/*
 * Copyright 2008 (C) Tom Parker <thpr@users.sourceforge.net>
 * 
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 * 
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package plugin.lsttokens.testsupport;

import java.net.URI;
import java.util.StringTokenizer;

import pcgen.cdom.base.Loadable;
import pcgen.persistence.PersistenceLayerException;
import pcgen.rules.context.LoadContext;
import pcgen.rules.persistence.CDOMLoader;
import pcgen.util.Logging;

public class CDOMTokenLoader<T extends Loadable> implements CDOMLoader<T>
{

    @Override
	public boolean parseLine(LoadContext context, T obj, String val, URI source)
			throws PersistenceLayerException
	{
		if (val == null)
		{
			return true;
		}
		boolean returnValue = true;
		StringTokenizer st = new StringTokenizer(val, "\t");
		while (st.hasMoreTokens())
		{
			String token = st.nextToken().trim();
			int colonLoc = token.indexOf(':');
			if (colonLoc == -1)
			{
				Logging.errorPrint("Invalid Token - does not contain a colon: "
						+ token);
				returnValue &= false;
				continue;
			}
			else if (colonLoc == 0)
			{
				Logging.errorPrint("Invalid Token - starts with a colon: "
						+ token);
				returnValue &= false;
			}
			String key = token.substring(0, colonLoc);
			String value = (colonLoc == token.length() - 1) ? null : token
					.substring(colonLoc + 1);
			if (context.processToken(obj, key.intern(), value.intern()))
			{
				context.commit();
			}
			else
			{
				context.rollback();
				Logging.replayParsedMessages();
				returnValue &= false;
			}
			Logging.clearParseMessages();
		}
		return returnValue;
	}
}