Replace build system with a faster new one that uses Node and UglifyJS and generates...

[jquery.git] / build / uglify.js

diff --git a/build/uglify.js b/build/uglify.js
new file mode 100644 (file)
index 0000000..943ddd8
--- /dev/null
+++ b/build/uglify.js
@@ -0,0 +1,199 @@
+#! /usr/bin/env node
+// -*- js2 -*-
+
+global.sys = require(/^v0\.[012]/.test(process.version) ? "sys" : "util");
+var fs = require("fs"),
+    jsp = require("./lib/parse-js"),
+    pro = require("./lib/process");
+
+pro.set_logger(function(msg){
+        sys.debug(msg);
+});
+
+var options = {
+        ast: false,
+        mangle: true,
+        mangle_toplevel: false,
+        squeeze: true,
+        make_seqs: true,
+        dead_code: true,
+        beautify: false,
+        verbose: false,
+        show_copyright: true,
+        out_same_file: false,
+        extra: false,
+        unsafe: false,            // XXX: extra & unsafe?  but maybe we don't want both, so....
+        beautify_options: {
+                indent_level: 4,
+                indent_start: 0,
+                quote_keys: false,
+                space_colon: false
+        },
+        output: true            // stdout
+};
+
+var args = jsp.slice(process.argv, 2);
+var filename;
+
+out: while (args.length > 0) {
+        var v = args.shift();
+        switch (v) {
+            case "-b":
+            case "--beautify":
+                options.beautify = true;
+                break;
+            case "-i":
+            case "--indent":
+                options.beautify_options.indent_level = args.shift();
+                break;
+            case "-q":
+            case "--quote-keys":
+                options.beautify_options.quote_keys = true;
+                break;
+            case "-mt":
+            case "--mangle-toplevel":
+                options.mangle_toplevel = true;
+                break;
+            case "--no-mangle":
+            case "-nm":
+                options.mangle = false;
+                break;
+            case "--no-squeeze":
+            case "-ns":
+                options.squeeze = false;
+                break;
+            case "--no-seqs":
+                options.make_seqs = false;
+                break;
+            case "--no-dead-code":
+                options.dead_code = false;
+                break;
+            case "--no-copyright":
+            case "-nc":
+                options.show_copyright = false;
+                break;
+            case "-o":
+            case "--output":
+                options.output = args.shift();
+                break;
+            case "--overwrite":
+                options.out_same_file = true;
+                break;
+            case "-v":
+            case "--verbose":
+                options.verbose = true;
+                break;
+            case "--ast":
+                options.ast = true;
+                break;
+            case "--extra":
+                options.extra = true;
+                break;
+            case "--unsafe":
+                options.unsafe = true;
+                break;
+            default:
+                filename = v;
+                break out;
+        }
+}
+
+if (filename) {
+        fs.readFile(filename, "utf8", function(err, text){
+                if (err) {
+                        throw err;
+                }
+                output(squeeze_it(text));
+        });
+} else {
+        var stdin = process.openStdin();
+        stdin.setEncoding("utf8");
+        var text = "";
+        stdin.on("data", function(chunk){
+                text += chunk;
+        });
+        stdin.on("end", function() {
+                output(squeeze_it(text));
+        });
+}
+
+function output(text) {
+        var out;
+        if (options.out_same_file && filename)
+                options.output = filename;
+        if (options.output === true) {
+                out = process.stdout;
+        } else {
+                out = fs.createWriteStream(options.output, {
+                        flags: "w",
+                        encoding: "utf8",
+                        mode: 0644
+                });
+        }
+        out.write(text);
+        out.end();
+};
+
+// --------- main ends here.
+
+function show_copyright(comments) {
+        var ret = "";
+        for (var i = 0; i < comments.length; ++i) {
+                var c = comments[i];
+                if (c.type == "comment1") {
+                        ret += "//" + c.value + "\n";
+                } else {
+                        ret += "/*" + c.value + "*/";
+                }
+        }
+        return ret;
+};
+
+function squeeze_it(code) {
+        var result = "";
+        if (options.show_copyright) {
+                var initial_comments = [];
+                // keep first comment
+                var tok = jsp.tokenizer(code, false), c;
+                c = tok();
+                var prev = null;
+                while (/^comment/.test(c.type) && (!prev || prev == c.type)) {
+                        initial_comments.push(c);
+                        prev = c.type;
+                        c = tok();
+                }
+                result += show_copyright(initial_comments);
+        }
+        try {
+                var ast = time_it("parse", function(){ return jsp.parse(code); });
+                if (options.mangle)
+                        ast = time_it("mangle", function(){ return pro.ast_mangle(ast, options.mangle_toplevel); });
+                if (options.squeeze)
+                        ast = time_it("squeeze", function(){
+                                ast = pro.ast_squeeze(ast, {
+                                        make_seqs : options.make_seqs,
+                                        dead_code : options.dead_code,
+                                        extra     : options.extra
+                                });
+                                if (options.unsafe)
+                                        ast = pro.ast_squeeze_more(ast);
+                                return ast;
+                        });
+                if (options.ast)
+                        return sys.inspect(ast, null, null);
+                result += time_it("generate", function(){ return pro.gen_code(ast, options.beautify && options.beautify_options) });
+                return result;
+        } catch(ex) {
+                sys.debug(ex.stack);
+                sys.debug(sys.inspect(ex));
+                sys.debug(JSON.stringify(ex));
+        }
+};
+
+function time_it(name, cont) {
+        if (!options.verbose)
+                return cont();
+        var t1 = new Date().getTime();
+        try { return cont(); }
+        finally { sys.debug("// " + name + ": " + ((new Date().getTime() - t1) / 1000).toFixed(3) + " sec."); }
+};