630 lines
19 KiB
C++
630 lines
19 KiB
C++
// © 2016 and later: Unicode, Inc. and others.
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// License & terms of use: http://www.unicode.org/copyright.html
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/*
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*******************************************************************************
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* Copyright (C) 2007-2012, International Business Machines Corporation and
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* others. All Rights Reserved.
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*******************************************************************************
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*/
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#include "utypeinfo.h" // for 'typeid' to work
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#include "unicode/utypes.h"
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#if !UCONFIG_NO_FORMATTING
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#include "unicode/tzrule.h"
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#include "unicode/ucal.h"
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#include "gregoimp.h"
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#include "cmemory.h"
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#include "uarrsort.h"
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U_CDECL_BEGIN
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// UComparator function for sorting start times
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static int32_t U_CALLCONV
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compareDates(const void * /*context*/, const void *left, const void *right) {
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UDate l = *((UDate*)left);
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UDate r = *((UDate*)right);
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int32_t res = l < r ? -1 : (l == r ? 0 : 1);
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return res;
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}
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U_CDECL_END
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U_NAMESPACE_BEGIN
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TimeZoneRule::TimeZoneRule(const UnicodeString& name, int32_t rawOffset, int32_t dstSavings)
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: UObject(), fName(name), fRawOffset(rawOffset), fDSTSavings(dstSavings) {
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}
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TimeZoneRule::TimeZoneRule(const TimeZoneRule& source)
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: UObject(source), fName(source.fName), fRawOffset(source.fRawOffset), fDSTSavings(source.fDSTSavings) {
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}
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TimeZoneRule::~TimeZoneRule() {
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}
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TimeZoneRule&
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TimeZoneRule::operator=(const TimeZoneRule& right) {
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if (this != &right) {
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fName = right.fName;
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fRawOffset = right.fRawOffset;
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fDSTSavings = right.fDSTSavings;
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}
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return *this;
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}
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bool
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TimeZoneRule::operator==(const TimeZoneRule& that) const {
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return ((this == &that) ||
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(typeid(*this) == typeid(that) &&
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fName == that.fName &&
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fRawOffset == that.fRawOffset &&
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fDSTSavings == that.fDSTSavings));
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}
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bool
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TimeZoneRule::operator!=(const TimeZoneRule& that) const {
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return !operator==(that);
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}
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UnicodeString&
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TimeZoneRule::getName(UnicodeString& name) const {
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name = fName;
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return name;
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}
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int32_t
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TimeZoneRule::getRawOffset(void) const {
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return fRawOffset;
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}
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int32_t
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TimeZoneRule::getDSTSavings(void) const {
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return fDSTSavings;
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}
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UBool
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TimeZoneRule::isEquivalentTo(const TimeZoneRule& other) const {
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return ((this == &other) ||
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(typeid(*this) == typeid(other) &&
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fRawOffset == other.fRawOffset &&
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fDSTSavings == other.fDSTSavings));
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}
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UOBJECT_DEFINE_RTTI_IMPLEMENTATION(InitialTimeZoneRule)
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InitialTimeZoneRule::InitialTimeZoneRule(const UnicodeString& name,
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int32_t rawOffset,
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int32_t dstSavings)
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: TimeZoneRule(name, rawOffset, dstSavings) {
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}
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InitialTimeZoneRule::InitialTimeZoneRule(const InitialTimeZoneRule& source)
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: TimeZoneRule(source) {
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}
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InitialTimeZoneRule::~InitialTimeZoneRule() {
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}
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InitialTimeZoneRule*
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InitialTimeZoneRule::clone() const {
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return new InitialTimeZoneRule(*this);
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}
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InitialTimeZoneRule&
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InitialTimeZoneRule::operator=(const InitialTimeZoneRule& right) {
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if (this != &right) {
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TimeZoneRule::operator=(right);
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}
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return *this;
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}
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bool
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InitialTimeZoneRule::operator==(const TimeZoneRule& that) const {
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return ((this == &that) ||
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(typeid(*this) == typeid(that) &&
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TimeZoneRule::operator==(that)));
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}
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bool
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InitialTimeZoneRule::operator!=(const TimeZoneRule& that) const {
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return !operator==(that);
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}
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UBool
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InitialTimeZoneRule::isEquivalentTo(const TimeZoneRule& other) const {
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if (this == &other) {
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return TRUE;
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}
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if (typeid(*this) != typeid(other) || TimeZoneRule::isEquivalentTo(other) == FALSE) {
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return FALSE;
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}
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return TRUE;
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}
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UBool
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InitialTimeZoneRule::getFirstStart(int32_t /*prevRawOffset*/,
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int32_t /*prevDSTSavings*/,
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UDate& /*result*/) const {
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return FALSE;
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}
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UBool
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InitialTimeZoneRule::getFinalStart(int32_t /*prevRawOffset*/,
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int32_t /*prevDSTSavings*/,
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UDate& /*result*/) const {
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return FALSE;
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}
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UBool
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InitialTimeZoneRule::getNextStart(UDate /*base*/,
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int32_t /*prevRawOffset*/,
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int32_t /*prevDSTSavings*/,
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UBool /*inclusive*/,
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UDate& /*result*/) const {
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return FALSE;
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}
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UBool
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InitialTimeZoneRule::getPreviousStart(UDate /*base*/,
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int32_t /*prevRawOffset*/,
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int32_t /*prevDSTSavings*/,
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UBool /*inclusive*/,
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UDate& /*result*/) const {
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return FALSE;
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}
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UOBJECT_DEFINE_RTTI_IMPLEMENTATION(AnnualTimeZoneRule)
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const int32_t AnnualTimeZoneRule::MAX_YEAR = 0x7FFFFFFF; /* max signed int32 */
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AnnualTimeZoneRule::AnnualTimeZoneRule(const UnicodeString& name,
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int32_t rawOffset,
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int32_t dstSavings,
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const DateTimeRule& dateTimeRule,
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int32_t startYear,
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int32_t endYear)
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: TimeZoneRule(name, rawOffset, dstSavings), fDateTimeRule(new DateTimeRule(dateTimeRule)),
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fStartYear(startYear), fEndYear(endYear) {
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}
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AnnualTimeZoneRule::AnnualTimeZoneRule(const UnicodeString& name,
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int32_t rawOffset,
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int32_t dstSavings,
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DateTimeRule* dateTimeRule,
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int32_t startYear,
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int32_t endYear)
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: TimeZoneRule(name, rawOffset, dstSavings), fDateTimeRule(dateTimeRule),
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fStartYear(startYear), fEndYear(endYear) {
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}
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AnnualTimeZoneRule::AnnualTimeZoneRule(const AnnualTimeZoneRule& source)
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: TimeZoneRule(source), fDateTimeRule(new DateTimeRule(*(source.fDateTimeRule))),
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fStartYear(source.fStartYear), fEndYear(source.fEndYear) {
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}
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AnnualTimeZoneRule::~AnnualTimeZoneRule() {
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delete fDateTimeRule;
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}
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AnnualTimeZoneRule*
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AnnualTimeZoneRule::clone(void) const {
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return new AnnualTimeZoneRule(*this);
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}
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AnnualTimeZoneRule&
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AnnualTimeZoneRule::operator=(const AnnualTimeZoneRule& right) {
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if (this != &right) {
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TimeZoneRule::operator=(right);
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delete fDateTimeRule;
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fDateTimeRule = right.fDateTimeRule->clone();
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fStartYear = right.fStartYear;
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fEndYear = right.fEndYear;
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}
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return *this;
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}
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bool
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AnnualTimeZoneRule::operator==(const TimeZoneRule& that) const {
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if (this == &that) {
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return true;
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}
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if (typeid(*this) != typeid(that)) {
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return false;
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}
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AnnualTimeZoneRule *atzr = (AnnualTimeZoneRule*)&that;
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return (*fDateTimeRule == *(atzr->fDateTimeRule) &&
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fStartYear == atzr->fStartYear &&
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fEndYear == atzr->fEndYear);
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}
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bool
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AnnualTimeZoneRule::operator!=(const TimeZoneRule& that) const {
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return !operator==(that);
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}
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const DateTimeRule*
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AnnualTimeZoneRule::getRule() const {
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return fDateTimeRule;
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}
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int32_t
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AnnualTimeZoneRule::getStartYear() const {
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return fStartYear;
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}
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int32_t
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AnnualTimeZoneRule::getEndYear() const {
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return fEndYear;
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}
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UBool
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AnnualTimeZoneRule::getStartInYear(int32_t year,
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int32_t prevRawOffset,
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int32_t prevDSTSavings,
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UDate &result) const {
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if (year < fStartYear || year > fEndYear) {
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return FALSE;
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}
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double ruleDay;
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DateTimeRule::DateRuleType type = fDateTimeRule->getDateRuleType();
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if (type == DateTimeRule::DOM) {
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ruleDay = Grego::fieldsToDay(year, fDateTimeRule->getRuleMonth(), fDateTimeRule->getRuleDayOfMonth());
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} else {
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UBool after = TRUE;
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if (type == DateTimeRule::DOW) {
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// Normalize DOW rule into DOW_GEQ_DOM or DOW_LEQ_DOM
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int32_t weeks = fDateTimeRule->getRuleWeekInMonth();
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if (weeks > 0) {
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ruleDay = Grego::fieldsToDay(year, fDateTimeRule->getRuleMonth(), 1);
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ruleDay += 7 * (weeks - 1);
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} else {
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after = FALSE;
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ruleDay = Grego::fieldsToDay(year, fDateTimeRule->getRuleMonth(),
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Grego::monthLength(year, fDateTimeRule->getRuleMonth()));
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ruleDay += 7 * (weeks + 1);
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}
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} else {
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int32_t month = fDateTimeRule->getRuleMonth();
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int32_t dom = fDateTimeRule->getRuleDayOfMonth();
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if (type == DateTimeRule::DOW_LEQ_DOM) {
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after = FALSE;
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// Handle Feb <=29
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if (month == UCAL_FEBRUARY && dom == 29 && !Grego::isLeapYear(year)) {
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dom--;
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}
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}
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ruleDay = Grego::fieldsToDay(year, month, dom);
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}
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int32_t dow = Grego::dayOfWeek(ruleDay);
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int32_t delta = fDateTimeRule->getRuleDayOfWeek() - dow;
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if (after) {
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delta = delta < 0 ? delta + 7 : delta;
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} else {
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delta = delta > 0 ? delta - 7 : delta;
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}
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ruleDay += delta;
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}
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result = ruleDay*U_MILLIS_PER_DAY + fDateTimeRule->getRuleMillisInDay();
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if (fDateTimeRule->getTimeRuleType() != DateTimeRule::UTC_TIME) {
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result -= prevRawOffset;
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}
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if (fDateTimeRule->getTimeRuleType() == DateTimeRule::WALL_TIME) {
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result -= prevDSTSavings;
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}
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return TRUE;
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}
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UBool
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AnnualTimeZoneRule::isEquivalentTo(const TimeZoneRule& other) const {
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if (this == &other) {
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return TRUE;
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}
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if (typeid(*this) != typeid(other) || TimeZoneRule::isEquivalentTo(other) == FALSE) {
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return FALSE;
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}
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AnnualTimeZoneRule* that = (AnnualTimeZoneRule*)&other;
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return (*fDateTimeRule == *(that->fDateTimeRule) &&
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fStartYear == that->fStartYear &&
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fEndYear == that->fEndYear);
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}
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UBool
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AnnualTimeZoneRule::getFirstStart(int32_t prevRawOffset,
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int32_t prevDSTSavings,
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UDate& result) const {
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return getStartInYear(fStartYear, prevRawOffset, prevDSTSavings, result);
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}
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UBool
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AnnualTimeZoneRule::getFinalStart(int32_t prevRawOffset,
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int32_t prevDSTSavings,
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UDate& result) const {
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if (fEndYear == MAX_YEAR) {
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return FALSE;
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}
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return getStartInYear(fEndYear, prevRawOffset, prevDSTSavings, result);
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}
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UBool
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AnnualTimeZoneRule::getNextStart(UDate base,
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int32_t prevRawOffset,
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int32_t prevDSTSavings,
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UBool inclusive,
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UDate& result) const {
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int32_t year, month, dom, dow, doy, mid;
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Grego::timeToFields(base, year, month, dom, dow, doy, mid);
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if (year < fStartYear) {
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return getFirstStart(prevRawOffset, prevDSTSavings, result);
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}
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UDate tmp;
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if (getStartInYear(year, prevRawOffset, prevDSTSavings, tmp)) {
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if (tmp < base || (!inclusive && (tmp == base))) {
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// Return the next one
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return getStartInYear(year + 1, prevRawOffset, prevDSTSavings, result);
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} else {
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result = tmp;
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return TRUE;
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}
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}
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return FALSE;
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}
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UBool
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AnnualTimeZoneRule::getPreviousStart(UDate base,
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int32_t prevRawOffset,
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int32_t prevDSTSavings,
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UBool inclusive,
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UDate& result) const {
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int32_t year, month, dom, dow, doy, mid;
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Grego::timeToFields(base, year, month, dom, dow, doy, mid);
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if (year > fEndYear) {
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return getFinalStart(prevRawOffset, prevDSTSavings, result);
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}
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UDate tmp;
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if (getStartInYear(year, prevRawOffset, prevDSTSavings, tmp)) {
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if (tmp > base || (!inclusive && (tmp == base))) {
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// Return the previous one
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return getStartInYear(year - 1, prevRawOffset, prevDSTSavings, result);
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} else {
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result = tmp;
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return TRUE;
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}
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}
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return FALSE;
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}
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UOBJECT_DEFINE_RTTI_IMPLEMENTATION(TimeArrayTimeZoneRule)
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TimeArrayTimeZoneRule::TimeArrayTimeZoneRule(const UnicodeString& name,
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int32_t rawOffset,
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int32_t dstSavings,
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const UDate* startTimes,
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int32_t numStartTimes,
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DateTimeRule::TimeRuleType timeRuleType)
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: TimeZoneRule(name, rawOffset, dstSavings), fTimeRuleType(timeRuleType),
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fStartTimes(NULL) {
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UErrorCode status = U_ZERO_ERROR;
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initStartTimes(startTimes, numStartTimes, status);
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//TODO - status?
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}
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TimeArrayTimeZoneRule::TimeArrayTimeZoneRule(const TimeArrayTimeZoneRule& source)
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: TimeZoneRule(source), fTimeRuleType(source.fTimeRuleType), fStartTimes(NULL) {
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UErrorCode status = U_ZERO_ERROR;
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initStartTimes(source.fStartTimes, source.fNumStartTimes, status);
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//TODO - status?
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}
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TimeArrayTimeZoneRule::~TimeArrayTimeZoneRule() {
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if (fStartTimes != NULL && fStartTimes != fLocalStartTimes) {
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uprv_free(fStartTimes);
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}
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}
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TimeArrayTimeZoneRule*
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TimeArrayTimeZoneRule::clone(void) const {
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return new TimeArrayTimeZoneRule(*this);
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}
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TimeArrayTimeZoneRule&
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TimeArrayTimeZoneRule::operator=(const TimeArrayTimeZoneRule& right) {
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if (this != &right) {
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TimeZoneRule::operator=(right);
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UErrorCode status = U_ZERO_ERROR;
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initStartTimes(right.fStartTimes, right.fNumStartTimes, status);
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//TODO - status?
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fTimeRuleType = right.fTimeRuleType;
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}
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return *this;
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}
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bool
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TimeArrayTimeZoneRule::operator==(const TimeZoneRule& that) const {
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if (this == &that) {
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return true;
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}
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if (typeid(*this) != typeid(that) || !TimeZoneRule::operator==(that)) {
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return false;
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}
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TimeArrayTimeZoneRule *tatzr = (TimeArrayTimeZoneRule*)&that;
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if (fTimeRuleType != tatzr->fTimeRuleType ||
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fNumStartTimes != tatzr->fNumStartTimes) {
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return false;
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}
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// Compare start times
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bool res = true;
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for (int32_t i = 0; i < fNumStartTimes; i++) {
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if (fStartTimes[i] != tatzr->fStartTimes[i]) {
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res = false;
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break;
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}
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}
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return res;
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}
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bool
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TimeArrayTimeZoneRule::operator!=(const TimeZoneRule& that) const {
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return !operator==(that);
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}
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DateTimeRule::TimeRuleType
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TimeArrayTimeZoneRule::getTimeType(void) const {
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return fTimeRuleType;
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}
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UBool
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TimeArrayTimeZoneRule::getStartTimeAt(int32_t index, UDate& result) const {
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if (index >= fNumStartTimes || index < 0) {
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return FALSE;
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}
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result = fStartTimes[index];
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return TRUE;
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}
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int32_t
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TimeArrayTimeZoneRule::countStartTimes(void) const {
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return fNumStartTimes;
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}
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UBool
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TimeArrayTimeZoneRule::isEquivalentTo(const TimeZoneRule& other) const {
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if (this == &other) {
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return TRUE;
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}
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if (typeid(*this) != typeid(other) || TimeZoneRule::isEquivalentTo(other) == FALSE) {
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return FALSE;
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}
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TimeArrayTimeZoneRule* that = (TimeArrayTimeZoneRule*)&other;
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if (fTimeRuleType != that->fTimeRuleType ||
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fNumStartTimes != that->fNumStartTimes) {
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return FALSE;
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}
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// Compare start times
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UBool res = TRUE;
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for (int32_t i = 0; i < fNumStartTimes; i++) {
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if (fStartTimes[i] != that->fStartTimes[i]) {
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res = FALSE;
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break;
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}
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}
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return res;
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}
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UBool
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TimeArrayTimeZoneRule::getFirstStart(int32_t prevRawOffset,
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int32_t prevDSTSavings,
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UDate& result) const {
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if (fNumStartTimes <= 0 || fStartTimes == NULL) {
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return FALSE;
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}
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result = getUTC(fStartTimes[0], prevRawOffset, prevDSTSavings);
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return TRUE;
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}
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UBool
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TimeArrayTimeZoneRule::getFinalStart(int32_t prevRawOffset,
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int32_t prevDSTSavings,
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UDate& result) const {
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if (fNumStartTimes <= 0 || fStartTimes == NULL) {
|
|
return FALSE;
|
|
}
|
|
result = getUTC(fStartTimes[fNumStartTimes - 1], prevRawOffset, prevDSTSavings);
|
|
return TRUE;
|
|
}
|
|
|
|
UBool
|
|
TimeArrayTimeZoneRule::getNextStart(UDate base,
|
|
int32_t prevRawOffset,
|
|
int32_t prevDSTSavings,
|
|
UBool inclusive,
|
|
UDate& result) const {
|
|
int32_t i = fNumStartTimes - 1;
|
|
for (; i >= 0; i--) {
|
|
UDate time = getUTC(fStartTimes[i], prevRawOffset, prevDSTSavings);
|
|
if (time < base || (!inclusive && time == base)) {
|
|
break;
|
|
}
|
|
result = time;
|
|
}
|
|
if (i == fNumStartTimes - 1) {
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
UBool
|
|
TimeArrayTimeZoneRule::getPreviousStart(UDate base,
|
|
int32_t prevRawOffset,
|
|
int32_t prevDSTSavings,
|
|
UBool inclusive,
|
|
UDate& result) const {
|
|
int32_t i = fNumStartTimes - 1;
|
|
for (; i >= 0; i--) {
|
|
UDate time = getUTC(fStartTimes[i], prevRawOffset, prevDSTSavings);
|
|
if (time < base || (inclusive && time == base)) {
|
|
result = time;
|
|
return TRUE;
|
|
}
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
// ---- private methods ------
|
|
|
|
UBool
|
|
TimeArrayTimeZoneRule::initStartTimes(const UDate source[], int32_t size, UErrorCode& status) {
|
|
// Free old array
|
|
if (fStartTimes != NULL && fStartTimes != fLocalStartTimes) {
|
|
uprv_free(fStartTimes);
|
|
}
|
|
// Allocate new one if needed
|
|
if (size > TIMEARRAY_STACK_BUFFER_SIZE) {
|
|
fStartTimes = (UDate*)uprv_malloc(sizeof(UDate)*size);
|
|
if (fStartTimes == NULL) {
|
|
status = U_MEMORY_ALLOCATION_ERROR;
|
|
fNumStartTimes = 0;
|
|
return FALSE;
|
|
}
|
|
} else {
|
|
fStartTimes = (UDate*)fLocalStartTimes;
|
|
}
|
|
uprv_memcpy(fStartTimes, source, sizeof(UDate)*size);
|
|
fNumStartTimes = size;
|
|
// Sort dates
|
|
uprv_sortArray(fStartTimes, fNumStartTimes, (int32_t)sizeof(UDate), compareDates, NULL, TRUE, &status);
|
|
if (U_FAILURE(status)) {
|
|
if (fStartTimes != NULL && fStartTimes != fLocalStartTimes) {
|
|
uprv_free(fStartTimes);
|
|
}
|
|
fNumStartTimes = 0;
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
UDate
|
|
TimeArrayTimeZoneRule::getUTC(UDate time, int32_t raw, int32_t dst) const {
|
|
if (fTimeRuleType != DateTimeRule::UTC_TIME) {
|
|
time -= raw;
|
|
}
|
|
if (fTimeRuleType == DateTimeRule::WALL_TIME) {
|
|
time -= dst;
|
|
}
|
|
return time;
|
|
}
|
|
|
|
U_NAMESPACE_END
|
|
|
|
#endif /* #if !UCONFIG_NO_FORMATTING */
|
|
|
|
//eof
|
|
|