ex/ex_screen.c

   1 /*-
   2  * Copyright (c) 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * %sccs.include.redist.c%
   6  */
   7
   8 #ifndef lint
   9 static char sccsid[] = "$Id: ex_screen.c,v 8.8 1993/11/23 10:25:49 bostic Exp $ (Berkeley) $Date: 1993/11/23 10:25:49 $";
  10 #endif /* not lint */
  11
  12 #include <sys/types.h>
  13
  14 #include <stdlib.h>
  15 #include <string.h>
  16
  17 #include "vi.h"
  18 #include "excmd.h"
  19
  20 /*
  21  * ex_split --  :s[plit] [file ...]
  22  *      Split the screen, optionally setting the file list.
  23  */
  24 int
  25 ex_split(sp, ep, cmdp)
  26         SCR *sp;
  27         EXF *ep;
  28         EXCMDARG *cmdp;
  29 {
  30         return (sp->s_split(sp, cmdp->argc ? cmdp->argv : NULL));
  31 }
  32
  33 /*
  34  * ex_bg --     :bg
  35  *      Hide the screen.
  36  */
  37 int
  38 ex_bg(sp, ep, cmdp)
  39         SCR *sp;
  40         EXF *ep;
  41         EXCMDARG *cmdp;
  42 {
  43         return (sp->s_bg(sp));
  44 }
  45
  46 /*
  47  * ex_fg --     :fg [file]
  48  *      Show the screen.
  49  */
  50 int
  51 ex_fg(sp, ep, cmdp)
  52         SCR *sp;
  53         EXF *ep;
  54         EXCMDARG *cmdp;
  55 {
  56         return (sp->s_fg(sp, cmdp->argc ? cmdp->argv[0] : NULL));
  57 }
  58
  59 /*
  60  * ex_resize -- :resize [change]
  61  *      Change the screen size.
  62  */
  63 int
  64 ex_resize(sp, ep, cmdp)
  65         SCR *sp;
  66         EXF *ep;
  67         EXCMDARG *cmdp;
  68 {
  69         if (!F_ISSET(cmdp, E_COUNT))
  70                 cmdp->count = 1;
  71         return (sp->s_resize(sp, cmdp->count));
  72 }
  73
  74 /*
  75  * ex_sdisplay --
  76  *      Display the list of screens.
  77  */
  78 int
  79 ex_sdisplay(sp, ep)
  80         SCR *sp;
  81         EXF *ep;
  82 {
  83         SCR *tsp;
  84         int cnt, col, len, sep;
  85
  86         if ((tsp = sp->gp->hq.cqh_first) == (void *)&sp->gp->hq) {
  87                 (void)ex_printf(EXCOOKIE,
  88                     "No backgrounded screens to display.\n");
  89                 return (0);
  90         }
  91
  92         col = len = sep = 0;
  93         for (cnt = 1; tsp != (void *)&sp->gp->hq; tsp = tsp->q.cqe_next) {
  94                 col += len = tsp->frp->nlen + sep;
  95                 if (col >= sp->cols - 1) {
  96                         col = len;
  97                         sep = 0;
  98                         (void)ex_printf(EXCOOKIE, "\n");
  99                 } else if (cnt != 1) {
 100                         sep = 1;
 101                         (void)ex_printf(EXCOOKIE, " ");
 102                 }
 103                 (void)ex_printf(EXCOOKIE, "%s", FILENAME(tsp->frp));
 104                 ++cnt;
 105         }
 106         (void)ex_printf(EXCOOKIE, "\n");
 107         return (0);
 108 }