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godot/core/io/resource_loader.cpp

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/*************************************************************************/
/* resource_loader.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* 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 "core/io/resource_importer.h"
#include "core/os/file_access.h"
#include "core/os/os.h"
#include "core/path_remap.h"
#include "core/print_string.h"
#include "core/project_settings.h"
#include "core/translation.h"
#include "core/variant_parser.h"
Ref<ResourceFormatLoader> ResourceLoader::loader[ResourceLoader::MAX_LOADERS];
int ResourceLoader::loader_count = 0;
Error ResourceInteractiveLoader::wait() {
Error err = poll();
while (err == OK) {
err = poll();
}
return err;
}
ResourceInteractiveLoader::~ResourceInteractiveLoader() {
if (path_loading != String()) {
ResourceLoader::_remove_from_loading_map_and_thread(path_loading, path_loading_thread);
}
}
bool ResourceFormatLoader::recognize_path(const String &p_path, const String &p_for_type) const {
String extension = p_path.get_extension();
List<String> extensions;
if (p_for_type == String()) {
get_recognized_extensions(&extensions);
} else {
get_recognized_extensions_for_type(p_for_type, &extensions);
}
for (List<String>::Element *E = extensions.front(); E; E = E->next()) {
if (E->get().nocasecmp_to(extension) == 0)
return true;
}
return false;
}
bool ResourceFormatLoader::handles_type(const String &p_type) const {
if (get_script_instance() && get_script_instance()->has_method("handles_type")) {
// I guess custom loaders for custom resources should use "Resource"
return get_script_instance()->call("handles_type", p_type);
}
return false;
}
String ResourceFormatLoader::get_resource_type(const String &p_path) const {
if (get_script_instance() && get_script_instance()->has_method("get_resource_type")) {
return get_script_instance()->call("get_resource_type", p_path);
}
return "";
}
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() {
ClassDB::bind_method(D_METHOD("get_resource"), &ResourceInteractiveLoader::get_resource);
ClassDB::bind_method(D_METHOD("poll"), &ResourceInteractiveLoader::poll);
ClassDB::bind_method(D_METHOD("wait"), &ResourceInteractiveLoader::wait);
ClassDB::bind_method(D_METHOD("get_stage"), &ResourceInteractiveLoader::get_stage);
ClassDB::bind_method(D_METHOD("get_stage_count"), &ResourceInteractiveLoader::get_stage_count);
}
class ResourceInteractiveLoaderDefault : public ResourceInteractiveLoader {
GDCLASS(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; }
virtual void set_translation_remapped(bool p_remapped) { resource->set_as_translation_remapped(p_remapped); }
ResourceInteractiveLoaderDefault() {}
};
Ref<ResourceInteractiveLoader> ResourceFormatLoader::load_interactive(const String &p_path, const String &p_original_path, Error *r_error) {
//either this
Ref<Resource> res = load(p_path, p_original_path, r_error);
if (res.is_null())
return Ref<ResourceInteractiveLoader>();
Ref<ResourceInteractiveLoaderDefault> ril = Ref<ResourceInteractiveLoaderDefault>(memnew(ResourceInteractiveLoaderDefault));
ril->resource = res;
return ril;
}
bool ResourceFormatLoader::exists(const String &p_path) const {
return FileAccess::exists(p_path); //by default just check file
}
void ResourceFormatLoader::get_recognized_extensions(List<String> *p_extensions) const {
if (get_script_instance() && get_script_instance()->has_method("get_recognized_extensions")) {
PoolStringArray exts = get_script_instance()->call("get_recognized_extensions");
{
PoolStringArray::Read r = exts.read();
for (int i = 0; i < exts.size(); ++i) {
p_extensions->push_back(r[i]);
}
}
}
}
RES ResourceFormatLoader::load(const String &p_path, const String &p_original_path, Error *r_error) {
if (get_script_instance() && get_script_instance()->has_method("load")) {
Variant res = get_script_instance()->call("load", p_path, p_original_path);
if (res.get_type() == Variant::INT) {
if (r_error)
*r_error = (Error)res.operator int64_t();
} else {
if (r_error)
*r_error = OK;
return res;
}
}
//or this must be implemented
Ref<ResourceInteractiveLoader> ril = load_interactive(p_path, p_original_path, r_error);
if (!ril.is_valid())
return RES();
ril->set_local_path(p_original_path);
while (true) {
Error err = ril->poll();
if (err == ERR_FILE_EOF) {
if (r_error)
*r_error = OK;
return ril->get_resource();
}
if (r_error)
*r_error = err;
ERR_FAIL_COND_V(err != OK, RES());
}
return RES();
}
void ResourceFormatLoader::get_dependencies(const String &p_path, List<String> *p_dependencies, bool p_add_types) {
if (get_script_instance() && get_script_instance()->has_method("get_dependencies")) {
PoolStringArray deps = get_script_instance()->call("get_dependencies", p_path, p_add_types);
{
PoolStringArray::Read r = deps.read();
for (int i = 0; i < deps.size(); ++i) {
p_dependencies->push_back(r[i]);
}
}
}
}
Error ResourceFormatLoader::rename_dependencies(const String &p_path, const Map<String, String> &p_map) {
if (get_script_instance() && get_script_instance()->has_method("rename_dependencies")) {
Dictionary deps_dict;
for (Map<String, String>::Element *E = p_map.front(); E; E = E->next()) {
deps_dict[E->key()] = E->value();
}
int64_t res = get_script_instance()->call("rename_dependencies", deps_dict);
return (Error)res;
}
return OK;
}
void ResourceFormatLoader::_bind_methods() {
{
MethodInfo info = MethodInfo(Variant::NIL, "load", PropertyInfo(Variant::STRING, "path"), PropertyInfo(Variant::STRING, "original_path"));
info.return_val.usage |= PROPERTY_USAGE_NIL_IS_VARIANT;
ClassDB::add_virtual_method(get_class_static(), info);
}
ClassDB::add_virtual_method(get_class_static(), MethodInfo(Variant::POOL_STRING_ARRAY, "get_recognized_extensions"));
ClassDB::add_virtual_method(get_class_static(), MethodInfo(Variant::BOOL, "handles_type", PropertyInfo(Variant::STRING, "typename")));
ClassDB::add_virtual_method(get_class_static(), MethodInfo(Variant::STRING, "get_resource_type", PropertyInfo(Variant::STRING, "path")));
ClassDB::add_virtual_method(get_class_static(), MethodInfo("get_dependencies", PropertyInfo(Variant::STRING, "path"), PropertyInfo(Variant::STRING, "add_types")));
ClassDB::add_virtual_method(get_class_static(), MethodInfo(Variant::INT, "rename_dependencies", PropertyInfo(Variant::STRING, "path"), PropertyInfo(Variant::STRING, "renames")));
}
///////////////////////////////////
RES ResourceLoader::_load(const String &p_path, const String &p_original_path, const String &p_type_hint, bool p_no_cache, Error *r_error) {
bool found = false;
// Try all loaders and pick the first match for the type hint
for (int i = 0; i < loader_count; i++) {
if (!loader[i]->recognize_path(p_path, p_type_hint)) {
continue;
}
found = true;
RES res = loader[i]->load(p_path, p_original_path != String() ? p_original_path : p_path, r_error);
if (res.is_null()) {
continue;
}
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();
}
bool ResourceLoader::_add_to_loading_map(const String &p_path) {
bool success;
if (loading_map_mutex) {
loading_map_mutex->lock();
}
LoadingMapKey key;
key.path = p_path;
key.thread = Thread::get_caller_id();
if (loading_map.has(key)) {
success = false;
} else {
loading_map[key] = true;
success = true;
}
if (loading_map_mutex) {
loading_map_mutex->unlock();
}
return success;
}
void ResourceLoader::_remove_from_loading_map(const String &p_path) {
if (loading_map_mutex) {
loading_map_mutex->lock();
}
LoadingMapKey key;
key.path = p_path;
key.thread = Thread::get_caller_id();
loading_map.erase(key);
if (loading_map_mutex) {
loading_map_mutex->unlock();
}
}
void ResourceLoader::_remove_from_loading_map_and_thread(const String &p_path, Thread::ID p_thread) {
if (loading_map_mutex) {
loading_map_mutex->lock();
}
LoadingMapKey key;
key.path = p_path;
key.thread = p_thread;
loading_map.erase(key);
if (loading_map_mutex) {
loading_map_mutex->unlock();
}
}
RES ResourceLoader::load(const String &p_path, const String &p_type_hint, bool p_no_cache, Error *r_error) {
if (r_error)
*r_error = ERR_CANT_OPEN;
String local_path;
if (p_path.is_rel_path())
local_path = "res://" + p_path;
else
local_path = ProjectSettings::get_singleton()->localize_path(p_path);
if (!p_no_cache) {
{
bool success = _add_to_loading_map(local_path);
if (!success) {
ERR_EXPLAIN("Resource: '" + local_path + "' is already being loaded. Cyclic reference?");
ERR_FAIL_V(RES());
}
}
//lock first if possible
if (ResourceCache::lock) {
ResourceCache::lock->read_lock();
}
//get ptr
Resource **rptr = ResourceCache::resources.getptr(local_path);
if (rptr) {
RES res(*rptr);
//it is possible this resource was just freed in a thread. If so, this referencing will not work and resource is considered not cached
if (res.is_valid()) {
//referencing is fine
if (r_error)
*r_error = OK;
if (ResourceCache::lock) {
ResourceCache::lock->read_unlock();
}
_remove_from_loading_map(local_path);
return res;
}
}
if (ResourceCache::lock) {
ResourceCache::lock->read_unlock();
}
}
bool xl_remapped = false;
String path = _path_remap(local_path, &xl_remapped);
if (path == "") {
if (!p_no_cache) {
_remove_from_loading_map(local_path);
}
ERR_EXPLAIN("Remapping '" + local_path + "'failed.");
ERR_FAIL_V(RES());
}
print_verbose("Loading resource: " + path);
RES res = _load(path, local_path, p_type_hint, p_no_cache, r_error);
if (res.is_null()) {
if (!p_no_cache) {
_remove_from_loading_map(local_path);
}
return RES();
}
if (!p_no_cache)
res->set_path(local_path);
if (xl_remapped)
res->set_as_translation_remapped(true);
#ifdef TOOLS_ENABLED
res->set_edited(false);
if (timestamp_on_load) {
uint64_t mt = FileAccess::get_modified_time(path);
//printf("mt %s: %lli\n",remapped_path.utf8().get_data(),mt);
res->set_last_modified_time(mt);
}
#endif
if (!p_no_cache) {
_remove_from_loading_map(local_path);
}
if (_loaded_callback) {
_loaded_callback(res, p_path);
}
return res;
}
bool ResourceLoader::exists(const String &p_path, const String &p_type_hint) {
String local_path;
if (p_path.is_rel_path())
local_path = "res://" + p_path;
else
local_path = ProjectSettings::get_singleton()->localize_path(p_path);
if (ResourceCache::has(local_path)) {
return true; // If cached, it probably exists
}
bool xl_remapped = false;
String path = _path_remap(local_path, &xl_remapped);
// Try all loaders and pick the first match for the type hint
for (int i = 0; i < loader_count; i++) {
if (!loader[i]->recognize_path(path, p_type_hint)) {
continue;
}
if (loader[i]->exists(path))
return true;
}
return false;
}
Ref<ResourceInteractiveLoader> ResourceLoader::load_interactive(const String &p_path, const String &p_type_hint, bool p_no_cache, Error *r_error) {
if (r_error)
*r_error = ERR_CANT_OPEN;
String local_path;
if (p_path.is_rel_path())
local_path = "res://" + p_path;
else
local_path = ProjectSettings::get_singleton()->localize_path(p_path);
if (!p_no_cache) {
bool success = _add_to_loading_map(local_path);
if (!success) {
ERR_EXPLAIN("Resource: '" + local_path + "' is already being loaded. Cyclic reference?");
ERR_FAIL_V(RES());
}
if (ResourceCache::has(local_path)) {
print_verbose("Loading resource: " + local_path + " (cached)");
Ref<Resource> res_cached = ResourceCache::get(local_path);
Ref<ResourceInteractiveLoaderDefault> ril = Ref<ResourceInteractiveLoaderDefault>(memnew(ResourceInteractiveLoaderDefault));
ril->resource = res_cached;
ril->path_loading = local_path;
ril->path_loading_thread = Thread::get_caller_id();
return ril;
}
}
bool xl_remapped = false;
String path = _path_remap(local_path, &xl_remapped);
if (path == "") {
if (!p_no_cache) {
_remove_from_loading_map(local_path);
}
ERR_EXPLAIN("Remapping '" + local_path + "'failed.");
ERR_FAIL_V(RES());
}
print_verbose("Loading resource: " + path);
bool found = false;
for (int i = 0; i < loader_count; i++) {
if (!loader[i]->recognize_path(path, p_type_hint))
continue;
found = true;
Ref<ResourceInteractiveLoader> ril = loader[i]->load_interactive(path, local_path, r_error);
if (ril.is_null())
continue;
if (!p_no_cache) {
ril->set_local_path(local_path);
ril->path_loading = local_path;
ril->path_loading_thread = Thread::get_caller_id();
}
if (xl_remapped)
ril->set_translation_remapped(true);
return ril;
}
if (!p_no_cache) {
_remove_from_loading_map(local_path);
}
if (found) {
ERR_EXPLAIN("Failed loading resource: " + path);
} else {
ERR_EXPLAIN("No loader found for resource: " + path);
}
ERR_FAIL_V(Ref<ResourceInteractiveLoader>());
return Ref<ResourceInteractiveLoader>();
}
void ResourceLoader::add_resource_format_loader(Ref<ResourceFormatLoader> p_format_loader, bool p_at_front) {
ERR_FAIL_COND(p_format_loader.is_null());
ERR_FAIL_COND(loader_count >= MAX_LOADERS);
if (p_at_front) {
for (int i = loader_count; i > 0; i--) {
loader[i] = loader[i - 1];
}
loader[0] = p_format_loader;
loader_count++;
} else {
loader[loader_count++] = p_format_loader;
}
}
void ResourceLoader::remove_resource_format_loader(Ref<ResourceFormatLoader> p_format_loader) {
ERR_FAIL_COND(p_format_loader.is_null());
// Find loader
int i = 0;
for (; i < loader_count; ++i) {
if (loader[i] == p_format_loader)
break;
}
ERR_FAIL_COND(i >= loader_count); // Not found
// Shift next loaders up
for (; i < loader_count - 1; ++i) {
loader[i] = loader[i + 1];
}
loader[loader_count - 1].unref();
--loader_count;
}
int ResourceLoader::get_import_order(const String &p_path) {
String path = _path_remap(p_path);
String local_path;
if (path.is_rel_path())
local_path = "res://" + path;
else
local_path = ProjectSettings::get_singleton()->localize_path(path);
for (int i = 0; i < loader_count; i++) {
if (!loader[i]->recognize_path(local_path))
continue;
/*
if (p_type_hint!="" && !loader[i]->handles_type(p_type_hint))
continue;
*/
return loader[i]->get_import_order(p_path);
}
return 0;
}
bool ResourceLoader::is_import_valid(const String &p_path) {
String path = _path_remap(p_path);
String local_path;
if (path.is_rel_path())
local_path = "res://" + path;
else
local_path = ProjectSettings::get_singleton()->localize_path(path);
for (int i = 0; i < loader_count; i++) {
if (!loader[i]->recognize_path(local_path))
continue;
/*
if (p_type_hint!="" && !loader[i]->handles_type(p_type_hint))
continue;
*/
return loader[i]->is_import_valid(p_path);
}
return false; //not found
}
bool ResourceLoader::is_imported(const String &p_path) {
String path = _path_remap(p_path);
String local_path;
if (path.is_rel_path())
local_path = "res://" + path;
else
local_path = ProjectSettings::get_singleton()->localize_path(path);
for (int i = 0; i < loader_count; i++) {
if (!loader[i]->recognize_path(local_path))
continue;
/*
if (p_type_hint!="" && !loader[i]->handles_type(p_type_hint))
continue;
*/
return loader[i]->is_imported(p_path);
}
return false; //not found
}
void ResourceLoader::get_dependencies(const String &p_path, List<String> *p_dependencies, bool p_add_types) {
String path = _path_remap(p_path);
String local_path;
if (path.is_rel_path())
local_path = "res://" + path;
else
local_path = ProjectSettings::get_singleton()->localize_path(path);
for (int i = 0; i < loader_count; i++) {
if (!loader[i]->recognize_path(local_path))
continue;
/*
if (p_type_hint!="" && !loader[i]->handles_type(p_type_hint))
continue;
*/
loader[i]->get_dependencies(local_path, p_dependencies, p_add_types);
}
}
Error ResourceLoader::rename_dependencies(const String &p_path, const Map<String, String> &p_map) {
String path = _path_remap(p_path);
String local_path;
if (path.is_rel_path())
local_path = "res://" + path;
else
local_path = ProjectSettings::get_singleton()->localize_path(path);
for (int i = 0; i < loader_count; i++) {
if (!loader[i]->recognize_path(local_path))
continue;
/*
if (p_type_hint!="" && !loader[i]->handles_type(p_type_hint))
continue;
*/
return loader[i]->rename_dependencies(local_path, p_map);
}
return OK; // ??
}
String ResourceLoader::get_resource_type(const String &p_path) {
String local_path;
if (p_path.is_rel_path())
local_path = "res://" + p_path;
else
local_path = ProjectSettings::get_singleton()->localize_path(p_path);
for (int i = 0; i < loader_count; i++) {
String result = loader[i]->get_resource_type(local_path);
if (result != "")
return result;
}
return "";
}
String ResourceLoader::_path_remap(const String &p_path, bool *r_translation_remapped) {
String new_path = p_path;
if (translation_remaps.has(new_path)) {
Vector<String> &v = *translation_remaps.getptr(new_path);
String locale = TranslationServer::get_singleton()->get_locale();
if (r_translation_remapped) {
*r_translation_remapped = true;
}
for (int i = 0; i < v.size(); i++) {
int split = v[i].find_last(":");
if (split == -1)
continue;
String l = v[i].right(split + 1).strip_edges();
if (l == String())
continue;
if (l.begins_with(locale)) {
new_path = v[i].left(split);
break;
}
}
}
if (path_remaps.has(new_path)) {
new_path = path_remaps[new_path];
}
if (new_path == p_path) { //did not remap
//try file remap
Error err;
FileAccess *f = FileAccess::open(p_path + ".remap", FileAccess::READ, &err);
if (f) {
VariantParser::StreamFile stream;
stream.f = f;
String assign;
Variant value;
VariantParser::Tag next_tag;
int lines = 0;
String error_text;
while (true) {
assign = Variant();
next_tag.fields.clear();
next_tag.name = String();
err = VariantParser::parse_tag_assign_eof(&stream, lines, error_text, next_tag, assign, value, NULL, true);
if (err == ERR_FILE_EOF) {
break;
} else if (err != OK) {
ERR_PRINTS("Parse error: " + p_path + ".remap:" + itos(lines) + " error: " + error_text);
break;
}
if (assign == "path") {
new_path = value;
break;
} else if (next_tag.name != "remap") {
break;
}
}
memdelete(f);
}
}
return new_path;
}
String ResourceLoader::import_remap(const String &p_path) {
if (ResourceFormatImporter::get_singleton()->recognize_path(p_path)) {
return ResourceFormatImporter::get_singleton()->get_internal_resource_path(p_path);
}
return p_path;
}
String ResourceLoader::path_remap(const String &p_path) {
return _path_remap(p_path);
}
void ResourceLoader::reload_translation_remaps() {
if (ResourceCache::lock) {
ResourceCache::lock->read_lock();
}
List<Resource *> to_reload;
SelfList<Resource> *E = remapped_list.first();
while (E) {
to_reload.push_back(E->self());
E = E->next();
}
if (ResourceCache::lock) {
ResourceCache::lock->read_unlock();
}
//now just make sure to not delete any of these resources while changing locale..
while (to_reload.front()) {
to_reload.front()->get()->reload_from_file();
to_reload.pop_front();
}
}
void ResourceLoader::load_translation_remaps() {
if (!ProjectSettings::get_singleton()->has_setting("locale/translation_remaps"))
return;
Dictionary remaps = ProjectSettings::get_singleton()->get("locale/translation_remaps");
List<Variant> keys;
remaps.get_key_list(&keys);
for (List<Variant>::Element *E = keys.front(); E; E = E->next()) {
Array langs = remaps[E->get()];
Vector<String> lang_remaps;
lang_remaps.resize(langs.size());
for (int i = 0; i < langs.size(); i++) {
lang_remaps.write[i] = langs[i];
}
translation_remaps[String(E->get())] = lang_remaps;
}
}
void ResourceLoader::clear_translation_remaps() {
translation_remaps.clear();
}
void ResourceLoader::load_path_remaps() {
if (!ProjectSettings::get_singleton()->has_setting("path_remap/remapped_paths"))
return;
PoolVector<String> remaps = ProjectSettings::get_singleton()->get("path_remap/remapped_paths");
int rc = remaps.size();
ERR_FAIL_COND(rc & 1); //must be even
PoolVector<String>::Read r = remaps.read();
for (int i = 0; i < rc; i += 2) {
path_remaps[r[i]] = r[i + 1];
}
}
void ResourceLoader::clear_path_remaps() {
path_remaps.clear();
}
void ResourceLoader::set_load_callback(ResourceLoadedCallback p_callback) {
_loaded_callback = p_callback;
}
ResourceLoadedCallback ResourceLoader::_loaded_callback = NULL;
Ref<ResourceFormatLoader> ResourceLoader::_find_custom_resource_format_loader(String path) {
for (int i = 0; i < loader_count; ++i) {
if (loader[i]->get_script_instance() && loader[i]->get_script_instance()->get_script()->get_path() == path) {
return loader[i];
}
}
return Ref<ResourceFormatLoader>();
}
bool ResourceLoader::add_custom_resource_format_loader(String script_path) {
if (_find_custom_resource_format_loader(script_path).is_valid())
return false;
Ref<Resource> res = ResourceLoader::load(script_path);
ERR_FAIL_COND_V(res.is_null(), false);
ERR_FAIL_COND_V(!res->is_class("Script"), false);
Ref<Script> s = res;
StringName ibt = s->get_instance_base_type();
bool valid_type = ClassDB::is_parent_class(ibt, "ResourceFormatLoader");
ERR_EXPLAIN("Script does not inherit a CustomResourceLoader: " + script_path);
ERR_FAIL_COND_V(!valid_type, false);
Object *obj = ClassDB::instance(ibt);
ERR_EXPLAIN("Cannot instance script as custom resource loader, expected 'ResourceFormatLoader' inheritance, got: " + String(ibt));
ERR_FAIL_COND_V(obj == NULL, false);
ResourceFormatLoader *crl = NULL;
crl = Object::cast_to<ResourceFormatLoader>(obj);
crl->set_script(s.get_ref_ptr());
ResourceLoader::add_resource_format_loader(crl);
return true;
}
void ResourceLoader::remove_custom_resource_format_loader(String script_path) {
Ref<ResourceFormatLoader> custom_loader = _find_custom_resource_format_loader(script_path);
if (custom_loader.is_valid())
remove_resource_format_loader(custom_loader);
}
void ResourceLoader::add_custom_loaders() {
// Custom loaders registration exploits global class names
String custom_loader_base_class = ResourceFormatLoader::get_class_static();
List<StringName> global_classes;
ScriptServer::get_global_class_list(&global_classes);
for (List<StringName>::Element *E = global_classes.front(); E; E = E->next()) {
StringName class_name = E->get();
StringName base_class = ScriptServer::get_global_class_native_base(class_name);
if (base_class == custom_loader_base_class) {
String path = ScriptServer::get_global_class_path(class_name);
add_custom_resource_format_loader(path);
}
}
}
void ResourceLoader::remove_custom_loaders() {
Vector<Ref<ResourceFormatLoader> > custom_loaders;
for (int i = 0; i < loader_count; ++i) {
if (loader[i]->get_script_instance()) {
custom_loaders.push_back(loader[i]);
}
}
for (int i = 0; i < custom_loaders.size(); ++i) {
remove_resource_format_loader(custom_loaders[i]);
}
}
Mutex *ResourceLoader::loading_map_mutex = NULL;
HashMap<ResourceLoader::LoadingMapKey, int, ResourceLoader::LoadingMapKeyHasher> ResourceLoader::loading_map;
void ResourceLoader::initialize() {
#ifndef NO_THREADS
loading_map_mutex = Mutex::create();
#endif
}
void ResourceLoader::finalize() {
#ifndef NO_THREADS
const LoadingMapKey *K = NULL;
while ((K = loading_map.next(K))) {
ERR_PRINTS("Exited while resource is being loaded: " + K->path);
}
loading_map.clear();
memdelete(loading_map_mutex);
loading_map_mutex = NULL;
#endif
}
ResourceLoadErrorNotify ResourceLoader::err_notify = NULL;
void *ResourceLoader::err_notify_ud = NULL;
DependencyErrorNotify ResourceLoader::dep_err_notify = NULL;
void *ResourceLoader::dep_err_notify_ud = NULL;
bool ResourceLoader::abort_on_missing_resource = true;
bool ResourceLoader::timestamp_on_load = false;
SelfList<Resource>::List ResourceLoader::remapped_list;
HashMap<String, Vector<String> > ResourceLoader::translation_remaps;
HashMap<String, String> ResourceLoader::path_remaps;
ResourceLoaderImport ResourceLoader::import = NULL;
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