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More information: https://www.jsdelivr.com/using-sri-with-dynamic-files\n */\n","// Copyright (c) 2014 Romain Francez and other askr contributors.\n//\n// This file is part of askr.\n//\n// askr is free software: you can redistribute it and/or modify\n// it under the terms of the GNU General Public License as published by\n// the Free Software Foundation, version 3 of the License.\n//\n// askr is distributed in the hope that it will be useful,\n// but WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT\n// NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS\n// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL\n// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE. See the GNU General Public License\n// for more details.\n//\n// You should have received a copy of the GNU General Public License\n// along with askr. If not, see .\n\n/**\n * @file Askr\n * @author Romain Francez\n * {@link https://github.com/romainfrancez|@romainfrancez}\n */\n(function () {\n 'use strict';\n\n var\n blackhole = require('blackhole'),\n mustache = require('mustache'),\n readline = require('readline'),\n\n ask,\n getCaseInsensitiveMatch;\n\n /**\n * @param {Array} array the different values to match against\n * @param {String} value the value to match\n * @returns {String} the value of array that matches value\n */\n getCaseInsensitiveMatch = function (array, value) {\n var\n l = array.length,\n lowerCaseValue = value.toLowerCase();\n\n while (l) {\n l -= 1;\n if (array[l].toLowerCase() === lowerCaseValue) {\n return array[l];\n }\n }\n };\n\n /**\n * Asks questions and call callback on completion\n * @param {Object} questions questions to ask\n * @param {Object} answers if some answers are already answered,\n * will skip them\n * @param {Function} callback the function to call on completion\n */\n ask = function (questions, answers, callback) {\n var\n askOne,\n keys = Object.keys(questions),\n l = keys.length,\n next,\n rl;\n \n if (typeof answers === 'function') {\n callback = answers;\n answers = {};\n }\n\n callback = callback || blackhole;\n\n if (l === 0) {\n return callback(null, answers);\n }\n\n /**\n * Asks a question and processes the answer\n * @param {Number} i the question number that is asked\n * @param {Function} [callback] the function to execute after\n * the question has been replied\n */\n askOne = function (i, callback) {\n var\n hasDefault = false,\n hasOptions = false,\n key = keys[i],\n optionsSeparator = '/',\n question = questions[key],\n questionDisplay = question.text,\n vars = {};\n\n callback = callback || blackhole;\n\n if (answers[key] !== undefined ||\n questionDisplay === undefined || questionDisplay === null) {\n return callback('skip', i + 1);\n }\n\n if (question.default !== undefined) {\n hasDefault = true;\n vars.default = question.default;\n }\n if (question.options !== undefined) {\n hasOptions = true;\n vars.options = question.options.join(question.optionsSeparator ||\n optionsSeparator);\n }\n\n if (questionDisplay.indexOf('{{options}}') === -1 && hasOptions) {\n questionDisplay = questionDisplay.trim() + ' ({{{options}}}) ';\n }\n if (questionDisplay.indexOf('{{default}}') === -1 && hasDefault) {\n questionDisplay = questionDisplay.trim() + ' [{{{default}}}] ';\n }\n\n rl.question(mustache.render(questionDisplay, vars), function (answer) {\n if (answer === undefined || answer.length === 0) {\n if (hasDefault) {\n answer = question.default;\n } else if (question.required) {\n return callback('required', i);\n }\n }\n\n if (hasOptions) {\n answer = getCaseInsensitiveMatch(question.options, answer);\n if (answer === undefined) {\n return callback('no_match', i);\n }\n }\n\n answers[key] = answer;\n callback(null, i + 1);\n });\n };\n\n /**\n * Callback for the next iteration\n * @param {Object} err\n * @param {Number} i the index of the next question\n */\n next = function (err, i) {\n if (i < l) {\n if (err === null || err === undefined) {\n console.log();\n }\n askOne(i, next);\n } else {\n rl.close();\n callback(null, answers);\n }\n };\n\n rl = readline.createInterface({\n input: process.stdin,\n output: process.stdout\n });\n\n askOne(0, next);\n };\n\n exports.ask = ask;\n}());"]}