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path: root/usr.bin/vi/vi/v_join.c
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/*-
 * Copyright (c) 1992, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
static char sccsid[] = "@(#)v_join.c	8.5 (Berkeley) 3/8/94";
#endif /* not lint */

#include <sys/types.h>
#include <queue.h>
#include <sys/time.h>

#include <bitstring.h>
#include <limits.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <termios.h>

#include <db.h>
#include <regex.h>

#include "vi.h"
#include "excmd.h"
#include "vcmd.h"

/*
 * v_join -- [count]J
 *	Join lines together.
 */
int
v_join(sp, ep, vp)
	SCR *sp;
	EXF *ep;
	VICMDARG *vp;
{
	EXCMDARG cmd;
	int lno;

	/*
	 * YASC.
	 * The general rule is that '#J' joins # lines, counting the current
	 * line.  However, 'J' and '1J' are the same as '2J', i.e. join the
	 * current and next lines.  This doesn't map well into the ex command
	 * (which takes two line numbers), so we handle it here.  Note that
	 * we never test for EOF -- historically going past the end of file
	 * worked just fine.
	 */
	lno = vp->m_start.lno + 1;
	if (F_ISSET(vp, VC_C1SET) && vp->count > 2)
		lno = vp->m_start.lno + (vp->count - 1);

	SETCMDARG(cmd, C_JOIN, 2, vp->m_start.lno, lno, 0, NULL);
	return (sp->s_ex_cmd(sp, ep, &cmd, &vp->m_final));
}