Adds a method to determine if a language key is undefined.

MythTV · Nov 18, 2011 · ac795d5 · ac795d5
1 parent 01c25aa
commit ac795d5
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/mythtv/libs/libmythbase/iso639.h b/mythtv/libs/libmythbase/iso639.h
@@ -53,6 +53,13 @@ static inline QString iso639_key_to_str3(int code)
     return QString(str);
 }
 
+/// Returns true if the key is 0, 0xFFFFFF, or 'und'
+static inline bool iso639_is_key_undefined(int code)
+{
+    int bits = code & 0xFFFFFF;
+    return (0 == bits) || (0xFFFFFF == bits) || (0x756E64 == bits);
+}
+
 static inline int iso639_str3_to_key(const unsigned char *iso639_2)
 {
     return (iso639_2[0]<<16)|(iso639_2[1]<<8)|iso639_2[2];