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comparison: intl/icu/source/i18n/buddhcal.cpp
intl/icu/source/i18n/buddhcal.cpp
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| 1 /* | |
| 2 ******************************************************************************* | |
| 3 * Copyright (C) 2003-2013, International Business Machines Corporation and * | |
| 4 * others. All Rights Reserved. * | |
| 5 ******************************************************************************* | |
| 6 * | |
| 7 * File BUDDHCAL.CPP | |
| 8 * | |
| 9 * Modification History: | |
| 10 * 05/13/2003 srl copied from gregocal.cpp | |
| 11 * | |
| 12 */ | |
| 13 | |
| 14 #include "unicode/utypes.h" | |
| 15 | |
| 16 #if !UCONFIG_NO_FORMATTING | |
| 17 | |
| 18 #include "buddhcal.h" | |
| 19 #include "unicode/gregocal.h" | |
| 20 #include "umutex.h" | |
| 21 #include <float.h> | |
| 22 | |
| 23 U_NAMESPACE_BEGIN | |
| 24 | |
| 25 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(BuddhistCalendar) | |
| 26 | |
| 27 //static const int32_t kMaxEra = 0; // only 1 era | |
| 28 | |
| 29 static const int32_t kBuddhistEraStart = -543; // 544 BC (Gregorian) | |
| 30 | |
| 31 static const int32_t kGregorianEpoch = 1970; // used as the default value of EXTENDED_YEAR | |
| 32 | |
| 33 BuddhistCalendar::BuddhistCalendar(const Locale& aLocale, UErrorCode& success) | |
| 34 : GregorianCalendar(aLocale, success) | |
| 35 { | |
| 36 setTimeInMillis(getNow(), success); // Call this again now that the vtable is set up properly. | |
| 37 } | |
| 38 | |
| 39 BuddhistCalendar::~BuddhistCalendar() | |
| 40 { | |
| 41 } | |
| 42 | |
| 43 BuddhistCalendar::BuddhistCalendar(const BuddhistCalendar& source) | |
| 44 : GregorianCalendar(source) | |
| 45 { | |
| 46 } | |
| 47 | |
| 48 BuddhistCalendar& BuddhistCalendar::operator= ( const BuddhistCalendar& right) | |
| 49 { | |
| 50 GregorianCalendar::operator=(right); | |
| 51 return *this; | |
| 52 } | |
| 53 | |
| 54 Calendar* BuddhistCalendar::clone(void) const | |
| 55 { | |
| 56 return new BuddhistCalendar(*this); | |
| 57 } | |
| 58 | |
| 59 const char *BuddhistCalendar::getType() const | |
| 60 { | |
| 61 return "buddhist"; | |
| 62 } | |
| 63 | |
| 64 int32_t BuddhistCalendar::handleGetExtendedYear() | |
| 65 { | |
| 66 // EXTENDED_YEAR in BuddhistCalendar is a Gregorian year. | |
| 67 // The default value of EXTENDED_YEAR is 1970 (Buddhist 2513) | |
| 68 int32_t year; | |
| 69 if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR) { | |
| 70 year = internalGet(UCAL_EXTENDED_YEAR, kGregorianEpoch); | |
| 71 } else { | |
| 72 // extended year is a gregorian year, where 1 = 1AD, 0 = 1BC, -1 = 2BC, etc | |
| 73 year = internalGet(UCAL_YEAR, kGregorianEpoch - kBuddhistEraStart) | |
| 74 + kBuddhistEraStart; | |
| 75 } | |
| 76 return year; | |
| 77 } | |
| 78 | |
| 79 int32_t BuddhistCalendar::handleComputeMonthStart(int32_t eyear, int32_t month, | |
| 80 | |
| 81 UBool useMonth) const | |
| 82 { | |
| 83 return GregorianCalendar::handleComputeMonthStart(eyear, month, useMonth); | |
| 84 } | |
| 85 | |
| 86 void BuddhistCalendar::handleComputeFields(int32_t julianDay, UErrorCode& status) | |
| 87 { | |
| 88 GregorianCalendar::handleComputeFields(julianDay, status); | |
| 89 int32_t y = internalGet(UCAL_EXTENDED_YEAR) - kBuddhistEraStart; | |
| 90 internalSet(UCAL_ERA, 0); | |
| 91 internalSet(UCAL_YEAR, y); | |
| 92 } | |
| 93 | |
| 94 int32_t BuddhistCalendar::handleGetLimit(UCalendarDateFields field, ELimitType limitType) const | |
| 95 { | |
| 96 if(field == UCAL_ERA) { | |
| 97 return BE; | |
| 98 } else { | |
| 99 return GregorianCalendar::handleGetLimit(field,limitType); | |
| 100 } | |
| 101 } | |
| 102 | |
| 103 #if 0 | |
| 104 void BuddhistCalendar::timeToFields(UDate theTime, UBool quick, UErrorCode& status) | |
| 105 { | |
| 106 //Calendar::timeToFields(theTime, quick, status); | |
| 107 | |
| 108 int32_t era = internalGet(UCAL_ERA); | |
| 109 int32_t year = internalGet(UCAL_YEAR); | |
| 110 | |
| 111 if(era == GregorianCalendar::BC) { | |
| 112 year = 1-year; | |
| 113 era = BuddhistCalendar::BE; | |
| 114 } else if(era == GregorianCalendar::AD) { | |
| 115 era = BuddhistCalendar::BE; | |
| 116 } else { | |
| 117 status = U_INTERNAL_PROGRAM_ERROR; | |
| 118 } | |
| 119 | |
| 120 year = year - kBuddhistEraStart; | |
| 121 | |
| 122 internalSet(UCAL_ERA, era); | |
| 123 internalSet(UCAL_YEAR, year); | |
| 124 } | |
| 125 #endif | |
| 126 | |
| 127 /** | |
| 128 * The system maintains a static default century start date. This is initialized | |
| 129 * the first time it is used. Once the system default century date and year | |
| 130 * are set, they do not change. | |
| 131 */ | |
| 132 static UDate gSystemDefaultCenturyStart = DBL_MIN; | |
| 133 static int32_t gSystemDefaultCenturyStartYear = -1; | |
| 134 static icu::UInitOnce gBCInitOnce; | |
| 135 | |
| 136 | |
| 137 UBool BuddhistCalendar::haveDefaultCentury() const | |
| 138 { | |
| 139 return TRUE; | |
| 140 } | |
| 141 | |
| 142 static void U_CALLCONV | |
| 143 initializeSystemDefaultCentury() | |
| 144 { | |
| 145 // initialize systemDefaultCentury and systemDefaultCenturyYear based | |
| 146 // on the current time. They'll be set to 80 years before | |
| 147 // the current time. | |
| 148 UErrorCode status = U_ZERO_ERROR; | |
| 149 BuddhistCalendar calendar(Locale("@calendar=buddhist"),status); | |
| 150 if (U_SUCCESS(status)) { | |
| 151 calendar.setTime(Calendar::getNow(), status); | |
| 152 calendar.add(UCAL_YEAR, -80, status); | |
| 153 UDate newStart = calendar.getTime(status); | |
| 154 int32_t newYear = calendar.get(UCAL_YEAR, status); | |
| 155 gSystemDefaultCenturyStartYear = newYear; | |
| 156 gSystemDefaultCenturyStart = newStart; | |
| 157 } | |
| 158 // We have no recourse upon failure unless we want to propagate the failure | |
| 159 // out. | |
| 160 } | |
| 161 | |
| 162 UDate BuddhistCalendar::defaultCenturyStart() const | |
| 163 { | |
| 164 // lazy-evaluate systemDefaultCenturyStart and systemDefaultCenturyStartYear | |
| 165 umtx_initOnce(gBCInitOnce, &initializeSystemDefaultCentury); | |
| 166 return gSystemDefaultCenturyStart; | |
| 167 } | |
| 168 | |
| 169 int32_t BuddhistCalendar::defaultCenturyStartYear() const | |
| 170 { | |
| 171 // lazy-evaluate systemDefaultCenturyStartYear and systemDefaultCenturyStart | |
| 172 umtx_initOnce(gBCInitOnce, &initializeSystemDefaultCentury); | |
| 173 return gSystemDefaultCenturyStartYear; | |
| 174 } | |
| 175 | |
| 176 | |
| 177 U_NAMESPACE_END | |
| 178 | |
| 179 #endif |
