From e120196259a3ad58a26abf769119e76ca5e9e928 Mon Sep 17 00:00:00 2001
From: Igor Chubin <igor@chub.in>
Date: Wed, 3 Oct 2018 19:38:33 +0200
Subject: [PATCH] added find_supported_language()

---
 bin/srv.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/bin/srv.py b/bin/srv.py
index b9314ed..75c9f9a 100644
--- a/bin/srv.py
+++ b/bin/srv.py
@@ -265,6 +265,15 @@ def location_canonical_name( location ):
         return location_alias[location.lower()]
     return location
 
+def find_supported_language(accepted_languages):
+    for p in accepted_languages:
+        lang = p[0]
+        if '-' in lang:
+            lang = lang.split('-',1)[0]
+        if lang in SUPPORTED_LANGS:
+            return lang
+    return None
+
 def show_help():
     return open(HELP_FILE, 'r').read()