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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
* Copyright (C) 2003 - 2013, 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)
UOBJECT_DEFINE_RTTI_IMPLEMENTATION(EthiopicAmeteAlemCalendar)
//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)
: CECalendar(aLocale, success)
{
}
EthiopicCalendar::~EthiopicCalendar()
{
}
EthiopicCalendar*
EthiopicCalendar::clone() const
{
return new EthiopicCalendar(*this);
}
const char *
EthiopicCalendar::getType() const
{
return "ethiopic";
}
//-------------------------------------------------------------------------
// Calendar framework
//-------------------------------------------------------------------------
int32_t
EthiopicCalendar::handleGetExtendedYear()
{
// Ethiopic calendar uses EXTENDED_YEAR aligned to
// Amelete Hihret year always.
if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR) {
return internalGet(UCAL_EXTENDED_YEAR, 1); // Default to year 1
}
// The year defaults to the epoch start, the era to AMETE_MIHRET
if (internalGet(UCAL_ERA, AMETE_MIHRET) == AMETE_MIHRET) {
return internalGet(UCAL_YEAR, 1); // Default to year 1
}
return internalGet(UCAL_YEAR, 1) - AMETE_MIHRET_DELTA;
}
void
EthiopicCalendar::handleComputeFields(int32_t julianDay, UErrorCode &/*status*/)
{
int32_t eyear, month, day;
jdToCE(julianDay, getJDEpochOffset(), eyear, month, day);
internalSet(UCAL_EXTENDED_YEAR, eyear);
internalSet(UCAL_ERA, (eyear > 0) ? AMETE_MIHRET : AMETE_ALEM);
internalSet(UCAL_YEAR, (eyear > 0) ? eyear : (eyear + AMETE_MIHRET_DELTA));
internalSet(UCAL_MONTH, month);
internalSet(UCAL_ORDINAL_MONTH, month);
internalSet(UCAL_DATE, day);
internalSet(UCAL_DAY_OF_YEAR, (30 * month) + day);
}
constexpr uint32_t kEthiopicRelatedYearDiff = 8;
int32_t EthiopicCalendar::getRelatedYear(UErrorCode &status) const
{
int32_t year = get(UCAL_EXTENDED_YEAR, status);
if (U_FAILURE(status)) {
return 0;
}
return year + kEthiopicRelatedYearDiff;
}
void EthiopicCalendar::setRelatedYear(int32_t year)
{
// set extended year
set(UCAL_EXTENDED_YEAR, year - kEthiopicRelatedYearDiff);
}
/**
* The system maintains a static default century start date and Year. They are
* initialized the first time they are used. Once the system default century date
* and year are set, they do not change.
*/
static UDate gSystemDefaultCenturyStart = DBL_MIN;
static int32_t gSystemDefaultCenturyStartYear = -1;
static icu::UInitOnce gSystemDefaultCenturyInit {};
static void U_CALLCONV initializeSystemDefaultCentury()
{
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);
gSystemDefaultCenturyStart = calendar.getTime(status);
gSystemDefaultCenturyStartYear = calendar.get(UCAL_YEAR, status);
}
// We have no recourse upon failure unless we want to propagate the failure
// out.
}
UDate
EthiopicCalendar::defaultCenturyStart() const
{
// lazy-evaluate systemDefaultCenturyStart
umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury);
return gSystemDefaultCenturyStart;
}
int32_t
EthiopicCalendar::defaultCenturyStartYear() const
{
// lazy-evaluate systemDefaultCenturyStartYear
umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury);
return gSystemDefaultCenturyStartYear;
}
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
//-------------------------------------------------------------------------
// Constructors...
//-------------------------------------------------------------------------
EthiopicAmeteAlemCalendar::EthiopicAmeteAlemCalendar(const Locale& aLocale,
UErrorCode& success)
: EthiopicCalendar(aLocale, success)
{
}
EthiopicAmeteAlemCalendar::~EthiopicAmeteAlemCalendar()
{
}
EthiopicAmeteAlemCalendar*
EthiopicAmeteAlemCalendar::clone() const
{
return new EthiopicAmeteAlemCalendar(*this);
}
//-------------------------------------------------------------------------
// Calendar framework
//-------------------------------------------------------------------------
const char *
EthiopicAmeteAlemCalendar::getType() const
{
return "ethiopic-amete-alem";
}
int32_t
EthiopicAmeteAlemCalendar::handleGetExtendedYear()
{
// Ethiopic calendar uses EXTENDED_YEAR aligned to
// Amelete Hihret year always.
if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR) {
return internalGet(UCAL_EXTENDED_YEAR, 1); // Default to year 1
}
return internalGet(UCAL_YEAR, 1 + AMETE_MIHRET_DELTA)
- AMETE_MIHRET_DELTA; // Default to year 1 of Amelete Mihret
}
void
EthiopicAmeteAlemCalendar::handleComputeFields(int32_t julianDay, UErrorCode &/*status*/)
{
int32_t eyear, month, day;
jdToCE(julianDay, getJDEpochOffset(), eyear, month, day);
internalSet(UCAL_EXTENDED_YEAR, eyear);
internalSet(UCAL_ERA, AMETE_ALEM);
internalSet(UCAL_YEAR, eyear + AMETE_MIHRET_DELTA);
internalSet(UCAL_MONTH, month);
internalSet(UCAL_ORDINAL_MONTH, month);
internalSet(UCAL_DATE, day);
internalSet(UCAL_DAY_OF_YEAR, (30 * month) + day);
}
int32_t
EthiopicAmeteAlemCalendar::handleGetLimit(UCalendarDateFields field, ELimitType limitType) const
{
if (field == UCAL_ERA) {
return 0; // Only one era in this mode, era is always 0
}
return EthiopicCalendar::handleGetLimit(field, limitType);
}
constexpr uint32_t kEthiopicAmeteAlemRelatedYearDiff = -5492;
int32_t EthiopicAmeteAlemCalendar::getRelatedYear(UErrorCode &status) const
{
int32_t year = get(UCAL_EXTENDED_YEAR, status);
if (U_FAILURE(status)) {
return 0;
}
return year + kEthiopicAmeteAlemRelatedYearDiff;
}
void EthiopicAmeteAlemCalendar::setRelatedYear(int32_t year)
{
// set extended year
set(UCAL_EXTENDED_YEAR, year - kEthiopicAmeteAlemRelatedYearDiff);
}
int32_t
EthiopicAmeteAlemCalendar::defaultCenturyStartYear() const
{
return EthiopicCalendar::defaultCenturyStartYear() + AMETE_MIHRET_DELTA;
}
U_NAMESPACE_END
#endif
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