179 lines
4.6 KiB
C++
179 lines
4.6 KiB
C++
/*
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*******************************************************************************
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* Copyright (C) 2003 - 2008, 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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Calendar*
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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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const UDate CopticCalendar::fgSystemDefaultCentury = DBL_MIN;
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const int32_t CopticCalendar::fgSystemDefaultCenturyYear = -1;
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UDate CopticCalendar::fgSystemDefaultCenturyStart = DBL_MIN;
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int32_t CopticCalendar::fgSystemDefaultCenturyStartYear = -1;
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UDate
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CopticCalendar::defaultCenturyStart() const
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{
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initializeSystemDefaultCentury();
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// use defaultCenturyStart unless it's the flag value;
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// then use systemDefaultCenturyStart
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return fgSystemDefaultCenturyStart;
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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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initializeSystemDefaultCentury();
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// use defaultCenturyStart unless it's the flag value;
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// then use systemDefaultCenturyStart
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return fgSystemDefaultCenturyStartYear;
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}
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void
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CopticCalendar::initializeSystemDefaultCentury()
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{
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// lazy-evaluate systemDefaultCenturyStart
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UBool needsUpdate;
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UMTX_CHECK(NULL, (fgSystemDefaultCenturyStart == fgSystemDefaultCentury), needsUpdate);
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if (!needsUpdate) {
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return;
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}
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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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UDate newStart = calendar.getTime(status);
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int32_t newYear = calendar.get(UCAL_YEAR, status);
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{
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umtx_lock(NULL);
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fgSystemDefaultCenturyStartYear = newYear;
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fgSystemDefaultCenturyStart = newStart;
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umtx_unlock(NULL);
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}
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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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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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