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679 lines
31 KiB
679 lines
31 KiB
// serverDate.java
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// -------------------------------------------
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// (C) by Michael Peter Christen; mc@yacy.net
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// (C) by by Bjoern 'Fuchs' Krombholz; fox.box@gmail.com
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2005, 2007
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// last major change: 14.03.2005
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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// this class is needed to replace the slow java built-in date method by a faster version
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package de.anomic.kelondro.util;
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import java.text.DateFormat;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.Calendar;
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import java.util.Date;
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import java.util.Locale;
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import java.util.NoSuchElementException;
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import java.util.StringTokenizer;
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import java.util.TimeZone;
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public final class DateFormatter {
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/** minimal date format without time information (fixed width: 8) */
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public static final String PATTERN_SHORT_DAY = "yyyyMMdd";
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/** minimal date format (fixed width: 14) */
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public static final String PATTERN_SHORT_SECOND = "yyyyMMddHHmmss";
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/** minimal date format including milliseconds (fixed width: 17) */
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public static final String PATTERN_SHORT_MILSEC = "yyyyMMddHHmmssSSS";
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/** default HTTP 1.1 header date format pattern */
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public static final String PATTERN_RFC1123 = "EEE, dd MMM yyyy HH:mm:ss zzz";
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/** date pattern used in older HTTP implementations */
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public static final String PATTERN_ANSIC = "EEE MMM d HH:mm:ss yyyy";
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/** date pattern used in older HTTP implementations */
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public static final String PATTERN_RFC1036 = "EEEE, dd-MMM-yy HH:mm:ss zzz";
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/** pattern for a W3C datetime variant of a non-localized ISO8601 date */
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public static final String PATTERN_ISO8601 = "yyyy-MM-dd'T'HH:mm:ss'Z'";
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/** predefined GMT TimeZone object */
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private static final TimeZone TZ_GMT = TimeZone.getTimeZone("GMT");
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/** predefined non-localized Calendar object for generic GMT dates */
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private static final Calendar CAL_GMT = Calendar.getInstance(TZ_GMT, Locale.US);
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/** Date formatter/parser for minimal yyyyMMdd pattern */
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private static final SimpleDateFormat FORMAT_SHORT_DAY = new SimpleDateFormat(PATTERN_SHORT_DAY);
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/** Date formatter/parser for minimal yyyyMMddHHmmss pattern */
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private static final SimpleDateFormat FORMAT_SHORT_SECOND = new SimpleDateFormat(PATTERN_SHORT_SECOND);
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/** Date formatter/parser for minimal yyyyMMddHHmmssSSS pattern */
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private static final SimpleDateFormat FORMAT_SHORT_MILSEC = new SimpleDateFormat(PATTERN_SHORT_MILSEC);
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/** Date formatter/non-sloppy parser for W3C datetime (ISO8601) in GMT/UTC */
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private static final SimpleDateFormat FORMAT_ISO8601 = new SimpleDateFormat(PATTERN_ISO8601);
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/** Date formatter/parser for standard compliant HTTP header dates (RFC 1123) */
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private static final SimpleDateFormat FORMAT_RFC1123 = new SimpleDateFormat(PATTERN_RFC1123, Locale.US);
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private static final SimpleDateFormat FORMAT_RFC1036 = new SimpleDateFormat(PATTERN_RFC1036, Locale.US);
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private static final SimpleDateFormat FORMAT_ANSIC = new SimpleDateFormat(PATTERN_ANSIC, Locale.US);
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/**
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* RFC 2616 requires that HTTP clients are able to parse all 3 different
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* formats. All times MUST be in GMT/UTC, but ...
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*/
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private static final SimpleDateFormat[] FORMATS_HTTP = new SimpleDateFormat[] {
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// RFC 1123/822 (Standard) "Mon, 12 Nov 2007 10:11:12 GMT"
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FORMAT_RFC1123,
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// RFC 1036/850 (old) "Monday, 12-Nov-07 10:11:12 GMT"
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FORMAT_RFC1036,
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// ANSI C asctime() "Mon Nov 12 10:11:12 2007"
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new SimpleDateFormat(PATTERN_ANSIC, Locale.US),
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};
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/** Initialization of static formats */
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static {
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// 2-digit dates are automatically parsed by SimpleDateFormat,
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// we need to detect the real year by adding 1900 or 2000 to
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// the year value starting with 1970
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CAL_GMT.setTimeInMillis(0);
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for (int i = 0; i < DateFormatter.FORMATS_HTTP.length; i++) {
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final SimpleDateFormat f = DateFormatter.FORMATS_HTTP[i];
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f.setTimeZone(TZ_GMT);
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f.set2DigitYearStart(CAL_GMT.getTime());
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}
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// we want GMT times on the SHORT formats as well as they don't support any timezone
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FORMAT_SHORT_DAY.setTimeZone(TZ_GMT);
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FORMAT_SHORT_SECOND.setTimeZone(TZ_GMT);
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FORMAT_SHORT_MILSEC.setTimeZone(TZ_GMT);
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FORMAT_ISO8601.setTimeZone(TZ_GMT);
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}
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/**
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* Parse a HTTP string representation of a date into a Date instance.
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* @param s The date String to parse.
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* @return The Date instance if successful, <code>null</code> otherwise.
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*/
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public static Date parseHTTPDate(String s) {
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s = s.trim();
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if ((s == null) || (s.length() < 9)) return null;
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for (int i = 0; i < FORMATS_HTTP.length; i++) {
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try {
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return parse(FORMATS_HTTP[i], s);
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} catch (final ParseException e) {
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// on ParseException try again with next parser
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}
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}
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// the method didn't return a Date, so we got an illegal String
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//serverLog.logSevere("HTTPC-header", "DATE ERROR (Parse): " + s);
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return null;
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}
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/**
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* Creates a String representation of a Date using the format defined
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* in ISO8601/W3C datetime
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* The result will be in UTC/GMT, e.g. "2007-12-19T10:20:30Z".
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*
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* @param date The Date instance to transform.
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* @return A fixed width (20 chars) ISO8601 date String.
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*/
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public static final String formatISO8601(final Date date) {
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if (date == null) return "";
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return format(FORMAT_ISO8601, date);
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}
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public static final String formatANSIC(final Date date) {
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if (date == null) return "";
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return format(FORMAT_ANSIC, date);
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}
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private static long lastRFC1123long = 0;
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private static String lastRFC1123string = "";
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public static final String formatRFC1123(final Date date) {
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if (date == null) return "";
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if (Math.abs(date.getTime() - lastRFC1123long) < 1000) {
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//System.out.println("date cache hit - " + lastRFC1123string);
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return lastRFC1123string;
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}
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String s = format(FORMAT_RFC1123, date);
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lastRFC1123long = date.getTime();
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lastRFC1123string = s;
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return s;
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}
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/**
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* Parse dates as defined in {@linkplain http://www.w3.org/TR/NOTE-datetime}.
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* This format (also specified in ISO8601) allows different "precisions".
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* The following lower precision versions for the complete date
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* "2007-12-19T10:20:30.567+0300" are allowed:<br>
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* "2007"<br>
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* "2007-12"<br>
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* "2007-12-19"<br>
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* "2007-12-19T10:20+0300<br>
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* "2007-12-19T10:20:30+0300<br>
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* "2007-12-19T10:20:30.567+0300<br>
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* Additionally a timezone offset of "+0000" can be substituted as "Z".<br>
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* Parsing is done in a fuzzy way. If there is an illegal character somewhere in
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* the String, the date parsed so far will be returned, e.g. the input
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* "2007-12-19FOO" would return a date that represents "2007-12-19".
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*
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* @param s
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* @return
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* @throws ParseException
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*/
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public static Date parseISO8601(final String s) throws ParseException {
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final Calendar cal = Calendar.getInstance(TZ_GMT, Locale.US);
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cal.clear();
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// split 2007-12-19T10:20:30.789+0500 into its parts
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// correct: yyyy['-'MM['-'dd['T'HH':'MM[':'ss['.'SSS]]('Z'|ZZZZZ)]]]
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final StringTokenizer t = new StringTokenizer(s, "-T:.Z+", true);
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if (s == null || t.countTokens() == 0)
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throw new ParseException("parseISO8601: Cannot parse '" + s + "'", 0);
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try {
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// year
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cal.set(Calendar.YEAR, Integer.parseInt(t.nextToken()));
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// month
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if (t.nextToken().equals("-")) {
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cal.set(Calendar.MONTH, Integer.parseInt(t.nextToken()) - 1);
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} else {
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return cal.getTime();
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}
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// day
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if (t.nextToken().equals("-")) {
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cal.set(Calendar.DAY_OF_MONTH, Integer.parseInt(t.nextToken()));
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} else {
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return cal.getTime();
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}
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// The standard says: if there is an hour there has to be a minute and a
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// timezone token, too.
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// hour
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if (t.nextToken().equals("T")) {
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final int hour = Integer.parseInt(t.nextToken());
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// no error, got hours
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int min = 0;
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int sec = 0;
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int msec = 0;
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if (t.nextToken().equals(":")) {
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min = Integer.parseInt(t.nextToken());
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// no error, got minutes
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// need TZ or seconds
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String token = t.nextToken();
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if (token.equals(":")) {
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sec = Integer.parseInt(t.nextToken());
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// need millisecs or TZ
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token = t.nextToken();
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if (token.equals(".")) {
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msec = Integer.parseInt(t.nextToken());
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// need TZ
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token = t.nextToken();
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}
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}
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// check for TZ data
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int offset;
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if (token.equals("Z")) {
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offset = 0;
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} else {
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int sign = 0;
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if (token.equals("+")) {
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sign = 1;
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} else if (token.equals("-")) {
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sign = -1;
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} else {
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// no legal TZ offset found
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return cal.getTime();
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}
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offset = sign * Integer.parseInt(t.nextToken()) * 10 * 3600;
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}
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cal.set(Calendar.ZONE_OFFSET, offset);
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}
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cal.set(Calendar.HOUR_OF_DAY, hour);
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cal.set(Calendar.MINUTE, min);
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cal.set(Calendar.SECOND, sec);
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cal.set(Calendar.MILLISECOND, msec);
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}
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} catch (final NoSuchElementException e) {
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// ignore this as it is perfectly fine to have non-complete date in this format
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} catch (final Exception e) {
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// catch all Exceptions and return what we parsed so far
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//serverLog.logInfo("SERVER", "parseISO8601: DATE ERROR with: '" + s + "' got so far: '" + cal.toString());
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}
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// in case we couldn't even parse a year
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if (!cal.isSet(Calendar.YEAR))
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throw new ParseException("parseISO8601: Cannot parse '" + s + "'", 0);
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return cal.getTime();
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}
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/**
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* Note: The short day format doesn't include any timezone information. This method
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* transforms the date into the GMT/UTC timezone. Example: If the local system time is,
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* 2007-12-18 01:15:00 +0200, then the resulting String will be "2007-12-17".
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* In case you need a format with a timezon offset, use {@link #formatShortDay(TimeZone)}
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* @return a String representation of the current system date in GMT using the
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* short day format, e.g. "20071218".
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*/
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public static String formatShortDay() {
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return format(FORMAT_SHORT_DAY, new Date());
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}
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/**
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* @see #formatShortDay()
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* @param date the Date to transform
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*/
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public static String formatShortDay(final Date date) {
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return format(FORMAT_SHORT_DAY, date);
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}
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/**
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* This should only be used, if you need a short date String that needs to be aligned to
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* a special timezone other than GMT/UTC. Be aware that a receiver won't be able to
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* recreate the original Date without additional timezone information.
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* @see #formatShortDay()
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* @param date the Date to transform
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* @param tz a TimeZone the resulting date String should be aligned to.
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*/
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public static String formatShortDay(final Date date, final TimeZone tz) {
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return format(FORMAT_SHORT_DAY, date, tz);
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}
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/**
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* Parse a String representation of a Date in short day format assuming the date
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* is aligned to the GMT/UTC timezone. An example for such a date string is "20071218".
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* @see #formatShortDay()
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* @throws ParseException The exception is thrown if an error occured during while parsing
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* the String.
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*/
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public static Date parseShortDay(final String timeString) throws ParseException {
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return parse(FORMAT_SHORT_DAY, timeString);
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}
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/**
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* Returns the current date in short second format which is a fixed width (14 chars)
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* String including the date and the time like "20071218233510". The result is in GMT/UTC.
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* @see #formatShortDay()
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*/
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public static String formatShortSecond() {
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return formatShortSecond(new Date());
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}
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/**
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* Identical to {@link #formatShortDay(Date)}, but for short second format.
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*/
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public static String formatShortSecond(final Date date) {
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return format(FORMAT_SHORT_SECOND, date);
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}
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public static String formatShortMilliSecond(final Date date) {
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return format(FORMAT_SHORT_MILSEC, date);
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}
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/**
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* Identical to {@link #formatShortDay(Date, TimeZone)}, but for short second format.
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*/
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public static String formatShortSecond(final Date date, final TimeZone tz) {
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return format(FORMAT_SHORT_SECOND, date, tz);
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}
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//TODO check the following 2 parse methods for correct use (GMT vs. different timezone)
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/**
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* Like {@link #parseShortDay(String)}, but for the "short second" format which is short date
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* plus a 6 digit day time value, like "20071218233510". The String should be in GMT/UTC to
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* get a correct Date.
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*/
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public static Date parseShortSecond(final String timeString) throws ParseException {
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return parse(FORMAT_SHORT_SECOND, timeString);
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}
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public static Date parseShortMilliSecond(final String timeString) throws ParseException {
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return parse(FORMAT_SHORT_MILSEC, timeString);
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}
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/**
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* Like {@link #parseShortSecond(String)} using additional timezone information provided in an
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* offset String, like "+0100" for CET.
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*/
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public static Date parseShortSecond(final String remoteTimeString, final String remoteUTCOffset) {
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// FIXME: This method returns an incorrect date, check callers!
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// ex: de.anomic.server.serverDate.parseShortSecond("20070101120000", "+0200").toGMTString()
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// => 1 Jan 2007 13:00:00 GMT
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if (remoteTimeString == null || remoteTimeString.length() == 0) { return new Date(); }
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if (remoteUTCOffset == null || remoteUTCOffset.length() == 0) { return new Date(); }
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try {
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return new Date(parse(FORMAT_SHORT_SECOND, remoteTimeString).getTime() - DateFormatter.UTCDiff() + DateFormatter.UTCDiff(remoteUTCOffset));
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} catch (final java.text.ParseException e) {
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//serverLog.logFinest("parseUniversalDate", e.getMessage() + ", remoteTimeString=[" + remoteTimeString + "]");
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return new Date();
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} catch (final java.lang.NumberFormatException e) {
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//serverLog.logFinest("parseUniversalDate", e.getMessage() + ", remoteTimeString=[" + remoteTimeString + "]");
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return new Date();
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}
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}
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/**
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* Format a time inteval in milliseconds into a String of the form
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* X 'day'['s'] HH':'mm
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*/
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public static String formatInterval(final long millis) {
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try {
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final long mins = millis / 60000;
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final StringBuilder uptime = new StringBuilder();
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final int uptimeDays = (int) (Math.floor(mins/1440.0));
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final int uptimeHours = (int) (Math.floor(mins/60.0)%24);
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final int uptimeMins = (int) mins%60;
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uptime.append(uptimeDays)
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.append(((uptimeDays == 1)?" day ":" days "))
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.append((uptimeHours < 10)?"0":"")
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.append(uptimeHours)
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.append(":")
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.append((uptimeMins < 10)?"0":"")
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.append(uptimeMins);
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return uptime.toString();
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} catch (final Exception e) {
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return "unknown";
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}
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}
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/** called by all public format...(..., TimeZone) methods */
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private static String format(final SimpleDateFormat format, final Date date, final TimeZone tz) {
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String result;
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synchronized (format) {
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final TimeZone bakTZ = format.getTimeZone();
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format.setTimeZone(tz == null ? TZ_GMT : tz);
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result = format.format(date);
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format.setTimeZone(bakTZ);
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}
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return result;
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}
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/** called by all public format...(...) methods */
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private static String format(final SimpleDateFormat format, final Date date) {
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synchronized (format) {
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return format.format(date);
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}
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}
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/** calles by all public parse...(...) methods */
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private static Date parse(final SimpleDateFormat format, final String dateString) throws ParseException {
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synchronized (format) {
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return format.parse(dateString);
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}
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}
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// statics
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public final static long secondMillis = 1000;
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public final static long minuteMillis = 60 * secondMillis;
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public final static long hourMillis = 60 * minuteMillis;
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public final static long dayMillis = 24 * hourMillis;
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public final static long normalyearMillis = 365 * dayMillis;
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public final static long leapyearMillis = 366 * dayMillis;
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public final static int january = 31, normalfebruary = 28, leapfebruary = 29, march = 31,
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april = 30, may = 31, june = 30, july = 31, august = 31,
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september = 30, october = 31, november = 30, december = 31;
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public final static int[] dimnormal = {january, normalfebruary, march, april, may, june, july, august, september, october, november, december};
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public final static int[] dimleap = {january, leapfebruary, march, april, may, june, july, august, september, october, november, december};
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public final static String[] wkday = {"Mon","Tue","Wed","Thu","Fri","Sat","Sun"};
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//private final static String[] month = {"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};
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// find out time zone and DST offset
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private static Calendar thisCalendar = Calendar.getInstance();
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// pre-calculation of time tables
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private final static long[] dimnormalacc = new long[12], dimleapacc = new long[12];
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private final static long[] utimeyearsacc = new long[67];
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static {
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long millis = 0;
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for (int i = 0; i < 67; i++) {
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utimeyearsacc[i] = millis;
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millis += ((i & 3) == 0) ? leapyearMillis : normalyearMillis;
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}
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millis = 0;
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for (int i = 0; i < 12; i++) {
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dimnormalacc[i] = millis;
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millis += (dayMillis * dimnormal[i]);
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}
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millis = 0;
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for (int i = 0; i < 12; i++) {
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dimleapacc[i] = millis;
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millis += (dayMillis * dimleap[i]);
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}
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}
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// class variables
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private int milliseconds, seconds, minutes, hours, days, months, years; // years since 1970
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private int dow; // day-of-week
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private long utime;
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public static String UTCDiffString() {
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// we express the UTC Difference in 5 digits:
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// SHHMM
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// S ::= '+'|'-'
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// HH ::= '00'|'01'|'02'|'03'|'04'|'05'|'06'|'07'|'08'|'09'|'10'|'11'|'12'
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// MM ::= '00'|'15'|'30'|'45'
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// since there are some places on earth where there is a time shift of half an hour
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// we need too show also the minutes of the time shift
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// Examples: http://www.timeanddate.com/library/abbreviations/timezones/
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final long offsetHours = UTCDiff();
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final int om = Math.abs((int) (offsetHours / minuteMillis)) % 60;
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final int oh = Math.abs((int) (offsetHours / hourMillis));
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String diff = Integer.toString(om);
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if (diff.length() < 2) diff = "0" + diff;
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diff = Integer.toString(oh) + diff;
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if (diff.length() < 4) diff = "0" + diff;
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if (offsetHours < 0) {
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return "-" + diff;
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}
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return "+" + diff;
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}
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public static long UTCDiff() {
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// DST_OFFSET is dependent on the time of the Calendar, so it has to be updated
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// to get the correct current offset
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synchronized(thisCalendar) {
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thisCalendar.setTimeInMillis(System.currentTimeMillis());
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final long zoneOffsetHours = thisCalendar.get(Calendar.ZONE_OFFSET);
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final long DSTOffsetHours = thisCalendar.get(Calendar.DST_OFFSET);
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return zoneOffsetHours + DSTOffsetHours;
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}
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}
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public static long UTCDiff(final String diffString) {
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if (diffString.length() != 5) throw new IllegalArgumentException("UTC String malformed (wrong size):" + diffString);
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boolean ahead = true;
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if (diffString.charAt(0) == '+') ahead = true;
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else if (diffString.charAt(0) == '-') ahead = false;
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else throw new IllegalArgumentException("UTC String malformed (wrong sign):" + diffString);
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final long oh = Long.parseLong(diffString.substring(1, 3));
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final long om = Long.parseLong(diffString.substring(3));
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return ((ahead) ? (long) 1 : (long) -1) * (oh * hourMillis + om * minuteMillis);
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}
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public static long correctedUTCTime() {
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return System.currentTimeMillis() - UTCDiff();
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}
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public DateFormatter() {
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this(System.currentTimeMillis());
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}
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public DateFormatter(final long utime) {
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// set the time as the difference, measured in milliseconds,
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// between the current time and midnight, January 1, 1970 UTC/GMT
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this.utime = utime;
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dow = (int) (((utime / dayMillis) + 3) % 7);
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years = (int) (utime / normalyearMillis); // a guess
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if (utime < utimeyearsacc[years]) years--; // the correction
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long remain = utime - utimeyearsacc[years];
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months = (int) (remain / (29 * dayMillis)); // a guess
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if (months > 11) months = 11;
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if ((years & 3) == 0) {
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if (remain < dimleapacc[months]) months--; // correction
|
|
remain = remain - dimleapacc[months];
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} else {
|
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if (remain < dimnormalacc[months]) months--; // correction
|
|
remain = remain - dimnormalacc[months];
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|
}
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|
days = (int) (remain / dayMillis); remain = remain % dayMillis;
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|
hours = (int) (remain / hourMillis); remain = remain % hourMillis;
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minutes = (int) (remain / minuteMillis); remain = remain % minuteMillis;
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seconds = (int) (remain / secondMillis); remain = remain % secondMillis;
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milliseconds = (int) remain;
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}
|
|
|
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private void calcUTime() {
|
|
this.utime = utimeyearsacc[years] + dimleapacc[months - 1] + dayMillis * (days - 1) +
|
|
hourMillis * hours + minuteMillis * minutes + secondMillis * seconds + milliseconds;
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|
this.dow = (int) (((utime / dayMillis) + 3) % 7);
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|
}
|
|
|
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public DateFormatter(final String datestring) throws java.text.ParseException {
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// parse a date string; othervise throw a java.text.ParseException
|
|
if ((datestring.length() == 14) || (datestring.length() == 17)) {
|
|
// parse a ShortString
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|
try {years = Integer.parseInt(datestring.substring(0, 4)) - 1970;} catch (final 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 (final NumberFormatException e) {
|
|
throw new java.text.ParseException("serverDate '" + datestring + "' wrong month", 4);
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|
}
|
|
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 (final 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 (final 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 (final 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 (final 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 (final 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(final boolean millis) {
|
|
// returns a "yyyyMMddHHmmssSSS"
|
|
final 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);
|
|
}
|
|
|
|
public static long remainingTime(final long start, final long due, final long minimum) {
|
|
if (due < 0) return -1;
|
|
final long r = due + start - System.currentTimeMillis();
|
|
if (r <= 0) return minimum;
|
|
return r;
|
|
}
|
|
|
|
public static void main(final String[] args) {
|
|
//System.out.println("kelondroDate is (" + new kelondroDate().toString() + ")");
|
|
System.out.println("offset is " + (UTCDiff()/1000/60/60) + " hours, javaDate is " + new Date() + ", correctedDate is " + new Date(correctedUTCTime()));
|
|
System.out.println("serverDate : " + new DateFormatter().toShortString(false));
|
|
System.out.println(" javaDate : " + formatShortSecond());
|
|
System.out.println("serverDate : " + new DateFormatter().toString());
|
|
System.out.println(" JavaDate : " + DateFormat.getDateInstance().format(new Date()));
|
|
System.out.println("serverDate0: " + new DateFormatter(0).toShortString(false));
|
|
System.out.println(" JavaDate0: " + format(FORMAT_SHORT_SECOND, new Date(0)));
|
|
System.out.println("serverDate0: " + new DateFormatter(0).toString());
|
|
System.out.println(" JavaDate0: " + DateFormat.getDateInstance().format(new Date(0)));
|
|
// parse test
|
|
try {
|
|
System.out.println("serverDate re-parse short: " + new DateFormatter(new DateFormatter().toShortString(false)).toShortString(true));
|
|
System.out.println("serverDate re-parse long : " + new DateFormatter(new DateFormatter().toShortString(true)).toShortString(true));
|
|
} catch (final java.text.ParseException e) {
|
|
System.out.println("Parse Exception: " + e.getMessage() + ", pos " + e.getErrorOffset());
|
|
}
|
|
//String testresult;
|
|
final int cycles = 10000;
|
|
long start;
|
|
|
|
final String[] testresult = new String[10000];
|
|
start = System.currentTimeMillis();
|
|
for (int i = 0; i < cycles; i++) testresult[i] = new DateFormatter().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[i] = format(FORMAT_SHORT_SECOND, new Date());
|
|
System.out.println("time for " + cycles + " calls to javaDate:" + (System.currentTimeMillis() - start) + " milliseconds");
|
|
}
|
|
}
|