BKE Preferences: find asset library containing a path

Add `BKE_preferences_asset_library_containing_path(&U, some_path)` that
finds the asset library that contains the given path.

This is a simple linear search, returning the first asset library that
matches. There is no smartness when it comes to nested asset libraries
(like returning the library with the best-matching path), although this
could be a useful feature to add later.

2 files changed, 23 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_preferences.h b/source/blender/blenkernel/BKE_preferences.h
index acba2048614..bd887c1ea0d 100644
--- a/source/blender/blenkernel/BKE_preferences.h
+++ b/source/blender/blenkernel/BKE_preferences.h
@@ -43,6 +43,18 @@ struct bUserAssetLibrary *BKE_preferences_asset_library_find_from_index(
     const struct UserDef *userdef, int index) ATTR_NONNULL() ATTR_WARN_UNUSED_RESULT;
 struct bUserAssetLibrary *BKE_preferences_asset_library_find_from_name(
     const struct UserDef *userdef, const char *name) ATTR_NONNULL() ATTR_WARN_UNUSED_RESULT;
+
+/**
+ * Return the bUserAssetLibrary that contains the given file/directory path. The given path can be
+ * the library's top-level directory, or any path inside that directory.
+ *
+ * When more than one asset libraries match, the first matching one is returned (no smartness when
+ * there nested asset libraries).
+ *
+ * Return NULL when no such asset library is found. */
+struct bUserAssetLibrary *BKE_preferences_asset_library_containing_path(
+    const struct UserDef *userdef, const char *path) ATTR_NONNULL() ATTR_WARN_UNUSED_RESULT;
+
 int BKE_preferences_asset_library_get_index(const struct UserDef *userdef,
                                             const struct bUserAssetLibrary *library)
     ATTR_NONNULL() ATTR_WARN_UNUSED_RESULT;
diff --git a/source/blender/blenkernel/intern/preferences.c b/source/blender/blenkernel/intern/preferences.c
index c666dd4342a..0b8e8d7c311 100644
--- a/source/blender/blenkernel/intern/preferences.c
+++ b/source/blender/blenkernel/intern/preferences.c
@@ -94,6 +94,17 @@ bUserAssetLibrary *BKE_preferences_asset_library_find_from_name(const UserDef *u
   return BLI_findstring(&userdef->asset_libraries, name, offsetof(bUserAssetLibrary, name));
 }
 
+bUserAssetLibrary *BKE_preferences_asset_library_containing_path(const UserDef *userdef,
+                                                                 const char *path)
+{
+  LISTBASE_FOREACH (bUserAssetLibrary *, asset_lib_pref, &userdef->asset_libraries) {
+    if (BLI_path_contains(asset_lib_pref->path, path)) {
+      return asset_lib_pref;
+    }
+  }
+  return NULL;
+}
+
 int BKE_preferences_asset_library_get_index(const UserDef *userdef,
                                             const bUserAssetLibrary *library)
 {