Make the locale directory configurable

Add a new configuration option to specify the locale directory to use.
This allows the Python scripts to find the translations, even when not
being run from the source code checkout. At the same time, multiple
parallel aurweb setups can still use different sets of translations.

Fixes FS#59278.
Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

aurweb/l10n.py

 import gettext
 
+import aurweb.config
+
 
 class Translator:
     def __init__(self):
+        self._localedir = aurweb.config.get('options', 'localedir')
         self._translator = {}
 
     def translate(self, s, lang):
@@ -10,7 +13,7 @@ class Translator:
             return s
         if lang not in self._translator:
             self._translator[lang] = gettext.translation("aurweb",
-                                                         "../../web/locale",
+                                                         self._localedir,
                                                          languages=[lang])
         self._translator[lang].install()
         return _(s)

conf/config.defaults

@@ -35,6 +35,7 @@ snapshot_uri = /cgit/aur.git/snapshot/%s.tar.gz
 enable-maintenance = 1
 maintenance-exceptions = 127.0.0.1
 render-comment-cmd = /usr/local/bin/aurweb-rendercomment
+localedir = /srv/http/aurweb/aur.git/web/locale/
 # memcache or apc
 cache = none
 memcache_servers = 127.0.0.1:11211

web/lib/translator.inc.php

@@ -130,7 +130,8 @@ function set_lang() {
 		setcookie("AURLANG", $LANG, $cookie_time, "/");
 	}
 
-	$streamer = new FileReader('../locale/' . $LANG .
+	$localedir = config_get('options', 'localedir');
+	$streamer = new FileReader($localedir . '/' . $LANG .
 		'/LC_MESSAGES/aurweb.mo');
 	$l10n = new gettext_reader($streamer, true);