1 | #!/usr/bin/env node
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28 | 'use strict';
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29 |
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30 | var camelCase = require('camel-case');
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31 | var fs = require('fs');
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32 | var info = require('./package.json');
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33 | var minify = require('./' + info.main).minify;
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34 | var paramCase = require('param-case');
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35 | var path = require('path');
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36 | var program = require('commander');
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37 |
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38 | program._name = info.name;
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39 | program.version(info.version);
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40 |
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41 | function fatal(message) {
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42 | console.error(message);
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43 | process.exit(1);
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44 | }
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45 |
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60 |
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61 |
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62 |
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63 |
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64 | function parseRegExp(value) {
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65 | if (value) {
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66 | return new RegExp(value.replace(/^\/(.*)\/$/, '$1'));
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67 | }
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68 | }
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69 |
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70 | function parseJSON(value) {
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71 | if (value) {
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72 | try {
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73 | return JSON.parse(value);
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74 | }
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75 | catch (e) {
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76 | if (/^{/.test(value)) {
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77 | fatal('Could not parse JSON value \'' + value + '\'');
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78 | }
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79 | return value;
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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 | function parseJSONArray(value) {
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85 | if (value) {
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86 | value = parseJSON(value);
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87 | return Array.isArray(value) ? value : [value];
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88 | }
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89 | }
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90 |
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91 | function parseJSONRegExpArray(value) {
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92 | value = parseJSONArray(value);
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93 | return value && value.map(parseRegExp);
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94 | }
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95 |
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96 | function parseString(value) {
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97 | return value;
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98 | }
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99 |
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100 | var mainOptions = {
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101 | caseSensitive: 'Treat attributes in case sensitive manner (useful for SVG; e.g. viewBox)',
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102 | collapseBooleanAttributes: 'Omit attribute values from boolean attributes',
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103 | collapseInlineTagWhitespace: 'Collapse white space around inline tag',
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104 | collapseWhitespace: 'Collapse white space that contributes to text nodes in a document tree.',
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105 | conservativeCollapse: 'Always collapse to 1 space (never remove it entirely)',
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106 | continueOnParseError: 'Handle parse errors instead of aborting',
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107 | customAttrAssign: ['Arrays of regex\'es that allow to support custom attribute assign expressions (e.g. \'<div flex?="{{mode != cover}}"></div>\')', parseJSONRegExpArray],
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108 | customAttrCollapse: ['Regex that specifies custom attribute to strip newlines from (e.g. /ng-class/)', parseRegExp],
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109 | customAttrSurround: ['Arrays of regex\'es that allow to support custom attribute surround expressions (e.g. <input {{#if value}}checked="checked"{{/if}}>)', parseJSONRegExpArray],
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110 | customEventAttributes: ['Arrays of regex\'es that allow to support custom event attributes for minifyJS (e.g. ng-click)', parseJSONRegExpArray],
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111 | decodeEntities: 'Use direct Unicode characters whenever possible',
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112 | html5: 'Parse input according to HTML5 specifications',
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113 | ignoreCustomComments: ['Array of regex\'es that allow to ignore certain comments, when matched', parseJSONRegExpArray],
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114 | ignoreCustomFragments: ['Array of regex\'es that allow to ignore certain fragments, when matched (e.g. <?php ... ?>, {{ ... }})', parseJSONRegExpArray],
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115 | includeAutoGeneratedTags: 'Insert tags generated by HTML parser',
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116 | keepClosingSlash: 'Keep the trailing slash on singleton elements',
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117 | maxLineLength: ['Max line length', parseInt],
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118 | minifyCSS: ['Minify CSS in style elements and style attributes (uses clean-css)', parseJSON],
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119 | minifyJS: ['Minify Javascript in script elements and on* attributes (uses uglify-js)', parseJSON],
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120 | minifyURLs: ['Minify URLs in various attributes (uses relateurl)', parseJSON],
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121 | preserveLineBreaks: 'Always collapse to 1 line break (never remove it entirely) when whitespace between tags include a line break.',
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122 | preventAttributesEscaping: 'Prevents the escaping of the values of attributes.',
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123 | processConditionalComments: 'Process contents of conditional comments through minifier',
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124 | processScripts: ['Array of strings corresponding to types of script elements to process through minifier (e.g. "text/ng-template", "text/x-handlebars-template", etc.)', parseJSONArray],
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125 | quoteCharacter: ['Type of quote to use for attribute values (\' or ")', parseString],
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126 | removeAttributeQuotes: 'Remove quotes around attributes when possible.',
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127 | removeComments: 'Strip HTML comments',
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128 | removeEmptyAttributes: 'Remove all attributes with whitespace-only values',
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129 | removeEmptyElements: 'Remove all elements with empty contents',
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130 | removeOptionalTags: 'Remove unrequired tags',
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131 | removeRedundantAttributes: 'Remove attributes when value matches default.',
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132 | removeScriptTypeAttributes: 'Remove type="text/javascript" from script tags. Other type attribute values are left intact.',
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133 | removeStyleLinkTypeAttributes: 'Remove type="text/css" from style and link tags. Other type attribute values are left intact.',
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134 | removeTagWhitespace: 'Remove space between attributes whenever possible',
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135 | sortAttributes: 'Sort attributes by frequency',
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136 | sortClassName: 'Sort style classes by frequency',
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137 | trimCustomFragments: 'Trim white space around ignoreCustomFragments.',
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138 | useShortDoctype: 'Replaces the doctype with the short (HTML5) doctype'
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139 | };
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140 | var mainOptionKeys = Object.keys(mainOptions);
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141 | mainOptionKeys.forEach(function(key) {
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142 | var option = mainOptions[key];
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143 | if (Array.isArray(option)) {
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144 | key = key === 'minifyURLs' ? '--minify-urls' : '--' + paramCase(key);
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145 | key += option[1] === parseJSON ? ' [value]' : ' <value>';
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146 | program.option(key, option[0], option[1]);
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147 | }
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148 | else if (~['html5', 'includeAutoGeneratedTags'].indexOf(key)) {
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149 | program.option('--no-' + paramCase(key), option);
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150 | }
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151 | else {
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152 | program.option('--' + paramCase(key), option);
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153 | }
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154 | });
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155 | program.option('-o --output <file>', 'Specify output file (if not specified STDOUT will be used for output)');
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156 |
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157 | function readFile(file) {
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158 | try {
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159 | return fs.readFileSync(file, { encoding: 'utf8' });
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160 | }
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161 | catch (e) {
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162 | fatal('Cannot read ' + file + '\n' + e.message);
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163 | }
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164 | }
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165 |
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166 | var config = {};
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167 | program.option('-c --config-file <file>', 'Use config file', function(configPath) {
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168 | var data = readFile(configPath);
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169 | try {
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170 | config = JSON.parse(data);
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171 | }
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172 | catch (je) {
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173 | try {
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174 | config = require(path.resolve(configPath));
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175 | }
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176 | catch (ne) {
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177 | fatal('Cannot read the specified config file.\nAs JSON: ' + je.message + '\nAs module: ' + ne.message);
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178 | }
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179 | }
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180 | mainOptionKeys.forEach(function(key) {
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181 | if (key in config) {
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182 | var option = mainOptions[key];
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183 | if (Array.isArray(option)) {
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184 | var value = config[key];
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185 | config[key] = option[1](typeof value === 'string' ? value : JSON.stringify(value));
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186 | }
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187 | }
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188 | });
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189 | });
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190 | program.option('--input-dir <dir>', 'Specify an input directory');
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191 | program.option('--output-dir <dir>', 'Specify an output directory');
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192 | program.option('--file-ext <text>', 'Specify an extension to be read, ex: html');
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193 | var content;
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194 | program.arguments('[files...]').action(function(files) {
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195 | content = files.map(readFile).join('');
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196 | }).parse(process.argv);
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197 |
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198 | function createOptions() {
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199 | var options = {};
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200 | mainOptionKeys.forEach(function(key) {
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201 | var param = program[key === 'minifyURLs' ? 'minifyUrls' : camelCase(key)];
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202 | if (typeof param !== 'undefined') {
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203 | options[key] = param;
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204 | }
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205 | else if (key in config) {
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206 | options[key] = config[key];
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207 | }
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208 | });
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209 | return options;
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210 | }
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211 |
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212 | function mkdir(outputDir, callback) {
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213 | fs.mkdir(outputDir, function(err) {
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214 | if (err) {
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215 | switch (err.code) {
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216 | case 'ENOENT':
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217 | return mkdir(path.join(outputDir, '..'), function() {
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218 | mkdir(outputDir, callback);
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219 | });
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220 | case 'EEXIST':
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221 | break;
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222 | default:
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223 | fatal('Cannot create directory ' + outputDir + '\n' + err.message);
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224 | }
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225 | }
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226 | callback();
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227 | });
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228 | }
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229 |
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230 | function processFile(inputFile, outputFile) {
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231 | fs.readFile(inputFile, { encoding: 'utf8' }, function(err, data) {
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232 | if (err) {
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233 | fatal('Cannot read ' + inputFile + '\n' + err.message);
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234 | }
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235 | var minified;
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236 | try {
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237 | minified = minify(data, createOptions());
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238 | }
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239 | catch (e) {
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240 | fatal('Minification error on ' + inputFile + '\n' + e.message);
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241 | }
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242 | fs.writeFile(outputFile, minified, { encoding: 'utf8' }, function(err) {
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243 | if (err) {
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244 | fatal('Cannot write ' + outputFile + '\n' + err.message);
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245 | }
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246 | });
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247 | });
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248 | }
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249 |
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250 | function processDirectory(inputDir, outputDir, fileExt) {
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251 | fs.readdir(inputDir, function(err, files) {
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252 | if (err) {
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253 | fatal('Cannot read directory ' + inputDir + '\n' + err.message);
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254 | }
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255 | files.forEach(function(file) {
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256 | var inputFile = path.join(inputDir, file);
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257 | var outputFile = path.join(outputDir, file);
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258 | fs.stat(inputFile, function(err, stat) {
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259 | if (err) {
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260 | fatal('Cannot read ' + inputFile + '\n' + err.message);
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261 | }
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262 | else if (stat.isDirectory()) {
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263 | processDirectory(inputFile, outputFile, fileExt);
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264 | }
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265 | else if (!fileExt || path.extname(file) === '.' + fileExt) {
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266 | mkdir(outputDir, function() {
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267 | processFile(inputFile, outputFile);
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268 | });
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269 | }
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270 | });
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271 | });
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272 | });
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273 | }
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274 |
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275 | function writeMinify() {
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276 | var minified;
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277 | try {
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278 | minified = minify(content, createOptions());
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279 | }
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280 | catch (e) {
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281 | fatal('Minification error:\n' + e.message);
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282 | }
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283 | (program.output ? fs.createWriteStream(program.output).on('error', function(e) {
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284 | fatal('Cannot write ' + program.output + '\n' + e.message);
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285 | }) : process.stdout).write(minified);
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286 | }
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287 |
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288 | var inputDir = program.inputDir;
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289 | var outputDir = program.outputDir;
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290 | var fileExt = program.fileExt;
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291 | if (inputDir || outputDir) {
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292 | if (!inputDir) {
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293 | fatal('The option output-dir needs to be used with the option input-dir. If you are working with a single file, use -o.');
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294 | }
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295 | else if (!outputDir) {
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296 | fatal('You need to specify where to write the output files with the option --output-dir');
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297 | }
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298 | processDirectory(inputDir, outputDir, fileExt);
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299 | }
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300 |
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301 | else if (content) {
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302 | writeMinify();
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303 | }
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304 |
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305 | else {
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306 | content = '';
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307 | process.stdin.setEncoding('utf8');
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308 | process.stdin.on('data', function(data) {
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309 | content += data;
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310 | }).on('end', writeMinify);
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311 | }
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