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/*
* 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 "common.h"
#include "repository.h"
#include "commit.h"
#include "tag.h"
static const int default_table_size = 32;
static const double max_load_factor = 0.65;
uint32_t git_repository_object_hash(const void *key)
{
uint32_t r;
git_oid *id;
id = (git_oid *)key;
memcpy(&r, id->id, sizeof(r));
return r;
}
int git_repository_object_haskey(void *object, const void *key)
{
git_repository_object *obj;
git_oid *oid;
obj = (git_repository_object *)object;
oid = (git_oid *)key;
return (git_oid_cmp(oid, &obj->id) == 0);
}
git_repository *git_repository_alloc(git_odb *odb)
{
git_repository *repo = git__malloc(sizeof(git_repository));
if (!repo)
return NULL;
memset(repo, 0x0, sizeof(git_repository));
repo->objects = git_hashtable_alloc(
default_table_size,
git_repository_object_hash,
git_repository_object_haskey);
if (repo->objects == NULL) {
free(repo);
return NULL;
}
repo->db = odb; /* TODO: create ODB manually! */
return repo;
}
void git_repository_free(git_repository *repo)
{
git_hashtable_iterator it;
git_repository_object *object;
git_hashtable_iterator_init(repo->objects, &it);
while ((object = (git_repository_object *)
git_hashtable_iterator_next(&it)) != NULL)
git_repository_object_free(object);
git_hashtable_free(repo->objects);
/* TODO: free odb */
free(repo);
}
int git_repository__open_dbo(git_repository_object *object)
{
int error;
if (object->dbo_open)
return GIT_SUCCESS;
error = git_odb_read(&object->dbo, object->repo->db, &object->id);
if (error < 0)
return error;
object->dbo_open = 1;
return GIT_SUCCESS;
}
void git_repository__close_dbo(git_repository_object *object)
{
if (!object->dbo_open) {
git_obj_close(&object->dbo);
object->dbo_open = 0;
}
}
void git_repository_object_free(git_repository_object *object)
{
git_hashtable_remove(object->repo->objects, &object->id);
git_obj_close(&object->dbo);
switch (object->dbo.type) {
case GIT_OBJ_COMMIT:
git_commit__free((git_commit *)object);
break;
case GIT_OBJ_TREE:
git_tree__free((git_tree *)object);
break;
case GIT_OBJ_TAG:
git_tag__free((git_tag *)object);
break;
default:
free(object);
break;
}
}
git_odb *git_repository_database(git_repository *repo)
{
assert(repo);
return repo->db;
}
const git_oid *git_repository_object_id(git_repository_object *obj)
{
assert(obj);
return &obj->id;
}
git_otype git_repository_object_type(git_repository_object *obj)
{
assert(obj);
return obj->dbo.type;
}
git_repository_object *git_repository_lookup(git_repository *repo, const git_oid *id, git_otype type)
{
static const size_t object_sizes[] = {
0,
sizeof(git_commit),
sizeof(git_tree),
sizeof(git_repository_object), /* TODO: sizeof(git_blob) */
sizeof(git_tag)
};
git_repository_object *object = NULL;
git_obj obj_file;
assert(repo);
object = git_hashtable_lookup(repo->objects, id);
if (object != NULL)
return object;
if (git_odb_read(&obj_file, repo->db, id) < 0)
return NULL;
if (type != GIT_OBJ_ANY && type != obj_file.type)
return NULL;
type = obj_file.type;
object = git__malloc(object_sizes[type]);
if (object == NULL)
return NULL;
memset(object, 0x0, object_sizes[type]);
/* Initialize parent object */
git_oid_cpy(&object->id, id);
object->repo = repo;
object->dbo_open = 1;
memcpy(&object->dbo, &obj_file, sizeof(git_obj));
switch (type) {
case GIT_OBJ_COMMIT:
if (git_commit__parse_basic((git_commit *)object) < 0) {
free(object);
return NULL;
}
break;
case GIT_OBJ_TREE:
if (git_tree__parse((git_tree *)object) < 0) {
free(object);
return NULL;
}
break;
case GIT_OBJ_TAG:
if (git_tag__parse((git_tag *)object) < 0) {
free(object);
return NULL;
}
break;
default:
/* blobs get no parsing */
break;
}
git_obj_close(&object->dbo);
object->dbo_open = 0;
git_hashtable_insert(repo->objects, &object->id, object);
return object;
}
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