The Tor Browser: intl/icu/source/i18n/japancal.cpp@b8a032363ba2 (annotated)

intl/icu/source/i18n/japancal.cpp@b8a032363ba2 (annotated)

intl/icu/source/i18n/japancal.cpp

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /*
 *******************************************************************************
 * 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

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intl/icu/source/i18n/japancal.cpp@b8a032363ba2 (annotated)

intl/icu/source/i18n/japancal.cpp