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#
# Copyright (C) 2018 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the 'License');
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an 'AS IS' BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import argparse
import logging
class ConsoleArgumentError(Exception):
"""Raised when the console fails to parse commands."""
pass
class ConsoleArgumentParser(argparse.ArgumentParser):
"""The argument parser for a console command."""
def __init__(self, command_name, description):
"""Initializes the ArgumentParser without --help option.
Args:
command_name: A string, the first argument of the command.
description: The help message about the command.
"""
super(ConsoleArgumentParser, self).__init__(
prog=command_name, description=description, add_help=False)
def ParseLine(self, line):
"""Parses a command line.
Args:
line: A string, the command line.
Returns:
An argparse.Namespace object.
"""
return self.parse_args(line.split())
# @Override
def error(self, message):
"""Raises an exception when failing to parse the command.
Args:
message: The error message.
Raises:
ConsoleArgumentError.
"""
raise ConsoleArgumentError(message)
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