v_put.c

早期freebsd实现

/*-
 * 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_put.c	8.8 (Berkeley) 3/8/94";
#endif /* not lint */

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

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

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

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

static void	inc_buf __P((SCR *, VICMDARG *));

/*
 * v_Put -- [buffer]P
 *	Insert the contents of the buffer before the cursor.
 */
int
v_Put(sp, ep, vp)
	SCR *sp;
	EXF *ep;
	VICMDARG *vp;
{
	if (F_ISSET(vp, VC_ISDOT))
		inc_buf(sp, vp);

	return (put(sp, ep, NULL, F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL,
	    &vp->m_start, &vp->m_final, 0));
}

/*
 * v_put -- [buffer]p
 *	Insert the contents of the buffer after the cursor.
 */
int
v_put(sp, ep, vp)
	SCR *sp;
	EXF *ep;
	VICMDARG *vp;
{
	if (F_ISSET(vp, VC_ISDOT))
		inc_buf(sp, vp);

	return (put(sp, ep, NULL, F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL,
	    &vp->m_start, &vp->m_final, 1));
}

/*
 * !!!
 * Historical whackadoo.  The dot command `puts' the numbered buffer
 * after the last one put.  For example, `"4p.' would put buffer #4
 * and buffer #5.  If the user continued to enter '.', the #9 buffer
 * would be repeatedly output.  This was not documented, and is a bit
 * tricky to reconstruct.  Historical versions of vi also dropped the
 * contents of the default buffer after each put, so after `"4p' the
 * default buffer would be empty.  This makes no sense to me, so we
 * don't bother.  Don't assume sequential order of numeric characters.
 *
 * And, if that weren't exciting enough, failed commands don't normally
 * set the dot command.  Well, boys and girls, an exception is that
 * the buffer increment gets done regardless of the success of the put.
 */
static void
inc_buf(sp, vp)
	SCR *sp;
	VICMDARG *vp;
{
	CHAR_T v;

	switch (vp->buffer) {
	case '1':
		v = '2';
		break;
	case '2':
		v = '3';
		break;
	case '3':
		v = '4';
		break;
	case '4':
		v = '5';
		break;
	case '5':
		v = '6';
		break;
	case '6':
		v = '7';
		break;
	case '7':
		v = '8';
		break;
	case '8':
		v = '9';
		break;
	default:
		return;
	}
	VIP(sp)->sdot.buffer = vp->buffer = v;
}