Index: icu46/source/i18n/indiancal.h |
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--- icu46/source/i18n/indiancal.h (revision 0) |
+++ icu46/source/i18n/indiancal.h (revision 0) |
@@ -0,0 +1,372 @@ |
+/* |
+ ***************************************************************************** |
+ * Copyright (C) 2003-2008, International Business Machines Corporation |
+ * and others. All Rights Reserved. |
+ ***************************************************************************** |
+ * |
+ * File INDIANCAL.H |
+ ***************************************************************************** |
+ */ |
+ |
+#ifndef INDIANCAL_H |
+#define INDIANCAL_H |
+ |
+#include "unicode/utypes.h" |
+ |
+#if !UCONFIG_NO_FORMATTING |
+ |
+#include "unicode/calendar.h" |
+ |
+U_NAMESPACE_BEGIN |
+ |
+/** |
+ * Concrete class which provides the Indian calendar. |
+ * <P> |
+ * <code>IndianCalendar</code> is a subclass of <code>Calendar</code> |
+ * that numbers years since the begining of SAKA ERA. This is the civil calendar |
+ * which is accepted by government of India as Indian National Calendar. |
+ * The two calendars most widely used in India today are the Vikrama calendar |
+ * followed in North India and the Shalivahana or Saka calendar which is followed |
+ * in South India and Maharashtra. |
+ |
+ * A variant of the Shalivahana Calendar was reformed and standardized as the |
+ * Indian National calendar in 1957. |
+ * <p> |
+ * Some details of Indian National Calendar (to be implemented) : |
+ * The Months |
+ * Month Length Start date (Gregorian) |
+ * ================================================= |
+ * 1 Chaitra 30/31 March 22* |
+ * 2 Vaisakha 31 April 21 |
+ * 3 Jyaistha 31 May 22 |
+ * 4 Asadha 31 June 22 |
+ * 5 Sravana 31 July 23 |
+ * 6 Bhadra 31 August 23 |
+ * 7 Asvina 30 September 23 |
+ * 8 Kartika 30 October 23 |
+ * 9 Agrahayana 30 November 22 |
+ * 10 Pausa 30 December 22 |
+ * 11 Magha 30 January 21 |
+ * 12 Phalguna 30 February 20 |
+ |
+ * In leap years, Chaitra has 31 days and starts on March 21 instead. |
+ * The leap years of Gregorian calendar and Indian National Calendar are in synchornization. |
+ * So When its a leap year in Gregorian calendar then Chaitra has 31 days. |
+ * |
+ * The Years |
+ * Years are counted in the Saka Era, which starts its year 0 in 78AD (by gregorian calendar). |
+ * So for eg. 9th June 2006 by Gregorian Calendar, is same as 19th of Jyaistha in 1928 of Saka |
+ * era by Indian National Calendar. |
+ * <p> |
+ * The Indian Calendar has only one allowable era: <code>Saka Era</code>. If the |
+ * calendar is not in lenient mode (see <code>setLenient</code>), dates before |
+ * 1/1/1 Saka Era are rejected with an <code>IllegalArgumentException</code>. |
+ * <p> |
+ * @internal |
+ */ |
+ |
+ |
+class IndianCalendar : public Calendar { |
+public: |
+ /** |
+ * Useful constants for IndianCalendar. |
+ * @internal |
+ */ |
+ enum EEras { |
+ /** |
+ * Constant for Chaitra, the 1st month of the Indian year. |
+ */ |
+ CHAITRA, |
+ |
+ /** |
+ * Constant for Vaisakha, the 2nd month of the Indian year. |
+ */ |
+ VAISAKHA, |
+ |
+ /** |
+ * Constant for Jyaistha, the 3rd month of the Indian year. |
+ */ |
+ JYAISTHA, |
+ |
+ /** |
+ * Constant for Asadha, the 4th month of the Indian year. |
+ */ |
+ ASADHA, |
+ |
+ /** |
+ * Constant for Sravana, the 5th month of the Indian year. |
+ */ |
+ SRAVANA, |
+ |
+ /** |
+ * Constant for Bhadra the 6th month of the Indian year |
+ */ |
+ BHADRA, |
+ |
+ /** |
+ * Constant for the Asvina, the 7th month of the Indian year. |
+ */ |
+ ASVINA, |
+ |
+ /** |
+ * Constant for Kartika, the 8th month of the Indian year. |
+ */ |
+ KARTIKA, |
+ |
+ /** |
+ * Constant for Agrahayana, the 9th month of the Indian year. |
+ */ |
+ AGRAHAYANA, |
+ |
+ /** |
+ * Constant for Pausa, the 10th month of the Indian year. |
+ */ |
+ PAUSA, |
+ |
+ /** |
+ * Constant for Magha, the 11th month of the Indian year. |
+ */ |
+ MAGHA, |
+ |
+ /** |
+ * Constant for Phalguna, the 12th month of the Indian year. |
+ */ |
+ PHALGUNA |
+ }; |
+ |
+ //------------------------------------------------------------------------- |
+ // Constructors... |
+ //------------------------------------------------------------------------- |
+ |
+ /** |
+ * Constructs an IndianCalendar based on the current time in the default time zone |
+ * with the given locale. |
+ * |
+ * @param aLocale The given locale. |
+ * @param success Indicates the status of IndianCalendar object construction. |
+ * Returns U_ZERO_ERROR if constructed successfully. |
+ * @param beCivil Whether the calendar should be civil (default-TRUE) or religious (FALSE) |
+ * @internal |
+ */ |
+ IndianCalendar(const Locale& aLocale, UErrorCode &success); |
+ |
+ /** |
+ * Copy Constructor |
+ * @internal |
+ */ |
+ IndianCalendar(const IndianCalendar& other); |
+ |
+ /** |
+ * Destructor. |
+ * @internal |
+ */ |
+ virtual ~IndianCalendar(); |
+ |
+ /** |
+ * Determines whether this object uses the fixed-cycle Indian civil calendar |
+ * or an approximation of the religious, astronomical calendar. |
+ * |
+ * @param beCivil <code>CIVIL</code> to use the civil calendar, |
+ * <code>ASTRONOMICAL</code> to use the astronomical calendar. |
+ * @internal |
+ */ |
+ //void setCivil(ECivil beCivil, UErrorCode &status); |
+ |
+ /** |
+ * Returns <code>true</code> if this object is using the fixed-cycle civil |
+ * calendar, or <code>false</code> if using the religious, astronomical |
+ * calendar. |
+ * @internal |
+ */ |
+ //UBool isCivil(); |
+ |
+ |
+ // TODO: copy c'tor, etc |
+ |
+ // clone |
+ virtual Calendar* clone() const; |
+ |
+ private: |
+ /** |
+ * Determine whether a year is the gregorian year a leap year |
+ */ |
+ //static UBool isGregorianLeap(int32_t year); |
+ //---------------------------------------------------------------------- |
+ // Calendar framework |
+ //---------------------------------------------------------------------- |
+ protected: |
+ /** |
+ * @internal |
+ */ |
+ virtual int32_t handleGetLimit(UCalendarDateFields field, ELimitType limitType) const; |
+ |
+ /** |
+ * Return the length (in days) of the given month. |
+ * |
+ * @param year The year in Saka era |
+ * @param year The month(0-based) in Indian year |
+ * @internal |
+ */ |
+ virtual int32_t handleGetMonthLength(int32_t extendedYear, int32_t month) const; |
+ |
+ /** |
+ * Return the number of days in the given Indian year |
+ * @internal |
+ */ |
+ virtual int32_t handleGetYearLength(int32_t extendedYear) const; |
+ |
+ //------------------------------------------------------------------------- |
+ // Functions for converting from field values to milliseconds.... |
+ //------------------------------------------------------------------------- |
+ |
+ // Return JD of start of given month/year |
+ /** |
+ * @internal |
+ */ |
+ virtual int32_t handleComputeMonthStart(int32_t eyear, int32_t month, UBool useMonth) const; |
+ |
+ //------------------------------------------------------------------------- |
+ // Functions for converting from milliseconds to field values |
+ //------------------------------------------------------------------------- |
+ |
+ /** |
+ * @internal |
+ */ |
+ virtual int32_t handleGetExtendedYear(); |
+ |
+ /** |
+ * Override Calendar to compute several fields specific to the Indian |
+ * calendar system. These are: |
+ * |
+ * <ul><li>ERA |
+ * <li>YEAR |
+ * <li>MONTH |
+ * <li>DAY_OF_MONTH |
+ * <li>DAY_OF_YEAR |
+ * <li>EXTENDED_YEAR</ul> |
+ * |
+ * The DAY_OF_WEEK and DOW_LOCAL fields are already set when this |
+ * method is called. The getGregorianXxx() methods return Gregorian |
+ * calendar equivalents for the given Julian day. |
+ * @internal |
+ */ |
+ virtual void handleComputeFields(int32_t julianDay, UErrorCode &status); |
+ |
+ // UObject stuff |
+ public: |
+ /** |
+ * @return The class ID for this object. All objects of a given class have the |
+ * same class ID. Objects of other classes have different class IDs. |
+ * @internal |
+ */ |
+ virtual UClassID getDynamicClassID(void) const; |
+ |
+ /** |
+ * Return the class ID for this class. This is useful only for comparing to a return |
+ * value from getDynamicClassID(). For example: |
+ * |
+ * Base* polymorphic_pointer = createPolymorphicObject(); |
+ * if (polymorphic_pointer->getDynamicClassID() == |
+ * Derived::getStaticClassID()) ... |
+ * |
+ * @return The class ID for all objects of this class. |
+ * @internal |
+ */ |
+ U_I18N_API static UClassID U_EXPORT2 getStaticClassID(void); |
+ |
+ /** |
+ * return the calendar type, "buddhist". |
+ * |
+ * @return calendar type |
+ * @internal |
+ */ |
+ virtual const char * getType() const; |
+ |
+private: |
+ IndianCalendar(); // default constructor not implemented |
+ |
+ // Default century. |
+protected: |
+ |
+ /** |
+ * (Overrides Calendar) Return true if the current date for this Calendar is in |
+ * Daylight Savings Time. Recognizes DST_OFFSET, if it is set. |
+ * |
+ * @param status Fill-in parameter which receives the status of this operation. |
+ * @return True if the current date for this Calendar is in Daylight Savings Time, |
+ * false, otherwise. |
+ * @internal |
+ */ |
+ virtual UBool inDaylightTime(UErrorCode& status) const; |
+ |
+ |
+ /** |
+ * Returns TRUE because the Indian Calendar does have a default century |
+ * @internal |
+ */ |
+ virtual UBool haveDefaultCentury() const; |
+ |
+ /** |
+ * Returns the date of the start of the default century |
+ * @return start of century - in milliseconds since epoch, 1970 |
+ * @internal |
+ */ |
+ virtual UDate defaultCenturyStart() const; |
+ |
+ /** |
+ * Returns the year in which the default century begins |
+ * @internal |
+ */ |
+ virtual int32_t defaultCenturyStartYear() const; |
+ |
+ private: // default century stuff. |
+ /** |
+ * The system maintains a static default century start date. This is initialized |
+ * the first time it is used. Before then, it is set to SYSTEM_DEFAULT_CENTURY to |
+ * indicate an uninitialized state. Once the system default century date and year |
+ * are set, they do not change. |
+ */ |
+ static UDate fgSystemDefaultCenturyStart; |
+ |
+ /** |
+ * See documentation for systemDefaultCenturyStart. |
+ */ |
+ static int32_t fgSystemDefaultCenturyStartYear; |
+ |
+ /** |
+ * Default value that indicates the defaultCenturyStartYear is unitialized |
+ */ |
+ static const int32_t fgSystemDefaultCenturyYear; |
+ |
+ /** |
+ * start of default century, as a date |
+ */ |
+ static const UDate fgSystemDefaultCentury; |
+ |
+ /** |
+ * Returns the beginning date of the 100-year window that dates |
+ * with 2-digit years are considered to fall within. |
+ */ |
+ UDate internalGetDefaultCenturyStart(void) const; |
+ |
+ /** |
+ * Returns the first year of the 100-year window that dates with |
+ * 2-digit years are considered to fall within. |
+ */ |
+ int32_t internalGetDefaultCenturyStartYear(void) const; |
+ |
+ /** |
+ * Initializes the 100-year window that dates with 2-digit years |
+ * are considered to fall within so that its start date is 80 years |
+ * before the current time. |
+ */ |
+ static void initializeSystemDefaultCentury(void); |
+}; |
+ |
+U_NAMESPACE_END |
+ |
+#endif |
+#endif |
+ |
+ |
+ |
Property changes on: icu46/source/i18n/indiancal.h |
___________________________________________________________________ |
Added: svn:eol-style |
+ LF |