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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;
/**
* UTF-16 BE encoding strategy.
*/
var Utf16BE = C_enc.Utf16 = C_enc.Utf16BE = {
/**
* Converts a word array to a UTF-16 BE string.
*
* @param {WordArray} wordArray The word array.
*
* @return {string} The UTF-16 BE string.
*
* @static
*
* @example
*
* var utf16String = CryptoJS.enc.Utf16.stringify(wordArray);
*/
stringify: function (wordArray) {
// Shortcuts
var words = wordArray.words;
var sigBytes = wordArray.sigBytes;
// Convert
var utf16Chars = [];
for (var i = 0; i < sigBytes; i += 2) {
var codePoint = (words[i >>> 2] >>> (16 - (i % 4) * 8)) & 0xffff;
utf16Chars.push(String.fromCharCode(codePoint));
}
return utf16Chars.join('');
},
/**
* Converts a UTF-16 BE string to a word array.
*
* @param {string} utf16Str The UTF-16 BE string.
*
* @return {WordArray} The word array.
*
* @static
*
* @example
*
* var wordArray = CryptoJS.enc.Utf16.parse(utf16String);
*/
parse: function (utf16Str) {
// Shortcut
var utf16StrLength = utf16Str.length;
// Convert
var words = [];
for (var i = 0; i < utf16StrLength; i++) {
words[i >>> 1] |= utf16Str.charCodeAt(i) << (16 - (i % 2) * 16);
}
return WordArray.create(words, utf16StrLength * 2);
}
};
/**
* UTF-16 LE encoding strategy.
*/
C_enc.Utf16LE = {
/**
* Converts a word array to a UTF-16 LE string.
*
* @param {WordArray} wordArray The word array.
*
* @return {string} The UTF-16 LE string.
*
* @static
*
* @example
*
* var utf16Str = CryptoJS.enc.Utf16LE.stringify(wordArray);
*/
stringify: function (wordArray) {
// Shortcuts
var words = wordArray.words;
var sigBytes = wordArray.sigBytes;
// Convert
var utf16Chars = [];
for (var i = 0; i < sigBytes; i += 2) {
var codePoint = swapEndian((words[i >>> 2] >>> (16 - (i % 4) * 8)) & 0xffff);
utf16Chars.push(String.fromCharCode(codePoint));
}
return utf16Chars.join('');
},
/**
* Converts a UTF-16 LE string to a word array.
*
* @param {string} utf16Str The UTF-16 LE string.
*
* @return {WordArray} The word array.
*
* @static
*
* @example
*
* var wordArray = CryptoJS.enc.Utf16LE.parse(utf16Str);
*/
parse: function (utf16Str) {
// Shortcut
var utf16StrLength = utf16Str.length;
// Convert
var words = [];
for (var i = 0; i < utf16StrLength; i++) {
words[i >>> 1] |= swapEndian(utf16Str.charCodeAt(i) << (16 - (i % 2) * 16));
}
return WordArray.create(words, utf16StrLength * 2);
}
};
function swapEndian(word) {
return ((word << 8) & 0xff00ff00) | ((word >>> 8) & 0x00ff00ff);
}
}());
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