Replace CSS images with inline base64 data

cssincimages

var fs = require('fs');
var path = require('path');

function cssIncImages(cssFile) {
	var imgRegex = /url\s?\(['"]?(.*?)(?=['"]?\))/gi;
	var css = fs.readFileSync(cssFile, 'utf-8');
	while (match = imgRegex.exec(css)) {
		var imgPath = path.join(path.dirname(cssFile), match[1]);
		try {
			var img = fs.readFileSync(imgPath, 'base64');
			var ext = imgPath.substr(imgPath.lastIndexOf('.') + 1);
			css = css.replace(match[1], 'data:image/' + ext + ';base64,' + img);
		} catch (err) {
			console.log('Image not found (%s).', imgPath);
		}
	}
	// fs.writeFileSync(cssFile, css, 'utf-8'); // you can overwrite the original file with this line
	return css;
}