/*      $NetBSD: keywait.c,v 1.2 2009/03/14 15:36:04 dsl Exp $  */

/*
* Copyright (c) 1995 Waldi Ravens.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*        This product includes software developed by Waldi Ravens.
* 4. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <termios.h>
#include "libtos.h"

int
key_wait(char *text)
{
       struct termios  term_attr;
       tcflag_t        lfl_orig;
       int             any_key;
       char            c;

       any_key = (text == NULL);
       if (any_key)
               text = "Press any key...";

       fprintf(stderr, text);
       fflush(stderr);

       tcgetattr(STDERR_FILENO, &term_attr);
       lfl_orig = term_attr.c_lflag;
       if (any_key)
               term_attr.c_lflag &= ~ECHO;
       term_attr.c_lflag &= ~ICANON;
       tcsetattr(STDERR_FILENO, TCSAFLUSH, &term_attr);
       read(STDERR_FILENO, &c, 1);
       term_attr.c_lflag = lfl_orig;
       tcsetattr(STDERR_FILENO, TCSAFLUSH, &term_attr);

       fprintf(stderr, (any_key ? "\r" : "\r\n"));
       fflush(stderr);
       return(c);
}