| /* |
| ******************************************************************************* |
| * Copyright (C) 2003-2009,2012, International Business Machines Corporation and * |
| * others. All Rights Reserved. * |
| ******************************************************************************* |
| * |
| * File JAPANCAL.CPP |
| * |
| * Modification History: |
| * 05/16/2003 srl copied from buddhcal.cpp |
| * |
| */ |
| |
| #include "unicode/utypes.h" |
| |
| #if !UCONFIG_NO_FORMATTING |
| |
| #include "japancal.h" |
| #include "unicode/gregocal.h" |
| #include "umutex.h" |
| #include "uassert.h" |
| |
| //#define U_DEBUG_JCAL |
| |
| #ifdef U_DEBUG_JCAL |
| #include <stdio.h> |
| #endif |
| |
| U_NAMESPACE_BEGIN |
| |
| UOBJECT_DEFINE_RTTI_IMPLEMENTATION(JapaneseCalendar) |
| |
| // Gregorian date of each emperor's ascension |
| // Years are AD, months are 1-based. |
| static const struct { |
| int16_t year; |
| int8_t month; |
| int8_t day; |
| } kEraInfo[] = { |
| // Year Month Day |
| { 645, 6, 19 }, // Taika 0 |
| { 650, 2, 15 }, // Hakuchi 1 |
| { 672, 1, 1 }, // Hakuho 2 |
| { 686, 7, 20 }, // Shucho 3 |
| { 701, 3, 21 }, // Taiho 4 |
| { 704, 5, 10 }, // Keiun 5 |
| { 708, 1, 11 }, // Wado 6 |
| { 715, 9, 2 }, // Reiki 7 |
| { 717, 11, 17 }, // Yoro 8 |
| { 724, 2, 4 }, // Jinki 9 |
| { 729, 8, 5 }, // Tempyo 10 |
| { 749, 4, 14 }, // Tempyo-kampo 11 |
| { 749, 7, 2 }, // Tempyo-shoho 12 |
| { 757, 8, 18 }, // Tempyo-hoji 13 |
| { 765, 1, 7 }, // Tempho-jingo 14 |
| { 767, 8, 16 }, // Jingo-keiun 15 |
| { 770, 10, 1 }, // Hoki 16 |
| { 781, 1, 1 }, // Ten-o 17 |
| { 782, 8, 19 }, // Enryaku 18 |
| { 806, 5, 18 }, // Daido 19 |
| { 810, 9, 19 }, // Konin 20 |
| { 824, 1, 5 }, // Tencho |
| { 834, 1, 3 }, // Showa |
| { 848, 6, 13 }, // Kajo |
| { 851, 4, 28 }, // Ninju |
| { 854, 11, 30 }, // Saiko |
| { 857, 2, 21 }, // Tennan |
| { 859, 4, 15 }, // Jogan |
| { 877, 4, 16 }, // Genkei |
| { 885, 2, 21 }, // Ninna |
| { 889, 4, 27 }, // Kampyo 30 |
| { 898, 4, 26 }, // Shotai |
| { 901, 7, 15 }, // Engi |
| { 923, 4, 11 }, // Encho |
| { 931, 4, 26 }, // Shohei |
| { 938, 5, 22 }, // Tengyo |
| { 947, 4, 22 }, // Tenryaku |
| { 957, 10, 27 }, // Tentoku |
| { 961, 2, 16 }, // Owa |
| { 964, 7, 10 }, // Koho |
| { 968, 8, 13 }, // Anna 40 |
| { 970, 3, 25 }, // Tenroku |
| { 973, 12, 20 }, // Ten-en |
| { 976, 7, 13 }, // Jogen |
| { 978, 11, 29 }, // Tengen |
| { 983, 4, 15 }, // Eikan |
| { 985, 4, 27 }, // Kanna |
| { 987, 4, 5 }, // Ei-en |
| { 989, 8, 8 }, // Eiso |
| { 990, 11, 7 }, // Shoryaku |
| { 995, 2, 22 }, // Chotoku 50 |
| { 999, 1, 13 }, // Choho |
| { 1004, 7, 20 }, // Kanko |
| { 1012, 12, 25 }, // Chowa |
| { 1017, 4, 23 }, // Kannin |
| { 1021, 2, 2 }, // Jian |
| { 1024, 7, 13 }, // Manju |
| { 1028, 7, 25 }, // Chogen |
| { 1037, 4, 21 }, // Choryaku |
| { 1040, 11, 10 }, // Chokyu |
| { 1044, 11, 24 }, // Kantoku 60 |
| { 1046, 4, 14 }, // Eisho |
| { 1053, 1, 11 }, // Tengi |
| { 1058, 8, 29 }, // Kohei |
| { 1065, 8, 2 }, // Jiryaku |
| { 1069, 4, 13 }, // Enkyu |
| { 1074, 8, 23 }, // Shoho |
| { 1077, 11, 17 }, // Shoryaku |
| { 1081, 2, 10 }, // Eiho |
| { 1084, 2, 7 }, // Otoku |
| { 1087, 4, 7 }, // Kanji 70 |
| { 1094, 12, 15 }, // Kaho |
| { 1096, 12, 17 }, // Eicho |
| { 1097, 11, 21 }, // Shotoku |
| { 1099, 8, 28 }, // Kowa |
| { 1104, 2, 10 }, // Choji |
| { 1106, 4, 9 }, // Kasho |
| { 1108, 8, 3 }, // Tennin |
| { 1110, 7, 13 }, // Ten-ei |
| { 1113, 7, 13 }, // Eikyu |
| { 1118, 4, 3 }, // Gen-ei 80 |
| { 1120, 4, 10 }, // Hoan |
| { 1124, 4, 3 }, // Tenji |
| { 1126, 1, 22 }, // Daiji |
| { 1131, 1, 29 }, // Tensho |
| { 1132, 8, 11 }, // Chosho |
| { 1135, 4, 27 }, // Hoen |
| { 1141, 7, 10 }, // Eiji |
| { 1142, 4, 28 }, // Koji |
| { 1144, 2, 23 }, // Tenyo |
| { 1145, 7, 22 }, // Kyuan 90 |
| { 1151, 1, 26 }, // Ninpei |
| { 1154, 10, 28 }, // Kyuju |
| { 1156, 4, 27 }, // Hogen |
| { 1159, 4, 20 }, // Heiji |
| { 1160, 1, 10 }, // Eiryaku |
| { 1161, 9, 4 }, // Oho |
| { 1163, 3, 29 }, // Chokan |
| { 1165, 6, 5 }, // Eiman |
| { 1166, 8, 27 }, // Nin-an |
| { 1169, 4, 8 }, // Kao 100 |
| { 1171, 4, 21 }, // Shoan |
| { 1175, 7, 28 }, // Angen |
| { 1177, 8, 4 }, // Jisho |
| { 1181, 7, 14 }, // Yowa |
| { 1182, 5, 27 }, // Juei |
| { 1184, 4, 16 }, // Genryuku |
| { 1185, 8, 14 }, // Bunji |
| { 1190, 4, 11 }, // Kenkyu |
| { 1199, 4, 27 }, // Shoji |
| { 1201, 2, 13 }, // Kennin 110 |
| { 1204, 2, 20 }, // Genkyu |
| { 1206, 4, 27 }, // Ken-ei |
| { 1207, 10, 25 }, // Shogen |
| { 1211, 3, 9 }, // Kenryaku |
| { 1213, 12, 6 }, // Kenpo |
| { 1219, 4, 12 }, // Shokyu |
| { 1222, 4, 13 }, // Joo |
| { 1224, 11, 20 }, // Gennin |
| { 1225, 4, 20 }, // Karoku |
| { 1227, 12, 10 }, // Antei 120 |
| { 1229, 3, 5 }, // Kanki |
| { 1232, 4, 2 }, // Joei |
| { 1233, 4, 15 }, // Tempuku |
| { 1234, 11, 5 }, // Bunryaku |
| { 1235, 9, 19 }, // Katei |
| { 1238, 11, 23 }, // Ryakunin |
| { 1239, 2, 7 }, // En-o |
| { 1240, 7, 16 }, // Ninji |
| { 1243, 2, 26 }, // Kangen |
| { 1247, 2, 28 }, // Hoji 130 |
| { 1249, 3, 18 }, // Kencho |
| { 1256, 10, 5 }, // Kogen |
| { 1257, 3, 14 }, // Shoka |
| { 1259, 3, 26 }, // Shogen |
| { 1260, 4, 13 }, // Bun-o |
| { 1261, 2, 20 }, // Kocho |
| { 1264, 2, 28 }, // Bun-ei |
| { 1275, 4, 25 }, // Kenji |
| { 1278, 2, 29 }, // Koan |
| { 1288, 4, 28 }, // Shoo 140 |
| { 1293, 8, 55 }, // Einin |
| { 1299, 4, 25 }, // Shoan |
| { 1302, 11, 21 }, // Kengen |
| { 1303, 8, 5 }, // Kagen |
| { 1306, 12, 14 }, // Tokuji |
| { 1308, 10, 9 }, // Enkei |
| { 1311, 4, 28 }, // Ocho |
| { 1312, 3, 20 }, // Showa |
| { 1317, 2, 3 }, // Bunpo |
| { 1319, 4, 28 }, // Geno 150 |
| { 1321, 2, 23 }, // Genkyo |
| { 1324, 12, 9 }, // Shochu |
| { 1326, 4, 26 }, // Kareki |
| { 1329, 8, 29 }, // Gentoku |
| { 1331, 8, 9 }, // Genko |
| { 1334, 1, 29 }, // Kemmu |
| { 1336, 2, 29 }, // Engen |
| { 1340, 4, 28 }, // Kokoku |
| { 1346, 12, 8 }, // Shohei |
| { 1370, 7, 24 }, // Kentoku 160 |
| { 1372, 4, 1 }, // Bunch\u0169 |
| { 1375, 5, 27 }, // Tenju |
| { 1379, 3, 22 }, // Koryaku |
| { 1381, 2, 10 }, // Kowa |
| { 1384, 4, 28 }, // Gench\u0169 |
| { 1384, 2, 27 }, // Meitoku |
| { 1387, 8, 23 }, // Kakei |
| { 1389, 2, 9 }, // Koo |
| { 1390, 3, 26 }, // Meitoku |
| { 1394, 7, 5 }, // Oei 170 |
| { 1428, 4, 27 }, // Shocho |
| { 1429, 9, 5 }, // Eikyo |
| { 1441, 2, 17 }, // Kakitsu |
| { 1444, 2, 5 }, // Bun-an |
| { 1449, 7, 28 }, // Hotoku |
| { 1452, 7, 25 }, // Kyotoku |
| { 1455, 7, 25 }, // Kosho |
| { 1457, 9, 28 }, // Choroku |
| { 1460, 12, 21 }, // Kansho |
| { 1466, 2, 28 }, // Bunsho 180 |
| { 1467, 3, 3 }, // Onin |
| { 1469, 4, 28 }, // Bunmei |
| { 1487, 7, 29 }, // Chokyo |
| { 1489, 8, 21 }, // Entoku |
| { 1492, 7, 19 }, // Meio |
| { 1501, 2, 29 }, // Bunki |
| { 1504, 2, 30 }, // Eisho |
| { 1521, 8, 23 }, // Taiei |
| { 1528, 8, 20 }, // Kyoroku |
| { 1532, 7, 29 }, // Tenmon 190 |
| { 1555, 10, 23 }, // Koji |
| { 1558, 2, 28 }, // Eiroku |
| { 1570, 4, 23 }, // Genki |
| { 1573, 7, 28 }, // Tensho |
| { 1592, 12, 8 }, // Bunroku |
| { 1596, 10, 27 }, // Keicho |
| { 1615, 7, 13 }, // Genwa |
| { 1624, 2, 30 }, // Kan-ei |
| { 1644, 12, 16 }, // Shoho |
| { 1648, 2, 15 }, // Keian 200 |
| { 1652, 9, 18 }, // Shoo |
| { 1655, 4, 13 }, // Meiryaku |
| { 1658, 7, 23 }, // Manji |
| { 1661, 4, 25 }, // Kanbun |
| { 1673, 9, 21 }, // Enpo |
| { 1681, 9, 29 }, // Tenwa |
| { 1684, 2, 21 }, // Jokyo |
| { 1688, 9, 30 }, // Genroku |
| { 1704, 3, 13 }, // Hoei |
| { 1711, 4, 25 }, // Shotoku 210 |
| { 1716, 6, 22 }, // Kyoho |
| { 1736, 4, 28 }, // Genbun |
| { 1741, 2, 27 }, // Kanpo |
| { 1744, 2, 21 }, // Enkyo |
| { 1748, 7, 12 }, // Kan-en |
| { 1751, 10, 27 }, // Horyaku |
| { 1764, 6, 2 }, // Meiwa |
| { 1772, 11, 16 }, // An-ei |
| { 1781, 4, 2 }, // Tenmei |
| { 1789, 1, 25 }, // Kansei 220 |
| { 1801, 2, 5 }, // Kyowa |
| { 1804, 2, 11 }, // Bunka |
| { 1818, 4, 22 }, // Bunsei |
| { 1830, 12, 10 }, // Tenpo |
| { 1844, 12, 2 }, // Koka |
| { 1848, 2, 28 }, // Kaei |
| { 1854, 11, 27 }, // Ansei |
| { 1860, 3, 18 }, // Man-en |
| { 1861, 2, 19 }, // Bunkyu |
| { 1864, 2, 20 }, // Genji 230 |
| { 1865, 4, 7 }, // Keio 231 |
| { 1868, 9, 8 }, // Meiji 232 |
| { 1912, 7, 30 }, // Taisho 233 |
| { 1926, 12, 25 }, // Showa 234 |
| { 1989, 1, 8 } // Heisei 235 |
| }; |
| |
| #define kEraCount (sizeof(kEraInfo)/sizeof(kEraInfo[0])) |
| |
| /** |
| * The current era, for reference. |
| */ |
| static const int32_t kCurrentEra = (kEraCount-1); // int32_t to match the calendar field type |
| |
| static const int32_t kGregorianEpoch = 1970; // used as the default value of EXTENDED_YEAR |
| |
| /* Some platforms don't like to export constants, like old Palm OS and some z/OS configurations. */ |
| uint32_t JapaneseCalendar::getCurrentEra() { |
| return kCurrentEra; |
| } |
| |
| JapaneseCalendar::JapaneseCalendar(const Locale& aLocale, UErrorCode& success) |
| : GregorianCalendar(aLocale, success) |
| { |
| setTimeInMillis(getNow(), success); // Call this again now that the vtable is set up properly. |
| } |
| |
| JapaneseCalendar::~JapaneseCalendar() |
| { |
| } |
| |
| JapaneseCalendar::JapaneseCalendar(const JapaneseCalendar& source) |
| : GregorianCalendar(source) |
| { |
| } |
| |
| JapaneseCalendar& JapaneseCalendar::operator= ( const JapaneseCalendar& right) |
| { |
| GregorianCalendar::operator=(right); |
| return *this; |
| } |
| |
| Calendar* JapaneseCalendar::clone(void) const |
| { |
| return new JapaneseCalendar(*this); |
| } |
| |
| const char *JapaneseCalendar::getType() const |
| { |
| return "japanese"; |
| } |
| |
| int32_t JapaneseCalendar::getDefaultMonthInYear(int32_t eyear) |
| { |
| int32_t era = internalGetEra(); |
| // TODO do we assume we can trust 'era'? What if it is denormalized? |
| |
| int32_t month = 0; |
| |
| // Find out if we are at the edge of an era |
| |
| if(eyear == kEraInfo[era].year) { |
| // Yes, we're in the first year of this era. |
| return kEraInfo[era].month-1; |
| } |
| |
| return month; |
| } |
| |
| int32_t JapaneseCalendar::getDefaultDayInMonth(int32_t eyear, int32_t month) |
| { |
| int32_t era = internalGetEra(); |
| int32_t day = 1; |
| |
| if(eyear == kEraInfo[era].year) { |
| if(month == (kEraInfo[era].month-1)) { |
| return kEraInfo[era].day; |
| } |
| } |
| |
| return day; |
| } |
| |
| |
| int32_t JapaneseCalendar::internalGetEra() const |
| { |
| return internalGet(UCAL_ERA, kCurrentEra); |
| } |
| |
| int32_t JapaneseCalendar::handleGetExtendedYear() |
| { |
| // EXTENDED_YEAR in JapaneseCalendar is a Gregorian year |
| // The default value of EXTENDED_YEAR is 1970 (Showa 45) |
| int32_t year; |
| |
| if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR && |
| newerField(UCAL_EXTENDED_YEAR, UCAL_ERA) == UCAL_EXTENDED_YEAR) { |
| year = internalGet(UCAL_EXTENDED_YEAR, kGregorianEpoch); |
| } else { |
| // Subtract one because year starts at 1 |
| year = internalGet(UCAL_YEAR) + kEraInfo[internalGetEra()].year - 1; |
| } |
| return year; |
| } |
| |
| |
| void JapaneseCalendar::handleComputeFields(int32_t julianDay, UErrorCode& status) |
| { |
| //Calendar::timeToFields(theTime, quick, status); |
| GregorianCalendar::handleComputeFields(julianDay, status); |
| int32_t year = internalGet(UCAL_EXTENDED_YEAR); // Gregorian year |
| |
| int32_t low = 0; |
| |
| // Short circuit for recent years. Most modern computations will |
| // occur in the current era and won't require the binary search. |
| // Note that if the year is == the current era year, then we use |
| // the binary search to handle the month/dom comparison. |
| #ifdef U_DEBUG_JCAL |
| fprintf(stderr, "== %d \n", year); |
| #endif |
| |
| if (year > kEraInfo[kCurrentEra].year) { |
| low = kCurrentEra; |
| #ifdef U_DEBUG_JCAL |
| fprintf(stderr, " low=%d (special)\n", low); |
| #endif |
| } else { |
| // Binary search |
| int32_t high = kEraCount; |
| |
| #ifdef U_DEBUG_JCAL |
| fprintf(stderr, " high=%d\n", high); |
| #endif |
| while (low < high - 1) { |
| int32_t i = (low + high) / 2; |
| int32_t diff = year - kEraInfo[i].year; |
| |
| #ifdef U_DEBUG_JCAL |
| fprintf(stderr, " d=%d low=%d, high=%d. Considering %d:M%d D%d Y%d. { we are ?:M%d D%d Y%d }\n", |
| diff,low, high, i, kEraInfo[i].month-1, kEraInfo[i].day, kEraInfo[i].year, internalGet(UCAL_MONTH), internalGet(UCAL_DATE),year); |
| #endif |
| |
| // If years are the same, then compare the months, and if those |
| // are the same, compare days of month. In the ERAS array |
| // months are 1-based for easier maintenance. |
| if (diff == 0) { |
| diff = internalGet(UCAL_MONTH) - (kEraInfo[i].month - 1); |
| #ifdef U_DEBUG_JCAL |
| fprintf(stderr, "diff now %d (M) = %d - %d - 1\n", diff, internalGet(UCAL_MONTH), kEraInfo[i].month); |
| #endif |
| if (diff == 0) { |
| diff = internalGet(UCAL_DATE) - kEraInfo[i].day; |
| #ifdef U_DEBUG_JCAL |
| fprintf(stderr, "diff now %d (D)\n", diff); |
| #endif |
| } |
| } |
| if (diff >= 0) { |
| low = i; |
| } else { |
| high = i; |
| } |
| #ifdef U_DEBUG_JCAL |
| fprintf(stderr, ". low=%d, high=%d, i=%d, diff=%d.. %d\n", low, high, i, diff, year); |
| #endif |
| |
| } |
| } |
| |
| #ifdef U_DEBUG_JCAL |
| fprintf(stderr, " low[era]=%d,.. %d\n", low, year); |
| #endif |
| // Now we've found the last era that starts before this date, so |
| // adjust the year to count from the start of that era. Note that |
| // all dates before the first era will fall into the first era by |
| // the algorithm. |
| |
| internalSet(UCAL_ERA, low); |
| internalSet(UCAL_YEAR, year - kEraInfo[low].year + 1); |
| #ifdef U_DEBUG_JCAL |
| fprintf(stderr, " Set ERA=%d, year=%d\n", low, year-kEraInfo[low].year+1); |
| #endif |
| |
| } |
| |
| /* |
| Disable pivoting |
| */ |
| UBool JapaneseCalendar::haveDefaultCentury() const |
| { |
| return FALSE; |
| } |
| |
| UDate JapaneseCalendar::defaultCenturyStart() const |
| { |
| return 0;// WRONG |
| } |
| |
| int32_t JapaneseCalendar::defaultCenturyStartYear() const |
| { |
| return 0; |
| } |
| |
| int32_t JapaneseCalendar::handleGetLimit(UCalendarDateFields field, ELimitType limitType) const |
| { |
| switch(field) { |
| case UCAL_ERA: |
| if (limitType == UCAL_LIMIT_MINIMUM || limitType == UCAL_LIMIT_GREATEST_MINIMUM) { |
| return 0; |
| } |
| return kCurrentEra; |
| case UCAL_YEAR: |
| { |
| switch (limitType) { |
| case UCAL_LIMIT_MINIMUM: |
| case UCAL_LIMIT_GREATEST_MINIMUM: |
| return 1; |
| case UCAL_LIMIT_LEAST_MAXIMUM: |
| return 1; |
| case UCAL_LIMIT_COUNT: //added to avoid warning |
| case UCAL_LIMIT_MAXIMUM: |
| return GregorianCalendar::handleGetLimit(UCAL_YEAR, UCAL_LIMIT_MAXIMUM) - kEraInfo[kCurrentEra].year; |
| default: |
| return 1; // Error condition, invalid limitType |
| } |
| } |
| default: |
| return GregorianCalendar::handleGetLimit(field,limitType); |
| } |
| } |
| |
| int32_t JapaneseCalendar::getActualMaximum(UCalendarDateFields field, UErrorCode& status) const { |
| if (field == UCAL_YEAR) { |
| int32_t era = get(UCAL_ERA, status); |
| if (U_FAILURE(status)) { |
| return 0; // error case... any value |
| } |
| if (era == kCurrentEra) { |
| // TODO: Investigate what value should be used here - revisit after 4.0. |
| return handleGetLimit(UCAL_YEAR, UCAL_LIMIT_MAXIMUM); |
| } else { |
| int32_t nextEraYear = kEraInfo[era + 1].year; |
| int32_t nextEraMonth = kEraInfo[era + 1].month; |
| int32_t nextEraDate = kEraInfo[era + 1].day; |
| |
| int32_t maxYear = nextEraYear - kEraInfo[era].year + 1; // 1-base |
| if (nextEraMonth == 1 && nextEraDate == 1) { |
| // Subtract 1, because the next era starts at Jan 1 |
| maxYear--; |
| } |
| return maxYear; |
| } |
| } |
| return GregorianCalendar::getActualMaximum(field, status); |
| } |
| |
| U_NAMESPACE_END |
| |
| #endif |
