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# Copyright (C) 2007-2010 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/>.
"""Interfaces for managing languages."""
from __future__ import absolute_import, unicode_literals
__metaclass__ = type
__all__ = [
'ILanguage',
'ILanguageManager',
]
from zope.interface import Interface, Attribute
class ILanguage(Interface):
"""The representation of a language."""
code = Attribute('The 2-character language code.')
charset = Attribute('The character set or encoding for this language.')
description = Attribute("The language's description.")
class ILanguageManager(Interface):
"""A language manager.
Current, disabling languages is not supported.
"""
def add(code, charset, description):
"""Teach the language manager about a language.
:param code: The short two-character language code for the
language. If the language manager already knows about this code,
the old language binding is lost.
:type code: string
:param charset: The character set that the language uses,
e.g. 'us-ascii', 'iso-8859-1', or 'utf-8'
:type charset: string
:param description: The English description of the language,
e.g. 'English' or 'French'.
:type description: string
"""
codes = Attribute('An iterator over all known codes.')
languages = Attribute('An iterator of all the languages.')
def __getitem__(code):
"""Return the language associated with the language code.
:param code: The 2-letter language code.
:type code: string
:return: The language instance.
:rtype: `ILanguage`
:raises KeyError: if code is not associated with a known language.
"""
def get(code, default=None):
"""Return the language associated with the language code.
:param code: The 2-letter language code.
:type code: string
:param default: The value to return if the code is not known.
:type default: anything
:return: The language instance or `default`.
:rtype: `ILanguage` or `default`
"""
def __contains__(code):
"""True if the language code is known.
:return: A flag indicating whether the language code is known or not.
:rtype: bool
"""
def clear():
"""Remove all language code mappings."""
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