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/**
*
* Base64 encode / decode
* http://www.webtoolkit.info/
*
*
* VERSION 12 is BROKEN (vars a & vid not declared).
* Use Version 14+
*
**/
Base64 = {
// private property
_keyStr: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
// public method for encoding
encode: function(input) {
var output = "";
var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
var i = 0;
input = Base64._utf8_encode(input);
while (i < input.length) {
chr1 = input.charCodeAt(i++);
chr2 = input.charCodeAt(i++);
chr3 = input.charCodeAt(i++);
enc1 = chr1 >> 2;
enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
enc4 = chr3 & 63;
if (isNaN(chr2)) {
enc3 = enc4 = 64;
} else if (isNaN(chr3)) {
enc4 = 64;
}
output = output + this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) + this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4);
}
return output;
},
// public method for decoding
decode: function(input) {
var output = "";
var chr1, chr2, chr3;
var enc1, enc2, enc3, enc4;
var i = 0;
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
while (i < input.length) {
enc1 = this._keyStr.indexOf(input.charAt(i++));
enc2 = this._keyStr.indexOf(input.charAt(i++));
enc3 = this._keyStr.indexOf(input.charAt(i++));
enc4 = this._keyStr.indexOf(input.charAt(i++));
chr1 = (enc1 << 2) | (enc2 >> 4);
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
chr3 = ((enc3 & 3) << 6) | enc4;
output = output + String.fromCharCode(chr1);
if (enc3 != 64) {
output = output + String.fromCharCode(chr2);
}
if (enc4 != 64) {
output = output + String.fromCharCode(chr3);
}
}
output = Base64._utf8_decode(output);
return output;
},
// private method for UTF-8 encoding
_utf8_encode: function(string) {
string = string.replace(/\r\n/g, "\n");
var utftext = "";
for (var n = 0; n < string.length; n++) {
var c = string.charCodeAt(n);
if (c < 128) {
utftext += String.fromCharCode(c);
} else if ((c > 127) && (c < 2048)) {
utftext += String.fromCharCode((c >> 6) | 192);
utftext += String.fromCharCode((c & 63) | 128);
} else {
utftext += String.fromCharCode((c >> 12) | 224);
utftext += String.fromCharCode(((c >> 6) & 63) | 128);
utftext += String.fromCharCode((c & 63) | 128);
}
}
return utftext;
},
// private method for UTF-8 decoding
_utf8_decode: function(utftext) {
var string = "";
var i = 0;
var c = c1 = c2 = 0;
while (i < utftext.length) {
c = utftext.charCodeAt(i);
if (c < 128) {
string += String.fromCharCode(c);
i++;
} else if ((c > 191) && (c < 224)) {
c2 = utftext.charCodeAt(i + 1);
string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
i += 2;
} else {
c2 = utftext.charCodeAt(i + 1);
c3 = utftext.charCodeAt(i + 2);
string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
i += 3;
}
}
return string;
}
}
chr = function(code) {
return String.fromCharCode(code);
};
//returns utf8 encoded charachter of a unicode value.
//code must be a number indicating the Unicode value.
//returned value is a string between 1 and 4 charachters.
code2utf = function(code) {
if (code < 128) return chr(code);
if (code < 2048) return chr(192 + (code >> 6)) + chr(128 + (code & 63));
if (code < 65536) return chr(224 + (code >> 12)) + chr(128 + ((code >> 6) & 63)) + chr(128 + (code & 63));
if (code < 2097152) return chr(240 + (code >> 18)) + chr(128 + ((code >> 12) & 63)) + chr(128 + ((code >> 6) & 63)) + chr(128 + (code & 63));
};
//it is a private function for internal use in utf8Encode function
_utf8Encode = function(str) {
var utf8str = new Array();
for (var i = 0; i < str.length; i++) {
utf8str[i] = code2utf(str.charCodeAt(i));
}
return utf8str.join('');
};
//Encodes a unicode string to UTF8 format.
utf8Encode = function(str) {
var utf8str = new Array();
var pos, j = 0;
var tmpStr = '';
while ((pos = str.search(/[^\x00-\x7F]/)) != -1) {
tmpStr = str.match(/([^\x00-\x7F]+[\x00-\x7F]{0,10})+/)[0];
utf8str[j++] = str.substr(0, pos);
utf8str[j++] = _utf8Encode(tmpStr);
str = str.substr(pos + tmpStr.length);
}
utf8str[j++] = str;
return utf8str.join('');
};
// Contained bug: while loop exit prematurely creating incorrect encoding:
// mystr=String.fromCharCode(3)+String.fromCharCode(0)+String.fromCharCode(0)+String.fromCharCode(0);
// encodeBase64(mystr); // "Aw=="
// btoa(mystr); // "AwAAAA=="
for (j = 0; j < str.length; j++) {
code = str.charCodeAt(j);
function encodeBase64(str) {
var chr1, chr2, chr3, rez = '',
arr = [],
i = 0,
j = 0,
code = 0;
var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='.split('');
if (code < 128) {
arr[arr.length] = code;
} else if (code < 2048) {
arr[arr.length] = 192 | (code >> 6);
arr[arr.length] = 128 | (code & 63);
} else if (code < 65536) {
arr[arr.length] = 224 | (code >> 12);
arr[arr.length] = 128 | ((code >> 6) & 63);
arr[arr.length] = 128 | (code & 63);
} else {
arr[arr.length] = 240 | (code >> 18);
arr[arr.length] = 128 | ((code >> 12) & 63);
arr[arr.length] = 128 | ((code >> 6) & 63);
arr[arr.length] = 128 | (code & 63);
}
};
while (i < arr.length) {
chr1 = arr[i++];
chr2 = arr[i++];
chr3 = arr[i++];
rez += chars[chr1 >> 2];
rez += chars[((chr1 & 3) << 4) | (chr2 >> 4)];
rez += chars[chr2 === undefined ? 64 : ((chr2 & 15) << 2) | (chr3 >> 6)];
rez += chars[chr3 === undefined ? 64 : chr3 & 63];
};
return rez;
};
// based on Kevin van Zonneveld (http://kevin.vanzonneveld.net), original by Webtoolkit.info (http://www.webtoolkit.info/)
// improved by: sowberry, Yves Sucaet, kirilloid
// bugfixed by: Onno Marsman, Onno Marsman, Ulrich, Rafal Kukawski
// tweaked by: Jack
function utf8_encode(a) {
var d = 0,
b = 0,
c = "",
f, e;
if (null === a || "undefined" === typeof a) {
return ""
}
a += "";
f = a.length;
for (var g = 0; g < f; g++) {
e = a.charCodeAt(g), crt_encode = null, 128 > e ? d++ : crt_encode = 127 < e && 2048 > e ? String.fromCharCode(e >> 6 | 192, e & 63 | 128) : String.fromCharCode(e >> 12 | 224, e >> 6 & 63 | 128, e & 63 | 128), null !== crt_encode && (d > b && (c += a.slice(b, d)), c += crt_encode, b = d = g + 1)
}
d > b && (c += a.slice(b, f));
return c
}
// based on http://www.webtoolkit.info/
function base64_encode(a) {
var d = "",
b, c, f, e, g, h, j = 0,
k;
a = utf8_encode(a);
for (k = a.length; j < k;) {
b = a.charCodeAt(j++), c = a.charCodeAt(j++), f = a.charCodeAt(j++), e = b >> 2, b = (b & 3) << 4 | c >> 4, g = (c & 15) << 2 | f >> 6, h = f & 63, isNaN(c) ? g = h = 64 : isNaN(f) && (h = 64), d += "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=".charAt(e) + "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=".charAt(b) + "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=".charAt(g) + "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=".charAt(h)
}
return d
}
a = "";
for (var i = 0; i < 100; i++)
a += "teststring ";Ready to run.
| Test | Ops/sec | |
|---|---|---|
| Native btoa function on small image | | ready |
| Native btoa function on large video | | ready |
| native btoa with native utf-8 encoding on small image | | ready |
| native btoa with native utf-8 encoding on large video | | ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.