/*

* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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:  Implementation of CHttpCacheEntry

*

*/

// INCLUDE FILES

#include "HttpCacheEntry.h"

#include "HttpCacheEvictionHandler.h"

#include "HttpCacheStreamHandler.h"

#include "HttpCacheUtil.h"

#include <s32file.h>

// EXTERNAL DATA STRUCTURES

// EXTERNAL FUNCTION PROTOTYPES

// CONSTANTS

const TInt CHttpCacheEntry::iOffset = _FOFF( CHttpCacheEntry, iSlink );

// MACROS

// LOCAL CONSTANTS AND MACROS

// MODULE DATA STRUCTURES

// LOCAL FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

// ============================= LOCAL FUNCTIONS ===============================

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

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

// CHttpCacheEntry::CHttpCacheEntry

// C++ default constructor can NOT contain any code, that

// might leave.

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

//

CHttpCacheEntry::CHttpCacheEntry(

    CHttpCacheEvictionHandler& aEvictionHandler )

    : iState( ECacheUninitialized ),

      iEvictionHandler( &aEvictionHandler )

    {

    }

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

// CHttpCacheEntry::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CHttpCacheEntry::ConstructL(

    const TDesC8& aUrl )

    {

    iUrl = aUrl.AllocL();

    iFileName = KNullDesC().AllocL();

    }

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

// CHttpCacheEntry::NewL

// Two-phased constructor.

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

//

CHttpCacheEntry* CHttpCacheEntry::NewL(

    const TDesC8& aUrl,

    CHttpCacheEvictionHandler& aEvictionHandler )

    {

    CHttpCacheEntry* self = new( ELeave ) CHttpCacheEntry( aEvictionHandler );

    CleanupStack::PushL( self );

    self->ConstructL( aUrl );

    CleanupStack::Pop();

    return self;

    }

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

// CHttpCacheEntry::NewLC

// Two-phased constructor.

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

//

CHttpCacheEntry* CHttpCacheEntry::NewLC(

    const TDesC8& aUrl,

    CHttpCacheEvictionHandler& aEvictionHandler )

    {

    CHttpCacheEntry* self = CHttpCacheEntry::NewL( aUrl, aEvictionHandler );

    CleanupStack::PushL( self );

    return self;

    }

// Destructor

CHttpCacheEntry::~CHttpCacheEntry()

    {

  if( iVictim && iEvictionHandler)

    {

    iEvictionHandler->Remove( *this );

    }

    delete iUrl;

    delete iFileName;

    }

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

// CHttpCacheEntry::SetState

//

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

//

void CHttpCacheEntry::SetState(

    TCacheEntryState aState )

    {

    // add entry to the eviction table once it gets completed

    if( aState == ECacheComplete && !iVictim )

        {

        // don't add it twice

        iEvictionHandler->Insert( *this );

        iVictim = ETrue;

        }

    iState = aState;

    }

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

// CHttpCacheEntry::SetFileNameL

//

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

//

void CHttpCacheEntry::SetFileNameL(

    const TFileName& aFileName )

    {

    delete iFileName;

    iFileName = NULL;

    iFileName = aFileName.AllocL();

    }

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

// CHttpCacheEntry::Accessed

//

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

//

void CHttpCacheEntry::Accessed()

    {

    TTime now;

    now.HomeTime();

    iLastAccessed = now.Int64();

    iRef++;

    if( iVictim )

        {

        iEvictionHandler->Accessed( *this );

        }

#ifdef __CACHELOG__

    _LIT( KAccessFormat, "entry accessed: %d" );

    TBuf<100> buf;

    buf.Format( KAccessFormat, iRef );

    HttpCacheUtil::WriteUrlToLog( 0, buf, iUrl->Des() );

#endif // __CACHELOG__

    }

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

// CHttpCacheEntry::SetSize

//

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

//

void CHttpCacheEntry::SetSize(

    TUint aSize )

    {

    if( iSize && !aSize )

        {

        // body removal

        // remove itself from the eviction table.

        // this is no longer a victim

      if( iVictim )

        {

        iEvictionHandler->Remove( *this );

            iVictim = EFalse;

        }

        }

    iSize = aSize;

    }

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

// CHttpCacheEntry::SetProtected

//

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

//

void CHttpCacheEntry::SetProtected()

    {

    iProtected = ETrue;

    // iRef

    iRef = 50;

    HttpCacheUtil::WriteLog( 0, _L( "protected item" ) );

    }

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

// CHttpCacheEntry::Internalize

//

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

//

TInt CHttpCacheEntry::Internalize(

    RFileReadStream& aReadStream )

    {

    TRAPD( err,

     TInt len;

    // url length

    len = aReadStream.ReadInt32L();

    delete iUrl;

    iUrl=NULL;

    iUrl = HBufC8::NewL( len );

    TPtr8 ptr8( iUrl->Des() );

    // url

    aReadStream.ReadL( ptr8, len );

    // filename length

    len = aReadStream.ReadInt32L();

    HBufC* filename = HBufC::NewLC( len );

    TPtr ptr( filename->Des() );

    // url

    aReadStream.ReadL( ptr, len );

    //

    SetFileNameL( filename->Des() );

    //

    CleanupStack::PopAndDestroy(); // filename

    // la

    TReal64 la;

    la = aReadStream.ReadReal64L();

    iLastAccessed = la;

    // ref

    iRef = aReadStream.ReadUint32L();

    // size

    iSize = aReadStream.ReadUint32L( );

    // size

    iHeaderSize = aReadStream.ReadUint32L( );

    // protected

    iProtected = aReadStream.ReadInt32L();

    //

    SetState( ECacheComplete ); );

    return err;

    }

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

// CHttpCacheEntry::Externalize

//

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

//

TInt CHttpCacheEntry::Externalize(

    RFileWriteStream& aWriteStream )

    {

    TRAPD( err,

    // url length

    aWriteStream.WriteInt32L( iUrl->Length() );

    // url

    aWriteStream.WriteL( iUrl->Des() );

    // filename length

    aWriteStream.WriteInt32L( iFileName->Length() );

    // filename

    aWriteStream.WriteL( iFileName->Des() );

    // la

    aWriteStream.WriteReal64L( iLastAccessed );

    // ref

    aWriteStream.WriteUint32L( iRef );

    // size

    aWriteStream.WriteUint32L( iSize );

    // size

    aWriteStream.WriteUint32L( iHeaderSize );

    // protected

    aWriteStream.WriteInt32L( iProtected ); );

    return err;

    }

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

// CHttpCacheEntry::Accessed

//

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

//

void CHttpCacheEntry::Accessed(TInt64 aLastAccessed, TUint16 aRef)

    {

    iLastAccessed = aLastAccessed;

    iRef = aRef;

    if( iVictim )

        {

        iEvictionHandler->Accessed( *this );

        }

#ifdef __CACHELOG__

    _LIT( KAccessFormat, "entry accessed: %d" );

    TBuf<100> buf;

    buf.Format( KAccessFormat, iRef );

    HttpCacheUtil::WriteUrlToLog( 0, buf, iUrl->Des() );

#endif // __CACHELOG__

    }

//  End of File