1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/intl/icu/source/i18n/cecal.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,149 @@
1.4 +/*
1.5 +*******************************************************************************
1.6 +* Copyright (C) 2003 - 2009, International Business Machines Corporation and *
1.7 +* others. All Rights Reserved. *
1.8 +*******************************************************************************
1.9 +*/
1.10 +
1.11 +#include "unicode/utypes.h"
1.12 +
1.13 +#if !UCONFIG_NO_FORMATTING
1.14 +
1.15 +#include "cecal.h"
1.16 +#include "gregoimp.h" //Math
1.17 +
1.18 +U_NAMESPACE_BEGIN
1.19 +
1.20 +static const int32_t LIMITS[UCAL_FIELD_COUNT][4] = {
1.21 + // Minimum Greatest Least Maximum
1.22 + // Minimum Maximum
1.23 + { 0, 0, 1, 1}, // ERA
1.24 + { 1, 1, 5000000, 5000000}, // YEAR
1.25 + { 0, 0, 12, 12}, // MONTH
1.26 + { 1, 1, 52, 53}, // WEEK_OF_YEAR
1.27 + {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // WEEK_OF_MONTH
1.28 + { 1, 1, 5, 30}, // DAY_OF_MONTH
1.29 + { 1, 1, 365, 366}, // DAY_OF_YEAR
1.30 + {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // DAY_OF_WEEK
1.31 + { -1, -1, 1, 5}, // DAY_OF_WEEK_IN_MONTH
1.32 + {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // AM_PM
1.33 + {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // HOUR
1.34 + {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // HOUR_OF_DAY
1.35 + {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // MINUTE
1.36 + {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // SECOND
1.37 + {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // MILLISECOND
1.38 + {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // ZONE_OFFSET
1.39 + {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // DST_OFFSET
1.40 + { -5000000, -5000000, 5000000, 5000000}, // YEAR_WOY
1.41 + {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // DOW_LOCAL
1.42 + { -5000000, -5000000, 5000000, 5000000}, // EXTENDED_YEAR
1.43 + {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // JULIAN_DAY
1.44 + {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // MILLISECONDS_IN_DAY
1.45 + {/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // IS_LEAP_MONTH
1.46 +};
1.47 +
1.48 +//-------------------------------------------------------------------------
1.49 +// Constructors...
1.50 +//-------------------------------------------------------------------------
1.51 +
1.52 +CECalendar::CECalendar(const Locale& aLocale, UErrorCode& success)
1.53 +: Calendar(TimeZone::createDefault(), aLocale, success)
1.54 +{
1.55 + setTimeInMillis(getNow(), success);
1.56 +}
1.57 +
1.58 +CECalendar::CECalendar (const CECalendar& other)
1.59 +: Calendar(other)
1.60 +{
1.61 +}
1.62 +
1.63 +CECalendar::~CECalendar()
1.64 +{
1.65 +}
1.66 +
1.67 +CECalendar&
1.68 +CECalendar::operator=(const CECalendar& right)
1.69 +{
1.70 + Calendar::operator=(right);
1.71 + return *this;
1.72 +}
1.73 +
1.74 +//-------------------------------------------------------------------------
1.75 +// Calendar framework
1.76 +//-------------------------------------------------------------------------
1.77 +
1.78 +int32_t
1.79 +CECalendar::handleComputeMonthStart(int32_t eyear,int32_t emonth, UBool /*useMonth*/) const
1.80 +{
1.81 + return ceToJD(eyear, emonth, 0, getJDEpochOffset());
1.82 +}
1.83 +
1.84 +int32_t
1.85 +CECalendar::handleGetLimit(UCalendarDateFields field, ELimitType limitType) const
1.86 +{
1.87 + return LIMITS[field][limitType];
1.88 +}
1.89 +
1.90 +UBool
1.91 +CECalendar::inDaylightTime(UErrorCode& status) const
1.92 +{
1.93 + if (U_FAILURE(status) || !getTimeZone().useDaylightTime()) {
1.94 + return FALSE;
1.95 + }
1.96 +
1.97 + // Force an update of the state of the Calendar.
1.98 + ((CECalendar*)this)->complete(status); // cast away const
1.99 +
1.100 + return (UBool)(U_SUCCESS(status) ? (internalGet(UCAL_DST_OFFSET) != 0) : FALSE);
1.101 +}
1.102 +
1.103 +UBool
1.104 +CECalendar::haveDefaultCentury() const
1.105 +{
1.106 + return TRUE;
1.107 +}
1.108 +
1.109 +//-------------------------------------------------------------------------
1.110 +// Calendar system Conversion methods...
1.111 +//-------------------------------------------------------------------------
1.112 +int32_t
1.113 +CECalendar::ceToJD(int32_t year, int32_t month, int32_t date, int32_t jdEpochOffset)
1.114 +{
1.115 + // handle month > 12, < 0 (e.g. from add/set)
1.116 + if ( month >= 0 ) {
1.117 + year += month/13;
1.118 + month %= 13;
1.119 + } else {
1.120 + ++month;
1.121 + year += month/13 - 1;
1.122 + month = month%13 + 12;
1.123 + }
1.124 + return (int32_t) (
1.125 + jdEpochOffset // difference from Julian epoch to 1,1,1
1.126 + + 365 * year // number of days from years
1.127 + + ClockMath::floorDivide(year, 4) // extra day of leap year
1.128 + + 30 * month // number of days from months (months are 0-based)
1.129 + + date - 1 // number of days for present month (1 based)
1.130 + );
1.131 +}
1.132 +
1.133 +void
1.134 +CECalendar::jdToCE(int32_t julianDay, int32_t jdEpochOffset, int32_t& year, int32_t& month, int32_t& day)
1.135 +{
1.136 + int32_t c4; // number of 4 year cycle (1461 days)
1.137 + int32_t r4; // remainder of 4 year cycle, always positive
1.138 +
1.139 + c4 = ClockMath::floorDivide(julianDay - jdEpochOffset, 1461, r4);
1.140 +
1.141 + year = 4 * c4 + (r4/365 - r4/1460); // 4 * <number of 4year cycle> + <years within the last cycle>
1.142 +
1.143 + int32_t doy = (r4 == 1460) ? 365 : (r4 % 365); // days in present year
1.144 +
1.145 + month = doy / 30; // 30 -> Coptic/Ethiopic month length up to 12th month
1.146 + day = (doy % 30) + 1; // 1-based days in a month
1.147 +}
1.148 +
1.149 +U_NAMESPACE_END
1.150 +
1.151 +#endif /* #if !UCONFIG_NO_FORMATTING */
1.152 +//eof
