Nickoli Viskouski
New Member
I'm trying to process a json document in javascript. The critical part is that the Json document has a section carrying base64 encoded xml data.if I take the base64 encoded data and try to decode them I'll see that the xml tags are trimmed away.For example:I have this base64 string in the json content section\[code\]Jmx0O3RhZyZndDtjb250ZW50Jmx0Oy90YWcmZ3Q7\[/code\]If you try to decode it with every base64 tool you'll get\[code\]<tag>content</tag>\[/code\]Instead, I only get\[code\]content\[/code\]loosing the information from the xml tags. I really need them, any advice?EDIT: you can see the javascript code below:\[code\] var requestUrl = span.html(); var data = http://stackoverflow.com/questions/13704862/JSON.parse(doAjaxGet(requestUrl)); //I get the json document if(data!=null) { var envelope = data.document.envelope[0]; if(envelope!=null) { if(envelope!=null) { var data = envelope.node.applicationData; if(data!=null) { var li_d = ul.find('#data'); encodedData = http://stackoverflow.com/questions/13704862/data.value; li_d.find('span').html(base64.decode(encodedData)); //here the encodeddata are decoded and the Xml tags are trimmed li_d.show(); }\[/code\]and here's the Json\[code\] { "document":{ "envelope":[ { "node":{ "applicationData":{ "value":"PGJpekxvY2F0aW9uPml0LnVuaWZpLmRldC50ZWxlbWF0LmVwY2lzLmRvY3VtZW50LklkZW50aWZpZXJANmRlZWE5NmM8L2JpekxvY2F0aW9uPg==" } } } ] } }\[/code\]in the following I'll include the the library I use to encode/decode, but I think it isn't helpful because if I do the steps:[*]copy the base64 payload form the json[*]paste it in the same js file I use to process the document as follows\[code\]base64.decode('PGJpekxvY2F0aW9uPml0LnVuaWZpLmRldC50ZWxlbWF0LmVwY2lzLmRvY3VtZW50LklkZW50aWZpZXJANmRlZWE5NmM8L2JpekxvY2F0aW9uPg==')\[/code\]the output is correct i.e. I have the xml tag included in the decoded string. So I argue that the problems is related to the fact that I'm decoding something inside a json document.By the way, here's the library\[code\]base64 = { // private property _keyStr : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=", // public method for encoding encode : function (input) { var output = ""; var chr1, chr2, chr3, enc1, enc2, enc3, enc4; var i = 0; input = base64._utf8_encode(input); while (i < input.length) { chr1 = input.charCodeAt(i++); chr2 = input.charCodeAt(i++); chr3 = input.charCodeAt(i++); enc1 = chr1 >> 2; enc2 = ((chr1 & 3) << 4) | (chr2 >> 4); enc3 = ((chr2 & 15) << 2) | (chr3 >> 6); enc4 = chr3 & 63; if (isNaN(chr2)) { enc3 = enc4 = 64; } else if (isNaN(chr3)) { enc4 = 64; } output = output + this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) + this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4); } return output; }, // public method for decoding decode : function (input) { var output = ""; var chr1, chr2, chr3; var enc1, enc2, enc3, enc4; var i = 0; input = input.replace(/[^A-Za-z0-9\+\/\=]/g, ""); while (i < input.length) { enc1 = this._keyStr.indexOf(input.charAt(i++)); enc2 = this._keyStr.indexOf(input.charAt(i++)); enc3 = this._keyStr.indexOf(input.charAt(i++)); enc4 = this._keyStr.indexOf(input.charAt(i++)); chr1 = (enc1 << 2) | (enc2 >> 4); chr2 = ((enc2 & 15) << 4) | (enc3 >> 2); chr3 = ((enc3 & 3) << 6) | enc4; output = output + String.fromCharCode(chr1); if (enc3 != 64) { output = output + String.fromCharCode(chr2); } if (enc4 != 64) { output = output + String.fromCharCode(chr3); } } output = base64._utf8_decode(output); return output; }, // private method for UTF-8 encoding _utf8_encode : function (string) { string = string.replace(/\r\n/g,"\n"); var utftext = ""; for (var n = 0; n < string.length; n++) { var c = string.charCodeAt(n); if (c < 128) { utftext += String.fromCharCode(c); } else if((c > 127) && (c < 2048)) { utftext += String.fromCharCode((c >> 6) | 192); utftext += String.fromCharCode((c & 63) | 128); } else { utftext += String.fromCharCode((c >> 12) | 224); utftext += String.fromCharCode(((c >> 6) & 63) | 128); utftext += String.fromCharCode((c & 63) | 128); } } return utftext; }, // private method for UTF-8 decoding _utf8_decode : function (utftext) { var string = ""; var i = 0; var c = c1 = c2 = 0; while ( i < utftext.length ) { c = utftext.charCodeAt(i); if (c < 128) { string += String.fromCharCode(c); i++; } else if((c > 191) && (c < 224)) { c2 = utftext.charCodeAt(i+1); string += String.fromCharCode(((c & 31) << 6) | (c2 & 63)); i += 2; } else { c2 = utftext.charCodeAt(i+1); c3 = utftext.charCodeAt(i+2); string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63)); i += 3; } } return string; } }\[/code\]