/* 

 *   Copyright (c) 1999, 2002 Michael J. Roberts.  All Rights Reserved.

 *   

 *   Please see the accompanying license file, LICENSE.TXT, for information

 *   on using and copying this software.  

 */

/*

Name

  tchostsi.h - stdio implementation of host interface

Function

Notes

Modified

  04/22/99 MJRoberts  - Creation

*/

#ifndef TCHOSTSI_H

#define TCHOSTSI_H

#include "t3std.h"

#include "tchost.h"

/* ------------------------------------------------------------------------ */

/*

 *   stdio host interface 

 */

class CTcHostIfcStdio: public CTcHostIfc

{

public:

    CTcHostIfcStdio()

    {

        /* by default, show progress messages */

        show_progress_ = TRUE;

        /* there's no status prefix string yet */

        status_prefix_ = 0;

    }

    ~CTcHostIfcStdio()

    {

        /* free our status prefix string */

        lib_free_str(status_prefix_);

    }

    /* set the status message prefix string */

    void set_status_prefix(const char *str)

    {

        /* delete any former prefix string */

        lib_free_str(status_prefix_);

        /* store a copy of the string */

        status_prefix_ = lib_copy_str(str);

    }

    /* display information messages */

    void v_print_msg(const char *msg, va_list args);

    /* display a process step message */

    void v_print_step(const char *msg, va_list args);

    /* display error messages */

    void v_print_err(const char *msg, va_list args);

    /* turn status (step) messages on/off */

    void set_show_progress(int flag) { show_progress_ = flag; }

protected:

    /* 

     *   internal display routine - formats the message, converts it to

     *   the console character set and displays the result on the standard

     *   output 

     */

    void v_printf(const char *msg, va_list args);

    /* flag: show progress (step) messages */

    int show_progress_;

    /* status prefix message */

    char *status_prefix_;

};