corrade-http-templates – Blame information for rev 15

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15 eva 1 /*!
2 * jquery.base64.js 0.1 - https://github.com/yckart/jquery.base64.js
3 * Makes Base64 en & -decoding simpler as it is.
4 *
5 * Based upon: https://gist.github.com/Yaffle/1284012
6 *
7 * Copyright (c) 2012 Yannick Albert (http://yckart.com)
8 * Licensed under the MIT license (http://www.opensource.org/licenses/mit-license.php).
9 * 2013/02/10
10 **/
11 ;(function($) {
12  
13 var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",
14 a256 = '',
15 r64 = [256],
16 r256 = [256],
17 i = 0;
18  
19 var UTF8 = {
20  
21 /**
22 * Encode multi-byte Unicode string into utf-8 multiple single-byte characters
23 * (BMP / basic multilingual plane only)
24 *
25 * Chars in range U+0080 - U+07FF are encoded in 2 chars, U+0800 - U+FFFF in 3 chars
26 *
27 * @param {String} strUni Unicode string to be encoded as UTF-8
28 * @returns {String} encoded string
29 */
30 encode: function(strUni) {
31 // use regular expressions & String.replace callback function for better efficiency
32 // than procedural approaches
33 var strUtf = strUni.replace(/[\u0080-\u07ff]/g, // U+0080 - U+07FF => 2 bytes 110yyyyy, 10zzzzzz
34 function(c) {
35 var cc = c.charCodeAt(0);
36 return String.fromCharCode(0xc0 | cc >> 6, 0x80 | cc & 0x3f);
37 })
38 .replace(/[\u0800-\uffff]/g, // U+0800 - U+FFFF => 3 bytes 1110xxxx, 10yyyyyy, 10zzzzzz
39 function(c) {
40 var cc = c.charCodeAt(0);
41 return String.fromCharCode(0xe0 | cc >> 12, 0x80 | cc >> 6 & 0x3F, 0x80 | cc & 0x3f);
42 });
43 return strUtf;
44 },
45  
46 /**
47 * Decode utf-8 encoded string back into multi-byte Unicode characters
48 *
49 * @param {String} strUtf UTF-8 string to be decoded back to Unicode
50 * @returns {String} decoded string
51 */
52 decode: function(strUtf) {
53 // note: decode 3-byte chars first as decoded 2-byte strings could appear to be 3-byte char!
54 var strUni = strUtf.replace(/[\u00e0-\u00ef][\u0080-\u00bf][\u0080-\u00bf]/g, // 3-byte chars
55 function(c) { // (note parentheses for precence)
56 var cc = ((c.charCodeAt(0) & 0x0f) << 12) | ((c.charCodeAt(1) & 0x3f) << 6) | (c.charCodeAt(2) & 0x3f);
57 return String.fromCharCode(cc);
58 })
59 .replace(/[\u00c0-\u00df][\u0080-\u00bf]/g, // 2-byte chars
60 function(c) { // (note parentheses for precence)
61 var cc = (c.charCodeAt(0) & 0x1f) << 6 | c.charCodeAt(1) & 0x3f;
62 return String.fromCharCode(cc);
63 });
64 return strUni;
65 }
66 };
67  
68 while(i < 256) {
69 var c = String.fromCharCode(i);
70 a256 += c;
71 r256[i] = i;
72 r64[i] = b64.indexOf(c);
73 ++i;
74 }
75  
76 function code(s, discard, alpha, beta, w1, w2) {
77 s = String(s);
78 var buffer = 0,
79 i = 0,
80 length = s.length,
81 result = '',
82 bitsInBuffer = 0;
83  
84 while(i < length) {
85 var c = s.charCodeAt(i);
86 c = c < 256 ? alpha[c] : -1;
87  
88 buffer = (buffer << w1) + c;
89 bitsInBuffer += w1;
90  
91 while(bitsInBuffer >= w2) {
92 bitsInBuffer -= w2;
93 var tmp = buffer >> bitsInBuffer;
94 result += beta.charAt(tmp);
95 buffer ^= tmp << bitsInBuffer;
96 }
97 ++i;
98 }
99 if(!discard && bitsInBuffer > 0) result += beta.charAt(buffer << (w2 - bitsInBuffer));
100 return result;
101 }
102  
103 var Plugin = $.base64 = function(dir, input, encode) {
104 return input ? Plugin[dir](input, encode) : dir ? null : this;
105 };
106  
107 Plugin.btoa = Plugin.encode = function(plain, utf8encode) {
108 plain = Plugin.raw === false || Plugin.utf8encode || utf8encode ? UTF8.encode(plain) : plain;
109 plain = code(plain, false, r256, b64, 8, 6);
110 return plain + '===='.slice((plain.length % 4) || 4);
111 };
112  
113 Plugin.atob = Plugin.decode = function(coded, utf8decode) {
114 coded = String(coded).split('=');
115 var i = coded.length;
116 do {--i;
117 coded[i] = code(coded[i], true, r64, a256, 6, 8);
118 } while (i > 0);
119 coded = coded.join('');
120 return Plugin.raw === false || Plugin.utf8decode || utf8decode ? UTF8.decode(coded) : coded;
121 };
122 }(jQuery));