gno/lib/libcurses/insertln.c

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1997-10-01 02:57:29 +00:00
/*
* Copyright (c) 1981, 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[] = "@(#)insertln.c 8.2 (Berkeley) 5/4/94";
#endif /* not lint */
#include <string.h>
#include "curses.h"
/*
* winsertln --
* Do an insert-line on the window, leaving (cury, curx) unchanged.
*/
int
winsertln(WINDOW *win)
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{
register int y, i;
register __LINE *temp;
#ifdef DEBUG
__CTRACE("insertln: (%0.2o)\n", win);
#endif
if (win->orig == NULL)
temp = win->lines[win->maxy - 1];
for (y = win->maxy - 1; y > (int) win->cury; --y) {
win->lines[y]->flags &= ~__ISPASTEOL;
win->lines[y - 1]->flags &= ~__ISPASTEOL;
if (win->orig == NULL)
win->lines[y] = win->lines[y - 1];
else
(void)memcpy(win->lines[y]->line,
win->lines[y - 1]->line,
win->maxx * __LDATASIZE);
__touchline(win, y, 0, win->maxx - 1, 0);
}
if (win->orig == NULL)
win->lines[y] = temp;
else
temp = win->lines[y];
for(i = 0; i < win->maxx; i++) {
temp->line[i].ch = ' ';
temp->line[i].attr = 0;
}
__touchline(win, y, 0, win->maxx - 1, 0);
if (win->orig == NULL)
__id_subwins(win);
return (OK);
}