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/**↩
* jQuery BASE64 functions↩
* ↩
* <code>↩
* Encodes the given data with base64. ↩
* String $.base64Encode ( String str )↩
* <br />↩
* Decodes a base64 encoded data.↩
* String $.base64Decode ( String str )↩
* </code>↩
* ↩
* Encodes and Decodes the given data in base64.↩
* This encoding is designed to make binary data survive transport through transport layers that are not 8-bit clean, such as mail bodies.↩
* Base64-encoded data takes about 33% more space than the original data. ↩
* This javascript code is used to encode / decode data using base64 (this encoding is designed to make binary data survive transport through transport layers that are not 8-bit clean). Script is fully compatible with UTF-8 encoding. You can use base64 encoded data as simple encryption mechanism.↩
* If you plan using UTF-8 encoding in your project don't forget to set the page encoding to UTF-8 (Content-Type meta tag). ↩
* This function orginally get from the WebToolkit and rewrite for using as the jQuery plugin.↩
* ↩
* Example↩
* Code↩
* <code>↩
* $.base64Encode("I'm Persian."); ↩
* </code>↩
* Result↩
* <code>↩
* "SSdtIFBlcnNpYW4u"↩
* </code>↩
* Code↩
* <code>↩
* $.base64Decode("SSdtIFBlcnNpYW4u");↩
* </code>↩
* Result↩
* <code>↩
* "I'm Persian."↩
* </code>↩
* ↩
* @alias Muhammad Hussein Fattahizadeh < muhammad [AT] semnanweb [DOT] com >↩
* @param {jQuery} {base64Encode:function(input))↩
* @param {jQuery} {base64Decode:function(input))↩
* @return string↩
*/↩
↩
(function($){↩
↩
var keyString = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";↩
↩
var uTF8Encode = function(string) {↩
string = string.replace(/\x0d\x0a/g, "\x0a");↩
var output = "";↩
for (var n = 0; n < string.length; n++) {↩
var c = string.charCodeAt(n);↩
if (c < 128) {↩
output += String.fromCharCode(c);↩
} else if ((c > 127) && (c < 2048)) {↩
output += String.fromCharCode((c >> 6) | 192);↩
output += String.fromCharCode((c & 63) | 128);↩
} else {↩
output += String.fromCharCode((c >> 12) | 224);↩
output += String.fromCharCode(((c >> 6) & 63) | 128);↩
output += String.fromCharCode((c & 63) | 128);↩
}↩
}↩
return output;↩
};↩
↩
var uTF8Decode = function(input) {↩
var string = "";↩
var i = 0;↩
var c = c2 = c3 = c4 = 0;↩
while ( i < input.length ) {↩
c = input.charCodeAt(i);↩
if (c < 128) { // 1 byte encoding - ASCII only↩
string += String.fromCharCode(c);↩
i++;↩
} else if ((c >= 192) && (c < 224)) { // 2 byte encoding - max U+07FF↩
c2 = input.charCodeAt(i+1);↩
string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));↩
i += 2;↩
} else if ((c >= 224) && (c < 240)) { // 3 byte encoding - max U+FFFF↩
c2 = input.charCodeAt(i+1);↩
c3 = input.charCodeAt(i+2);↩
string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));↩
i += 3;↩
} else if ((c >= 240) && (c < 248)){ // 4 byte encoding - max U+10FFFF. Covers all Unicode CodePoints↩
c2 = input.charCodeAt(i+1);↩
c3 = input.charCodeAt(i+2);↩
c4 = input.charCodeAt(i+3);↩
var codePoint = (((c & 7) << 18) | ((c2 & 63) << 12) | ((c3 & 63) << 6) | (c4 & 63));↩
if (codePoint > 0x10FFFF) {↩
throw new SyntaxError("invalid UTF-8 code unit sequence");↩
}↩
var highSurrogate = (((codePoint - 0x10000) & 0xFFC00) >>> 10) + 0xD800; // Minus 0x10000, then top 10 bits added to 0xD800↩
var lowSurrogate = ((codePoint - 0x10000) & 0x3FF) + 0xDC00; // Minus 0x10000, then low 10 bits added to 0xDC00↩
string += String.fromCharCode(highSurrogate);↩
string += String.fromCharCode(lowSurrogate);↩
i += 4;↩
↩
}↩
}↩
return string;↩
}↩
↩
$.extend({↩
base64Encode: function(input) {↩
var output = "";↩
var chr1, chr2, chr3, enc1, enc2, enc3, enc4;↩
var i = 0;↩
input = uTF8Encode(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 + keyString.charAt(enc1) + keyString.charAt(enc2) + keyString.charAt(enc3) + keyString.charAt(enc4);↩
}↩
return output;↩
},↩
base64Decode: 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 = keyString.indexOf(input.charAt(i++));↩
enc2 = keyString.indexOf(input.charAt(i++));↩
enc3 = keyString.indexOf(input.charAt(i++));↩
enc4 = keyString.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 = uTF8Decode(output);↩
return output;↩
}↩
});↩
})(jQuery);↩