1 /*

     2 * Copyright (c) 2006-2006 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:  CFServiceUtils methods.

    15 *

    16 */

    17 

    18 

    19 #include <s32strm.h>

    20 

    21 #include "cfserviceutils.h"

    22 #include "cftrace.h"

    23 

    24 // CONSTANTS

    25 

    26 #ifdef _DEBUG

    27 // Panic category

    28 _LIT( KPanicCat, "CFSERVUTIL" );

    29 

    30 // Panic codes

    31 enum TPanicReason

    32     {

    33     ENullPointer

    34     };

    35     

    36 LOCAL_C void Panic( TInt aCode )

    37     {

    38     User::Panic( KPanicCat, aCode );

    39     }

    40 #endif

    41 

    42 //-----------------------------------------------------------------------------

    43 // CFServiceUtils::UpdateBufferL

    44 //-----------------------------------------------------------------------------

    45 //

    46 void CFServiceUtils::UpdateBufferL( HBufC*& aBuffer,

    47     const TDesC& aNewData )

    48     {

    49     FUNC_LOG;

    50     

    51     __ASSERT_DEBUG( aBuffer, Panic( ENullPointer ) );

    52     

    53     TPtr bufferPtr = aBuffer->Des();

    54     if( aNewData.Length() < bufferPtr.MaxLength() )

    55         {

    56         // Just copy data

    57         bufferPtr.Copy( aNewData );

    58         }

    59     else

    60         {

    61         // need to increase buffer and copy

    62         delete aBuffer;

    63         aBuffer = NULL;

    64         aBuffer = aNewData.AllocL();

    65         }

    66     }

    67 

    68 //-----------------------------------------------------------------------------

    69 // CFServiceUtils::WriteIntoStreamL

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

    71 //

    72 void CFServiceUtils::WriteIntoStreamL( const HBufC* const aBuf,

    73     RWriteStream& aStream )

    74     {

    75     FUNC_LOG;

    76 

    77     TPtrC bufPtrC( KNullDesC );

    78     if( aBuf )

    79         {

    80         bufPtrC.Set( *aBuf );

    81         }

    82     TInt length = bufPtrC.Length();

    83     aStream.WriteInt16L( length );

    84     if( length > 0 )

    85         {

    86         aStream.WriteL( bufPtrC, length );

    87         }

    88     }

    89 

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

    91 // CFServiceUtils::ReadFromStreamL

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

    93 //

    94 void CFServiceUtils::ReadFromStreamL( HBufC*& aBuffer,

    95     RReadStream& aStream )

    96     {

    97     FUNC_LOG;

    98     

    99     TInt length = aStream.ReadInt16L();

   100     if( length > 0 )

   101         {

   102         // Create new temporary buffer

   103         HBufC* buffer = HBufC::NewLC( length );

   104         

   105         // Read data

   106         TPtr valuePtr = buffer->Des();

   107         aStream.ReadL( valuePtr, length );

   108         CleanupStack::Pop( buffer );

   109 

   110         // Update buffer

   111         delete aBuffer;

   112         aBuffer = NULL;

   113         aBuffer = buffer;

   114         }

   115     }