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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
* Copyright (C) 2003 - 2009, International Business Machines Corporation and *
* others. All Rights Reserved. *
*******************************************************************************
*/
#include "unicode/utypes.h"
#if !UCONFIG_NO_FORMATTING
#include "cecal.h"
#include "gregoimp.h" //Math
#include "cstring.h"
U_NAMESPACE_BEGIN
static const int32_t LIMITS[UCAL_FIELD_COUNT][4] = {
// Minimum Greatest Least Maximum
// Minimum Maximum
{ 0, 0, 1, 1}, // ERA
{ 1, 1, 5000000, 5000000}, // YEAR
{ 0, 0, 12, 12}, // MONTH
{ 1, 1, 52, 53}, // WEEK_OF_YEAR
{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // WEEK_OF_MONTH
{ 1, 1, 5, 30}, // DAY_OF_MONTH
{ 1, 1, 365, 366}, // DAY_OF_YEAR
{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // DAY_OF_WEEK
{ -1, -1, 1, 5}, // DAY_OF_WEEK_IN_MONTH
{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // AM_PM
{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // HOUR
{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // HOUR_OF_DAY
{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // MINUTE
{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // SECOND
{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // MILLISECOND
{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // ZONE_OFFSET
{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // DST_OFFSET
{ -5000000, -5000000, 5000000, 5000000}, // YEAR_WOY
{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // DOW_LOCAL
{ -5000000, -5000000, 5000000, 5000000}, // EXTENDED_YEAR
{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // JULIAN_DAY
{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // MILLISECONDS_IN_DAY
{/*N/A*/-1,/*N/A*/-1,/*N/A*/-1,/*N/A*/-1}, // IS_LEAP_MONTH
{ 0, 0, 12, 12}, // ORDINAL_MONTH
};
//-------------------------------------------------------------------------
// Constructors...
//-------------------------------------------------------------------------
CECalendar::CECalendar(const Locale& aLocale, UErrorCode& success)
: Calendar(TimeZone::forLocaleOrDefault(aLocale), aLocale, success)
{
}
CECalendar::CECalendar (const CECalendar& other)
: Calendar(other)
{
}
CECalendar::~CECalendar()
{
}
//-------------------------------------------------------------------------
// Calendar framework
//-------------------------------------------------------------------------
int64_t
CECalendar::handleComputeMonthStart(int32_t eyear,int32_t emonth, UBool /*useMonth*/, UErrorCode& /*status*/) const
{
int64_t year64 = eyear;
// handle month > 12, < 0 (e.g. from add/set)
if ( emonth >= 0 ) {
year64 += emonth/13;
emonth %= 13;
} else {
++emonth;
year64 += emonth/13 - 1;
emonth = emonth%13 + 12;
}
return (
getJDEpochOffset() // difference from Julian epoch to 1,1,1
+ 365LL * year64 // number of days from years
+ ClockMath::floorDivideInt64(year64, 4LL) // extra day of leap year
+ 30 * emonth // number of days from months (months are 0-based)
- 1 // number of days for present month (1 based)
);
}
int32_t
CECalendar::handleGetLimit(UCalendarDateFields field, ELimitType limitType) const
{
return LIMITS[field][limitType];
}
//-------------------------------------------------------------------------
// Calendar system Conversion methods...
//-------------------------------------------------------------------------
namespace {
void jdToCE(int32_t julianDay, int32_t jdEpochOffset, int32_t& year, int32_t& month, int32_t& day, int32_t& doy, UErrorCode& status)
{
int32_t c4; // number of 4 year cycle (1461 days)
int32_t r4; // remainder of 4 year cycle, always positive
if (uprv_add32_overflow(julianDay, -jdEpochOffset, &julianDay)) {
status = U_ILLEGAL_ARGUMENT_ERROR;
return;
}
c4 = ClockMath::floorDivide(julianDay, 1461, &r4);
year = 4 * c4 + (r4/365 - r4/1460); // 4 * <number of 4year cycle> + <years within the last cycle>
doy = (r4 == 1460) ? 365 : (r4 % 365); // days in present year
month = doy / 30; // 30 -> Coptic/Ethiopic month length up to 12th month
day = (doy % 30) + 1; // 1-based days in a month
doy++; // 1-based days in a year.
}
} // namespace
void
CECalendar::handleComputeFields(int32_t julianDay, UErrorCode& status)
{
int32_t eyear, month, day, doy;
jdToCE(julianDay, getJDEpochOffset(), eyear, month, day, doy, status);
if (U_FAILURE(status)) return;
int32_t era = extendedYearToEra(eyear);
int32_t year = extendedYearToYear(eyear);
internalSet(UCAL_EXTENDED_YEAR, eyear);
internalSet(UCAL_ERA, era);
internalSet(UCAL_YEAR, year);
internalSet(UCAL_MONTH, month);
internalSet(UCAL_ORDINAL_MONTH, month);
internalSet(UCAL_DATE, day);
internalSet(UCAL_DAY_OF_YEAR, doy);
}
static const char* kMonthCode13 = "M13";
const char* CECalendar::getTemporalMonthCode(UErrorCode& status) const {
if (get(UCAL_MONTH, status) == 12) {
return kMonthCode13;
}
return Calendar::getTemporalMonthCode(status);
}
void
CECalendar::setTemporalMonthCode(const char* code, UErrorCode& status) {
if (U_FAILURE(status)) {
return;
}
if (uprv_strcmp(code, kMonthCode13) == 0) {
set(UCAL_MONTH, 12);
set(UCAL_IS_LEAP_MONTH, 0);
return;
}
Calendar::setTemporalMonthCode(code, status);
}
U_NAMESPACE_END
#endif /* #if !UCONFIG_NO_FORMATTING */
//eof
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