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-
- /**
- *
- * Base64 encode / decode
- * http://www.webtoolkit.info/
- *
- **/
-
- (function() {
- var _Base64 = {
-
- // private property
- _keyStr :
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
-
- // public method for encoding
- encode : function (input, isBinaryData) {
- var output = [];
- var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
- var i = 0;
-
- input = isBinaryData ? String.fromCharCode.apply(null, input) :
- _Base64._utf8_encode(input);
-
- var len = input.length;
- while (i < len) {
- 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.push(
- this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) +
- this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4));
- }
-
- return output.join("");
- },
-
- // public method for decoding
- decode : function (input) {
- if(!input)
- return "";
- var output = [];
- var chr1, chr2, chr3;
- var enc1, enc2, enc3, enc4;
- var i = 0;
-
- input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
-
- var len = input.length;
- while (i < len) {
- 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.push( String.fromCharCode(chr1));
- if (enc3 != 64) {
- output.push(String.fromCharCode(chr2));
- }
- if (enc4 != 64) {
- output.push( String.fromCharCode(chr3));
- }
- }
-
- return _Base64._utf8_decode(output.join(""));
- },
-
- // private method for UTF-8 encoding
- _utf8_encode : function (string) {
- string = string.replace(/\r\n/g,"\n");
- var utftext = [];
- var len = string.length;
-
- for (var n = 0; n < len; n++) {
-
- var c = string.charCodeAt(n);
-
- if (c < 128) {
- utftext.push( String.fromCharCode(c));
- }
- else if((c > 127) & (c < 2048)) {
- utftext.push(String.fromCharCode((c >> 6) | 192),
- String.fromCharCode((c & 63) | 128));
- }
- else {
- utftext.push( String.fromCharCode((c >> 12) | 224),
- String.fromCharCode(((c >> 6) & 63) | 128),
- String.fromCharCode((c & 63) | 128));
- }
-
- }
-
- return utftext.join("");
- },
-
- // private method for UTF-8 decoding
- _utf8_decode : function (utftext) {
- var string = [];
- var i = 0;
- var c = c1 = c2 = 0;
- var len = utftext.length;
-
- while ( i < len ) {
-
- c = utftext.charCodeAt(i);
-
- if (c < 128) {
- string.push(String.fromCharCode(c));
- i++;
- }
- else if((c > 191) & (c < 224)) {
- c2 = utftext.charCodeAt(i+1);
- string.push(String.fromCharCode(((c & 31) << 6) | (c2 & 63)));
- i += 2;
- }
- else {
- c2 = utftext.charCodeAt(i+1);
- c3 = utftext.charCodeAt(i+2);
- string.push( String.fromCharCode(((c & 15) << 12) |
- ((c2 & 63) << 6) | (c3 & 63)));
- i += 3;
- }
-
- }
-
- return string.join("");
- }
- }
-
-
- if (typeof(window) != 'undefined' && window.Foxmarks) {
- Foxmarks.provide('Foxmarks.ThirdParty.Base64');
- Foxmarks.ThirdParty.Base64 = _Base64 ;
- } else {
- Base64 = _Base64;
- }
-
-
-
- })();
-