thodg/libgit2/src/hash.c

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• Hash : 5e0de328
  Author :
  Date : 2012-02-13T17:10:24
  

  Update Copyright header Signed-off-by: schu <schu-github@schulog.org>

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• src/hash.c

• /*
   * 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.
   */
  
  #include "common.h"
  #include "hash.h"
  
  #if defined(PPC_SHA1)
  # include "ppc/sha1.h"
  #else
  # include "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)
  {
  	git__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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