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805dd78c93
Bug 924839 - Remove a patch already part of ICU 52.1. See http://bugs.icu-project.org/trac/ticket/10283 but also note the relevant code was removed completely upstream. r=glandium * * * Bug 924839 - Remove another patch already part of ICU 52.1. See http://bugs.icu-project.org/trac/ticket/10290 for that. r=gaston * * * Bug 924839 - Remove another patch already in ICU 52.1. See http://bugs.icu-project.org/trac/ticket/10045 for more. r=Norbert * * * Bug 924839 - Remove another patch already applied upstream. See http://bugs.icu-project.org/trac/changeset/32937 for more. r=gaston * * * Bug 924839 - Update the ICU update script to update to 52.1, *without* applying any of our local patches. r=glandium * * * Bug 924839 - Make the ICU update script only do updating within intl/icu/source and nowhere else. r=glandium * * * Bug 924839 - Implement the changes that would be made by |cd intl/; ./update-icu.sh http://source.icu-project.org/repos/icu/icu/tags/release-52-1/;|, run with the prior changesets' changes made (thus not applying any of our local patches). These changes don't actually work without subsequent adjustments, but this provides a codebase upon which those adjustments can be made, for the purpose of generating local patches to be kept in intl/icu-patches/. rs=the-usual-suspects * * * Bug 924839 - Update the bug 899722 local patch to make runConfigureICU not override CC/CXX on BSD systems. r=gaston * * * Bug 924839 - Update the bug 724533 patch that makes ICU builds with MozillaBuild on Windows. r=glandium * * * Bug 924839 - Import an upstream patch fixing the genrb tool to properly handle the -R (--omitCollationRules) option. See http://bugs.icu-project.org/trac/ticket/10043 for the original bug report and a link to the ultimate upstream landing. r=Norbert * * * Bug 924839 - Import the upstream fix for http://bugs.icu-project.org/trac/ticket/10486 so that ICU with -DU_USING_ICU_NAMESPACE=0 will compile on Windows. r=Norbert * * * Bug 924839 - Adjust the update script to update ICU, then to apply all local patches (rather than skipping the second step). Thus if the update script is properly run, now, the final result should be no changes at all to the tree. NOT REVIEWED YET * * * Bug 924839 - Update jstests that depend on CLDR locale data to match CLDR 24. r=Norbert
723 lines
26 KiB
C++
723 lines
26 KiB
C++
/*
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******************************************************************************
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* Copyright (C) 2003-2013, International Business Machines Corporation
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* and others. All Rights Reserved.
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******************************************************************************
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*
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* File HEBRWCAL.CPP
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*
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* Modification History:
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*
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* Date Name Description
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* 12/03/2003 srl ported from java HebrewCalendar
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*****************************************************************************
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*/
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#include "hebrwcal.h"
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#if !UCONFIG_NO_FORMATTING
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#include "umutex.h"
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#include <float.h>
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#include "gregoimp.h" // Math
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#include "astro.h" // CalendarAstronomer
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#include "uhash.h"
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#include "ucln_in.h"
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// Hebrew Calendar implementation
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/**
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* The absolute date, in milliseconds since 1/1/1970 AD, Gregorian,
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* of the start of the Hebrew calendar. In order to keep this calendar's
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* time of day in sync with that of the Gregorian calendar, we use
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* midnight, rather than sunset the day before.
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*/
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//static const double EPOCH_MILLIS = -180799862400000.; // 1/1/1 HY
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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, 0, 0}, // ERA
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{ -5000000, -5000000, 5000000, 5000000}, // YEAR
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{ 0, 0, 12, 12}, // MONTH
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{ 1, 1, 51, 56}, // 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, 29, 30}, // DAY_OF_MONTH
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{ 1, 1, 353, 385}, // 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, 5, 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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};
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/**
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* The lengths of the Hebrew months. This is complicated, because there
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* are three different types of years, or six if you count leap years.
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* Due to the rules for postponing the start of the year to avoid having
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* certain holidays fall on the sabbath, the year can end up being three
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* different lengths, called "deficient", "normal", and "complete".
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*/
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static const int8_t MONTH_LENGTH[][3] = {
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// Deficient Normal Complete
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{ 30, 30, 30 }, //Tishri
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{ 29, 29, 30 }, //Heshvan
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{ 29, 30, 30 }, //Kislev
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{ 29, 29, 29 }, //Tevet
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{ 30, 30, 30 }, //Shevat
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{ 30, 30, 30 }, //Adar I (leap years only)
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{ 29, 29, 29 }, //Adar
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{ 30, 30, 30 }, //Nisan
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{ 29, 29, 29 }, //Iyar
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{ 30, 30, 30 }, //Sivan
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{ 29, 29, 29 }, //Tammuz
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{ 30, 30, 30 }, //Av
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{ 29, 29, 29 }, //Elul
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};
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/**
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* The cumulative # of days to the end of each month in a non-leap year
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* Although this can be calculated from the MONTH_LENGTH table,
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* keeping it around separately makes some calculations a lot faster
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*/
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static const int16_t MONTH_START[][3] = {
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// Deficient Normal Complete
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{ 0, 0, 0 }, // (placeholder)
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{ 30, 30, 30 }, // Tishri
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{ 59, 59, 60 }, // Heshvan
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{ 88, 89, 90 }, // Kislev
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{ 117, 118, 119 }, // Tevet
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{ 147, 148, 149 }, // Shevat
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{ 147, 148, 149 }, // (Adar I placeholder)
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{ 176, 177, 178 }, // Adar
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{ 206, 207, 208 }, // Nisan
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{ 235, 236, 237 }, // Iyar
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{ 265, 266, 267 }, // Sivan
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{ 294, 295, 296 }, // Tammuz
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{ 324, 325, 326 }, // Av
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{ 353, 354, 355 }, // Elul
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};
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/**
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* The cumulative # of days to the end of each month in a leap year
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*/
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static const int16_t LEAP_MONTH_START[][3] = {
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// Deficient Normal Complete
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{ 0, 0, 0 }, // (placeholder)
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{ 30, 30, 30 }, // Tishri
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{ 59, 59, 60 }, // Heshvan
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{ 88, 89, 90 }, // Kislev
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{ 117, 118, 119 }, // Tevet
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{ 147, 148, 149 }, // Shevat
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{ 177, 178, 179 }, // Adar I
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{ 206, 207, 208 }, // Adar II
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{ 236, 237, 238 }, // Nisan
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{ 265, 266, 267 }, // Iyar
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{ 295, 296, 297 }, // Sivan
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{ 324, 325, 326 }, // Tammuz
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{ 354, 355, 356 }, // Av
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{ 383, 384, 385 }, // Elul
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};
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static icu::CalendarCache *gCache = NULL;
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U_CDECL_BEGIN
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static UBool calendar_hebrew_cleanup(void) {
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delete gCache;
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gCache = NULL;
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return TRUE;
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}
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U_CDECL_END
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U_NAMESPACE_BEGIN
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//-------------------------------------------------------------------------
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// Constructors...
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//-------------------------------------------------------------------------
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/**
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* Constructs a default <code>HebrewCalendar</code> using the current time
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* in the default time zone with the default locale.
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* @internal
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*/
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HebrewCalendar::HebrewCalendar(const Locale& aLocale, UErrorCode& success)
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: Calendar(TimeZone::createDefault(), aLocale, success)
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{
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setTimeInMillis(getNow(), success); // Call this again now that the vtable is set up properly.
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}
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HebrewCalendar::~HebrewCalendar() {
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}
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const char *HebrewCalendar::getType() const {
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return "hebrew";
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}
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Calendar* HebrewCalendar::clone() const {
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return new HebrewCalendar(*this);
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}
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HebrewCalendar::HebrewCalendar(const HebrewCalendar& other) : Calendar(other) {
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}
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//-------------------------------------------------------------------------
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// Rolling and adding functions overridden from Calendar
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//
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// These methods call through to the default implementation in IBMCalendar
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// for most of the fields and only handle the unusual ones themselves.
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//-------------------------------------------------------------------------
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/**
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* Add a signed amount to a specified field, using this calendar's rules.
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* For example, to add three days to the current date, you can call
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* <code>add(Calendar.DATE, 3)</code>.
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* <p>
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* When adding to certain fields, the values of other fields may conflict and
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* need to be changed. For example, when adding one to the {@link #MONTH MONTH} field
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* for the date "30 Av 5758", the {@link #DAY_OF_MONTH DAY_OF_MONTH} field
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* must be adjusted so that the result is "29 Elul 5758" rather than the invalid
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* "30 Elul 5758".
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* <p>
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* This method is able to add to
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* all fields except for {@link #ERA ERA}, {@link #DST_OFFSET DST_OFFSET},
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* and {@link #ZONE_OFFSET ZONE_OFFSET}.
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* <p>
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* <b>Note:</b> You should always use {@link #roll roll} and add rather
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* than attempting to perform arithmetic operations directly on the fields
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* of a <tt>HebrewCalendar</tt>. Since the {@link #MONTH MONTH} field behaves
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* discontinuously in non-leap years, simple arithmetic can give invalid results.
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* <p>
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* @param field the time field.
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* @param amount the amount to add to the field.
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*
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* @exception IllegalArgumentException if the field is invalid or refers
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* to a field that cannot be handled by this method.
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* @internal
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*/
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void HebrewCalendar::add(UCalendarDateFields field, int32_t amount, UErrorCode& status)
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{
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if(U_FAILURE(status)) {
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return;
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}
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switch (field) {
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case UCAL_MONTH:
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{
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// We can't just do a set(MONTH, get(MONTH) + amount). The
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// reason is ADAR_1. Suppose amount is +2 and we land in
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// ADAR_1 -- then we have to bump to ADAR_2 aka ADAR. But
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// if amount is -2 and we land in ADAR_1, then we have to
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// bump the other way -- down to SHEVAT. - Alan 11/00
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int32_t month = get(UCAL_MONTH, status);
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int32_t year = get(UCAL_YEAR, status);
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UBool acrossAdar1;
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if (amount > 0) {
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acrossAdar1 = (month < ADAR_1); // started before ADAR_1?
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month += amount;
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for (;;) {
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if (acrossAdar1 && month>=ADAR_1 && !isLeapYear(year)) {
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++month;
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}
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if (month <= ELUL) {
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break;
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}
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month -= ELUL+1;
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++year;
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acrossAdar1 = TRUE;
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}
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} else {
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acrossAdar1 = (month > ADAR_1); // started after ADAR_1?
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month += amount;
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for (;;) {
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if (acrossAdar1 && month<=ADAR_1 && !isLeapYear(year)) {
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--month;
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}
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if (month >= 0) {
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break;
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}
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month += ELUL+1;
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--year;
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acrossAdar1 = TRUE;
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}
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}
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set(UCAL_MONTH, month);
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set(UCAL_YEAR, year);
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pinField(UCAL_DAY_OF_MONTH, status);
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break;
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}
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default:
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Calendar::add(field, amount, status);
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break;
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}
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}
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/**
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* @deprecated ICU 2.6 use UCalendarDateFields instead of EDateFields
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*/
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void HebrewCalendar::add(EDateFields field, int32_t amount, UErrorCode& status)
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{
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add((UCalendarDateFields)field, amount, status);
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}
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/**
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* Rolls (up/down) a specified amount time on the given field. For
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* example, to roll the current date up by three days, you can call
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* <code>roll(Calendar.DATE, 3)</code>. If the
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* field is rolled past its maximum allowable value, it will "wrap" back
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* to its minimum and continue rolling.
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* For example, calling <code>roll(Calendar.DATE, 10)</code>
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* on a Hebrew calendar set to "25 Av 5758" will result in the date "5 Av 5758".
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* <p>
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* When rolling certain fields, the values of other fields may conflict and
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* need to be changed. For example, when rolling the {@link #MONTH MONTH} field
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* upward by one for the date "30 Av 5758", the {@link #DAY_OF_MONTH DAY_OF_MONTH} field
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* must be adjusted so that the result is "29 Elul 5758" rather than the invalid
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* "30 Elul".
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* <p>
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* This method is able to roll
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* all fields except for {@link #ERA ERA}, {@link #DST_OFFSET DST_OFFSET},
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* and {@link #ZONE_OFFSET ZONE_OFFSET}. Subclasses may, of course, add support for
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* additional fields in their overrides of <code>roll</code>.
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* <p>
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* <b>Note:</b> You should always use roll and {@link #add add} rather
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* than attempting to perform arithmetic operations directly on the fields
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* of a <tt>HebrewCalendar</tt>. Since the {@link #MONTH MONTH} field behaves
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* discontinuously in non-leap years, simple arithmetic can give invalid results.
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* <p>
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* @param field the time field.
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* @param amount the amount by which the field should be rolled.
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*
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* @exception IllegalArgumentException if the field is invalid or refers
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* to a field that cannot be handled by this method.
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* @internal
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*/
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void HebrewCalendar::roll(UCalendarDateFields field, int32_t amount, UErrorCode& status)
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{
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if(U_FAILURE(status)) {
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return;
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}
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switch (field) {
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case UCAL_MONTH:
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{
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int32_t month = get(UCAL_MONTH, status);
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int32_t year = get(UCAL_YEAR, status);
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UBool leapYear = isLeapYear(year);
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int32_t yearLength = monthsInYear(year);
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int32_t newMonth = month + (amount % yearLength);
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//
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// If it's not a leap year and we're rolling past the missing month
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// of ADAR_1, we need to roll an extra month to make up for it.
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//
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if (!leapYear) {
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if (amount > 0 && month < ADAR_1 && newMonth >= ADAR_1) {
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newMonth++;
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} else if (amount < 0 && month > ADAR_1 && newMonth <= ADAR_1) {
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newMonth--;
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}
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}
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set(UCAL_MONTH, (newMonth + 13) % 13);
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pinField(UCAL_DAY_OF_MONTH, status);
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return;
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}
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default:
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Calendar::roll(field, amount, status);
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}
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}
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void HebrewCalendar::roll(EDateFields field, int32_t amount, UErrorCode& status) {
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roll((UCalendarDateFields)field, amount, status);
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}
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//-------------------------------------------------------------------------
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// Support methods
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//-------------------------------------------------------------------------
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// Hebrew date calculations are performed in terms of days, hours, and
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// "parts" (or halakim), which are 1/1080 of an hour, or 3 1/3 seconds.
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static const int32_t HOUR_PARTS = 1080;
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static const int32_t DAY_PARTS = 24*HOUR_PARTS;
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// An approximate value for the length of a lunar month.
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// It is used to calculate the approximate year and month of a given
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// absolute date.
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static const int32_t MONTH_DAYS = 29;
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static const int32_t MONTH_FRACT = 12*HOUR_PARTS + 793;
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static const int32_t MONTH_PARTS = MONTH_DAYS*DAY_PARTS + MONTH_FRACT;
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// The time of the new moon (in parts) on 1 Tishri, year 1 (the epoch)
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// counting from noon on the day before. BAHARAD is an abbreviation of
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// Bet (Monday), Hey (5 hours from sunset), Resh-Daled (204).
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static const int32_t BAHARAD = 11*HOUR_PARTS + 204;
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/**
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* Finds the day # of the first day in the given Hebrew year.
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* To do this, we want to calculate the time of the Tishri 1 new moon
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* in that year.
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* <p>
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* The algorithm here is similar to ones described in a number of
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* references, including:
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* <ul>
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* <li>"Calendrical Calculations", by Nachum Dershowitz & Edward Reingold,
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* Cambridge University Press, 1997, pages 85-91.
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*
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* <li>Hebrew Calendar Science and Myths,
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* <a href="http://www.geocities.com/Athens/1584/">
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* http://www.geocities.com/Athens/1584/</a>
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*
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* <li>The Calendar FAQ,
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* <a href="http://www.faqs.org/faqs/calendars/faq/">
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* http://www.faqs.org/faqs/calendars/faq/</a>
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* </ul>
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*/
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int32_t HebrewCalendar::startOfYear(int32_t year, UErrorCode &status)
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{
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ucln_i18n_registerCleanup(UCLN_I18N_HEBREW_CALENDAR, calendar_hebrew_cleanup);
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int32_t day = CalendarCache::get(&gCache, year, status);
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if (day == 0) {
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int32_t months = (235 * year - 234) / 19; // # of months before year
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int64_t frac = (int64_t)months * MONTH_FRACT + BAHARAD; // Fractional part of day #
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day = months * 29 + (int32_t)(frac / DAY_PARTS); // Whole # part of calculation
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frac = frac % DAY_PARTS; // Time of day
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int32_t wd = (day % 7); // Day of week (0 == Monday)
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if (wd == 2 || wd == 4 || wd == 6) {
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// If the 1st is on Sun, Wed, or Fri, postpone to the next day
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day += 1;
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wd = (day % 7);
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}
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if (wd == 1 && frac > 15*HOUR_PARTS+204 && !isLeapYear(year) ) {
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// If the new moon falls after 3:11:20am (15h204p from the previous noon)
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// on a Tuesday and it is not a leap year, postpone by 2 days.
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// This prevents 356-day years.
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day += 2;
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}
|
|
else if (wd == 0 && frac > 21*HOUR_PARTS+589 && isLeapYear(year-1) ) {
|
|
// If the new moon falls after 9:32:43 1/3am (21h589p from yesterday noon)
|
|
// on a Monday and *last* year was a leap year, postpone by 1 day.
|
|
// Prevents 382-day years.
|
|
day += 1;
|
|
}
|
|
CalendarCache::put(&gCache, year, day, status);
|
|
}
|
|
return day;
|
|
}
|
|
|
|
/**
|
|
* Find the day of the week for a given day
|
|
*
|
|
* @param day The # of days since the start of the Hebrew calendar,
|
|
* 1-based (i.e. 1/1/1 AM is day 1).
|
|
*/
|
|
int32_t HebrewCalendar::absoluteDayToDayOfWeek(int32_t day)
|
|
{
|
|
// We know that 1/1/1 AM is a Monday, which makes the math easy...
|
|
return (day % 7) + 1;
|
|
}
|
|
|
|
/**
|
|
* Returns the the type of a given year.
|
|
* 0 "Deficient" year with 353 or 383 days
|
|
* 1 "Normal" year with 354 or 384 days
|
|
* 2 "Complete" year with 355 or 385 days
|
|
*/
|
|
int32_t HebrewCalendar::yearType(int32_t year) const
|
|
{
|
|
int32_t yearLength = handleGetYearLength(year);
|
|
|
|
if (yearLength > 380) {
|
|
yearLength -= 30; // Subtract length of leap month.
|
|
}
|
|
|
|
int type = 0;
|
|
|
|
switch (yearLength) {
|
|
case 353:
|
|
type = 0; break;
|
|
case 354:
|
|
type = 1; break;
|
|
case 355:
|
|
type = 2; break;
|
|
default:
|
|
//throw new RuntimeException("Illegal year length " + yearLength + " in year " + year);
|
|
type = 1;
|
|
}
|
|
return type;
|
|
}
|
|
|
|
/**
|
|
* Determine whether a given Hebrew year is a leap year
|
|
*
|
|
* The rule here is that if (year % 19) == 0, 3, 6, 8, 11, 14, or 17.
|
|
* The formula below performs the same test, believe it or not.
|
|
*/
|
|
UBool HebrewCalendar::isLeapYear(int32_t year) {
|
|
//return (year * 12 + 17) % 19 >= 12;
|
|
int32_t x = (year*12 + 17) % 19;
|
|
return x >= ((x < 0) ? -7 : 12);
|
|
}
|
|
|
|
int32_t HebrewCalendar::monthsInYear(int32_t year) {
|
|
return isLeapYear(year) ? 13 : 12;
|
|
}
|
|
|
|
//-------------------------------------------------------------------------
|
|
// Calendar framework
|
|
//-------------------------------------------------------------------------
|
|
|
|
/**
|
|
* @internal
|
|
*/
|
|
int32_t HebrewCalendar::handleGetLimit(UCalendarDateFields field, ELimitType limitType) const {
|
|
return LIMITS[field][limitType];
|
|
}
|
|
|
|
/**
|
|
* Returns the length of the given month in the given year
|
|
* @internal
|
|
*/
|
|
int32_t HebrewCalendar::handleGetMonthLength(int32_t extendedYear, int32_t month) const {
|
|
// Resolve out-of-range months. This is necessary in order to
|
|
// obtain the correct year. We correct to
|
|
// a 12- or 13-month year (add/subtract 12 or 13, depending
|
|
// on the year) but since we _always_ number from 0..12, and
|
|
// the leap year determines whether or not month 5 (Adar 1)
|
|
// is present, we allow 0..12 in any given year.
|
|
while (month < 0) {
|
|
month += monthsInYear(--extendedYear);
|
|
}
|
|
// Careful: allow 0..12 in all years
|
|
while (month > 12) {
|
|
month -= monthsInYear(extendedYear++);
|
|
}
|
|
|
|
switch (month) {
|
|
case HESHVAN:
|
|
case KISLEV:
|
|
// These two month lengths can vary
|
|
return MONTH_LENGTH[month][yearType(extendedYear)];
|
|
|
|
default:
|
|
// The rest are a fixed length
|
|
return MONTH_LENGTH[month][0];
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the number of days in the given Hebrew year
|
|
* @internal
|
|
*/
|
|
int32_t HebrewCalendar::handleGetYearLength(int32_t eyear) const {
|
|
UErrorCode status = U_ZERO_ERROR;
|
|
return startOfYear(eyear+1, status) - startOfYear(eyear, status);
|
|
}
|
|
|
|
//-------------------------------------------------------------------------
|
|
// Functions for converting from milliseconds to field values
|
|
//-------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Subclasses may override this method to compute several fields
|
|
* specific to each calendar system. These are:
|
|
*
|
|
* <ul><li>ERA
|
|
* <li>YEAR
|
|
* <li>MONTH
|
|
* <li>DAY_OF_MONTH
|
|
* <li>DAY_OF_YEAR
|
|
* <li>EXTENDED_YEAR</ul>
|
|
*
|
|
* Subclasses can refer to the DAY_OF_WEEK and DOW_LOCAL fields,
|
|
* which will be set when this method is called. Subclasses can
|
|
* also call the getGregorianXxx() methods to obtain Gregorian
|
|
* calendar equivalents for the given Julian day.
|
|
*
|
|
* <p>In addition, subclasses should compute any subclass-specific
|
|
* fields, that is, fields from BASE_FIELD_COUNT to
|
|
* getFieldCount() - 1.
|
|
* @internal
|
|
*/
|
|
void HebrewCalendar::handleComputeFields(int32_t julianDay, UErrorCode &status) {
|
|
int32_t d = julianDay - 347997;
|
|
double m = ((d * (double)DAY_PARTS)/ (double) MONTH_PARTS); // Months (approx)
|
|
int32_t year = (int32_t)( ((19. * m + 234.) / 235.) + 1.); // Years (approx)
|
|
int32_t ys = startOfYear(year, status); // 1st day of year
|
|
int32_t dayOfYear = (d - ys);
|
|
|
|
// Because of the postponement rules, it's possible to guess wrong. Fix it.
|
|
while (dayOfYear < 1) {
|
|
year--;
|
|
ys = startOfYear(year, status);
|
|
dayOfYear = (d - ys);
|
|
}
|
|
|
|
// Now figure out which month we're in, and the date within that month
|
|
int32_t type = yearType(year);
|
|
UBool isLeap = isLeapYear(year);
|
|
|
|
int32_t month = 0;
|
|
int32_t momax = sizeof(MONTH_START) / (3 * sizeof(MONTH_START[0][0]));
|
|
while (month < momax && dayOfYear > ( isLeap ? LEAP_MONTH_START[month][type] : MONTH_START[month][type] ) ) {
|
|
month++;
|
|
}
|
|
if (month >= momax || month<=0) {
|
|
// TODO: I found dayOfYear could be out of range when
|
|
// a large value is set to julianDay. I patched startOfYear
|
|
// to reduce the chace, but it could be still reproduced either
|
|
// by startOfYear or other places. For now, we check
|
|
// the month is in valid range to avoid out of array index
|
|
// access problem here. However, we need to carefully review
|
|
// the calendar implementation to check the extreme limit of
|
|
// each calendar field and the code works well for any values
|
|
// in the valid value range. -yoshito
|
|
status = U_ILLEGAL_ARGUMENT_ERROR;
|
|
return;
|
|
}
|
|
month--;
|
|
int dayOfMonth = dayOfYear - (isLeap ? LEAP_MONTH_START[month][type] : MONTH_START[month][type]);
|
|
|
|
internalSet(UCAL_ERA, 0);
|
|
internalSet(UCAL_YEAR, year);
|
|
internalSet(UCAL_EXTENDED_YEAR, year);
|
|
internalSet(UCAL_MONTH, month);
|
|
internalSet(UCAL_DAY_OF_MONTH, dayOfMonth);
|
|
internalSet(UCAL_DAY_OF_YEAR, dayOfYear);
|
|
}
|
|
|
|
//-------------------------------------------------------------------------
|
|
// Functions for converting from field values to milliseconds
|
|
//-------------------------------------------------------------------------
|
|
|
|
/**
|
|
* @internal
|
|
*/
|
|
int32_t HebrewCalendar::handleGetExtendedYear() {
|
|
int32_t year;
|
|
if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR) {
|
|
year = internalGet(UCAL_EXTENDED_YEAR, 1); // Default to year 1
|
|
} else {
|
|
year = internalGet(UCAL_YEAR, 1); // Default to year 1
|
|
}
|
|
return year;
|
|
}
|
|
|
|
/**
|
|
* Return JD of start of given month/year.
|
|
* @internal
|
|
*/
|
|
int32_t HebrewCalendar::handleComputeMonthStart(int32_t eyear, int32_t month, UBool /*useMonth*/) const {
|
|
UErrorCode status = U_ZERO_ERROR;
|
|
// Resolve out-of-range months. This is necessary in order to
|
|
// obtain the correct year. We correct to
|
|
// a 12- or 13-month year (add/subtract 12 or 13, depending
|
|
// on the year) but since we _always_ number from 0..12, and
|
|
// the leap year determines whether or not month 5 (Adar 1)
|
|
// is present, we allow 0..12 in any given year.
|
|
while (month < 0) {
|
|
month += monthsInYear(--eyear);
|
|
}
|
|
// Careful: allow 0..12 in all years
|
|
while (month > 12) {
|
|
month -= monthsInYear(eyear++);
|
|
}
|
|
|
|
int32_t day = startOfYear(eyear, status);
|
|
|
|
if(U_FAILURE(status)) {
|
|
return 0;
|
|
}
|
|
|
|
if (month != 0) {
|
|
if (isLeapYear(eyear)) {
|
|
day += LEAP_MONTH_START[month][yearType(eyear)];
|
|
} else {
|
|
day += MONTH_START[month][yearType(eyear)];
|
|
}
|
|
}
|
|
|
|
return (int) (day + 347997);
|
|
}
|
|
|
|
UBool
|
|
HebrewCalendar::inDaylightTime(UErrorCode& status) const
|
|
{
|
|
// copied from GregorianCalendar
|
|
if (U_FAILURE(status) || !getTimeZone().useDaylightTime())
|
|
return FALSE;
|
|
|
|
// Force an update of the state of the Calendar.
|
|
((HebrewCalendar*)this)->complete(status); // cast away const
|
|
|
|
return (UBool)(U_SUCCESS(status) ? (internalGet(UCAL_DST_OFFSET) != 0) : FALSE);
|
|
}
|
|
|
|
/**
|
|
* 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 = U_INITONCE_INITIALIZER;
|
|
|
|
UBool HebrewCalendar::haveDefaultCentury() const
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
static void U_CALLCONV initializeSystemDefaultCentury()
|
|
{
|
|
// initialize systemDefaultCentury and systemDefaultCenturyYear based
|
|
// on the current time. They'll be set to 80 years before
|
|
// the current time.
|
|
UErrorCode status = U_ZERO_ERROR;
|
|
HebrewCalendar calendar(Locale("@calendar=hebrew"),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 HebrewCalendar::defaultCenturyStart() const {
|
|
// lazy-evaluate systemDefaultCenturyStart
|
|
umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury);
|
|
return gSystemDefaultCenturyStart;
|
|
}
|
|
|
|
int32_t HebrewCalendar::defaultCenturyStartYear() const {
|
|
// lazy-evaluate systemDefaultCenturyStartYear
|
|
umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury);
|
|
return gSystemDefaultCenturyStartYear;
|
|
}
|
|
|
|
|
|
UOBJECT_DEFINE_RTTI_IMPLEMENTATION(HebrewCalendar)
|
|
|
|
U_NAMESPACE_END
|
|
|
|
#endif // UCONFIG_NO_FORMATTING
|
|
|