sys/arch/atari/stand/tostools/libtos/keywait.c

   1 /*      $NetBSD: keywait.c,v 1.1.1.1 1996/01/07 21:50:50 leo Exp $      */
   2
   3 /*
   4  * Copyright (c) 1995 Waldi Ravens.
   5  * 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. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *        This product includes software developed by Waldi Ravens.
  18  * 4. The name of the author may not be used to endorse or promote products
  19  *    derived from this software without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <stdio.h>
  34 #include <stdlib.h>
  35 #include <unistd.h>
  36 #include <termios.h>
  37 #include "libtos.h"
  38
  39 int
  40 key_wait(char *text)
  41 {
  42         struct termios  term_attr;
  43         tcflag_t        lfl_orig;
  44         int             any_key;
  45         char            c;
  46
  47         any_key = (text == NULL);
  48         if (any_key)
  49                 text = "Press any key...";
  50
  51         fprintf(stderr, text);
  52         fflush(stderr);
  53
  54         tcgetattr(STDERR_FILENO, &term_attr);
  55         lfl_orig = term_attr.c_lflag;
  56         if (any_key)
  57                 term_attr.c_lflag &= ~ECHO;
  58         term_attr.c_lflag &= ~ICANON;
  59         tcsetattr(STDERR_FILENO, TCSAFLUSH, &term_attr);
  60         read(STDERR_FILENO, &c, 1);
  61         term_attr.c_lflag = lfl_orig;
  62         tcsetattr(STDERR_FILENO, TCSAFLUSH, &term_attr);
  63
  64         fprintf(stderr, (any_key ? "\r" : "\r\n"));
  65         fflush(stderr);
  66         return(c);
  67 }