1 // Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

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

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #include <ezfilebuffer.h>

    17 #include <ezstream.h>

    18 

    19 _LIT(KFileBuffer,"FileBuffer");

    20 

    21 void CEZFileBufferManager::ConstructL(TInt aBufferSize)

    22 	{

    23 	__ASSERT_ALWAYS(aBufferSize > 0, User::Panic(KFileBuffer, EBadInitialization));

    24 

    25 	iBufferSize = aBufferSize;

    26 

    27 	iInputBuffer = new (ELeave) TUint8[iBufferSize];

    28 	iOutputBuffer = new (ELeave) TUint8[iBufferSize];

    29 

    30 	iInputDescriptor.Set(iInputBuffer,0,iBufferSize);

    31 	iOutputDescriptor.Set(iOutputBuffer,0,iBufferSize);

    32 	}

    33 

    34 CEZFileBufferManager::~CEZFileBufferManager()

    35 	{

    36 	delete[] iInputBuffer;

    37 	delete[] iOutputBuffer;

    38 	}

    39 

    40 CEZFileBufferManager::CEZFileBufferManager(RFile &aInput, RFile &aOutput) : 

    41 	iInputFile(aInput), iOutputFile(aOutput), iInputDescriptor(NULL,0), iOutputDescriptor(NULL,0)

    42 	{

    43 

    44 	}

    45 

    46 /**

    47 Creates a new CEZFileBufferManager object and leave it on the CleanupStack

    48 

    49 @param aInput the input file

    50 @param aOutput the output file

    51 @param aBufferSize the required size of the buffers

    52 @return the new CEZFileBufferManager object, on the CleanupStack

    53 */

    54 EXPORT_C CEZFileBufferManager* CEZFileBufferManager::NewLC(RFile &aInput, RFile &aOutput, TInt aBufferSize)

    55 	{

    56 	CEZFileBufferManager *fb = new (ELeave) CEZFileBufferManager(aInput,aOutput);

    57 	CleanupStack::PushL(fb);

    58 	fb->ConstructL(aBufferSize);

    59 	return fb;

    60 	}

    61 

    62 /**

    63 Creates a new CEZFileBufferManager object

    64 

    65 @param aInput the input file

    66 @param aOutput the output file

    67 @param aBufferSize the required size of the buffers

    68 @return the new CEZFileBufferManager object

    69 */

    70 EXPORT_C CEZFileBufferManager* CEZFileBufferManager::NewL(RFile &aInput, RFile &aOutput, TInt aBufferSize)

    71 	{

    72 	CEZFileBufferManager *fb = new (ELeave) CEZFileBufferManager(aInput,aOutput);

    73 	CleanupStack::PushL(fb);

    74 	fb->ConstructL(aBufferSize);

    75 	CleanupStack::Pop();

    76 	return fb;

    77 	}

    78 

    79 

    80 void CEZFileBufferManager::InitializeL(CEZZStream &aZStream)

    81 	{

    82 	User::LeaveIfError(iInputFile.Read(iInputDescriptor));

    83 	aZStream.SetInput(iInputDescriptor);

    84 	aZStream.SetOutput(iOutputDescriptor);

    85 	}

    86 

    87 void CEZFileBufferManager::NeedInputL(CEZZStream &aZStream)

    88 	{

    89 	User::LeaveIfError(iInputFile.Read(iInputDescriptor));

    90 	aZStream.SetInput(iInputDescriptor);

    91 	}

    92 

    93 void CEZFileBufferManager::NeedOutputL(CEZZStream &aZStream)

    94 	{

    95 	TPtrC8 od = aZStream.OutputDescriptor();

    96 	User::LeaveIfError(iOutputFile.Write(od));

    97 	aZStream.SetOutput(iOutputDescriptor);

    98 	}

    99 

   100 void CEZFileBufferManager::FinalizeL(CEZZStream &aZStream)

   101 	{

   102 	TPtrC8 od = aZStream.OutputDescriptor();

   103 	User::LeaveIfError(iOutputFile.Write(od));

   104 	}