/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*        All Rights Reserved   */


/*
 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*LINTLIBRARY*/

#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <limits.h>
#include <sys/types.h>
#include "libadm.h"

static char *choices[] = { "y", "n", NULL };
static char *vchoices[] = { "y", "n", "yes", "no", NULL };

#define TMPSIZ  7
#define REQMSG  "Input is required."
#define ERRMSG  "Please enter yes or no."
#define HLPMSG  \
        "To respond in the affirmative, enter y, yes, Y, or YES. \
        To respond in the negative, enter n, no, N, or NO."

int
ckyorn_val(char *str)
{
        int     i;
        char    *pt,
                temp[TMPSIZ+1];

        for (pt = temp, i = 0; *str && i < TMPSIZ; i++) {
                *pt++ = tolower((unsigned char)*str++);
        }
        *pt = '\0';
        for (i = 0; vchoices[i]; ) {
                if (strcmp(temp, vchoices[i++]) == 0)
                        return (0);
        }
        return (-1);
}

void
ckyorn_err(char *error)
{
        puterror(stdout, ERRMSG, error);
}

void
ckyorn_hlp(char *help)
{
        puthelp(stdout, HLPMSG, help);
}

int
ckyorn(char *yorn, char *defstr, char *error, char *help, char *prompt)
{
        int     n;
        char    input[MAX_INPUT];

        if (!prompt)
                prompt = "Yes or No";
start:
        putprmpt(stderr, prompt, choices, defstr);
        if (getinput(input))
                return (1);

        n = (int)strlen(input);
        if (n == 0) {
                if (defstr) {
                        (void) strcpy(yorn, defstr);
                        return (0);
                }
                puterror(stderr, REQMSG, error);
                goto start;
        }
        if (strcmp(input, "?") == 0) {
                puthelp(stderr, HLPMSG, help);
                goto start;
        }
        if (ckquit && (strcmp(input, "q") == 0))
                return (3);

        if (ckyorn_val(input)) {
                puterror(stderr, ERRMSG, error);
                goto start;
        }
        (void) strcpy(yorn, input);
        return (0);
}