2 * Copyright (C) 2001, 2002 The Mir-coders group
4 * This file is part of Mir.
6 * Mir is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * Mir is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Mir; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * In addition, as a special exception, The Mir-coders gives permission to link
21 * the code of this program with any library licensed under the Apache Software License,
22 * The Sun (tm) Java Advanced Imaging library (JAI), The Sun JIMI library
23 * (or with modified versions of the above that use the same license as the above),
24 * and distribute linked combinations including the two. You must obey the
25 * GNU General Public License in all respects for all of the code used other than
26 * the above mentioned libraries. If you modify this file, you may extend this
27 * exception to your version of the file, but you are not obligated to do so.
28 * If you do not wish to do so, delete this exception statement from your version.
32 import java.text.SimpleDateFormat;
33 import java.util.Calendar;
34 import java.util.Date;
35 import java.util.GregorianCalendar;
36 import java.util.TimeZone;
38 public class DateTimeRoutines {
40 * private parameter-less constructor to prevent construction
42 protected DateTimeRoutines() {
45 private final static String NUMBER = "[0-9]*";
46 private final static String TWODIGITNUMBER = "[0-9][0-9]";
49 * Function to parse a <a href="http://www.w3.org/TR/NOTE-datetime">W3CDTF</a> formatted string.
52 * YYYY[-MM[-DD[Thh:mm[:ss[.s*]]TZD]]]
57 public static Date parseW3CDTFString(String aString) throws UtilExc, UtilFailure {
68 boolean negativeOffset = false;
71 SimpleParser parser = new SimpleParser(aString.trim());
72 String part = parser.parse(NUMBER);
73 year=Integer.parseInt(part);
74 if (parser.parses("-")) {
76 part = parser.parse(NUMBER);
77 month = Integer.parseInt(part);
78 if (parser.parses("-")) {
80 part = parser.parse(NUMBER);
81 day = Integer.parseInt(part);
82 if (parser.parses("T")) {
84 part = parser.parse(NUMBER);
85 hour = Integer.parseInt(part);
87 part = parser.parse(NUMBER);
88 minute = Integer.parseInt(part);
89 if (parser.parses(":")) {
91 part = parser.parse(NUMBER);
92 second = Integer.parseInt(part);
93 if (parser.parses("\\.")) {
95 part = parser.parse(NUMBER).substring(0,3);
96 while (part.length()<3)
98 millisecond = Integer.parseInt(part);
101 if (parser.parses("Z|\\+|-")) {
102 String sign = parser.parse("Z|\\+|-");
103 if (sign.equals("+") || sign.equals("-")) {
104 if (parser.parses(TWODIGITNUMBER)) {
105 part = parser.parse(TWODIGITNUMBER);
106 houroffset = Integer.parseInt(part);
108 if (parser.parses(":"))
110 if (parser.parses(TWODIGITNUMBER)) {
111 part = parser.parse(TWODIGITNUMBER);
112 minuteoffset = Integer.parseInt(part);
115 if (sign.equals("-")) {
125 String timeZoneID = "GMT";
127 timeZoneID = timeZoneID+"-";
128 timeZoneID = timeZoneID + StringRoutines.padStringLeft(Integer.toString(houroffset), 2, '0') +
129 StringRoutines.padStringLeft(Integer.toString(minuteoffset), 2, '0');
132 TimeZone zone = TimeZone.getTimeZone(timeZoneID);
134 Calendar calendar = new GregorianCalendar(zone);
135 calendar.set(year, month-1, day, hour, minute, second);
136 calendar.set(Calendar.MILLISECOND, millisecond);
138 return calendar.getTime();
140 catch (Throwable t) {
141 // logger.error("DateTimeFunctions.parseW3CDTFString: error parsing " + aString + ": " + t.toString());
143 throw new UtilFailure(t);
147 public static String advancedDateFormat(String aFormat, Date aDate, String aTimeZone) {
148 return advancedDateFormat(aFormat, aDate, TimeZone.getTimeZone(aTimeZone));
151 public static String advancedDateFormat(String aFormat, Date aDate, TimeZone aTimeZone) {
152 SimpleDateFormat simpleFormat = new SimpleDateFormat(aFormat);
154 simpleFormat.setTimeZone(aTimeZone);
155 return simpleFormat.format(aDate);
158 public static String dateToSortableString(Date aDate) {
159 return advancedDateFormat("yyyyMMddHHmmss", aDate, "GMT");