mirror of https://github.com/lukechilds/node.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
455 lines
20 KiB
455 lines
20 KiB
/*
|
|
*******************************************************************************
|
|
* Copyright (C) 2007-2013, International Business Machines Corporation and
|
|
* others. All Rights Reserved.
|
|
*******************************************************************************
|
|
*/
|
|
#ifndef VTZONE_H
|
|
#define VTZONE_H
|
|
|
|
#include "unicode/utypes.h"
|
|
|
|
/**
|
|
* \file
|
|
* \brief C++ API: RFC2445 VTIMEZONE support
|
|
*/
|
|
|
|
#if !UCONFIG_NO_FORMATTING
|
|
|
|
#include "unicode/basictz.h"
|
|
|
|
U_NAMESPACE_BEGIN
|
|
|
|
class VTZWriter;
|
|
class VTZReader;
|
|
class UVector;
|
|
|
|
/**
|
|
* <code>VTimeZone</code> is a class implementing RFC2445 VTIMEZONE. You can create a
|
|
* <code>VTimeZone</code> instance from a time zone ID supported by <code>TimeZone</code>.
|
|
* With the <code>VTimeZone</code> instance created from the ID, you can write out the rule
|
|
* in RFC2445 VTIMEZONE format. Also, you can create a <code>VTimeZone</code> instance
|
|
* from RFC2445 VTIMEZONE data stream, which allows you to calculate time
|
|
* zone offset by the rules defined by the data. Or, you can create a
|
|
* <code>VTimeZone</code> from any other ICU <code>BasicTimeZone</code>.
|
|
* <br><br>
|
|
* 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.
|
|
* @stable ICU 3.8
|
|
*/
|
|
class U_I18N_API VTimeZone : public BasicTimeZone {
|
|
public:
|
|
/**
|
|
* Copy constructor.
|
|
* @param source The <code>VTimeZone</code> object to be copied.
|
|
* @stable ICU 3.8
|
|
*/
|
|
VTimeZone(const VTimeZone& source);
|
|
|
|
/**
|
|
* Destructor.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual ~VTimeZone();
|
|
|
|
/**
|
|
* Assignment operator.
|
|
* @param right The object to be copied.
|
|
* @stable ICU 3.8
|
|
*/
|
|
VTimeZone& operator=(const VTimeZone& right);
|
|
|
|
/**
|
|
* Return true if the given <code>TimeZone</code> objects are
|
|
* semantically equal. Objects of different subclasses are considered unequal.
|
|
* @param that The object to be compared with.
|
|
* @return true if the given <code>TimeZone</code> objects are
|
|
*semantically equal.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual UBool operator==(const TimeZone& that) const;
|
|
|
|
/**
|
|
* Return true if the given <code>TimeZone</code> objects are
|
|
* semantically unequal. Objects of different subclasses are considered unequal.
|
|
* @param that The object to be compared with.
|
|
* @return true if the given <code>TimeZone</code> objects are
|
|
* semantically unequal.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual UBool operator!=(const TimeZone& that) const;
|
|
|
|
/**
|
|
* Create a <code>VTimeZone</code> instance by the time zone ID.
|
|
* @param ID The time zone ID, such as America/New_York
|
|
* @return A <code>VTimeZone</code> object initialized by the time zone ID,
|
|
* or NULL when the ID is unknown.
|
|
* @stable ICU 3.8
|
|
*/
|
|
static VTimeZone* createVTimeZoneByID(const UnicodeString& ID);
|
|
|
|
/**
|
|
* Create a <code>VTimeZone</code> instance using a basic time zone.
|
|
* @param basicTZ The basic time zone instance
|
|
* @param status Output param to filled in with a success or an error.
|
|
* @return A <code>VTimeZone</code> object initialized by the basic time zone.
|
|
* @stable ICU 4.6
|
|
*/
|
|
static VTimeZone* createVTimeZoneFromBasicTimeZone(const BasicTimeZone& basicTZ,
|
|
UErrorCode &status);
|
|
|
|
/**
|
|
* Create a <code>VTimeZone</code> instance by RFC2445 VTIMEZONE data
|
|
*
|
|
* @param vtzdata The string including VTIMEZONE data block
|
|
* @param status Output param to filled in with a success or an error.
|
|
* @return A <code>VTimeZone</code> initialized by the VTIMEZONE data or
|
|
* NULL if failed to load the rule from the VTIMEZONE data.
|
|
* @stable ICU 3.8
|
|
*/
|
|
static VTimeZone* createVTimeZone(const UnicodeString& vtzdata, UErrorCode& status);
|
|
|
|
/**
|
|
* Gets the RFC2445 TZURL property value. When a <code>VTimeZone</code> instance was
|
|
* created from VTIMEZONE data, the initial value is set by the TZURL property value
|
|
* in the data. Otherwise, the initial value is not set.
|
|
* @param url Receives the RFC2445 TZURL property value.
|
|
* @return TRUE if TZURL attribute is available and value is set.
|
|
* @stable ICU 3.8
|
|
*/
|
|
UBool getTZURL(UnicodeString& url) const;
|
|
|
|
/**
|
|
* Sets the RFC2445 TZURL property value.
|
|
* @param url The TZURL property value.
|
|
* @stable ICU 3.8
|
|
*/
|
|
void setTZURL(const UnicodeString& url);
|
|
|
|
/**
|
|
* Gets the RFC2445 LAST-MODIFIED property value. When a <code>VTimeZone</code> instance
|
|
* was created from VTIMEZONE data, the initial value is set by the LAST-MODIFIED property
|
|
* value in the data. Otherwise, the initial value is not set.
|
|
* @param lastModified Receives the last modified date.
|
|
* @return TRUE if lastModified attribute is available and value is set.
|
|
* @stable ICU 3.8
|
|
*/
|
|
UBool getLastModified(UDate& lastModified) const;
|
|
|
|
/**
|
|
* Sets the RFC2445 LAST-MODIFIED property value.
|
|
* @param lastModified The LAST-MODIFIED date.
|
|
* @stable ICU 3.8
|
|
*/
|
|
void setLastModified(UDate lastModified);
|
|
|
|
/**
|
|
* Writes RFC2445 VTIMEZONE data for this time zone
|
|
* @param result Output param to filled in with the VTIMEZONE data.
|
|
* @param status Output param to filled in with a success or an error.
|
|
* @stable ICU 3.8
|
|
*/
|
|
void write(UnicodeString& result, UErrorCode& status) const;
|
|
|
|
/**
|
|
* Writes RFC2445 VTIMEZONE data for this time zone applicalbe
|
|
* for dates after the specified start time.
|
|
* @param start The start date.
|
|
* @param result Output param to filled in with the VTIMEZONE data.
|
|
* @param status Output param to filled in with a success or an error.
|
|
* @stable ICU 3.8
|
|
*/
|
|
void write(UDate start, UnicodeString& result, UErrorCode& status) const;
|
|
|
|
/**
|
|
* 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.
|
|
* @param time The date used for rule extraction.
|
|
* @param result Output param to filled in with the VTIMEZONE data.
|
|
* @param status Output param to filled in with a success or an error.
|
|
* @stable ICU 3.8
|
|
*/
|
|
void writeSimple(UDate time, UnicodeString& result, UErrorCode& status) const;
|
|
|
|
/**
|
|
* Clones TimeZone objects polymorphically. Clients are responsible for deleting
|
|
* the TimeZone object cloned.
|
|
* @return A new copy of this TimeZone object.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual TimeZone* clone(void) 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. 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.
|
|
*
|
|
* <p>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.
|
|
*
|
|
* @param era The reference date's era
|
|
* @param year The reference date's year
|
|
* @param month The reference date's month (0-based; 0 is January)
|
|
* @param day The reference date's day-in-month (1-based)
|
|
* @param dayOfWeek The reference date's day-of-week (1-based; 1 is Sunday)
|
|
* @param millis The reference date's milliseconds in day, local standard time
|
|
* @param status Output param to filled in with a success or an error.
|
|
* @return The offset in milliseconds to add to GMT to get local time.
|
|
* @stable ICU 3.8
|
|
*/
|
|
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;
|
|
|
|
/**
|
|
* 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.
|
|
*
|
|
* <p>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.
|
|
*
|
|
* @param era The reference date's era
|
|
* @param year The reference date's year
|
|
* @param month The reference date's month (0-based; 0 is January)
|
|
* @param day The reference date's day-in-month (1-based)
|
|
* @param dayOfWeek The reference date's day-of-week (1-based; 1 is Sunday)
|
|
* @param millis The reference date's milliseconds in day, local standard time
|
|
* @param monthLength The length of the given month in days.
|
|
* @param status Output param to filled in with a success or an error.
|
|
* @return The offset in milliseconds to add to GMT to get local time.
|
|
* @stable ICU 3.8
|
|
*/
|
|
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;
|
|
|
|
/**
|
|
* 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().
|
|
*
|
|
* @param date moment in time for which to return offsets, in
|
|
* units of milliseconds from January 1, 1970 0:00 GMT, either GMT
|
|
* time or local wall time, depending on `local'.
|
|
* @param local if true, `date' is local wall time; otherwise it
|
|
* is in GMT time.
|
|
* @param rawOffset output parameter to receive the raw offset, that
|
|
* is, the offset not including DST adjustments
|
|
* @param dstOffset output parameter to receive the DST offset,
|
|
* that is, the offset to be added to `rawOffset' to obtain the
|
|
* total offset between local and GMT time. If DST is not in
|
|
* effect, this value is zero; otherwise it is a positive value,
|
|
* typically one hour.
|
|
* @param ec input-output error code
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual void getOffset(UDate date, UBool local, int32_t& rawOffset,
|
|
int32_t& dstOffset, UErrorCode& ec) const;
|
|
|
|
/**
|
|
* 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).
|
|
*
|
|
* @param offsetMillis The new raw GMT offset for this time zone.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual void setRawOffset(int32_t offsetMillis);
|
|
|
|
/**
|
|
* 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).
|
|
*
|
|
* @return The TimeZone's raw GMT offset.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual int32_t getRawOffset(void) const;
|
|
|
|
/**
|
|
* Queries if this time zone uses daylight savings time.
|
|
* @return true if this time zone uses daylight savings time,
|
|
* false, otherwise.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual UBool useDaylightTime(void) const;
|
|
|
|
/**
|
|
* 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.
|
|
*
|
|
* @param date the given UDate.
|
|
* @param status Output param filled in with success/error code.
|
|
* @return true if the given date is in daylight savings time,
|
|
* false, otherwise.
|
|
* @deprecated ICU 2.4. Use Calendar::inDaylightTime() instead.
|
|
*/
|
|
virtual UBool inDaylightTime(UDate date, UErrorCode& status) const;
|
|
|
|
/**
|
|
* 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.
|
|
* @param other the <code>TimeZone</code> object to be compared with
|
|
* @return true if the given zone is the same as this one,
|
|
* with the possible exception of the ID
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual UBool hasSameRules(const TimeZone& other) const;
|
|
|
|
/**
|
|
* Gets the first time zone transition after the base time.
|
|
* @param base The base time.
|
|
* @param inclusive Whether the base time is inclusive or not.
|
|
* @param result Receives the first transition after the base time.
|
|
* @return TRUE if the transition is found.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual UBool getNextTransition(UDate base, UBool inclusive, TimeZoneTransition& result) const;
|
|
|
|
/**
|
|
* Gets the most recent time zone transition before the base time.
|
|
* @param base The base time.
|
|
* @param inclusive Whether the base time is inclusive or not.
|
|
* @param result Receives the most recent transition before the base time.
|
|
* @return TRUE if the transition is found.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual UBool getPreviousTransition(UDate base, UBool inclusive, TimeZoneTransition& result) const;
|
|
|
|
/**
|
|
* Returns the number of <code>TimeZoneRule</code>s which represents time transitions,
|
|
* for this time zone, that is, all <code>TimeZoneRule</code>s for this time zone except
|
|
* <code>InitialTimeZoneRule</code>. The return value range is 0 or any positive value.
|
|
* @param status Receives error status code.
|
|
* @return The number of <code>TimeZoneRule</code>s representing time transitions.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual int32_t countTransitionRules(UErrorCode& status) const;
|
|
|
|
/**
|
|
* Gets the <code>InitialTimeZoneRule</code> and the set of <code>TimeZoneRule</code>
|
|
* which represent time transitions for this time zone. On successful return,
|
|
* the argument initial points to non-NULL <code>InitialTimeZoneRule</code> and
|
|
* the array trsrules is filled with 0 or multiple <code>TimeZoneRule</code>
|
|
* instances up to the size specified by trscount. The results are referencing the
|
|
* rule instance held by this time zone instance. Therefore, after this time zone
|
|
* is destructed, they are no longer available.
|
|
* @param initial Receives the initial timezone rule
|
|
* @param trsrules Receives the timezone transition rules
|
|
* @param trscount On input, specify the size of the array 'transitions' receiving
|
|
* the timezone transition rules. On output, actual number of
|
|
* rules filled in the array will be set.
|
|
* @param status Receives error status code.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual void getTimeZoneRules(const InitialTimeZoneRule*& initial,
|
|
const TimeZoneRule* trsrules[], int32_t& trscount, UErrorCode& status) const;
|
|
|
|
private:
|
|
enum { DEFAULT_VTIMEZONE_LINES = 100 };
|
|
|
|
/**
|
|
* Default constructor.
|
|
*/
|
|
VTimeZone();
|
|
static VTimeZone* createVTimeZone(VTZReader* reader);
|
|
void write(VTZWriter& writer, UErrorCode& status) const;
|
|
void write(UDate start, VTZWriter& writer, UErrorCode& status) const;
|
|
void writeSimple(UDate time, VTZWriter& writer, UErrorCode& status) const;
|
|
void load(VTZReader& reader, UErrorCode& status);
|
|
void parse(UErrorCode& status);
|
|
|
|
void writeZone(VTZWriter& w, BasicTimeZone& basictz, UVector* customProps,
|
|
UErrorCode& status) const;
|
|
|
|
void writeHeaders(VTZWriter& w, UErrorCode& status) const;
|
|
void writeFooter(VTZWriter& writer, UErrorCode& status) const;
|
|
|
|
void writeZonePropsByTime(VTZWriter& writer, UBool isDst, const UnicodeString& zonename,
|
|
int32_t fromOffset, int32_t toOffset, UDate time, UBool withRDATE,
|
|
UErrorCode& status) const;
|
|
void writeZonePropsByDOM(VTZWriter& writer, UBool isDst, const UnicodeString& zonename,
|
|
int32_t fromOffset, int32_t toOffset,
|
|
int32_t month, int32_t dayOfMonth, UDate startTime, UDate untilTime,
|
|
UErrorCode& status) const;
|
|
void writeZonePropsByDOW(VTZWriter& writer, UBool isDst, const UnicodeString& zonename,
|
|
int32_t fromOffset, int32_t toOffset,
|
|
int32_t month, int32_t weekInMonth, int32_t dayOfWeek,
|
|
UDate startTime, UDate untilTime, UErrorCode& status) const;
|
|
void writeZonePropsByDOW_GEQ_DOM(VTZWriter& writer, UBool isDst, const UnicodeString& zonename,
|
|
int32_t fromOffset, int32_t toOffset,
|
|
int32_t month, int32_t dayOfMonth, int32_t dayOfWeek,
|
|
UDate startTime, UDate untilTime, UErrorCode& status) const;
|
|
void writeZonePropsByDOW_GEQ_DOM_sub(VTZWriter& writer, int32_t month, int32_t dayOfMonth,
|
|
int32_t dayOfWeek, int32_t numDays,
|
|
UDate untilTime, int32_t fromOffset, UErrorCode& status) const;
|
|
void writeZonePropsByDOW_LEQ_DOM(VTZWriter& writer, UBool isDst, const UnicodeString& zonename,
|
|
int32_t fromOffset, int32_t toOffset,
|
|
int32_t month, int32_t dayOfMonth, int32_t dayOfWeek,
|
|
UDate startTime, UDate untilTime, UErrorCode& status) const;
|
|
void writeFinalRule(VTZWriter& writer, UBool isDst, const AnnualTimeZoneRule* rule,
|
|
int32_t fromRawOffset, int32_t fromDSTSavings,
|
|
UDate startTime, UErrorCode& status) const;
|
|
|
|
void beginZoneProps(VTZWriter& writer, UBool isDst, const UnicodeString& zonename,
|
|
int32_t fromOffset, int32_t toOffset, UDate startTime, UErrorCode& status) const;
|
|
void endZoneProps(VTZWriter& writer, UBool isDst, UErrorCode& status) const;
|
|
void beginRRULE(VTZWriter& writer, int32_t month, UErrorCode& status) const;
|
|
void appendUNTIL(VTZWriter& writer, const UnicodeString& until, UErrorCode& status) const;
|
|
|
|
BasicTimeZone *tz;
|
|
UVector *vtzlines;
|
|
UnicodeString tzurl;
|
|
UDate lastmod;
|
|
UnicodeString olsonzid;
|
|
UnicodeString icutzver;
|
|
|
|
public:
|
|
/**
|
|
* Return the class ID for this class. This is useful only for comparing to
|
|
* a return value from getDynamicClassID(). For example:
|
|
* <pre>
|
|
* . Base* polymorphic_pointer = createPolymorphicObject();
|
|
* . if (polymorphic_pointer->getDynamicClassID() ==
|
|
* . erived::getStaticClassID()) ...
|
|
* </pre>
|
|
* @return The class ID for all objects of this class.
|
|
* @stable ICU 3.8
|
|
*/
|
|
static UClassID U_EXPORT2 getStaticClassID(void);
|
|
|
|
/**
|
|
* 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.
|
|
*
|
|
* @return The class ID for this object. All objects of a
|
|
* given class have the same class ID. Objects of
|
|
* other classes have different class IDs.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual UClassID getDynamicClassID(void) const;
|
|
};
|
|
|
|
U_NAMESPACE_END
|
|
|
|
#endif /* #if !UCONFIG_NO_FORMATTING */
|
|
|
|
#endif // VTZONE_H
|
|
//eof
|
|
|