lib/libcurses/insch.c

1.1      cgd /*
1.1      cgd  * Copyright (c) 1981 Regents of the University of California.
1.1      cgd  * All rights reserved.
1.1      cgd  *
1.1      cgd  * Redistribution and use in source and binary forms, with or without
1.1      cgd  * modification, are permitted provided that the following conditions
1.1      cgd  * are met:
1.1      cgd  * 1. Redistributions of source code must retain the above copyright
1.1      cgd  *    notice, this list of conditions and the following disclaimer.
1.1      cgd  * 2. Redistributions in binary form must reproduce the above copyright
1.1      cgd  *    notice, this list of conditions and the following disclaimer in the
1.1      cgd  *    documentation and/or other materials provided with the distribution.
1.1      cgd  * 3. All advertising materials mentioning features or use of this software
1.1      cgd  *    must display the following acknowledgement:
1.1      cgd  *	This product includes software developed by the University of
1.1      cgd  *	California, Berkeley and its contributors.
1.1      cgd  * 4. Neither the name of the University nor the names of its contributors
1.1      cgd  *    may be used to endorse or promote products derived from this software
1.1      cgd  *    without specific prior written permission.
1.1      cgd  *
1.1      cgd  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
1.1      cgd  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1.1      cgd  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1.1      cgd  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
1.1      cgd  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
1.1      cgd  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
1.1      cgd  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1.1      cgd  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
1.1      cgd  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
1.1      cgd  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
1.1      cgd  * SUCH DAMAGE.
1.1      cgd  */
1.1      cgd
1.1      cgd #ifndef lint
1.3  mycroft /*static char sccsid[] = "from: @(#)insch.c	5.4 (Berkeley) 6/1/90";*/
1.3  mycroft static char rcsid[] = "$Id: insch.c,v 1.3 1993/08/01 18:35:36 mycroft Exp $";
1.1      cgd #endif /* not lint */
1.1      cgd
1.1      cgd # include	"curses.ext"
1.1      cgd
1.1      cgd /*
1.1      cgd  *	This routine performs an insert-char on the line, leaving
1.1      cgd  * (_cury,_curx) unchanged.
1.1      cgd  *
1.1      cgd  */
1.1      cgd winsch(win, c)
1.1      cgd reg WINDOW	*win;
1.2      alm char c; {
1.1      cgd
1.2      alm 	reg chtype      *temp1, *temp2;
1.2      alm 	reg chtype      *end;
1.1      cgd
1.1      cgd 	end = &win->_y[win->_cury][win->_curx];
1.1      cgd 	temp1 = &win->_y[win->_cury][win->_maxx - 1];
1.1      cgd 	temp2 = temp1 - 1;
1.1      cgd 	while (temp1 > end)
1.1      cgd 		*temp1-- = *temp2--;
1.2      alm 	*temp1 = (unsigned char) c;
1.1      cgd 	touchline(win, win->_cury, win->_curx, win->_maxx - 1);
1.1      cgd 	if (win->_cury == LINES - 1 && win->_y[LINES-1][COLS-1] != ' ')
1.1      cgd 		if (win->_scroll) {
1.1      cgd 			wrefresh(win);
1.1      cgd 			scroll(win);
1.1      cgd 			win->_cury--;
1.1      cgd 		}
1.1      cgd 		else
1.1      cgd 			return ERR;
1.1      cgd 	return OK;
1.1      cgd }