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 10.8 1996/03/30 13:47:10 bostic Exp $ (Berkeley) $Date: 1996/03/30 13:47:10 $";
  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(orig, sp)
  38         SCR *orig, *sp;
  39 {
  40         VI_PRIVATE *ovip, *nvip;
  41
  42         /* Create the private vi structure. */
  43         CALLOC_RET(orig, nvip, VI_PRIVATE *, 1, sizeof(VI_PRIVATE));
  44         sp->vi_private = nvip;
  45
  46         /* Invalidate the line size cache. */
  47         VI_SCR_CFLUSH(nvip);
  48
  49         if (orig == NULL) {
  50                 nvip->csearchdir = CNOTSET;
  51         } else {
  52                 ovip = VIP(orig);
  53
  54                 /* User can replay the last input, but nothing else. */
  55                 if (ovip->rep_len != 0) {
  56                         MALLOC_RET(orig, nvip->rep, EVENT *, ovip->rep_len);
  57                         memmove(nvip->rep, ovip->rep, ovip->rep_len);
  58                         nvip->rep_len = ovip->rep_len;
  59                 }
  60
  61                 /* Copy the paragraph/section information. */
  62                 if (ovip->ps != NULL && (nvip->ps =
  63                     v_strdup(sp, ovip->ps, strlen(ovip->ps))) == NULL)
  64                         return (1);
  65
  66                 nvip->lastckey = ovip->lastckey;
  67                 nvip->csearchdir = ovip->csearchdir;
  68
  69                 nvip->srows = ovip->srows;
  70         }
  71         return (0);
  72 }
  73
  74 /*
  75  * v_screen_end --
  76  *      End a vi screen.
  77  *
  78  * PUBLIC: int v_screen_end __P((SCR *));
  79  */
  80 int
  81 v_screen_end(sp)
  82         SCR *sp;
  83 {
  84         VI_PRIVATE *vip;
  85
  86         if ((vip = VIP(sp)) == NULL)
  87                 return (0);
  88         if (vip->keyw != NULL)
  89                 free(vip->keyw);
  90         if (vip->rep != NULL)
  91                 free(vip->rep);
  92         if (vip->ps != NULL)
  93                 free(vip->ps);
  94
  95         if (HMAP != NULL)
  96                 free(HMAP);
  97
  98         free(vip);
  99         sp->vi_private = NULL;
 100
 101         return (0);
 102 }
 103
 104 /*
 105  * v_optchange --
 106  *      Handle change of options for vi.
 107  *
 108  * PUBLIC: int v_optchange __P((SCR *, int, char *, u_long *));
 109  */
 110 int
 111 v_optchange(sp, offset, str, valp)
 112         SCR *sp;
 113         int offset;
 114         char *str;
 115         u_long *valp;
 116 {
 117         switch (offset) {
 118         case O_PARAGRAPHS:
 119                 return (v_buildps(sp, str, O_STR(sp, O_SECTIONS)));
 120         case O_SECTIONS:
 121                 return (v_buildps(sp, O_STR(sp, O_PARAGRAPHS), str));
 122         case O_WINDOW:
 123                 return (vs_crel(sp, *valp));
 124         }
 125         return (0);
 126 }