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
13static const char sccsid[] = "@(#)v_init.c	10.8 (Berkeley) 3/30/96";
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 */
36int
37v_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 */
80int
81v_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 */
110int
111v_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}
127