/*

* Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

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

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

#include <f32file.h>

#include <apmstd.h>

#include "contentIterator.h"

#include "virtualpath.h"

#include "content.h"

#include "manager.h"

#include "embeddedobject.h"

#include "FileContentIteratorBase.h"

#include "EmbeddedcontentIterator.h"

using namespace ContentAccess;

_LIT(KCAFBackSlashCharacter, "\\");

CFileContentIteratorBase* CFileContentIteratorBase::NewL(CManager &aManager, const TDesC& aPath, TBool aRecursive, const TDesC8& aMimeType)

	{

	CFileContentIteratorBase* self = new (ELeave) CFileContentIteratorBase(aManager, aPath, aRecursive, aMimeType);

	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop(self);

	return self;

	}

CFileContentIteratorBase::CFileContentIteratorBase(CManager& aManager, const TDesC& aPath, TBool aRecursive, const TDesC8& aMimeType) :

		iManager(aManager), iPath(aPath), iRecursive(aRecursive), iMimeType(aMimeType)

	{

	iDirIndex = 0;

	iFileIndex = 0;

	}

void CFileContentIteratorBase::ConstructL()

	{

	// Get our list of files and directories

	User::LeaveIfError(iManager.GetDir(iPath, ESortByName, KEntryAttNormal, iCurrentFileList, iCurrentDirectoryList));

	if(!iRecursive)

		{

		// Won't be needing the list of directories

		delete iCurrentDirectoryList;

		iCurrentDirectoryList = NULL;

		}

	// Find the Next,  (ie. first content object) inside this directory

	// This will leave if nothing was found

	User::LeaveIfError(Next());

	}

CFileContentIteratorBase::~CFileContentIteratorBase()

	{

	delete iSubIterator;

	delete iCurrentDirectoryList;

	delete iCurrentFileList;

	delete iNewPath;

	}

const TDesC& CFileContentIteratorBase::FileName() const

	{

	return iSubIterator->FileName();

	}

const TDesC& CFileContentIteratorBase::UniqueId() const

	{

	return iSubIterator->UniqueId();

	}

const TDesC& CFileContentIteratorBase::Name() const

	{

	return iSubIterator->Name();

	}

const TDesC8& CFileContentIteratorBase::MimeType() const

	{

	return iSubIterator->MimeType();

	}

TInt CFileContentIteratorBase::Next()

	{	

	_LIT(KSysDirEntry, "sys");

	TInt ret = KErrNotFound;

	// If we are already looking into some sub container, try finding the next in there

	if(iSubIterator)

		{

		ret = iSubIterator->Next();

		if(ret == KErrNone)

			{

			return ret;

			}

		else 

			{

			// Delete sub-iterator

			delete iSubIterator;

			iSubIterator = NULL;

			delete iNewPath;

			iNewPath = NULL;

			}

		}

	// Search files in our directory first

	// this allows us to free memory used by iCurrentFileList

	// before recursing into sub-directories

	if(iCurrentFileList)

		{

		for ( ; iFileIndex < iCurrentFileList->Count(); iFileIndex++)

			{

			// Get a reference to the file we are interested in

			const TEntry &entry = (*iCurrentFileList)[iFileIndex];

			// create a new path string for the sub directory

			TRAP(ret, iNewPath = HBufC::NewL(iPath.Length() + entry.iName.Length()));

			if(ret != KErrNone)

				{

				return ret;

				}

			iNewPath->Des().Append(iPath);

			iNewPath->Des().Append(entry.iName);

			// Look inside the file

			TRAP(ret, iSubIterator = CEmbeddedContentIterator::NewL(TVirtualPathPtr(*iNewPath, KNullDesC()), iRecursive, iMimeType));

			if(ret == KErrNone)

				{	

				// must have found something in the file

				// make sure next time we look at the next item in our list

				iFileIndex++;

				return KErrNone;

				}

			// next iteration

			delete iNewPath;

			iNewPath = NULL;

			}

		delete iCurrentFileList;

		iCurrentFileList = NULL;

		}

	if(iRecursive)

		{

		// Search sub directories

		for ( ; iDirIndex < iCurrentDirectoryList->Count(); iDirIndex++)

			{

			// Get a reference to the directory we are interested in

			const TEntry &entry = (*iCurrentDirectoryList)[iDirIndex];

			// make sure it's not the sys directory

			if(KSysDirEntry().CompareF(entry.iName) == 0 && iPath.Length() == 3)

				{

				// go to the next iteration, skip the sys directory

				continue;

				}

			// create a new path string for the sub directory

			TRAP(ret, iNewPath = HBufC::NewL(iPath.Length() + 1 + entry.iName.Length()));

			if(ret != KErrNone)

				{

				return ret;

				}

			iNewPath->Des().Append(iPath);

			iNewPath->Des().Append(entry.iName);

			iNewPath->Des().Append(KCAFBackSlashCharacter);

			// lets look inside the directory

			TRAP(ret, iSubIterator = CFileContentIteratorBase::NewL(iManager, *iNewPath, iRecursive, iMimeType));

			if(ret == KErrNone)

				{	

				// must have found something in the sub-iterator

				// make sure next time we look at the next item in our list

				iDirIndex++;

				return KErrNone;

				}

			// next iteration

			delete iNewPath;

			iNewPath = NULL;

			}

		}

	// reached the end of our list of directories and list of files

	return KErrNotFound;	

	}