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/* $OpenBSD: v_right.c,v 1.3 2001/01/29 01:58:52 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[] = "@(#)v_right.c 10.7 (Berkeley) 3/6/96";
#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_right -- [count]' ', [count]l
* Move right by columns.
*
* PUBLIC: int v_right __P((SCR *, VICMD *));
*/
int
v_right(sp, vp)
SCR *sp;
VICMD *vp;
{
size_t len;
int isempty;
if (db_eget(sp, vp->m_start.lno, NULL, &len, &isempty)) {
if (isempty)
goto eol;
return (1);
}
/* It's always illegal to move right on empty lines. */
if (len == 0) {
eol: v_eol(sp, NULL);
return (1);
}
/*
* Non-motion commands move to the end of the range. Delete and
* yank stay at the start. Ignore others. Adjust the end of the
* range for motion commands.
*
* !!!
* Historically, "[cdsy]l" worked at the end of a line. Also,
* EOL is a count sink.
*/
vp->m_stop.cno = vp->m_start.cno +
(F_ISSET(vp, VC_C1SET) ? vp->count : 1);
if (vp->m_start.cno == len - 1 && !ISMOTION(vp)) {
v_eol(sp, NULL);
return (1);
}
if (vp->m_stop.cno >= len) {
vp->m_stop.cno = len - 1;
vp->m_final = ISMOTION(vp) ? vp->m_start : vp->m_stop;
} else if (ISMOTION(vp)) {
--vp->m_stop.cno;
vp->m_final = vp->m_start;
} else
vp->m_final = vp->m_stop;
return (0);
}
/*
* v_dollar -- [count]$
* Move to the last column.
*
* PUBLIC: int v_dollar __P((SCR *, VICMD *));
*/
int
v_dollar(sp, vp)
SCR *sp;
VICMD *vp;
{
size_t len;
int isempty;
/*
* !!!
* A count moves down count - 1 rows, so, "3$" is the same as "2j$".
*/
if ((F_ISSET(vp, VC_C1SET) ? vp->count : 1) != 1) {
/*
* !!!
* Historically, if the $ is a motion, and deleting from
* at or before the first non-blank of the line, it's a
* line motion, and the line motion flag is set.
*/
vp->m_stop.cno = 0;
if (nonblank(sp, vp->m_start.lno, &vp->m_stop.cno))
return (1);
if (ISMOTION(vp) && vp->m_start.cno <= vp->m_stop.cno)
F_SET(vp, VM_LMODE);
--vp->count;
if (v_down(sp, vp))
return (1);
}
/*
* !!!
* Historically, it was illegal to use $ as a motion command on
* an empty line. Unfortunately, even though C was historically
* aliased to c$, it (and not c$) was special cased to work on
* empty lines. Since we alias C to c$ too, we have a problem.
* To fix it, we let c$ go through, on the assumption that it's
* not a problem for it to work.
*/
if (db_eget(sp, vp->m_stop.lno, NULL, &len, &isempty)) {
if (!isempty)
return (1);
len = 0;
}
if (len == 0) {
if (ISMOTION(vp) && !ISCMD(vp->rkp, 'c')) {
v_eol(sp, NULL);
return (1);
}
return (0);
}
/*
* Non-motion commands move to the end of the range. Delete
* and yank stay at the start. Ignore others.
*/
vp->m_stop.cno = len ? len - 1 : 0;
vp->m_final = ISMOTION(vp) ? vp->m_start : vp->m_stop;
return (0);
}
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