Examples with TzOffsetFrom net.fortuna.ical4j.model.property.TzOffsetFrom used on opensource projects

Example 1 with TzOffsetFrom

use of net.fortuna.ical4j.model.property.TzOffsetFrom in project zm-mailbox by Zimbra.

the class ZoneInfo2iCalendar method toStandardComp.

private static Standard toStandardComp(Time gmtOffset, String tznameFormat) {
    PropertyList props = new PropertyList();
    if (tznameFormat != null && tznameFormat.length() > 0 && !tznameFormat.contains("%")) {
        props.add(new TzName(iCalEscape(tznameFormat)));
    }
    props.add(getMsOutlookStyleDtstart());
    String offset = getUtcOffset(gmtOffset);
    UtcOffset utcOffset = new UtcOffset(offset);
    props.add(new TzOffsetTo(utcOffset));
    props.add(new TzOffsetFrom(utcOffset));
    return new Standard(props);
}

Example 2 with TzOffsetFrom

use of net.fortuna.ical4j.model.property.TzOffsetFrom in project zm-mailbox by Zimbra.

the class ZoneInfo2iCalendar method toVTimeZoneComp.

/**
     * @param referenceDate
     * @param zline1 ZoneLine for 1st rule applicable after referenceDate
     * @param zline2 ZoneLine for 2nd rule applicable after referenceDate
     * @param obs1 Observances corresponding to zline1
     * @param vtzProps Properties to associate with the VTIMEZONE component
     * @param inDaylightTime  true if referenceDate falls within daylight time by the rules in zline1
     * @return best timezone or null if unable to determine one.
     */
private static VTimeZone toVTimeZoneComp(Calendar referenceDate, ZoneLine zline1, ZoneLine zline2, Observances obs1, PropertyList vtzProps, boolean inDaylightTime) {
    int hintYear = referenceDate.get(Calendar.YEAR);
    Observance obs4zl2;
    Time daylightOffset;
    Time standardOffset = zline2.getGmtOff();
    String tznameFormat = zline2.getAbbrevFormat();
    if (zline2.hasRule()) {
        RuleInfo rl2 = getRuleInfo(hintYear, zline2);
        daylightOffset = (null == rl2.daylight) ? standardOffset : addTimes(standardOffset, rl2.daylight.getSave());
        if (inDaylightTime) {
            obs4zl2 = toObservanceComp(hintYear, rl2.standard, true, /* isStandard */
            standardOffset, daylightOffset, tznameFormat);
            return toVTimeZoneComp(hintYear, new Observances(obs4zl2, obs1.daylight), vtzProps);
        } else {
            if (null == rl2.daylight) {
                return null;
            }
            obs4zl2 = toObservanceComp(hintYear, rl2.daylight, false, /* isStandard */
            standardOffset, daylightOffset, tznameFormat);
            return toVTimeZoneComp(hintYear, new Observances(obs1.std, obs4zl2), vtzProps);
        }
    } else if (zline2.hasSave()) {
        List<String> tokens = Lists.newArrayList();
        Until prevRuleEnd = zline1.getUntil();
        if (zline2.hasUntil()) {
            Until currRuleEnd = zline2.getUntil();
            if (null == currRuleEnd) {
                // Don't think this can happen
                return null;
            }
            String fromYear;
            if (prevRuleEnd != null) {
                fromYear = String.format("%d", prevRuleEnd.getYear());
            } else {
                fromYear = String.format("%d", hintYear);
            }
            String toYear = String.format("%d", currRuleEnd.getYear());
            // NAME
            tokens.add(getObservanceName(tznameFormat, null));
            // FROM
            tokens.add(fromYear);
            // TO
            tokens.add(toYear);
            // TYPE
            tokens.add("-");
            // IN
            tokens.add(ZoneInfoParser.Month.toString(currRuleEnd.getMonth()));
            // ON
            tokens.add(String.format("%s", currRuleEnd.getDay().toString()));
            // AT
            tokens.add(String.format("%s", currRuleEnd.getTime().toString()));
            // SAVE
            tokens.add(zline2.getSave().toString());
            // LETTER/S
            tokens.add("-");
            RuleLine newRule = pseudoZoneLineTokensToRuleLine(tokens, zline2);
            if (null == newRule) {
                return null;
            }
            daylightOffset = addTimes(standardOffset, zline2.getSave());
            obs4zl2 = toObservanceComp(hintYear, newRule, inDaylightTime, /* need the opposite */
            standardOffset, daylightOffset, tznameFormat);
            if (inDaylightTime) {
                return toVTimeZoneComp(hintYear, new Observances(obs4zl2, obs1.daylight), vtzProps);
            } else {
                return toVTimeZoneComp(hintYear, new Observances(obs1.std, obs4zl2), vtzProps);
            }
        } else {
            if (!inDaylightTime) {
                // Only reason for having a save but no until is if changing to standard time only?
                return null;
            }
            if (prevRuleEnd == null) {
                return null;
            }
            String fromYear = String.format("%d", prevRuleEnd.getYear());
            String toYear = "max";
            // NAME
            tokens.add(getObservanceName(tznameFormat, null));
            // FROM
            tokens.add(fromYear);
            // TO
            tokens.add(toYear);
            // TYPE
            tokens.add("-");
            // IN
            tokens.add(ZoneInfoParser.Month.toString(prevRuleEnd.getMonth()));
            // ON
            tokens.add(String.format("%s", prevRuleEnd.getDay().toString()));
            // AT
            tokens.add(String.format("%s", prevRuleEnd.getTime().toString()));
            // SAVE
            tokens.add(zline2.getSave().toString());
            // LETTER/S
            tokens.add("-");
            RuleLine newRule = pseudoZoneLineTokensToRuleLine(tokens, zline2);
            if (null == newRule) {
                return null;
            }
            daylightOffset = standardOffset;
            /* random value - fix later */
            ;
            obs4zl2 = toObservanceComp(hintYear, newRule, true, standardOffset, daylightOffset, tznameFormat);
            TzOffsetFrom stdOffsetFrom = (TzOffsetFrom) obs4zl2.getProperties().getProperty(Property.TZOFFSETFROM);
            TzOffsetTo stdOffsetTo = (TzOffsetTo) obs4zl2.getProperties().getProperty(Property.TZOFFSETTO);
            TzOffsetTo dlOffsetTo = (TzOffsetTo) obs1.daylight.getProperties().getProperty(Property.TZOFFSETTO);
            if (stdOffsetTo.equals(dlOffsetTo)) {
                // New standard time is same as current daylight time - just use observance.
                obs4zl2 = toStandardComp(zline2.getGmtOff(), tznameFormat);
                return toVTimeZoneComp(hintYear, new Observances(obs4zl2, null), vtzProps);
            }
            // Make sure that the zones are consistent with each other
            stdOffsetFrom.setOffset(dlOffsetTo.getOffset());
            TzOffsetFrom dlOffsetFrom = (TzOffsetFrom) obs1.daylight.getProperties().getProperty(Property.TZOFFSETFROM);
            dlOffsetFrom.setOffset(stdOffsetTo.getOffset());
            return toVTimeZoneComp(hintYear, new Observances(obs4zl2, obs1.daylight), vtzProps);
        }
    }
    return null;
}

Example 3 with TzOffsetFrom

use of net.fortuna.ical4j.model.property.TzOffsetFrom in project zm-mailbox by Zimbra.

the class TimeZoneDefinition method getTimeZone.

/**
     *
     * @return the appropriate iCal4j TimeZone for this TimeZoneDefinition
     */
public TimeZone getTimeZone() {
    if (theZone != null) {
        return theZone;
    }
    if (effectiveRule == null) {
        theZone = new TimeZone(0, TimeZones.UTC_ID);
        return theZone;
    }
    if (!effectiveRule.hasDaylightSaving()) {
        theZone = new TimeZone(effectiveRule.getStandardUtcOffsetMillis(), getTimezoneName());
        return theZone;
    }
    UtcOffset stdOffset = effectiveRule.getStandardUtcOffset();
    UtcOffset dlOffset = effectiveRule.getDaylightUtcOffset();
    PropertyList vtzProps = new PropertyList();
    TzId myTzid = new TzId(getTimezoneName());
    vtzProps.add(myTzid);
    VTimeZone vtz = new VTimeZone(vtzProps);
    Standard stdComp = new Standard();
    stdComp.getProperties().add(effectiveRule.getStandardDtStart());
    stdComp.getProperties().add(effectiveRule.icalStandardRRule());
    TzOffsetFrom offsetFrom = new TzOffsetFrom(dlOffset);
    TzOffsetTo offsetTo = new TzOffsetTo(stdOffset);
    stdComp.getProperties().add(offsetFrom);
    stdComp.getProperties().add(offsetTo);
    Daylight dayComp = new Daylight();
    dayComp.getProperties().add(effectiveRule.getDaylightDtStart());
    dayComp.getProperties().add(effectiveRule.icalDaylightRRule());
    offsetFrom = new TzOffsetFrom(stdOffset);
    offsetTo = new TzOffsetTo(dlOffset);
    dayComp.getProperties().add(offsetFrom);
    dayComp.getProperties().add(offsetTo);
    vtz.getObservances().add(stdComp);
    vtz.getObservances().add(dayComp);
    try {
        vtz.validate(true);
        theZone = new TimeZone(vtz);
    } catch (ValidationException e) {
        if (sLog.isDebugEnabled()) {
            sLog.debug("Problem with property %s - will default to UTC" + this.mpi.toString(), e);
        }
        theZone = new TimeZone(0, TimeZones.UTC_ID);
    }
    theZone = new TimeZone(vtz);
    return theZone;
}

Example 4 with TzOffsetFrom

use of net.fortuna.ical4j.model.property.TzOffsetFrom in project zm-mailbox by Zimbra.

the class ZoneInfo2iCalendar method toObservanceComp.

private static Observance toObservanceComp(int hintYear, RuleLine rline, boolean isStandard, Time standardOffset, Time daylightOffset, String tznameFormat) {
    PropertyList props = new PropertyList();
    String tzname = getObservanceName(tznameFormat, rline);
    if (tzname != null) {
        props.add(new TzName(tzname));
    }
    Time at = rline.getAt();
    Time onset;
    switch(at.getType()) {
        case STANDARD_TIME:
            if (isStandard) {
                // We're moving from daylight time to standard time.  In iCalendar we want hh:mm:ss in
                // wall clock in the pre-transition time, so it's daylight time.
                // daylight = utc + daylight offset = (standard - standard offset) + daylight offset
                onset = addTimes(subtractTimes(at, standardOffset), daylightOffset);
            } else {
                // We're moving from standard time to daylight time.  In iCalendar we want hh:mm:ss in
                // wall clock in the pre-transition time, so it's standard time.  at is already in
                // standard time.
                onset = at;
            }
            break;
        case UTC_TIME:
            if (isStandard) {
                // We're moving from daylight time to standard time.  In iCalendar we want hh:mm:ss in
                // wall clock in the pre-transition time, so it's daylight time.
                // daylight = utc + daylightOffset.
                onset = addTimes(at, daylightOffset);
            } else {
                // We're moving from standard time to daylight time.  In iCalendar we want hh:mm:ss in
                // wall clock in the pre-transition time, so it's standard time.
                // standard = utc + standard offset.
                onset = addTimes(at, standardOffset);
            }
            break;
        default:
            // WALL_TIME
            // at is already in the iCalendar style.
            onset = at;
            break;
    }
    int hh = onset.getHour();
    int mm = onset.getMinute();
    int ss = onset.getSecond();
    if (hh >= 24) {
        // Hour should be between 0 and 23, but sometimes we can get 24:00:00 from the zoneinfo source.
        // Since hour part in iCalendar only allows 0-23, let's approximate any time with hour >= 24 to
        // 23:59:59.
        hh = 23;
        mm = 59;
        ss = 59;
    }
    // YYYYMMDD fixed to 16010101 (MS Outlook style)
    props.add(getDtStart(String.format("16010101T%02d%02d%02d", hh, mm, ss)));
    Time toOffset, fromOffset;
    if (isStandard) {
        toOffset = standardOffset;
        fromOffset = daylightOffset;
    } else {
        toOffset = daylightOffset;
        fromOffset = standardOffset;
    }
    props.add(new TzOffsetTo(new UtcOffset(getUtcOffset(toOffset))));
    props.add(new TzOffsetFrom(new UtcOffset(getUtcOffset(fromOffset))));
    int month = rline.getIn();
    StringBuilder rruleVal = new StringBuilder();
    rruleVal.append("FREQ=YEARLY;WKST=MO;INTERVAL=1;BYMONTH=").append(month).append(";");
    rruleVal.append(dayToICalRRulePart(hintYear, month, rline.getOn()));
    try {
        RRule rrule = new RRule(new ParameterList(), rruleVal.toString());
        props.add(rrule);
    } catch (ParseException e) {
    }
    if (isStandard) {
        return new Standard(props);
    } else {
        return new Daylight(props);
    }
}