vi/v_init.c

   1 /*-
   2  * Copyright (c) 1992, 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: v_init.c,v 10.9 2001/06/25 15:19:31 skimo Exp $ (Berkeley) $Date: 2001/06/25 15:19:31 $";
  14 #endif /* not lint */
  15
  16 #include <sys/types.h>
  17 #include <sys/queue.h>
  18 #include <sys/time.h>
  19
  20 #include <bitstring.h>
  21 #include <errno.h>
  22 #include <limits.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26
  27 #include "../common/common.h"
  28 #include "vi.h"
  29
  30 /*
  31  * v_screen_copy --
  32  *      Copy vi screen.
  33  *
  34  * PUBLIC: int v_screen_copy __P((SCR *, SCR *));
  35  */
  36 int
  37 v_screen_copy(SCR *orig, SCR *sp)
  38 {
  39         VI_PRIVATE *ovip, *nvip;
  40
  41         /* Create the private vi structure. */
  42         CALLOC_RET(orig, nvip, VI_PRIVATE *, 1, sizeof(VI_PRIVATE));
  43         sp->vi_private = nvip;
  44
  45         /* Invalidate the line size cache. */
  46         VI_SCR_CFLUSH(nvip);
  47
  48         if (orig == NULL) {
  49                 nvip->csearchdir = CNOTSET;
  50         } else {
  51                 ovip = VIP(orig);
  52
  53                 /* User can replay the last input, but nothing else. */
  54                 if (ovip->rep_len != 0) {
  55                         MALLOC_RET(orig, nvip->rep, EVENT *, ovip->rep_len);
  56                         memmove(nvip->rep, ovip->rep, ovip->rep_len);
  57                         nvip->rep_len = ovip->rep_len;
  58                 }
  59
  60                 /* Copy the paragraph/section information. */
  61                 if (ovip->ps != NULL && (nvip->ps =
  62                     v_strdup(sp, ovip->ps, strlen(ovip->ps))) == NULL)
  63                         return (1);
  64
  65                 nvip->lastckey = ovip->lastckey;
  66                 nvip->csearchdir = ovip->csearchdir;
  67
  68                 nvip->srows = ovip->srows;
  69         }
  70         return (0);
  71 }
  72
  73 /*
  74  * v_screen_end --
  75  *      End a vi screen.
  76  *
  77  * PUBLIC: int v_screen_end __P((SCR *));
  78  */
  79 int
  80 v_screen_end(SCR *sp)
  81 {
  82         VI_PRIVATE *vip;
  83
  84         if ((vip = VIP(sp)) == NULL)
  85                 return (0);
  86         if (vip->keyw != NULL)
  87                 free(vip->keyw);
  88         if (vip->rep != NULL)
  89                 free(vip->rep);
  90         if (vip->ps != NULL)
  91                 free(vip->ps);
  92
  93         if (HMAP != NULL)
  94                 free(HMAP);
  95
  96         free(vip);
  97         sp->vi_private = NULL;
  98
  99         return (0);
 100 }
 101
 102 /*
 103  * v_optchange --
 104  *      Handle change of options for vi.
 105  *
 106  * PUBLIC: int v_optchange __P((SCR *, int, char *, u_long *));
 107  */
 108 int
 109 v_optchange(SCR *sp, int offset, char *str, u_long *valp)
 110 {
 111         switch (offset) {
 112         case O_PARAGRAPHS:
 113                 return (v_buildps(sp, str, O_STR(sp, O_SECTIONS)));
 114         case O_SECTIONS:
 115                 return (v_buildps(sp, O_STR(sp, O_PARAGRAPHS), str));
 116         case O_WINDOW:
 117                 return (vs_crel(sp, *valp));
 118         }
 119         return (0);
 120 }