usr/src/lib/libadm/common/ckyorn.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  23 /*        All Rights Reserved   */
  24
  25
  26 /*
  27  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  28  * Use is subject to license terms.
  29  */
  30
  31 #pragma ident   "%Z%%M% %I%     %E% SMI"        /* SVr4.0 1.1 */
  32 /*LINTLIBRARY*/
  33
  34 #include <stdio.h>
  35 #include <ctype.h>
  36 #include <string.h>
  37 #include <limits.h>
  38 #include <sys/types.h>
  39 #include "libadm.h"
  40
  41 static char *choices[] = { "y", "n", NULL };
  42 static char *vchoices[] = { "y", "n", "yes", "no", NULL };
  43
  44 #define TMPSIZ  7
  45 #define REQMSG  "Input is required."
  46 #define ERRMSG  "Please enter yes or no."
  47 #define HLPMSG  \
  48         "To respond in the affirmative, enter y, yes, Y, or YES. \
  49         To respond in the negative, enter n, no, N, or NO."
  50
  51 int
  52 ckyorn_val(char *str)
  53 {
  54         int     i;
  55         char    *pt,
  56                 temp[TMPSIZ+1];
  57
  58         for (pt = temp, i = 0; *str && i < TMPSIZ; i++) {
  59                 *pt++ = tolower((unsigned char)*str++);
  60         }
  61         *pt = '\0';
  62         for (i = 0; vchoices[i]; ) {
  63                 if (strcmp(temp, vchoices[i++]) == 0)
  64                         return (0);
  65         }
  66         return (-1);
  67 }
  68
  69 void
  70 ckyorn_err(char *error)
  71 {
  72         puterror(stdout, ERRMSG, error);
  73 }
  74
  75 void
  76 ckyorn_hlp(char *help)
  77 {
  78         puthelp(stdout, HLPMSG, help);
  79 }
  80
  81 int
  82 ckyorn(char *yorn, char *defstr, char *error, char *help, char *prompt)
  83 {
  84         int     n;
  85         char    input[MAX_INPUT];
  86
  87         if (!prompt)
  88                 prompt = "Yes or No";
  89 start:
  90         putprmpt(stderr, prompt, choices, defstr);
  91         if (getinput(input))
  92                 return (1);
  93
  94         n = (int)strlen(input);
  95         if (n == 0) {
  96                 if (defstr) {
  97                         (void) strcpy(yorn, defstr);
  98                         return (0);
  99                 }
 100                 puterror(stderr, REQMSG, error);
 101                 goto start;
 102         }
 103         if (strcmp(input, "?") == 0) {
 104                 puthelp(stderr, HLPMSG, help);
 105                 goto start;
 106         }
 107         if (ckquit && (strcmp(input, "q") == 0))
 108                 return (3);
 109
 110         if (ckyorn_val(input)) {
 111                 puterror(stderr, ERRMSG, error);
 112                 goto start;
 113         }
 114         (void) strcpy(yorn, input);
 115         return (0);
 116 }