sourcemod/core/logic/LumpManager.h

117 lines
3.6 KiB
C++

/**
* vim: set ts=4 :
* =============================================================================
* Entity Lump Manager
* Copyright (C) 2021-2022 AlliedModders LLC. All rights reserved.
* =============================================================================
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, version 3.0, as published by the
* Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, AlliedModders LLC gives you permission to link the
* code of this program (as well as its derivative works) to "Half-Life 2," the
* "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
* by the Valve Corporation. You must obey the GNU General Public License in
* all respects for all other code used. Additionally, AlliedModders LLC grants
* this exception to all derivative works. AlliedModders LLC defines further
* exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
* or <http://www.sourcemod.net/license.php>.
*
* Version: $Id$
*/
#ifndef _INCLUDE_LUMPMANAGER_H_
#define _INCLUDE_LUMPMANAGER_H_
#include <vector>
#include <memory>
#include <string>
/**
* Entity lump manager. Provides a list that stores a list of key / value pairs and the
* functionality to (de)serialize it from / to an entity string.
* This file and its corresponding .cpp should be compilable independently of SourceMod;
* the SourceMod interop is located within smn_entitylump.
*
* @file lumpmanager.h
* @brief Class definition for object that parses lumps.
*/
/**
* @brief A container of key / value pairs.
*/
using EntityLumpEntry = std::vector<std::pair<std::string, std::string>>;
enum EntityLumpParseStatus {
Status_OK,
Status_UnexpectedChar,
};
/**
* @brief Result of parsing an entity lump. On a parse error, m_Status is not Status_OK and
* m_Position indicates the offset within the string that caused the parse error.
*/
struct EntityLumpParseResult {
EntityLumpParseStatus m_Status;
std::streamoff m_Position;
operator bool() const;
const char* Description() const;
};
/**
* @brief Manages entity lump entries.
*/
class EntityLumpManager
{
public:
/**
* @brief Parses the map entities string into an internal representation.
*/
EntityLumpParseResult Parse(const char* pMapEntities);
/**
* @brief Dumps the current internal representation out to an std::string.
*/
std::string Dump();
/**
* @brief Returns a weak reference to an EntityLumpEntry. Used for handles on the scripting side.
*/
std::weak_ptr<EntityLumpEntry> Get(size_t index);
/**
* @brief Removes an EntityLumpEntry at the given index, shifting down all entries after it by one.
*/
void Erase(size_t index);
/**
* @brief Inserts a new EntityLumpEntry at the given index, shifting up the entries previously at the index and after it up by one.
*/
void Insert(size_t index);
/**
* @brief Adds a new EntityLumpEntry to the end. Returns the index of the entry.
*/
size_t Append();
/**
* @brief Returns the number of EntityLumpEntry items in the list.
*/
size_t Length();
private:
std::vector<std::shared_ptr<EntityLumpEntry>> m_Entities;
};
#endif // _INCLUDE_LUMPMANAGER_H_