/*
 * Copyright (C) 2016+     AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license: http://github.com/azerothcore/azerothcore-wotlk/LICENSE-GPL2
 * Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
 * Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
 */

#ifndef TRINITY_BYTECONVERTER_H
#define TRINITY_BYTECONVERTER_H

/** ByteConverter reverse your byte order.  This is use
    for cross platform where they have different endians.
 */

#include "Define.h"
#include <algorithm>

namespace ByteConverter
{
    template<size_t T>
    inline void convert(char *val)
    {
        std::swap(*val, *(val + T - 1));
        convert<T - 2>(val + 1);
    }

    template<> inline void convert<0>(char *) { }
    template<> inline void convert<1>(char *) { }           // ignore central byte

    template<typename T> inline void apply(T *val)
    {
        convert<sizeof(T)>((char *)(val));
    }
}

#if TRINITY_ENDIAN == TRINITY_BIGENDIAN
template<typename T> inline void EndianConvert(T& val) { ByteConverter::apply<T>(&val); }
template<typename T> inline void EndianConvertReverse(T&) { }
template<typename T> inline void EndianConvertPtr(void* val) { ByteConverter::apply<T>(val); }
template<typename T> inline void EndianConvertPtrReverse(void*) { }
#else
template<typename T> inline void EndianConvert(T&) { }
template<typename T> inline void EndianConvertReverse(T& val) { ByteConverter::apply<T>(&val); }
template<typename T> inline void EndianConvertPtr(void*) { }
template<typename T> inline void EndianConvertPtrReverse(void* val) { ByteConverter::apply<T>(val); }
#endif

template<typename T> void EndianConvert(T*);         // will generate link error
template<typename T> void EndianConvertReverse(T*);  // will generate link error

inline void EndianConvert(uint8&) { }
inline void EndianConvert( int8&) { }
inline void EndianConvertReverse(uint8&) { }
inline void EndianConvertReverse( int8&) { }

#endif

