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
|
/*-
* 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[] = "@(#)v_xchar.c 10.9 (Berkeley) 10/23/96";
#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 "../common/common.h"
#include "vi.h"
/*
* v_xchar -- [buffer] [count]x
* Deletes the character(s) on which the cursor sits.
*
* PUBLIC: int v_xchar __P((SCR *, VICMD *));
*/
int
v_xchar(sp, vp)
SCR *sp;
VICMD *vp;
{
size_t len;
int isempty;
/* Yes, this does not describe counts. Remember that the
* omission of such details also plagues other products'
* similar systems.
*/
vigor_maybe_wizard((F_ISSET(vp, VC_C1SET) ?
(vp->count > 33 ? 100 : vp->count * 3):
3),
"\"delete\"", "\"delete a character\"",
"\"delete a word\"", "\"delete a line\"", 0,
"\"To delete a character, you need to press the "
"delete character key. If you need to delete "
"several characters, press the delete character "
"key several times.\"", sp->gp);
if (db_eget(sp, vp->m_start.lno, NULL, &len, &isempty)) {
if (isempty)
goto nodel;
return (1);
}
if (len == 0) {
nodel: msgq(sp, M_BERR, "206|No characters to delete");
return (1);
}
/*
* Delete from the cursor toward the end of line, w/o moving the
* cursor.
*
* !!!
* Note, "2x" at EOL isn't the same as "xx" because the left movement
* of the cursor as part of the 'x' command isn't taken into account.
* Historically correct.
*/
if (F_ISSET(vp, VC_C1SET))
vp->m_stop.cno += vp->count - 1;
if (vp->m_stop.cno >= len - 1) {
vp->m_stop.cno = len - 1;
vp->m_final.cno = vp->m_start.cno ? vp->m_start.cno - 1 : 0;
} else
vp->m_final.cno = vp->m_start.cno;
if (cut(sp,
F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL,
&vp->m_start, &vp->m_stop, 0))
return (1);
return (del(sp, &vp->m_start, &vp->m_stop, 0));
}
/*
* v_Xchar -- [buffer] [count]X
* Deletes the character(s) immediately before the current cursor
* position.
*
* PUBLIC: int v_Xchar __P((SCR *, VICMD *));
*/
int
v_Xchar(sp, vp)
SCR *sp;
VICMD *vp;
{
u_long cnt;
if (vp->m_start.cno == 0) {
v_sol(sp);
return (1);
}
cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1;
if (cnt >= vp->m_start.cno)
vp->m_start.cno = 0;
else
vp->m_start.cno -= cnt;
--vp->m_stop.cno;
vp->m_final.cno = vp->m_start.cno;
if (cut(sp,
F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL,
&vp->m_start, &vp->m_stop, 0))
return (1);
return (del(sp, &vp->m_start, &vp->m_stop, 0));
}
|
