org.onebusaway.nextbus.impl.util.ConversionUtil.java Source code

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Here is the source code for org.onebusaway.nextbus.impl.util.ConversionUtil.java

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/**
 * Copyright (C) 2015 Cambridge Systematics
 *
 * Licensed 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
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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.onebusaway.nextbus.impl.util;

import java.util.Date;
import java.util.TimeZone;

import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;

public class ConversionUtil {

    private static DateTimeZone timeZone = DateTimeZone.forID(TimeZone.getDefault().getID());

    public static Date convertLocalDateToDateTimezone(Date date, String tzone) {
        TimeZone timezone = TimeZone.getTimeZone(tzone);
        long gmtMillis = date.getTime();
        long result = gmtMillis + timezone.getOffset(gmtMillis);
        return new Date(result);
    }

    public static Date convertLocalDateToDateTimezone(Date date) {
        return convertLocalDateToDateTimezone(date, TimeZone.getDefault().getID());
    }

    public static double footToMeter(double foot) {
        return 0.305 * foot;
    }

    public static double meterToFoot(double meter) {
        return meter / 0.305;
    }

    public static long getStartofDayTime(Date date) {
        DateTime dateTime = new DateTime(date, timeZone);
        dateTime = dateTime.withTimeAtStartOfDay();
        return dateTime.getMillis();
    }

}