[libgit2.git] / src / oid.h

/*
 * Copyright (C) the libgit2 contributors. All rights reserved.
 *
 * This file is part of libgit2, distributed under the GNU GPL v2 with
 * a Linking Exception. For full terms see the included COPYING file.
 */
#ifndef INCLUDE_oid_h__
#define INCLUDE_oid_h__

#include "git2/oid.h"

/*
 * 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;

	for (i = 0; i < GIT_OID_RAWSZ; i++, sha1++, sha2++) {
		if (*sha1 != *sha2)
			return *sha1 - *sha2;
	}

	return 0;
}

#endif
Commit	Line	Data
e4af0f00 RB	1	/*
	2	* Copyright (C) the libgit2 contributors. All rights reserved.
	3	*
	4	* This file is part of libgit2, distributed under the GNU GPL v2 with
	5	* a Linking Exception. For full terms see the included COPYING file.
	6	*/
	7	#ifndef INCLUDE_oid_h__
	8	#define INCLUDE_oid_h__
	9
	10	#include "git2/oid.h"
	11
	12	/*
	13	* Compare two oid structures.
	14	*
	15	* @param a first oid structure.
	16	* @param b second oid structure.
	17	* @return <0, 0, >0 if a < b, a == b, a > b.
	18	*/
	19	GIT_INLINE(int) git_oid__cmp(const git_oid a, const git_oid b)
	20	{
	21	const unsigned char *sha1 = a->id;
	22	const unsigned char *sha2 = b->id;
	23	int i;
	24
	25	for (i = 0; i < GIT_OID_RAWSZ; i++, sha1++, sha2++) {
	26	if (sha1 != sha2)
	27	return sha1 - sha2;
	28	}
	29
	30	return 0;
	31	}
	32
	33	#endif