// Copyright (c) 2001-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "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:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

// This file contains the implementation of the SMS buffer

// 

//

/**

 @file

*/

#include "gsmubuf.h"

#include "Gsmumain.h"

#include <txtetext.h>

/**

 *  Internalises the object.

 *  

 *  @param aStream Stream to read from

 *  @capability None

 */

EXPORT_C void CSmsBufferBase::InternalizeL(RReadStream& aStream)

	{

	Reset();

	TInt length=aStream.ReadInt32L();

	TBuf<EMaxBufLength> buf;

	for (TInt pos=0; pos<length; pos+=EMaxBufLength)

		{

		TInt buflength=(pos+EMaxBufLength)<=length? EMaxBufLength: length-pos;

		aStream.ReadL(buf,buflength);

		InsertL(pos,buf);

		}

	} // CSmsBufferBase::InternalizeL

/**

 *  Externalises the object.

 *  

 *  @param aStream Stream to write to

 *  @capability None

 */

EXPORT_C void CSmsBufferBase::ExternalizeL(RWriteStream& aStream) const

	{

	TInt length=Length();

	aStream.WriteInt32L(length);

	for (TInt pos=0; pos<length; pos+=EMaxBufLength)

		{

		TBuf<EMaxBufLength> buf;

		TInt buflength=(pos+EMaxBufLength)<=length? EMaxBufLength: length-pos;

		Extract(buf,pos,buflength);

		aStream.WriteL(buf,buflength);

		}

	} // CSmsBufferBase::ExternalizeL

/**

 *  Allocates and constructs the buffer.

 *  

 *  @return New CSmsBuffer object

 *  @capability None

 */

EXPORT_C CSmsBuffer* CSmsBuffer::NewL()

	{

	CSmsBuffer* smsbuffer=new(ELeave) CSmsBuffer();

	CleanupStack::PushL(smsbuffer);

	smsbuffer->iBuffer=new(ELeave) CArrayFixSeg<TText>(EMaxBufLength);

	CleanupStack::Pop();

	return smsbuffer;

	} // CSmsBuffer::NewL

/**

 *  Destructor, frees resource.

 *  @capability None

 */

EXPORT_C CSmsBuffer::~CSmsBuffer()

	{

    delete iBuffer;

    } // CSmsBuffer::NewL

/**

 *  Gets the amount of space currently used in the buffer.

 *  

 *  @return Amount of space currently used in the buffer

 *  @capability None

 */

EXPORT_C TInt CSmsBuffer::Length() const

	{

	return iBuffer->Count();

	} // CSmsBuffer::Length

/**

 *  Extracts buffer data to a descriptor.

 *  

 *  @param aBuf On return, buffer data

 *  @param aPos Position within buffer to begin reading

 *  @param aLength The amount of data to read from the buffer

 *  @capability None

 */

EXPORT_C void CSmsBuffer::Extract(TDes& aBuf,TInt aPos,TInt aLength) const

	{

	aBuf.SetLength(aLength);

	for (TInt i=0; i<aLength; i++)

		aBuf[i]=iBuffer->At(aPos+i);

	} // CSmsBuffer::Extract

/**

 *  Inserts data into the buffer.

 *  

 *  @param aPos Position in the buffer to insert the data

 *  @param aBuf The data to insert into the buffer

 *  @capability None

 */

EXPORT_C void CSmsBuffer::InsertL(TInt aPos,const TDesC& aBuf)

	{

	iBuffer->InsertL(aPos,aBuf.Ptr(),aBuf.Length());

	} // CSmsBuffer::InsertL

/**

 *  Deletes data from the buffer.

 *  

 *  @param aPos Position in the buffer to delete the data

 *  @param aLength The amount of data to delete from the buffer

 *  @capability None

 */

EXPORT_C void CSmsBuffer::DeleteL(TInt aPos,TInt aLength)

	{

	iBuffer->Delete(aPos,aLength);

	} // CSmsBuffer::DeleteL

/**

 *  Resets the buffer.

 *  @capability None

 */

EXPORT_C void CSmsBuffer::Reset()

	{

	iBuffer->Reset();

	} // CSmsBuffer::Reset

CSmsBuffer::CSmsBuffer()

	{

	// NOP

	} // CSmsBuffer::CSmsBuffer

/**

 *  Allocates and constructs the buffer.

 *  

 *  @param aText Text object to use as buffer

 *  @return New CSmsEditorBuffer object

 *  @capability None

 */

EXPORT_C CSmsEditorBuffer* CSmsEditorBuffer::NewL(CEditableText& aText)

	{

	CSmsEditorBuffer* smseditorbuffer=new(ELeave) CSmsEditorBuffer(aText);

	CleanupStack::PushL(smseditorbuffer);

	CleanupStack::Pop();

	return smseditorbuffer;

	} // CSmsEditorBuffer::NewL

/**

 *  Destructor.

 *  @capability None

 */

EXPORT_C CSmsEditorBuffer::~CSmsEditorBuffer()

	{

	// NOP

    } // CSmsEditorBuffer::NewL

/**

 *  Gets the number of characters in the buffer.

 *  

 *  @return The number of characters in the buffer.

 *  @capability None

 */

EXPORT_C TInt CSmsEditorBuffer::Length() const

	{

	return iText.DocumentLength();

	} // CSmsEditorBuffer::Length

/**

 *  Extracts buffer data to a descriptor.

 *  

 *  @param aBuf On return, buffer data

 *  @param aPos Position within buffer to begin reading

 *  @param aLength The amount of data to read from the buffer

 *  @capability None

 */

EXPORT_C void CSmsEditorBuffer::Extract(TDes& aBuf,TInt aPos,TInt aLength) const

	{

	iText.Extract(aBuf,aPos,aLength);

	} // CSmsEditorBuffer::Extract

/**

 *  Inserts data into the buffer.

 *  

 *  @param aPos Position in the buffer to insert the data

 *  @param aBuf The data to insert into the buffer

 *  @capability None

 */

EXPORT_C void CSmsEditorBuffer::InsertL(TInt aPos,const TDesC& aBuf)

	{

	iText.InsertL(aPos,aBuf);

	} // CSmsEditorBuffer::InsertL

/**

 *  Deletes data from the buffer.

 *  

 *  @param aPos Position in the buffer to delete the data

 *  @param aLength The amount of data to delete from the buffer

 *  @capability None

 */

EXPORT_C void CSmsEditorBuffer::DeleteL(TInt aPos,TInt aLength)

	{

	iText.DeleteL(aPos,aLength);

	} // CSmsEditorBuffer::DeleteL

/**

 *  Reset the buffer.

 *  @capability None

 */

EXPORT_C void CSmsEditorBuffer::Reset()

	{

	iText.Reset();

	} // CSmsEditorBuffer::Reset

CSmsEditorBuffer::CSmsEditorBuffer(CEditableText& aText):

    iText(aText)

    {

    // NOP

    } // CSmsEditorBuffer::CSmsEditorBuffer