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- #! /usr/bin/env node
- // -*- js -*-
-
- "use strict";
-
- // workaround for tty output truncation upon process.exit()
- [process.stdout, process.stderr].forEach(function(stream){
- if (stream._handle && stream._handle.setBlocking)
- stream._handle.setBlocking(true);
- });
-
- var fs = require("fs");
- var info = require("../package.json");
- var path = require("path");
- var program = require("commander");
- var UglifyJS = require("../tools/node");
-
- var skip_keys = [ "cname", "enclosed", "inlined", "parent_scope", "scope", "thedef", "uses_eval", "uses_with" ];
- var files = {};
- var options = {
- compress: false,
- mangle: false
- };
- program.version(info.name + " " + info.version);
- program.parseArgv = program.parse;
- program.parse = undefined;
- if (process.argv.indexOf("ast") >= 0) program.helpInformation = UglifyJS.describe_ast;
- else if (process.argv.indexOf("options") >= 0) program.helpInformation = function() {
- var text = [];
- var options = UglifyJS.default_options();
- for (var option in options) {
- text.push("--" + (option == "output" ? "beautify" : option == "sourceMap" ? "source-map" : option) + " options:");
- text.push(format_object(options[option]));
- text.push("");
- }
- return text.join("\n");
- };
- program.option("-p, --parse <options>", "Specify parser options.", parse_js());
- program.option("-c, --compress [options]", "Enable compressor/specify compressor options.", parse_js());
- program.option("-m, --mangle [options]", "Mangle names/specify mangler options.", parse_js());
- program.option("--mangle-props [options]", "Mangle properties/specify mangler options.", parse_js());
- program.option("-b, --beautify [options]", "Beautify output/specify output options.", parse_js());
- program.option("-o, --output <file>", "Output file (default STDOUT).");
- program.option("--comments [filter]", "Preserve copyright comments in the output.");
- program.option("--config-file <file>", "Read minify() options from JSON file.");
- program.option("-d, --define <expr>[=value]", "Global definitions.", parse_js("define"));
- program.option("--ecma <version>", "Specify ECMAScript release: 5, 6, 7 or 8.");
- program.option("--ie8", "Support non-standard Internet Explorer 8.");
- program.option("--keep-classnames", "Do not mangle/drop class names.");
- program.option("--keep-fnames", "Do not mangle/drop function names. Useful for code relying on Function.prototype.name.");
- program.option("--name-cache <file>", "File to hold mangled name mappings.");
- program.option("--no-rename", "Disable symbol expansion.");
- program.option("--safari10", "Support non-standard Safari 10.");
- program.option("--self", "Build UglifyJS as a library (implies --wrap UglifyJS)");
- program.option("--source-map [options]", "Enable source map/specify source map options.", parse_source_map());
- program.option("--timings", "Display operations run time on STDERR.")
- program.option("--toplevel", "Compress and/or mangle variables in toplevel scope.");
- program.option("--verbose", "Print diagnostic messages.");
- program.option("--warn", "Print warning messages.");
- program.option("--wrap <name>", "Embed everything as a function with “exports” corresponding to “name” globally.");
- program.arguments("[files...]").parseArgv(process.argv);
- if (program.configFile) {
- options = JSON.parse(read_file(program.configFile));
- }
- if (!program.output && program.sourceMap && program.sourceMap.url != "inline") {
- fatal("ERROR: cannot write source map to STDOUT");
- }
- [
- "compress",
- "ie8",
- "mangle",
- "rename",
- "safari10",
- "sourceMap",
- "toplevel",
- "wrap"
- ].forEach(function(name) {
- if (name in program) {
- if (name == "rename" && program[name]) return;
- options[name] = program[name];
- }
- });
- if ("ecma" in program) {
- if (program.ecma != (program.ecma | 0)) fatal("ERROR: ecma must be an integer");
- options.ecma = program.ecma | 0;
- }
- if (program.beautify) {
- options.output = typeof program.beautify == "object" ? program.beautify : {};
- if (!("beautify" in options.output)) {
- options.output.beautify = true;
- }
- }
- if (program.comments) {
- if (typeof options.output != "object") options.output = {};
- options.output.comments = typeof program.comments == "string" ? program.comments : "some";
- }
- if (program.define) {
- if (typeof options.compress != "object") options.compress = {};
- if (typeof options.compress.global_defs != "object") options.compress.global_defs = {};
- for (var expr in program.define) {
- options.compress.global_defs[expr] = program.define[expr];
- }
- }
- if (program.keepClassnames) {
- options.keep_classnames = true;
- }
- if (program.keepFnames) {
- options.keep_fnames = true;
- }
- if (program.mangleProps) {
- if (program.mangleProps.domprops) {
- delete program.mangleProps.domprops;
- } else {
- if (typeof program.mangleProps != "object") program.mangleProps = {};
- if (!Array.isArray(program.mangleProps.reserved)) program.mangleProps.reserved = [];
- require("../tools/domprops").forEach(function(name) {
- UglifyJS._push_uniq(program.mangleProps.reserved, name);
- });
- }
- if (typeof options.mangle != "object") options.mangle = {};
- options.mangle.properties = program.mangleProps;
- }
- if (program.nameCache) {
- options.nameCache = JSON.parse(read_file(program.nameCache, "{}"));
- }
- if (program.output == "ast") {
- options.output = {
- ast: true,
- code: false
- };
- }
- if (program.parse) {
- if (!program.parse.acorn && !program.parse.spidermonkey) {
- options.parse = program.parse;
- } else if (program.sourceMap && program.sourceMap.content == "inline") {
- fatal("ERROR: inline source map only works with built-in parser");
- }
- }
- var convert_path = function(name) {
- return name;
- };
- if (typeof program.sourceMap == "object" && "base" in program.sourceMap) {
- convert_path = function() {
- var base = program.sourceMap.base;
- delete options.sourceMap.base;
- return function(name) {
- return path.relative(base, name);
- };
- }();
- }
- if (program.verbose) {
- options.warnings = "verbose";
- } else if (program.warn) {
- options.warnings = true;
- }
- if (program.self) {
- if (program.args.length) {
- print_error("WARN: Ignoring input files since --self was passed");
- }
- if (!options.wrap) options.wrap = "UglifyJS";
- simple_glob(UglifyJS.FILES).forEach(function(name) {
- files[convert_path(name)] = read_file(name);
- });
- run();
- } else if (program.args.length) {
- simple_glob(program.args).forEach(function(name) {
- files[convert_path(name)] = read_file(name);
- });
- run();
- } else {
- var chunks = [];
- process.stdin.setEncoding("utf8");
- process.stdin.on("data", function(chunk) {
- chunks.push(chunk);
- }).on("end", function() {
- files = [ chunks.join("") ];
- run();
- });
- process.stdin.resume();
- }
-
- function convert_ast(fn) {
- return UglifyJS.AST_Node.from_mozilla_ast(Object.keys(files).reduce(fn, null));
- }
-
- function run() {
- UglifyJS.AST_Node.warn_function = function(msg) {
- print_error("WARN: " + msg);
- };
- if (program.timings) options.timings = true;
- try {
- if (program.parse) {
- if (program.parse.acorn) {
- files = convert_ast(function(toplevel, name) {
- return require("acorn").parse(files[name], {
- locations: true,
- program: toplevel,
- sourceFile: name
- });
- });
- } else if (program.parse.spidermonkey) {
- files = convert_ast(function(toplevel, name) {
- var obj = JSON.parse(files[name]);
- if (!toplevel) return obj;
- toplevel.body = toplevel.body.concat(obj.body);
- return toplevel;
- });
- }
- }
- } catch (ex) {
- fatal(ex);
- }
- var result = UglifyJS.minify(files, options);
- if (result.error) {
- var ex = result.error;
- if (ex.name == "SyntaxError") {
- print_error("Parse error at " + ex.filename + ":" + ex.line + "," + ex.col);
- var col = ex.col;
- var lines = files[ex.filename].split(/\r?\n/);
- var line = lines[ex.line - 1];
- if (!line && !col) {
- line = lines[ex.line - 2];
- col = line.length;
- }
- if (line) {
- var limit = 70;
- if (col > limit) {
- line = line.slice(col - limit);
- col = limit;
- }
- print_error(line.slice(0, 80));
- print_error(line.slice(0, col).replace(/\S/g, " ") + "^");
- }
- }
- if (ex.defs) {
- print_error("Supported options:");
- print_error(format_object(ex.defs));
- }
- fatal(ex);
- } else if (program.output == "ast") {
- print(JSON.stringify(result.ast, function(key, value) {
- if (skip_key(key)) return;
- if (value instanceof UglifyJS.AST_Token) return;
- if (value instanceof UglifyJS.Dictionary) return;
- if (value instanceof UglifyJS.AST_Node) {
- var result = {
- _class: "AST_" + value.TYPE
- };
- value.CTOR.PROPS.forEach(function(prop) {
- result[prop] = value[prop];
- });
- return result;
- }
- return value;
- }, 2));
- } else if (program.output == "spidermonkey") {
- print(JSON.stringify(UglifyJS.minify(result.code, {
- compress: false,
- mangle: false,
- output: {
- ast: true,
- code: false
- }
- }).ast.to_mozilla_ast(), null, 2));
- } else if (program.output) {
- fs.writeFileSync(program.output, result.code);
- if (result.map) {
- fs.writeFileSync(program.output + ".map", result.map);
- }
- } else {
- print(result.code);
- }
- if (program.nameCache) {
- fs.writeFileSync(program.nameCache, JSON.stringify(options.nameCache));
- }
- if (result.timings) for (var phase in result.timings) {
- print_error("- " + phase + ": " + result.timings[phase].toFixed(3) + "s");
- }
- }
-
- function fatal(message) {
- if (message instanceof Error) message = message.stack.replace(/^\S*?Error:/, "ERROR:")
- print_error(message);
- process.exit(1);
- }
-
- // A file glob function that only supports "*" and "?" wildcards in the basename.
- // Example: "foo/bar/*baz??.*.js"
- // Argument `glob` may be a string or an array of strings.
- // Returns an array of strings. Garbage in, garbage out.
- function simple_glob(glob) {
- if (Array.isArray(glob)) {
- return [].concat.apply([], glob.map(simple_glob));
- }
- if (glob.match(/\*|\?/)) {
- var dir = path.dirname(glob);
- try {
- var entries = fs.readdirSync(dir);
- } 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);
- }).map(function(name) {
- return path.join(dir, name);
- });
- if (results.length) return results;
- }
- }
- return [ glob ];
- }
-
- 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(flag) {
- return function(value, options) {
- options = options || {};
- try {
- UglifyJS.minify(value, {
- parse: {
- expression: true
- },
- compress: false,
- mangle: false,
- output: {
- ast: true,
- code: false
- }
- }).ast.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.getValue() : value.print_to_string({
- quote_keys: true
- });
- }
- }));
- } catch(ex) {
- if (flag) {
- fatal("Error parsing arguments for '" + flag + "': " + value);
- } else {
- options[value] = null;
- }
- }
- return options;
- }
- }
-
- function parse_source_map() {
- var parse = parse_js();
- return function(value, options) {
- var hasContent = options && "content" in options;
- var settings = parse(value, options);
- if (!hasContent && settings.content && settings.content != "inline") {
- print_error("INFO: Using input source map: " + settings.content);
- settings.content = read_file(settings.content, settings.content);
- }
- return settings;
- }
- }
-
- function skip_key(key) {
- return skip_keys.indexOf(key) >= 0;
- }
-
- 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");
- }
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