FM / unicode

/usr/include/unicode

Name	Size	Mode	Actions
basictz.h	8913	0644	edit dl rm
bms.h	8664	0644	edit dl rm
bmsearch.h	7316	0644	edit dl rm
brkiter.h	23001	0644	edit dl rm
bytestream.h	8531	0644	edit dl rm
calendar.h	90659	0644	edit dl rm
caniter.h	7288	0644	edit dl rm
chariter.h	24186	0644	edit dl rm
choicfmt.h	29528	0644	edit dl rm
coleitr.h	12990	0644	edit dl rm
coll.h	48468	0644	edit dl rm
colldata.h	11957	0644	edit dl rm
curramt.h	3659	0644	edit dl rm
currpinf.h	7061	0644	edit dl rm
currunit.h	3057	0644	edit dl rm
datefmt.h	27946	0644	edit dl rm
dbbi.h	966	0644	edit dl rm
dcfmtsym.h	14040	0644	edit dl rm
decimfmt.h	88612	0644	edit dl rm
docmain.h	6003	0644	edit dl rm
dtfmtsym.h	26145	0644	edit dl rm
dtintrv.h	3734	0644	edit dl rm
dtitvfmt.h	39700	0644	edit dl rm
dtitvinf.h	18704	0644	edit dl rm
dtptngen.h	17303	0644	edit dl rm
dtrule.h	8718	0644	edit dl rm
errorcode.h	4361	0644	edit dl rm
fieldpos.h	8713	0644	edit dl rm
fmtable.h	18794	0644	edit dl rm
format.h	12083	0644	edit dl rm
gregocal.h	33797	0644	edit dl rm
locid.h	30241	0644	edit dl rm
measfmt.h	1897	0644	edit dl rm
measunit.h	1635	0644	edit dl rm
measure.h	3321	0644	edit dl rm
msgfmt.h	39435	0644	edit dl rm
normlzr.h	30337	0644	edit dl rm
numfmt.h	33987	0644	edit dl rm
numsys.h	5004	0644	edit dl rm
parseerr.h	3044	0644	edit dl rm
parsepos.h	5468	0644	edit dl rm
platform.h	9961	0644	edit dl rm
plurfmt.h	23079	0644	edit dl rm
plurrule.h	9901	0644	edit dl rm
ppalmos.h	6992	0644	edit dl rm
putil.h	6686	0644	edit dl rm
pwin32.h	8668	0644	edit dl rm
rbbi.h	26993	0644	edit dl rm
rbnf.h	45681	0644	edit dl rm
rbtz.h	15695	0644	edit dl rm
regex.h	52316	0644	edit dl rm
rep.h	9559	0644	edit dl rm
resbund.h	18130	0644	edit dl rm
schriter.h	6293	0644	edit dl rm
search.h	22357	0644	edit dl rm
simpletz.h	46179	0644	edit dl rm
smpdtfmt.h	48325	0644	edit dl rm
sortkey.h	11111	0644	edit dl rm
std_string.h	1769	0644	edit dl rm
strenum.h	9888	0644	edit dl rm
stringpiece.h	5484	0644	edit dl rm
stsearch.h	22287	0644	edit dl rm
symtable.h	4199	0644	edit dl rm
tblcoll.h	38199	0644	edit dl rm
timezone.h	34584	0644	edit dl rm
tmunit.h	3454	0644	edit dl rm
tmutamt.h	4787	0644	edit dl rm
tmutfmt.h	8669	0644	edit dl rm
translit.h	54780	0644	edit dl rm
tzrule.h	36057	0644	edit dl rm
tztrans.h	6101	0644	edit dl rm
ubidi.h	83092	0644	edit dl rm
ubrk.h	17688	0644	edit dl rm
ucal.h	40177	0644	edit dl rm
ucasemap.h	16420	0644	edit dl rm
ucat.h	5371	0644	edit dl rm
uchar.h	111062	0644	edit dl rm
uchriter.h	13132	0644	edit dl rm
uclean.h	11855	0644	edit dl rm
ucnv.h	83111	0644	edit dl rm
ucnvsel.h	5630	0644	edit dl rm
ucnv_cb.h	6635	0644	edit dl rm
ucnv_err.h	21375	0644	edit dl rm
ucol.h	48826	0644	edit dl rm
ucoleitr.h	12356	0644	edit dl rm
uconfig.h	6035	0644	edit dl rm
ucsdet.h	12464	0644	edit dl rm
ucurr.h	11572	0644	edit dl rm
udat.h	34496	0644	edit dl rm
udata.h	14265	0644	edit dl rm
udatpg.h	18715	0644	edit dl rm
udeprctd.h	2284	0644	edit dl rm
udraft.h	7600	0644	edit dl rm
uenum.h	5796	0644	edit dl rm
uidna.h	15918	0644	edit dl rm
uintrnal.h	15752	0644	edit dl rm
uiter.h	23234	0644	edit dl rm
uloc.h	44548	0644	edit dl rm
ulocdata.h	9739	0644	edit dl rm
umachine.h	11360	0644	edit dl rm
umisc.h	1255	0644	edit dl rm
umsg.h	26076	0644	edit dl rm
unifilt.h	3770	0644	edit dl rm
unifunct.h	3966	0644	edit dl rm
unimatch.h	6071	0644	edit dl rm
unirepl.h	3290	0644	edit dl rm
uniset.h	61771	0644	edit dl rm
unistr.h	161321	0644	edit dl rm
unorm.h	23621	0644	edit dl rm
unum.h	32145	0644	edit dl rm
uobject.h	11393	0644	edit dl rm
uobslete.h	852	0644	edit dl rm
uregex.h	43948	0644	edit dl rm
urename.h	92538	0644	edit dl rm
urep.h	5394	0644	edit dl rm
ures.h	36348	0644	edit dl rm
uscript.h	11360	0644	edit dl rm
usearch.h	34223	0644	edit dl rm
uset.h	39868	0644	edit dl rm
usetiter.h	9606	0644	edit dl rm
ushape.h	17907	0644	edit dl rm
uspoof.h	38752	0644	edit dl rm
usprep.h	7750	0644	edit dl rm
ustdio.h	35333	0644	edit dl rm
ustream.h	1891	0644	edit dl rm
ustring.h	69383	0644	edit dl rm
usystem.h	1925	0644	edit dl rm
utext.h	58394	0644	edit dl rm
utf.h	8273	0644	edit dl rm
utf8.h	20512	0644	edit dl rm
utf16.h	18776	0644	edit dl rm
utf32.h	653	0644	edit dl rm
utf_old.h	43646	0644	edit dl rm
utmscale.h	13689	0644	edit dl rm
utrace.h	13355	0644	edit dl rm
utrans.h	23129	0644	edit dl rm
utypes.h	34513	0644	edit dl rm
uversion.h	10902	0644	edit dl rm
vtzone.h	20048	0644	edit dl rm

Edit: /usr/include/unicode/timezone.h (34584B)

/*************************************************************************
* Copyright (c) 1997-2009, 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.
 *
 * 
 * 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.
 *
 * 
 * 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 US Pacific
 * Time zone is "America/Los_Angeles". So, you can get a Pacific Time <code>TimeZone</code> object
 * with:
 * \htmlonly<blockquote>\endhtmlonly
 * <pre>
 * TimeZone *tz = TimeZone::createTimeZone("America/Los_Angeles");
 * </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.)
 * 
 * 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, US Pacific
 * 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/Los_Angeles").
 * Anywhere the API requires an ID, you can use either form.
 * 
 * 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().
 * 
 * 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>, 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.
 * 
 * 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.
 *
 * 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 time zone 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.
 *
 * 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.
 *
 * 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 time zone 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.
 *
 * 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.
 *
 * 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.
 *
 * 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 3.8
     */
    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 time zone ID to be canonicalized.
     * @param canonicalID   Receives the canonical system time zone ID
     *                      or the custom time zone ID in normalized format.
     * @param status        Recevies the status.  When the given time zone ID
     *                      is neither a known system time zone ID nor a
     *                      valid custom time zone ID, U_ILLEGAL_ARGUMENT_ERROR
     *                      is set.
     * @return A reference to the result.
     * @stable ICU 4.0
     */
    static UnicodeString& U_EXPORT2 getCanonicalID(const UnicodeString& id,
        UnicodeString& canonicalID, UErrorCode& status);

/**
     * Returns the canonical system time zone ID or the normalized
     * custom time zone ID for the given time zone ID.
     * @param id            The input time zone ID to be canonicalized.
     * @param canonicalID   Receives the canonical system time zone ID
     *                      or the custom time zone ID in normalized format.
     * @param isSystemID    Receives if the given ID is a known system
     *                      time zone ID.
     * @param status        Recevies the status.  When the given time zone ID
     *                      is neither a known system time zone ID nor a
     *                      valid custom time zone ID, U_ILLEGAL_ARGUMENT_ERROR
     *                      is set.
     * @return A reference to the result.
     * @stable 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.
 *
 * 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.
 *
 * 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 standard 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 time zone 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.
 * 
 * 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.
 * 
 * The default implementation always returns 3600000 milliseconds
 * (i.e., one hour) if this time zone observes Daylight Saving
 * Time. Otherwise, 0 (zero) is returned.
 * 
 * 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 time zone 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

cmd: