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
20#ifdef HAVE_CONFIG_H
21# include <config.h>
22#endif
23
24#include "yesno.h"
25
26#include <stdlib.h>
27#include <stdio.h>
28
29#include "getline.h"
30
31/* Return true if we read an affirmative line from standard input.  */
32
33extern int rpmatch (char const *response);
34
35bool
36yesno (void)
37{
38  char *response = NULL;
39  size_t response_size = 0;
40  ssize_t response_len = getline (&response, &response_size, stdin);
41  bool yes;
42
43  if (response_len <= 0)
44    yes = false;
45  else
46    {
47      response[response_len - 1] = '\0';
48      yes = (0 < rpmatch (response));
49    }
50
51  free (response);
52  return yes;
53}
54