1 files changed, 378 insertions, 0 deletions
diff --git a/core/io/resource_loader.cpp b/core/io/resource_loader.cpp
new file mode 100644
index 000000000..3bae6be83
--- /dev/null
+++ b/core/io/resource_loader.cpp
@@ -0,0 +1,378 @@
+/*************************************************************************/
+/*  resource_loader.cpp                                                  */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                    http://www.godotengine.org                         */
+/*************************************************************************/
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                 */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+#include "resource_loader.h"
+#include "print_string.h"
+#include "globals.h"
+#include "path_remap.h"
+#include "os/file_access.h"
+#include "os/os.h"
+ResourceFormatLoader *ResourceLoader::loader[MAX_LOADERS];
+
+int ResourceLoader::loader_count=0;
+
+
+Error ResourceInteractiveLoader::wait() {
+
+	Error err = poll();
+	while (err==OK) {
+		err=poll();
+	}
+
+	return err;
+}
+
+
+bool ResourceFormatLoader::recognize(const String& p_extension) const {
+	
+	
+	List<String> extensions;
+	get_recognized_extensions(&extensions);
+	for (List<String>::Element *E=extensions.front();E;E=E->next()) {
+		
+		if (E->get().nocasecmp_to(p_extension.extension())==0)
+			return true;
+	}
+	
+	return false;
+}
+
+void ResourceFormatLoader::get_recognized_extensions_for_type(const String& p_type,List<String> *p_extensions) const {
+
+	if (p_type=="" || handles_type(p_type))
+		get_recognized_extensions(p_extensions);
+}
+
+void ResourceLoader::get_recognized_extensions_for_type(const String& p_type,List<String> *p_extensions) {
+
+	for (int i=0;i<loader_count;i++) {
+		loader[i]->get_recognized_extensions_for_type(p_type,p_extensions);
+	}
+
+}
+
+void ResourceInteractiveLoader::_bind_methods() {
+
+	ObjectTypeDB::bind_method(_MD("get_resource"),&ResourceInteractiveLoader::get_resource);
+	ObjectTypeDB::bind_method(_MD("poll"),&ResourceInteractiveLoader::poll);
+	ObjectTypeDB::bind_method(_MD("wait"),&ResourceInteractiveLoader::wait);
+	ObjectTypeDB::bind_method(_MD("get_stage"),&ResourceInteractiveLoader::get_stage);
+	ObjectTypeDB::bind_method(_MD("get_stage_count"),&ResourceInteractiveLoader::get_stage_count);
+}
+
+class ResourceInteractiveLoaderDefault : public ResourceInteractiveLoader {
+
+	OBJ_TYPE( ResourceInteractiveLoaderDefault, ResourceInteractiveLoader );
+public:
+
+	Ref<Resource> resource;
+
+	virtual void set_local_path(const String& p_local_path) { /*scene->set_filename(p_local_path);*/ }
+	virtual Ref<Resource> get_resource() { return resource; }
+	virtual Error poll() { return ERR_FILE_EOF; }
+	virtual int get_stage() const { return 1; }
+	virtual int get_stage_count() const { return 1; }
+
+	ResourceInteractiveLoaderDefault() {}
+};
+
+
+
+Ref<ResourceInteractiveLoader> ResourceFormatLoader::load_interactive(const String &p_path) {
+
+	//either this
+	Ref<Resource> res = load(p_path);
+	if (res.is_null())
+		return Ref<ResourceInteractiveLoader>();
+
+	Ref<ResourceInteractiveLoaderDefault> ril = Ref<ResourceInteractiveLoaderDefault>( memnew( ResourceInteractiveLoaderDefault ));
+	ril->resource=res;
+	return ril;
+}
+
+RES ResourceFormatLoader::load(const String &p_path,const String& p_original_path) {
+
+
+	//or this must be implemented
+	Ref<ResourceInteractiveLoader> ril = load_interactive(p_path);
+	if (!ril.is_valid())
+		return RES();
+	ril->set_local_path(p_original_path);
+
+	while(true) {
+
+		Error err = ril->poll();
+
+		if (err==ERR_FILE_EOF) {
+			return ril->get_resource();
+		}
+
+		ERR_FAIL_COND_V(err!=OK,RES());
+	}
+
+	return RES();
+
+}
+
+void ResourceFormatLoader::get_dependencies(const String& p_path,List<String> *p_dependencies) {
+
+	//do nothing by default
+}
+
+
+///////////////////////////////////
+
+
+RES ResourceLoader::load(const String &p_path,const String& p_type_hint,bool p_no_cache) {
+
+	String local_path = Globals::get_singleton()->localize_path(p_path);
+
+	local_path=find_complete_path(p_path,p_type_hint);
+	ERR_FAIL_COND_V(local_path=="",RES());
+
+	if (!p_no_cache && ResourceCache::has(local_path)) {
+
+		if (OS::get_singleton()->is_stdout_verbose())
+			print_line("load resource: "+local_path+" (cached)");
+
+		return RES( ResourceCache::get(local_path ) );
+	}
+
+	String remapped_path = PathRemap::get_singleton()->get_remap(local_path);
+
+	if (OS::get_singleton()->is_stdout_verbose())
+		print_line("load resource: ");
+
+	String extension=remapped_path.extension();
+	bool found=false;
+	
+	for (int i=0;i<loader_count;i++) {
+		
+		if (!loader[i]->recognize(extension))
+			continue;
+		if (p_type_hint!="" && !loader[i]->handles_type(p_type_hint))
+			continue;
+		found=true;
+		RES res = loader[i]->load(remapped_path,local_path);
+		if (res.is_null())
+			continue;
+		if (!p_no_cache)
+			res->set_path(local_path);
+#ifdef TOOLS_ENABLED
+
+		res->set_edited(false);
+		if (timestamp_on_load) {
+			uint64_t mt = FileAccess::get_modified_time(remapped_path);
+			//printf("mt %s: %lli\n",remapped_path.utf8().get_data(),mt);
+			res->set_last_modified_time(mt);
+		}
+#endif
+		return res;
+	}
+
+	if (found) {
+		ERR_EXPLAIN("Failed loading resource: "+p_path);
+	} else {
+		ERR_EXPLAIN("No loader found for resource: "+p_path);
+	}
+	ERR_FAIL_V(RES());
+	return RES();
+}
+
+
+Ref<ResourceImportMetadata> ResourceLoader::load_import_metadata(const String &p_path) {
+
+
+	String local_path = Globals::get_singleton()->localize_path(p_path);
+
+	String extension=p_path.extension();
+	bool found=false;
+	Ref<ResourceImportMetadata> ret;
+
+	for (int i=0;i<loader_count;i++) {
+
+		if (!loader[i]->recognize(extension))
+			continue;
+		found=true;
+
+		Error err = loader[i]->load_import_metadata(local_path,ret);
+		if (err==OK)
+			break;
+	}
+
+	return ret;
+
+}
+
+
+
+String ResourceLoader::find_complete_path(const String& p_path,const String& p_type) {
+
+	String local_path = p_path;
+	if (local_path.ends_with("*")) {
+
+		//find the extension for resource that ends with *
+		local_path = local_path.substr(0,local_path.length()-1);
+		List<String> extensions;
+		get_recognized_extensions_for_type(p_type,&extensions);
+		List<String> candidates;
+
+		for(List<String>::Element *E=extensions.front();E;E=E->next()) {
+
+			String path = local_path+E->get();
+
+			if (FileAccess::exists(path)) {
+				candidates.push_back(path);
+			}
+
+		}
+
+
+		if (candidates.size()==0) {
+			return "";
+		} else if (candidates.size()==1 || p_type=="") {
+			return candidates.front()->get();
+		} else {
+
+			for(List<String>::Element *E=candidates.front();E;E=E->next()) {
+
+				String rt = get_resource_type(E->get());
+				if (ObjectTypeDB::is_type(rt,p_type)) {
+					return E->get();
+				}
+			}
+
+			return "";
+		}
+	}
+
+	return local_path;
+}
+
+Ref<ResourceInteractiveLoader> ResourceLoader::load_interactive(const String &p_path,const String& p_type_hint,bool p_no_cache) {
+
+
+
+	String local_path = Globals::get_singleton()->localize_path(p_path);
+
+	local_path=find_complete_path(p_path,p_type_hint);
+	ERR_FAIL_COND_V(local_path=="",Ref<ResourceInteractiveLoader>());
+
+
+
+	if (!p_no_cache && ResourceCache::has(local_path)) {
+
+		if (OS::get_singleton()->is_stdout_verbose())
+			print_line("load resource: "+local_path+" (cached)");
+
+		return RES( ResourceCache::get(local_path ) );
+	}
+
+	if (OS::get_singleton()->is_stdout_verbose())
+		print_line("load resource: ");
+
+	String remapped_path = PathRemap::get_singleton()->get_remap(local_path);
+
+	String extension=remapped_path.extension();
+	bool found=false;
+
+	for (int i=0;i<loader_count;i++) {
+
+		if (!loader[i]->recognize(extension))
+			continue;
+		if (p_type_hint!="" && !loader[i]->handles_type(p_type_hint))
+			continue;
+		found=true;
+		Ref<ResourceInteractiveLoader> ril = loader[i]->load_interactive(remapped_path);
+		if (ril.is_null())
+			continue;
+		if (!p_no_cache)
+			ril->set_local_path(local_path);
+
+		return ril;
+	}
+
+	if (found) {
+		ERR_EXPLAIN("Failed loading resource: "+p_path);
+	} else {
+		ERR_EXPLAIN("No loader found for resource: "+p_path);
+	}
+	ERR_FAIL_V(Ref<ResourceInteractiveLoader>());
+	return Ref<ResourceInteractiveLoader>();
+
+}
+
+void ResourceLoader::add_resource_format_loader(ResourceFormatLoader *p_format_loader) {
+	
+	ERR_FAIL_COND( loader_count >= MAX_LOADERS );
+	loader[loader_count++]=p_format_loader;
+}
+
+void ResourceLoader::get_dependencies(const String& p_path,List<String> *p_dependencies) {
+
+	String local_path = Globals::get_singleton()->localize_path(p_path);
+	String remapped_path = PathRemap::get_singleton()->get_remap(local_path);
+
+	String extension=remapped_path.extension();
+
+	for (int i=0;i<loader_count;i++) {
+
+		if (!loader[i]->recognize(extension))
+			continue;
+		//if (p_type_hint!="" && !loader[i]->handles_type(p_type_hint))
+		//	continue;
+
+		loader[i]->get_dependencies(remapped_path,p_dependencies);
+
+	}
+}
+
+
+String ResourceLoader::get_resource_type(const String &p_path) {
+
+	String local_path = Globals::get_singleton()->localize_path(p_path);
+	String remapped_path = PathRemap::get_singleton()->get_remap(local_path);
+	String extension=remapped_path.extension();
+
+	bool found=false;
+	for (int i=0;i<loader_count;i++) {
+
+		String result = loader[i]->get_resource_type(local_path);
+		if (result!="")
+			return result;
+	}
+
+	return "";
+
+}
+ResourceLoadErrorNotify ResourceLoader::err_notify=NULL;
+void *ResourceLoader::err_notify_ud=NULL;
+
+bool ResourceLoader::abort_on_missing_resource=true;
+bool ResourceLoader::timestamp_on_load=false;
+