GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/vi/build/../vi/v_right.c Lines: 0 45 0.0 %
Date: 2017-11-13 Branches: 0 54 0.0 %

Line Branch Exec Source
1
/*	$OpenBSD: v_right.c,v 1.6 2014/11/12 04:28:41 bentley Exp $	*/
2
3
/*-
4
 * Copyright (c) 1992, 1993, 1994
5
 *	The Regents of the University of California.  All rights reserved.
6
 * Copyright (c) 1992, 1993, 1994, 1995, 1996
7
 *	Keith Bostic.  All rights reserved.
8
 *
9
 * See the LICENSE file for redistribution information.
10
 */
11
12
#include "config.h"
13
14
#include <sys/types.h>
15
#include <sys/queue.h>
16
#include <sys/time.h>
17
18
#include <bitstring.h>
19
#include <limits.h>
20
#include <stdio.h>
21
22
#include "../common/common.h"
23
#include "vi.h"
24
25
/*
26
 * v_right -- [count]' ', [count]l
27
 *	Move right by columns.
28
 *
29
 * PUBLIC: int v_right(SCR *, VICMD *);
30
 */
31
int
32
v_right(SCR *sp, VICMD *vp)
33
{
34
	size_t len;
35
	int isempty;
36
37
	if (db_eget(sp, vp->m_start.lno, NULL, &len, &isempty)) {
38
		if (isempty)
39
			goto eol;
40
		return (1);
41
	}
42
43
	/* It's always illegal to move right on empty lines. */
44
	if (len == 0) {
45
eol:		v_eol(sp, NULL);
46
		return (1);
47
	}
48
49
	/*
50
	 * Non-motion commands move to the end of the range.  Delete and
51
	 * yank stay at the start.  Ignore others.  Adjust the end of the
52
	 * range for motion commands.
53
	 *
54
	 * !!!
55
	 * Historically, "[cdsy]l" worked at the end of a line.  Also,
56
	 * EOL is a count sink.
57
	 */
58
	vp->m_stop.cno = vp->m_start.cno +
59
	    (F_ISSET(vp, VC_C1SET) ? vp->count : 1);
60
	if (vp->m_start.cno == len - 1 && !ISMOTION(vp)) {
61
		v_eol(sp, NULL);
62
		return (1);
63
	}
64
	if (vp->m_stop.cno >= len) {
65
		vp->m_stop.cno = len - 1;
66
		vp->m_final = ISMOTION(vp) ? vp->m_start : vp->m_stop;
67
	} else if (ISMOTION(vp)) {
68
		--vp->m_stop.cno;
69
		vp->m_final = vp->m_start;
70
	} else
71
		vp->m_final = vp->m_stop;
72
	return (0);
73
}
74
75
/*
76
 * v_dollar -- [count]$
77
 *	Move to the last column.
78
 *
79
 * PUBLIC: int v_dollar(SCR *, VICMD *);
80
 */
81
int
82
v_dollar(SCR *sp, VICMD *vp)
83
{
84
	size_t len;
85
	int isempty;
86
87
	/*
88
	 * !!!
89
	 * A count moves down count - 1 rows, so, "3$" is the same as "2j$".
90
	 */
91
	if ((F_ISSET(vp, VC_C1SET) ? vp->count : 1) != 1) {
92
		/*
93
		 * !!!
94
		 * Historically, if the $ is a motion, and deleting from
95
		 * at or before the first non-blank of the line, it's a
96
		 * line motion, and the line motion flag is set.
97
		 */
98
		vp->m_stop.cno = 0;
99
		if (nonblank(sp, vp->m_start.lno, &vp->m_stop.cno))
100
			return (1);
101
		if (ISMOTION(vp) && vp->m_start.cno <= vp->m_stop.cno)
102
			F_SET(vp, VM_LMODE);
103
104
		--vp->count;
105
		if (v_down(sp, vp))
106
			return (1);
107
	}
108
109
	/*
110
	 * !!!
111
	 * Historically, it was illegal to use $ as a motion command on
112
	 * an empty line.  Unfortunately, even though C was historically
113
	 * aliased to c$, it (and not c$) was special cased to work on
114
	 * empty lines.  Since we alias C to c$ too, we have a problem.
115
	 * To fix it, we let c$ go through, on the assumption that it's
116
	 * not a problem for it to work.
117
	 */
118
	if (db_eget(sp, vp->m_stop.lno, NULL, &len, &isempty)) {
119
		if (!isempty)
120
			return (1);
121
		len = 0;
122
	}
123
124
	if (len == 0) {
125
		if (ISMOTION(vp) && !ISCMD(vp->rkp, 'c')) {
126
			v_eol(sp, NULL);
127
			return (1);
128
		}
129
		return (0);
130
	}
131
132
	/*
133
	 * Non-motion commands move to the end of the range.  Delete
134
	 * and yank stay at the start.  Ignore others.
135
	 */
136
	vp->m_stop.cno = len ? len - 1 : 0;
137
	vp->m_final = ISMOTION(vp) ? vp->m_start : vp->m_stop;
138
	return (0);
139
}