binarywriter.cpp

This software aims to create an applet and panel tools to manage a wireless interface card, such as

//
// BinaryWriter.cpp
//
// $Id: //poco/Main/Foundation/src/BinaryWriter.cpp#5 $
//
// Copyright (c) 2004, Guenter Obiltschnig/Applied Informatics.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
//
// 3. Redistributions in any form must be accompanied by information on
//    how to obtain complete source code for this software and any
//    accompanying software that uses this software.  The source code
//    must either be included in the distribution or be available for no
//    more than the cost of distribution plus a nominal fee, and must be
//    freely redistributable under reasonable conditions.  For an
//    executable file, complete source code means the source code for all
//    modules it contains.  It does not include source code for modules or
//    files that typically accompany the major components of the operating
//    system on which the executable file runs.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//


#include "Foundation/BinaryWriter.h"
#include "Foundation/ByteOrder.h"
#include <string.h>


Foundation_BEGIN


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
}


BinaryWriter::~BinaryWriter()
{
}


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 (int 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 (int 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) 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


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


void BinaryWriter::writeBOM()
{
	UInt32 value = 0xFEFF;
	if (_flipBytes) value = ByteOrder::flipBytes(value);
	_ostr.write((const char*) &value, sizeof(value));
}


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


Foundation_END