ByteOrder.h++

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/* ---------------------------------------------------------------------------
   commonc++ - A C++ Common Class Library
   Copyright (C) 2005-2009  Mark A Lindner

   This file is part of commonc++.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with this library; if not, write to the Free
   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   ---------------------------------------------------------------------------
*/

#ifndef __ccxx_ByteOrder_hxx
#define __ccxx_ByteOrder_hxx

#include <commonc++/Common.h++>

#ifdef CCXX_OS_WINDOWS
#include <winsock2.h>
#endif

#ifdef CCXX_OS_POSIX
#include <netinet/in.h>
#endif

namespace ccxx {

class COMMONCPP_API ByteOrder
{
  public:

  inline static uint16_t hostToNetwork(uint16_t n) throw()
  { return(htons(n)); }

  inline static uint32_t hostToNetwork(uint32_t n) throw()
  { return(htonl(n)); }

  static uint64_t hostToNetwork(uint64_t n) throw();

  inline static uint16_t networkToHost(uint16_t n) throw()
  { return(ntohs(n)); }

  inline static uint32_t networkToHost(uint32_t n) throw()
  { return(ntohl(n)); }

  static uint64_t networkToHost(uint64_t n) throw();

  static bool isBigEndian() throw();

  inline static bool isLittleEndian() throw()
  { return(!isBigEndian()); }

  inline static Endianness getEndianness() throw()
  { return(isBigEndian() ? BigEndian : LittleEndian); }

  template<typename T> static T & reverseBytes(T &value) throw()
  {
    _reverseBytes(reinterpret_cast<byte_t *>(&value), sizeof(T));
    return(value);
  }

  private:

  static void _reverseBytes(byte_t *buf, size_t length) throw();

  ByteOrder(); // not supported
  CCXX_COPY_DECLS(ByteOrder);
};

}; // namespace ccxx

#endif // __ccxx_ByteOrder_hxx

/* end of header file */