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 DateTimeFunctions {
40 * private parameter-less constructor to prevent construction
42 // private static LoggerWrapper logger = new LoggerWrapper("Utility.DatTimeFunctions");
45 private DateTimeFunctions() {
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 private final static String SPACE = "[\t\n\r ]*";
58 private final static String NUMBER = "[0-9]*";
59 private final static String TWODIGITNUMBER = "[0-9][0-9]";
60 private final static String FOURDIGITNUMBER = "[0-9][0-9][0-9][0-9]";
61 private final static String FRACTION = "(\\.[0-9]*)|)";
62 private final static String SIGN = "[-+]";
63 private final static String TZD = "(Z|(+|-)([0-9][0-9]:[0-9][0-9]|[0-9][0-9][0-9][0-9]))";
65 public static Date parseW3CDTFString(String aString) throws UtilExc, UtilFailure {
76 boolean negativeOffset = false;
79 SimpleParser parser = new SimpleParser(aString.trim());
80 String part = parser.parse(NUMBER);
81 year=Integer.parseInt(part);
82 if (parser.parses("-")) {
84 part = parser.parse(NUMBER);
85 month = Integer.parseInt(part);
86 if (parser.parses("-")) {
88 part = parser.parse(NUMBER);
89 day = Integer.parseInt(part);
90 if (parser.parses("T")) {
92 part = parser.parse(NUMBER);
93 hour = Integer.parseInt(part);
95 part = parser.parse(NUMBER);
96 minute = Integer.parseInt(part);
97 if (parser.parses(":")) {
99 part = parser.parse(NUMBER);
100 second = Integer.parseInt(part);
101 if (parser.parses("\\.")) {
103 part = parser.parse(NUMBER).substring(0,3);
104 while (part.length()<3)
106 millisecond = Integer.parseInt(part);
109 if (parser.parses("Z|\\+|-")) {
110 String sign = parser.parse("Z|\\+|-");
111 if (sign.equals("+") || sign.equals("-")) {
112 if (parser.parses(TWODIGITNUMBER)) {
113 part = parser.parse(TWODIGITNUMBER);
114 houroffset = Integer.parseInt(part);
116 if (parser.parses(":"))
118 if (parser.parses(TWODIGITNUMBER)) {
119 part = parser.parse(TWODIGITNUMBER);
120 minuteoffset = Integer.parseInt(part);
123 if (sign.equals("-")) {
134 String timeZoneID = "GMT";
136 timeZoneID = timeZoneID+"-";
137 timeZoneID = timeZoneID + StringRoutines.padStringLeft(Integer.toString(houroffset), 2, '0') +
138 StringRoutines.padStringLeft(Integer.toString(minuteoffset), 2, '0');
141 TimeZone zone = TimeZone.getTimeZone(timeZoneID);
143 Calendar calendar = new GregorianCalendar(zone);
144 calendar.set(year, month-1, day, hour, minute, second);
145 calendar.set(Calendar.MILLISECOND, millisecond);
147 return calendar.getTime();
149 catch (Throwable t) {
150 // logger.error("DateTimeFunctions.parseW3CDTFString: error parsing " + aString + ": " + t.toString());
152 throw new UtilFailure(t);
156 public static String advancedDateFormat(String aFormat, Date aDate, String aTimeZone) {
157 return advancedDateFormat(aFormat, aDate, TimeZone.getTimeZone(aTimeZone));
160 public static String advancedDateFormat(String aFormat, Date aDate, TimeZone aTimeZone) {
161 SimpleDateFormat simpleFormat = new SimpleDateFormat(aFormat);
163 simpleFormat.setTimeZone(aTimeZone);
164 return simpleFormat.format(aDate);
167 public static String dateToSortableString(Date aDate) {
168 return advancedDateFormat("yyyyMMddHHmmss", aDate, "GMT");