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Diffstat (limited to 'rel/overlay/var/share/www/script/base64.js')
-rw-r--r-- | rel/overlay/var/share/www/script/base64.js | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/rel/overlay/var/share/www/script/base64.js b/rel/overlay/var/share/www/script/base64.js new file mode 100644 index 00000000..e0aab303 --- /dev/null +++ b/rel/overlay/var/share/www/script/base64.js @@ -0,0 +1,124 @@ +/* Copyright (C) 1999 Masanao Izumo <iz@onicos.co.jp> + * Version: 1.0 + * LastModified: Dec 25 1999 + * This library is free. You can redistribute it and/or modify it. + */ + /* Modified by Chris Anderson to not use CommonJS */ + /* Modified by Dan Webb not to require Narwhal's binary library */ + +var Base64 = {}; +(function(exports) { + + var encodeChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; + var decodeChars = [ + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, + 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, + -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, + 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, + -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, + 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1 + ]; + + exports.encode = function (str) { + var out, i, length; + var c1, c2, c3; + + length = len(str); + i = 0; + out = []; + while(i < length) { + c1 = str.charCodeAt(i++) & 0xff; + if(i == length) + { + out.push(encodeChars.charCodeAt(c1 >> 2)); + out.push(encodeChars.charCodeAt((c1 & 0x3) << 4)); + out.push("=".charCodeAt(0)); + out.push("=".charCodeAt(0)); + break; + } + c2 = str.charCodeAt(i++); + if(i == length) + { + out.push(encodeChars.charCodeAt(c1 >> 2)); + out.push(encodeChars.charCodeAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4))); + out.push(encodeChars.charCodeAt((c2 & 0xF) << 2)); + out.push("=".charCodeAt(0)); + break; + } + c3 = str.charCodeAt(i++); + out.push(encodeChars.charCodeAt(c1 >> 2)); + out.push(encodeChars.charCodeAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4))); + out.push(encodeChars.charCodeAt(((c2 & 0xF) << 2) | ((c3 & 0xC0) >>6))); + out.push(encodeChars.charCodeAt(c3 & 0x3F)); + } + + var str = ""; + out.forEach(function(chr) { str += String.fromCharCode(chr) }); + return str; + }; + + exports.decode = function (str) { + var c1, c2, c3, c4; + var i, length, out; + + length = len(str); + i = 0; + out = []; + while(i < length) { + /* c1 */ + do { + c1 = decodeChars[str.charCodeAt(i++) & 0xff]; + } while(i < length && c1 == -1); + if(c1 == -1) + break; + + /* c2 */ + do { + c2 = decodeChars[str.charCodeAt(i++) & 0xff]; + } while(i < length && c2 == -1); + if(c2 == -1) + break; + + out.push(String.fromCharCode((c1 << 2) | ((c2 & 0x30) >> 4))); + + /* c3 */ + do { + c3 = str.charCodeAt(i++) & 0xff; + if(c3 == 61) + return out.join(''); + c3 = decodeChars[c3]; + } while(i < length && c3 == -1); + if(c3 == -1) + break; + + out.push(String.fromCharCode(((c2 & 0xF) << 4) | ((c3 & 0x3C) >> 2))); + + /* c4 */ + do { + c4 = str.charCodeAt(i++) & 0xff; + if(c4 == 61) + return out.join(''); + c4 = decodeChars[c4]; + } while(i < length && c4 == -1); + + if(c4 == -1) + break; + + out.push(String.fromCharCode(((c3 & 0x03) << 6) | c4)); + } + + return out.join(''); + }; + + var len = function (object) { + if (object.length !== undefined) { + return object.length; + } else if (object.getLength !== undefined) { + return object.getLength(); + } else { + return undefined; + } + }; +})(Base64); |