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# Created By: Virgil Dupras
# Created On: 2010-06-23
# Copyright 2015 Hardcoded Software (http://www.hardcoded.net)
#
# This software is licensed under the "GPLv3" License as described in the "LICENSE" file,
# which should be included with this package. The terms are also available at
# http://www.gnu.org/licenses/gpl-3.0.html
# Doing i18n with GNU gettext for the core text gets complicated, so what I do is that I make the
# GUI layer responsible for supplying a tr() function.
import locale
import logging
import os
import os.path as op
from typing import Callable, Union
from hscommon.plat import ISLINUX
_trfunc = None
_trget = None
installed_lang = None
def tr(s: str, context: Union[str, None] = None) -> str:
if _trfunc is None:
return s
else:
if context:
return _trfunc(s, context)
else:
return _trfunc(s)
def trget(domain: str) -> Callable[[str], str]:
# Returns a tr() function for the specified domain.
if _trget is None:
return lambda s: tr(s, domain)
else:
return _trget(domain)
def set_tr(
new_tr: Callable[[str, Union[str, None]], str], new_trget: Union[Callable[[str], Callable[[str], str]], None] = None
) -> None:
global _trfunc, _trget
_trfunc = new_tr
if new_trget is not None:
_trget = new_trget
def get_locale_name(lang: str) -> Union[str, None]:
# Removed old conversion code as windows seems to support these
LANG2LOCALENAME = {
"cs": "cs_CZ",
"de": "de_DE",
"el": "el_GR",
"en": "en",
"es": "es_ES",
"fr": "fr_FR",
"hy": "hy_AM",
"it": "it_IT",
"ja": "ja_JP",
"ko": "ko_KR",
"ms": "ms_MY",
"nl": "nl_NL",
"pl_PL": "pl_PL",
"pt_BR": "pt_BR",
"ru": "ru_RU",
"tr": "tr_TR",
"uk": "uk_UA",
"vi": "vi_VN",
"zh_CN": "zh_CN",
}
if lang not in LANG2LOCALENAME:
return None
result = LANG2LOCALENAME[lang]
if ISLINUX:
result += ".UTF-8"
return result
# --- Qt
def install_qt_trans(lang: str = None) -> None:
from PyQt5.QtCore import QCoreApplication, QTranslator, QLocale
if not lang:
lang = str(QLocale.system().name())[:2]
localename = get_locale_name(lang)
if localename is not None:
try:
locale.setlocale(locale.LC_ALL, localename)
except locale.Error:
logging.warning("Couldn't set locale %s", localename)
else:
lang = "en"
qtr1 = QTranslator(QCoreApplication.instance())
qtr1.load(":/qt_%s" % lang)
QCoreApplication.installTranslator(qtr1)
qtr2 = QTranslator(QCoreApplication.instance())
qtr2.load(":/%s" % lang)
QCoreApplication.installTranslator(qtr2)
def qt_tr(s: str, context: Union[str, None] = "core") -> str:
if context is None:
context = "core"
return str(QCoreApplication.translate(context, s, None))
set_tr(qt_tr)
# --- gettext
def install_gettext_trans(base_folder: os.PathLike, lang: str) -> None:
import gettext
def gettext_trget(domain: str) -> Callable[[str], str]:
if not lang:
return lambda s: s
try:
return gettext.translation(domain, localedir=base_folder, languages=[lang]).gettext
except OSError:
return lambda s: s
default_gettext = gettext_trget("core")
def gettext_tr(s: str, context: Union[str, None] = None) -> str:
if not context:
return default_gettext(s)
else:
trfunc = gettext_trget(context)
return trfunc(s)
set_tr(gettext_tr, gettext_trget)
global installed_lang
installed_lang = lang
def install_gettext_trans_under_qt(base_folder: os.PathLike, lang: str = None) -> None:
# So, we install the gettext locale, great, but we also should try to install qt_*.qm if
# available so that strings that are inside Qt itself over which I have no control are in the
# right language.
from PyQt5.QtCore import QCoreApplication, QTranslator, QLocale, QLibraryInfo
if not lang:
lang = str(QLocale.system().name())[:2]
localename = get_locale_name(lang)
if localename is None:
lang = "en"
localename = get_locale_name(lang)
try:
locale.setlocale(locale.LC_ALL, localename)
except locale.Error:
logging.warning("Couldn't set locale %s", localename)
qmname = "qt_%s" % lang
if ISLINUX:
# Under linux, a full Qt installation is already available in the system, we didn't bundle
# up the qm files in our package, so we have to load translations from the system.
qmpath = op.join(QLibraryInfo.location(QLibraryInfo.TranslationsPath), qmname)
else:
qmpath = op.join(base_folder, qmname)
qtr = QTranslator(QCoreApplication.instance())
qtr.load(qmpath)
QCoreApplication.installTranslator(qtr)
install_gettext_trans(base_folder, lang)
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