/*
 * Copyright (C) 2009-2012 the libgit2 contributors
 *
 * 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_hash_h__
#define INCLUDE_hash_h__

#include "git2/oid.h"

typedef struct git_hash_prov git_hash_prov;
typedef struct git_hash_ctx git_hash_ctx;

int git_hash_global_init(void);
void git_hash_global_shutdown(void);

int git_hash_ctx_init(git_hash_ctx *ctx);
void git_hash_ctx_cleanup(git_hash_ctx *ctx);

#if defined(OPENSSL_SHA1)
# include "hash/hash_openssl.h"
#elif defined(WIN32_SHA1)
# include "hash/hash_win32.h"
#elif defined(PPC_SHA1)
# include "hash/hash_ppc.h"
#else
# include "hash/hash_generic.h"
#endif

typedef struct {
	void *data;
	size_t len;
} git_buf_vec;

int git_hash_init(git_hash_ctx *c);
int git_hash_update(git_hash_ctx *c, const void *data, size_t len);
int git_hash_final(git_oid *out, git_hash_ctx *c);

int git_hash_buf(git_oid *out, const void *data, size_t len);
int git_hash_vec(git_oid *out, git_buf_vec *vec, size_t n);

#endif /* INCLUDE_hash_h__ */
