DateUtil.java

/**
 * Licensed to Apereo under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright ownership. Apereo
 * licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use
 * this file except in compliance with the License. You may obtain a copy of the License at the
 * following location:
 *
 * <p>http://www.apache.org/licenses/LICENSE-2.0
 *
 * <p>Unless required by applicable law or agreed to in writing, software distributed under the
 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jasig.portlet.calendar.util;

import java.text.ParseException;
import javax.portlet.PortletRequest;
import javax.portlet.PortletSession;
import org.joda.time.DateMidnight;
import org.joda.time.DateTimeZone;
import org.joda.time.Interval;
import org.joda.time.format.DateTimeFormatter;
import org.joda.time.format.DateTimeFormatterBuilder;

/** @author Chris Waymire (chris@waymire.net) */
public class DateUtil {

  public static Interval getInterval(String startDate, int days, PortletRequest request)
      throws ParseException {
    final PortletSession session = request.getPortletSession();
    final String timezone = (String) session.getAttribute("timezone");
    final DateTimeZone tz = DateTimeZone.forID(timezone);
    final DateTimeFormatter df =
        new DateTimeFormatterBuilder().appendPattern("MMddyyyy").toFormatter().withZone(tz);
    final DateMidnight start = new DateMidnight(df.parseDateTime(startDate), tz);

    return getInterval(start, days);
  }

  public static Interval getInterval(DateMidnight start, int days) {
    Interval interval = new Interval(start, start.plusDays(days));
    return interval;
  }

  private DateUtil() {}
}