/**
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* * jQuery BASE64 functions * *
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* <code> * Encodes the given data with base64. * String $.base64Encode ( String str ) * <br /> * Decodes a base64 encoded data. * String $.base64Decode ( String str ) * </code> * *
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* Encodes and Decodes the given data in base64. * This encoding is designed to
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* make binary data survive transport through transport layers that are not
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* 8-bit clean, such as mail bodies. * Base64-encoded data takes about 33% more
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* space than the original data. * This javascript code is used to encode /
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* decode data using base64 (this encoding is designed to make binary data
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* survive transport through transport layers that are not 8-bit clean). Script
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* is fully compatible with UTF-8 encoding. You can use base64 encoded data as
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* simple encryption mechanism. * If you plan using UTF-8 encoding in your
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* project don't forget to set the page encoding to UTF-8 (Content-Type meta
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* tag). * This function orginally get from the WebToolkit and rewrite for using
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* as the jQuery plugin. * * Example * Code *
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* <code> * $.base64Encode("I'm Persian."); * </code> * Result *
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* <code> * "SSdtIFBlcnNpYW4u" * </code> * Code *
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* <code> * $.base64Decode("SSdtIFBlcnNpYW4u"); * </code> * Result *
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* <code> * "I'm Persian." * </code> * *
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*
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* @alias Muhammad Hussein Fattahizadeh < muhammad [AT] semnanweb [DOT] com > *
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* @link http://www.semnanweb.com/jquery-plugin/base64.html (no longer
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* available?) *
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* @link https://gist.github.com/gists/1602210 *
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* @see http://www.webtoolkit.info/ *
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* @license http://www.gnu.org/licenses/gpl.html [GNU General Public License] *
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* @param {jQuery}
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* {base64Encode:function(input)) *
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* @param {jQuery}
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* {base64Decode:function(input)) *
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* @return string
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*/
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(function($) {
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var keyString = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
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var uTF8Encode = function(string) {
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string = string.replace(/\x0d\x0a/g, "\x0a");
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var output = "";
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for ( var n = 0; n < string.length; n++) {
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var c = string.charCodeAt(n);
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if (c < 128) {
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output += String.fromCharCode(c);
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} else if ((c > 127) && (c < 2048)) {
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output += String.fromCharCode((c >> 6) | 192);
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output += String.fromCharCode((c & 63) | 128);
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} else {
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output += String.fromCharCode((c >> 12) | 224);
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output += String.fromCharCode(((c >> 6) & 63) | 128);
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output += String.fromCharCode((c & 63) | 128);
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}
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}
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return output;
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};
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var uTF8Decode = function(input) {
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var string = "";
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var i = 0;
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var c = c1 = c2 = 0;
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while (i < input.length) {
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c = input.charCodeAt(i);
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if (c < 128) {
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string += String.fromCharCode(c);
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i++;
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} else if ((c > 191) && (c < 224)) {
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c2 = input.charCodeAt(i + 1);
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string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
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i += 2;
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} else {
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c2 = input.charCodeAt(i + 1);
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c3 = input.charCodeAt(i + 2);
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string += String.fromCharCode(((c & 15) << 12)
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| ((c2 & 63) << 6) | (c3 & 63));
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i += 3;
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}
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}
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return string;
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}
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$.extend({
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base64Encode : function(input) {
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var output = "";
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var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
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var i = 0;
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input = uTF8Encode(input);
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while (i < input.length) {
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chr1 = input.charCodeAt(i++);
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chr2 = input.charCodeAt(i++);
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chr3 = input.charCodeAt(i++);
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enc1 = chr1 >> 2;
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enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
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enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
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enc4 = chr3 & 63;
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if (isNaN(chr2)) {
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enc3 = enc4 = 64;
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} else if (isNaN(chr3)) {
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enc4 = 64;
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}
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output = output + keyString.charAt(enc1)
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+ keyString.charAt(enc2) + keyString.charAt(enc3)
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+ keyString.charAt(enc4);
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}
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return output;
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},
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base64Decode : function(input) {
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var output = "";
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var chr1, chr2, chr3;
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var enc1, enc2, enc3, enc4;
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var i = 0;
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input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
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while (i < input.length) {
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enc1 = keyString.indexOf(input.charAt(i++));
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enc2 = keyString.indexOf(input.charAt(i++));
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enc3 = keyString.indexOf(input.charAt(i++));
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enc4 = keyString.indexOf(input.charAt(i++));
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chr1 = (enc1 << 2) | (enc2 >> 4);
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chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
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chr3 = ((enc3 & 3) << 6) | enc4;
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output = output + String.fromCharCode(chr1);
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if (enc3 != 64) {
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output = output + String.fromCharCode(chr2);
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}
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if (enc4 != 64) {
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output = output + String.fromCharCode(chr3);
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}
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}
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output = uTF8Decode(output);
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return output;
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}
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});
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})(jQuery);
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