os/mm/mmlibs/mmfw/src/Plugin/StdSourceAndSink/fileaccess.cpp
author sl@SLION-WIN7.fritz.box
Fri, 15 Jun 2012 03:10:57 +0200
changeset 0 bde4ae8d615e
permissions -rw-r--r--
First public contribution.
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// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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#include <f32file.h>
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#include <f32file64.h>
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#include <e32std.h>
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#include <caf/attribute.h>
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#include <caf/bitset.h>
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#include <caf/content.h>
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#include <caf/data.h>
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using namespace ContentAccess;
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#include <f32file.h>
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#include "FileAccess.h"
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CF32File::~CF32File()
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	{
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	if (!iFileHandle)
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		iFile.Close();
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	delete iFilePath;
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	}
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CF32File* CF32File::NewL(RFs& aSession, TDesC& aFilePath, TUint aMode) 
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	{
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	CF32File* self = new (ELeave) CF32File;
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	CleanupStack::PushL(self);
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	self->ConstructL(aSession, aFilePath, aMode);
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	CleanupStack::Pop(self);
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	return self;
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	}
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void CF32File::ConstructL(RFs& aSession, TDesC& aPath, TUint aFileMode)
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	{
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	iSession = &aSession;
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	iFilePath = aPath.AllocL();
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	TUint attributes = 0;
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	TInt err = iSession->Att(*iFilePath, attributes);
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	if (err == KErrNone)
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		{
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		if ( attributes & KEntryAttReadOnly )
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			User::LeaveIfError(iFile.Open(*iSession, *iFilePath, EFileShareReadersOnly )) ;
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		else //if ( !( attributes & KEntryAttReadOnly ) )
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			User::LeaveIfError(iFile.Open(*iSession, *iFilePath, aFileMode)) ;
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		}
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	else if ((err == KErrNotFound) && (aFileMode & EFileWrite))
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		{
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		User::LeaveIfError(iFile.Create(*iSession, *iFilePath, aFileMode )) ;
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		}
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	else
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		{
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		User::Leave(err);
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		}
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	}
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RFile& CF32File::FileL() 
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	{
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	return iFile;
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	}
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TInt CF32File::Data(CData*& /*aData*/)
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	{
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	return KErrNotSupported;
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	}
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TInt CF32File::Seek(TSeek aSeekMode, TInt aPos)
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	{
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	return iFile.Seek(aSeekMode, aPos);
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	}
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TInt CF32File::Read(TDes8& aDes,TInt aLength)
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	{
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	return iFile.Read(aDes, aLength);
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	}
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void CF32File::Read(TDes8& aDes, TInt aLength, TRequestStatus& aStatus)
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	{
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	iFile.Read(aDes, aLength, aStatus);
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	}
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TInt CF32File::Write(const TDesC8& aDes,TInt aLength)
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	{
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	return iFile.Write(aDes, aLength);
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	}
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void CF32File::Write(const TDesC8& aDes, TInt aLength, TRequestStatus& aStatus)
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	{
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	iFile.Write(aDes, aLength, aStatus);
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	}
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TInt CF32File::Size(TInt& aSize)
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	{
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	return iFile.Size(aSize);
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	}
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TInt CF32File::SetSize(TInt aSize)	
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	{
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	TInt err =  iFile.SetSize(aSize);
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	if(err == KErrNone)
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		iFileSize = aSize;
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	else
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		iFileSize = -1;
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	return err;
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	}
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TInt CF32File::EvaluateIntent(TIntent /*aIntent*/) const
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	{
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	return KErrNone;
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	}
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TInt CF32File::ExecuteIntent(TIntent /*aIntent*/)
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	{
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	return KErrNone;
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	}
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TBool CF32File::IsProtected() const
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	{
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	return EFalse;
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	}
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TInt CF32File::Read(TInt aPosition, TDes8& aDes, TInt aLength, TRequestStatus& aStatus)
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	{
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	iFile.Read(aPosition, aDes, aLength, aStatus);
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	return KErrNone;
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	}
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TInt CF32File::SetAgentProperty(TAgentProperty /*aProperty*/, TInt /*aValue*/)
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	{
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	// not an error to set this if not supported, just wont do anything
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	return KErrNone;
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	}
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CContentFile::~CContentFile()
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	{
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	delete iData;
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  iLegacyFile.Close();
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	iFile64.Close(); //For defect EASA-84ZC6J 
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	delete iFilePath;
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	}
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CContentFile* CContentFile::NewL(RFs& aSession, const TDesC& aFilePath, const TDesC& aUniqueId, TUint aMode, TBool aEnableUI) 
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	{
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	CContentFile* self = new (ELeave) CContentFile;
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	CleanupStack::PushL(self);
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	self->ConstructL(aSession, aFilePath, aUniqueId, aMode, aEnableUI);
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	CleanupStack::Pop(self);
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	return self;
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	}
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void CContentFile::ConstructL(RFs& aSession, const TDesC& aPath, const TDesC& aUniqueId, TUint /*aMode*/, TBool aEnableUI)
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	{
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	iSession = &aSession;
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	iFilePath = aPath.AllocL();
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	// Assume that we want the content to be shared and read-only.
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	if (aUniqueId.Length() > 0)
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		{
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		iData = CData::NewL(TVirtualPathPtr(*iFilePath, aUniqueId), EContentShareReadWrite);
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		}
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	else
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		{
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		iData = CData::NewL(TVirtualPathPtr(*iFilePath), EContentShareReadWrite);
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		}
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	TInt err = iData->SetProperty(EAgentPropertyAgentUI, aEnableUI);
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	if (err != KErrNone && err != KErrCANotSupported)
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		{
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		User::Leave(err);
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		}
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	User::LeaveIfError(iData->EvaluateIntent(EPeek));
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	}
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TInt CContentFile::EvaluateIntent(TIntent aIntent) const
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	{
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	ASSERT(iData);
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	return iData->EvaluateIntent(aIntent);
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	}
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TInt CContentFile::ExecuteIntent(TIntent aIntent)
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	{
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	ASSERT(iData);
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	return iData->ExecuteIntent(aIntent);
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	}
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TBool CContentFile::IsProtected() const
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	{
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	ASSERT(iData);
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	TInt value = 0;
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	TInt err =iData->GetAttribute(EIsProtected, value);
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	return (err == KErrNone && value);
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	}
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TInt CContentFile::SetAgentProperty(ContentAccess::TAgentProperty aProperty, TInt aValue)
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	{
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	ASSERT(iData);
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	return iData->SetProperty(aProperty, aValue);
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	}
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TInt CContentFile::Seek(TSeek aSeekMode, TInt aPos)
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	{
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	ASSERT(iData);
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	return iData->Seek(aSeekMode, aPos);
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	}
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TInt CContentFile::Read(TDes8& aDes,TInt aLength)
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	{
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	ASSERT(iData);
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	return iData->Read(aDes,aLength);
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	}
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void CContentFile::Read(TDes8& aDes, TInt aLength, TRequestStatus& aStatus)
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	{
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	ASSERT(iData);
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	iData->Read(aDes, aLength, aStatus);
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	}
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TInt CContentFile::Write(const TDesC8& /*aDes*/,TInt /*aLength*/)
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	{
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	return KErrAccessDenied;
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	}
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void CContentFile::Write(const TDesC8& /*aDes*/, TInt /*aLength*/, TRequestStatus& aStatus)
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	{
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	TRequestStatus* status = &aStatus;
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	User::RequestComplete(status, KErrAccessDenied);
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	}
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TInt CContentFile::SetSize(TInt /*aSize*/)
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	{
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	// Only a source is implemented, hence this cannot be allowed
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	return KErrAccessDenied;
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	}
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// Get the size of file
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// this method opens a new, read-only, RFile the first time this method is called
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TInt CContentFile::Size(TInt& aSize)
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	{
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	ASSERT(iData);
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	TRAPD(err, iData->DataSizeL(aSize));
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	return err;
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	}
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/**
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 * return a RFile for the legacy RFile method
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 * this method opens a new, read-only, RFile the first time this method is called
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 * @internalTechnology
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 * @return Reference to RFile handle to current file
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 */
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RFile& CContentFile::FileL() 
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	{
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	if (!iLegacyFileOpen)
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		{//For defect EASA-84ZC6J 
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  		TInt error = iLegacyFile.Open(*iSession, *iFilePath, EFileRead | EFileStream | EFileShareReadersOrWriters);
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		  if ( error == KErrTooBig )
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	        {
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	         User::LeaveIfError(iFile64.Open(*iSession, *iFilePath, EFileRead | EFileStream | EFileShareReadersOrWriters));
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	         iLegacyFileOpen = ETrue;
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	         return iFile64;
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	        }
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	    else if (error == KErrNone)
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	       {
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	       iLegacyFileOpen = ETrue;
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	       return iLegacyFile;
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	        }
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	    else 
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	        {
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	        User::Leave(error);
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	        }
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		}
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	if(iLegacyFile.SubSessionHandle())
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	    {
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	    return iLegacyFile;
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	    }
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	else
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	    {
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	    return iFile64;
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	    }
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}
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TInt CContentFile::Data(CData*& aData)
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	{
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	if (iData==NULL)
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		{
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		return KErrNotReady;
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		}
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	else
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		{
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		aData = iData;
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		return KErrNone;
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		}
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	}
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CF32File* CF32File::NewL(RFile& aFile) 
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	{
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	CF32File* self = new (ELeave) CF32File;
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	CleanupStack::PushL(self);
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	self->ConstructL(aFile);
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	CleanupStack::Pop(self);
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	return self;
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	}
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void CF32File::ConstructL(RFile& aFile)
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	{
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	iFile = aFile;
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	iFileHandle = ETrue;
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	}
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CContentFile* CContentFile::NewL(RFile& aFile, const TDesC& aUniqueId, TBool aEnableUI) 
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	{
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	CContentFile* self = new (ELeave) CContentFile;
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	CleanupStack::PushL(self);
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	self->ConstructL(aFile, aUniqueId, aEnableUI);
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	CleanupStack::Pop(self);
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	return self;
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	}
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void CContentFile::ConstructL(RFile& aFile, const TDesC& aUniqueId, TBool aEnableUI)
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	{
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	iData = CData::NewL(aFile, aUniqueId);
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	TInt err = iData->SetProperty(EAgentPropertyAgentUI, aEnableUI);
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	if (err != KErrNone && err != KErrCANotSupported)
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		{
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		User::Leave(err);
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		}
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	User::LeaveIfError(iData->EvaluateIntent(EPeek));
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	}
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TInt CContentFile::Read(TInt aPosition, TDes8& aDes, TInt aLength, TRequestStatus& aStatus)
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	{
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	return iData->Read(aPosition, aDes, aLength, aStatus);
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	}