Parse XML before loading into NSMutableDictionary

tmoney11 · April 2010

I'm not sure exactly if this is possible but I wanted to see if anybody can point me in the right direction.

So I'm using MGTwitterEngine and I want the XML parser to only add status messages that have a particular phrase or trend (#music). This way only statuses that contain that phrase are actually added to the Dictionary.

Here is the MGTwitterStatusesParser code:


- (void)parser:(NSXMLParser *)theParser didStartElement:(NSString *)elementName 
  namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName 
    attributes:(NSDictionary *)attributeDict
{
  //  NSLog(@\"Started element: %@ (%@)\", elementName, attributeDict);
    [self setLastOpenedElement:elementName];
    
    if ([elementName isEqualToString:@\"status\"]) {
        // Make new entry in parsedObjects.
        NSMutableDictionary *newNode = [NSMutableDictionary dictionaryWithCapacity:0];
        [parsedObjects addObject:newNode];
		currentNode = newNode;
		
    } else if ([elementName isEqualToString:@\"user\"]) {
        // Add a 'user' dictionary to current node.
        NSMutableDictionary *newNode = [NSMutableDictionary dictionaryWithCapacity:0];
        [currentNode setObject:newNode forKey:elementName];
        currentNode = newNode;
    } else if (currentNode) {
        // Create relevant name-value pair.
        [currentNode setObject:[NSMutableString string] forKey:elementName];
    }
}

Would I use Regex to parse the information before it adds the object? Or can the XML parser go one step further and parse that phrase before it's added?

Thanks!

Benoit Caccinolo · December 2010

To easily convert XML to NSDictionary, here is a little lib to do this conversion:

XML to NSDictionary Converter bcaccinolo's blog

The code is on Github.

Cheers,

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Parse XML before loading into NSMutableDictionary

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