digeststream.cpp

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

//
// DigestStream.cpp
//
// $Id: //poco/Main/Foundation/src/DigestStream.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/DigestStream.h"


Foundation_BEGIN


const int DigestBuf::BUFFER_SIZE = 256;


DigestBuf::DigestBuf(DigestEngine& eng): 
	BufferedStreamBuf(BUFFER_SIZE, std::ios::out), 
	_eng(eng), 
	_pOstr(0), 
	_pIstr(0)
{
}


DigestBuf::DigestBuf(DigestEngine& eng, std::istream& istr): 
	BufferedStreamBuf(BUFFER_SIZE, std::ios::in), 
	_eng(eng), 
	_pIstr(&istr), 
	_pOstr(0)
{
}


DigestBuf::DigestBuf(DigestEngine& eng, std::ostream& ostr): 
	BufferedStreamBuf(BUFFER_SIZE, std::ios::in), 
	_eng(eng), 
	_pIstr(0), 
	_pOstr(&ostr)
{
}


DigestBuf::~DigestBuf()
{
}


int DigestBuf::readFromDevice(char* buffer, std::streamsize length)
{
	if (_pIstr && _pIstr->good())
	{
		_pIstr->read(buffer, length);
		std::streamsize n = _pIstr->gcount();
		if (n > 0) _eng.update(buffer, n);
		return n;
	}
	return -1;
}


int DigestBuf::writeToDevice(const char* buffer, std::streamsize length)
{
	_eng.update(buffer, (unsigned) length);
	if (_pOstr) _pOstr->write(buffer, length);
	return length;
}


void DigestBuf::close()
{
	sync();
	if (_pOstr) _pOstr->flush();
}


DigestIOS::DigestIOS(DigestEngine& eng): _buf(eng)
{
	init(&_buf);
}


DigestIOS::DigestIOS(DigestEngine& eng, std::istream& istr): _buf(eng, istr)
{
	init(&_buf);
}


DigestIOS::DigestIOS(DigestEngine& eng, std::ostream& ostr): _buf(eng, ostr)
{
	init(&_buf);
}


DigestIOS::~DigestIOS()
{
}


DigestBuf* DigestIOS::rdbuf()
{
	return &_buf;
}


DigestInputStream::DigestInputStream(DigestEngine& eng, std::istream& istr): 
	DigestIOS(eng, istr), 
	std::istream(&_buf)
{
}


DigestInputStream::~DigestInputStream()
{
}


DigestOutputStream::DigestOutputStream(DigestEngine& eng): 
	DigestIOS(eng), 
	std::ostream(&_buf)
{
}


DigestOutputStream::DigestOutputStream(DigestEngine& eng, std::ostream& ostr): 
	DigestIOS(eng, ostr), 
	std::ostream(&_buf)
{
}


DigestOutputStream::~DigestOutputStream()
{
}


void DigestOutputStream::close()
{
	_buf.close();
}


Foundation_END