contrib/nvi2/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 10.10 2012/02/11 00:33:46 zy Exp $";
  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(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 match characters information. */
  61                 if (ovip->mcs != NULL && (nvip->mcs =
  62                     v_wstrdup(sp, ovip->mcs, STRLEN(ovip->mcs))) == NULL)
  63                         return (1);
  64
  65                 /* Copy the paragraph/section information. */
  66                 if (ovip->ps != NULL && (nvip->ps =
  67                     v_strdup(sp, ovip->ps, strlen(ovip->ps))) == NULL)
  68                         return (1);
  69
  70                 nvip->lastckey = ovip->lastckey;
  71                 nvip->csearchdir = ovip->csearchdir;
  72
  73                 nvip->srows = ovip->srows;
  74         }
  75         return (0);
  76 }
  77
  78 /*
  79  * v_screen_end --
  80  *      End a vi screen.
  81  *
  82  * PUBLIC: int v_screen_end(SCR *);
  83  */
  84 int
  85 v_screen_end(SCR *sp)
  86 {
  87         VI_PRIVATE *vip;
  88
  89         if ((vip = VIP(sp)) == NULL)
  90                 return (0);
  91         if (vip->keyw != NULL)
  92                 free(vip->keyw);
  93         if (vip->rep != NULL)
  94                 free(vip->rep);
  95         if (vip->mcs != NULL)
  96                 free(vip->mcs);
  97         if (vip->ps != NULL)
  98                 free(vip->ps);
  99
 100         if (HMAP != NULL)
 101                 free(HMAP);
 102
 103         free(vip);
 104         sp->vi_private = NULL;
 105
 106         return (0);
 107 }
 108
 109 /*
 110  * v_optchange --
 111  *      Handle change of options for vi.
 112  *
 113  * PUBLIC: int v_optchange(SCR *, int, char *, u_long *);
 114  */
 115 int
 116 v_optchange(SCR *sp, int offset, char *str, u_long *valp)
 117 {
 118         switch (offset) {
 119         case O_MATCHCHARS:
 120                 return (v_buildmcs(sp, str));
 121         case O_PARAGRAPHS:
 122                 return (v_buildps(sp, str, O_STR(sp, O_SECTIONS)));
 123         case O_SECTIONS:
 124                 return (v_buildps(sp, O_STR(sp, O_PARAGRAPHS), str));
 125         case O_WINDOW:
 126                 return (vs_crel(sp, *valp));
 127         }
 128         return (0);
 129 }