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Posted to commits@couchdb.apache.org by da...@apache.org on 2014/02/06 18:28:09 UTC
[27/46] support static build
http://git-wip-us.apache.org/repos/asf/couchdb-couch-collate/blob/32ffa429/platform/osx/icu/unicode/timezone.h
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diff --git a/platform/osx/icu/unicode/timezone.h b/platform/osx/icu/unicode/timezone.h
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+/*************************************************************************
+* Copyright (c) 1997-2008, International Business Machines Corporation
+* and others. All Rights Reserved.
+**************************************************************************
+*
+* File TIMEZONE.H
+*
+* Modification History:
+*
+* Date Name Description
+* 04/21/97 aliu Overhauled header.
+* 07/09/97 helena Changed createInstance to createDefault.
+* 08/06/97 aliu Removed dependency on internal header for Hashtable.
+* 08/10/98 stephen Changed getDisplayName() API conventions to match
+* 08/19/98 stephen Changed createTimeZone() to never return 0
+* 09/02/98 stephen Sync to JDK 1.2 8/31
+* - Added getOffset(... monthlen ...)
+* - Added hasSameRules()
+* 09/15/98 stephen Added getStaticClassID
+* 12/03/99 aliu Moved data out of static table into icudata.dll.
+* Hashtable replaced by new static data structures.
+* 12/14/99 aliu Made GMT public.
+* 08/15/01 grhoten Made GMT private and added the getGMT() function
+**************************************************************************
+*/
+
+#ifndef TIMEZONE_H
+#define TIMEZONE_H
+
+#include "unicode/utypes.h"
+
+/**
+ * \file
+ * \brief C++ API: TimeZone object
+ */
+
+#if !UCONFIG_NO_FORMATTING
+
+#include "unicode/uobject.h"
+#include "unicode/unistr.h"
+#include "unicode/ures.h"
+
+U_NAMESPACE_BEGIN
+
+class StringEnumeration;
+
+/**
+ *
+ * <code>TimeZone</code> represents a time zone offset, and also figures out daylight
+ * savings.
+ *
+ * <p>
+ * Typically, you get a <code>TimeZone</code> using <code>createDefault</code>
+ * which creates a <code>TimeZone</code> based on the time zone where the program
+ * is running. For example, for a program running in Japan, <code>createDefault</code>
+ * creates a <code>TimeZone</code> object based on Japanese Standard Time.
+ *
+ * <p>
+ * You can also get a <code>TimeZone</code> using <code>createTimeZone</code> along
+ * with a time zone ID. For instance, the time zone ID for the Pacific
+ * Standard Time zone is "PST". So, you can get a PST <code>TimeZone</code> object
+ * with:
+ * \htmlonly<blockquote>\endhtmlonly
+ * <pre>
+ * TimeZone *tz = TimeZone::createTimeZone("PST");
+ * </pre>
+ * \htmlonly</blockquote>\endhtmlonly
+ * You can use <code>getAvailableIDs</code> method to iterate through
+ * all the supported time zone IDs. You can then choose a
+ * supported ID to get a <code>TimeZone</code>.
+ * If the time zone you want is not represented by one of the
+ * supported IDs, then you can create a custom time zone ID with
+ * the following syntax:
+ *
+ * \htmlonly<blockquote>\endhtmlonly
+ * <pre>
+ * GMT[+|-]hh[[:]mm]
+ * </pre>
+ * \htmlonly</blockquote>\endhtmlonly
+ *
+ * For example, you might specify GMT+14:00 as a custom
+ * time zone ID. The <code>TimeZone</code> that is returned
+ * when you specify a custom time zone ID does not include
+ * daylight savings time.
+ *
+ * TimeZone is an abstract class representing a time zone. A TimeZone is needed for
+ * Calendar to produce local time for a particular time zone. A TimeZone comprises
+ * three basic pieces of information:
+ * <ul>
+ * <li>A time zone offset; that, is the number of milliseconds to add or subtract
+ * from a time expressed in terms of GMT to convert it to the same time in that
+ * time zone (without taking daylight savings time into account).</li>
+ * <li>Logic necessary to take daylight savings time into account if daylight savings
+ * time is observed in that time zone (e.g., the days and hours on which daylight
+ * savings time begins and ends).</li>
+ * <li>An ID. This is a text string that uniquely identifies the time zone.</li>
+ * </ul>
+ *
+ * (Only the ID is actually implemented in TimeZone; subclasses of TimeZone may handle
+ * daylight savings time and GMT offset in different ways. Currently we only have one
+ * TimeZone subclass: SimpleTimeZone.)
+ * <P>
+ * The TimeZone class contains a static list containing a TimeZone object for every
+ * combination of GMT offset and daylight-savings time rules currently in use in the
+ * world, each with a unique ID. Each ID consists of a region (usually a continent or
+ * ocean) and a city in that region, separated by a slash, (for example, Pacific
+ * Standard Time is "America/Los_Angeles.") Because older versions of this class used
+ * three- or four-letter abbreviations instead, there is also a table that maps the older
+ * abbreviations to the newer ones (for example, "PST" maps to "America/LosAngeles").
+ * Anywhere the API requires an ID, you can use either form.
+ * <P>
+ * To create a new TimeZone, you call the factory function TimeZone::createTimeZone()
+ * and pass it a time zone ID. You can use the createEnumeration() function to
+ * obtain a list of all the time zone IDs recognized by createTimeZone().
+ * <P>
+ * You can also use TimeZone::createDefault() to create a TimeZone. This function uses
+ * platform-specific APIs to produce a TimeZone for the time zone corresponding to
+ * the client's computer's physical location. For example, if you're in Japan (assuming
+ * your machine is set up correctly), TimeZone::createDefault() will return a TimeZone
+ * for Japanese Standard Time ("Asia/Tokyo").
+ */
+class U_I18N_API TimeZone : public UObject {
+public:
+ /**
+ * @stable ICU 2.0
+ */
+ virtual ~TimeZone();
+
+ /**
+ * The GMT time zone has a raw offset of zero and does not use daylight
+ * savings time. This is a commonly used time zone.
+ * @return the GMT time zone.
+ * @stable ICU 2.0
+ */
+ static const TimeZone* U_EXPORT2 getGMT(void);
+
+ /**
+ * Creates a <code>TimeZone</code> for the given ID.
+ * @param ID the ID for a <code>TimeZone</code>, either an abbreviation such as
+ * "PST", a full name such as "America/Los_Angeles", or a custom ID
+ * such as "GMT-8:00".
+ * @return the specified <code>TimeZone</code>, or the GMT zone if the given ID
+ * cannot be understood. Return result guaranteed to be non-null. If you
+ * require that the specific zone asked for be returned, check the ID of the
+ * return result.
+ * @stable ICU 2.0
+ */
+ static TimeZone* U_EXPORT2 createTimeZone(const UnicodeString& ID);
+
+ /**
+ * Returns an enumeration over all recognized time zone IDs. (i.e.,
+ * all strings that createTimeZone() accepts)
+ *
+ * @return an enumeration object, owned by the caller.
+ * @stable ICU 2.4
+ */
+ static StringEnumeration* U_EXPORT2 createEnumeration();
+
+ /**
+ * Returns an enumeration over time zone IDs with a given raw
+ * offset from GMT. There may be several times zones with the
+ * same GMT offset that differ in the way they handle daylight
+ * savings time. For example, the state of Arizona doesn't
+ * observe daylight savings time. If you ask for the time zone
+ * IDs corresponding to GMT-7:00, you'll get back an enumeration
+ * over two time zone IDs: "America/Denver," which corresponds to
+ * Mountain Standard Time in the winter and Mountain Daylight Time
+ * in the summer, and "America/Phoenix", which corresponds to
+ * Mountain Standard Time year-round, even in the summer.
+ *
+ * @param rawOffset an offset from GMT in milliseconds, ignoring
+ * the effect of daylight savings time, if any
+ * @return an enumeration object, owned by the caller
+ * @stable ICU 2.4
+ */
+ static StringEnumeration* U_EXPORT2 createEnumeration(int32_t rawOffset);
+
+ /**
+ * Returns an enumeration over time zone IDs associated with the
+ * given country. Some zones are affiliated with no country
+ * (e.g., "UTC"); these may also be retrieved, as a group.
+ *
+ * @param country The ISO 3166 two-letter country code, or NULL to
+ * retrieve zones not affiliated with any country.
+ * @return an enumeration object, owned by the caller
+ * @stable ICU 2.4
+ */
+ static StringEnumeration* U_EXPORT2 createEnumeration(const char* country);
+
+#ifdef U_USE_TIMEZONE_OBSOLETE_2_8
+ /**
+ * Returns a list of time zone IDs, one for each time zone with a given GMT offset.
+ * The return value is a list because there may be several times zones with the same
+ * GMT offset that differ in the way they handle daylight savings time. For example,
+ * the state of Arizona doesn't observe Daylight Savings time. So if you ask for
+ * the time zone IDs corresponding to GMT-7:00, you'll get back two time zone IDs:
+ * "America/Denver," which corresponds to Mountain Standard Time in the winter and
+ * Mountain Daylight Time in the summer, and "America/Phoenix", which corresponds to
+ * Mountain Standard Time year-round, even in the summer.
+ * <P>
+ * The caller owns the list that is returned, but does not own the strings contained
+ * in that list. Delete the array with uprv_free(), but DON'T delete the elements in the array.
+ *
+ * <p>NOTE: uprv_free() is declared in the private header source/common/cmemory.h.
+ *
+ * @param rawOffset An offset from GMT in milliseconds.
+ * @param numIDs Receives the number of items in the array that is returned.
+ * @return An array of UnicodeString pointers, where each UnicodeString is
+ * a time zone ID for a time zone with the given GMT offset. If
+ * there is no timezone that matches the GMT offset
+ * specified, NULL is returned.
+ * @obsolete ICU 2.8. Use createEnumeration(int32_t) instead since this API will be removed in that release.
+ */
+ static const UnicodeString** createAvailableIDs(int32_t rawOffset, int32_t& numIDs);
+
+ /**
+ * Returns a list of time zone IDs associated with the given
+ * country. Some zones are affiliated with no country (e.g.,
+ * "UTC"); these may also be retrieved, as a group.
+ *
+ * <P>The caller owns the list that is returned, but does not own
+ * the strings contained in that list. Delete the array with uprv_free(), but
+ * <b>DON'T</b> delete the elements in the array.
+ *
+ * <p>NOTE: uprv_free() is declared in the private header source/common/cmemory.h.
+ *
+ * @param country The ISO 3166 two-letter country code, or NULL to
+ * retrieve zones not affiliated with any country.
+ * @param numIDs Receives the number of items in the array that is
+ * returned.
+ * @return An array of UnicodeString pointers, where each
+ * UnicodeString is a time zone ID for a time zone with the given
+ * country. If there is no timezone that matches the country
+ * specified, NULL is returned.
+ * @obsolete ICU 2.8. Use createEnumeration(const char*) instead since this API will be removed in that release.
+ */
+ static const UnicodeString** createAvailableIDs(const char* country,
+ int32_t& numIDs);
+
+ /**
+ * Returns a list of all time zone IDs supported by the TimeZone class (i.e., all
+ * IDs that it's legal to pass to createTimeZone()). The caller owns the list that
+ * is returned, but does not own the strings contained in that list. Delete the array with uprv_free(),
+ * but DON'T delete the elements in the array.
+ *
+ * <p>NOTE: uprv_free() is declared in the private header source/common/cmemory.h.
+ *
+ * @param numIDs Receives the number of zone IDs returned.
+ * @return An array of UnicodeString pointers, where each is a time zone ID
+ * supported by the TimeZone class.
+ * @obsolete ICU 2.8. Use createEnumeration(void) instead since this API will be removed in that release.
+ */
+ static const UnicodeString** createAvailableIDs(int32_t& numIDs);
+#endif
+
+ /**
+ * Returns the number of IDs in the equivalency group that
+ * includes the given ID. An equivalency group contains zones
+ * that have the same GMT offset and rules.
+ *
+ * <p>The returned count includes the given ID; it is always >= 1.
+ * The given ID must be a system time zone. If it is not, returns
+ * zero.
+ * @param id a system time zone ID
+ * @return the number of zones in the equivalency group containing
+ * 'id', or zero if 'id' is not a valid system ID
+ * @see #getEquivalentID
+ * @stable ICU 2.0
+ */
+ static int32_t U_EXPORT2 countEquivalentIDs(const UnicodeString& id);
+
+ /**
+ * Returns an ID in the equivalency group that
+ * includes the given ID. An equivalency group contains zones
+ * that have the same GMT offset and rules.
+ *
+ * <p>The given index must be in the range 0..n-1, where n is the
+ * value returned by <code>countEquivalentIDs(id)</code>. For
+ * some value of 'index', the returned value will be equal to the
+ * given id. If the given id is not a valid system time zone, or
+ * if 'index' is out of range, then returns an empty string.
+ * @param id a system time zone ID
+ * @param index a value from 0 to n-1, where n is the value
+ * returned by <code>countEquivalentIDs(id)</code>
+ * @return the ID of the index-th zone in the equivalency group
+ * containing 'id', or an empty string if 'id' is not a valid
+ * system ID or 'index' is out of range
+ * @see #countEquivalentIDs
+ * @stable ICU 2.0
+ */
+ static const UnicodeString U_EXPORT2 getEquivalentID(const UnicodeString& id,
+ int32_t index);
+
+ /**
+ * Creates a new copy of the default TimeZone for this host. Unless the default time
+ * zone has already been set using adoptDefault() or setDefault(), the default is
+ * determined by querying the system using methods in TPlatformUtilities. If the
+ * system routines fail, or if they specify a TimeZone or TimeZone offset which is not
+ * recognized, the TimeZone indicated by the ID kLastResortID is instantiated
+ * and made the default.
+ *
+ * @return A default TimeZone. Clients are responsible for deleting the time zone
+ * object returned.
+ * @stable ICU 2.0
+ */
+ static TimeZone* U_EXPORT2 createDefault(void);
+
+ /**
+ * Sets the default time zone (i.e., what's returned by createDefault()) to be the
+ * specified time zone. If NULL is specified for the time zone, the default time
+ * zone is set to the default host time zone. This call adopts the TimeZone object
+ * passed in; the clent is no longer responsible for deleting it.
+ *
+ * @param zone A pointer to the new TimeZone object to use as the default.
+ * @stable ICU 2.0
+ */
+ static void U_EXPORT2 adoptDefault(TimeZone* zone);
+
+ /**
+ * Same as adoptDefault(), except that the TimeZone object passed in is NOT adopted;
+ * the caller remains responsible for deleting it.
+ *
+ * @param zone The given timezone.
+ * @system
+ */
+ static void U_EXPORT2 setDefault(const TimeZone& zone);
+
+ /**
+ * Returns the timezone data version currently used by ICU.
+ * @param status Output param to filled in with a success or an error.
+ * @return the version string, such as "2007f"
+ * @stable ICU 4.0
+ */
+ static const char* U_EXPORT2 getTZDataVersion(UErrorCode& status);
+
+ /**
+ * Returns the canonical system timezone ID or the normalized
+ * custom time zone ID for the given time zone ID.
+ * @param id The input timezone ID to be canonicalized.
+ * @param canonicalID Receives the canonical system timezone ID
+ * or the custom timezone ID in normalized format.
+ * @param status Recevies the status. When the given timezone ID
+ * is neither a known system time zone ID nor a
+ * valid custom timezone ID, U_ILLEGAL_ARGUMENT_ERROR
+ * is set.
+ * @return A reference to the result.
+ * @draft ICU 4.0
+ */
+ static UnicodeString& U_EXPORT2 getCanonicalID(const UnicodeString& id,
+ UnicodeString& canonicalID, UErrorCode& status);
+
+ /**
+ * Returns the canonical system timezone ID or the normalized
+ * custom time zone ID for the given time zone ID.
+ * @param id The input timezone ID to be canonicalized.
+ * @param canonicalID Receives the canonical system timezone ID
+ * or the custom timezone ID in normalized format.
+ * @param isSystemID Receives if the given ID is a known system
+ * timezone ID.
+ * @param status Recevies the status. When the given timezone ID
+ * is neither a known system time zone ID nor a
+ * valid custom timezone ID, U_ILLEGAL_ARGUMENT_ERROR
+ * is set.
+ * @return A reference to the result.
+ * @draft ICU 4.0
+ */
+ static UnicodeString& U_EXPORT2 getCanonicalID(const UnicodeString& id,
+ UnicodeString& canonicalID, UBool& isSystemID, UErrorCode& status);
+
+ /**
+ * Returns true if the two TimeZones are equal. (The TimeZone version only compares
+ * IDs, but subclasses are expected to also compare the fields they add.)
+ *
+ * @param that The TimeZone object to be compared with.
+ * @return True if the given TimeZone is equal to this TimeZone; false
+ * otherwise.
+ * @stable ICU 2.0
+ */
+ virtual UBool operator==(const TimeZone& that) const;
+
+ /**
+ * Returns true if the two TimeZones are NOT equal; that is, if operator==() returns
+ * false.
+ *
+ * @param that The TimeZone object to be compared with.
+ * @return True if the given TimeZone is not equal to this TimeZone; false
+ * otherwise.
+ * @stable ICU 2.0
+ */
+ UBool operator!=(const TimeZone& that) const {return !operator==(that);}
+
+ /**
+ * 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 2.0
+ */
+ 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 = 0;
+
+ /**
+ * 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 era of the given date.
+ * @param year the year in the given date.
+ * @param month the month in the given date.
+ * Month is 0-based. e.g., 0 for January.
+ * @param day the day-in-month of the given date.
+ * @param dayOfWeek the day-of-week of the given date.
+ * @param milliseconds the millis in day in <em>standard</em> local 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 to add *to* GMT to get local time.
+ * @stable ICU 2.0
+ */
+ virtual int32_t getOffset(uint8_t era, int32_t year, int32_t month, int32_t day,
+ uint8_t dayOfWeek, int32_t milliseconds,
+ int32_t monthLength, UErrorCode& status) const = 0;
+
+ /**
+ * 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 2.8
+ */
+ 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 2.0
+ */
+ virtual void setRawOffset(int32_t offsetMillis) = 0;
+
+ /**
+ * 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 2.0
+ */
+ virtual int32_t getRawOffset(void) const = 0;
+
+ /**
+ * Fills in "ID" with the TimeZone's ID.
+ *
+ * @param ID Receives this TimeZone's ID.
+ * @return A reference to 'ID'
+ * @stable ICU 2.0
+ */
+ UnicodeString& getID(UnicodeString& ID) const;
+
+ /**
+ * Sets the TimeZone's ID to the specified value. This doesn't affect any other
+ * fields (for example, if you say<
+ * blockquote><pre>
+ * . TimeZone* foo = TimeZone::createTimeZone("America/New_York");
+ * . foo.setID("America/Los_Angeles");
+ * </pre>\htmlonly</blockquote>\endhtmlonly
+ * the time zone's GMT offset and daylight-savings rules don't change to those for
+ * Los Angeles. They're still those for New York. Only the ID has changed.)
+ *
+ * @param ID The new timezone ID.
+ * @stable ICU 2.0
+ */
+ void setID(const UnicodeString& ID);
+
+ /**
+ * Enum for use with getDisplayName
+ * @stable ICU 2.4
+ */
+ enum EDisplayType {
+ /**
+ * Selector for short display name
+ * @stable ICU 2.4
+ */
+ SHORT = 1,
+ /**
+ * Selector for long display name
+ * @stable ICU 2.4
+ */
+ LONG
+ };
+
+ /**
+ * Returns a name of this time zone suitable for presentation to the user
+ * in the default locale.
+ * This method returns the long name, not including daylight savings.
+ * If the display name is not available for the locale,
+ * then this method returns a string in the format
+ * <code>GMT[+-]hh:mm</code>.
+ * @param result the human-readable name of this time zone in the default locale.
+ * @return A reference to 'result'.
+ * @stable ICU 2.0
+ */
+ UnicodeString& getDisplayName(UnicodeString& result) const;
+
+ /**
+ * Returns a name of this time zone suitable for presentation to the user
+ * in the specified locale.
+ * This method returns the long name, not including daylight savings.
+ * If the display name is not available for the locale,
+ * then this method returns a string in the format
+ * <code>GMT[+-]hh:mm</code>.
+ * @param locale the locale in which to supply the display name.
+ * @param result the human-readable name of this time zone in the given locale
+ * or in the default locale if the given locale is not recognized.
+ * @return A reference to 'result'.
+ * @stable ICU 2.0
+ */
+ UnicodeString& getDisplayName(const Locale& locale, UnicodeString& result) const;
+
+ /**
+ * Returns a name of this time zone suitable for presentation to the user
+ * in the default locale.
+ * If the display name is not available for the locale,
+ * then this method returns a string in the format
+ * <code>GMT[+-]hh:mm</code>.
+ * @param daylight if true, return the daylight savings name.
+ * @param style either <code>LONG</code> or <code>SHORT</code>
+ * @param result the human-readable name of this time zone in the default locale.
+ * @return A reference to 'result'.
+ * @stable ICU 2.0
+ */
+ UnicodeString& getDisplayName(UBool daylight, EDisplayType style, UnicodeString& result) const;
+
+ /**
+ * Returns a name of this time zone suitable for presentation to the user
+ * in the specified locale.
+ * If the display name is not available for the locale,
+ * then this method returns a string in the format
+ * <code>GMT[+-]hh:mm</code>.
+ * @param daylight if true, return the daylight savings name.
+ * @param style either <code>LONG</code> or <code>SHORT</code>
+ * @param locale the locale in which to supply the display name.
+ * @param result the human-readable name of this time zone in the given locale
+ * or in the default locale if the given locale is not recognized.
+ * @return A refence to 'result'.
+ * @stable ICU 2.0
+ */
+ UnicodeString& getDisplayName(UBool daylight, EDisplayType style, const Locale& locale, UnicodeString& result) const;
+
+ /**
+ * Queries if this time zone uses daylight savings time.
+ * @return true if this time zone uses daylight savings time,
+ * false, otherwise.
+ * @stable ICU 2.0
+ */
+ virtual UBool useDaylightTime(void) const = 0;
+
+ /**
+ * 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 = 0;
+
+ /**
+ * 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 2.0
+ */
+ virtual UBool hasSameRules(const TimeZone& other) const;
+
+ /**
+ * Clones TimeZone objects polymorphically. Clients are responsible for deleting
+ * the TimeZone object cloned.
+ *
+ * @return A new copy of this TimeZone object.
+ * @stable ICU 2.0
+ */
+ virtual TimeZone* clone(void) const = 0;
+
+ /**
+ * Return the class ID for this class. This is useful only for
+ * comparing to a return value from getDynamicClassID().
+ * @return The class ID for all objects of this class.
+ * @stable ICU 2.0
+ */
+ static UClassID U_EXPORT2 getStaticClassID(void);
+
+ /**
+ * Returns a unique class ID POLYMORPHICALLY. 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.
+ * <P>
+ * Concrete subclasses of TimeZone must use the UOBJECT_DEFINE_RTTI_IMPLEMENTATION
+ * macro from uobject.h in their implementation to provide correct RTTI information.
+ * @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 2.0
+ */
+ virtual UClassID getDynamicClassID(void) const = 0;
+
+ /**
+ * Returns the amount of time to be added to local standard time
+ * to get local wall clock time.
+ * <p>
+ * The default implementation always returns 3600000 milliseconds
+ * (i.e., one hour) if this time zone observes Daylight Saving
+ * Time. Otherwise, 0 (zero) is returned.
+ * <p>
+ * If an underlying TimeZone implementation subclass supports
+ * historical Daylight Saving Time changes, this method returns
+ * the known latest daylight saving value.
+ *
+ * @return the amount of saving time in milliseconds
+ * @stable ICU 3.6
+ */
+ virtual int32_t getDSTSavings() const;
+
+protected:
+
+ /**
+ * Default constructor. ID is initialized to the empty string.
+ * @stable ICU 2.0
+ */
+ TimeZone();
+
+ /**
+ * Construct a timezone with a given ID.
+ * @param id a system time zone ID
+ * @stable ICU 2.0
+ */
+ TimeZone(const UnicodeString &id);
+
+ /**
+ * Copy constructor.
+ * @param source the object to be copied.
+ * @stable ICU 2.0
+ */
+ TimeZone(const TimeZone& source);
+
+ /**
+ * Default assignment operator.
+ * @param right the object to be copied.
+ * @stable ICU 2.0
+ */
+ TimeZone& operator=(const TimeZone& right);
+
+ /**
+ * Utility function. For internally loading rule data.
+ * @param top Top resource bundle for tz data
+ * @param ruleid ID of rule to load
+ * @param oldbundle Old bundle to reuse or NULL
+ * @param status Status parameter
+ * @return either a new bundle or *oldbundle
+ * @internal
+ */
+ static UResourceBundle* loadRule(const UResourceBundle* top, const UnicodeString& ruleid, UResourceBundle* oldbundle, UErrorCode&status);
+
+private:
+ friend class ZoneMeta;
+
+
+ static TimeZone* createCustomTimeZone(const UnicodeString&); // Creates a time zone based on the string.
+
+ /**
+ * Resolve a link in Olson tzdata. When the given id is known and it's not a link,
+ * the id itself is returned. When the given id is known and it is a link, then
+ * dereferenced zone id is returned. When the given id is unknown, then it returns
+ * empty string.
+ * @param linkTo Input zone id string
+ * @param linkFrom Receives the dereferenced zone id string
+ * @return The reference to the result (linkFrom)
+ */
+ static UnicodeString& dereferOlsonLink(const UnicodeString& linkTo, UnicodeString& linkFrom);
+
+ /**
+ * Parses the given custom time zone identifier
+ * @param id id A string of the form GMT[+-]hh:mm, GMT[+-]hhmm, or
+ * GMT[+-]hh.
+ * @param sign Receves parsed sign, 1 for positive, -1 for negative.
+ * @param hour Receives parsed hour field
+ * @param minute Receives parsed minute field
+ * @param second Receives parsed second field
+ * @return Returns TRUE when the given custom id is valid.
+ */
+ static UBool parseCustomID(const UnicodeString& id, int32_t& sign, int32_t& hour,
+ int32_t& min, int32_t& sec);
+
+ /**
+ * Parse a custom time zone identifier and return the normalized
+ * custom time zone identifier for the given custom id string.
+ * @param id a string of the form GMT[+-]hh:mm, GMT[+-]hhmm, or
+ * GMT[+-]hh.
+ * @param normalized Receives the normalized custom ID
+ * @param status Receives the status. When the input ID string is invalid,
+ * U_ILLEGAL_ARGUMENT_ERROR is set.
+ * @return The normalized custom id string.
+ */
+ static UnicodeString& getCustomID(const UnicodeString& id, UnicodeString& normalized,
+ UErrorCode& status);
+
+ /**
+ * Returns the normalized custome timezone ID for the given offset fields.
+ * @param hour offset hours
+ * @param min offset minutes
+ * @param sec offset seconds
+ * @param netative sign of the offset, TRUE for negative offset.
+ * @param id Receves the format result (normalized custom ID)
+ * @return The reference to id
+ */
+ static UnicodeString& formatCustomID(int32_t hour, int32_t min, int32_t sec,
+ UBool negative, UnicodeString& id);
+
+ /**
+ * Responsible for setting up DEFAULT_ZONE. Uses routines in TPlatformUtilities
+ * (i.e., platform-specific calls) to get the current system time zone. Failing
+ * that, uses the platform-specific default time zone. Failing that, uses GMT.
+ */
+ static void initDefault(void);
+
+ // See source file for documentation
+ /**
+ * Lookup the given name in our system zone table. If found,
+ * instantiate a new zone of that name and return it. If not
+ * found, return 0.
+ * @param name tthe given name of a system time zone.
+ * @return the timezone indicated by the 'name'.
+ */
+ static TimeZone* createSystemTimeZone(const UnicodeString& name);
+
+ UnicodeString fID; // this time zone's ID
+};
+
+
+// -------------------------------------
+
+inline UnicodeString&
+TimeZone::getID(UnicodeString& ID) const
+{
+ ID = fID;
+ return ID;
+}
+
+// -------------------------------------
+
+inline void
+TimeZone::setID(const UnicodeString& ID)
+{
+ fID = ID;
+}
+U_NAMESPACE_END
+
+#endif /* #if !UCONFIG_NO_FORMATTING */
+
+#endif //_TIMEZONE
+//eof