dist/nvi/ex/ex_stop.c

   1 /*      $NetBSD$ */
   2
   3 /*-
   4  * Copyright (c) 1993, 1994
   5  *      The Regents of the University of California.  All rights reserved.
   6  * Copyright (c) 1992, 1993, 1994, 1995, 1996
   7  *      Keith Bostic.  All rights reserved.
   8  *
   9  * See the LICENSE file for redistribution information.
  10  */
  11
  12 #include "config.h"
  13
  14 #ifndef lint
  15 static const char sccsid[] = "Id: ex_stop.c,v 10.11 2001/06/25 15:19:20 skimo Exp (Berkeley) Date: 2001/06/25 15:19:20";
  16 #endif /* not lint */
  17
  18 #include <sys/types.h>
  19 #include <sys/queue.h>
  20
  21 #include <bitstring.h>
  22 #include <errno.h>
  23 #include <limits.h>
  24 #include <stdio.h>
  25 #include <string.h>
  26 #include <unistd.h>
  27
  28 #include "../common/common.h"
  29
  30 /*
  31  * ex_stop -- :stop[!]
  32  *            :suspend[!]
  33  *      Suspend execution.
  34  *
  35  * PUBLIC: int ex_stop __P((SCR *, EXCMD *));
  36  */
  37 int
  38 ex_stop(SCR *sp, 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 }