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142 lines
3.1 KiB
C
142 lines
3.1 KiB
C
/*-
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* Copyright (c) 1992, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1992, 1993, 1994, 1995, 1996
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* Keith Bostic. All rights reserved.
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*
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* See the LICENSE file for redistribution information.
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*/
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#include "config.h"
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#ifndef lint
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static const char sccsid[] = "$Id: v_right.c,v 10.8 2001/06/25 15:19:34 skimo Exp $";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <sys/time.h>
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#include <bitstring.h>
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#include <limits.h>
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#include <stdio.h>
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#include "../common/common.h"
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#include "vi.h"
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/*
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* v_right -- [count]' ', [count]l
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* Move right by columns.
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*
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* PUBLIC: int v_right(SCR *, VICMD *);
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*/
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int
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v_right(SCR *sp, VICMD *vp)
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{
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size_t len;
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int isempty;
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if (db_eget(sp, vp->m_start.lno, NULL, &len, &isempty)) {
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if (isempty)
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goto eol;
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return (1);
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}
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/* It's always illegal to move right on empty lines. */
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if (len == 0) {
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eol: v_eol(sp, NULL);
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return (1);
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}
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/*
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* Non-motion commands move to the end of the range. Delete and
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* yank stay at the start. Ignore others. Adjust the end of the
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* range for motion commands.
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*
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* !!!
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* Historically, "[cdsy]l" worked at the end of a line. Also,
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* EOL is a count sink.
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*/
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vp->m_stop.cno = vp->m_start.cno +
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(F_ISSET(vp, VC_C1SET) ? vp->count : 1);
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if (vp->m_start.cno == len - 1 && !ISMOTION(vp)) {
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v_eol(sp, NULL);
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return (1);
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}
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if (vp->m_stop.cno >= len) {
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vp->m_stop.cno = len - 1;
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vp->m_final = ISMOTION(vp) ? vp->m_start : vp->m_stop;
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} else if (ISMOTION(vp)) {
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--vp->m_stop.cno;
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vp->m_final = vp->m_start;
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} else
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vp->m_final = vp->m_stop;
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return (0);
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}
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/*
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* v_dollar -- [count]$
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* Move to the last column.
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*
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* PUBLIC: int v_dollar(SCR *, VICMD *);
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*/
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int
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v_dollar(SCR *sp, VICMD *vp)
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{
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size_t len;
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int isempty;
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/*
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* !!!
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* A count moves down count - 1 rows, so, "3$" is the same as "2j$".
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*/
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if ((F_ISSET(vp, VC_C1SET) ? vp->count : 1) != 1) {
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/*
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* !!!
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* Historically, if the $ is a motion, and deleting from
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* at or before the first non-blank of the line, it's a
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* line motion, and the line motion flag is set.
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*/
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vp->m_stop.cno = 0;
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if (nonblank(sp, vp->m_start.lno, &vp->m_stop.cno))
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return (1);
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if (ISMOTION(vp) && vp->m_start.cno <= vp->m_stop.cno)
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F_SET(vp, VM_LMODE);
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--vp->count;
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if (v_down(sp, vp))
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return (1);
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}
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/*
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* !!!
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* Historically, it was illegal to use $ as a motion command on
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* an empty line. Unfortunately, even though C was historically
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* aliased to c$, it (and not c$) was special cased to work on
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* empty lines. Since we alias C to c$ too, we have a problem.
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* To fix it, we let c$ go through, on the assumption that it's
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* not a problem for it to work.
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*/
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if (db_eget(sp, vp->m_stop.lno, NULL, &len, &isempty)) {
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if (!isempty)
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return (1);
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len = 0;
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}
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if (len == 0) {
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if (ISMOTION(vp) && !ISCMD(vp->rkp, 'c')) {
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v_eol(sp, NULL);
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return (1);
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}
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return (0);
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}
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/*
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* Non-motion commands move to the end of the range. Delete
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* and yank stay at the start. Ignore others.
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*/
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vp->m_stop.cno = len ? len - 1 : 0;
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vp->m_final = ISMOTION(vp) ? vp->m_start : vp->m_stop;
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return (0);
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}
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