1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/intl/icu/source/i18n/buddhcal.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,179 @@
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 BUDDHCAL.CPP
1.11 +*
1.12 +* Modification History:
1.13 +* 05/13/2003 srl copied from gregocal.cpp
1.14 +*
1.15 +*/
1.16 +
1.17 +#include "unicode/utypes.h"
1.18 +
1.19 +#if !UCONFIG_NO_FORMATTING
1.20 +
1.21 +#include "buddhcal.h"
1.22 +#include "unicode/gregocal.h"
1.23 +#include "umutex.h"
1.24 +#include <float.h>
1.25 +
1.26 +U_NAMESPACE_BEGIN
1.27 +
1.28 +UOBJECT_DEFINE_RTTI_IMPLEMENTATION(BuddhistCalendar)
1.29 +
1.30 +//static const int32_t kMaxEra = 0; // only 1 era
1.31 +
1.32 +static const int32_t kBuddhistEraStart = -543; // 544 BC (Gregorian)
1.33 +
1.34 +static const int32_t kGregorianEpoch = 1970; // used as the default value of EXTENDED_YEAR
1.35 +
1.36 +BuddhistCalendar::BuddhistCalendar(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 +BuddhistCalendar::~BuddhistCalendar()
1.43 +{
1.44 +}
1.45 +
1.46 +BuddhistCalendar::BuddhistCalendar(const BuddhistCalendar& source)
1.47 +: GregorianCalendar(source)
1.48 +{
1.49 +}
1.50 +
1.51 +BuddhistCalendar& BuddhistCalendar::operator= ( const BuddhistCalendar& right)
1.52 +{
1.53 + GregorianCalendar::operator=(right);
1.54 + return *this;
1.55 +}
1.56 +
1.57 +Calendar* BuddhistCalendar::clone(void) const
1.58 +{
1.59 + return new BuddhistCalendar(*this);
1.60 +}
1.61 +
1.62 +const char *BuddhistCalendar::getType() const
1.63 +{
1.64 + return "buddhist";
1.65 +}
1.66 +
1.67 +int32_t BuddhistCalendar::handleGetExtendedYear()
1.68 +{
1.69 + // EXTENDED_YEAR in BuddhistCalendar is a Gregorian year.
1.70 + // The default value of EXTENDED_YEAR is 1970 (Buddhist 2513)
1.71 + int32_t year;
1.72 + if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR) {
1.73 + year = internalGet(UCAL_EXTENDED_YEAR, kGregorianEpoch);
1.74 + } else {
1.75 + // extended year is a gregorian year, where 1 = 1AD, 0 = 1BC, -1 = 2BC, etc
1.76 + year = internalGet(UCAL_YEAR, kGregorianEpoch - kBuddhistEraStart)
1.77 + + kBuddhistEraStart;
1.78 + }
1.79 + return year;
1.80 +}
1.81 +
1.82 +int32_t BuddhistCalendar::handleComputeMonthStart(int32_t eyear, int32_t month,
1.83 +
1.84 + UBool useMonth) const
1.85 +{
1.86 + return GregorianCalendar::handleComputeMonthStart(eyear, month, useMonth);
1.87 +}
1.88 +
1.89 +void BuddhistCalendar::handleComputeFields(int32_t julianDay, UErrorCode& status)
1.90 +{
1.91 + GregorianCalendar::handleComputeFields(julianDay, status);
1.92 + int32_t y = internalGet(UCAL_EXTENDED_YEAR) - kBuddhistEraStart;
1.93 + internalSet(UCAL_ERA, 0);
1.94 + internalSet(UCAL_YEAR, y);
1.95 +}
1.96 +
1.97 +int32_t BuddhistCalendar::handleGetLimit(UCalendarDateFields field, ELimitType limitType) const
1.98 +{
1.99 + if(field == UCAL_ERA) {
1.100 + return BE;
1.101 + } else {
1.102 + return GregorianCalendar::handleGetLimit(field,limitType);
1.103 + }
1.104 +}
1.105 +
1.106 +#if 0
1.107 +void BuddhistCalendar::timeToFields(UDate theTime, UBool quick, UErrorCode& status)
1.108 +{
1.109 + //Calendar::timeToFields(theTime, quick, status);
1.110 +
1.111 + int32_t era = internalGet(UCAL_ERA);
1.112 + int32_t year = internalGet(UCAL_YEAR);
1.113 +
1.114 + if(era == GregorianCalendar::BC) {
1.115 + year = 1-year;
1.116 + era = BuddhistCalendar::BE;
1.117 + } else if(era == GregorianCalendar::AD) {
1.118 + era = BuddhistCalendar::BE;
1.119 + } else {
1.120 + status = U_INTERNAL_PROGRAM_ERROR;
1.121 + }
1.122 +
1.123 + year = year - kBuddhistEraStart;
1.124 +
1.125 + internalSet(UCAL_ERA, era);
1.126 + internalSet(UCAL_YEAR, year);
1.127 +}
1.128 +#endif
1.129 +
1.130 +/**
1.131 + * The system maintains a static default century start date. This is initialized
1.132 + * the first time it is used. Once the system default century date and year
1.133 + * are set, they do not change.
1.134 + */
1.135 +static UDate gSystemDefaultCenturyStart = DBL_MIN;
1.136 +static int32_t gSystemDefaultCenturyStartYear = -1;
1.137 +static icu::UInitOnce gBCInitOnce;
1.138 +
1.139 +
1.140 +UBool BuddhistCalendar::haveDefaultCentury() const
1.141 +{
1.142 + return TRUE;
1.143 +}
1.144 +
1.145 +static void U_CALLCONV
1.146 +initializeSystemDefaultCentury()
1.147 +{
1.148 + // initialize systemDefaultCentury and systemDefaultCenturyYear based
1.149 + // on the current time. They'll be set to 80 years before
1.150 + // the current time.
1.151 + UErrorCode status = U_ZERO_ERROR;
1.152 + BuddhistCalendar calendar(Locale("@calendar=buddhist"),status);
1.153 + if (U_SUCCESS(status)) {
1.154 + calendar.setTime(Calendar::getNow(), status);
1.155 + calendar.add(UCAL_YEAR, -80, status);
1.156 + UDate newStart = calendar.getTime(status);
1.157 + int32_t newYear = calendar.get(UCAL_YEAR, status);
1.158 + gSystemDefaultCenturyStartYear = newYear;
1.159 + gSystemDefaultCenturyStart = newStart;
1.160 + }
1.161 + // We have no recourse upon failure unless we want to propagate the failure
1.162 + // out.
1.163 +}
1.164 +
1.165 +UDate BuddhistCalendar::defaultCenturyStart() const
1.166 +{
1.167 + // lazy-evaluate systemDefaultCenturyStart and systemDefaultCenturyStartYear
1.168 + umtx_initOnce(gBCInitOnce, &initializeSystemDefaultCentury);
1.169 + return gSystemDefaultCenturyStart;
1.170 +}
1.171 +
1.172 +int32_t BuddhistCalendar::defaultCenturyStartYear() const
1.173 +{
1.174 + // lazy-evaluate systemDefaultCenturyStartYear and systemDefaultCenturyStart
1.175 + umtx_initOnce(gBCInitOnce, &initializeSystemDefaultCentury);
1.176 + return gSystemDefaultCenturyStartYear;
1.177 +}
1.178 +
1.179 +
1.180 +U_NAMESPACE_END
1.181 +
1.182 +#endif
