Question

Im using NSXMLParser to dissect a xml package, I m receiving &apos inside the package text.

I have the following defined for the xmlParser:

[xmlParser setShouldResolveExternalEntities: YES];

The following method is never called

- (void)parser:(NSXMLParser *)parser foundExternalEntityDeclarationWithName:(NSString *)entityName publicID:(NSString *)publicID systemID:(NSString *)systemID

The text in the field before the &apos is not considered by the parser.

Im searching how to solve this, any idea???

Thanks in advance Alex

XML package portion attached:

<?xml version="1.0" encoding="ISO-8859-1"?><SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:tns="urn:appwsdl"><SOAP-ENV:Body><ns1:getObjects2Response xmlns:ns1="http://schemas.xmlsoap.org/soap/envelope/"><return xsi:type="tns:objectsResult"><totalRecipes xsi:type="xsd:string">1574</totalObjects><Objects xsi:type="tns:Item"><id xsi:type="xsd:string">4311</id><name xsi:type="xsd:string"> item title 1 </name><procedure xsi:type="xsd:string">item procedure 11......

Answer 1

Here is what I did, after referring a different answer from here. I replaced all the occurrences of the ' in the xml with " " when the data is received from NSURLConnection object. Then I give that data to the parser.

So what I do is:

NSData* parserData = [self resolveHTMLEntities: self.receivedData];
NSXMLParser* parser = [[NSXMLaParser alloc] initwithData:parserData];

Here is the resolveHTMLEntitites method:

NSString *xmlCode = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSMutableString *temp = [NSMutableString stringWithString:xmlCode];

// Replace all the entities
[temp replaceOccurrencesOfString:@"&amp;apos;" withString:@" " options:NSLiteralSearch range:NSMakeRange(0, [temp length])];

NSData *finalData = [temp dataUsingEncoding:NSUTF8StringEncoding];
return finalData;

The catch is that ' gets converted to &apos; thats why we need to replace that occurrence.

Note: No memory management is performed in the above block of code.

Hope this helps.

Answer 2

The standard entities are <, >, &, and ". ' is an html entity reference. Does your XML refer to the XHTML namespace or some other namespace that has ' defined?

(BTW, would be nice to see a small segment of the XML including the header.)

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