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| 1 | +/// <reference path="../typings/tsd" /> |
| 2 | +'use strict'; |
| 3 | +var runSequence = require('run-sequence'); |
| 4 | +var _ = require('lodash'); |
| 5 | +var path = require('path'); |
| 6 | +var fs = require('fs'); |
| 7 | +var chalk = require('chalk'); |
| 8 | +var isVerbose = process.argv.indexOf('--verbose') > -1; |
| 9 | +var build = { |
| 10 | + rootDir: null, |
| 11 | + gulp: null, |
| 12 | + preDependencies: {}, |
| 13 | + dependencies: {}, |
| 14 | + postDependencies: {}, |
| 15 | + config: {}, |
| 16 | + initializeTasks: function (gulp, userOptions, buildPath) { |
| 17 | + this.gulp = gulp; |
| 18 | + this.rootDir = process.cwd(); |
| 19 | + // Initialize runSequence. |
| 20 | + runSequence = runSequence.use(gulp); |
| 21 | + // Fetch tasks and options dynamically. |
| 22 | + var tasks = requireDir(path.resolve(__dirname, './tasks')); |
| 23 | + var localTasks = buildPath ? requireDir(path.resolve(buildPath, 'tasks')) : {}; |
| 24 | + var allDefaultOptions = requireDir(path.resolve(__dirname, './options')); |
| 25 | + var allLocalDefaultOptions = buildPath ? requireDir(path.resolve(buildPath, 'options')) : {}; |
| 26 | + function initializeTask(taskName, task) { |
| 27 | + if (task.registerTasks) { |
| 28 | + var localDefaultOptions = allLocalDefaultOptions[taskName]; |
| 29 | + var defaultOptions = allDefaultOptions[taskName]; |
| 30 | + var taskOptions = _.merge({}, (localDefaultOptions || {}).default, (defaultOptions || {}).default, (userOptions || {})[taskName]); |
| 31 | + build.config[taskName] = taskOptions; |
| 32 | + task.registerTasks(build, taskOptions); |
| 33 | + } |
| 34 | + } |
| 35 | + // Initialize local tasks first. |
| 36 | + for (var taskName in localTasks) { |
| 37 | + if (localTasks.hasOwnProperty(taskName)) { |
| 38 | + initializeTask(taskName, localTasks[taskName].default); |
| 39 | + } |
| 40 | + } |
| 41 | + // Initialize core tasks, which need to be registered after dependencies are mapped out. |
| 42 | + for (var taskName in tasks) { |
| 43 | + if (tasks.hasOwnProperty(taskName)) { |
| 44 | + initializeTask(taskName, tasks[taskName].default); |
| 45 | + } |
| 46 | + } |
| 47 | + }, |
| 48 | + task: function (taskName, dependencies, callback) { |
| 49 | + var _this = this; |
| 50 | + var gulp = build.gulp; |
| 51 | + // Support no dependencies. |
| 52 | + if (arguments.length === 2 && typeof dependencies === 'function') { |
| 53 | + callback = dependencies; |
| 54 | + dependencies = null; |
| 55 | + } |
| 56 | + // Merge dependencies provided with those registered. |
| 57 | + dependencies = (build.dependencies[taskName] || []).concat(dependencies || []); |
| 58 | + var preDependencies = build.preDependencies[taskName] || []; |
| 59 | + var postDependencies = build.postDependencies[taskName] || []; |
| 60 | + if (preDependencies.length || postDependencies.length) { |
| 61 | + var internalTask = taskName + '-complete'; |
| 62 | + gulp.task(internalTask, callback); |
| 63 | + return gulp.task(taskName, function (cb) { |
| 64 | + var args = []; |
| 65 | + if (preDependencies.length) { |
| 66 | + args.push(preDependencies); |
| 67 | + } |
| 68 | + if (dependencies.length) { |
| 69 | + args.push(dependencies); |
| 70 | + } |
| 71 | + args.push(internalTask); |
| 72 | + if (postDependencies.length) { |
| 73 | + args.push(postDependencies); |
| 74 | + } |
| 75 | + args.push(cb); |
| 76 | + runSequence.apply(_this, args); |
| 77 | + }); |
| 78 | + } |
| 79 | + else { |
| 80 | + return gulp.task(taskName, dependencies, callback); |
| 81 | + } |
| 82 | + }, |
| 83 | + doBefore: function (parentTaskName, taskName) { |
| 84 | + if (typeof taskName === 'object' && taskName.length) { |
| 85 | + // Support arrays of tasks to register. |
| 86 | + taskName.forEach(function (task) { return build.doBefore(task, parentTaskName); }); |
| 87 | + } |
| 88 | + else { |
| 89 | + addToMap(parentTaskName, taskName, build.preDependencies); |
| 90 | + } |
| 91 | + }, |
| 92 | + doDuring: function (parentTaskName, taskName) { |
| 93 | + if (typeof taskName === 'object' && taskName.length) { |
| 94 | + // Support arrays of tasks to register. |
| 95 | + taskName.forEach(function (task) { return build.doDuring(task, parentTaskName); }); |
| 96 | + } |
| 97 | + else { |
| 98 | + addToMap(parentTaskName, taskName, build.dependencies); |
| 99 | + } |
| 100 | + }, |
| 101 | + doAfter: function (parentTaskName, taskName) { |
| 102 | + if (typeof taskName === 'object' && taskName.length) { |
| 103 | + // Support arrays of tasks to register. |
| 104 | + taskName.forEach(function (task) { return build.doAfter(task, parentTaskName); }); |
| 105 | + } |
| 106 | + else { |
| 107 | + addToMap(parentTaskName, taskName, build.postDependencies); |
| 108 | + } |
| 109 | + }, |
| 110 | + log: function (message) { |
| 111 | + console.log(message); |
| 112 | + }, |
| 113 | + logError: function (errorMessage) { |
| 114 | + build.log(chalk.red('Error: ') + errorMessage); |
| 115 | + }, |
| 116 | + logVerbose: function (message) { |
| 117 | + if (isVerbose) { |
| 118 | + build.log(message); |
| 119 | + } |
| 120 | + } |
| 121 | +}; |
| 122 | +function requireDir(requirePath) { |
| 123 | + var loadDir = require('require-dir'); |
| 124 | + return (fs.existsSync(requirePath)) ? loadDir(requirePath) : {}; |
| 125 | +} |
| 126 | +function addToMap(parentTaskName, taskName, map) { |
| 127 | + if (!map[parentTaskName]) { |
| 128 | + map[parentTaskName] = []; |
| 129 | + } |
| 130 | + map[parentTaskName].push(taskName); |
| 131 | +} |
| 132 | +module.exports = build; |
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