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68 lines
2.4 KiB
C++
68 lines
2.4 KiB
C++
/*
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* Copyright (C) 2008-2018 TrinityCore <https://www.trinitycore.org/>
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* Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef TRINITY_BYTECONVERTER_H
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#define TRINITY_BYTECONVERTER_H
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/** ByteConverter reverse your byte order. This is use
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for cross platform where they have different endians.
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*/
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#include "Define.h"
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#include <algorithm>
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namespace ByteConverter
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{
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template<size_t T>
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inline void convert(char *val)
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{
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std::swap(*val, *(val + T - 1));
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convert<T - 2>(val + 1);
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}
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template<> inline void convert<0>(char *) { }
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template<> inline void convert<1>(char *) { } // ignore central byte
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template<typename T> inline void apply(T *val)
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{
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convert<sizeof(T)>((char *)(val));
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}
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}
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#if TRINITY_ENDIAN == TRINITY_BIGENDIAN
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template<typename T> inline void EndianConvert(T& val) { ByteConverter::apply<T>(&val); }
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template<typename T> inline void EndianConvertReverse(T&) { }
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template<typename T> inline void EndianConvertPtr(void* val) { ByteConverter::apply<T>(val); }
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template<typename T> inline void EndianConvertPtrReverse(void*) { }
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#else
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template<typename T> inline void EndianConvert(T&) { }
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template<typename T> inline void EndianConvertReverse(T& val) { ByteConverter::apply<T>(&val); }
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template<typename T> inline void EndianConvertPtr(void*) { }
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template<typename T> inline void EndianConvertPtrReverse(void* val) { ByteConverter::apply<T>(val); }
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#endif
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template<typename T> void EndianConvert(T*); // will generate link error
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template<typename T> void EndianConvertReverse(T*); // will generate link error
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inline void EndianConvert(uint8&) { }
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inline void EndianConvert( int8&) { }
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inline void EndianConvertReverse(uint8&) { }
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inline void EndianConvertReverse( int8&) { }
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#endif
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