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oid: Helper for old-school hashcmp

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This commit is contained in:
Vicent Marti 2013-08-14 10:34:07 +02:00
parent e2164da5eb
commit 59547ce772
2 changed files with 14 additions and 11 deletions
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23
src/oid.h
View File

@ -9,17 +9,8 @@
#include "git2/oid.h" #include "git2/oid.h"
/* GIT_INLINE(int) git_oid__hashcmp(const unsigned char *sha1, const unsigned char *sha2)
* Compare two oid structures.
*
* @param a first oid structure.
* @param b second oid structure.
* @return <0, 0, >0 if a < b, a == b, a > b.
*/
GIT_INLINE(int) git_oid__cmp(const git_oid *a, const git_oid *b)
{ {
const unsigned char *sha1 = a->id;
const unsigned char *sha2 = b->id;
int i; int i;
for (i = 0; i < GIT_OID_RAWSZ; i++, sha1++, sha2++) { for (i = 0; i < GIT_OID_RAWSZ; i++, sha1++, sha2++) {
@ -30,4 +21,16 @@ GIT_INLINE(int) git_oid__cmp(const git_oid *a, const git_oid *b)
return 0; return 0;
} }
/*
* Compare two oid structures.
*
* @param a first oid structure.
* @param b second oid structure.
* @return <0, 0, >0 if a < b, a == b, a > b.
*/
GIT_INLINE(int) git_oid__cmp(const git_oid *a, const git_oid *b)
{
return git_oid__hashcmp(a->id, b->id);
}
#endif #endif

2
src/sha1_lookup.c
View File

@ -187,7 +187,7 @@ int sha1_position(const void *table,
do { do {
unsigned mi = (lo + hi) / 2; unsigned mi = (lo + hi) / 2;
int cmp = git_oid__cmp((git_oid *)(base + mi * stride), (git_oid *)key); int cmp = git_oid__hashcmp(base + mi * stride, key);
if (!cmp) if (!cmp)
return mi; return mi;