1 /* yesno.c -- read a yes/no response from stdin
3 Copyright (C) 1990, 1998, 2001, 2003, 2004, 2005, 2006, 2007 Free
4 Software Foundation, Inc.
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 3 of the License, or
9 (at your option) any later version.
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.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 extern int rpmatch (char const *response);
28 /* Return true if we read an affirmative line from standard input.
30 Since this function uses stdin, it is suggested that the caller not
31 use STDIN_FILENO directly, and also that the line
32 atexit(close_stdin) be added to main(). */
40 char *response = NULL;
41 size_t response_size = 0;
42 ssize_t response_len = getline (&response, &response_size, stdin);
44 if (response_len <= 0)
48 response[response_len - 1] = '\0';
49 yes = (0 < rpmatch (response));
54 /* Test against "^[yY]", hardcoded to avoid requiring getline,
55 regex, and rpmatch. */
57 yes = (c == 'y' || c == 'Y');
58 while (c != '\n' && c != EOF)