1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/intl/icu/source/i18n/taiwncal.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,181 @@
1.4 +/*
1.5 + *******************************************************************************
1.6 + * Copyright (C) 2003-2013, International Business Machines Corporation and
1.7 + * others. All Rights Reserved.
1.8 + *******************************************************************************
1.9 + *
1.10 + * File TAIWNCAL.CPP
1.11 + *
1.12 + * Modification History:
1.13 + * 05/13/2003 srl copied from gregocal.cpp
1.14 + * 06/29/2007 srl copied from buddhcal.cpp
1.15 + * 05/12/2008 jce modified to use calendar=roc per CLDR
1.16 + *
1.17 + */
1.18 +
1.19 +#include "unicode/utypes.h"
1.20 +
1.21 +#if !UCONFIG_NO_FORMATTING
1.22 +
1.23 +#include "taiwncal.h"
1.24 +#include "unicode/gregocal.h"
1.25 +#include "umutex.h"
1.26 +#include <float.h>
1.27 +
1.28 +U_NAMESPACE_BEGIN
1.29 +
1.30 +UOBJECT_DEFINE_RTTI_IMPLEMENTATION(TaiwanCalendar)
1.31 +
1.32 +static const int32_t kTaiwanEraStart = 1911; // 1911 (Gregorian)
1.33 +
1.34 +static const int32_t kGregorianEpoch = 1970;
1.35 +
1.36 +TaiwanCalendar::TaiwanCalendar(const Locale& aLocale, UErrorCode& success)
1.37 +: GregorianCalendar(aLocale, success)
1.38 +{
1.39 + setTimeInMillis(getNow(), success); // Call this again now that the vtable is set up properly.
1.40 +}
1.41 +
1.42 +TaiwanCalendar::~TaiwanCalendar()
1.43 +{
1.44 +}
1.45 +
1.46 +TaiwanCalendar::TaiwanCalendar(const TaiwanCalendar& source)
1.47 +: GregorianCalendar(source)
1.48 +{
1.49 +}
1.50 +
1.51 +TaiwanCalendar& TaiwanCalendar::operator= ( const TaiwanCalendar& right)
1.52 +{
1.53 + GregorianCalendar::operator=(right);
1.54 + return *this;
1.55 +}
1.56 +
1.57 +Calendar* TaiwanCalendar::clone(void) const
1.58 +{
1.59 + return new TaiwanCalendar(*this);
1.60 +}
1.61 +
1.62 +const char *TaiwanCalendar::getType() const
1.63 +{
1.64 + return "roc";
1.65 +}
1.66 +
1.67 +int32_t TaiwanCalendar::handleGetExtendedYear()
1.68 +{
1.69 + // EXTENDED_YEAR in TaiwanCalendar is a Gregorian year
1.70 + // The default value of EXTENDED_YEAR is 1970 (Minguo 59)
1.71 + int32_t year = kGregorianEpoch;
1.72 +
1.73 + if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR
1.74 + && newerField(UCAL_EXTENDED_YEAR, UCAL_ERA) == UCAL_EXTENDED_YEAR) {
1.75 + year = internalGet(UCAL_EXTENDED_YEAR, kGregorianEpoch);
1.76 + } else {
1.77 + int32_t era = internalGet(UCAL_ERA, MINGUO);
1.78 + if(era == MINGUO) {
1.79 + year = internalGet(UCAL_YEAR, 1) + kTaiwanEraStart;
1.80 + } else if(era == BEFORE_MINGUO) {
1.81 + year = 1 - internalGet(UCAL_YEAR, 1) + kTaiwanEraStart;
1.82 + }
1.83 + }
1.84 + return year;
1.85 +}
1.86 +
1.87 +void TaiwanCalendar::handleComputeFields(int32_t julianDay, UErrorCode& status)
1.88 +{
1.89 + GregorianCalendar::handleComputeFields(julianDay, status);
1.90 + int32_t y = internalGet(UCAL_EXTENDED_YEAR) - kTaiwanEraStart;
1.91 + if(y>0) {
1.92 + internalSet(UCAL_ERA, MINGUO);
1.93 + internalSet(UCAL_YEAR, y);
1.94 + } else {
1.95 + internalSet(UCAL_ERA, BEFORE_MINGUO);
1.96 + internalSet(UCAL_YEAR, 1-y);
1.97 + }
1.98 +}
1.99 +
1.100 +int32_t TaiwanCalendar::handleGetLimit(UCalendarDateFields field, ELimitType limitType) const
1.101 +{
1.102 + if(field == UCAL_ERA) {
1.103 + if(limitType == UCAL_LIMIT_MINIMUM || limitType == UCAL_LIMIT_GREATEST_MINIMUM) {
1.104 + return BEFORE_MINGUO;
1.105 + } else {
1.106 + return MINGUO;
1.107 + }
1.108 + } else {
1.109 + return GregorianCalendar::handleGetLimit(field,limitType);
1.110 + }
1.111 +}
1.112 +
1.113 +#if 0
1.114 +void TaiwanCalendar::timeToFields(UDate theTime, UBool quick, UErrorCode& status)
1.115 +{
1.116 + //Calendar::timeToFields(theTime, quick, status);
1.117 +
1.118 + int32_t era = internalGet(UCAL_ERA);
1.119 + int32_t year = internalGet(UCAL_YEAR);
1.120 +
1.121 + if(era == GregorianCalendar::BC) {
1.122 + year = 1-year;
1.123 + era = TaiwanCalendar::MINGUO;
1.124 + } else if(era == GregorianCalendar::AD) {
1.125 + era = TaiwanCalendar::MINGUO;
1.126 + } else {
1.127 + status = U_INTERNAL_PROGRAM_ERROR;
1.128 + }
1.129 +
1.130 + year = year - kTaiwanEraStart;
1.131 +
1.132 + internalSet(UCAL_ERA, era);
1.133 + internalSet(UCAL_YEAR, year);
1.134 +}
1.135 +#endif
1.136 +
1.137 +/**
1.138 + * The system maintains a static default century start date and Year. They are
1.139 + * initialized the first time they are used. Once the system default century date
1.140 + * and year are set, they do not change.
1.141 + */
1.142 +static UDate gSystemDefaultCenturyStart = DBL_MIN;
1.143 +static int32_t gSystemDefaultCenturyStartYear = -1;
1.144 +static icu::UInitOnce gSystemDefaultCenturyInit = U_INITONCE_INITIALIZER;
1.145 +
1.146 +UBool TaiwanCalendar::haveDefaultCentury() const
1.147 +{
1.148 + return TRUE;
1.149 +}
1.150 +
1.151 +static void U_CALLCONV initializeSystemDefaultCentury()
1.152 +{
1.153 + // initialize systemDefaultCentury and systemDefaultCenturyYear based
1.154 + // on the current time. They'll be set to 80 years before
1.155 + // the current time.
1.156 + UErrorCode status = U_ZERO_ERROR;
1.157 + TaiwanCalendar calendar(Locale("@calendar=roc"),status);
1.158 + if (U_SUCCESS(status))
1.159 + {
1.160 + calendar.setTime(Calendar::getNow(), status);
1.161 + calendar.add(UCAL_YEAR, -80, status);
1.162 +
1.163 + gSystemDefaultCenturyStart = calendar.getTime(status);
1.164 + gSystemDefaultCenturyStartYear = calendar.get(UCAL_YEAR, status);
1.165 + }
1.166 + // We have no recourse upon failure unless we want to propagate the failure
1.167 + // out.
1.168 +}
1.169 +
1.170 +UDate TaiwanCalendar::defaultCenturyStart() const {
1.171 + // lazy-evaluate systemDefaultCenturyStart
1.172 + umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury);
1.173 + return gSystemDefaultCenturyStart;
1.174 +}
1.175 +
1.176 +int32_t TaiwanCalendar::defaultCenturyStartYear() const {
1.177 + // lazy-evaluate systemDefaultCenturyStartYear
1.178 + umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury);
1.179 + return gSystemDefaultCenturyStartYear;
1.180 +}
1.181 +
1.182 +U_NAMESPACE_END
1.183 +
1.184 +#endif
