/*******************************************************************************
* Copyright (C) 2001-2004 Vintela, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
*  - Redistributions of source code must retain the above copyright notice,
*    this list of conditions and the following disclaimer.
*
*  - 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.
*
*  - Neither the name of Vintela, Inc. nor the names of its
*    contributors may be used to endorse or promote products derived from this
*    software without specific prior written permission.
*
* 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 Vintela, Inc. OR THE 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.
*******************************************************************************/

/**
 * @author Jon Carey
 * @author Dan Nuffer
 */

#include "OW_config.h"
#include "OW_IOIFCStreamBuffer.hpp"

namespace OW_NAMESPACE
{

//////////////////////////////////////////////////////////////////////////////
IOIFCStreamBuffer::IOIFCStreamBuffer(IOIFC* dev, int bufSize,
	const char* direction)
	: BaseStreamBuffer(bufSize, direction)
	, m_dev(dev)
{
}
//////////////////////////////////////////////////////////////////////////////
IOIFCStreamBuffer::~IOIFCStreamBuffer()
{
	sync();
}
//////////////////////////////////////////////////////////////////////////////
int
IOIFCStreamBuffer::buffer_from_device(char* c, int n)
{
	return m_dev->read(c,n);
}
//////////////////////////////////////////////////////////////////////////////
int
IOIFCStreamBuffer::buffer_to_device(const char* c, int n)
{
	while (n > 0)
	{
		int cnt = m_dev->write(c, n);
		if (cnt == -1) // failure
		{
			return -1;
		}
		c += cnt;
		n -= cnt;
	}
	return 0;
}

//////////////////////////////////////////////////////////////////////////////
void
IOIFCStreamBuffer::reset()
{ 
	initBuffers(); 
}

} // end namespace OW_NAMESPACE

