1 /* yesno.c -- read a yes/no response from stdin
2
3 Copyright (C) 1990, 1998, 2001, 2003, 2004, 2005 Free Software
4 Foundation, Inc.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
9 any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software Foundation,
18 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
19 #include <sys/cdefs.h>
20 __RCSID("$NetBSD: yesno.c,v 1.2 2016/05/17 14:00:09 christos Exp $");
21
22
23 #ifdef HAVE_CONFIG_H
24 # include <config.h>
25 #endif
26
27 #include "yesno.h"
28
29 #include <stdlib.h>
30 #include <stdio.h>
31
32 #include "getline.h"
33
34 /* Return true if we read an affirmative line from standard input. */
35
36 extern int rpmatch (char const *response);
37
38 bool
yesno(void)39 yesno (void)
40 {
41 char *response = NULL;
42 size_t response_size = 0;
43 ssize_t response_len = getline (&response, &response_size, stdin);
44 bool yes;
45
46 if (response_len <= 0)
47 yes = false;
48 else
49 {
50 response[response_len - 1] = '\0';
51 yes = (0 < rpmatch (response));
52 }
53
54 free (response);
55 return yes;
56 }
57