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/*
* MACAddressParserTest.java
*
* Created 30.01.2006.
*
* eaio: UUID - an implementation of the UUID specification
* Copyright (c) 2003-2009 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.eaio.uuid;
/**
* 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>
*
* @see <a href="http://johannburkard.de/software/uuid/">UUID</a>
* @author <a href="mailto:jb@eaio.com">Johann Burkard</a>
* @version $Id: MACAddressParser.java 1888 2009-03-15 12:43:24Z johann $
*/
class MACAddressParser {
/**
* No instances needed.
*/
private MACAddressParser() {
super();
}
/**
* 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(String in) {
String out = in;
// lanscan
int hexStart = out.indexOf("0x");
if (hexStart != -1 && out.indexOf("ETHER") != -1) {
int hexEnd = out.indexOf(' ', hexStart);
if (hexEnd > hexStart + 2) {
out = out.substring(hexStart, hexEnd);
}
}
else {
int octets = 0;
int lastIndex, old, end;
if (out.indexOf('-') > -1) {
out = out.replace('-', ':');
}
lastIndex = out.lastIndexOf(':');
if (lastIndex > out.length() - 2) {
out = null;
}
else {
end = Math.min(out.length(), lastIndex + 3);
++octets;
old = lastIndex;
while (octets != 5 && lastIndex != -1 && lastIndex > 1) {
lastIndex = out.lastIndexOf(':', --lastIndex);
if (old - lastIndex == 3 || old - lastIndex == 2) {
++octets;
old = lastIndex;
}
}
if (octets == 5 && lastIndex > 1) {
out = out.substring(lastIndex - 2, end).trim();
}
else {
out = null;
}
}
}
if (out != null && out.startsWith("0x")) {
out = out.substring(2);
}
return out;
}
}
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