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"Smart pointer" class, closes a UCalendar via ucal_close().

C++ API: "Smart pointers" for use with and in ICU4C C++ code.

#define U_DEFINE_LOCAL_OPEN_POINTER(LocalPointerClassName, Type, closeFunction)

"Smart pointer" definition macro, deletes objects via the closeFunction.

UCalendarDateFields

Possible fields in a UCalendar.

@ UCAL_HOUR_OF_DAY

Field number indicating the hour of the day.

@ UCAL_EXTENDED_YEAR

Year of this calendar system, encompassing all supra-year fields.

@ UCAL_ERA

Field number indicating the era, e.g., AD or BC in the Gregorian (Julian) calendar.

@ UCAL_ORDINAL_MONTH

Field number indicating the month.

@ UCAL_WEEK_OF_MONTH

Field number indicating the week number within the current month.

@ UCAL_YEAR

Field number indicating the year.

@ UCAL_DAY_OF_YEAR

Field number indicating the day number within the current year.

@ UCAL_YEAR_WOY

Field number indicating the extended year corresponding to the UCAL_WEEK_OF_YEAR field.

@ UCAL_MINUTE

Field number indicating the minute within the hour.

@ UCAL_JULIAN_DAY

Field number indicating the modified Julian day number.

@ UCAL_DATE

Field number indicating the day of the month.

@ UCAL_SECOND

Field number indicating the second within the minute.

@ UCAL_DAY_OF_WEEK_IN_MONTH

Field number indicating the ordinal number of the day of the week within the current month.

@ UCAL_MONTH

Field number indicating the month.

@ UCAL_ZONE_OFFSET

Field number indicating the raw offset from GMT in milliseconds.

@ UCAL_WEEK_OF_YEAR

Field number indicating the week number within the current year.

@ UCAL_MILLISECOND

Field number indicating the millisecond within the second.

@ UCAL_HOUR

Field number indicating the hour of the morning or afternoon.

@ UCAL_DAY_OF_MONTH

Field number indicating the day of the month.

@ UCAL_DAY_OF_WEEK

Field number indicating the day of the week.

@ UCAL_AM_PM

Field number indicating whether the HOUR is before or after noon.

@ UCAL_FIELD_COUNT

One more than the highest normal UCalendarDateFields value.

@ UCAL_IS_LEAP_MONTH

Whether or not the current month is a leap month (0 or 1).

@ UCAL_DST_OFFSET

Field number indicating the daylight savings offset in milliseconds.

@ UCAL_MILLISECONDS_IN_DAY

Ranges from 0 to 23:59:59.999 (regardless of DST).

@ UCAL_DOW_LOCAL

Field number indicating the localized day of week.

U_CAPI int32_t ucal_getTimeZoneDisplayName(const UCalendar *cal, UCalendarDisplayNameType type, const char *locale, UChar *result, int32_t resultLength, UErrorCode *status)

Get the display name for a UCalendar's TimeZone.

UTimeZoneLocalOption

Options used by ucal_getTimeZoneOffsetFromLocal and BasicTimeZone::getOffsetFromLocal() to specify ho...

@ UCAL_TZ_LOCAL_DAYLIGHT_LATTER

An input time is interpreted as daylight saving time when local time is switched to/from standard tim...

@ UCAL_TZ_LOCAL_STANDARD_LATTER

An input time is interpreted as standard time when local time is switched to/from daylight saving tim...

@ UCAL_TZ_LOCAL_STANDARD_FORMER

An input time is interpreted as standard time when local time is switched to/from daylight saving tim...

@ UCAL_TZ_LOCAL_DAYLIGHT_FORMER

An input time is interpreted as daylight saving time when local time is switched to/from standard tim...

@ UCAL_TZ_LOCAL_LATTER

An input time is always interpreted as local time after a time zone transition.

@ UCAL_TZ_LOCAL_FORMER

An input time is always interpreted as local time before a time zone transition.

U_CAPI UEnumeration * ucal_openTimeZones(UErrorCode *ec)

Create an enumeration over all time zones.

U_CAPI UDate ucal_getGregorianChange(const UCalendar *cal, UErrorCode *pErrorCode)

Gets the Gregorian Calendar change date.

USystemTimeZoneType

System time zone type constants used by filtering zones in ucal_openTimeZoneIDEnumeration.

@ UCAL_ZONE_TYPE_CANONICAL

Canonical system zones.

@ UCAL_ZONE_TYPE_ANY

Any system zones.

@ UCAL_ZONE_TYPE_CANONICAL_LOCATION

Canonical system zones associated with actual locations.

U_CAPI int32_t ucal_getWeekendTransition(const UCalendar *cal, UCalendarDaysOfWeek dayOfWeek, UErrorCode *status)

Returns the time during the day at which the weekend begins or ends in this calendar system.

UCalendarAttribute

Types of UCalendar attributes.

@ UCAL_MINIMAL_DAYS_IN_FIRST_WEEK

Minimum number of days in first week.

@ UCAL_REPEATED_WALL_TIME

The behavior for handling wall time repeating multiple times at negative time zone offset transitions...

@ UCAL_FIRST_DAY_OF_WEEK

First day of week.

@ UCAL_SKIPPED_WALL_TIME

The behavior for handling skipped wall time at positive time zone offset transitions.

@ UCAL_LENIENT

Lenient parsing.

U_CAPI void ucal_setDate(UCalendar *cal, int32_t year, int32_t month, int32_t date, UErrorCode *status)

Set a UCalendar's current date.

U_CAPI void ucal_setGregorianChange(UCalendar *cal, UDate date, UErrorCode *pErrorCode)

Sets the GregorianCalendar change date.

U_CAPI const char * ucal_getAvailable(int32_t localeIndex)

Get a locale for which calendars are available.

U_CAPI UEnumeration * ucal_getKeywordValuesForLocale(const char *key, const char *locale, UBool commonlyUsed, UErrorCode *status)

Given a key and a locale, returns an array of string values in a preferred order that would make a di...

U_CAPI UBool ucal_isWeekend(const UCalendar *cal, UDate date, UErrorCode *status)

Returns true if the given UDate is in the weekend in this calendar system.

U_CAPI void ucal_close(UCalendar *cal)

Close a UCalendar.

UCalendarWallTimeOption

Options for handling ambiguous wall time at time zone offset transitions.

@ UCAL_WALLTIME_NEXT_VALID

An ambiguous wall time to be interpreted as the next valid wall time.

@ UCAL_WALLTIME_LAST

An ambiguous wall time to be interpreted as the latest.

@ UCAL_WALLTIME_FIRST

An ambiguous wall time to be interpreted as the earliest.

U_CAPI UCalendar * ucal_open(const UChar *zoneID, int32_t len, const char *locale, UCalendarType type, UErrorCode *status)

Open a UCalendar.

U_CAPI void ucal_clearField(UCalendar *cal, UCalendarDateFields field)

Clear a field in a UCalendar.

U_CAPI UCalendar * ucal_clone(const UCalendar *cal, UErrorCode *status)

Open a copy of a UCalendar.

U_CAPI int32_t ucal_getLimit(const UCalendar *cal, UCalendarDateFields field, UCalendarLimitType type, UErrorCode *status)

Determine a limit for a field in a UCalendar.

U_CAPI int32_t ucal_getIanaTimeZoneID(const UChar *id, int32_t len, UChar *result, int32_t resultCapacity, UErrorCode *status)

Returns the preferred time zone ID in the IANA time zone database for the given time zone ID.

U_CAPI UBool ucal_inDaylightTime(const UCalendar *cal, UErrorCode *status)

Determine if a UCalendar is currently in daylight savings time.

UCalendarWeekdayType

Weekday types, as returned by ucal_getDayOfWeekType().

@ UCAL_WEEKDAY

Designates a full weekday (no part of the day is included in the weekend).

@ UCAL_WEEKEND_CEASE

Designates a day that starts as the weekend and transitions to a weekday.

@ UCAL_WEEKEND

Designates a full weekend day (the entire day is included in the weekend).

@ UCAL_WEEKEND_ONSET

Designates a day that starts as a weekday and transitions to the weekend.

U_CAPI UCalendarWeekdayType ucal_getDayOfWeekType(const UCalendar *cal, UCalendarDaysOfWeek dayOfWeek, UErrorCode *status)

Returns whether the given day of the week is a weekday, a weekend day, or a day that transitions from...

U_CAPI void ucal_set(UCalendar *cal, UCalendarDateFields field, int32_t value)

Set the value of a field in a UCalendar.

UCalendarDaysOfWeek

Useful constant for days of week.

@ UCAL_WEDNESDAY

Wednesday.

@ UCAL_SATURDAY

Saturday.

@ UCAL_THURSDAY

Thursday.

@ UCAL_MONDAY

Monday.

@ UCAL_SUNDAY

Sunday.

@ UCAL_FRIDAY

Friday.

@ UCAL_TUESDAY

Tuesday.

U_CAPI UEnumeration * ucal_openTimeZoneIDEnumeration(USystemTimeZoneType zoneType, const char *region, const int32_t *rawOffset, UErrorCode *ec)

Create an enumeration over system time zone IDs with the given filter conditions.

U_CAPI int32_t ucal_getAttribute(const UCalendar *cal, UCalendarAttribute attr)

Get a numeric attribute associated with a UCalendar.

U_CAPI int32_t ucal_get(const UCalendar *cal, UCalendarDateFields field, UErrorCode *status)

Get the current value of a field from a UCalendar.

U_CAPI void ucal_add(UCalendar *cal, UCalendarDateFields field, int32_t amount, UErrorCode *status)

Add a specified signed amount to a particular field in a UCalendar.

UCalendarLimitType

Possible limit values for a UCalendar.

@ UCAL_ACTUAL_MAXIMUM

Actual maximum value.

@ UCAL_ACTUAL_MINIMUM

Actual minimum value.

@ UCAL_GREATEST_MINIMUM

Greatest minimum value.

@ UCAL_MINIMUM

Minimum value.

@ UCAL_MAXIMUM

Maximum value.

@ UCAL_LEAST_MAXIMUM

Least maximum value.

UCalendarAMPMs

Possible AM/PM values in a UCalendar.

@ UCAL_AM

AM.

@ UCAL_PM

PM.

U_CAPI UBool ucal_getTimeZoneTransitionDate(const UCalendar *cal, UTimeZoneTransitionType type, UDate *transition, UErrorCode *status)

Get the UDate for the next/previous time zone transition relative to the calendar's current date,...

UTimeZoneTransitionType

Time zone transition types for ucal_getTimeZoneTransitionDate.

@ UCAL_TZ_TRANSITION_PREVIOUS

Get the previous transition before the current date, i.e.

@ UCAL_TZ_TRANSITION_PREVIOUS_INCLUSIVE

Get the previous transition on or before the current date, i.e.

@ UCAL_TZ_TRANSITION_NEXT

Get the next transition after the current date, i.e.

@ UCAL_TZ_TRANSITION_NEXT_INCLUSIVE

Get the next transition on or after the current date, i.e.

UCalendarType

Possible types of UCalendars.

@ UCAL_GREGORIAN

Unambiguously designates the Gregorian calendar for the locale.

@ UCAL_DEFAULT

A better name for UCAL_TRADITIONAL.

@ UCAL_TRADITIONAL

Despite the name, UCAL_TRADITIONAL designates the locale's default calendar, which may be the Gregori...

U_CAPI void ucal_clear(UCalendar *calendar)

Clear all fields in a UCalendar.

U_CAPI void ucal_setTimeZone(UCalendar *cal, const UChar *zoneID, int32_t len, UErrorCode *status)

Set the TimeZone used by a UCalendar.

U_CAPI int32_t ucal_getDSTSavings(const UChar *zoneID, UErrorCode *ec)

Return the amount of time in milliseconds that the clock is advanced during daylight savings time for...

U_CAPI void ucal_getTimeZoneOffsetFromLocal(const UCalendar *cal, UTimeZoneLocalOption nonExistingTimeOpt, UTimeZoneLocalOption duplicatedTimeOpt, int32_t *rawOffset, int32_t *dstOffset, UErrorCode *status)

Returns the time zone raw and GMT offset for the given moment in time.

U_CAPI void ucal_setDefaultTimeZone(const UChar *zoneID, UErrorCode *ec)

Set the default time zone.

U_CAPI int32_t ucal_getTimeZoneID(const UCalendar *cal, UChar *result, int32_t resultLength, UErrorCode *status)

Get the ID of the UCalendar's time zone.

U_CAPI int32_t ucal_getHostTimeZone(UChar *result, int32_t resultCapacity, UErrorCode *ec)

Return the current host time zone.

U_CAPI int32_t ucal_getDefaultTimeZone(UChar *result, int32_t resultCapacity, UErrorCode *ec)

Return the default time zone.

U_CAPI UDate ucal_getNow(void)

Get the current date and time.

U_CAPI UBool ucal_equivalentTo(const UCalendar *cal1, const UCalendar *cal2)

Returns true if two UCalendars are equivalent.

U_CAPI const char * ucal_getLocaleByType(const UCalendar *cal, ULocDataLocaleType type, UErrorCode *status)

Get the locale for this calendar object.

U_CAPI int32_t ucal_getCanonicalTimeZoneID(const UChar *id, int32_t len, UChar *result, int32_t resultCapacity, UBool *isSystemID, UErrorCode *status)

Returns the canonical system timezone ID or the normalized custom time zone ID for the given time zon...

U_CAPI const char * ucal_getTZDataVersion(UErrorCode *status)

Returns the timezone data version currently used by ICU.

U_CAPI int32_t ucal_getTimeZoneIDForWindowsID(const UChar *winid, int32_t len, const char *region, UChar *id, int32_t idCapacity, UErrorCode *status)

Converts a Windows time zone ID to an equivalent system time zone ID for a region.

U_CAPI int32_t ucal_getFieldDifference(UCalendar *cal, UDate target, UCalendarDateFields field, UErrorCode *status)

Return the difference between the target time and the time this calendar object is currently set to.

U_CAPI void ucal_setMillis(UCalendar *cal, UDate dateTime, UErrorCode *status)

Set a UCalendar's current time in millis.

U_CAPI void ucal_roll(UCalendar *cal, UCalendarDateFields field, int32_t amount, UErrorCode *status)

Add a specified signed amount to a particular field in a UCalendar.

U_CAPI const char * ucal_getType(const UCalendar *cal, UErrorCode *status)

Get the resource keyword value string designating the calendar type for the UCalendar.

U_CAPI int32_t ucal_getWindowsTimeZoneID(const UChar *id, int32_t len, UChar *winid, int32_t winidCapacity, UErrorCode *status)

Converts a system time zone ID to an equivalent Windows time zone ID.

U_CAPI UDate ucal_getMillis(const UCalendar *cal, UErrorCode *status)

Get a UCalendar's current time in millis.

U_CAPI void ucal_setAttribute(UCalendar *cal, UCalendarAttribute attr, int32_t newValue)

Set a numeric attribute associated with a UCalendar.

U_CAPI UEnumeration * ucal_openCountryTimeZones(const char *country, UErrorCode *ec)

Create an enumeration over all time zones associated with the given country.

UCalendarDisplayNameType

Possible formats for a UCalendar's display name.

@ UCAL_STANDARD

Standard display name.

@ UCAL_SHORT_DST

Short daylight savings display name.

@ UCAL_SHORT_STANDARD

Short standard display name.

@ UCAL_DST

Daylight savings display name.

UCalendarMonths

Possible months in a UCalendar.

@ UCAL_DECEMBER

December.

@ UCAL_MAY

May.

@ UCAL_UNDECIMBER

Value of the UCAL_MONTH field indicating the thirteenth month of the year.

@ UCAL_APRIL

April.

@ UCAL_NOVEMBER

November.

@ UCAL_JUNE

June.

@ UCAL_AUGUST

August.

@ UCAL_JULY

July.

@ UCAL_SEPTEMBER

September.

@ UCAL_JANUARY

January.

@ UCAL_FEBRUARY

February.

@ UCAL_MARCH

March.

@ UCAL_OCTOBER

October.

U_CAPI UBool ucal_isSet(const UCalendar *cal, UCalendarDateFields field)

Determine if a field in a UCalendar is set.

U_CAPI void ucal_setDateTime(UCalendar *cal, int32_t year, int32_t month, int32_t date, int32_t hour, int32_t minute, int32_t second, UErrorCode *status)

Set a UCalendar's current date.

void * UCalendar

A calendar.

U_CAPI int32_t ucal_countAvailable(void)

Determine how many locales have calendars available.

C API: String Enumeration.

struct UEnumeration UEnumeration

structure representing an enumeration object instance

C API: Locale ID functionality similar to C++ class Locale.

ULocDataLocaleType

Constants for *_getLocale() Allow user to select whether she wants information on requested,...

int8_t UBool

The ICU boolean type, a signed-byte integer.

#define U_CAPI

This is used to declare a function as a public ICU C API.

char16_t UChar

The base type for UTF-16 code units and pointers.

Basic definitions for ICU, for both C and C++ APIs.

UErrorCode

Standard ICU4C error code type, a substitute for exceptions.

double UDate

Date and Time data type.