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# Localizer, Zope product that provides internationalization services
# Copyright (C) 2000-2002 Juan David Ibez Palomar <j-david@noos.fr>
# 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
"""
Localizer
This module provides several localized classes, that is, classes with the
locale attribute. Currently it only defines the classes LocalDTMLFile and
LocalPageTemplateFile, which should be used instead of DTMLFile and
PageTemplateFile.
"""
__version__ = "$Revision: 1.4.2.2 $"
import os
from gettext import GNUTranslations
from Globals import DTMLFile, package_home, get_request
from Utils import lang_negotiator
translations = {}
def get_translations(localedir, language=None):
"""
Looks the <language>.mo file in <localedir> and returns a
GNUTranslations instance for it. If <language> is None uses
the language negotiator to guess the user prefered language.
"""
# Initialize the product translations
locale = localedir
if not translations.has_key(locale):
translations[locale] = None
if translations[locale] is None:
translations[locale] = {}
# Load .mo files
for filename in [ x for x in os.listdir(locale) if x.endswith('.mo') ]:
lang = filename[:-3]
filename = os.path.join(locale, filename)
f = open(filename, 'rb')
translations[locale][lang] = GNUTranslations(f)
f.close()
# Get the translations to use
ptranslations = translations[locale]
if language is None:
# Builds the list of available languages
available_languages = ptranslations.keys()
# Get the language!
lang = lang_negotiator(available_languages)
else:
lang = None
return ptranslations.get(lang or language, None)
def gettext(self, message, language=None):
""" """
# Get the translations to use
translations = get_translations(self.locale, language)
if translations is not None:
return translations.ugettext(message)
return message
ugettext = gettext # XXX backwards compatibility
class LocalDTMLFile(DTMLFile):
def __init__(self, name, _prefix=None, **kw):
apply(LocalDTMLFile.inheritedAttribute('__init__'),
(self, name, _prefix), kw)
self.locale = os.path.join(package_home(_prefix), 'locale')
def _exec(self, bound_data, args, kw):
# Add our gettext first
bound_data['gettext'] = self.gettext
bound_data['ugettext'] = self.ugettext # XXX backwards compatibility
return apply(LocalDTMLFile.inheritedAttribute('_exec'),
(self, bound_data, args, kw))
gettext = gettext
ugettext = ugettext # XXX backwards compatibility
# Zope Page Templates (ZPT)
try:
from Products.PageTemplates.PageTemplateFile import PageTemplateFile
except ImportError:
# If ZPT is not installed
class LocalPageTemplateFile:
pass
else:
class LocalPageTemplateFile(PageTemplateFile):
def __init__(self, name, _prefix=None, **kw):
apply(LocalPageTemplateFile.inheritedAttribute('__init__'),
(self, name, _prefix), kw)
self.locale = os.path.join(package_home(_prefix), 'locale')
def _exec(self, bound_data, args, kw):
# Add our gettext first
bound_data['gettext'] = self.gettext
bound_data['ugettext'] = self.ugettext # XXX backwards compatibility
return apply(LocalPageTemplateFile.inheritedAttribute('_exec'),
(self, bound_data, args, kw))
gettext = gettext
ugettext = ugettext # XXX backwards compatibility
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