/**
* Copyright (c) 2006 Richard Rodgers
*
* 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 com.monad.homerun.util;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
/**
* TimeUtil is a utility class with static methods to convert times in various
* formats into other formats
*/
public class TimeUtil {
private static final int MINS_PER_DAY = 60 * 24;
private static final long MS_PER_DAY = 1000 * 60 * MINS_PER_DAY;
private static final int SEC = 1000;
private static final int MIN = SEC * 60;
private static final int HOUR = MIN * 60;
private static final int DAY = HOUR * 24;
private static final long WEEK = DAY * 7;
private static final long YEAR = WEEK * 52;
private static final long[] buckets = { YEAR, WEEK, DAY, HOUR, MIN, SEC };
private static final String[] bucketNames = { "year", "week", "day",
"hour", "minute", "second" };
private static GregorianCalendar statFmtCal = new GregorianCalendar();
private static final String ts24Pat = "H:mm:ss yy-MM-dd";
// convert date in minute of the week format into millisecond format
public static long dateFormat(short weekMins) {
long dateMillis = System.currentTimeMillis();
synchronized (statFmtCal) {
statFmtCal.setTime(new Date(dateMillis));
// get the day of the week
int nowDay = statFmtCal.get(Calendar.DAY_OF_WEEK) - 1;
// get day of the week of stat time
int statDay = weekMins / 1440;
if (nowDay > statDay) {
dateMillis -= (nowDay - statDay) * 1440 * 60 * 1000;
} else if (nowDay < statDay) {
dateMillis += (statDay - nowDay) * 1440 * 60 * 1000;
}
// now get the hour of the day
int nowHour = statFmtCal.get(Calendar.HOUR_OF_DAY);
int statHour = (weekMins % 1440) / 60;
if (nowHour > statHour) {
dateMillis -= (nowHour - statHour) * 60 * 60 * 1000;
} else if (nowHour < statHour) {
dateMillis += (statHour - nowHour) * 60 * 60 * 1000;
}
// finally minutes
int nowMins = statFmtCal.get(Calendar.MINUTE);
int statMins = (weekMins % 1440) % 60;
if (nowMins > statMins) {
dateMillis -= (nowMins - statMins) * 60 * 1000;
} else if (nowMins < statMins) {
dateMillis += (statMins - nowMins) * 60 * 1000;
}
}
return dateMillis;
}
}