1 /*

     2 * Copyright (c) 2006-2009 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: 

    15 *

    16 */

    17 

    18 

    19 #include "TMSTD.H"

    20 

    21 CTmBufferBase::~CTmBufferBase()

    22 	{

    23 	User::Free(iData);

    24 	}

    25 

    26 void CTmBufferBase::Truncate(TInt aLength)

    27 	{

    28 	if (aLength > iLength || aLength < 0)

    29 		TmPanic(EBadTruncationLength);

    30 	iLength = aLength;

    31 	}

    32 

    33 TAny* CTmBufferBase::ExtendL(TInt aSizeOfData)

    34 	{

    35 	if (iLength == iAllocated)

    36 		GrowL(iExpandSize,aSizeOfData);

    37 	TInt offset = iLength * aSizeOfData;

    38 	iLength += 1;

    39 	return REINTERPRET_CAST(TUint8*,iData) + offset;

    40 	}

    41 

    42 void CTmBufferBase::DoAppendL(const TAny* aItem,TInt aCount,TInt aSizeOfData)

    43 	{

    44 	int deficit = iLength + aCount - iAllocated;

    45 	if (deficit > 0)

    46 		{

    47 		int n = deficit % iExpandSize;

    48 		if (n)

    49 			deficit += iExpandSize - n;

    50 		GrowL(deficit,aSizeOfData);

    51 		}

    52 	Mem::Copy(REINTERPRET_CAST(TUint8*,iData) + iLength * aSizeOfData, aItem,

    53 		aCount * aSizeOfData);

    54 	iLength += aCount;

    55 	}

    56 

    57 void CTmBufferBase::GrowL(TInt aExtra,TInt aSizeOfData)

    58 	{

    59 	iData = User::ReAllocL(iData,(iAllocated + aExtra) * aSizeOfData);

    60 	iAllocated += aExtra;

    61 	}