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109 lines
2.9 KiB
C
109 lines
2.9 KiB
C
/*
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* Copyright (C) the libgit2 contributors. All rights reserved.
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*
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* This file is part of libgit2, distributed under the GNU GPL v2 with
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* a Linking Exception. For full terms see the included COPYING file.
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*/
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#ifndef INCLUDE_git_refdb_backend_h__
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#define INCLUDE_git_refdb_backend_h__
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#include "common.h"
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#include "types.h"
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#include "oid.h"
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/**
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* @file git2/refdb_backend.h
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* @brief Git custom refs backend functions
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* @defgroup git_refdb_backend Git custom refs backend API
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* @ingroup Git
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* @{
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*/
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GIT_BEGIN_DECL
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/** An instance for a custom backend */
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struct git_refdb_backend {
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unsigned int version;
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/**
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* Queries the refdb backend to determine if the given ref_name
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* exists. A refdb implementation must provide this function.
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*/
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int (*exists)(
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int *exists,
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struct git_refdb_backend *backend,
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const char *ref_name);
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/**
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* Queries the refdb backend for a given reference. A refdb
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* implementation must provide this function.
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*/
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int (*lookup)(
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git_reference **out,
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struct git_refdb_backend *backend,
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const char *ref_name);
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/**
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* Enumerates each reference in the refdb. A refdb implementation must
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* provide this function.
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*/
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int (*foreach)(
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struct git_refdb_backend *backend,
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unsigned int list_flags,
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git_reference_foreach_cb callback,
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void *payload);
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/**
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* Enumerates each reference in the refdb that matches the given
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* glob string. A refdb implementation may provide this function;
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* if it is not provided, foreach will be used and the results filtered
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* against the glob.
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*/
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int (*foreach_glob)(
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struct git_refdb_backend *backend,
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const char *glob,
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unsigned int list_flags,
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git_reference_foreach_cb callback,
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void *payload);
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/**
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* Writes the given reference to the refdb. A refdb implementation
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* must provide this function.
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*/
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int (*write)(struct git_refdb_backend *backend, const git_reference *ref);
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/**
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* Deletes the given reference from the refdb. A refdb implementation
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* must provide this function.
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*/
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int (*delete)(struct git_refdb_backend *backend, const git_reference *ref);
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/**
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* Suggests that the given refdb compress or optimize its references.
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* This mechanism is implementation specific. (For on-disk reference
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* databases, this may pack all loose references.) A refdb
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* implementation may provide this function; if it is not provided,
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* nothing will be done.
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*/
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int (*compress)(struct git_refdb_backend *backend);
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/**
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* Frees any resources held by the refdb. A refdb implementation may
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* provide this function; if it is not provided, nothing will be done.
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*/
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void (*free)(struct git_refdb_backend *backend);
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};
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#define GIT_ODB_BACKEND_VERSION 1
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#define GIT_ODB_BACKEND_INIT {GIT_ODB_BACKEND_VERSION}
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/**
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* Constructors for default refdb backends.
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*/
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GIT_EXTERN(int) git_refdb_backend_fs(
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struct git_refdb_backend **backend_out,
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git_repository *repo);
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GIT_END_DECL
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#endif
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