Source code for zope.i18n.gettextmessagecatalog

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#
# Copyright (c) 2001, 2002 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
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"""A simple implementation of a Message Catalog.
"""

from gettext import GNUTranslations
from zope.i18n.interfaces import IGlobalMessageCatalog
from zope.interface import implementer


class _KeyErrorRaisingFallback(object):
    def ugettext(self, message):
        raise KeyError(message)
    gettext = ugettext


[docs]@implementer(IGlobalMessageCatalog) class GettextMessageCatalog(object): """A message catalog based on GNU gettext and Python's gettext module.""" _catalog = None def __init__(self, language, domain, path_to_file): """Initialize the message catalog""" self.language = language.decode('utf-8') if isinstance(language, bytes) else language self.domain = domain.decode("utf-8") if isinstance(domain, bytes) else domain self._path_to_file = path_to_file self.reload() catalog = self._catalog catalog.add_fallback(_KeyErrorRaisingFallback()) self._gettext = catalog.gettext if str is not bytes else catalog.ugettext
[docs] def reload(self): 'See IMessageCatalog' with open(self._path_to_file, 'rb') as fp: self._catalog = GNUTranslations(fp)
[docs] def getMessage(self, id): 'See IMessageCatalog' return self._gettext(id)
[docs] def queryMessage(self, id, default=None): 'See IMessageCatalog' try: return self._gettext(id) except KeyError: return default
[docs] def getIdentifier(self): 'See IMessageCatalog' return self._path_to_file