URL to DataURI converter for NodeJS without Canvas

url-to-datauri-nodejs.js

/*
 * Based on https://gist.github.com/583836 from http://stackoverflow.com/questions/3709391/node-js-base64-encode-a-downloaded-image-for-use-in-data-uri. 
 * /

var http = require('http')
var Stream = require('stream').Transform

http.request(url, function(response) {
	var data = new Stream();

	response.on('data', function(chunk) {
		data.push(chunk);
	});

	response.on('end', function() {
		var data_uri_prefix = "data:" + response.headers["content-type"] + ";base64,";
		var image = new Buffer(data.read(), 'binary').toString('base64');
		var data_uri = data_uri_prefix + image;
	});
}).end();

/*
 * Other similar resources:
 * https://gist.github.com/jfsiii/803410
 * https://gist.github.com/oliyh/db3d1a582aefe6d8fee9
 * http://stackoverflow.com/questions/246801/how-can-you-encode-a-string-to-base64-in-javascript
 */