intl/icu/source/i18n/cecal.cpp@fc2d59ddac77 (annotated)
intl/icu/source/i18n/cecal.cpp
Wed, 31 Dec 2014 07:22:50 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 07:22:50 +0100
- branch
- TOR_BUG_3246
- changeset 4
- fc2d59ddac77
- permissions
- -rw-r--r--
Correct previous dual key logic pending first delivery installment.
| michael@0 | 1 | /* |
| michael@0 | 2 | ******************************************************************************* |
| michael@0 | 3 | * Copyright (C) 2003 - 2009, International Business Machines Corporation and * |
| michael@0 | 4 | * others. All Rights Reserved. * |
| michael@0 | 5 | ******************************************************************************* |
| michael@0 | 6 | */ |
| michael@0 | 7 | |
| michael@0 | 8 | #include "unicode/utypes.h" |
| michael@0 | 9 | |
| michael@0 | 10 | #if !UCONFIG_NO_FORMATTING |
| michael@0 | 11 | |
| michael@0 | 12 | #include "cecal.h" |
| michael@0 | 13 | #include "gregoimp.h" //Math |
| michael@0 | 14 | |
| michael@0 | 15 | U_NAMESPACE_BEGIN |
| michael@0 | 16 | |
| michael@0 | 17 | static const int32_t LIMITS[UCAL_FIELD_COUNT][4] = { |
| michael@0 | 18 | // Minimum Greatest Least Maximum |
| michael@0 | 19 | // Minimum Maximum |
| michael@0 | 20 | { 0, 0, 1, 1}, // ERA |
| michael@0 | 21 | { 1, 1, 5000000, 5000000}, // YEAR |
| michael@0 | 22 | { 0, 0, 12, 12}, // MONTH |
| michael@0 | 23 | { 1, 1, 52, 53}, // WEEK_OF_YEAR |
| michael@0 | 24 | {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // WEEK_OF_MONTH |
| michael@0 | 25 | { 1, 1, 5, 30}, // DAY_OF_MONTH |
| michael@0 | 26 | { 1, 1, 365, 366}, // DAY_OF_YEAR |
| michael@0 | 27 | {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // DAY_OF_WEEK |
| michael@0 | 28 | { -1, -1, 1, 5}, // DAY_OF_WEEK_IN_MONTH |
| michael@0 | 29 | {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // AM_PM |
| michael@0 | 30 | {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // HOUR |
| michael@0 | 31 | {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // HOUR_OF_DAY |
| michael@0 | 32 | {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // MINUTE |
| michael@0 | 33 | {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // SECOND |
| michael@0 | 34 | {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // MILLISECOND |
| michael@0 | 35 | {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // ZONE_OFFSET |
| michael@0 | 36 | {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // DST_OFFSET |
| michael@0 | 37 | { -5000000, -5000000, 5000000, 5000000}, // YEAR_WOY |
| michael@0 | 38 | {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // DOW_LOCAL |
| michael@0 | 39 | { -5000000, -5000000, 5000000, 5000000}, // EXTENDED_YEAR |
| michael@0 | 40 | {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // JULIAN_DAY |
| michael@0 | 41 | {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // MILLISECONDS_IN_DAY |
| michael@0 | 42 | {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // IS_LEAP_MONTH |
| michael@0 | 43 | }; |
| michael@0 | 44 | |
| michael@0 | 45 | //------------------------------------------------------------------------- |
| michael@0 | 46 | // Constructors... |
| michael@0 | 47 | //------------------------------------------------------------------------- |
| michael@0 | 48 | |
| michael@0 | 49 | CECalendar::CECalendar(const Locale& aLocale, UErrorCode& success) |
| michael@0 | 50 | : Calendar(TimeZone::createDefault(), aLocale, success) |
| michael@0 | 51 | { |
| michael@0 | 52 | setTimeInMillis(getNow(), success); |
| michael@0 | 53 | } |
| michael@0 | 54 | |
| michael@0 | 55 | CECalendar::CECalendar (const CECalendar& other) |
| michael@0 | 56 | : Calendar(other) |
| michael@0 | 57 | { |
| michael@0 | 58 | } |
| michael@0 | 59 | |
| michael@0 | 60 | CECalendar::~CECalendar() |
| michael@0 | 61 | { |
| michael@0 | 62 | } |
| michael@0 | 63 | |
| michael@0 | 64 | CECalendar& |
| michael@0 | 65 | CECalendar::operator=(const CECalendar& right) |
| michael@0 | 66 | { |
| michael@0 | 67 | Calendar::operator=(right); |
| michael@0 | 68 | return *this; |
| michael@0 | 69 | } |
| michael@0 | 70 | |
| michael@0 | 71 | //------------------------------------------------------------------------- |
| michael@0 | 72 | // Calendar framework |
| michael@0 | 73 | //------------------------------------------------------------------------- |
| michael@0 | 74 | |
| michael@0 | 75 | int32_t |
| michael@0 | 76 | CECalendar::handleComputeMonthStart(int32_t eyear,int32_t emonth, UBool /*useMonth*/) const |
| michael@0 | 77 | { |
| michael@0 | 78 | return ceToJD(eyear, emonth, 0, getJDEpochOffset()); |
| michael@0 | 79 | } |
| michael@0 | 80 | |
| michael@0 | 81 | int32_t |
| michael@0 | 82 | CECalendar::handleGetLimit(UCalendarDateFields field, ELimitType limitType) const |
| michael@0 | 83 | { |
| michael@0 | 84 | return LIMITS[field][limitType]; |
| michael@0 | 85 | } |
| michael@0 | 86 | |
| michael@0 | 87 | UBool |
| michael@0 | 88 | CECalendar::inDaylightTime(UErrorCode& status) const |
| michael@0 | 89 | { |
| michael@0 | 90 | if (U_FAILURE(status) || !getTimeZone().useDaylightTime()) { |
| michael@0 | 91 | return FALSE; |
| michael@0 | 92 | } |
| michael@0 | 93 | |
| michael@0 | 94 | // Force an update of the state of the Calendar. |
| michael@0 | 95 | ((CECalendar*)this)->complete(status); // cast away const |
| michael@0 | 96 | |
| michael@0 | 97 | return (UBool)(U_SUCCESS(status) ? (internalGet(UCAL_DST_OFFSET) != 0) : FALSE); |
| michael@0 | 98 | } |
| michael@0 | 99 | |
| michael@0 | 100 | UBool |
| michael@0 | 101 | CECalendar::haveDefaultCentury() const |
| michael@0 | 102 | { |
| michael@0 | 103 | return TRUE; |
| michael@0 | 104 | } |
| michael@0 | 105 | |
| michael@0 | 106 | //------------------------------------------------------------------------- |
| michael@0 | 107 | // Calendar system Conversion methods... |
| michael@0 | 108 | //------------------------------------------------------------------------- |
| michael@0 | 109 | int32_t |
| michael@0 | 110 | CECalendar::ceToJD(int32_t year, int32_t month, int32_t date, int32_t jdEpochOffset) |
| michael@0 | 111 | { |
| michael@0 | 112 | // handle month > 12, < 0 (e.g. from add/set) |
| michael@0 | 113 | if ( month >= 0 ) { |
| michael@0 | 114 | year += month/13; |
| michael@0 | 115 | month %= 13; |
| michael@0 | 116 | } else { |
| michael@0 | 117 | ++month; |
| michael@0 | 118 | year += month/13 - 1; |
| michael@0 | 119 | month = month%13 + 12; |
| michael@0 | 120 | } |
| michael@0 | 121 | return (int32_t) ( |
| michael@0 | 122 | jdEpochOffset // difference from Julian epoch to 1,1,1 |
| michael@0 | 123 | + 365 * year // number of days from years |
| michael@0 | 124 | + ClockMath::floorDivide(year, 4) // extra day of leap year |
| michael@0 | 125 | + 30 * month // number of days from months (months are 0-based) |
| michael@0 | 126 | + date - 1 // number of days for present month (1 based) |
| michael@0 | 127 | ); |
| michael@0 | 128 | } |
| michael@0 | 129 | |
| michael@0 | 130 | void |
| michael@0 | 131 | CECalendar::jdToCE(int32_t julianDay, int32_t jdEpochOffset, int32_t& year, int32_t& month, int32_t& day) |
| michael@0 | 132 | { |
| michael@0 | 133 | int32_t c4; // number of 4 year cycle (1461 days) |
| michael@0 | 134 | int32_t r4; // remainder of 4 year cycle, always positive |
| michael@0 | 135 | |
| michael@0 | 136 | c4 = ClockMath::floorDivide(julianDay - jdEpochOffset, 1461, r4); |
| michael@0 | 137 | |
| michael@0 | 138 | year = 4 * c4 + (r4/365 - r4/1460); // 4 * <number of 4year cycle> + <years within the last cycle> |
| michael@0 | 139 | |
| michael@0 | 140 | int32_t doy = (r4 == 1460) ? 365 : (r4 % 365); // days in present year |
| michael@0 | 141 | |
| michael@0 | 142 | month = doy / 30; // 30 -> Coptic/Ethiopic month length up to 12th month |
| michael@0 | 143 | day = (doy % 30) + 1; // 1-based days in a month |
| michael@0 | 144 | } |
| michael@0 | 145 | |
| michael@0 | 146 | U_NAMESPACE_END |
| michael@0 | 147 | |
| michael@0 | 148 | #endif /* #if !UCONFIG_NO_FORMATTING */ |
| michael@0 | 149 | //eof |
