1 files changed, 68 insertions, 0 deletions
diff --git a/src/common/Utilities/ByteConverter.h b/src/common/Utilities/ByteConverter.h
new file mode 100644
index 00000000000..a077de3eb0b
--- /dev/null
+++ b/src/common/Utilities/ByteConverter.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2008-2015 TrinityCore <http://www.trinitycore.org/>
+ * Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
+ *
+ * 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 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
+