blob.c

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Hash : 72a3fe42
Author :
Date : 2011-03-18T19:38:49

I broke your bindings Hey. Apologies in advance -- I broke your bindings. This is a major commit that includes a long-overdue redesign of the whole object-database structure. This is expected to be the last major external API redesign of the library until the first non-alpha release. Please get your bindings up to date with these changes. They will be included in the next minor release. Sorry again! Major features include: - Real caching and refcounting on parsed objects - Real caching and refcounting on objects read from the ODB - Streaming writes & reads from the ODB - Single-method writes for all object types - The external API is now partially thread-safe The speed increases are significant in all aspects, specially when reading an object several times from the ODB (revwalking) and when writing big objects to the ODB. Here's a full changelog for the external API: blob.h ------ - Remove `git_blob_new` - Remove `git_blob_set_rawcontent` - Remove `git_blob_set_rawcontent_fromfile` - Rename `git_blob_writefile` -> `git_blob_create_fromfile` - Change `git_blob_create_fromfile`: The `path` argument is now relative to the repository's working dir - Add `git_blob_create_frombuffer` commit.h -------- - Remove `git_commit_new` - Remove `git_commit_add_parent` - Remove `git_commit_set_message` - Remove `git_commit_set_committer` - Remove `git_commit_set_author` - Remove `git_commit_set_tree` - Add `git_commit_create` - Add `git_commit_create_v` - Add `git_commit_create_o` - Add `git_commit_create_ov` tag.h ----- - Remove `git_tag_new` - Remove `git_tag_set_target` - Remove `git_tag_set_name` - Remove `git_tag_set_tagger` - Remove `git_tag_set_message` - Add `git_tag_create` - Add `git_tag_create_o` tree.h ------ - Change `git_tree_entry_2object`: New signature is `(git_object **object_out, git_repository *repo, git_tree_entry *entry)` - Remove `git_tree_new` - Remove `git_tree_add_entry` - Remove `git_tree_remove_entry_byindex` - Remove `git_tree_remove_entry_byname` - Remove `git_tree_clearentries` - Remove `git_tree_entry_set_id` - Remove `git_tree_entry_set_name` - Remove `git_tree_entry_set_attributes` object.h ------------ - Remove `git_object_new - Remove `git_object_write` - Change `git_object_close`: This method is now *mandatory*. Not closing an object causes a memory leak. odb.h ----- - Remove type `git_rawobj` - Remove `git_rawobj_close` - Rename `git_rawobj_hash` -> `git_odb_hash` - Change `git_odb_hash`: New signature is `(git_oid *id, const void *data, size_t len, git_otype type)` - Add type `git_odb_object` - Add `git_odb_object_close` - Change `git_odb_read`: New signature is `(git_odb_object **out, git_odb *db, const git_oid *id)` - Change `git_odb_read_header`: New signature is `(size_t *len_p, git_otype *type_p, git_odb *db, const git_oid *id)` - Remove `git_odb_write` - Add `git_odb_open_wstream` - Add `git_odb_open_rstream` odb_backend.h ------------- - Change type `git_odb_backend`: New internal signatures are as follows int (* read)(void **, size_t *, git_otype *, struct git_odb_backend *, const git_oid *) int (* read_header)(size_t *, git_otype *, struct git_odb_backend *, const git_oid *) int (* writestream)(struct git_odb_stream **, struct git_odb_backend *, size_t, git_otype) int (* readstream)( struct git_odb_stream **, struct git_odb_backend *, const git_oid *) - Add type `git_odb_stream` - Add enum `git_odb_streammode` Signed-off-by: Vicent Marti <tanoku@gmail.com>

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 void *git_blob_rawcontent(git_blob *blob)
{
	assert(blob);
	return blob->odb_object->raw.data;
}

int git_blob_rawsize(git_blob *blob)
{
	assert(blob);
	return blob->odb_object->raw.len;
}

void git_blob__free(git_blob *blob)
{
	git_odb_object_close(blob->odb_object);
	free(blob);
}

int git_blob__parse(git_blob *blob, git_odb_object *odb_obj)
{
	assert(blob);
	git_cached_obj_incref((git_cached_obj *)odb_obj);
	blob->odb_object = odb_obj;
	return GIT_SUCCESS;
}

int git_blob_create_frombuffer(git_oid *oid, git_repository *repo, const void *buffer, size_t len)
{
	int error;
	git_odb_stream *stream;

	if ((error = git_odb_open_wstream(&stream, repo->db, len, GIT_OBJ_BLOB)) < GIT_SUCCESS)
		return error;

	stream->write(stream, buffer, len);

	error = stream->finalize_write(oid, stream);
	stream->free(stream);

	return error;
}

int git_blob_create_fromfile(git_oid *oid, git_repository *repo, const char *path)
{
	int error, fd;
	char full_path[GIT_PATH_MAX];
	char buffer[2048];
	git_off_t size;
	git_odb_stream *stream;

	if (repo->path_workdir == NULL)
		return GIT_ENOTFOUND;

	git__joinpath(full_path, repo->path_workdir, path);

	if ((fd = gitfo_open(full_path, O_RDONLY)) < 0)
		return GIT_ENOTFOUND;

	if ((size = gitfo_size(fd)) < 0 || !git__is_sizet(size)) {
		gitfo_close(fd);
		return GIT_EOSERR;
	}

	if ((error = git_odb_open_wstream(&stream, repo->db, (size_t)size, GIT_OBJ_BLOB)) < GIT_SUCCESS) {
		gitfo_close(fd);
		return error;
	}

	while (size > 0) {
		ssize_t read_len;

		read_len = read(fd, buffer, sizeof(buffer));

		if (read_len < 0) {
			gitfo_close(fd);
			stream->free(stream);
			return GIT_EOSERR;
		}

		stream->write(stream, buffer, read_len);
		size -= read_len;
	}

	error = stream->finalize_write(oid, stream);
	stream->free(stream);

	return error;
}

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src/blob.c