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149 lines
5.2 KiB
C++
149 lines
5.2 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 - 2009, 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 "cecal.h"
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#include "gregoimp.h" //Math
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#include "cstring.h"
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U_NAMESPACE_BEGIN
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static const int32_t LIMITS[UCAL_FIELD_COUNT][4] = {
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// Minimum Greatest Least Maximum
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// Minimum Maximum
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{ 0, 0, 1, 1}, // ERA
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{ 1, 1, 5000000, 5000000}, // YEAR
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{ 0, 0, 12, 12}, // MONTH
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{ 1, 1, 52, 53}, // WEEK_OF_YEAR
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{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // WEEK_OF_MONTH
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{ 1, 1, 5, 30}, // DAY_OF_MONTH
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{ 1, 1, 365, 366}, // DAY_OF_YEAR
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{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // DAY_OF_WEEK
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{ -1, -1, 1, 5}, // DAY_OF_WEEK_IN_MONTH
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{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // AM_PM
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{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // HOUR
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{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // HOUR_OF_DAY
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{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // MINUTE
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{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // SECOND
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{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // MILLISECOND
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{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // ZONE_OFFSET
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{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // DST_OFFSET
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{ -5000000, -5000000, 5000000, 5000000}, // YEAR_WOY
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{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // DOW_LOCAL
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{ -5000000, -5000000, 5000000, 5000000}, // EXTENDED_YEAR
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{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // JULIAN_DAY
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{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // MILLISECONDS_IN_DAY
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{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // IS_LEAP_MONTH
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{ 0, 0, 12, 12}, // ORDINAL_MONTH
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};
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//-------------------------------------------------------------------------
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// Constructors...
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//-------------------------------------------------------------------------
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CECalendar::CECalendar(const Locale& aLocale, UErrorCode& success)
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: Calendar(TimeZone::forLocaleOrDefault(aLocale), aLocale, success)
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{
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}
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CECalendar::CECalendar (const CECalendar& other)
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: Calendar(other)
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{
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}
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CECalendar::~CECalendar()
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{
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}
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//-------------------------------------------------------------------------
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// Calendar framework
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//-------------------------------------------------------------------------
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int64_t
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CECalendar::handleComputeMonthStart(int32_t eyear,int32_t emonth, UBool /*useMonth*/, UErrorCode& /*status*/) const
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{
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int64_t year64 = eyear;
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// handle month > 12, < 0 (e.g. from add/set)
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if ( emonth >= 0 ) {
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year64 += emonth/13;
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emonth %= 13;
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} else {
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++emonth;
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year64 += emonth/13 - 1;
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emonth = emonth%13 + 12;
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}
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return (
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getJDEpochOffset() // difference from Julian epoch to 1,1,1
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+ 365LL * year64 // number of days from years
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+ ClockMath::floorDivideInt64(year64, 4LL) // extra day of leap year
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+ 30 * emonth // number of days from months (months are 0-based)
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- 1 // number of days for present month (1 based)
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);
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}
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int32_t
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CECalendar::handleGetLimit(UCalendarDateFields field, ELimitType limitType) const
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{
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return LIMITS[field][limitType];
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}
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//-------------------------------------------------------------------------
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// Calendar system Conversion methods...
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//-------------------------------------------------------------------------
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void
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CECalendar::jdToCE(int32_t julianDay, int32_t jdEpochOffset, int32_t& year, int32_t& month, int32_t& day, UErrorCode& status)
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{
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int32_t c4; // number of 4 year cycle (1461 days)
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int32_t r4; // remainder of 4 year cycle, always positive
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if (uprv_add32_overflow(julianDay, -jdEpochOffset, &julianDay)) {
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status = U_ILLEGAL_ARGUMENT_ERROR;
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return;
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}
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c4 = ClockMath::floorDivide(julianDay, 1461, &r4);
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year = 4 * c4 + (r4/365 - r4/1460); // 4 * <number of 4year cycle> + <years within the last cycle>
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int32_t doy = (r4 == 1460) ? 365 : (r4 % 365); // days in present year
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month = doy / 30; // 30 -> Coptic/Ethiopic month length up to 12th month
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day = (doy % 30) + 1; // 1-based days in a month
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}
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static const char* kMonthCode13 = "M13";
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const char* CECalendar::getTemporalMonthCode(UErrorCode& status) const {
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if (get(UCAL_MONTH, status) == 12) {
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return kMonthCode13;
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}
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return Calendar::getTemporalMonthCode(status);
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}
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void
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CECalendar::setTemporalMonthCode(const char* code, UErrorCode& status) {
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if (U_FAILURE(status)) {
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return;
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}
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if (uprv_strcmp(code, kMonthCode13) == 0) {
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set(UCAL_MONTH, 12);
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set(UCAL_IS_LEAP_MONTH, 0);
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return;
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}
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Calendar::setTemporalMonthCode(code, status);
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}
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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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