// Copyright (c) 1997-2009 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:

// Simple implementation of stdin/stdout/stderr class which uses a console, created on demand.

// 

//

#include "FDESC.H"

#include <e32cons.h>	// for CConsoleBase

#include <sys/ioctl.h>

void CTtyDesc::CheckConsoleCreated()

	{

	if (iConsole==NULL)

		{

		TRAPD(r,iConsole=Console::NewL(_L("STDOUT"),TSize(KConsFullScreen,KConsFullScreen)))

		__ASSERT_ALWAYS(r==KErrNone,User::Panic(_L("ESTLIB Console"),0));

		}

	}

CTtyDesc::~CTtyDesc()

	{

	CConsoleBase *it = iConsole;

	iConsole = 0;

	delete it;

	}

TInt CTtyDesc::FinalClose()

	{

	CConsoleBase *it = iConsole;

	iConsole = 0;

	if (it)

		{

		// it->SetTitle(_L("Console closed - press any key"));

		it->Printf(_L("Console closed - press any key"));

		it->Getch();

		delete it;

		}

	return KErrNone;

	}

void CTtyDesc::Read(TDes8& /*aDesc*/, TRequestStatus& aStatus)

	{

	CheckConsoleCreated();

	// See implemention of Getch() in E32\UBAS\UB_CONS.CPP

	iConsole->Read(aStatus);

	}

void CTtyDesc::ReadCancel()

	{

	if (iConsole)

		iConsole->ReadCancel();

	}

TInt CTtyDesc::ReadCompletion(TDes8& aDesc, TInt aStatus)

	{

	MapCodeAndEcho(aDesc, iConsole->KeyCode());

	return aStatus;

	}

void CTtyDesc::Write(TDes8 &aDesc, TRequestStatus& aStatus)

	{

	Write(aDesc);

	Complete(aStatus, KErrNone);

	}

#if !defined(_UNICODE)

void CTtyDesc::Write(TDes8 &aDesc)

	{

	CheckConsoleCreated();

	iConsole->Write(aDesc);

	}

#else

void CTtyDesc::Write(TDes8 &aDesc)

	{

	CheckConsoleCreated();

	TInt remaining = aDesc.Length();

	const TText8* cp = aDesc.Ptr();

	while (remaining)

	    {

	    TBuf16<256> buffer;

	    TInt len = Min(remaining, 256);

	    buffer.Copy(TPtrC8(cp, len));

	    iConsole->Write(buffer);

	    cp += len;

	    remaining -= len;

	    }

	}

#endif

void CTtyDesc::MapCodeAndEcho(TDes8& aDesc, TKeyCode aCode)

	{

	TText8 ch;

	aDesc.Zero();

	switch (aCode)

	{

	case EKeyPrintScreen:

		return;		// unknowable keycodes are ignored

	case EKeyEnter:

		ch='\n'; break;

	case EKeyBackspace:

		ch=0x08; break;

	default:

		ch=(TText8)(aCode&0xff);	// who knows - it's not documented

		break;

	}

	aDesc.Append(ch);

	// Could suppress echoing at this point

	Write(aDesc);

	return;

	}

void CTtyDesc::Ioctl(int /*aCmd*/, void* /*aParam*/, TRequestStatus& aStatus)

	{

	// bodge for now - this will become more complicated if we develop a better

	// terminal device implementation

	Complete(aStatus,KErrNone);

	}

TInt CTtyDesc::IoctlCompletion(int aCmd, void* aParam, TInt aStatus)

	{

	TInt ret=aStatus;

	if (ret!=KErrNone)

		return ret;

	int *param=REINTERPRET_CAST(int*,aParam);

	switch (aCmd)

		{

	case E32IONREAD:

		*param=1;	// claim that there is always data available

		break;

	case E32IOSELECT:

		*param=(*param)&(E32SELECT_READ|E32SELECT_WRITE);

		break;

	default:

		ret=KErrNotSupported;

		break;

		}

	return ret;

	}