1 | var fs = require('fs');
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2 | var crypto = require('crypto');
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3 | var async = require('async');
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4 | var EventEmitter = require('events').EventEmitter;
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5 | var browserify = require('browserify');
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6 | var UglifyJS = require('uglify-js');
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7 | var cssmin = require('cssmin');
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8 | var path = require('path');
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9 | var mdeps = require('module-deps');
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10 | var meta = require('bundle-metadata');
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11 |
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12 |
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13 | function Moonboots(opts) {
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14 | var item;
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15 |
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16 | if (typeof opts !== 'object') {
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17 | throw new Error('Invalid options');
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18 | }
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19 |
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20 | if (!opts.main) {
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21 | throw new Error("You must supply at minimum a `main` file for your moonboots app: {main: 'myApp.js'}");
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22 | }
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23 |
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24 |
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25 | this.config = {
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26 | libraries: [],
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27 | stylesheets: [],
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28 | jsFileName: 'app',
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29 | cssFileName: 'styles',
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30 | browserify: {},
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31 | beforeBuildJS: function (cb) { cb(); },
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32 | beforeBuildCSS: function (cb) { cb(); },
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33 | sourceMaps: false,
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34 | resourcePrefix: '/',
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35 | minify: true,
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36 | cache: true,
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37 | developmentMode: false,
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38 | timingMode: false
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39 | };
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40 |
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41 |
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42 | this.result = {
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43 | js: {ext: 'js', source: ''},
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44 | css: {ext: 'css'},
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45 | html: {}
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46 | };
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47 |
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48 |
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49 | this.config.browserify.debug = this.config.sourceMaps;
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50 |
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51 | for (item in opts) {
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52 | this.config[item] = opts[item];
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53 | }
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54 |
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55 |
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56 | if (this.config.developmentMode) {
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57 | this.config.minify = false;
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58 | this.config.buildDirectory = undefined;
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59 | this.config.cache = false;
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60 | }
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61 |
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62 |
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63 | if (path.extname(this.config.jsFileName) === '.js') {
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64 | this.config.jsFileName = this.config.jsFileName.slice(0, -3);
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65 | }
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66 | if (path.extname(this.config.cssFileName) === '.css') {
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67 | this.config.cssFileName = this.config.cssFileName.slice(0, -4);
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68 | }
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69 |
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70 |
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71 | EventEmitter.call(this);
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72 | process.nextTick(this.build.bind(this));
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73 | }
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74 |
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75 |
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76 | Moonboots.prototype = Object.create(EventEmitter.prototype, {
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77 | constructor: {
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78 | value: Moonboots
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79 | }
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80 | });
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81 |
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82 |
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83 |
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84 | Moonboots.prototype.build = function () {
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85 | var self = this;
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86 |
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87 | self.timing('timing', 'build start');
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88 | async.series([
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89 | function _buildFiles(buildFilesDone) {
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90 | var parts;
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91 | if (!self.config.buildDirectory) {
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92 | return buildFilesDone();
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93 | }
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94 | fs.readdir(self.config.buildDirectory, function (err, files) {
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95 | self.timing('reading buildDirectory start');
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96 | if (err) {
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97 | self.config.buildDirectory = undefined;
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98 | return buildFilesDone();
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99 | }
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100 | async.each(files, function (fileName, next) {
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101 | if (path.extname(fileName) === '.js' && fileName.indexOf(self.config.jsFileName) === 0) {
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102 | return fs.readFile(path.join(self.config.buildDirectory, fileName), 'utf8', function (err, data) {
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103 | if (err) {
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104 | self.config.buildDirectory = undefined;
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105 | return next(true);
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106 | }
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107 | parts = fileName.split('.');
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108 | self.result.js.hash = parts[1];
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109 | self.result.js.source = data;
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110 | self.result.js.filename = fileName;
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111 | self.result.js.fromBuild = true;
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112 | next();
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113 | });
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114 | }
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115 | if (path.extname(fileName) === '.css' && fileName.indexOf(self.config.cssFileName) === 0) {
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116 | return fs.readFile(path.join(self.config.buildDirectory, fileName), 'utf8', function (err, data) {
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117 | if (err) {
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118 | self.config.buildDirectory = undefined;
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119 | return next(true);
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120 | }
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121 | parts = fileName.split('.');
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122 | self.result.css.hash = parts[1];
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123 | self.result.css.source = data;
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124 | self.result.css.filename = fileName;
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125 | self.result.css.fromBuild = true;
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126 | next();
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127 | });
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128 | }
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129 | next();
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130 | }, function () {
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131 | self.timing('reading buildDirectory finish');
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132 | buildFilesDone();
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133 | });
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134 | });
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135 | },
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136 | function _buildBundles(buildBundlesDone) {
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137 | if (self.result.js.filename && self.result.css.filename) {
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138 |
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139 | return buildBundlesDone();
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140 | }
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141 | async.parallel([
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142 | function _buildCSS(buildCSSDone) {
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143 | self.timing('build css start');
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144 |
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145 | if (!self.config.cache) {
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146 | self.result.css.hash = 'nonCached';
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147 | return buildCSSDone();
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148 | }
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149 | self.bundleCSS(true, buildCSSDone);
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150 | },
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151 | function _buildJS(buildJSDone) {
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152 |
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153 | if (!self.config.cache) {
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154 | self.result.js.hash = 'nonCached';
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155 | return buildJSDone();
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156 | }
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157 | self.bundleJS(true, buildJSDone);
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158 | }
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159 | ], buildBundlesDone);
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160 | },
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161 | function _setResults(setResultsDone) {
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162 | var cssFileName = self.config.cssFileName + '.' + self.result.css.hash;
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163 | var jsFileName = self.config.jsFileName + '.' + self.result.js.hash;
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164 |
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165 | if (self.config.minify) {
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166 | cssFileName += '.min';
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167 | jsFileName += '.min';
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168 | }
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169 |
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170 | cssFileName += '.css';
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171 | jsFileName += '.js';
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172 |
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173 | self.result.css.fileName = cssFileName;
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174 | self.result.js.fileName = jsFileName;
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175 |
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176 | self.result.html.source = '<!DOCTYPE html>\n';
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177 | if (self.config.stylesheets.length > 0) {
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178 | self.result.html.source += linkTag(self.config.resourcePrefix + self.cssFileName());
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179 | }
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180 | self.result.html.source += scriptTag(self.config.resourcePrefix + self.jsFileName());
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181 | self.result.html.context = {
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182 | jsFileName: self.result.js.fileName,
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183 | cssFileName: self.result.css.fileName
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184 | };
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185 | setResultsDone();
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186 | },
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187 | function _createBuildFiles(createBuildFilesDone) {
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188 | if (!self.config.buildDirectory) {
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189 | return createBuildFilesDone();
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190 | }
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191 |
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192 | async.parallel([
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193 | function (next) {
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194 | if (self.result.js.fromBuild) {
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195 | return next();
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196 | }
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197 | fs.writeFile(path.join(self.config.buildDirectory, self.result.css.fileName), self.result.css.source, next);
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198 | }, function (next) {
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199 | if (self.result.css.fromBuild) {
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200 | return next();
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201 | }
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202 | fs.writeFile(path.join(self.config.buildDirectory, self.result.js.fileName), self.result.js.source, next);
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203 | }
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204 | ], createBuildFilesDone);
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205 | }
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206 | ], function () {
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207 | self.timing('build finish');
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208 | self.emit('ready');
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209 | });
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210 | };
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211 |
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212 |
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213 | Moonboots.prototype.bundleCSS = function (setHash, done) {
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214 | var self = this;
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215 | async.series([
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216 | function _beforeBuildCSS(next) {
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217 | self.timing('beforeBuildCSS start');
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218 | self.config.beforeBuildCSS(function (err) {
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219 | self.timing('beforeBuildCSS finish');
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220 | next(err);
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221 | });
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222 | },
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223 | function _buildCSS(next) {
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224 | var csssha;
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225 | self.timing('buildCSS start');
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226 | self.result.css.source = concatFiles(self.config.stylesheets);
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227 | if (setHash) {
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228 | csssha = crypto.createHash('sha1');
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229 | csssha.update(self.result.css.source);
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230 | self.result.css.hash = csssha.digest('hex').slice(0, 8);
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231 | }
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232 | if (self.config.minify) {
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233 | self.result.css.source = cssmin(self.result.css.source);
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234 | }
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235 | self.timing('buildCSS finish');
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236 | next();
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237 | }
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238 | ], function _bundleCSSDone() {
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239 | done(null, self.result.css.source);
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240 | });
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241 | };
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242 |
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243 |
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244 | Moonboots.prototype.bundleJS = function (setHash, done) {
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245 | var self = this;
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246 | var jssha = crypto.createHash('sha1');
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247 | async.series([
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248 | function _beforeBuildJS(next) {
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249 | self.timing('beforeBuildJS start');
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250 | self.config.beforeBuildJS(function (err) {
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251 | self.timing('beforeBuildJS finish');
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252 | next(err);
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253 | });
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254 | },
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255 | function _concatLibs(next) {
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256 |
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257 | self.timing('build libraries start');
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258 | self.result.js.source = concatFiles(self.config.libraries);
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259 | jssha.update(self.result.js.source);
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260 | self.timing('build libraries finish');
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261 | next();
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262 | },
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263 | function (next) {
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264 | self.browserify(setHash, next);
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265 | },
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266 | function (next) {
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267 | if (setHash) {
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268 | jssha.update(self.result.js.bundleHash);
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269 | self.result.js.hash = jssha.digest('hex').slice(0, 8);
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270 | }
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271 | if (self.config.minify) {
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272 | self.timing('minify start');
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273 | self.result.js.source = UglifyJS.minify(self.result.js.source, {fromString: true}).code;
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274 | self.timing('minify finish');
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275 | }
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276 | next();
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277 | }
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278 | ], function _bundleJSDone(err) {
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279 | if (err) {
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280 | self.emit('log', ['moonboots', 'error'], err);
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281 | if (self.config.developmentMode) {
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282 | self.result.js.source = errorTrace(err);
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283 | }
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284 | }
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285 | done(null, self.result.js.source);
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286 | });
|
287 | };
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288 |
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289 |
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290 | Moonboots.prototype.browserify = function (setHash, done) {
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291 | var modules, args, bundle, hashBundle;
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292 | var self = this;
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293 |
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294 | self.emit('timing', 'browserify start');
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295 |
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296 |
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297 |
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298 |
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299 | bundle = browserify();
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300 | if (setHash) {
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301 | hashBundle = browserify();
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302 | }
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303 |
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304 |
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305 | if (self.config.modulesDir) {
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306 | modules = fs.readdirSync(self.config.modulesDir);
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307 | modules.forEach(function (moduleFileName) {
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308 | if (path.extname(moduleFileName) === '.js') {
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309 | args = [
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310 | path.join(self.config.modulesDir, moduleFileName),
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311 | {expose: path.basename(moduleFileName, '.js')}
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312 | ];
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313 | bundle.require.apply(bundle, args);
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314 | if (setHash) {
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315 | hashBundle.require.apply(hashBundle, args);
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316 | }
|
317 | }
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318 | });
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319 | }
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320 |
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321 |
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322 | if (self.config.browserify.transforms) {
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323 | self.config.browserify.transforms.forEach(function (tr) {
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324 | bundle.transform(tr);
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325 | if (setHash) {
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326 | hashBundle.transform(tr);
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327 | }
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328 | });
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329 | }
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330 |
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331 |
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332 | bundle.add(self.config.main);
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333 |
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334 | async.series([
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335 | function (next) {
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336 |
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337 | bundle.bundle(self.config.browserify, function (err, js) {
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338 | self.result.js.source = self.result.js.source + js;
|
339 | next(err);
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340 | });
|
341 | },
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342 | function (next) {
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343 | if (!setHash) {
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344 | return next();
|
345 | }
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346 |
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347 | mdeps(self.config.main, {
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348 | resolve: hashBundle._resolve.bind(hashBundle)
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349 | })
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350 | .pipe(meta().on('hash', function (hash) {
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351 | self.result.js.bundleHash = hash;
|
352 | next();
|
353 | }));
|
354 | },
|
355 | ], function (err) {
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356 | self.timing('browserify finish');
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357 | done(err);
|
358 | });
|
359 | };
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360 |
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361 |
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362 |
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363 |
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364 |
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365 |
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366 |
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367 | Moonboots.prototype.jsSource = function (cb) {
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368 | if (this.config.cache) {
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369 | return cb(null, this.result.js.source);
|
370 | }
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371 | this.bundleJS(false, cb);
|
372 | };
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373 |
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374 |
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375 | Moonboots.prototype.cssSource = function (cb) {
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376 | if (this.config.cache) {
|
377 | return cb(null, this.result.css.source);
|
378 | }
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379 | this.bundleCSS(false, cb);
|
380 | };
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381 |
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382 |
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383 | Moonboots.prototype.jsFileName = function () {
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384 | return this.result.js.fileName;
|
385 | };
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386 |
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387 |
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388 | Moonboots.prototype.cssFileName = function () {
|
389 | return this.result.css.fileName;
|
390 | };
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391 |
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392 |
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393 | Moonboots.prototype.htmlContext = function () {
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394 | return this.result.html.context;
|
395 | };
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396 |
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397 |
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398 | Moonboots.prototype.htmlSource = function () {
|
399 | return this.result.html.source;
|
400 | };
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401 |
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402 | Moonboots.prototype.timing = function (message) {
|
403 | if (this.config.timingMode) {
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404 | this.emit('log', ['moonboots', 'timing', 'debug'], message, Date.now());
|
405 | }
|
406 | };
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407 |
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408 |
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409 |
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410 |
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411 |
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412 |
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413 | module.exports = Moonboots;
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414 |
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415 |
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416 |
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417 | function concatFiles(arrayOfFiles) {
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418 | return arrayOfFiles.map(function (fileName) {
|
419 | return fs.readFileSync(fileName);
|
420 | }).join('\n');
|
421 | }
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422 |
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423 | function linkTag(filename) {
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424 | return '<link href="' + filename + '" rel="stylesheet" type="text/css">\n';
|
425 | }
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426 |
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427 | function scriptTag(filename) {
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428 | return '<script src="' + filename + '"></script>';
|
429 | }
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430 |
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431 | function errorTrace(err) {
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432 | var trace;
|
433 | if (err.stack) {
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434 | trace = err.stack;
|
435 | } else {
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436 | trace = JSON.stringify(err);
|
437 | }
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438 | trace = trace.split('\n').join('<br>').replace(/"/g, '"');
|
439 | return 'document.write("<pre style=\'background:#ECFOF2; color:#444; padding: 20px\'>' + trace + '</pre>");';
|
440 | }
|