external/bsd/nvi/dist/ex/ex_stop.c

   1 /*      $NetBSD: ex_stop.c,v 1.2 2013/11/22 15:52:05 christos Exp $     */
   2 /*-
   3  * Copyright (c) 1993, 1994
   4  *      The Regents of the University of California.  All rights reserved.
   5  * Copyright (c) 1992, 1993, 1994, 1995, 1996
   6  *      Keith Bostic.  All rights reserved.
   7  *
   8  * See the LICENSE file for redistribution information.
   9  */
  10
  11 #include "config.h"
  12
  13 #ifndef lint
  14 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 ";
  15 #endif /* not lint */
  16
  17 #include <sys/types.h>
  18 #include <sys/queue.h>
  19
  20 #include <bitstring.h>
  21 #include <errno.h>
  22 #include <limits.h>
  23 #include <stdio.h>
  24 #include <string.h>
  25 #include <unistd.h>
  26
  27 #include "../common/common.h"
  28
  29 /*
  30  * ex_stop -- :stop[!]
  31  *            :suspend[!]
  32  *      Suspend execution.
  33  *
  34  * PUBLIC: int ex_stop __P((SCR *, EXCMD *));
  35  */
  36 int
  37 ex_stop(SCR *sp, EXCMD *cmdp)
  38 {
  39         int allowed;
  40
  41         /* For some strange reason, the force flag turns off autowrite. */
  42         if (!FL_ISSET(cmdp->iflags, E_C_FORCE) && file_aw(sp, FS_ALL))
  43                 return (1);
  44
  45         if (sp->gp->scr_suspend(sp, &allowed))
  46                 return (1);
  47         if (!allowed)
  48                 ex_emsg(sp, NULL, EXM_NOSUSPEND);
  49         return (0);
  50 }