iPhone: How do I "cancel" my xmlparser from parsing in objective c?

Question

In my

- (void)parser:(NSXMLParser *)parser
        didStartElement:(NSString *)elementName
           namespaceURI:(NSString *)namespaceURI
          qualifiedName:(NSString *)qualifiedName
             attributes:(NSDictionary *)attributeDict {
          // ...
}

I check to see if one of my XML attributes is equal to a value I store in my plist. If it's not then I want it to execute normally and get the latest information. If it is the same value though I don't want to waste the processing time of getting all the data again. So if I have code like below how can I terminate the parsing process if the values are the same?

if (lastUpdated == [attributeDict valueForKey:@"last_updated"]) {
     // Terminate the xml parsing because data is up to date
}

jrturton · Accepted Answer · 2012-07-15T22:25:13.377

3

You can use [parser abortParsing] but note that this is intended for XML errors rather than "I don't want this data" situations and can cause your parser:parseErrorOcurred: method to be called a couple of times, in my experience.

edited Jul 15 '12 at 22:25

answered Jul 13 '12 at 17:05

jrturton

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I don't think it's `parser:didFailWithError` I believe its `parser:parseErrorOccurred` ... at least that's what I'm using I couldn't find a reference to `parser:didFailWithError` – daveomcd Jul 15 '12 at 21:01

score 1 · Answer 2 · answered Jul 13 '12 at 17:06

1

Call [parser abortParsing] to cancel parsing from current point.

answered Jul 13 '12 at 17:06

Apurv

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score 1 · Answer 3 · answered Oct 09 '12 at 08:48

1

Just note that there is a bug in iOS 6.0 and abortParsing will cancel the parser but will not call parser:parseErrorOccurred and will not set 'parserError'.

answered Oct 09 '12 at 08:48

Plamen Terziev

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iPhone: How do I "cancel" my xmlparser from parsing in objective c?

3 Answers3