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# Copyright (c) 2006, 2007, 2010 Alexander Belchenko
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
"""Helper for standard gettext.py on Windows.
Module obtains user language code on Windows to use with standard
Python gettext.py library.
The module provides 2 functions: setup_env and get_language.
You may use setup_env before initializing gettext functions.
Or you can use get_language to get the list of language codes suitable
to pass them to gettext.find or gettext.translation function.
Usage example #1:
import gettext, gettext_windows
gettext_windows.setup_env()
gettext.install('myapp')
Usage example #2:
import gettext, gettext_windows
lang = gettext_windows.get_language()
translation = gettext.translation('myapp', languages=lang)
_ = translation.gettext
"""
import locale
import os
import sys
OS_WINDOWS = (sys.platform == 'win32')
def setup_env_windows(system_lang=True):
"""Check environment variables used by gettext
and setup LANG if there is none.
"""
if _get_lang_env_var() is not None:
return
lang = get_language_windows(system_lang)
if lang:
os.environ['LANGUAGE'] = ':'.join(lang)
def get_language_windows(system_lang=True):
"""Get language code based on current Windows settings.
@return: list of languages.
"""
try:
import ctypes
except ImportError:
return [locale.getdefaultlocale()[0]]
# get all locales using windows API
lcid_user = ctypes.windll.kernel32.GetUserDefaultLCID()
lcid_system = ctypes.windll.kernel32.GetSystemDefaultLCID()
if system_lang and lcid_user != lcid_system:
lcids = [lcid_user, lcid_system]
else:
lcids = [lcid_user]
return filter(None, [locale.windows_locale.get(i) for i in lcids]) or None
def setup_env_other(system_lang=True):
pass
def get_language_other(system_lang=True):
lang = _get_lang_env_var()
if lang is not None:
return lang.split(':')
return None
def _get_lang_env_var():
for i in ('LANGUAGE','LC_ALL','LC_MESSAGES','LANG'):
lang = os.environ.get(i)
if lang:
return lang
return None
if OS_WINDOWS:
setup_env = setup_env_windows
get_language = get_language_windows
else:
setup_env = setup_env_other
get_language = get_language_other
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