43 lines
1.4 KiB
Python
43 lines
1.4 KiB
Python
# Copyright 2012 Red Hat, Inc.
|
|
#
|
|
# 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.
|
|
|
|
|
|
def add_arg(func, *args, **kwargs):
|
|
"""Bind CLI arguments to a shell.py `do_foo` function."""
|
|
|
|
if not hasattr(func, 'arguments'):
|
|
func.arguments = []
|
|
|
|
# NOTE(sirp): avoid dups that can occur when the module is shared across
|
|
# tests.
|
|
if (args, kwargs) not in func.arguments:
|
|
# Because of the semantics of decorator composition if we just append
|
|
# to the options list positional options will appear to be backwards.
|
|
func.arguments.insert(0, (args, kwargs))
|
|
|
|
|
|
def arg(*args, **kwargs):
|
|
"""Decorator for CLI args.
|
|
|
|
Example:
|
|
|
|
>>> @arg("name", help="Name of the new entity")
|
|
... def entity_create(args):
|
|
... pass
|
|
"""
|
|
def _decorator(func):
|
|
add_arg(func, *args, **kwargs)
|
|
return func
|
|
return _decorator
|