source: Dev/branches/rest-dojo-ui/client/util/build/optimizeRunner.js @ 271

function writeFile(filename, contents, encoding, cb) {
        if (arguments.length==3 && typeof encoding!="string") {
                cb= encoding;
                encoding= 0;
        }
        var
                outFile = new java.io.File(filename),
                outWriter;
        if(encoding){
                outWriter = new java.io.OutputStreamWriter(new java.io.FileOutputStream(outFile), encoding);
        }else{
                outWriter = new java.io.OutputStreamWriter(new java.io.FileOutputStream(outFile));
        }

        var os = new java.io.BufferedWriter(outWriter);
        try{
                os.write(contents);
        }finally{
                os.close();
        }
        if (cb) {
                cb(0);
        };
}

var built = "//>>built\n";

function sscompile(src, dest, optimizeSwitch, copyright){
        // decode the optimize switch
        var
                options= optimizeSwitch.split("."),
                comments= 0,
                keepLines= 0,
                strip= null;
        while(options.length){
                switch(options.pop()){
                        case "normal":
                                strip= "normal";
                                break;
                        case "warn":
                                strip= "warn";
                                break;
                        case "all":
                                strip= "all";
                                break;
                        case "keeplines":
                                keepLines= 1;
                                break;
                        case "comments":
                                comments= 1;
                                break;
                }
        }

        //Use rhino to help do minifying/compressing.
        var context = Packages.org.mozilla.javascript.Context.enter();
        try{
                // Use the interpreter for interactive input (copied this from Main rhino class).
                context.setOptimizationLevel(-1);

                var text= readFile(src, "utf-8");
                if(comments){
                        //Strip comments
                        var script = context.compileString(text, dest, 1, null);
                        text = new String(context.decompileScript(script, 0));

                        //Replace the spaces with tabs.
                        //Ideally do this in the pretty printer rhino code.
                        text = text.replace(/    /g, "\t");
                }else{
                        //Apply compression using custom compression call in Dojo-modified rhino.
                        text = new String(Packages.org.dojotoolkit.shrinksafe.Compressor.compressScript(text, 0, 1, strip));
                        if(!keepLines){
                                text = text.replace(/[\r\n]/g, "");
                        }
                }
        }finally{
                Packages.org.mozilla.javascript.Context.exit();
        }
        writeFile(dest, copyright + built + text, "utf-8");
}

var JSSourceFilefromCode, closurefromCode, jscomp= 0;
function ccompile(src, dest, optimizeSwitch, copyright){
        if(!jscomp){
                // don't do this unless demanded...it may not be available
                JSSourceFilefromCode=java.lang.Class.forName('com.google.javascript.jscomp.JSSourceFile').getMethod('fromCode',[java.lang.String,java.lang.String]);
                closurefromCode = function(filename,content){
                        return JSSourceFilefromCode.invoke(null,[filename,content]);
                };
                jscomp = com.google.javascript.jscomp;
        }
        //Fake extern
        var externSourceFile = closurefromCode("fakeextern.js", " ");

        //Set up source input
        var jsSourceFile = closurefromCode(String(dest), String(readFile(src, "utf-8")));

        //Set up options
        var options = new jscomp.CompilerOptions();
        options.prettyPrint = optimizeSwitch.indexOf(".keepLines") !== -1;

        var FLAG_compilation_level = jscomp.CompilationLevel.SIMPLE_OPTIMIZATIONS;
        FLAG_compilation_level.setOptionsForCompilationLevel(options);
        var FLAG_warning_level = jscomp.WarningLevel.DEFAULT;
        FLAG_warning_level.setOptionsForWarningLevel(options);

        //Run the compiler
        var compiler = new Packages.com.google.javascript.jscomp.Compiler(Packages.java.lang.System.err);
        var result = compiler.compile(externSourceFile, jsSourceFile, options);
        writeFile(dest, copyright + built + compiler.toSource(), "utf-8");
}


var
        console= new java.io.BufferedReader(new java.io.InputStreamReader(java.lang.System["in"])),
        readLine= function(){
                // the + "" convert to a Javascript string
                return console.readLine() + "";
        },
        src, dest, optimizeSwitch, copyright;

while(1){
        // the + "" convert to a Javascript string
        src= readLine();
        if(src=="."){
                break;
        }
        dest= readLine();
        optimizeSwitch= readLine();
        copyright= eval(readLine());
        print(dest + ":");
        var start= (new Date()).getTime();
        if(/closure/.test(optimizeSwitch)){
                ccompile(src, dest, optimizeSwitch, copyright);
        }else{
                sscompile(src, dest, optimizeSwitch, copyright);
        }
        print("Done (compile time:" + ((new Date()).getTime()-start)/1000 + "s)");
}