runner.py 文件源码

def partition_args(self, all_commands, args):
        name = args[0]

        try:
            command = all_commands[name]
        except KeyError:
            raise RunnerError('Unknown command: {name}'.format(name=name))

        args = args[1:]
        command_args = []
        partition = [command, command_args]

        prev_args = chain([None], args[:-1])
        next_args = chain(args[1:], [None])

        for prev_arg, arg, next_arg in zip(prev_args, args, next_args):
            if arg in all_commands:
                option = command.arg_map.get(prev_arg)
                if option is None or not option.takes_value:
                    break
            if arg.startswith(':') and arg != ':':
                arg = arg[1:]
            command_args.append(arg)

        return partition