godot/core/io/resource_uid.h
Rémi Verschelde f8ab79e68a Zero initialize all pointer class and struct members
This prevents the pitfall of UB when checking if they have been
assigned something valid by comparing to nullptr.
2022-04-04 19:49:50 +02:00

89 lines
3.3 KiB
C++

/*************************************************************************/
/* resource_uid.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 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. */
/*************************************************************************/
#ifndef RESOURCE_UUID_H
#define RESOURCE_UUID_H
#include "core/object/ref_counted.h"
#include "core/string/string_name.h"
#include "core/templates/ordered_hash_map.h"
class ResourceUID : public Object {
GDCLASS(ResourceUID, Object)
public:
typedef int64_t ID;
enum {
INVALID_ID = -1
};
static String get_cache_file();
private:
void *crypto = nullptr; // CryptoCore::RandomGenerator (avoid including crypto_core.h)
Mutex mutex;
struct Cache {
CharString cs;
bool saved_to_cache = false;
};
OrderedHashMap<ID, Cache> unique_ids; //unique IDs and utf8 paths (less memory used)
static ResourceUID *singleton;
uint32_t cache_entries = 0;
bool changed = false;
protected:
static void _bind_methods();
public:
String id_to_text(ID p_id) const;
ID text_to_id(const String &p_text) const;
ID create_id();
bool has_id(ID p_id) const;
void add_id(ID p_id, const String &p_path);
void set_id(ID p_id, const String &p_path);
String get_id_path(ID p_id) const;
void remove_id(ID p_id);
Error load_from_cache();
Error save_to_cache();
Error update_cache();
void clear();
static ResourceUID *get_singleton() { return singleton; }
ResourceUID();
~ResourceUID();
};
#endif // RESOURCEUUID_H