Little Compressor

main.js

var http = require("http"),
url = require("url"),
path = require("path"),
fs = require("fs"),
uggoP = require("uglify-js").parser,
uggo = require("uglify-js").uglify,
port = process.argv[2] || 8675,
server = http.createServer(function(request, response) {
    var uri = url.parse(request.url).pathname, combined_file = "";
    if(uri.indexOf(",") >= 1){
        var libs = uri.split(",");
        
        for(var i=0;i<libs.length;i++){
            if(i === 0){
                libs[i] = libs[i].split("/")[1];
            }
            
            var filename = combine(libs[i]);
            
            path.exists(filename, function(exists) {
                
                console.log("exists: "+exists);
                var file = fs.readFileSync(filename);
                var buf = new Buffer(file);
                combined_file += buf.toString();
                
            }(filename));
            
        }
        console.log("COMBINED FILE: " + combined_file);
        var encased_files = encase(combined_file);
        console.log(encased_files);
        sendEncased(encased_files);
    }
    
    function combine(file){
        var filename;
        switch(file){
            case "jQuery":
                filename = path.join(process.cwd(), "/js/jQuery_uncompressed.1.7.2.js");
                break;
            case "backbone":
                filename = path.join(process.cwd(), "/js/backbone.js");
                break;
            case "json2":
                filename = path.join(process.cwd(), "/js/json2.js");
                break;
            case "underscore":
                filename = path.join(process.cwd(), "/js/underscore.js");
                break;
            case "jqm":
                filename = path.join(process.cwd(), "/js/jquery-mobile.js");
                break;
        }
        return filename;
    }
        
    function encase(file){
        var parse = uggoP.parse(file);
        parse = uggo.ast_mangle(parse);
        parse = uggo.ast_squeeze(parse);
        return uggo.gen_code(parse);
    }
    
    function sendEncased(file){
        response.writeHead(200, {
            "Content-Type": "text/javascript"
        });
        response.write(file, "binary");
        response.end();
    }
        
}).listen(parseInt(port, 10));
console.log("encasejs running on port: "+port);