69 lines
2.4 KiB
C
69 lines
2.4 KiB
C
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/* $NetBSD: keywait.c,v 1.1.1.1 1996/01/07 21:50:50 leo Exp $ */
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/*
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* Copyright (c) 1995 Waldi Ravens.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Waldi Ravens.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <termios.h>
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#include "libtos.h"
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int
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key_wait(text)
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char *text;
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{
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struct termios term_attr;
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tcflag_t lfl_orig;
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int any_key;
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char c;
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any_key = (text == NULL);
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if (any_key)
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text = "Press any key...";
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fprintf(stderr, text);
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fflush(stderr);
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tcgetattr(STDERR_FILENO, &term_attr);
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lfl_orig = term_attr.c_lflag;
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if (any_key)
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term_attr.c_lflag &= ~ECHO;
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term_attr.c_lflag &= ~ICANON;
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tcsetattr(STDERR_FILENO, TCSAFLUSH, &term_attr);
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read(STDERR_FILENO, &c, 1);
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term_attr.c_lflag = lfl_orig;
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tcsetattr(STDERR_FILENO, TCSAFLUSH, &term_attr);
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fprintf(stderr, (any_key ? "\r" : "\r\n"));
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fflush(stderr);
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return(c);
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}
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