local-server.js

var http = require("http"),
	url = require("url"),
	fs = require("fs"),
	tachyon = require( './index' ),
	args = process.argv.slice(2),
	port = Number( args[0] ) ? args[0] : 8080,
	debug = args.indexOf( '--debug' ) > -1;

http.createServer( function( request, response ) {
	var params = url.parse( request.url, true );

	if ( debug ) {
		console.log( Date(), request.url );
	}

	try {
		var imageData = fs.readFileSync( decodeURI( params.pathname.substr(1) ) );
	} catch ( err ) {
		response.writeHead( err.statusCode ? err.statusCode : 500 );
		response.write( err.message );
		return response.end();
	}

	params.query.key = decodeURI( params.pathname.substr(1) );

	return tachyon.resizeBuffer( imageData, params.query, function( err, data, info ) {
		if ( err ) {
			if ( err.message === 'fallback-to-original' ) {
				response.writeHead( 200, {
					'Content-Type': 'image/gif',
					'Content-Length': Buffer.byteLength( imageData ),
				} );
				response.write( imageData );
				return response.end();
			}
			if ( debug ) {
				console.error( Date(), err );
			}
			response.writeHead( err.statusCode ? err.statusCode : 500 );
			response.write( err.message );
			return response.end();
		}
		response.writeHead( 200, {
			'Content-Type': 'image/' + info.format,
			'Content-Length': info.size,
		} );
		response.write( data );
		return response.end();
	} );
} ).listen( parseInt( port, 10 ) );

console.log( "Server running at\n	=> http://localhost:" + port + "/\nCTRL + C to shutdown" )