#! /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", "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("--ie8", "Support non-standard Internet Explorer 8."); 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("--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", "sourceMap", "toplevel", "wrap" ].forEach(function(name) { if (name in program) { options[name] = program[name]; } }); 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.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"); }