1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/intl/icu/source/i18n/ethpccal.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,205 @@
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 +
1.11 +#include "unicode/utypes.h"
1.12 +
1.13 +#if !UCONFIG_NO_FORMATTING
1.14 +
1.15 +#include "umutex.h"
1.16 +#include "ethpccal.h"
1.17 +#include "cecal.h"
1.18 +#include <float.h>
1.19 +
1.20 +U_NAMESPACE_BEGIN
1.21 +
1.22 +UOBJECT_DEFINE_RTTI_IMPLEMENTATION(EthiopicCalendar)
1.23 +
1.24 +//static const int32_t JD_EPOCH_OFFSET_AMETE_ALEM = -285019;
1.25 +static const int32_t JD_EPOCH_OFFSET_AMETE_MIHRET = 1723856;
1.26 +static const int32_t AMETE_MIHRET_DELTA = 5500; // 5501 - 1 (Amete Alem 5501 = Amete Mihret 1)
1.27 +
1.28 +//-------------------------------------------------------------------------
1.29 +// Constructors...
1.30 +//-------------------------------------------------------------------------
1.31 +
1.32 +EthiopicCalendar::EthiopicCalendar(const Locale& aLocale,
1.33 + UErrorCode& success,
1.34 + EEraType type /*= AMETE_MIHRET_ERA*/)
1.35 +: CECalendar(aLocale, success),
1.36 + eraType(type)
1.37 +{
1.38 +}
1.39 +
1.40 +EthiopicCalendar::EthiopicCalendar(const EthiopicCalendar& other)
1.41 +: CECalendar(other),
1.42 + eraType(other.eraType)
1.43 +{
1.44 +}
1.45 +
1.46 +EthiopicCalendar::~EthiopicCalendar()
1.47 +{
1.48 +}
1.49 +
1.50 +Calendar*
1.51 +EthiopicCalendar::clone() const
1.52 +{
1.53 + return new EthiopicCalendar(*this);
1.54 +}
1.55 +
1.56 +const char *
1.57 +EthiopicCalendar::getType() const
1.58 +{
1.59 + if (isAmeteAlemEra()) {
1.60 + return "ethiopic-amete-alem";
1.61 + }
1.62 + return "ethiopic";
1.63 +}
1.64 +
1.65 +void
1.66 +EthiopicCalendar::setAmeteAlemEra(UBool onOff)
1.67 +{
1.68 + eraType = onOff ? AMETE_ALEM_ERA : AMETE_MIHRET_ERA;
1.69 +}
1.70 +
1.71 +UBool
1.72 +EthiopicCalendar::isAmeteAlemEra() const
1.73 +{
1.74 + return (eraType == AMETE_ALEM_ERA);
1.75 +}
1.76 +
1.77 +//-------------------------------------------------------------------------
1.78 +// Calendar framework
1.79 +//-------------------------------------------------------------------------
1.80 +
1.81 +int32_t
1.82 +EthiopicCalendar::handleGetExtendedYear()
1.83 +{
1.84 + // Ethiopic calendar uses EXTENDED_YEAR aligned to
1.85 + // Amelete Hihret year always.
1.86 + int32_t eyear;
1.87 + if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR) {
1.88 + eyear = internalGet(UCAL_EXTENDED_YEAR, 1); // Default to year 1
1.89 + } else if (isAmeteAlemEra()) {
1.90 + eyear = internalGet(UCAL_YEAR, 1 + AMETE_MIHRET_DELTA)
1.91 + - AMETE_MIHRET_DELTA; // Default to year 1 of Amelete Mihret
1.92 + } else {
1.93 + // The year defaults to the epoch start, the era to AMETE_MIHRET
1.94 + int32_t era = internalGet(UCAL_ERA, AMETE_MIHRET);
1.95 + if (era == AMETE_MIHRET) {
1.96 + eyear = internalGet(UCAL_YEAR, 1); // Default to year 1
1.97 + } else {
1.98 + eyear = internalGet(UCAL_YEAR, 1) - AMETE_MIHRET_DELTA;
1.99 + }
1.100 + }
1.101 + return eyear;
1.102 +}
1.103 +
1.104 +void
1.105 +EthiopicCalendar::handleComputeFields(int32_t julianDay, UErrorCode &/*status*/)
1.106 +{
1.107 + int32_t eyear, month, day, era, year;
1.108 + jdToCE(julianDay, getJDEpochOffset(), eyear, month, day);
1.109 +
1.110 + if (isAmeteAlemEra()) {
1.111 + era = AMETE_ALEM;
1.112 + year = eyear + AMETE_MIHRET_DELTA;
1.113 + } else {
1.114 + if (eyear > 0) {
1.115 + era = AMETE_MIHRET;
1.116 + year = eyear;
1.117 + } else {
1.118 + era = AMETE_ALEM;
1.119 + year = eyear + AMETE_MIHRET_DELTA;
1.120 + }
1.121 + }
1.122 +
1.123 + internalSet(UCAL_EXTENDED_YEAR, eyear);
1.124 + internalSet(UCAL_ERA, era);
1.125 + internalSet(UCAL_YEAR, year);
1.126 + internalSet(UCAL_MONTH, month);
1.127 + internalSet(UCAL_DATE, day);
1.128 + internalSet(UCAL_DAY_OF_YEAR, (30 * month) + day);
1.129 +}
1.130 +
1.131 +int32_t
1.132 +EthiopicCalendar::handleGetLimit(UCalendarDateFields field, ELimitType limitType) const
1.133 +{
1.134 + if (isAmeteAlemEra() && field == UCAL_ERA) {
1.135 + return 0; // Only one era in this mode, era is always 0
1.136 + }
1.137 + return CECalendar::handleGetLimit(field, limitType);
1.138 +}
1.139 +
1.140 +/**
1.141 + * The system maintains a static default century start date and Year. They are
1.142 + * initialized the first time they are used. Once the system default century date
1.143 + * and year are set, they do not change.
1.144 + */
1.145 +static UDate gSystemDefaultCenturyStart = DBL_MIN;
1.146 +static int32_t gSystemDefaultCenturyStartYear = -1;
1.147 +static icu::UInitOnce gSystemDefaultCenturyInit = U_INITONCE_INITIALIZER;
1.148 +
1.149 +static void U_CALLCONV initializeSystemDefaultCentury()
1.150 +{
1.151 + UErrorCode status = U_ZERO_ERROR;
1.152 + EthiopicCalendar calendar(Locale("@calendar=ethiopic"), status);
1.153 + if (U_SUCCESS(status)) {
1.154 + calendar.setTime(Calendar::getNow(), status);
1.155 + calendar.add(UCAL_YEAR, -80, status);
1.156 +
1.157 + gSystemDefaultCenturyStart = calendar.getTime(status);
1.158 + gSystemDefaultCenturyStartYear = calendar.get(UCAL_YEAR, status);
1.159 + }
1.160 + // We have no recourse upon failure unless we want to propagate the failure
1.161 + // out.
1.162 +}
1.163 +
1.164 +UDate
1.165 +EthiopicCalendar::defaultCenturyStart() const
1.166 +{
1.167 + // lazy-evaluate systemDefaultCenturyStart
1.168 + umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury);
1.169 + return gSystemDefaultCenturyStart;
1.170 +}
1.171 +
1.172 +int32_t
1.173 +EthiopicCalendar::defaultCenturyStartYear() const
1.174 +{
1.175 + // lazy-evaluate systemDefaultCenturyStartYear
1.176 + umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury);
1.177 + if (isAmeteAlemEra()) {
1.178 + return gSystemDefaultCenturyStartYear + AMETE_MIHRET_DELTA;
1.179 + }
1.180 + return gSystemDefaultCenturyStartYear;
1.181 +}
1.182 +
1.183 +
1.184 +int32_t
1.185 +EthiopicCalendar::getJDEpochOffset() const
1.186 +{
1.187 + return JD_EPOCH_OFFSET_AMETE_MIHRET;
1.188 +}
1.189 +
1.190 +
1.191 +#if 0
1.192 +// We do not want to introduce this API in ICU4C.
1.193 +// It was accidentally introduced in ICU4J as a public API.
1.194 +
1.195 +//-------------------------------------------------------------------------
1.196 +// Calendar system Conversion methods...
1.197 +//-------------------------------------------------------------------------
1.198 +
1.199 +int32_t
1.200 +EthiopicCalendar::ethiopicToJD(int32_t year, int32_t month, int32_t date)
1.201 +{
1.202 + return ceToJD(year, month, date, JD_EPOCH_OFFSET_AMETE_MIHRET);
1.203 +}
1.204 +#endif
1.205 +
1.206 +U_NAMESPACE_END
1.207 +
1.208 +#endif
