469 lines
14 KiB
C++
469 lines
14 KiB
C++
/*************************************************************************/
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/* resource_loader.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "resource_loader.h"
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#include "globals.h"
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#include "os/file_access.h"
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#include "os/os.h"
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#include "path_remap.h"
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#include "print_string.h"
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ResourceFormatLoader *ResourceLoader::loader[MAX_LOADERS];
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int ResourceLoader::loader_count = 0;
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Error ResourceInteractiveLoader::wait() {
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Error err = poll();
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while (err == OK) {
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err = poll();
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}
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return err;
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}
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bool ResourceFormatLoader::recognize(const String &p_extension) const {
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List<String> extensions;
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get_recognized_extensions(&extensions);
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for (List<String>::Element *E = extensions.front(); E; E = E->next()) {
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if (E->get().nocasecmp_to(p_extension.extension()) == 0)
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return true;
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}
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return false;
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}
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void ResourceFormatLoader::get_recognized_extensions_for_type(const String &p_type, List<String> *p_extensions) const {
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if (p_type == "" || handles_type(p_type))
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get_recognized_extensions(p_extensions);
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}
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void ResourceLoader::get_recognized_extensions_for_type(const String &p_type, List<String> *p_extensions) {
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for (int i = 0; i < loader_count; i++) {
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loader[i]->get_recognized_extensions_for_type(p_type, p_extensions);
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}
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}
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void ResourceInteractiveLoader::_bind_methods() {
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ObjectTypeDB::bind_method(_MD("get_resource"), &ResourceInteractiveLoader::get_resource);
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ObjectTypeDB::bind_method(_MD("poll"), &ResourceInteractiveLoader::poll);
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ObjectTypeDB::bind_method(_MD("wait"), &ResourceInteractiveLoader::wait);
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ObjectTypeDB::bind_method(_MD("get_stage"), &ResourceInteractiveLoader::get_stage);
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ObjectTypeDB::bind_method(_MD("get_stage_count"), &ResourceInteractiveLoader::get_stage_count);
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}
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class ResourceInteractiveLoaderDefault : public ResourceInteractiveLoader {
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OBJ_TYPE(ResourceInteractiveLoaderDefault, ResourceInteractiveLoader);
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public:
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Ref<Resource> resource;
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virtual void set_local_path(const String &p_local_path) { /*scene->set_filename(p_local_path);*/
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}
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virtual Ref<Resource> get_resource() { return resource; }
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virtual Error poll() { return ERR_FILE_EOF; }
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virtual int get_stage() const { return 1; }
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virtual int get_stage_count() const { return 1; }
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ResourceInteractiveLoaderDefault() {}
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};
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Ref<ResourceInteractiveLoader> ResourceFormatLoader::load_interactive(const String &p_path, Error *r_error) {
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//either this
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Ref<Resource> res = load(p_path, p_path, r_error);
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if (res.is_null())
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return Ref<ResourceInteractiveLoader>();
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Ref<ResourceInteractiveLoaderDefault> ril = Ref<ResourceInteractiveLoaderDefault>(memnew(ResourceInteractiveLoaderDefault));
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ril->resource = res;
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return ril;
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}
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RES ResourceFormatLoader::load(const String &p_path, const String &p_original_path, Error *r_error) {
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String path = p_path;
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//or this must be implemented
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Ref<ResourceInteractiveLoader> ril = load_interactive(p_path, r_error);
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if (!ril.is_valid())
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return RES();
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ril->set_local_path(p_original_path);
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while (true) {
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Error err = ril->poll();
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if (err == ERR_FILE_EOF) {
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if (r_error)
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*r_error = OK;
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return ril->get_resource();
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}
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if (r_error)
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*r_error = err;
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ERR_FAIL_COND_V(err != OK, RES());
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}
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return RES();
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}
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void ResourceFormatLoader::get_dependencies(const String &p_path, List<String> *p_dependencies, bool p_add_types) {
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//do nothing by default
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}
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///////////////////////////////////
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RES ResourceLoader::load(const String &p_path, const String &p_type_hint, bool p_no_cache, Error *r_error) {
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if (r_error)
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*r_error = ERR_CANT_OPEN;
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String local_path;
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if (p_path.is_rel_path())
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local_path = "res://" + p_path;
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else
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local_path = Globals::get_singleton()->localize_path(p_path);
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local_path = find_complete_path(local_path, p_type_hint);
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ERR_FAIL_COND_V(local_path == "", RES());
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if (!p_no_cache && ResourceCache::has(local_path)) {
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if (OS::get_singleton()->is_stdout_verbose())
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print_line("load resource: " + local_path + " (cached)");
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return RES(ResourceCache::get(local_path));
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}
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String remapped_path = PathRemap::get_singleton()->get_remap(local_path);
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if (OS::get_singleton()->is_stdout_verbose())
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print_line("load resource: " + remapped_path);
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String extension = remapped_path.extension();
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bool found = false;
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for (int i = 0; i < loader_count; i++) {
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if (!loader[i]->recognize(extension))
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continue;
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if (p_type_hint != "" && !loader[i]->handles_type(p_type_hint))
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continue;
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found = true;
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RES res = loader[i]->load(remapped_path, local_path, r_error);
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if (res.is_null())
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continue;
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if (!p_no_cache)
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res->set_path(local_path);
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#ifdef TOOLS_ENABLED
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res->set_edited(false);
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if (timestamp_on_load) {
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uint64_t mt = FileAccess::get_modified_time(remapped_path);
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//printf("mt %s: %lli\n",remapped_path.utf8().get_data(),mt);
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res->set_last_modified_time(mt);
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}
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#endif
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return res;
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}
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if (found) {
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ERR_EXPLAIN("Failed loading resource: " + p_path);
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} else {
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ERR_EXPLAIN("No loader found for resource: " + p_path);
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}
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ERR_FAIL_V(RES());
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return RES();
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}
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Ref<ResourceImportMetadata> ResourceLoader::load_import_metadata(const String &p_path) {
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String local_path;
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if (p_path.is_rel_path())
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local_path = "res://" + p_path;
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else
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local_path = Globals::get_singleton()->localize_path(p_path);
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String extension = p_path.extension();
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Ref<ResourceImportMetadata> ret;
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for (int i = 0; i < loader_count; i++) {
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if (!loader[i]->recognize(extension))
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continue;
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Error err = loader[i]->load_import_metadata(local_path, ret);
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if (err == OK)
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break;
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}
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return ret;
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}
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String ResourceLoader::find_complete_path(const String &p_path, const String &p_type) {
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//this is an old vestige when the engine saved files without extension.
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//remains here for compatibility with old projects and only because it
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//can be sometimes nice to open files using .* from a script and have it guess
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//the right extension.
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String local_path = p_path;
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if (local_path.ends_with("*")) {
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//find the extension for resource that ends with *
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local_path = local_path.substr(0, local_path.length() - 1);
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List<String> extensions;
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get_recognized_extensions_for_type(p_type, &extensions);
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List<String> candidates;
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for (List<String>::Element *E = extensions.front(); E; E = E->next()) {
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String path = local_path + E->get();
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if (PathRemap::get_singleton()->has_remap(path) || FileAccess::exists(path)) {
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candidates.push_back(path);
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}
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}
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if (candidates.size() == 0) {
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return "";
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} else if (candidates.size() == 1 || p_type == "") {
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return candidates.front()->get();
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} else {
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for (List<String>::Element *E = candidates.front(); E; E = E->next()) {
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String rt = get_resource_type(E->get());
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if (ObjectTypeDB::is_type(rt, p_type)) {
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return E->get();
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}
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}
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return "";
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}
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}
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return local_path;
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}
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Ref<ResourceInteractiveLoader> ResourceLoader::load_interactive(const String &p_path, const String &p_type_hint, bool p_no_cache, Error *r_error) {
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if (r_error)
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*r_error = ERR_CANT_OPEN;
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String local_path;
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if (p_path.is_rel_path())
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local_path = "res://" + p_path;
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else
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local_path = Globals::get_singleton()->localize_path(p_path);
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local_path = find_complete_path(local_path, p_type_hint);
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ERR_FAIL_COND_V(local_path == "", Ref<ResourceInteractiveLoader>());
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if (!p_no_cache && ResourceCache::has(local_path)) {
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if (OS::get_singleton()->is_stdout_verbose())
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print_line("load resource: " + local_path + " (cached)");
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Ref<Resource> res_cached = ResourceCache::get(local_path);
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Ref<ResourceInteractiveLoaderDefault> ril = Ref<ResourceInteractiveLoaderDefault>(memnew(ResourceInteractiveLoaderDefault));
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ril->resource = res_cached;
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return ril;
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}
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if (OS::get_singleton()->is_stdout_verbose())
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print_line("load resource: ");
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String remapped_path = PathRemap::get_singleton()->get_remap(local_path);
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String extension = remapped_path.extension();
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bool found = false;
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for (int i = 0; i < loader_count; i++) {
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if (!loader[i]->recognize(extension))
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continue;
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if (p_type_hint != "" && !loader[i]->handles_type(p_type_hint))
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continue;
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found = true;
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Ref<ResourceInteractiveLoader> ril = loader[i]->load_interactive(remapped_path, r_error);
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if (ril.is_null())
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continue;
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if (!p_no_cache)
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ril->set_local_path(local_path);
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return ril;
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}
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if (found) {
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ERR_EXPLAIN("Failed loading resource: " + p_path);
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} else {
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ERR_EXPLAIN("No loader found for resource: " + p_path);
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}
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ERR_FAIL_V(Ref<ResourceInteractiveLoader>());
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return Ref<ResourceInteractiveLoader>();
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}
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void ResourceLoader::add_resource_format_loader(ResourceFormatLoader *p_format_loader, bool p_at_front) {
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ERR_FAIL_COND(loader_count >= MAX_LOADERS);
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if (p_at_front) {
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for (int i = loader_count; i > 0; i--) {
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loader[i] = loader[i - 1];
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}
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loader[0] = p_format_loader;
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loader_count++;
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} else {
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loader[loader_count++] = p_format_loader;
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}
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}
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void ResourceLoader::get_dependencies(const String &p_path, List<String> *p_dependencies, bool p_add_types) {
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String local_path;
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if (p_path.is_rel_path())
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local_path = "res://" + p_path;
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else
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local_path = Globals::get_singleton()->localize_path(p_path);
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String remapped_path = PathRemap::get_singleton()->get_remap(local_path);
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String extension = remapped_path.extension();
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for (int i = 0; i < loader_count; i++) {
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if (!loader[i]->recognize(extension))
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continue;
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//if (p_type_hint!="" && !loader[i]->handles_type(p_type_hint))
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// continue;
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loader[i]->get_dependencies(remapped_path, p_dependencies, p_add_types);
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}
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}
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Error ResourceLoader::get_export_data(const String &p_path, ExportData &r_export_data) {
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String local_path;
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if (p_path.is_rel_path())
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local_path = "res://" + p_path;
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else
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local_path = Globals::get_singleton()->localize_path(p_path);
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String remapped_path = PathRemap::get_singleton()->get_remap(local_path);
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String extension = remapped_path.extension();
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for (int i = 0; i < loader_count; i++) {
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if (!loader[i]->recognize(extension))
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continue;
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//if (p_type_hint!="" && !loader[i]->handles_type(p_type_hint))
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// continue;
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return loader[i]->get_export_data(p_path, r_export_data);
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}
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return ERR_UNAVAILABLE;
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}
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Error ResourceLoader::rename_dependencies(const String &p_path, const Map<String, String> &p_map) {
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String local_path;
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if (p_path.is_rel_path())
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local_path = "res://" + p_path;
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else
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local_path = Globals::get_singleton()->localize_path(p_path);
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String remapped_path = PathRemap::get_singleton()->get_remap(local_path);
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String extension = remapped_path.extension();
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for (int i = 0; i < loader_count; i++) {
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if (!loader[i]->recognize(extension))
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continue;
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//if (p_type_hint!="" && !loader[i]->handles_type(p_type_hint))
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// continue;
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return loader[i]->rename_dependencies(p_path, p_map);
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}
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return OK; // ??
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}
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String ResourceLoader::guess_full_filename(const String &p_path, const String &p_type) {
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String local_path;
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if (p_path.is_rel_path())
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local_path = "res://" + p_path;
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else
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local_path = Globals::get_singleton()->localize_path(p_path);
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return find_complete_path(local_path, p_type);
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}
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String ResourceLoader::get_resource_type(const String &p_path) {
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String local_path;
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if (p_path.is_rel_path())
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local_path = "res://" + p_path;
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else
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local_path = Globals::get_singleton()->localize_path(p_path);
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String remapped_path = PathRemap::get_singleton()->get_remap(local_path);
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String extension = remapped_path.extension();
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for (int i = 0; i < loader_count; i++) {
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String result = loader[i]->get_resource_type(local_path);
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if (result != "")
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return result;
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}
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return "";
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}
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ResourceLoadErrorNotify ResourceLoader::err_notify = NULL;
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void *ResourceLoader::err_notify_ud = NULL;
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DependencyErrorNotify ResourceLoader::dep_err_notify = NULL;
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void *ResourceLoader::dep_err_notify_ud = NULL;
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bool ResourceLoader::abort_on_missing_resource = true;
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bool ResourceLoader::timestamp_on_load = false;
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