public String getSIF() {
StringBuffer xml = new StringBuffer();
List<Property> xvCalendarProperties = getXVCalendarProperties();
openXMLTag(xml, SIFCalendar.TIME_ZONE);
for (Property property : xvCalendarProperties) {
if ("TZ".equals(property.getName())) {
addXMLNode(xml, SIFCalendar.TIME_ZONE_BASIC_OFFSET, property.getValue());
}
if ("DAYLIGHT".equals(property.getName())) {
String dl = property.getValue();
if (!"FALSE".equalsIgnoreCase(dl)) {
openXMLTag(xml, SIFCalendar.TIME_ZONE_DAYLIGHT);
String[] dlParts = dl.split(";");
addXMLNode(xml, SIFCalendar.TIME_ZONE_DST_OFFSET, dlParts[1]);
addXMLNode(xml, SIFCalendar.TIME_ZONE_DST_START, dlParts[2]);
addXMLNode(xml, SIFCalendar.TIME_ZONE_DST_END, dlParts[3]);
addXMLNode(xml, SIFCalendar.TIME_ZONE_DST_NAME, (dlParts[4] == null) ? "" : dlParts[4]);
addXMLNode(
xml, SIFCalendar.TIME_ZONE_STANDARD_NAME, (dlParts[5] == null) ? "" : dlParts[5]);
closeXMLTag(xml, SIFCalendar.TIME_ZONE_DAYLIGHT);
} else {
// When DAYLIGHT is FALSE does not send <DayLight/>
}
}
}
closeXMLTag(xml, SIFCalendar.TIME_ZONE);
return xml.toString();
}
public void testTimeZoneHelperToXVCalendarBogota() {
TimeZoneHelper vctz =
new TimeZoneHelper(
"America/Bogota",
1167609600000L, // 01 Jan 2007 @ 00:00:00 UTC
1349049600000L); // 01 Oct 2012 @ 00:00:00 UTC
Property tz = vctz.getTZ();
List<Property> dayLightList = vctz.getDaylightList();
assertEquals(1, dayLightList.size());
assertEquals("TZ", tz.getName());
assertEquals("-0500", tz.getValue());
assertEquals("DAYLIGHT", dayLightList.get(0).getName());
assertEquals("FALSE", dayLightList.get(0).getValue());
}
/**
* Creates a new instance of TimeZoneHelper on the basis of the information extracted from a
* vCalendar (1.0) item.
*
* @param tz the TZ property
* @param daylightList a List containing all DAYLIGHT properties
* @throws java.lang.Exception
*/
public TimeZoneHelper(Property tz, List<Property> daylightList) throws Exception {
setFormattersToUTC();
this.name = ""; // vCalendar (1.0) has no time zone identifier because
// there's just one time zone per calendar item
if ((tz == null) || (tz.getValue() == null) || (tz.getValue().length() == 0)) {
throw new Exception("No TZ property");
}
basicOffset = parseOffset(tz.getValue());
for (Property transition : daylightList) {
if (transition.getValue() == null) {
continue;
}
if (transition.getValue().startsWith("TRUE;")) {
String[] daylight = transition.getValue().split(";");
String summerOffsetString = daylight[1].replaceAll("[\\+\\-:]", "") + "00";
int summerOffset = 3600000 * Integer.parseInt(summerOffsetString.substring(0, 2));
summerOffset += 60000 * Integer.parseInt(summerOffsetString.substring(2, 4));
if (daylight[1].startsWith("-")) {
summerOffset = -summerOffset;
}
long summerStart = parseDateTime(daylight[2]);
String summerTimeName;
if (daylight.length >= 5) {
summerTimeName = daylight[4];
} else {
summerTimeName = "";
}
TimeZoneTransition summerTime =
new TimeZoneTransition(summerOffset, summerStart, summerTimeName);
long summerEnd = parseDateTime(daylight[3]);
String standardTimeName;
if (daylight.length >= 6) {
standardTimeName = daylight[5];
} else {
standardTimeName = "";
}
TimeZoneTransition standardTime =
new TimeZoneTransition(basicOffset, summerEnd, standardTimeName);
transitions.add(summerTime);
transitions.add(standardTime);
}
}
}
/**
* Creates a new instance of TimeZoneHelper on the basis of the information extracted from an
* iCalendar (vCalendar 2.0) item.
*
* @param vTimeZone
* @param from the start of the relevant time interval for the generation of transitions (an
* istant expressed as a long)
* @param to the end of the relevant time interval for the generation of transitions (an istant
* expressed as a long)
* @throws java.lang.Exception
*/
public TimeZoneHelper(VTimezone vTimeZone, long from, long to) throws Exception {
setFormattersToUTC();
Property tzID = vTimeZone.getProperty("TZID");
if (tzID != null) {
this.name = tzID.getValue();
// Try and skip the parsing by using just the TZID:
String extracted = extractID(name);
if (extracted != null) {
cacheID(extracted);
processID(extracted, from, to);
return;
}
List<VComponent> standardTimeRules = vTimeZone.getComponents("STANDARD");
List<VComponent> summerTimeRules = vTimeZone.getComponents("DAYLIGHT");
String standardTimeOffset;
if (standardTimeRules.isEmpty()) {
if (summerTimeRules.isEmpty()) {
throw new Exception("Empty VTIMEZONE");
} else {
standardTimeOffset = summerTimeRules.get(0).getProperty("TZOFFSETFROM").getValue();
}
} else {
standardTimeOffset = standardTimeRules.get(0).getProperty("TZOFFSETTO").getValue();
}
basicOffset = parseOffset(standardTimeOffset);
for (VComponent standardTimeRule : standardTimeRules) {
addTransitions(standardTimeRule, from, to);
}
for (VComponent summerTimeRule : summerTimeRules) {
addTransitions(summerTimeRule, from, to);
}
Collections.sort(transitions);
} else {
this.name = ""; // This should not happen!
}
}
public void testTimeZoneHelperToXVCalendarCanberra() {
TimeZoneHelper vctz =
new TimeZoneHelper(
"Australia/Canberra",
1167609600000L, // 01 Jan 2007 @ 00:00:00 UTC
1349049600000L); // 01 Oct 2012 @ 00:00:00 UTC
Property tz = vctz.getTZ();
List<Property> dayLightList = vctz.getDaylightList();
assertEquals(6, dayLightList.size());
assertEquals("TZ", tz.getName());
assertEquals("+1000", tz.getValue());
assertEquals("DAYLIGHT", dayLightList.get(0).getName());
assertEquals(
"TRUE;+1100;20061029T020000;20070325T030000;Australia/Canberra;Australia/Canberra",
dayLightList.get(0).getValue());
assertEquals("DAYLIGHT", dayLightList.get(1).getName());
assertEquals(
"TRUE;+1100;20071028T020000;20080330T030000;Australia/Canberra;Australia/Canberra",
dayLightList.get(1).getValue());
assertEquals("DAYLIGHT", dayLightList.get(2).getName());
assertEquals(
"TRUE;+1100;20081026T020000;20090329T030000;Australia/Canberra;Australia/Canberra",
dayLightList.get(2).getValue());
assertEquals("DAYLIGHT", dayLightList.get(3).getName());
assertEquals(
"TRUE;+1100;20091025T020000;20100328T030000;Australia/Canberra;Australia/Canberra",
dayLightList.get(3).getValue());
assertEquals("DAYLIGHT", dayLightList.get(4).getName());
assertEquals(
"TRUE;+1100;20101031T020000;20110327T030000;Australia/Canberra;Australia/Canberra",
dayLightList.get(4).getValue());
assertEquals("DAYLIGHT", dayLightList.get(5).getName());
assertEquals(
"TRUE;+1100;20111030T020000;20120325T030000;Australia/Canberra;Australia/Canberra",
dayLightList.get(5).getValue());
}
private void addTransitions(VComponent timeRule, long from, long to) throws Exception {
int offset;
int previousOffset;
String start;
long startTime;
long time;
String transitionName;
Property tzName = timeRule.getProperty("TZNAME");
Property tzOffsetFrom = timeRule.getProperty("TZOFFSETFROM");
Property tzOffsetTo = timeRule.getProperty("TZOFFSETTO");
Property tzDtStart = timeRule.getProperty("DTSTART");
Property tzRRule = timeRule.getProperty("RRULE");
Property tzRDate = timeRule.getProperty("RDATE");
if (tzDtStart != null) {
start = tzDtStart.getValue();
startTime = parseDateTime(start);
} else {
throw new Exception("Required property DTSTART (of a time zone) is missing");
}
if (tzOffsetTo != null) {
offset = parseOffset(tzOffsetTo.getValue());
} else {
throw new Exception("Required property TZOFFSETTO is missing");
}
if (tzOffsetFrom != null) {
previousOffset = parseOffset(tzOffsetFrom.getValue());
} else {
throw new Exception("Required property TZOFFSETFROM is missing");
}
if (tzName != null) {
transitionName = tzName.getValue();
} else {
transitionName = "";
}
if (tzRDate != null) {
String[] rDates = tzRDate.getValue().split(",");
for (String rDate : rDates) {
time = parseDateTime(rDate);
transitions.add(new TimeZoneTransition(offset, time, transitionName));
}
}
if (tzRRule != null) {
RecurrencePattern rrule =
VCalendarContentConverter.getRecurrencePattern(
start,
null,
tzRRule.getValue(),
null, // as of specs
false); // iCalendar
if (((rrule.getTypeId() == RecurrencePattern.TYPE_MONTH_NTH) && (rrule.getInterval() == 12))
|| ((rrule.getTypeId() == RecurrencePattern.TYPE_YEAR_NTH)
&& (rrule.getInterval() == 1))) { // yearly
int dayOfWeek = getDayOfWeekFromMask(rrule.getDayOfWeekMask());
if (dayOfWeek > 0) { // one day
TimeZone fixed = TimeZone.getTimeZone("UTC");
fixed.setRawOffset(previousOffset);
Calendar finder = new GregorianCalendar(fixed);
finder.setTimeInMillis(startTime); // Sets hour and minutes
int hh = finder.get(Calendar.HOUR_OF_DAY);
int mm = finder.get(Calendar.MINUTE);
int m = rrule.getMonthOfYear() - 1; // Yes, it works
int yearStart = year(startTime);
int yearFrom = (startTime > from) ? yearStart : year(from);
int yearTo = year(to);
if (rrule.isNoEndDate()) {
int count = rrule.getOccurrences();
int yearRecurrenceEnd;
if (count != -1) {
yearRecurrenceEnd = yearStart + count - 1;
if (yearRecurrenceEnd < yearTo) {
yearTo = yearRecurrenceEnd;
}
}
} else {
try {
int yearRecurrenceEnd = year(rrule.getEndDatePattern());
if (yearRecurrenceEnd < yearTo) {
yearTo = yearRecurrenceEnd;
}
} catch (ParseException e) {
// Ignores the UNTIL part
}
}
for (int y = yearFrom; y <= yearTo; y++) {
finder.clear();
finder.set(Calendar.YEAR, y);
finder.set(Calendar.MONTH, m);
finder.set(Calendar.DAY_OF_WEEK, dayOfWeek);
finder.set(Calendar.DAY_OF_WEEK_IN_MONTH, rrule.getInstance());
finder.set(Calendar.HOUR_OF_DAY, hh);
finder.set(Calendar.MINUTE, mm);
long transitionTime = finder.getTimeInMillis() - (previousOffset - getBasicOffset());
transitions.add(new TimeZoneTransition(offset, transitionTime, transitionName));
}
}
}
}
}
protected static VTimezone toVTimezone(
List<ICalendarTimeZoneTransition> iCalendarTransitions, String id, int basicOffset) {
VTimezone vtz = new VTimezone();
vtz.addProperty("TZID", id);
TzDaylightComponent summerTimeRDates = null;
TzStandardComponent standardTimeRDates = null;
String standardTimeOffset = formatOffset(basicOffset);
// Visits all transitions in cronological order
for (int i = 0; i < iCalendarTransitions.size(); ) {
// If it's the last transition, or it's a transition that is not
// part of the standard/day-light time series, the special case must
// be separately treated
if ((i == iCalendarTransitions.size() - 1)
|| (!areHalfYearFar(
iCalendarTransitions.get(i).getTime(), iCalendarTransitions.get(i + 1).getTime()))) {
// "Burns" components that may be present in the buffer
if (summerTimeRDates != null) {
vtz.addComponent(summerTimeRDates);
vtz.addComponent(standardTimeRDates);
summerTimeRDates = null;
standardTimeRDates = null;
}
// Creates a new STANDARD component of the RDATE kind
TzStandardComponent specialRDate = new TzStandardComponent();
String specialCaseTime = iCalendarTransitions.get(i).getTimeISO1861();
specialRDate.addProperty("DTSTART", specialCaseTime);
specialRDate.addProperty("RDATE", specialCaseTime);
specialRDate.addProperty("TZOFFSETFROM", standardTimeOffset);
standardTimeOffset = // It needs be updated
formatOffset(iCalendarTransitions.get(i).getOffset());
specialRDate.addProperty("TZOFFSETTO", standardTimeOffset);
specialRDate.addProperty("TZNAME", iCalendarTransitions.get(i).getName());
vtz.addComponent(specialRDate); // Burns it
i++; // Moves on to the next transition
continue;
}
String lastOffset = standardTimeOffset;
String summerTimeOffset = formatOffset(iCalendarTransitions.get(i).getOffset());
standardTimeOffset = formatOffset(iCalendarTransitions.get(i + 1).getOffset());
String summerTimeStart = iCalendarTransitions.get(i).getTimeISO1861();
String standardTimeStart = iCalendarTransitions.get(i + 1).getTimeISO1861();
ICalendarTimeZoneTransition summerTimeClusterStart = iCalendarTransitions.get(i);
ICalendarTimeZoneTransition standardTimeClusterStart = iCalendarTransitions.get(i + 1);
int j; // Summer-time starts, backward instance count
int k; // Summer-time starts, forward instance count
int l; // Summer-time ends, backward instance count
int m; // Summer-time ends, forward instance count
for (j = i + 2; j < iCalendarTransitions.size(); j += 2) {
ICalendarTimeZoneTransition clusterMember = iCalendarTransitions.get(j);
if (!summerTimeClusterStart.matchesRecurrence(clusterMember, true)) {
break;
}
}
for (k = i + 2; k < iCalendarTransitions.size(); k += 2) {
ICalendarTimeZoneTransition clusterMember = iCalendarTransitions.get(k);
if (!summerTimeClusterStart.matchesRecurrence(clusterMember, false)) {
break;
}
}
for (l = i + 3; l < iCalendarTransitions.size(); l += 2) {
ICalendarTimeZoneTransition clusterMember = iCalendarTransitions.get(l);
if (!standardTimeClusterStart.matchesRecurrence(clusterMember, true)) {
break;
}
}
for (m = i + 3; m < iCalendarTransitions.size(); m += 2) {
ICalendarTimeZoneTransition clusterMember = iCalendarTransitions.get(m);
if (!standardTimeClusterStart.matchesRecurrence(clusterMember, false)) {
break;
}
}
boolean backwardInstanceCountForStarts = true;
boolean backwardInstanceCountForEnds = true;
if (k > j) { // counting istances in the forward direction makes a
// longer summer-time-start series
j = k; // j is now the longest series of summer-time starts
backwardInstanceCountForStarts = false;
}
if (m > l) { // counting istances in the forward direction makes a
// longer summer-time-end series
l = m; // l is now the longest series of summer-time ends
backwardInstanceCountForEnds = false;
}
j -= 2; // Compensates for the end condition of the for cycle above
l -= 2; // Compensates for the end condition of the for cycle above
if (l > j + 1) {
l = j + 1; // l is now the best acceptable end for a
// combined start-end series
} else {
j = l - 1;
}
// At this point, l + 1 = j
if (l > i + 1) { // more than one year: there's a recurrence
if (summerTimeRDates != null) {
vtz.addComponent(summerTimeRDates);
vtz.addComponent(standardTimeRDates);
}
// Create a new DAYLIGHT component
summerTimeRDates = new TzDaylightComponent();
summerTimeRDates.addProperty("DTSTART", summerTimeStart);
StringBuffer summerTimeRRule = new StringBuffer("FREQ=YEARLY;INTERVAL=1;BYDAY=");
if (backwardInstanceCountForStarts) {
summerTimeRRule.append("-1");
} else {
summerTimeRRule.append('+').append(summerTimeClusterStart.getInstance());
}
summerTimeRRule
.append(getDayOfWeekAbbreviation(summerTimeClusterStart.getDayOfWeek()))
.append(";BYMONTH=")
.append(summerTimeClusterStart.getMonth() + 1); // Jan must be 1
if (j < iCalendarTransitions.size() - 2) {
summerTimeRRule.append(";UNTIL=").append(iCalendarTransitions.get(j).getTimeISO1861());
}
summerTimeRDates.addProperty("RRULE", summerTimeRRule.toString());
summerTimeRDates.addProperty("TZOFFSETFROM", lastOffset);
summerTimeRDates.addProperty("TZOFFSETTO", summerTimeOffset);
summerTimeRDates.addProperty("TZNAME", iCalendarTransitions.get(i).getName());
// Create a new STANDARD component
standardTimeRDates = new TzStandardComponent();
standardTimeRDates.addProperty("DTSTART", standardTimeStart);
StringBuffer standardTimeRRule = new StringBuffer("FREQ=YEARLY;INTERVAL=1;BYDAY=");
if (backwardInstanceCountForEnds) {
standardTimeRRule.append("-1");
} else {
standardTimeRRule.append('+').append(standardTimeClusterStart.getInstance());
}
standardTimeRRule
.append(getDayOfWeekAbbreviation(standardTimeClusterStart.getDayOfWeek()))
.append(";BYMONTH=")
.append(standardTimeClusterStart.getMonth() + 1); // Jan must be 1
if (l < iCalendarTransitions.size() - 1) {
standardTimeRRule.append(";UNTIL=").append(iCalendarTransitions.get(l).getTimeISO1861());
}
standardTimeRDates.addProperty("RRULE", standardTimeRRule.toString());
standardTimeRDates.addProperty("TZOFFSETFROM", summerTimeOffset);
standardTimeRDates.addProperty("TZOFFSETTO", standardTimeOffset);
standardTimeRDates.addProperty("TZNAME", iCalendarTransitions.get(i + 1).getName());
vtz.addComponent(summerTimeRDates);
vtz.addComponent(standardTimeRDates);
summerTimeRDates = null;
standardTimeRDates = null;
i = j; // Increases the counter to jump beyond the recurrence
} else { // just one year: i, i+1 are transitions of the RDATE kind
if (summerTimeRDates == null) {
// Create a new DAYLIGHT component
summerTimeRDates = new TzDaylightComponent();
summerTimeRDates.addProperty("DTSTART", summerTimeStart);
summerTimeRDates.addProperty("RDATE", summerTimeStart);
summerTimeRDates.addProperty("TZOFFSETFROM", lastOffset);
summerTimeRDates.addProperty("TZOFFSETTO", summerTimeOffset);
summerTimeRDates.addProperty("TZNAME", iCalendarTransitions.get(i).getName());
// Create a new STANDARD component
standardTimeRDates = new TzStandardComponent();
standardTimeRDates.addProperty("DTSTART", standardTimeStart);
standardTimeRDates.addProperty("RDATE", standardTimeStart);
standardTimeRDates.addProperty("TZOFFSETFROM", summerTimeOffset);
standardTimeRDates.addProperty("TZOFFSETTO", standardTimeOffset);
standardTimeRDates.addProperty("TZNAME", iCalendarTransitions.get(i + 1).getName());
} else {
Property rdate = summerTimeRDates.getProperty("RDATE");
rdate.setValue(rdate.getValue() + ';' + summerTimeStart);
summerTimeRDates.setProperty(rdate);
rdate = standardTimeRDates.getProperty("RDATE");
rdate.setValue(rdate.getValue() + ';' + standardTimeStart);
standardTimeRDates.setProperty(rdate);
}
}
i += 2;
}
if (summerTimeRDates != null) {
vtz.addComponent(summerTimeRDates);
vtz.addComponent(standardTimeRDates);
summerTimeRDates = null;
standardTimeRDates = null;
}
return vtz;
}