thodg/libgit2/src/blob.c

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• Hash : 48c27f86
  Author :
  Date : 2011-02-28T16:51:17
  

  Implement reference counting for git_objects All `git_object` instances looked up from the repository are reference counted. User is expected to use the new `git_object_close` when an object is no longer needed to force freeing it. Signed-off-by: Vicent Marti <tanoku@gmail.com>

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• src/blob.c

• /*
   * 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 "git2/common.h"
  #include "git2/object.h"
  #include "git2/repository.h"
  
  #include "common.h"
  #include "blob.h"
  
  const char *git_blob_rawcontent(git_blob *blob)
  {
  	assert(blob);
  	
  	if (blob->content.data != NULL)
  		return blob->content.data;
  
  	if (blob->object.in_memory)
  		return NULL;
  
  	if (!blob->object.source.open && git_object__source_open((git_object *)blob) < GIT_SUCCESS)
  		return NULL;
  
  	return blob->object.source.raw.data;
  }
  
  int git_blob_rawsize(git_blob *blob)
  {
  	assert(blob);
  
  	if (blob->content.data != NULL)
  		return blob->content.len;
  
  	return blob->object.source.raw.len;
  }
  
  void git_blob__free(git_blob *blob)
  {
  	gitfo_free_buf(&blob->content);
  	free(blob);
  }
  
  int git_blob__parse(git_blob *blob)
  {
  	assert(blob);
  	return GIT_SUCCESS;
  }
  
  int git_blob__writeback(git_blob *blob, git_odb_source *src)
  {
  	assert(blob->object.modified);
  
  	if (blob->content.data == NULL)
  		return GIT_EMISSINGOBJDATA;
  
  	return git__source_write(src, blob->content.data, blob->content.len);
  }
  
  int git_blob_set_rawcontent(git_blob *blob, const void *buffer, size_t len)
  {
  	assert(blob && buffer);
  
  	blob->object.modified = 1;
  
  	git_object__source_close((git_object *)blob);
  
  	if (blob->content.data != NULL)
  		gitfo_free_buf(&blob->content);
  
  	blob->content.data = git__malloc(len);
  	blob->content.len = len;
  
  	if (blob->content.data == NULL)
  		return GIT_ENOMEM;
  
  	memcpy(blob->content.data, buffer, len);
  
  	return GIT_SUCCESS;
  }
  
  int git_blob_set_rawcontent_fromfile(git_blob *blob, const char *filename)
  {
  	assert(blob && filename);
  	blob->object.modified = 1;
  
  	if (blob->content.data != NULL)
  		gitfo_free_buf(&blob->content);
  
  	return gitfo_read_file(&blob->content, filename);
  }
  
  int git_blob_writefile(git_oid *written_id, git_repository *repo, const char *path)
  {
  	int error;
  	git_blob *blob;
  
  	if (gitfo_exists(path) < 0)
  		return GIT_ENOTFOUND;
  
  	if ((error = git_blob_new(&blob, repo)) < GIT_SUCCESS)
  		return error;
  
  	if ((error = git_blob_set_rawcontent_fromfile(blob, path)) < GIT_SUCCESS)
  		return error;
  
  	if ((error = git_object_write((git_object *)blob)) < GIT_SUCCESS)
  		return error;
  
  	git_oid_cpy(written_id, git_object_id((git_object *)blob));
  
  	/* FIXME: maybe we don't want to free this already?
  	 * the user may want to access it again */
  	git_object_close((git_object *)blob);
  	return GIT_SUCCESS;
  }
  
  

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