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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.
*/
#include "common.h"
#include "posix.h"
#include "git2/object.h"
#include "git2/refs.h"
#include "git2/refdb.h"
#include "git2/sys/refdb_backend.h"
#include "hash.h"
#include "refdb.h"
#include "refs.h"
int git_refdb_new(git_refdb **out, git_repository *repo)
{
git_refdb *db;
assert(out && repo);
db = git__calloc(1, sizeof(*db));
GITERR_CHECK_ALLOC(db);
db->repo = repo;
*out = db;
GIT_REFCOUNT_INC(db);
return 0;
}
int git_refdb_open(git_refdb **out, git_repository *repo)
{
git_refdb *db;
git_refdb_backend *dir;
assert(out && repo);
*out = NULL;
if (git_refdb_new(&db, repo) < 0)
return -1;
/* Add the default (filesystem) backend */
if (git_refdb_backend_fs(&dir, repo) < 0) {
git_refdb_free(db);
return -1;
}
db->repo = repo;
db->backend = dir;
*out = db;
return 0;
}
static void refdb_free_backend(git_refdb *db)
{
if (db->backend) {
if (db->backend->free)
db->backend->free(db->backend);
else
git__free(db->backend);
}
}
int git_refdb_set_backend(git_refdb *db, git_refdb_backend *backend)
{
refdb_free_backend(db);
db->backend = backend;
return 0;
}
int git_refdb_compress(git_refdb *db)
{
assert(db);
if (db->backend->compress)
return db->backend->compress(db->backend);
return 0;
}
static void refdb_free(git_refdb *db)
{
refdb_free_backend(db);
git__free(db);
}
void git_refdb_free(git_refdb *db)
{
if (db == NULL)
return;
GIT_REFCOUNT_DEC(db, refdb_free);
}
int git_refdb_exists(int *exists, git_refdb *refdb, const char *ref_name)
{
assert(exists && refdb && refdb->backend);
return refdb->backend->exists(exists, refdb->backend, ref_name);
}
int git_refdb_lookup(git_reference **out, git_refdb *db, const char *ref_name)
{
git_reference *ref;
int error;
assert(db && db->backend && out && ref_name);
if (!(error = db->backend->lookup(&ref, db->backend, ref_name))) {
ref->db = db;
*out = ref;
} else {
*out = NULL;
}
return error;
}
int git_refdb_iterator(git_reference_iterator **out, git_refdb *db)
{
if (!db->backend || !db->backend->iterator) {
giterr_set(GITERR_REFERENCE, "This backend doesn't support iterators");
return -1;
}
if (db->backend->iterator(out, db->backend) < 0)
return -1;
return 0;
}
int git_refdb_iterator_glob(git_reference_iterator **out, git_refdb *db, const char *glob)
{
if (!db->backend) {
giterr_set(GITERR_REFERENCE, "There are no backends loaded");
return -1;
}
if (db->backend->iterator_glob)
return db->backend->iterator_glob(out, db->backend, glob);
/* If the backend doesn't support glob-filtering themselves, we have to do it */
if (db->backend->iterator(out, db->backend) < 0)
return -1;
(*out)->glob = git__strdup(glob);
if (!(*out)->glob) {
db->backend->iterator_free(*out);
return -1;
}
return 0;
}
int git_refdb_next(const char **out, git_reference_iterator *iter)
{
int error;
if (!iter->glob)
return iter->backend->next(out, iter);
/* If the iterator has a glob, we need to filter */
while ((error = iter->backend->next(out, iter)) == 0) {
if (!p_fnmatch(iter->glob, *out, 0))
break;
}
return error;
}
void git_refdb_iterator_free(git_reference_iterator *iter)
{
git__free(iter->glob);
iter->backend->iterator_free(iter);
}
struct glob_cb_data {
const char *glob;
git_reference_foreach_cb callback;
void *payload;
};
int git_refdb_write(git_refdb *db, const git_reference *ref)
{
assert(db && db->backend);
return db->backend->write(db->backend, ref);
}
int git_refdb_delete(struct git_refdb *db, const git_reference *ref)
{
assert(db && db->backend);
return db->backend->delete(db->backend, ref);
}
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