aurweb/l10n.py

   1 import gettext
   2
   3 import aurweb.config
   4
   5
   6 class Translator:
   7     def __init__(self):
   8         self._localedir = aurweb.config.get('options', 'localedir')
   9         self._translator = {}
  10
  11     def translate(self, s, lang):
  12         if lang == 'en':
  13             return s
  14         if lang not in self._translator:
  15             self._translator[lang] = gettext.translation("aurweb",
  16                                                          self._localedir,
  17                                                          languages=[lang])
  18         return self._translator[lang].gettext(s)
  19
  20
  21 def get_translator_for_request(request):
  22     """
  23     Determine the preferred language from a FastAPI request object and build a
  24     translator function for it.
  25
  26     Example:
  27     ```python
  28     _ = get_translator_for_request(request)
  29     print(_("Hello"))
  30     ```
  31     """
  32     lang = request.cookies.get("AURLANG")
  33     if lang is None:
  34         lang = aurweb.config.get("options", "default_lang")
  35     translator = Translator()
  36
  37     def translate(message):
  38         return translator.translate(message, lang)
  39
  40     return translate