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# -*- coding: utf-8 -*-
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# Copyright 2008-2016 Mir Calculate. http://www.calculate-linux.org
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import os
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import gettext
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from gettext import gettext as _
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import threading
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import types
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import sys
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import re
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from gettext import Catalog
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from importlib import reload
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class Lang:
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"""
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Multilanguage class
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"""
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_modnames = {}
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GP = [""]
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orig_gettext = _
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def __init__(self):
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self.nameDomain = self.GP[0]
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self.__catalog = None
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# translate language for all modules
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self._translators = {}
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def __translate(self, message):
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"""Method return message without changes"""
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return self.__gettranslate()(message)
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def setLanguage(self, module, glob=False):
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"""Set translate language for modules 'module'.
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module - export python module
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if the module export other modules, then lang will be
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set for them
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Method must be call after module for translate"""
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if glob:
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for name, mod in vars(module).items():
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if (isinstance(mod, types.ModuleType) and
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not name.startswith('__') and
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name not in sys.builtin_module_names and
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(hasattr(mod, '__file__') and (
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"calculate" in mod.__file__ or
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not mod.__file__.startswith('/usr/lib')))):
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self.__setLang(mod)
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self.setLanguage(mod, True)
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return self.__setLang(module)
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def __setLang(self, module):
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""" Set translate language for module 'module'.
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"""
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if module.__name__ in self._modnames.keys():
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return True
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module._ = self.__translate
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self._modnames[module.__name__] = module._
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@staticmethod
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def get_current_lang():
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"""
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Получить текущий язык
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"""
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env = os.environ
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cur_thread = threading.currentThread()
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if hasattr(cur_thread, "lang"):
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return cur_thread.lang
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return env.get("LANG", "en_US.utf8").split('.')[0].split("_")[0]
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def __gettranslate(self):
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l = self.get_current_lang()
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if l in self._translators:
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return self._translators[l]
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if l == 'en':
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trans = lambda x: x
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else:
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la = [l]
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reload(gettext)
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if gettext.find(self.nameDomain, self.__catalog, la):
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"""Если найден словарь то инициализируем переводчик"""
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transl = gettext.translation(self.nameDomain, self.__catalog,
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la)
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trans = transl.gettext
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else:
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trans = lambda x: x
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self._translators[l] = trans
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return trans
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def getTranslatorByName(self, namemodule):
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"""Method for detect already imported translate modules
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"""
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return self._modnames.get(namemodule, 0)
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def setGlobalDomain(self, nameDomain):
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""" Method for set global translate domain
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"""
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self.GP[0] = nameDomain
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self.nameDomain = self.GP[0]
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return True
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def setLocalDomain(self, nameDomain):
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""" Method for set local translate domain
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"""
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self.nameDomain = nameDomain
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return True
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def setGlobalTranslate(domain, *modules):
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_lang = Lang()
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_lang.setGlobalDomain(domain)
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for mod in modules:
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_lang.setLanguage(mod, glob=True)
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def setLocalTranslate(domain, *modules):
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_lang = Lang()
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_lang.setLocalDomain(domain)
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for mod in modules:
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_lang.setLanguage(mod)
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def getLazyLocalTranslate(translateFunc):
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class Translate:
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def __init__(self, s):
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self.s = s
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self._format_args = None
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def __str__(self):
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if self._format_args is None:
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return translateFunc(self.s)
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else:
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return translateFunc(self.s).format(*self._format_args[0],
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**self._format_args[1])
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def __hash__(self):
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return hash(self.s)
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def format(self, *args, **kwargs):
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self._format_args = (args, kwargs)
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return self
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return Translate
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class RegexpLocalization(object):
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def __init__(self, domain, languages=(Lang.get_current_lang())):
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try:
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self.set_translate_dict(Catalog(domain,
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languages=languages)._catalog)
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except IOError:
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self._catalog = {}
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def set_translate_dict(self, d):
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def create_key(k):
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try:
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return re.compile(k.replace(r"\\\\", r"\\"))
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except re.error:
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return None
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# self._catalog = list(filter(lambda x: x[0],
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# ((create_key(k), v) for k, v in
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# sorted(d.items(), reverse=True) if k)))
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self._catalog = [x for x in [(create_key(k), v) for k, v in
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sorted(d.items(), reverse=True) if k] if x[0]]
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def translate(self, s):
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for k, v in self._catalog:
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try:
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s = k.sub(v, s)
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except UnicodeDecodeError:
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return s
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return s
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