eggs.py 文件源码

def get_languages_supported_by_all(cls, root_egg):
        egg_interfaces = cls.get_all_relevant_interfaces(root_egg)
        default_languages = ['en_gb']
        if not egg_interfaces:
            return default_languages

        domains_in_use = [e.name for e in egg_interfaces]

        languages_for_eggs = {}
        for translation_entry_point in iter_entry_points('reahl.translations'):
            requirement = translation_entry_point.dist.as_requirement()
            egg_internal_path = cls.get_egg_internal_path_for(translation_entry_point)

            if resource_isdir(requirement, egg_internal_path):
                languages = [d for d in resource_listdir(requirement, egg_internal_path)
                             if (resource_isdir(requirement, '%s/%s' % (egg_internal_path, d)) and not d.startswith('__'))]
            else:
                logging.error('Translations of %s not found in %s' % (requirement, egg_internal_path))
                languages = []

            for language in languages:
                language_path = '%s/%s/LC_MESSAGES' % (egg_internal_path, language)
                domains = [d[:-3] for d in resource_listdir(requirement, language_path) if d.endswith('.mo')]
                for domain in domains:
                    if domain in domains_in_use:
                        languages = languages_for_eggs.setdefault(domain, set())
                        languages.add(language)

        if not languages_for_eggs.values():
            return default_languages
        languages = (list(languages_for_eggs.values()))[0].intersection(*languages_for_eggs.values())
        languages.update(default_languages)
        return list(languages)