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