137 lines
3.8 KiB
C
137 lines
3.8 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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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)v_xchar.c 8.10 (Berkeley) 8/17/94";
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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 <signal.h>
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#include <stdio.h>
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#include <termios.h>
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#include "compat.h"
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#include <db.h>
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#include <regex.h>
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#include "vi.h"
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#include "vcmd.h"
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/*
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* v_xchar -- [count]x
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* Deletes the character(s) on which the cursor sits.
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*/
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int
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v_xchar(sp, ep, vp)
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SCR *sp;
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EXF *ep;
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VICMDARG *vp;
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{
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recno_t lno;
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size_t len;
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if (file_gline(sp, ep, vp->m_start.lno, &len) == NULL) {
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if (file_lline(sp, ep, &lno))
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return (1);
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if (lno == 0)
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goto nodel;
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GETLINE_ERR(sp, vp->m_start.lno);
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return (1);
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}
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if (len == 0) {
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nodel: msgq(sp, M_BERR, "No characters to delete");
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return (1);
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}
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/*
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* Delete from the cursor toward the end of line, w/o moving the
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* cursor.
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*
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* !!!
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* Note, "2x" at EOL isn't the same as "xx" because the left movement
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* of the cursor as part of the 'x' command isn't taken into account.
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* Historically correct.
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*/
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if (F_ISSET(vp, VC_C1SET))
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vp->m_stop.cno += vp->count - 1;
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if (vp->m_stop.cno >= len - 1) {
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vp->m_stop.cno = len - 1;
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vp->m_final.cno = vp->m_start.cno ? vp->m_start.cno - 1 : 0;
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} else
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vp->m_final.cno = vp->m_start.cno;
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if (cut(sp, ep,
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F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL,
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&vp->m_start, &vp->m_stop, 0))
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return (1);
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return (delete(sp, ep, &vp->m_start, &vp->m_stop, 0));
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}
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/*
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* v_Xchar -- [count]X
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* Deletes the character(s) immediately before the current cursor
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* position.
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*/
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int
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v_Xchar(sp, ep, vp)
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SCR *sp;
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EXF *ep;
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VICMDARG *vp;
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{
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u_long cnt;
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if (vp->m_start.cno == 0) {
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v_sol(sp);
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return (1);
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}
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cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1;
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if (cnt >= vp->m_start.cno)
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vp->m_start.cno = 0;
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else
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vp->m_start.cno -= cnt;
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--vp->m_stop.cno;
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vp->m_final.cno = vp->m_start.cno;
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if (cut(sp, ep,
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F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL,
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&vp->m_start, &vp->m_stop, 0))
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return (1);
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return (delete(sp, ep, &vp->m_start, &vp->m_stop, 0));
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}
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