C++ TEntry::FileSize方法代码示例

/**
Check if we can copy the file to the new location
*/
TMTPResponseCode CMTPImageDpCopyObject::CanCopyObjectL(const TDesC& aOldName, const TDesC& aNewName) const
    {
    OstTraceFunctionEntry0( CMTPIMAGEDPCOPYOBJECT_CANCOPYOBJECTL_ENTRY );
    TMTPResponseCode result = EMTPRespCodeOK;
    
    TEntry fileEntry;
    LEAVEIFERROR(iFramework.Fs().Entry(aOldName, fileEntry),
            OstTraceExt2( TRACE_ERROR, DUP1_CMTPIMAGEDPCOPYOBJECT_CANCOPYOBJECTL, 
                    "Gets the entry details for %S failed! error code %d", aOldName, munged_err ));
    TDriveNumber drive(static_cast<TDriveNumber>(iFramework.StorageMgr().DriveNumber(iStorageId)));
    LEAVEIFERROR(drive,
            OstTraceExt2( TRACE_ERROR, DUP2_CMTPIMAGEDPCOPYOBJECT_CANCOPYOBJECTL, 
                    "Gets drive for storage %d failed! error code %d", iStorageId, munged_err ));
    TVolumeInfo volumeInfo;
    LEAVEIFERROR(iFramework.Fs().Volume(volumeInfo, drive),
            OstTraceExt2( TRACE_ERROR, DUP3_CMTPIMAGEDPCOPYOBJECT_CANCOPYOBJECTL, 
                    "Gets volume information for driver %d failed! error code %d", drive, munged_err ));            
    
    if(volumeInfo.iFree < fileEntry.FileSize())
        {
        result = EMTPRespCodeStoreFull;
        }
    else if (BaflUtils::FileExists(iFramework.Fs(), aNewName))			
        {
        result = EMTPRespCodeInvalidParentObject;
        }
	OstTrace1( TRACE_NORMAL, CMTPIMAGEDPCOPYOBJECT_CANCOPYOBJECTL, 
	        "CanCopyObjectL - Exit with response code 0x%04X", result );
    OstTraceFunctionExit0( CMTPIMAGEDPCOPYOBJECT_CANCOPYOBJECTL_EXIT );
    return result;	
    }

void QFileSystemMetaData::fillFromTEntry(const TEntry& entry)
{
    entryFlags &= ~(QFileSystemMetaData::SymbianTEntryFlags);
    knownFlagsMask |= QFileSystemMetaData::SymbianTEntryFlags;
    //Symbian doesn't have unix type file permissions
    entryFlags |= QFileSystemMetaData::ReadPermissions;
    if(!entry.IsReadOnly()) {
        entryFlags |= QFileSystemMetaData::WritePermissions;
    }
    //set the type
    if(entry.IsDir())
        entryFlags |= (QFileSystemMetaData::DirectoryType | QFileSystemMetaData::ExecutePermissions);
    else
        entryFlags |= QFileSystemMetaData::FileType;

    //set the attributes
    entryFlags |= QFileSystemMetaData::ExistsAttribute;
    if(entry.IsHidden())
        entryFlags |= QFileSystemMetaData::HiddenAttribute;

#ifdef SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API
    size_ = entry.FileSize();
#else
    size_ = (TUint)(entry.iSize);
#endif

    modificationTime_ = entry.iModified;
}

/**
Check if we can move the file to the new location
*/
TMTPResponseCode CMTPMoveObject::CanMoveObjectL(const TDesC& aOldName, const TDesC& aNewName) const
{
    OstTraceFunctionEntry0( CMTPMOVEOBJECT_CANMOVEOBJECTL_ENTRY );
    TMTPResponseCode result = EMTPRespCodeOK;

    TEntry fileEntry;
    LEAVEIFERROR(iFramework.Fs().Entry(aOldName, fileEntry),
                 OstTraceExt1( TRACE_ERROR, DUP1_CMTPMOVEOBJECT_CANMOVEOBJECTL, "can't get entry details from %S", aOldName));
    TInt drive(iFramework.StorageMgr().DriveNumber(iStorageId));
    LEAVEIFERROR(drive,
                 OstTrace1( TRACE_ERROR, DUP2_CMTPMOVEOBJECT_CANMOVEOBJECTL, "can't get driver number for storage %d", iStorageId));
    TVolumeInfo volumeInfo;
    LEAVEIFERROR(iFramework.Fs().Volume(volumeInfo, drive),
                 OstTrace1( TRACE_ERROR, DUP3_CMTPMOVEOBJECT_CANMOVEOBJECTL, "can't get volume info for drive %d", drive));

#ifdef SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API
    if(volumeInfo.iFree < fileEntry.FileSize())
#else
    if(volumeInfo.iFree < fileEntry.iSize)
#endif
    {
        result = EMTPRespCodeStoreFull;
    }
    else if (BaflUtils::FileExists(iFramework.Fs(), aNewName))
    {
        result = EMTPRespCodeInvalidParentObject;
    }
    OstTraceFunctionExit0( CMTPMOVEOBJECT_CANMOVEOBJECTL_EXIT );
    OstTrace1( TRACE_NORMAL, CMTPMOVEOBJECT_CANMOVEOBJECTL, "response code 0x%04X", result );
    return result;
}

// -----------------------------------------------------------------------------
// CGetPartialObject::VerifyParametersL
// Verify if the parameter of the request (i.e. offset) is good.
// -----------------------------------------------------------------------------
//
TBool CGetPartialObject::VerifyParametersL()
    {
    PRINT( _L( "MM MTP => CGetPartialObject::VerifyParametersL" ) );

    __ASSERT_DEBUG( iRequestChecker, Panic( EMmMTPDpRequestCheckNull ) );
    TBool result = EFalse;
    iObjectHandle = Request().Uint32( TMTPTypeRequest::ERequestParameter1 );
    iOffset = Request().Uint32( TMTPTypeRequest::ERequestParameter2 );
    iPartialDataLength = Request().Uint32( TMTPTypeRequest::ERequestParameter3 );

    PRINT3( _L( "MM MTP <> CGetPartialObject::VerifyParametersL iObjectHandle = 0x%x, iOffset = 0x%x, iMaxLength = 0x%x " ),
        iObjectHandle,
        iOffset,
        iPartialDataLength );

    //get object info, but do not have the ownship of the object
    CMTPObjectMetaData* objectInfo = iRequestChecker->GetObjectInfo( iObjectHandle );
    __ASSERT_DEBUG( objectInfo, Panic( EMmMTPDpObjectNull ) );

    const TDesC& suid( objectInfo->DesC( CMTPObjectMetaData::ESuid ) );
    PRINT1( _L( "MM MTP <> CGetPartialObject::VerifyParametersL suid = %S" ), &suid );

    TEntry fileEntry;
    User::LeaveIfError( iFramework.Fs().Entry( suid, fileEntry ) );
    if ( iOffset < fileEntry.FileSize() )
        {
        result = ETrue;
        }

    PRINT1( _L( "MM MTP <= CGetPartialObject::VerifyParametersL result = %d" ), result );
    return result;
    }

// -----------------------------------------------------------------------------
// CMoveObject::CanMoveObjectL
// Check if we can move the file to the new location
// -----------------------------------------------------------------------------
//
TMTPResponseCode CMoveObject::CanMoveObjectL( const TDesC& aOldName,
    const TDesC& aNewName ) const
    {
    PRINT2( _L( "MM MTP => CMoveObject::CanMoveObjectL aOldName = %S, aNewName = %S" ),
        &aOldName,
        &aNewName );
    TMTPResponseCode result = EMTPRespCodeOK;

    TEntry fileEntry;
    User::LeaveIfError( iFramework.Fs().Entry( aOldName, fileEntry ) );
    TInt drive = iFramework.StorageMgr().DriveNumber( iStorageId );
    User::LeaveIfError( drive );
    TVolumeInfo volumeInfo;
    User::LeaveIfError( iFramework.Fs().Volume( volumeInfo, drive ) );

    if ( volumeInfo.iFree < fileEntry.FileSize() )
        {
        result = EMTPRespCodeStoreFull;
        }
    else if ( BaflUtils::FileExists( iFramework.Fs(), aNewName ) )
        {
#ifdef MMMTPDP_REPLACE_EXIST_FILE
        // delete the old one and replace
        TInt delErr = iFramework.Fs().Delete( aNewName );
        PRINT1( _L( "MM MTP <> CMoveObject::CanMoveObjectL delErr = %d" ), delErr );
        // delete from the metadata DB
        TRAPD( err, iFramework.ObjectMgr().RemoveObjectL( aNewName ) );
        PRINT1( _L( "MM MTP <> CMoveObject::CanMoveObjectL err = %d" ), err );
        // delete from video/mpx DB
        CMTPObjectMetaData* objectInfo = CMTPObjectMetaData::NewLC(); // + objectInfo
        if ( iFramework.ObjectMgr().ObjectL( aNewName, *objectInfo ) )
            {
            TRAP( err, iDpConfig.GetWrapperL().DeleteObjectL( aNewName,
                objectInfo->Uint( CMTPObjectMetaData::EFormatCode ) ) );
            }
        CleanupStack::PopAndDestroy( objectInfo ); // - objectInfo
        if ( err )
            {
            // do nothing
            }
#else
        result = EMTPRespCodeInvalidParentObject;
#endif
        }

    PRINT1( _L( "MM MTP <= CMoveObject::CanMoveObjectL result = 0x%x" ), result );
    return result;
    }

/**
Check the GetPartialObject reqeust
@return EMTPRespCodeOK if the request is good, otherwise, one of the error response codes
*/  
TMTPResponseCode CMTPGetPartialObject::CheckRequestL()
    {
    OstTraceFunctionEntry0( CMTPGETPARTIALOBJECT_CHECKREQUESTL_ENTRY );
    TMTPResponseCode result = CMTPRequestProcessor::CheckRequestL();
    if(result == EMTPRespCodeOK)
        {
        TUint32 objectHandle = Request().Uint32(TMTPTypeRequest::ERequestParameter1);
        iOffset = Request().Uint32(TMTPTypeRequest::ERequestParameter2);
        iLength = Request().Uint32(TMTPTypeRequest::ERequestParameter3);
        
        //does not take ownership
        iObjectInfo = iRequestChecker->GetObjectInfo(objectHandle);
        if (!iObjectInfo)
            {
            // The object handle has already been checked, so an invalid handle can
            // only occur if it was invalidated during a context switch between
            // the validation time and now.
            result = EMTPRespCodeInvalidObjectHandle;
            }
        else
            {
            TEntry fileEntry;
            LEAVEIFERROR(iFramework.Fs().Entry(iObjectInfo->DesC(CMTPObjectMetaData::ESuid), fileEntry),
                    OstTraceExt1(TRACE_ERROR, CMTPGETPARTIALOBJECT_CHECKREQUESTL, 
                            "can't get entry details for %S!", iObjectInfo->DesC(CMTPObjectMetaData::ESuid)));

            if((iOffset >= fileEntry.FileSize())) 
                {
                result = EMTPRespCodeInvalidParameter;
                }
            }
        }

    OstTraceFunctionExit0( CMTPGETPARTIALOBJECT_CHECKREQUESTL_EXIT );
    return result;  
    }

// -----------------------------------------------------------------------------
// CSendObject::DoHandleResponsePhaseObjectL
// SendObject
// -----------------------------------------------------------------------------
//
TBool CSendObject::DoHandleResponsePhaseObjectL()
    {
    PRINT( _L( "MM MTP => CSendObject::DoHandleResponsePhaseObjectL" ) );

    TBool result = ETrue;

    TEntry fileEntry;
    User::LeaveIfError( iFs.Entry( iFullPath, fileEntry ) );
    if ( fileEntry.FileSize() != iObjectSize )
        {
        iFs.Delete( iFullPath );
        iObjectMgr.UnreserveObjectHandleL( *iReceivedObjectInfo );
        TMTPResponseCode responseCode = EMTPRespCodeObjectTooLarge;
        if ( fileEntry.FileSize() < iObjectSize )
            {
            responseCode = EMTPRespCodeIncompleteTransfer;
            }
        SendResponseL( responseCode );
        Rollback();
        result = EFalse;
        }

    // SendObject is cancelled or connection is dropped.
    if ( result && iCancelled )
        {
        iFramework.RouteRequestUnregisterL( iExpectedSendObjectRequest,
            iConnection );
        SendResponseL( EMTPRespCodeTransactionCancelled );
        Rollback();
        }
    else if ( result && !iCancelled )
        {
        if ( iObjectSize > 0 ) // media file
            {
            TRAPD( err, AddMediaToStoreL() );
            PRINT1( _L( "MM MTP <= CSendObject::DoHandleResponsePhaseObjectL err = %d" ), err );

            if ( ( iPreviousOperation == EMTPOpCodeSendObjectPropList )
                && ( err == KErrNone ) )
                {
                // Only leave when getting proplist element from data received by fw.
                // It should not happen after ReceiveDataL in which construction of proplist already succeed.
                SetObjectPropListL();
                }

            // Commits into MTP data object enumeration store the object handle and
            // storage space previously reserved for the specified object.
            iFramework.ObjectMgr().CommitReservedObjectHandleL( *iReceivedObjectInfo );
            iRollbackList.Append( &CSendObject::RemoveObjectFromDbL );
            }

        // Commit object to MTP data store
        iFramework.RouteRequestUnregisterL( iExpectedSendObjectRequest,
            iConnection );

        SendResponseL( EMTPRespCodeOK );
        }

    iCancelled = EFalse;

    PRINT1( _L( "MM MTP <= CSendObject::DoHandleResponsePhaseObjectL result = %d" ), result );

    return result;
    }