shadow/libmisc/yesno.c

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/*
* Copyright 1992 - 1994, Julianne Frances Haugh
* 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. Neither the name of Julianne F. Haugh nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH 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 JULIE HAUGH 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) {
printf (_("No\n"));
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;
}