2 * Copyright (C) 2001-2006 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 * and distribute linked combinations including the two. You must obey the
23 * GNU General Public License in all respects for all of the code used other than
24 * the above mentioned libraries. If you modify this file, you may extend this
25 * exception to your version of the file, but you are not obligated to do so.
26 * If you do not wish to do so, delete this exception statement from your version.
30 import java.text.SimpleDateFormat;
31 import java.util.Calendar;
32 import java.util.Date;
33 import java.util.GregorianCalendar;
34 import java.util.TimeZone;
36 public class DateTimeRoutines {
38 * private parameter-less constructor to prevent construction
40 protected DateTimeRoutines() {
43 private final static String NUMBER = "[0-9]*";
44 private final static String TWODIGITNUMBER = "[0-9][0-9]";
47 * Function to parse a <a href="http://www.w3.org/TR/NOTE-datetime">W3CDTF</a> formatted string.
50 * YYYY[-MM[-DD[Thh:mm[:ss[.s*]]TZD]]]
55 public static Date parseW3CDTFString(String aString) throws UtilExc, UtilFailure {
66 boolean negativeOffset = false;
69 SimpleParser parser = new SimpleParser(aString.trim());
70 String part = parser.parse(NUMBER);
71 year=Integer.parseInt(part);
72 if (parser.parses("-")) {
74 part = parser.parse(NUMBER);
75 month = Integer.parseInt(part);
76 if (parser.parses("-")) {
78 part = parser.parse(NUMBER);
79 day = Integer.parseInt(part);
80 if (parser.parses("T")) {
82 part = parser.parse(NUMBER);
83 hour = Integer.parseInt(part);
85 part = parser.parse(NUMBER);
86 minute = Integer.parseInt(part);
87 if (parser.parses(":")) {
89 part = parser.parse(NUMBER);
90 second = Integer.parseInt(part);
91 if (parser.parses("\\.")) {
93 part = parser.parse(NUMBER).substring(0,3);
94 while (part.length()<3)
96 millisecond = Integer.parseInt(part);
99 if (parser.parses("Z|\\+|-")) {
100 String sign = parser.parse("Z|\\+|-");
101 if (sign.equals("+") || sign.equals("-")) {
102 if (parser.parses(TWODIGITNUMBER)) {
103 part = parser.parse(TWODIGITNUMBER);
104 houroffset = Integer.parseInt(part);
106 if (parser.parses(":"))
108 if (parser.parses(TWODIGITNUMBER)) {
109 part = parser.parse(TWODIGITNUMBER);
110 minuteoffset = Integer.parseInt(part);
113 if (sign.equals("-")) {
123 String timeZoneID = "GMT";
125 timeZoneID = timeZoneID+"-";
126 timeZoneID = timeZoneID + StringRoutines.padStringLeft(Integer.toString(houroffset), 2, '0') +
127 StringRoutines.padStringLeft(Integer.toString(minuteoffset), 2, '0');
130 TimeZone zone = TimeZone.getTimeZone(timeZoneID);
132 Calendar calendar = new GregorianCalendar(zone);
133 calendar.set(year, month-1, day, hour, minute, second);
134 calendar.set(Calendar.MILLISECOND, millisecond);
136 return calendar.getTime();
138 catch (Throwable t) {
139 // logger.error("DateTimeFunctions.parseW3CDTFString: error parsing " + aString + ": " + t.toString());
141 throw new UtilFailure(t);
145 public static String advancedDateFormat(String aFormat, Date aDate, String aTimeZone) {
146 return advancedDateFormat(aFormat, aDate, TimeZone.getTimeZone(aTimeZone));
149 public static String advancedDateFormat(String aFormat, Date aDate, TimeZone aTimeZone) {
150 SimpleDateFormat simpleFormat = new SimpleDateFormat(aFormat);
152 simpleFormat.setTimeZone(aTimeZone);
153 return simpleFormat.format(aDate);
156 public static String dateToSortableString(Date aDate) {
157 return advancedDateFormat("yyyyMMddHHmmss", aDate, "GMT");