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// $Id: RlinkPortTerm.hpp 486 2013-02-10 22:34:43Z mueller $
//
// Copyright 2011- by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
//
// This program is free software; you may redistribute and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation, either version 2, or at your option any later version.
//
// This program 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 General Public License
// for complete details.
// 
// Revision History: 
// Date         Rev Version  Comment
// 2011-12-18   440   1.0.2  add kStatNPort stats
// 2011-12-11   438   1.0.1  Read(),Write(): added for xon handling, tcdrain();
// 2011-03-27   374   1.0    Initial version
// ---------------------------------------------------------------------------
 
 
/*!
  \file
  \version $Id: RlinkPortTerm.hpp 486 2013-02-10 22:34:43Z mueller $
  \brief   Declaration of class RlinkPortTerm.
*/
 
#ifndef included_Retro_RlinkPortTerm
#define included_Retro_RlinkPortTerm 1
 
#include <vector>
#include <termios.h>
 
#include "RlinkPort.hpp"
 
namespace Retro {
 
  class RlinkPortTerm : public RlinkPort {
    public:
 
                    RlinkPortTerm();
      virtual       ~RlinkPortTerm();
 
      virtual bool  Open(const std::string& url, RerrMsg& emsg);
      virtual void  Close();
      virtual int   Read(uint8_t* buf, size_t size, double timeout, 
                         RerrMsg& emsg);
      virtual int   Write(const uint8_t* buf, size_t size, RerrMsg& emsg);
 
      virtual void  Dump(std::ostream& os, int ind=0, const char* text=0) const;
 
    // some constants (also defined in cpp)
      static const uint8_t kc_xon  = 0x11;  // XON  char -> ^Q = hex 11
      static const uint8_t kc_xoff = 0x13;  // XOFF char -> ^S = hex 13
      static const uint8_t kc_xesc = 0x1b;  // XESC char -> ^[ = ESC = hex 1B
 
    // statistics counter indices
      enum stats {
        kStatNPortTxXesc = RlinkPort::kDimStat,
        kStatNPortRxXesc,
        kDimStat
      };    
 
    protected:
      void          DumpTios(std::ostream& os, int ind, const std::string& name,
                             const struct termios& tios) const;
 
    protected:
      struct termios fTiosOld;
      struct termios fTiosNew;
      bool fUseXon;                         //!< xon attribute set 
      bool fPendXesc;                       //!< xesc pending
      std::vector<uint8_t> fTxBuf;          //!< buffer to handle xesc
      std::vector<uint8_t> fRxBuf;          //!< buffer to handle xesc
  };
 
} // end namespace Retro
 
//#include "RlinkPortTerm.ipp"
 
#endif