/*

* Copyright (c) 2005-2006 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:   Stream for storing firmware update package

*

*/

// INCLUDE FILES

#include <centralrepository.h>

#include "fotadiskstoragePrivateCRKeys.h"

#include "fotaengstream.h"

#include "fotaengine.h"

#include "fotaenginedebug.h"

// ======================= MEMBER FUNCTIONS ==================================

// ---------------------------------------------------------------------------

// RFotaWriteStream::RFotaWriteStream()

// ---------------------------------------------------------------------------

RFotaWriteStream::RFotaWriteStream() : RWriteStream (), iWriteLimit(0)

    {

    iFotaEngineSession  = 0;

    iBuf.iMyWriteStream = this;

    }

// ---------------------------------------------------------------------------

// RFotaWriteStream::OpenL()

// Opens stream

// ---------------------------------------------------------------------------

TInt RFotaWriteStream::OpenL(const TInt /*aPkgId*/)

    {

    FLOG(_L( "[RFotaEngineSession] RFotaWriteStream::OpenL() >>" ) );

    // Get write limit 

    TInt            writelimit( KDefaultWriteLimit );

    CRepository*    centrep( NULL);

    TRAPD( err, centrep = CRepository::NewL( KCRUidFotaDiskStorage ) );

    if(err) FLOG(_L(" writelimit not defined in centrep") );

    if ( centrep ) 

        {

        err = centrep->Get(  KFotaDiskSpaceReservationKey, writelimit );

        }

    iWriteLimit = writelimit;

    delete centrep;

    iBuf.ResetL();

    Attach ( &iBuf );  // set sink

    FLOG(_L( "[RFotaEngineSession] RFotaWriteStream::OpenL() <<" ) );

    return 0;

    }

// ---------------------------------------------------------------------------

// TDP2StreamBuf::Reset()

// Redefine write area.

// ---------------------------------------------------------------------------

void TDP2StreamBuf::ResetL()

    {

  	FLOG(_L("TDP2StreamBuf::ResetL() >>" ));

    // Define write area (chunk)

    TArea   a (EWrite) ;

    TInt    limitedwritearea(-1);

    TInt    chunksize = iMyWriteStream->iFotaEngineSession->iChunk.Size();

   // TInt    writelimit = iMyWriteStream->iWriteLimit;

/*	08-nov-06 flexible mem handling overrides this

    // If writelimit is being exceeded, raise error

    if ( iBytesWritten > writelimit ) 

        {

        User::Leave ( KErrOverflow );

        }

*/        

/*		08-nov-06 flexible mem handling overrides this

    // Ensure that we cant go beyond write limit

    if ( (iSentChunks+1) * chunksize > writelimit )

        {

        limitedwritearea = writelimit - iBytesWritten;

        // 0-size writearea would crash writestream base classes

        if ( limitedwritearea == 0 )

            {

            limitedwritearea += 1;

            }        

        }

*/

    // Define write area

    TUint8* p1 = iMyWriteStream->iFotaEngineSession->iChunk.Base();

    TUint8* p2;

    p2 = p1 + chunksize;

    /* // dead code

    if ( limitedwritearea == -1 ) 

        {

        p2 = p1 + chunksize;

        }

    else

        {

        p2 = p1 + limitedwritearea;

        }

        */

    SetBuf  (a,p1 , p2 );

  	FLOG(_L("TDP2StreamBuf::ResetL() <<" ));

    }

// ---------------------------------------------------------------------------

// TDP2StreamBuf::DoRelease()

// Stream is released. This is called when data has been comitted to stream.

// ---------------------------------------------------------------------------

void TDP2StreamBuf::DoRelease()

    {

    FLOG(_L("TDP2StreamBuf::DoRelease() >>" ));

    TRAPD(err,  OverflowL() );

    if ( err ) FLOG(_L(" DoRelease overflow err %d"),err);

    this->iMyWriteStream->iFotaEngineSession->ReleaseChunkHandle();

    FLOG(_L("TDP2StreamBuf::DoRelease() <<" ));

    }

// ---------------------------------------------------------------------------

// TDP2StreamBuf::TDP2StreamBuf()

// ---------------------------------------------------------------------------

TDP2StreamBuf::TDP2StreamBuf() : iBytesWritten(0), iSentChunks(0)

                    ,iMyWriteStream(0)

    {

    }

// ---------------------------------------------------------------------------

// TDP2StreamBuf::UnderflowL(TInt aMaxLength)

// ---------------------------------------------------------------------------

TInt TDP2StreamBuf::UnderflowL(TInt aMaxLength)

    {

    FLOG(_L("TDP2StreamBuf::UnderflowL %d"), aMaxLength );

    return KErrNone;

    }

// ---------------------------------------------------------------------------

// TDP2StreamBuf::OverflowL()

// Send buffer data to server. Reset buffer.

// ---------------------------------------------------------------------------

void TDP2StreamBuf::OverflowL()

    {

    FLOG(_L("TDP2StreamBuf::OverflowL >>") );

    // Send pointers to data to server. Then reset.

    TUint8* p1 = iMyWriteStream->iFotaEngineSession->iChunk.Base();

    TUint8* p2 = Ptr(EWrite);                           // start point of 

                                                        // write area

    FLOG(_L("TDP2StreamBuf::OverflowL ptrs 0x%x  0x%x"),p1,p2 );

    TPtr8   data(p1, p2-p1, p2-p1 );

    iBytesWritten += p2-p1;

    if ( p2-p1 >0 )

        {

        iMyWriteStream->iFotaEngineSession->SendChunkL(p1,p2);

        iSentChunks++;

        }

    ResetL();

    FLOG(_L("TDP2StreamBuf::OverflowL <<") );

    }

// End of file