/*
This file is part of RouteConverter.
RouteConverter 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.
RouteConverter 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 RouteConverter; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Copyright (C) 2007 Christian Pesch. All Rights Reserved.
*/
package slash.navigation.rest;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;
import static java.util.Locale.US;
import static java.util.TimeZone.getTimeZone;
import static slash.common.type.CompactCalendar.fromMillisAndTimeZone;
/**
* The <code>RFC2616</code> utility class provides helper methods
* to deal with date/time formatting
* see <a href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.3">RFC2616</a>).
*
* @author Christian Pesch
*/
public final class RFC2616 {
private static final String RFC1123_DATE = "EEE, dd MMM yyyy HH:mm:ss zzz";
private static final TimeZone GMT = getTimeZone("GMT");
private static DateFormat createDateFormat() {
SimpleDateFormat format = new SimpleDateFormat(RFC1123_DATE, US);
// django.utils.http.RFC1123_DATE expects GMT
format.setTimeZone(GMT);
return format;
}
public static String formatDate(long date) {
return createDateFormat().format(new Date(date));
}
public static Calendar parseDate(String date) throws ParseException {
Date intermediate = createDateFormat().parse(date);
return fromMillisAndTimeZone(intermediate.getTime(), GMT.getID()).getCalendar();
}
}