diff -r 902822492a68 -r fe660c52c48f includes/clientside/static/base64.js --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/includes/clientside/static/base64.js Wed Jun 13 16:07:17 2007 -0400 @@ -0,0 +1,113 @@ +// Base64 encoder/decoder - pulled from http://ostermiller.org/calc/encode.html. Licensed under the GPL. + +var END_OF_INPUT = -1; + +var base64Chars = new Array( + 'A','B','C','D','E','F','G','H', + 'I','J','K','L','M','N','O','P', + 'Q','R','S','T','U','V','W','X', + 'Y','Z','a','b','c','d','e','f', + 'g','h','i','j','k','l','m','n', + 'o','p','q','r','s','t','u','v', + 'w','x','y','z','0','1','2','3', + '4','5','6','7','8','9','+','/' +); + +var reverseBase64Chars = new Array(); +for (var i=0; i < base64Chars.length; i++){ + reverseBase64Chars[base64Chars[i]] = i; +} + +var base64Str; +var base64Count; + +function setBase64Str(str){ + base64Str = str; + base64Count = 0; +} +function readBase64(){ + if (!base64Str) return END_OF_INPUT; + if (base64Count >= base64Str.length) return END_OF_INPUT; + var c = base64Str.charCodeAt(base64Count) & 0xff; + base64Count++; + return c; +} +function encodeBase64(str){ + setBase64Str(str); + var result = ''; + var inBuffer = new Array(3); + var lineCount = 0; + var done = false; + while (!done && (inBuffer[0] = readBase64()) != END_OF_INPUT){ + inBuffer[1] = readBase64(); + inBuffer[2] = readBase64(); + result += (base64Chars[ inBuffer[0] >> 2 ]); + if (inBuffer[1] != END_OF_INPUT){ + result += (base64Chars [(( inBuffer[0] << 4 ) & 0x30) | (inBuffer[1] >> 4) ]); + if (inBuffer[2] != END_OF_INPUT){ + result += (base64Chars [((inBuffer[1] << 2) & 0x3c) | (inBuffer[2] >> 6) ]); + result += (base64Chars [inBuffer[2] & 0x3F]); + } else { + result += (base64Chars [((inBuffer[1] << 2) & 0x3c)]); + result += ('='); + done = true; + } + } else { + result += (base64Chars [(( inBuffer[0] << 4 ) & 0x30)]); + result += ('='); + result += ('='); + done = true; + } + lineCount += 4; + if (lineCount >= 76){ + result += ('\n'); + lineCount = 0; + } + } + return result; +} +function readReverseBase64(){ + if (!base64Str) return END_OF_INPUT; + while (true){ + if (base64Count >= base64Str.length) return END_OF_INPUT; + var nextCharacter = base64Str.charAt(base64Count); + base64Count++; + if (reverseBase64Chars[nextCharacter]){ + return reverseBase64Chars[nextCharacter]; + } + if (nextCharacter == 'A') return 0; + } + return END_OF_INPUT; +} + +function ntos(n){ + n=n.toString(16); + if (n.length == 1) n="0"+n; + n="%"+n; + return unescape(n); +} + +function decodeBase64(str){ + setBase64Str(str); + var result = ""; + var inBuffer = new Array(4); + var done = false; + while (!done && (inBuffer[0] = readReverseBase64()) != END_OF_INPUT + && (inBuffer[1] = readReverseBase64()) != END_OF_INPUT){ + inBuffer[2] = readReverseBase64(); + inBuffer[3] = readReverseBase64(); + result += ntos((((inBuffer[0] << 2) & 0xff)| inBuffer[1] >> 4)); + if (inBuffer[2] != END_OF_INPUT){ + result += ntos((((inBuffer[1] << 4) & 0xff)| inBuffer[2] >> 2)); + if (inBuffer[3] != END_OF_INPUT){ + result += ntos((((inBuffer[2] << 6) & 0xff) | inBuffer[3])); + } else { + done = true; + } + } else { + done = true; + } + } + return result; +} +