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605 lines
23 KiB
605 lines
23 KiB
#! /usr/bin/env node |
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// -*- js -*- |
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"use strict"; |
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|
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require("../tools/tty"); |
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|
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var fs = require("fs"); |
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var info = require("../package.json"); |
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var path = require("path"); |
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var UglifyJS = require("../tools/node"); |
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|
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var skip_keys = [ "cname", "fixed", "in_arg", "inlined", "length_read", "parent_scope", "redef", "scope", "unused" ]; |
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var truthy_keys = [ "optional", "pure", "terminal", "uses_arguments", "uses_eval", "uses_with" ]; |
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|
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var files = {}; |
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var options = {}; |
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var short_forms = { |
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b: "beautify", |
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c: "compress", |
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d: "define", |
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e: "enclose", |
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h: "help", |
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m: "mangle", |
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o: "output", |
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O: "output-opts", |
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p: "parse", |
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v: "version", |
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V: "version", |
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}; |
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var args = process.argv.slice(2); |
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var paths = []; |
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var output, nameCache; |
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var specified = {}; |
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while (args.length) { |
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var arg = args.shift(); |
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if (arg[0] != "-") { |
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paths.push(arg); |
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} else if (arg == "--") { |
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paths = paths.concat(args); |
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break; |
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} else if (arg[1] == "-") { |
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process_option(arg.slice(2)); |
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} else [].forEach.call(arg.slice(1), function(letter, index, arg) { |
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if (!(letter in short_forms)) fatal("invalid option -" + letter); |
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process_option(short_forms[letter], index + 1 < arg.length); |
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}); |
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} |
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function process_option(name, no_value) { |
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specified[name] = true; |
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switch (name) { |
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case "help": |
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switch (read_value()) { |
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case "ast": |
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print(UglifyJS.describe_ast()); |
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break; |
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case "options": |
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var text = []; |
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var toplevels = []; |
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var padding = ""; |
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var defaults = UglifyJS.default_options(); |
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for (var name in defaults) { |
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var option = defaults[name]; |
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if (option && typeof option == "object") { |
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text.push("--" + ({ |
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output: "beautify", |
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sourceMap: "source-map", |
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}[name] || name) + " options:"); |
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text.push(format_object(option)); |
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text.push(""); |
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} else { |
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if (padding.length < name.length) padding = Array(name.length + 1).join(" "); |
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toplevels.push([ { |
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keep_fargs: "keep-fargs", |
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keep_fnames: "keep-fnames", |
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nameCache: "name-cache", |
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}[name] || name, option ]); |
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} |
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} |
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toplevels.forEach(function(tokens) { |
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text.push("--" + tokens[0] + padding.slice(tokens[0].length - 2) + tokens[1]); |
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}); |
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print(text.join("\n")); |
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break; |
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default: |
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print([ |
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"Usage: uglifyjs [files...] [options]", |
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"", |
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"Options:", |
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" -h, --help Print usage information.", |
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" `--help options` for details on available options.", |
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" -v, -V, --version Print version number.", |
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" -p, --parse <options> Specify parser options.", |
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" -c, --compress [options] Enable compressor/specify compressor options.", |
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" -m, --mangle [options] Mangle names/specify mangler options.", |
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" --mangle-props [options] Mangle properties/specify mangler options.", |
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" -b, --beautify [options] Beautify output/specify output options.", |
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" -O, --output-opts <options> Output options (beautify disabled).", |
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" -o, --output <file> Output file (default STDOUT).", |
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" --annotations Process and preserve comment annotations.", |
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" --no-annotations Ignore and discard comment annotations.", |
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" --comments [filter] Preserve copyright comments in the output.", |
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" --config-file <file> Read minify() options from JSON file.", |
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" -d, --define <expr>[=value] Global definitions.", |
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" -e, --enclose [arg[,...][:value[,...]]] Embed everything in a big function, with configurable argument(s) & value(s).", |
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" --expression Parse a single expression, rather than a program.", |
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" --ie Support non-standard Internet Explorer.", |
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" --keep-fargs Do not mangle/drop function arguments.", |
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" --keep-fnames Do not mangle/drop function names. Useful for code relying on Function.prototype.name.", |
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" --module Process input as ES module (implies --toplevel)", |
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" --name-cache <file> File to hold mangled name mappings.", |
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" --rename Force symbol expansion.", |
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" --no-rename Disable symbol expansion.", |
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" --self Build UglifyJS as a library (implies --wrap UglifyJS)", |
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" --source-map [options] Enable source map/specify source map options.", |
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" --timings Display operations run time on STDERR.", |
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" --toplevel Compress and/or mangle variables in toplevel scope.", |
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" --v8 Support non-standard Chrome & Node.js.", |
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" --validate Perform validation during AST manipulations.", |
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" --verbose Print diagnostic messages.", |
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" --warn Print warning messages.", |
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" --webkit Support non-standard Safari/Webkit.", |
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" --wrap <name> Embed everything as a function with “exports” corresponding to “name” globally.", |
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"", |
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"(internal debug use only)", |
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" --in-situ Warning: replaces original source files with minified output.", |
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" --reduce-test Reduce a standalone test case (assumes cloned repository).", |
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].join("\n")); |
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} |
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process.exit(); |
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case "version": |
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print(info.name + " " + info.version); |
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process.exit(); |
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case "config-file": |
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var config = JSON.parse(read_file(read_value(true))); |
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if (config.mangle && config.mangle.properties && config.mangle.properties.regex) { |
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config.mangle.properties.regex = UglifyJS.parse(config.mangle.properties.regex, { |
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expression: true, |
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}).value; |
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} |
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for (var key in config) if (!(key in options)) options[key] = config[key]; |
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break; |
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case "compress": |
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case "mangle": |
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options[name] = parse_js(read_value(), options[name]); |
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break; |
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case "source-map": |
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options.sourceMap = parse_js(read_value(), options.sourceMap); |
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break; |
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case "enclose": |
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options[name] = read_value(); |
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break; |
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case "annotations": |
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case "expression": |
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case "ie": |
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case "ie8": |
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case "module": |
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case "timings": |
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case "toplevel": |
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case "v8": |
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case "validate": |
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case "webkit": |
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options[name] = true; |
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break; |
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case "no-annotations": |
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options.annotations = false; |
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break; |
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case "keep-fargs": |
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options.keep_fargs = true; |
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break; |
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case "keep-fnames": |
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options.keep_fnames = true; |
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break; |
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case "wrap": |
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options[name] = read_value(true); |
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break; |
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case "verbose": |
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options.warnings = "verbose"; |
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break; |
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case "warn": |
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if (!options.warnings) options.warnings = true; |
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break; |
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case "beautify": |
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options.output = parse_js(read_value(), options.output); |
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if (!("beautify" in options.output)) options.output.beautify = true; |
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break; |
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case "output-opts": |
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options.output = parse_js(read_value(true), options.output); |
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break; |
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case "comments": |
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if (typeof options.output != "object") options.output = {}; |
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options.output.comments = read_value(); |
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if (options.output.comments === true) options.output.comments = "some"; |
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break; |
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case "define": |
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if (typeof options.compress != "object") options.compress = {}; |
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options.compress.global_defs = parse_js(read_value(true), options.compress.global_defs, "define"); |
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break; |
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case "mangle-props": |
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if (typeof options.mangle != "object") options.mangle = {}; |
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options.mangle.properties = parse_js(read_value(), options.mangle.properties); |
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break; |
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case "name-cache": |
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nameCache = read_value(true); |
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options.nameCache = JSON.parse(read_file(nameCache, "{}")); |
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break; |
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case "output": |
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output = read_value(true); |
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break; |
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case "parse": |
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options.parse = parse_js(read_value(true), options.parse); |
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break; |
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case "rename": |
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options.rename = true; |
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break; |
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case "no-rename": |
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options.rename = false; |
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break; |
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case "in-situ": |
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case "reduce-test": |
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case "self": |
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break; |
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default: |
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fatal("invalid option --" + name); |
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} |
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function read_value(required) { |
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if (no_value || !args.length || args[0][0] == "-") { |
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if (required) fatal("missing option argument for --" + name); |
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return true; |
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} |
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return args.shift(); |
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} |
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} |
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if (!output && options.sourceMap && options.sourceMap.url != "inline") fatal("cannot write source map to STDOUT"); |
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if (specified["beautify"] && specified["output-opts"]) fatal("--beautify cannot be used with --output-opts"); |
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[ "compress", "mangle" ].forEach(function(name) { |
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if (!(name in options)) options[name] = false; |
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}); |
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if (/^ast|spidermonkey$/.test(output)) { |
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if (typeof options.output != "object") options.output = {}; |
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options.output.ast = true; |
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options.output.code = false; |
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} |
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if (options.parse && (options.parse.acorn || options.parse.spidermonkey) |
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&& options.sourceMap && options.sourceMap.content == "inline") { |
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fatal("inline source map only works with built-in parser"); |
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} |
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if (options.warnings) { |
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UglifyJS.AST_Node.log_function(print_error, options.warnings == "verbose"); |
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delete options.warnings; |
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} |
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var convert_path = function(name) { |
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return name; |
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}; |
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if (typeof options.sourceMap == "object" && "base" in options.sourceMap) { |
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convert_path = function() { |
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var base = options.sourceMap.base; |
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delete options.sourceMap.base; |
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return function(name) { |
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return path.relative(base, name); |
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}; |
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}(); |
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} |
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if (specified["self"]) { |
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if (paths.length) UglifyJS.AST_Node.warn("Ignoring input files since --self was passed"); |
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if (!options.wrap) options.wrap = "UglifyJS"; |
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paths = UglifyJS.FILES; |
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} else if (paths.length) { |
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paths = simple_glob(paths); |
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} |
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if (specified["in-situ"]) { |
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if (output && output != "spidermonkey" || specified["reduce-test"] || specified["self"]) { |
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fatal("incompatible options specified"); |
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} |
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paths.forEach(function(name) { |
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print(name); |
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if (/^ast|spidermonkey$/.test(name)) fatal("invalid file name specified"); |
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files = {}; |
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files[convert_path(name)] = read_file(name); |
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output = name; |
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run(); |
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}); |
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} else if (paths.length) { |
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paths.forEach(function(name) { |
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files[convert_path(name)] = read_file(name); |
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}); |
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run(); |
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} else { |
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var timerId = process.stdin.isTTY && process.argv.length < 3 && setTimeout(function() { |
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print_error("Waiting for input... (use `--help` to print usage information)"); |
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}, 1500); |
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var chunks = []; |
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process.stdin.setEncoding("utf8"); |
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process.stdin.once("data", function() { |
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clearTimeout(timerId); |
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}).on("data", function(chunk) { |
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chunks.push(chunk); |
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}).on("end", function() { |
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files = { STDIN: chunks.join("") }; |
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run(); |
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}); |
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process.stdin.resume(); |
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} |
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function convert_ast(fn) { |
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return UglifyJS.AST_Node.from_mozilla_ast(Object.keys(files).reduce(fn, null)); |
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} |
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function run() { |
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var content = options.sourceMap && options.sourceMap.content; |
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if (content && content != "inline") { |
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UglifyJS.AST_Node.info("Using input source map: {content}", { |
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content : content, |
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}); |
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options.sourceMap.content = read_file(content, content); |
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} |
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try { |
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if (options.parse) { |
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if (options.parse.acorn) { |
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var annotations = Object.create(null); |
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files = convert_ast(function(toplevel, name) { |
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var content = files[name]; |
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var list = annotations[name] = []; |
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var prev = -1; |
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return require("acorn").parse(content, { |
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allowHashBang: true, |
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ecmaVersion: "latest", |
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locations: true, |
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onComment: function(block, text, start, end) { |
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var match = /[@#]__PURE__/.exec(text); |
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if (!match) { |
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if (start != prev) return; |
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match = [ list[prev] ]; |
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} |
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while (/\s/.test(content[end])) end++; |
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list[end] = match[0]; |
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prev = end; |
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}, |
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preserveParens: true, |
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program: toplevel, |
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sourceFile: name, |
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sourceType: "module", |
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}); |
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}); |
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files.walk(new UglifyJS.TreeWalker(function(node) { |
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if (!(node instanceof UglifyJS.AST_Call)) return; |
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var list = annotations[node.start.file]; |
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var pure = list[node.start.pos]; |
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if (!pure) { |
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var tokens = node.start.parens; |
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if (tokens) for (var i = 0; !pure && i < tokens.length; i++) { |
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pure = list[tokens[i].pos]; |
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} |
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} |
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if (pure) node.pure = pure; |
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})); |
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} else if (options.parse.spidermonkey) { |
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files = convert_ast(function(toplevel, name) { |
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var obj = JSON.parse(files[name]); |
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if (!toplevel) return obj; |
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toplevel.body = toplevel.body.concat(obj.body); |
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return toplevel; |
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}); |
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} |
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} |
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} catch (ex) { |
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fatal(ex); |
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} |
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var result; |
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if (specified["reduce-test"]) { |
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// load on demand - assumes cloned repository |
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var reduce_test = require("../test/reduce"); |
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if (Object.keys(files).length != 1) fatal("can only test on a single file"); |
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result = reduce_test(files[Object.keys(files)[0]], options, { |
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log: print_error, |
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verbose: true, |
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}); |
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} else { |
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result = UglifyJS.minify(files, options); |
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} |
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if (result.error) { |
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var ex = result.error; |
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if (ex.name == "SyntaxError") { |
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print_error("Parse error at " + ex.filename + ":" + ex.line + "," + ex.col); |
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var file = files[ex.filename]; |
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if (file) { |
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var col = ex.col; |
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var lines = file.split(/\r?\n/); |
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var line = lines[ex.line - 1]; |
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if (!line && !col) { |
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line = lines[ex.line - 2]; |
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col = line.length; |
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} |
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if (line) { |
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var limit = 70; |
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if (col > limit) { |
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line = line.slice(col - limit); |
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col = limit; |
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} |
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print_error(line.slice(0, 80)); |
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print_error(line.slice(0, col).replace(/\S/g, " ") + "^"); |
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} |
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} |
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} else if (ex.defs) { |
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print_error("Supported options:"); |
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print_error(format_object(ex.defs)); |
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} |
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fatal(ex); |
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} else if (output == "ast") { |
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if (!options.compress && !options.mangle) { |
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var toplevel = result.ast; |
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if (!(toplevel instanceof UglifyJS.AST_Toplevel)) { |
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if (!(toplevel instanceof UglifyJS.AST_Statement)) toplevel = new UglifyJS.AST_SimpleStatement({ |
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body: toplevel, |
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}); |
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toplevel = new UglifyJS.AST_Toplevel({ |
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body: [ toplevel ], |
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}); |
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} |
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toplevel.figure_out_scope({}); |
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} |
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print(JSON.stringify(result.ast, function(key, value) { |
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if (value) switch (key) { |
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case "enclosed": |
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return value.length ? value.map(symdef) : undefined; |
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case "functions": |
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case "globals": |
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case "variables": |
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return value.size() ? value.map(symdef) : undefined; |
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case "thedef": |
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return symdef(value); |
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} |
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if (skip_property(key, value)) return; |
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if (value instanceof UglifyJS.AST_Token) return; |
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if (value instanceof UglifyJS.Dictionary) return; |
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if (value instanceof UglifyJS.AST_Node) { |
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var result = { |
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_class: "AST_" + value.TYPE |
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}; |
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value.CTOR.PROPS.forEach(function(prop) { |
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result[prop] = value[prop]; |
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}); |
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return result; |
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} |
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return value; |
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}, 2)); |
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} else if (output == "spidermonkey") { |
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print(JSON.stringify(result.ast.to_mozilla_ast(), null, 2)); |
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} else if (output) { |
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var code; |
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if (result.ast) { |
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var opts = {}; |
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for (var name in options.output) { |
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if (!/^ast|code$/.test(name)) opts[name] = options.output[name]; |
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} |
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code = UglifyJS.AST_Node.from_mozilla_ast(result.ast.to_mozilla_ast()).print_to_string(opts); |
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} else { |
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code = result.code; |
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} |
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fs.writeFileSync(output, code); |
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if (result.map) fs.writeFileSync(output + ".map", result.map); |
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} else { |
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print(result.code); |
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} |
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if (nameCache) fs.writeFileSync(nameCache, JSON.stringify(options.nameCache)); |
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if (result.timings) for (var phase in result.timings) { |
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print_error("- " + phase + ": " + result.timings[phase].toFixed(3) + "s"); |
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} |
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} |
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|
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function fatal(message) { |
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if (message instanceof Error) { |
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message = message.stack.replace(/^\S*?Error:/, "ERROR:") |
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} else { |
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message = "ERROR: " + message; |
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} |
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print_error(message); |
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process.exit(1); |
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} |
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|
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// A file glob function that only supports "*" and "?" wildcards in the basename. |
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// Example: "foo/bar/*baz??.*.js" |
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// Argument `paths` must be an array of strings. |
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// Returns an array of strings. Garbage in, garbage out. |
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function simple_glob(paths) { |
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return paths.reduce(function(paths, glob) { |
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if (/\*|\?/.test(glob)) { |
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var dir = path.dirname(glob); |
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try { |
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var entries = fs.readdirSync(dir).filter(function(name) { |
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try { |
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return fs.statSync(path.join(dir, name)).isFile(); |
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} catch (ex) { |
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return false; |
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} |
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}); |
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} catch (ex) {} |
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if (entries) { |
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var pattern = "^" + path.basename(glob) |
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.replace(/[.+^$[\]\\(){}]/g, "\\$&") |
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.replace(/\*/g, "[^/\\\\]*") |
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.replace(/\?/g, "[^/\\\\]") + "$"; |
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var mod = process.platform === "win32" ? "i" : ""; |
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var rx = new RegExp(pattern, mod); |
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var results = entries.filter(function(name) { |
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return rx.test(name); |
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}).sort().map(function(name) { |
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return path.join(dir, name); |
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}); |
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if (results.length) { |
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[].push.apply(paths, results); |
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return paths; |
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} |
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} |
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} |
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paths.push(glob); |
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return paths; |
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}, []); |
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} |
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|
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function read_file(path, default_value) { |
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try { |
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return fs.readFileSync(path, "utf8"); |
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} catch (ex) { |
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if (ex.code == "ENOENT" && default_value != null) return default_value; |
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fatal(ex); |
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} |
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} |
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|
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function parse_js(value, options, flag) { |
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if (!options || typeof options != "object") options = Object.create(null); |
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if (typeof value == "string") try { |
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UglifyJS.parse(value, { |
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expression: true |
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}).walk(new UglifyJS.TreeWalker(function(node) { |
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if (node instanceof UglifyJS.AST_Assign) { |
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var name = node.left.print_to_string(); |
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var value = node.right; |
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if (flag) { |
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options[name] = value; |
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} else if (value instanceof UglifyJS.AST_Array) { |
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options[name] = value.elements.map(to_string); |
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} else { |
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options[name] = to_string(value); |
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} |
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return true; |
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} |
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if (node instanceof UglifyJS.AST_Symbol || node instanceof UglifyJS.AST_PropAccess) { |
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var name = node.print_to_string(); |
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options[name] = true; |
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return true; |
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} |
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if (!(node instanceof UglifyJS.AST_Sequence)) throw node; |
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|
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function to_string(value) { |
|
return value instanceof UglifyJS.AST_Constant ? value.value : value.print_to_string({ |
|
quote_keys: true |
|
}); |
|
} |
|
})); |
|
} catch (ex) { |
|
if (flag) { |
|
fatal("cannot parse arguments for '" + flag + "': " + value); |
|
} else { |
|
options[value] = null; |
|
} |
|
} |
|
return options; |
|
} |
|
|
|
function skip_property(key, value) { |
|
return skip_keys.indexOf(key) >= 0 |
|
// only skip truthy_keys if their value is falsy |
|
|| truthy_keys.indexOf(key) >= 0 && !value; |
|
} |
|
|
|
function symdef(def) { |
|
var ret = (1e6 + def.id) + " " + def.name; |
|
if (def.mangled_name) ret += " " + def.mangled_name; |
|
return ret; |
|
} |
|
|
|
function format_object(obj) { |
|
var lines = []; |
|
var padding = ""; |
|
Object.keys(obj).map(function(name) { |
|
if (padding.length < name.length) padding = Array(name.length + 1).join(" "); |
|
return [ name, JSON.stringify(obj[name]) ]; |
|
}).forEach(function(tokens) { |
|
lines.push(" " + tokens[0] + padding.slice(tokens[0].length - 2) + tokens[1]); |
|
}); |
|
return lines.join("\n"); |
|
} |
|
|
|
function print_error(msg) { |
|
process.stderr.write(msg); |
|
process.stderr.write("\n"); |
|
} |
|
|
|
function print(txt) { |
|
process.stdout.write(txt); |
|
process.stdout.write("\n"); |
|
}
|
|
|