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1 package org.columba.calendar.parser;
19
20 import java.text.DateFormat  ;
21 import java.text.ParseException ;
22 import java.text.SimpleDateFormat ;
23 import java.util.Calendar ;
24 import java.util.Date ;
25 import java.util.TimeZone ;
26
27 import net.fortuna.ical4j.util.TimeZones;
28
29 public class DateParser {
30
31 private static final String DEFAULT_PATTERN = "yyyyMMdd'T'HHmmss";
32
33 private static final String UTC_PATTERN = "yyyyMMdd'T'HHmmss'Z'";
34
35
38 private static DateFormat defaultFormat = new SimpleDateFormat (
39 DEFAULT_PATTERN);
40
41
44 private static DateFormat utcFormat = new SimpleDateFormat (UTC_PATTERN);
45 {
46 utcFormat.setTimeZone(TimeZone.getTimeZone(TimeZones.UTC_ID));
47 }
48
49 public DateParser() {
50 super();
51 }
52
53 public static String createStringFromCalendar(Calendar calendar) {
54 return DateFormat.getInstance().format(calendar.getTime());
55 }
56
57 public static String createDateStringFromCalendar(Calendar calendar) {
58 long millis = calendar.getTimeInMillis();
59 Date date = new Date (millis);
60 StringBuffer b = new StringBuffer (utcFormat.format(date));
61
62 return b.toString();
67
68 }
69
70 public static Calendar createCalendarFromDateString(String dateString) {
71
72 if (dateString == null)
73 throw new IllegalArgumentException ("dateString == null");
74
75 if (dateString.length() == 0)
76 throw new IllegalArgumentException ("dateString.length() == 0");
77
78 long time = -1;
79 try {
80 time = utcFormat.parse(dateString).getTime();
81 } catch (ParseException pe) {
82 defaultFormat.setTimeZone(TimeZone.getDefault());
83 try {
84 time = defaultFormat.parse(dateString).getTime();
85 } catch (ParseException e) {
86 e.printStackTrace();
87 }
88 }
89
90 if (time == -1)
91 return null;
92 Calendar cal = Calendar.getInstance();
93 cal.setTimeInMillis(time);
94 return cal;
95
96 }
97
98 public static Calendar createCalendarFromString(String str) {
99 if (str == null)
100 throw new IllegalArgumentException ("str == null");
101
102 if (str.length() == 0)
103 throw new IllegalArgumentException ("str.length() == 0");
104
105 Calendar c = Calendar.getInstance();
106
107 try {
108 Date d = DateFormat.getInstance().parse(str);
109 c.setTime(d);
110 } catch (ParseException e) {
111 e.printStackTrace();
112 }
113
114 return c;
115 }
116
117 }
118 |
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