ex/ex_stop.c

   1 /*-
   2  * Copyright (c) 1993, 1994
   3  *      The Regents of the University of California.  All rights reserved.
   4  * Copyright (c) 1992, 1993, 1994, 1995, 1996
   5  *      Keith Bostic.  All rights reserved.
   6  *
   7  * See the LICENSE file for redistribution information.
   8  */
   9
  10 #include "config.h"
  11
  12 #ifndef lint
  13 static const char sccsid[] = "$Id: ex_stop.c,v 10.10 1996/03/06 19:52:42 bostic Exp $ (Berkeley) $Date: 1996/03/06 19:52:42 $";
  14 #endif /* not lint */
  15
  16 #include <sys/types.h>
  17 #include <sys/queue.h>
  18
  19 #include <bitstring.h>
  20 #include <errno.h>
  21 #include <limits.h>
  22 #include <stdio.h>
  23 #include <string.h>
  24 #include <unistd.h>
  25
  26 #include "../common/common.h"
  27
  28 /*
  29  * ex_stop -- :stop[!]
  30  *            :suspend[!]
  31  *      Suspend execution.
  32  *
  33  * PUBLIC: int ex_stop __P((SCR *, EXCMD *));
  34  */
  35 int
  36 ex_stop(sp, cmdp)
  37         SCR *sp;
  38         EXCMD *cmdp;
  39 {
  40         int allowed;
  41
  42         /* For some strange reason, the force flag turns off autowrite. */
  43         if (!FL_ISSET(cmdp->iflags, E_C_FORCE) && file_aw(sp, FS_ALL))
  44                 return (1);
  45
  46         if (sp->gp->scr_suspend(sp, &allowed))
  47                 return (1);
  48         if (!allowed)
  49                 ex_emsg(sp, NULL, EXM_NOSUSPEND);
  50         return (0);
  51 }