[PATCH 1/5] define empty tree sha1 as a macro

From

Jeff King <peff@peff.net>

Date

Nov 12, 2008, 08:17 UTC

Message-ID

<20081112081752.GA3751@coredump.intra.peff.net>

In-Reply-To

<20081112081609.GA3720@coredump.intra.peff.net>

Signed-off-by: Jeff King <peff@peff.net>
---
I use the _HEX version in further patches, but since it is such a magic
number, I thought it made sense to keep all definitions in the same
place.

 cache.h     |    6 ++++++
 sha1_file.c |    4 +---
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/cache.h b/cache.h
index bcc57ba..46eb2af 100644
--- a/cache.h
+++ b/cache.h
@@ -528,6 +528,12 @@ static inline void hashclr(unsigned char *hash)
 }
 extern int is_empty_blob_sha1(const unsigned char *sha1);
 
+#define EMPTY_TREE_SHA1_HEX \
+	"4b825dc642cb6eb9a060e54bf8d69288fbee4904"
+#define EMPTY_TREE_SHA1_BIN \
+	 "\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" \
+	 "\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04"
+
 int git_mkstemp(char *path, size_t n, const char *template);
 
 /*
diff --git a/sha1_file.c b/sha1_file.c
index 654d039..037e439 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -2056,9 +2056,7 @@ static struct cached_object {
 static int cached_object_nr, cached_object_alloc;
 
 static struct cached_object empty_tree = {
-	/* empty tree sha1: 4b825dc642cb6eb9a060e54bf8d69288fbee4904 */
-	"\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60"
-	"\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04",
+	EMPTY_TREE_SHA1_BIN,
 	OBJ_TREE,
 	"",
 	0

-- 
1.6.0.4.883.g4593ee.dirty