Victor Chang | 7322950 | 2020-09-17 13:39:19 +0100 | [diff] [blame] | 1 | // © 2016 and later: Unicode, Inc. and others. |
| 2 | // License & terms of use: http://www.unicode.org/copyright.html |
| 3 | /* |
| 4 | ******************************************************************************* |
| 5 | * Copyright (C) 2003 - 2013, International Business Machines Corporation and * |
| 6 | * others. All Rights Reserved. * |
| 7 | ******************************************************************************* |
| 8 | */ |
| 9 | |
| 10 | #ifndef ETHPCCAL_H |
| 11 | #define ETHPCCAL_H |
| 12 | |
| 13 | #include "unicode/utypes.h" |
| 14 | |
| 15 | #if !UCONFIG_NO_FORMATTING |
| 16 | |
| 17 | #include "unicode/calendar.h" |
| 18 | #include "cecal.h" |
| 19 | |
| 20 | U_NAMESPACE_BEGIN |
| 21 | |
| 22 | /** |
| 23 | * Implement the Ethiopic calendar system. |
| 24 | * @internal |
| 25 | */ |
| 26 | class EthiopicCalendar : public CECalendar { |
| 27 | |
| 28 | public: |
| 29 | /** |
| 30 | * Calendar type - use Amete Alem era for all the time or not |
| 31 | * @internal |
| 32 | */ |
| 33 | enum EEraType { |
| 34 | AMETE_MIHRET_ERA, |
| 35 | AMETE_ALEM_ERA |
| 36 | }; |
| 37 | |
| 38 | /** |
| 39 | * Useful constants for EthiopicCalendar. |
| 40 | * @internal |
| 41 | */ |
| 42 | enum EMonths { |
| 43 | /** |
| 44 | * Constant for መስከረም, the 1st month of the Ethiopic year. |
| 45 | */ |
| 46 | MESKEREM, |
| 47 | |
| 48 | /** |
| 49 | * Constant for ጥቅምት, the 2nd month of the Ethiopic year. |
| 50 | */ |
| 51 | TEKEMT, |
| 52 | |
| 53 | /** |
| 54 | * Constant for ኅዳር, the 3rd month of the Ethiopic year. |
| 55 | */ |
| 56 | HEDAR, |
| 57 | |
| 58 | /** |
| 59 | * Constant for ታኅሣሥ, the 4th month of the Ethiopic year. |
| 60 | */ |
| 61 | TAHSAS, |
| 62 | |
| 63 | /** |
| 64 | * Constant for ጥር, the 5th month of the Ethiopic year. |
| 65 | */ |
| 66 | TER, |
| 67 | |
| 68 | /** |
| 69 | * Constant for የካቲት, the 6th month of the Ethiopic year. |
| 70 | */ |
| 71 | YEKATIT, |
| 72 | |
| 73 | /** |
| 74 | * Constant for መጋቢት, the 7th month of the Ethiopic year. |
| 75 | */ |
| 76 | MEGABIT, |
| 77 | |
| 78 | /** |
| 79 | * Constant for ሚያዝያ, the 8th month of the Ethiopic year. |
| 80 | */ |
| 81 | MIAZIA, |
| 82 | |
| 83 | /** |
| 84 | * Constant for ግንቦት, the 9th month of the Ethiopic year. |
| 85 | */ |
| 86 | GENBOT, |
| 87 | |
| 88 | /** |
| 89 | * Constant for ሰኔ, the 10th month of the Ethiopic year. |
| 90 | */ |
| 91 | SENE, |
| 92 | |
| 93 | /** |
| 94 | * Constant for ሐምሌ, the 11th month of the Ethiopic year. |
| 95 | */ |
| 96 | HAMLE, |
| 97 | |
| 98 | /** |
| 99 | * Constant for ነሐሴ, the 12th month of the Ethiopic year. |
| 100 | */ |
| 101 | NEHASSA, |
| 102 | |
| 103 | /** |
| 104 | * Constant for ጳጉሜን, the 13th month of the Ethiopic year. |
| 105 | */ |
| 106 | PAGUMEN |
| 107 | }; |
| 108 | |
| 109 | enum EEras { |
| 110 | AMETE_ALEM, // Before the epoch |
| 111 | AMETE_MIHRET // After the epoch |
| 112 | }; |
| 113 | |
| 114 | /** |
| 115 | * Constructs a EthiopicCalendar based on the current time in the default time zone |
| 116 | * with the given locale. |
| 117 | * |
| 118 | * @param aLocale The given locale. |
| 119 | * @param success Indicates the status of EthiopicCalendar object construction. |
| 120 | * Returns U_ZERO_ERROR if constructed successfully. |
| 121 | * @param type Whether this Ethiopic calendar use Amete Mihrret (default) or |
| 122 | * only use Amete Alem for all the time. |
| 123 | * @internal |
| 124 | */ |
| 125 | EthiopicCalendar(const Locale& aLocale, UErrorCode& success, EEraType type = AMETE_MIHRET_ERA); |
| 126 | |
| 127 | /** |
| 128 | * Copy Constructor |
| 129 | * @internal |
| 130 | */ |
| 131 | EthiopicCalendar(const EthiopicCalendar& other); |
| 132 | |
| 133 | /** |
| 134 | * Destructor. |
| 135 | * @internal |
| 136 | */ |
| 137 | virtual ~EthiopicCalendar(); |
| 138 | |
| 139 | /** |
| 140 | * Create and return a polymorphic copy of this calendar. |
| 141 | * @return return a polymorphic copy of this calendar. |
| 142 | * @internal |
| 143 | */ |
| 144 | virtual EthiopicCalendar* clone() const; |
| 145 | |
| 146 | /** |
| 147 | * return the calendar type, "ethiopic" |
| 148 | * @return calendar type |
| 149 | * @internal |
| 150 | */ |
| 151 | virtual const char * getType() const; |
| 152 | |
| 153 | /** |
| 154 | * Set Alem or Mihret era. |
| 155 | * @param onOff Set Amete Alem era if true, otherwise set Amete Mihret era. |
| 156 | * @internal |
| 157 | */ |
| 158 | void setAmeteAlemEra (UBool onOff); |
| 159 | |
| 160 | /** |
| 161 | * Return true if this calendar is set to the Amete Alem era. |
| 162 | * @return true if set to the Amete Alem era. |
| 163 | * @internal |
| 164 | */ |
| 165 | UBool isAmeteAlemEra() const; |
| 166 | |
| 167 | protected: |
| 168 | //------------------------------------------------------------------------- |
| 169 | // Calendar framework |
| 170 | //------------------------------------------------------------------------- |
| 171 | |
| 172 | /** |
| 173 | * Return the extended year defined by the current fields. |
| 174 | * @internal |
| 175 | */ |
| 176 | virtual int32_t handleGetExtendedYear(); |
| 177 | |
| 178 | /** |
| 179 | * Compute fields from the JD |
| 180 | * @internal |
| 181 | */ |
| 182 | virtual void handleComputeFields(int32_t julianDay, UErrorCode &status); |
| 183 | |
| 184 | /** |
| 185 | * Calculate the limit for a specified type of limit and field |
| 186 | * @internal |
| 187 | */ |
| 188 | virtual int32_t handleGetLimit(UCalendarDateFields field, ELimitType limitType) const; |
| 189 | |
| 190 | /** |
| 191 | * Returns the date of the start of the default century |
| 192 | * @return start of century - in milliseconds since epoch, 1970 |
| 193 | * @internal |
| 194 | */ |
| 195 | virtual UDate defaultCenturyStart() const; |
| 196 | |
| 197 | /** |
| 198 | * Returns the year in which the default century begins |
| 199 | * @internal |
| 200 | */ |
| 201 | virtual int32_t defaultCenturyStartYear() const; |
| 202 | |
| 203 | /** |
| 204 | * Return the date offset from Julian |
| 205 | * @internal |
| 206 | */ |
| 207 | virtual int32_t getJDEpochOffset() const; |
| 208 | |
| 209 | private: |
| 210 | /** |
| 211 | * When eraType is AMETE_ALEM_ERA, then this calendar use only AMETE_ALEM |
| 212 | * for the era. Otherwise (default), this calendar uses both AMETE_ALEM |
| 213 | * and AMETE_MIHRET. |
| 214 | * |
| 215 | * EXTENDED_YEAR AMETE_ALEM_ERA AMETE_MIHRET_ERA |
| 216 | * 0 Amete Alem 5500 Amete Alem 5500 |
| 217 | * 1 Amete Mihret 1 Amete Alem 5501 |
| 218 | */ |
| 219 | EEraType eraType; |
| 220 | |
| 221 | public: |
| 222 | /** |
| 223 | * Override Calendar Returns a unique class ID POLYMORPHICALLY. Pure virtual |
| 224 | * override. This method is to implement a simple version of RTTI, since not all C++ |
| 225 | * compilers support genuine RTTI. Polymorphic operator==() and clone() methods call |
| 226 | * this method. |
| 227 | * |
| 228 | * @return The class ID for this object. All objects of a given class have the |
| 229 | * same class ID. Objects of other classes have different class IDs. |
| 230 | * @internal |
| 231 | */ |
| 232 | virtual UClassID getDynamicClassID(void) const; |
| 233 | |
| 234 | /** |
| 235 | * Return the class ID for this class. This is useful only for comparing to a return |
| 236 | * value from getDynamicClassID(). For example: |
| 237 | * |
| 238 | * Base* polymorphic_pointer = createPolymorphicObject(); |
| 239 | * if (polymorphic_pointer->getDynamicClassID() == |
| 240 | * Derived::getStaticClassID()) ... |
| 241 | * |
| 242 | * @return The class ID for all objects of this class. |
| 243 | * @internal |
| 244 | */ |
| 245 | U_I18N_API static UClassID U_EXPORT2 getStaticClassID(void); |
| 246 | |
| 247 | #if 0 |
| 248 | // We do not want to introduce this API in ICU4C. |
| 249 | // It was accidentally introduced in ICU4J as a public API. |
| 250 | |
| 251 | public: |
| 252 | //------------------------------------------------------------------------- |
| 253 | // Calendar system Conversion methods... |
| 254 | //------------------------------------------------------------------------- |
| 255 | |
| 256 | /** |
| 257 | * Convert an Ethiopic year, month, and day to a Julian day. |
| 258 | * |
| 259 | * @param year the extended year |
| 260 | * @param month the month |
| 261 | * @param day the day |
| 262 | * @return Julian day |
| 263 | * @internal |
| 264 | */ |
| 265 | int32_t ethiopicToJD(int32_t year, int32_t month, int32_t day); |
| 266 | #endif |
| 267 | }; |
| 268 | |
| 269 | U_NAMESPACE_END |
| 270 | #endif /* #if !UCONFIG_NO_FORMATTING */ |
| 271 | #endif /* ETHPCCAL_H */ |
| 272 | //eof |