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| // See README.md for details.
// Inspired by require-all and require-dir packages:
// https://github.com/felixge/node-require-all
// https://github.com/aseemk/requireDir
'use strict';
var fs = require('fs'),
path = require('path');
// Replacement for Object.assign() for node 0.10-0.12
var object_assign = require('./assign');
// Trick taken from https://github.com/aseemk/requireDir/blob/master/index.js
//
// make a note of the calling file's path, so that we can resolve relative
// paths. this only works if a fresh version of this module is run on every
// require(), so important: we clear the require() cache each time!
delete require.cache[__filename];
//
var parentModule = module.parent;
var parentFile = parentModule.filename;
var parentDir = path.dirname(parentFile);
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Require Module definition (passed to map function)
*
* @typedef {object} RequireModule
* @property {string} filename - filename with extension, without path
* @property {string} ext - file extension
* @property {string} base - filename without extension
* @property {string} filepath - full file path
* @property {string} name - module name
* @property {{}} exports - module's exports
*/
/**
* Map function
*
* @callback RequireMap
* @param {RequireModule} requireModule
*/
/**
* Options for require-dir-all
*
* @typedef {object} RequireOptions
* @property {boolean} [recursive=false] - go recursively into subdirectories
* @property {boolean} [indexAsParent=false] - exports of 'index' files will be added
* directly to object corresponding to the
* directory with this 'index' file, not to
* its child object named 'index'
* (as by default)
* @property {RegExp} [excludeDirs] - RegExp to exclude directories
* @property {RegExp} [includeFiles] - RegExp to include files
* @property {RequireMap} [map] - map function to be called for each require'd module
*/
/**
* Check if the module to be excluded
*
* @param {RequireModule} reqModule
* @param {RegExp} reIncludeFiles
* @returns {boolean}
*/
function isExcludedFile(reqModule, reIncludeFiles) {
return !! ( (reqModule.filepath === parentFile) || // Exclude require'ing file
(reIncludeFiles && !reqModule.filename.match(reIncludeFiles)) ); // Exclude files non-matched to pattern includeFiles
}
/**
* Check if the directory to be excluded
*
* @param {RequireModule} reqModule
* @param {RegExp} reExcludeDirs
* @returns {boolean}
*/
function isExcludedDir(reqModule, reExcludeDirs) {
return !! ( reExcludeDirs && reqModule.filename.match(reExcludeDirs) );
}
/**
* Main function. Recursively go through directories and require modules according to options
*
* @param {string} absDir
* @param {RequireOptions} options
* @returns {object}
* @private
*/
function _requireDirAll(absDir, options) {
var modules = {};
var files = fs.readdirSync(absDir);
for (var length=files.length, i=0; i<length; ++i) {
var reqModule = {};
reqModule.filename = files[i]; // full filename without path
reqModule.ext = path.extname(reqModule.filename); // file extension
reqModule.base = path.basename(reqModule.filename, reqModule.ext); // filename without extension
reqModule.filepath = path.join(absDir, reqModule.filename); // full filename with absolute path
//console.log('reqModule:', reqModule);
// If this is subdirectory, then descend recursively into it (excluding matching patter excludeDirs)
if (fs.statSync(reqModule.filepath).isDirectory() &&
options.recursive &&
! isExcludedDir(reqModule, options.excludeDirs) ) {
// use filename (with extension) instead of base name (without extension)
// to keep complete directory name for directories with '.', like 'dir.1.2.3'
reqModule.name = reqModule.filename;
// go recursively into subdirectory
//if (typeof modules === 'undefined') {
// modules = {};
//}
modules[reqModule.name] = _requireDirAll(reqModule.filepath, options);
} else if ( ! isExcludedFile(reqModule, options.includeFiles)) {
reqModule.name = reqModule.base;
reqModule.exports = require(reqModule.filepath);
if (options.map) {
options.map(reqModule);
}
var source = reqModule.exports;
var target = (reqModule.name === 'index' && options.indexAsParent) ? modules : modules && modules[ reqModule.name ];
var sourceIsObject = (typeof source === 'object');
var targetIsObject = (typeof target === 'object');
//var targetUnassigned = (typeof target === 'undefined');
if (sourceIsObject && targetIsObject) {
if (Object.assign) {
Object.assign(target, source);
} else {
object_assign(target, source);
}
} else //if (
//(!sourceIsObject && !targetIsObject) || // if source and target both are not objects or...
//(targetUnassigned) // if target is not yet assigned, we may assign any type to it
//)
{
target = source;
//} else {
// console.log('!!!! ' +
// ' source:', source,
// ' target:', target,
// '; sourceIsObject:', sourceIsObject,
// '; targetIsObject:', targetIsObject,
// '; targetUnassigned:', targetUnassigned,
// '');
// throw 'Not possible to mix objects with scalar or array values: ' +
// 'filepath: '+ reqModule.filepath + '; ' +
// 'modules: '+ JSON.stringify(modules) + '; ' +
// 'exports: '+ JSON.stringify(reqModule.exports)
// ;
}
if (reqModule.name === 'index' && options.indexAsParent) {
modules = target;
} else {
//if (typeof modules === 'undefined') {
// modules = {};
//}
modules[ reqModule.name ] = target;
}
}
}
return modules;
}
/**
* Main entry point. Analyse input parameters and invoke main function _requireDirAll()
*
* @param { string||string[] } [relOrAbsDir] - Directory or array of directories to 'require'
* @param {RequireOptions} [options] - Set of options
* @returns {object || object[]} - Returns object with require'd modules or array of such objects
* @public
*/
module.exports = function requireDirAll(relOrAbsDir, options) {
relOrAbsDir = relOrAbsDir || '.';
options = options || {};
options.recursive = options.recursive || false;
options.indexAsParent = options.indexAsParent || false;
options.includeFiles = options.includeFiles || /^.*\.(js|json|coffee)$/;
options.excludeDirs = options.excludeDirs || /^(\.git|\.svn|node_modules)$/;
options.map = options.map || null;
var absDir;
if (typeof relOrAbsDir === 'string') {
absDir = path.resolve(parentDir, relOrAbsDir);
//console.log('relOrAbsDir:', relOrAbsDir, '; options:', options);
return _requireDirAll(absDir, options);
} else { // Assume it is array
var modulesArray = [];
for (var length=relOrAbsDir.length, i=0; i<length; ++i) {
//console.log('relOrAbsDir:', relOrAbsDir, '; options:', options);
absDir = path.resolve(parentDir, relOrAbsDir[i]);
modulesArray.push(_requireDirAll(absDir, options));
}
return modulesArray;
}
};
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