165 lines
4.4 KiB
C++
165 lines
4.4 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 "umutex.h"
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#include "coptccal.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(CopticCalendar)
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static const int32_t COPTIC_JD_EPOCH_OFFSET = 1824665;
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//-------------------------------------------------------------------------
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// Constructors...
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//-------------------------------------------------------------------------
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CopticCalendar::CopticCalendar(const Locale& aLocale, UErrorCode& success)
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: CECalendar(aLocale, success)
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{
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}
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CopticCalendar::CopticCalendar (const CopticCalendar& other)
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: CECalendar(other)
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{
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}
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CopticCalendar::~CopticCalendar()
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{
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}
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CopticCalendar*
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CopticCalendar::clone() const
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{
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return new CopticCalendar(*this);
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}
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const char*
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CopticCalendar::getType() const
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{
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return "coptic";
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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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CopticCalendar::handleGetExtendedYear()
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{
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int32_t eyear;
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if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR) {
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eyear = internalGet(UCAL_EXTENDED_YEAR, 1); // Default to year 1
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} else {
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// The year defaults to the epoch start, the era to CE
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int32_t era = internalGet(UCAL_ERA, CE);
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if (era == BCE) {
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eyear = 1 - internalGet(UCAL_YEAR, 1); // Convert to extended year
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} else {
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eyear = internalGet(UCAL_YEAR, 1); // Default to year 1
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}
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}
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return eyear;
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}
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void
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CopticCalendar::handleComputeFields(int32_t julianDay, UErrorCode &/*status*/)
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{
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int32_t eyear, month, day, era, year;
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jdToCE(julianDay, getJDEpochOffset(), eyear, month, day);
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if (eyear <= 0) {
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era = BCE;
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year = 1 - eyear;
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} else {
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era = CE;
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year = eyear;
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}
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internalSet(UCAL_EXTENDED_YEAR, eyear);
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internalSet(UCAL_ERA, era);
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internalSet(UCAL_YEAR, year);
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internalSet(UCAL_MONTH, month);
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internalSet(UCAL_DATE, day);
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internalSet(UCAL_DAY_OF_YEAR, (30 * month) + day);
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}
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/**
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* The system maintains a static default century start date and Year. They are
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* initialized the first time they are used. Once the system default century date
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* and year are set, they do not change.
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*/
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static UDate gSystemDefaultCenturyStart = DBL_MIN;
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static int32_t gSystemDefaultCenturyStartYear = -1;
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static icu::UInitOnce gSystemDefaultCenturyInit = U_INITONCE_INITIALIZER;
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static void U_CALLCONV initializeSystemDefaultCentury() {
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UErrorCode status = U_ZERO_ERROR;
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CopticCalendar calendar(Locale("@calendar=coptic"), status);
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if (U_SUCCESS(status)) {
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calendar.setTime(Calendar::getNow(), status);
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calendar.add(UCAL_YEAR, -80, status);
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gSystemDefaultCenturyStart = calendar.getTime(status);
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gSystemDefaultCenturyStartYear = calendar.get(UCAL_YEAR, status);
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}
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// We have no recourse upon failure unless we want to propagate the failure
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// out.
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}
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UDate
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CopticCalendar::defaultCenturyStart() const
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{
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// lazy-evaluate systemDefaultCenturyStart
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umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury);
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return gSystemDefaultCenturyStart;
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}
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int32_t
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CopticCalendar::defaultCenturyStartYear() const
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{
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// lazy-evaluate systemDefaultCenturyStart
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umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury);
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return gSystemDefaultCenturyStartYear;
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}
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int32_t
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CopticCalendar::getJDEpochOffset() const
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{
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return COPTIC_JD_EPOCH_OFFSET;
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}
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#if 0
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// We do not want to introduce this API in ICU4C.
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// It was accidentally introduced in ICU4J as a public API.
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//-------------------------------------------------------------------------
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// Calendar system Conversion methods...
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//-------------------------------------------------------------------------
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int32_t
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CopticCalendar::copticToJD(int32_t year, int32_t month, int32_t day)
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{
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return CECalendar::ceToJD(year, month, day, COPTIC_JD_EPOCH_OFFSET);
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}
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#endif
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U_NAMESPACE_END
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#endif /* #if !UCONFIG_NO_FORMATTING */
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//eof
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