usr/src/ucblib/libcurses/insertln.c

   1 /*
   2  * Copyright 2001 Sun Microsystems, Inc.  All rights reserved.
   3  * Use is subject to license terms.
   4  */
   5
   6 /*      Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T     */
   7 /*        All Rights Reserved   */
   8
   9 /*
  10  * Copyright (c) 1980 Regents of the University of California.
  11  * All rights reserved.  The Berkeley software License Agreement
  12  * specifies the terms and conditions for redistribution.
  13  */
  14
  15 #pragma ident   "%Z%%M% %I%     %E% SMI"
  16
  17 /*LINTLIBRARY*/
  18
  19 #ifndef lint
  20 static char
  21 sccsid[] = "@(#)insertln.c 1.6 88/02/08 SMI"; /* from UCB 5.1 85/06/07 */
  22 #endif /* not lint */
  23
  24 #include        "curses.ext"
  25 #include        <string.h>
  26
  27 /*
  28  *      This routine performs an insert-line on the window, leaving
  29  * (_cury,_curx) unchanged.
  30  */
  31
  32 int
  33 winsertln(WINDOW *win)
  34 {
  35         char    *temp;
  36         int     y;
  37         char    *end;
  38
  39 #ifdef  DEBUG
  40         fprintf(outf, "INSERTLN(%0.2o)\n", win);
  41 #endif
  42         if (win->_orig == NULL)
  43                 temp = win->_y[win->_maxy - 1];
  44         for (y = win->_maxy - 1; y > win->_cury; --y) {
  45                 if (win->_orig == NULL)
  46                         win->_y[y] = win->_y[y - 1];
  47                 else
  48                         (void) memmove(win->_y[y], win->_y[y-1], win->_maxx);
  49                 (void) touchline(win, y, 0, win->_maxx - 1);
  50         }
  51         if (win->_orig == NULL)
  52                 win->_y[y] = temp;
  53         else
  54                 temp = win->_y[y];
  55         for (end = &temp[win->_maxx]; temp < end; )
  56                 *temp++ = ' ';
  57         (void) touchline(win, y, 0, win->_maxx - 1);
  58         if (win->_orig == NULL)
  59                 _id_subwins(win);
  60         return (OK);
  61 }