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coreutils/lib/yesno.c
Paul Eggert 963e363388 * yesno.c: Include getline.h, not ctype.h.
(yesno): Don't remove leading white space; POSIX doesn't allow it.
Use getline to remove arbitrary restriction on response length.
2005-05-08 16:50:57 +00:00

54 lines
1.4 KiB
C

/* yesno.c -- read a yes/no response from stdin
Copyright (C) 1990, 1998, 2001, 2003, 2004, 2005 Free Software
Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#if HAVE_CONFIG_H
# include <config.h>
#endif
#include "yesno.h"
#include <stdlib.h>
#include <stdio.h>
#include "getline.h"
/* Return true if we read an affirmative line from standard input. */
extern int rpmatch (char const *response);
bool
yesno (void)
{
char *response = NULL;
size_t response_size = 0;
ssize_t response_len = getline (&response, &response_size, stdin);
bool yes;
if (response_len <= 0)
yes = false;
else
{
response[response_len - 1] = '\0';
yes = (0 < rpmatch (response));
}
free (response);
return yes;
}