lib/libcurses/clear.c

   1 /*      $NetBSD: clear.c,v 1.13 2003/08/07 16:44:19 agc Exp $   */
   2
   3 /*
   4  * Copyright (c) 1981, 1993, 1994
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #ifndef lint
  34 #if 0
  35 static char sccsid[] = "@(#)clear.c     8.2 (Berkeley) 5/4/94";
  36 #else
  37 __RCSID("$NetBSD: clear.c,v 1.13 2003/08/07 16:44:19 agc Exp $");
  38 #endif
  39 #endif                          /* not lint */
  40
  41 #include "curses.h"
  42 #include "curses_private.h"
  43
  44 #ifndef _CURSES_USE_MACROS
  45
  46 /*
  47  * clear --
  48  *      Clear stdscr
  49  */
  50 int
  51 clear(void)
  52 {
  53         return wclear(_cursesi_screen->stdscr);
  54 }
  55
  56 #endif
  57
  58 /*
  59  * wclear --
  60  *      Clear the window.
  61  */
  62 int
  63 wclear(WINDOW *win)
  64 {
  65         if (werase(win) == OK) {
  66                 win->flags |= __CLEAROK;
  67                 return (OK);
  68         }
  69         return (ERR);
  70 }