1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
/* $OpenBSD: ex_visual.c,v 1.5 2001/01/29 01:58:45 niklas Exp $ */
/*-
* Copyright (c) 1992, 1993, 1994
* The Regents of the University of California. All rights reserved.
* Copyright (c) 1992, 1993, 1994, 1995, 1996
* Keith Bostic. All rights reserved.
*
* See the LICENSE file for redistribution information.
*/
#include "config.h"
#ifndef lint
static const char sccsid[] = "@(#)ex_visual.c 10.13 (Berkeley) 6/28/96";
#endif /* not lint */
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/time.h>
#include <bitstring.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "../common/common.h"
#include "../vi/vi.h"
/*
* ex_visual -- :[line] vi[sual] [^-.+] [window_size] [flags]
* Switch to visual mode.
*
* PUBLIC: int ex_visual __P((SCR *, EXCMD *));
*/
int
ex_visual(sp, cmdp)
SCR *sp;
EXCMD *cmdp;
{
SCR *tsp;
size_t len;
int pos;
char buf[256];
/* If open option off, disallow visual command. */
if (!O_ISSET(sp, O_OPEN)) {
msgq(sp, M_ERR,
"175|The visual command requires that the open option be set");
return (1);
}
/* Move to the address. */
sp->lno = cmdp->addr1.lno == 0 ? 1 : cmdp->addr1.lno;
/*
* Push a command based on the line position flags. If no
* flag specified, the line goes at the top of the screen.
*/
switch (FL_ISSET(cmdp->iflags,
E_C_CARAT | E_C_DASH | E_C_DOT | E_C_PLUS)) {
case E_C_CARAT:
pos = '^';
break;
case E_C_DASH:
pos = '-';
break;
case E_C_DOT:
pos = '.';
break;
case E_C_PLUS:
pos = '+';
break;
default:
sp->frp->lno = sp->lno;
sp->frp->cno = 0;
(void)nonblank(sp, sp->lno, &sp->cno);
F_SET(sp->frp, FR_CURSORSET);
goto nopush;
}
if (FL_ISSET(cmdp->iflags, E_C_COUNT))
len = snprintf(buf, sizeof(buf),
"%luz%c%lu", sp->lno, pos, cmdp->count);
else
len = snprintf(buf, sizeof(buf), "%luz%c", sp->lno, pos);
if (len >= sizeof(buf))
len = sizeof(buf) - 1;
(void)v_event_push(sp, NULL, buf, len, CH_NOMAP | CH_QUOTED);
/*
* !!!
* Historically, if no line address was specified, the [p#l] flags
* caused the cursor to be moved to the last line of the file, which
* was then positioned as described above. This seems useless, so
* I haven't implemented it.
*/
switch (FL_ISSET(cmdp->iflags, E_C_HASH | E_C_LIST | E_C_PRINT)) {
case E_C_HASH:
O_SET(sp, O_NUMBER);
break;
case E_C_LIST:
O_SET(sp, O_LIST);
break;
case E_C_PRINT:
break;
}
nopush: /*
* !!!
* You can call the visual part of the editor from within an ex
* global command.
*
* XXX
* Historically, undoing a visual session was a single undo command,
* i.e. you could undo all of the changes you made in visual mode.
* We don't get this right; I'm waiting for the new logging code to
* be available.
*
* It's explicit, don't have to wait for the user, unless there's
* already a reason to wait.
*/
if (!F_ISSET(sp, SC_SCR_EXWROTE))
F_SET(sp, SC_EX_WAIT_NO);
if (F_ISSET(sp, SC_EX_GLOBAL)) {
/*
* When the vi screen(s) exit, we don't want to lose our hold
* on this screen or this file, otherwise we're going to fail
* fairly spectacularly.
*/
++sp->refcnt;
++sp->ep->refcnt;
/*
* Fake up a screen pointer -- vi doesn't get to change our
* underlying file, regardless.
*/
tsp = sp;
if (vi(&tsp))
return (1);
/*
* !!!
* Historically, if the user exited the vi screen(s) using an
* ex quit command (e.g. :wq, :q) ex/vi exited, it was only if
* they exited vi using the Q command that ex continued. Some
* early versions of nvi continued in ex regardless, but users
* didn't like the semantic.
*
* Reset the screen.
*/
if (ex_init(sp))
return (1);
/* Move out of the vi screen. */
(void)ex_puts(sp, "\n");
} else {
F_CLR(sp, SC_EX | SC_SCR_EX);
F_SET(sp, SC_VI);
}
return (0);
}
|
