// DynamicBuffer.cpp

// 

// Copyright (c) 2010 Accenture. All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

// 

// Initial Contributors:

// Accenture - Initial contribution

//

#include "Misc.h"

#include "stdafx.h"

#include "console_host.h"

#include "DynamicBuffer.h"

CDynamicReadBuffer* CDynamicReadBuffer::New(int aInitialLength)

	{

	std::auto_ptr<CDynamicReadBuffer> self(new(EThrow) CDynamicReadBuffer());

	self->Construct(aInitialLength);

	return self.release();

	}

CDynamicReadBuffer::~CDynamicReadBuffer()

	{

	delete iBuf;

	}

const char* CDynamicReadBuffer::Buffer() const

	{

	return iBuf;

	}

char* CDynamicReadBuffer::Buffer(int aLength)

	{

	if (aLength > iMaxBufLength)

		{

		GrowBuf(aLength);

		}

	return iBuf;

	}

CDynamicReadBuffer::CDynamicReadBuffer() : iBuf(NULL), iMaxBufLength(0)

	{

	}

void CDynamicReadBuffer::Construct(int aInitialLength)

	{

	GrowBuf(aInitialLength);

	}

void CDynamicReadBuffer::GrowBuf(int aNewLength)

	{

	ASSERT(aNewLength > iMaxBufLength);

	char* newBuf = new(EThrow) char[aNewLength];

	delete iBuf;

	iBuf = newBuf;

	iMaxBufLength = aNewLength;

	}

CDynamicWriteBuffer* CDynamicWriteBuffer::New(int aInitialLength)

	{

	std::auto_ptr<CDynamicWriteBuffer> self(new(EThrow) CDynamicWriteBuffer());

	self->Construct(aInitialLength);

	return self.release();

	}

CDynamicWriteBuffer::~CDynamicWriteBuffer()

	{

	delete iBuf;

	}

void CDynamicWriteBuffer::Add(char* aBuf, int aLength)

	{

	if (aLength > (iMaxBufLength - iCurrentBufLength))

		{

		GrowBuf(iCurrentBufLength + aLength);

		}

	memcpy(iBuf + iCurrentBufLength, aBuf, aLength);

	iCurrentBufLength += aLength;

	}

void CDynamicWriteBuffer::Remove(int aLength)

	{

	ASSERT(aLength <= iCurrentBufLength);

	memmove(iBuf, iBuf + aLength, iCurrentBufLength - aLength);

	iCurrentBufLength -= aLength;

	}

const char* CDynamicWriteBuffer::Buffer() const

	{

	return iBuf;

	}

int CDynamicWriteBuffer::Length() const

	{

	return iCurrentBufLength;

	}

CDynamicWriteBuffer::CDynamicWriteBuffer() : iBuf(NULL), iMaxBufLength(0), iCurrentBufLength(0)

	{

	}

void CDynamicWriteBuffer::Construct(int aInitialLength)

	{

	GrowBuf(aInitialLength);

	}

void CDynamicWriteBuffer::GrowBuf(int aNewLength)

	{

	ASSERT(aNewLength > iMaxBufLength);

	char* newBuf = new(EThrow) char[aNewLength];

	if (iBuf)

		{

		memcpy(newBuf, iBuf, iCurrentBufLength);

		delete iBuf;

		}

	iBuf = newBuf;

	iMaxBufLength = aNewLength;

	}