/* 

 *   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

  vmhostsi.h - simple stdio-based VM host application environment

Function

  Provides a simple implementation of the VM host application interface.

  This implementation is suitable for simple command-line tools with

  minimal user interface; more complete implementations should be used

  for most applications that embed the VM.

Notes

Modified

  07/29/99 MJRoberts  - Creation

*/

#ifndef VMHOSTSI_H

#define VMHOSTSI_H

#include "vmhost.h"

#include "vmhosttx.h"

class CVmHostIfcStdio: public CVmHostIfcText

{

public:

    /* create */

    CVmHostIfcStdio(const char *argv0);

    /* delete */

    virtual ~CVmHostIfcStdio();

    /* get the I/O safety level */

    virtual int get_io_safety() { return io_safety_; }

    /* set I/O safety level */

    virtual void set_io_safety(int level) { io_safety_ = level; }

    /* get the resource loader */

    virtual class CResLoader *get_cmap_res_loader() { return cmap_loader_; }

    /* get the resource path */

    virtual const char *get_res_path() { return 0; }

    /* get an image file name */

    virtual vmhost_gin_t get_image_name(char *, size_t)

        { return VMHOST_GIN_IGNORED; }

    /* get a special file system path */

    virtual void get_special_file_path(char *buf, size_t buflen, int id)

        { os_get_special_path(buf, buflen, argv0_, id); }

protected:

    /* 

     *   the original main program's argv[0] - we need to remember this

     *   because it's sometimes needed to resolve special file system paths

     *   on the local system 

     */

    char *argv0_;

    /* character mapping file resource loader */

    class CResLoader *cmap_loader_;

    /* current I/O safety level */

    int io_safety_;

};

#endif /* VMHOSTSI_H */