/*	Copyright (c) 1990 UNIX System Laboratories, Inc.	*/
/*	Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T	*/
/*	  All Rights Reserved  	*/

/*	THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF     	*/
/*	UNIX System Laboratories, Inc.                     	*/
/*	The copyright notice above does not evidence any   	*/
/*	actual or intended publication of such source code.	*/

/*	Copyright (c) 1987, 1988 Microsoft Corporation	*/
/*	  All Rights Reserved	*/

/*	This Module contains Proprietary Information of Microsoft  */
/*	Corporation and should be treated as Confidential.	   */

#ident	"@(#)xcplxcurses:insch.c	1.1"

/*
 *	@(#) insch.c 1.1 90/03/30 lxcurses:insch.c
 */
# include	"ext.h"

/*
 *	This routine performs an insert-char on the line, leaving
 * (_cury,_curx) unchanged.
 *
 * @(#)insch.c	1.2 (Berkeley) 4/17/81
 */
winsch(win, c)
reg WINDOW	*win;
char		c; {

	reg char	*temp1, *temp2;
	reg char	*end;

	end = &win->_y[win->_cury][win->_curx];
	temp1 = &win->_y[win->_cury][win->_maxx - 1];
	temp2 = temp1 - 1;
	while (temp1 > end)
		*temp1-- = *temp2--;
	*temp1 = c;
	win->_lastch[win->_cury] = win->_maxx - 1;
	if (win->_firstch[win->_cury] == _NOCHANGE ||
	    win->_firstch[win->_cury] > win->_curx)
		win->_firstch[win->_cury] = win->_curx;
	if (win->_cury == LINES - 1 && win->_y[LINES-1][COLS-1] != ' ')
		if (win->_scroll) {
			wrefresh(win);
			scroll(win);
			win->_cury--;
		}
		else
			return ERR;
	return OK;
}
