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/*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2,
* as published by the Free Software Foundation.
*
* In addition to the permissions in the GNU General Public License,
* the authors give you unlimited permission to link the compiled
* version of this file into combinations with other programs,
* and to distribute those combinations without any restriction
* coming from the use of this file. (The General Public License
* restrictions do apply in other respects; for example, they cover
* modification of the file, and distribution when not linked into
* a combined executable.)
*
* This file is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "common.h"
#include "hash.h"
#if defined(PPC_SHA1)
# include "ppc/sha1.h"
#elif defined(OPENSSL_SHA1)
# include <openssl/sha.h>
#else
# include "block-sha1/sha1.h"
#endif
struct git_hash_ctx {
SHA_CTX c;
};
git_hash_ctx *git_hash_new_ctx(void)
{
git_hash_ctx *ctx = git__malloc(sizeof(*ctx));
if (!ctx)
return NULL;
SHA1_Init(&ctx->c);
return ctx;
}
void git_hash_free_ctx(git_hash_ctx *ctx)
{
free(ctx);
}
void git_hash_init(git_hash_ctx *ctx)
{
assert(ctx);
SHA1_Init(&ctx->c);
}
void git_hash_update(git_hash_ctx *ctx, const void *data, size_t len)
{
assert(ctx);
SHA1_Update(&ctx->c, data, len);
}
void git_hash_final(git_oid *out, git_hash_ctx *ctx)
{
assert(ctx);
SHA1_Final(out->id, &ctx->c);
}
void git_hash_buf(git_oid *out, const void *data, size_t len)
{
SHA_CTX c;
SHA1_Init(&c);
SHA1_Update(&c, data, len);
SHA1_Final(out->id, &c);
}
void git_hash_vec(git_oid *out, git_buf_vec *vec, size_t n)
{
SHA_CTX c;
size_t i;
SHA1_Init(&c);
for (i = 0; i < n; i++)
SHA1_Update(&c, vec[i].data, vec[i].len);
SHA1_Final(out->id, &c);
}
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