/**
* Vosao CMS. Simple CMS for Google App Engine.
*
* Copyright (C) 2009-2010 Vosao development team.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* email: vosao.dev@gmail.com
*/
package org.vosao.utils;
import java.text.DateFormat;
import java.text.Format;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;
import org.apache.commons.lang.StringUtils;
import org.vosao.common.VosaoContext;
public class DateUtil {
private static final Format formatter = new SimpleDateFormat("dd.MM.yyyy");
private static final DateFormat dateTimeFormatter = new SimpleDateFormat("dd.MM.yyyy HH:mm:ss");
private static final DateFormat timeFormatter = new SimpleDateFormat("HH:mm");
private static final Format headerFormatter = new SimpleDateFormat("EEE, d MMM yyyy HH:mm:ss z");
public static String toString(final Date date) {
if (date == null) return "";
return formatter.format(date);
}
public static TimeZone getTimeZone() {
return VosaoContext.getInstance().getBusiness().getTimeZone();
}
public static String dateTimeToString(final Date date) {
if (date == null) {
return "";
}
TimeZone tz = getTimeZone();
if (!tz.equals(dateTimeFormatter.getTimeZone())) {
dateTimeFormatter.setTimeZone(tz);
}
return dateTimeFormatter.format(date);
}
public static String timeToString(final Date date) {
if (date == null) {
return "";
}
TimeZone tz = getTimeZone();
if (!tz.equals(timeFormatter.getTimeZone())) {
timeFormatter.setTimeZone(tz);
}
return timeFormatter.format(date);
}
public static Date dateTimeToDate(final String str) throws ParseException {
TimeZone tz = getTimeZone();
if (!tz.equals(dateTimeFormatter.getTimeZone())) {
dateTimeFormatter.setTimeZone(tz);
}
return (Date)dateTimeFormatter.parseObject(str);
}
public static Date toDate(final String str) throws ParseException {
return (Date)formatter.parseObject(str);
}
public static String toHeaderString(final Date date) {
if (date == null) {
return "";
}
return headerFormatter.format(date);
}
}