/*

* Copyright (c) 2002-2004 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:  Debugging utilities implementation.

*

*/

// INCLUDE FILES

#include "RubyDebug.h"

#ifdef __RUBY_DEBUG_TRACES_TO_FILE

#include <f32file.h>

#endif

// EXTERNAL DATA STRUCTURES

// EXTERNAL FUNCTION PROTOTYPES  

// CONSTANTS

// MACROS

// LOCAL CONSTANTS AND MACROS

// MODULE DATA STRUCTURES

// LOCAL FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

// ============================= LOCAL FUNCTIONS ===============================

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

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

// RRubyDebug::PrintToFile

// Method for writing traces to a file.

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

//

#ifdef __RUBY_DEBUG_TRACES_TO_FILE

#ifdef _DEBUG // UDEB version:

EXPORT_C void RRubyDebug::PrintToFile( TRefByValue<const TDesC> aFmt, ... )

    {

    _LIT( KRubyLogFileName, "\\Logs\\RubyTrace.log" );

    const TInt KRubyDebugMaxLineLength = 0x80; // rest will be truncated

    const TInt KRubyDebugOpenFileRetries = 100;

    const TInt KRubyDebugOpenFileInterval = 1000;

    const TUint16 KRubyDebugLineSep1 = 0x0d;

    const TUint16 KRubyDebugLineSep2 = 0x0a;

    // Handle variable argument list

    VA_LIST list;

	VA_START( list, aFmt );

	TBuf<KRubyDebugMaxLineLength+2> aBuf;

    TTruncateOverflow overflow;

	aBuf.AppendFormatList( aFmt, list, &overflow );

	if( aBuf.Length() > ( KRubyDebugMaxLineLength - 2 ) )

		{

		aBuf.Delete(aBuf.Length() - 2, 2);

		}

    // Add linefeed characters

    aBuf.Append( KRubyDebugLineSep1 );

    aBuf.Append( KRubyDebugLineSep2 );

    RFs fs;

    if ( fs.Connect() == KErrNone )

        {

        RFile file;

        // Open file in an exclusive mode so that only one thread 

        // can acess it simultaneously

        TUint fileMode = EFileWrite | EFileShareExclusive;

        TInt err = file.Open( fs, KRubyLogFileName, fileMode );

        // Create a file if it doesn't exist

        if ( err == KErrNotFound )

            {

            err = file.Create( fs, KRubyLogFileName, fileMode );

            }

        else

            {

            // Error in opening the file

            TInt retryCount = KRubyDebugOpenFileRetries;

            while ( err == KErrInUse && retryCount-- )

                {

                // Some other tread is accessing the file, wait a while...

                User::After( KRubyDebugOpenFileInterval );

                err = file.Open( fs, KRubyLogFileName, fileMode );

                }

            }

        // Check if we have access to a file

        if ( err == KErrNone )

            {

            TInt offset = 0;

            if ( file.Seek( ESeekEnd, offset ) == KErrNone )

                {

                // Append text to the end of file

                TPtr8 ptr8( (TUint8*)aBuf.Ptr(), aBuf.Size(), aBuf.Size() );

                file.Write( ptr8 );

                }

            file.Close();

            }

        fs.Close();

        }

    }

#else // UREL version:

EXPORT_C void RRubyDebug::PrintToFile( TRefByValue<const TDesC> /*aFmt*/, ... )

    {

    }

#endif

#endif // __RUBY_DEBUG_TRACES_TO_FILE

// ========================== OTHER EXPORTED FUNCTIONS =========================

//  End of File