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
36extern int rpmatch (char const *response);
37
38bool
39yesno (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