I18N with Python on win32

win32i18n.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

'''
This is the modified module `libi18n.locale` from
https://www.mail-archive.com/python-list@python.org/msg188668.html.

It is fixed to distinguish internationalization and
localization. Reference: http://tinyurl.com/gnulocale


Marc Schlaich, 2012-2014


Original copyright:

    Copyright (C) 2007-2008 Dieter Verfaillie <dieterv@optionexplicit.be>

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the
    Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.

'''

import os
import locale
from ctypes import windll, cdll

# Partially parsed from
# http://msdn.microsoft.com/en-us/library/dd318693

LCID = {
    0x0436: 'af_ZA',
    0x041c: 'sq_AL',
    0x0484: 'gsw_FR',
    0x045e: 'am_ET',
    0x1401: 'ar_DZ',
    0x3c01: 'ar_BH',
    0x0c01: 'ar_EG',
    0x0801: 'ar_IQ',
    0x2c01: 'ar_JO',
    0x3401: 'ar_KW',
    0x3001: 'ar_LB',
    0x1001: 'ar_LY',
    0x1801: 'ar_MA',
    0x2001: 'ar_OM',
    0x4001: 'ar_QA',
    0x0401: 'ar_SA',
    0x2801: 'ar_SY',
    0x1c01: 'ar_TN',
    0x3801: 'ar_AE',
    0x2401: 'ar_YE',
    0x042b: 'hy_AM',
    0x044d: 'as_IN',
    0x082c: 'az_AZ',
    0x042c: 'az_AZ',
    0x046d: 'ba_RU',
    0x042d: 'eu_ES',
    0x0423: 'be_BY',
    0x201a: 'bs_BA',
    0x141a: 'bs_BA',
    0x047e: 'br_FR',
    0x0402: 'bg_BG',
    0x0492: 'bg_IQ',
    0x0403: 'ca_ES',
    0x0c04: 'zh_HK',
    0x1404: 'zh_MO',
    0x1004: 'zh_SG',
    0x0483: 'co_FR',
    0x101a: 'hr_BA',
    0x041a: 'hr_HR',
    0x0405: 'cs_CZ',
    0x0406: 'da_DK',
    0x048c: 'prs_AF',
    0x0465: 'dv_MV',
    0x0813: 'nl_BE',
    0x0413: 'nl_NL',
    0x0c09: 'en_AU',
    0x2809: 'en_BZ',
    0x1009: 'en_CA',
    0x4009: 'en_IN',
    0x1809: 'en_IE',
    0x1809: 'en_IE',
    0x2009: 'en_JM',
    0x4409: 'en_MY',
    0x1409: 'en_NZ',
    0x3409: 'en_PH',
    0x4809: 'en_SG',
    0x1c09: 'en_ZA',
    0x2c09: 'en_TT',
    0x0809: 'en_GB',
    0x0409: 'en_US',
    0x3009: 'en_ZW',
    0x0425: 'et_EE',
    0x0438: 'fo_FO',
    0x0464: 'fil_PH',
    0x040b: 'fi_FI',
    0x080c: 'fr_BE',
    0x0c0c: 'fr_CA',
    0x040c: 'fr_FR',
    0x140c: 'fr_LU',
    0x180c: 'fr_MC',
    0x100c: 'fr_CH',
    0x0462: 'fy_NL',
    0x0456: 'gl_ES',
    0x0437: 'ka_GE',
    0x0c07: 'de_AT',
    0x0407: 'de_DE',
    0x1407: 'de_LI',
    0x1007: 'de_LU',
    0x0807: 'de_CH',
    0x0408: 'el_GR',
    0x046f: 'kl_GL',
    0x0447: 'gu_IN',
    0x0468: 'ha_NG',
    0x0475: 'haw_US',
    0x040d: 'he_IL',
    0x0439: 'hi_IN',
    0x040e: 'hu_HU',
    0x040f: 'is_IS',
    0x0470: 'ig_NG',
    0x0421: 'id_ID',
    0x085d: 'iu_CA',
    0x045d: 'iu_CA',
    0x083c: 'ga_IE',
    0x0434: 'xh_ZA',
    0x0435: 'zu_ZA',
    0x0410: 'it_IT',
    0x0810: 'it_CH',
    0x0411: 'ja_JP',
    0x044b: 'kn_IN',
    0x043f: 'kk_KZ',
    0x0453: 'kh_KH',
    0x0486: 'kh_GT',
    0x0487: 'rw_RW',
    0x0457: 'kok_IN',
    0x0412: 'ko_KR',
    0x0440: 'ky_KG',
    0x0454: 'lo_LA',
    0x0426: 'lv_LV',
    0x0427: 'lt_LT',
    0x082e: 'lt_DE',
    0x046e: 'lb_LU',
    0x042f: 'mk_MK',
    0x083e: 'ms_BN',
    0x043e: 'ms_MY',
    0x044c: 'ml_IN',
    0x043a: 'mt_MT',
    0x0481: 'mi_NZ',
    0x047a: 'arn_CL',
    0x044e: 'mr_IN',
    0x047c: 'moh_CA',
    0x0450: 'mn_MN',
    0x0850: 'mn_MN',
    0x0461: 'ne_NP',
    0x0414: 'no_NO',
    0x0814: 'no_NO',
    0x0482: 'oc_FR',
    0x0448: 'or_IN',
    0x0463: 'ps_AF',
    0x0429: 'fa_IR',
    0x0415: 'pl_PL',
    0x0416: 'pt_BR',
    0x0816: 'pt_PT',
    0x0867: 'ff_SN',
    0x0446: 'pa_IN',
    0x046b: 'quz_BO',
    0x086b: 'quz_EC',
    0x0c6b: 'quz_PE',
    0x0418: 'ro_RO',
    0x0417: 'rm_CH',
    0x0419: 'ru_RU',
    0x0485: 'sah_RU',
    0x243b: 'smn_FI',
    0x103b: 'smn_NO',
    0x143b: 'smn_SE',
    0x0c3b: 'smn_FI',
    0x043b: 'smn_NO',
    0x083b: 'smn_SE',
    0x203b: 'smn_FI',
    0x183b: 'smn_NO',
    0x1c3b: 'smn_SE',
    0x044f: 'sa_IN',
    0x1c1a: 'sa_BA',
    0x181a: 'sa_BA',
    0x0c1a: 'sa_CS',
    0x081a: 'sa_CS',
    0x046c: 'sa_ZA',
    0x0832: 'sa_BW',
    0x0432: 'sa_ZA',
    0x0859: 'sa_PK',
    0x045b: 'si_LK',
    0x041b: 'sk_SK',
    0x0424: 'sl_SI',
    0x2c0a: 'es_AR',
    0x400a: 'es_BO',
    0x340a: 'es_CL',
    0x240a: 'es_CO',
    0x140a: 'es_CR',
    0x1c0a: 'es_DO',
    0x300a: 'es_EC',
    0x440a: 'es_SV',
    0x100a: 'es_GT',
    0x480a: 'es_HN',
    0x080a: 'es_MX',
    0x4c0a: 'es_NI',
    0x180a: 'es_PA',
    0x3c0a: 'es_PY',
    0x280a: 'es_PE',
    0x500a: 'es_PR',
    0x0c0a: 'es_ES',
    0x040a: 'es_ES',
    0x540a: 'es_US',
    0x380a: 'es_UY',
    0x200a: 'es_VE',
    0x0441: 'sw_KE',
    0x081d: 'sv_FI',
    0x041d: 'sv_SE',
    0x041d: 'sv_SE',
    0x045a: 'syr_SY',
    0x0428: 'tg_TJ',
    0x085f: 'tzm_DZ',
    0x0449: 'ta_IN',
    0x0849: 'ta_LK',
    0x0444: 'tt_RU',
    0x044a: 'te_IN',
    0x041e: 'th_TH',
    0x0451: 'bo_CN',
    0x0873: 'ti_ER',
    0x0473: 'ti_ET',
    0x041f: 'tr_TR',
    0x0442: 'tk_TM',
    0x0422: 'uk_UA',
    0x042e: 'uk_DE',
    0x0420: 'uk_PK',
    0x0480: 'ug_CN',
    0x0843: 'uz_UZ',
    0x0443: 'uz_UZ',
    0x042a: 'vi_VN',
    0x0452: 'cy_GB',
    0x0488: 'wo_SN',
    0x0478: 'ii_CN',
    0x046a: 'yo_NG',
}


def _putenv(name, value):
    # From python 2.4 on, os.environ changes only
    # work within python and no longer apply to low level
    # c stuff on win32. Lets force LANG so it works with
    # gtk+ etc
    kernel32 = windll.kernel32
    result = kernel32.SetEnvironmentVariableW(name, value)
    if result == 0:
        raise

    msvcrt = cdll.msvcrt
    msvcrt._putenv('%s=%s' % (name, value))


def setenv(name, value):
    os.environ[name] = value
    _putenv(name, value)


def getlang():
    # Try to detect language with GetUserDefaultUILanguage().
    # This supports windows MUI language packs and will return
    # the windows installation language if not available or
    # if the language has not been changed by the user.
    # Works on win2k and up.
    # Environment always overrides this for debugging purposes.

    langid = windll.kernel32.GetUserDefaultUILanguage()
    if not langid == 0:
        return LCID.get(langid, 'C')
    return 'C'


def fix_lang(lang=None):
    if not lang:
        lang = os.environ.get('LANG')

    if not lang:
        # TODO: use gtk.get_default_language() ?
        ui_lang = getlang()

        lang, _ = locale.getlocale()
        if not lang:
            lang, _ = locale.getdefaultlocale()

        if ui_lang != lang:
            setenv('LC_MESSAGES', ui_lang)

    locale.setlocale(locale.LC_ALL, '')
    setenv('LANG', lang)