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BinaryWriter.cpp
//
// BinaryWriter.cpp
//
// $Id: //poco/1.3/Foundation/src/BinaryWriter.cpp#5 $
//
// Library: Foundation
// Package: Streams
// Module:  BinaryReaderWriter
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
// 
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//


#include "Poco/BinaryWriter.h"
#include "Poco/ByteOrder.h"
#include <cstring>


namespace Poco {


BinaryWriter::BinaryWriter(std::ostream& ostr, StreamByteOrder byteOrder):
      _ostr(ostr)
{
#if defined(POCO_ARCH_BIG_ENDIAN)
      _flipBytes = (byteOrder == LITTLE_ENDIAN_BYTE_ORDER);
#else
      _flipBytes = (byteOrder == BIG_ENDIAN_BYTE_ORDER);
#endif
}


00056 BinaryWriter::~BinaryWriter()
{
}


00061 BinaryWriter& BinaryWriter::operator << (bool value)
{
      _ostr.write((const char*) &value, sizeof(value));
      return *this;
}


BinaryWriter& BinaryWriter::operator << (char value)
{
      _ostr.write((const char*) &value, sizeof(value));
      return *this;
}


BinaryWriter& BinaryWriter::operator << (unsigned char value)
{
      _ostr.write((const char*) &value, sizeof(value));
      return *this;
}


BinaryWriter& BinaryWriter::operator << (signed char value)
{
      _ostr.write((const char*) &value, sizeof(value));
      return *this;
}


BinaryWriter& BinaryWriter::operator << (short value)
{
      if (_flipBytes)
      {
            short fValue = ByteOrder::flipBytes(value);
            _ostr.write((const char*) &fValue, sizeof(fValue));
      }
      else
      {
            _ostr.write((const char*) &value, sizeof(value));
      }
      return *this;
}


BinaryWriter& BinaryWriter::operator << (unsigned short value)
{
      if (_flipBytes)
      {
            unsigned short fValue = ByteOrder::flipBytes(value);
            _ostr.write((const char*) &fValue, sizeof(fValue));
      }
      else
      {
            _ostr.write((const char*) &value, sizeof(value));
      }
      return *this;
}


BinaryWriter& BinaryWriter::operator << (int value)
{
      if (_flipBytes)
      {
            int fValue = ByteOrder::flipBytes(value);
            _ostr.write((const char*) &fValue, sizeof(fValue));
      }
      else
      {
            _ostr.write((const char*) &value, sizeof(value));
      }
      return *this;
}


BinaryWriter& BinaryWriter::operator << (unsigned int value)
{
      if (_flipBytes)
      {
            unsigned int fValue = ByteOrder::flipBytes(value);
            _ostr.write((const char*) &fValue, sizeof(fValue));
      }
      else
      {
            _ostr.write((const char*) &value, sizeof(value));
      }
      return *this;
}


BinaryWriter& BinaryWriter::operator << (long value)
{
      if (_flipBytes)
      {
#if defined(POCO_LONG_IS_64_BIT)
            long fValue = ByteOrder::flipBytes((Int64) value);
#else
            long fValue = ByteOrder::flipBytes((Int32) value);
#endif
            _ostr.write((const char*) &fValue, sizeof(fValue));
      }
      else
      {
            _ostr.write((const char*) &value, sizeof(value));
      }
      return *this;
}


BinaryWriter& BinaryWriter::operator << (unsigned long value)
{
      if (_flipBytes)
      {
#if defined(POCO_LONG_IS_64_BIT)
            long fValue = ByteOrder::flipBytes((UInt64) value);
#else
            long fValue = ByteOrder::flipBytes((UInt32) value);
#endif
            _ostr.write((const char*) &fValue, sizeof(fValue));
      }
      else
      {
            _ostr.write((const char*) &value, sizeof(value));
      }
      return *this;
}


BinaryWriter& BinaryWriter::operator << (float value)
{
      if (_flipBytes)
      {
            const char* ptr = (const char*) &value;
            ptr += sizeof(value);
            for (unsigned i = 0; i < sizeof(value); ++i)
                  _ostr.write(--ptr, 1);
      }
      else
      {
            _ostr.write((const char*) &value, sizeof(value));
      }
      return *this;
}


BinaryWriter& BinaryWriter::operator << (double value)
{
      if (_flipBytes)
      {
            const char* ptr = (const char*) &value;
            ptr += sizeof(value);
            for (unsigned i = 0; i < sizeof(value); ++i)
                  _ostr.write(--ptr, 1);
      }
      else
      {
            _ostr.write((const char*) &value, sizeof(value));
      }
      return *this;
}


#if defined(POCO_HAVE_INT64) && !defined(POCO_LONG_IS_64_BIT)


BinaryWriter& BinaryWriter::operator << (Int64 value)
{
      if (_flipBytes)
      {
            Int64 fValue = ByteOrder::flipBytes(value);
            _ostr.write((const char*) &fValue, sizeof(fValue));
      }
      else
      {
            _ostr.write((const char*) &value, sizeof(value));
      }
      return *this;
}


BinaryWriter& BinaryWriter::operator << (UInt64 value)
{
      if (_flipBytes)
      {
            UInt64 fValue = ByteOrder::flipBytes(value);
            _ostr.write((const char*) &fValue, sizeof(fValue));
      }
      else
      {
            _ostr.write((const char*) &value, sizeof(value));
      }
      return *this;
}


#endif


BinaryWriter& BinaryWriter::operator << (const std::string& value)
{
      UInt32 length = (UInt32) value.size();
      write7BitEncoded(length);
      _ostr.write(value.data(), length);
      return *this;
}


BinaryWriter& BinaryWriter::operator << (const char* value)
{
      poco_check_ptr (value);
      UInt32 length = (UInt32) std::strlen(value);
      write7BitEncoded(length);
      _ostr.write(value, length);
      return *this;
}


void BinaryWriter::write7BitEncoded(UInt32 value)
{
      do
      {
            unsigned char c = (unsigned char) (value & 0x7F);
            value >>= 7;
            if (value) c |= 0x80;
            _ostr.write((const char*) &c, 1);
      }
      while (value);
}


#if defined(POCO_HAVE_INT64)


void BinaryWriter::write7BitEncoded(UInt64 value)
{
      do
      {
            unsigned char c = (unsigned char) (value & 0x7F);
            value >>= 7;
            if (value) c |= 0x80;
            _ostr.write((const char*) &c, 1);
      }
      while (value);
}


#endif


00308 void BinaryWriter::writeRaw(const std::string& rawData)
{
      _ostr.write(rawData.data(), (std::streamsize) rawData.length());
}


00314 void BinaryWriter::writeRaw(const char* buffer, std::streamsize length)
{
      _ostr.write(buffer, length);
}


00320 void BinaryWriter::writeBOM()
{
      UInt16 value = 0xFEFF;
      if (_flipBytes) value = ByteOrder::flipBytes(value);
      _ostr.write((const char*) &value, sizeof(value));
}


00328 void BinaryWriter::flush()
{
      _ostr.flush();
}


} // namespace Poco

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