| /* |
| ******************************************************************************* |
| * Copyright (C) 2003 - 2009, International Business Machines Corporation and * |
| * others. All Rights Reserved. * |
| ******************************************************************************* |
| */ |
| |
| #include "unicode/utypes.h" |
| |
| #if !UCONFIG_NO_FORMATTING |
| |
| #include "umutex.h" |
| #include "ethpccal.h" |
| #include "cecal.h" |
| #include <float.h> |
| |
| U_NAMESPACE_BEGIN |
| |
| UOBJECT_DEFINE_RTTI_IMPLEMENTATION(EthiopicCalendar) |
| |
| //static const int32_t JD_EPOCH_OFFSET_AMETE_ALEM = -285019; |
| static const int32_t JD_EPOCH_OFFSET_AMETE_MIHRET = 1723856; |
| static const int32_t AMETE_MIHRET_DELTA = 5500; // 5501 - 1 (Amete Alem 5501 = Amete Mihret 1) |
| |
| //------------------------------------------------------------------------- |
| // Constructors... |
| //------------------------------------------------------------------------- |
| |
| EthiopicCalendar::EthiopicCalendar(const Locale& aLocale, |
| UErrorCode& success, |
| EEraType type /*= AMETE_MIHRET_ERA*/) |
| : CECalendar(aLocale, success), |
| eraType(type) |
| { |
| } |
| |
| EthiopicCalendar::EthiopicCalendar(const EthiopicCalendar& other) |
| : CECalendar(other), |
| eraType(other.eraType) |
| { |
| } |
| |
| EthiopicCalendar::~EthiopicCalendar() |
| { |
| } |
| |
| Calendar* |
| EthiopicCalendar::clone() const |
| { |
| return new EthiopicCalendar(*this); |
| } |
| |
| const char * |
| EthiopicCalendar::getType() const |
| { |
| if (isAmeteAlemEra()) { |
| return "ethiopic-amete-alem"; |
| } |
| return "ethiopic"; |
| } |
| |
| void |
| EthiopicCalendar::setAmeteAlemEra(UBool onOff) |
| { |
| eraType = onOff ? AMETE_ALEM_ERA : AMETE_MIHRET_ERA; |
| } |
| |
| UBool |
| EthiopicCalendar::isAmeteAlemEra() const |
| { |
| return (eraType == AMETE_ALEM_ERA); |
| } |
| |
| //------------------------------------------------------------------------- |
| // Calendar framework |
| //------------------------------------------------------------------------- |
| |
| int32_t |
| EthiopicCalendar::handleGetExtendedYear() |
| { |
| // Ethiopic calendar uses EXTENDED_YEAR aligned to |
| // Amelete Hihret year always. |
| int32_t eyear; |
| if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR) { |
| eyear = internalGet(UCAL_EXTENDED_YEAR, 1); // Default to year 1 |
| } else if (isAmeteAlemEra()) { |
| eyear = internalGet(UCAL_YEAR, 1 + AMETE_MIHRET_DELTA) |
| - AMETE_MIHRET_DELTA; // Default to year 1 of Amelete Mihret |
| } else { |
| // The year defaults to the epoch start, the era to AMETE_MIHRET |
| int32_t era = internalGet(UCAL_ERA, AMETE_MIHRET); |
| if (era == AMETE_MIHRET) { |
| eyear = internalGet(UCAL_YEAR, 1); // Default to year 1 |
| } else { |
| eyear = internalGet(UCAL_YEAR, 1) - AMETE_MIHRET_DELTA; |
| } |
| } |
| return eyear; |
| } |
| |
| void |
| EthiopicCalendar::handleComputeFields(int32_t julianDay, UErrorCode &/*status*/) |
| { |
| int32_t eyear, month, day, era, year; |
| jdToCE(julianDay, getJDEpochOffset(), eyear, month, day); |
| |
| if (isAmeteAlemEra()) { |
| era = AMETE_ALEM; |
| year = eyear + AMETE_MIHRET_DELTA; |
| } else { |
| if (eyear > 0) { |
| era = AMETE_MIHRET; |
| year = eyear; |
| } else { |
| era = AMETE_ALEM; |
| year = eyear + AMETE_MIHRET_DELTA; |
| } |
| } |
| |
| internalSet(UCAL_EXTENDED_YEAR, eyear); |
| internalSet(UCAL_ERA, era); |
| internalSet(UCAL_YEAR, year); |
| internalSet(UCAL_MONTH, month); |
| internalSet(UCAL_DATE, day); |
| internalSet(UCAL_DAY_OF_YEAR, (30 * month) + day); |
| } |
| |
| int32_t |
| EthiopicCalendar::handleGetLimit(UCalendarDateFields field, ELimitType limitType) const |
| { |
| if (isAmeteAlemEra() && field == UCAL_ERA) { |
| return 0; // Only one era in this mode, era is always 0 |
| } |
| return CECalendar::handleGetLimit(field, limitType); |
| } |
| |
| const UDate EthiopicCalendar::fgSystemDefaultCentury = DBL_MIN; |
| const int32_t EthiopicCalendar::fgSystemDefaultCenturyYear = -1; |
| |
| UDate EthiopicCalendar::fgSystemDefaultCenturyStart = DBL_MIN; |
| int32_t EthiopicCalendar::fgSystemDefaultCenturyStartYear = -1; |
| |
| UDate |
| EthiopicCalendar::defaultCenturyStart() const |
| { |
| initializeSystemDefaultCentury(); |
| return fgSystemDefaultCenturyStart; |
| } |
| |
| int32_t |
| EthiopicCalendar::defaultCenturyStartYear() const |
| { |
| initializeSystemDefaultCentury(); |
| if (isAmeteAlemEra()) { |
| return fgSystemDefaultCenturyStartYear + AMETE_MIHRET_DELTA; |
| } |
| return fgSystemDefaultCenturyStartYear; |
| } |
| |
| void |
| EthiopicCalendar::initializeSystemDefaultCentury() |
| { |
| // lazy-evaluate systemDefaultCenturyStart |
| UBool needsUpdate; |
| UMTX_CHECK(NULL, (fgSystemDefaultCenturyStart == fgSystemDefaultCentury), needsUpdate); |
| |
| if (!needsUpdate) { |
| return; |
| } |
| |
| UErrorCode status = U_ZERO_ERROR; |
| |
| EthiopicCalendar calendar(Locale("@calendar=ethiopic"), status); |
| if (U_SUCCESS(status)) { |
| calendar.setTime(Calendar::getNow(), status); |
| calendar.add(UCAL_YEAR, -80, status); |
| UDate newStart = calendar.getTime(status); |
| int32_t newYear = calendar.get(UCAL_YEAR, status); |
| { |
| umtx_lock(NULL); |
| fgSystemDefaultCenturyStartYear = newYear; |
| fgSystemDefaultCenturyStart = newStart; |
| umtx_unlock(NULL); |
| } |
| } |
| // We have no recourse upon failure unless we want to propagate the failure |
| // out. |
| } |
| |
| int32_t |
| EthiopicCalendar::getJDEpochOffset() const |
| { |
| return JD_EPOCH_OFFSET_AMETE_MIHRET; |
| } |
| |
| |
| #if 0 |
| // We do not want to introduce this API in ICU4C. |
| // It was accidentally introduced in ICU4J as a public API. |
| |
| //------------------------------------------------------------------------- |
| // Calendar system Conversion methods... |
| //------------------------------------------------------------------------- |
| |
| int32_t |
| EthiopicCalendar::ethiopicToJD(int32_t year, int32_t month, int32_t date) |
| { |
| return ceToJD(year, month, date, JD_EPOCH_OFFSET_AMETE_MIHRET); |
| } |
| #endif |
| |
| U_NAMESPACE_END |
| |
| #endif |