/*

* Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "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:  CStringList implementation

*

*/

// INCLUDE FILES

#include "stringlist.h"

#include "capability.h"

#include "debug.h"

const TInt KMaxStringlistSize( 1000 );

// ============================= MEMBER FUNCTIONS ===============================

// -----------------------------------------------------------------------------

// CStringList::NewL()

// Two-phase constructor.

// -----------------------------------------------------------------------------

//

CStringList* CStringList::NewL()

    {

    CStringList* self = CStringList::NewLC();

    CleanupStack::Pop( self );

    return self;

    }

// -----------------------------------------------------------------------------

// CStringList::NewLC()

// Two-phase constructor. The created instance is placed to cleanup stack

// -----------------------------------------------------------------------------

//

CStringList* CStringList::NewLC()

    {

    CStringList* self = new ( ELeave ) CStringList();

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

// -----------------------------------------------------------------------------

// CStringList::CStringList()

// Default constuctor

// -----------------------------------------------------------------------------

//

CStringList::CStringList()

    {

    }

// -----------------------------------------------------------------------------

// CStringList::~CStringList()

// Destructor

// -----------------------------------------------------------------------------

//

CStringList::~CStringList()

    {

    delete iLines;

    iLines = NULL;

    }

// -----------------------------------------------------------------------------

// CStringList::ConstructL()

// Initializes member data

// -----------------------------------------------------------------------------

//

void CStringList::ConstructL()

    {

    const TInt KDefaultArrayGranularity = 10;

    iLines = new (ELeave) CDesCArrayFlat(KDefaultArrayGranularity);

    SetMark(0);

    }

// -----------------------------------------------------------------------------

// CStringList::Count() const

// Returns the count of lines

// -----------------------------------------------------------------------------

//

TInt CStringList::Count() const

    {

    return iLines->Count();

    }

// -----------------------------------------------------------------------------

// CStringList::Panic(TInt aPanic) const

// Creates a panic

// -----------------------------------------------------------------------------

//

#ifdef _DEBUG

void CStringList::Panic(TInt aPanic) const

#else

void CStringList::Panic(TInt /*aPanic*/) const

#endif

    {

    TRACE_FUNC_ENTRY;

#ifdef _DEBUG

    _LIT(KPanicCategory,"CStringList");

    User::Panic(KPanicCategory, aPanic);

#endif

    TRACE_FUNC_EXIT;

    }

// -----------------------------------------------------------------------------

// CStringList::Reset()

// Resets iLines

// -----------------------------------------------------------------------------

//

void CStringList::Reset()

    {

    iLines->Reset();

    }

// -----------------------------------------------------------------------------

// CStringList::WriteL(const TDesC& aText)

// Writes a string

// -----------------------------------------------------------------------------

//

void CStringList::WriteL(const TDesC& aText)

    {

    iLines->AppendL(aText);

    }

// -----------------------------------------------------------------------------

// CStringList::ReadPtr(TInt aIndex)

// Returns pointer to the string

// -----------------------------------------------------------------------------

//

TPtrC16 CStringList::ReadPtr(TInt aIndex)

    {

    if (aIndex<0 || aIndex>=Count())

        {

        Panic(KErrArgument);

        }

    return iLines->MdcaPoint(aIndex);

    }

// -----------------------------------------------------------------------------

// CStringList::CopyL(CStringList* aSource, TInt aStart, TInt aStop)

// Copies a string / strings

// -----------------------------------------------------------------------------

//

void CStringList::CopyL(CStringList* aSource, TInt aStart, TInt aStop)

    {

    if (aStart<0 || aStop>=aSource->Count() || aStart>aStop)

        {

        Panic(KErrArgument);

        }        

    for (TInt i=aStart; i<=aStop; i++)

        {

        WriteL(aSource->ReadPtr(i));

        }

    }

// -----------------------------------------------------------------------------

// CStringList::StrCopy(TDes& aTarget, const TDesC& aSource) const

// Copies the string

// -----------------------------------------------------------------------------

//

TBool CStringList::StrCopy(TDes& aTarget, const TDesC& aSource) const

    {

    TInt len=aTarget.MaxLength();

    if(len<aSource.Length()) 

        {

        aTarget.Copy(aSource.Left(len));

        return EFalse;

        }

    aTarget.Copy(aSource);

    return ETrue;

    }

// -----------------------------------------------------------------------------

// CStringList::ReadFromFileL(const TDesC& aFileName)

// Read strings from file.

// -----------------------------------------------------------------------------

//

void CStringList::ReadFromFileL( RFs& aFs, const TDesC& aFileName )

    {

    InternalizeL( aFs, aFileName );

    }

// -----------------------------------------------------------------------------

// CStringList::InternalizeL(const TDesC& aFileName)

// Internalizes from file

// -----------------------------------------------------------------------------

//

void CStringList::InternalizeL( RFs& aFs, const TDesC& aFileName )

    {

    RFile file;

    User::LeaveIfError( file.Open( aFs, aFileName, EFileRead ) );

    CleanupClosePushL( file );

    TFileText textFile;

    textFile.Set( file );

    textFile.Seek( ESeekStart );

    TBuf<KMaxSize> buffer;

    TInt count(0);

    for (;;)

        {

        count++;

        if ( count > KMaxStringlistSize )

            {

            break;

            }           

        buffer = KNullDesC;

        //

        // Read seems to read chars until newline is reached or

        // the descriptor is full. In case descriptor becomes full,

        // err is KErrTooBig and next read starts from the next line. 

        //

        TInt err = textFile.Read( buffer );

        if ( err == KErrEof )

            {

            break;

            }

        if ( err != KErrNone )

            {

            User::Leave( err );

            }           

        iLines->AppendL( buffer );

        }

    CleanupStack::PopAndDestroy( &file ); // file 

    }

// -----------------------------------------------------------------------------

// CStringList::Mark() const

// Returns the mark

// -----------------------------------------------------------------------------

//

TInt CStringList::Mark() const

    {

    return iMark;

    }

// -----------------------------------------------------------------------------

// CStringList::SetMark(TInt aMark)

// Sets mark

// -----------------------------------------------------------------------------

//

void CStringList::SetMark(TInt aMark)

    {

    iMark=aMark;

    }

// End of files