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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/

#ifndef _SBIOSYS_HXX
#define _SBIOSYS_HXX

#include <tools/stream.hxx>
#include <basic/sberrors.hxx>

class SvStream;

// Zur Zeit sind globale Dateien (Kanalnummern 256 bis 511)
// nicht implementiert.

#define CHANNELS 256
#define CONSOLE  0

#define	SBSTRM_INPUT	0x0001		// Input
#define	SBSTRM_OUTPUT	0x0002		// Output
#define	SBSTRM_RANDOM	0x0004		// Random
#define	SBSTRM_APPEND	0x0008		// Append
#define	SBSTRM_BINARY	0x0010		// Binary

class SbiStream {
    SvStream* pStrm;				// der Stream
    ULONG  nExpandOnWriteTo;		// bei Schreibzugriff, den Stream
                                    // bis zu dieser Groesse aufblasen
    ByteString aLine;				// aktuelle Zeile
    ULONG  nLine;					// aktuelle Zeilennummer
    short  nLen;	 				// Pufferlaenge
    short  nMode;					// Bits:
    short  nChan;					// aktueller Kanal
    SbError nError;					// letzter Fehlercode
    void   MapError();				// Fehlercode mappen

public:
    SbiStream();
   ~SbiStream();
    SbError Open( short, const ByteString&, short, short, short );
    SbError Close();
    SbError Read( ByteString&, USHORT = 0, bool bForceReadingPerByte=false );
    SbError Read( char& );
    SbError Write( const ByteString&, USHORT = 0 );

    bool IsText() const		{ return (nMode & SBSTRM_BINARY) == 0; }
    bool IsRandom() const	{ return (nMode & SBSTRM_RANDOM) != 0; }
    bool IsBinary() const	{ return (nMode & SBSTRM_BINARY) != 0; }
    bool IsSeq() const		{ return (nMode & SBSTRM_RANDOM) == 0; }
    bool IsAppend() const	{ return (nMode & SBSTRM_APPEND) != 0; }
    short GetBlockLen() const 		   { return nLen; 			}
    short GetMode() const 			   { return nMode; 			}
    ULONG GetLine() const			   { return nLine;			}
    void SetExpandOnWriteTo( ULONG n ) { nExpandOnWriteTo = n;	}
    void ExpandFile();
    SvStream* GetStrm() 			   { return pStrm; 		   	}
};

class SbiIoSystem {
    SbiStream* pChan[ CHANNELS ];
    ByteString	aPrompt;			// Input-Prompt
    ByteString	aIn, aOut;	  		// Console-Buffer
    short     nChan;				// aktueller Kanal
    SbError	  nError;				// letzter Fehlercode
    void	  ReadCon( ByteString& );
    void	  WriteCon( const ByteString& );
public:
    SbiIoSystem();
   ~SbiIoSystem();
    SbError GetError();
    void  Shutdown();
    void  SetPrompt( const ByteString& r ) { aPrompt = r; }
    void  SetChannel( short n  )	   { nChan = n;   }
    short GetChannel() const		   { return nChan;}
    void  ResetChannel() 			   { nChan = 0;   }
    void  Open( short, const ByteString&, short, short, short );
    void  Close();
    void  Read( ByteString&, short = 0 );
    char  Read();
    void  Write( const ByteString&, short = 0 );
    short NextChannel();
    // 0 == bad channel or no SvStream (nChannel=0..CHANNELS-1)
    SbiStream* GetStream( short nChannel ) const;
    void  CloseAll(); // JSM
};

#endif

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */