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/* $OpenBSD: wwdelline.c,v 1.3 1997/02/25 00:04:47 downsj Exp $ */
/* $NetBSD: wwdelline.c,v 1.3 1995/09/28 10:35:24 tls Exp $ */
/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Edward Wang at The University of California, Berkeley.
*
* 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
#if 0
static char sccsid[] = "@(#)wwdelline.c 8.1 (Berkeley) 6/6/93";
#else
static char rcsid[] = "$OpenBSD: wwdelline.c,v 1.3 1997/02/25 00:04:47 downsj Exp $";
#endif
#endif /* not lint */
#include "ww.h"
wwdelline(w, row)
register struct ww *w;
int row;
{
register i;
register union ww_char **cpp, **cqq;
register union ww_char *cp;
int row1, row2;
char deleted;
int visible;
/*
* Scroll first.
*/
if ((row1 = row) < w->ww_i.t) {
row1 = w->ww_i.t;
}
if ((row2 = w->ww_b.b) > w->ww_i.b) {
row2 = w->ww_i.b;
visible = 0;
} else
visible = 1;
deleted = wwscroll1(w, row1, row2, 1, visible);
/*
* Fix the buffer.
* But leave clearing the last line for wwclreol().
*/
cpp = &w->ww_buf[row];
cqq = cpp + 1;
cp = *cpp;
for (i = w->ww_b.b - row; --i > 0;)
*cpp++ = *cqq++;
*cpp = cp;
/*
* Now clear the last line.
*/
if (visible)
wwclreol1(w, w->ww_b.b - 1, w->ww_b.l, deleted);
else {
cp += w->ww_b.l;
for (i = w->ww_b.nc; --i >= 0;)
cp++->c_w = ' ';
}
}
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