Asset Preferences: disallow single file as asset library

Asset libraries should be directories on disk. By manually entering a
file path it was possible to have a single blend file as asset library,
but that was not a designed-for situation, and it doesn't play well
with the asset catalog system.

1 files changed, 13 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/preferences.c b/source/blender/blenkernel/intern/preferences.c
index 0a10601f751..41046563f98 100644
--- a/source/blender/blenkernel/intern/preferences.c
+++ b/source/blender/blenkernel/intern/preferences.c
@@ -24,6 +24,7 @@
 
 #include "MEM_guardedalloc.h"
 
+#include "BLI_fileops.h"
 #include "BLI_listbase.h"
 #include "BLI_path_util.h"
 #include "BLI_string.h"
@@ -83,6 +84,18 @@ void BKE_preferences_asset_library_name_set(UserDef *userdef,
                  sizeof(library->name));
 }
 
+/* Set the library path, ensuring it is pointing to a directory.
+ * Single blend files can only act as "Current File" library; libraries on disk
+ * should always be directories. If the path does not exist, that's fine; it can
+ * created as directory if necessary later. */
+void BKE_preferences_asset_library_path_set(bUserAssetLibrary *library, const char *path)
+{
+  BLI_strncpy_utf8(library->path, path, sizeof(library->path));
+  if (BLI_is_file(library->path)) {
+    BLI_path_parent_dir(library->path);
+  }
+}
+
 bUserAssetLibrary *BKE_preferences_asset_library_find_from_index(const UserDef *userdef, int index)
 {
   return BLI_findlink(&userdef->asset_libraries, index);