I wanted a way to quickly test some html templates I was barfing up...

qw.js

/*jslint white: false, onevar: false, laxbreak: true, maxerr: 500000
*/
/*global require console process
*/
 
var http = require('http'),
    url  = require('url'),
    fs   = require('fs');

function mystat(path) {
    var stats;
    try { stats = fs.statSync(path); } catch(ignore){}
    return stats;
}

http.createServer(function (req, res) {
    var parts, stats, file_contents, ext, ct, path = url.parse(req.url, false).pathname.replace(/\.\./g, "dick-move");

    if( parts = path.match(/\.([^.]+)$/) )
        ext = parts[1];

    switch(ext) {
        case "html": ct = "text/html; charset=utf-8"; break;
        case "css":  ct = "text/css; charset=utf-8";  break;
        case "ipk":  ct = "application/octet-stream"; break;
        case "js":   ct = "application/javascript";   break;
    }

    path = "." + (path.match(/^\//) ? path : "/" + path);

    stats = mystat(path);

    try {
        if( !stats ) {
            console.log("404(" + path + ")");

            res.writeHead(404, {'Content-Type': "text/plain"});
            res.end("404 ERROR: file not found\n");

        } else if( stats.isFile() ) {
            console.log("200-file(" + path + ")");

            file_contents  = fs.readFileSync(path);
            res.writeHead(200, {'Content-Type': ct});
            res.end(file_contents);

        } else if( !process.env.skip_index && stats.isDirectory() && mystat(path + "index.html") ) {
            console.log("200-file(" + path + "auto(index.html))");
            var file_contents = fs.readFileSync(path + "index.html");
            res.writeHead(200, {'Content-Type': 'text/html; charset=utf-8'});
            res.end(file_contents);

        } else if( stats.isDirectory() ) {
            console.log("200-dir(" + path + ")");

            var files = fs.readdirSync(path);

            res.writeHead(200, {'Content-type': "text/html; charset=utf-8"});
            res.write("<ul>\n");

            for(var i=0; i<files.length; i++)
                res.write("<li><a href='" + files[i] + "'>" + files[i] + "</a></li>\n");

            res.end("</ul>\n");

        } else {
            console.log("403(" + path + ")");

            res.writeHead(403, {'Content-Type': "text/plain"});
            res.end("403 ERROR: permission denied, file type not handled\n");
        }

    } catch(e) {
        console.log("500(" + path + "): " + e);

        res.writeHead(500, {'Content-Type': "text/plain; charset=utf-8"});
        res.end("500 ERROR: " + e + " — loading(" + path + ", " + ext + ")\n");
    }

}).listen(process.argv[2] || 9000);

console.log("Server running at http://"
    + (process.env.HOSTNAME || "localhost") + ":"
    + (process.argv[2] || 9000) + "/"
    + (process.env.skip_index ? " — skipping index.html when found" : ""));