diff options
Diffstat (limited to 'mediagoblin/tools/translate.py')
| -rw-r--r-- | mediagoblin/tools/translate.py | 102 |
1 files changed, 78 insertions, 24 deletions
diff --git a/mediagoblin/tools/translate.py b/mediagoblin/tools/translate.py index 01cabe6a..b20e57d1 100644 --- a/mediagoblin/tools/translate.py +++ b/mediagoblin/tools/translate.py @@ -16,7 +16,9 @@ import gettext import pkg_resources -from babel.localedata import exists + + +from babel import localedata from babel.support import LazyProxy from mediagoblin import mg_globals @@ -25,14 +27,40 @@ from mediagoblin import mg_globals # Translation tools ################### - +AVAILABLE_LOCALES = None TRANSLATIONS_PATH = pkg_resources.resource_filename( 'mediagoblin', 'i18n') +def set_available_locales(): + """Set available locales for which we have translations""" + global AVAILABLE_LOCALES + locales=['en', 'en_US'] # these are available without translations + for locale in localedata.list(): + if gettext.find('mediagoblin', TRANSLATIONS_PATH, [locale]): + locales.append(locale) + AVAILABLE_LOCALES = locales + + +class ReallyLazyProxy(LazyProxy): + """ + Like LazyProxy, except that it doesn't cache the value ;) + """ + @property + def value(self): + return self._func(*self._args, **self._kwargs) + + def __repr__(self): + return "<%s for %s(%r, %r)>" % ( + self.__class__.__name__, + self._func, + self._args, + self._kwargs) + + def locale_to_lower_upper(locale): """ - Take a locale, regardless of style, and format it like "en-US" + Take a locale, regardless of style, and format it like "en_US" """ if '-' in locale: lang, country = locale.split('-', 1) @@ -57,28 +85,32 @@ def locale_to_lower_lower(locale): def get_locale_from_request(request): """ - Figure out what target language is most appropriate based on the - request + Return most appropriate language based on prefs/request request """ - request_form = request.GET or request.form + request_args = (request.args, request.form)[request.method=='POST'] - if request_form.has_key('lang'): - return locale_to_lower_upper(request_form['lang']) + if 'lang' in request_args: + # User explicitely demanded a language, normalize lower_uppercase + target_lang = locale_to_lower_upper(request_args['lang']) - if 'target_lang' in request.session: + elif 'target_lang' in request.session: + # TODO: Uh, ohh, this is never ever set anywhere? target_lang = request.session['target_lang'] - # Pull the first acceptable language or English else: - # TODO: Internationalization broken - target_lang = 'en' + # Pull the most acceptable language based on browser preferences + # This returns one of AVAILABLE_LOCALES which is aready case-normalized. + # Note: in our tests request.accept_languages is None, so we need + # to explicitely fallback to en here. + target_lang = request.accept_languages.best_match(AVAILABLE_LOCALES) \ + or "en_US" - return locale_to_lower_upper(target_lang) + return target_lang SETUP_GETTEXTS = {} -def setup_gettext(locale): +def get_gettext_translation(locale): """ - Setup the gettext instance based on this locale + Return the gettext instance based on this locale """ # Later on when we have plugins we may want to enable the # multi-translations system they have so we can handle plugin @@ -91,15 +123,14 @@ def setup_gettext(locale): else: this_gettext = gettext.translation( 'mediagoblin', TRANSLATIONS_PATH, [locale], fallback=True) - if exists(locale): + if localedata.exists(locale): SETUP_GETTEXTS[locale] = this_gettext - - mg_globals.thread_scope.translations = this_gettext + return this_gettext -# Force en to be setup before anything else so that -# mg_globals.translations is never None -setup_gettext('en') +def set_thread_locale(locale): + """Set the current translation for this thread""" + mg_globals.thread_scope.translations = get_gettext_translation(locale) def pass_to_ugettext(*args, **kwargs): @@ -112,6 +143,16 @@ def pass_to_ugettext(*args, **kwargs): return mg_globals.thread_scope.translations.ugettext( *args, **kwargs) +def pass_to_ungettext(*args, **kwargs): + """ + Pass a translation on to the appropriate ungettext method. + + The reason we can't have a global ugettext method is because + mg_globals gets swapped out by the application per-request. + """ + return mg_globals.thread_scope.translations.ungettext( + *args, **kwargs) + def lazy_pass_to_ugettext(*args, **kwargs): """ @@ -119,9 +160,12 @@ def lazy_pass_to_ugettext(*args, **kwargs): This is useful if you have to define a translation on a module level but you need it to not translate until the time that it's - used as a string. + used as a string. For example, in: + def func(self, message=_('Hello boys and girls')) + + you would want to use the lazy version for _. """ - return LazyProxy(pass_to_ugettext, *args, **kwargs) + return ReallyLazyProxy(pass_to_ugettext, *args, **kwargs) def pass_to_ngettext(*args, **kwargs): @@ -143,7 +187,17 @@ def lazy_pass_to_ngettext(*args, **kwargs): level but you need it to not translate until the time that it's used as a string. """ - return LazyProxy(pass_to_ngettext, *args, **kwargs) + return ReallyLazyProxy(pass_to_ngettext, *args, **kwargs) + +def lazy_pass_to_ungettext(*args, **kwargs): + """ + Lazily pass to ungettext. + + This is useful if you have to define a translation on a module + level but you need it to not translate until the time that it's + used as a string. + """ + return ReallyLazyProxy(pass_to_ungettext, *args, **kwargs) def fake_ugettext_passthrough(string): |