##############################################################################
#
# Copyright (c) 2001, 2002 Zope Corporation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
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"""This module handles the 'i18n' namespace directives.

$Id: zcml.py 67630 2006-04-27 00:54:03Z jim $
"""
__docformat__ = 'restructuredtext'

import os

from zope.interface import Interface
from zope.configuration.fields import Path
from zope.i18n.gettextmessagecatalog import GettextMessageCatalog
from zope.i18n.testmessagecatalog import TestMessageCatalog
from zope.i18n.translationdomain import TranslationDomain
from zope.i18n.interfaces import ITranslationDomain
from zope.component.zcml import utility

class IRegisterTranslationsDirective(Interface):
    """Register translations with the global site manager."""

    directory = Path(
        title=u"Directory",
        description=u"Directory containing the translations",
        required=True
        )

def registerTranslations(_context, directory):
    path = os.path.normpath(directory)
    domains = {}

    # Gettext has the domain-specific catalogs inside the language directory,
    # which is exactly the opposite as we need it. So create a dictionary that
    # reverses the nesting.
    for language in os.listdir(path):
        lc_messages_path = os.path.join(path, language, 'LC_MESSAGES')
        if os.path.isdir(lc_messages_path):
            for domain_file in os.listdir(lc_messages_path):
                if domain_file.endswith('.mo'):
                    domain_path = os.path.join(lc_messages_path, domain_file)
                    domain = domain_file[:-3]
                    if not domain in domains:
                        domains[domain] = {}
                    domains[domain][language] = domain_path

    # Now create TranslationDomain objects and add them as utilities
    for name, langs in domains.items():
        domain = TranslationDomain(name)

        for lang, file in langs.items():
            domain.addCatalog(GettextMessageCatalog(lang, name, file))

        # make sure we have a TEST catalog for each domain:
        domain.addCatalog(TestMessageCatalog(name))

        utility(_context, ITranslationDomain, domain, name=name)