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| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
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| * http://www.apache.org/licenses/LICENSE-2.0 |
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| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| *************************************************************/ |
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| |
| |
| // MARKER(update_precomp.py): autogen include statement, do not remove |
| #include "precompiled_i18npool.hxx" |
| |
| #include <math.h> |
| #include <stdio.h> |
| |
| #include "calendar_jewish.hxx" |
| |
| using namespace ::com::sun::star::uno; |
| using namespace ::com::sun::star::lang; |
| using namespace ::com::sun::star::i18n; |
| using namespace ::rtl; |
| |
| #define ERROR RuntimeException() |
| |
| // not used |
| //static UErrorCode status; // status is shared in all calls to Calendar, it has to be reset for each call. |
| |
| Calendar_jewish::Calendar_jewish() |
| { |
| cCalendar = "com.sun.star.i18n.Calendar_jewish"; |
| } |
| |
| // The following C++ code is translated from the Lisp code in |
| // ``Calendrical Calculations'' by Nachum Dershowitz and Edward M. Reingold, |
| // Software---Practice & Experience, vol. 20, no. 9 (September, 1990), |
| // pp. 899--928. |
| |
| // This code is in the public domain, but any use of it |
| // should acknowledge its source. |
| // http://www.ntu.edu.sg/home/ayxyan/date1.txt |
| |
| // Hebrew dates |
| |
| const int HebrewEpoch = -1373429; // Absolute date of start of Hebrew calendar |
| |
| // True if year is an Hebrew leap year |
| sal_Bool HebrewLeapYear(sal_Int32 year) { |
| return ((((7 * year) + 1) % 19) < 7); |
| } |
| |
| // Last month of Hebrew year. |
| sal_Int32 LastMonthOfHebrewYear(sal_Int32 year) { |
| return (HebrewLeapYear(year)) ? 13 : 12; |
| } |
| |
| // Number of days elapsed from the Sunday prior to the start of the |
| // Hebrew calendar to the mean conjunction of Tishri of Hebrew year. |
| sal_Int32 HebrewCalendarElapsedDays(sal_Int32 year) { |
| sal_Int32 MonthsElapsed = |
| (235 * ((year - 1) / 19)) // Months in complete cycles so far. |
| + (12 * ((year - 1) % 19)) // Regular months in this cycle. |
| + (7 * ((year - 1) % 19) + 1) / 19; // Leap months this cycle |
| sal_Int32 PartsElapsed = 204 + 793 * (MonthsElapsed % 1080); |
| int HoursElapsed = |
| 5 + 12 * MonthsElapsed + 793 * (MonthsElapsed / 1080) |
| + PartsElapsed / 1080; |
| sal_Int32 ConjunctionDay = 1 + 29 * MonthsElapsed + HoursElapsed / 24; |
| sal_Int32 ConjunctionParts = 1080 * (HoursElapsed % 24) + PartsElapsed % 1080; |
| sal_Int32 AlternativeDay; |
| |
| if ((ConjunctionParts >= 19440) // If new moon is at or after midday, |
| || (((ConjunctionDay % 7) == 2) // ...or is on a Tuesday... |
| && (ConjunctionParts >= 9924) // at 9 hours, 204 parts or later... |
| && !(HebrewLeapYear(year))) // ...of a common year, |
| || (((ConjunctionDay % 7) == 1) // ...or is on a Monday at... |
| && (ConjunctionParts >= 16789) // 15 hours, 589 parts or later... |
| && (HebrewLeapYear(year - 1))))// at the end of a leap year |
| // Then postpone Rosh HaShanah one day |
| AlternativeDay = ConjunctionDay + 1; |
| else |
| AlternativeDay = ConjunctionDay; |
| |
| if (((AlternativeDay % 7) == 0)// If Rosh HaShanah would occur on Sunday, |
| || ((AlternativeDay % 7) == 3) // or Wednesday, |
| || ((AlternativeDay % 7) == 5)) // or Friday |
| // Then postpone it one (more) day |
| return (1+ AlternativeDay); |
| else |
| return AlternativeDay; |
| } |
| |
| // Number of days in Hebrew year. |
| sal_Int32 DaysInHebrewYear(sal_Int32 year) { |
| return ((HebrewCalendarElapsedDays(year + 1)) - |
| (HebrewCalendarElapsedDays(year))); |
| } |
| |
| // True if Heshvan is long in Hebrew year. |
| sal_Bool LongHeshvan(sal_Int32 year) { |
| return ((DaysInHebrewYear(year) % 10) == 5); |
| } |
| |
| // True if Kislev is short in Hebrew year. |
| sal_Bool ShortKislev(sal_Int32 year) { |
| return ((DaysInHebrewYear(year) % 10) == 3); |
| } |
| |
| // Last day of month in Hebrew year. |
| sal_Int32 LastDayOfHebrewMonth(sal_Int32 month, sal_Int32 year) { |
| if ((month == 2) |
| || (month == 4) |
| || (month == 6) |
| || ((month == 8) && !(LongHeshvan(year))) |
| || ((month == 9) && ShortKislev(year)) |
| || (month == 10) |
| || ((month == 12) && !(HebrewLeapYear(year))) |
| || (month == 13)) |
| return 29; |
| else |
| return 30; |
| } |
| |
| |
| class HebrewDate { |
| private: |
| sal_Int32 year; // 1... |
| sal_Int32 month; // 1..LastMonthOfHebrewYear(year) |
| sal_Int32 day; // 1..LastDayOfHebrewMonth(month, year) |
| |
| public: |
| HebrewDate(sal_Int32 m, sal_Int32 d, sal_Int32 y) { month = m; day = d; year = y; } |
| |
| HebrewDate(sal_Int32 d) { // Computes the Hebrew date from the absolute date. |
| year = (d + HebrewEpoch) / 366; // Approximation from below. |
| // Search forward for year from the approximation. |
| while (d >= HebrewDate(7,1,year + 1)) |
| year++; |
| // Search forward for month from either Tishri or Nisan. |
| if (d < HebrewDate(1, 1, year)) |
| month = 7; // Start at Tishri |
| else |
| month = 1; // Start at Nisan |
| while (d > HebrewDate(month, (LastDayOfHebrewMonth(month,year)), year)) |
| month++; |
| // Calculate the day by subtraction. |
| day = d - HebrewDate(month, 1, year) + 1; |
| } |
| |
| operator int() { // Computes the absolute date of Hebrew date. |
| sal_Int32 DayInYear = day; // Days so far this month. |
| if (month < 7) { // Before Tishri, so add days in prior months |
| // this year before and after Nisan. |
| sal_Int32 m = 7; |
| while (m <= (LastMonthOfHebrewYear(year))) { |
| DayInYear = DayInYear + LastDayOfHebrewMonth(m, year); |
| m++; |
| }; |
| m = 1; |
| while (m < month) { |
| DayInYear = DayInYear + LastDayOfHebrewMonth(m, year); |
| m++; |
| } |
| } |
| else { // Add days in prior months this year |
| sal_Int32 m = 7; |
| while (m < month) { |
| DayInYear = DayInYear + LastDayOfHebrewMonth(m, year); |
| m++; |
| } |
| } |
| return (DayInYear + |
| (HebrewCalendarElapsedDays(year)// Days in prior years. |
| + HebrewEpoch)); // Days elapsed before absolute date 1. |
| } |
| |
| sal_Int32 GetMonth() { return month; } |
| sal_Int32 GetDay() { return day; } |
| sal_Int32 GetYear() { return year; } |
| |
| }; |
| |
| // Gregorian dates |
| |
| int LastDayOfGregorianMonth(int month, int year) { |
| // Compute the last date of the month for the Gregorian calendar. |
| |
| switch (month) { |
| case 2: |
| if ((((year % 4) == 0) && ((year % 100) != 0)) |
| || ((year % 400) == 0)) |
| return 29; |
| else |
| return 28; |
| case 4: |
| case 6: |
| case 9: |
| case 11: return 30; |
| default: return 31; |
| } |
| } |
| |
| class GregorianDate { |
| private: |
| int year; // 1... |
| int month; // 1 == January, ..., 12 == December |
| int day; // 1..LastDayOfGregorianMonth(month, year) |
| |
| public: |
| GregorianDate(int m, int d, int y) { month = m; day = d; year = y; } |
| |
| GregorianDate(int d) { // Computes the Gregorian date from the absolute date. |
| // Search forward year by year from approximate year |
| year = d/366; |
| while (d >= GregorianDate(1,1,year+1)) |
| year++; |
| // Search forward month by month from January |
| month = 1; |
| while (d > GregorianDate(month, LastDayOfGregorianMonth(month,year), year)) |
| month++; |
| day = d - GregorianDate(month,1,year) + 1; |
| } |
| |
| operator int() { // Computes the absolute date from the Gregorian date. |
| int N = day; // days this month |
| for (int m = month - 1; m > 0; m--) // days in prior months this year |
| N = N + LastDayOfGregorianMonth(m, year); |
| return |
| (N // days this year |
| + 365 * (year - 1) // days in previous years ignoring leap days |
| + (year - 1)/4 // Julian leap days before this year... |
| - (year - 1)/100 // ...minus prior century years... |
| + (year - 1)/400); // ...plus prior years divisible by 400 |
| } |
| |
| int GetMonth() { return month; } |
| int GetDay() { return day; } |
| int GetYear() { return year; } |
| |
| }; |
| |
| // map field value from gregorian calendar to other calendar, it can be overwritten by derived class. |
| void Calendar_jewish::mapFromGregorian() throw(RuntimeException) |
| { |
| int y = fieldValue[CalendarFieldIndex::YEAR]; |
| if (fieldValue[CalendarFieldIndex::ERA] == 0) |
| y = 1 - y; |
| GregorianDate Temp(fieldValue[CalendarFieldIndex::MONTH] + 1, fieldValue[CalendarFieldIndex::DAY_OF_MONTH], y); |
| HebrewDate hd(Temp); |
| |
| fieldValue[CalendarFieldIndex::ERA] = hd.GetYear() <= 0 ? 0 : 1; |
| fieldValue[CalendarFieldIndex::MONTH] = sal::static_int_cast<sal_Int16>( hd.GetMonth() - 1 ); |
| fieldValue[CalendarFieldIndex::DAY_OF_MONTH] = (sal_Int16)hd.GetDay(); |
| fieldValue[CalendarFieldIndex::YEAR] = (sal_Int16)(hd.GetYear() <= 0 ? 1 - hd.GetYear() : hd.GetYear()); |
| } |
| |
| #define FIELDS ((1 << CalendarFieldIndex::ERA) | (1 << CalendarFieldIndex::YEAR) | (1 << CalendarFieldIndex::MONTH) | (1 << CalendarFieldIndex::DAY_OF_MONTH)) |
| // map field value from other calendar to gregorian calendar, it should be implemented. |
| void Calendar_jewish::mapToGregorian() throw(RuntimeException) |
| { |
| if (fieldSet & FIELDS) { |
| sal_Int16 y = fieldSetValue[CalendarFieldIndex::YEAR]; |
| if (fieldSetValue[CalendarFieldIndex::ERA] == 0) |
| y = 1 - y; |
| HebrewDate Temp(fieldSetValue[CalendarFieldIndex::MONTH] + 1, fieldSetValue[CalendarFieldIndex::DAY_OF_MONTH], y); |
| GregorianDate gd(Temp); |
| |
| fieldSetValue[CalendarFieldIndex::ERA] = gd.GetYear() <= 0 ? 0 : 1; |
| fieldSetValue[CalendarFieldIndex::MONTH] = sal::static_int_cast<sal_Int16>( gd.GetMonth() - 1 ); |
| fieldSetValue[CalendarFieldIndex::DAY_OF_MONTH] = (sal_Int16)gd.GetDay(); |
| fieldSetValue[CalendarFieldIndex::YEAR] = (sal_Int16)(gd.GetYear() <= 0 ? 1 - gd.GetYear() : gd.GetYear()); |
| fieldSet |= FIELDS; |
| } |
| } |
| |
| // Methods in XExtendedCalendar |
| OUString SAL_CALL |
| Calendar_jewish::getDisplayString( sal_Int32 nCalendarDisplayCode, sal_Int16 nNativeNumberMode ) |
| throw (RuntimeException) |
| { |
| nNativeNumberMode = NativeNumberMode::NATNUM2; // make Hebrew number for Jewish calendar |
| |
| if (nCalendarDisplayCode == CalendarDisplayCode::SHORT_YEAR) { |
| sal_Int32 value = getValue(CalendarFieldIndex::YEAR) % 1000; // take last 3 digits |
| return aNatNum.getNativeNumberString(OUString::valueOf(value), aLocale, nNativeNumberMode ); |
| } |
| else |
| return Calendar_gregorian::getDisplayString(nCalendarDisplayCode, nNativeNumberMode ); |
| } |