libadm/common/ckyorn.c

/*
 * 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.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"    /* SVr4.0 1.1 */
/*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);
}