/src/icu/source/i18n/basictz.cpp

Source (jump to first uncovered line)
// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
* Copyright (C) 2007-2013, International Business Machines Corporation and
* others. All Rights Reserved.
*******************************************************************************
*/

#include "unicode/utypes.h"

#if !UCONFIG_NO_FORMATTING

#include "unicode/basictz.h"
#include "gregoimp.h"
#include "uvector.h"
#include "cmemory.h"

U_NAMESPACE_BEGIN

#define MILLIS_PER_YEAR (365*24*60*60*1000.0)

BasicTimeZone::BasicTimeZone()
: TimeZone() {
}

BasicTimeZone::BasicTimeZone(const UnicodeString &id)
: TimeZone(id) {
}

BasicTimeZone::BasicTimeZone(const BasicTimeZone& source)
: TimeZone(source) {
}

BasicTimeZone::~BasicTimeZone() {
}

UBool
BasicTimeZone::hasEquivalentTransitions(const BasicTimeZone& tz, UDate start, UDate end,
                                        UBool ignoreDstAmount, UErrorCode& status) const {
    if (U_FAILURE(status)) {
        return FALSE;
    }
    if (hasSameRules(tz)) {
        return TRUE;
    }
    // Check the offsets at the start time
    int32_t raw1, raw2, dst1, dst2;
    getOffset(start, FALSE, raw1, dst1, status);
    if (U_FAILURE(status)) {
        return FALSE;
    }
    tz.getOffset(start, FALSE, raw2, dst2, status);
    if (U_FAILURE(status)) {
        return FALSE;
    }
    if (ignoreDstAmount) {
        if ((raw1 + dst1 != raw2 + dst2)
            || (dst1 != 0 && dst2 == 0)
            || (dst1 == 0 && dst2 != 0)) {
            return FALSE;
        }
    } else {
        if (raw1 != raw2 || dst1 != dst2) {
            return FALSE;
        }            
    }
    // Check transitions in the range
    UDate time = start;
    TimeZoneTransition tr1, tr2;
    while (TRUE) {
        UBool avail1 = getNextTransition(time, FALSE, tr1);
        UBool avail2 = tz.getNextTransition(time, FALSE, tr2);

        if (ignoreDstAmount) {
            // Skip a transition which only differ the amount of DST savings
            while (TRUE) {
                if (avail1
                        && tr1.getTime() <= end
                        && (tr1.getFrom()->getRawOffset() + tr1.getFrom()->getDSTSavings()
                                == tr1.getTo()->getRawOffset() + tr1.getTo()->getDSTSavings())
                        && (tr1.getFrom()->getDSTSavings() != 0 && tr1.getTo()->getDSTSavings() != 0)) {
                    getNextTransition(tr1.getTime(), FALSE, tr1);
                } else {
                    break;
                }
            }
            while (TRUE) {
                if (avail2
                        && tr2.getTime() <= end
                        && (tr2.getFrom()->getRawOffset() + tr2.getFrom()->getDSTSavings()
                                == tr2.getTo()->getRawOffset() + tr2.getTo()->getDSTSavings())
                        && (tr2.getFrom()->getDSTSavings() != 0 && tr2.getTo()->getDSTSavings() != 0)) {
                    tz.getNextTransition(tr2.getTime(), FALSE, tr2);
                } else {
                    break;
                }
            }
        }

        UBool inRange1 = (avail1 && tr1.getTime() <= end);
        UBool inRange2 = (avail2 && tr2.getTime() <= end);
        if (!inRange1 && !inRange2) {
            // No more transition in the range
            break;
        }
        if (!inRange1 || !inRange2) {
            return FALSE;
        }
        if (tr1.getTime() != tr2.getTime()) {
            return FALSE;
        }
        if (ignoreDstAmount) {
            if (tr1.getTo()->getRawOffset() + tr1.getTo()->getDSTSavings()
                        != tr2.getTo()->getRawOffset() + tr2.getTo()->getDSTSavings()
                    || (tr1.getTo()->getDSTSavings() != 0 &&  tr2.getTo()->getDSTSavings() == 0)
                    || (tr1.getTo()->getDSTSavings() == 0 &&  tr2.getTo()->getDSTSavings() != 0)) {
                return FALSE;
            }
        } else {
            if (tr1.getTo()->getRawOffset() != tr2.getTo()->getRawOffset() ||
                tr1.getTo()->getDSTSavings() != tr2.getTo()->getDSTSavings()) {
                return FALSE;
            }
        }
        time = tr1.getTime();
    }
    return TRUE;
}

void
BasicTimeZone::getSimpleRulesNear(UDate date, InitialTimeZoneRule*& initial,
        AnnualTimeZoneRule*& std, AnnualTimeZoneRule*& dst, UErrorCode& status) const {
    initial = NULL;
    std = NULL;
    dst = NULL;
    if (U_FAILURE(status)) {
        return;
    }
    int32_t initialRaw, initialDst;
    UnicodeString initialName;

    AnnualTimeZoneRule *ar1 = NULL;
    AnnualTimeZoneRule *ar2 = NULL;
    UnicodeString name;

    UBool avail;
    TimeZoneTransition tr;
    // Get the next transition
    avail = getNextTransition(date, FALSE, tr);
    if (avail) {
        tr.getFrom()->getName(initialName);
        initialRaw = tr.getFrom()->getRawOffset();
        initialDst = tr.getFrom()->getDSTSavings();

        // Check if the next transition is either DST->STD or STD->DST and
        // within roughly 1 year from the specified date
        UDate nextTransitionTime = tr.getTime();
        if (((tr.getFrom()->getDSTSavings() == 0 && tr.getTo()->getDSTSavings() != 0)
              || (tr.getFrom()->getDSTSavings() != 0 && tr.getTo()->getDSTSavings() == 0))
            && (date + MILLIS_PER_YEAR > nextTransitionTime)) {
 
            int32_t year, month, dom, dow, doy, mid;
            UDate d;

            // Get local wall time for the next transition time
            Grego::timeToFields(nextTransitionTime + initialRaw + initialDst,
                year, month, dom, dow, doy, mid);
            int32_t weekInMonth = Grego::dayOfWeekInMonth(year, month, dom);
            // Create DOW rule
            DateTimeRule *dtr = new DateTimeRule(month, weekInMonth, dow, mid, DateTimeRule::WALL_TIME);
            tr.getTo()->getName(name);

            // Note:  SimpleTimeZone does not support raw offset change.
            // So we always use raw offset of the given time for the rule,
            // even raw offset is changed.  This will result that the result
            // zone to return wrong offset after the transition.
            // When we encounter such case, we do not inspect next next
            // transition for another rule.
            ar1 = new AnnualTimeZoneRule(name, initialRaw, tr.getTo()->getDSTSavings(),
                dtr, year, AnnualTimeZoneRule::MAX_YEAR);

            if (tr.getTo()->getRawOffset() == initialRaw) {
                // Get the next next transition
                avail = getNextTransition(nextTransitionTime, FALSE, tr);
                if (avail) {
                    // Check if the next next transition is either DST->STD or STD->DST
                    // and within roughly 1 year from the next transition
                    if (((tr.getFrom()->getDSTSavings() == 0 && tr.getTo()->getDSTSavings() != 0)
                          || (tr.getFrom()->getDSTSavings() != 0 && tr.getTo()->getDSTSavings() == 0))
                         && nextTransitionTime + MILLIS_PER_YEAR > tr.getTime()) {

                        // Get local wall time for the next transition time
                        Grego::timeToFields(tr.getTime() + tr.getFrom()->getRawOffset() + tr.getFrom()->getDSTSavings(),
                            year, month, dom, dow, doy, mid);
                        weekInMonth = Grego::dayOfWeekInMonth(year, month, dom);
                        // Generate another DOW rule
                        dtr = new DateTimeRule(month, weekInMonth, dow, mid, DateTimeRule::WALL_TIME);
                        tr.getTo()->getName(name);
                        ar2 = new AnnualTimeZoneRule(name, tr.getTo()->getRawOffset(), tr.getTo()->getDSTSavings(),
                            dtr, year - 1, AnnualTimeZoneRule::MAX_YEAR);

                        // Make sure this rule can be applied to the specified date
                        avail = ar2->getPreviousStart(date, tr.getFrom()->getRawOffset(), tr.getFrom()->getDSTSavings(), TRUE, d);
                        if (!avail || d > date
                                || initialRaw != tr.getTo()->getRawOffset()
                                || initialDst != tr.getTo()->getDSTSavings()) {
                            // We cannot use this rule as the second transition rule
                            delete ar2;
                            ar2 = NULL;
                        }
                    }
                }
            }
            if (ar2 == NULL) {
                // Try previous transition
                avail = getPreviousTransition(date, TRUE, tr);
                if (avail) {
                    // Check if the previous transition is either DST->STD or STD->DST.
                    // The actual transition time does not matter here.
                    if ((tr.getFrom()->getDSTSavings() == 0 && tr.getTo()->getDSTSavings() != 0)
                        || (tr.getFrom()->getDSTSavings() != 0 && tr.getTo()->getDSTSavings() == 0)) {

                        // Generate another DOW rule
                        Grego::timeToFields(tr.getTime() + tr.getFrom()->getRawOffset() + tr.getFrom()->getDSTSavings(),
                            year, month, dom, dow, doy, mid);
                        weekInMonth = Grego::dayOfWeekInMonth(year, month, dom);
                        dtr = new DateTimeRule(month, weekInMonth, dow, mid, DateTimeRule::WALL_TIME);
                        tr.getTo()->getName(name);

                        // second rule raw/dst offsets should match raw/dst offsets
                        // at the given time
                        ar2 = new AnnualTimeZoneRule(name, initialRaw, initialDst,
                            dtr, ar1->getStartYear() - 1, AnnualTimeZoneRule::MAX_YEAR);

                        // Check if this rule start after the first rule after the specified date
                        avail = ar2->getNextStart(date, tr.getFrom()->getRawOffset(), tr.getFrom()->getDSTSavings(), FALSE, d);
                        if (!avail || d <= nextTransitionTime) {
                            // We cannot use this rule as the second transition rule
                            delete ar2;
                            ar2 = NULL;
                        }
                    }
                }
            }
            if (ar2 == NULL) {
                // Cannot find a good pair of AnnualTimeZoneRule
                delete ar1;
                ar1 = NULL;
            } else {
                // The initial rule should represent the rule before the previous transition
                ar1->getName(initialName);
                initialRaw = ar1->getRawOffset();
                initialDst = ar1->getDSTSavings();
            }
        }
    }
    else {
        // Try the previous one
        avail = getPreviousTransition(date, TRUE, tr);
        if (avail) {
            tr.getTo()->getName(initialName);
            initialRaw = tr.getTo()->getRawOffset();
            initialDst = tr.getTo()->getDSTSavings();
        } else {
            // No transitions in the past.  Just use the current offsets
            getOffset(date, FALSE, initialRaw, initialDst, status);
            if (U_FAILURE(status)) {
                return;
            }
        }
    }
    // Set the initial rule
    initial = new InitialTimeZoneRule(initialName, initialRaw, initialDst);

    // Set the standard and daylight saving rules
    if (ar1 != NULL && ar2 != NULL) {
        if (ar1->getDSTSavings() != 0) {
            dst = ar1;
            std = ar2;
        } else {
            std = ar1;
            dst = ar2;
        }
    }
}

void
BasicTimeZone::getTimeZoneRulesAfter(UDate start, InitialTimeZoneRule*& initial,
                                     UVector*& transitionRules, UErrorCode& status) const {
    if (U_FAILURE(status)) {
        return;
    }

    const InitialTimeZoneRule *orgini;
    const TimeZoneRule **orgtrs = NULL;
    TimeZoneTransition tzt;
    UBool avail;
    UVector *orgRules = NULL;
    int32_t ruleCount;
    TimeZoneRule *r = NULL;
    UBool *done = NULL;
    InitialTimeZoneRule *res_initial = NULL;
    UVector *filteredRules = NULL;
    UnicodeString name;
    int32_t i;
    UDate time, t;
    UDate *newTimes = NULL;
    UDate firstStart;
    UBool bFinalStd = FALSE, bFinalDst = FALSE;

    // Original transition rules
    ruleCount = countTransitionRules(status);
    if (U_FAILURE(status)) {
        return;
    }
    orgRules = new UVector(ruleCount, status);
    if (U_FAILURE(status)) {
        return;
    }
    orgtrs = (const TimeZoneRule**)uprv_malloc(sizeof(TimeZoneRule*)*ruleCount);
    if (orgtrs == NULL) {
        status = U_MEMORY_ALLOCATION_ERROR;
        goto error;
    }
    getTimeZoneRules(orgini, orgtrs, ruleCount, status);
    if (U_FAILURE(status)) {
        goto error;
    }
    for (i = 0; i < ruleCount; i++) {
        orgRules->addElementX(orgtrs[i]->clone(), status);
        if (U_FAILURE(status)) {
            goto error;
        }
    }
    uprv_free(orgtrs);
    orgtrs = NULL;

    avail = getPreviousTransition(start, TRUE, tzt);
    if (!avail) {
        // No need to filter out rules only applicable to time before the start
        initial = orgini->clone();
        transitionRules = orgRules;
        return;
    }

    done = (UBool*)uprv_malloc(sizeof(UBool)*ruleCount);
    if (done == NULL) {
        status = U_MEMORY_ALLOCATION_ERROR;
        goto error;
    }
    filteredRules = new UVector(status);
    if (U_FAILURE(status)) {
        goto error;
    }

    // Create initial rule
    tzt.getTo()->getName(name);
    res_initial = new InitialTimeZoneRule(name, tzt.getTo()->getRawOffset(),
        tzt.getTo()->getDSTSavings());

    // Mark rules which does not need to be processed
    for (i = 0; i < ruleCount; i++) {
        r = (TimeZoneRule*)orgRules->elementAt(i);
        avail = r->getNextStart(start, res_initial->getRawOffset(), res_initial->getDSTSavings(), FALSE, time);
        done[i] = !avail;
    }

    time = start;
    while (!bFinalStd || !bFinalDst) {
        avail = getNextTransition(time, FALSE, tzt);
        if (!avail) {
            break;
        }
        UDate updatedTime = tzt.getTime();
        if (updatedTime == time) {
            // Can get here if rules for start & end of daylight time have exactly
            // the same time.  
            // TODO:  fix getNextTransition() to prevent it?
            status = U_INVALID_STATE_ERROR;
            goto error;
        }
        time = updatedTime;
 
        const TimeZoneRule *toRule = tzt.getTo();
        for (i = 0; i < ruleCount; i++) {
            r = (TimeZoneRule*)orgRules->elementAt(i);
            if (*r == *toRule) {
                break;
            }
        }
        if (i >= ruleCount) {
            // This case should never happen
            status = U_INVALID_STATE_ERROR;
            goto error;
        }
        if (done[i]) {
            continue;
        }
        const TimeArrayTimeZoneRule *tar = dynamic_cast<const TimeArrayTimeZoneRule *>(toRule);
        const AnnualTimeZoneRule *ar;
        if (tar != NULL) {
            // Get the previous raw offset and DST savings before the very first start time
            TimeZoneTransition tzt0;
            t = start;
            while (TRUE) {
                avail = getNextTransition(t, FALSE, tzt0);
                if (!avail) {
                    break;
                }
                if (*(tzt0.getTo()) == *tar) {
                    break;
                }
                t = tzt0.getTime();
            }
            if (avail) {
                // Check if the entire start times to be added
                tar->getFirstStart(tzt.getFrom()->getRawOffset(), tzt.getFrom()->getDSTSavings(), firstStart);
                if (firstStart > start) {
                    // Just add the rule as is
                    filteredRules->addElementX(tar->clone(), status);
                    if (U_FAILURE(status)) {
                        goto error;
                    }
                } else {
                    // Collect transitions after the start time
                    int32_t startTimes;
                    DateTimeRule::TimeRuleType timeType;
                    int32_t idx;

                    startTimes = tar->countStartTimes();
                    timeType = tar->getTimeType();
                    for (idx = 0; idx < startTimes; idx++) {
                        tar->getStartTimeAt(idx, t);
                        if (timeType == DateTimeRule::STANDARD_TIME) {
                            t -= tzt.getFrom()->getRawOffset();
                        }
                        if (timeType == DateTimeRule::WALL_TIME) {
                            t -= tzt.getFrom()->getDSTSavings();
                        }
                        if (t > start) {
                            break;
                        }
                    }
                    int32_t asize = startTimes - idx;
                    if (asize > 0) {
                        newTimes = (UDate*)uprv_malloc(sizeof(UDate) * asize);
                        if (newTimes == NULL) {
                            status = U_MEMORY_ALLOCATION_ERROR;
                            goto error;
                        }
                        for (int32_t newidx = 0; newidx < asize; newidx++) {
                            tar->getStartTimeAt(idx + newidx, newTimes[newidx]);
                            if (U_FAILURE(status)) {
                                uprv_free(newTimes);
                                newTimes = NULL;
                                goto error;
                            }
                        }
                        tar->getName(name);
                        TimeArrayTimeZoneRule *newTar = new TimeArrayTimeZoneRule(name,
                            tar->getRawOffset(), tar->getDSTSavings(), newTimes, asize, timeType);
                        uprv_free(newTimes);
                        filteredRules->addElementX(newTar, status);
                        if (U_FAILURE(status)) {
                            goto error;
                        }
                    }
                }
            }
        } else if ((ar = dynamic_cast<const AnnualTimeZoneRule *>(toRule)) != NULL) {
            ar->getFirstStart(tzt.getFrom()->getRawOffset(), tzt.getFrom()->getDSTSavings(), firstStart);
            if (firstStart == tzt.getTime()) {
                // Just add the rule as is
                filteredRules->addElementX(ar->clone(), status);
                if (U_FAILURE(status)) {
                    goto error;
                }
            } else {
                // Calculate the transition year
                int32_t year, month, dom, dow, doy, mid;
                Grego::timeToFields(tzt.getTime(), year, month, dom, dow, doy, mid);
                // Re-create the rule
                ar->getName(name);
                AnnualTimeZoneRule *newAr = new AnnualTimeZoneRule(name, ar->getRawOffset(), ar->getDSTSavings(),
                    *(ar->getRule()), year, ar->getEndYear());
                filteredRules->addElementX(newAr, status);
                if (U_FAILURE(status)) {
                    goto error;
                }
            }
            // check if this is a final rule
            if (ar->getEndYear() == AnnualTimeZoneRule::MAX_YEAR) {
                // After bot final standard and dst rules are processed,
                // exit this while loop.
                if (ar->getDSTSavings() == 0) {
                    bFinalStd = TRUE;
                } else {
                    bFinalDst = TRUE;
                }
            }
        }
        done[i] = TRUE;
    }

    // Set the results
    if (orgRules != NULL) {
        while (!orgRules->isEmpty()) {
            r = (TimeZoneRule*)orgRules->orphanElementAt(0);
            delete r;
        }
        delete orgRules;
    }
    if (done != NULL) {
        uprv_free(done);
    }

    initial = res_initial;
    transitionRules = filteredRules;
    return;

error:
    if (orgtrs != NULL) {
        uprv_free(orgtrs);
    }
    if (orgRules != NULL) {
        while (!orgRules->isEmpty()) {
            r = (TimeZoneRule*)orgRules->orphanElementAt(0);
            delete r;
        }
        delete orgRules;
    }
    if (done != NULL) {
        if (filteredRules != NULL) {
            while (!filteredRules->isEmpty()) {
                r = (TimeZoneRule*)filteredRules->orphanElementAt(0);
                delete r;
            }
            delete filteredRules;
        }
        delete res_initial;
        uprv_free(done);
    }

    initial = NULL;
    transitionRules = NULL;
}

void
BasicTimeZone::getOffsetFromLocal(UDate /*date*/, UTimeZoneLocalOption /*nonExistingTimeOpt*/,
                                  UTimeZoneLocalOption /*duplicatedTimeOpt*/,
                                  int32_t& /*rawOffset*/, int32_t& /*dstOffset*/,
                                  UErrorCode& status) const {
    if (U_FAILURE(status)) {
        return;
    }
    status = U_UNSUPPORTED_ERROR;
}

void BasicTimeZone::getOffsetFromLocal(UDate date, int32_t nonExistingTimeOpt, int32_t duplicatedTimeOpt,
                                       int32_t& rawOffset, int32_t& dstOffset,
                                       UErrorCode& status) const {
    getOffsetFromLocal(date, (UTimeZoneLocalOption)nonExistingTimeOpt,
                       (UTimeZoneLocalOption)duplicatedTimeOpt, rawOffset, dstOffset, status);
}

U_NAMESPACE_END

#endif /* #if !UCONFIG_NO_FORMATTING */

//eof

Coverage Report

Created: 2025-01-28 06:38

Line	Count	Source (jump to first uncovered line)
1		// © 2016 and later: Unicode, Inc. and others.
2		// License & terms of use: http://www.unicode.org/copyright.html
3		/*
4		*******************************************************************************
5		* Copyright (C) 2007-2013, International Business Machines Corporation and
6		* others. All Rights Reserved.
7		*******************************************************************************
8		*/
9
10		#include "unicode/utypes.h"
11
12		#if !UCONFIG_NO_FORMATTING
13
14		#include "unicode/basictz.h"
15		#include "gregoimp.h"
16		#include "uvector.h"
17		#include "cmemory.h"
18
19		U_NAMESPACE_BEGIN
20
21	0	#define MILLIS_PER_YEAR (3652460601000.0)
22
23		BasicTimeZone::BasicTimeZone()
24	0	: TimeZone() {
25	0	}
26
27		BasicTimeZone::BasicTimeZone(const UnicodeString &id)
28	0	: TimeZone(id) {
29	0	}
30
31		BasicTimeZone::BasicTimeZone(const BasicTimeZone& source)
32	0	: TimeZone(source) {
33	0	}
34
35	0	BasicTimeZone::~BasicTimeZone() {
36	0	}
37
38		UBool
39		BasicTimeZone::hasEquivalentTransitions(const BasicTimeZone& tz, UDate start, UDate end,
40	0	UBool ignoreDstAmount, UErrorCode& status) const {
41	0	if (U_FAILURE(status)) {
42	0	return FALSE;
43	0	}
44	0	if (hasSameRules(tz)) {
45	0	return TRUE;
46	0	}
47		// Check the offsets at the start time
48	0	int32_t raw1, raw2, dst1, dst2;
49	0	getOffset(start, FALSE, raw1, dst1, status);
50	0	if (U_FAILURE(status)) {
51	0	return FALSE;
52	0	}
53	0	tz.getOffset(start, FALSE, raw2, dst2, status);
54	0	if (U_FAILURE(status)) {
55	0	return FALSE;
56	0	}
57	0	if (ignoreDstAmount) {
58	0	if ((raw1 + dst1 != raw2 + dst2)
59	0	\|\| (dst1 != 0 && dst2 == 0)
60	0	\|\| (dst1 == 0 && dst2 != 0)) {
61	0	return FALSE;
62	0	}
63	0	} else {
64	0	if (raw1 != raw2 \|\| dst1 != dst2) {
65	0	return FALSE;
66	0	}
67	0	}
68		// Check transitions in the range
69	0	UDate time = start;
70	0	TimeZoneTransition tr1, tr2;
71	0	while (TRUE) {
72	0	UBool avail1 = getNextTransition(time, FALSE, tr1);
73	0	UBool avail2 = tz.getNextTransition(time, FALSE, tr2);
74
75	0	if (ignoreDstAmount) {
76		// Skip a transition which only differ the amount of DST savings
77	0	while (TRUE) {
78	0	if (avail1
79	0	&& tr1.getTime() <= end
80	0	&& (tr1.getFrom()->getRawOffset() + tr1.getFrom()->getDSTSavings()
81	0	== tr1.getTo()->getRawOffset() + tr1.getTo()->getDSTSavings())
82	0	&& (tr1.getFrom()->getDSTSavings() != 0 && tr1.getTo()->getDSTSavings() != 0)) {
83	0	getNextTransition(tr1.getTime(), FALSE, tr1);
84	0	} else {
85	0	break;
86	0	}
87	0	}
88	0	while (TRUE) {
89	0	if (avail2
90	0	&& tr2.getTime() <= end
91	0	&& (tr2.getFrom()->getRawOffset() + tr2.getFrom()->getDSTSavings()
92	0	== tr2.getTo()->getRawOffset() + tr2.getTo()->getDSTSavings())
93	0	&& (tr2.getFrom()->getDSTSavings() != 0 && tr2.getTo()->getDSTSavings() != 0)) {
94	0	tz.getNextTransition(tr2.getTime(), FALSE, tr2);
95	0	} else {
96	0	break;
97	0	}
98	0	}
99	0	}
100
101	0	UBool inRange1 = (avail1 && tr1.getTime() <= end);
102	0	UBool inRange2 = (avail2 && tr2.getTime() <= end);
103	0	if (!inRange1 && !inRange2) {
104		// No more transition in the range
105	0	break;
106	0	}
107	0	if (!inRange1 \|\| !inRange2) {
108	0	return FALSE;
109	0	}
110	0	if (tr1.getTime() != tr2.getTime()) {
111	0	return FALSE;
112	0	}
113	0	if (ignoreDstAmount) {
114	0	if (tr1.getTo()->getRawOffset() + tr1.getTo()->getDSTSavings()
115	0	!= tr2.getTo()->getRawOffset() + tr2.getTo()->getDSTSavings()
116	0	\|\| (tr1.getTo()->getDSTSavings() != 0 && tr2.getTo()->getDSTSavings() == 0)
117	0	\|\| (tr1.getTo()->getDSTSavings() == 0 && tr2.getTo()->getDSTSavings() != 0)) {
118	0	return FALSE;
119	0	}
120	0	} else {
121	0	if (tr1.getTo()->getRawOffset() != tr2.getTo()->getRawOffset() \|\|
122	0	tr1.getTo()->getDSTSavings() != tr2.getTo()->getDSTSavings()) {
123	0	return FALSE;
124	0	}
125	0	}
126	0	time = tr1.getTime();
127	0	}
128	0	return TRUE;
129	0	}
130
131		void
132		BasicTimeZone::getSimpleRulesNear(UDate date, InitialTimeZoneRule*& initial,
133	0	AnnualTimeZoneRule& std, AnnualTimeZoneRule& dst, UErrorCode& status) const {
134	0	initial = NULL;
135	0	std = NULL;
136	0	dst = NULL;
137	0	if (U_FAILURE(status)) {
138	0	return;
139	0	}
140	0	int32_t initialRaw, initialDst;
141	0	UnicodeString initialName;
142
143	0	AnnualTimeZoneRule *ar1 = NULL;
144	0	AnnualTimeZoneRule *ar2 = NULL;
145	0	UnicodeString name;
146
147	0	UBool avail;
148	0	TimeZoneTransition tr;
149		// Get the next transition
150	0	avail = getNextTransition(date, FALSE, tr);
151	0	if (avail) {
152	0	tr.getFrom()->getName(initialName);
153	0	initialRaw = tr.getFrom()->getRawOffset();
154	0	initialDst = tr.getFrom()->getDSTSavings();
155
156		// Check if the next transition is either DST->STD or STD->DST and
157		// within roughly 1 year from the specified date
158	0	UDate nextTransitionTime = tr.getTime();
159	0	if (((tr.getFrom()->getDSTSavings() == 0 && tr.getTo()->getDSTSavings() != 0)
160	0	\|\| (tr.getFrom()->getDSTSavings() != 0 && tr.getTo()->getDSTSavings() == 0))
161	0	&& (date + MILLIS_PER_YEAR > nextTransitionTime)) {
162
163	0	int32_t year, month, dom, dow, doy, mid;
164	0	UDate d;
165
166		// Get local wall time for the next transition time
167	0	Grego::timeToFields(nextTransitionTime + initialRaw + initialDst,
168	0	year, month, dom, dow, doy, mid);
169	0	int32_t weekInMonth = Grego::dayOfWeekInMonth(year, month, dom);
170		// Create DOW rule
171	0	DateTimeRule *dtr = new DateTimeRule(month, weekInMonth, dow, mid, DateTimeRule::WALL_TIME);
172	0	tr.getTo()->getName(name);
173
174		// Note: SimpleTimeZone does not support raw offset change.
175		// So we always use raw offset of the given time for the rule,
176		// even raw offset is changed. This will result that the result
177		// zone to return wrong offset after the transition.
178		// When we encounter such case, we do not inspect next next
179		// transition for another rule.
180	0	ar1 = new AnnualTimeZoneRule(name, initialRaw, tr.getTo()->getDSTSavings(),
181	0	dtr, year, AnnualTimeZoneRule::MAX_YEAR);
182
183	0	if (tr.getTo()->getRawOffset() == initialRaw) {
184		// Get the next next transition
185	0	avail = getNextTransition(nextTransitionTime, FALSE, tr);
186	0	if (avail) {
187		// Check if the next next transition is either DST->STD or STD->DST
188		// and within roughly 1 year from the next transition
189	0	if (((tr.getFrom()->getDSTSavings() == 0 && tr.getTo()->getDSTSavings() != 0)
190	0	\|\| (tr.getFrom()->getDSTSavings() != 0 && tr.getTo()->getDSTSavings() == 0))
191	0	&& nextTransitionTime + MILLIS_PER_YEAR > tr.getTime()) {
192
193		// Get local wall time for the next transition time
194	0	Grego::timeToFields(tr.getTime() + tr.getFrom()->getRawOffset() + tr.getFrom()->getDSTSavings(),
195	0	year, month, dom, dow, doy, mid);
196	0	weekInMonth = Grego::dayOfWeekInMonth(year, month, dom);
197		// Generate another DOW rule
198	0	dtr = new DateTimeRule(month, weekInMonth, dow, mid, DateTimeRule::WALL_TIME);
199	0	tr.getTo()->getName(name);
200	0	ar2 = new AnnualTimeZoneRule(name, tr.getTo()->getRawOffset(), tr.getTo()->getDSTSavings(),
201	0	dtr, year - 1, AnnualTimeZoneRule::MAX_YEAR);
202
203		// Make sure this rule can be applied to the specified date
204	0	avail = ar2->getPreviousStart(date, tr.getFrom()->getRawOffset(), tr.getFrom()->getDSTSavings(), TRUE, d);
205	0	if (!avail \|\| d > date
206	0	\|\| initialRaw != tr.getTo()->getRawOffset()
207	0	\|\| initialDst != tr.getTo()->getDSTSavings()) {
208		// We cannot use this rule as the second transition rule
209	0	delete ar2;
210	0	ar2 = NULL;
211	0	}
212	0	}
213	0	}
214	0	}
215	0	if (ar2 == NULL) {
216		// Try previous transition
217	0	avail = getPreviousTransition(date, TRUE, tr);
218	0	if (avail) {
219		// Check if the previous transition is either DST->STD or STD->DST.
220		// The actual transition time does not matter here.
221	0	if ((tr.getFrom()->getDSTSavings() == 0 && tr.getTo()->getDSTSavings() != 0)
222	0	\|\| (tr.getFrom()->getDSTSavings() != 0 && tr.getTo()->getDSTSavings() == 0)) {
223
224		// Generate another DOW rule
225	0	Grego::timeToFields(tr.getTime() + tr.getFrom()->getRawOffset() + tr.getFrom()->getDSTSavings(),
226	0	year, month, dom, dow, doy, mid);
227	0	weekInMonth = Grego::dayOfWeekInMonth(year, month, dom);
228	0	dtr = new DateTimeRule(month, weekInMonth, dow, mid, DateTimeRule::WALL_TIME);
229	0	tr.getTo()->getName(name);
230
231		// second rule raw/dst offsets should match raw/dst offsets
232		// at the given time
233	0	ar2 = new AnnualTimeZoneRule(name, initialRaw, initialDst,
234	0	dtr, ar1->getStartYear() - 1, AnnualTimeZoneRule::MAX_YEAR);
235
236		// Check if this rule start after the first rule after the specified date
237	0	avail = ar2->getNextStart(date, tr.getFrom()->getRawOffset(), tr.getFrom()->getDSTSavings(), FALSE, d);
238	0	if (!avail \|\| d <= nextTransitionTime) {
239		// We cannot use this rule as the second transition rule
240	0	delete ar2;
241	0	ar2 = NULL;
242	0	}
243	0	}
244	0	}
245	0	}
246	0	if (ar2 == NULL) {
247		// Cannot find a good pair of AnnualTimeZoneRule
248	0	delete ar1;
249	0	ar1 = NULL;
250	0	} else {
251		// The initial rule should represent the rule before the previous transition
252	0	ar1->getName(initialName);
253	0	initialRaw = ar1->getRawOffset();
254	0	initialDst = ar1->getDSTSavings();
255	0	}
256	0	}
257	0	}
258	0	else {
259		// Try the previous one
260	0	avail = getPreviousTransition(date, TRUE, tr);
261	0	if (avail) {
262	0	tr.getTo()->getName(initialName);
263	0	initialRaw = tr.getTo()->getRawOffset();
264	0	initialDst = tr.getTo()->getDSTSavings();
265	0	} else {
266		// No transitions in the past. Just use the current offsets
267	0	getOffset(date, FALSE, initialRaw, initialDst, status);
268	0	if (U_FAILURE(status)) {
269	0	return;
270	0	}
271	0	}
272	0	}
273		// Set the initial rule
274	0	initial = new InitialTimeZoneRule(initialName, initialRaw, initialDst);
275
276		// Set the standard and daylight saving rules
277	0	if (ar1 != NULL && ar2 != NULL) {
278	0	if (ar1->getDSTSavings() != 0) {
279	0	dst = ar1;
280	0	std = ar2;
281	0	} else {
282	0	std = ar1;
283	0	dst = ar2;
284	0	}
285	0	}
286	0	}
287
288		void
289		BasicTimeZone::getTimeZoneRulesAfter(UDate start, InitialTimeZoneRule*& initial,
290	0	UVector*& transitionRules, UErrorCode& status) const {
291	0	if (U_FAILURE(status)) {
292	0	return;
293	0	}
294
295	0	const InitialTimeZoneRule *orgini;
296	0	const TimeZoneRule **orgtrs = NULL;
297	0	TimeZoneTransition tzt;
298	0	UBool avail;
299	0	UVector *orgRules = NULL;
300	0	int32_t ruleCount;
301	0	TimeZoneRule *r = NULL;
302	0	UBool *done = NULL;
303	0	InitialTimeZoneRule *res_initial = NULL;
304	0	UVector *filteredRules = NULL;
305	0	UnicodeString name;
306	0	int32_t i;
307	0	UDate time, t;
308	0	UDate *newTimes = NULL;
309	0	UDate firstStart;
310	0	UBool bFinalStd = FALSE, bFinalDst = FALSE;
311
312		// Original transition rules
313	0	ruleCount = countTransitionRules(status);
314	0	if (U_FAILURE(status)) {
315	0	return;
316	0	}
317	0	orgRules = new UVector(ruleCount, status);
318	0	if (U_FAILURE(status)) {
319	0	return;
320	0	}
321	0	orgtrs = (const TimeZoneRule*)uprv_malloc(sizeof(TimeZoneRule)*ruleCount);
322	0	if (orgtrs == NULL) {
323	0	status = U_MEMORY_ALLOCATION_ERROR;
324	0	goto error;
325	0	}
326	0	getTimeZoneRules(orgini, orgtrs, ruleCount, status);
327	0	if (U_FAILURE(status)) {
328	0	goto error;
329	0	}
330	0	for (i = 0; i < ruleCount; i++) {
331	0	orgRules->addElementX(orgtrs[i]->clone(), status);
332	0	if (U_FAILURE(status)) {
333	0	goto error;
334	0	}
335	0	}
336	0	uprv_free(orgtrs);
337	0	orgtrs = NULL;
338
339	0	avail = getPreviousTransition(start, TRUE, tzt);
340	0	if (!avail) {
341		// No need to filter out rules only applicable to time before the start
342	0	initial = orgini->clone();
343	0	transitionRules = orgRules;
344	0	return;
345	0	}
346
347	0	done = (UBool)uprv_malloc(sizeof(UBool)ruleCount);
348	0	if (done == NULL) {
349	0	status = U_MEMORY_ALLOCATION_ERROR;
350	0	goto error;
351	0	}
352	0	filteredRules = new UVector(status);
353	0	if (U_FAILURE(status)) {
354	0	goto error;
355	0	}
356
357		// Create initial rule
358	0	tzt.getTo()->getName(name);
359	0	res_initial = new InitialTimeZoneRule(name, tzt.getTo()->getRawOffset(),
360	0	tzt.getTo()->getDSTSavings());
361
362		// Mark rules which does not need to be processed
363	0	for (i = 0; i < ruleCount; i++) {
364	0	r = (TimeZoneRule*)orgRules->elementAt(i);
365	0	avail = r->getNextStart(start, res_initial->getRawOffset(), res_initial->getDSTSavings(), FALSE, time);
366	0	done[i] = !avail;
367	0	}
368
369	0	time = start;
370	0	while (!bFinalStd \|\| !bFinalDst) {
371	0	avail = getNextTransition(time, FALSE, tzt);
372	0	if (!avail) {
373	0	break;
374	0	}
375	0	UDate updatedTime = tzt.getTime();
376	0	if (updatedTime == time) {
377		// Can get here if rules for start & end of daylight time have exactly
378		// the same time.
379		// TODO: fix getNextTransition() to prevent it?
380	0	status = U_INVALID_STATE_ERROR;
381	0	goto error;
382	0	}
383	0	time = updatedTime;
384
385	0	const TimeZoneRule *toRule = tzt.getTo();
386	0	for (i = 0; i < ruleCount; i++) {
387	0	r = (TimeZoneRule*)orgRules->elementAt(i);
388	0	if (r == toRule) {
389	0	break;
390	0	}
391	0	}
392	0	if (i >= ruleCount) {
393		// This case should never happen
394	0	status = U_INVALID_STATE_ERROR;
395	0	goto error;
396	0	}
397	0	if (done[i]) {
398	0	continue;
399	0	}
400	0	const TimeArrayTimeZoneRule tar = dynamic_cast<const TimeArrayTimeZoneRule >(toRule);
401	0	const AnnualTimeZoneRule *ar;
402	0	if (tar != NULL) {
403		// Get the previous raw offset and DST savings before the very first start time
404	0	TimeZoneTransition tzt0;
405	0	t = start;
406	0	while (TRUE) {
407	0	avail = getNextTransition(t, FALSE, tzt0);
408	0	if (!avail) {
409	0	break;
410	0	}
411	0	if ((tzt0.getTo()) == tar) {
412	0	break;
413	0	}
414	0	t = tzt0.getTime();
415	0	}
416	0	if (avail) {
417		// Check if the entire start times to be added
418	0	tar->getFirstStart(tzt.getFrom()->getRawOffset(), tzt.getFrom()->getDSTSavings(), firstStart);
419	0	if (firstStart > start) {
420		// Just add the rule as is
421	0	filteredRules->addElementX(tar->clone(), status);
422	0	if (U_FAILURE(status)) {
423	0	goto error;
424	0	}
425	0	} else {
426		// Collect transitions after the start time
427	0	int32_t startTimes;
428	0	DateTimeRule::TimeRuleType timeType;
429	0	int32_t idx;
430
431	0	startTimes = tar->countStartTimes();
432	0	timeType = tar->getTimeType();
433	0	for (idx = 0; idx < startTimes; idx++) {
434	0	tar->getStartTimeAt(idx, t);
435	0	if (timeType == DateTimeRule::STANDARD_TIME) {
436	0	t -= tzt.getFrom()->getRawOffset();
437	0	}
438	0	if (timeType == DateTimeRule::WALL_TIME) {
439	0	t -= tzt.getFrom()->getDSTSavings();
440	0	}
441	0	if (t > start) {
442	0	break;
443	0	}
444	0	}
445	0	int32_t asize = startTimes - idx;
446	0	if (asize > 0) {
447	0	newTimes = (UDate)uprv_malloc(sizeof(UDate) asize);
448	0	if (newTimes == NULL) {
449	0	status = U_MEMORY_ALLOCATION_ERROR;
450	0	goto error;
451	0	}
452	0	for (int32_t newidx = 0; newidx < asize; newidx++) {
453	0	tar->getStartTimeAt(idx + newidx, newTimes[newidx]);
454	0	if (U_FAILURE(status)) {
455	0	uprv_free(newTimes);
456	0	newTimes = NULL;
457	0	goto error;
458	0	}
459	0	}
460	0	tar->getName(name);
461	0	TimeArrayTimeZoneRule *newTar = new TimeArrayTimeZoneRule(name,
462	0	tar->getRawOffset(), tar->getDSTSavings(), newTimes, asize, timeType);
463	0	uprv_free(newTimes);
464	0	filteredRules->addElementX(newTar, status);
465	0	if (U_FAILURE(status)) {
466	0	goto error;
467	0	}
468	0	}
469	0	}
470	0	}
471	0	} else if ((ar = dynamic_cast<const AnnualTimeZoneRule *>(toRule)) != NULL) {
472	0	ar->getFirstStart(tzt.getFrom()->getRawOffset(), tzt.getFrom()->getDSTSavings(), firstStart);
473	0	if (firstStart == tzt.getTime()) {
474		// Just add the rule as is
475	0	filteredRules->addElementX(ar->clone(), status);
476	0	if (U_FAILURE(status)) {
477	0	goto error;
478	0	}
479	0	} else {
480		// Calculate the transition year
481	0	int32_t year, month, dom, dow, doy, mid;
482	0	Grego::timeToFields(tzt.getTime(), year, month, dom, dow, doy, mid);
483		// Re-create the rule
484	0	ar->getName(name);
485	0	AnnualTimeZoneRule *newAr = new AnnualTimeZoneRule(name, ar->getRawOffset(), ar->getDSTSavings(),
486	0	*(ar->getRule()), year, ar->getEndYear());
487	0	filteredRules->addElementX(newAr, status);
488	0	if (U_FAILURE(status)) {
489	0	goto error;
490	0	}
491	0	}
492		// check if this is a final rule
493	0	if (ar->getEndYear() == AnnualTimeZoneRule::MAX_YEAR) {
494		// After bot final standard and dst rules are processed,
495		// exit this while loop.
496	0	if (ar->getDSTSavings() == 0) {
497	0	bFinalStd = TRUE;
498	0	} else {
499	0	bFinalDst = TRUE;
500	0	}
501	0	}
502	0	}
503	0	done[i] = TRUE;
504	0	}
505
506		// Set the results
507	0	if (orgRules != NULL) {
508	0	while (!orgRules->isEmpty()) {
509	0	r = (TimeZoneRule*)orgRules->orphanElementAt(0);
510	0	delete r;
511	0	}
512	0	delete orgRules;
513	0	}
514	0	if (done != NULL) {
515	0	uprv_free(done);
516	0	}
517
518	0	initial = res_initial;
519	0	transitionRules = filteredRules;
520	0	return;
521
522	0	error:
523	0	if (orgtrs != NULL) {
524	0	uprv_free(orgtrs);
525	0	}
526	0	if (orgRules != NULL) {
527	0	while (!orgRules->isEmpty()) {
528	0	r = (TimeZoneRule*)orgRules->orphanElementAt(0);
529	0	delete r;
530	0	}
531	0	delete orgRules;
532	0	}
533	0	if (done != NULL) {
534	0	if (filteredRules != NULL) {
535	0	while (!filteredRules->isEmpty()) {
536	0	r = (TimeZoneRule*)filteredRules->orphanElementAt(0);
537	0	delete r;
538	0	}
539	0	delete filteredRules;
540	0	}
541	0	delete res_initial;
542	0	uprv_free(done);
543	0	}
544
545	0	initial = NULL;
546	0	transitionRules = NULL;
547	0	}
548
549		void
550		BasicTimeZone::getOffsetFromLocal(UDate /date/, UTimeZoneLocalOption /nonExistingTimeOpt/,
551		UTimeZoneLocalOption /duplicatedTimeOpt/,
552		int32_t& /rawOffset/, int32_t& /dstOffset/,
553	0	UErrorCode& status) const {
554	0	if (U_FAILURE(status)) {
555	0	return;
556	0	}
557	0	status = U_UNSUPPORTED_ERROR;
558	0	}
559
560		void BasicTimeZone::getOffsetFromLocal(UDate date, int32_t nonExistingTimeOpt, int32_t duplicatedTimeOpt,
561		int32_t& rawOffset, int32_t& dstOffset,
562	0	UErrorCode& status) const {
563	0	getOffsetFromLocal(date, (UTimeZoneLocalOption)nonExistingTimeOpt,
564	0	(UTimeZoneLocalOption)duplicatedTimeOpt, rawOffset, dstOffset, status);
565	0	}
566
567		U_NAMESPACE_END
568
569		#endif /* #if !UCONFIG_NO_FORMATTING */
570
571		//eof