/*
OrpheusMS: MapleStory Private Server based on OdinMS
Copyright (C) 2012 Aaron Weiss <aaron@deviant-core.net>
Patrick Huy <patrick.huy@frz.cc>
Matthias Butz <matze@odinms.de>
Jan Christian Meyer <vimes@odinms.de>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package tools;
import java.util.Date;
import java.util.SimpleTimeZone;
public class DateUtil {
private final static long FT_UT_OFFSET = 116444520000000000L;
public static boolean isDST() {
return SimpleTimeZone.getDefault().inDaylightTime(new Date());
}
/**
* Converts a Unix Timestamp into File Time
*
* @param realTimestamp
* The actual timestamp in milliseconds.
* @return A 64-bit long giving a filetime timestamp
*/
public static long getFileTimestamp(long timeStampinMillis) {
return getFileTimestamp(timeStampinMillis, false);
}
public static long getFileTimestamp(long timeStampinMillis, boolean roundToMinutes) {
if (isDST())
timeStampinMillis -= 3600000L;
long time;
if (roundToMinutes)
time = (timeStampinMillis / 1000 / 60) * 600000000;
else
time = timeStampinMillis * 10000;
return time + FT_UT_OFFSET;
}
}