shopping-list-sms-service/tools.js

An SMS service for a shopping assistance.

var argv = require('optimist').argv;
var fs = require('fs');
var sys = require('util');

var port = argv.p || '80';
var serviceUrl = argv.u || 'service';
var wwwDir = argv.www || process.cwd()+'/frontend';

var static = function (req, res) {

    var filename;
    filename = (req.url === "/") ? wwwDir + "/index.html" : wwwDir + req.url;

    var u = filename.split('.');
    var ext = u.pop();
	ext = ext.split('?');
	ext = ext[0];

    var contentType = 'text/plain';
	var isAllowedExt = true;
	var readAsText = false;

    switch (ext) {
        case "txt":
            contentType = 'text/plain';
            break;
        case "html":
        case "htm":
            contentType = 'text/html';
            break;
        case "css":
        case "less":
            contentType = 'text/css';
            break;
        case "js":
            contentType = 'text/javascript';
            break;
		case "json":
			readAsText = true;
			contentType = 'application/json';
			break;
        case "tsv":
        case "csv":
            contentType = 'text/comma-separated-values';
            break;
        case "ico":
            contentType = 'image/x-ico';
            break;
        case "png":
            contentType = 'image/png';
            break;
        case "jpg":
            contentType = 'image/jpeg';
            break;
        case "gif":
            contentType = 'image/gif';
            break;
		case "xml":
			contentType = 'text/xml';
			break;
		case "pdf":
			contentType = 'application/pdf';
			break;
		case "swf":
			contentType = 'application/x-shockwave-flash';
			break;
		case "eot":
		case "ttf":
		case "woff":
			contentType = 'application/octet-stream';
			break;
        case "svg":
            readAsText = true;
            contentType = 'image/svg+xml';
            break;
		default:
			isAllowedExt = false;
			break;
    }

	if ( readAsText === false && (contentType.indexOf('image') >= 0 || contentType.indexOf('application') >= 0) ) {
		fs.readFile(filename, function (err, data) {
			if (err) {
				//throw err;
				res.writeHead(404);
				res.end();
			} else {
				res.writeHead(200, { 'content-type': contentType });
				res.write(data);
				res.end();
			}
		});
    } else {
		if (isAllowedExt) {
			fs.readFile(filename, 'utf8', function (err, data) {
				if (err) {
					//throw err;
					res.writeHead(404);
					res.end();
				} else {
					res.writeHead(200, { 'content-type': contentType });
					res.write(data+"\n");
					res.end();
				}
			});
		} else {
			res.writeHead(200, { 'content-type': 'text/plain' });
			res.write("Not supported file type\n");
			res.end();
		}
    }

};

exports.static = static;

function encode (txt) {
    return new Buffer(txt).toString('base64');
}

function decode (txt) {
    return new Buffer(txt, 'base64').toString('utf8');
}