/*******************************************************************************
 * Breakout Cave Survey Visualizer
 *
 * Copyright (C) 2014 James Edwards
 *
 * jedwards8 at fastmail dot fm
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option) any later
 * version.
 *
 * This program 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 General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *******************************************************************************/
package org.andork.format;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.andork.util.StringUtils;

public class DateFormatWrapper implements Format<Date> {
	DateFormat wrapped;

	public DateFormatWrapper(DateFormat wrapped) {
		super();
		this.wrapped = wrapped;
	}

	public DateFormatWrapper(String format) {
		this(new SimpleDateFormat(format));
	}

	@Override
	public String format(Date t) {
		if (t == null) {
			return null;
		}
		return wrapped.format(t);
	}

	@Override
	public Date parse(String s) throws Exception {
		if (StringUtils.isNullOrEmpty(s)) {
			return null;
		}
		try {
			return wrapped.parse(s);
		} catch (Exception e) {
			throw new IllegalArgumentException("Invalid format", e);
		}
	}
}