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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 "coptccal.h"
#include "cecal.h"
#include <float.h>
U_NAMESPACE_BEGIN
UOBJECT_DEFINE_RTTI_IMPLEMENTATION(CopticCalendar)
static const int32_t COPTIC_JD_EPOCH_OFFSET = 1824665;
//-------------------------------------------------------------------------
// Constructors...
//-------------------------------------------------------------------------
CopticCalendar::CopticCalendar(const Locale& aLocale, UErrorCode& success)
: CECalendar(aLocale, success)
{
}
CopticCalendar::CopticCalendar (const CopticCalendar& other)
: CECalendar(other)
{
}
CopticCalendar::~CopticCalendar()
{
}
CopticCalendar*
CopticCalendar::clone() const
{
return new CopticCalendar(*this);
}
const char*
CopticCalendar::getType() const
{
return "coptic";
}
//-------------------------------------------------------------------------
// Calendar framework
//-------------------------------------------------------------------------
int32_t
CopticCalendar::handleGetExtendedYear()
{
int32_t eyear;
if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR) {
eyear = internalGet(UCAL_EXTENDED_YEAR, 1); // Default to year 1
} else {
// The year defaults to the epoch start, the era to CE
int32_t era = internalGet(UCAL_ERA, CE);
if (era == BCE) {
eyear = 1 - internalGet(UCAL_YEAR, 1); // Convert to extended year
} else {
eyear = internalGet(UCAL_YEAR, 1); // Default to year 1
}
}
return eyear;
}
void
CopticCalendar::handleComputeFields(int32_t julianDay, UErrorCode &/*status*/)
{
int32_t eyear, month, day, era, year;
jdToCE(julianDay, getJDEpochOffset(), eyear, month, day);
if (eyear <= 0) {
era = BCE;
year = 1 - eyear;
} else {
era = CE;
year = eyear;
}
internalSet(UCAL_EXTENDED_YEAR, eyear);
internalSet(UCAL_ERA, era);
internalSet(UCAL_YEAR, year);
internalSet(UCAL_MONTH, month);
internalSet(UCAL_ORDINAL_MONTH, month);
internalSet(UCAL_DATE, day);
internalSet(UCAL_DAY_OF_YEAR, (30 * month) + day);
}
constexpr uint32_t kCopticRelatedYearDiff = 284;
int32_t CopticCalendar::getRelatedYear(UErrorCode &status) const
{
int32_t year = get(UCAL_EXTENDED_YEAR, status);
if (U_FAILURE(status)) {
return 0;
}
return year + kCopticRelatedYearDiff;
}
void CopticCalendar::setRelatedYear(int32_t year)
{
// set extended year
set(UCAL_EXTENDED_YEAR, year - kCopticRelatedYearDiff);
}
/**
* 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;
CopticCalendar calendar(Locale("@calendar=coptic"), 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
CopticCalendar::defaultCenturyStart() const
{
// lazy-evaluate systemDefaultCenturyStart
umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury);
return gSystemDefaultCenturyStart;
}
int32_t
CopticCalendar::defaultCenturyStartYear() const
{
// lazy-evaluate systemDefaultCenturyStart
umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury);
return gSystemDefaultCenturyStartYear;
}
int32_t
CopticCalendar::getJDEpochOffset() const
{
return COPTIC_JD_EPOCH_OFFSET;
}
#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
CopticCalendar::copticToJD(int32_t year, int32_t month, int32_t day)
{
return CECalendar::ceToJD(year, month, day, COPTIC_JD_EPOCH_OFFSET);
}
#endif
U_NAMESPACE_END
#endif /* #if !UCONFIG_NO_FORMATTING */
//eof
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