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insch.c revision 1.1.1.2
      1      1.1  cgd /*
      2  1.1.1.2  cgd  * Copyright (c) 1981, 1993, 1994
      3  1.1.1.2  cgd  *	The Regents of the University of California.  All rights reserved.
      4      1.1  cgd  *
      5      1.1  cgd  * Redistribution and use in source and binary forms, with or without
      6      1.1  cgd  * modification, are permitted provided that the following conditions
      7      1.1  cgd  * are met:
      8      1.1  cgd  * 1. Redistributions of source code must retain the above copyright
      9      1.1  cgd  *    notice, this list of conditions and the following disclaimer.
     10      1.1  cgd  * 2. Redistributions in binary form must reproduce the above copyright
     11      1.1  cgd  *    notice, this list of conditions and the following disclaimer in the
     12      1.1  cgd  *    documentation and/or other materials provided with the distribution.
     13      1.1  cgd  * 3. All advertising materials mentioning features or use of this software
     14      1.1  cgd  *    must display the following acknowledgement:
     15      1.1  cgd  *	This product includes software developed by the University of
     16      1.1  cgd  *	California, Berkeley and its contributors.
     17      1.1  cgd  * 4. Neither the name of the University nor the names of its contributors
     18      1.1  cgd  *    may be used to endorse or promote products derived from this software
     19      1.1  cgd  *    without specific prior written permission.
     20      1.1  cgd  *
     21      1.1  cgd  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22      1.1  cgd  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23      1.1  cgd  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24      1.1  cgd  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25      1.1  cgd  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26      1.1  cgd  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27      1.1  cgd  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28      1.1  cgd  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29      1.1  cgd  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30      1.1  cgd  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31      1.1  cgd  * SUCH DAMAGE.
     32      1.1  cgd  */
     33      1.1  cgd 
     34      1.1  cgd #ifndef lint
     35  1.1.1.2  cgd static char sccsid[] = "@(#)insch.c	8.2 (Berkeley) 5/4/94";
     36  1.1.1.2  cgd #endif	/* not lint */
     37      1.1  cgd 
     38  1.1.1.2  cgd #include <string.h>
     39  1.1.1.2  cgd 
     40  1.1.1.2  cgd #include "curses.h"
     41      1.1  cgd 
     42      1.1  cgd /*
     43  1.1.1.2  cgd  * winsch --
     44  1.1.1.2  cgd  *	Do an insert-char on the line, leaving (cury, curx) unchanged.
     45      1.1  cgd  */
     46  1.1.1.2  cgd int
     47  1.1.1.2  cgd winsch(win, ch)
     48  1.1.1.2  cgd 	register WINDOW *win;
     49  1.1.1.2  cgd 	int ch;
     50  1.1.1.2  cgd {
     51      1.1  cgd 
     52  1.1.1.2  cgd 	register __LDATA *end, *temp1, *temp2;
     53      1.1  cgd 
     54  1.1.1.2  cgd 	end = &win->lines[win->cury]->line[win->curx];
     55  1.1.1.2  cgd 	temp1 = &win->lines[win->cury]->line[win->maxx - 1];
     56      1.1  cgd 	temp2 = temp1 - 1;
     57  1.1.1.2  cgd 	while (temp1 > end) {
     58  1.1.1.2  cgd 		(void)memcpy(temp1, temp2, sizeof(__LDATA));
     59  1.1.1.2  cgd 		temp1--, temp2--;
     60  1.1.1.2  cgd 	}
     61  1.1.1.2  cgd 	temp1->ch = ch;
     62  1.1.1.2  cgd 	temp1->attr &= ~__STANDOUT;
     63  1.1.1.2  cgd 	__touchline(win, win->cury, win->curx, win->maxx - 1, 0);
     64  1.1.1.2  cgd 	if (win->cury == LINES - 1 &&
     65  1.1.1.2  cgd 	    (win->lines[LINES - 1]->line[COLS - 1].ch != ' ' ||
     66  1.1.1.2  cgd 	    win->lines[LINES -1]->line[COLS - 1].attr != 0))
     67  1.1.1.2  cgd 		if (win->flags & __SCROLLOK) {
     68      1.1  cgd 			wrefresh(win);
     69      1.1  cgd 			scroll(win);
     70  1.1.1.2  cgd 			win->cury--;
     71  1.1.1.2  cgd 		} else
     72  1.1.1.2  cgd 			return (ERR);
     73  1.1.1.2  cgd 	return (OK);
     74      1.1  cgd }
     75