def get_file_chunks_in_range(context, filediff, interfilediff, first_line, num_lines):
 f = get_file_from_filediff(context, filediff, interfilediff)
 if f:
  return get_chunks_in_range(f[u'chunks'], first_line, num_lines)
 else:
  return []

def get_file_chunks_in_range ( context , filediff , interfilediff , first_line , num_lines ) : f = get_file_from_filediff ( context , filediff , interfilediff ) if f : return get_chunks_in_range ( f [ u'chunks' ] , first_line , num_lines ) else : return [ ]
generate the chunks within a range of lines in the specified filediff .