wdelch.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1997 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1988 AT&T */
/* All Rights Reserved */
/*
* University Copyright- Copyright (c) 1982, 1986, 1988
* The Regents of the University of California
* All Rights Reserved
*
* University Acknowledgment- Portions of this document are derived from
* software developed by the University of California, Berkeley, and its
* contributors.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*LINTLIBRARY*/
#include <sys/types.h>
#include "curses_inc.h"
/*
* This routine performs a delete-char on the line,
* leaving (_cury, _curx) unchanged.
*/
int
wdelch(WINDOW *win)
{
chtype *temp1, *temp2;
chtype *end;
int cury = win->_cury;
short curx = win->_curx;
chtype *cp;
int s;
end = &win->_y[cury][win->_maxx - 1];
temp2 = &win->_y[cury][curx + 1];
temp1 = temp2 - 1;
s = 1;
win->_nbyte = -1;
if (_scrmax > 1) {
if (ISMBIT(*temp1)) {
win->_insmode = TRUE;
if (_mbvalid(win) == ERR)
return (ERR);
curx = win->_curx;
temp1 = &win->_y[cury][curx];
}
if (ISMBIT(*end)) {
for (cp = end; cp >= temp1; --cp)
if (!ISCBIT(*cp))
break;
if (cp + _curs_scrwidth[TYPE(*cp)] > end+1)
end = cp - 1;
}
if (ISMBIT(*temp1))
s = _curs_scrwidth[TYPE(RBYTE(*temp1))];
end -= s - 1;
temp2 = &win->_y[cury][curx+s];
}
while (temp1 < end)
*temp1++ = *temp2++;
while (s--)
*temp1++ = win->_bkgd;
#ifdef _VR3_COMPAT_CODE
if (_y16update)
(*_y16update)(win, 1, win->_maxx - curx, cury, curx);
#endif /* _VR3_COMPAT_CODE */
win->_lastch[cury] = win->_maxx - 1;
if (win->_firstch[cury] > curx)
win->_firstch[cury] = curx;
win->_flags |= _WINCHANGED;
if (win->_sync)
wsyncup(win);
return (win->_immed ? wrefresh(win) : OK);
}