streaming data into QC with Structure from File (File Tools)

- (BOOL)execute:(QCOpenGLContext *)context time:(double)time arguments:(NSDictionary *)arguments
{
   if([inputSignal wasUpdated] && [inputSignal booleanValue] && [[inputFile stringValue] length] > 0)
   {
      NSString *path = [inputFile stringValue];
 
      // is it an absolute path?  if so, don't do anything
      if([path characterAtIndex:0] != '/')
      {
         if([path characterAtIndex:0] != '~')
         {
            // not absolute and not ~-ified, must be composition relative
            NSDictionary *options = [self _getUserInfo:@".options"];
            NSURL *url = [options objectForKey:@"compositionURL"];
            path = [[[url path] stringByDeletingLastPathComponent] stringByAppendingPathComponent:path];
         }
         else    // it is a ~ directory, expand it
            path = [path stringByExpandingTildeInPath];
      }
 
      NSData *fileData = [[NSData alloc] initWithContentsOfFile:path];
 
      if(fileData)
      {
         NSString *error;
         NSDictionary *fileDict = [NSPropertyListSerialization 
                              propertyListFromData: fileData
                              mutabilityOption: NSPropertyListImmutable
                              format: NULL
                              errorDescription: &error];
         if(error != nil)
         {
            [outputStructure setStructureValue:nil];
            NSLog(@"Error unserializing file: %@",error);
            [error release];
         }
         else
         {
            QCStructure *structure = [[QCStructure alloc] initWithDictionary:fileDict];//[self arrayToStructure:fileArray];
            [outputStructure setStructureValue: structure];
            [structure release];
         }
      }
   }
 
   return YES;
}