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      1 /*	$NetBSD: meta.c,v 1.11 2024/12/23 02:58:03 blymn Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998-2000 Brett Lymn
      5  *                         (blymn (at) baea.com.au, brett_lymn (at) yahoo.com.au)
      6  * All rights reserved.
      7  *
      8  * This code has been donated to The NetBSD Foundation by the Author.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  *
     29  *
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 __RCSID("$NetBSD: meta.c,v 1.11 2024/12/23 02:58:03 blymn Exp $");
     35 #endif				/* not lint */
     36 
     37 #include "curses.h"
     38 #include "curses_private.h"
     39 
     40 /*
     41  * meta --
     42  *    Turn on or off the terminal meta mode.
     43  */
     44 int
     45 meta(/*ARGSUSED*/ WINDOW *win, bool bf)
     46 {
     47 	if (__predict_false(win == NULL))
     48 		return ERR;
     49 
     50 	if (bf == TRUE) {
     51 		if (meta_on != NULL) {
     52 			__CTRACE(__CTRACE_MISC, "meta: TRUE\n");
     53 			tputs(meta_on, 0, __cputchar);
     54 			_cursesi_screen->meta_state = TRUE;
     55 			fflush(_cursesi_screen->outfd);
     56 		}
     57 	} else {
     58 		if (meta_off != NULL) {
     59 			__CTRACE(__CTRACE_MISC, "meta: FALSE\n");
     60 			tputs(meta_off, 0, __cputchar);
     61 			_cursesi_screen->meta_state = FALSE;
     62 			fflush(_cursesi_screen->outfd);
     63 		}
     64 	}
     65 
     66 	return OK;
     67 }
     68 
     69 /*
     70  * __restore_meta_state --
     71  *    Restore old meta state.
     72  */
     73 void
     74 __restore_meta_state(void)
     75 {
     76 
     77 	meta(NULL, _cursesi_screen->meta_state);
     78 }
     79 
     80