1 // Copyright (C) 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
4 *******************************************************************************
5 * Copyright (C) 2003 - 2013, International Business Machines Corporation and
6 * others. All Rights Reserved.
7 *******************************************************************************
10 #include "unicode/utypes.h"
12 #if !UCONFIG_NO_FORMATTING
21 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(EthiopicCalendar)
23 //static const int32_t JD_EPOCH_OFFSET_AMETE_ALEM = -285019;
24 static const int32_t JD_EPOCH_OFFSET_AMETE_MIHRET = 1723856;
25 static const int32_t AMETE_MIHRET_DELTA = 5500; // 5501 - 1 (Amete Alem 5501 = Amete Mihret 1)
27 //-------------------------------------------------------------------------
29 //-------------------------------------------------------------------------
31 EthiopicCalendar::EthiopicCalendar(const Locale& aLocale,
33 EEraType type /*= AMETE_MIHRET_ERA*/)
34 : CECalendar(aLocale, success),
39 EthiopicCalendar::EthiopicCalendar(const EthiopicCalendar& other)
41 eraType(other.eraType)
45 EthiopicCalendar::~EthiopicCalendar()
50 EthiopicCalendar::clone() const
52 return new EthiopicCalendar(*this);
56 EthiopicCalendar::getType() const
58 if (isAmeteAlemEra()) {
59 return "ethiopic-amete-alem";
65 EthiopicCalendar::setAmeteAlemEra(UBool onOff)
67 eraType = onOff ? AMETE_ALEM_ERA : AMETE_MIHRET_ERA;
71 EthiopicCalendar::isAmeteAlemEra() const
73 return (eraType == AMETE_ALEM_ERA);
76 //-------------------------------------------------------------------------
78 //-------------------------------------------------------------------------
81 EthiopicCalendar::handleGetExtendedYear()
83 // Ethiopic calendar uses EXTENDED_YEAR aligned to
84 // Amelete Hihret year always.
86 if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR) {
87 eyear = internalGet(UCAL_EXTENDED_YEAR, 1); // Default to year 1
88 } else if (isAmeteAlemEra()) {
89 eyear = internalGet(UCAL_YEAR, 1 + AMETE_MIHRET_DELTA)
90 - AMETE_MIHRET_DELTA; // Default to year 1 of Amelete Mihret
92 // The year defaults to the epoch start, the era to AMETE_MIHRET
93 int32_t era = internalGet(UCAL_ERA, AMETE_MIHRET);
94 if (era == AMETE_MIHRET) {
95 eyear = internalGet(UCAL_YEAR, 1); // Default to year 1
97 eyear = internalGet(UCAL_YEAR, 1) - AMETE_MIHRET_DELTA;
104 EthiopicCalendar::handleComputeFields(int32_t julianDay, UErrorCode &/*status*/)
106 int32_t eyear, month, day, era, year;
107 jdToCE(julianDay, getJDEpochOffset(), eyear, month, day);
109 if (isAmeteAlemEra()) {
111 year = eyear + AMETE_MIHRET_DELTA;
118 year = eyear + AMETE_MIHRET_DELTA;
122 internalSet(UCAL_EXTENDED_YEAR, eyear);
123 internalSet(UCAL_ERA, era);
124 internalSet(UCAL_YEAR, year);
125 internalSet(UCAL_MONTH, month);
126 internalSet(UCAL_DATE, day);
127 internalSet(UCAL_DAY_OF_YEAR, (30 * month) + day);
131 EthiopicCalendar::handleGetLimit(UCalendarDateFields field, ELimitType limitType) const
133 if (isAmeteAlemEra() && field == UCAL_ERA) {
134 return 0; // Only one era in this mode, era is always 0
136 return CECalendar::handleGetLimit(field, limitType);
140 * The system maintains a static default century start date and Year. They are
141 * initialized the first time they are used. Once the system default century date
142 * and year are set, they do not change.
144 static UDate gSystemDefaultCenturyStart = DBL_MIN;
145 static int32_t gSystemDefaultCenturyStartYear = -1;
146 static icu::UInitOnce gSystemDefaultCenturyInit = U_INITONCE_INITIALIZER;
148 static void U_CALLCONV initializeSystemDefaultCentury()
150 UErrorCode status = U_ZERO_ERROR;
151 EthiopicCalendar calendar(Locale("@calendar=ethiopic"), status);
152 if (U_SUCCESS(status)) {
153 calendar.setTime(Calendar::getNow(), status);
154 calendar.add(UCAL_YEAR, -80, status);
156 gSystemDefaultCenturyStart = calendar.getTime(status);
157 gSystemDefaultCenturyStartYear = calendar.get(UCAL_YEAR, status);
159 // We have no recourse upon failure unless we want to propagate the failure
164 EthiopicCalendar::defaultCenturyStart() const
166 // lazy-evaluate systemDefaultCenturyStart
167 umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury);
168 return gSystemDefaultCenturyStart;
172 EthiopicCalendar::defaultCenturyStartYear() const
174 // lazy-evaluate systemDefaultCenturyStartYear
175 umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury);
176 if (isAmeteAlemEra()) {
177 return gSystemDefaultCenturyStartYear + AMETE_MIHRET_DELTA;
179 return gSystemDefaultCenturyStartYear;
184 EthiopicCalendar::getJDEpochOffset() const
186 return JD_EPOCH_OFFSET_AMETE_MIHRET;
191 // We do not want to introduce this API in ICU4C.
192 // It was accidentally introduced in ICU4J as a public API.
194 //-------------------------------------------------------------------------
195 // Calendar system Conversion methods...
196 //-------------------------------------------------------------------------
199 EthiopicCalendar::ethiopicToJD(int32_t year, int32_t month, int32_t date)
201 return ceToJD(year, month, date, JD_EPOCH_OFFSET_AMETE_MIHRET);