1 files changed, 151 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/asset.c b/source/blender/blenkernel/intern/asset.c
new file mode 100644
index 00000000000..7ccb0aa2b57
--- /dev/null
+++ b/source/blender/blenkernel/intern/asset.c
@@ -0,0 +1,151 @@
+/*
+ * 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 <string.h>
+
+#include "BLI_listbase.h"
+#include "BLI_string.h"
+#include "BLI_string_utils.h"
+#include "BLI_utildefines.h"
+
+#include "BKE_asset.h"
+#include "BKE_icons.h"
+#include "BKE_idprop.h"
+
+#include "DNA_ID.h"
+#include "DNA_asset_types.h"
+#include "DNA_defaults.h"
+
+#include "BLO_read_write.h"
+
+#include "MEM_guardedalloc.h"
+
+AssetMetaData *BKE_asset_metadata_create(void)
+{
+  AssetMetaData *asset_data = MEM_callocN(sizeof(*asset_data), __func__);
+  memcpy(asset_data, DNA_struct_default_get(AssetMetaData), sizeof(*asset_data));
+  return asset_data;
+}
+
+void BKE_asset_metadata_free(AssetMetaData **asset_data)
+{
+  if ((*asset_data)->properties) {
+    IDP_FreeProperty((*asset_data)->properties);
+  }
+  MEM_SAFE_FREE((*asset_data)->description);
+  BLI_freelistN(&(*asset_data)->tags);
+
+  MEM_SAFE_FREE(*asset_data);
+}
+
+static AssetTag *asset_metadata_tag_add(AssetMetaData *asset_data, const char *const name)
+{
+  AssetTag *tag = MEM_callocN(sizeof(*tag), __func__);
+  BLI_strncpy(tag->name, name, sizeof(tag->name));
+
+  BLI_addtail(&asset_data->tags, tag);
+  asset_data->tot_tags++;
+  /* Invariant! */
+  BLI_assert(BLI_listbase_count(&asset_data->tags) == asset_data->tot_tags);
+
+  return tag;
+}
+
+AssetTag *BKE_asset_metadata_tag_add(AssetMetaData *asset_data, const char *name)
+{
+  AssetTag *tag = asset_metadata_tag_add(asset_data, name);
+  BLI_uniquename(&asset_data->tags, tag, name, '.', offsetof(AssetTag, name), sizeof(tag->name));
+  return tag;
+}
+
+/**
+ * Make sure there is a tag with name \a name, create one if needed.
+ */
+struct AssetTagEnsureResult BKE_asset_metadata_tag_ensure(AssetMetaData *asset_data,
+                                                          const char *name)
+{
+  struct AssetTagEnsureResult result = {.tag = NULL};
+  if (!name[0]) {
+    return result;
+  }
+
+  AssetTag *tag = BLI_findstring(&asset_data->tags, name, offsetof(AssetTag, name));
+
+  if (tag) {
+    result.tag = tag;
+    result.is_new = false;
+    return result;
+  }
+
+  tag = asset_metadata_tag_add(asset_data, name);
+
+  result.tag = tag;
+  result.is_new = true;
+  return result;
+}
+
+void BKE_asset_metadata_tag_remove(AssetMetaData *asset_data, AssetTag *tag)
+{
+  BLI_assert(BLI_findindex(&asset_data->tags, tag) >= 0);
+  BLI_freelinkN(&asset_data->tags, tag);
+  asset_data->tot_tags--;
+  /* Invariant! */
+  BLI_assert(BLI_listbase_count(&asset_data->tags) == asset_data->tot_tags);
+}
+
+/* Queries -------------------------------------------- */
+
+PreviewImage *BKE_asset_metadata_preview_get_from_id(const AssetMetaData *UNUSED(asset_data),
+                                                     const ID *id)
+{
+  return BKE_previewimg_id_get(id);
+}
+
+/* .blend file API -------------------------------------------- */
+
+void BKE_asset_metadata_write(BlendWriter *writer, AssetMetaData *asset_data)
+{
+  BLO_write_struct(writer, AssetMetaData, asset_data);
+
+  if (asset_data->properties) {
+    IDP_BlendWrite(writer, asset_data->properties);
+  }
+
+  if (asset_data->description) {
+    BLO_write_string(writer, asset_data->description);
+  }
+  LISTBASE_FOREACH (AssetTag *, tag, &asset_data->tags) {
+    BLO_write_struct(writer, AssetTag, tag);
+  }
+}
+
+void BKE_asset_metadata_read(BlendDataReader *reader, AssetMetaData *asset_data)
+{
+  /* asset_data itself has been read already. */
+
+  if (asset_data->properties) {
+    BLO_read_data_address(reader, &asset_data->properties);
+    IDP_BlendDataRead(reader, &asset_data->properties);
+  }
+
+  BLO_read_data_address(reader, &asset_data->description);
+  BLO_read_list(reader, &asset_data->tags);
+  BLI_assert(BLI_listbase_count(&asset_data->tags) == asset_data->tot_tags);
+}