4.4BSD/usr/src/contrib/nvi/nvi/svi/svi_confirm.c

/*-
 * Copyright (c) 1992, 1993
 *	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[] = "@(#)svi_confirm.c	8.1 (Berkeley) 6/9/93";
#endif /* not lint */

#include <sys/types.h>

#include <curses.h>

#include "vi.h"
#include "svi_screen.h"

#define	CONFIRMCHAR	'y'		/* Make change character. */
#define	QUITCHAR	'q'		/* Quit character. */

enum confirmation
svi_confirm(sp, ep, fp, tp)
	SCR *sp;
	EXF *ep;
	MARK *fp, *tp;
{
	size_t oldy, oldx;
	int rval;

	/*
	 * Refresh the cursor first -- then won't have to set either
	 * S_UPDATE_MODE to keep refresh from erasing the mode line
	 * or S_CUR_INVALID because we sneaked the cursor off somewhere
	 * else.
	 */
	sp->lno = fp->lno;
	sp->cno = fp->cno;
	if (svi_refresh(sp, ep))
		rval = QUIT;

	getyx(stdscr, oldy, oldx);
	MOVE(sp, INFOLINE(sp), 0);
	clrtoeol();
#define	CSTRING	"confirm? [ynq]"
	ADDNSTR(CSTRING, sizeof(CSTRING) - 1);
	MOVEA(sp, oldy, oldx);
	refresh();

	switch (term_key(sp, 0)) {
	case CONFIRMCHAR:
		return (YES);
	case QUITCHAR:
		return (QUIT);
	default:
		return (NO);
	}
	/* NOTREACHED */
}