[PATCH] Replace literal STRLEN_ #defines in refs.h with compiler evaluated expressions

[Andy Parkins <andyparkins@gmail.com>]

Bill Lear pointed out that the following:

 #define PATH_REMOTES             "remotes/"
 #define STRLEN_PATH_REMOTES      8

Could be replaced by the less error-prone

 #define PATH_REMOTES "remotes/"
 #define LIT_STRLEN(S) ((sizeof(S) / sizeof(S[0])) -1)
 #define STRLEN_PATH_REMOTES LIT_STRLEN(PATH_REMOTES)

which is what this patch does.

Signed-off-by: Andy Parkins <andyparkins@gmail.com>
---

On top of my previous patch.


 refs.h |   11 ++++++-----
 1 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/refs.h b/refs.h
index a986b42..6761095 100644
--- a/refs.h
+++ b/refs.h
@@ -13,16 +13,17 @@ struct ref_lock {
 #define REF_ISSYMREF 01
 #define REF_ISPACKED 02
 
+#define LIT_STRLEN(S)            ((sizeof(S) / sizeof(S[0])) -1)
 #define PATH_OBJECTS             "objects/"
-#define STRLEN_PATH_OBJECTS      8
+#define STRLEN_PATH_OBJECTS      LIT_STRLEN(PATH_OBJECTS)
 #define PATH_REFS                "refs/"
-#define STRLEN_PATH_REFS         5
+#define STRLEN_PATH_REFS         LIT_STRLEN(PATH_REFS)
 #define PATH_HEADS               "heads/"
-#define STRLEN_PATH_HEADS        6
+#define STRLEN_PATH_HEADS        LIT_STRLEN(PATH_HEADS)
 #define PATH_TAGS                "tags/"
-#define STRLEN_PATH_TAGS         5
+#define STRLEN_PATH_TAGS         LIT_STRLEN(PATH_TAGS)
 #define PATH_REMOTES             "remotes/"
-#define STRLEN_PATH_REMOTES      8
+#define STRLEN_PATH_REMOTES      LIT_STRLEN(PATH_REMOTES)
 #define PATH_REFS_HEADS          PATH_REFS PATH_HEADS
 #define STRLEN_PATH_REFS_HEADS   (STRLEN_PATH_REFS+STRLEN_PATH_HEADS)
 #define PATH_REFS_TAGS           PATH_REFS PATH_TAGS
-- 
1.5.0.rc4.gb4d2