1 // Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

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

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

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

    15 // 

    16 //

    17 

    18 #include "FDESC.H"

    19 #include <e32cons.h>	// for CConsoleBase

    20 #include <sys/ioctl.h>

    21 

    22 void CTtyDesc::CheckConsoleCreated()

    23 	{

    24 	if (iConsole==NULL)

    25 		{

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

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

    28 		}

    29 	}

    30 

    31 CTtyDesc::~CTtyDesc()

    32 	{

    33 	CConsoleBase *it = iConsole;

    34 	iConsole = 0;

    35 	delete it;

    36 	}

    37 

    38 TInt CTtyDesc::FinalClose()

    39 	{

    40 	CConsoleBase *it = iConsole;

    41 	iConsole = 0;

    42 	if (it)

    43 		{

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

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

    46 		it->Getch();

    47 		delete it;

    48 		}

    49 	return KErrNone;

    50 	}

    51 

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

    53 	{

    54 	CheckConsoleCreated();

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

    56 	iConsole->Read(aStatus);

    57 	}

    58 

    59 void CTtyDesc::ReadCancel()

    60 	{

    61 	if (iConsole)

    62 		iConsole->ReadCancel();

    63 	}

    64 

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

    66 	{

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

    68 	return aStatus;

    69 	}

    70 

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

    72 	{

    73 	Write(aDesc);

    74 	Complete(aStatus, KErrNone);

    75 	}

    76 

    77 #if !defined(_UNICODE)

    78 void CTtyDesc::Write(TDes8 &aDesc)

    79 	{

    80 	CheckConsoleCreated();

    81 	iConsole->Write(aDesc);

    82 	}

    83 #else

    84 void CTtyDesc::Write(TDes8 &aDesc)

    85 	{

    86 	CheckConsoleCreated();

    87 

    88 	TInt remaining = aDesc.Length();

    89 	const TText8* cp = aDesc.Ptr();

    90 	while (remaining)

    91 	    {

    92 	    TBuf16<256> buffer;

    93 	    TInt len = Min(remaining, 256);

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

    95 

    96 	    iConsole->Write(buffer);

    97 

    98 	    cp += len;

    99 	    remaining -= len;

   100 	    }

   101 	}

   102 #endif

   103 

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

   105 	{

   106 	TText8 ch;

   107 

   108 	aDesc.Zero();

   109 	switch (aCode)

   110 	{

   111 	case EKeyPrintScreen:

   112 		return;		// unknowable keycodes are ignored

   113 

   114 	case EKeyEnter:

   115 		ch='\n'; break;

   116 	case EKeyBackspace:

   117 		ch=0x08; break;

   118 	default:

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

   120 		break;

   121 	}

   122 	aDesc.Append(ch);

   123 	// Could suppress echoing at this point

   124 	Write(aDesc);

   125 	return;

   126 	}

   127 

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

   129 	{

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

   131 	// terminal device implementation

   132 	Complete(aStatus,KErrNone);

   133 	}

   134 

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

   136 	{

   137 	TInt ret=aStatus;

   138 	if (ret!=KErrNone)

   139 		return ret;

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

   141 	switch (aCmd)

   142 		{

   143 	case E32IONREAD:

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

   145 		break;

   146 	case E32IOSELECT:

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

   148 		break;

   149 	default:

   150 		ret=KErrNotSupported;

   151 		break;

   152 		}

   153 	return ret;

   154 	}

   155