From f4e97cba4c2a47622ef648b4c94dee04e4ba4805 Mon Sep 17 00:00:00 2001
From: Jonathan Cobb <jonathan@kyuss.org>
Date: Thu, 27 Aug 2020 07:54:04 -0400
Subject: [PATCH] add LocaleUtil.getLang

---
 src/main/java/org/cobbzilla/util/string/LocaleUtil.java | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/main/java/org/cobbzilla/util/string/LocaleUtil.java b/src/main/java/org/cobbzilla/util/string/LocaleUtil.java
index af6ea39..7229a38 100644
--- a/src/main/java/org/cobbzilla/util/string/LocaleUtil.java
+++ b/src/main/java/org/cobbzilla/util/string/LocaleUtil.java
@@ -143,4 +143,13 @@ public class LocaleUtil {
             default: return empty(defaultLocale) ? null : currencyForLocale(defaultLocale, null);
         }
     }
+
+    public static String getLang(String locale) {
+        if (empty(locale)) return null;
+        final int uPos = locale.indexOf("_");
+        return uPos == -1
+                ? locale.toLowerCase().equals(locale) ? locale : null
+                : locale.substring(0, uPos);
+    }
+
 }