godot/core/io/resource_saver.cpp
2021-07-24 17:18:12 +02:00

273 lines
9.4 KiB
C++

/*************************************************************************/
/* resource_saver.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 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_saver.h"
#include "core/config/project_settings.h"
#include "core/io/file_access.h"
#include "core/io/resource_loader.h"
#include "core/object/script_language.h"
Ref<ResourceFormatSaver> ResourceSaver::saver[MAX_SAVERS];
int ResourceSaver::saver_count = 0;
bool ResourceSaver::timestamp_on_save = false;
ResourceSavedCallback ResourceSaver::save_callback = nullptr;
ResourceSaverGetResourceIDForPath ResourceSaver::save_get_id_for_path = nullptr;
Error ResourceFormatSaver::save(const String &p_path, const RES &p_resource, uint32_t p_flags) {
if (get_script_instance() && get_script_instance()->has_method("_save")) {
return (Error)get_script_instance()->call("_save", p_path, p_resource, p_flags).operator int64_t();
}
return ERR_METHOD_NOT_FOUND;
}
bool ResourceFormatSaver::recognize(const RES &p_resource) const {
if (get_script_instance() && get_script_instance()->has_method("_recognize")) {
return get_script_instance()->call("_recognize", p_resource);
}
return false;
}
void ResourceFormatSaver::get_recognized_extensions(const RES &p_resource, List<String> *p_extensions) const {
if (get_script_instance() && get_script_instance()->has_method("_get_recognized_extensions")) {
PackedStringArray exts = get_script_instance()->call("_get_recognized_extensions", p_resource);
{
const String *r = exts.ptr();
for (int i = 0; i < exts.size(); ++i) {
p_extensions->push_back(r[i]);
}
}
}
}
void ResourceFormatSaver::_bind_methods() {
{
PropertyInfo arg0 = PropertyInfo(Variant::STRING, "path");
PropertyInfo arg1 = PropertyInfo(Variant::OBJECT, "resource", PROPERTY_HINT_RESOURCE_TYPE, "Resource");
PropertyInfo arg2 = PropertyInfo(Variant::INT, "flags");
BIND_VMETHOD(MethodInfo(Variant::INT, "_save", arg0, arg1, arg2));
}
BIND_VMETHOD(MethodInfo(Variant::PACKED_STRING_ARRAY, "_get_recognized_extensions", PropertyInfo(Variant::OBJECT, "resource", PROPERTY_HINT_RESOURCE_TYPE, "Resource")));
BIND_VMETHOD(MethodInfo(Variant::BOOL, "_recognize", PropertyInfo(Variant::OBJECT, "resource", PROPERTY_HINT_RESOURCE_TYPE, "Resource")));
}
Error ResourceSaver::save(const String &p_path, const RES &p_resource, uint32_t p_flags) {
String extension = p_path.get_extension();
Error err = ERR_FILE_UNRECOGNIZED;
for (int i = 0; i < saver_count; i++) {
if (!saver[i]->recognize(p_resource)) {
continue;
}
List<String> extensions;
bool recognized = false;
saver[i]->get_recognized_extensions(p_resource, &extensions);
for (String &E : extensions) {
if (E.nocasecmp_to(extension) == 0) {
recognized = true;
}
}
if (!recognized) {
continue;
}
String old_path = p_resource->get_path();
String local_path = ProjectSettings::get_singleton()->localize_path(p_path);
RES rwcopy = p_resource;
if (p_flags & FLAG_CHANGE_PATH) {
rwcopy->set_path(local_path);
}
err = saver[i]->save(p_path, p_resource, p_flags);
if (err == OK) {
#ifdef TOOLS_ENABLED
((Resource *)p_resource.ptr())->set_edited(false);
if (timestamp_on_save) {
uint64_t mt = FileAccess::get_modified_time(p_path);
((Resource *)p_resource.ptr())->set_last_modified_time(mt);
}
#endif
if (p_flags & FLAG_CHANGE_PATH) {
rwcopy->set_path(old_path);
}
if (save_callback && p_path.begins_with("res://")) {
save_callback(p_resource, p_path);
}
return OK;
}
}
return err;
}
void ResourceSaver::set_save_callback(ResourceSavedCallback p_callback) {
save_callback = p_callback;
}
void ResourceSaver::get_recognized_extensions(const RES &p_resource, List<String> *p_extensions) {
for (int i = 0; i < saver_count; i++) {
saver[i]->get_recognized_extensions(p_resource, p_extensions);
}
}
void ResourceSaver::add_resource_format_saver(Ref<ResourceFormatSaver> p_format_saver, bool p_at_front) {
ERR_FAIL_COND_MSG(p_format_saver.is_null(), "It's not a reference to a valid ResourceFormatSaver object.");
ERR_FAIL_COND(saver_count >= MAX_SAVERS);
if (p_at_front) {
for (int i = saver_count; i > 0; i--) {
saver[i] = saver[i - 1];
}
saver[0] = p_format_saver;
saver_count++;
} else {
saver[saver_count++] = p_format_saver;
}
}
void ResourceSaver::remove_resource_format_saver(Ref<ResourceFormatSaver> p_format_saver) {
ERR_FAIL_COND_MSG(p_format_saver.is_null(), "It's not a reference to a valid ResourceFormatSaver object.");
// Find saver
int i = 0;
for (; i < saver_count; ++i) {
if (saver[i] == p_format_saver) {
break;
}
}
ERR_FAIL_COND(i >= saver_count); // Not found
// Shift next savers up
for (; i < saver_count - 1; ++i) {
saver[i] = saver[i + 1];
}
saver[saver_count - 1].unref();
--saver_count;
}
Ref<ResourceFormatSaver> ResourceSaver::_find_custom_resource_format_saver(String path) {
for (int i = 0; i < saver_count; ++i) {
if (saver[i]->get_script_instance() && saver[i]->get_script_instance()->get_script()->get_path() == path) {
return saver[i];
}
}
return Ref<ResourceFormatSaver>();
}
bool ResourceSaver::add_custom_resource_format_saver(String script_path) {
if (_find_custom_resource_format_saver(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, "ResourceFormatSaver");
ERR_FAIL_COND_V_MSG(!valid_type, false, "Script does not inherit a CustomResourceSaver: " + script_path + ".");
Object *obj = ClassDB::instantiate(ibt);
ERR_FAIL_COND_V_MSG(obj == nullptr, false, "Cannot instance script as custom resource saver, expected 'ResourceFormatSaver' inheritance, got: " + String(ibt) + ".");
Ref<ResourceFormatSaver> crl = Object::cast_to<ResourceFormatSaver>(obj);
crl->set_script(s);
ResourceSaver::add_resource_format_saver(crl);
return true;
}
void ResourceSaver::remove_custom_resource_format_saver(String script_path) {
Ref<ResourceFormatSaver> custom_saver = _find_custom_resource_format_saver(script_path);
if (custom_saver.is_valid()) {
remove_resource_format_saver(custom_saver);
}
}
void ResourceSaver::add_custom_savers() {
// Custom resource savers exploits global class names
String custom_saver_base_class = ResourceFormatSaver::get_class_static();
List<StringName> global_classes;
ScriptServer::get_global_class_list(&global_classes);
for (StringName &class_name : global_classes) {
StringName base_class = ScriptServer::get_global_class_native_base(class_name);
if (base_class == custom_saver_base_class) {
String path = ScriptServer::get_global_class_path(class_name);
add_custom_resource_format_saver(path);
}
}
}
void ResourceSaver::remove_custom_savers() {
Vector<Ref<ResourceFormatSaver>> custom_savers;
for (int i = 0; i < saver_count; ++i) {
if (saver[i]->get_script_instance()) {
custom_savers.push_back(saver[i]);
}
}
for (int i = 0; i < custom_savers.size(); ++i) {
remove_resource_format_saver(custom_savers[i]);
}
}
ResourceUID::ID ResourceSaver::get_resource_id_for_path(const String &p_path, bool p_generate) {
if (save_get_id_for_path) {
return save_get_id_for_path(p_path, p_generate);
}
return ResourceUID::INVALID_ID;
}
void ResourceSaver::set_get_resource_id_for_path(ResourceSaverGetResourceIDForPath p_callback) {
save_get_id_for_path = p_callback;
}