# [PATCH] refactor commit_graft_pos using general sha1_pos function

2 messages from 2010-02-26 to 2010-02-26. Participants: jackylee, Tay Ray Chuan.
Thread: https://gitlist.dev/t/22827

## Tay Ray Chuan, 2010-02-26 03:04

Subject: Re: [PATCH] refactor commit_graft_pos using general sha1_pos function
Message-ID: <be6fef0d1002251904q59e12149lc3010b3587b00f8c@mail.gmail.com>
URL: https://gitlist.dev/e/be6fef0d1002251904q59e12149lc3010b3587b00f8c%40mail.gmail.com
In-Reply-To: <4B87EBD2.3060007@gmail.com>

```
Hi,

On Fri, Feb 26, 2010 at 11:42 PM, jackylee <jacky.liye@gmail.com> wrote:
> code cleanup according to git janitor page, replace sha1 lookup function with "sha1_pos" general binary search function
>
> Signed-off-by: jacky.liye <jacky.liye@gmail.com>

please sign off with your real name. See

  http://repo.or.cz/w/git.git?a=blob;f=Documentation/SubmittingPatches;hb=HEAD

for the importance of the sign-off.

-- 
Cheers,
Ray Chuan

```

## jackylee, 2010-02-26 15:42

Subject: [PATCH] refactor commit_graft_pos using general sha1_pos function
Message-ID: <4B87EBD2.3060007@gmail.com>
URL: https://gitlist.dev/e/4B87EBD2.3060007%40gmail.com

```
code cleanup according to git janitor page, replace sha1 lookup function with "sha1_pos" general binary search function

Signed-off-by: jacky.liye <jacky.liye@gmail.com>
---
 commit.c |   23 +++++++----------------
 1 files changed, 7 insertions(+), 16 deletions(-)

diff --git a/commit.c b/commit.c
index 731191e..c44d091 100644
--- a/commit.c
+++ b/commit.c
@@ -6,6 +6,7 @@
 #include "diff.h"
 #include "revision.h"
 #include "notes.h"
+#include "sha1-lookup.h"
 
 int save_commit_buffer = 1;
 
@@ -78,24 +79,14 @@ static unsigned long parse_commit_date(const char *buf, const char *tail)
 
 static struct commit_graft **commit_graft;
 static int commit_graft_alloc, commit_graft_nr;
-
+static const unsigned char *commit_graft_access(size_t index, void *table)
+{
+	struct commit_graft **grafts = table;
+	return (const unsigned char *)grafts[index];
+}
 static int commit_graft_pos(const unsigned char *sha1)
 {
-	int lo, hi;
-	lo = 0;
-	hi = commit_graft_nr;
-	while (lo < hi) {
-		int mi = (lo + hi) / 2;
-		struct commit_graft *graft = commit_graft[mi];
-		int cmp = hashcmp(sha1, graft->sha1);
-		if (!cmp)
-			return mi;
-		if (cmp < 0)
-			hi = mi;
-		else
-			lo = mi + 1;
-	}
-	return -lo - 1;
+	return sha1_pos(sha1, commit_graft, commit_graft_nr, commit_graft_access);
 }
 
 int register_commit_graft(struct commit_graft *graft, int ignore_dups)
-- 
1.6.3.3

```
