(function () {

    var b64Chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

    Rakka.encodeBase64 = function (src) {
        var len = src.length;
        var i   = 0;
        var ret = "";

        while (i < len) {
            var c1 = src.charCodeAt(i++);
            
            if (i == len) {
                ret += b64Chars.charAt(c1 >> 2);
                ret += b64Chars.charAt((c1 & 0x03) << 4);
                ret += "==";
            }
            else {
                var c2 = src.charCodeAt(i++);

                if (i == len) {
                    ret += b64Chars.charAt(c1 >> 2);
                    ret += b64Chars.charAt(((c1 & 0x03) << 4) | ((c2 & 0xF0) >> 4));
                    ret += b64Chars.charAt((c2 & 0x0F) << 2);
                    ret += "=";
                }
                else {
                    var c3 = src.charCodeAt(i++);

                    ret += b64Chars.charAt(c1 >> 2);
                    ret += b64Chars.charAt(((c1 & 0x03) << 4) | ((c2 & 0xF0) >> 4));
                    ret += b64Chars.charAt(((c2 & 0x0F) << 2) | ((c3 & 0xC0) >> 6));
                    ret += b64Chars.charAt(c3 & 0x3F);
                }
            }
        }

        return ret;
    };

})();