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authorfriendica <info@friendica.com>2013-11-07 23:25:13 -0800
committerfriendica <info@friendica.com>2013-11-07 23:25:13 -0800
commit3a9cbcaf011f5c5d423e1cd99b43442669692129 (patch)
treed160f11dd97871d94ffe6e6d10ea48ce57eed357 /library/cryptojs/components/enc-base64.js
parent90ab0d963bf5074643c6f275dbb8595b6c51a03d (diff)
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Wankers.
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+/*
+CryptoJS v3.1.2
+code.google.com/p/crypto-js
+(c) 2009-2013 by Jeff Mott. All rights reserved.
+code.google.com/p/crypto-js/wiki/License
+*/
+(function () {
+ // Shortcuts
+ var C = CryptoJS;
+ var C_lib = C.lib;
+ var WordArray = C_lib.WordArray;
+ var C_enc = C.enc;
+
+ /**
+ * Base64 encoding strategy.
+ */
+ var Base64 = C_enc.Base64 = {
+ /**
+ * Converts a word array to a Base64 string.
+ *
+ * @param {WordArray} wordArray The word array.
+ *
+ * @return {string} The Base64 string.
+ *
+ * @static
+ *
+ * @example
+ *
+ * var base64String = CryptoJS.enc.Base64.stringify(wordArray);
+ */
+ stringify: function (wordArray) {
+ // Shortcuts
+ var words = wordArray.words;
+ var sigBytes = wordArray.sigBytes;
+ var map = this._map;
+
+ // Clamp excess bits
+ wordArray.clamp();
+
+ // Convert
+ var base64Chars = [];
+ for (var i = 0; i < sigBytes; i += 3) {
+ var byte1 = (words[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff;
+ var byte2 = (words[(i + 1) >>> 2] >>> (24 - ((i + 1) % 4) * 8)) & 0xff;
+ var byte3 = (words[(i + 2) >>> 2] >>> (24 - ((i + 2) % 4) * 8)) & 0xff;
+
+ var triplet = (byte1 << 16) | (byte2 << 8) | byte3;
+
+ for (var j = 0; (j < 4) && (i + j * 0.75 < sigBytes); j++) {
+ base64Chars.push(map.charAt((triplet >>> (6 * (3 - j))) & 0x3f));
+ }
+ }
+
+ // Add padding
+ var paddingChar = map.charAt(64);
+ if (paddingChar) {
+ while (base64Chars.length % 4) {
+ base64Chars.push(paddingChar);
+ }
+ }
+
+ return base64Chars.join('');
+ },
+
+ /**
+ * Converts a Base64 string to a word array.
+ *
+ * @param {string} base64Str The Base64 string.
+ *
+ * @return {WordArray} The word array.
+ *
+ * @static
+ *
+ * @example
+ *
+ * var wordArray = CryptoJS.enc.Base64.parse(base64String);
+ */
+ parse: function (base64Str) {
+ // Shortcuts
+ var base64StrLength = base64Str.length;
+ var map = this._map;
+
+ // Ignore padding
+ var paddingChar = map.charAt(64);
+ if (paddingChar) {
+ var paddingIndex = base64Str.indexOf(paddingChar);
+ if (paddingIndex != -1) {
+ base64StrLength = paddingIndex;
+ }
+ }
+
+ // Convert
+ var words = [];
+ var nBytes = 0;
+ for (var i = 0; i < base64StrLength; i++) {
+ if (i % 4) {
+ var bits1 = map.indexOf(base64Str.charAt(i - 1)) << ((i % 4) * 2);
+ var bits2 = map.indexOf(base64Str.charAt(i)) >>> (6 - (i % 4) * 2);
+ words[nBytes >>> 2] |= (bits1 | bits2) << (24 - (nBytes % 4) * 8);
+ nBytes++;
+ }
+ }
+
+ return WordArray.create(words, nBytes);
+ },
+
+ _map: 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='
+ };
+}());