Shuyi Chen | d7955ce | 2013-05-22 14:51:55 -0700 | [diff] [blame] | 1 | // Copyright (c) 1999-2004 Brian Wellington (bwelling@xbill.org) |
| 2 | |
| 3 | package org.xbill.DNS; |
| 4 | |
| 5 | import java.util.*; |
| 6 | |
| 7 | /** |
| 8 | * Boolean options:<BR> |
| 9 | * bindttl - Print TTLs in BIND format<BR> |
| 10 | * multiline - Print records in multiline format<BR> |
| 11 | * noprintin - Don't print the class of a record if it's IN<BR> |
| 12 | * verbose - Turn on general debugging statements<BR> |
| 13 | * verbosemsg - Print all messages sent or received by SimpleResolver<BR> |
| 14 | * verbosecompression - Print messages related to name compression<BR> |
| 15 | * verbosesec - Print messages related to signature verification<BR> |
| 16 | * verbosecache - Print messages related to cache lookups<BR> |
| 17 | * <BR> |
| 18 | * Valued options:<BR> |
| 19 | * tsigfudge=n - Sets the default TSIG fudge value (in seconds)<BR> |
| 20 | * sig0validity=n - Sets the default SIG(0) validity period (in seconds)<BR> |
| 21 | * |
| 22 | * @author Brian Wellington |
| 23 | */ |
| 24 | |
| 25 | public final class Options { |
| 26 | |
| 27 | private static Map table; |
| 28 | |
| 29 | static { |
| 30 | try { |
| 31 | refresh(); |
| 32 | } |
| 33 | catch (SecurityException e) { |
| 34 | } |
| 35 | } |
| 36 | |
| 37 | private |
| 38 | Options() {} |
| 39 | |
| 40 | public static void |
| 41 | refresh() { |
| 42 | String s = System.getProperty("dnsjava.options"); |
| 43 | if (s != null) { |
| 44 | StringTokenizer st = new StringTokenizer(s, ","); |
| 45 | while (st.hasMoreTokens()) { |
| 46 | String token = st.nextToken(); |
| 47 | int index = token.indexOf('='); |
| 48 | if (index == -1) |
| 49 | set(token); |
| 50 | else { |
| 51 | String option = token.substring(0, index); |
| 52 | String value = token.substring(index + 1); |
| 53 | set(option, value); |
| 54 | } |
| 55 | } |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | /** Clears all defined options */ |
| 60 | public static void |
| 61 | clear() { |
| 62 | table = null; |
| 63 | } |
| 64 | |
| 65 | /** Sets an option to "true" */ |
| 66 | public static void |
| 67 | set(String option) { |
| 68 | if (table == null) |
| 69 | table = new HashMap(); |
| 70 | table.put(option.toLowerCase(), "true"); |
| 71 | } |
| 72 | |
| 73 | /** Sets an option to the the supplied value */ |
| 74 | public static void |
| 75 | set(String option, String value) { |
| 76 | if (table == null) |
| 77 | table = new HashMap(); |
| 78 | table.put(option.toLowerCase(), value.toLowerCase()); |
| 79 | } |
| 80 | |
| 81 | /** Removes an option */ |
| 82 | public static void |
| 83 | unset(String option) { |
| 84 | if (table == null) |
| 85 | return; |
| 86 | table.remove(option.toLowerCase()); |
| 87 | } |
| 88 | |
| 89 | /** Checks if an option is defined */ |
| 90 | public static boolean |
| 91 | check(String option) { |
| 92 | if (table == null) |
| 93 | return false; |
| 94 | return (table.get(option.toLowerCase()) != null); |
| 95 | } |
| 96 | |
| 97 | /** Returns the value of an option */ |
| 98 | public static String |
| 99 | value(String option) { |
| 100 | if (table == null) |
| 101 | return null; |
| 102 | return ((String)table.get(option.toLowerCase())); |
| 103 | } |
| 104 | |
| 105 | /** |
| 106 | * Returns the value of an option as an integer, or -1 if not defined. |
| 107 | */ |
| 108 | public static int |
| 109 | intValue(String option) { |
| 110 | String s = value(option); |
| 111 | if (s != null) { |
| 112 | try { |
| 113 | int val = Integer.parseInt(s); |
| 114 | if (val > 0) |
| 115 | return (val); |
| 116 | } |
| 117 | catch (NumberFormatException e) { |
| 118 | } |
| 119 | } |
| 120 | return (-1); |
| 121 | } |
| 122 | |
| 123 | } |