Function cb_encode

Script/Parser.js:3026–3038

(ccc)

        return u.replace(re_utob, cb_utob);
    };
    var cb_encode = function (ccc) {
        var padlen = [0, 2, 1][ccc.length % 3],
            ord = ccc.charCodeAt(0) << 16
                | ((ccc.length > 1 ? ccc.charCodeAt(1) : 0) << 8)
                | ((ccc.length > 2 ? ccc.charCodeAt(2) : 0)),
            chars = [
                b64chars.charAt(ord >>> 18),
                b64chars.charAt((ord >>> 12) & 63),
                padlen >= 2 ? '=' : b64chars.charAt((ord >>> 6) & 63),
                padlen >= 1 ? '=' : b64chars.charAt(ord & 63)
            ];
        return chars.join('');
    };
    var btoa = function (b) {
        return b.replace(/[\s\S]{1,3}/g, cb_encode);
    };