include/wvsystem.h

/* -*- Mode: C++ -*-
 * Worldvisions Weaver Software:
 *   Copyright (C) 1997-2002 Net Integration Technologies, Inc.
 */
#ifndef __WVSYSTEM_H
#define __WVSYSTEM_H
 
#include "wvsubproc.h"

class WvSystem : private WvSubProc
{
public:
    WvSystem(const char cmd[],
             const char *a0 = NULL,
             const char *a1 = NULL,
             const char *a2 = NULL,
             const char *a3 = NULL,
             const char *a4 = NULL,
             const char *a5 = NULL,
             const char *a6 = NULL,
             const char *a7 = NULL,
             const char *a8 = NULL,
             const char *a9 = NULL,
             const char *a10 = NULL,
             const char *a11 = NULL,
             const char *a12 = NULL,
             const char *a13 = NULL,
             const char *a14 = NULL,
             const char *a15 = NULL,
             const char *a16 = NULL,
             const char *a17 = NULL,
             const char *a18 = NULL,
             const char *a19 = NULL
             )
    {
        // this function is inline so it can be a little bit less wasteful...
        const char * const argv[] = {
            cmd,
            a0, a1, a2, a3, a4, a5, a6, a7, a8, a9,
            a10, a11, a12, a13, a14, a15, a16, a17, a18, a19,
            NULL
        };
        init(argv);
    }

    WvSystem(const char * const *argv)
        { init(argv); }
    
    virtual ~WvSystem();
    
    int go();
    
    WvSystem &infile(WvStringParm filename);
    
    WvSystem &outfile(WvStringParm filename);
    
    WvSystem &errfile(WvStringParm filename);
 
private:
    bool started;
    WvString fdfiles[3]; // stdin, stdout, stderr
    
    void init(const char * const *argv);
    virtual int fork(int *waitfd);
};
 
 
#endif // __WVSYSTEM_H