/**************************************************************/
  /*                                                            */
  /*      UNIX 1 / WS 92/93       Gruppe  ux803                 */
  /*      6. Uebung - Aufgabe 4 - msh.c                         */
  /*                                                            */
  /*      Vorname     Name        Matrikelnr.                   */
  /*     ---------   -------     -------------                  */
  /*      Dietmar     Dierks        125761                      */
  /*      Roman       Czyborra      127221                      */
  /*      Torsten     Buller        117894                      */
  /*      Gerasimos   Paliatsaras   140956                      */
  /*                                                            */
  /**************************************************************/


#include "5/msh.h"
#include <signal.h>

int shellpid;

void main ()
{
  static char buf [BUFLEN], *res;
  static struct kommando *k, *kp;
  
  signal (SIGINT,SIG_IGN); signal (SIGQUIT,SIG_IGN); 
  signal (SIGTSTP,SIG_IGN); signal (SIGTTIN,SIG_IGN); signal (SIGTTOU,SIG_IGN);

  shellpid = getpid (); setpgrp (shellpid, shellpid);

  while (1)
    {
      do_wait (-1, 0); show_prompt ();
      res = readline (buf, BUFLEN);
      if (!res) { putchar ('\n');
                  return;
                }
      for (k = kp = parseline (buf); kp; kp = kp -> next)
	if (!do_builtin (kp)) do_command (kp);
      forget (k);
    }
}