def process_request(self, request):
        locale, path = utils.strip_path(request.path_info)
        if localeurl_settings.USE_SESSION and not locale:
            slocale = request.session.get('django_language')
            if slocale and utils.supported_language(slocale):
                locale = slocale
        if localeurl_settings.USE_ACCEPT_LANGUAGE and not locale:
            accept_lang_header = request.META.get('HTTP_ACCEPT_LANGUAGE', '')
            header_langs = parse_accept_lang_header(accept_lang_header)
            accept_langs = [
                l for l in
                (utils.supported_language(lang[0]) for lang in header_langs)
                if l
            ]
            if accept_langs:
                locale = accept_langs[0]
        locale_path = utils.locale_path(path, locale)
        # locale case might be different in the two paths, that doesn't require
        # a redirect (besides locale they'll be identical anyway)
        if locale_path.lower() != request.path_info.lower():
            locale_url = utils.add_script_prefix(locale_path)

            qs = request.META.get("QUERY_STRING", "")
            if qs:
                # Force this to remain a byte-string by encoding locale_path
                # first to avoid Unicode tainting - downstream will need to
                # handle the job of handling in-the-wild character encodings:
                locale_url = "%s?%s" % (locale_path.encode("utf-8"), qs)

            redirect_class = HttpResponsePermanentRedirect
            if not localeurl_settings.LOCALE_REDIRECT_PERMANENT:
                redirect_class = HttpResponseRedirect
            # @@@ iri_to_uri for Django 1.0; 1.1+ do it in HttpResp...Redirect
            return redirect_class(iri_to_uri(locale_url))
        request.path_info = path
        if not locale:
            try:
                locale = request.LANGUAGE_CODE
            except __HOLE__:
                locale = settings.LANGUAGE_CODE
        translation.activate(locale)
        request.LANGUAGE_CODE = translation.get_language()
dataset/ETHPy150Open carljm/django-localeurl/localeurl/middleware.py/LocaleURLMiddleware.process_request