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# -*- coding: utf-8 -*-
#
# Copyright (C) 2007 Lukáš Lalinský <lalinsky@gmail.com>
# Copyright (C) 2007,2009 Alexander Belchenko <bialix@ukr.net>
# Copyright (C) 2011 Canonical Ltd
#
# 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
# This module is copied from Bazaar Explorer and modified for bzr.
"""i18n and l10n support for Bazaar."""
from __future__ import absolute_import
import gettext as _gettext
import os
import sys
_translations = None
def gettext(message):
"""Translate message.
:returns: translated message as unicode.
"""
install()
return _translations.ugettext(message)
def ngettext(singular, plural, number):
"""Translate message with plural forms based on `number`.
:param singular: English language message in singular form
:param plural: English language message in plural form
:param number: the number this message should be translated for
:returns: translated message as unicode.
"""
install()
return _translations.ungettext(singular, plural, number)
def N_(msg):
"""Mark message for translation but don't translate it right away."""
return msg
def gettext_per_paragraph(message):
"""Translate message per paragraph.
:returns: concatenated translated message as unicode.
"""
install()
paragraphs = message.split(u'\n\n')
ugettext = _translations.ugettext
# Be careful not to translate the empty string -- it holds the
# meta data of the .po file.
return u'\n\n'.join(ugettext(p) if p else u'' for p in paragraphs)
def disable_i18n():
"""Do not allow i18n to be enabled. Useful for third party users
of bzrlib."""
global _translations
_translations = _gettext.NullTranslations()
def installed():
"""Returns whether translations are in use or not."""
return _translations is not None
def install(lang=None):
"""Enables gettext translations in bzr."""
global _translations
if installed():
return
_translations = install_translations(lang)
def install_translations(lang=None, domain='bzr', locale_base=None):
"""Create a gettext translation object.
:param lang: language to install.
:param domain: translation domain to install.
:param locale_base: plugins can specify their own directory.
:returns: a gettext translations object to use
"""
if lang is None:
lang = _get_current_locale()
if lang is not None:
languages = lang.split(':')
else:
languages = None
translation = _gettext.translation(
domain,
localedir=_get_locale_dir(locale_base),
languages=languages,
fallback=True)
return translation
def add_fallback(fallback):
"""
Add a fallback translations object. Typically used by plugins.
:param fallback: gettext.GNUTranslations object
"""
install()
_translations.add_fallback(fallback)
def uninstall():
"""Disables gettext translations."""
global _translations
_translations = None
def _get_locale_dir(base):
"""Returns directory to find .mo translations file in, either local or system
:param base: plugins can specify their own local directory
"""
fs_enc = sys.getfilesystemencoding()
if getattr(sys, 'frozen', False):
if base is None:
base = os.path.dirname(unicode(sys.executable, fs_enc))
return os.path.join(base, u'locale')
else:
if base is None:
base = os.path.dirname(unicode(__file__, fs_enc))
dirpath = os.path.realpath(os.path.join(base, u'locale'))
if os.path.exists(dirpath):
return dirpath
return os.path.join(unicode(sys.prefix, fs_enc), u"share", u"locale")
def _check_win32_locale():
for i in ('LANGUAGE','LC_ALL','LC_MESSAGES','LANG'):
if os.environ.get(i):
break
else:
lang = None
import locale
try:
import ctypes
except ImportError:
# use only user's default locale
lang = locale.getdefaultlocale()[0]
else:
# using ctypes to determine all locales
lcid_user = ctypes.windll.kernel32.GetUserDefaultLCID()
lcid_system = ctypes.windll.kernel32.GetSystemDefaultLCID()
if lcid_user != lcid_system:
lcid = [lcid_user, lcid_system]
else:
lcid = [lcid_user]
lang = [locale.windows_locale.get(i) for i in lcid]
lang = ':'.join([i for i in lang if i])
# set lang code for gettext
if lang:
os.environ['LANGUAGE'] = lang
def _get_current_locale():
if not os.environ.get('LANGUAGE'):
from bzrlib import config
lang = config.GlobalStack().get('language')
if lang:
os.environ['LANGUAGE'] = lang
return lang
if sys.platform == 'win32':
_check_win32_locale()
for i in ('LANGUAGE','LC_ALL','LC_MESSAGES','LANG'):
lang = os.environ.get(i)
if lang:
return lang
return None
def load_plugin_translations(domain):
"""Load the translations for a specific plugin.
:param domain: Gettext domain name (usually 'bzr-PLUGINNAME')
"""
locale_base = os.path.dirname(
unicode(__file__, sys.getfilesystemencoding()))
translation = install_translations(domain=domain,
locale_base=locale_base)
add_fallback(translation)
return translation
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