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# -*- coding: utf-8 -*-
from __future__ import print_function, division, absolute_import
# Copyright (c) 2011 Red Hat, Inc.
#
# This software is licensed to you under the GNU General Public License,
# version 2 (GPLv2). There is NO WARRANTY for this software, express or
# implied, including the implied warranties of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. You should have received a copy of GPLv2
# along with this software; if not, see
# http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
#
# Red Hat trademarks are not licensed under GPLv2. No permission is
# granted to use or replicate Red Hat trademarks that are incorporated
# in this software or its documentation.
#
import gettext
import locale
import logging
from threading import local
import os
import six
# Localization domain:
APP = 'rhsm'
# Directory where translations are deployed:
DIR = '/usr/share/locale/'
TRANSLATION = gettext.translation(APP, fallback=True)
# Save current language using thread safe approach
LOCALE = local()
LOCALE.language = None
LOCALE.lang = None
BLACKLISTED_LOCALES = ['turkish', 'tr_TR', 'tr_CY', 'ku_TR']
log = logging.getLogger(__name__)
def configure_i18n():
"""
Configure internationalization for the application. Should only be
called once per invocation. (once for CLI, once for GUI)
"""
import locale
current_locale = None
try:
current_locale = locale.setlocale(locale.LC_ALL, '')
except locale.Error:
print("You are attempting to use a locale that is not installed.")
os.environ['LC_ALL'] = 'C'
locale.setlocale(locale.LC_ALL, 'C')
# We have to set locale to C for blacklisted locales, because result of str.lower() and str.upper()
# methods is influenced by locale. E.g. character 'I' is not converted to 'i' by lower() for Turkish
# language, but it is converted to 'ı'. Character 'i' is converted to 'İ' by upper(). There other
# strange cases, when tr_TR
# See this BZ: https://bugzilla.redhat.com/show_bug.cgi?id=1703054#c10
if six.PY2 and current_locale is not None:
base_current_locale = current_locale.split('.')[0]
if base_current_locale in BLACKLISTED_LOCALES:
print("You are attempting to use blacklisted locale: %s" % current_locale)
os.environ['LC_ALL'] = 'C'
locale.setlocale(locale.LC_ALL, 'C')
configure_gettext()
# RHBZ 1642271 Don't set a None lang
lang = os.environ.get("LANG")
if lang is not None:
Locale.set(lang)
def configure_gettext():
"""Configure gettext for all RHSM-related code.
Since Glade internally uses gettext, we need to use the C-level bindings in locale to adjust the encoding.
See https://docs.python.org/2/library/locale.html#access-to-message-catalogs
Exposed as its own function so that it can be called safely in the initial-setup case.
"""
gettext.bindtextdomain(APP, DIR)
gettext.textdomain(APP)
gettext.bind_textdomain_codeset(APP, 'UTF-8')
locale.bind_textdomain_codeset(APP, 'UTF-8')
def ugettext(*args, **kwargs):
if six.PY2:
if hasattr(LOCALE, 'lang') and LOCALE.lang is not None:
return LOCALE.lang.ugettext(*args, **kwargs)
else:
return TRANSLATION.ugettext(*args, **kwargs)
else:
if hasattr(LOCALE, 'lang') and LOCALE.lang is not None:
return LOCALE.lang.gettext(*args, **kwargs)
else:
return TRANSLATION.gettext(*args, **kwargs)
def ungettext(*args, **kwargs):
if six.PY2:
if hasattr(LOCALE, 'lang') and LOCALE.lang is not None:
return LOCALE.lang.ungettext(*args, **kwargs)
else:
return TRANSLATION.ungettext(*args, **kwargs)
else:
if hasattr(LOCALE, 'lang') and LOCALE.lang is not None:
return LOCALE.lang.ngettext(*args, **kwargs)
else:
return TRANSLATION.ngettext(*args, **kwargs)
class Locale(object):
"""
Class used for changing languages on the fly
"""
translations = {}
@classmethod
def _find_lang_alternative(cls, language):
"""
Try to find alternative for given language
:param language: string with code of language e.g. de_LU
:return: Instance of gettext.translation and code of new_language
"""
lang = None
new_language = None
# For similar case: 'de'
if '_' not in language:
new_language = language + '_' + language.upper()
# For similar cases: 'de_AT' (Austria), 'de_LU' (Luxembourg)
elif language[0:2] != language[3:5]:
new_language = language[0:2] + '_' + language[0:2].upper() + language[5:]
if new_language is not None:
try:
lang = gettext.translation(APP, DIR, languages=[new_language])
except IOError as err:
log.info('Could not import locale either for %s: %s' % (new_language, err))
new_language = None
else:
log.debug('Using new locale for language: %s' % new_language)
cls.translations[language] = lang
return lang, new_language
@classmethod
def set(cls, language):
"""
Set language used by gettext and ungettext method. This method is
intended for changing language on the fly, because rhsm service can
be used by many users with different language preferences at the
same time.
:param language: String representing locale
(e.g. de, de_DE, de_DE.utf-8, de_DE.UTF-8)
"""
global LOCALE
lang = None
if language != '':
if language in cls.translations.keys():
log.debug('Reusing locale for language: %s' % language)
lang = cls.translations[language]
else:
# Try to find given language
try:
log.debug('Trying to use locale: %s' % language)
lang = gettext.translation(APP, DIR, languages=[language])
except IOError as err:
log.info('Could not import locale for %s: %s' % (language, err))
# When original language was not found, then we will try another
# alternatives.
lang, language = cls._find_lang_alternative(language)
else:
log.debug('Using new locale for language: %s' % language)
cls.translations[language] = lang
LOCALE.language = language
LOCALE.lang = lang