Make hexval() available to others.

builtin-mailinfo.c has its own hexval implementaiton but it can
share the table-lookup one recently implemented in sha1_file.c

Signed-off-by: Junio C Hamano <junkio@cox.net>

1 files changed, 6 insertions, 0 deletions

diff --git a/cache.h b/cache.h
index 57db7c9b2..d557e75eb 100644
--- a/cache.h
+++ b/cache.h
@@ -278,6 +278,12 @@ enum object_type {
 	OBJ_BAD,
 };
 
+extern signed char hexval_table[256];
+static inline unsigned int hexval(unsigned int c)
+{
+	return hexval_table[c];
+}
+
 /* Convert to/from hex/sha1 representation */
 #define MINIMUM_ABBREV 4
 #define DEFAULT_ABBREV 7