VTimeZone
is a class implementing RFC2445 VTIMEZONE.
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#include <vtzone.h>
Inheritance diagram for VTimeZone:
Public Member Functions | |
VTimeZone (const VTimeZone &source) | |
Copy constructor. | |
virtual | ~VTimeZone () |
Destructor. | |
VTimeZone & | operator= (const VTimeZone &right) |
Assignment operator. | |
virtual UBool | operator== (const TimeZone &that) const |
Return true if the given TimeZone objects are semantically equal. | |
virtual UBool | operator!= (const TimeZone &that) const |
Return true if the given TimeZone objects are semantically unequal. | |
UBool | getTZURL (UnicodeString &url) const |
Gets the RFC2445 TZURL property value. | |
void | setTZURL (const UnicodeString &url) |
Sets the RFC2445 TZURL property value. | |
UBool | getLastModified (UDate &lastModified) const |
Gets the RFC2445 LAST-MODIFIED property value. | |
void | setLastModified (UDate lastModified) |
Sets the RFC2445 LAST-MODIFIED property value. | |
void | write (UnicodeString &result, UErrorCode &status) const |
Writes RFC2445 VTIMEZONE data for this time zone. | |
void | write (UDate start, UnicodeString &result, UErrorCode &status) |
Writes RFC2445 VTIMEZONE data for this time zone applicalbe for dates after the specified start time. | |
void | writeSimple (UDate time, UnicodeString &result, UErrorCode &status) |
Writes RFC2445 VTIMEZONE data applicalbe for the specified date. | |
virtual TimeZone * | clone (void) const |
Clones TimeZone objects polymorphically. | |
virtual int32_t | getOffset (uint8_t era, int32_t year, int32_t month, int32_t day, uint8_t dayOfWeek, int32_t millis, UErrorCode &status) const |
Returns the TimeZone's adjusted GMT offset (i.e., the number of milliseconds to add to GMT to get local time in this time zone, taking daylight savings time into account) as of a particular reference date. | |
virtual int32_t | getOffset (uint8_t era, int32_t year, int32_t month, int32_t day, uint8_t dayOfWeek, int32_t millis, int32_t monthLength, UErrorCode &status) const |
Gets the time zone offset, for current date, modified in case of daylight savings. | |
virtual void | getOffset (UDate date, UBool local, int32_t &rawOffset, int32_t &dstOffset, UErrorCode &ec) const |
Returns the time zone raw and GMT offset for the given moment in time. | |
virtual void | setRawOffset (int32_t offsetMillis) |
Sets the TimeZone's raw GMT offset (i.e., the number of milliseconds to add to GMT to get local time, before taking daylight savings time into account). | |
virtual int32_t | getRawOffset (void) const |
Returns the TimeZone's raw GMT offset (i.e., the number of milliseconds to add to GMT to get local time, before taking daylight savings time into account). | |
virtual UBool | useDaylightTime (void) const |
Queries if this time zone uses daylight savings time. | |
virtual UBool | inDaylightTime (UDate date, UErrorCode &status) const |
Queries if the given date is in daylight savings time in this time zone. | |
virtual UBool | hasSameRules (const TimeZone &other) const |
Returns true if this zone has the same rule and offset as another zone. | |
virtual UBool | getNextTransition (UDate base, UBool inclusive, TimeZoneTransition &result) |
Gets the first time zone transition after the base time. | |
virtual UBool | getPreviousTransition (UDate base, UBool inclusive, TimeZoneTransition &result) |
Gets the most recent time zone transition before the base time. | |
virtual int32_t | countTransitionRules (UErrorCode &status) |
Returns the number of TimeZoneRule s which represents time transitions, for this time zone, that is, all TimeZoneRule s for this time zone except InitialTimeZoneRule . | |
virtual void | getTimeZoneRules (const InitialTimeZoneRule *&initial, const TimeZoneRule *trsrules[], int32_t &trscount, UErrorCode &status) |
Gets the InitialTimeZoneRule and the set of TimeZoneRule which represent time transitions for this time zone. | |
virtual UClassID | getDynamicClassID (void) const |
Returns a unique class ID POLYMORPHICALLY. | |
Static Public Member Functions | |
VTimeZone * | createVTimeZoneByID (const UnicodeString &ID) |
Create a VTimeZone instance by the time zone ID. | |
VTimeZone * | createVTimeZone (const UnicodeString &vtzdata, UErrorCode &status) |
Create a VTimeZone instance by RFC2445 VTIMEZONE data. | |
UClassID | getStaticClassID (void) |
Return the class ID for this class. |
VTimeZone
is a class implementing RFC2445 VTIMEZONE.
You can create a VTimeZone
instance from a time zone ID supported by TimeZone
. With the VTimeZone
instance created from the ID, you can write out the rule in RFC2445 VTIMEZONE format. Also, you can create a VTimeZone
instance from RFC2445 VTIMEZONE data stream, which allows you to calculate time zone offset by the rules defined by the data.
Note: The consumer of this class reading or writing VTIMEZONE data is responsible to decode or encode Non-ASCII text. Methods reading/writing VTIMEZONE data in this class do nothing with MIME encoding.
Definition at line 39 of file vtzone.h.
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Copy constructor.
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Destructor.
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Clones TimeZone objects polymorphically. Clients are responsible for deleting the TimeZone object cloned.
Implements TimeZone. |
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Returns the number of The return value range is 0 or any positive value.
Implements BasicTimeZone. |
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Create a
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Create a
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Returns a unique class ID POLYMORPHICALLY. Pure virtual override. This method is to implement a simple version of RTTI, since not all C++ compilers support genuine RTTI. Polymorphic operator==() and clone() methods call this method.
Implements TimeZone. |
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Gets the RFC2445 LAST-MODIFIED property value.
When a
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Gets the first time zone transition after the base time.
Implements BasicTimeZone. |
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Returns the time zone raw and GMT offset for the given moment in time. Upon return, local-millis = GMT-millis + rawOffset + dstOffset. All computations are performed in the proleptic Gregorian calendar. The default implementation in the TimeZone class delegates to the 8-argument getOffset().
Reimplemented from TimeZone. |
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Gets the time zone offset, for current date, modified in case of daylight savings. This is the offset to add *to* UTC to get local time. Note: Don't call this method. Instead, call the getOffset(UDate...) overload, which returns both the raw and the DST offset for a given time. This method is retained only for backward compatibility.
Implements TimeZone. |
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Returns the TimeZone's adjusted GMT offset (i.e., the number of milliseconds to add to GMT to get local time in this time zone, taking daylight savings time into account) as of a particular reference date. The reference date is used to determine whether daylight savings time is in effect and needs to be figured into the offset that is returned (in other words, what is the adjusted GMT offset in this time zone at this particular date and time?). For the time zones produced by createTimeZone(), the reference data is specified according to the Gregorian calendar, and the date and time fields are local standard time. Note: Don't call this method. Instead, call the getOffset(UDate...) overload, which returns both the raw and the DST offset for a given time. This method is retained only for backward compatibility.
Implements TimeZone. |
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Gets the most recent time zone transition before the base time.
Implements BasicTimeZone. |
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Returns the TimeZone's raw GMT offset (i.e., the number of milliseconds to add to GMT to get local time, before taking daylight savings time into account).
Implements TimeZone. |
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Return the class ID for this class. This is useful only for comparing to a return value from getDynamicClassID(). For example: . Base* polymorphic_pointer = createPolymorphicObject(); . if (polymorphic_pointer->getDynamicClassID() == . erived::getStaticClassID()) ...
Reimplemented from TimeZone. |
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Gets the
On successful return, the argument initial points to non-NULL
Implements BasicTimeZone. |
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Gets the RFC2445 TZURL property value.
When a
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Returns true if this zone has the same rule and offset as another zone. That is, if this zone differs only in ID, if at all.
Reimplemented from TimeZone. |
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Queries if the given date is in daylight savings time in this time zone. This method is wasteful since it creates a new GregorianCalendar and deletes it each time it is called. This is a deprecated method and provided only for Java compatibility.
Implements TimeZone. |
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Return true if the given Objects of different subclasses are considered unequal.
Reimplemented from TimeZone. |
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Assignment operator.
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Return true if the given Objects of different subclasses are considered unequal.
Reimplemented from TimeZone. |
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Sets the RFC2445 LAST-MODIFIED property value.
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Sets the TimeZone's raw GMT offset (i.e., the number of milliseconds to add to GMT to get local time, before taking daylight savings time into account).
Implements TimeZone. |
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Sets the RFC2445 TZURL property value.
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Queries if this time zone uses daylight savings time.
Implements TimeZone. |
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Writes RFC2445 VTIMEZONE data for this time zone applicalbe for dates after the specified start time.
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Writes RFC2445 VTIMEZONE data for this time zone.
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Writes RFC2445 VTIMEZONE data applicalbe for the specified date. Some common iCalendar implementations can only handle a single time zone property or a pair of standard and daylight time properties using BYDAY rule with day of week (such as BYDAY=1SUN). This method produce the VTIMEZONE data which can be handled these implementations. The rules produced by this method can be used only for calculating time zone offset around the specified date.
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