Ability to change a resource UID from API

* Works for text, binary and imported resources
* Allows better clean up of duplicate files.

TODO (future PRs):

* Use this API for assigning new UIDs to copied files.
* Use this API for UID conflict on FS scanning (if more than one file has the same UID, the newer one(s) should get assigned a different UID).

1 files changed, 16 insertions, 0 deletions

diff --git a/core/io/resource_importer.cpp b/core/io/resource_importer.cpp
index a4f4d705ee..dc1de6b9ce 100644
--- a/core/io/resource_importer.cpp
+++ b/core/io/resource_importer.cpp
@@ -31,6 +31,7 @@
 #include "resource_importer.h"
 
 #include "core/config/project_settings.h"
+#include "core/io/config_file.h"
 #include "core/os/os.h"
 #include "core/variant/variant_parser.h"
 
@@ -484,3 +485,18 @@ void ResourceFormatImporter::add_importer(const Ref<ResourceImporter> &p_importe
 		importers.push_back(p_importer);
 	}
 }
+
+/////
+
+Error ResourceFormatImporterSaver::set_uid(const String &p_path, ResourceUID::ID p_uid) {
+	Ref<ConfigFile> cf;
+	cf.instantiate();
+	Error err = cf->load(p_path + ".import");
+	if (err != OK) {
+		return err;
+	}
+	cf->set_value("remap", "uid", ResourceUID::get_singleton()->id_to_text(p_uid));
+	cf->save(p_path + ".import");
+
+	return OK;
+}