NetBSD/lib/libcurses/delch.c

148 lines
3.8 KiB
C

/* $NetBSD: delch.c,v 1.22 2009/07/22 16:57:14 roy Exp $ */
/*
* 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. 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.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)delch.c 8.2 (Berkeley) 5/4/94";
#else
__RCSID("$NetBSD: delch.c,v 1.22 2009/07/22 16:57:14 roy Exp $");
#endif
#endif /* not lint */
#include <string.h>
#include <stdlib.h>
#include "curses.h"
#include "curses_private.h"
#ifndef _CURSES_USE_MACROS
/*
* delch --
* Do a delete-char on the line, leaving (cury, curx) unchanged.
*/
int
delch(void)
{
return wdelch(stdscr);
}
/*
* mvdelch --
* Do a delete-char on the line at (y, x) on stdscr.
*/
int
mvdelch(int y, int x)
{
return mvwdelch(stdscr, y, x);
}
/*
* mvwdelch --
* Do a delete-char on the line at (y, x) of the given window.
*/
int
mvwdelch(WINDOW *win, int y, int x)
{
if (wmove(win, y, x) == ERR)
return ERR;
return wdelch(win);
}
#endif
/*
* wdelch --
* Do a delete-char on the line, leaving (cury, curx) unchanged.
*/
int
wdelch(WINDOW *win)
{
__LDATA *end, *temp1, *temp2;
#ifndef HAVE_WCHAR
end = &win->alines[win->cury]->line[win->maxx - 1];
temp1 = &win->alines[win->cury]->line[win->curx];
temp2 = temp1 + 1;
while (temp1 < end) {
(void) memcpy(temp1, temp2, sizeof(__LDATA));
temp1++, temp2++;
}
temp1->ch = win->bch;
if (__using_color && win != curscr)
temp1->attr = win->battr & __COLOR;
else
temp1->attr = 0;
__touchline(win, (int) win->cury, (int) win->curx, (int) win->maxx - 1);
return (OK);
#else
int cw, sx;
nschar_t *np, *tnp;
end = &win->alines[win->cury]->line[win->maxx - 1];
sx = win->curx;
temp1 = &win->alines[win->cury]->line[win->curx];
cw = WCOL( *temp1 );
if ( cw < 0 ) {
temp1 += cw;
sx += cw;
cw = WCOL( *temp1 );
}
np = temp1->nsp;
if (np) {
while ( np ) {
tnp = np->next;
free( np );
np = tnp;
}
temp1->nsp = NULL;
}
if ( sx + cw < win->maxx ) {
temp2 = temp1 + cw;
while ( temp1 < end - ( cw - 1 )) {
( void )memcpy( temp1, temp2, sizeof( __LDATA ));
temp1++, temp2++;
}
}
while ( temp1 <= end ) {
temp1->ch = ( wchar_t )btowc(( int ) win->bch );
temp1->attr = 0;
if (_cursesi_copy_nsp(win->bnsp, temp1) == ERR)
return ERR;
SET_WCOL(*temp1, 1);
temp1++;
}
__touchline(win, (int) win->cury, sx, (int) win->maxx - 1);
return (OK);
#endif /* HAVE_WCHAR */
}