test/source/blender/blenkernel/intern/asset_library.cc

/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

/** \file
 * \ingroup bke
 */

#include "BKE_asset_library.hh"
#include "BKE_callbacks.h"
#include "BKE_main.h"
#include "BKE_preferences.h"

#include "BLI_path_util.h"

#include "DNA_userdef_types.h"

#include "MEM_guardedalloc.h"

#include <memory>

/**
 * Loading an asset library at this point only means loading the catalogs. Later on this should
 * invoke reading of asset representations too.
 */
struct AssetLibrary *BKE_asset_library_load(const char *library_path)
{
  blender::bke::AssetLibrary *lib = new blender::bke::AssetLibrary();
  lib->on_save_handler_register();
  lib->load(library_path);
  return reinterpret_cast<struct AssetLibrary *>(lib);
}

void BKE_asset_library_free(struct AssetLibrary *asset_library)
{
  blender::bke::AssetLibrary *lib = reinterpret_cast<blender::bke::AssetLibrary *>(asset_library);
  lib->on_save_handler_unregister();
  delete lib;
}

bool BKE_asset_library_find_suitable_root_path_from_path(const char *input_path,
                                                         char *r_library_path)
{
  if (bUserAssetLibrary *preferences_lib = BKE_preferences_asset_library_containing_path(
          &U, input_path)) {
    BLI_strncpy(r_library_path, preferences_lib->path, FILE_MAXDIR);
    return true;
  }

  BLI_split_dir_part(input_path, r_library_path, FILE_MAXDIR);
  return r_library_path[0] != '\0';
}

bool BKE_asset_library_find_suitable_root_path_from_main(const Main *bmain, char *r_library_path)
{
  return BKE_asset_library_find_suitable_root_path_from_path(bmain->name, r_library_path);
}

blender::bke::AssetCatalogService *BKE_asset_library_get_catalog_service(
    const ::AssetLibrary *library_c)
{
  if (library_c == nullptr) {
    return nullptr;
  }

  const blender::bke::AssetLibrary &library = reinterpret_cast<const blender::bke::AssetLibrary &>(
      *library_c);
  return library.catalog_service.get();
}

blender::bke::AssetCatalogTree *BKE_asset_library_get_catalog_tree(const ::AssetLibrary *library)
{
  blender::bke::AssetCatalogService *catalog_service = BKE_asset_library_get_catalog_service(
      library);
  if (catalog_service == nullptr) {
    return nullptr;
  }

  return catalog_service->get_catalog_tree();
}

namespace blender::bke {

void AssetLibrary::load(StringRefNull library_root_directory)
{
  auto catalog_service = std::make_unique<AssetCatalogService>(library_root_directory);
  catalog_service->load_from_disk();
  this->catalog_service = std::move(catalog_service);
}

namespace {
void asset_library_on_save_post(struct Main *main,
                                struct PointerRNA **pointers,
                                const int num_pointers,
                                void *arg)
{
  AssetLibrary *asset_lib = static_cast<AssetLibrary *>(arg);
  asset_lib->on_save_post(main, pointers, num_pointers);
}
}  // namespace

void AssetLibrary::on_save_handler_register()
{
  /* The callback system doesn't own `on_save_callback_store_`. */
  on_save_callback_store_.alloc = false;

  on_save_callback_store_.func = asset_library_on_save_post;
  on_save_callback_store_.arg = this;

  BKE_callback_add(&on_save_callback_store_, BKE_CB_EVT_SAVE_POST);
}

void AssetLibrary::on_save_handler_unregister()
{
  BKE_callback_remove(&on_save_callback_store_, BKE_CB_EVT_SAVE_POST);
}

void AssetLibrary::on_save_post(struct Main *main,
                                struct PointerRNA ** /*pointers*/,
                                const int /*num_pointers*/)
{
  if (this->catalog_service == nullptr) {
    return;
  }

  this->catalog_service->write_to_disk_on_blendfile_save(main->name);
}

}  // namespace blender::bke