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/* $OpenBSD: v_right.c,v 1.6 2014/11/12 04:28:41 bentley Exp $ */ |
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/*- |
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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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#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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} |