locale.py 文件源码

def _get_translation(self, domain = None,
                         localedir = None,
                         languages=None):
        """
        Get a translation of one of our classes. Doesn't return the
        singleton so that it can be used by get_addon_translation()
        """
        if not domain:
            domain = self.localedomain
        if not languages:
            languages = self.language
        if not localedir:
            localedir = self.localedir

        for lang in languages:
            if gettext.find(domain, localedir, [lang]):
                translator = gettext.translation(domain, localedir,
                                                 [lang],
                                                 class_ = GrampsTranslations)
                translator._language = lang
                return translator

            elif lang.startswith("en") or lang.startswith("C"):
                translator = GrampsNullTranslations()
                translator._language = "en"
                return translator

        if not languages or len(languages) == 0:
            LOG.warning("No language provided, using US English")
        else:
            raise ValueError("No usable translations in %s for " %
                             ':'.join(languages))
        translator = GrampsNullTranslations()
        translator._language = "en"
        return translator