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insertln.c revision 1.1 
      1 /*
      2  * Copyright (c) 1981 Regents of the University of California.
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  */
     33 
     34 #ifndef lint
     35 static char sccsid[] = "@(#)insertln.c	5.4 (Berkeley) 6/1/90";
     36 #endif /* not lint */
     37 
     38 # include	"curses.ext"
     39 
     40 /*
     41  *	This routine performs an insert-line on the window, leaving
     42  * (_cury,_curx) unchanged.
     43  *
     44  */
     45 winsertln(win)
     46 reg WINDOW	*win; {
     47 
     48 	reg char	*temp;
     49 	reg int		y;
     50 	reg char	*end;
     51 	reg int		x;
     52 
     53 #ifdef	DEBUG
     54 	fprintf(outf, "INSERTLN(%0.2o)\n", win);
     55 #endif
     56 	if (win->_orig == NULL)
     57 		temp = win->_y[win->_maxy - 1];
     58 	for (y = win->_maxy - 1; y > win->_cury; --y) {
     59 		if (win->_orig == NULL)
     60 			win->_y[y] = win->_y[y - 1];
     61 		else
     62 			bcopy(win->_y[y - 1], win->_y[y], win->_maxx);
     63 		touchline(win, y, 0, win->_maxx - 1);
     64 	}
     65 	if (win->_orig == NULL)
     66 		win->_y[y] = temp;
     67 	else
     68 		temp = win->_y[y];
     69 	for (end = &temp[win->_maxx]; temp < end; )
     70 		*temp++ = ' ';
     71 	touchline(win, y, 0, win->_maxx - 1);
     72 	if (win->_orig == NULL)
     73 		_id_subwins(win);
     74 }
     75