CDATA Parsing Values

I am parsing CDATA but i am gettings the values... and in this both rss feeds i want get src value in tag

- (void)parser:(NSXMLParser *)parser foundCDATA:(NSData *)CDATABlock
 NSString *someString = [[NSString alloc] initWithData:CDATABlock  


This code will print all the jpg image links in the CDATA,

-(void) parser:(NSXMLParser *)parser foundCDATA:(NSData *)CDATABlock{
    NSString *cDataString = [[NSString alloc] initWithData:CDATABlock encoding:NSUTF8StringEncoding];
    NSDataDetector *detect = [[NSDataDetector alloc] initWithTypes:NSTextCheckingTypeLink error:nil];
    NSArray *matches = [detect matchesInString:cDataString options:0 range:NSMakeRange(0, [cDataString length])];

    for(int i=0; i<matches.count;i++){
      NSTextCheckingResult *result = [matches objectAtIndex:i];
      NSString *linkUrl = [result URL].absoluteString;

      if([[linkUrl pathExtension] isEqualToString:@"jpg"]){
      //for your requirement, change the above line to
      //NSString *pathExtension = [linkUrl pathExtension];
      //if((pathExtension.length>=3)&&([[pathExtension substringToIndex:3] isEqualToString:@"jpg"])){
       NSLog(@"image link:%@", linkUrl);
      }else NSLog(@"link:%@", linkUrl);


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