/*
* Copyright (c) 1998-2010 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source 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.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.config.types;
import com.caucho.config.ConfigException;
import com.caucho.util.L10N;
import com.caucho.util.QDate;
/**
* Representations of time in milliseconds.
*/
public class Period {
static L10N L = new L10N(Period.class);
public static final long SECOND = 1000L;
public static final long MINUTE = 60L * SECOND;
public static final long HOUR = 60L * MINUTE;
public static final long DAY = 24L * HOUR;
/** 30 days */
public static final long MONTH = DAY * 30L;
/** 365 days */
public static final long YEAR = DAY * 365L;
public static final long INFINITE = (Long.MAX_VALUE / 2 / 1000) * 1000;
public static final long FOREVER = INFINITE;
private long _period;
public Period()
{
}
public Period(long period)
{
_period = period;
}
/**
* Returns the default units (default is 1000)
*/
public long getDefaultUnits()
{
return 1000;
}
/**
* Sets the text.
*/
public void addText(String text)
throws ConfigException
{
_period = toPeriod(text, getDefaultUnits());
}
/**
* Replace with the real path.
*/
public long getPeriod()
{
return _period;
}
/**
* Converts a period string to a time.
*
* <table>
* <tr><td>ms<td>milliseconds
* <tr><td>s<td>seconds
* <tr><td>m<td>minutes
* <tr><td>h<td>hours
* <tr><td>D<td>days
* <tr><td>W<td>weeks
* <tr><td>M<td>months
* <tr><td>Y<td>years
* </table>
*/
public static long toPeriod(String value)
throws ConfigException
{
return toPeriod(value, 1000);
}
/**
* Converts a period string to a time.
*
* <table>
* <tr><td>ms<td>milliseconds
* <tr><td>s<td>seconds
* <tr><td>m<td>minutes
* <tr><td>h<td>hours
* <tr><td>D<td>days
* <tr><td>W<td>weeks
* <tr><td>M<td>months
* <tr><td>Y<td>years
* </table>
*/
public static long toPeriod(String value, long defaultUnits)
throws ConfigException
{
if (value == null)
return 0;
long sign = 1;
long period = 0;
int i = 0;
int length = value.length();
if (length > 0 && value.charAt(i) == '-') {
sign = -1;
i++;
}
while (i < length) {
long delta = 0;
char ch;
for (; i < length && (ch = value.charAt(i)) >= '0' && ch <= '9'; i++)
delta = 10 * delta + ch - '0';
if (length <= i)
period += defaultUnits * delta;
else {
ch = value.charAt(i++);
switch (ch) {
case 's':
period += 1000 * delta;
break;
case 'm':
if (i < value.length() && value.charAt(i) == 's') {
i++;
period += delta;
}
else
period += 60 * 1000 * delta;
break;
case 'h':
period += 60L * 60 * 1000 * delta;
break;
case 'D':
period += DAY * delta;
break;
case 'W':
period += 7L * DAY * delta;
break;
case 'M':
period += 30L * DAY * delta;
break;
case 'Y':
period += 365L * DAY * delta;
break;
default:
throw new ConfigException(L.l("Unknown unit `{0}' in period `{1}'. Valid units are:\n '10ms' milliseconds\n '10s' seconds\n '10m' minutes\n '10h' hours\n '10D' days\n '10W' weeks\n '10M' months\n '10Y' years",
String.valueOf(ch), value));
}
}
}
period = sign * period;
// server/137w
/*
if (period < 0)
return INFINITE;
else
return period;
*/
return period;
}
/**
* Calculates the next period end. The calculation is in local time.
*
* @param now the current time in GMT ms since the epoch
*
* @return the time of the next period in GMT ms since the epoch
*/
public static long periodEnd(long now, long period)
{
QDate localCalendar = QDate.allocateLocalDate();
long endTime = periodEnd(now, period, localCalendar);
QDate.freeLocalDate(localCalendar);
return endTime;
}
/**
* Calculates the next period end. The calculation is in local time.
*
* @param now the current time in GMT ms since the epoch
*
* @return the time of the next period in GMT ms since the epoch
*/
private static long periodEnd(long now, long period, QDate cal)
{
if (period < 0)
return Long.MAX_VALUE;
else if (period == 0)
return now;
if (period < 30 * DAY) {
cal.setGMTTime(now);
long localTime = cal.getLocalTime();
localTime = localTime + (period - (localTime + 4 * DAY) % period);
cal.setLocalTime(localTime);
return cal.getGMTTime();
}
if (period % (30 * DAY) == 0) {
int months = (int) (period / (30 * DAY));
cal.setGMTTime(now);
long year = cal.getYear();
int month = cal.getMonth();
cal.setLocalTime(0);
cal.setDate(year, month + months, 1);
return cal.getGMTTime();
}
if (period % (365 * DAY) == 0) {
long years = (period / (365 * DAY));
cal.setGMTTime(now);
long year = cal.getYear();
cal.setLocalTime(0);
long newYear = year + (years - year % years);
cal.setDate(newYear, 0, 1);
return cal.getGMTTime();
}
cal.setGMTTime(now);
long localTime = cal.getLocalTime();
localTime = localTime + (period - (localTime + 4 * DAY) % period);
cal.setLocalTime(localTime);
return cal.getGMTTime();
}
public String toString()
{
return "Period[" + _period + "]";
}
}