16f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org/* 26f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org******************************************************************************* 36f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* Copyright (C) 1997-2013, International Business Machines Corporation and 46f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* others. All Rights Reserved. 56f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org******************************************************************************* 66f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* 76f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* File GREGOCAL.CPP 86f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* 96f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* Modification History: 106f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* 116f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* Date Name Description 126f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* 02/05/97 clhuang Creation. 136f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* 03/28/97 aliu Made highly questionable fix to computeFields to 146f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* handle DST correctly. 156f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* 04/22/97 aliu Cleaned up code drastically. Added monthLength(). 166f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* Finished unimplemented parts of computeTime() for 176f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* week-based date determination. Removed quetionable 186f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* fix and wrote correct fix for computeFields() and 196f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* daylight time handling. Rewrote inDaylightTime() 206f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* and computeFields() to handle sensitive Daylight to 216f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* Standard time transitions correctly. 226f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* 05/08/97 aliu Added code review changes. Fixed isLeapYear() to 236f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* not cutover. 246f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* 08/12/97 aliu Added equivalentTo. Misc other fixes. Updated 256f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* add() from Java source. 266f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* 07/28/98 stephen Sync up with JDK 1.2 276f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* 09/14/98 stephen Changed type of kOneDay, kOneWeek to double. 286f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* Fixed bug in roll() 296f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* 10/15/99 aliu Fixed j31, incorrect WEEK_OF_YEAR computation. 306f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* 10/15/99 aliu Fixed j32, cannot set date to Feb 29 2000 AD. 316f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* {JDK bug 4210209 4209272} 326f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* 11/15/99 weiv Added YEAR_WOY and DOW_LOCAL computation 336f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* to timeToFields method, updated kMinValues, kMaxValues & kLeastMaxValues 346f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* 12/09/99 aliu Fixed j81, calculation errors and roll bugs 356f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* in year of cutover. 366f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* 01/24/2000 aliu Revised computeJulianDay for YEAR YEAR_WOY WOY. 376f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org******************************************************************************** 386f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org*/ 396f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 406f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#include "unicode/utypes.h" 416f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#include <float.h> 426f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 436f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#if !UCONFIG_NO_FORMATTING 446f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 456f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#include "unicode/gregocal.h" 466f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#include "gregoimp.h" 476f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#include "umutex.h" 486f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#include "uassert.h" 496f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 506f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ***************************************************************************** 516f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// class GregorianCalendar 526f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ***************************************************************************** 536f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 546f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org/** 556f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* Note that the Julian date used here is not a true Julian date, since 566f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* it is measured from midnight, not noon. This value is the Julian 576f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* day number of January 1, 1970 (Gregorian calendar) at noon UTC. [LIU] 586f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org*/ 596f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 606f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgstatic const int16_t kNumDays[] 616f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org= {0,31,59,90,120,151,181,212,243,273,304,334}; // 0-based, for day-in-year 626f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgstatic const int16_t kLeapNumDays[] 636f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org= {0,31,60,91,121,152,182,213,244,274,305,335}; // 0-based, for day-in-year 646f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgstatic const int8_t kMonthLength[] 656f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org= {31,28,31,30,31,30,31,31,30,31,30,31}; // 0-based 666f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgstatic const int8_t kLeapMonthLength[] 676f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org= {31,29,31,30,31,30,31,31,30,31,30,31}; // 0-based 686f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 696f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// setTimeInMillis() limits the Julian day range to +/-7F000000. 706f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// This would seem to limit the year range to: 716f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ms=+183882168921600000 jd=7f000000 December 20, 5828963 AD 726f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ms=-184303902528000000 jd=81000000 September 20, 5838270 BC 736f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// HOWEVER, CalendarRegressionTest/Test4167060 shows that the actual 746f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// range limit on the year field is smaller (~ +/-140000). [alan 3.0] 756f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 766f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgstatic const int32_t kGregorianCalendarLimits[UCAL_FIELD_COUNT][4] = { 776f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Minimum Greatest Least Maximum 786f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Minimum Maximum 796f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org { 0, 0, 1, 1}, // ERA 806f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org { 1, 1, 140742, 144683}, // YEAR 816f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org { 0, 0, 11, 11}, // MONTH 826f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org { 1, 1, 52, 53}, // WEEK_OF_YEAR 836f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // WEEK_OF_MONTH 846f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org { 1, 1, 28, 31}, // DAY_OF_MONTH 856f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org { 1, 1, 365, 366}, // DAY_OF_YEAR 866f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // DAY_OF_WEEK 876f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org { -1, -1, 4, 5}, // DAY_OF_WEEK_IN_MONTH 886f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // AM_PM 896f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // HOUR 906f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // HOUR_OF_DAY 916f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // MINUTE 926f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // SECOND 936f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // MILLISECOND 946f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // ZONE_OFFSET 956f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // DST_OFFSET 966f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org { -140742, -140742, 140742, 144683}, // YEAR_WOY 976f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // DOW_LOCAL 986f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org { -140742, -140742, 140742, 144683}, // EXTENDED_YEAR 996f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // JULIAN_DAY 1006f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // MILLISECONDS_IN_DAY 1016f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // IS_LEAP_MONTH 1026f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org}; 1036f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 1046f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org/* 1056f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* <pre> 1066f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* Greatest Least 1076f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* Field name Minimum Minimum Maximum Maximum 1086f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* ---------- ------- ------- ------- ------- 1096f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* ERA 0 0 1 1 1106f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* YEAR 1 1 140742 144683 1116f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* MONTH 0 0 11 11 1126f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* WEEK_OF_YEAR 1 1 52 53 1136f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* WEEK_OF_MONTH 0 0 4 6 1146f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* DAY_OF_MONTH 1 1 28 31 1156f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* DAY_OF_YEAR 1 1 365 366 1166f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* DAY_OF_WEEK 1 1 7 7 1176f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* DAY_OF_WEEK_IN_MONTH -1 -1 4 5 1186f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* AM_PM 0 0 1 1 1196f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* HOUR 0 0 11 11 1206f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* HOUR_OF_DAY 0 0 23 23 1216f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* MINUTE 0 0 59 59 1226f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* SECOND 0 0 59 59 1236f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* MILLISECOND 0 0 999 999 1246f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* ZONE_OFFSET -12* -12* 12* 12* 1256f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* DST_OFFSET 0 0 1* 1* 1266f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* YEAR_WOY 1 1 140742 144683 1276f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* DOW_LOCAL 1 1 7 7 1286f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* </pre> 1296f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* (*) In units of one-hour 1306f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org*/ 1316f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 1326f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#if defined( U_DEBUG_CALSVC ) || defined (U_DEBUG_CAL) 1336f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#include <stdio.h> 1346f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#endif 1356f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 1366f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgU_NAMESPACE_BEGIN 1376f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 1386f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgUOBJECT_DEFINE_RTTI_IMPLEMENTATION(GregorianCalendar) 1396f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 1406f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// 00:00:00 UTC, October 15, 1582, expressed in ms from the epoch. 1416f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// Note that only Italy and other Catholic countries actually 1426f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// observed this cutover. Most other countries followed in 1436f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// the next few centuries, some as late as 1928. [LIU] 1446f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// in Java, -12219292800000L 1456f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org//const UDate GregorianCalendar::kPapalCutover = -12219292800000L; 1466f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgstatic const uint32_t kCutoverJulianDay = 2299161; 1476f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgstatic const UDate kPapalCutover = (2299161.0 - kEpochStartAsJulianDay) * U_MILLIS_PER_DAY; 1486f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org//static const UDate kPapalCutoverJulian = (2299161.0 - kEpochStartAsJulianDay); 1496f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 1506f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 1516f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 1526f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::GregorianCalendar(UErrorCode& status) 1536f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org: Calendar(status), 1546f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgfGregorianCutover(kPapalCutover), 1556f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgfCutoverJulianDay(kCutoverJulianDay), fNormalizedGregorianCutover(fGregorianCutover), fGregorianCutoverYear(1582), 1566f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgfIsGregorian(TRUE), fInvertGregorian(FALSE) 1576f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 1586f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org setTimeInMillis(getNow(), status); 1596f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 1606f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 1616f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 1626f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 1636f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::GregorianCalendar(TimeZone* zone, UErrorCode& status) 1646f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org: Calendar(zone, Locale::getDefault(), status), 1656f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgfGregorianCutover(kPapalCutover), 1666f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgfCutoverJulianDay(kCutoverJulianDay), fNormalizedGregorianCutover(fGregorianCutover), fGregorianCutoverYear(1582), 1676f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgfIsGregorian(TRUE), fInvertGregorian(FALSE) 1686f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 1696f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org setTimeInMillis(getNow(), status); 1706f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 1716f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 1726f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 1736f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 1746f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::GregorianCalendar(const TimeZone& zone, UErrorCode& status) 1756f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org: Calendar(zone, Locale::getDefault(), status), 1766f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgfGregorianCutover(kPapalCutover), 1776f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgfCutoverJulianDay(kCutoverJulianDay), fNormalizedGregorianCutover(fGregorianCutover), fGregorianCutoverYear(1582), 1786f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgfIsGregorian(TRUE), fInvertGregorian(FALSE) 1796f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 1806f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org setTimeInMillis(getNow(), status); 1816f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 1826f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 1836f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 1846f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 1856f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::GregorianCalendar(const Locale& aLocale, UErrorCode& status) 1866f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org: Calendar(TimeZone::createDefault(), aLocale, status), 1876f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgfGregorianCutover(kPapalCutover), 1886f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgfCutoverJulianDay(kCutoverJulianDay), fNormalizedGregorianCutover(fGregorianCutover), fGregorianCutoverYear(1582), 1896f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgfIsGregorian(TRUE), fInvertGregorian(FALSE) 1906f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 1916f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org setTimeInMillis(getNow(), status); 1926f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 1936f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 1946f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 1956f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 1966f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::GregorianCalendar(TimeZone* zone, const Locale& aLocale, 1976f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org UErrorCode& status) 1986f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org : Calendar(zone, aLocale, status), 1996f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fGregorianCutover(kPapalCutover), 2006f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fCutoverJulianDay(kCutoverJulianDay), fNormalizedGregorianCutover(fGregorianCutover), fGregorianCutoverYear(1582), 2016f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fIsGregorian(TRUE), fInvertGregorian(FALSE) 2026f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 2036f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org setTimeInMillis(getNow(), status); 2046f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 2056f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 2066f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 2076f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 2086f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::GregorianCalendar(const TimeZone& zone, const Locale& aLocale, 2096f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org UErrorCode& status) 2106f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org : Calendar(zone, aLocale, status), 2116f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fGregorianCutover(kPapalCutover), 2126f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fCutoverJulianDay(kCutoverJulianDay), fNormalizedGregorianCutover(fGregorianCutover), fGregorianCutoverYear(1582), 2136f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fIsGregorian(TRUE), fInvertGregorian(FALSE) 2146f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 2156f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org setTimeInMillis(getNow(), status); 2166f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 2176f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 2186f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 2196f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 2206f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::GregorianCalendar(int32_t year, int32_t month, int32_t date, 2216f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org UErrorCode& status) 2226f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org : Calendar(TimeZone::createDefault(), Locale::getDefault(), status), 2236f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fGregorianCutover(kPapalCutover), 2246f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fCutoverJulianDay(kCutoverJulianDay), fNormalizedGregorianCutover(fGregorianCutover), fGregorianCutoverYear(1582), 2256f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fIsGregorian(TRUE), fInvertGregorian(FALSE) 2266f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 2276f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org set(UCAL_ERA, AD); 2286f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org set(UCAL_YEAR, year); 2296f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org set(UCAL_MONTH, month); 2306f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org set(UCAL_DATE, date); 2316f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 2326f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 2336f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 2346f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 2356f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::GregorianCalendar(int32_t year, int32_t month, int32_t date, 2366f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t hour, int32_t minute, UErrorCode& status) 2376f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org : Calendar(TimeZone::createDefault(), Locale::getDefault(), status), 2386f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fGregorianCutover(kPapalCutover), 2396f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fCutoverJulianDay(kCutoverJulianDay), fNormalizedGregorianCutover(fGregorianCutover), fGregorianCutoverYear(1582), 2406f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fIsGregorian(TRUE), fInvertGregorian(FALSE) 2416f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 2426f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org set(UCAL_ERA, AD); 2436f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org set(UCAL_YEAR, year); 2446f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org set(UCAL_MONTH, month); 2456f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org set(UCAL_DATE, date); 2466f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org set(UCAL_HOUR_OF_DAY, hour); 2476f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org set(UCAL_MINUTE, minute); 2486f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 2496f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 2506f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 2516f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 2526f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::GregorianCalendar(int32_t year, int32_t month, int32_t date, 2536f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t hour, int32_t minute, int32_t second, 2546f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org UErrorCode& status) 2556f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org : Calendar(TimeZone::createDefault(), Locale::getDefault(), status), 2566f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fGregorianCutover(kPapalCutover), 2576f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fCutoverJulianDay(kCutoverJulianDay), fNormalizedGregorianCutover(fGregorianCutover), fGregorianCutoverYear(1582), 2586f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fIsGregorian(TRUE), fInvertGregorian(FALSE) 2596f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 2606f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org set(UCAL_ERA, AD); 2616f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org set(UCAL_YEAR, year); 2626f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org set(UCAL_MONTH, month); 2636f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org set(UCAL_DATE, date); 2646f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org set(UCAL_HOUR_OF_DAY, hour); 2656f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org set(UCAL_MINUTE, minute); 2666f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org set(UCAL_SECOND, second); 2676f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 2686f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 2696f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 2706f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 2716f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::~GregorianCalendar() 2726f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 2736f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 2746f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 2756f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 2766f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 2776f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::GregorianCalendar(const GregorianCalendar &source) 2786f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org: Calendar(source), 2796f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgfGregorianCutover(source.fGregorianCutover), 2806f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgfCutoverJulianDay(source.fCutoverJulianDay), fNormalizedGregorianCutover(source.fNormalizedGregorianCutover), fGregorianCutoverYear(source.fGregorianCutoverYear), 2816f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgfIsGregorian(source.fIsGregorian), fInvertGregorian(source.fInvertGregorian) 2826f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 2836f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 2846f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 2856f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 2866f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 2876f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgCalendar* GregorianCalendar::clone() const 2886f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 2896f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return new GregorianCalendar(*this); 2906f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 2916f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 2926f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 2936f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 2946f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar & 2956f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::operator=(const GregorianCalendar &right) 2966f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 2976f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (this != &right) 2986f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org { 2996f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org Calendar::operator=(right); 3006f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fGregorianCutover = right.fGregorianCutover; 3016f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fNormalizedGregorianCutover = right.fNormalizedGregorianCutover; 3026f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fGregorianCutoverYear = right.fGregorianCutoverYear; 3036f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fCutoverJulianDay = right.fCutoverJulianDay; 3046f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 3056f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return *this; 3066f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 3076f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 3086f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 3096f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 3106f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgUBool GregorianCalendar::isEquivalentTo(const Calendar& other) const 3116f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 3126f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Calendar override. 3136f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return Calendar::isEquivalentTo(other) && 3146f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fGregorianCutover == ((GregorianCalendar*)&other)->fGregorianCutover; 3156f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 3166f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 3176f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 3186f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 3196f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgvoid 3206f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::setGregorianChange(UDate date, UErrorCode& status) 3216f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 3226f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (U_FAILURE(status)) 3236f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return; 3246f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 3256f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fGregorianCutover = date; 3266f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 3276f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Precompute two internal variables which we use to do the actual 3286f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // cutover computations. These are the normalized cutover, which is the 3296f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // midnight at or before the cutover, and the cutover year. The 3306f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // normalized cutover is in pure date milliseconds; it contains no time 3316f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // of day or timezone component, and it used to compare against other 3326f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // pure date values. 3336f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t cutoverDay = (int32_t)ClockMath::floorDivide(fGregorianCutover, (double)kOneDay); 3346f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fNormalizedGregorianCutover = cutoverDay * kOneDay; 3356f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 3366f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Handle the rare case of numeric overflow. If the user specifies a 3376f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // change of UDate(Long.MIN_VALUE), in order to get a pure Gregorian 3386f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // calendar, then the epoch day is -106751991168, which when multiplied 3396f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // by ONE_DAY gives 9223372036794351616 -- the negative value is too 3406f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // large for 64 bits, and overflows into a positive value. We correct 3416f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // this by using the next day, which for all intents is semantically 3426f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // equivalent. 3436f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (cutoverDay < 0 && fNormalizedGregorianCutover > 0) { 3446f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fNormalizedGregorianCutover = (cutoverDay + 1) * kOneDay; 3456f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 3466f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 3476f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Normalize the year so BC values are represented as 0 and negative 3486f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // values. 3496f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org GregorianCalendar *cal = new GregorianCalendar(getTimeZone(), status); 3506f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org /* test for NULL */ 3516f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (cal == 0) { 3526f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org status = U_MEMORY_ALLOCATION_ERROR; 3536f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return; 3546f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 3556f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if(U_FAILURE(status)) 3566f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return; 3576f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org cal->setTime(date, status); 3586f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fGregorianCutoverYear = cal->get(UCAL_YEAR, status); 3596f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (cal->get(UCAL_ERA, status) == BC) 3606f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fGregorianCutoverYear = 1 - fGregorianCutoverYear; 3616f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fCutoverJulianDay = cutoverDay; 3626f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org delete cal; 3636f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 3646f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 3656f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 3666f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgvoid GregorianCalendar::handleComputeFields(int32_t julianDay, UErrorCode& status) { 3676f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t eyear, month, dayOfMonth, dayOfYear, unusedRemainder; 3686f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 3696f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 3706f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if(U_FAILURE(status)) { 3716f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return; 3726f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 3736f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 3746f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#if defined (U_DEBUG_CAL) 3756f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fprintf(stderr, "%s:%d: jd%d- (greg's %d)- [cut=%d]\n", 3766f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org __FILE__, __LINE__, julianDay, getGregorianDayOfYear(), fCutoverJulianDay); 3776f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#endif 3786f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 3796f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 3806f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (julianDay >= fCutoverJulianDay) { 3816f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org month = getGregorianMonth(); 3826f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org dayOfMonth = getGregorianDayOfMonth(); 3836f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org dayOfYear = getGregorianDayOfYear(); 3846f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org eyear = getGregorianYear(); 3856f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } else { 3866f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // The Julian epoch day (not the same as Julian Day) 3876f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // is zero on Saturday December 30, 0 (Gregorian). 3886f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t julianEpochDay = julianDay - (kJan1_1JulianDay - 2); 3896f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org eyear = (int32_t) ClockMath::floorDivide((4.0*julianEpochDay) + 1464.0, (int32_t) 1461, unusedRemainder); 3906f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 3916f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Compute the Julian calendar day number for January 1, eyear 3926f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t january1 = 365*(eyear-1) + ClockMath::floorDivide(eyear-1, (int32_t)4); 3936f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org dayOfYear = (julianEpochDay - january1); // 0-based 3946f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 3956f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Julian leap years occurred historically every 4 years starting 3966f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // with 8 AD. Before 8 AD the spacing is irregular; every 3 years 3976f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // from 45 BC to 9 BC, and then none until 8 AD. However, we don't 3986f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // implement this historical detail; instead, we implement the 3996f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // computatinally cleaner proleptic calendar, which assumes 4006f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // consistent 4-year cycles throughout time. 4016f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org UBool isLeap = ((eyear&0x3) == 0); // equiv. to (eyear%4 == 0) 4026f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 4036f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Common Julian/Gregorian calculation 4046f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t correction = 0; 4056f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t march1 = isLeap ? 60 : 59; // zero-based DOY for March 1 4066f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (dayOfYear >= march1) { 4076f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org correction = isLeap ? 1 : 2; 4086f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 4096f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org month = (12 * (dayOfYear + correction) + 6) / 367; // zero-based month 4106f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org dayOfMonth = dayOfYear - (isLeap?kLeapNumDays[month]:kNumDays[month]) + 1; // one-based DOM 4116f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org ++dayOfYear; 4126f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#if defined (U_DEBUG_CAL) 4136f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // fprintf(stderr, "%d - %d[%d] + 1\n", dayOfYear, isLeap?kLeapNumDays[month]:kNumDays[month], month ); 4146f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // fprintf(stderr, "%s:%d: greg's HCF %d -> %d/%d/%d not %d/%d/%d\n", 4156f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // __FILE__, __LINE__,julianDay, 4166f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // eyear,month,dayOfMonth, 4176f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // getGregorianYear(), getGregorianMonth(), getGregorianDayOfMonth() ); 4186f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fprintf(stderr, "%s:%d: doy %d (greg's %d)- [cut=%d]\n", 4196f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org __FILE__, __LINE__, dayOfYear, getGregorianDayOfYear(), fCutoverJulianDay); 4206f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#endif 4216f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 4226f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 4236f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 4246f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // [j81] if we are after the cutover in its year, shift the day of the year 4256f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if((eyear == fGregorianCutoverYear) && (julianDay >= fCutoverJulianDay)) { 4266f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org //from handleComputeMonthStart 4276f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t gregShift = Grego::gregorianShift(eyear); 4286f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#if defined (U_DEBUG_CAL) 4296f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fprintf(stderr, "%s:%d: gregorian shift %d ::: doy%d => %d [cut=%d]\n", 4306f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org __FILE__, __LINE__,gregShift, dayOfYear, dayOfYear+gregShift, fCutoverJulianDay); 4316f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#endif 4326f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org dayOfYear += gregShift; 4336f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 4346f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 4356f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org internalSet(UCAL_MONTH, month); 4366f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org internalSet(UCAL_DAY_OF_MONTH, dayOfMonth); 4376f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org internalSet(UCAL_DAY_OF_YEAR, dayOfYear); 4386f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org internalSet(UCAL_EXTENDED_YEAR, eyear); 4396f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t era = AD; 4406f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (eyear < 1) { 4416f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org era = BC; 4426f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org eyear = 1 - eyear; 4436f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 4446f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org internalSet(UCAL_ERA, era); 4456f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org internalSet(UCAL_YEAR, eyear); 4466f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 4476f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 4486f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 4496f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 4506f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 4516f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgUDate 4526f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::getGregorianChange() const 4536f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 4546f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return fGregorianCutover; 4556f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 4566f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 4576f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 4586f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 4596f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgUBool 4606f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::isLeapYear(int32_t year) const 4616f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 4626f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // MSVC complains bitterly if we try to use Grego::isLeapYear here 4636f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // NOTE: year&0x3 == year%4 4646f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return (year >= fGregorianCutoverYear ? 4656f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org (((year&0x3) == 0) && ((year%100 != 0) || (year%400 == 0))) : // Gregorian 4666f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org ((year&0x3) == 0)); // Julian 4676f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 4686f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 4696f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 4706f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 4716f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgint32_t GregorianCalendar::handleComputeJulianDay(UCalendarDateFields bestField) 4726f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 4736f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fInvertGregorian = FALSE; 4746f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 4756f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t jd = Calendar::handleComputeJulianDay(bestField); 4766f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 4776f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if((bestField == UCAL_WEEK_OF_YEAR) && // if we are doing WOY calculations, we are counting relative to Jan 1 *julian* 4786f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org (internalGet(UCAL_EXTENDED_YEAR)==fGregorianCutoverYear) && 4796f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org jd >= fCutoverJulianDay) { 4806f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fInvertGregorian = TRUE; // So that the Julian Jan 1 will be used in handleComputeMonthStart 4816f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return Calendar::handleComputeJulianDay(bestField); 4826f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 4836f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 4846f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 4856f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // The following check handles portions of the cutover year BEFORE the 4866f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // cutover itself happens. 4876f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org //if ((fIsGregorian==TRUE) != (jd >= fCutoverJulianDay)) { /* cutoverJulianDay)) { */ 4886f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if ((fIsGregorian==TRUE) != (jd >= fCutoverJulianDay)) { /* cutoverJulianDay)) { */ 4896f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#if defined (U_DEBUG_CAL) 4906f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fprintf(stderr, "%s:%d: jd [invert] %d\n", 4916f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org __FILE__, __LINE__, jd); 4926f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#endif 4936f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fInvertGregorian = TRUE; 4946f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org jd = Calendar::handleComputeJulianDay(bestField); 4956f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#if defined (U_DEBUG_CAL) 4966f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fprintf(stderr, "%s:%d: fIsGregorian %s, fInvertGregorian %s - ", 4976f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org __FILE__, __LINE__,fIsGregorian?"T":"F", fInvertGregorian?"T":"F"); 4986f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fprintf(stderr, " jd NOW %d\n", 4996f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org jd); 5006f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#endif 5016f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } else { 5026f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#if defined (U_DEBUG_CAL) 5036f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fprintf(stderr, "%s:%d: jd [==] %d - %sfIsGregorian %sfInvertGregorian, %d\n", 5046f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org __FILE__, __LINE__, jd, fIsGregorian?"T":"F", fInvertGregorian?"T":"F", bestField); 5056f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#endif 5066f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 5076f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 5086f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if(fIsGregorian && (internalGet(UCAL_EXTENDED_YEAR) == fGregorianCutoverYear)) { 5096f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t gregShift = Grego::gregorianShift(internalGet(UCAL_EXTENDED_YEAR)); 5106f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (bestField == UCAL_DAY_OF_YEAR) { 5116f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#if defined (U_DEBUG_CAL) 5126f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fprintf(stderr, "%s:%d: [DOY%d] gregorian shift of JD %d += %d\n", 5136f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org __FILE__, __LINE__, fFields[bestField],jd, gregShift); 5146f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#endif 5156f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org jd -= gregShift; 5166f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } else if ( bestField == UCAL_WEEK_OF_MONTH ) { 5176f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t weekShift = 14; 5186f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#if defined (U_DEBUG_CAL) 5196f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fprintf(stderr, "%s:%d: [WOY/WOM] gregorian week shift of %d += %d\n", 5206f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org __FILE__, __LINE__, jd, weekShift); 5216f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#endif 5226f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org jd += weekShift; // shift by weeks for week based fields. 5236f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 5246f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 5256f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 5266f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return jd; 5276f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 5286f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 5296f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgint32_t GregorianCalendar::handleComputeMonthStart(int32_t eyear, int32_t month, 5306f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 5316f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org UBool /* useMonth */) const 5326f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 5336f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org GregorianCalendar *nonConstThis = (GregorianCalendar*)this; // cast away const 5346f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 5356f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // If the month is out of range, adjust it into range, and 5366f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // modify the extended year value accordingly. 5376f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (month < 0 || month > 11) { 5386f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org eyear += ClockMath::floorDivide(month, 12, month); 5396f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 5406f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 5416f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org UBool isLeap = eyear%4 == 0; 5426f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t y = eyear-1; 5436f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t julianDay = 365*y + ClockMath::floorDivide(y, 4) + (kJan1_1JulianDay - 3); 5446f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 5456f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org nonConstThis->fIsGregorian = (eyear >= fGregorianCutoverYear); 5466f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#if defined (U_DEBUG_CAL) 5476f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fprintf(stderr, "%s:%d: (hcms%d/%d) fIsGregorian %s, fInvertGregorian %s\n", 5486f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org __FILE__, __LINE__, eyear,month, fIsGregorian?"T":"F", fInvertGregorian?"T":"F"); 5496f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#endif 5506f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (fInvertGregorian) { 5516f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org nonConstThis->fIsGregorian = !fIsGregorian; 5526f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 5536f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (fIsGregorian) { 5546f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org isLeap = isLeap && ((eyear%100 != 0) || (eyear%400 == 0)); 5556f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Add 2 because Gregorian calendar starts 2 days after 5566f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Julian calendar 5576f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t gregShift = Grego::gregorianShift(eyear); 5586f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#if defined (U_DEBUG_CAL) 5596f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fprintf(stderr, "%s:%d: (hcms%d/%d) gregorian shift of %d += %d\n", 5606f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org __FILE__, __LINE__, eyear, month, julianDay, gregShift); 5616f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#endif 5626f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org julianDay += gregShift; 5636f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 5646f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 5656f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // At this point julianDay indicates the day BEFORE the first 5666f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // day of January 1, <eyear> of either the Julian or Gregorian 5676f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // calendar. 5686f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 5696f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (month != 0) { 5706f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org julianDay += isLeap?kLeapNumDays[month]:kNumDays[month]; 5716f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 5726f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 5736f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return julianDay; 5746f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 5756f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 5766f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgint32_t GregorianCalendar::handleGetMonthLength(int32_t extendedYear, int32_t month) const 5776f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 5786f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // If the month is out of range, adjust it into range, and 5796f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // modify the extended year value accordingly. 5806f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (month < 0 || month > 11) { 5816f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org extendedYear += ClockMath::floorDivide(month, 12, month); 5826f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 5836f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 5846f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return isLeapYear(extendedYear) ? kLeapMonthLength[month] : kMonthLength[month]; 5856f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 5866f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 5876f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgint32_t GregorianCalendar::handleGetYearLength(int32_t eyear) const { 5886f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return isLeapYear(eyear) ? 366 : 365; 5896f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 5906f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 5916f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 5926f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgint32_t 5936f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::monthLength(int32_t month) const 5946f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 5956f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t year = internalGet(UCAL_EXTENDED_YEAR); 5966f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return handleGetMonthLength(year, month); 5976f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 5986f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 5996f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 6006f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 6016f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgint32_t 6026f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::monthLength(int32_t month, int32_t year) const 6036f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 6046f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return isLeapYear(year) ? kLeapMonthLength[month] : kMonthLength[month]; 6056f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 6066f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 6076f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 6086f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 6096f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgint32_t 6106f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::yearLength(int32_t year) const 6116f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 6126f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return isLeapYear(year) ? 366 : 365; 6136f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 6146f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 6156f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 6166f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 6176f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgint32_t 6186f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::yearLength() const 6196f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 6206f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return isLeapYear(internalGet(UCAL_YEAR)) ? 366 : 365; 6216f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 6226f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 6236f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 6246f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 6256f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org/** 6266f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* After adjustments such as add(MONTH), add(YEAR), we don't want the 6276f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* month to jump around. E.g., we don't want Jan 31 + 1 month to go to Mar 6286f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* 3, we want it to go to Feb 28. Adjustments which might run into this 6296f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* problem call this method to retain the proper month. 6306f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org*/ 6316f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgvoid 6326f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::pinDayOfMonth() 6336f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 6346f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t monthLen = monthLength(internalGet(UCAL_MONTH)); 6356f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t dom = internalGet(UCAL_DATE); 6366f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if(dom > monthLen) 6376f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org set(UCAL_DATE, monthLen); 6386f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 6396f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 6406f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 6416f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 6426f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 6436f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgUBool 6446f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::validateFields() const 6456f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 6466f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org for (int32_t field = 0; field < UCAL_FIELD_COUNT; field++) { 6476f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Ignore DATE and DAY_OF_YEAR which are handled below 6486f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (field != UCAL_DATE && 6496f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org field != UCAL_DAY_OF_YEAR && 6506f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org isSet((UCalendarDateFields)field) && 6516f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org ! boundsCheck(internalGet((UCalendarDateFields)field), (UCalendarDateFields)field)) 6526f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return FALSE; 6536f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 6546f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 6556f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Values differ in Least-Maximum and Maximum should be handled 6566f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // specially. 6576f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (isSet(UCAL_DATE)) { 6586f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t date = internalGet(UCAL_DATE); 6596f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (date < getMinimum(UCAL_DATE) || 6606f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org date > monthLength(internalGet(UCAL_MONTH))) { 6616f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return FALSE; 6626f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 6636f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 6646f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 6656f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (isSet(UCAL_DAY_OF_YEAR)) { 6666f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t days = internalGet(UCAL_DAY_OF_YEAR); 6676f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (days < 1 || days > yearLength()) { 6686f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return FALSE; 6696f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 6706f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 6716f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 6726f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Handle DAY_OF_WEEK_IN_MONTH, which must not have the value zero. 6736f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // We've checked against minimum and maximum above already. 6746f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (isSet(UCAL_DAY_OF_WEEK_IN_MONTH) && 6756f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 0 == internalGet(UCAL_DAY_OF_WEEK_IN_MONTH)) { 6766f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return FALSE; 6776f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 6786f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 6796f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return TRUE; 6806f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 6816f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 6826f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 6836f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 6846f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgUBool 6856f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::boundsCheck(int32_t value, UCalendarDateFields field) const 6866f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 6876f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return value >= getMinimum(field) && value <= getMaximum(field); 6886f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 6896f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 6906f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 6916f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 6926f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgUDate 6936f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::getEpochDay(UErrorCode& status) 6946f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 6956f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org complete(status); 6966f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Divide by 1000 (convert to seconds) in order to prevent overflow when 6976f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // dealing with UDate(Long.MIN_VALUE) and UDate(Long.MAX_VALUE). 6986f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org double wallSec = internalGetTime()/1000 + (internalGet(UCAL_ZONE_OFFSET) + internalGet(UCAL_DST_OFFSET))/1000; 6996f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 7006f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return ClockMath::floorDivide(wallSec, kOneDay/1000.0); 7016f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 7026f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 7036f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 7046f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 7056f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 7066f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 7076f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 7086f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org/** 7096f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* Compute the julian day number of the day BEFORE the first day of 7106f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* January 1, year 1 of the given calendar. If julianDay == 0, it 7116f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* specifies (Jan. 1, 1) - 1, in whatever calendar we are using (Julian 7126f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* or Gregorian). 7136f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org*/ 7146f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgdouble GregorianCalendar::computeJulianDayOfYear(UBool isGregorian, 7156f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t year, UBool& isLeap) 7166f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 7176f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org isLeap = year%4 == 0; 7186f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t y = year - 1; 7196f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org double julianDay = 365.0*y + ClockMath::floorDivide(y, 4) + (kJan1_1JulianDay - 3); 7206f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 7216f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (isGregorian) { 7226f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org isLeap = isLeap && ((year%100 != 0) || (year%400 == 0)); 7236f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Add 2 because Gregorian calendar starts 2 days after Julian calendar 7246f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org julianDay += Grego::gregorianShift(year); 7256f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 7266f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 7276f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return julianDay; 7286f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 7296f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 7306f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// /** 7316f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// * Compute the day of week, relative to the first day of week, from 7326f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// * 0..6, of the current DOW_LOCAL or DAY_OF_WEEK fields. This is 7336f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// * equivalent to get(DOW_LOCAL) - 1. 7346f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// */ 7356f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// int32_t GregorianCalendar::computeRelativeDOW() const { 7366f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// int32_t relDow = 0; 7376f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// if (fStamp[UCAL_DOW_LOCAL] > fStamp[UCAL_DAY_OF_WEEK]) { 7386f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// relDow = internalGet(UCAL_DOW_LOCAL) - 1; // 1-based 7396f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// } else if (fStamp[UCAL_DAY_OF_WEEK] != kUnset) { 7406f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// relDow = internalGet(UCAL_DAY_OF_WEEK) - getFirstDayOfWeek(); 7416f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// if (relDow < 0) relDow += 7; 7426f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// } 7436f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// return relDow; 7446f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// } 7456f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 7466f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// /** 7476f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// * Compute the day of week, relative to the first day of week, 7486f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// * from 0..6 of the given julian day. 7496f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// */ 7506f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// int32_t GregorianCalendar::computeRelativeDOW(double julianDay) const { 7516f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// int32_t relDow = julianDayToDayOfWeek(julianDay) - getFirstDayOfWeek(); 7526f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// if (relDow < 0) { 7536f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// relDow += 7; 7546f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// } 7556f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// return relDow; 7566f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// } 7576f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 7586f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// /** 7596f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// * Compute the DOY using the WEEK_OF_YEAR field and the julian day 7606f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// * of the day BEFORE January 1 of a year (a return value from 7616f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// * computeJulianDayOfYear). 7626f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// */ 7636f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// int32_t GregorianCalendar::computeDOYfromWOY(double julianDayOfYear) const { 7646f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// // Compute DOY from day of week plus week of year 7656f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 7666f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// // Find the day of the week for the first of this year. This 7676f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// // is zero-based, with 0 being the locale-specific first day of 7686f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// // the week. Add 1 to get first day of year. 7696f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// int32_t fdy = computeRelativeDOW(julianDayOfYear + 1); 7706f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 7716f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// return 7726f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// // Compute doy of first (relative) DOW of WOY 1 7736f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// (((7 - fdy) < getMinimalDaysInFirstWeek()) 7746f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ? (8 - fdy) : (1 - fdy)) 7756f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 7766f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// // Adjust for the week number. 7776f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// + (7 * (internalGet(UCAL_WEEK_OF_YEAR) - 1)) 7786f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 7796f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// // Adjust for the DOW 7806f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// + computeRelativeDOW(); 7816f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// } 7826f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 7836f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 7846f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 7856f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgdouble 7866f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::millisToJulianDay(UDate millis) 7876f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 7886f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return (double)kEpochStartAsJulianDay + ClockMath::floorDivide(millis, (double)kOneDay); 7896f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 7906f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 7916f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 7926f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 7936f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgUDate 7946f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::julianDayToMillis(double julian) 7956f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 7966f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return (UDate) ((julian - kEpochStartAsJulianDay) * (double) kOneDay); 7976f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 7986f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 7996f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 8006f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 8016f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgint32_t 8026f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::aggregateStamp(int32_t stamp_a, int32_t stamp_b) 8036f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 8046f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return (((stamp_a != kUnset && stamp_b != kUnset) 8056f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org ? uprv_max(stamp_a, stamp_b) 8066f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org : (int32_t)kUnset)); 8076f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 8086f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 8096f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 8106f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 8116f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org/** 8126f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* Roll a field by a signed amount. 8136f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* Note: This will be made public later. [LIU] 8146f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org*/ 8156f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 8166f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgvoid 8176f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::roll(EDateFields field, int32_t amount, UErrorCode& status) { 8186f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org roll((UCalendarDateFields) field, amount, status); 8196f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 8206f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 8216f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgvoid 8226f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::roll(UCalendarDateFields field, int32_t amount, UErrorCode& status) 8236f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 8246f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if((amount == 0) || U_FAILURE(status)) { 8256f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return; 8266f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 8276f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 8286f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // J81 processing. (gregorian cutover) 8296f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org UBool inCutoverMonth = FALSE; 8306f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t cMonthLen=0; // 'c' for cutover; in days 8316f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t cDayOfMonth=0; // no discontinuity: [0, cMonthLen) 8326f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org double cMonthStart=0.0; // in ms 8336f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 8346f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Common code - see if we're in the cutover month of the cutover year 8356f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if(get(UCAL_EXTENDED_YEAR, status) == fGregorianCutoverYear) { 8366f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org switch (field) { 8376f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org case UCAL_DAY_OF_MONTH: 8386f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org case UCAL_WEEK_OF_MONTH: 8396f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org { 8406f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t max = monthLength(internalGet(UCAL_MONTH)); 8416f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org UDate t = internalGetTime(); 8426f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // We subtract 1 from the DAY_OF_MONTH to make it zero-based, and an 8436f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // additional 10 if we are after the cutover. Thus the monthStart 8446f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // value will be correct iff we actually are in the cutover month. 8456f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org cDayOfMonth = internalGet(UCAL_DAY_OF_MONTH) - ((t >= fGregorianCutover) ? 10 : 0); 8466f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org cMonthStart = t - ((cDayOfMonth - 1) * kOneDay); 8476f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // A month containing the cutover is 10 days shorter. 8486f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if ((cMonthStart < fGregorianCutover) && 8496f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org (cMonthStart + (cMonthLen=(max-10))*kOneDay >= fGregorianCutover)) { 8506f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org inCutoverMonth = TRUE; 8516f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 8526f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 8536f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org default: 8546f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org ; 8556f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 8566f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 8576f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 8586f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org switch (field) { 8596f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org case UCAL_WEEK_OF_YEAR: { 8606f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Unlike WEEK_OF_MONTH, WEEK_OF_YEAR never shifts the day of the 8616f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // week. Also, rolling the week of the year can have seemingly 8626f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // strange effects simply because the year of the week of year 8636f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // may be different from the calendar year. For example, the 8646f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // date Dec 28, 1997 is the first day of week 1 of 1998 (if 8656f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // weeks start on Sunday and the minimal days in first week is 8666f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // <= 3). 8676f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t woy = get(UCAL_WEEK_OF_YEAR, status); 8686f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Get the ISO year, which matches the week of year. This 8696f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // may be one year before or after the calendar year. 8706f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t isoYear = get(UCAL_YEAR_WOY, status); 8716f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t isoDoy = internalGet(UCAL_DAY_OF_YEAR); 8726f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (internalGet(UCAL_MONTH) == UCAL_JANUARY) { 8736f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (woy >= 52) { 8746f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org isoDoy += handleGetYearLength(isoYear); 8756f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 8766f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } else { 8776f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (woy == 1) { 8786f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org isoDoy -= handleGetYearLength(isoYear - 1); 8796f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 8806f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 8816f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org woy += amount; 8826f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Do fast checks to avoid unnecessary computation: 8836f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (woy < 1 || woy > 52) { 8846f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Determine the last week of the ISO year. 8856f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // We do this using the standard formula we use 8866f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // everywhere in this file. If we can see that the 8876f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // days at the end of the year are going to fall into 8886f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // week 1 of the next year, we drop the last week by 8896f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // subtracting 7 from the last day of the year. 8906f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t lastDoy = handleGetYearLength(isoYear); 8916f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t lastRelDow = (lastDoy - isoDoy + internalGet(UCAL_DAY_OF_WEEK) - 8926f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org getFirstDayOfWeek()) % 7; 8936f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (lastRelDow < 0) lastRelDow += 7; 8946f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if ((6 - lastRelDow) >= getMinimalDaysInFirstWeek()) lastDoy -= 7; 8956f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t lastWoy = weekNumber(lastDoy, lastRelDow + 1); 8966f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org woy = ((woy + lastWoy - 1) % lastWoy) + 1; 8976f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 8986f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org set(UCAL_WEEK_OF_YEAR, woy); 8996f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org set(UCAL_YEAR_WOY,isoYear); 9006f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return; 9016f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 9026f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 9036f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org case UCAL_DAY_OF_MONTH: 9046f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if( !inCutoverMonth ) { 9056f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org Calendar::roll(field, amount, status); 9066f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return; 9076f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } else { 9086f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // [j81] 1582 special case for DOM 9096f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // The default computation works except when the current month 9106f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // contains the Gregorian cutover. We handle this special case 9116f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // here. [j81 - aliu] 9126f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org double monthLen = cMonthLen * kOneDay; 9136f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org double msIntoMonth = uprv_fmod(internalGetTime() - cMonthStart + 9146f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org amount * kOneDay, monthLen); 9156f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (msIntoMonth < 0) { 9166f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org msIntoMonth += monthLen; 9176f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 9186f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#if defined (U_DEBUG_CAL) 9196f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fprintf(stderr, "%s:%d: roll DOM %d -> %.0lf ms \n", 9206f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org __FILE__, __LINE__,amount, cMonthLen, cMonthStart+msIntoMonth); 9216f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#endif 9226f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org setTimeInMillis(cMonthStart + msIntoMonth, status); 9236f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return; 9246f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 9256f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 9266f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org case UCAL_WEEK_OF_MONTH: 9276f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if( !inCutoverMonth ) { 9286f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org Calendar::roll(field, amount, status); 9296f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return; 9306f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } else { 9316f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#if defined (U_DEBUG_CAL) 9326f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fprintf(stderr, "%s:%d: roll WOM %d ??????????????????? \n", 9336f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org __FILE__, __LINE__,amount); 9346f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#endif 9356f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // NOTE: following copied from the old 9366f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // GregorianCalendar::roll( WEEK_OF_MONTH ) code 9376f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 9386f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // This is tricky, because during the roll we may have to shift 9396f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // to a different day of the week. For example: 9406f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 9416f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // s m t w r f s 9426f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // 1 2 3 4 5 9436f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // 6 7 8 9 10 11 12 9446f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 9456f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // When rolling from the 6th or 7th back one week, we go to the 9466f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // 1st (assuming that the first partial week counts). The same 9476f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // thing happens at the end of the month. 9486f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 9496f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // The other tricky thing is that we have to figure out whether 9506f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // the first partial week actually counts or not, based on the 9516f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // minimal first days in the week. And we have to use the 9526f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // correct first day of the week to delineate the week 9536f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // boundaries. 9546f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 9556f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Here's our algorithm. First, we find the real boundaries of 9566f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // the month. Then we discard the first partial week if it 9576f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // doesn't count in this locale. Then we fill in the ends with 9586f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // phantom days, so that the first partial week and the last 9596f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // partial week are full weeks. We then have a nice square 9606f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // block of weeks. We do the usual rolling within this block, 9616f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // as is done elsewhere in this method. If we wind up on one of 9626f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // the phantom days that we added, we recognize this and pin to 9636f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // the first or the last day of the month. Easy, eh? 9646f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 9656f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Another wrinkle: To fix jitterbug 81, we have to make all this 9666f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // work in the oddball month containing the Gregorian cutover. 9676f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // This month is 10 days shorter than usual, and also contains 9686f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // a discontinuity in the days; e.g., the default cutover month 9696f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // is Oct 1582, and goes from day of month 4 to day of month 15. 9706f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 9716f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Normalize the DAY_OF_WEEK so that 0 is the first day of the week 9726f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // in this locale. We have dow in 0..6. 9736f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t dow = internalGet(UCAL_DAY_OF_WEEK) - getFirstDayOfWeek(); 9746f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (dow < 0) 9756f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org dow += 7; 9766f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 9776f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Find the day of month, compensating for cutover discontinuity. 9786f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t dom = cDayOfMonth; 9796f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 9806f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Find the day of the week (normalized for locale) for the first 9816f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // of the month. 9826f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t fdm = (dow - dom + 1) % 7; 9836f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (fdm < 0) 9846f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fdm += 7; 9856f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 9866f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Get the first day of the first full week of the month, 9876f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // including phantom days, if any. Figure out if the first week 9886f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // counts or not; if it counts, then fill in phantom days. If 9896f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // not, advance to the first real full week (skip the partial week). 9906f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t start; 9916f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if ((7 - fdm) < getMinimalDaysInFirstWeek()) 9926f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org start = 8 - fdm; // Skip the first partial week 9936f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org else 9946f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org start = 1 - fdm; // This may be zero or negative 9956f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 9966f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Get the day of the week (normalized for locale) for the last 9976f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // day of the month. 9986f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t monthLen = cMonthLen; 9996f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t ldm = (monthLen - dom + dow) % 7; 10006f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // We know monthLen >= DAY_OF_MONTH so we skip the += 7 step here. 10016f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 10026f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Get the limit day for the blocked-off rectangular month; that 10036f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // is, the day which is one past the last day of the month, 10046f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // after the month has already been filled in with phantom days 10056f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // to fill out the last week. This day has a normalized DOW of 0. 10066f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t limit = monthLen + 7 - ldm; 10076f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 10086f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Now roll between start and (limit - 1). 10096f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t gap = limit - start; 10106f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t newDom = (dom + amount*7 - start) % gap; 10116f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (newDom < 0) 10126f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org newDom += gap; 10136f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org newDom += start; 10146f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 10156f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Finally, pin to the real start and end of the month. 10166f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (newDom < 1) 10176f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org newDom = 1; 10186f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (newDom > monthLen) 10196f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org newDom = monthLen; 10206f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 10216f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Set the DAY_OF_MONTH. We rely on the fact that this field 10226f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // takes precedence over everything else (since all other fields 10236f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // are also set at this point). If this fact changes (if the 10246f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // disambiguation algorithm changes) then we will have to unset 10256f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // the appropriate fields here so that DAY_OF_MONTH is attended 10266f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // to. 10276f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 10286f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // If we are in the cutover month, manipulate ms directly. Don't do 10296f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // this in general because it doesn't work across DST boundaries 10306f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // (details, details). This takes care of the discontinuity. 10316f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org setTimeInMillis(cMonthStart + (newDom-1)*kOneDay, status); 10326f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return; 10336f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 10346f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 10356f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org default: 10366f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org Calendar::roll(field, amount, status); 10376f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return; 10386f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 10396f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 10406f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 10416f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 10426f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 10436f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 10446f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org/** 10456f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* Return the minimum value that this field could have, given the current date. 10466f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* For the Gregorian calendar, this is the same as getMinimum() and getGreatestMinimum(). 10476f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* @param field the time field. 10486f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* @return the minimum value that this field could have, given the current date. 10496f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* @deprecated ICU 2.6. Use getActualMinimum(UCalendarDateFields field) instead. 10506f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org*/ 10516f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgint32_t GregorianCalendar::getActualMinimum(EDateFields field) const 10526f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 10536f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return getMinimum((UCalendarDateFields)field); 10546f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 10556f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 10566f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgint32_t GregorianCalendar::getActualMinimum(EDateFields field, UErrorCode& /* status */) const 10576f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 10586f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return getMinimum((UCalendarDateFields)field); 10596f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 10606f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 10616f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org/** 10626f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* Return the minimum value that this field could have, given the current date. 10636f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* For the Gregorian calendar, this is the same as getMinimum() and getGreatestMinimum(). 10646f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* @param field the time field. 10656f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* @return the minimum value that this field could have, given the current date. 10666f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* @draft ICU 2.6. 10676f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org*/ 10686f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgint32_t GregorianCalendar::getActualMinimum(UCalendarDateFields field, UErrorCode& /* status */) const 10696f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 10706f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return getMinimum(field); 10716f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 10726f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 10736f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 10746f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------ 10756f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 10766f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org/** 10776f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* Old year limits were least max 292269054, max 292278994. 10786f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org*/ 10796f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 10806f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org/** 10816f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* @stable ICU 2.0 10826f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org*/ 10836f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgint32_t GregorianCalendar::handleGetLimit(UCalendarDateFields field, ELimitType limitType) const { 10846f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return kGregorianCalendarLimits[field][limitType]; 10856f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 10866f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 10876f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org/** 10886f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* Return the maximum value that this field could have, given the current date. 10896f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* For example, with the date "Feb 3, 1997" and the DAY_OF_MONTH field, the actual 10906f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* maximum would be 28; for "Feb 3, 1996" it s 29. Similarly for a Hebrew calendar, 10916f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* for some years the actual maximum for MONTH is 12, and for others 13. 10926f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* @stable ICU 2.0 10936f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org*/ 10946f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgint32_t GregorianCalendar::getActualMaximum(UCalendarDateFields field, UErrorCode& status) const 10956f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 10966f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org /* It is a known limitation that the code here (and in getActualMinimum) 10976f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * won't behave properly at the extreme limits of GregorianCalendar's 10986f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * representable range (except for the code that handles the YEAR 10996f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * field). That's because the ends of the representable range are at 11006f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * odd spots in the year. For calendars with the default Gregorian 11016f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * cutover, these limits are Sun Dec 02 16:47:04 GMT 292269055 BC to Sun 11026f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * Aug 17 07:12:55 GMT 292278994 AD, somewhat different for non-GMT 11036f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * zones. As a result, if the calendar is set to Aug 1 292278994 AD, 11046f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * the actual maximum of DAY_OF_MONTH is 17, not 30. If the date is Mar 11056f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * 31 in that year, the actual maximum month might be Jul, whereas is 11066f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * the date is Mar 15, the actual maximum might be Aug -- depending on 11076f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * the precise semantics that are desired. Similar considerations 11086f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * affect all fields. Nonetheless, this effect is sufficiently arcane 11096f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * that we permit it, rather than complicating the code to handle such 11106f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * intricacies. - liu 8/20/98 11116f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 11126f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * UPDATE: No longer true, since we have pulled in the limit values on 11136f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * the year. - Liu 11/6/00 */ 11146f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 11156f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org switch (field) { 11166f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 11176f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org case UCAL_YEAR: 11186f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org /* The year computation is no different, in principle, from the 11196f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * others, however, the range of possible maxima is large. In 11206f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * addition, the way we know we've exceeded the range is different. 11216f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * For these reasons, we use the special case code below to handle 11226f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * this field. 11236f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * 11246f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * The actual maxima for YEAR depend on the type of calendar: 11256f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * 11266f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * Gregorian = May 17, 292275056 BC - Aug 17, 292278994 AD 11276f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * Julian = Dec 2, 292269055 BC - Jan 3, 292272993 AD 11286f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * Hybrid = Dec 2, 292269055 BC - Aug 17, 292278994 AD 11296f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * 11306f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * We know we've exceeded the maximum when either the month, date, 11316f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * time, or era changes in response to setting the year. We don't 11326f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * check for month, date, and time here because the year and era are 11336f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * sufficient to detect an invalid year setting. NOTE: If code is 11346f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * added to check the month and date in the future for some reason, 11356f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * Feb 29 must be allowed to shift to Mar 1 when setting the year. 11366f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org */ 11376f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org { 11386f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if(U_FAILURE(status)) return 0; 11396f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org Calendar *cal = clone(); 11406f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if(!cal) { 11416f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org status = U_MEMORY_ALLOCATION_ERROR; 11426f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return 0; 11436f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 11446f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 11456f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org cal->setLenient(TRUE); 11466f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 11476f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t era = cal->get(UCAL_ERA, status); 11486f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org UDate d = cal->getTime(status); 11496f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 11506f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org /* Perform a binary search, with the invariant that lowGood is a 11516f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * valid year, and highBad is an out of range year. 11526f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org */ 11536f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t lowGood = kGregorianCalendarLimits[UCAL_YEAR][1]; 11546f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t highBad = kGregorianCalendarLimits[UCAL_YEAR][2]+1; 11556f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org while ((lowGood + 1) < highBad) { 11566f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t y = (lowGood + highBad) / 2; 11576f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org cal->set(UCAL_YEAR, y); 11586f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (cal->get(UCAL_YEAR, status) == y && cal->get(UCAL_ERA, status) == era) { 11596f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org lowGood = y; 11606f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } else { 11616f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org highBad = y; 11626f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org cal->setTime(d, status); // Restore original fields 11636f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 11646f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 11656f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 11666f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org delete cal; 11676f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return lowGood; 11686f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 11696f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 11706f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org default: 11716f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return Calendar::getActualMaximum(field,status); 11726f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 11736f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 11746f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 11756f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 11766f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgint32_t GregorianCalendar::handleGetExtendedYear() { 11776f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // the year to return 11786f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t year = kEpochYear; 11796f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 11806f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // year field to use 11816f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t yearField = UCAL_EXTENDED_YEAR; 11826f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 11836f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // There are three separate fields which could be used to 11846f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // derive the proper year. Use the one most recently set. 11856f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (fStamp[yearField] < fStamp[UCAL_YEAR]) 11866f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org yearField = UCAL_YEAR; 11876f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (fStamp[yearField] < fStamp[UCAL_YEAR_WOY]) 11886f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org yearField = UCAL_YEAR_WOY; 11896f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 11906f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // based on the "best" year field, get the year 11916f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org switch(yearField) { 11926f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org case UCAL_EXTENDED_YEAR: 11936f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org year = internalGet(UCAL_EXTENDED_YEAR, kEpochYear); 11946f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org break; 11956f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 11966f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org case UCAL_YEAR: 11976f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org { 11986f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // The year defaults to the epoch start, the era to AD 11996f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t era = internalGet(UCAL_ERA, AD); 12006f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (era == BC) { 12016f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org year = 1 - internalGet(UCAL_YEAR, 1); // Convert to extended year 12026f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } else { 12036f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org year = internalGet(UCAL_YEAR, kEpochYear); 12046f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 12056f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 12066f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org break; 12076f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 12086f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org case UCAL_YEAR_WOY: 12096f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org year = handleGetExtendedYearFromWeekFields(internalGet(UCAL_YEAR_WOY), internalGet(UCAL_WEEK_OF_YEAR)); 12106f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#if defined (U_DEBUG_CAL) 12116f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // if(internalGet(UCAL_YEAR_WOY) != year) { 12126f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org fprintf(stderr, "%s:%d: hGEYFWF[%d,%d] -> %d\n", 12136f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org __FILE__, __LINE__,internalGet(UCAL_YEAR_WOY),internalGet(UCAL_WEEK_OF_YEAR),year); 12146f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org //} 12156f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#endif 12166f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org break; 12176f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 12186f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org default: 12196f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org year = kEpochYear; 12206f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 12216f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return year; 12226f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 12236f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 12246f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgint32_t GregorianCalendar::handleGetExtendedYearFromWeekFields(int32_t yearWoy, int32_t woy) 12256f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 12266f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // convert year to extended form 12276f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org int32_t era = internalGet(UCAL_ERA, AD); 12286f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if(era == BC) { 12296f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org yearWoy = 1 - yearWoy; 12306f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 12316f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return Calendar::handleGetExtendedYearFromWeekFields(yearWoy, woy); 12326f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 12336f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 12346f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 12356f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 12366f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 12376f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgUBool 12386f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::inDaylightTime(UErrorCode& status) const 12396f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 12406f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (U_FAILURE(status) || !getTimeZone().useDaylightTime()) 12416f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return FALSE; 12426f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 12436f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // Force an update of the state of the Calendar. 12446f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org ((GregorianCalendar*)this)->complete(status); // cast away const 12456f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 12466f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return (UBool)(U_SUCCESS(status) ? (internalGet(UCAL_DST_OFFSET) != 0) : FALSE); 12476f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 12486f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 12496f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org// ------------------------------------- 12506f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 12516f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org/** 12526f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* Return the ERA. We need a special method for this because the 12536f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org* default ERA is AD, but a zero (unset) ERA is BC. 12546f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org*/ 12556f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgint32_t 12566f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::internalGetEra() const { 12576f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return isSet(UCAL_ERA) ? internalGet(UCAL_ERA) : (int32_t)AD; 12586f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 12596f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 12606f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgconst char * 12616f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgGregorianCalendar::getType() const { 12626f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org //static const char kGregorianType = "gregorian"; 12636f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 12646f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return "gregorian"; 12656f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 12666f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 12676f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org/** 12686f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * The system maintains a static default century start date and Year. They are 12696f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * initialized the first time they are used. Once the system default century date 12706f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org * and year are set, they do not change. 12716f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org */ 12726f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgstatic UDate gSystemDefaultCenturyStart = DBL_MIN; 12736f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgstatic int32_t gSystemDefaultCenturyStartYear = -1; 12746f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgstatic icu::UInitOnce gSystemDefaultCenturyInit = U_INITONCE_INITIALIZER; 12756f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 12766f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 12776f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgUBool GregorianCalendar::haveDefaultCentury() const 12786f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 12796f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return TRUE; 12806f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 12816f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 12826f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgstatic void U_CALLCONV 12836f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orginitializeSystemDefaultCentury() 12846f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org{ 12856f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // initialize systemDefaultCentury and systemDefaultCenturyYear based 12866f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // on the current time. They'll be set to 80 years before 12876f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // the current time. 12886f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org UErrorCode status = U_ZERO_ERROR; 12896f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org GregorianCalendar calendar(status); 12906f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org if (U_SUCCESS(status)) { 12916f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org calendar.setTime(Calendar::getNow(), status); 12926f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org calendar.add(UCAL_YEAR, -80, status); 12936f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 12946f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org gSystemDefaultCenturyStart = calendar.getTime(status); 12956f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org gSystemDefaultCenturyStartYear = calendar.get(UCAL_YEAR, status); 12966f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org } 12976f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // We have no recourse upon failure unless we want to propagate the failure 12986f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // out. 12996f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 13006f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 13016f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgUDate GregorianCalendar::defaultCenturyStart() const { 13026f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // lazy-evaluate systemDefaultCenturyStart 13036f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury); 13046f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return gSystemDefaultCenturyStart; 13056f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 13066f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 13076f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgint32_t GregorianCalendar::defaultCenturyStartYear() const { 13086f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org // lazy-evaluate systemDefaultCenturyStartYear 13096f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury); 13106f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org return gSystemDefaultCenturyStartYear; 13116f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org} 13126f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 13136f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.orgU_NAMESPACE_END 13146f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 13156f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org#endif /* #if !UCONFIG_NO_FORMATTING */ 13166f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org 13176f31ac30b9092fd02a8c97e5216cf53f3e4fae4jshin@chromium.org//eof 1318