/*
* MACAddressParserTest.java
* Created 30.01.2006.
* eaio: UUID - an implementation of the UUID specification
* Copyright (c) 2003-2013 Johann Burkard (jb@eaio.com) http://eaio.com.
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
* NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package com.almende.util.uuid;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* The MAC address parser attempts to find the following patterns:
* <ul>
* <li>.{1,2}:.{1,2}:.{1,2}:.{1,2}:.{1,2}:.{1,2}</li>
* <li>.{1,2}-.{1,2}-.{1,2}-.{1,2}-.{1,2}-.{1,2}</li>
* </ul>
*
* @author <a href="mailto:jb@eaio.com">Johann Burkard</a>
* @version MACAddressParser.java 4714 2012-03-16 11:43:28Z johann $
* @see <a href="http://johannburkard.de/software/uuid/">UUID</a>
*/
public final class MACAddressParser {
/** The Constant MAC_ADDRESS. */
public static final Pattern MAC_ADDRESS = Pattern
.compile(
"((?:[A-F0-9]{1,2}[:-]){5}[A-F0-9]{1,2})|(?:0x)(\\d{12})(?:.+ETHER)",
Pattern.CASE_INSENSITIVE);
private MACAddressParser() {}
/**
* Attempts to find a pattern in the given String.
*
* @param in
* the String, may not be <code>null</code>
* @return the substring that matches this pattern or <code>null</code>
*/
static String parse(final String in) {
final Matcher m = MAC_ADDRESS.matcher(in);
if (m.find()) {
String g = m.group(2);
if (g == null) {
g = m.group(1);
}
return g == null ? g : g.replace('-', ':');
}
return null;
}
}