hexbinaryencoder.cpp

很好用的网络封装库,不熟悉网络编程的人也可以使用。使用风格良好的标准c++编写。

//
// HexBinaryEncoder.cpp
//
// $Id: //poco/1.3/Foundation/src/HexBinaryEncoder.cpp#2 $
//
// Library: Foundation
// Package: Streams
// Module:  HexBinary
//
// 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/HexBinaryEncoder.h"


namespace Poco {


HexBinaryEncoderBuf::HexBinaryEncoderBuf(std::ostream& ostr): 
	_pos(0),
	_lineLength(72),
	_uppercase(0),
	_ostr(ostr)
{
}


HexBinaryEncoderBuf::~HexBinaryEncoderBuf()
{
	try
	{
		close();
	}
	catch (...)
	{
	}
}


void HexBinaryEncoderBuf::setLineLength(int lineLength)
{
	_lineLength = lineLength;
}


int HexBinaryEncoderBuf::getLineLength() const
{
	return _lineLength;
}


void HexBinaryEncoderBuf::setUppercase(bool flag)
{
	_uppercase = flag ? 16 : 0;
}


int HexBinaryEncoderBuf::writeToDevice(char c)
{
	static const char digits[] = "0123456789abcdef0123456789ABCDEF";
	_ostr.put(digits[_uppercase + ((c >> 4) & 0xF)]);
	++_pos;
	_ostr.put(digits[_uppercase + (c & 0xF)]);
	if (++_pos >= _lineLength && _lineLength > 0) 
	{
		_ostr << std::endl;
		_pos = 0;
	}
	return _ostr ? charToInt(c) : -1;
}


int HexBinaryEncoderBuf::close()
{
	sync();
	_ostr.flush();
	return _ostr ? 0 : -1;
}


HexBinaryEncoderIOS::HexBinaryEncoderIOS(std::ostream& ostr): _buf(ostr)
{
	poco_ios_init(&_buf);
}


HexBinaryEncoderIOS::~HexBinaryEncoderIOS()
{
}


int HexBinaryEncoderIOS::close()
{
	return _buf.close();
}


HexBinaryEncoderBuf* HexBinaryEncoderIOS::rdbuf()
{
	return &_buf;
}


HexBinaryEncoder::HexBinaryEncoder(std::ostream& ostr): HexBinaryEncoderIOS(ostr), std::ostream(&_buf)
{
}


HexBinaryEncoder::~HexBinaryEncoder()
{
}


} // namespace Poco