606 lines
23 KiB
JavaScript
Executable File
606 lines
23 KiB
JavaScript
Executable File
#! /usr/bin/env node
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// -*- js -*-
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"use strict";
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require("../tools/tty");
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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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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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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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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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// 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) {
|
|
try {
|
|
return fs.statSync(path.join(dir, name)).isFile();
|
|
} catch (ex) {
|
|
return false;
|
|
}
|
|
});
|
|
} catch (ex) {}
|
|
if (entries) {
|
|
var pattern = "^" + path.basename(glob)
|
|
.replace(/[.+^$[\]\\(){}]/g, "\\$&")
|
|
.replace(/\*/g, "[^/\\\\]*")
|
|
.replace(/\?/g, "[^/\\\\]") + "$";
|
|
var mod = process.platform === "win32" ? "i" : "";
|
|
var rx = new RegExp(pattern, mod);
|
|
var results = entries.filter(function(name) {
|
|
return rx.test(name);
|
|
}).sort().map(function(name) {
|
|
return path.join(dir, name);
|
|
});
|
|
if (results.length) {
|
|
[].push.apply(paths, results);
|
|
return paths;
|
|
}
|
|
}
|
|
}
|
|
paths.push(glob);
|
|
return paths;
|
|
}, []);
|
|
}
|
|
|
|
function read_file(path, default_value) {
|
|
try {
|
|
return fs.readFileSync(path, "utf8");
|
|
} catch (ex) {
|
|
if (ex.code == "ENOENT" && default_value != null) return default_value;
|
|
fatal(ex);
|
|
}
|
|
}
|
|
|
|
function parse_js(value, options, flag) {
|
|
if (!options || typeof options != "object") options = Object.create(null);
|
|
if (typeof value == "string") try {
|
|
UglifyJS.parse(value, {
|
|
expression: true
|
|
}).walk(new UglifyJS.TreeWalker(function(node) {
|
|
if (node instanceof UglifyJS.AST_Assign) {
|
|
var name = node.left.print_to_string();
|
|
var value = node.right;
|
|
if (flag) {
|
|
options[name] = value;
|
|
} else if (value instanceof UglifyJS.AST_Array) {
|
|
options[name] = value.elements.map(to_string);
|
|
} else {
|
|
options[name] = to_string(value);
|
|
}
|
|
return true;
|
|
}
|
|
if (node instanceof UglifyJS.AST_Symbol || node instanceof UglifyJS.AST_PropAccess) {
|
|
var name = node.print_to_string();
|
|
options[name] = true;
|
|
return true;
|
|
}
|
|
if (!(node instanceof UglifyJS.AST_Sequence)) throw node;
|
|
|
|
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");
|
|
}
|