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timezone.h
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1 /*************************************************************************
2 * Copyright (c) 1997-2015, International Business Machines Corporation
3 * and others. All Rights Reserved.
4 **************************************************************************
5 *
6 * File TIMEZONE.H
7 *
8 * Modification History:
9 *
10 * Date Name Description
11 * 04/21/97 aliu Overhauled header.
12 * 07/09/97 helena Changed createInstance to createDefault.
13 * 08/06/97 aliu Removed dependency on internal header for Hashtable.
14 * 08/10/98 stephen Changed getDisplayName() API conventions to match
15 * 08/19/98 stephen Changed createTimeZone() to never return 0
16 * 09/02/98 stephen Sync to JDK 1.2 8/31
17 * - Added getOffset(... monthlen ...)
18 * - Added hasSameRules()
19 * 09/15/98 stephen Added getStaticClassID
20 * 12/03/99 aliu Moved data out of static table into icudata.dll.
21 * Hashtable replaced by new static data structures.
22 * 12/14/99 aliu Made GMT public.
23 * 08/15/01 grhoten Made GMT private and added the getGMT() function
24 **************************************************************************
25 */
26
27 #ifndef TIMEZONE_H
28 #define TIMEZONE_H
29
30 #include "unicode/utypes.h"
31
37 #if !UCONFIG_NO_FORMATTING
38
39 #include "unicode/uobject.h"
40 #include "unicode/unistr.h"
41 #include "unicode/ures.h"
42 #include "unicode/ucal.h"
43
44 U_NAMESPACE_BEGIN
45
46 class StringEnumeration;
47
129 class U_I18N_API TimeZone : public UObject {
130 public:
134 virtual ~TimeZone();
135
148 static const TimeZone& U_EXPORT2 getUnknown();
149
162 static const TimeZone* U_EXPORT2 getGMT(void);
163
175 static TimeZone* U_EXPORT2 createTimeZone(const UnicodeString& ID);
176
192 static StringEnumeration* U_EXPORT2 createTimeZoneIDEnumeration(
193 USystemTimeZoneType zoneType,
194 const char* region,
195 const int32_t* rawOffset,
196 UErrorCode& ec);
197
205 static StringEnumeration* U_EXPORT2 createEnumeration();
206
224 static StringEnumeration* U_EXPORT2 createEnumeration(int32_t rawOffset);
225
236 static StringEnumeration* U_EXPORT2 createEnumeration(const char* country);
237
252 static int32_t U_EXPORT2 countEquivalentIDs(const UnicodeString& id);
253
273 static const UnicodeString U_EXPORT2 getEquivalentID(const UnicodeString& id,
274 int32_t index);
275
276 #ifndef U_HIDE_DRAFT_API
277
290 static TimeZone* U_EXPORT2 detectHostTimeZone();
291 #endif
292
305 static TimeZone* U_EXPORT2 createDefault(void);
306
320 static void U_EXPORT2 adoptDefault(TimeZone* zone);
321
322 #ifndef U_HIDE_SYSTEM_API
323
333 static void U_EXPORT2 setDefault(const TimeZone& zone);
334 #endif /* U_HIDE_SYSTEM_API */
335
342 static const char* U_EXPORT2 getTZDataVersion(UErrorCode& status);
343
357 static UnicodeString& U_EXPORT2 getCanonicalID(const UnicodeString& id,
358 UnicodeString& canonicalID, UErrorCode& status);
359
375 static UnicodeString& U_EXPORT2 getCanonicalID(const UnicodeString& id,
376 UnicodeString& canonicalID, UBool& isSystemID, UErrorCode& status);
377
400 static UnicodeString& U_EXPORT2 getWindowsID(const UnicodeString& id,
401 UnicodeString& winid, UErrorCode& status);
402
429 static UnicodeString& U_EXPORT2 getIDForWindowsID(const UnicodeString& winid, const char* region,
430 UnicodeString& id, UErrorCode& status);
431
441 virtual UBool operator==(const TimeZone& that) const;
442
452 UBool operator!=(const TimeZone& that) const {return !operator==(that);}
453
478 virtual int32_t getOffset(uint8_t era, int32_t year, int32_t month, int32_t day,
479 uint8_t dayOfWeek, int32_t millis, UErrorCode& status) const = 0;
480
501 virtual int32_t getOffset(uint8_t era, int32_t year, int32_t month, int32_t day,
502 uint8_t dayOfWeek, int32_t milliseconds,
503 int32_t monthLength, UErrorCode& status) const = 0;
504
528 virtual void getOffset(UDate date, UBool local, int32_t& rawOffset,
529 int32_t& dstOffset, UErrorCode& ec) const;
530
538 virtual void setRawOffset(int32_t offsetMillis) = 0;
539
547 virtual int32_t getRawOffset(void) const = 0;
548
556 UnicodeString& getID(UnicodeString& ID) const;
557
571 void setID(const UnicodeString& ID);
572
577 enum EDisplayType {
582 SHORT = 1,
587 LONG,
592 SHORT_GENERIC,
597 LONG_GENERIC,
603 SHORT_GMT,
609 LONG_GMT,
615 SHORT_COMMONLY_USED,
621 GENERIC_LOCATION
622 };
623
635 UnicodeString& getDisplayName(UnicodeString& result) const;
636
650 UnicodeString& getDisplayName(const Locale& locale, UnicodeString& result) const;
651
664 UnicodeString& getDisplayName(UBool daylight, EDisplayType style, UnicodeString& result) const;
665
680 UnicodeString& getDisplayName(UBool daylight, EDisplayType style, const Locale& locale, UnicodeString& result) const;
681
716 virtual UBool useDaylightTime(void) const = 0;
717
731 virtual UBool inDaylightTime(UDate date, UErrorCode& status) const = 0;
732
741 virtual UBool hasSameRules(const TimeZone& other) const;
742
750 virtual TimeZone* clone(void) const = 0;
751
758 static UClassID U_EXPORT2 getStaticClassID(void);
759
771 virtual UClassID getDynamicClassID(void) const = 0;
772
788 virtual int32_t getDSTSavings() const;
789
807 static int32_t U_EXPORT2 getRegion(const UnicodeString& id,
808 char *region, int32_t capacity, UErrorCode& status);
809
810 protected:
811
816 TimeZone();
817
823 TimeZone(const UnicodeString &id);
824
830 TimeZone(const TimeZone& source);
831
837 TimeZone& operator=(const TimeZone& right);
838
839 #ifndef U_HIDE_INTERNAL_API
840
849 static UResourceBundle* loadRule(const UResourceBundle* top, const UnicodeString& ruleid, UResourceBundle* oldbundle, UErrorCode&status);
850 #endif /* U_HIDE_INTERNAL_API */
851
852 private:
853 friend class ZoneMeta;
854
855
856 static TimeZone* createCustomTimeZone(const UnicodeString&); // Creates a time zone based on the string.
857
866 static const UChar* findID(const UnicodeString& id);
867
876 static const UChar* dereferOlsonLink(const UnicodeString& id);
877
884 static const UChar* getRegion(const UnicodeString& id);
885
886 public:
887 #ifndef U_HIDE_INTERNAL_API
888
896 static const UChar* getRegion(const UnicodeString& id, UErrorCode& status);
897 #endif /* U_HIDE_INTERNAL_API */
898
899 private:
910 static UBool parseCustomID(const UnicodeString& id, int32_t& sign, int32_t& hour,
911 int32_t& minute, int32_t& second);
912
923 static UnicodeString& getCustomID(const UnicodeString& id, UnicodeString& normalized,
924 UErrorCode& status);
925
935 static UnicodeString& formatCustomID(int32_t hour, int32_t min, int32_t sec,
936 UBool negative, UnicodeString& id);
937
938 UnicodeString fID; // this time zone's ID
939
940 friend class TZEnumeration;
941 };
942
943
944 // -------------------------------------
945
946 inline UnicodeString&
947 TimeZone::getID(UnicodeString& ID) const
948 {
949 ID = fID;
950 return ID;
951 }
952
953 // -------------------------------------
954
955 inline void
956 TimeZone::setID(const UnicodeString& ID)
957 {
958 fID = ID;
959 }
960 U_NAMESPACE_END
961
962 #endif /* #if !UCONFIG_NO_FORMATTING */
963
964 #endif //_TIMEZONE
965 //eof