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# Copyright (C) 2007 by the Free Software Foundation, Inc.
#
# This program 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 2
# of the License, or (at your option) any later version.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
# USA.
"""Interfaces for managing languages."""
from zope.interface import Interface, Attribute
class ILanguageManager(Interface):
"""A language manager.
Current, disabling languages is not supported.
"""
def add_language(code, description, charset, enable=True):
"""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.
:param description: The English description of the language,
e.g. 'English' or 'French'.
:param charset: The character set that the language uses,
e.g. 'us-ascii', 'iso-8859-1', or 'utf-8'
:param enable: Enable the language at the same time.
"""
def enable_language(code):
"""Enable a language that the manager already knows about.
:raises KeyError: when the manager does not know about the given
language code.
"""
def get_description(code):
"""Return the language description for the given code.
:param code: The two letter language code to look up.
:returns: The English description of the language.
:raises KeyError: when the code has not been added.
"""
def get_charset(code):
"""Return the character set for the given code.
:param code: The two letter language code to look up.
:returns: The character set of the language.
:raises KeyError: when the code has not been added.
"""
known_codes = Attribute(
"""An iterator over all known codes.""")
enabled_codes = Attribute(
"""An iterator over all enabled codes.""")
enabled_names = Attribute(
"""An iterator over all enabled language names.""")
class ILanguage(Interface):
"""The representation of a language."""
code = Attribute("""The 2-character language code.""")
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