From 905919e63b7b4357ca75ef5e8bfeca7485428dc9 Mon Sep 17 00:00:00 2001
From: schu <schu-github@schulog.org>
Date: Tue, 14 Feb 2012 20:44:22 +0100
Subject: [PATCH] util: add git__ishex

git__ishex allows to check if a string is a hexadecimal representation.

Signed-off-by: schu <schu-github@schulog.org>
---
 src/util.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/util.h b/src/util.h
index 0eff90669..f77c91dfd 100644
--- a/src/util.h
+++ b/src/util.h
@@ -169,4 +169,13 @@ GIT_INLINE(int) git__fromhex(char h)
 	return from_hex[(unsigned char) h];
 }
 
+GIT_INLINE(int) git__ishex(const char *str)
+{
+	unsigned i;
+	for (i=0; i<strlen(str); i++)
+		if (git__fromhex(str[i]) < 0)
+			return 0;
+	return 1;
+}
+
 #endif /* INCLUDE_util_h__ */