Check in the pristine copy of ICU 4.6...

icu46/source/i18n/ethpccal.h

+/*
+*******************************************************************************
+* Copyright (C) 2003 - 2008, International Business Machines Corporation and  *
+* others. All Rights Reserved.                                                *
+*******************************************************************************
+*/
+
+#ifndef ETHPCCAL_H
+#define ETHPCCAL_H
+
+#include "unicode/utypes.h"
+
+#if !UCONFIG_NO_FORMATTING
+
+#include "unicode/calendar.h"
+#include "cecal.h"
+
+U_NAMESPACE_BEGIN
+
+/**
+ * Implement the Ethiopic calendar system.
+ * @internal
+ */
+class EthiopicCalendar : public CECalendar {
+
+public:
+    /**
+     * Calendar type - use Amete Alem era for all the time or not
+     * @internal 
+     */
+    enum EEraType {
+        AMETE_MIHRET_ERA,
+        AMETE_ALEM_ERA
+    };
+
+    /**
+     * Useful constants for EthiopicCalendar.
+     * @internal
+     */
+    enum EMonths {
+        /** 
+         * Constant for መስከረም, the 1st month of the Ethiopic year.
+         */
+        MESKEREM,
+
+        /** 
+         * Constant for ጥቅምት, the 2nd month of the Ethiopic year.
+         */
+        TEKEMT,
+
+        /** 
+         * Constant for ኅዳር, the 3rd month of the Ethiopic year. 
+         */
+        HEDAR,
+
+        /** 
+         * Constant for ታኅሣሥ, the 4th month of the Ethiopic year. 
+         */
+        TAHSAS,
+
+        /** 
+         * Constant for ጥር, the 5th month of the Ethiopic year. 
+         */
+        TER,
+
+        /** 
+         * Constant for የካቲት, the 6th month of the Ethiopic year. 
+         */
+        YEKATIT,
+
+        /** 
+         * Constant for መጋቢት, the 7th month of the Ethiopic year. 
+         */
+        MEGABIT,
+
+        /** 
+         * Constant for ሚያዝያ, the 8th month of the Ethiopic year. 
+         */
+        MIAZIA,
+
+        /** 
+         * Constant for ግንቦት, the 9th month of the Ethiopic year. 
+         */
+        GENBOT,
+
+        /** 
+         * Constant for ሰኔ, the 10th month of the Ethiopic year. 
+         */
+        SENE,
+
+        /** 
+         * Constant for ሐምሌ, the 11th month of the Ethiopic year. 
+         */
+        HAMLE,
+
+        /** 
+         * Constant for ነሐሴ, the 12th month of the Ethiopic year. 
+         */
+        NEHASSA,
+
+        /** 
+         * Constant for ጳጉሜን, the 13th month of the Ethiopic year. 
+         */
+        PAGUMEN
+    };
+
+    enum EEras {
+        AMETE_ALEM,     // Before the epoch
+        AMETE_MIHRET    // After the epoch
+    };
+
+    /**
+     * Constructs a EthiopicCalendar 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 EthiopicCalendar object construction.
+     *                 Returns U_ZERO_ERROR if constructed successfully.
+     * @param type     Whether this Ethiopic calendar use Amete Mihrret (default) or
+     *                 only use Amete Alem for all the time.
+     * @internal
+     */
+    EthiopicCalendar(const Locale& aLocale, UErrorCode& success, EEraType type = AMETE_MIHRET_ERA);
+
+    /**
+     * Copy Constructor
+     * @internal
+     */
+    EthiopicCalendar(const EthiopicCalendar& other);
+
+    /**
+     * Destructor.
+     * @internal
+     */
+    virtual ~EthiopicCalendar();
+
+    /**
+     * Create and return a polymorphic copy of this calendar.
+     * @return    return a polymorphic copy of this calendar.
+     * @internal
+     */
+    virtual Calendar* clone() const;
+
+    /**
+     * return the calendar type, "ethiopic"
+     * @return calendar type
+     * @internal
+     */
+    virtual const char * getType() const;
+
+    /**
+     * Set Alem or Mihret era.
+     * @param onOff Set Amete Alem era if true, otherwise set Amete Mihret era.
+     * @internal
+     */
+    void setAmeteAlemEra (UBool onOff);
+
+    /**
+     * Return true if this calendar is set to the Amete Alem era.
+     * @return true if set to the Amete Alem era.
+     * @internal
+     */
+    UBool isAmeteAlemEra() const;
+
+protected:
+    //-------------------------------------------------------------------------
+    // Calendar framework
+    //-------------------------------------------------------------------------
+
+    /**
+     * Return the extended year defined by the current fields.
+     * @internal
+     */
+    virtual int32_t handleGetExtendedYear();
+
+    /**
+     * Compute fields from the JD
+     * @internal
+     */
+    virtual void handleComputeFields(int32_t julianDay, UErrorCode &status);
+
+    /**
+     * Calculate the limit for a specified type of limit and field
+     * @internal
+     */
+    virtual int32_t handleGetLimit(UCalendarDateFields field, ELimitType limitType) 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;
+
+    /**
+     * Return the date offset from Julian
+     * @internal
+     */
+    virtual int32_t getJDEpochOffset() const;
+
+private:
+    /**
+     * 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;
+ 
+    /**
+     * 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);
+
+    /**
+     * When eraType is AMETE_ALEM_ERA, then this calendar use only AMETE_ALEM
+     * for the era. Otherwise (default), this calendar uses both AMETE_ALEM
+     * and AMETE_MIHRET.
+     *
+     * EXTENDED_YEAR        AMETE_ALEM_ERA     AMETE_MIHRET_ERA
+     *             0       Amete Alem 5500      Amete Alem 5500
+     *             1        Amete Mihret 1      Amete Alem 5501
+     */
+    EEraType eraType;
+
+public:
+    /**
+     * Override Calendar Returns a unique class ID POLYMORPHICALLY. Pure virtual
+     * override. This method is to implement a simple version of RTTI, since not all C++
+     * compilers support genuine RTTI. Polymorphic operator==() and clone() methods call
+     * this method.
+     *
+     * @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);  
+
+#if 0
+// We do not want to introduce this API in ICU4C.
+// It was accidentally introduced in ICU4J as a public API.
+
+public:
+    //-------------------------------------------------------------------------
+    // Calendar system Conversion methods...
+    //-------------------------------------------------------------------------
+
+    /**
+     * Convert an Ethiopic year, month, and day to a Julian day.
+     *
+     * @param year the extended year
+     * @param month the month
+     * @param day the day
+     * @return Julian day
+     * @internal
+     */
+    int32_t ethiopicToJD(int32_t year, int32_t month, int32_t day);
+#endif
+};
+
+U_NAMESPACE_END
+#endif /* #if !UCONFIG_NO_FORMATTING */
+#endif /* ETHPCCAL_H */
+//eof