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// Copyright (c) 1999-2004 Brian Wellington (bwelling@xbill.org)
package org.xbill.DNS;
import java.util.*;
/**
* Boolean options:<BR>
* bindttl - Print TTLs in BIND format<BR>
* multiline - Print records in multiline format<BR>
* noprintin - Don't print the class of a record if it's IN<BR>
* verbose - Turn on general debugging statements<BR>
* verbosemsg - Print all messages sent or received by SimpleResolver<BR>
* verbosecompression - Print messages related to name compression<BR>
* verbosesec - Print messages related to signature verification<BR>
* verbosecache - Print messages related to cache lookups<BR>
* <BR>
* Valued options:<BR>
* tsigfudge=n - Sets the default TSIG fudge value (in seconds)<BR>
* sig0validity=n - Sets the default SIG(0) validity period (in seconds)<BR>
*
* @author Brian Wellington
*/
public final class Options {
private static Map table;
static {
try {
refresh();
}
catch (SecurityException e) {
}
}
private
Options() {}
public static void
refresh() {
String s = System.getProperty("dnsjava.options");
if (s != null) {
StringTokenizer st = new StringTokenizer(s, ",");
while (st.hasMoreTokens()) {
String token = st.nextToken();
int index = token.indexOf('=');
if (index == -1)
set(token);
else {
String option = token.substring(0, index);
String value = token.substring(index + 1);
set(option, value);
}
}
}
}
/** Clears all defined options */
public static void
clear() {
table = null;
}
/** Sets an option to "true" */
public static void
set(String option) {
if (table == null)
table = new HashMap();
table.put(option.toLowerCase(), "true");
}
/** Sets an option to the the supplied value */
public static void
set(String option, String value) {
if (table == null)
table = new HashMap();
table.put(option.toLowerCase(), value.toLowerCase());
}
/** Removes an option */
public static void
unset(String option) {
if (table == null)
return;
table.remove(option.toLowerCase());
}
/** Checks if an option is defined */
public static boolean
check(String option) {
if (table == null)
return false;
return (table.get(option.toLowerCase()) != null);
}
/** Returns the value of an option */
public static String
value(String option) {
if (table == null)
return null;
return ((String)table.get(option.toLowerCase()));
}
/**
* Returns the value of an option as an integer, or -1 if not defined.
*/
public static int
intValue(String option) {
String s = value(option);
if (s != null) {
try {
int val = Integer.parseInt(s);
if (val > 0)
return (val);
}
catch (NumberFormatException e) {
}
}
return (-1);
}
}
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