1 | #! /usr/bin/env node
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2 | // -*- js -*-
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3 |
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4 | "use strict";
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5 |
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6 | require("../tools/exit");
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7 |
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8 | var fs = require("fs");
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9 | var info = require("../package.json");
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10 | var path = require("path");
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11 | var UglifyJS = require("../tools/node");
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12 |
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13 | var skip_keys = [ "cname", "inlined", "parent_scope", "scope", "uses_eval", "uses_with" ];
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14 | var files = {};
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15 | var options = {};
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16 | var short_forms = {
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17 | b: "beautify",
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18 | c: "compress",
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19 | d: "define",
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20 | e: "enclose",
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21 | h: "help",
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22 | m: "mangle",
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23 | o: "output",
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24 | O: "output-opts",
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25 | p: "parse",
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26 | v: "version",
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27 | V: "version",
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28 | };
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29 | var args = process.argv.slice(2);
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30 | var paths = [];
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31 | var output, nameCache;
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32 | var specified = {};
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33 | while (args.length) {
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34 | var arg = args.shift();
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35 | if (arg[0] != "-") {
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36 | paths.push(arg);
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37 | } else if (arg == "--") {
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38 | paths = paths.concat(args);
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39 | break;
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40 | } else if (arg[1] == "-") {
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41 | process_option(arg.slice(2));
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42 | } else [].forEach.call(arg.slice(1), function(letter, index, arg) {
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43 | if (!(letter in short_forms)) fatal("invalid option -" + letter);
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44 | process_option(short_forms[letter], index + 1 < arg.length);
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45 | });
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46 | }
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47 |
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48 | function process_option(name, no_value) {
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49 | specified[name] = true;
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50 | switch (name) {
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51 | case "help":
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52 | switch (read_value()) {
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53 | case "ast":
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54 | print(UglifyJS.describe_ast());
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55 | break;
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56 | case "options":
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57 | var text = [];
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58 | var toplevels = [];
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59 | var padding = "";
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60 | var defaults = UglifyJS.default_options();
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61 | for (var name in defaults) {
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62 | var option = defaults[name];
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63 | if (option && typeof option == "object") {
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64 | text.push("--" + ({
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65 | output: "beautify",
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66 | sourceMap: "source-map",
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67 | }[name] || name) + " options:");
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68 | text.push(format_object(option));
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69 | text.push("");
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70 | } else {
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71 | if (padding.length < name.length) padding = Array(name.length + 1).join(" ");
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72 | toplevels.push([ {
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73 | keep_fnames: "keep-fnames",
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74 | nameCache: "name-cache",
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75 | }[name] || name, option ]);
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76 | }
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77 | }
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78 | toplevels.forEach(function(tokens) {
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79 | text.push("--" + tokens[0] + padding.slice(tokens[0].length - 2) + tokens[1]);
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80 | });
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81 | print(text.join("\n"));
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82 | break;
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83 | default:
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84 | print([
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85 | "Usage: uglifyjs [files...] [options]",
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86 | "",
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87 | "Options:",
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88 | " -h, --help Print usage information.",
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89 | " `--help options` for details on available options.",
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90 | " -v, -V, --version Print version number.",
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91 | " -p, --parse <options> Specify parser options.",
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92 | " -c, --compress [options] Enable compressor/specify compressor options.",
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93 | " -m, --mangle [options] Mangle names/specify mangler options.",
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94 | " --mangle-props [options] Mangle properties/specify mangler options.",
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95 | " -b, --beautify [options] Beautify output/specify output options.",
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96 | " -O, --output-opts <options> Output options (beautify disabled).",
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97 | " -o, --output <file> Output file (default STDOUT).",
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98 | " --comments [filter] Preserve copyright comments in the output.",
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99 | " --config-file <file> Read minify() options from JSON file.",
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100 | " -d, --define <expr>[=value] Global definitions.",
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101 | " -e, --enclose [arg[,...][:value[,...]]] Embed everything in a big function, with configurable argument(s) & value(s).",
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102 | " --ie8 Support non-standard Internet Explorer 8.",
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103 | " --keep-fnames Do not mangle/drop function names. Useful for code relying on Function.prototype.name.",
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104 | " --name-cache <file> File to hold mangled name mappings.",
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105 | " --rename Force symbol expansion.",
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106 | " --no-rename Disable symbol expansion.",
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107 | " --self Build UglifyJS as a library (implies --wrap UglifyJS)",
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108 | " --source-map [options] Enable source map/specify source map options.",
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109 | " --timings Display operations run time on STDERR.",
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110 | " --toplevel Compress and/or mangle variables in toplevel scope.",
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111 | " --validate Perform validation during AST manipulations.",
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112 | " --verbose Print diagnostic messages.",
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113 | " --warn Print warning messages.",
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114 | " --wrap <name> Embed everything as a function with “exports” corresponding to “name” globally.",
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115 | " --reduce-test Reduce a standalone test case (assumes cloned repository).",
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116 | ].join("\n"));
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117 | }
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118 | process.exit();
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119 | case "version":
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120 | print(info.name + " " + info.version);
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121 | process.exit();
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122 | case "config-file":
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123 | var config = JSON.parse(read_file(read_value(true)));
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124 | if (config.mangle && config.mangle.properties && config.mangle.properties.regex) {
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125 | config.mangle.properties.regex = UglifyJS.parse(config.mangle.properties.regex, {
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126 | expression: true,
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127 | }).value;
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128 | }
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129 | for (var key in config) if (!(key in options)) options[key] = config[key];
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130 | break;
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131 | case "compress":
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132 | case "mangle":
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133 | options[name] = parse_js(read_value(), options[name]);
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134 | break;
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135 | case "source-map":
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136 | options.sourceMap = parse_js(read_value(), options.sourceMap);
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137 | break;
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138 | case "enclose":
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139 | options[name] = read_value();
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140 | break;
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141 | case "ie8":
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142 | case "timings":
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143 | case "toplevel":
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144 | case "validate":
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145 | options[name] = true;
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146 | break;
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147 | case "keep-fnames":
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148 | options.keep_fnames = true;
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149 | break;
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150 | case "wrap":
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151 | options[name] = read_value(true);
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152 | break;
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153 | case "verbose":
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154 | options.warnings = "verbose";
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155 | break;
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156 | case "warn":
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157 | if (!options.warnings) options.warnings = true;
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158 | break;
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159 | case "beautify":
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160 | options.output = parse_js(read_value(), options.output);
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161 | if (!("beautify" in options.output)) options.output.beautify = true;
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162 | break;
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163 | case "output-opts":
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164 | options.output = parse_js(read_value(true), options.output);
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165 | break;
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166 | case "comments":
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167 | if (typeof options.output != "object") options.output = {};
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168 | options.output.comments = read_value();
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169 | if (options.output.comments === true) options.output.comments = "some";
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170 | break;
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171 | case "define":
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172 | if (typeof options.compress != "object") options.compress = {};
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173 | options.compress.global_defs = parse_js(read_value(true), options.compress.global_defs, "define");
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174 | break;
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175 | case "mangle-props":
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176 | if (typeof options.mangle != "object") options.mangle = {};
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177 | options.mangle.properties = parse_js(read_value(), options.mangle.properties);
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178 | break;
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179 | case "name-cache":
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180 | nameCache = read_value(true);
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181 | options.nameCache = JSON.parse(read_file(nameCache, "{}"));
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182 | break;
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183 | case "output":
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184 | output = read_value(true);
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185 | break;
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186 | case "parse":
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187 | options.parse = parse_js(read_value(true), options.parse);
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188 | break;
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189 | case "rename":
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190 | options.rename = true;
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191 | break;
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192 | case "no-rename":
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193 | options.rename = false;
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194 | break;
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195 | case "reduce-test":
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196 | case "self":
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197 | break;
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198 | default:
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199 | fatal("invalid option --" + name);
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200 | }
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201 |
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202 | function read_value(required) {
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203 | if (no_value || !args.length || args[0][0] == "-") {
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204 | if (required) fatal("missing option argument for --" + name);
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205 | return true;
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206 | }
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207 | return args.shift();
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208 | }
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209 | }
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210 | if (!output && options.sourceMap && options.sourceMap.url != "inline") fatal("cannot write source map to STDOUT");
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211 | if (specified["beautify"] && specified["output-opts"]) fatal("--beautify cannot be used with --output-opts");
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212 | [ "compress", "mangle" ].forEach(function(name) {
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213 | if (!(name in options)) options[name] = false;
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214 | });
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215 | if (options.mangle && options.mangle.properties) {
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216 | if (options.mangle.properties.domprops) {
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217 | delete options.mangle.properties.domprops;
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218 | } else {
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219 | if (typeof options.mangle.properties != "object") options.mangle.properties = {};
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220 | if (!Array.isArray(options.mangle.properties.reserved)) options.mangle.properties.reserved = [];
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221 | require("../tools/domprops").forEach(function(name) {
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222 | UglifyJS.push_uniq(options.mangle.properties.reserved, name);
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223 | });
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224 | }
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225 | }
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226 | if (output == "ast") options.output = {
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227 | ast: true,
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228 | code: false,
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229 | };
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230 | if (options.parse && (options.parse.acorn || options.parse.spidermonkey)
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231 | && options.sourceMap && options.sourceMap.content == "inline") {
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232 | fatal("inline source map only works with built-in parser");
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233 | }
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234 | if (options.warnings) {
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235 | UglifyJS.AST_Node.log_function(print_error, options.warnings == "verbose");
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236 | delete options.warnings;
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237 | }
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238 | var convert_path = function(name) {
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239 | return name;
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240 | };
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241 | if (typeof options.sourceMap == "object" && "base" in options.sourceMap) {
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242 | convert_path = function() {
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243 | var base = options.sourceMap.base;
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244 | delete options.sourceMap.base;
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245 | return function(name) {
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246 | return path.relative(base, name);
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247 | };
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248 | }();
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249 | }
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250 | if (specified["self"]) {
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251 | if (paths.length) UglifyJS.AST_Node.warn("Ignoring input files since --self was passed");
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252 | if (!options.wrap) options.wrap = "UglifyJS";
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253 | paths = UglifyJS.FILES;
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254 | }
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255 | if (paths.length) {
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256 | simple_glob(paths).forEach(function(name) {
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257 | files[convert_path(name)] = read_file(name);
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258 | });
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259 | run();
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260 | } else {
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261 | var chunks = [];
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262 | process.stdin.setEncoding("utf8");
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263 | process.stdin.on("data", function(chunk) {
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264 | chunks.push(chunk);
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265 | }).on("end", function() {
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266 | files = [ chunks.join("") ];
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267 | run();
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268 | });
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269 | process.stdin.resume();
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270 | }
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271 |
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272 | function convert_ast(fn) {
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273 | return UglifyJS.AST_Node.from_mozilla_ast(Object.keys(files).reduce(fn, null));
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274 | }
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275 |
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276 | function run() {
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277 | var content = options.sourceMap && options.sourceMap.content;
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278 | if (content && content != "inline") {
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279 | UglifyJS.AST_Node.info("Using input source map: " + content);
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280 | options.sourceMap.content = read_file(content, content);
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281 | }
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282 | try {
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283 | if (options.parse) {
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284 | if (options.parse.acorn) {
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285 | files = convert_ast(function(toplevel, name) {
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286 | return require("acorn").parse(files[name], {
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287 | locations: true,
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288 | program: toplevel,
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289 | sourceFile: name
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290 | });
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291 | });
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292 | } else if (options.parse.spidermonkey) {
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293 | files = convert_ast(function(toplevel, name) {
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294 | var obj = JSON.parse(files[name]);
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295 | if (!toplevel) return obj;
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296 | toplevel.body = toplevel.body.concat(obj.body);
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297 | return toplevel;
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298 | });
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299 | }
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300 | }
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301 | } catch (ex) {
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302 | fatal(ex);
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303 | }
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304 | var result;
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305 | if (specified["reduce-test"]) {
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306 | // load on demand - assumes cloned repository
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307 | var reduce_test = require("../test/reduce");
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308 | if (Object.keys(files).length != 1) fatal("can only test on a single file");
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309 | result = reduce_test(files[Object.keys(files)[0]], options, {
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310 | log: print_error,
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311 | verbose: true,
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312 | });
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313 | } else {
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314 | result = UglifyJS.minify(files, options);
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315 | }
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316 | if (result.error) {
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317 | var ex = result.error;
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318 | if (ex.name == "SyntaxError") {
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319 | print_error("Parse error at " + ex.filename + ":" + ex.line + "," + ex.col);
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320 | var file = files[ex.filename];
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321 | if (file) {
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322 | var col = ex.col;
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323 | var lines = file.split(/\r?\n/);
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324 | var line = lines[ex.line - 1];
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325 | if (!line && !col) {
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326 | line = lines[ex.line - 2];
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327 | col = line.length;
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328 | }
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329 | if (line) {
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330 | var limit = 70;
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331 | if (col > limit) {
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332 | line = line.slice(col - limit);
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333 | col = limit;
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334 | }
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335 | print_error(line.slice(0, 80));
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336 | print_error(line.slice(0, col).replace(/\S/g, " ") + "^");
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337 | }
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338 | }
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339 | } else if (ex.defs) {
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340 | print_error("Supported options:");
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341 | print_error(format_object(ex.defs));
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342 | }
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343 | fatal(ex);
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344 | } else if (output == "ast") {
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345 | if (!options.compress && !options.mangle) result.ast.figure_out_scope({});
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346 | print(JSON.stringify(result.ast, function(key, value) {
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347 | if (value) switch (key) {
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348 | case "thedef":
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349 | return symdef(value);
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350 | case "enclosed":
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351 | return value.length ? value.map(symdef) : undefined;
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352 | case "variables":
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353 | case "functions":
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354 | case "globals":
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355 | return value.size() ? value.map(symdef) : undefined;
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356 | }
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357 | if (skip_key(key)) return;
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358 | if (value instanceof UglifyJS.AST_Token) return;
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359 | if (value instanceof UglifyJS.Dictionary) return;
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360 | if (value instanceof UglifyJS.AST_Node) {
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361 | var result = {
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362 | _class: "AST_" + value.TYPE
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363 | };
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364 | value.CTOR.PROPS.forEach(function(prop) {
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365 | result[prop] = value[prop];
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366 | });
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367 | return result;
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368 | }
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369 | return value;
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370 | }, 2));
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371 | } else if (output == "spidermonkey") {
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372 | print(JSON.stringify(UglifyJS.minify(result.code, {
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373 | compress: false,
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374 | mangle: false,
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375 | output: {
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376 | ast: true,
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377 | code: false
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378 | },
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379 | }).ast.to_mozilla_ast(), null, 2));
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380 | } else if (output) {
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381 | fs.writeFileSync(output, result.code);
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382 | if (result.map) fs.writeFileSync(output + ".map", result.map);
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383 | } else {
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384 | print(result.code);
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385 | }
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386 | if (nameCache) fs.writeFileSync(nameCache, JSON.stringify(options.nameCache));
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387 | if (result.timings) for (var phase in result.timings) {
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388 | print_error("- " + phase + ": " + result.timings[phase].toFixed(3) + "s");
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389 | }
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390 | }
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391 |
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392 | function fatal(message) {
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393 | if (message instanceof Error) {
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394 | message = message.stack.replace(/^\S*?Error:/, "ERROR:")
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395 | } else {
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396 | message = "ERROR: " + message;
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397 | }
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398 | print_error(message);
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399 | process.exit(1);
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400 | }
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401 |
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402 | // A file glob function that only supports "*" and "?" wildcards in the basename.
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403 | // Example: "foo/bar/*baz??.*.js"
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404 | // Argument `glob` may be a string or an array of strings.
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405 | // Returns an array of strings. Garbage in, garbage out.
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406 | function simple_glob(glob) {
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407 | if (Array.isArray(glob)) {
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408 | return [].concat.apply([], glob.map(simple_glob));
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409 | }
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410 | if (glob.match(/\*|\?/)) {
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411 | var dir = path.dirname(glob);
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412 | try {
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413 | var entries = fs.readdirSync(dir);
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414 | } catch (ex) {}
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415 | if (entries) {
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416 | var pattern = "^" + path.basename(glob)
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417 | .replace(/[.+^$[\]\\(){}]/g, "\\$&")
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418 | .replace(/\*/g, "[^/\\\\]*")
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419 | .replace(/\?/g, "[^/\\\\]") + "$";
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420 | var mod = process.platform === "win32" ? "i" : "";
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421 | var rx = new RegExp(pattern, mod);
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422 | var results = entries.sort().filter(function(name) {
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423 | return rx.test(name);
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424 | }).map(function(name) {
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425 | return path.join(dir, name);
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426 | });
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427 | if (results.length) return results;
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428 | }
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429 | }
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430 | return [ glob ];
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431 | }
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432 |
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433 | function read_file(path, default_value) {
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434 | try {
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435 | return fs.readFileSync(path, "utf8");
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436 | } catch (ex) {
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437 | if (ex.code == "ENOENT" && default_value != null) return default_value;
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438 | fatal(ex);
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439 | }
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440 | }
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441 |
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442 | function parse_js(value, options, flag) {
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443 | if (!options || typeof options != "object") options = {};
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444 | if (typeof value == "string") try {
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445 | UglifyJS.parse(value, {
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446 | expression: true
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447 | }).walk(new UglifyJS.TreeWalker(function(node) {
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448 | if (node instanceof UglifyJS.AST_Assign) {
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449 | var name = node.left.print_to_string();
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450 | var value = node.right;
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451 | if (flag) {
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452 | options[name] = value;
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453 | } else if (value instanceof UglifyJS.AST_Array) {
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454 | options[name] = value.elements.map(to_string);
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455 | } else {
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456 | options[name] = to_string(value);
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457 | }
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458 | return true;
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459 | }
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460 | if (node instanceof UglifyJS.AST_Symbol || node instanceof UglifyJS.AST_PropAccess) {
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461 | var name = node.print_to_string();
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462 | options[name] = true;
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463 | return true;
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464 | }
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465 | if (!(node instanceof UglifyJS.AST_Sequence)) throw node;
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466 |
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467 | function to_string(value) {
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468 | return value instanceof UglifyJS.AST_Constant ? value.value : value.print_to_string({
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469 | quote_keys: true
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470 | });
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471 | }
|
472 | }));
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473 | } catch (ex) {
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474 | if (flag) {
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475 | fatal("cannot parse arguments for '" + flag + "': " + value);
|
476 | } else {
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477 | options[value] = null;
|
478 | }
|
479 | }
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480 | return options;
|
481 | }
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482 |
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483 | function skip_key(key) {
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484 | return skip_keys.indexOf(key) >= 0;
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485 | }
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486 |
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487 | function symdef(def) {
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488 | var ret = (1e6 + def.id) + " " + def.name;
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489 | if (def.mangled_name) ret += " " + def.mangled_name;
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490 | return ret;
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491 | }
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492 |
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493 | function format_object(obj) {
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494 | var lines = [];
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495 | var padding = "";
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496 | Object.keys(obj).map(function(name) {
|
497 | if (padding.length < name.length) padding = Array(name.length + 1).join(" ");
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498 | return [ name, JSON.stringify(obj[name]) ];
|
499 | }).forEach(function(tokens) {
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500 | lines.push(" " + tokens[0] + padding.slice(tokens[0].length - 2) + tokens[1]);
|
501 | });
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502 | return lines.join("\n");
|
503 | }
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504 |
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505 | function print_error(msg) {
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506 | process.stderr.write(msg);
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507 | process.stderr.write("\n");
|
508 | }
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509 |
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510 | function print(txt) {
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511 | process.stdout.write(txt);
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512 | process.stdout.write("\n");
|
513 | }
|