QualifierIPv4.java revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* 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
*/
/*
* ident "%Z%%M% %I% %E% SMI"
*
* Copyright 2002 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
package com.sun.dhcpmgr.data.qualifier;
import java.util.regex.*;
/**
* An implementation of the qualifier type that provides a string type
* where values must be a valid IPv4 address.
*/
public class QualifierIPv4 extends QualifierString {
private static final String octetRegex =
"0*(1?[0-9]{1,2}|2([0-4][0-9]|5[0-5]))";
private static final String addressRegex =
"(" + octetRegex + "[.]){3}" + octetRegex;
private static Pattern pattern;
public Object parseValue(String value) {
if (value == null) {
return null;
}
value = value.trim();
Matcher matcher = pattern.matcher(value);
return (matcher.matches() ? value : null);
}
static {
pattern = Pattern.compile(addressRegex);
}
}