+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
/*
********************************************************************************
* Copyright (C) 1997-2014, International Business Machines
#include "unicode/ucal.h"
#include "unicode/umisc.h"
+#if U_SHOW_CPLUSPLUS_API
U_NAMESPACE_BEGIN
class ICUServiceFactory;
*
* <p>
* <strong>Ambiguous Wall Clock Time.</strong> When time offset from UTC has
- * changed, it produces ambiguous time slot around the transition. For example,
+ * changed, it produces an ambiguous time slot around the transition. For example,
* many US locations observe daylight saving time. On the date switching to daylight
- * saving time in US, wall clock time jumps from 1:00 AM (standard) to 2:00 AM
+ * saving time in US, wall clock time jumps from 12:59 AM (standard) to 2:00 AM
* (daylight). Therefore, wall clock time from 1:00 AM to 1:59 AM do not exist on
* the date. When the input wall time fall into this missing time slot, the ICU
* Calendar resolves the time using the UTC offset before the transition by default.
/**
* Clears the values of all the time fields, making them both unset and assigning
- * them a value of zero. The field values will be determined during the next
- * resolving of time into time fields.
+ * them a value of zero (except for era in some cases, see below). The field values
+ * will be determined during the next resolving of time into time fields.
+ *
+ * This effectively results in the following:
+ * 1. Gregorian-like calendars (gregorian, iso8601, japanese, buddhist, roc) are set
+ * to a UDate value of 0, corresponding to the epoch date of gregorian
+ * January 1, 1970 CE at UTC 00:00:00.
+ * 2. Other calendars are set to the beginning of the first day of the first month of
+ * the current era. Note that for the chinese and dangi calendars, the era
+ * corresponds to the current 60-year stem-branch cycle, so there is a new era
+ * every 60 years. The current era began on gregorian February 2, 1984.
* @stable ICU 2.0
*/
void clear(void);
* (YEAR_WOY and WEEK_OF_YEAR) to an extended year in the case
* where YEAR, EXTENDED_YEAR are not set.
* The Calendar implementation assumes yearWoy is in extended gregorian form
- * @internal
* @return the extended year, UCAL_EXTENDED_YEAR
+ * @internal
*/
virtual int32_t handleGetExtendedYearFromWeekFields(int32_t yearWoy, int32_t woy);
+ /**
+ * Validate a single field of this calendar. Subclasses should
+ * override this method to validate any calendar-specific fields.
+ * Generic fields can be handled by
+ * <code>Calendar::validateField()</code>.
+ * @see #validateField(int, int, int, int&)
+ * @internal
+ */
+ virtual void validateField(UCalendarDateFields field, UErrorCode &status);
+
#ifndef U_HIDE_INTERNAL_API
/**
* Compute the Julian day from fields. Will determine whether to use
/**
* Time zone affects the time calculation done by Calendar. Calendar subclasses use
- * the time zone data to produce the local time.
+ * the time zone data to produce the local time. Always set; never NULL.
*/
TimeZone* fZone;
*/
void validateFields(UErrorCode &status);
- /**
- * Validate a single field of this calendar. Subclasses should
- * override this method to validate any calendar-specific fields.
- * Generic fields can be handled by
- * <code>Calendar::validateField()</code>.
- * @see #validateField(int, int, int, int&)
- * @internal
- */
- virtual void validateField(UCalendarDateFields field, UErrorCode &status);
-
/**
* Validate a single field of this calendar given its minimum and
* maximum allowed value. If the field is out of range,
/**
* Register a new Calendar factory. The factory will be adopted.
* INTERNAL in 2.6
+ *
+ * Because ICU may choose to cache Calendars internally, this must
+ * be called at application startup, prior to any calls to
+ * Calendar::createInstance to avoid undefined behavior.
+ *
* @param toAdopt the factory instance to be adopted
* @param status the in/out status code, no special meanings are assigned
* @return a registry key that can be used to unregister this factory
* register call. Key becomes invalid after a successful call and should not be used again.
* The CalendarFactory corresponding to the key will be deleted.
* INTERNAL in 2.6
+ *
+ * Because ICU may choose to cache Calendars internally, this should
+ * be called during application shutdown, after all calls to
+ * Calendar::createInstance to avoid undefined behavior.
+ *
* @param key the registry key returned by a previous call to registerFactory
* @param status the in/out status code, no special meanings are assigned
* @return TRUE if the factory for the key was successfully unregistered
#endif /* !UCONFIG_NO_SERVICE */
/**
- * @internal
* @return TRUE if this calendar has a default century (i.e. 03 -> 2003)
+ * @internal
*/
virtual UBool haveDefaultCentury() const = 0;
/**
- * @internal
* @return the start of the default century, as a UDate
+ * @internal
*/
virtual UDate defaultCenturyStart() const = 0;
/**
- * @internal
* @return the beginning year of the default century, as a year
+ * @internal
*/
virtual int32_t defaultCenturyStartYear() const = 0;
*/
Locale getLocale(ULocDataLocaleType type, UErrorCode &status) const;
+ /**
+ * @return The related Gregorian year; will be obtained by modifying the value
+ * obtained by get from UCAL_EXTENDED_YEAR field
+ * @internal
+ */
+ virtual int32_t getRelatedYear(UErrorCode &status) const;
+
+ /**
+ * @param year The related Gregorian year to set; will be modified as necessary then
+ * set in UCAL_EXTENDED_YEAR field
+ * @internal
+ */
+ virtual void setRelatedYear(int32_t year);
+
#ifndef U_HIDE_INTERNAL_API
/** Get the locale for this calendar object. You can choose between valid and actual locale.
* @param type type of the locale we're looking for (valid or actual)
* @return TRUE if a transition is found.
*/
UBool getImmediatePreviousZoneTransition(UDate base, UDate *transitionTime, UErrorCode& status) const;
+
+public:
+#ifndef U_HIDE_INTERNAL_API
+ /**
+ * Creates a new Calendar from a Locale for the cache.
+ * This method does not set the time or timezone in returned calendar.
+ * @param locale the locale.
+ * @param status any error returned here.
+ * @return the new Calendar object with no time or timezone set.
+ * @internal For ICU use only.
+ */
+ static Calendar * U_EXPORT2 makeInstance(
+ const Locale &locale, UErrorCode &status);
+
+ /**
+ * Get the calendar type for given locale.
+ * @param locale the locale
+ * @param typeBuffer calendar type returned here
+ * @param typeBufferSize The size of typeBuffer in bytes. If the type
+ * can't fit in the buffer, this method sets status to
+ * U_BUFFER_OVERFLOW_ERROR
+ * @param status error, if any, returned here.
+ * @internal For ICU use only.
+ */
+ static void U_EXPORT2 getCalendarTypeFromLocale(
+ const Locale &locale,
+ char *typeBuffer,
+ int32_t typeBufferSize,
+ UErrorCode &status);
+#endif /* U_HIDE_INTERNAL_API */
};
// -------------------------------------
{
roll((UCalendarDateFields) field, up, status);
}
-#endif
+#endif /* U_HIDE_DEPRECATED_API */
// -------------------------------------
{
return weekNumber(dayOfPeriod, dayOfPeriod, dayOfWeek);
}
-#endif
+#endif /* U_HIDE_INTERNAL_API */
U_NAMESPACE_END
+#endif // U_SHOW_CPLUSPLUS_API
#endif /* #if !UCONFIG_NO_FORMATTING */
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