mtpdataproviders/mtpimagedp/src/cmtpimagedpcopyobject.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 01:11:40 +0200
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// Copyright (c) 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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/**
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 @file
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 @internalTechnology
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*/
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#include <f32file.h>
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#include <bautils.h>
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#include <pathinfo.h> // PathInfo
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#include <sysutil.h>
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#include <mtp/mmtpdataproviderframework.h>
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#include <mtp/mmtpobjectmgr.h>
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#include <mtp/mmtpstoragemgr.h>
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#include <mtp/cmtpobjectmetadata.h>
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#include <mtp/cmtptypearray.h>
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#include <mtp/cmtptypestring.h>
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#include "cmtpimagedpcopyobject.h"
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#include "mtpimagedppanic.h"
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#include "mtpimagedputilits.h"
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#include "cmtpimagedp.h"
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__FLOG_STMT(_LIT8(KComponent,"CopyObject");)
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const TInt RollbackFuncCnt = 1;
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/**
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Verification data for the CopyObject request
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*/
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const TMTPRequestElementInfo KMTPCopyObjectPolicy[] = 
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    {
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        {TMTPTypeRequest::ERequestParameter2, EMTPElementTypeStorageId, EMTPElementAttrWrite, 0, 0, 0},
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        {TMTPTypeRequest::ERequestParameter3, EMTPElementTypeObjectHandle, EMTPElementAttrDir | EMTPElementAttrWrite, 1, 0, 0}
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    };
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/**
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Two-phase construction method
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@param aPlugin	The data provider plugin
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@param aFramework	The data provider framework
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@param aConnection	The connection from which the request comes
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@return a pointer to the created request processor object
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*/     
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MMTPRequestProcessor* CMTPImageDpCopyObject::NewL(MMTPDataProviderFramework& aFramework, MMTPConnection& aConnection,CMTPImageDataProvider& aDataProvider)
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    {
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    CMTPImageDpCopyObject* self = new (ELeave) CMTPImageDpCopyObject(aFramework, aConnection,aDataProvider);
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    CleanupStack::PushL(self);
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    self->ConstructL();
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    CleanupStack::Pop(self);
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    return self;
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    }
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/**
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Destructor
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*/	
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CMTPImageDpCopyObject::~CMTPImageDpCopyObject()
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    {	
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    __FLOG(_L8(">> CMTPImageDpCopyObject::~CMTPImageDpCopyObject"));
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    delete iDest;
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    delete iFileMan;
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    delete iSrcObjectInfo;
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    delete iTargetObjectInfo;
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    iRollbackActionL.Close();
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    __FLOG(_L8("<< CMTPImageDpCopyObject::~CMTPImageDpCopyObject"));
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    __FLOG_CLOSE;
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    }
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/**
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Standard c++ constructor
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*/	
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CMTPImageDpCopyObject::CMTPImageDpCopyObject(MMTPDataProviderFramework& aFramework, MMTPConnection& aConnection,CMTPImageDataProvider& aDataProvider) :
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    CMTPRequestProcessor(aFramework, aConnection, sizeof(KMTPCopyObjectPolicy)/sizeof(TMTPRequestElementInfo), KMTPCopyObjectPolicy),
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    iDataProvider(aDataProvider)
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    {
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    __FLOG_OPEN(KMTPSubsystem, KComponent);
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    }
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/**
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Second phase constructor
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*/
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void CMTPImageDpCopyObject::ConstructL()
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    {
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    __FLOG(_L8(">> CMTPImageDpCopyObject::ConstructL"));
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    iFileMan = CFileMan::NewL(iFramework.Fs());
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    iSrcObjectInfo = CMTPObjectMetaData::NewL();
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    iRollbackActionL.ReserveL(RollbackFuncCnt);
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    __FLOG(_L8("<< CMTPImageDpCopyObject::ConstructL"));
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    }
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TMTPResponseCode CMTPImageDpCopyObject::CheckRequestL()
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    {
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    __FLOG(_L8(">> CMTPImageDpCopyObject::CheckRequestL"));
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    TMTPResponseCode responseCode = CMTPRequestProcessor::CheckRequestL();
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    if (EMTPRespCodeOK == responseCode)
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        {
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   111
        TUint32 objectHandle = Request().Uint32(TMTPTypeRequest::ERequestParameter1);
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        // Check whether object handle is valid
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        responseCode = MTPImageDpUtilits::VerifyObjectHandleL(iFramework, objectHandle, *iSrcObjectInfo);
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        }
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    else if(EMTPRespCodeInvalidObjectHandle == responseCode) //we only check the parent handle
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        {
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        responseCode = EMTPRespCodeInvalidParentObject;
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        }
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   119
    
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    __FLOG_VA((_L8("CheckRequestL - Exit with responseCode = 0x%04X"), responseCode));
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    __FLOG(_L8("<< CMTPImageDpCopyObject::CheckRequestL"));
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    return responseCode;
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   123
    }
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   124
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   125
/**
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CopyObject request handler
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*/      
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void CMTPImageDpCopyObject::ServiceL()
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    {   
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    __FLOG(_L8(">> CMTPImageDpCopyObject::ServiceL"));
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    TUint32 handle = KMTPHandleNone;
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    TMTPResponseCode responseCode = CopyObjectL(handle);
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    if(responseCode == EMTPRespCodeOK)
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        {
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        SendResponseL(EMTPRespCodeOK, 1, &handle);
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   136
        }
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    else
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        {
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        SendResponseL(responseCode);
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   140
        }
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    __FLOG(_L8("<< CMTPImageDpCopyObject::ServiceL"));
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    }
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   143
    
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/**
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Copy object operation
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@return the object handle of the resulting object.
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   147
*/
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TMTPResponseCode CMTPImageDpCopyObject::CopyObjectL(TUint32& aNewHandle)
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    {
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    __FLOG(_L8(">> CMTPImageDpCopyObject::CopyObjectL"));
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    TMTPResponseCode responseCode = EMTPRespCodeOK;
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    aNewHandle = KMTPHandleNone;
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    GetParametersL();
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    iNewFileName.Append(*iDest);
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    const TDesC& oldFileName = iSrcObjectInfo->DesC(CMTPObjectMetaData::ESuid);
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    TParsePtrC fileNameParser(oldFileName);
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   159
    
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    if((iNewFileName.Length() + fileNameParser.NameAndExt().Length()) <= iNewFileName.MaxLength())
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        {
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        iNewFileName.Append(fileNameParser.NameAndExt());
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        responseCode = CanCopyObjectL(oldFileName, iNewFileName);	
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   164
        }
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   165
    else
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   166
        {
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        responseCode = EMTPRespCodeGeneralError;
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   168
        }
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   169
        
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   170
    
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   171
    if(responseCode == EMTPRespCodeOK)
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   172
        {
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        aNewHandle = CopyFileL(oldFileName, iNewFileName);
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   174
        }
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    __FLOG(_L8("<< CMTPImageDpCopyObject::CopyObjectL"));
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    return responseCode;
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   177
    }
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   178
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   179
/**
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A helper function of CopyObjectL.
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   181
@param aNewFileName the new full filename after copy.
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@return objectHandle of new copy of object.
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   183
*/
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   184
TUint32 CMTPImageDpCopyObject::CopyFileL(const TDesC& aOldFileName, const TDesC& aNewFileName)
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    {
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   186
    __FLOG(_L8(">> CMTPImageDpCopyObject::CopyFileL"));
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   187
    TCleanupItem anItem(FailRecover, reinterpret_cast<TAny*>(this));
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    CleanupStack::PushL(anItem);
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   189
    
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    GetPreviousPropertiesL(aOldFileName);
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   191
    User::LeaveIfError(iFileMan->Copy(aOldFileName, *iDest));
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   192
    iRollbackActionL.Append(RollBackFromFsL);
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   193
    SetPreviousPropertiesL(aNewFileName);
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   194
    
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   195
    iFramework.ObjectMgr().InsertObjectL(*iTargetObjectInfo);
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   196
    __FLOG(_L8("<< CMTPImageDpCopyObject::CopyFileL"));
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   197
    CleanupStack::Pop(this);
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   198
    return iTargetObjectInfo->Uint(CMTPObjectMetaData::EHandle);
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   199
    }
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   200
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   201
/**
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   202
Retrieve the parameters of the request
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   203
*/	
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   204
void CMTPImageDpCopyObject::GetParametersL()
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   205
    {
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   206
    __FLOG(_L8(">> CMTPImageDpCopyObject::GetParametersL"));
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   207
    __ASSERT_DEBUG(iRequestChecker, Panic(EMTPImageDpRequestCheckNull));
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   208
    
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   209
    TUint32 objectHandle  = Request().Uint32(TMTPTypeRequest::ERequestParameter1);
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    iStorageId = Request().Uint32(TMTPTypeRequest::ERequestParameter2);
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   211
    TUint32 parentObjectHandle  = Request().Uint32(TMTPTypeRequest::ERequestParameter3);       
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   212
    
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    if(parentObjectHandle == 0)
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   214
        {
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        SetDefaultParentObjectL();
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   216
        }
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   217
    else	
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   218
        {
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   219
        CMTPObjectMetaData* parentObjectInfo = iRequestChecker->GetObjectInfo(parentObjectHandle);
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        __ASSERT_DEBUG(parentObjectInfo, Panic(EMTPImageDpObjectNull));
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   221
        delete iDest;
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        iDest = NULL;
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        iDest = parentObjectInfo->DesC(CMTPObjectMetaData::ESuid).AllocL();        
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        iNewParentHandle = parentObjectHandle;
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        }
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    __FLOG(_L8("<< CMTPImageDpCopyObject::GetParametersL"));	
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    }
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/**
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Get a default parent object, ff the request does not specify a parent object, 
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*/
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void CMTPImageDpCopyObject::SetDefaultParentObjectL()
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    {
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    __FLOG(_L8(">> CMTPImageDpCopyObject::SetDefaultParentObjectL"));
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    TDriveNumber drive(static_cast<TDriveNumber>(iFramework.StorageMgr().DriveNumber(iStorageId)));
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    User::LeaveIfError(drive);
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    TChar driveLetter;
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    iFramework.Fs().DriveToChar(drive, driveLetter);
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    TFileName driveBuf;
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    driveBuf.Append(driveLetter);
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    driveBuf = BaflUtils::RootFolderPath(driveBuf.Left(1));
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    delete iDest;
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    iDest = NULL;
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    iDest = driveBuf.AllocL();
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    iNewParentHandle = KMTPHandleNoParent;
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    __FLOG(_L8("<< CMTPImageDpCopyObject::SetDefaultParentObjectL"));
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    }
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/**
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Check if we can copy the file to the new location
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*/
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TMTPResponseCode CMTPImageDpCopyObject::CanCopyObjectL(const TDesC& aOldName, const TDesC& aNewName) const
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    {
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    __FLOG(_L8(">> CMTPImageDpCopyObject::CanCopyObjectL"));
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    TMTPResponseCode result = EMTPRespCodeOK;
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    TEntry fileEntry;
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    User::LeaveIfError(iFramework.Fs().Entry(aOldName, fileEntry));
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    TDriveNumber drive(static_cast<TDriveNumber>(iFramework.StorageMgr().DriveNumber(iStorageId)));
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    User::LeaveIfError(drive);
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    TVolumeInfo volumeInfo;
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    User::LeaveIfError(iFramework.Fs().Volume(volumeInfo, drive));
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    if(volumeInfo.iFree < fileEntry.iSize)
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        {
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        result = EMTPRespCodeStoreFull;
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        }
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    else if (BaflUtils::FileExists(iFramework.Fs(), aNewName))			
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        {
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        result = EMTPRespCodeInvalidParentObject;
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        }
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    __FLOG_VA((_L8("CanCopyObjectL - Exit with response code 0x%04X"), result));
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    __FLOG(_L8("<< CMTPImageDpCopyObject::CanCopyObjectL"));  	
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    return result;	
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    }
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/**
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Save the object properties before doing the copy
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*/
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void CMTPImageDpCopyObject::GetPreviousPropertiesL(const TDesC& aOldFileName)
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    {
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    __FLOG(_L8("GetPreviousPropertiesL - Entry"));
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    User::LeaveIfError(iFramework.Fs().Modified(aOldFileName, iDateModified));
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    __FLOG(_L8("GetPreviousPropertiesL - Exit"));
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    }
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/**
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   288
Set the object properties after doing the copy
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*/
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   290
void CMTPImageDpCopyObject::SetPreviousPropertiesL(const TDesC& aNewFileName)
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   291
    {
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   292
    __FLOG(_L8("SetPreviousPropertiesL - Entry"));        
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    User::LeaveIfError(iFramework.Fs().SetModified(aNewFileName, iDateModified));
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    iTargetObjectInfo = CMTPObjectMetaData::NewL();
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    iTargetObjectInfo->SetUint(CMTPObjectMetaData::EDataProviderId, iSrcObjectInfo->Uint(CMTPObjectMetaData::EDataProviderId));
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   297
    iTargetObjectInfo->SetUint(CMTPObjectMetaData::EFormatCode, iSrcObjectInfo->Uint(CMTPObjectMetaData::EFormatCode));
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    iTargetObjectInfo->SetDesCL(CMTPObjectMetaData::EName, iSrcObjectInfo->DesC(CMTPObjectMetaData::EName));
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   299
    iTargetObjectInfo->SetUint(CMTPObjectMetaData::ENonConsumable, iSrcObjectInfo->Uint(CMTPObjectMetaData::ENonConsumable));
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    iTargetObjectInfo->SetUint(CMTPObjectMetaData::EParentHandle, iNewParentHandle);
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   301
    iTargetObjectInfo->SetUint(CMTPObjectMetaData::EStorageId, iStorageId);
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    iTargetObjectInfo->SetDesCL(CMTPObjectMetaData::ESuid, aNewFileName);
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    __FLOG(_L8("SetPreviousPropertiesL - Exit"));
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    }
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   305
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void CMTPImageDpCopyObject::FailRecover(TAny* aCopyOperation)
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   307
    {
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   308
    reinterpret_cast<CMTPImageDpCopyObject*>(aCopyOperation)->RollBack();
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   309
    }
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   310
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   311
void CMTPImageDpCopyObject::RollBack()
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   312
    {
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   313
    TInt i = iRollbackActionL.Count();
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   314
    while(-- i >= 0)
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   315
        {
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   316
        TRAP_IGNORE((*iRollbackActionL[i])(this));
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   317
        }
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   318
    iRollbackActionL.Reset();
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   319
    }
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diff changeset
   320
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   321
void CMTPImageDpCopyObject::RollBackFromFsL()
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   322
    {
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   323
    User::LeaveIfError(iFramework.Fs().Delete(iNewFileName));
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   324
    }
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diff changeset
   325
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   326
void CMTPImageDpCopyObject::RollBackFromFsL(CMTPImageDpCopyObject* aObject)
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    {
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    aObject->RollBackFromFsL();
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   329
    }
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   330
d0791faffa3f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   331
// End of file
d0791faffa3f Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   332