1 /*

     2 * Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies). 

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  Templated attribute data helpers.

    15 *

    16 */

    17 

    18 

    19 // -----------------------------------------------------------------------------

    20 // DoSetDescL()

    21 // -----------------------------------------------------------------------------

    22 //

    23 template< class TBufType, class TDataType >

    24 inline void DoSetDescL( TBufType*& aPtr, const TDataType& aData )

    25     {

    26     TBufType* tmp = aData.AllocL();

    27     delete aPtr;

    28     aPtr = tmp;

    29     }

    30 

    31 

    32 

    33 // -----------------------------------------------------------------------------

    34 // DoGetDesc()

    35 // -----------------------------------------------------------------------------

    36 //

    37 template< class TBufType, class TPtrType >

    38 inline void DoGetDesc( const TBufType* const& aBuffer, TPtrType& aData )

    39     {

    40     if( aBuffer )

    41         {

    42         aData.Set( *aBuffer );

    43         }

    44     else

    45         {

    46         aData.Set( NULL, 0 );

    47         }

    48     }

    49 

    50 

    51 

    52 // -----------------------------------------------------------------------------

    53 // DoGetBufExtSize()

    54 // -----------------------------------------------------------------------------

    55 //

    56 template< class TBufType >

    57 inline TInt DoGetBufExtSize( const TBufType* const& aBuffer )

    58     {

    59     TInt size( 4 ); //Buffer length indicator: 4 bytes

    60 

    61     if( aBuffer && aBuffer->Length() != 0 )

    62         {

    63         size += aBuffer->Size();

    64         }

    65 

    66     return size;

    67     }

    68 

    69 

    70 // -----------------------------------------------------------------------------

    71 // DoExtrBufL()

    72 // -----------------------------------------------------------------------------

    73 //

    74 template< class TBufType >

    75 inline void DoExtrBufL( const TBufType* const& aBuffer, RWriteStream& aStream )

    76     {

    77     if( aBuffer && aBuffer->Length() != 0 )

    78         {

    79         aStream.WriteInt32L( aBuffer->Length() );

    80         aStream.WriteL( *aBuffer );

    81         }

    82     else

    83         {

    84         aStream.WriteInt32L( 0 );

    85         }

    86     }

    87 

    88 

    89 

    90 // -----------------------------------------------------------------------------

    91 // DoIntrBufL()

    92 // -----------------------------------------------------------------------------

    93 //

    94 template< class TBufType, class TPtrType >

    95 inline void DoIntrBufL( TBufType*& aBufPtr, TPtrType aPtr, RReadStream& aStream )

    96     {

    97     TBufType* buffer = NULL;

    98 

    99     TInt length = aStream.ReadInt32L();

   100     if( length != 0 )

   101         {

   102         buffer = TBufType::NewLC( length );

   103         aPtr.Set( buffer->Des() );

   104         aStream.ReadL( aPtr, length );

   105         CleanupStack::Pop(); //buffer

   106         }

   107 

   108     delete aBufPtr;

   109     aBufPtr = buffer;

   110     }

   111 

   112 

   113 //  End of File

   114