def _split_proto_line(line, allowed):
 if (not line):
  fields = [None]
 else:
  fields = line.rstrip('\n').split(' ', 1)
 command = fields[0]
 if ((allowed is not None) and (command not in allowed)):
  raise UnexpectedCommandError(command)
 if ((len(fields) == 1) and (command in (COMMAND_DONE, None))):
  return (command, None)
 elif (len(fields) == 2):
  if (command in (COMMAND_WANT, COMMAND_HAVE, COMMAND_SHALLOW, COMMAND_UNSHALLOW)):
   if (not valid_hexsha(fields[1])):
    raise GitProtocolError('Invalid sha')
   return tuple(fields)
  elif (command == COMMAND_DEEPEN):
   return (command, int(fields[1]))
 raise GitProtocolError(('Received invalid line from client: %r' % line))

def _split_proto_line ( line , allowed ) : if ( not line ) : fields = [ None ] else : fields = line . rstrip ( '\n' ) . split ( ' ' , 1 ) command = fields [ 0 ] if ( ( allowed is not None ) and ( command not in allowed ) ) : raise UnexpectedCommandError ( command ) if ( ( len ( fields ) == 1 ) and ( command in ( COMMAND_DONE , None ) ) ) : return ( command , None ) elif ( len ( fields ) == 2 ) : if ( command in ( COMMAND_WANT , COMMAND_HAVE , COMMAND_SHALLOW , COMMAND_UNSHALLOW ) ) : if ( not valid_hexsha ( fields [ 1 ] ) ) : raise GitProtocolError ( 'Invalid sha' ) return tuple ( fields ) elif ( command == COMMAND_DEEPEN ) : return ( command , int ( fields [ 1 ] ) ) raise GitProtocolError ( ( 'Received invalid line from client: %r' % line ) )
split a line read from the wire .