1bd7f62d13PR-URL: https://github.com/nodejs/node/pull/60523 Reviewed-By: Michaël Zasso <targos@protonmail.com> Reviewed-By: Steven R Loomis <srl295@gmail.com>
174 lines
4.8 KiB
C++
174 lines
4.8 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) 2003 - 2013, 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 "unicode/utypes.h"
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#if !UCONFIG_NO_FORMATTING
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#include "gregoimp.h"
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#include "umutex.h"
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#include "ethpccal.h"
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#include "cecal.h"
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#include <float.h>
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U_NAMESPACE_BEGIN
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UOBJECT_DEFINE_RTTI_IMPLEMENTATION(EthiopicCalendar)
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UOBJECT_DEFINE_RTTI_IMPLEMENTATION(EthiopicAmeteAlemCalendar)
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static const int32_t JD_EPOCH_OFFSET_AMETE_ALEM = -285019;
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static const int32_t JD_EPOCH_OFFSET_AMETE_MIHRET = 1723856;
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static const int32_t AMETE_MIHRET_DELTA = 5500; // 5501 - 1 (Amete Alem 5501 = Amete Mihret 1)
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//-------------------------------------------------------------------------
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// Constructors...
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//-------------------------------------------------------------------------
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EthiopicCalendar::EthiopicCalendar(const Locale& aLocale,
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UErrorCode& success)
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: CECalendar(aLocale, success)
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{
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}
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EthiopicCalendar::~EthiopicCalendar()
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{
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}
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EthiopicCalendar*
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EthiopicCalendar::clone() const
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{
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return new EthiopicCalendar(*this);
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}
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const char *
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EthiopicCalendar::getType() const
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{
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return "ethiopic";
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}
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//-------------------------------------------------------------------------
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// Calendar framework
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//-------------------------------------------------------------------------
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int32_t
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EthiopicCalendar::handleGetExtendedYear(UErrorCode& status)
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{
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if (U_FAILURE(status)) {
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return 0;
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}
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// Ethiopic calendar uses EXTENDED_YEAR aligned to
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// Amelete Hihret year always.
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if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR) {
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return internalGet(UCAL_EXTENDED_YEAR, 1); // Default to year 1
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}
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// The year defaults to the epoch start, the era to AMETE_MIHRET
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if (internalGet(UCAL_ERA, AMETE_MIHRET) == AMETE_MIHRET) {
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return internalGet(UCAL_YEAR, 1); // Default to year 1
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}
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int32_t year = internalGet(UCAL_YEAR, 1);
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if (uprv_add32_overflow(year, -AMETE_MIHRET_DELTA, &year)) {
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status = U_ILLEGAL_ARGUMENT_ERROR;
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return 0;
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}
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return year;
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}
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IMPL_SYSTEM_DEFAULT_CENTURY(EthiopicCalendar, "@calendar=ethiopic")
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int32_t
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EthiopicCalendar::getJDEpochOffset() const
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{
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return JD_EPOCH_OFFSET_AMETE_MIHRET;
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}
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int32_t EthiopicCalendar::extendedYearToEra(int32_t extendedYear) const {
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return extendedYear <= 0 ? AMETE_ALEM : AMETE_MIHRET;
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}
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int32_t EthiopicCalendar::extendedYearToYear(int32_t extendedYear) const {
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return extendedYear <= 0 ? extendedYear + AMETE_MIHRET_DELTA : extendedYear;
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}
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int32_t EthiopicCalendar::getRelatedYearDifference() const {
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constexpr int32_t kEthiopicCalendarRelatedYearDifference = 8;
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return kEthiopicCalendarRelatedYearDifference;
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}
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//-------------------------------------------------------------------------
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// Constructors...
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//-------------------------------------------------------------------------
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EthiopicAmeteAlemCalendar::EthiopicAmeteAlemCalendar(const Locale& aLocale,
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UErrorCode& success)
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: EthiopicCalendar(aLocale, success)
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{
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}
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EthiopicAmeteAlemCalendar::~EthiopicAmeteAlemCalendar()
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{
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}
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EthiopicAmeteAlemCalendar*
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EthiopicAmeteAlemCalendar::clone() const
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{
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return new EthiopicAmeteAlemCalendar(*this);
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}
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//-------------------------------------------------------------------------
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// Calendar framework
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//-------------------------------------------------------------------------
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const char *
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EthiopicAmeteAlemCalendar::getType() const
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{
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return "ethiopic-amete-alem";
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}
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int32_t
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EthiopicAmeteAlemCalendar::handleGetExtendedYear(UErrorCode& status)
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{
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if (U_FAILURE(status)) {
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return 0;
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}
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// Ethiopic calendar uses EXTENDED_YEAR aligned to
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// Amelete Hihret year always.
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if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR) {
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return internalGet(UCAL_EXTENDED_YEAR, 1); // Default to year 1
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}
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// Default to year 1
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return internalGet(UCAL_YEAR, 1);
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}
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int32_t
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EthiopicAmeteAlemCalendar::getJDEpochOffset() const
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{
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return JD_EPOCH_OFFSET_AMETE_ALEM;
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}
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int32_t EthiopicAmeteAlemCalendar::extendedYearToEra(int32_t /* extendedYear */) const {
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return AMETE_ALEM;
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}
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int32_t EthiopicAmeteAlemCalendar::extendedYearToYear(int32_t extendedYear) const {
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return extendedYear;
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}
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int32_t
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EthiopicAmeteAlemCalendar::handleGetLimit(UCalendarDateFields field, ELimitType limitType) const
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{
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if (field == UCAL_ERA) {
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return 0; // Only one era in this mode, era is always 0
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}
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return EthiopicCalendar::handleGetLimit(field, limitType);
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}
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U_NAMESPACE_END
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#endif
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