usbclasses/pictbridgeengine/src/dpsfile.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 09:14:30 +0200
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/*
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* Copyright (c) 2006, 2007 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:  This class reads and writes the file content. 
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*
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*/
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#include "dpsfile.h"
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#include "dpsdefs.h"
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#include "dpsconst.h"
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#ifdef _DEBUG
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#	define IF_DEBUG(t) {RDebug::t;}
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#else
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#	define IF_DEBUG(t)
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#endif
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// --------------------------------------------------------------------------
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// 
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// --------------------------------------------------------------------------
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//
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CDpsFile* CDpsFile::NewL()
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	{
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	IF_DEBUG(Print(_L("CDpsFile::NewL")));
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	CDpsFile* self = new (ELeave) CDpsFile();
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	CleanupStack::PushL(self);
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    self->ConstructL();
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    CleanupStack::Pop(); 
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	return self;
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	}
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// --------------------------------------------------------------------------
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// 
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// --------------------------------------------------------------------------
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//
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void CDpsFile::ConstructL()
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    {
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    IF_DEBUG(Print(_L(">>>CDpsFile::ConstructL")));    
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	User::LeaveIfError(iFs.Connect());
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    IF_DEBUG(Print(_L("<<<CDpsFile::ConstructL")));    
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    }
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// --------------------------------------------------------------------------
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// 
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// --------------------------------------------------------------------------
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//
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CDpsFile::~CDpsFile()
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	{
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	IF_DEBUG(Print(_L(">>>CDpsFile::~")));        
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	iFs.Close();
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	IF_DEBUG(Print(_L("<<<CDpsFile::~")));        
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    }
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// ---------------------------------------------------------------------------
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// 
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// ---------------------------------------------------------------------------
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//
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TInt CDpsFile::CreateScriptFile(const TDesC& aFileName, const TDesC8& aScript,
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								const TInt aFileSize)
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    {
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    IF_DEBUG(Print(_L(">>>CDpsFile::CreateScriptFile size %d"), aFileSize));            
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    RFile file;
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    TInt err = file.Replace(iFs, aFileName, EFileShareExclusive);
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    IF_DEBUG(Print(_L("---the error is %d"), err));
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    if (err != KErrNone)
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        {
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        return err;
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        }
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    TInt fileSize = aScript.Size();
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    if (!fileSize)
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        {
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        err = file.Write(_L8(""), 0);
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        }
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    else if ( fileSize <= aFileSize)
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        {
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        err = file.Write(aScript, fileSize);
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        }
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    else
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        {
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        err = file.Write(aScript, aFileSize);
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        }
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    file.Close();
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    IF_DEBUG(Print(_L("<<<CDpsFile::CreateScriptFile %d"), err));            
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    return err;   
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    }
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// ---------------------------------------------------------------------------
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// 
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// ---------------------------------------------------------------------------
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//
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void CDpsFile::GetContentL(const TDesC& aFileName, TDes8& aScript)
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    {
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    IF_DEBUG(Print(_L(">>>CDpsFile::GetContent %S"), &aFileName));                
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    RFile file;
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    CleanupClosePushL(file);
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    User::LeaveIfError(file.Open(iFs, aFileName, EFileRead));
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    User::LeaveIfError(file.Read(aScript));
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    CleanupStack::PopAndDestroy();
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    IF_DEBUG(Print(_L("<<<CDpsFile::GetContent")));                       
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    }
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// ---------------------------------------------------------------------------
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// 
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// ---------------------------------------------------------------------------
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//    
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void CDpsFile::FileSizeL(const TDesC& aFileName, TInt& aSize)
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    {
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    IF_DEBUG(Print(_L(">>>CDpsFile::FileSize %S"), &aFileName));       
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    RFile file;
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    CleanupClosePushL(file);
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    User::LeaveIfError(file.Open(iFs, aFileName, EFileRead)); 
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    User::LeaveIfError(file.Size(aSize));    
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    CleanupStack::PopAndDestroy();
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    IF_DEBUG(Print(_L("<<<CDpsFile::FileSize %d"), aSize));                
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    }
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// ---------------------------------------------------------------------------
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// 
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// ---------------------------------------------------------------------------
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//    
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TInt CDpsFile::Delete(const TDesC& aFileName)
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    {
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    IF_DEBUG(Print(_L("CDpsFile::Delete")));                    
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    return iFs.Delete(aFileName);
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    }