RegexMatchGroups.java

/**
 * This file Copyright (c) 2005-2008 Aptana, Inc. This program is
 * dual-licensed under both the Aptana Public License and the GNU General
 * Public license. You may elect to use one or the other of these licenses.
 * 
 * This program is distributed in the hope that it will be useful, but
 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
 * NONINFRINGEMENT. Redistribution, except as permitted by whichever of
 * the GPL or APL you select, is prohibited.
 *
 * 1. For the GPL license (GPL), you can redistribute and/or modify this
 * program under the terms of the GNU General Public License,
 * Version 3, as published by the Free Software Foundation.  You should
 * have received a copy of the GNU General Public License, Version 3 along
 * with this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 * 
 * Aptana provides a special exception to allow redistribution of this file
 * with certain other free and open source software ("FOSS") code and certain additional terms
 * pursuant to Section 7 of the GPL. You may view the exception and these
 * terms on the web at http://www.aptana.com/legal/gpl/.
 * 
 * 2. For the Aptana Public License (APL), this program and the
 * accompanying materials are made available under the terms of the APL
 * v1.0 which accompanies this distribution, and is available at
 * http://www.aptana.com/legal/apl/.
 * 
 * You may view the GPL, Aptana's exception and additional terms, and the
 * APL in the file titled license.html at the root of the corresponding
 * plugin containing this source file.
 * 
 * Any modifications to this file must keep this entire header intact.
 */
package com.aptana.ide.lexer.experimental;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import com.aptana.ide.core.Trace;

/**
 * @author Kevin Lindsey
 */
public final class RegexMatchGroups
{
	/**
	 * RegexMatchGroups
	 */
	private RegexMatchGroups()
	{
	}
	
	/**
	 * main
	 *
	 * @param args
	 */
	public static void main(String[] args)
	{
		Pattern p = Pattern.compile("(b+)|(a+)|(c+)"); //$NON-NLS-1$
		Matcher m = p.matcher("aaabbbccc"); //$NON-NLS-1$
		
		while (m.find())
		{
			Trace.info(m.group(0));
			
			int groupCount = m.groupCount();
			
			for (int i = 1; i <= groupCount; i++)
			{
				String group = m.group(i);
				
				if (group != null)
				{
					Trace.info(": " + i); //$NON-NLS-1$
					break;
				}
			}
		}
	}
}