var path = require("path"); var fs = require("fs"); var vm = require("vm"); var UglifyJS = vm.createContext({ console : console, process : process, Buffer : Buffer, MOZ_SourceMap : require("source-map") }); function load_global(file) { file = path.resolve(path.dirname(module.filename), file); try { var code = fs.readFileSync(file, "utf8"); return vm.runInContext(code, UglifyJS, file); } catch(ex) { // XXX: in case of a syntax error, the message is kinda // useless. (no location information). console.log("ERROR in file: " + file + " / " + ex); process.exit(1); } }; var FILES = exports.FILES = [ "../lib/utils.js", "../lib/ast.js", "../lib/parse.js", "../lib/transform.js", "../lib/scope.js", "../lib/output.js", "../lib/compress.js", "../lib/sourcemap.js", "../lib/mozilla-ast.js", "../lib/propmangle.js" ].map(function(file){ return fs.realpathSync(path.join(path.dirname(__filename), file)); }); FILES.forEach(load_global); UglifyJS.AST_Node.warn_function = function(txt) { console.error("WARN: %s", txt); }; // XXX: perhaps we shouldn't export everything but heck, I'm lazy. for (var i in UglifyJS) { if (UglifyJS.hasOwnProperty(i)) { exports[i] = UglifyJS[i]; } } exports.minify = function(files, options) { options = UglifyJS.defaults(options, { spidermonkey : false, outSourceMap : null, sourceRoot : null, inSourceMap : null, fromString : false, warnings : false, mangle : {}, output : null, compress : {} }); UglifyJS.base54.reset(); // 1. parse var toplevel = null, sourcesContent = {}; if (options.spidermonkey) { toplevel = UglifyJS.AST_Node.from_mozilla_ast(files); } else { if (typeof files == "string") files = [ files ]; files.forEach(function(file){ var code = options.fromString ? file : fs.readFileSync(file, "utf8"); sourcesContent[file] = code; toplevel = UglifyJS.parse(code, { filename: options.fromString ? "?" : file, toplevel: toplevel }); }); } // 2. compress if (options.compress) { var compress = { warnings: options.warnings }; UglifyJS.merge(compress, options.compress); toplevel.figure_out_scope(); var sq = UglifyJS.Compressor(compress); toplevel = toplevel.transform(sq); } // 3. mangle if (options.mangle) { toplevel.figure_out_scope(options.mangle); toplevel.compute_char_frequency(options.mangle); toplevel.mangle_names(options.mangle); } // 4. output var inMap = options.inSourceMap; var output = {}; if (typeof options.inSourceMap == "string") { inMap = fs.readFileSync(options.inSourceMap, "utf8"); } if (options.outSourceMap) { output.source_map = UglifyJS.SourceMap({ file: options.outSourceMap, orig: inMap, root: options.sourceRoot }); if (options.sourceMapIncludeSources) { for (var file in sourcesContent) { if (sourcesContent.hasOwnProperty(file)) { output.source_map.get().setSourceContent(file, sourcesContent[file]); } } } } if (options.output) { UglifyJS.merge(output, options.output); } var stream = UglifyJS.OutputStream(output); toplevel.print(stream); if(options.outSourceMap){ stream += "\n//# sourceMappingURL=" + options.outSourceMap; } var source_map = output.source_map; if (source_map) { source_map = source_map + ""; } return { code : stream + "", map : source_map }; }; // exports.describe_ast = function() { // function doitem(ctor) { // var sub = {}; // ctor.SUBCLASSES.forEach(function(ctor){ // sub[ctor.TYPE] = doitem(ctor); // }); // var ret = {}; // if (ctor.SELF_PROPS.length > 0) ret.props = ctor.SELF_PROPS; // if (ctor.SUBCLASSES.length > 0) ret.sub = sub; // return ret; // } // return doitem(UglifyJS.AST_Node).sub; // } exports.describe_ast = function() { var out = UglifyJS.OutputStream({ beautify: true }); function doitem(ctor) { out.print("AST_" + ctor.TYPE); var props = ctor.SELF_PROPS.filter(function(prop){ return !/^\$/.test(prop); }); if (props.length > 0) { out.space(); out.with_parens(function(){ props.forEach(function(prop, i){ if (i) out.space(); out.print(prop); }); }); } if (ctor.documentation) { out.space(); out.print_string(ctor.documentation); } if (ctor.SUBCLASSES.length > 0) { out.space(); out.with_block(function(){ ctor.SUBCLASSES.forEach(function(ctor, i){ out.indent(); doitem(ctor); out.newline(); }); }); } }; doitem(UglifyJS.AST_Node); return out + ""; }; function readReservedFile(filename, reserved) { if (!reserved) { reserved = { vars: [], props: [] }; } var data = fs.readFileSync(filename, "utf8"); data = JSON.parse(data); if (data.vars) { data.vars.forEach(function(name){ UglifyJS.push_uniq(reserved.vars, name); }); } if (data.props) { data.props.forEach(function(name){ UglifyJS.push_uniq(reserved.props, name); }); } return reserved; } exports.readReservedFile = readReservedFile; exports.readDefaultReservedFile = function(reserved) { return readReservedFile(path.join(__dirname, "domprops.json"), reserved); }; exports.readNameCache = function(filename, key) { var cache = null; if (filename) { try { var cache = fs.readFileSync(filename, "utf8"); cache = JSON.parse(cache)[key]; if (!cache) throw "init"; cache.props = UglifyJS.Dictionary.fromObject(cache.props); } catch(ex) { cache = { cname: -1, props: new UglifyJS.Dictionary() }; } } return cache; }; exports.writeNameCache = function(filename, key, cache) { if (filename) { var data; try { data = fs.readFileSync(filename, "utf8"); data = JSON.parse(data); } catch(ex) { data = {}; } data[key] = { cname: cache.cname, props: cache.props.toObject() }; fs.writeFileSync(filename, JSON.stringify(data, null, 2), "utf8"); } };