DB2HotfixGenerator.h

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/*
 * This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 *
 * 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/>.
 */
 
#ifndef DB2HotfixGenerator_h__
#define DB2HotfixGenerator_h__
 
#include "DB2Store.h"
#include <initializer_list>
 
class TC_GAME_API DB2HotfixGeneratorBase
{
public:
 static void LogMissingRecord(std::string const& storageName, uint32 recordId);
 static void AddClientHotfix(uint32 tableHash, uint32 recordId);
};
 
template<class T>
class DB2HotfixGenerator : private DB2HotfixGeneratorBase
{
public:
 explicit DB2HotfixGenerator(DB2Storage<T>& storage) : _storage(storage), _count(0) { }
 
 void ApplyHotfix(uint32 id, void(*fixer)(T*), bool notifyClient = false) { ApplyHotfix({ id }, fixer, notifyClient); }
 void ApplyHotfix(std::initializer_list<uint32> ids, void(*fixer)(T*), bool notifyClient = false) { ApplyHotfix(ids.begin(), ids.end(), fixer, notifyClient); }
 
 template<class I, class = typename std::enable_if<!std::is_void<decltype(*std::begin(std::declval<I>()))>::value>::type>
 void ApplyHotfix(I const& ids, void(*fixer)(T*), bool notifyClient = false) { ApplyHotfix(std::begin(ids), std::end(ids), fixer, notifyClient); }
 
 uint32 GetAppliedHotfixesCount() const { return _count; }
 
private:
 void ApplyHotfix(uint32 const* begin, uint32 const* end, void(*fixer)(T*), bool notifyClient)
 {
 while (begin != end)
 {
 uint32 id = *begin++;
 T const* entry = _storage.LookupEntry(id);
 if (!entry)
 {
 DB2HotfixGeneratorBase::LogMissingRecord(_storage.GetFileName().c_str(), id);
 continue;
 }
 
 fixer(const_cast<T*>(entry));
 ++_count;
 
 if (notifyClient)
 DB2HotfixGeneratorBase::AddClientHotfix(_storage.GetTableHash(), id);
 }
 }
 
 DB2Storage<T>& _storage;
 uint32 _count;
};
 
#endif // DB2HotfixGenerator_h__