shadow/libmisc/yesno.c

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/*
* Copyright (c) 1992 - 1994, Julianne Frances Haugh
* Copyright (c) 2007 - 2008, Nicolas François
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the copyright holders or contributors may not be used to
* endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Common code for yes/no prompting
*
* Used by pwck.c and grpck.c
*/
#include <config.h>
#ident "$Id$"
#include <stdio.h>
#include "prototypes.h"
/*
* yes_or_no - get answer to question from the user
*
* It returns 0 if no.
*
* If the read_only flag is set, it will print No, and will return 0.
*/
int yes_or_no (int read_only)
{
char buf[80];
/*
* In read-only mode all questions are answered "no".
*/
if (read_only) {
puts (_("No"));
return 0;
}
/*
* Typically, there's a prompt on stdout, sometimes unflushed.
*/
fflush (stdout);
/*
* Get a line and see what the first character is.
*/
/* TODO: use gettext */
if (fgets (buf, sizeof buf, stdin))
return buf[0] == 'y' || buf[0] == 'Y';
return 0;
}