Merge pull request #69616 from reduz/change-uuid

Ability to change a resource UID from API

2 files changed, 63 insertions, 2 deletions

diff --git a/scene/resources/resource_format_text.cpp b/scene/resources/resource_format_text.cpp
index ade8875935..d80a4004a4 100644
--- a/scene/resources/resource_format_text.cpp
+++ b/scene/resources/resource_format_text.cpp
@@ -449,10 +449,10 @@ Error ResourceLoaderText::load() {
 #ifdef TOOLS_ENABLED
 				// Silence a warning that can happen during the initial filesystem scan due to cache being regenerated.
 				if (ResourceLoader::get_resource_uid(path) != uid) {
-					WARN_PRINT(String(res_path + ":" + itos(lines) + " - ext_resource, invalid UUID: " + uidt + " - using text path instead: " + path).utf8().get_data());
+					WARN_PRINT(String(res_path + ":" + itos(lines) + " - ext_resource, invalid UID: " + uidt + " - using text path instead: " + path).utf8().get_data());
 				}
 #else
-				WARN_PRINT(String(res_path + ":" + itos(lines) + " - ext_resource, invalid UUID: " + uidt + " - using text path instead: " + path).utf8().get_data());
+				WARN_PRINT(String(res_path + ":" + itos(lines) + " - ext_resource, invalid UID: " + uidt + " - using text path instead: " + path).utf8().get_data());
 #endif
 			}
 		}
@@ -2237,6 +2237,35 @@ Error ResourceFormatSaverTextInstance::save(const String &p_path, const Ref<Reso
 	return OK;
 }
 
+Error ResourceLoaderText::set_uid(Ref<FileAccess> p_f, ResourceUID::ID p_uid) {
+	open(p_f, true);
+	ERR_FAIL_COND_V(error != OK, error);
+	ignore_resource_parsing = true;
+
+	Ref<FileAccess> fw;
+
+	fw = FileAccess::open(local_path + ".uidren", FileAccess::WRITE);
+	if (is_scene) {
+		fw->store_string("[gd_scene load_steps=" + itos(resources_total) + " format=" + itos(FORMAT_VERSION) + " uid=\"" + ResourceUID::get_singleton()->id_to_text(p_uid) + "\"]");
+	} else {
+		fw->store_string("[gd_resource type=\"" + res_type + "\" load_steps=" + itos(resources_total) + " format=" + itos(FORMAT_VERSION) + " uid=\"" + ResourceUID::get_singleton()->id_to_text(p_uid) + "\"]");
+	}
+
+	uint8_t c = f->get_8();
+	while (!f->eof_reached()) {
+		fw->store_8(c);
+		c = f->get_8();
+	}
+
+	bool all_ok = fw->get_error() == OK;
+
+	if (!all_ok) {
+		return ERR_CANT_CREATE;
+	}
+
+	return OK;
+}
+
 Error ResourceFormatSaverText::save(const Ref<Resource> &p_resource, const String &p_path, uint32_t p_flags) {
 	if (p_path.ends_with(".tscn") && !Ref<PackedScene>(p_resource).is_valid()) {
 		return ERR_FILE_UNRECOGNIZED;
@@ -2246,6 +2275,35 @@ Error ResourceFormatSaverText::save(const Ref<Resource> &p_resource, const Strin
 	return saver.save(p_path, p_resource, p_flags);
 }
 
+Error ResourceFormatSaverText::set_uid(const String &p_path, ResourceUID::ID p_uid) {
+	String lc = p_path.to_lower();
+	if (!lc.ends_with(".tscn") && !lc.ends_with(".tres")) {
+		return ERR_FILE_UNRECOGNIZED;
+	}
+
+	String local_path = ProjectSettings::get_singleton()->localize_path(p_path);
+	Error err = OK;
+	{
+		Ref<FileAccess> fo = FileAccess::open(p_path, FileAccess::READ);
+		if (fo.is_null()) {
+			ERR_FAIL_V(ERR_CANT_OPEN);
+		}
+
+		ResourceLoaderText loader;
+		loader.local_path = local_path;
+		loader.res_path = loader.local_path;
+		err = loader.set_uid(fo, p_uid);
+	}
+
+	if (err == OK) {
+		Ref<DirAccess> da = DirAccess::create(DirAccess::ACCESS_RESOURCES);
+		da->remove(local_path);
+		da->rename(local_path + ".uidren", local_path);
+	}
+
+	return err;
+}
+
 bool ResourceFormatSaverText::recognize(const Ref<Resource> &p_resource) const {
 	return true; // All resources recognized!
 }
diff --git a/scene/resources/resource_format_text.h b/scene/resources/resource_format_text.h
index f96511fb74..0f95e2fbfd 100644
--- a/scene/resources/resource_format_text.h
+++ b/scene/resources/resource_format_text.h
@@ -106,6 +106,7 @@ class ResourceLoaderText {
 	VariantParser::ResourceParser rp;
 
 	friend class ResourceFormatLoaderText;
+	friend class ResourceFormatSaverText;
 
 	Error error = OK;
 
@@ -117,6 +118,7 @@ public:
 	void set_local_path(const String &p_local_path);
 	Ref<Resource> get_resource();
 	Error load();
+	Error set_uid(Ref<FileAccess> p_f, ResourceUID::ID p_uid);
 	int get_stage() const;
 	int get_stage_count() const;
 	void set_translation_remapped(bool p_remapped);
@@ -195,6 +197,7 @@ class ResourceFormatSaverText : public ResourceFormatSaver {
 public:
 	static ResourceFormatSaverText *singleton;
 	virtual Error save(const Ref<Resource> &p_resource, const String &p_path, uint32_t p_flags = 0);
+	virtual Error set_uid(const String &p_path, ResourceUID::ID p_uid);
 	virtual bool recognize(const Ref<Resource> &p_resource) const;
 	virtual void get_recognized_extensions(const Ref<Resource> &p_resource, List<String> *p_extensions) const;