error\RuntimeError;\n")
                ->write("use Twig\Markup;\n")
                ->write("use Twig\Sandbox\SecurityError;\n")
                ->write("use Twig\Sandbox\SecurityNotAllowedTagError;\n")
                ->write("use Twig\Sandbox\SecurityNotAllowedFilterError;\n")
                ->write("use Twig\Sandbox\SecurityNotAllowedFunctionError;\n")
                ->write("use Twig\Source;\n")
                ->write("use Twig\Template;\n\n")
            ;
        }
        $compiler
            // if the template name contains */, add a blank to avoid a PHP parse error
            ->write('/* '.str_replace('*/', '* /', $this->getSourceContext()->getName())." */\n")
            ->write('class '.$compiler->getEnvironment()->getTemplateClass($this->getSourceContext()->getName(), $this->getAttribute('index')))
            ->raw(sprintf(" extends %s\n", $compiler->getEnvironment()->getBaseTemplateClass()))
            ->write("{\n")
            ->indent()
        ;
    }

    protected function compileConstructor(Compiler $compiler)
    {
        $compiler
            ->write("public function __construct(Environment \$env)\n", "{\n")
            ->indent()
            ->subcompile($this->getNode('constructor_start'))
            ->write("parent::__construct(\$env);\n\n")
        ;

        // parent
        if (!$this->hasNode('parent')) {
            $compiler->write("\$this->parent = false;\n\n");
        }

        $countTraits = \count($this->getNode('traits'));
        if ($countTraits) {
            // traits
            foreach ($this->getNode('traits') as $i => $trait) {
                $this->compileLoadTemplate($compiler, $trait->getNode('template'), sprintf('$_trait_%s', $i));

                $node = $trait->getNode('template');
                $compiler
                    ->addDebugInfo($node)
                    ->write(sprintf("if (!\$_trait_%s->isTraitable()) {\n", $i))
                    ->indent()
                    ->write("throw new RuntimeError('Template \"'.")
                    ->subcompile($trait->getNode('template'))
                    ->raw(".'\" cannot be used as a trait.', ")
                    ->repr($node->getTemplateLine())
                    ->raw(", \$this->getSourceContext());\n")
                    ->outdent()
                    ->write("}\n")
                    ->write(sprintf("\$_trait_%s_blocks = \$_trait_%s->getBlocks();\n\n", $i, $i))
                ;

                foreach ($trait->getNode('targets') as $key => $value) {
                    $compiler
                        ->write(sprintf('if (!isset($_trait_%s_blocks[', $i))
                        ->string($key)
                        ->raw("])) {\n")
                        ->indent()
                        ->write("throw new RuntimeError(sprintf('Block ")
                        ->string($key)
                        ->raw(' is not defined in trait ')
                        ->subcompile($trait->getNode('template'))
                        ->raw(".'), ")
                        ->repr($node->getTemplateLine())
                        ->raw(", \$this->getSourceContext());\n")
                        ->outdent()
                        ->write("}\n\n")

                        ->write(sprintf('$_trait_%s_blocks[', $i))
                        ->subcompile($value)
                        ->raw(sprintf('] = $_trait_%s_blocks[', $i))
                        ->string($key)
                        ->raw(sprintf(']; unset($_trait_%s_blocks[', $i))
                        ->string($key)
                        ->raw("]);\n\n")
                    ;
                }
            }

            if ($countTraits > 1) {
                $compiler
                    ->write("\$this->traits = array_merge(\n")
                    ->indent()
                ;

                for ($i = 0; $i < $countTraits; ++$i) {
                    $compiler
                        ->write(sprintf('$_trait_%s_blocks'.($i == $countTraits - 1 ? '' : ',')."\n", $i))
                    ;
                }

                $compiler
                    ->outdent()
                    ->write(");\n\n")
                ;
            } else {
                $compiler
                    ->write("\$this->traits = \$_trait_0_blocks;\n\n")
                ;
            }

            $compiler
                ->write("\$this->blocks = array_merge(\n")
                ->indent()
                ->write("\$this->traits,\n")
                ->write("[\n")
            ;
        } else {
            $compiler
                ->write("\$this->blocks = [\n")
            ;
        }

        // blocks
        $compiler
            ->indent()
        ;

        foreach ($this->getNode('blocks') as $name => $node) {
            $compiler
                ->write(sprintf("'%s' => [\$this, 'block_%s'],\n", $name, $name))
            ;
        }

        if ($countTraits) {
            $compiler
                ->outdent()
                ->write("]\n")
                ->outdent()
                ->write(");\n")
            ;
        } else {
            $compiler
                ->outdent()
                ->write("];\n")
            ;
        }

        $compiler
            ->subcompile($this->getNode('constructor_end'))
            ->outdent()
            ->write("}\n\n")
        ;
    }

    protected function compileDisplay(Compiler $compiler)
    {
        $compiler
            ->write("protected function doDisplay(array \$context, array \$blocks = [])\n", "{\n")
            ->indent()
            ->subcompile($this->getNode('display_start'))
            ->subcompile($this->getNode('body'))
        ;

        if ($this->hasNode('parent')) {
            $parent = $this->getNode('parent');

            $compiler->addDebugInfo($parent);
            if ($parent instanceof ConstantExpression) {
                $compiler
                    ->write('$this->parent = $this->loadTemplate(')
                    ->subcompile($parent)
                    ->raw(', ')
                    ->repr($this->getSourceContext()->getName())
                    ->raw(', ')
                    ->repr($parent->getTemplateLine())
                    ->raw(");\n")
                ;
                $compiler->write('$this->parent');
            } else {
                $compiler->write('$this->getParent($context)');
            }
            $compiler->raw("->display(\$context, array_merge(\$this->blocks, \$blocks));\n");
        }

        $compiler
            ->subcompile($this->getNode('display_end'))
            ->outdent()
            ->write("}\n\n")
        ;
    }

    protected function compileClassFooter(Compiler $compiler)
    {
        $compiler
            ->subcompile($this->getNode('class_end'))
            ->outdent()
            ->write("}\n")
        ;
    }

    protected function compileMacros(Compiler $compiler)
    {
        $compiler->subcompile($this->getNode('macros'));
    }

    protected function compileGetTemplateName(Compiler $compiler)
    {
        $compiler
            ->write("public function getTemplateName()\n", "{\n")
            ->indent()
            ->write('return ')
            ->repr($this->getSourceContext()->getName())
            ->raw(";\n")
            ->outdent()
            ->write("}\n\n")
        ;
    }

    protected function compileIsTraitable(Compiler $compiler)
    {
        // A template can be used as a trait if:
        //   * it has no parent
        //   * it has no macros
        //   * it has no body
        //
        // Put another way, a template can be used as a trait if it
        // only contains blocks and use statements.
        $traitable = !$this->hasNode('parent') && 0 === \count($this->getNode('macros'));
        if ($traitable) {
            if ($this->getNode('body') instanceof BodyNode) {
                $nodes = $this->getNode('body')->getNode(0);
            } else {
                $nodes = $this->getNode('body');
            }

            if (!\count($nodes)) {
                $nodes = new Node([$nodes]);
            }

            foreach ($nodes as $node) {
                if (!\count($node)) {
                    continue;
                }

                if ($node instanceof TextNode && ctype_space($node->getAttribute('data'))) {
                    continue;
                }

                if ($node instanceof BlockReferenceNode) {
                    continue;
                }

                $traitable = false;
                break;
            }
        }

        if ($traitable) {
            return;
        }

        $compiler
            ->write("public function isTraitable()\n", "{\n")
            ->indent()
            ->write(sprintf("return %s;\n", $traitable ? 'true' : 'false'))
            ->outdent()
            ->write("}\n\n")
        ;
    }

    protected function compileDebugInfo(Compiler $compiler)
    {
        $compiler
            ->write("public function getDebugInfo()\n", "{\n")
            ->indent()
            ->write(sprintf("return %s;\n", str_replace("\n", '', var_export(array_reverse($compiler->getDebugInfo(), true), true))))
            ->outdent()
            ->write("}\n\n")
        ;
    }

    protected function compileGetSource(Compiler $compiler)
    {
        $compiler
            ->write("/** @deprecated since 1.27 (to be removed in 2.0). Use getSourceContext() instead */\n")
            ->write("public function getSource()\n", "{\n")
            ->indent()
            ->write("@trigger_error('The '.__METHOD__.' method is deprecated since version 1.27 and will be removed in 2.0. Use getSourceContext() instead.', E_USER_DEPRECATED);\n\n")
            ->write('return $this->getSourceContext()->getCode();')
            ->raw("\n")
            ->outdent()
            ->write("}\n\n")
        ;
    }

    protected function compileGetSourceContext(Compiler $compiler)
    {
        $compiler
            ->write("public function getSourceContext()\n", "{\n")
            ->indent()
            ->write('return new Source(')
            ->string($compiler->getEnvironment()->isDebug() ? $this->getSourceContext()->getCode() : '')
            ->raw(', ')
            ->string($this->getSourceContext()->getName())
            ->raw(', ')
            ->string($this->getSourceContext()->getPath())
            ->raw(");\n")
            ->outdent()
            ->write("}\n")
        ;
    }

    protected function compileLoadTemplate(Compiler $compiler, $node, $var)
    {
        if ($node instanceof ConstantExpression) {
            $compiler
                ->write(sprintf('%s = $this->loadTemplate(', $var))
                ->subcompile($node)
                ->raw(', ')
                ->repr($node->getTemplateName())
                ->raw(', ')
                ->repr($node->getTemplateLine())
                ->raw(");\n")
            ;
        } else {
            throw new \LogicException('Trait templates can only be constant nodes.');
        }
    }
}

class_alias('Twig\Node\ModuleNode', 'Twig_Node_Module');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;

/**
 * Represents a flush node.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class FlushNode extends Node
{
    public function __construct($lineno, $tag)
    {
        parent::__construct([], [], $lineno, $tag);
    }

    public function compile(Compiler $compiler)
    {
        $compiler
            ->addDebugInfo($this)
            ->write("flush();\n")
        ;
    }
}

class_alias('Twig\Node\FlushNode', 'Twig_Node_Flush');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;

/**
 * Internal node used by the for node.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ForLoopNode extends Node
{
    public function __construct($lineno, $tag = null)
    {
        parent::__construct([], ['with_loop' => false, 'ifexpr' => false, 'else' => false], $lineno, $tag);
    }

    public function compile(Compiler $compiler)
    {
        if ($this->getAttribute('else')) {
            $compiler->write("\$context['_iterated'] = true;\n");
        }

        if ($this->getAttribute('with_loop')) {
            $compiler
                ->write("++\$context['loop']['index0'];\n")
                ->write("++\$context['loop']['index'];\n")
                ->write("\$context['loop']['first'] = false;\n")
            ;

            if (!$this->getAttribute('ifexpr')) {
                $compiler
                    ->write("if (isset(\$context['loop']['length'])) {\n")
                    ->indent()
                    ->write("--\$context['loop']['revindex0'];\n")
                    ->write("--\$context['loop']['revindex'];\n")
                    ->write("\$context['loop']['last'] = 0 === \$context['loop']['revindex0'];\n")
                    ->outdent()
                    ->write("}\n")
                ;
            }
        }
    }
}

class_alias('Twig\Node\ForLoopNode', 'Twig_Node_ForLoop');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Unary;

use Twig\Compiler;

class NegUnary extends AbstractUnary
{
    public function operator(Compiler $compiler)
    {
        $compiler->raw('-');
    }
}

class_alias('Twig\Node\Expression\Unary\NegUnary', 'Twig_Node_Expression_Unary_Neg');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Unary;

use Twig\Compiler;

class NotUnary extends AbstractUnary
{
    public function operator(Compiler $compiler)
    {
        $compiler->raw('!');
    }
}

class_alias('Twig\Node\Expression\Unary\NotUnary', 'Twig_Node_Expression_Unary_Not');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Unary;

use Twig\Compiler;

class PosUnary extends AbstractUnary
{
    public function operator(Compiler $compiler)
    {
        $compiler->raw('+');
    }
}

class_alias('Twig\Node\Expression\Unary\PosUnary', 'Twig_Node_Expression_Unary_Pos');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Unary;

use Twig\Compiler;
use Twig\Node\Expression\AbstractExpression;

abstract class AbstractUnary extends AbstractExpression
{
    public function __construct(\Twig_NodeInterface $node, $lineno)
    {
        parent::__construct(['node' => $node], [], $lineno);
    }

    public function compile(Compiler $compiler)
    {
        $compiler->raw(' ');
        $this->operator($compiler);
        $compiler->subcompile($this->getNode('node'));
    }

    abstract public function operator(Compiler $compiler);
}

class_alias('Twig\Node\Expression\Unary\AbstractUnary', 'Twig_Node_Expression_Unary');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression;

use Twig\Compiler;
use Twig\Error\SyntaxError;
use Twig\Extension\ExtensionInterface;
use Twig\Node\Node;

abstract class CallExpression extends AbstractExpression
{
    private $reflector;

    protected function compileCallable(Compiler $compiler)
    {
        $closingParenthesis = false;
        $isArray = false;
        if ($this->hasAttribute('callable') && $callable = $this->getAttribute('callable')) {
            if (\is_string($callable) && false === strpos($callable, '::')) {
                $compiler->raw($callable);
            } else {
                list($r, $callable) = $this->reflectCallable($callable);
                if ($r instanceof \ReflectionMethod && \is_string($callable[0])) {
                    if ($r->isStatic()) {
                        $compiler->raw(sprintf('%s::%s', $callable[0], $callable[1]));
                    } else {
                        $compiler->raw(sprintf('$this->env->getRuntime(\'%s\')->%s', $callable[0], $callable[1]));
                    }
                } elseif ($r instanceof \ReflectionMethod && $callable[0] instanceof ExtensionInterface) {
                    $compiler->raw(sprintf('$this->env->getExtension(\'%s\')->%s', \get_class($callable[0]), $callable[1]));
                } else {
                    $type = ucfirst($this->getAttribute('type'));
                    $compiler->raw(sprintf('call_user_func_array($this->env->get%s(\'%s\')->getCallable(), ', $type, $this->getAttribute('name')));
                    $closingParenthesis = true;
                    $isArray = true;
                }
            }
        } else {
            $compiler->raw($this->getAttribute('thing')->compile());
        }

        $this->compileArguments($compiler, $isArray);

        if ($closingParenthesis) {
            $compiler->raw(')');
        }
    }

    protected function compileArguments(Compiler $compiler, $isArray = false)
    {
        $compiler->raw($isArray ? '[' : '(');

        $first = true;

        if ($this->hasAttribute('needs_environment') && $this->getAttribute('needs_environment')) {
            $compiler->raw('$this->env');
            $first = false;
        }

        if ($this->hasAttribute('needs_context') && $this->getAttribute('needs_context')) {
            if (!$first) {
                $compiler->raw(', ');
            }
            $compiler->raw('$context');
            $first = false;
        }

        if ($this->hasAttribute('arguments')) {
            foreach ($this->getAttribute('arguments') as $argument) {
                if (!$first) {
                    $compiler->raw(', ');
                }
                $compiler->string($argument);
                $first = false;
            }
        }

        if ($this->hasNode('node')) {
            if (!$first) {
                $compiler->raw(', ');
            }
            $compiler->subcompile($this->getNode('node'));
            $first = false;
        }

        if ($this->hasNode('arguments')) {
            $callable = $this->hasAttribute('callable') ? $this->getAttribute('callable') : null;

            $arguments = $this->getArguments($callable, $this->getNode('arguments'));

            foreach ($arguments as $node) {
                if (!$first) {
                    $compiler->raw(', ');
                }
                $compiler->subcompile($node);
                $first = false;
            }
        }

        $compiler->raw($isArray ? ']' : ')');
    }

    protected function getArguments($callable, $arguments)
    {
        $callType = $this->getAttribute('type');
        $callName = $this->getAttribute('name');

        $parameters = [];
        $named = false;
        foreach ($arguments as $name => $node) {
            if (!\is_int($name)) {
                $named = true;
                $name = $this->normalizeName($name);
            } elseif ($named) {
                throw new SyntaxError(sprintf('Positional arguments cannot be used after named arguments for %s "%s".', $callType, $callName), $this->getTemplateLine(), $this->getSourceContext());
            }

            $parameters[$name] = $node;
        }

        $isVariadic = $this->hasAttribute('is_variadic') && $this->getAttribute('is_variadic');
        if (!$named && !$isVariadic) {
            return $parameters;
        }

        if (!$callable) {
            if ($named) {
                $message = sprintf('Named arguments are not supported for %s "%s".', $callType, $callName);
            } else {
                $message = sprintf('Arbitrary positional arguments are not supported for %s "%s".', $callType, $callName);
            }

            throw new \LogicException($message);
        }

        $callableParameters = $this->getCallableParameters($callable, $isVariadic);
        $arguments = [];
        $names = [];
        $missingArguments = [];
        $optionalArguments = [];
        $pos = 0;
        foreach ($callableParameters as $callableParameter) {
            $names[] = $name = $this->normalizeName($callableParameter->name);

            if (\array_key_exists($name, $parameters)) {
                if (\array_key_exists($pos, $parameters)) {
                    throw new SyntaxError(sprintf('Argument "%s" is defined twice for %s "%s".', $name, $callType, $callName), $this->getTemplateLine(), $this->getSourceContext());
                }

                if (\count($missingArguments)) {
                    throw new SyntaxError(sprintf(
                        'Argument "%s" could not be assigned for %s "%s(%s)" because it is mapped to an internal PHP function which cannot determine default value for optional argument%s "%s".',
                        $name, $callType, $callName, implode(', ', $names), \count($missingArguments) > 1 ? 's' : '', implode('", "', $missingArguments)
                    ), $this->getTemplateLine(), $this->getSourceContext());
                }

                $arguments = array_merge($arguments, $optionalArguments);
                $arguments[] = $parameters[$name];
                unset($parameters[$name]);
                $optionalArguments = [];
            } elseif (\array_key_exists($pos, $parameters)) {
                $arguments = array_merge($arguments, $optionalArguments);
                $arguments[] = $parameters[$pos];
                unset($parameters[$pos]);
                $optionalArguments = [];
                ++$pos;
            } elseif ($callableParameter->isDefaultValueAvailable()) {
                $optionalArguments[] = new ConstantExpression($callableParameter->getDefaultValue(), -1);
            } elseif ($callableParameter->isOptional()) {
                if (empty($parameters)) {
                    break;
                } else {
                    $missingArguments[] = $name;
                }
            } else {
                throw new SyntaxError(sprintf('Value for argument "%s" is required for %s "%s".', $name, $callType, $callName), $this->getTemplateLine(), $this->getSourceContext());
            }
        }

        if ($isVariadic) {
            $arbitraryArguments = new ArrayExpression([], -1);
            foreach ($parameters as $key => $value) {
                if (\is_int($key)) {
                    $arbitraryArguments->addElement($value);
                } else {
                    $arbitraryArguments->addElement($value, new ConstantExpression($key, -1));
                }
                unset($parameters[$key]);
            }

            if ($arbitraryArguments->count()) {
                $arguments = array_merge($arguments, $optionalArguments);
                $arguments[] = $arbitraryArguments;
            }
        }

        if (!empty($parameters)) {
            $unknownParameter = null;
            foreach ($parameters as $parameter) {
                if ($parameter instanceof Node) {
                    $unknownParameter = $parameter;
                    break;
                }
            }

            throw new SyntaxError(
                sprintf(
                    'Unknown argument%s "%s" for %s "%s(%s)".',
                    \count($parameters) > 1 ? 's' : '', implode('", "', array_keys($parameters)), $callType, $callName, implode(', ', $names)
                ),
                $unknownParameter ? $unknownParameter->getTemplateLine() : $this->getTemplateLine(),
                $unknownParameter ? $unknownParameter->getSourceContext() : $this->getSourceContext()
            );
        }

        return $arguments;
    }

    protected function normalizeName($name)
    {
        return strtolower(preg_replace(['/([A-Z]+)([A-Z][a-z])/', '/([a-z\d])([A-Z])/'], ['\\1_\\2', '\\1_\\2'], $name));
    }

    private function getCallableParameters($callable, $isVariadic)
    {
        list($r) = $this->reflectCallable($callable);
        if (null === $r) {
            return [];
        }

        $parameters = $r->getParameters();
        if ($this->hasNode('node')) {
            array_shift($parameters);
        }
        if ($this->hasAttribute('needs_environment') && $this->getAttribute('needs_environment')) {
            array_shift($parameters);
        }
        if ($this->hasAttribute('needs_context') && $this->getAttribute('needs_context')) {
            array_shift($parameters);
        }
        if ($this->hasAttribute('arguments') && null !== $this->getAttribute('arguments')) {
            foreach ($this->getAttribute('arguments') as $argument) {
                array_shift($parameters);
            }
        }
        if ($isVariadic) {
            $argument = end($parameters);
            if ($argument && $argument->isArray() && $argument->isDefaultValueAvailable() && [] === $argument->getDefaultValue()) {
                array_pop($parameters);
            } else {
                $callableName = $r->name;
                if ($r instanceof \ReflectionMethod) {
                    $callableName = $r->getDeclaringClass()->name.'::'.$callableName;
                }

                throw new \LogicException(sprintf('The last parameter of "%s" for %s "%s" must be an array with default value, eg. "array $arg = []".', $callableName, $this->getAttribute('type'), $this->getAttribute('name')));
            }
        }

        return $parameters;
    }

    private function reflectCallable($callable)
    {
        if (null !== $this->reflector) {
            return $this->reflector;
        }

        if (\is_array($callable)) {
            if (!method_exists($callable[0], $callable[1])) {
                // __call()
                return [null, []];
            }
            $r = new \ReflectionMethod($callable[0], $callable[1]);
        } elseif (\is_object($callable) && !$callable instanceof \Closure) {
            $r = new \ReflectionObject($callable);
            $r = $r->getMethod('__invoke');
            $callable = [$callable, '__invoke'];
        } elseif (\is_string($callable) && false !== $pos = strpos($callable, '::')) {
            $class = substr($callable, 0, $pos);
            $method = substr($callable, $pos + 2);
            if (!method_exists($class, $method)) {
                // __staticCall()
                return [null, []];
            }
            $r = new \ReflectionMethod($callable);
            $callable = [$class, $method];
        } else {
            $r = new \ReflectionFunction($callable);
        }

        return $this->reflector = [$r, $callable];
    }
}

class_alias('Twig\Node\Expression\CallExpression', 'Twig_Node_Expression_Call');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression;

use Twig\Compiler;
use Twig\TwigFunction;

class FunctionExpression extends CallExpression
{
    public function __construct($name, \Twig_NodeInterface $arguments, $lineno)
    {
        parent::__construct(['arguments' => $arguments], ['name' => $name, 'is_defined_test' => false], $lineno);
    }

    public function compile(Compiler $compiler)
    {
        $name = $this->getAttribute('name');
        $function = $compiler->getEnvironment()->getFunction($name);

        $this->setAttribute('name', $name);
        $this->setAttribute('type', 'function');
        $this->setAttribute('thing', $function);
        $this->setAttribute('needs_environment', $function->needsEnvironment());
        $this->setAttribute('needs_context', $function->needsContext());
        $this->setAttribute('arguments', $function->getArguments());
        if ($function instanceof \Twig_FunctionCallableInterface || $function instanceof TwigFunction) {
            $callable = $function->getCallable();
            if ('constant' === $name && $this->getAttribute('is_defined_test')) {
                $callable = 'twig_constant_is_defined';
            }

            $this->setAttribute('callable', $callable);
        }
        if ($function instanceof TwigFunction) {
            $this->setAttribute('is_variadic', $function->isVariadic());
        }

        $this->compileCallable($compiler);
    }
}

class_alias('Twig\Node\Expression\FunctionExpression', 'Twig_Node_Expression_Function');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression;

use Twig\Compiler;

/**
 * Represents a parent node.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ParentExpression extends AbstractExpression
{
    public function __construct($name, $lineno, $tag = null)
    {
        parent::__construct([], ['output' => false, 'name' => $name], $lineno, $tag);
    }

    public function compile(Compiler $compiler)
    {
        if ($this->getAttribute('output')) {
            $compiler
                ->addDebugInfo($this)
                ->write('$this->displayParentBlock(')
                ->string($this->getAttribute('name'))
                ->raw(", \$context, \$blocks);\n")
            ;
        } else {
            $compiler
                ->raw('$this->renderParentBlock(')
                ->string($this->getAttribute('name'))
                ->raw(', $context, $blocks)')
            ;
        }
    }
}

class_alias('Twig\Node\Expression\ParentExpression', 'Twig_Node_Expression_Parent');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Test;

use Twig\Compiler;
use Twig\Node\Expression\TestExpression;

/**
 * Checks if a number is even.
 *
 *  {{ var is even }}
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class EvenTest extends TestExpression
{
    public function compile(Compiler $compiler)
    {
        $compiler
            ->raw('(')
            ->subcompile($this->getNode('node'))
            ->raw(' % 2 == 0')
            ->raw(')')
        ;
    }
}

class_alias('Twig\Node\Expression\Test\EvenTest', 'Twig_Node_Expression_Test_Even');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Test;

use Twig\Compiler;
use Twig\Node\Expression\TestExpression;

/**
 * Checks if a variable is the same as another one (=== in PHP).
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class SameasTest extends TestExpression
{
    public function compile(Compiler $compiler)
    {
        $compiler
            ->raw('(')
            ->subcompile($this->getNode('node'))
            ->raw(' === ')
            ->subcompile($this->getNode('arguments')->getNode(0))
            ->raw(')')
        ;
    }
}

class_alias('Twig\Node\Expression\Test\SameasTest', 'Twig_Node_Expression_Test_Sameas');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Test;

use Twig\Compiler;
use Twig\Node\Expression\TestExpression;

/**
 * Checks if a variable is divisible by a number.
 *
 *  {% if loop.index is divisible by(3) %}
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class DivisiblebyTest extends TestExpression
{
    public function compile(Compiler $compiler)
    {
        $compiler
            ->raw('(0 == ')
            ->subcompile($this->getNode('node'))
            ->raw(' % ')
            ->subcompile($this->getNode('arguments')->getNode(0))
            ->raw(')')
        ;
    }
}

class_alias('Twig\Node\Expression\Test\DivisiblebyTest', 'Twig_Node_Expression_Test_Divisibleby');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Test;

use Twig\Compiler;
use Twig\Node\Expression\TestExpression;

/**
 * Checks if a variable is the exact same value as a constant.
 *
 *    {% if post.status is constant('Post::PUBLISHED') %}
 *      the status attribute is exactly the same as Post::PUBLISHED
 *    {% endif %}
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ConstantTest extends TestExpression
{
    public function compile(Compiler $compiler)
    {
        $compiler
            ->raw('(')
            ->subcompile($this->getNode('node'))
            ->raw(' === constant(')
        ;

        if ($this->getNode('arguments')->hasNode(1)) {
            $compiler
                ->raw('get_class(')
                ->subcompile($this->getNode('arguments')->getNode(1))
                ->raw(')."::".')
            ;
        }

        $compiler
            ->subcompile($this->getNode('arguments')->getNode(0))
            ->raw('))')
        ;
    }
}

class_alias('Twig\Node\Expression\Test\ConstantTest', 'Twig_Node_Expression_Test_Constant');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Test;

use Twig\Compiler;
use Twig\Node\Expression\TestExpression;

/**
 * Checks that a variable is null.
 *
 *  {{ var is none }}
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class NullTest extends TestExpression
{
    public function compile(Compiler $compiler)
    {
        $compiler
            ->raw('(null === ')
            ->subcompile($this->getNode('node'))
            ->raw(')')
        ;
    }
}

class_alias('Twig\Node\Expression\Test\NullTest', 'Twig_Node_Expression_Test_Null');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Test;

use Twig\Compiler;
use Twig\Error\SyntaxError;
use Twig\Node\Expression\ArrayExpression;
use Twig\Node\Expression\BlockReferenceExpression;
use Twig\Node\Expression\ConstantExpression;
use Twig\Node\Expression\FunctionExpression;
use Twig\Node\Expression\GetAttrExpression;
use Twig\Node\Expression\NameExpression;
use Twig\Node\Expression\TestExpression;

/**
 * Checks if a variable is defined in the current context.
 *
 *    {# defined works with variable names and variable attributes #}
 *    {% if foo is defined %}
 *        {# ... #}
 *    {% endif %}
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class DefinedTest extends TestExpression
{
    public function __construct(\Twig_NodeInterface $node, $name, \Twig_NodeInterface $arguments = null, $lineno)
    {
        if ($node instanceof NameExpression) {
            $node->setAttribute('is_defined_test', true);
        } elseif ($node instanceof GetAttrExpression) {
            $node->setAttribute('is_defined_test', true);
            $this->changeIgnoreStrictCheck($node);
        } elseif ($node instanceof BlockReferenceExpression) {
            $node->setAttribute('is_defined_test', true);
        } elseif ($node instanceof FunctionExpression && 'constant' === $node->getAttribute('name')) {
            $node->setAttribute('is_defined_test', true);
        } elseif ($node instanceof ConstantExpression || $node instanceof ArrayExpression) {
            $node = new ConstantExpression(true, $node->getTemplateLine());
        } else {
            throw new SyntaxError('The "defined" test only works with simple variables.', $lineno);
        }

        parent::__construct($node, $name, $arguments, $lineno);
    }

    protected function changeIgnoreStrictCheck(GetAttrExpression $node)
    {
        $node->setAttribute('ignore_strict_check', true);

        if ($node->getNode('node') instanceof GetAttrExpression) {
            $this->changeIgnoreStrictCheck($node->getNode('node'));
        }
    }

    public function compile(Compiler $compiler)
    {
        $compiler->subcompile($this->getNode('node'));
    }
}

class_alias('Twig\Node\Expression\Test\DefinedTest', 'Twig_Node_Expression_Test_Defined');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Test;

use Twig\Compiler;
use Twig\Node\Expression\TestExpression;

/**
 * Checks if a number is odd.
 *
 *  {{ var is odd }}
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class OddTest extends TestExpression
{
    public function compile(Compiler $compiler)
    {
        $compiler
            ->raw('(')
            ->subcompile($this->getNode('node'))
            ->raw(' % 2 == 1')
            ->raw(')')
        ;
    }
}

class_alias('Twig\Node\Expression\Test\OddTest', 'Twig_Node_Expression_Test_Odd');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression;

use Twig\Compiler;
use Twig\Node\Node;

/**
 * Represents a block call node.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class BlockReferenceExpression extends AbstractExpression
{
    /**
     * @param Node|null $template
     */
    public function __construct(\Twig_NodeInterface $name, $template = null, $lineno, $tag = null)
    {
        if (\is_bool($template)) {
            @trigger_error(sprintf('The %s method "$asString" argument is deprecated since version 1.28 and will be removed in 2.0.', __METHOD__), E_USER_DEPRECATED);

            $template = null;
        }

        $nodes = ['name' => $name];
        if (null !== $template) {
            $nodes['template'] = $template;
        }

        parent::__construct($nodes, ['is_defined_test' => false, 'output' => false], $lineno, $tag);
    }

    public function compile(Compiler $compiler)
    {
        if ($this->getAttribute('is_defined_test')) {
            $this->compileTemplateCall($compiler, 'hasBlock');
        } else {
            if ($this->getAttribute('output')) {
                $compiler->addDebugInfo($this);

                $this
                    ->compileTemplateCall($compiler, 'displayBlock')
                    ->raw(";\n");
            } else {
                $this->compileTemplateCall($compiler, 'renderBlock');
            }
        }
    }

    private function compileTemplateCall(Compiler $compiler, $method)
    {
        if (!$this->hasNode('template')) {
            $compiler->write('$this');
        } else {
            $compiler
                ->write('$this->loadTemplate(')
                ->subcompile($this->getNode('template'))
                ->raw(', ')
                ->repr($this->getTemplateName())
                ->raw(', ')
                ->repr($this->getTemplateLine())
                ->raw(')')
            ;
        }

        $compiler->raw(sprintf('->%s', $method));
        $this->compileBlockArguments($compiler);

        return $compiler;
    }

    private function compileBlockArguments(Compiler $compiler)
    {
        $compiler
            ->raw('(')
            ->subcompile($this->getNode('name'))
            ->raw(', $context');

        if (!$this->hasNode('template')) {
            $compiler->raw(', $blocks');
        }

        return $compiler->raw(')');
    }
}

class_alias('Twig\Node\Expression\BlockReferenceExpression', 'Twig_Node_Expression_BlockReference');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression;

use Twig\Compiler;
use Twig\TwigFilter;

class FilterExpression extends CallExpression
{
    public function __construct(\Twig_NodeInterface $node, ConstantExpression $filterName, \Twig_NodeInterface $arguments, $lineno, $tag = null)
    {
        parent::__construct(['node' => $node, 'filter' => $filterName, 'arguments' => $arguments], [], $lineno, $tag);
    }

    public function compile(Compiler $compiler)
    {
        $name = $this->getNode('filter')->getAttribute('value');
        $filter = $compiler->getEnvironment()->getFilter($name);

        $this->setAttribute('name', $name);
        $this->setAttribute('type', 'filter');
        $this->setAttribute('thing', $filter);
        $this->setAttribute('needs_environment', $filter->needsEnvironment());
        $this->setAttribute('needs_context', $filter->needsContext());
        $this->setAttribute('arguments', $filter->getArguments());
        if ($filter instanceof \Twig_FilterCallableInterface || $filter instanceof TwigFilter) {
            $this->setAttribute('callable', $filter->getCallable());
        }
        if ($filter instanceof TwigFilter) {
            $this->setAttribute('is_variadic', $filter->isVariadic());
        }

        $this->compileCallable($compiler);
    }
}

class_alias('Twig\Node\Expression\FilterExpression', 'Twig_Node_Expression_Filter');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression;

use Twig\Compiler;
use Twig\Node\Node;

/**
 * Represents an arrow function.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ArrowFunctionExpression extends AbstractExpression
{
    public function __construct(AbstractExpression $expr, Node $names, $lineno, $tag = null)
    {
        parent::__construct(['expr' => $expr, 'names' => $names], [], $lineno, $tag);
    }

    public function compile(Compiler $compiler)
    {
        $compiler
            ->addDebugInfo($this)
            ->raw('function (')
        ;
        foreach ($this->getNode('names') as $i => $name) {
            if ($i) {
                $compiler->raw(', ');
            }

            $compiler
                ->raw('$__')
                ->raw($name->getAttribute('name'))
                ->raw('__')
            ;
        }
        $compiler
            ->raw(') use ($context) { ')
        ;
        foreach ($this->getNode('names') as $name) {
            $compiler
                ->raw('$context["')
                ->raw($name->getAttribute('name'))
                ->raw('"] = $__')
                ->raw($name->getAttribute('name'))
                ->raw('__; ')
            ;
        }
        $compiler
            ->raw('return ')
            ->subcompile($this->getNode('expr'))
            ->raw('; }')
        ;
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression;

use Twig\Compiler;

class MethodCallExpression extends AbstractExpression
{
    public function __construct(AbstractExpression $node, $method, ArrayExpression $arguments, $lineno)
    {
        parent::__construct(['node' => $node, 'arguments' => $arguments], ['method' => $method, 'safe' => false], $lineno);

        if ($node instanceof NameExpression) {
            $node->setAttribute('always_defined', true);
        }
    }

    public function compile(Compiler $compiler)
    {
        $compiler
            ->subcompile($this->getNode('node'))
            ->raw('->')
            ->raw($this->getAttribute('method'))
            ->raw('(')
        ;
        $first = true;
        foreach ($this->getNode('arguments')->getKeyValuePairs() as $pair) {
            if (!$first) {
                $compiler->raw(', ');
            }
            $first = false;

            $compiler->subcompile($pair['value']);
        }
        $compiler->raw(')');
    }
}

class_alias('Twig\Node\Expression\MethodCallExpression', 'Twig_Node_Expression_MethodCall');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression;

use Twig\Compiler;

class ConstantExpression extends AbstractExpression
{
    public function __construct($value, $lineno)
    {
        parent::__construct([], ['value' => $value], $lineno);
    }

    public function compile(Compiler $compiler)
    {
        $compiler->repr($this->getAttribute('value'));
    }
}

class_alias('Twig\Node\Expression\ConstantExpression', 'Twig_Node_Expression_Constant');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression;

use Twig\Compiler;

class AssignNameExpression extends NameExpression
{
    public function compile(Compiler $compiler)
    {
        $compiler
            ->raw('$context[')
            ->string($this->getAttribute('name'))
            ->raw(']')
        ;
    }
}

class_alias('Twig\Node\Expression\AssignNameExpression', 'Twig_Node_Expression_AssignName');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression;

use Twig\Compiler;
use Twig\Node\Node;

/**
 * @internal
 */
final class InlinePrint extends AbstractExpression
{
    public function __construct(Node $node, $lineno)
    {
        parent::__construct(['node' => $node], [], $lineno);
    }

    public function compile(Compiler $compiler)
    {
        $compiler
            ->raw('print (')
            ->subcompile($this->getNode('node'))
            ->raw(')')
        ;
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression;

use Twig\Node\Node;

/**
 * Abstract class for all nodes that represents an expression.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
abstract class AbstractExpression extends Node
{
}

class_alias('Twig\Node\Expression\AbstractExpression', 'Twig_Node_Expression');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression;

use Twig\Compiler;

class TempNameExpression extends AbstractExpression
{
    public function __construct($name, $lineno)
    {
        parent::__construct([], ['name' => $name], $lineno);
    }

    public function compile(Compiler $compiler)
    {
        $compiler
            ->raw('$_')
            ->raw($this->getAttribute('name'))
            ->raw('_')
        ;
    }
}

class_alias('Twig\Node\Expression\TempNameExpression', 'Twig_Node_Expression_TempName');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression;

use Twig\Compiler;
use Twig\Node\Expression\Binary\AndBinary;
use Twig\Node\Expression\Test\DefinedTest;
use Twig\Node\Expression\Test\NullTest;
use Twig\Node\Expression\Unary\NotUnary;
use Twig\Node\Node;

class NullCoalesceExpression extends ConditionalExpression
{
    public function __construct(\Twig_NodeInterface $left, \Twig_NodeInterface $right, $lineno)
    {
        $test = new AndBinary(
            new DefinedTest(clone $left, 'defined', new Node(), $left->getTemplateLine()),
            new NotUnary(new NullTest($left, 'null', new Node(), $left->getTemplateLine()), $left->getTemplateLine()),
            $left->getTemplateLine()
        );

        parent::__construct($test, $left, $right, $lineno);
    }

    public function compile(Compiler $compiler)
    {
        /*
         * This optimizes only one case. PHP 7 also supports more complex expressions
         * that can return null. So, for instance, if log is defined, log("foo") ?? "..." works,
         * but log($a["foo"]) ?? "..." does not if $a["foo"] is not defined. More advanced
         * cases might be implemented as an optimizer node visitor, but has not been done
         * as benefits are probably not worth the added complexity.
         */
        if (\PHP_VERSION_ID >= 70000 && $this->getNode('expr2') instanceof NameExpression) {
            $this->getNode('expr2')->setAttribute('always_defined', true);
            $compiler
                ->raw('((')
                ->subcompile($this->getNode('expr2'))
                ->raw(') ?? (')
                ->subcompile($this->getNode('expr3'))
                ->raw('))')
            ;
        } else {
            parent::compile($compiler);
        }
    }
}

class_alias('Twig\Node\Expression\NullCoalesceExpression', 'Twig_Node_Expression_NullCoalesce');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression;

use Twig\Compiler;

class ArrayExpression extends AbstractExpression
{
    protected $index;

    public function __construct(array $elements, $lineno)
    {
        parent::__construct($elements, [], $lineno);

        $this->index = -1;
        foreach ($this->getKeyValuePairs() as $pair) {
            if ($pair['key'] instanceof ConstantExpression && ctype_digit((string) $pair['key']->getAttribute('value')) && $pair['key']->getAttribute('value') > $this->index) {
                $this->index = $pair['key']->getAttribute('value');
            }
        }
    }

    public function getKeyValuePairs()
    {
        $pairs = [];

        foreach (array_chunk($this->nodes, 2) as $pair) {
            $pairs[] = [
                'key' => $pair[0],
                'value' => $pair[1],
            ];
        }

        return $pairs;
    }

    public function hasElement(AbstractExpression $key)
    {
        foreach ($this->getKeyValuePairs() as $pair) {
            // we compare the string representation of the keys
            // to avoid comparing the line numbers which are not relevant here.
            if ((string) $key === (string) $pair['key']) {
                return true;
            }
        }

        return false;
    }

    public function addElement(AbstractExpression $value, AbstractExpression $key = null)
    {
        if (null === $key) {
            $key = new ConstantExpression(++$this->index, $value->getTemplateLine());
        }

        array_push($this->nodes, $key, $value);
    }

    public function compile(Compiler $compiler)
    {
        $compiler->raw('[');
        $first = true;
        foreach ($this->getKeyValuePairs() as $pair) {
            if (!$first) {
                $compiler->raw(', ');
            }
            $first = false;

            $compiler
                ->subcompile($pair['key'])
                ->raw(' => ')
                ->subcompile($pair['value'])
            ;
        }
        $compiler->raw(']');
    }
}

class_alias('Twig\Node\Expression\ArrayExpression', 'Twig_Node_Expression_Array');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression;

use Twig\Compiler;
use Twig\TwigTest;

class TestExpression extends CallExpression
{
    public function __construct(\Twig_NodeInterface $node, $name, \Twig_NodeInterface $arguments = null, $lineno)
    {
        $nodes = ['node' => $node];
        if (null !== $arguments) {
            $nodes['arguments'] = $arguments;
        }

        parent::__construct($nodes, ['name' => $name], $lineno);
    }

    public function compile(Compiler $compiler)
    {
        $name = $this->getAttribute('name');
        $test = $compiler->getEnvironment()->getTest($name);

        $this->setAttribute('name', $name);
        $this->setAttribute('type', 'test');
        $this->setAttribute('thing', $test);
        if ($test instanceof TwigTest) {
            $this->setAttribute('arguments', $test->getArguments());
        }
        if ($test instanceof \Twig_TestCallableInterface || $test instanceof TwigTest) {
            $this->setAttribute('callable', $test->getCallable());
        }
        if ($test instanceof TwigTest) {
            $this->setAttribute('is_variadic', $test->isVariadic());
        }

        $this->compileCallable($compiler);
    }
}

class_alias('Twig\Node\Expression\TestExpression', 'Twig_Node_Expression_Test');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class NotInBinary extends AbstractBinary
{
    public function compile(Compiler $compiler)
    {
        $compiler
            ->raw('!twig_in_filter(')
            ->subcompile($this->getNode('left'))
            ->raw(', ')
            ->subcompile($this->getNode('right'))
            ->raw(')')
        ;
    }

    public function operator(Compiler $compiler)
    {
        return $compiler->raw('not in');
    }
}

class_alias('Twig\Node\Expression\Binary\NotInBinary', 'Twig_Node_Expression_Binary_NotIn');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class RangeBinary extends AbstractBinary
{
    public function compile(Compiler $compiler)
    {
        $compiler
            ->raw('range(')
            ->subcompile($this->getNode('left'))
            ->raw(', ')
            ->subcompile($this->getNode('right'))
            ->raw(')')
        ;
    }

    public function operator(Compiler $compiler)
    {
        return $compiler->raw('..');
    }
}

class_alias('Twig\Node\Expression\Binary\RangeBinary', 'Twig_Node_Expression_Binary_Range');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class EndsWithBinary extends AbstractBinary
{
    public function compile(Compiler $compiler)
    {
        $left = $compiler->getVarName();
        $right = $compiler->getVarName();
        $compiler
            ->raw(sprintf('(is_string($%s = ', $left))
            ->subcompile($this->getNode('left'))
            ->raw(sprintf(') && is_string($%s = ', $right))
            ->subcompile($this->getNode('right'))
            ->raw(sprintf(') && (\'\' === $%2$s || $%2$s === substr($%1$s, -strlen($%2$s))))', $left, $right))
        ;
    }

    public function operator(Compiler $compiler)
    {
        return $compiler->raw('');
    }
}

class_alias('Twig\Node\Expression\Binary\EndsWithBinary', 'Twig_Node_Expression_Binary_EndsWith');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class MulBinary extends AbstractBinary
{
    public function operator(Compiler $compiler)
    {
        return $compiler->raw('*');
    }
}

class_alias('Twig\Node\Expression\Binary\MulBinary', 'Twig_Node_Expression_Binary_Mul');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class MatchesBinary extends AbstractBinary
{
    public function compile(Compiler $compiler)
    {
        $compiler
            ->raw('preg_match(')
            ->subcompile($this->getNode('right'))
            ->raw(', ')
            ->subcompile($this->getNode('left'))
            ->raw(')')
        ;
    }

    public function operator(Compiler $compiler)
    {
        return $compiler->raw('');
    }
}

class_alias('Twig\Node\Expression\Binary\MatchesBinary', 'Twig_Node_Expression_Binary_Matches');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class GreaterEqualBinary extends AbstractBinary
{
    public function operator(Compiler $compiler)
    {
        return $compiler->raw('>=');
    }
}

class_alias('Twig\Node\Expression\Binary\GreaterEqualBinary', 'Twig_Node_Expression_Binary_GreaterEqual');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;
use Twig\Node\Expression\AbstractExpression;

abstract class AbstractBinary extends AbstractExpression
{
    public function __construct(\Twig_NodeInterface $left, \Twig_NodeInterface $right, $lineno)
    {
        parent::__construct(['left' => $left, 'right' => $right], [], $lineno);
    }

    public function compile(Compiler $compiler)
    {
        $compiler
            ->raw('(')
            ->subcompile($this->getNode('left'))
            ->raw(' ')
        ;
        $this->operator($compiler);
        $compiler
            ->raw(' ')
            ->subcompile($this->getNode('right'))
            ->raw(')')
        ;
    }

    abstract public function operator(Compiler $compiler);
}

class_alias('Twig\Node\Expression\Binary\AbstractBinary', 'Twig_Node_Expression_Binary');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class ModBinary extends AbstractBinary
{
    public function operator(Compiler $compiler)
    {
        return $compiler->raw('%');
    }
}

class_alias('Twig\Node\Expression\Binary\ModBinary', 'Twig_Node_Expression_Binary_Mod');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class SubBinary extends AbstractBinary
{
    public function operator(Compiler $compiler)
    {
        return $compiler->raw('-');
    }
}

class_alias('Twig\Node\Expression\Binary\SubBinary', 'Twig_Node_Expression_Binary_Sub');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class BitwiseOrBinary extends AbstractBinary
{
    public function operator(Compiler $compiler)
    {
        return $compiler->raw('|');
    }
}

class_alias('Twig\Node\Expression\Binary\BitwiseOrBinary', 'Twig_Node_Expression_Binary_BitwiseOr');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class FloorDivBinary extends AbstractBinary
{
    public function compile(Compiler $compiler)
    {
        $compiler->raw('(int) floor(');
        parent::compile($compiler);
        $compiler->raw(')');
    }

    public function operator(Compiler $compiler)
    {
        return $compiler->raw('/');
    }
}

class_alias('Twig\Node\Expression\Binary\FloorDivBinary', 'Twig_Node_Expression_Binary_FloorDiv');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class StartsWithBinary extends AbstractBinary
{
    public function compile(Compiler $compiler)
    {
        $left = $compiler->getVarName();
        $right = $compiler->getVarName();
        $compiler
            ->raw(sprintf('(is_string($%s = ', $left))
            ->subcompile($this->getNode('left'))
            ->raw(sprintf(') && is_string($%s = ', $right))
            ->subcompile($this->getNode('right'))
            ->raw(sprintf(') && (\'\' === $%2$s || 0 === strpos($%1$s, $%2$s)))', $left, $right))
        ;
    }

    public function operator(Compiler $compiler)
    {
        return $compiler->raw('');
    }
}

class_alias('Twig\Node\Expression\Binary\StartsWithBinary', 'Twig_Node_Expression_Binary_StartsWith');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class LessEqualBinary extends AbstractBinary
{
    public function operator(Compiler $compiler)
    {
        return $compiler->raw('<=');
    }
}

class_alias('Twig\Node\Expression\Binary\LessEqualBinary', 'Twig_Node_Expression_Binary_LessEqual');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class InBinary extends AbstractBinary
{
    public function compile(Compiler $compiler)
    {
        $compiler
            ->raw('twig_in_filter(')
            ->subcompile($this->getNode('left'))
            ->raw(', ')
            ->subcompile($this->getNode('right'))
            ->raw(')')
        ;
    }

    public function operator(Compiler $compiler)
    {
        return $compiler->raw('in');
    }
}

class_alias('Twig\Node\Expression\Binary\InBinary', 'Twig_Node_Expression_Binary_In');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class LessBinary extends AbstractBinary
{
    public function operator(Compiler $compiler)
    {
        return $compiler->raw('<');
    }
}

class_alias('Twig\Node\Expression\Binary\LessBinary', 'Twig_Node_Expression_Binary_Less');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class AddBinary extends AbstractBinary
{
    public function operator(Compiler $compiler)
    {
        return $compiler->raw('+');
    }
}

class_alias('Twig\Node\Expression\Binary\AddBinary', 'Twig_Node_Expression_Binary_Add');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class EqualBinary extends AbstractBinary
{
    public function operator(Compiler $compiler)
    {
        return $compiler->raw('==');
    }
}

class_alias('Twig\Node\Expression\Binary\EqualBinary', 'Twig_Node_Expression_Binary_Equal');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class BitwiseXorBinary extends AbstractBinary
{
    public function operator(Compiler $compiler)
    {
        return $compiler->raw('^');
    }
}

class_alias('Twig\Node\Expression\Binary\BitwiseXorBinary', 'Twig_Node_Expression_Binary_BitwiseXor');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class ConcatBinary extends AbstractBinary
{
    public function operator(Compiler $compiler)
    {
        return $compiler->raw('.');
    }
}

class_alias('Twig\Node\Expression\Binary\ConcatBinary', 'Twig_Node_Expression_Binary_Concat');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class AndBinary extends AbstractBinary
{
    public function operator(Compiler $compiler)
    {
        return $compiler->raw('&&');
    }
}

class_alias('Twig\Node\Expression\Binary\AndBinary', 'Twig_Node_Expression_Binary_And');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class BitwiseAndBinary extends AbstractBinary
{
    public function operator(Compiler $compiler)
    {
        return $compiler->raw('&');
    }
}

class_alias('Twig\Node\Expression\Binary\BitwiseAndBinary', 'Twig_Node_Expression_Binary_BitwiseAnd');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class NotEqualBinary extends AbstractBinary
{
    public function operator(Compiler $compiler)
    {
        return $compiler->raw('!=');
    }
}

class_alias('Twig\Node\Expression\Binary\NotEqualBinary', 'Twig_Node_Expression_Binary_NotEqual');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class PowerBinary extends AbstractBinary
{
    public function compile(Compiler $compiler)
    {
        if (\PHP_VERSION_ID >= 50600) {
            return parent::compile($compiler);
        }

        $compiler
            ->raw('pow(')
            ->subcompile($this->getNode('left'))
            ->raw(', ')
            ->subcompile($this->getNode('right'))
            ->raw(')')
        ;
    }

    public function operator(Compiler $compiler)
    {
        return $compiler->raw('**');
    }
}

class_alias('Twig\Node\Expression\Binary\PowerBinary', 'Twig_Node_Expression_Binary_Power');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class DivBinary extends AbstractBinary
{
    public function operator(Compiler $compiler)
    {
        return $compiler->raw('/');
    }
}

class_alias('Twig\Node\Expression\Binary\DivBinary', 'Twig_Node_Expression_Binary_Div');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class OrBinary extends AbstractBinary
{
    public function operator(Compiler $compiler)
    {
        return $compiler->raw('||');
    }
}

class_alias('Twig\Node\Expression\Binary\OrBinary', 'Twig_Node_Expression_Binary_Or');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Binary;

use Twig\Compiler;

class GreaterBinary extends AbstractBinary
{
    public function operator(Compiler $compiler)
    {
        return $compiler->raw('>');
    }
}

class_alias('Twig\Node\Expression\Binary\GreaterBinary', 'Twig_Node_Expression_Binary_Greater');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression\Filter;

use Twig\Compiler;
use Twig\Node\Expression\ConditionalExpression;
use Twig\Node\Expression\ConstantExpression;
use Twig\Node\Expression\FilterExpression;
use Twig\Node\Expression\GetAttrExpression;
use Twig\Node\Expression\NameExpression;
use Twig\Node\Expression\Test\DefinedTest;
use Twig\Node\Node;

/**
 * Returns the value or the default value when it is undefined or empty.
 *
 *  {{ var.foo|default('foo item on var is not defined') }}
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class DefaultFilter extends FilterExpression
{
    public function __construct(\Twig_NodeInterface $node, ConstantExpression $filterName, \Twig_NodeInterface $arguments, $lineno, $tag = null)
    {
        $default = new FilterExpression($node, new ConstantExpression('default', $node->getTemplateLine()), $arguments, $node->getTemplateLine());

        if ('default' === $filterName->getAttribute('value') && ($node instanceof NameExpression || $node instanceof GetAttrExpression)) {
            $test = new DefinedTest(clone $node, 'defined', new Node(), $node->getTemplateLine());
            $false = \count($arguments) ? $arguments->getNode(0) : new ConstantExpression('', $node->getTemplateLine());

            $node = new ConditionalExpression($test, $default, $false, $node->getTemplateLine());
        } else {
            $node = $default;
        }

        parent::__construct($node, $filterName, $arguments, $lineno, $tag);
    }

    public function compile(Compiler $compiler)
    {
        $compiler->subcompile($this->getNode('node'));
    }
}

class_alias('Twig\Node\Expression\Filter\DefaultFilter', 'Twig_Node_Expression_Filter_Default');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression;

use Twig\Compiler;

class NameExpression extends AbstractExpression
{
    protected $specialVars = [
        '_self' => '$this',
        '_context' => '$context',
        '_charset' => '$this->env->getCharset()',
    ];

    public function __construct($name, $lineno)
    {
        parent::__construct([], ['name' => $name, 'is_defined_test' => false, 'ignore_strict_check' => false, 'always_defined' => false], $lineno);
    }

    public function compile(Compiler $compiler)
    {
        $name = $this->getAttribute('name');

        $compiler->addDebugInfo($this);

        if ($this->getAttribute('is_defined_test')) {
            if ($this->isSpecial()) {
                $compiler->repr(true);
            } elseif (\PHP_VERSION_ID >= 700400) {
                $compiler
                    ->raw('array_key_exists(')
                    ->string($name)
                    ->raw(', $context)')
                ;
            } else {
                $compiler
                    ->raw('(isset($context[')
                    ->string($name)
                    ->raw(']) || array_key_exists(')
                    ->string($name)
                    ->raw(', $context))')
                ;
            }
        } elseif ($this->isSpecial()) {
            $compiler->raw($this->specialVars[$name]);
        } elseif ($this->getAttribute('always_defined')) {
            $compiler
                ->raw('$context[')
                ->string($name)
                ->raw(']')
            ;
        } else {
            if (\PHP_VERSION_ID >= 70000) {
                // use PHP 7 null coalescing operator
                $compiler
                    ->raw('($context[')
                    ->string($name)
                    ->raw('] ?? ')
                ;

                if ($this->getAttribute('ignore_strict_check') || !$compiler->getEnvironment()->isStrictVariables()) {
                    $compiler->raw('null)');
                } else {
                    $compiler->raw('$this->getContext($context, ')->string($name)->raw('))');
                }
            } elseif (\PHP_VERSION_ID >= 50400) {
                // PHP 5.4 ternary operator performance was optimized
                $compiler
                    ->raw('(isset($context[')
                    ->string($name)
                    ->raw(']) ? $context[')
                    ->string($name)
                    ->raw('] : ')
                ;

                if ($this->getAttribute('ignore_strict_check') || !$compiler->getEnvironment()->isStrictVariables()) {
                    $compiler->raw('null)');
                } else {
                    $compiler->raw('$this->getContext($context, ')->string($name)->raw('))');
                }
            } else {
                $compiler
                    ->raw('$this->getContext($context, ')
                    ->string($name)
                ;

                if ($this->getAttribute('ignore_strict_check')) {
                    $compiler->raw(', true');
                }

                $compiler
                    ->raw(')')
                ;
            }
        }
    }

    public function isSpecial()
    {
        return isset($this->specialVars[$this->getAttribute('name')]);
    }

    public function isSimple()
    {
        return !$this->isSpecial() && !$this->getAttribute('is_defined_test');
    }
}

class_alias('Twig\Node\Expression\NameExpression', 'Twig_Node_Expression_Name');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression;

use Twig\Compiler;

class ConditionalExpression extends AbstractExpression
{
    public function __construct(AbstractExpression $expr1, AbstractExpression $expr2, AbstractExpression $expr3, $lineno)
    {
        parent::__construct(['expr1' => $expr1, 'expr2' => $expr2, 'expr3' => $expr3], [], $lineno);
    }

    public function compile(Compiler $compiler)
    {
        $compiler
            ->raw('((')
            ->subcompile($this->getNode('expr1'))
            ->raw(') ? (')
            ->subcompile($this->getNode('expr2'))
            ->raw(') : (')
            ->subcompile($this->getNode('expr3'))
            ->raw('))')
        ;
    }
}

class_alias('Twig\Node\Expression\ConditionalExpression', 'Twig_Node_Expression_Conditional');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node\Expression;

use Twig\Compiler;
use Twig\Template;

class GetAttrExpression extends AbstractExpression
{
    public function __construct(AbstractExpression $node, AbstractExpression $attribute, AbstractExpression $arguments = null, $type, $lineno)
    {
        $nodes = ['node' => $node, 'attribute' => $attribute];
        if (null !== $arguments) {
            $nodes['arguments'] = $arguments;
        }

        parent::__construct($nodes, ['type' => $type, 'is_defined_test' => false, 'ignore_strict_check' => false, 'disable_c_ext' => false], $lineno);
    }

    public function compile(Compiler $compiler)
    {
        if ($this->getAttribute('disable_c_ext')) {
            @trigger_error(sprintf('Using the "disable_c_ext" attribute on %s is deprecated since version 1.30 and will be removed in 2.0.', __CLASS__), E_USER_DEPRECATED);
        }

        if (\function_exists('twig_template_get_attributes') && !$this->getAttribute('disable_c_ext')) {
            $compiler->raw('twig_template_get_attributes($this, ');
        } else {
            $compiler->raw('$this->getAttribute(');
        }

        if ($this->getAttribute('ignore_strict_check')) {
            $this->getNode('node')->setAttribute('ignore_strict_check', true);
        }

        $compiler->subcompile($this->getNode('node'));

        $compiler->raw(', ')->subcompile($this->getNode('attribute'));

        // only generate optional arguments when needed (to make generated code more readable)
        $needFourth = $this->getAttribute('ignore_strict_check');
        $needThird = $needFourth || $this->getAttribute('is_defined_test');
        $needSecond = $needThird || Template::ANY_CALL !== $this->getAttribute('type');
        $needFirst = $needSecond || $this->hasNode('arguments');

        if ($needFirst) {
            if ($this->hasNode('arguments')) {
                $compiler->raw(', ')->subcompile($this->getNode('arguments'));
            } else {
                $compiler->raw(', []');
            }
        }

        if ($needSecond) {
            $compiler->raw(', ')->repr($this->getAttribute('type'));
        }

        if ($needThird) {
            $compiler->raw(', ')->repr($this->getAttribute('is_defined_test'));
        }

        if ($needFourth) {
            $compiler->raw(', ')->repr($this->getAttribute('ignore_strict_check'));
        }

        $compiler->raw(')');
    }
}

class_alias('Twig\Node\Expression\GetAttrExpression', 'Twig_Node_Expression_GetAttr');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;
use Twig\Node\Expression\AbstractExpression;

/**
 * Checks if casting an expression to __toString() is allowed by the sandbox.
 *
 * For instance, when there is a simple Print statement, like {{ article }},
 * and if the sandbox is enabled, we need to check that the __toString()
 * method is allowed if 'article' is an object. The same goes for {{ article|upper }}
 * or {{ random(article) }}
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class CheckToStringNode extends AbstractExpression
{
    public function __construct(AbstractExpression $expr)
    {
        parent::__construct(['expr' => $expr], [], $expr->getTemplateLine(), $expr->getNodeTag());
    }

    public function compile(Compiler $compiler)
    {
        $compiler
            ->raw('$this->sandbox->ensureToStringAllowed(')
            ->subcompile($this->getNode('expr'))
            ->raw(')')
        ;
    }
}
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;

/**
 * Represents an if node.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class IfNode extends Node
{
    public function __construct(\Twig_NodeInterface $tests, \Twig_NodeInterface $else = null, $lineno, $tag = null)
    {
        $nodes = ['tests' => $tests];
        if (null !== $else) {
            $nodes['else'] = $else;
        }

        parent::__construct($nodes, [], $lineno, $tag);
    }

    public function compile(Compiler $compiler)
    {
        $compiler->addDebugInfo($this);
        for ($i = 0, $count = \count($this->getNode('tests')); $i < $count; $i += 2) {
            if ($i > 0) {
                $compiler
                    ->outdent()
                    ->write('} elseif (')
                ;
            } else {
                $compiler
                    ->write('if (')
                ;
            }

            $compiler
                ->subcompile($this->getNode('tests')->getNode($i))
                ->raw(") {\n")
                ->indent()
                ->subcompile($this->getNode('tests')->getNode($i + 1))
            ;
        }

        if ($this->hasNode('else')) {
            $compiler
                ->outdent()
                ->write("} else {\n")
                ->indent()
                ->subcompile($this->getNode('else'))
            ;
        }

        $compiler
            ->outdent()
            ->write("}\n");
    }
}

class_alias('Twig\Node\IfNode', 'Twig_Node_If');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;
use Twig\Node\Expression\AbstractExpression;
use Twig\Node\Expression\ConstantExpression;

/**
 * Represents an embed node.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class EmbedNode extends IncludeNode
{
    // we don't inject the module to avoid node visitors to traverse it twice (as it will be already visited in the main module)
    public function __construct($name, $index, AbstractExpression $variables = null, $only = false, $ignoreMissing = false, $lineno, $tag = null)
    {
        parent::__construct(new ConstantExpression('not_used', $lineno), $variables, $only, $ignoreMissing, $lineno, $tag);

        $this->setAttribute('name', $name);
        // to be removed in 2.0, used name instead
        $this->setAttribute('filename', $name);
        $this->setAttribute('index', $index);
    }

    protected function addGetTemplate(Compiler $compiler)
    {
        $compiler
            ->write('$this->loadTemplate(')
            ->string($this->getAttribute('name'))
            ->raw(', ')
            ->repr($this->getTemplateName())
            ->raw(', ')
            ->repr($this->getTemplateLine())
            ->raw(', ')
            ->string($this->getAttribute('index'))
            ->raw(')')
        ;
    }
}

class_alias('Twig\Node\EmbedNode', 'Twig_Node_Embed');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;
use Twig\Node\Expression\AbstractExpression;

/**
 * Represents a node that outputs an expression.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class PrintNode extends Node implements NodeOutputInterface
{
    public function __construct(AbstractExpression $expr, $lineno, $tag = null)
    {
        parent::__construct(['expr' => $expr], [], $lineno, $tag);
    }

    public function compile(Compiler $compiler)
    {
        $compiler
            ->addDebugInfo($this)
            ->write('echo ')
            ->subcompile($this->getNode('expr'))
            ->raw(";\n")
        ;
    }
}

class_alias('Twig\Node\PrintNode', 'Twig_Node_Print');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;
use Twig\Node\Expression\AbstractExpression;
use Twig\Node\Expression\ConstantExpression;

/**
 * Represents a deprecated node.
 *
 * @author Yonel Ceruto <yonelceruto@gmail.com>
 */
class DeprecatedNode extends Node
{
    public function __construct(AbstractExpression $expr, $lineno, $tag = null)
    {
        parent::__construct(['expr' => $expr], [], $lineno, $tag);
    }

    public function compile(Compiler $compiler)
    {
        $compiler->addDebugInfo($this);

        $expr = $this->getNode('expr');

        if ($expr instanceof ConstantExpression) {
            $compiler->write('@trigger_error(')
                ->subcompile($expr);
        } else {
            $varName = $compiler->getVarName();
            $compiler->write(sprintf('$%s = ', $varName))
                ->subcompile($expr)
                ->raw(";\n")
                ->write(sprintf('@trigger_error($%s', $varName));
        }

        $compiler
            ->raw('.')
            ->string(sprintf(' ("%s" at line %d).', $this->getTemplateName(), $this->getTemplateLine()))
            ->raw(", E_USER_DEPRECATED);\n")
        ;
    }
}

class_alias('Twig\Node\DeprecatedNode', 'Twig_Node_Deprecated');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Node;

use Twig\Compiler;

/**
 * @internal
 */
class SetTempNode extends Node
{
    public function __construct($name, $lineno)
    {
        parent::__construct([], ['name' => $name], $lineno);
    }

    public function compile(Compiler $compiler)
    {
        $name = $this->getAttribute('name');
        $compiler
            ->addDebugInfo($this)
            ->write('if (isset($context[')
            ->string($name)
            ->raw('])) { $_')
            ->raw($name)
            ->raw('_ = $context[')
            ->repr($name)
            ->raw(']; } else { $_')
            ->raw($name)
            ->raw("_ = null; }\n")
        ;
    }
}

class_alias('Twig\Node\SetTempNode', 'Twig_Node_SetTemp');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig;

use Twig\Error\Error;
use Twig\Error\LoaderError;
use Twig\Error\RuntimeError;

/**
 * Default base class for compiled templates.
 *
 * This class is an implementation detail of how template compilation currently
 * works, which might change. It should never be used directly. Use $twig->load()
 * instead, which returns an instance of \Twig\TemplateWrapper.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @internal
 */
abstract class Template implements \Twig_TemplateInterface
{
    /**
     * @internal
     */
    protected static $cache = [];

    protected $parent;
    protected $parents = [];
    protected $env;
    protected $blocks = [];
    protected $traits = [];
    protected $sandbox;

    public function __construct(Environment $env)
    {
        $this->env = $env;
    }

    /**
     * @internal this method will be removed in 2.0 and is only used internally to provide an upgrade path from 1.x to 2.0
     */
    public function __toString()
    {
        return $this->getTemplateName();
    }

    /**
     * Returns the template name.
     *
     * @return string The template name
     */
    abstract public function getTemplateName();

    /**
     * Returns debug information about the template.
     *
     * @return array Debug information
     */
    public function getDebugInfo()
    {
        return [];
    }

    /**
     * Returns the template source code.
     *
     * @return string The template source code
     *
     * @deprecated since 1.27 (to be removed in 2.0). Use getSourceContext() instead
     */
    public function getSource()
    {
        @trigger_error('The '.__METHOD__.' method is deprecated since version 1.27 and will be removed in 2.0. Use getSourceContext() instead.', E_USER_DEPRECATED);

        return '';
    }

    /**
     * Returns information about the original template source code.
     *
     * @return Source
     */
    public function getSourceContext()
    {
        return new Source('', $this->getTemplateName());
    }

    /**
     * @deprecated since 1.20 (to be removed in 2.0)
     */
    public function getEnvironment()
    {
        @trigger_error('The '.__METHOD__.' method is deprecated since version 1.20 and will be removed in 2.0.', E_USER_DEPRECATED);

        return $this->env;
    }

    /**
     * Returns the parent template.
     *
     * This method is for internal use only and should never be called
     * directly.
     *
     * @param array $context
     *
     * @return \Twig_TemplateInterface|TemplateWrapper|false The parent template or false if there is no parent
     *
     * @internal
     */
    public function getParent(array $context)
    {
        if (null !== $this->parent) {
            return $this->parent;
        }

        try {
            $parent = $this->doGetParent($context);

            if (false === $parent) {
                return false;
            }

            if ($parent instanceof self || $parent instanceof TemplateWrapper) {
                return $this->parents[$parent->getSourceContext()->getName()] = $parent;
            }

            if (!isset($this->parents[$parent])) {
                $this->parents[$parent] = $this->loadTemplate($parent);
            }
        } catch (LoaderError $e) {
            $e->setSourceContext(null);
            $e->guess();

            throw $e;
        }

        return $this->parents[$parent];
    }

    protected function doGetParent(array $context)
    {
        return false;
    }

    public function isTraitable()
    {
        return true;
    }

    /**
     * Displays a parent block.
     *
     * This method is for internal use only and should never be called
     * directly.
     *
     * @param string $name    The block name to display from the parent
     * @param array  $context The context
     * @param array  $blocks  The current set of blocks
     */
    public function displayParentBlock($name, array $context, array $blocks = [])
    {
        $name = (string) $name;

        if (isset($this->traits[$name])) {
            $this->traits[$name][0]->displayBlock($name, $context, $blocks, false);
        } elseif (false !== $parent = $this->getParent($context)) {
            $parent->displayBlock($name, $context, $blocks, false);
        } else {
            throw new RuntimeError(sprintf('The template has no parent and no traits defining the "%s" block.', $name), -1, $this->getSourceContext());
        }
    }

    /**
     * Displays a block.
     *
     * This method is for internal use only and should never be called
     * directly.
     *
     * @param string $name      The block name to display
     * @param array  $context   The context
     * @param array  $blocks    The current set of blocks
     * @param bool   $useBlocks Whether to use the current set of blocks
     */
    public function displayBlock($name, array $context, array $blocks = [], $useBlocks = true)
    {
        $name = (string) $name;

        if ($useBlocks && isset($blocks[$name])) {
            $template = $blocks[$name][0];
            $block = $blocks[$name][1];
        } elseif (isset($this->blocks[$name])) {
            $template = $this->blocks[$name][0];
            $block = $this->blocks[$name][1];
        } else {
            $template = null;
            $block = null;
        }

        // avoid RCEs when sandbox is enabled
        if (null !== $template && !$template instanceof self) {
            throw new \LogicException('A block must be a method on a \Twig\Template instance.');
        }

        if (null !== $template) {
            try {
                $template->$block($context, $blocks);
            } catch (Error $e) {
                if (!$e->getSourceContext()) {
                    $e->setSourceContext($template->getSourceContext());
                }

                // this is mostly useful for \Twig\Error\LoaderError exceptions
                // see \Twig\Error\LoaderError
                if (-1 === $e->getTemplateLine()) {
                    $e->guess();
                }

                throw $e;
            } catch (\Exception $e) {
                $e = new RuntimeError(sprintf('An exception has been thrown during the rendering of a template ("%s").', $e->getMessage()), -1, $template->getSourceContext(), $e);
                $e->guess();

                throw $e;
            }
        } elseif (false !== $parent = $this->getParent($context)) {
            $parent->displayBlock($name, $context, array_merge($this->blocks, $blocks), false);
        } else {
            @trigger_error(sprintf('Silent display of undefined block "%s" in template "%s" is deprecated since version 1.29 and will throw an exception in 2.0. Use the "block(\'%s\') is defined" expression to test for block existence.', $name, $this->getTemplateName(), $name), E_USER_DEPRECATED);
        }
    }

    /**
     * Renders a parent block.
     *
     * This method is for internal use only and should never be called
     * directly.
     *
     * @param string $name    The block name to render from the parent
     * @param array  $context The context
     * @param array  $blocks  The current set of blocks
     *
     * @return string The rendered block
     */
    public function renderParentBlock($name, array $context, array $blocks = [])
    {
        if ($this->env->isDebug()) {
            ob_start();
        } else {
            ob_start(function () { return ''; });
        }
        $this->displayParentBlock($name, $context, $blocks);

        return ob_get_clean();
    }

    /**
     * Renders a block.
     *
     * This method is for internal use only and should never be called
     * directly.
     *
     * @param string $name      The block name to render
     * @param array  $context   The context
     * @param array  $blocks    The current set of blocks
     * @param bool   $useBlocks Whether to use the current set of blocks
     *
     * @return string The rendered block
     */
    public function renderBlock($name, array $context, array $blocks = [], $useBlocks = true)
    {
        if ($this->env->isDebug()) {
            ob_start();
        } else {
            ob_start(function () { return ''; });
        }
        $this->displayBlock($name, $context, $blocks, $useBlocks);

        return ob_get_clean();
    }

    /**
     * Returns whether a block exists or not in the current context of the template.
     *
     * This method checks blocks defined in the current template
     * or defined in "used" traits or defined in parent templates.
     *
     * @param string $name    The block name
     * @param array  $context The context
     * @param array  $blocks  The current set of blocks
     *
     * @return bool true if the block exists, false otherwise
     */
    public function hasBlock($name, array $context = null, array $blocks = [])
    {
        if (null === $context) {
            @trigger_error('The '.__METHOD__.' method is internal and should never be called; calling it directly is deprecated since version 1.28 and won\'t be possible anymore in 2.0.', E_USER_DEPRECATED);

            return isset($this->blocks[(string) $name]);
        }

        if (isset($blocks[$name])) {
            return $blocks[$name][0] instanceof self;
        }

        if (isset($this->blocks[$name])) {
            return true;
        }

        if (false !== $parent = $this->getParent($context)) {
            return $parent->hasBlock($name, $context);
        }

        return false;
    }

    /**
     * Returns all block names in the current context of the template.
     *
     * This method checks blocks defined in the current template
     * or defined in "used" traits or defined in parent templates.
     *
     * @param array $context The context
     * @param array $blocks  The current set of blocks
     *
     * @return array An array of block names
     */
    public function getBlockNames(array $context = null, array $blocks = [])
    {
        if (null === $context) {
            @trigger_error('The '.__METHOD__.' method is internal and should never be called; calling it directly is deprecated since version 1.28 and won\'t be possible anymore in 2.0.', E_USER_DEPRECATED);

            return array_keys($this->blocks);
        }

        $names = array_merge(array_keys($blocks), array_keys($this->blocks));

        if (false !== $parent = $this->getParent($context)) {
            $names = array_merge($names, $parent->getBlockNames($context));
        }

        return array_unique($names);
    }

    /**
     * @return Template|TemplateWrapper
     */
    protected function loadTemplate($template, $templateName = null, $line = null, $index = null)
    {
        try {
            if (\is_array($template)) {
                return $this->env->resolveTemplate($template);
            }

            if ($template instanceof self || $template instanceof TemplateWrapper) {
                return $template;
            }

            if ($template === $this->getTemplateName()) {
                $class = \get_class($this);
                if (false !== $pos = strrpos($class, '___', -1)) {
                    $class = substr($class, 0, $pos);
                }

                return $this->env->loadClass($class, $template, $index);
            }

            return $this->env->loadTemplate($template, $index);
        } catch (Error $e) {
            if (!$e->getSourceContext()) {
                $e->setSourceContext($templateName ? new Source('', $templateName) : $this->getSourceContext());
            }

            if ($e->getTemplateLine() > 0) {
                throw $e;
            }

            if (!$line) {
                $e->guess();
            } else {
                $e->setTemplateLine($line);
            }

            throw $e;
        }
    }

    /**
     * @internal
     *
     * @return Template
     */
    protected function unwrap()
    {
        return $this;
    }

    /**
     * Returns all blocks.
     *
     * This method is for internal use only and should never be called
     * directly.
     *
     * @return array An array of blocks
     */
    public function getBlocks()
    {
        return $this->blocks;
    }

    public function display(array $context, array $blocks = [])
    {
        $this->displayWithErrorHandling($this->env->mergeGlobals($context), array_merge($this->blocks, $blocks));
    }

    public function render(array $context)
    {
        $level = ob_get_level();
        if ($this->env->isDebug()) {
            ob_start();
        } else {
            ob_start(function () { return ''; });
        }
        try {
            $this->display($context);
        } catch (\Exception $e) {
            while (ob_get_level() > $level) {
                ob_end_clean();
            }

            throw $e;
        } catch (\Throwable $e) {
            while (ob_get_level() > $level) {
                ob_end_clean();
            }

            throw $e;
        }

        return ob_get_clean();
    }

    protected function displayWithErrorHandling(array $context, array $blocks = [])
    {
        try {
            $this->doDisplay($context, $blocks);
        } catch (Error $e) {
            if (!$e->getSourceContext()) {
                $e->setSourceContext($this->getSourceContext());
            }

            // this is mostly useful for \Twig\Error\LoaderError exceptions
            // see \Twig\Error\LoaderError
            if (-1 === $e->getTemplateLine()) {
                $e->guess();
            }

            throw $e;
        } catch (\Exception $e) {
            $e = new RuntimeError(sprintf('An exception has been thrown during the rendering of a template ("%s").', $e->getMessage()), -1, $this->getSourceContext(), $e);
            $e->guess();

            throw $e;
        }
    }

    /**
     * Auto-generated method to display the template with the given context.
     *
     * @param array $context An array of parameters to pass to the template
     * @param array $blocks  An array of blocks to pass to the template
     */
    abstract protected function doDisplay(array $context, array $blocks = []);

    /**
     * Returns a variable from the context.
     *
     * This method is for internal use only and should never be called
     * directly.
     *
     * This method should not be overridden in a sub-class as this is an
     * implementation detail that has been introduced to optimize variable
     * access for versions of PHP before 5.4. This is not a way to override
     * the way to get a variable value.
     *
     * @param array  $context           The context
     * @param string $item              The variable to return from the context
     * @param bool   $ignoreStrictCheck Whether to ignore the strict variable check or not
     *
     * @return mixed The content of the context variable
     *
     * @throws RuntimeError if the variable does not exist and Twig is running in strict mode
     *
     * @internal
     */
    final protected function getContext($context, $item, $ignoreStrictCheck = false)
    {
        if (!\array_key_exists($item, $context)) {
            if ($ignoreStrictCheck || !$this->env->isStrictVariables()) {
                return;
            }

            throw new RuntimeError(sprintf('Variable "%s" does not exist.', $item), -1, $this->getSourceContext());
        }

        return $context[$item];
    }

    /**
     * Returns the attribute value for a given array/object.
     *
     * @param mixed  $object            The object or array from where to get the item
     * @param mixed  $item              The item to get from the array or object
     * @param array  $arguments         An array of arguments to pass if the item is an object method
     * @param string $type              The type of attribute (@see \Twig\Template constants)
     * @param bool   $isDefinedTest     Whether this is only a defined check
     * @param bool   $ignoreStrictCheck Whether to ignore the strict attribute check or not
     *
     * @return mixed The attribute value, or a Boolean when $isDefinedTest is true, or null when the attribute is not set and $ignoreStrictCheck is true
     *
     * @throws RuntimeError if the attribute does not exist and Twig is running in strict mode and $isDefinedTest is false
     *
     * @internal
     */
    protected function getAttribute($object, $item, array $arguments = [], $type = self::ANY_CALL, $isDefinedTest = false, $ignoreStrictCheck = false)
    {
        // array
        if (self::METHOD_CALL !== $type) {
            $arrayItem = \is_bool($item) || \is_float($item) ? (int) $item : $item;

            if (((\is_array($object) || $object instanceof \ArrayObject) && (isset($object[$arrayItem]) || \array_key_exists($arrayItem, (array) $object)))
                || ($object instanceof \ArrayAccess && isset($object[$arrayItem]))
            ) {
                if ($isDefinedTest) {
                    return true;
                }

                return $object[$arrayItem];
            }

            if (self::ARRAY_CALL === $type || !\is_object($object)) {
                if ($isDefinedTest) {
                    return false;
                }

                if ($ignoreStrictCheck || !$this->env->isStrictVariables()) {
                    return;
                }

                if ($object instanceof \ArrayAccess) {
                    $message = sprintf('Key "%s" in object with ArrayAccess of class "%s" does not exist.', $arrayItem, \get_class($object));
                } elseif (\is_object($object)) {
                    $message = sprintf('Impossible to access a key "%s" on an object of class "%s" that does not implement ArrayAccess interface.', $item, \get_class($object));
                } elseif (\is_array($object)) {
                    if (empty($object)) {
                        $message = sprintf('Key "%s" does not exist as the array is empty.', $arrayItem);
                    } else {
                        $message = sprintf('Key "%s" for array with keys "%s" does not exist.', $arrayItem, implode(', ', array_keys($object)));
                    }
                } elseif (self::ARRAY_CALL === $type) {
                    if (null === $object) {
                        $message = sprintf('Impossible to access a key ("%s") on a null variable.', $item);
                    } else {
                        $message = sprintf('Impossible to access a key ("%s") on a %s variable ("%s").', $item, \gettype($object), $object);
                    }
                } elseif (null === $object) {
                    $message = sprintf('Impossible to access an attribute ("%s") on a null variable.', $item);
                } else {
                    $message = sprintf('Impossible to access an attribute ("%s") on a %s variable ("%s").', $item, \gettype($object), $object);
                }

                throw new RuntimeError($message, -1, $this->getSourceContext());
            }
        }

        if (!\is_object($object)) {
            if ($isDefinedTest) {
                return false;
            }

            if ($ignoreStrictCheck || !$this->env->isStrictVariables()) {
                return;
            }

            if (null === $object) {
                $message = sprintf('Impossible to invoke a method ("%s") on a null variable.', $item);
            } elseif (\is_array($object)) {
                $message = sprintf('Impossible to invoke a method ("%s") on an array.', $item);
            } else {
                $message = sprintf('Impossible to invoke a method ("%s") on a %s variable ("%s").', $item, \gettype($object), $object);
            }

            throw new RuntimeError($message, -1, $this->getSourceContext());
        }

        // object property
        if (self::METHOD_CALL !== $type && !$object instanceof self) { // \Twig\Template does not have public properties, and we don't want to allow access to internal ones
            if (isset($object->$item) || \array_key_exists((string) $item, (array) $object)) {
                if ($isDefinedTest) {
                    return true;
                }

                if ($this->env->hasExtension('\Twig\Extension\SandboxExtension')) {
                    $this->env->getExtension('\Twig\Extension\SandboxExtension')->checkPropertyAllowed($object, $item);
                }

                return $object->$item;
            }
        }

        $class = \get_class($object);

        // object method
        if (!isset(self::$cache[$class])) {
            // get_class_methods returns all methods accessible in the scope, but we only want public ones to be accessible in templates
            if ($object instanceof self) {
                $ref = new \ReflectionClass($class);
                $methods = [];

                foreach ($ref->getMethods(\ReflectionMethod::IS_PUBLIC) as $refMethod) {
                    // Accessing the environment from templates is forbidden to prevent untrusted changes to the environment
                    if ('getenvironment' !== strtolower($refMethod->name)) {
                        $methods[] = $refMethod->name;
                    }
                }
            } else {
                $methods = get_class_methods($object);
            }
            // sort values to have consistent behavior, so that "get" methods win precedence over "is" methods
            sort($methods);

            $cache = [];

            foreach ($methods as $method) {
                $cache[$method] = $method;
                $cache[$lcName = strtolower($method)] = $method;

                if ('g' === $lcName[0] && 0 === strpos($lcName, 'get')) {
                    $name = substr($method, 3);
                    $lcName = substr($lcName, 3);
                } elseif ('i' === $lcName[0] && 0 === strpos($lcName, 'is')) {
                    $name = substr($method, 2);
                    $lcName = substr($lcName, 2);
                } else {
                    continue;
                }

                // skip get() and is() methods (in which case, $name is empty)
                if ($name) {
                    if (!isset($cache[$name])) {
                        $cache[$name] = $method;
                    }
                    if (!isset($cache[$lcName])) {
                        $cache[$lcName] = $method;
                    }
                }
            }
            self::$cache[$class] = $cache;
        }

        $call = false;
        if (isset(self::$cache[$class][$item])) {
            $method = self::$cache[$class][$item];
        } elseif (isset(self::$cache[$class][$lcItem = strtolower($item)])) {
            $method = self::$cache[$class][$lcItem];
        } elseif (isset(self::$cache[$class]['__call'])) {
            $method = $item;
            $call = true;
        } else {
            if ($isDefinedTest) {
                return false;
            }

            if ($ignoreStrictCheck || !$this->env->isStrictVariables()) {
                return;
            }

            throw new RuntimeError(sprintf('Neither the property "%1$s" nor one of the methods "%1$s()", "get%1$s()"/"is%1$s()" or "__call()" exist and have public access in class "%2$s".', $item, $class), -1, $this->getSourceContext());
        }

        if ($isDefinedTest) {
            return true;
        }

        if ($this->env->hasExtension('\Twig\Extension\SandboxExtension')) {
            $this->env->getExtension('\Twig\Extension\SandboxExtension')->checkMethodAllowed($object, $method);
        }

        // Some objects throw exceptions when they have __call, and the method we try
        // to call is not supported. If ignoreStrictCheck is true, we should return null.
        try {
            if (!$arguments) {
                $ret = $object->$method();
            } else {
                $ret = \call_user_func_array([$object, $method], $arguments);
            }
        } catch (\BadMethodCallException $e) {
            if ($call && ($ignoreStrictCheck || !$this->env->isStrictVariables())) {
                return;
            }
            throw $e;
        }

        // @deprecated in 1.28
        if ($object instanceof \Twig_TemplateInterface) {
            $self = $object->getTemplateName() === $this->getTemplateName();
            $message = sprintf('Calling "%s" on template "%s" from template "%s" is deprecated since version 1.28 and won\'t be supported anymore in 2.0.', $item, $object->getTemplateName(), $this->getTemplateName());
            if ('renderBlock' === $method || 'displayBlock' === $method) {
                $message .= sprintf(' Use block("%s"%s) instead).', $arguments[0], $self ? '' : ', template');
            } elseif ('hasBlock' === $method) {
                $message .= sprintf(' Use "block("%s"%s) is defined" instead).', $arguments[0], $self ? '' : ', template');
            } elseif ('render' === $method || 'display' === $method) {
                $message .= sprintf(' Use include("%s") instead).', $object->getTemplateName());
            }
            @trigger_error($message, E_USER_DEPRECATED);

            return '' === $ret ? '' : new Markup($ret, $this->env->getCharset());
        }

        return $ret;
    }
}

class_alias('Twig\Template', 'Twig_Template');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig;

use Twig\Node\Node;

/**
 * Represents a template function.
 *
 * @final
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class TwigFunction
{
    protected $name;
    protected $callable;
    protected $options;
    protected $arguments = [];

    public function __construct($name, $callable, array $options = [])
    {
        $this->name = $name;
        $this->callable = $callable;
        $this->options = array_merge([
            'needs_environment' => false,
            'needs_context' => false,
            'is_variadic' => false,
            'is_safe' => null,
            'is_safe_callback' => null,
            'node_class' => '\Twig\Node\Expression\FunctionExpression',
            'deprecated' => false,
            'alternative' => null,
        ], $options);
    }

    public function getName()
    {
        return $this->name;
    }

    public function getCallable()
    {
        return $this->callable;
    }

    public function getNodeClass()
    {
        return $this->options['node_class'];
    }

    public function setArguments($arguments)
    {
        $this->arguments = $arguments;
    }

    public function getArguments()
    {
        return $this->arguments;
    }

    public function needsEnvironment()
    {
        return $this->options['needs_environment'];
    }

    public function needsContext()
    {
        return $this->options['needs_context'];
    }

    public function getSafe(Node $functionArgs)
    {
        if (null !== $this->options['is_safe']) {
            return $this->options['is_safe'];
        }

        if (null !== $this->options['is_safe_callback']) {
            return \call_user_func($this->options['is_safe_callback'], $functionArgs);
        }

        return [];
    }

    public function isVariadic()
    {
        return $this->options['is_variadic'];
    }

    public function isDeprecated()
    {
        return (bool) $this->options['deprecated'];
    }

    public function getDeprecatedVersion()
    {
        return $this->options['deprecated'];
    }

    public function getAlternative()
    {
        return $this->options['alternative'];
    }
}

class_alias('Twig\TwigFunction', 'Twig_SimpleFunction');

// Ensure that the aliased name is loaded to keep BC for classes implementing the typehint with the old aliased name.
class_exists('Twig\Node\Node');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig;

use Twig\NodeVisitor\NodeVisitorInterface;

/**
 * A node traverser.
 *
 * It visits all nodes and their children and calls the given visitor for each.
 *
 * @final
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class NodeTraverser
{
    protected $env;
    protected $visitors = [];

    /**
     * @param NodeVisitorInterface[] $visitors
     */
    public function __construct(Environment $env, array $visitors = [])
    {
        $this->env = $env;
        foreach ($visitors as $visitor) {
            $this->addVisitor($visitor);
        }
    }

    public function addVisitor(NodeVisitorInterface $visitor)
    {
        $this->visitors[$visitor->getPriority()][] = $visitor;
    }

    /**
     * Traverses a node and calls the registered visitors.
     *
     * @return \Twig_NodeInterface
     */
    public function traverse(\Twig_NodeInterface $node)
    {
        ksort($this->visitors);
        foreach ($this->visitors as $visitors) {
            foreach ($visitors as $visitor) {
                $node = $this->traverseForVisitor($visitor, $node);
            }
        }

        return $node;
    }

    protected function traverseForVisitor(NodeVisitorInterface $visitor, \Twig_NodeInterface $node = null)
    {
        if (null === $node) {
            return;
        }

        $node = $visitor->enterNode($node, $this->env);

        foreach ($node as $k => $n) {
            if (null === $n) {
                continue;
            }

            if (false !== ($m = $this->traverseForVisitor($visitor, $n)) && null !== $m) {
                if ($m !== $n) {
                    $node->setNode($k, $m);
                }
            } else {
                $node->removeNode($k);
            }
        }

        return $visitor->leaveNode($node, $this->env);
    }
}

class_alias('Twig\NodeTraverser', 'Twig_NodeTraverser');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Error;

/**
 * Exception thrown when an error occurs during template loading.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class LoaderError extends Error
{
}

class_alias('Twig\Error\LoaderError', 'Twig_Error_Loader');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Error;

/**
 * Exception thrown when an error occurs at runtime.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class RuntimeError extends Error
{
}

class_alias('Twig\Error\RuntimeError', 'Twig_Error_Runtime');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Error;

use Twig\Source;
use Twig\Template;

/**
 * Twig base exception.
 *
 * This exception class and its children must only be used when
 * an error occurs during the loading of a template, when a syntax error
 * is detected in a template, or when rendering a template. Other
 * errors must use regular PHP exception classes (like when the template
 * cache directory is not writable for instance).
 *
 * To help debugging template issues, this class tracks the original template
 * name and line where the error occurred.
 *
 * Whenever possible, you must set these information (original template name
 * and line number) yourself by passing them to the constructor. If some or all
 * these information are not available from where you throw the exception, then
 * this class will guess them automatically (when the line number is set to -1
 * and/or the name is set to null). As this is a costly operation, this
 * can be disabled by passing false for both the name and the line number
 * when creating a new instance of this class.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class Error extends \Exception
{
    protected $lineno;
    // to be renamed to name in 2.0
    protected $filename;
    protected $rawMessage;

    private $sourcePath;
    private $sourceCode;

    /**
     * Constructor.
     *
     * Set the line number to -1 to enable its automatic guessing.
     * Set the name to null to enable its automatic guessing.
     *
     * @param string             $message  The error message
     * @param int                $lineno   The template line where the error occurred
     * @param Source|string|null $source   The source context where the error occurred
     * @param \Exception         $previous The previous exception
     */
    public function __construct($message, $lineno = -1, $source = null, \Exception $previous = null)
    {
        if (null === $source) {
            $name = null;
        } elseif (!$source instanceof Source) {
            // for compat with the Twig C ext., passing the template name as string is accepted
            $name = $source;
        } else {
            $name = $source->getName();
            $this->sourceCode = $source->getCode();
            $this->sourcePath = $source->getPath();
        }
        parent::__construct('', 0, $previous);

        $this->lineno = $lineno;
        $this->filename = $name;
        $this->rawMessage = $message;
        $this->updateRepr();
    }

    /**
     * Gets the raw message.
     *
     * @return string The raw message
     */
    public function getRawMessage()
    {
        return $this->rawMessage;
    }

    /**
     * Gets the logical name where the error occurred.
     *
     * @return string The name
     *
     * @deprecated since 1.27 (to be removed in 2.0). Use getSourceContext() instead.
     */
    public function getTemplateFile()
    {
        @trigger_error(sprintf('The "%s" method is deprecated since version 1.27 and will be removed in 2.0. Use getSourceContext() instead.', __METHOD__), E_USER_DEPRECATED);

        return $this->filename;
    }

    /**
     * Sets the logical name where the error occurred.
     *
     * @param string $name The name
     *
     * @deprecated since 1.27 (to be removed in 2.0). Use setSourceContext() instead.
     */
    public function setTemplateFile($name)
    {
        @trigger_error(sprintf('The "%s" method is deprecated since version 1.27 and will be removed in 2.0. Use setSourceContext() instead.', __METHOD__), E_USER_DEPRECATED);

        $this->filename = $name;

        $this->updateRepr();
    }

    /**
     * Gets the logical name where the error occurred.
     *
     * @return string The name
     *
     * @deprecated since 1.29 (to be removed in 2.0). Use getSourceContext() instead.
     */
    public function getTemplateName()
    {
        @trigger_error(sprintf('The "%s" method is deprecated since version 1.29 and will be removed in 2.0. Use getSourceContext() instead.', __METHOD__), E_USER_DEPRECATED);

        return $this->filename;
    }

    /**
     * Sets the logical name where the error occurred.
     *
     * @param string $name The name
     *
     * @deprecated since 1.29 (to be removed in 2.0). Use setSourceContext() instead.
     */
    public function setTemplateName($name)
    {
        @trigger_error(sprintf('The "%s" method is deprecated since version 1.29 and will be removed in 2.0. Use setSourceContext() instead.', __METHOD__), E_USER_DEPRECATED);

        $this->filename = $name;
        $this->sourceCode = $this->sourcePath = null;

        $this->updateRepr();
    }

    /**
     * Gets the template line where the error occurred.
     *
     * @return int The template line
     */
    public function getTemplateLine()
    {
        return $this->lineno;
    }

    /**
     * Sets the template line where the error occurred.
     *
     * @param int $lineno The template line
     */
    public function setTemplateLine($lineno)
    {
        $this->lineno = $lineno;

        $this->updateRepr();
    }

    /**
     * Gets the source context of the Twig template where the error occurred.
     *
     * @return Source|null
     */
    public function getSourceContext()
    {
        return $this->filename ? new Source($this->sourceCode, $this->filename, $this->sourcePath) : null;
    }

    /**
     * Sets the source context of the Twig template where the error occurred.
     */
    public function setSourceContext(Source $source = null)
    {
        if (null === $source) {
            $this->sourceCode = $this->filename = $this->sourcePath = null;
        } else {
            $this->sourceCode = $source->getCode();
            $this->filename = $source->getName();
            $this->sourcePath = $source->getPath();
        }

        $this->updateRepr();
    }

    public function guess()
    {
        $this->guessTemplateInfo();
        $this->updateRepr();
    }

    public function appendMessage($rawMessage)
    {
        $this->rawMessage .= $rawMessage;
        $this->updateRepr();
    }

    /**
     * @internal
     */
    protected function updateRepr()
    {
        $this->message = $this->rawMessage;

        if ($this->sourcePath && $this->lineno > 0) {
            $this->file = $this->sourcePath;
            $this->line = $this->lineno;

            return;
        }

        $dot = false;
        if ('.' === substr($this->message, -1)) {
            $this->message = substr($this->message, 0, -1);
            $dot = true;
        }

        $questionMark = false;
        if ('?' === substr($this->message, -1)) {
            $this->message = substr($this->message, 0, -1);
            $questionMark = true;
        }

        if ($this->filename) {
            if (\is_string($this->filename) || (\is_object($this->filename) && method_exists($this->filename, '__toString'))) {
                $name = sprintf('"%s"', $this->filename);
            } else {
                $name = json_encode($this->filename);
            }
            $this->message .= sprintf(' in %s', $name);
        }

        if ($this->lineno && $this->lineno >= 0) {
            $this->message .= sprintf(' at line %d', $this->lineno);
        }

        if ($dot) {
            $this->message .= '.';
        }

        if ($questionMark) {
            $this->message .= '?';
        }
    }

    /**
     * @internal
     */
    protected function guessTemplateInfo()
    {
        $template = null;
        $templateClass = null;

        $backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS | DEBUG_BACKTRACE_PROVIDE_OBJECT);
        foreach ($backtrace as $trace) {
            if (isset($trace['object']) && $trace['object'] instanceof Template && 'Twig_Template' !== \get_class($trace['object'])) {
                $currentClass = \get_class($trace['object']);
                $isEmbedContainer = 0 === strpos($templateClass, $currentClass);
                if (null === $this->filename || ($this->filename == $trace['object']->getTemplateName() && !$isEmbedContainer)) {
                    $template = $trace['object'];
                    $templateClass = \get_class($trace['object']);
                }
            }
        }

        // update template name
        if (null !== $template && null === $this->filename) {
            $this->filename = $template->getTemplateName();
        }

        // update template path if any
        if (null !== $template && null === $this->sourcePath) {
            $src = $template->getSourceContext();
            $this->sourceCode = $src->getCode();
            $this->sourcePath = $src->getPath();
        }

        if (null === $template || $this->lineno > -1) {
            return;
        }

        $r = new \ReflectionObject($template);
        $file = $r->getFileName();

        $exceptions = [$e = $this];
        while ($e instanceof self && $e = $e->getPrevious()) {
            $exceptions[] = $e;
        }

        while ($e = array_pop($exceptions)) {
            $traces = $e->getTrace();
            array_unshift($traces, ['file' => $e->getFile(), 'line' => $e->getLine()]);

            while ($trace = array_shift($traces)) {
                if (!isset($trace['file']) || !isset($trace['line']) || $file != $trace['file']) {
                    continue;
                }

                foreach ($template->getDebugInfo() as $codeLine => $templateLine) {
                    if ($codeLine <= $trace['line']) {
                        // update template line
                        $this->lineno = $templateLine;

                        return;
                    }
                }
            }
        }
    }
}

class_alias('Twig\Error\Error', 'Twig_Error');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Error;

/**
 * \Exception thrown when a syntax error occurs during lexing or parsing of a template.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class SyntaxError extends Error
{
    /**
     * Tweaks the error message to include suggestions.
     *
     * @param string $name  The original name of the item that does not exist
     * @param array  $items An array of possible items
     */
    public function addSuggestions($name, array $items)
    {
        if (!$alternatives = self::computeAlternatives($name, $items)) {
            return;
        }

        $this->appendMessage(sprintf(' Did you mean "%s"?', implode('", "', $alternatives)));
    }

    /**
     * @internal
     *
     * To be merged with the addSuggestions() method in 2.0.
     */
    public static function computeAlternatives($name, $items)
    {
        $alternatives = [];
        foreach ($items as $item) {
            $lev = levenshtein($name, $item);
            if ($lev <= \strlen($name) / 3 || false !== strpos($item, $name)) {
                $alternatives[$item] = $lev;
            }
        }
        asort($alternatives);

        return array_keys($alternatives);
    }
}

class_alias('Twig\Error\SyntaxError', 'Twig_Error_Syntax');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig;

use Twig\Node\ModuleNode;

/**
 * Compiles a node to PHP code.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class Compiler implements \Twig_CompilerInterface
{
    protected $lastLine;
    protected $source;
    protected $indentation;
    protected $env;
    protected $debugInfo = [];
    protected $sourceOffset;
    protected $sourceLine;
    protected $filename;
    private $varNameSalt = 0;

    public function __construct(Environment $env)
    {
        $this->env = $env;
    }

    /**
     * @deprecated since 1.25 (to be removed in 2.0)
     */
    public function getFilename()
    {
        @trigger_error(sprintf('The %s() method is deprecated since version 1.25 and will be removed in 2.0.', __FUNCTION__), E_USER_DEPRECATED);

        return $this->filename;
    }

    /**
     * Returns the environment instance related to this compiler.
     *
     * @return Environment
     */
    public function getEnvironment()
    {
        return $this->env;
    }

    /**
     * Gets the current PHP code after compilation.
     *
     * @return string The PHP code
     */
    public function getSource()
    {
        return $this->source;
    }

    /**
     * Compiles a node.
     *
     * @param int $indentation The current indentation
     *
     * @return $this
     */
    public function compile(\Twig_NodeInterface $node, $indentation = 0)
    {
        $this->lastLine = null;
        $this->source = '';
        $this->debugInfo = [];
        $this->sourceOffset = 0;
        // source code starts at 1 (as we then increment it when we encounter new lines)
        $this->sourceLine = 1;
        $this->indentation = $indentation;
        $this->varNameSalt = 0;

        if ($node instanceof ModuleNode) {
            // to be removed in 2.0
            $this->filename = $node->getTemplateName();
        }

        $node->compile($this);

        return $this;
    }

    public function subcompile(\Twig_NodeInterface $node, $raw = true)
    {
        if (false === $raw) {
            $this->source .= str_repeat(' ', $this->indentation * 4);
        }

        $node->compile($this);

        return $this;
    }

    /**
     * Adds a raw string to the compiled code.
     *
     * @param string $string The string
     *
     * @return $this
     */
    public function raw($string)
    {
        $this->source .= $string;

        return $this;
    }

    /**
     * Writes a string to the compiled code by adding indentation.
     *
     * @return $this
     */
    public function write()
    {
        $strings = \func_get_args();
        foreach ($strings as $string) {
            $this->source .= str_repeat(' ', $this->indentation * 4).$string;
        }

        return $this;
    }

    /**
     * Appends an indentation to the current PHP code after compilation.
     *
     * @return $this
     *
     * @deprecated since 1.27 (to be removed in 2.0).
     */
    public function addIndentation()
    {
        @trigger_error('The '.__METHOD__.' method is deprecated since version 1.27 and will be removed in 2.0. Use write(\'\') instead.', E_USER_DEPRECATED);

        $this->source .= str_repeat(' ', $this->indentation * 4);

        return $this;
    }

    /**
     * Adds a quoted string to the compiled code.
     *
     * @param string $value The string
     *
     * @return $this
     */
    public function string($value)
    {
        $this->source .= sprintf('"%s"', addcslashes($value, "\0\t\"\$\\"));

        return $this;
    }

    /**
     * Returns a PHP representation of a given value.
     *
     * @param mixed $value The value to convert
     *
     * @return $this
     */
    public function repr($value)
    {
        if (\is_int($value) || \is_float($value)) {
            if (false !== $locale = setlocale(LC_NUMERIC, '0')) {
                setlocale(LC_NUMERIC, 'C');
            }

            $this->raw(var_export($value, true));

            if (false !== $locale) {
                setlocale(LC_NUMERIC, $locale);
            }
        } elseif (null === $value) {
            $this->raw('null');
        } elseif (\is_bool($value)) {
            $this->raw($value ? 'true' : 'false');
        } elseif (\is_array($value)) {
            $this->raw('[');
            $first = true;
            foreach ($value as $key => $v) {
                if (!$first) {
                    $this->raw(', ');
                }
                $first = false;
                $this->repr($key);
                $this->raw(' => ');
                $this->repr($v);
            }
            $this->raw(']');
        } else {
            $this->string($value);
        }

        return $this;
    }

    /**
     * Adds debugging information.
     *
     * @return $this
     */
    public function addDebugInfo(\Twig_NodeInterface $node)
    {
        if ($node->getTemplateLine() != $this->lastLine) {
            $this->write(sprintf("// line %d\n", $node->getTemplateLine()));

            // when mbstring.func_overload is set to 2
            // mb_substr_count() replaces substr_count()
            // but they have different signatures!
            if (((int) ini_get('mbstring.func_overload')) & 2) {
                @trigger_error('Support for having "mbstring.func_overload" different from 0 is deprecated version 1.29 and will be removed in 2.0.', E_USER_DEPRECATED);

                // this is much slower than the "right" version
                $this->sourceLine += mb_substr_count(mb_substr($this->source, $this->sourceOffset), "\n");
            } else {
                $this->sourceLine += substr_count($this->source, "\n", $this->sourceOffset);
            }
            $this->sourceOffset = \strlen($this->source);
            $this->debugInfo[$this->sourceLine] = $node->getTemplateLine();

            $this->lastLine = $node->getTemplateLine();
        }

        return $this;
    }

    public function getDebugInfo()
    {
        ksort($this->debugInfo);

        return $this->debugInfo;
    }

    /**
     * Indents the generated code.
     *
     * @param int $step The number of indentation to add
     *
     * @return $this
     */
    public function indent($step = 1)
    {
        $this->indentation += $step;

        return $this;
    }

    /**
     * Outdents the generated code.
     *
     * @param int $step The number of indentation to remove
     *
     * @return $this
     *
     * @throws \LogicException When trying to outdent too much so the indentation would become negative
     */
    public function outdent($step = 1)
    {
        // can't outdent by more steps than the current indentation level
        if ($this->indentation < $step) {
            throw new \LogicException('Unable to call outdent() as the indentation would become negative.');
        }

        $this->indentation -= $step;

        return $this;
    }

    public function getVarName()
    {
        return sprintf('__internal_%s', hash('sha256', __METHOD__.$this->varNameSalt++));
    }
}

class_alias('Twig\Compiler', 'Twig_Compiler');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig;

use Twig\Cache\CacheInterface;
use Twig\Cache\FilesystemCache;
use Twig\Cache\NullCache;
use Twig\Error\Error;
use Twig\Error\LoaderError;
use Twig\Error\RuntimeError;
use Twig\Error\SyntaxError;
use Twig\Extension\CoreExtension;
use Twig\Extension\EscaperExtension;
use Twig\Extension\ExtensionInterface;
use Twig\Extension\GlobalsInterface;
use Twig\Extension\InitRuntimeInterface;
use Twig\Extension\OptimizerExtension;
use Twig\Extension\StagingExtension;
use Twig\Loader\ArrayLoader;
use Twig\Loader\ChainLoader;
use Twig\Loader\LoaderInterface;
use Twig\Loader\SourceContextLoaderInterface;
use Twig\Node\ModuleNode;
use Twig\NodeVisitor\NodeVisitorInterface;
use Twig\RuntimeLoader\RuntimeLoaderInterface;
use Twig\TokenParser\TokenParserInterface;

/**
 * Stores the Twig configuration.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class Environment
{
    const VERSION = '1.42.3';
    const VERSION_ID = 14203;
    const MAJOR_VERSION = 1;
    const MINOR_VERSION = 42;
    const RELEASE_VERSION = 3;
    const EXTRA_VERSION = '';

    protected $charset;
    protected $loader;
    protected $debug;
    protected $autoReload;
    protected $cache;
    protected $lexer;
    protected $parser;
    protected $compiler;
    protected $baseTemplateClass;
    protected $extensions;
    protected $parsers;
    protected $visitors;
    protected $filters;
    protected $tests;
    protected $functions;
    protected $globals;
    protected $runtimeInitialized = false;
    protected $extensionInitialized = false;
    protected $loadedTemplates;
    protected $strictVariables;
    protected $unaryOperators;
    protected $binaryOperators;
    protected $templateClassPrefix = '__TwigTemplate_';
    protected $functionCallbacks = [];
    protected $filterCallbacks = [];
    protected $staging;

    private $originalCache;
    private $bcWriteCacheFile = false;
    private $bcGetCacheFilename = false;
    private $lastModifiedExtension = 0;
    private $extensionsByClass = [];
    private $runtimeLoaders = [];
    private $runtimes = [];
    private $optionsHash;

    /**
     * Constructor.
     *
     * Available options:
     *
     *  * debug: When set to true, it automatically set "auto_reload" to true as
     *           well (default to false).
     *
     *  * charset: The charset used by the templates (default to UTF-8).
     *
     *  * base_template_class: The base template class to use for generated
     *                         templates (default to \Twig\Template).
     *
     *  * cache: An absolute path where to store the compiled templates,
     *           a \Twig\Cache\CacheInterface implementation,
     *           or false to disable compilation cache (default).
     *
     *  * auto_reload: Whether to reload the template if the original source changed.
     *                 If you don't provide the auto_reload option, it will be
     *                 determined automatically based on the debug value.
     *
     *  * strict_variables: Whether to ignore invalid variables in templates
     *                      (default to false).
     *
     *  * autoescape: Whether to enable auto-escaping (default to html):
     *                  * false: disable auto-escaping
     *                  * true: equivalent to html
     *                  * html, js: set the autoescaping to one of the supported strategies
     *                  * name: set the autoescaping strategy based on the template name extension
     *                  * PHP callback: a PHP callback that returns an escaping strategy based on the template "name"
     *
     *  * optimizations: A flag that indicates which optimizations to apply
     *                   (default to -1 which means that all optimizations are enabled;
     *                   set it to 0 to disable).
     */
    public function __construct(LoaderInterface $loader = null, $options = [])
    {
        if (null !== $loader) {
            $this->setLoader($loader);
        } else {
            @trigger_error('Not passing a "Twig\Lodaer\LoaderInterface" as the first constructor argument of "Twig\Environment" is deprecated since version 1.21.', E_USER_DEPRECATED);
        }

        $options = array_merge([
            'debug' => false,
            'charset' => 'UTF-8',
            'base_template_class' => '\Twig\Template',
            'strict_variables' => false,
            'autoescape' => 'html',
            'cache' => false,
            'auto_reload' => null,
            'optimizations' => -1,
        ], $options);

        $this->debug = (bool) $options['debug'];
        $this->charset = strtoupper($options['charset']);
        $this->baseTemplateClass = $options['base_template_class'];
        $this->autoReload = null === $options['auto_reload'] ? $this->debug : (bool) $options['auto_reload'];
        $this->strictVariables = (bool) $options['strict_variables'];
        $this->setCache($options['cache']);

        $this->addExtension(new CoreExtension());
        $this->addExtension(new EscaperExtension($options['autoescape']));
        $this->addExtension(new OptimizerExtension($options['optimizations']));
        $this->staging = new StagingExtension();

        // For BC
        if (\is_string($this->originalCache)) {
            $r = new \ReflectionMethod($this, 'writeCacheFile');
            if (__CLASS__ !== $r->getDeclaringClass()->getName()) {
                @trigger_error('The Twig\Environment::writeCacheFile method is deprecated since version 1.22 and will be removed in Twig 2.0.', E_USER_DEPRECATED);

                $this->bcWriteCacheFile = true;
            }

            $r = new \ReflectionMethod($this, 'getCacheFilename');
            if (__CLASS__ !== $r->getDeclaringClass()->getName()) {
                @trigger_error('The Twig\Environment::getCacheFilename method is deprecated since version 1.22 and will be removed in Twig 2.0.', E_USER_DEPRECATED);

                $this->bcGetCacheFilename = true;
            }
        }
    }

    /**
     * Gets the base template class for compiled templates.
     *
     * @return string The base template class name
     */
    public function getBaseTemplateClass()
    {
        return $this->baseTemplateClass;
    }

    /**
     * Sets the base template class for compiled templates.
     *
     * @param string $class The base template class name
     */
    public function setBaseTemplateClass($class)
    {
        $this->baseTemplateClass = $class;
        $this->updateOptionsHash();
    }

    /**
     * Enables debugging mode.
     */
    public function enableDebug()
    {
        $this->debug = true;
        $this->updateOptionsHash();
    }

    /**
     * Disables debugging mode.
     */
    public function disableDebug()
    {
        $this->debug = false;
        $this->updateOptionsHash();
    }

    /**
     * Checks if debug mode is enabled.
     *
     * @return bool true if debug mode is enabled, false otherwise
     */
    public function isDebug()
    {
        return $this->debug;
    }

    /**
     * Enables the auto_reload option.
     */
    public function enableAutoReload()
    {
        $this->autoReload = true;
    }

    /**
     * Disables the auto_reload option.
     */
    public function disableAutoReload()
    {
        $this->autoReload = false;
    }

    /**
     * Checks if the auto_reload option is enabled.
     *
     * @return bool true if auto_reload is enabled, false otherwise
     */
    public function isAutoReload()
    {
        return $this->autoReload;
    }

    /**
     * Enables the strict_variables option.
     */
    public function enableStrictVariables()
    {
        $this->strictVariables = true;
        $this->updateOptionsHash();
    }

    /**
     * Disables the strict_variables option.
     */
    public function disableStrictVariables()
    {
        $this->strictVariables = false;
        $this->updateOptionsHash();
    }

    /**
     * Checks if the strict_variables option is enabled.
     *
     * @return bool true if strict_variables is enabled, false otherwise
     */
    public function isStrictVariables()
    {
        return $this->strictVariables;
    }

    /**
     * Gets the current cache implementation.
     *
     * @param bool $original Whether to return the original cache option or the real cache instance
     *
     * @return CacheInterface|string|false A Twig\Cache\CacheInterface implementation,
     *                                     an absolute path to the compiled templates,
     *                                     or false to disable cache
     */
    public function getCache($original = true)
    {
        return $original ? $this->originalCache : $this->cache;
    }

    /**
     * Sets the current cache implementation.
     *
     * @param CacheInterface|string|false $cache A Twig\Cache\CacheInterface implementation,
     *                                           an absolute path to the compiled templates,
     *                                           or false to disable cache
     */
    public function setCache($cache)
    {
        if (\is_string($cache)) {
            $this->originalCache = $cache;
            $this->cache = new FilesystemCache($cache);
        } elseif (false === $cache) {
            $this->originalCache = $cache;
            $this->cache = new NullCache();
        } elseif (null === $cache) {
            @trigger_error('Using "null" as the cache strategy is deprecated since version 1.23 and will be removed in Twig 2.0.', E_USER_DEPRECATED);
            $this->originalCache = false;
            $this->cache = new NullCache();
        } elseif ($cache instanceof CacheInterface) {
            $this->originalCache = $this->cache = $cache;
        } else {
            throw new \LogicException(sprintf('Cache can only be a string, false, or a \Twig\Cache\CacheInterface implementation.'));
        }
    }

    /**
     * Gets the cache filename for a given template.
     *
     * @param string $name The template name
     *
     * @return string|false The cache file name or false when caching is disabled
     *
     * @deprecated since 1.22 (to be removed in 2.0)
     */
    public function getCacheFilename($name)
    {
        @trigger_error(sprintf('The %s method is deprecated since version 1.22 and will be removed in Twig 2.0.', __METHOD__), E_USER_DEPRECATED);

        $key = $this->cache->generateKey($name, $this->getTemplateClass($name));

        return !$key ? false : $key;
    }

    /**
     * Gets the template class associated with the given string.
     *
     * The generated template class is based on the following parameters:
     *
     *  * The cache key for the given template;
     *  * The currently enabled extensions;
     *  * Whether the Twig C extension is available or not;
     *  * PHP version;
     *  * Twig version;
     *  * Options with what environment was created.
     *
     * @param string   $name  The name for which to calculate the template class name
     * @param int|null $index The index if it is an embedded template
     *
     * @return string The template class name
     */
    public function getTemplateClass($name, $index = null)
    {
        $key = $this->getLoader()->getCacheKey($name).$this->optionsHash;

        return $this->templateClassPrefix.hash('sha256', $key).(null === $index ? '' : '___'.$index);
    }

    /**
     * Gets the template class prefix.
     *
     * @return string The template class prefix
     *
     * @deprecated since 1.22 (to be removed in 2.0)
     */
    public function getTemplateClassPrefix()
    {
        @trigger_error(sprintf('The %s method is deprecated since version 1.22 and will be removed in Twig 2.0.', __METHOD__), E_USER_DEPRECATED);

        return $this->templateClassPrefix;
    }

    /**
     * Renders a template.
     *
     * @param string|TemplateWrapper $name    The template name
     * @param array                  $context An array of parameters to pass to the template
     *
     * @return string The rendered template
     *
     * @throws LoaderError  When the template cannot be found
     * @throws SyntaxError  When an error occurred during compilation
     * @throws RuntimeError When an error occurred during rendering
     */
    public function render($name, array $context = [])
    {
        return $this->load($name)->render($context);
    }

    /**
     * Displays a template.
     *
     * @param string|TemplateWrapper $name    The template name
     * @param array                  $context An array of parameters to pass to the template
     *
     * @throws LoaderError  When the template cannot be found
     * @throws SyntaxError  When an error occurred during compilation
     * @throws RuntimeError When an error occurred during rendering
     */
    public function display($name, array $context = [])
    {
        $this->load($name)->display($context);
    }

    /**
     * Loads a template.
     *
     * @param string|TemplateWrapper|\Twig\Template $name The template name
     *
     * @throws LoaderError  When the template cannot be found
     * @throws RuntimeError When a previously generated cache is corrupted
     * @throws SyntaxError  When an error occurred during compilation
     *
     * @return TemplateWrapper
     */
    public function load($name)
    {
        if ($name instanceof TemplateWrapper) {
            return $name;
        }

        if ($name instanceof Template) {
            return new TemplateWrapper($this, $name);
        }

        return new TemplateWrapper($this, $this->loadTemplate($name));
    }

    /**
     * Loads a template internal representation.
     *
     * This method is for internal use only and should never be called
     * directly.
     *
     * @param string $name  The template name
     * @param int    $index The index if it is an embedded template
     *
     * @return \Twig_TemplateInterface A template instance representing the given template name
     *
     * @throws LoaderError  When the template cannot be found
     * @throws RuntimeError When a previously generated cache is corrupted
     * @throws SyntaxError  When an error occurred during compilation
     *
     * @internal
     */
    public function loadTemplate($name, $index = null)
    {
        return $this->loadClass($this->getTemplateClass($name), $name, $index);
    }

    /**
     * @internal
     */
    public function loadClass($cls, $name, $index = null)
    {
        $mainCls = $cls;
        if (null !== $index) {
            $cls .= '___'.$index;
        }

        if (isset($this->loadedTemplates[$cls])) {
            return $this->loadedTemplates[$cls];
        }

        if (!class_exists($cls, false)) {
            if ($this->bcGetCacheFilename) {
                $key = $this->getCacheFilename($name);
            } else {
                $key = $this->cache->generateKey($name, $mainCls);
            }

            if (!$this->isAutoReload() || $this->isTemplateFresh($name, $this->cache->getTimestamp($key))) {
                $this->cache->load($key);
            }

            $source = null;
            if (!class_exists($cls, false)) {
                $loader = $this->getLoader();
                if (!$loader instanceof SourceContextLoaderInterface) {
                    $source = new Source($loader->getSource($name), $name);
                } else {
                    $source = $loader->getSourceContext($name);
                }

                $content = $this->compileSource($source);

                if ($this->bcWriteCacheFile) {
                    $this->writeCacheFile($key, $content);
                } else {
                    $this->cache->write($key, $content);
                    $this->cache->load($key);
                }

                if (!class_exists($mainCls, false)) {
                    /* Last line of defense if either $this->bcWriteCacheFile was used,
                     * $this->cache is implemented as a no-op or we have a race condition
                     * where the cache was cleared between the above calls to write to and load from
                     * the cache.
                     */
                    eval('?>'.$content);
                }
            }

            if (!class_exists($cls, false)) {
                throw new RuntimeError(sprintf('Failed to load Twig template "%s", index "%s": cache might be corrupted.', $name, $index), -1, $source);
            }
        }

        if (!$this->runtimeInitialized) {
            $this->initRuntime();
        }

        return $this->loadedTemplates[$cls] = new $cls($this);
    }

    /**
     * Creates a template from source.
     *
     * This method should not be used as a generic way to load templates.
     *
     * @param string $template The template name
     * @param string $name     An optional name of the template to be used in error messages
     *
     * @return TemplateWrapper A template instance representing the given template name
     *
     * @throws LoaderError When the template cannot be found
     * @throws SyntaxError When an error occurred during compilation
     */
    public function createTemplate($template, $name = null)
    {
        $hash = hash('sha256', $template, false);
        if (null !== $name) {
            $name = sprintf('%s (string template %s)', $name, $hash);
        } else {
            $name = sprintf('__string_template__%s', $hash);
        }

        $loader = new ChainLoader([
            new ArrayLoader([$name => $template]),
            $current = $this->getLoader(),
        ]);

        $this->setLoader($loader);
        try {
            $template = new TemplateWrapper($this, $this->loadTemplate($name));
        } catch (\Exception $e) {
            $this->setLoader($current);

            throw $e;
        } catch (\Throwable $e) {
            $this->setLoader($current);

            throw $e;
        }
        $this->setLoader($current);

        return $template;
    }

    /**
     * Returns true if the template is still fresh.
     *
     * Besides checking the loader for freshness information,
     * this method also checks if the enabled extensions have
     * not changed.
     *
     * @param string $name The template name
     * @param int    $time The last modification time of the cached template
     *
     * @return bool true if the template is fresh, false otherwise
     */
    public function isTemplateFresh($name, $time)
    {
        if (0 === $this->lastModifiedExtension) {
            foreach ($this->extensions as $extension) {
                $r = new \ReflectionObject($extension);
                if (file_exists($r->getFileName()) && ($extensionTime = filemtime($r->getFileName())) > $this->lastModifiedExtension) {
                    $this->lastModifiedExtension = $extensionTime;
                }
            }
        }

        return $this->lastModifiedExtension <= $time && $this->getLoader()->isFresh($name, $time);
    }

    /**
     * Tries to load a template consecutively from an array.
     *
     * Similar to load() but it also accepts instances of \Twig\Template and
     * \Twig\TemplateWrapper, and an array of templates where each is tried to be loaded.
     *
     * @param string|Template|\Twig\TemplateWrapper|array $names A template or an array of templates to try consecutively
     *
     * @return TemplateWrapper|Template
     *
     * @throws LoaderError When none of the templates can be found
     * @throws SyntaxError When an error occurred during compilation
     */
    public function resolveTemplate($names)
    {
        if (!\is_array($names)) {
            $names = [$names];
        }

        foreach ($names as $name) {
            if ($name instanceof Template) {
                return $name;
            }
            if ($name instanceof TemplateWrapper) {
                return $name;
            }

            try {
                return $this->loadTemplate($name);
            } catch (LoaderError $e) {
                if (1 === \count($names)) {
                    throw $e;
                }
            }
        }

        throw new LoaderError(sprintf('Unable to find one of the following templates: "%s".', implode('", "', $names)));
    }

    /**
     * Clears the internal template cache.
     *
     * @deprecated since 1.18.3 (to be removed in 2.0)
     */
    public function clearTemplateCache()
    {
        @trigger_error(sprintf('The %s method is deprecated since version 1.18.3 and will be removed in Twig 2.0.', __METHOD__), E_USER_DEPRECATED);

        $this->loadedTemplates = [];
    }

    /**
     * Clears the template cache files on the filesystem.
     *
     * @deprecated since 1.22 (to be removed in 2.0)
     */
    public function clearCacheFiles()
    {
        @trigger_error(sprintf('The %s method is deprecated since version 1.22 and will be removed in Twig 2.0.', __METHOD__), E_USER_DEPRECATED);

        if (\is_string($this->originalCache)) {
            foreach (new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($this->originalCache), \RecursiveIteratorIterator::LEAVES_ONLY) as $file) {
                if ($file->isFile()) {
                    @unlink($file->getPathname());
                }
            }
        }
    }

    /**
     * Gets the Lexer instance.
     *
     * @return \Twig_LexerInterface
     *
     * @deprecated since 1.25 (to be removed in 2.0)
     */
    public function getLexer()
    {
        @trigger_error(sprintf('The %s() method is deprecated since version 1.25 and will be removed in 2.0.', __FUNCTION__), E_USER_DEPRECATED);

        if (null === $this->lexer) {
            $this->lexer = new Lexer($this);
        }

        return $this->lexer;
    }

    public function setLexer(\Twig_LexerInterface $lexer)
    {
        $this->lexer = $lexer;
    }

    /**
     * Tokenizes a source code.
     *
     * @param string|Source $source The template source code
     * @param string        $name   The template name (deprecated)
     *
     * @return TokenStream
     *
     * @throws SyntaxError When the code is syntactically wrong
     */
    public function tokenize($source, $name = null)
    {
        if (!$source instanceof Source) {
            @trigger_error(sprintf('Passing a string as the $source argument of %s() is deprecated since version 1.27. Pass a Twig\Source instance instead.', __METHOD__), E_USER_DEPRECATED);
            $source = new Source($source, $name);
        }

        if (null === $this->lexer) {
            $this->lexer = new Lexer($this);
        }

        return $this->lexer->tokenize($source);
    }

    /**
     * Gets the Parser instance.
     *
     * @return \Twig_ParserInterface
     *
     * @deprecated since 1.25 (to be removed in 2.0)
     */
    public function getParser()
    {
        @trigger_error(sprintf('The %s() method is deprecated since version 1.25 and will be removed in 2.0.', __FUNCTION__), E_USER_DEPRECATED);

        if (null === $this->parser) {
            $this->parser = new Parser($this);
        }

        return $this->parser;
    }

    public function setParser(\Twig_ParserInterface $parser)
    {
        $this->parser = $parser;
    }

    /**
     * Converts a token stream to a node tree.
     *
     * @return ModuleNode
     *
     * @throws SyntaxError When the token stream is syntactically or semantically wrong
     */
    public function parse(TokenStream $stream)
    {
        if (null === $this->parser) {
            $this->parser = new Parser($this);
        }

        return $this->parser->parse($stream);
    }

    /**
     * Gets the Compiler instance.
     *
     * @return \Twig_CompilerInterface
     *
     * @deprecated since 1.25 (to be removed in 2.0)
     */
    public function getCompiler()
    {
        @trigger_error(sprintf('The %s() method is deprecated since version 1.25 and will be removed in 2.0.', __FUNCTION__), E_USER_DEPRECATED);

        if (null === $this->compiler) {
            $this->compiler = new Compiler($this);
        }

        return $this->compiler;
    }

    public function setCompiler(\Twig_CompilerInterface $compiler)
    {
        $this->compiler = $compiler;
    }

    /**
     * Compiles a node and returns the PHP code.
     *
     * @return string The compiled PHP source code
     */
    public function compile(\Twig_NodeInterface $node)
    {
        if (null === $this->compiler) {
            $this->compiler = new Compiler($this);
        }

        return $this->compiler->compile($node)->getSource();
    }

    /**
     * Compiles a template source code.
     *
     * @param string|Source $source The template source code
     * @param string        $name   The template name (deprecated)
     *
     * @return string The compiled PHP source code
     *
     * @throws SyntaxError When there was an error during tokenizing, parsing or compiling
     */
    public function compileSource($source, $name = null)
    {
        if (!$source instanceof Source) {
            @trigger_error(sprintf('Passing a string as the $source argument of %s() is deprecated since version 1.27. Pass a Twig\Source instance instead.', __METHOD__), E_USER_DEPRECATED);
            $source = new Source($source, $name);
        }

        try {
            return $this->compile($this->parse($this->tokenize($source)));
        } catch (Error $e) {
            $e->setSourceContext($source);
            throw $e;
        } catch (\Exception $e) {
            throw new SyntaxError(sprintf('An exception has been thrown during the compilation of a template ("%s").', $e->getMessage()), -1, $source, $e);
        }
    }

    public function setLoader(LoaderInterface $loader)
    {
        if (!$loader instanceof SourceContextLoaderInterface && 0 !== strpos(\get_class($loader), 'Mock_')) {
            @trigger_error(sprintf('Twig loader "%s" should implement Twig\Loader\SourceContextLoaderInterface since version 1.27.', \get_class($loader)), E_USER_DEPRECATED);
        }

        $this->loader = $loader;
    }

    /**
     * Gets the Loader instance.
     *
     * @return LoaderInterface
     */
    public function getLoader()
    {
        if (null === $this->loader) {
            throw new \LogicException('You must set a loader first.');
        }

        return $this->loader;
    }

    /**
     * Sets the default template charset.
     *
     * @param string $charset The default charset
     */
    public function setCharset($charset)
    {
        $this->charset = strtoupper($charset);
    }

    /**
     * Gets the default template charset.
     *
     * @return string The default charset
     */
    public function getCharset()
    {
        return $this->charset;
    }

    /**
     * Initializes the runtime environment.
     *
     * @deprecated since 1.23 (to be removed in 2.0)
     */
    public function initRuntime()
    {
        $this->runtimeInitialized = true;

        foreach ($this->getExtensions() as $name => $extension) {
            if (!$extension instanceof InitRuntimeInterface) {
                $m = new \ReflectionMethod($extension, 'initRuntime');

                $parentClass = $m->getDeclaringClass()->getName();
                if ('Twig_Extension' !== $parentClass && 'Twig\Extension\AbstractExtension' !== $parentClass) {
                    @trigger_error(sprintf('Defining the initRuntime() method in the "%s" extension is deprecated since version 1.23. Use the `needs_environment` option to get the \Twig_Environment instance in filters, functions, or tests; or explicitly implement Twig\Extension\InitRuntimeInterface if needed (not recommended).', $name), E_USER_DEPRECATED);
                }
            }

            $extension->initRuntime($this);
        }
    }

    /**
     * Returns true if the given extension is registered.
     *
     * @param string $class The extension class name
     *
     * @return bool Whether the extension is registered or not
     */
    public function hasExtension($class)
    {
        $class = ltrim($class, '\\');
        if (!isset($this->extensionsByClass[$class]) && class_exists($class, false)) {
            // For BC/FC with namespaced aliases
            $class = new \ReflectionClass($class);
            $class = $class->name;
        }

        if (isset($this->extensions[$class])) {
            if ($class !== \get_class($this->extensions[$class])) {
                @trigger_error(sprintf('Referencing the "%s" extension by its name (defined by getName()) is deprecated since 1.26 and will be removed in Twig 2.0. Use the Fully Qualified Extension Class Name instead.', $class), E_USER_DEPRECATED);
            }

            return true;
        }

        return isset($this->extensionsByClass[$class]);
    }

    /**
     * Adds a runtime loader.
     */
    public function addRuntimeLoader(RuntimeLoaderInterface $loader)
    {
        $this->runtimeLoaders[] = $loader;
    }

    /**
     * Gets an extension by class name.
     *
     * @param string $class The extension class name
     *
     * @return ExtensionInterface
     */
    public function getExtension($class)
    {
        $class = ltrim($class, '\\');
        if (!isset($this->extensionsByClass[$class]) && class_exists($class, false)) {
            // For BC/FC with namespaced aliases
            $class = new \ReflectionClass($class);
            $class = $class->name;
        }

        if (isset($this->extensions[$class])) {
            if ($class !== \get_class($this->extensions[$class])) {
                @trigger_error(sprintf('Referencing the "%s" extension by its name (defined by getName()) is deprecated since 1.26 and will be removed in Twig 2.0. Use the Fully Qualified Extension Class Name instead.', $class), E_USER_DEPRECATED);
            }

            return $this->extensions[$class];
        }

        if (!isset($this->extensionsByClass[$class])) {
            throw new RuntimeError(sprintf('The "%s" extension is not enabled.', $class));
        }

        return $this->extensionsByClass[$class];
    }

    /**
     * Returns the runtime implementation of a Twig element (filter/function/test).
     *
     * @param string $class A runtime class name
     *
     * @return object The runtime implementation
     *
     * @throws RuntimeError When the template cannot be found
     */
    public function getRuntime($class)
    {
        if (isset($this->runtimes[$class])) {
            return $this->runtimes[$class];
        }

        foreach ($this->runtimeLoaders as $loader) {
            if (null !== $runtime = $loader->load($class)) {
                return $this->runtimes[$class] = $runtime;
            }
        }

        throw new RuntimeError(sprintf('Unable to load the "%s" runtime.', $class));
    }

    public function addExtension(ExtensionInterface $extension)
    {
        if ($this->extensionInitialized) {
            throw new \LogicException(sprintf('Unable to register extension "%s" as extensions have already been initialized.', $extension->getName()));
        }

        $class = \get_class($extension);
        if ($class !== $extension->getName()) {
            if (isset($this->extensions[$extension->getName()])) {
                unset($this->extensions[$extension->getName()], $this->extensionsByClass[$class]);
                @trigger_error(sprintf('The possibility to register the same extension twice ("%s") is deprecated since version 1.23 and will be removed in Twig 2.0. Use proper PHP inheritance instead.', $extension->getName()), E_USER_DEPRECATED);
            }
        }

        $this->lastModifiedExtension = 0;
        $this->extensionsByClass[$class] = $extension;
        $this->extensions[$extension->getName()] = $extension;
        $this->updateOptionsHash();
    }

    /**
     * Removes an extension by name.
     *
     * This method is deprecated and you should not use it.
     *
     * @param string $name The extension name
     *
     * @deprecated since 1.12 (to be removed in 2.0)
     */
    public function removeExtension($name)
    {
        @trigger_error(sprintf('The %s method is deprecated since version 1.12 and will be removed in Twig 2.0.', __METHOD__), E_USER_DEPRECATED);

        if ($this->extensionInitialized) {
            throw new \LogicException(sprintf('Unable to remove extension "%s" as extensions have already been initialized.', $name));
        }

        $class = ltrim($name, '\\');
        if (!isset($this->extensionsByClass[$class]) && class_exists($class, false)) {
            // For BC/FC with namespaced aliases
            $class = new \ReflectionClass($class);
            $class = $class->name;
        }

        if (isset($this->extensions[$class])) {
            if ($class !== \get_class($this->extensions[$class])) {
                @trigger_error(sprintf('Referencing the "%s" extension by its name (defined by getName()) is deprecated since 1.26 and will be removed in Twig 2.0. Use the Fully Qualified Extension Class Name instead.', $class), E_USER_DEPRECATED);
            }

            unset($this->extensions[$class]);
        }

        unset($this->extensions[$class]);
        $this->updateOptionsHash();
    }

    /**
     * Registers an array of extensions.
     *
     * @param array $extensions An array of extensions
     */
    public function setExtensions(array $extensions)
    {
        foreach ($extensions as $extension) {
            $this->addExtension($extension);
        }
    }

    /**
     * Returns all registered extensions.
     *
     * @return ExtensionInterface[] An array of extensions (keys are for internal usage only and should not be relied on)
     */
    public function getExtensions()
    {
        return $this->extensions;
    }

    public function addTokenParser(TokenParserInterface $parser)
    {
        if ($this->extensionInitialized) {
            throw new \LogicException('Unable to add a token parser as extensions have already been initialized.');
        }

        $this->staging->addTokenParser($parser);
    }

    /**
     * Gets the registered Token Parsers.
     *
     * @return \Twig_TokenParserBrokerInterface
     *
     * @internal
     */
    public function getTokenParsers()
    {
        if (!$this->extensionInitialized) {
            $this->initExtensions();
        }

        return $this->parsers;
    }

    /**
     * Gets registered tags.
     *
     * Be warned that this method cannot return tags defined by \Twig_TokenParserBrokerInterface classes.
     *
     * @return TokenParserInterface[]
     *
     * @internal
     */
    public function getTags()
    {
        $tags = [];
        foreach ($this->getTokenParsers()->getParsers() as $parser) {
            if ($parser instanceof TokenParserInterface) {
                $tags[$parser->getTag()] = $parser;
            }
        }

        return $tags;
    }

    public function addNodeVisitor(NodeVisitorInterface $visitor)
    {
        if ($this->extensionInitialized) {
            throw new \LogicException('Unable to add a node visitor as extensions have already been initialized.');
        }

        $this->staging->addNodeVisitor($visitor);
    }

    /**
     * Gets the registered Node Visitors.
     *
     * @return NodeVisitorInterface[]
     *
     * @internal
     */
    public function getNodeVisitors()
    {
        if (!$this->extensionInitialized) {
            $this->initExtensions();
        }

        return $this->visitors;
    }

    /**
     * Registers a Filter.
     *
     * @param string|TwigFilter                $name   The filter name or a \Twig_SimpleFilter instance
     * @param \Twig_FilterInterface|TwigFilter $filter
     */
    public function addFilter($name, $filter = null)
    {
        if (!$name instanceof TwigFilter && !($filter instanceof TwigFilter || $filter instanceof \Twig_FilterInterface)) {
            throw new \LogicException('A filter must be an instance of \Twig_FilterInterface or \Twig_SimpleFilter.');
        }

        if ($name instanceof TwigFilter) {
            $filter = $name;
            $name = $filter->getName();
        } else {
            @trigger_error(sprintf('Passing a name as a first argument to the %s method is deprecated since version 1.21. Pass an instance of "Twig_SimpleFilter" instead when defining filter "%s".', __METHOD__, $name), E_USER_DEPRECATED);
        }

        if ($this->extensionInitialized) {
            throw new \LogicException(sprintf('Unable to add filter "%s" as extensions have already been initialized.', $name));
        }

        $this->staging->addFilter($name, $filter);
    }

    /**
     * Get a filter by name.
     *
     * Subclasses may override this method and load filters differently;
     * so no list of filters is available.
     *
     * @param string $name The filter name
     *
     * @return \Twig_Filter|false
     *
     * @internal
     */
    public function getFilter($name)
    {
        if (!$this->extensionInitialized) {
            $this->initExtensions();
        }

        if (isset($this->filters[$name])) {
            return $this->filters[$name];
        }

        foreach ($this->filters as $pattern => $filter) {
            $pattern = str_replace('\\*', '(.*?)', preg_quote($pattern, '#'), $count);

            if ($count) {
                if (preg_match('#^'.$pattern.'$#', $name, $matches)) {
                    array_shift($matches);
                    $filter->setArguments($matches);

                    return $filter;
                }
            }
        }

        foreach ($this->filterCallbacks as $callback) {
            if (false !== $filter = \call_user_func($callback, $name)) {
                return $filter;
            }
        }

        return false;
    }

    public function registerUndefinedFilterCallback($callable)
    {
        $this->filterCallbacks[] = $callable;
    }

    /**
     * Gets the registered Filters.
     *
     * Be warned that this method cannot return filters defined with registerUndefinedFilterCallback.
     *
     * @return \Twig_FilterInterface[]
     *
     * @see registerUndefinedFilterCallback
     *
     * @internal
     */
    public function getFilters()
    {
        if (!$this->extensionInitialized) {
            $this->initExtensions();
        }

        return $this->filters;
    }

    /**
     * Registers a Test.
     *
     * @param string|TwigTest              $name The test name or a \Twig_SimpleTest instance
     * @param \Twig_TestInterface|TwigTest $test A \Twig_TestInterface instance or a \Twig_SimpleTest instance
     */
    public function addTest($name, $test = null)
    {
        if (!$name instanceof TwigTest && !($test instanceof TwigTest || $test instanceof \Twig_TestInterface)) {
            throw new \LogicException('A test must be an instance of \Twig_TestInterface or \Twig_SimpleTest.');
        }

        if ($name instanceof TwigTest) {
            $test = $name;
            $name = $test->getName();
        } else {
            @trigger_error(sprintf('Passing a name as a first argument to the %s method is deprecated since version 1.21. Pass an instance of "Twig_SimpleTest" instead when defining test "%s".', __METHOD__, $name), E_USER_DEPRECATED);
        }

        if ($this->extensionInitialized) {
            throw new \LogicException(sprintf('Unable to add test "%s" as extensions have already been initialized.', $name));
        }

        $this->staging->addTest($name, $test);
    }

    /**
     * Gets the registered Tests.
     *
     * @return \Twig_TestInterface[]
     *
     * @internal
     */
    public function getTests()
    {
        if (!$this->extensionInitialized) {
            $this->initExtensions();
        }

        return $this->tests;
    }

    /**
     * Gets a test by name.
     *
     * @param string $name The test name
     *
     * @return \Twig_Test|false
     *
     * @internal
     */
    public function getTest($name)
    {
        if (!$this->extensionInitialized) {
            $this->initExtensions();
        }

        if (isset($this->tests[$name])) {
            return $this->tests[$name];
        }

        foreach ($this->tests as $pattern => $test) {
            $pattern = str_replace('\\*', '(.*?)', preg_quote($pattern, '#'), $count);

            if ($count) {
                if (preg_match('#^'.$pattern.'$#', $name, $matches)) {
                    array_shift($matches);
                    $test->setArguments($matches);

                    return $test;
                }
            }
        }

        return false;
    }

    /**
     * Registers a Function.
     *
     * @param string|TwigFunction                  $name     The function name or a \Twig_SimpleFunction instance
     * @param \Twig_FunctionInterface|TwigFunction $function
     */
    public function addFunction($name, $function = null)
    {
        if (!$name instanceof TwigFunction && !($function instanceof TwigFunction || $function instanceof \Twig_FunctionInterface)) {
            throw new \LogicException('A function must be an instance of \Twig_FunctionInterface or \Twig_SimpleFunction.');
        }

        if ($name instanceof TwigFunction) {
            $function = $name;
            $name = $function->getName();
        } else {
            @trigger_error(sprintf('Passing a name as a first argument to the %s method is deprecated since version 1.21. Pass an instance of "Twig_SimpleFunction" instead when defining function "%s".', __METHOD__, $name), E_USER_DEPRECATED);
        }

        if ($this->extensionInitialized) {
            throw new \LogicException(sprintf('Unable to add function "%s" as extensions have already been initialized.', $name));
        }

        $this->staging->addFunction($name, $function);
    }

    /**
     * Get a function by name.
     *
     * Subclasses may override this method and load functions differently;
     * so no list of functions is available.
     *
     * @param string $name function name
     *
     * @return \Twig_Function|false
     *
     * @internal
     */
    public function getFunction($name)
    {
        if (!$this->extensionInitialized) {
            $this->initExtensions();
        }

        if (isset($this->functions[$name])) {
            return $this->functions[$name];
        }

        foreach ($this->functions as $pattern => $function) {
            $pattern = str_replace('\\*', '(.*?)', preg_quote($pattern, '#'), $count);

            if ($count) {
                if (preg_match('#^'.$pattern.'$#', $name, $matches)) {
                    array_shift($matches);
                    $function->setArguments($matches);

                    return $function;
                }
            }
        }

        foreach ($this->functionCallbacks as $callback) {
            if (false !== $function = \call_user_func($callback, $name)) {
                return $function;
            }
        }

        return false;
    }

    public function registerUndefinedFunctionCallback($callable)
    {
        $this->functionCallbacks[] = $callable;
    }

    /**
     * Gets registered functions.
     *
     * Be warned that this method cannot return functions defined with registerUndefinedFunctionCallback.
     *
     * @return \Twig_FunctionInterface[]
     *
     * @see registerUndefinedFunctionCallback
     *
     * @internal
     */
    public function getFunctions()
    {
        if (!$this->extensionInitialized) {
            $this->initExtensions();
        }

        return $this->functions;
    }

    /**
     * Registers a Global.
     *
     * New globals can be added before compiling or rendering a template;
     * but after, you can only update existing globals.
     *
     * @param string $name  The global name
     * @param mixed  $value The global value
     */
    public function addGlobal($name, $value)
    {
        if ($this->extensionInitialized || $this->runtimeInitialized) {
            if (null === $this->globals) {
                $this->globals = $this->initGlobals();
            }

            if (!\array_key_exists($name, $this->globals)) {
                // The deprecation notice must be turned into the following exception in Twig 2.0
                @trigger_error(sprintf('Registering global variable "%s" at runtime or when the extensions have already been initialized is deprecated since version 1.21.', $name), E_USER_DEPRECATED);
                //throw new \LogicException(sprintf('Unable to add global "%s" as the runtime or the extensions have already been initialized.', $name));
            }
        }

        if ($this->extensionInitialized || $this->runtimeInitialized) {
            // update the value
            $this->globals[$name] = $value;
        } else {
            $this->staging->addGlobal($name, $value);
        }
    }

    /**
     * Gets the registered Globals.
     *
     * @return array An array of globals
     *
     * @internal
     */
    public function getGlobals()
    {
        if (!$this->runtimeInitialized && !$this->extensionInitialized) {
            return $this->initGlobals();
        }

        if (null === $this->globals) {
            $this->globals = $this->initGlobals();
        }

        return $this->globals;
    }

    /**
     * Merges a context with the defined globals.
     *
     * @param array $context An array representing the context
     *
     * @return array The context merged with the globals
     */
    public function mergeGlobals(array $context)
    {
        // we don't use array_merge as the context being generally
        // bigger than globals, this code is faster.
        foreach ($this->getGlobals() as $key => $value) {
            if (!\array_key_exists($key, $context)) {
                $context[$key] = $value;
            }
        }

        return $context;
    }

    /**
     * Gets the registered unary Operators.
     *
     * @return array An array of unary operators
     *
     * @internal
     */
    public function getUnaryOperators()
    {
        if (!$this->extensionInitialized) {
            $this->initExtensions();
        }

        return $this->unaryOperators;
    }

    /**
     * Gets the registered binary Operators.
     *
     * @return array An array of binary operators
     *
     * @internal
     */
    public function getBinaryOperators()
    {
        if (!$this->extensionInitialized) {
            $this->initExtensions();
        }

        return $this->binaryOperators;
    }

    /**
     * @deprecated since 1.23 (to be removed in 2.0)
     */
    public function computeAlternatives($name, $items)
    {
        @trigger_error(sprintf('The %s method is deprecated since version 1.23 and will be removed in Twig 2.0.', __METHOD__), E_USER_DEPRECATED);

        return SyntaxError::computeAlternatives($name, $items);
    }

    /**
     * @internal
     */
    protected function initGlobals()
    {
        $globals = [];
        foreach ($this->extensions as $name => $extension) {
            if (!$extension instanceof GlobalsInterface) {
                $m = new \ReflectionMethod($extension, 'getGlobals');

                $parentClass = $m->getDeclaringClass()->getName();
                if ('Twig_Extension' !== $parentClass && 'Twig\Extension\AbstractExtension' !== $parentClass) {
                    @trigger_error(sprintf('Defining the getGlobals() method in the "%s" extension without explicitly implementing Twig\Extension\GlobalsInterface is deprecated since version 1.23.', $name), E_USER_DEPRECATED);
                }
            }

            $extGlob = $extension->getGlobals();
            if (!\is_array($extGlob)) {
                throw new \UnexpectedValueException(sprintf('"%s::getGlobals()" must return an array of globals.', \get_class($extension)));
            }

            $globals[] = $extGlob;
        }

        $globals[] = $this->staging->getGlobals();

        return \call_user_func_array('array_merge', $globals);
    }

    /**
     * @internal
     */
    protected function initExtensions()
    {
        if ($this->extensionInitialized) {
            return;
        }

        $this->parsers = new \Twig_TokenParserBroker([], [], false);
        $this->filters = [];
        $this->functions = [];
        $this->tests = [];
        $this->visitors = [];
        $this->unaryOperators = [];
        $this->binaryOperators = [];

        foreach ($this->extensions as $extension) {
            $this->initExtension($extension);
        }
        $this->initExtension($this->staging);
        // Done at the end only, so that an exception during initialization does not mark the environment as initialized when catching the exception
        $this->extensionInitialized = true;
    }

    /**
     * @internal
     */
    protected function initExtension(ExtensionInterface $extension)
    {
        // filters
        foreach ($extension->getFilters() as $name => $filter) {
            if ($filter instanceof TwigFilter) {
                $name = $filter->getName();
            } else {
                @trigger_error(sprintf('Using an instance of "%s" for filter "%s" is deprecated since version 1.21. Use \Twig_SimpleFilter instead.', \get_class($filter), $name), E_USER_DEPRECATED);
            }

            $this->filters[$name] = $filter;
        }

        // functions
        foreach ($extension->getFunctions() as $name => $function) {
            if ($function instanceof TwigFunction) {
                $name = $function->getName();
            } else {
                @trigger_error(sprintf('Using an instance of "%s" for function "%s" is deprecated since version 1.21. Use \Twig_SimpleFunction instead.', \get_class($function), $name), E_USER_DEPRECATED);
            }

            $this->functions[$name] = $function;
        }

        // tests
        foreach ($extension->getTests() as $name => $test) {
            if ($test instanceof TwigTest) {
                $name = $test->getName();
            } else {
                @trigger_error(sprintf('Using an instance of "%s" for test "%s" is deprecated since version 1.21. Use \Twig_SimpleTest instead.', \get_class($test), $name), E_USER_DEPRECATED);
            }

            $this->tests[$name] = $test;
        }

        // token parsers
        foreach ($extension->getTokenParsers() as $parser) {
            if ($parser instanceof TokenParserInterface) {
                $this->parsers->addTokenParser($parser);
            } elseif ($parser instanceof \Twig_TokenParserBrokerInterface) {
                @trigger_error('Registering a \Twig_TokenParserBrokerInterface instance is deprecated since version 1.21.', E_USER_DEPRECATED);

                $this->parsers->addTokenParserBroker($parser);
            } else {
                throw new \LogicException('getTokenParsers() must return an array of \Twig_TokenParserInterface or \Twig_TokenParserBrokerInterface instances.');
            }
        }

        // node visitors
        foreach ($extension->getNodeVisitors() as $visitor) {
            $this->visitors[] = $visitor;
        }

        // operators
        if ($operators = $extension->getOperators()) {
            if (!\is_array($operators)) {
                throw new \InvalidArgumentException(sprintf('"%s::getOperators()" must return an array with operators, got "%s".', \get_class($extension), \is_object($operators) ? \get_class($operators) : \gettype($operators).(\is_resource($operators) ? '' : '#'.$operators)));
            }

            if (2 !== \count($operators)) {
                throw new \InvalidArgumentException(sprintf('"%s::getOperators()" must return an array of 2 elements, got %d.', \get_class($extension), \count($operators)));
            }

            $this->unaryOperators = array_merge($this->unaryOperators, $operators[0]);
            $this->binaryOperators = array_merge($this->binaryOperators, $operators[1]);
        }
    }

    /**
     * @deprecated since 1.22 (to be removed in 2.0)
     */
    protected function writeCacheFile($file, $content)
    {
        $this->cache->write($file, $content);
    }

    private function updateOptionsHash()
    {
        $hashParts = array_merge(
            array_keys($this->extensions),
            [
                (int) \function_exists('twig_template_get_attributes'),
                PHP_MAJOR_VERSION,
                PHP_MINOR_VERSION,
                self::VERSION,
                (int) $this->debug,
                $this->baseTemplateClass,
                (int) $this->strictVariables,
            ]
        );
        $this->optionsHash = implode(':', $hashParts);
    }
}

class_alias('Twig\Environment', 'Twig_Environment');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig;

use Twig\Node\Node;

/**
 * Represents a template filter.
 *
 * @final
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class TwigFilter
{
    protected $name;
    protected $callable;
    protected $options;
    protected $arguments = [];

    public function __construct($name, $callable, array $options = [])
    {
        $this->name = $name;
        $this->callable = $callable;
        $this->options = array_merge([
            'needs_environment' => false,
            'needs_context' => false,
            'is_variadic' => false,
            'is_safe' => null,
            'is_safe_callback' => null,
            'pre_escape' => null,
            'preserves_safety' => null,
            'node_class' => '\Twig\Node\Expression\FilterExpression',
            'deprecated' => false,
            'alternative' => null,
        ], $options);
    }

    public function getName()
    {
        return $this->name;
    }

    public function getCallable()
    {
        return $this->callable;
    }

    public function getNodeClass()
    {
        return $this->options['node_class'];
    }

    public function setArguments($arguments)
    {
        $this->arguments = $arguments;
    }

    public function getArguments()
    {
        return $this->arguments;
    }

    public function needsEnvironment()
    {
        return $this->options['needs_environment'];
    }

    public function needsContext()
    {
        return $this->options['needs_context'];
    }

    public function getSafe(Node $filterArgs)
    {
        if (null !== $this->options['is_safe']) {
            return $this->options['is_safe'];
        }

        if (null !== $this->options['is_safe_callback']) {
            return \call_user_func($this->options['is_safe_callback'], $filterArgs);
        }
    }

    public function getPreservesSafety()
    {
        return $this->options['preserves_safety'];
    }

    public function getPreEscape()
    {
        return $this->options['pre_escape'];
    }

    public function isVariadic()
    {
        return $this->options['is_variadic'];
    }

    public function isDeprecated()
    {
        return (bool) $this->options['deprecated'];
    }

    public function getDeprecatedVersion()
    {
        return $this->options['deprecated'];
    }

    public function getAlternative()
    {
        return $this->options['alternative'];
    }
}

class_alias('Twig\TwigFilter', 'Twig_SimpleFilter');

// Ensure that the aliased name is loaded to keep BC for classes implementing the typehint with the old aliased name.
class_exists('Twig\Node\Node');
<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig;

use Twig\Error\SyntaxError;

/**
 * Represents a token stream.
 *
 * @final
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class TokenStream
{
    protected $tokens;
    protected $current = 0;
    protected $filename;

    private $source;

    /**
     * @param array       $tokens An array of tokens
     * @param string|null $name   The name of the template which tokens are associated with
     * @param string|null $source The source code associated with the tokens
     */
    public function __construct(array $tokens, $name = null, $source = null)
    {
        if (!$name instanceof Source) {
            if (null !== $name || null !== $source) {
                @trigger_error(sprintf('Passing a string as the $name argument of %s() is deprecated since version 1.27. Pass a \Twig\Source instance instead.', __METHOD__), E_USER_DEPRECATED);
            }
            $this->source = new Source($source, $name);
        } else {
            $this->source = $name;
        }

        $this->tokens = $tokens;

        // deprecated, not used anymore, to be removed in 2.0
        $this->filename = $this->source->getName();
    }

    public function __toString()
    {
        return implode("\n", $this->tokens);
    }

    public function injectTokens(array $tokens)
    {
        $this->tokens = array_merge(\array_slice($this->tokens, 0, $this->current), $tokens, \array_slice($this->tokens, $this->current));
    }

    /**
     * Sets the pointer to the next token and returns the old one.
     *
     * @return Token
     */
    public function next()
    {
        if (!isset($this->tokens[++$this->current])) {
            throw new SyntaxError('Unexpected end of template.', $this->tokens[$this->current - 1]->getLine(), $this->source);
        }

        return $this->tokens[$this->current - 1];
    }

    /**
     * Tests a token, sets the pointer to the next one and returns it or throws a syntax error.
     *
     * @return Token|null The next token if the condition is true, null otherwise
     */
    public function nextIf($primary, $secondary = null)
    {
        if ($this->tokens[$this->current]->test($primary, $secondary)) {
            return $this->next();
        }
    }

    /**
     * Tests a token and returns it or throws a syntax error.
     *
     * @return Token
     */
    public function expect($type, $value = null, $message = null)
    {
        $token = $this->tokens[$this->current];
        if (!$token->test($type, $value)) {
            $line = $token->getLine();
            throw new SyntaxError(sprintf('%sUnexpected token "%s"%s ("%s" expected%s).',
                $message ? $message.'. ' : '',
                Token::typeToEnglish($token->getType()),
                $token->getValue() ? sprintf(' of value "%s"', $token->getValue()) : '',
                Token::typeToEnglish($type), $value ? sprintf(' with value "%s"', $value) : ''),
                $line,
                $this->source
            );
        }
        $this->next();

        return $token;
    }

    /**
     * Looks at the next token.
     *
     * @param int $number
     *
     * @return Token
     */
    public function look($number = 1)
    {
        if (!isset($this->tokens[$this->current + $number])) {
            throw new SyntaxError('Unexpected end of template.', $this->tokens[$this->current + $number - 1]->getLine(), $this->source);
        }

        return $this->tokens[$this->current + $number];
    }

    /**
     * Tests the current token.
     *
     * @return bool
     */
    public function test($primary, $secondary = null)
    {
        return $this->tokens[$this->current]->test($primary, $secondary);
    }

    /**
     * Checks if end of stream was reached.
     *
     * @return bool
     */
    public function isEOF()
    {
        return Token::EOF_TYPE === $this->tokens[$this->current]->getType();
    }

    /**
     * @return Token
     */
    public function getCurrent()
    {
        return $this->tokens[$this->current];
    }

    /**
     * Gets the name associated with this stream (null if not defined).
     *
     * @return string|null
     *
     * @deprecated since 1.27 (to be removed in 2.0)
     */
    public function getFilename()
    {
        @trigger_error(sprintf('The %s() method is deprecated since version 1.27 and will be removed in 2.0. Use getSourceContext() instead.', __METHOD__), E_USER_DEPRECATED);

        return $this->source->getName();
    }

    /**
     * Gets the source code associated with this stream.
     *
     * @return string
     *
     * @internal Don't use this as it might be empty depending on the environment configuration
     *
     * @deprecated since 1.27 (to be removed in 2.0)
     */
    public function getSource()
    {
        @trigger_error(sprintf('The %s() method is deprecated since version 1.27 and will be removed in 2.0. Use getSourceContext() instead.', __METHOD__), E_USER_DEPRECATED);

        return $this->source->getCode();
    }

    /**
     * Gets the source associated with this stream.
     *
     * @return Source
     *
     * @internal
     */
    public function getSourceContext()
    {
        return $this->source;
    }
}

class_alias('Twig\TokenStream', 'Twig_TokenStream');
Couscous

Copyright (C) Matthieu Napoli

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
associated documentation files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial
portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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