util: add git__ishex git__ishex allows to check if a string is a hexadecimal representation. Signed-off-by: schu <schu-github@schulog.org>
diff --git a/src/util.h b/src/util.h
index 0eff906..f77c91d 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__ */