You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
284 lines
14 KiB
284 lines
14 KiB
// serverDate.java
|
|
// -------------------------------------------
|
|
// (C) by Michael Peter Christen; mc@anomic.de
|
|
// first published on http://www.anomic.de
|
|
// Frankfurt, Germany, 2005
|
|
// last major change: 14.03.2005
|
|
//
|
|
// This program 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.
|
|
//
|
|
// 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 General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with this program; if not, write to the Free Software
|
|
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
//
|
|
// Using this software in any meaning (reading, learning, copying, compiling,
|
|
// running) means that you agree that the Author(s) is (are) not responsible
|
|
// for cost, loss of data or any harm that may be caused directly or indirectly
|
|
// by usage of this softare or this documentation. The usage of this software
|
|
// is on your own risk. The installation and usage (starting/running) of this
|
|
// software may allow other people or application to access your computer and
|
|
// any attached devices and is highly dependent on the configuration of the
|
|
// software which must be done by the user of the software; the author(s) is
|
|
// (are) also not responsible for proper configuration and usage of the
|
|
// software, even if provoked by documentation provided together with
|
|
// the software.
|
|
//
|
|
// Any changes to this file according to the GPL as documented in the file
|
|
// gpl.txt aside this file in the shipment you received can be done to the
|
|
// lines that follows this copyright notice here, but changes must not be
|
|
// done inside the copyright notive above. A re-distribution must contain
|
|
// the intact and unchanged copyright notice.
|
|
// Contributions and changes to the program code must be marked as such.
|
|
|
|
|
|
// this class is needed to replace the slow java built-in date method by a faster version
|
|
|
|
package de.anomic.server;
|
|
|
|
import java.text.SimpleDateFormat;
|
|
import java.util.Calendar;
|
|
import java.util.Date;
|
|
import java.util.GregorianCalendar;
|
|
import java.util.Locale;
|
|
import java.util.TimeZone;
|
|
|
|
public final class serverDate {
|
|
|
|
|
|
// statics
|
|
private final static long secondMillis = 1000;
|
|
private final static long minuteMillis = 60 * secondMillis;
|
|
private final static long hourMillis = 60 * minuteMillis;
|
|
private final static long dayMillis = 24 * hourMillis;
|
|
private final static long normalyearMillis = 365 * dayMillis;
|
|
private final static long leapyearMillis = 366 * dayMillis;
|
|
private final static int january = 31, normalfebruary = 28, leapfebruary = 29, march = 31,
|
|
april = 30, may = 31, june = 30, july = 31, august = 31,
|
|
september = 30, october = 31, november = 30, december = 31;
|
|
private final static int[] dimnormal = {january, normalfebruary, march, april, may, june, july, august, september, october, november, december};
|
|
private final static int[] dimleap = {january, leapfebruary, march, april, may, june, july, august, september, october, november, december};
|
|
private final static String[] wkday = {"Mon","Tue","Wed","Thu","Fri","Sat","Sun"};
|
|
private final static String[] month = {"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};
|
|
|
|
// pre-calculation of time tables
|
|
private final static long[] dimnormalacc, dimleapacc;
|
|
private static long[] utimeyearsacc;
|
|
static {
|
|
long millis = 0;
|
|
utimeyearsacc = new long[67];
|
|
for (int i = 0; i < 67; i++) {
|
|
utimeyearsacc[i] = millis;
|
|
millis += ((i & 3) == 0) ? leapyearMillis : normalyearMillis;
|
|
}
|
|
millis = 0;
|
|
dimnormalacc = new long[12];
|
|
for (int i = 0; i < 12; i++) {
|
|
dimnormalacc[i] = millis;
|
|
millis += (dayMillis * dimnormal[i]);
|
|
}
|
|
millis = 0;
|
|
dimleapacc = new long[12];
|
|
for (int i = 0; i < 12; i++) {
|
|
dimleapacc[i] = millis;
|
|
millis += (dayMillis * dimleap[i]);
|
|
}
|
|
}
|
|
|
|
// class variables
|
|
private int milliseconds, seconds, minutes, hours, days, months, years; // years since 1970
|
|
private int dow; // day-of-week
|
|
private long utime;
|
|
|
|
public serverDate() {
|
|
this(System.currentTimeMillis());
|
|
}
|
|
|
|
public serverDate(long utime) {
|
|
// set the time as the difference, measured in milliseconds,
|
|
// between the current time and midnight, January 1, 1970 UTC/GMT
|
|
this.utime = utime;
|
|
dow = (int) (((utime / dayMillis) + 3) % 7);
|
|
years = (int) (utime / normalyearMillis); // a guess
|
|
if (utime < utimeyearsacc[years]) years--; // the correction
|
|
long remain = utime - utimeyearsacc[years];
|
|
months = (int) (remain / (29 * dayMillis)); // a guess
|
|
if ((years & 3) == 0) {
|
|
if (remain < dimleapacc[months]) months--; // correction
|
|
remain = remain - dimleapacc[months];
|
|
} else {
|
|
if (remain < dimnormalacc[months]) months--; // correction
|
|
remain = remain - dimnormalacc[months];
|
|
}
|
|
days = (int) (remain / dayMillis); remain = remain % dayMillis;
|
|
hours = (int) (remain / hourMillis); remain = remain % hourMillis;
|
|
minutes = (int) (remain / minuteMillis); remain = remain % minuteMillis;
|
|
seconds = (int) (remain / secondMillis); remain = remain % secondMillis;
|
|
milliseconds = (int) remain;
|
|
}
|
|
|
|
private void calcUTime() {
|
|
this.utime = utimeyearsacc[years] + dimleapacc[months - 1] + dayMillis * (days - 1) +
|
|
hourMillis * hours + minuteMillis * minutes + secondMillis * seconds + milliseconds;
|
|
this.dow = (int) (((utime / dayMillis) + 3) % 7);
|
|
}
|
|
|
|
public serverDate(String datestring) throws java.text.ParseException {
|
|
// parse a date string; othervise throw a java.text.ParseException
|
|
if ((datestring.length() == 14) || (datestring.length() == 17)) {
|
|
// parse a ShortString
|
|
try {years = Integer.parseInt(datestring.substring(0, 4)) - 1970;} catch (NumberFormatException e) {
|
|
throw new java.text.ParseException("serverDate '" + datestring + "' wrong year", 0);
|
|
}
|
|
if (years < 0) throw new java.text.ParseException("serverDate '" + datestring + "' wrong year", 0);
|
|
try {months = Integer.parseInt(datestring.substring(4, 6)) - 1;} catch (NumberFormatException e) {
|
|
throw new java.text.ParseException("serverDate '" + datestring + "' wrong month", 4);
|
|
}
|
|
if ((months < 0) || (months > 11)) throw new java.text.ParseException("serverDate '" + datestring + "' wrong month", 4);
|
|
try {days = Integer.parseInt(datestring.substring(6, 8)) - 1;} catch (NumberFormatException e) {
|
|
throw new java.text.ParseException("serverDate '" + datestring + "' wrong day", 6);
|
|
}
|
|
if ((days < 0) || (days > 30)) throw new java.text.ParseException("serverDate '" + datestring + "' wrong day", 6);
|
|
try {hours = Integer.parseInt(datestring.substring(8, 10));} catch (NumberFormatException e) {
|
|
throw new java.text.ParseException("serverDate '" + datestring + "' wrong hour", 8);
|
|
}
|
|
if ((hours < 0) || (hours > 23)) throw new java.text.ParseException("serverDate '" + datestring + "' wrong hour", 8);
|
|
try {minutes = Integer.parseInt(datestring.substring(10, 12));} catch (NumberFormatException e) {
|
|
throw new java.text.ParseException("serverDate '" + datestring + "' wrong minute", 10);
|
|
}
|
|
if ((minutes < 0) || (minutes > 59)) throw new java.text.ParseException("serverDate '" + datestring + "' wrong minute", 10);
|
|
try {seconds = Integer.parseInt(datestring.substring(12, 14));} catch (NumberFormatException e) {
|
|
throw new java.text.ParseException("serverDate '" + datestring + "' wrong second", 12);
|
|
}
|
|
if ((seconds < 0) || (seconds > 59)) throw new java.text.ParseException("serverDate '" + datestring + "' wrong second", 12);
|
|
if (datestring.length() == 17) {
|
|
try {milliseconds = Integer.parseInt(datestring.substring(14, 17));} catch (NumberFormatException e) {
|
|
throw new java.text.ParseException("serverDate '" + datestring + "' wrong millisecond", 14);
|
|
}
|
|
} else {
|
|
milliseconds = 0;
|
|
}
|
|
if ((milliseconds < 0) || (milliseconds > 999)) throw new java.text.ParseException("serverDate '" + datestring + "' wrong millisecond", 14);
|
|
calcUTime();
|
|
return;
|
|
}
|
|
throw new java.text.ParseException("serverDate '" + datestring + "' format unknown", 0);
|
|
}
|
|
|
|
public String toString() {
|
|
return "utime=" + utime + ", year=" + (years + 1970) +
|
|
", month=" + (months + 1) + ", day=" + (days + 1) +
|
|
", hour=" + hours + ", minute=" + minutes +
|
|
", second=" + seconds + ", millis=" + milliseconds +
|
|
", day-of-week=" + wkday[dow];
|
|
}
|
|
|
|
public String toShortString(boolean millis) {
|
|
// returns a "yyyyMMddHHmmssSSS"
|
|
byte[] result = new byte[(millis) ? 17 : 14];
|
|
int x = 1970 + years;
|
|
result[ 0] = (byte) (48 + (x / 1000)); x = x % 1000;
|
|
result[ 1] = (byte) (48 + (x / 100)); x = x % 100;
|
|
result[ 2] = (byte) (48 + (x / 10)); x = x % 10;
|
|
result[ 3] = (byte) (48 + x);
|
|
x = months + 1;
|
|
result[ 4] = (byte) (48 + (x / 10));
|
|
result[ 5] = (byte) (48 + (x % 10));
|
|
x = days + 1;
|
|
result[ 6] = (byte) (48 + (x / 10));
|
|
result[ 7] = (byte) (48 + (x % 10));
|
|
result[ 8] = (byte) (48 + (hours / 10));
|
|
result[ 9] = (byte) (48 + (hours % 10));
|
|
result[10] = (byte) (48 + (minutes / 10));
|
|
result[11] = (byte) (48 + (minutes % 10));
|
|
result[12] = (byte) (48 + (seconds / 10));
|
|
result[13] = (byte) (48 + (seconds % 10));
|
|
if (millis) {
|
|
x = milliseconds;
|
|
result[14] = (byte) (48 + (x / 100)); x = x % 100;
|
|
result[15] = (byte) (48 + (x / 10)); x = x % 10;
|
|
result[16] = (byte) (48 + x);
|
|
}
|
|
return new String(result);
|
|
}
|
|
|
|
/*
|
|
private static String format(int c, int len) {
|
|
String s = "" + c;
|
|
while (s.length() < len) s = "0" + s;
|
|
return s;
|
|
}
|
|
*/
|
|
|
|
// the following is only here to compare the kelondroDate with java-Date:
|
|
private static TimeZone GMTTimeZone = TimeZone.getTimeZone("GMT");
|
|
private static Calendar gregorian = new GregorianCalendar(GMTTimeZone);
|
|
private static SimpleDateFormat testSFormatter = new SimpleDateFormat("yyyyMMddHHmmss");
|
|
private static SimpleDateFormat testLFormatter = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss 'GMT'", Locale.US);
|
|
|
|
public static String testSDateShortString() {
|
|
return testSFormatter.format(gregorian.getTime());
|
|
}
|
|
|
|
public static String intervalToString(long millis) {
|
|
try {
|
|
long mins = millis / 60000;
|
|
|
|
StringBuffer uptime = new StringBuffer();
|
|
|
|
int uptimeDays = (int) (Math.floor(mins/1440));
|
|
int uptimeHours = (int) (Math.floor(mins/60)%24);
|
|
int uptimeMins = (int) mins%60;
|
|
|
|
uptime.append(uptimeDays)
|
|
.append(((uptimeDays == 1)?" day ":" days "))
|
|
.append((uptimeHours < 10)?"0":"")
|
|
.append(uptimeHours)
|
|
.append(":")
|
|
.append((uptimeMins < 10)?"0":"")
|
|
.append(uptimeMins);
|
|
|
|
return uptime.toString();
|
|
} catch (Exception e) {
|
|
return "unknown";
|
|
}
|
|
}
|
|
|
|
public static void main(String[] args) {
|
|
//System.out.println("kelondroDate is (" + new kelondroDate().toString() + ")");
|
|
System.out.println("serverDate : " + new serverDate().toShortString(false));
|
|
System.out.println(" javaDate : " + testSDateShortString());
|
|
System.out.println("serverDate : " + new serverDate().toString());
|
|
System.out.println(" JavaDate : " + testLFormatter.format(new Date()));
|
|
System.out.println("serverDate0: " + new serverDate(0).toShortString(false));
|
|
System.out.println(" JavaDate0: " + testSFormatter.format(new Date(0)));
|
|
System.out.println("serverDate0: " + new serverDate(0).toString());
|
|
System.out.println(" JavaDate0: " + testLFormatter.format(new Date(0)));
|
|
// parse test
|
|
try {
|
|
System.out.println("serverDate re-parse short: " + new serverDate(new serverDate().toShortString(false)).toShortString(true));
|
|
System.out.println("serverDate re-parse long : " + new serverDate(new serverDate().toShortString(true)).toShortString(true));
|
|
} catch (java.text.ParseException e) {
|
|
System.out.println("Parse Exception: " + e.getMessage() + ", pos " + e.getErrorOffset());
|
|
}
|
|
String testresult;
|
|
int cycles = 10000;
|
|
long start;
|
|
|
|
start = System.currentTimeMillis();
|
|
for (int i = 0; i < cycles; i++) testresult = new serverDate().toShortString(false);
|
|
System.out.println("time for " + cycles + " calls to serverDate:" + (System.currentTimeMillis() - start) + " milliseconds");
|
|
|
|
start = System.currentTimeMillis();
|
|
for (int i = 0; i < cycles; i++) testresult = testSDateShortString();
|
|
System.out.println("time for " + cycles + " calls to javaDate:" + (System.currentTimeMillis() - start) + " milliseconds");
|
|
}
|
|
}
|