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#
# Copyright (c) 2010 Testrepository Contributors
#
# Licensed under either the Apache License, Version 2.0 or the BSD 3-clause
# license at the users choice. A copy of both licenses are available in the
# project source as Apache-2.0 and BSD. You may not use this file except in
# compliance with one of these two licences.
#
# Unless required by applicable law or agreed to in writing, software
# distributed under these licenses is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# license you chose for the specific language governing permissions and
# limitations under that license.
"""An Argument that looks up a command object."""
from testrepository.arguments import AbstractArgument
from testrepository import commands
class CustomError(ValueError):
def __str__(self):
return self.args[0]
class CommandArgument(AbstractArgument):
"""An argument that looks up a command."""
def _parse_one(self, arg):
try:
return commands._find_command(arg)
except KeyError:
raise CustomError("Could not find command '%s'." % arg)
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