/*

* Copyright (c) 2005 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:  TARM character conversion methods

*

*/

#include "TARMCharConv.h"

#include <utf.h>

CTARMCharConv::CTARMCharConv()

	{

	}

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

// TInt CTARMCharConv::ConvertToUtf8LC

// Encodes from Unicode UCS-2 to UTF-8

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

NSMLDMURI_EXPORT_C HBufC8* CTARMCharConv::ConvertToUtf8LC(const TDesC16& aText)

    {

    TPtrC16    remainder( aText );

    TBuf8<20>  utfBuffer;

    HBufC8     *ret    = 0;

    CBufFlat   *buffer = CBufFlat::NewL( 128 );

    CleanupStack::PushL( buffer );

    TBool finish = EFalse;

    while( !finish )

        {

        utfBuffer.Zero();

        TInt unconverted = CnvUtfConverter::ConvertFromUnicodeToUtf8( utfBuffer, remainder );

        if( unconverted >= 0 )

            {

            remainder.Set( remainder.Right( unconverted ) );

            buffer->InsertL( buffer->Size(), utfBuffer );

            finish = (unconverted == 0);

            }

        else

            {

            User::Leave( unconverted );

            }

        }

    buffer->Compress();

    ret = buffer->Ptr( 0 ).Alloc();

    CleanupStack::PopAndDestroy( buffer );

    CleanupStack::PushL( ret );

    return ret;

    }

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

// TInt CTARMCharConv::ConvertFromUtf8LC

// Decodes from UTF-8 to Unicode UCS-2

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

NSMLDMURI_EXPORT_C HBufC16* CTARMCharConv::ConvertFromUtf8LC(const TDesC8& aText)

    {

    TPtrC8     remainder( aText );

    TBuf16<20> unicodeBuffer;

    HBufC16    *ret    = 0;

    CBufFlat   *buffer = CBufFlat::NewL( 128 );

    CleanupStack::PushL( buffer );

    TBool finish = EFalse;

    while( !finish )

        {

        unicodeBuffer.Zero();

        TInt unconverted = CnvUtfConverter::ConvertToUnicodeFromUtf8( unicodeBuffer, remainder );

        if( unconverted >= 0 )

            {

            remainder.Set( remainder.Right( unconverted ) );

            TPtrC8 ptr( reinterpret_cast<const unsigned char*>(unicodeBuffer.Ptr()), unicodeBuffer.Length()*2 );

            buffer->InsertL( buffer->Size(), ptr );

            finish = (unconverted == 0);

            }

        else

            {

            User::Leave( unconverted );

            }

        }

    buffer->Compress();

    TPtrC16 ptr16( reinterpret_cast<const unsigned short*>(buffer->Ptr( 0 ).Ptr()), buffer->Size() / 2 );

    ret = ptr16.Alloc();

    CleanupStack::PopAndDestroy( buffer );

    CleanupStack::PushL( ret );

    return ret;

    }

// End of file