Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ncar!noao!asuvax!mcdphx!hrc!dan
From: dan@hrc.UUCP (Dan Troxel)
Newsgroups: comp.databases
Subject: Accell 1.3 & Unify 4.0 ( how do they set the i/o when going to vi? )
Message-ID: <198069@hrc.UUCP>
Date: 27 Feb 89 20:44:22 GMT
Organization: Handwriting Research Corp. - Phoenix, AZ
Lines: 80


What routine is Accell 1.3 using when executing the vi for editing .fs scripts?

The reason for the question, is I have need to run shell scripts from Accell,
and the $push_shell() function, only executes /bin/sh, not a user
selectable program. I have hacked, (and I mean hacked), a function call that
remembers what the terminal i/o of Accell requires, and 'stty sane' s the
terminal when calling the script. The problem is, when calling programs 
such as 'vi', when called, it barfs. ( sorry to be grafic, but that is how
I feel ). Any ideas?




---------------------------cut here------------------------------------------
/*******************************************************************************
*                                                                              *
* When calling a shell program, it is good to set the terminal io to sane mode *
* by a 'stty sane'. This will allow for normal screen io, that most users      *
* are accustomed to. Use push_shell$() if you wish to get a shell prompt.      *
*                                                                              *
* Follow the Accell manual instructions in creating the call to be linked into *
* the manager. If you have any questions, please feel free to call me.         *
* Dan Troxel @ HRC in Phoenix, AZ  (602) 957-8870                              *
*                                                                              *
*                                                                              *
* One thing that should be done, is resetting ALL of the ioctl and signal      *
* calls, so that any program can be run by call_system. ie: vi does not        *
* run correctly.                                                               *
*                                                                              *
*******************************************************************************/

#include <stdio.h>
#include "chookincl.h"
#include <ctype.h>
#include <termio.h>

struct termio tsav,tchg;

call_system(argc,argv)
int argc;
AVAL *argv;
{
	char *p,buf[120];
	int c;

	reset(1);			/* saves terminal io specs for accell */

	p=argv[0].aval.stval;		/* struct where call args are found   */

	usystem(p);			/* undocumented UNIFY call            */

	reset(0);			/* resets terminal specs for accell   */

	return;
}


reset(n)
int n;
{

if(n==1 && ioctl(0,TCGETA,&tsav)==-1)
	{
	perror("Can't get original settings");
	exit(1);
	}

if(n==0 && ioctl(0,TCSETA,&tsav)==-1)
	{
	perror("Can't reset original settings");
	exit(3);
	}
}

----------------------------cut here-----------------------------------------
-- 
Dan Troxel @ Handwriting Research Corporation                  WK 1-602-957-8870
Camelback Corporate Center  2821 E. Camelback Road  Suite 600  Phoenix, AZ 85016
ncar!noao!asuvax!hrc!dan                                  hrc!dan@asuvax.asu.edu