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# Copyright (C) 2008 by the Free Software Foundation, Inc.
#
# This file is part of GNU Mailman.
#
# GNU Mailman is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option)
# any later version.
#
# GNU Mailman is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along with
# GNU Mailman. If not, see <http://www.gnu.org/licenses/>.
"""Configuration helpers."""
__metaclass__ = type
__all__ = [
'as_boolean',
'as_log_level',
]
import logging
# XXX BAW 20-Dec-2008 Donate these back to the lazr.config project.
def as_boolean(value):
"""Turn a string into a boolean.
:param value: A string with one of the following values
(case-insensitive): true, yes, 1, on, enable, enabled (for True), or
false, no, 0, off, disable, disabled (for False). Everything else is
an error.
:type value: string
:return: True or False.
:rtype: boolean
"""
value = value.lower()
if value in ('true', 'yes', '1', 'on', 'enabled', 'enable'):
return True
if value in ('false', 'no', '0', 'off', 'disabled', 'disable'):
return False
raise ValueError('Invalid boolean value: %s' % value)
def as_log_level(value):
"""Turn a string into a log level.
:param value: A string with a value (case-insensitive) equal to one of the
symbolic logging levels.
:type value: string
:return: A logging level constant.
:rtype: int
"""
value = value.upper()
return getattr(logging, value)
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