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/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* 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_git_refdb_h__
#define INCLUDE_git_refdb_h__
#include "common.h"
#include "types.h"
#include "oid.h"
#include "refs.h"
/**
* @file git2/refdb.h
* @brief Git custom refs backend functions
* @defgroup git_refdb Git custom refs backend API
* @ingroup Git
* @{
*/
GIT_BEGIN_DECL
/**
* Create a new reference. Either an oid or a symbolic target must be
* specified.
*
* @param refdb the reference database to associate with this reference
* @param name the reference name
* @param oid the object id for a direct reference
* @param symbolic the target for a symbolic reference
* @return the created git_reference or NULL on error
*/
GIT_EXTERN(git_reference *) git_reference__alloc(
git_refdb *refdb,
const char *name,
const git_oid *oid,
const char *symbolic);
/**
* Create a new reference database with no backends.
*
* Before the Ref DB can be used for read/writing, a custom database
* backend must be manually set using `git_refdb_set_backend()`
*
* @param out location to store the database pointer, if opened.
* Set to NULL if the open failed.
* @param repo the repository
* @return 0 or an error code
*/
GIT_EXTERN(int) git_refdb_new(git_refdb **out, git_repository *repo);
/**
* Create a new reference database and automatically add
* the default backends:
*
* - git_refdb_dir: read and write loose and packed refs
* from disk, assuming the repository dir as the folder
*
* @param out location to store the database pointer, if opened.
* Set to NULL if the open failed.
* @param repo the repository
* @return 0 or an error code
*/
GIT_EXTERN(int) git_refdb_open(git_refdb **out, git_repository *repo);
/**
* Suggests that the given refdb compress or optimize its references.
* This mechanism is implementation specific. For on-disk reference
* databases, for example, this may pack all loose references.
*/
GIT_EXTERN(int) git_refdb_compress(git_refdb *refdb);
/**
* Close an open reference database.
*
* @param refdb reference database pointer or NULL
*/
GIT_EXTERN(void) git_refdb_free(git_refdb *refdb);
/**
* Sets the custom backend to an existing reference DB
*
* Read <refdb_backends.h> for more information.
*
* @param refdb database to add the backend to
* @param backend pointer to a git_refdb_backend instance
* @param priority Value for ordering the backends queue
* @return 0 on success; error code otherwise
*/
GIT_EXTERN(int) git_refdb_set_backend(
git_refdb *refdb,
git_refdb_backend *backend);
/** @} */
GIT_END_DECL
#endif
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