def cmd(self, operation):
""" put a mapi command on the line"""
logger.debug("II: executing command %s" % operation)
if self.state != STATE_READY:
raise ProgrammingError
self.__putblock(operation)
response = self.__getblock()
if not len(response):
return ""
elif response.startswith(MSG_OK):
return response[3:].strip() or ""
if response == MSG_MORE:
# tell server it isn't going to get more
return self.cmd("")
if response[0] in [MSG_Q, MSG_HEADER, MSG_TUPLE]:
return response
elif response[0] == MSG_ERROR:
raise OperationalError(response[1:])
else:
raise ProgrammingError("unknown state: %s" % response)
def isempty(result):
""" raises an exception if the result is not empty"""
if result != "":
raise OperationalError(result)
else:
return True