cmd2.py 文件源码

def onecmd_plus_hooks(self, line):
        """Top-level function called by cmdloop() to handle parsing a line and running the command and all of its hooks.

        :param line: str - line of text read from input
        :return: bool - True if cmdloop() should exit, False otherwise
        """
        stop = 0
        try:
            statement = self._complete_statement(line)
            (stop, statement) = self.postparsing_precmd(statement)
            if stop:
                return self.postparsing_postcmd(stop)
            if statement.parsed.command not in self.excludeFromHistory:
                self.history.append(statement.parsed.raw)
            try:
                if self.allow_redirection:
                    self._redirect_output(statement)
                timestart = datetime.datetime.now()
                statement = self.precmd(statement)
                stop = self.onecmd(statement)
                stop = self.postcmd(stop, statement)
                if self.timing:
                    self.pfeedback('Elapsed: %s' % str(datetime.datetime.now() - timestart))
            finally:
                if self.allow_redirection:
                    self._restore_output(statement)
        except EmptyStatement:
            pass
        except ValueError as ex:
            # If shlex.split failed on syntax, let user know whats going on
            self.perror("Invalid syntax: {}".format(ex), traceback_war=False)
        except Exception as ex:
            self.perror(ex, type(ex).__name__)
        finally:
            return self.postparsing_postcmd(stop)