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Commit | Line | Data |
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b75a7d8f A |
1 | /* |
2 | ******************************************************************************* | |
51004dcb | 3 | * Copyright (C) 1997-2013, International Business Machines Corporation and * |
b75a7d8f A |
4 | * others. All Rights Reserved. * |
5 | ******************************************************************************* | |
6 | * | |
7 | * File CALENDAR.CPP | |
8 | * | |
9 | * Modification History: | |
10 | * | |
11 | * Date Name Description | |
12 | * 02/03/97 clhuang Creation. | |
13 | * 04/22/97 aliu Cleaned up, fixed memory leak, made | |
14 | * setWeekCountData() more robust. | |
15 | * Moved platform code to TPlatformUtilities. | |
16 | * 05/01/97 aliu Made equals(), before(), after() arguments const. | |
17 | * 05/20/97 aliu Changed logic of when to compute fields and time | |
18 | * to fix bugs. | |
19 | * 08/12/97 aliu Added equivalentTo. Misc other fixes. | |
20 | * 07/28/98 stephen Sync up with JDK 1.2 | |
21 | * 09/02/98 stephen Sync with JDK 1.2 8/31 build (getActualMin/Max) | |
22 | * 03/17/99 stephen Changed adoptTimeZone() - now fAreFieldsSet is | |
23 | * set to FALSE to force update of time. | |
24 | ******************************************************************************* | |
25 | */ | |
26 | ||
51004dcb | 27 | #include "utypeinfo.h" // for 'typeid' to work |
729e4ab9 | 28 | |
b75a7d8f A |
29 | #include "unicode/utypes.h" |
30 | ||
31 | #if !UCONFIG_NO_FORMATTING | |
32 | ||
b75a7d8f | 33 | #include "unicode/gregocal.h" |
4388f060 A |
34 | #include "unicode/basictz.h" |
35 | #include "unicode/simpletz.h" | |
36 | #include "unicode/rbtz.h" | |
37 | #include "unicode/vtzone.h" | |
374ca955 | 38 | #include "gregoimp.h" |
b75a7d8f | 39 | #include "buddhcal.h" |
46f4442e | 40 | #include "taiwncal.h" |
b75a7d8f | 41 | #include "japancal.h" |
374ca955 A |
42 | #include "islamcal.h" |
43 | #include "hebrwcal.h" | |
46f4442e A |
44 | #include "persncal.h" |
45 | #include "indiancal.h" | |
46 | #include "chnsecal.h" | |
47 | #include "coptccal.h" | |
51004dcb | 48 | #include "dangical.h" |
46f4442e | 49 | #include "ethpccal.h" |
b75a7d8f A |
50 | #include "unicode/calendar.h" |
51 | #include "cpputils.h" | |
73c04bcf | 52 | #include "servloc.h" |
b75a7d8f A |
53 | #include "ucln_in.h" |
54 | #include "cstring.h" | |
374ca955 A |
55 | #include "locbased.h" |
56 | #include "uresimp.h" | |
729e4ab9 | 57 | #include "ustrenum.h" |
4388f060 A |
58 | #include "uassert.h" |
59 | #include "olsontz.h" | |
b75a7d8f | 60 | |
374ca955 | 61 | #if !UCONFIG_NO_SERVICE |
4388f060 | 62 | static icu::ICULocaleService* gService = NULL; |
374ca955 A |
63 | #endif |
64 | ||
65 | // INTERNAL - for cleanup | |
66 | ||
67 | U_CDECL_BEGIN | |
68 | static UBool calendar_cleanup(void) { | |
69 | #if !UCONFIG_NO_SERVICE | |
46f4442e A |
70 | if (gService) { |
71 | delete gService; | |
72 | gService = NULL; | |
73 | } | |
374ca955 | 74 | #endif |
46f4442e | 75 | return TRUE; |
374ca955 A |
76 | } |
77 | U_CDECL_END | |
b75a7d8f A |
78 | |
79 | // ------------------------------------------ | |
80 | // | |
81 | // Registration | |
82 | // | |
83 | //------------------------------------------- | |
84 | //#define U_DEBUG_CALSVC 1 | |
85 | // | |
86 | ||
374ca955 | 87 | #if defined( U_DEBUG_CALSVC ) || defined (U_DEBUG_CAL) |
374ca955 | 88 | |
46f4442e A |
89 | /** |
90 | * fldName was removed as a duplicate implementation. | |
91 | * use udbg_ services instead, | |
4388f060 A |
92 | * which depend on include files and library from ../tools/toolutil, the following circular link: |
93 | * CPPFLAGS+=-I$(top_srcdir)/tools/toolutil | |
94 | * LIBS+=$(LIBICUTOOLUTIL) | |
46f4442e | 95 | */ |
4388f060 | 96 | #include "udbgutil.h" |
46f4442e | 97 | #include <stdio.h> |
374ca955 A |
98 | |
99 | /** | |
46f4442e A |
100 | * convert a UCalendarDateFields into a string - for debugging |
101 | * @param f field enum | |
102 | * @return static string to the field name | |
103 | * @internal | |
104 | */ | |
374ca955 | 105 | |
46f4442e A |
106 | const char* fldName(UCalendarDateFields f) { |
107 | return udbg_enumName(UDBG_UCalendarDateFields, (int32_t)f); | |
108 | } | |
73c04bcf A |
109 | |
110 | #if UCAL_DEBUG_DUMP | |
111 | // from CalendarTest::calToStr - but doesn't modify contents. | |
112 | void ucal_dump(const Calendar &cal) { | |
113 | cal.dump(); | |
114 | } | |
115 | ||
116 | void Calendar::dump() const { | |
46f4442e A |
117 | int i; |
118 | fprintf(stderr, "@calendar=%s, timeset=%c, fieldset=%c, allfields=%c, virtualset=%c, t=%.2f", | |
119 | getType(), fIsTimeSet?'y':'n', fAreFieldsSet?'y':'n', fAreAllFieldsSet?'y':'n', | |
73c04bcf A |
120 | fAreFieldsVirtuallySet?'y':'n', |
121 | fTime); | |
46f4442e A |
122 | |
123 | // can add more things here: DST, zone, etc. | |
73c04bcf | 124 | fprintf(stderr, "\n"); |
46f4442e A |
125 | for(i = 0;i<UCAL_FIELD_COUNT;i++) { |
126 | int n; | |
127 | const char *f = fldName((UCalendarDateFields)i); | |
128 | fprintf(stderr, " %25s: %-11ld", f, fFields[i]); | |
129 | if(fStamp[i] == kUnset) { | |
130 | fprintf(stderr, " (unset) "); | |
131 | } else if(fStamp[i] == kInternallySet) { | |
132 | fprintf(stderr, " (internally set) "); | |
133 | //} else if(fStamp[i] == kInternalDefault) { | |
134 | // fprintf(stderr, " (internal default) "); | |
135 | } else { | |
136 | fprintf(stderr, " %%%d ", fStamp[i]); | |
137 | } | |
138 | fprintf(stderr, "\n"); | |
139 | ||
140 | } | |
73c04bcf A |
141 | } |
142 | ||
143 | U_CFUNC void ucal_dump(UCalendar* cal) { | |
144 | ucal_dump( *((Calendar*)cal) ); | |
145 | } | |
b75a7d8f A |
146 | #endif |
147 | ||
73c04bcf A |
148 | #endif |
149 | ||
4388f060 A |
150 | /* Max value for stamp allowable before recalculation */ |
151 | #define STAMP_MAX 10000 | |
152 | ||
729e4ab9 | 153 | static const char * const gCalTypes[] = { |
73c04bcf | 154 | "gregorian", |
729e4ab9 A |
155 | "japanese", |
156 | "buddhist", | |
157 | "roc", | |
158 | "persian", | |
159 | "islamic-civil", | |
160 | "islamic", | |
161 | "hebrew", | |
162 | "chinese", | |
163 | "indian", | |
164 | "coptic", | |
165 | "ethiopic", | |
166 | "ethiopic-amete-alem", | |
4388f060 | 167 | "iso8601", |
51004dcb | 168 | "dangi", |
729e4ab9 | 169 | NULL |
73c04bcf | 170 | }; |
374ca955 | 171 | |
729e4ab9 A |
172 | // Must be in the order of gCalTypes above |
173 | typedef enum ECalType { | |
174 | CALTYPE_UNKNOWN = -1, | |
175 | CALTYPE_GREGORIAN = 0, | |
176 | CALTYPE_JAPANESE, | |
177 | CALTYPE_BUDDHIST, | |
178 | CALTYPE_ROC, | |
179 | CALTYPE_PERSIAN, | |
180 | CALTYPE_ISLAMIC_CIVIL, | |
181 | CALTYPE_ISLAMIC, | |
182 | CALTYPE_HEBREW, | |
183 | CALTYPE_CHINESE, | |
184 | CALTYPE_INDIAN, | |
185 | CALTYPE_COPTIC, | |
186 | CALTYPE_ETHIOPIC, | |
4388f060 | 187 | CALTYPE_ETHIOPIC_AMETE_ALEM, |
51004dcb A |
188 | CALTYPE_ISO8601, |
189 | CALTYPE_DANGI | |
729e4ab9 A |
190 | } ECalType; |
191 | ||
374ca955 A |
192 | U_NAMESPACE_BEGIN |
193 | ||
729e4ab9 A |
194 | static ECalType getCalendarType(const char *s) { |
195 | for (int i = 0; gCalTypes[i] != NULL; i++) { | |
196 | if (uprv_stricmp(s, gCalTypes[i]) == 0) { | |
197 | return (ECalType)i; | |
198 | } | |
199 | } | |
200 | return CALTYPE_UNKNOWN; | |
201 | } | |
202 | ||
73c04bcf | 203 | static UBool isStandardSupportedKeyword(const char *keyword, UErrorCode& status) { |
374ca955 A |
204 | if(U_FAILURE(status)) { |
205 | return FALSE; | |
206 | } | |
729e4ab9 A |
207 | ECalType calType = getCalendarType(keyword); |
208 | return (calType != CALTYPE_UNKNOWN); | |
374ca955 A |
209 | } |
210 | ||
73c04bcf A |
211 | static void getCalendarKeyword(const UnicodeString &id, char *targetBuffer, int32_t targetBufferSize) { |
212 | UnicodeString calendarKeyword = UNICODE_STRING_SIMPLE("calendar="); | |
213 | int32_t calKeyLen = calendarKeyword.length(); | |
214 | int32_t keyLen = 0; | |
215 | ||
216 | int32_t keywordIdx = id.indexOf((UChar)0x003D); /* '=' */ | |
217 | if (id[0] == 0x40/*'@'*/ | |
218 | && id.compareBetween(1, keywordIdx+1, calendarKeyword, 0, calKeyLen) == 0) | |
219 | { | |
220 | keyLen = id.extract(keywordIdx+1, id.length(), targetBuffer, targetBufferSize, US_INV); | |
221 | } | |
222 | targetBuffer[keyLen] = 0; | |
223 | } | |
224 | ||
729e4ab9 A |
225 | static ECalType getCalendarTypeForLocale(const char *locid) { |
226 | UErrorCode status = U_ZERO_ERROR; | |
227 | ECalType calType = CALTYPE_UNKNOWN; | |
374ca955 | 228 | |
729e4ab9 A |
229 | //TODO: ULOC_FULL_NAME is out of date and too small.. |
230 | char canonicalName[256]; | |
231 | ||
232 | // canonicalize, so grandfathered variant will be transformed to keywords | |
233 | // e.g ja_JP_TRADITIONAL -> ja_JP@calendar=japanese | |
234 | int32_t canonicalLen = uloc_canonicalize(locid, canonicalName, sizeof(canonicalName) - 1, &status); | |
235 | if (U_FAILURE(status)) { | |
236 | return CALTYPE_GREGORIAN; | |
237 | } | |
238 | canonicalName[canonicalLen] = 0; // terminate | |
239 | ||
240 | char calTypeBuf[32]; | |
241 | int32_t calTypeBufLen; | |
242 | ||
243 | calTypeBufLen = uloc_getKeywordValue(canonicalName, "calendar", calTypeBuf, sizeof(calTypeBuf) - 1, &status); | |
244 | if (U_SUCCESS(status)) { | |
245 | calTypeBuf[calTypeBufLen] = 0; | |
246 | calType = getCalendarType(calTypeBuf); | |
247 | if (calType != CALTYPE_UNKNOWN) { | |
248 | return calType; | |
249 | } | |
46f4442e | 250 | } |
729e4ab9 A |
251 | status = U_ZERO_ERROR; |
252 | ||
253 | // when calendar keyword is not available or not supported, read supplementalData | |
254 | // to get the default calendar type for the locale's region | |
255 | char region[ULOC_COUNTRY_CAPACITY]; | |
256 | int32_t regionLen = 0; | |
257 | regionLen = uloc_getCountry(canonicalName, region, sizeof(region) - 1, &status); | |
258 | if (regionLen == 0) { | |
259 | char fullLoc[256]; | |
4388f060 | 260 | uloc_addLikelySubtags(locid, fullLoc, sizeof(fullLoc) - 1, &status); |
729e4ab9 A |
261 | regionLen = uloc_getCountry(fullLoc, region, sizeof(region) - 1, &status); |
262 | } | |
263 | if (U_FAILURE(status)) { | |
264 | return CALTYPE_GREGORIAN; | |
265 | } | |
266 | region[regionLen] = 0; | |
267 | ||
268 | // Read preferred calendar values from supplementalData calendarPreference | |
269 | UResourceBundle *rb = ures_openDirect(NULL, "supplementalData", &status); | |
270 | ures_getByKey(rb, "calendarPreferenceData", rb, &status); | |
271 | UResourceBundle *order = ures_getByKey(rb, region, NULL, &status); | |
272 | if (status == U_MISSING_RESOURCE_ERROR && rb != NULL) { | |
273 | status = U_ZERO_ERROR; | |
274 | order = ures_getByKey(rb, "001", NULL, &status); | |
275 | } | |
276 | ||
277 | calTypeBuf[0] = 0; | |
278 | if (U_SUCCESS(status) && order != NULL) { | |
279 | // the first calender type is the default for the region | |
280 | int32_t len = 0; | |
281 | const UChar *uCalType = ures_getStringByIndex(order, 0, &len, &status); | |
282 | if (len < (int32_t)sizeof(calTypeBuf)) { | |
283 | u_UCharsToChars(uCalType, calTypeBuf, len); | |
284 | *(calTypeBuf + len) = 0; // terminate; | |
285 | calType = getCalendarType(calTypeBuf); | |
286 | } | |
287 | } | |
288 | ||
289 | ures_close(order); | |
290 | ures_close(rb); | |
291 | ||
292 | if (calType == CALTYPE_UNKNOWN) { | |
293 | // final fallback | |
294 | calType = CALTYPE_GREGORIAN; | |
295 | } | |
296 | return calType; | |
374ca955 A |
297 | } |
298 | ||
729e4ab9 A |
299 | static Calendar *createStandardCalendar(ECalType calType, const Locale &loc, UErrorCode& status) { |
300 | Calendar *cal = NULL; | |
301 | ||
302 | switch (calType) { | |
303 | case CALTYPE_GREGORIAN: | |
304 | cal = new GregorianCalendar(loc, status); | |
305 | break; | |
306 | case CALTYPE_JAPANESE: | |
307 | cal = new JapaneseCalendar(loc, status); | |
308 | break; | |
309 | case CALTYPE_BUDDHIST: | |
310 | cal = new BuddhistCalendar(loc, status); | |
311 | break; | |
312 | case CALTYPE_ROC: | |
313 | cal = new TaiwanCalendar(loc, status); | |
314 | break; | |
315 | case CALTYPE_PERSIAN: | |
316 | cal = new PersianCalendar(loc, status); | |
317 | break; | |
318 | case CALTYPE_ISLAMIC_CIVIL: | |
319 | cal = new IslamicCalendar(loc, status, IslamicCalendar::CIVIL); | |
320 | break; | |
321 | case CALTYPE_ISLAMIC: | |
322 | cal = new IslamicCalendar(loc, status, IslamicCalendar::ASTRONOMICAL); | |
323 | break; | |
324 | case CALTYPE_HEBREW: | |
325 | cal = new HebrewCalendar(loc, status); | |
326 | break; | |
327 | case CALTYPE_CHINESE: | |
328 | cal = new ChineseCalendar(loc, status); | |
329 | break; | |
330 | case CALTYPE_INDIAN: | |
331 | cal = new IndianCalendar(loc, status); | |
332 | break; | |
333 | case CALTYPE_COPTIC: | |
334 | cal = new CopticCalendar(loc, status); | |
335 | break; | |
336 | case CALTYPE_ETHIOPIC: | |
337 | cal = new EthiopicCalendar(loc, status, EthiopicCalendar::AMETE_MIHRET_ERA); | |
338 | break; | |
339 | case CALTYPE_ETHIOPIC_AMETE_ALEM: | |
340 | cal = new EthiopicCalendar(loc, status, EthiopicCalendar::AMETE_ALEM_ERA); | |
341 | break; | |
4388f060 A |
342 | case CALTYPE_ISO8601: |
343 | cal = new GregorianCalendar(loc, status); | |
344 | cal->setFirstDayOfWeek(UCAL_MONDAY); | |
345 | cal->setMinimalDaysInFirstWeek(4); | |
346 | break; | |
51004dcb A |
347 | case CALTYPE_DANGI: |
348 | cal = new DangiCalendar(loc, status); | |
349 | break; | |
729e4ab9 A |
350 | default: |
351 | status = U_UNSUPPORTED_ERROR; | |
352 | } | |
353 | return cal; | |
354 | } | |
355 | ||
356 | ||
374ca955 | 357 | #if !UCONFIG_NO_SERVICE |
b75a7d8f A |
358 | |
359 | // ------------------------------------- | |
360 | ||
361 | /** | |
46f4442e A |
362 | * a Calendar Factory which creates the "basic" calendar types, that is, those |
363 | * shipped with ICU. | |
364 | */ | |
b75a7d8f A |
365 | class BasicCalendarFactory : public LocaleKeyFactory { |
366 | public: | |
46f4442e A |
367 | /** |
368 | * @param calendarType static const string (caller owns storage - will be aliased) to calendar type | |
369 | */ | |
370 | BasicCalendarFactory() | |
371 | : LocaleKeyFactory(LocaleKeyFactory::INVISIBLE) { } | |
372 | ||
4388f060 | 373 | virtual ~BasicCalendarFactory(); |
b75a7d8f A |
374 | |
375 | protected: | |
46f4442e A |
376 | //virtual UBool isSupportedID( const UnicodeString& id, UErrorCode& status) const { |
377 | // if(U_FAILURE(status)) { | |
378 | // return FALSE; | |
379 | // } | |
380 | // char keyword[ULOC_FULLNAME_CAPACITY]; | |
381 | // getCalendarKeyword(id, keyword, (int32_t)sizeof(keyword)); | |
382 | // return isStandardSupportedKeyword(keyword, status); | |
383 | //} | |
384 | ||
385 | virtual void updateVisibleIDs(Hashtable& result, UErrorCode& status) const | |
386 | { | |
387 | if (U_SUCCESS(status)) { | |
729e4ab9 | 388 | for(int32_t i=0;gCalTypes[i] != NULL;i++) { |
46f4442e A |
389 | UnicodeString id((UChar)0x40); /* '@' a variant character */ |
390 | id.append(UNICODE_STRING_SIMPLE("calendar=")); | |
729e4ab9 | 391 | id.append(UnicodeString(gCalTypes[i], -1, US_INV)); |
46f4442e A |
392 | result.put(id, (void*)this, status); |
393 | } | |
394 | } | |
b75a7d8f | 395 | } |
b75a7d8f | 396 | |
46f4442e | 397 | virtual UObject* create(const ICUServiceKey& key, const ICUService* /*service*/, UErrorCode& status) const { |
374ca955 | 398 | #ifdef U_DEBUG_CALSVC |
729e4ab9 | 399 | if(dynamic_cast<const LocaleKey*>(&key) == NULL) { |
46f4442e A |
400 | fprintf(stderr, "::create - not a LocaleKey!\n"); |
401 | } | |
374ca955 | 402 | #endif |
46f4442e A |
403 | const LocaleKey& lkey = (LocaleKey&)key; |
404 | Locale curLoc; // current locale | |
405 | Locale canLoc; // Canonical locale | |
b75a7d8f | 406 | |
46f4442e A |
407 | lkey.currentLocale(curLoc); |
408 | lkey.canonicalLocale(canLoc); | |
b75a7d8f | 409 | |
46f4442e A |
410 | char keyword[ULOC_FULLNAME_CAPACITY]; |
411 | UnicodeString str; | |
b75a7d8f | 412 | |
46f4442e A |
413 | key.currentID(str); |
414 | getCalendarKeyword(str, keyword, (int32_t) sizeof(keyword)); | |
374ca955 | 415 | |
b75a7d8f | 416 | #ifdef U_DEBUG_CALSVC |
46f4442e | 417 | fprintf(stderr, "BasicCalendarFactory::create() - cur %s, can %s\n", (const char*)curLoc.getName(), (const char*)canLoc.getName()); |
b75a7d8f A |
418 | #endif |
419 | ||
46f4442e | 420 | if(!isStandardSupportedKeyword(keyword,status)) { // Do we handle this type? |
b75a7d8f | 421 | #ifdef U_DEBUG_CALSVC |
46f4442e A |
422 | |
423 | fprintf(stderr, "BasicCalendarFactory - not handling %s.[%s]\n", (const char*) curLoc.getName(), tmp ); | |
b75a7d8f | 424 | #endif |
46f4442e A |
425 | return NULL; |
426 | } | |
b75a7d8f | 427 | |
729e4ab9 | 428 | return createStandardCalendar(getCalendarType(keyword), canLoc, status); |
46f4442e | 429 | } |
b75a7d8f A |
430 | }; |
431 | ||
4388f060 | 432 | BasicCalendarFactory::~BasicCalendarFactory() {} |
b75a7d8f A |
433 | |
434 | /** | |
46f4442e A |
435 | * A factory which looks up the DefaultCalendar resource to determine which class of calendar to use |
436 | */ | |
b75a7d8f A |
437 | |
438 | class DefaultCalendarFactory : public ICUResourceBundleFactory { | |
46f4442e | 439 | public: |
4388f060 A |
440 | DefaultCalendarFactory() : ICUResourceBundleFactory() { } |
441 | virtual ~DefaultCalendarFactory(); | |
46f4442e A |
442 | protected: |
443 | virtual UObject* create(const ICUServiceKey& key, const ICUService* /*service*/, UErrorCode& status) const { | |
444 | ||
445 | LocaleKey &lkey = (LocaleKey&)key; | |
446 | Locale loc; | |
447 | lkey.currentLocale(loc); | |
448 | ||
729e4ab9 A |
449 | UnicodeString *ret = new UnicodeString(); |
450 | if (ret == NULL) { | |
451 | status = U_MEMORY_ALLOCATION_ERROR; | |
46f4442e | 452 | } else { |
729e4ab9 A |
453 | ret->append((UChar)0x40); // '@' is a variant character |
454 | ret->append(UNICODE_STRING("calendar=", 9)); | |
4388f060 | 455 | ret->append(UnicodeString(gCalTypes[getCalendarTypeForLocale(loc.getName())], -1, US_INV)); |
46f4442e | 456 | } |
729e4ab9 | 457 | return ret; |
374ca955 | 458 | } |
b75a7d8f A |
459 | }; |
460 | ||
4388f060 A |
461 | DefaultCalendarFactory::~DefaultCalendarFactory() {} |
462 | ||
b75a7d8f A |
463 | // ------------------------------------- |
464 | class CalendarService : public ICULocaleService { | |
465 | public: | |
46f4442e A |
466 | CalendarService() |
467 | : ICULocaleService(UNICODE_STRING_SIMPLE("Calendar")) | |
468 | { | |
469 | UErrorCode status = U_ZERO_ERROR; | |
470 | registerFactory(new DefaultCalendarFactory(), status); | |
471 | } | |
b75a7d8f | 472 | |
4388f060 A |
473 | virtual ~CalendarService(); |
474 | ||
46f4442e | 475 | virtual UObject* cloneInstance(UObject* instance) const { |
729e4ab9 A |
476 | UnicodeString *s = dynamic_cast<UnicodeString *>(instance); |
477 | if(s != NULL) { | |
478 | return s->clone(); | |
46f4442e | 479 | } else { |
b75a7d8f | 480 | #ifdef U_DEBUG_CALSVC_F |
46f4442e A |
481 | UErrorCode status2 = U_ZERO_ERROR; |
482 | fprintf(stderr, "Cloning a %s calendar with tz=%ld\n", ((Calendar*)instance)->getType(), ((Calendar*)instance)->get(UCAL_ZONE_OFFSET, status2)); | |
b75a7d8f | 483 | #endif |
46f4442e A |
484 | return ((Calendar*)instance)->clone(); |
485 | } | |
b75a7d8f | 486 | } |
b75a7d8f | 487 | |
46f4442e A |
488 | virtual UObject* handleDefault(const ICUServiceKey& key, UnicodeString* /*actualID*/, UErrorCode& status) const { |
489 | LocaleKey& lkey = (LocaleKey&)key; | |
490 | //int32_t kind = lkey.kind(); | |
b75a7d8f | 491 | |
46f4442e A |
492 | Locale loc; |
493 | lkey.canonicalLocale(loc); | |
b75a7d8f A |
494 | |
495 | #ifdef U_DEBUG_CALSVC | |
496 | Locale loc2; | |
497 | lkey.currentLocale(loc2); | |
46f4442e | 498 | fprintf(stderr, "CalSvc:handleDefault for currentLoc %s, canloc %s\n", (const char*)loc.getName(), (const char*)loc2.getName()); |
b75a7d8f | 499 | #endif |
46f4442e | 500 | Calendar *nc = new GregorianCalendar(loc, status); |
b75a7d8f A |
501 | |
502 | #ifdef U_DEBUG_CALSVC | |
503 | UErrorCode status2 = U_ZERO_ERROR; | |
504 | fprintf(stderr, "New default calendar has tz=%d\n", ((Calendar*)nc)->get(UCAL_ZONE_OFFSET, status2)); | |
505 | #endif | |
506 | return nc; | |
46f4442e | 507 | } |
b75a7d8f | 508 | |
46f4442e A |
509 | virtual UBool isDefault() const { |
510 | return countFactories() == 1; | |
511 | } | |
b75a7d8f A |
512 | }; |
513 | ||
4388f060 A |
514 | CalendarService::~CalendarService() {} |
515 | ||
b75a7d8f A |
516 | // ------------------------------------- |
517 | ||
374ca955 A |
518 | static inline UBool |
519 | isCalendarServiceUsed() { | |
46f4442e A |
520 | UBool retVal; |
521 | UMTX_CHECK(NULL, gService != NULL, retVal); | |
522 | return retVal; | |
374ca955 A |
523 | } |
524 | ||
525 | // ------------------------------------- | |
526 | ||
b75a7d8f | 527 | static ICULocaleService* |
374ca955 | 528 | getCalendarService(UErrorCode &status) |
b75a7d8f | 529 | { |
46f4442e A |
530 | UBool needInit; |
531 | UMTX_CHECK(NULL, (UBool)(gService == NULL), needInit); | |
532 | if (needInit) { | |
b75a7d8f | 533 | #ifdef U_DEBUG_CALSVC |
46f4442e | 534 | fprintf(stderr, "Spinning up Calendar Service\n"); |
b75a7d8f | 535 | #endif |
46f4442e A |
536 | ICULocaleService * newservice = new CalendarService(); |
537 | if (newservice == NULL) { | |
538 | status = U_MEMORY_ALLOCATION_ERROR; | |
539 | return newservice; | |
540 | } | |
b75a7d8f | 541 | #ifdef U_DEBUG_CALSVC |
46f4442e | 542 | fprintf(stderr, "Registering classes..\n"); |
b75a7d8f A |
543 | #endif |
544 | ||
46f4442e A |
545 | // Register all basic instances. |
546 | newservice->registerFactory(new BasicCalendarFactory(),status); | |
b75a7d8f A |
547 | |
548 | #ifdef U_DEBUG_CALSVC | |
46f4442e | 549 | fprintf(stderr, "Done..\n"); |
b75a7d8f A |
550 | #endif |
551 | ||
46f4442e | 552 | if(U_FAILURE(status)) { |
b75a7d8f | 553 | #ifdef U_DEBUG_CALSVC |
46f4442e | 554 | fprintf(stderr, "err (%s) registering classes, deleting service.....\n", u_errorName(status)); |
b75a7d8f | 555 | #endif |
46f4442e A |
556 | delete newservice; |
557 | newservice = NULL; | |
558 | } | |
559 | ||
560 | if (newservice) { | |
561 | umtx_lock(NULL); | |
562 | if (gService == NULL) { | |
563 | gService = newservice; | |
564 | newservice = NULL; | |
565 | } | |
566 | umtx_unlock(NULL); | |
567 | } | |
568 | if (newservice) { | |
569 | delete newservice; | |
570 | } else { | |
571 | // we won the contention - we can register the cleanup. | |
572 | ucln_i18n_registerCleanup(UCLN_I18N_CALENDAR, calendar_cleanup); | |
573 | } | |
b75a7d8f | 574 | } |
46f4442e | 575 | return gService; |
b75a7d8f A |
576 | } |
577 | ||
374ca955 A |
578 | URegistryKey Calendar::registerFactory(ICUServiceFactory* toAdopt, UErrorCode& status) |
579 | { | |
46f4442e | 580 | return getCalendarService(status)->registerFactory(toAdopt, status); |
374ca955 A |
581 | } |
582 | ||
583 | UBool Calendar::unregister(URegistryKey key, UErrorCode& status) { | |
46f4442e | 584 | return getCalendarService(status)->unregister(key, status); |
374ca955 A |
585 | } |
586 | #endif /* UCONFIG_NO_SERVICE */ | |
587 | ||
b75a7d8f A |
588 | // ------------------------------------- |
589 | ||
374ca955 A |
590 | static const int32_t kCalendarLimits[UCAL_FIELD_COUNT][4] = { |
591 | // Minimum Greatest min Least max Greatest max | |
592 | {/*N/A*/-1, /*N/A*/-1, /*N/A*/-1, /*N/A*/-1}, // ERA | |
593 | {/*N/A*/-1, /*N/A*/-1, /*N/A*/-1, /*N/A*/-1}, // YEAR | |
594 | {/*N/A*/-1, /*N/A*/-1, /*N/A*/-1, /*N/A*/-1}, // MONTH | |
595 | {/*N/A*/-1, /*N/A*/-1, /*N/A*/-1, /*N/A*/-1}, // WEEK_OF_YEAR | |
596 | {/*N/A*/-1, /*N/A*/-1, /*N/A*/-1, /*N/A*/-1}, // WEEK_OF_MONTH | |
597 | {/*N/A*/-1, /*N/A*/-1, /*N/A*/-1, /*N/A*/-1}, // DAY_OF_MONTH | |
598 | {/*N/A*/-1, /*N/A*/-1, /*N/A*/-1, /*N/A*/-1}, // DAY_OF_YEAR | |
599 | { 1, 1, 7, 7 }, // DAY_OF_WEEK | |
600 | {/*N/A*/-1, /*N/A*/-1, /*N/A*/-1, /*N/A*/-1}, // DAY_OF_WEEK_IN_MONTH | |
601 | { 0, 0, 1, 1 }, // AM_PM | |
602 | { 0, 0, 11, 11 }, // HOUR | |
603 | { 0, 0, 23, 23 }, // HOUR_OF_DAY | |
604 | { 0, 0, 59, 59 }, // MINUTE | |
605 | { 0, 0, 59, 59 }, // SECOND | |
606 | { 0, 0, 999, 999 }, // MILLISECOND | |
607 | {-12*kOneHour, -12*kOneHour, 12*kOneHour, 15*kOneHour }, // ZONE_OFFSET | |
608 | { 0, 0, 1*kOneHour, 1*kOneHour }, // DST_OFFSET | |
609 | {/*N/A*/-1, /*N/A*/-1, /*N/A*/-1, /*N/A*/-1}, // YEAR_WOY | |
610 | { 1, 1, 7, 7 }, // DOW_LOCAL | |
611 | {/*N/A*/-1, /*N/A*/-1, /*N/A*/-1, /*N/A*/-1}, // EXTENDED_YEAR | |
612 | { -0x7F000000, -0x7F000000, 0x7F000000, 0x7F000000 }, // JULIAN_DAY | |
46f4442e A |
613 | { 0, 0, 24*kOneHour-1, 24*kOneHour-1 }, // MILLISECONDS_IN_DAY |
614 | { 0, 0, 1, 1 }, // IS_LEAP_MONTH | |
374ca955 | 615 | }; |
b75a7d8f A |
616 | |
617 | // Resource bundle tags read by this class | |
4388f060 | 618 | static const char gMonthNames[] = "monthNames"; |
b75a7d8f A |
619 | |
620 | // Data flow in Calendar | |
621 | // --------------------- | |
622 | ||
623 | // The current time is represented in two ways by Calendar: as UTC | |
624 | // milliseconds from the epoch start (1 January 1970 0:00 UTC), and as local | |
625 | // fields such as MONTH, HOUR, AM_PM, etc. It is possible to compute the | |
626 | // millis from the fields, and vice versa. The data needed to do this | |
627 | // conversion is encapsulated by a TimeZone object owned by the Calendar. | |
628 | // The data provided by the TimeZone object may also be overridden if the | |
629 | // user sets the ZONE_OFFSET and/or DST_OFFSET fields directly. The class | |
630 | // keeps track of what information was most recently set by the caller, and | |
631 | // uses that to compute any other information as needed. | |
632 | ||
633 | // If the user sets the fields using set(), the data flow is as follows. | |
634 | // This is implemented by the Calendar subclass's computeTime() method. | |
635 | // During this process, certain fields may be ignored. The disambiguation | |
636 | // algorithm for resolving which fields to pay attention to is described | |
637 | // above. | |
638 | ||
639 | // local fields (YEAR, MONTH, DATE, HOUR, MINUTE, etc.) | |
640 | // | | |
641 | // | Using Calendar-specific algorithm | |
642 | // V | |
643 | // local standard millis | |
644 | // | | |
645 | // | Using TimeZone or user-set ZONE_OFFSET / DST_OFFSET | |
646 | // V | |
647 | // UTC millis (in time data member) | |
648 | ||
649 | // If the user sets the UTC millis using setTime(), the data flow is as | |
650 | // follows. This is implemented by the Calendar subclass's computeFields() | |
651 | // method. | |
652 | ||
653 | // UTC millis (in time data member) | |
654 | // | | |
655 | // | Using TimeZone getOffset() | |
656 | // V | |
657 | // local standard millis | |
658 | // | | |
659 | // | Using Calendar-specific algorithm | |
660 | // V | |
661 | // local fields (YEAR, MONTH, DATE, HOUR, MINUTE, etc.) | |
662 | ||
663 | // In general, a round trip from fields, through local and UTC millis, and | |
664 | // back out to fields is made when necessary. This is implemented by the | |
665 | // complete() method. Resolving a partial set of fields into a UTC millis | |
666 | // value allows all remaining fields to be generated from that value. If | |
667 | // the Calendar is lenient, the fields are also renormalized to standard | |
668 | // ranges when they are regenerated. | |
669 | ||
670 | // ------------------------------------- | |
671 | ||
672 | Calendar::Calendar(UErrorCode& success) | |
673 | : UObject(), | |
46f4442e A |
674 | fIsTimeSet(FALSE), |
675 | fAreFieldsSet(FALSE), | |
676 | fAreAllFieldsSet(FALSE), | |
677 | fAreFieldsVirtuallySet(FALSE), | |
678 | fNextStamp((int32_t)kMinimumUserStamp), | |
679 | fTime(0), | |
680 | fLenient(TRUE), | |
4388f060 A |
681 | fZone(0), |
682 | fRepeatedWallTime(UCAL_WALLTIME_LAST), | |
683 | fSkippedWallTime(UCAL_WALLTIME_LAST) | |
b75a7d8f A |
684 | { |
685 | clear(); | |
686 | fZone = TimeZone::createDefault(); | |
46f4442e A |
687 | if (fZone == NULL) { |
688 | success = U_MEMORY_ALLOCATION_ERROR; | |
689 | } | |
729e4ab9 | 690 | setWeekData(Locale::getDefault(), NULL, success); |
b75a7d8f A |
691 | } |
692 | ||
693 | // ------------------------------------- | |
694 | ||
695 | Calendar::Calendar(TimeZone* zone, const Locale& aLocale, UErrorCode& success) | |
696 | : UObject(), | |
46f4442e A |
697 | fIsTimeSet(FALSE), |
698 | fAreFieldsSet(FALSE), | |
699 | fAreAllFieldsSet(FALSE), | |
700 | fAreFieldsVirtuallySet(FALSE), | |
701 | fNextStamp((int32_t)kMinimumUserStamp), | |
702 | fTime(0), | |
703 | fLenient(TRUE), | |
4388f060 A |
704 | fZone(0), |
705 | fRepeatedWallTime(UCAL_WALLTIME_LAST), | |
706 | fSkippedWallTime(UCAL_WALLTIME_LAST) | |
b75a7d8f A |
707 | { |
708 | if(zone == 0) { | |
374ca955 | 709 | #if defined (U_DEBUG_CAL) |
46f4442e A |
710 | fprintf(stderr, "%s:%d: ILLEGAL ARG because timezone cannot be 0\n", |
711 | __FILE__, __LINE__); | |
374ca955 | 712 | #endif |
46f4442e A |
713 | success = U_ILLEGAL_ARGUMENT_ERROR; |
714 | return; | |
b75a7d8f A |
715 | } |
716 | ||
717 | clear(); | |
718 | fZone = zone; | |
46f4442e | 719 | |
729e4ab9 | 720 | setWeekData(aLocale, NULL, success); |
b75a7d8f A |
721 | } |
722 | ||
723 | // ------------------------------------- | |
724 | ||
725 | Calendar::Calendar(const TimeZone& zone, const Locale& aLocale, UErrorCode& success) | |
726 | : UObject(), | |
46f4442e A |
727 | fIsTimeSet(FALSE), |
728 | fAreFieldsSet(FALSE), | |
729 | fAreAllFieldsSet(FALSE), | |
730 | fAreFieldsVirtuallySet(FALSE), | |
731 | fNextStamp((int32_t)kMinimumUserStamp), | |
732 | fTime(0), | |
733 | fLenient(TRUE), | |
4388f060 A |
734 | fZone(0), |
735 | fRepeatedWallTime(UCAL_WALLTIME_LAST), | |
736 | fSkippedWallTime(UCAL_WALLTIME_LAST) | |
b75a7d8f A |
737 | { |
738 | clear(); | |
739 | fZone = zone.clone(); | |
46f4442e A |
740 | if (fZone == NULL) { |
741 | success = U_MEMORY_ALLOCATION_ERROR; | |
742 | } | |
729e4ab9 | 743 | setWeekData(aLocale, NULL, success); |
b75a7d8f A |
744 | } |
745 | ||
746 | // ------------------------------------- | |
747 | ||
748 | Calendar::~Calendar() | |
749 | { | |
750 | delete fZone; | |
751 | } | |
752 | ||
753 | // ------------------------------------- | |
754 | ||
755 | Calendar::Calendar(const Calendar &source) | |
756 | : UObject(source) | |
757 | { | |
758 | fZone = 0; | |
759 | *this = source; | |
760 | } | |
761 | ||
762 | // ------------------------------------- | |
763 | ||
764 | Calendar & | |
765 | Calendar::operator=(const Calendar &right) | |
766 | { | |
374ca955 | 767 | if (this != &right) { |
b75a7d8f A |
768 | uprv_arrayCopy(right.fFields, fFields, UCAL_FIELD_COUNT); |
769 | uprv_arrayCopy(right.fIsSet, fIsSet, UCAL_FIELD_COUNT); | |
770 | uprv_arrayCopy(right.fStamp, fStamp, UCAL_FIELD_COUNT); | |
374ca955 A |
771 | fTime = right.fTime; |
772 | fIsTimeSet = right.fIsTimeSet; | |
b75a7d8f | 773 | fAreAllFieldsSet = right.fAreAllFieldsSet; |
374ca955 A |
774 | fAreFieldsSet = right.fAreFieldsSet; |
775 | fAreFieldsVirtuallySet = right.fAreFieldsVirtuallySet; | |
b75a7d8f | 776 | fLenient = right.fLenient; |
4388f060 A |
777 | fRepeatedWallTime = right.fRepeatedWallTime; |
778 | fSkippedWallTime = right.fSkippedWallTime; | |
46f4442e A |
779 | if (fZone != NULL) { |
780 | delete fZone; | |
781 | } | |
782 | if (right.fZone != NULL) { | |
783 | fZone = right.fZone->clone(); | |
784 | } | |
374ca955 A |
785 | fFirstDayOfWeek = right.fFirstDayOfWeek; |
786 | fMinimalDaysInFirstWeek = right.fMinimalDaysInFirstWeek; | |
729e4ab9 A |
787 | fWeekendOnset = right.fWeekendOnset; |
788 | fWeekendOnsetMillis = right.fWeekendOnsetMillis; | |
789 | fWeekendCease = right.fWeekendCease; | |
790 | fWeekendCeaseMillis = right.fWeekendCeaseMillis; | |
374ca955 | 791 | fNextStamp = right.fNextStamp; |
4388f060 A |
792 | uprv_strcpy(validLocale, right.validLocale); |
793 | uprv_strcpy(actualLocale, right.actualLocale); | |
b75a7d8f | 794 | } |
46f4442e | 795 | |
b75a7d8f A |
796 | return *this; |
797 | } | |
798 | ||
799 | // ------------------------------------- | |
800 | ||
374ca955 | 801 | Calendar* U_EXPORT2 |
b75a7d8f A |
802 | Calendar::createInstance(UErrorCode& success) |
803 | { | |
46f4442e | 804 | return createInstance(TimeZone::createDefault(), Locale::getDefault(), success); |
b75a7d8f A |
805 | } |
806 | ||
807 | // ------------------------------------- | |
808 | ||
374ca955 | 809 | Calendar* U_EXPORT2 |
b75a7d8f A |
810 | Calendar::createInstance(const TimeZone& zone, UErrorCode& success) |
811 | { | |
46f4442e | 812 | return createInstance(zone, Locale::getDefault(), success); |
b75a7d8f A |
813 | } |
814 | ||
815 | // ------------------------------------- | |
816 | ||
374ca955 | 817 | Calendar* U_EXPORT2 |
b75a7d8f A |
818 | Calendar::createInstance(const Locale& aLocale, UErrorCode& success) |
819 | { | |
46f4442e | 820 | return createInstance(TimeZone::createDefault(), aLocale, success); |
b75a7d8f A |
821 | } |
822 | ||
823 | // ------------------------------------- Adopting | |
824 | ||
825 | // Note: this is the bottleneck that actually calls the service routines. | |
826 | ||
374ca955 | 827 | Calendar* U_EXPORT2 |
b75a7d8f A |
828 | Calendar::createInstance(TimeZone* zone, const Locale& aLocale, UErrorCode& success) |
829 | { | |
729e4ab9 A |
830 | if (U_FAILURE(success)) { |
831 | return NULL; | |
832 | } | |
833 | ||
374ca955 | 834 | Locale actualLoc; |
729e4ab9 A |
835 | UObject* u = NULL; |
836 | ||
374ca955 A |
837 | #if !UCONFIG_NO_SERVICE |
838 | if (isCalendarServiceUsed()) { | |
839 | u = getCalendarService(success)->get(aLocale, LocaleKey::KIND_ANY, &actualLoc, success); | |
840 | } | |
841 | else | |
842 | #endif | |
843 | { | |
729e4ab9 | 844 | u = createStandardCalendar(getCalendarTypeForLocale(aLocale.getName()), aLocale, success); |
374ca955 A |
845 | } |
846 | Calendar* c = NULL; | |
b75a7d8f | 847 | |
46f4442e A |
848 | if(U_FAILURE(success) || !u) { |
849 | delete zone; | |
850 | if(U_SUCCESS(success)) { // Propagate some kind of err | |
851 | success = U_INTERNAL_PROGRAM_ERROR; | |
852 | } | |
853 | return NULL; | |
b75a7d8f | 854 | } |
374ca955 A |
855 | |
856 | #if !UCONFIG_NO_SERVICE | |
729e4ab9 A |
857 | const UnicodeString* str = dynamic_cast<const UnicodeString*>(u); |
858 | if(str != NULL) { | |
46f4442e | 859 | // It's a unicode string telling us what type of calendar to load ("gregorian", etc) |
46f4442e A |
860 | // Create a Locale over this string |
861 | Locale l(""); | |
729e4ab9 | 862 | LocaleUtility::initLocaleFromName(*str, l); |
b75a7d8f | 863 | |
374ca955 | 864 | #ifdef U_DEBUG_CALSVC |
46f4442e | 865 | fprintf(stderr, "Calendar::createInstance(%s), looking up [%s]\n", aLocale.getName(), l.getName()); |
374ca955 A |
866 | #endif |
867 | ||
46f4442e A |
868 | Locale actualLoc2; |
869 | delete u; | |
870 | u = NULL; | |
871 | ||
872 | // Don't overwrite actualLoc, since the actual loc from this call | |
873 | // may be something like "@calendar=gregorian" -- TODO investigate | |
874 | // further... | |
875 | c = (Calendar*)getCalendarService(success)->get(l, LocaleKey::KIND_ANY, &actualLoc2, success); | |
876 | ||
877 | if(U_FAILURE(success) || !c) { | |
878 | delete zone; | |
879 | if(U_SUCCESS(success)) { | |
880 | success = U_INTERNAL_PROGRAM_ERROR; // Propagate some err | |
881 | } | |
882 | return NULL; | |
883 | } | |
884 | ||
729e4ab9 A |
885 | str = dynamic_cast<const UnicodeString*>(c); |
886 | if(str != NULL) { | |
46f4442e A |
887 | // recursed! Second lookup returned a UnicodeString. |
888 | // Perhaps DefaultCalendar{} was set to another locale. | |
374ca955 | 889 | #ifdef U_DEBUG_CALSVC |
46f4442e | 890 | char tmp[200]; |
46f4442e | 891 | // Extract a char* out of it.. |
729e4ab9 | 892 | int32_t len = str->length(); |
46f4442e A |
893 | int32_t actLen = sizeof(tmp)-1; |
894 | if(len > actLen) { | |
895 | len = actLen; | |
896 | } | |
729e4ab9 | 897 | str->extract(0,len,tmp); |
46f4442e A |
898 | tmp[len]=0; |
899 | ||
900 | fprintf(stderr, "err - recursed, 2nd lookup was unistring %s\n", tmp); | |
374ca955 | 901 | #endif |
46f4442e A |
902 | success = U_MISSING_RESOURCE_ERROR; // requested a calendar type which could NOT be found. |
903 | delete c; | |
904 | delete zone; | |
905 | return NULL; | |
906 | } | |
b75a7d8f | 907 | #ifdef U_DEBUG_CALSVC |
46f4442e | 908 | fprintf(stderr, "%p: setting week count data to locale %s, actual locale %s\n", c, (const char*)aLocale.getName(), (const char *)actualLoc.getName()); |
b75a7d8f | 909 | #endif |
729e4ab9 | 910 | c->setWeekData(aLocale, c->getType(), success); // set the correct locale (this was an indirected calendar) |
4388f060 A |
911 | |
912 | char keyword[ULOC_FULLNAME_CAPACITY]; | |
913 | UErrorCode tmpStatus = U_ZERO_ERROR; | |
914 | l.getKeywordValue("calendar", keyword, ULOC_FULLNAME_CAPACITY, tmpStatus); | |
915 | if (U_SUCCESS(tmpStatus) && uprv_strcmp(keyword, "iso8601") == 0) { | |
916 | c->setFirstDayOfWeek(UCAL_MONDAY); | |
917 | c->setMinimalDaysInFirstWeek(4); | |
918 | } | |
46f4442e A |
919 | } |
920 | else | |
374ca955 | 921 | #endif /* UCONFIG_NO_SERVICE */ |
46f4442e A |
922 | { |
923 | // a calendar was returned - we assume the factory did the right thing. | |
924 | c = (Calendar*)u; | |
925 | } | |
926 | ||
927 | // Now, reset calendar to default state: | |
928 | c->adoptTimeZone(zone); // Set the correct time zone | |
929 | c->setTimeInMillis(getNow(), success); // let the new calendar have the current time. | |
b75a7d8f | 930 | |
46f4442e | 931 | return c; |
b75a7d8f A |
932 | } |
933 | ||
934 | // ------------------------------------- | |
935 | ||
374ca955 | 936 | Calendar* U_EXPORT2 |
b75a7d8f A |
937 | Calendar::createInstance(const TimeZone& zone, const Locale& aLocale, UErrorCode& success) |
938 | { | |
46f4442e A |
939 | Calendar* c = createInstance(aLocale, success); |
940 | if(U_SUCCESS(success) && c) { | |
941 | c->setTimeZone(zone); | |
942 | } | |
943 | return c; | |
b75a7d8f A |
944 | } |
945 | ||
946 | // ------------------------------------- | |
947 | ||
948 | UBool | |
949 | Calendar::operator==(const Calendar& that) const | |
950 | { | |
951 | UErrorCode status = U_ZERO_ERROR; | |
952 | return isEquivalentTo(that) && | |
953 | getTimeInMillis(status) == that.getTimeInMillis(status) && | |
954 | U_SUCCESS(status); | |
955 | } | |
956 | ||
957 | UBool | |
958 | Calendar::isEquivalentTo(const Calendar& other) const | |
959 | { | |
729e4ab9 | 960 | return typeid(*this) == typeid(other) && |
b75a7d8f | 961 | fLenient == other.fLenient && |
4388f060 A |
962 | fRepeatedWallTime == other.fRepeatedWallTime && |
963 | fSkippedWallTime == other.fSkippedWallTime && | |
b75a7d8f A |
964 | fFirstDayOfWeek == other.fFirstDayOfWeek && |
965 | fMinimalDaysInFirstWeek == other.fMinimalDaysInFirstWeek && | |
729e4ab9 A |
966 | fWeekendOnset == other.fWeekendOnset && |
967 | fWeekendOnsetMillis == other.fWeekendOnsetMillis && | |
968 | fWeekendCease == other.fWeekendCease && | |
969 | fWeekendCeaseMillis == other.fWeekendCeaseMillis && | |
b75a7d8f A |
970 | *fZone == *other.fZone; |
971 | } | |
972 | ||
973 | // ------------------------------------- | |
974 | ||
975 | UBool | |
976 | Calendar::equals(const Calendar& when, UErrorCode& status) const | |
977 | { | |
978 | return (this == &when || | |
46f4442e | 979 | getTime(status) == when.getTime(status)); |
b75a7d8f A |
980 | } |
981 | ||
982 | // ------------------------------------- | |
983 | ||
984 | UBool | |
985 | Calendar::before(const Calendar& when, UErrorCode& status) const | |
986 | { | |
987 | return (this != &when && | |
46f4442e | 988 | getTimeInMillis(status) < when.getTimeInMillis(status)); |
b75a7d8f A |
989 | } |
990 | ||
991 | // ------------------------------------- | |
992 | ||
993 | UBool | |
994 | Calendar::after(const Calendar& when, UErrorCode& status) const | |
995 | { | |
996 | return (this != &when && | |
46f4442e | 997 | getTimeInMillis(status) > when.getTimeInMillis(status)); |
b75a7d8f A |
998 | } |
999 | ||
1000 | // ------------------------------------- | |
1001 | ||
1002 | ||
374ca955 | 1003 | const Locale* U_EXPORT2 |
b75a7d8f A |
1004 | Calendar::getAvailableLocales(int32_t& count) |
1005 | { | |
1006 | return Locale::getAvailableLocales(count); | |
1007 | } | |
1008 | ||
1009 | // ------------------------------------- | |
1010 | ||
729e4ab9 A |
1011 | StringEnumeration* U_EXPORT2 |
1012 | Calendar::getKeywordValuesForLocale(const char* key, | |
1013 | const Locale& locale, UBool commonlyUsed, UErrorCode& status) | |
1014 | { | |
1015 | // This is a wrapper over ucal_getKeywordValuesForLocale | |
1016 | UEnumeration *uenum = ucal_getKeywordValuesForLocale(key, locale.getName(), | |
1017 | commonlyUsed, &status); | |
1018 | if (U_FAILURE(status)) { | |
1019 | uenum_close(uenum); | |
1020 | return NULL; | |
1021 | } | |
1022 | return new UStringEnumeration(uenum); | |
1023 | } | |
1024 | ||
1025 | // ------------------------------------- | |
1026 | ||
374ca955 | 1027 | UDate U_EXPORT2 |
b75a7d8f A |
1028 | Calendar::getNow() |
1029 | { | |
374ca955 | 1030 | return uprv_getUTCtime(); // return as milliseconds |
b75a7d8f A |
1031 | } |
1032 | ||
1033 | // ------------------------------------- | |
1034 | ||
1035 | /** | |
46f4442e A |
1036 | * Gets this Calendar's current time as a long. |
1037 | * @return the current time as UTC milliseconds from the epoch. | |
1038 | */ | |
b75a7d8f A |
1039 | double |
1040 | Calendar::getTimeInMillis(UErrorCode& status) const | |
1041 | { | |
1042 | if(U_FAILURE(status)) | |
1043 | return 0.0; | |
1044 | ||
1045 | if ( ! fIsTimeSet) | |
1046 | ((Calendar*)this)->updateTime(status); | |
1047 | ||
1048 | /* Test for buffer overflows */ | |
1049 | if(U_FAILURE(status)) { | |
1050 | return 0.0; | |
1051 | } | |
1052 | return fTime; | |
1053 | } | |
1054 | ||
1055 | // ------------------------------------- | |
1056 | ||
1057 | /** | |
46f4442e | 1058 | * Sets this Calendar's current time from the given long value. |
51004dcb A |
1059 | * A status of U_ILLEGAL_ARGUMENT_ERROR is set when millis is |
1060 | * outside the range permitted by a Calendar object when not in lenient mode. | |
1061 | * when in lenient mode the out of range values are pinned to their respective min/max. | |
46f4442e A |
1062 | * @param date the new time in UTC milliseconds from the epoch. |
1063 | */ | |
b75a7d8f A |
1064 | void |
1065 | Calendar::setTimeInMillis( double millis, UErrorCode& status ) { | |
1066 | if(U_FAILURE(status)) | |
1067 | return; | |
1068 | ||
374ca955 | 1069 | if (millis > MAX_MILLIS) { |
51004dcb A |
1070 | if(isLenient()) { |
1071 | millis = MAX_MILLIS; | |
1072 | } else { | |
1073 | status = U_ILLEGAL_ARGUMENT_ERROR; | |
1074 | return; | |
1075 | } | |
374ca955 | 1076 | } else if (millis < MIN_MILLIS) { |
51004dcb A |
1077 | if(isLenient()) { |
1078 | millis = MIN_MILLIS; | |
1079 | } else { | |
1080 | status = U_ILLEGAL_ARGUMENT_ERROR; | |
1081 | return; | |
1082 | } | |
b75a7d8f | 1083 | } |
374ca955 A |
1084 | |
1085 | fTime = millis; | |
1086 | fAreFieldsSet = fAreAllFieldsSet = FALSE; | |
1087 | fIsTimeSet = fAreFieldsVirtuallySet = TRUE; | |
729e4ab9 A |
1088 | |
1089 | for (int32_t i=0; i<UCAL_FIELD_COUNT; ++i) { | |
1090 | fFields[i] = 0; | |
1091 | fStamp[i] = kUnset; | |
1092 | fIsSet[i] = FALSE; | |
1093 | } | |
1094 | ||
1095 | ||
b75a7d8f A |
1096 | } |
1097 | ||
1098 | // ------------------------------------- | |
1099 | ||
1100 | int32_t | |
1101 | Calendar::get(UCalendarDateFields field, UErrorCode& status) const | |
1102 | { | |
1103 | // field values are only computed when actually requested; for more on when computation | |
1104 | // of various things happens, see the "data flow in Calendar" description at the top | |
1105 | // of this file | |
1106 | if (U_SUCCESS(status)) ((Calendar*)this)->complete(status); // Cast away const | |
1107 | return U_SUCCESS(status) ? fFields[field] : 0; | |
1108 | } | |
1109 | ||
1110 | // ------------------------------------- | |
1111 | ||
1112 | void | |
1113 | Calendar::set(UCalendarDateFields field, int32_t value) | |
1114 | { | |
374ca955 A |
1115 | if (fAreFieldsVirtuallySet) { |
1116 | UErrorCode ec = U_ZERO_ERROR; | |
1117 | computeFields(ec); | |
1118 | } | |
b75a7d8f | 1119 | fFields[field] = value; |
4388f060 A |
1120 | /* Ensure that the fNextStamp value doesn't go pass max value for int32_t */ |
1121 | if (fNextStamp == STAMP_MAX) { | |
1122 | recalculateStamp(); | |
1123 | } | |
b75a7d8f | 1124 | fStamp[field] = fNextStamp++; |
b75a7d8f | 1125 | fIsSet[field] = TRUE; // Remove later |
374ca955 | 1126 | fIsTimeSet = fAreFieldsSet = fAreFieldsVirtuallySet = FALSE; |
b75a7d8f A |
1127 | } |
1128 | ||
1129 | // ------------------------------------- | |
1130 | ||
1131 | void | |
1132 | Calendar::set(int32_t year, int32_t month, int32_t date) | |
1133 | { | |
1134 | set(UCAL_YEAR, year); | |
1135 | set(UCAL_MONTH, month); | |
1136 | set(UCAL_DATE, date); | |
1137 | } | |
1138 | ||
1139 | // ------------------------------------- | |
1140 | ||
1141 | void | |
1142 | Calendar::set(int32_t year, int32_t month, int32_t date, int32_t hour, int32_t minute) | |
1143 | { | |
1144 | set(UCAL_YEAR, year); | |
1145 | set(UCAL_MONTH, month); | |
1146 | set(UCAL_DATE, date); | |
1147 | set(UCAL_HOUR_OF_DAY, hour); | |
1148 | set(UCAL_MINUTE, minute); | |
1149 | } | |
1150 | ||
1151 | // ------------------------------------- | |
1152 | ||
1153 | void | |
1154 | Calendar::set(int32_t year, int32_t month, int32_t date, int32_t hour, int32_t minute, int32_t second) | |
1155 | { | |
1156 | set(UCAL_YEAR, year); | |
1157 | set(UCAL_MONTH, month); | |
1158 | set(UCAL_DATE, date); | |
1159 | set(UCAL_HOUR_OF_DAY, hour); | |
1160 | set(UCAL_MINUTE, minute); | |
1161 | set(UCAL_SECOND, second); | |
1162 | } | |
1163 | ||
1164 | // ------------------------------------- | |
1165 | ||
1166 | void | |
1167 | Calendar::clear() | |
1168 | { | |
1169 | for (int32_t i=0; i<UCAL_FIELD_COUNT; ++i) { | |
1170 | fFields[i] = 0; // Must do this; other code depends on it | |
b75a7d8f | 1171 | fStamp[i] = kUnset; |
374ca955 | 1172 | fIsSet[i] = FALSE; // Remove later |
b75a7d8f | 1173 | } |
374ca955 | 1174 | fIsTimeSet = fAreFieldsSet = fAreAllFieldsSet = fAreFieldsVirtuallySet = FALSE; |
73c04bcf | 1175 | // fTime is not 'cleared' - may be used if no fields are set. |
b75a7d8f A |
1176 | } |
1177 | ||
1178 | // ------------------------------------- | |
1179 | ||
1180 | void | |
1181 | Calendar::clear(UCalendarDateFields field) | |
1182 | { | |
374ca955 A |
1183 | if (fAreFieldsVirtuallySet) { |
1184 | UErrorCode ec = U_ZERO_ERROR; | |
1185 | computeFields(ec); | |
1186 | } | |
b75a7d8f A |
1187 | fFields[field] = 0; |
1188 | fStamp[field] = kUnset; | |
b75a7d8f | 1189 | fIsSet[field] = FALSE; // Remove later |
374ca955 | 1190 | fIsTimeSet = fAreFieldsSet = fAreAllFieldsSet = fAreFieldsVirtuallySet = FALSE; |
b75a7d8f A |
1191 | } |
1192 | ||
1193 | // ------------------------------------- | |
1194 | ||
1195 | UBool | |
1196 | Calendar::isSet(UCalendarDateFields field) const | |
1197 | { | |
374ca955 A |
1198 | return fAreFieldsVirtuallySet || (fStamp[field] != kUnset); |
1199 | } | |
1200 | ||
1201 | ||
1202 | int32_t Calendar::newestStamp(UCalendarDateFields first, UCalendarDateFields last, int32_t bestStampSoFar) const | |
1203 | { | |
46f4442e A |
1204 | int32_t bestStamp = bestStampSoFar; |
1205 | for (int32_t i=(int32_t)first; i<=(int32_t)last; ++i) { | |
1206 | if (fStamp[i] > bestStamp) { | |
1207 | bestStamp = fStamp[i]; | |
1208 | } | |
374ca955 | 1209 | } |
46f4442e | 1210 | return bestStamp; |
b75a7d8f A |
1211 | } |
1212 | ||
374ca955 | 1213 | |
b75a7d8f A |
1214 | // ------------------------------------- |
1215 | ||
1216 | void | |
1217 | Calendar::complete(UErrorCode& status) | |
1218 | { | |
1219 | if (!fIsTimeSet) { | |
1220 | updateTime(status); | |
1221 | /* Test for buffer overflows */ | |
1222 | if(U_FAILURE(status)) { | |
1223 | return; | |
1224 | } | |
1225 | } | |
1226 | if (!fAreFieldsSet) { | |
1227 | computeFields(status); // fills in unset fields | |
1228 | /* Test for buffer overflows */ | |
1229 | if(U_FAILURE(status)) { | |
1230 | return; | |
1231 | } | |
1232 | fAreFieldsSet = TRUE; | |
1233 | fAreAllFieldsSet = TRUE; | |
1234 | } | |
1235 | } | |
1236 | ||
46f4442e A |
1237 | //------------------------------------------------------------------------- |
1238 | // Protected utility methods for use by subclasses. These are very handy | |
1239 | // for implementing add, roll, and computeFields. | |
1240 | //------------------------------------------------------------------------- | |
374ca955 | 1241 | |
46f4442e A |
1242 | /** |
1243 | * Adjust the specified field so that it is within | |
1244 | * the allowable range for the date to which this calendar is set. | |
1245 | * For example, in a Gregorian calendar pinning the {@link #DAY_OF_MONTH DAY_OF_MONTH} | |
1246 | * field for a calendar set to April 31 would cause it to be set | |
1247 | * to April 30. | |
1248 | * <p> | |
1249 | * <b>Subclassing:</b> | |
1250 | * <br> | |
1251 | * This utility method is intended for use by subclasses that need to implement | |
1252 | * their own overrides of {@link #roll roll} and {@link #add add}. | |
1253 | * <p> | |
1254 | * <b>Note:</b> | |
1255 | * <code>pinField</code> is implemented in terms of | |
1256 | * {@link #getActualMinimum getActualMinimum} | |
1257 | * and {@link #getActualMaximum getActualMaximum}. If either of those methods uses | |
1258 | * a slow, iterative algorithm for a particular field, it would be | |
1259 | * unwise to attempt to call <code>pinField</code> for that field. If you | |
1260 | * really do need to do so, you should override this method to do | |
1261 | * something more efficient for that field. | |
1262 | * <p> | |
1263 | * @param field The calendar field whose value should be pinned. | |
1264 | * | |
1265 | * @see #getActualMinimum | |
1266 | * @see #getActualMaximum | |
1267 | * @stable ICU 2.0 | |
1268 | */ | |
374ca955 | 1269 | void Calendar::pinField(UCalendarDateFields field, UErrorCode& status) { |
46f4442e A |
1270 | int32_t max = getActualMaximum(field, status); |
1271 | int32_t min = getActualMinimum(field, status); | |
1272 | ||
1273 | if (fFields[field] > max) { | |
1274 | set(field, max); | |
1275 | } else if (fFields[field] < min) { | |
1276 | set(field, min); | |
1277 | } | |
374ca955 A |
1278 | } |
1279 | ||
1280 | ||
1281 | void Calendar::computeFields(UErrorCode &ec) | |
1282 | { | |
1283 | if (U_FAILURE(ec)) { | |
46f4442e A |
1284 | return; |
1285 | } | |
1286 | // Compute local wall millis | |
1287 | double localMillis = internalGetTime(); | |
1288 | int32_t rawOffset, dstOffset; | |
1289 | getTimeZone().getOffset(localMillis, FALSE, rawOffset, dstOffset, ec); | |
1290 | localMillis += (rawOffset + dstOffset); | |
1291 | ||
1292 | // Mark fields as set. Do this before calling handleComputeFields(). | |
1293 | uint32_t mask = //fInternalSetMask; | |
1294 | (1 << UCAL_ERA) | | |
1295 | (1 << UCAL_YEAR) | | |
1296 | (1 << UCAL_MONTH) | | |
1297 | (1 << UCAL_DAY_OF_MONTH) | // = UCAL_DATE | |
1298 | (1 << UCAL_DAY_OF_YEAR) | | |
1299 | (1 << UCAL_EXTENDED_YEAR); | |
1300 | ||
1301 | for (int32_t i=0; i<UCAL_FIELD_COUNT; ++i) { | |
1302 | if ((mask & 1) == 0) { | |
1303 | fStamp[i] = kInternallySet; | |
1304 | fIsSet[i] = TRUE; // Remove later | |
1305 | } else { | |
1306 | fStamp[i] = kUnset; | |
1307 | fIsSet[i] = FALSE; // Remove later | |
1308 | } | |
1309 | mask >>= 1; | |
1310 | } | |
1311 | ||
1312 | // We used to check for and correct extreme millis values (near | |
1313 | // Long.MIN_VALUE or Long.MAX_VALUE) here. Such values would cause | |
1314 | // overflows from positive to negative (or vice versa) and had to | |
1315 | // be manually tweaked. We no longer need to do this because we | |
1316 | // have limited the range of supported dates to those that have a | |
1317 | // Julian day that fits into an int. This allows us to implement a | |
1318 | // JULIAN_DAY field and also removes some inelegant code. - Liu | |
1319 | // 11/6/00 | |
1320 | ||
729e4ab9 | 1321 | int32_t days = (int32_t)ClockMath::floorDivide(localMillis, (double)kOneDay); |
46f4442e A |
1322 | |
1323 | internalSet(UCAL_JULIAN_DAY,days + kEpochStartAsJulianDay); | |
374ca955 A |
1324 | |
1325 | #if defined (U_DEBUG_CAL) | |
46f4442e A |
1326 | //fprintf(stderr, "%s:%d- Hmm! Jules @ %d, as per %.0lf millis\n", |
1327 | //__FILE__, __LINE__, fFields[UCAL_JULIAN_DAY], localMillis); | |
374ca955 A |
1328 | #endif |
1329 | ||
46f4442e A |
1330 | computeGregorianAndDOWFields(fFields[UCAL_JULIAN_DAY], ec); |
1331 | ||
1332 | // Call framework method to have subclass compute its fields. | |
1333 | // These must include, at a minimum, MONTH, DAY_OF_MONTH, | |
1334 | // EXTENDED_YEAR, YEAR, DAY_OF_YEAR. This method will call internalSet(), | |
1335 | // which will update stamp[]. | |
1336 | handleComputeFields(fFields[UCAL_JULIAN_DAY], ec); | |
1337 | ||
1338 | // Compute week-related fields, based on the subclass-computed | |
1339 | // fields computed by handleComputeFields(). | |
1340 | computeWeekFields(ec); | |
1341 | ||
1342 | // Compute time-related fields. These are indepent of the date and | |
1343 | // of the subclass algorithm. They depend only on the local zone | |
1344 | // wall milliseconds in day. | |
1345 | int32_t millisInDay = (int32_t) (localMillis - (days * kOneDay)); | |
1346 | fFields[UCAL_MILLISECONDS_IN_DAY] = millisInDay; | |
1347 | fFields[UCAL_MILLISECOND] = millisInDay % 1000; | |
1348 | millisInDay /= 1000; | |
1349 | fFields[UCAL_SECOND] = millisInDay % 60; | |
1350 | millisInDay /= 60; | |
1351 | fFields[UCAL_MINUTE] = millisInDay % 60; | |
1352 | millisInDay /= 60; | |
1353 | fFields[UCAL_HOUR_OF_DAY] = millisInDay; | |
1354 | fFields[UCAL_AM_PM] = millisInDay / 12; // Assume AM == 0 | |
1355 | fFields[UCAL_HOUR] = millisInDay % 12; | |
1356 | fFields[UCAL_ZONE_OFFSET] = rawOffset; | |
1357 | fFields[UCAL_DST_OFFSET] = dstOffset; | |
374ca955 A |
1358 | } |
1359 | ||
1360 | uint8_t Calendar::julianDayToDayOfWeek(double julian) | |
1361 | { | |
46f4442e A |
1362 | // If julian is negative, then julian%7 will be negative, so we adjust |
1363 | // accordingly. We add 1 because Julian day 0 is Monday. | |
1364 | int8_t dayOfWeek = (int8_t) uprv_fmod(julian + 1, 7); | |
374ca955 | 1365 | |
46f4442e A |
1366 | uint8_t result = (uint8_t)(dayOfWeek + ((dayOfWeek < 0) ? (7+UCAL_SUNDAY ) : UCAL_SUNDAY)); |
1367 | return result; | |
374ca955 A |
1368 | } |
1369 | ||
1370 | /** | |
46f4442e A |
1371 | * Compute the Gregorian calendar year, month, and day of month from |
1372 | * the given Julian day. These values are not stored in fields, but in | |
1373 | * member variables gregorianXxx. Also compute the DAY_OF_WEEK and | |
1374 | * DOW_LOCAL fields. | |
1375 | */ | |
374ca955 A |
1376 | void Calendar::computeGregorianAndDOWFields(int32_t julianDay, UErrorCode &ec) |
1377 | { | |
46f4442e | 1378 | computeGregorianFields(julianDay, ec); |
374ca955 | 1379 | |
46f4442e A |
1380 | // Compute day of week: JD 0 = Monday |
1381 | int32_t dow = julianDayToDayOfWeek(julianDay); | |
1382 | internalSet(UCAL_DAY_OF_WEEK,dow); | |
1383 | ||
1384 | // Calculate 1-based localized day of week | |
1385 | int32_t dowLocal = dow - getFirstDayOfWeek() + 1; | |
1386 | if (dowLocal < 1) { | |
1387 | dowLocal += 7; | |
1388 | } | |
1389 | internalSet(UCAL_DOW_LOCAL,dowLocal); | |
1390 | fFields[UCAL_DOW_LOCAL] = dowLocal; | |
374ca955 A |
1391 | } |
1392 | ||
1393 | /** | |
46f4442e A |
1394 | * Compute the Gregorian calendar year, month, and day of month from the |
1395 | * Julian day. These values are not stored in fields, but in member | |
1396 | * variables gregorianXxx. They are used for time zone computations and by | |
1397 | * subclasses that are Gregorian derivatives. Subclasses may call this | |
1398 | * method to perform a Gregorian calendar millis->fields computation. | |
46f4442e | 1399 | */ |
374ca955 | 1400 | void Calendar::computeGregorianFields(int32_t julianDay, UErrorCode & /* ec */) { |
46f4442e A |
1401 | int32_t gregorianDayOfWeekUnused; |
1402 | Grego::dayToFields(julianDay - kEpochStartAsJulianDay, fGregorianYear, fGregorianMonth, fGregorianDayOfMonth, gregorianDayOfWeekUnused, fGregorianDayOfYear); | |
374ca955 A |
1403 | } |
1404 | ||
1405 | /** | |
46f4442e A |
1406 | * Compute the fields WEEK_OF_YEAR, YEAR_WOY, WEEK_OF_MONTH, |
1407 | * DAY_OF_WEEK_IN_MONTH, and DOW_LOCAL from EXTENDED_YEAR, YEAR, | |
1408 | * DAY_OF_WEEK, and DAY_OF_YEAR. The latter fields are computed by the | |
1409 | * subclass based on the calendar system. | |
1410 | * | |
1411 | * <p>The YEAR_WOY field is computed simplistically. It is equal to YEAR | |
1412 | * most of the time, but at the year boundary it may be adjusted to YEAR-1 | |
1413 | * or YEAR+1 to reflect the overlap of a week into an adjacent year. In | |
1414 | * this case, a simple increment or decrement is performed on YEAR, even | |
1415 | * though this may yield an invalid YEAR value. For instance, if the YEAR | |
1416 | * is part of a calendar system with an N-year cycle field CYCLE, then | |
1417 | * incrementing the YEAR may involve incrementing CYCLE and setting YEAR | |
1418 | * back to 0 or 1. This is not handled by this code, and in fact cannot be | |
1419 | * simply handled without having subclasses define an entire parallel set of | |
1420 | * fields for fields larger than or equal to a year. This additional | |
1421 | * complexity is not warranted, since the intention of the YEAR_WOY field is | |
1422 | * to support ISO 8601 notation, so it will typically be used with a | |
1423 | * proleptic Gregorian calendar, which has no field larger than a year. | |
1424 | */ | |
374ca955 | 1425 | void Calendar::computeWeekFields(UErrorCode &ec) { |
46f4442e A |
1426 | if(U_FAILURE(ec)) { |
1427 | return; | |
1428 | } | |
1429 | int32_t eyear = fFields[UCAL_EXTENDED_YEAR]; | |
1430 | int32_t dayOfWeek = fFields[UCAL_DAY_OF_WEEK]; | |
1431 | int32_t dayOfYear = fFields[UCAL_DAY_OF_YEAR]; | |
1432 | ||
1433 | // WEEK_OF_YEAR start | |
1434 | // Compute the week of the year. For the Gregorian calendar, valid week | |
1435 | // numbers run from 1 to 52 or 53, depending on the year, the first day | |
1436 | // of the week, and the minimal days in the first week. For other | |
1437 | // calendars, the valid range may be different -- it depends on the year | |
1438 | // length. Days at the start of the year may fall into the last week of | |
1439 | // the previous year; days at the end of the year may fall into the | |
1440 | // first week of the next year. ASSUME that the year length is less than | |
1441 | // 7000 days. | |
1442 | int32_t yearOfWeekOfYear = eyear; | |
1443 | int32_t relDow = (dayOfWeek + 7 - getFirstDayOfWeek()) % 7; // 0..6 | |
1444 | int32_t relDowJan1 = (dayOfWeek - dayOfYear + 7001 - getFirstDayOfWeek()) % 7; // 0..6 | |
1445 | int32_t woy = (dayOfYear - 1 + relDowJan1) / 7; // 0..53 | |
1446 | if ((7 - relDowJan1) >= getMinimalDaysInFirstWeek()) { | |
1447 | ++woy; | |
1448 | } | |
1449 | ||
1450 | // Adjust for weeks at the year end that overlap into the previous or | |
1451 | // next calendar year. | |
1452 | if (woy == 0) { | |
1453 | // We are the last week of the previous year. | |
1454 | // Check to see if we are in the last week; if so, we need | |
1455 | // to handle the case in which we are the first week of the | |
1456 | // next year. | |
1457 | ||
1458 | int32_t prevDoy = dayOfYear + handleGetYearLength(eyear - 1); | |
1459 | woy = weekNumber(prevDoy, dayOfWeek); | |
1460 | yearOfWeekOfYear--; | |
1461 | } else { | |
1462 | int32_t lastDoy = handleGetYearLength(eyear); | |
1463 | // Fast check: For it to be week 1 of the next year, the DOY | |
1464 | // must be on or after L-5, where L is yearLength(), then it | |
1465 | // cannot possibly be week 1 of the next year: | |
1466 | // L-5 L | |
1467 | // doy: 359 360 361 362 363 364 365 001 | |
1468 | // dow: 1 2 3 4 5 6 7 | |
1469 | if (dayOfYear >= (lastDoy - 5)) { | |
1470 | int32_t lastRelDow = (relDow + lastDoy - dayOfYear) % 7; | |
1471 | if (lastRelDow < 0) { | |
1472 | lastRelDow += 7; | |
1473 | } | |
1474 | if (((6 - lastRelDow) >= getMinimalDaysInFirstWeek()) && | |
1475 | ((dayOfYear + 7 - relDow) > lastDoy)) { | |
1476 | woy = 1; | |
1477 | yearOfWeekOfYear++; | |
1478 | } | |
1479 | } | |
1480 | } | |
1481 | fFields[UCAL_WEEK_OF_YEAR] = woy; | |
1482 | fFields[UCAL_YEAR_WOY] = yearOfWeekOfYear; | |
1483 | // WEEK_OF_YEAR end | |
1484 | ||
1485 | int32_t dayOfMonth = fFields[UCAL_DAY_OF_MONTH]; | |
1486 | fFields[UCAL_WEEK_OF_MONTH] = weekNumber(dayOfMonth, dayOfWeek); | |
1487 | fFields[UCAL_DAY_OF_WEEK_IN_MONTH] = (dayOfMonth-1) / 7 + 1; | |
374ca955 | 1488 | #if defined (U_DEBUG_CAL) |
46f4442e A |
1489 | if(fFields[UCAL_DAY_OF_WEEK_IN_MONTH]==0) fprintf(stderr, "%s:%d: DOWIM %d on %g\n", |
1490 | __FILE__, __LINE__,fFields[UCAL_DAY_OF_WEEK_IN_MONTH], fTime); | |
374ca955 A |
1491 | #endif |
1492 | } | |
1493 | ||
1494 | ||
1495 | int32_t Calendar::weekNumber(int32_t desiredDay, int32_t dayOfPeriod, int32_t dayOfWeek) | |
1496 | { | |
46f4442e A |
1497 | // Determine the day of the week of the first day of the period |
1498 | // in question (either a year or a month). Zero represents the | |
1499 | // first day of the week on this calendar. | |
1500 | int32_t periodStartDayOfWeek = (dayOfWeek - getFirstDayOfWeek() - dayOfPeriod + 1) % 7; | |
1501 | if (periodStartDayOfWeek < 0) periodStartDayOfWeek += 7; | |
1502 | ||
1503 | // Compute the week number. Initially, ignore the first week, which | |
1504 | // may be fractional (or may not be). We add periodStartDayOfWeek in | |
1505 | // order to fill out the first week, if it is fractional. | |
1506 | int32_t weekNo = (desiredDay + periodStartDayOfWeek - 1)/7; | |
1507 | ||
1508 | // If the first week is long enough, then count it. If | |
1509 | // the minimal days in the first week is one, or if the period start | |
1510 | // is zero, we always increment weekNo. | |
1511 | if ((7 - periodStartDayOfWeek) >= getMinimalDaysInFirstWeek()) ++weekNo; | |
1512 | ||
1513 | return weekNo; | |
374ca955 A |
1514 | } |
1515 | ||
1516 | void Calendar::handleComputeFields(int32_t /* julianDay */, UErrorCode &/* status */) | |
1517 | { | |
46f4442e A |
1518 | internalSet(UCAL_MONTH, getGregorianMonth()); |
1519 | internalSet(UCAL_DAY_OF_MONTH, getGregorianDayOfMonth()); | |
1520 | internalSet(UCAL_DAY_OF_YEAR, getGregorianDayOfYear()); | |
1521 | int32_t eyear = getGregorianYear(); | |
1522 | internalSet(UCAL_EXTENDED_YEAR, eyear); | |
1523 | int32_t era = GregorianCalendar::AD; | |
1524 | if (eyear < 1) { | |
1525 | era = GregorianCalendar::BC; | |
1526 | eyear = 1 - eyear; | |
1527 | } | |
1528 | internalSet(UCAL_ERA, era); | |
1529 | internalSet(UCAL_YEAR, eyear); | |
374ca955 | 1530 | } |
b75a7d8f | 1531 | // ------------------------------------- |
b75a7d8f | 1532 | |
b75a7d8f | 1533 | |
374ca955 A |
1534 | void Calendar::roll(EDateFields field, int32_t amount, UErrorCode& status) |
1535 | { | |
46f4442e | 1536 | roll((UCalendarDateFields)field, amount, status); |
b75a7d8f A |
1537 | } |
1538 | ||
374ca955 A |
1539 | void Calendar::roll(UCalendarDateFields field, int32_t amount, UErrorCode& status) |
1540 | { | |
46f4442e A |
1541 | if (amount == 0) { |
1542 | return; // Nothing to do | |
1543 | } | |
1544 | ||
1545 | complete(status); | |
1546 | ||
1547 | if(U_FAILURE(status)) { | |
1548 | return; | |
1549 | } | |
1550 | switch (field) { | |
1551 | case UCAL_DAY_OF_MONTH: | |
1552 | case UCAL_AM_PM: | |
1553 | case UCAL_MINUTE: | |
1554 | case UCAL_SECOND: | |
1555 | case UCAL_MILLISECOND: | |
1556 | case UCAL_MILLISECONDS_IN_DAY: | |
1557 | case UCAL_ERA: | |
1558 | // These are the standard roll instructions. These work for all | |
1559 | // simple cases, that is, cases in which the limits are fixed, such | |
1560 | // as the hour, the day of the month, and the era. | |
1561 | { | |
1562 | int32_t min = getActualMinimum(field,status); | |
1563 | int32_t max = getActualMaximum(field,status); | |
1564 | int32_t gap = max - min + 1; | |
1565 | ||
1566 | int32_t value = internalGet(field) + amount; | |
1567 | value = (value - min) % gap; | |
1568 | if (value < 0) { | |
1569 | value += gap; | |
1570 | } | |
1571 | value += min; | |
1572 | ||
1573 | set(field, value); | |
1574 | return; | |
1575 | } | |
1576 | ||
1577 | case UCAL_HOUR: | |
1578 | case UCAL_HOUR_OF_DAY: | |
1579 | // Rolling the hour is difficult on the ONSET and CEASE days of | |
1580 | // daylight savings. For example, if the change occurs at | |
1581 | // 2 AM, we have the following progression: | |
1582 | // ONSET: 12 Std -> 1 Std -> 3 Dst -> 4 Dst | |
1583 | // CEASE: 12 Dst -> 1 Dst -> 1 Std -> 2 Std | |
1584 | // To get around this problem we don't use fields; we manipulate | |
1585 | // the time in millis directly. | |
1586 | { | |
1587 | // Assume min == 0 in calculations below | |
1588 | double start = getTimeInMillis(status); | |
1589 | int32_t oldHour = internalGet(field); | |
1590 | int32_t max = getMaximum(field); | |
1591 | int32_t newHour = (oldHour + amount) % (max + 1); | |
1592 | if (newHour < 0) { | |
1593 | newHour += max + 1; | |
1594 | } | |
1595 | setTimeInMillis(start + kOneHour * (newHour - oldHour),status); | |
1596 | return; | |
1597 | } | |
1598 | ||
1599 | case UCAL_MONTH: | |
1600 | // Rolling the month involves both pinning the final value | |
1601 | // and adjusting the DAY_OF_MONTH if necessary. We only adjust the | |
1602 | // DAY_OF_MONTH if, after updating the MONTH field, it is illegal. | |
1603 | // E.g., <jan31>.roll(MONTH, 1) -> <feb28> or <feb29>. | |
1604 | { | |
1605 | int32_t max = getActualMaximum(UCAL_MONTH, status); | |
1606 | int32_t mon = (internalGet(UCAL_MONTH) + amount) % (max+1); | |
1607 | ||
1608 | if (mon < 0) { | |
1609 | mon += (max + 1); | |
1610 | } | |
1611 | set(UCAL_MONTH, mon); | |
1612 | ||
1613 | // Keep the day of month in range. We don't want to spill over | |
1614 | // into the next month; e.g., we don't want jan31 + 1 mo -> feb31 -> | |
1615 | // mar3. | |
1616 | pinField(UCAL_DAY_OF_MONTH,status); | |
1617 | return; | |
1618 | } | |
1619 | ||
1620 | case UCAL_YEAR: | |
1621 | case UCAL_YEAR_WOY: | |
51004dcb A |
1622 | { |
1623 | // * If era==0 and years go backwards in time, change sign of amount. | |
1624 | // * Until we have new API per #9393, we temporarily hardcode knowledge of | |
1625 | // which calendars have era 0 years that go backwards. | |
1626 | UBool era0WithYearsThatGoBackwards = FALSE; | |
1627 | int32_t era = get(UCAL_ERA, status); | |
1628 | if (era == 0) { | |
1629 | const char * calType = getType(); | |
1630 | if ( uprv_strcmp(calType,"gregorian")==0 || uprv_strcmp(calType,"roc")==0 || uprv_strcmp(calType,"coptic")==0 ) { | |
1631 | amount = -amount; | |
1632 | era0WithYearsThatGoBackwards = TRUE; | |
1633 | } | |
1634 | } | |
1635 | int32_t newYear = internalGet(field) + amount; | |
1636 | if (era > 0 || newYear >= 1) { | |
1637 | int32_t maxYear = getActualMaximum(field, status); | |
1638 | if (maxYear < 32768) { | |
1639 | // this era has real bounds, roll should wrap years | |
1640 | if (newYear < 1) { | |
1641 | newYear = maxYear - ((-newYear) % maxYear); | |
1642 | } else if (newYear > maxYear) { | |
1643 | newYear = ((newYear - 1) % maxYear) + 1; | |
1644 | } | |
1645 | // else era is unbounded, just pin low year instead of wrapping | |
1646 | } else if (newYear < 1) { | |
1647 | newYear = 1; | |
1648 | } | |
1649 | // else we are in era 0 with newYear < 1; | |
1650 | // calendars with years that go backwards must pin the year value at 0, | |
1651 | // other calendars can have years < 0 in era 0 | |
1652 | } else if (era0WithYearsThatGoBackwards) { | |
1653 | newYear = 1; | |
1654 | } | |
1655 | set(field, newYear); | |
1656 | pinField(UCAL_MONTH,status); | |
1657 | pinField(UCAL_DAY_OF_MONTH,status); | |
1658 | return; | |
1659 | } | |
1660 | ||
46f4442e A |
1661 | case UCAL_EXTENDED_YEAR: |
1662 | // Rolling the year can involve pinning the DAY_OF_MONTH. | |
1663 | set(field, internalGet(field) + amount); | |
1664 | pinField(UCAL_MONTH,status); | |
1665 | pinField(UCAL_DAY_OF_MONTH,status); | |
1666 | return; | |
1667 | ||
1668 | case UCAL_WEEK_OF_MONTH: | |
1669 | { | |
1670 | // This is tricky, because during the roll we may have to shift | |
1671 | // to a different day of the week. For example: | |
1672 | ||
1673 | // s m t w r f s | |
1674 | // 1 2 3 4 5 | |
1675 | // 6 7 8 9 10 11 12 | |
1676 | ||
1677 | // When rolling from the 6th or 7th back one week, we go to the | |
1678 | // 1st (assuming that the first partial week counts). The same | |
1679 | // thing happens at the end of the month. | |
1680 | ||
1681 | // The other tricky thing is that we have to figure out whether | |
1682 | // the first partial week actually counts or not, based on the | |
1683 | // minimal first days in the week. And we have to use the | |
1684 | // correct first day of the week to delineate the week | |
1685 | // boundaries. | |
1686 | ||
1687 | // Here's our algorithm. First, we find the real boundaries of | |
1688 | // the month. Then we discard the first partial week if it | |
1689 | // doesn't count in this locale. Then we fill in the ends with | |
1690 | // phantom days, so that the first partial week and the last | |
1691 | // partial week are full weeks. We then have a nice square | |
1692 | // block of weeks. We do the usual rolling within this block, | |
1693 | // as is done elsewhere in this method. If we wind up on one of | |
1694 | // the phantom days that we added, we recognize this and pin to | |
1695 | // the first or the last day of the month. Easy, eh? | |
1696 | ||
1697 | // Normalize the DAY_OF_WEEK so that 0 is the first day of the week | |
1698 | // in this locale. We have dow in 0..6. | |
1699 | int32_t dow = internalGet(UCAL_DAY_OF_WEEK) - getFirstDayOfWeek(); | |
1700 | if (dow < 0) dow += 7; | |
1701 | ||
1702 | // Find the day of the week (normalized for locale) for the first | |
1703 | // of the month. | |
1704 | int32_t fdm = (dow - internalGet(UCAL_DAY_OF_MONTH) + 1) % 7; | |
1705 | if (fdm < 0) fdm += 7; | |
1706 | ||
1707 | // Get the first day of the first full week of the month, | |
1708 | // including phantom days, if any. Figure out if the first week | |
1709 | // counts or not; if it counts, then fill in phantom days. If | |
1710 | // not, advance to the first real full week (skip the partial week). | |
1711 | int32_t start; | |
1712 | if ((7 - fdm) < getMinimalDaysInFirstWeek()) | |
1713 | start = 8 - fdm; // Skip the first partial week | |
1714 | else | |
1715 | start = 1 - fdm; // This may be zero or negative | |
1716 | ||
1717 | // Get the day of the week (normalized for locale) for the last | |
1718 | // day of the month. | |
1719 | int32_t monthLen = getActualMaximum(UCAL_DAY_OF_MONTH, status); | |
1720 | int32_t ldm = (monthLen - internalGet(UCAL_DAY_OF_MONTH) + dow) % 7; | |
1721 | // We know monthLen >= DAY_OF_MONTH so we skip the += 7 step here. | |
1722 | ||
1723 | // Get the limit day for the blocked-off rectangular month; that | |
1724 | // is, the day which is one past the last day of the month, | |
1725 | // after the month has already been filled in with phantom days | |
1726 | // to fill out the last week. This day has a normalized DOW of 0. | |
1727 | int32_t limit = monthLen + 7 - ldm; | |
1728 | ||
1729 | // Now roll between start and (limit - 1). | |
1730 | int32_t gap = limit - start; | |
1731 | int32_t day_of_month = (internalGet(UCAL_DAY_OF_MONTH) + amount*7 - | |
1732 | start) % gap; | |
1733 | if (day_of_month < 0) day_of_month += gap; | |
1734 | day_of_month += start; | |
1735 | ||
1736 | // Finally, pin to the real start and end of the month. | |
1737 | if (day_of_month < 1) day_of_month = 1; | |
1738 | if (day_of_month > monthLen) day_of_month = monthLen; | |
1739 | ||
1740 | // Set the DAY_OF_MONTH. We rely on the fact that this field | |
1741 | // takes precedence over everything else (since all other fields | |
1742 | // are also set at this point). If this fact changes (if the | |
1743 | // disambiguation algorithm changes) then we will have to unset | |
1744 | // the appropriate fields here so that DAY_OF_MONTH is attended | |
1745 | // to. | |
1746 | set(UCAL_DAY_OF_MONTH, day_of_month); | |
1747 | return; | |
1748 | } | |
1749 | case UCAL_WEEK_OF_YEAR: | |
1750 | { | |
1751 | // This follows the outline of WEEK_OF_MONTH, except it applies | |
1752 | // to the whole year. Please see the comment for WEEK_OF_MONTH | |
1753 | // for general notes. | |
1754 | ||
1755 | // Normalize the DAY_OF_WEEK so that 0 is the first day of the week | |
1756 | // in this locale. We have dow in 0..6. | |
1757 | int32_t dow = internalGet(UCAL_DAY_OF_WEEK) - getFirstDayOfWeek(); | |
1758 | if (dow < 0) dow += 7; | |
1759 | ||
1760 | // Find the day of the week (normalized for locale) for the first | |
1761 | // of the year. | |
1762 | int32_t fdy = (dow - internalGet(UCAL_DAY_OF_YEAR) + 1) % 7; | |
1763 | if (fdy < 0) fdy += 7; | |
1764 | ||
1765 | // Get the first day of the first full week of the year, | |
1766 | // including phantom days, if any. Figure out if the first week | |
1767 | // counts or not; if it counts, then fill in phantom days. If | |
1768 | // not, advance to the first real full week (skip the partial week). | |
1769 | int32_t start; | |
1770 | if ((7 - fdy) < getMinimalDaysInFirstWeek()) | |
1771 | start = 8 - fdy; // Skip the first partial week | |
1772 | else | |
1773 | start = 1 - fdy; // This may be zero or negative | |
1774 | ||
1775 | // Get the day of the week (normalized for locale) for the last | |
1776 | // day of the year. | |
1777 | int32_t yearLen = getActualMaximum(UCAL_DAY_OF_YEAR,status); | |
1778 | int32_t ldy = (yearLen - internalGet(UCAL_DAY_OF_YEAR) + dow) % 7; | |
1779 | // We know yearLen >= DAY_OF_YEAR so we skip the += 7 step here. | |
1780 | ||
1781 | // Get the limit day for the blocked-off rectangular year; that | |
1782 | // is, the day which is one past the last day of the year, | |
1783 | // after the year has already been filled in with phantom days | |
1784 | // to fill out the last week. This day has a normalized DOW of 0. | |
1785 | int32_t limit = yearLen + 7 - ldy; | |
1786 | ||
1787 | // Now roll between start and (limit - 1). | |
1788 | int32_t gap = limit - start; | |
1789 | int32_t day_of_year = (internalGet(UCAL_DAY_OF_YEAR) + amount*7 - | |
1790 | start) % gap; | |
1791 | if (day_of_year < 0) day_of_year += gap; | |
1792 | day_of_year += start; | |
1793 | ||
1794 | // Finally, pin to the real start and end of the month. | |
1795 | if (day_of_year < 1) day_of_year = 1; | |
1796 | if (day_of_year > yearLen) day_of_year = yearLen; | |
1797 | ||
1798 | // Make sure that the year and day of year are attended to by | |
1799 | // clearing other fields which would normally take precedence. | |
1800 | // If the disambiguation algorithm is changed, this section will | |
1801 | // have to be updated as well. | |
1802 | set(UCAL_DAY_OF_YEAR, day_of_year); | |
1803 | clear(UCAL_MONTH); | |
1804 | return; | |
1805 | } | |
1806 | case UCAL_DAY_OF_YEAR: | |
1807 | { | |
1808 | // Roll the day of year using millis. Compute the millis for | |
1809 | // the start of the year, and get the length of the year. | |
1810 | double delta = amount * kOneDay; // Scale up from days to millis | |
1811 | double min2 = internalGet(UCAL_DAY_OF_YEAR)-1; | |
1812 | min2 *= kOneDay; | |
1813 | min2 = internalGetTime() - min2; | |
1814 | ||
1815 | // double min2 = internalGetTime() - (internalGet(UCAL_DAY_OF_YEAR) - 1.0) * kOneDay; | |
1816 | double newtime; | |
1817 | ||
1818 | double yearLength = getActualMaximum(UCAL_DAY_OF_YEAR,status); | |
1819 | double oneYear = yearLength; | |
1820 | oneYear *= kOneDay; | |
1821 | newtime = uprv_fmod((internalGetTime() + delta - min2), oneYear); | |
1822 | if (newtime < 0) newtime += oneYear; | |
1823 | setTimeInMillis(newtime + min2, status); | |
1824 | return; | |
1825 | } | |
1826 | case UCAL_DAY_OF_WEEK: | |
1827 | case UCAL_DOW_LOCAL: | |
1828 | { | |
1829 | // Roll the day of week using millis. Compute the millis for | |
1830 | // the start of the week, using the first day of week setting. | |
1831 | // Restrict the millis to [start, start+7days). | |
1832 | double delta = amount * kOneDay; // Scale up from days to millis | |
1833 | // Compute the number of days before the current day in this | |
1834 | // week. This will be a value 0..6. | |
1835 | int32_t leadDays = internalGet(field); | |
1836 | leadDays -= (field == UCAL_DAY_OF_WEEK) ? getFirstDayOfWeek() : 1; | |
1837 | if (leadDays < 0) leadDays += 7; | |
1838 | double min2 = internalGetTime() - leadDays * kOneDay; | |
1839 | double newtime = uprv_fmod((internalGetTime() + delta - min2), kOneWeek); | |
1840 | if (newtime < 0) newtime += kOneWeek; | |
1841 | setTimeInMillis(newtime + min2, status); | |
1842 | return; | |
1843 | } | |
1844 | case UCAL_DAY_OF_WEEK_IN_MONTH: | |
1845 | { | |
1846 | // Roll the day of week in the month using millis. Determine | |
1847 | // the first day of the week in the month, and then the last, | |
1848 | // and then roll within that range. | |
1849 | double delta = amount * kOneWeek; // Scale up from weeks to millis | |
1850 | // Find the number of same days of the week before this one | |
1851 | // in this month. | |
1852 | int32_t preWeeks = (internalGet(UCAL_DAY_OF_MONTH) - 1) / 7; | |
1853 | // Find the number of same days of the week after this one | |
1854 | // in this month. | |
1855 | int32_t postWeeks = (getActualMaximum(UCAL_DAY_OF_MONTH,status) - | |
1856 | internalGet(UCAL_DAY_OF_MONTH)) / 7; | |
1857 | // From these compute the min and gap millis for rolling. | |
1858 | double min2 = internalGetTime() - preWeeks * kOneWeek; | |
1859 | double gap2 = kOneWeek * (preWeeks + postWeeks + 1); // Must add 1! | |
1860 | // Roll within this range | |
1861 | double newtime = uprv_fmod((internalGetTime() + delta - min2), gap2); | |
1862 | if (newtime < 0) newtime += gap2; | |
1863 | setTimeInMillis(newtime + min2, status); | |
1864 | return; | |
1865 | } | |
1866 | case UCAL_JULIAN_DAY: | |
1867 | set(field, internalGet(field) + amount); | |
1868 | return; | |
1869 | default: | |
1870 | // Other fields cannot be rolled by this method | |
374ca955 | 1871 | #if defined (U_DEBUG_CAL) |
46f4442e A |
1872 | fprintf(stderr, "%s:%d: ILLEGAL ARG because of roll on non-rollable field %s\n", |
1873 | __FILE__, __LINE__,fldName(field)); | |
374ca955 | 1874 | #endif |
46f4442e A |
1875 | status = U_ILLEGAL_ARGUMENT_ERROR; |
1876 | } | |
374ca955 A |
1877 | } |
1878 | ||
1879 | void Calendar::add(EDateFields field, int32_t amount, UErrorCode& status) | |
1880 | { | |
46f4442e | 1881 | Calendar::add((UCalendarDateFields)field, amount, status); |
374ca955 A |
1882 | } |
1883 | ||
1884 | // ------------------------------------- | |
1885 | void Calendar::add(UCalendarDateFields field, int32_t amount, UErrorCode& status) | |
1886 | { | |
46f4442e A |
1887 | if (amount == 0) { |
1888 | return; // Do nothing! | |
1889 | } | |
1890 | ||
1891 | // We handle most fields in the same way. The algorithm is to add | |
1892 | // a computed amount of millis to the current millis. The only | |
4388f060 A |
1893 | // wrinkle is with DST (and/or a change to the zone's UTC offset, which |
1894 | // we'll include with DST) -- for some fields, like the DAY_OF_MONTH, | |
46f4442e A |
1895 | // we don't want the HOUR to shift due to changes in DST. If the |
1896 | // result of the add operation is to move from DST to Standard, or | |
1897 | // vice versa, we need to adjust by an hour forward or back, | |
1898 | // respectively. For such fields we set keepHourInvariant to TRUE. | |
1899 | ||
1900 | // We only adjust the DST for fields larger than an hour. For | |
1901 | // fields smaller than an hour, we cannot adjust for DST without | |
1902 | // causing problems. for instance, if you add one hour to April 5, | |
1903 | // 1998, 1:00 AM, in PST, the time becomes "2:00 AM PDT" (an | |
1904 | // illegal value), but then the adjustment sees the change and | |
1905 | // compensates by subtracting an hour. As a result the time | |
1906 | // doesn't advance at all. | |
1907 | ||
1908 | // For some fields larger than a day, such as a UCAL_MONTH, we pin the | |
1909 | // UCAL_DAY_OF_MONTH. This allows <March 31>.add(UCAL_MONTH, 1) to be | |
1910 | // <April 30>, rather than <April 31> => <May 1>. | |
1911 | ||
1912 | double delta = amount; // delta in ms | |
1913 | UBool keepHourInvariant = TRUE; | |
1914 | ||
1915 | switch (field) { | |
1916 | case UCAL_ERA: | |
1917 | set(field, get(field, status) + amount); | |
1918 | pinField(UCAL_ERA, status); | |
1919 | return; | |
1920 | ||
1921 | case UCAL_YEAR: | |
46f4442e | 1922 | case UCAL_YEAR_WOY: |
51004dcb A |
1923 | { |
1924 | // * If era=0 and years go backwards in time, change sign of amount. | |
1925 | // * Until we have new API per #9393, we temporarily hardcode knowledge of | |
1926 | // which calendars have era 0 years that go backwards. | |
1927 | // * Note that for UCAL_YEAR (but not UCAL_YEAR_WOY) we could instead handle | |
1928 | // this by applying the amount to the UCAL_EXTENDED_YEAR field; but since | |
1929 | // we would still need to handle UCAL_YEAR_WOY as below, might as well | |
1930 | // also handle UCAL_YEAR the same way. | |
1931 | int32_t era = get(UCAL_ERA, status); | |
1932 | if (era == 0) { | |
1933 | const char * calType = getType(); | |
1934 | if ( uprv_strcmp(calType,"gregorian")==0 || uprv_strcmp(calType,"roc")==0 || uprv_strcmp(calType,"coptic")==0 ) { | |
1935 | amount = -amount; | |
1936 | } | |
1937 | } | |
1938 | } | |
1939 | // Fall through into normal handling | |
1940 | case UCAL_EXTENDED_YEAR: | |
46f4442e | 1941 | case UCAL_MONTH: |
4388f060 A |
1942 | { |
1943 | UBool oldLenient = isLenient(); | |
1944 | setLenient(TRUE); | |
46f4442e A |
1945 | set(field, get(field, status) + amount); |
1946 | pinField(UCAL_DAY_OF_MONTH, status); | |
4388f060 A |
1947 | if(oldLenient==FALSE) { |
1948 | complete(status); /* force recalculate */ | |
1949 | setLenient(oldLenient); | |
1950 | } | |
1951 | } | |
1952 | return; | |
46f4442e A |
1953 | |
1954 | case UCAL_WEEK_OF_YEAR: | |
1955 | case UCAL_WEEK_OF_MONTH: | |
1956 | case UCAL_DAY_OF_WEEK_IN_MONTH: | |
1957 | delta *= kOneWeek; | |
1958 | break; | |
1959 | ||
1960 | case UCAL_AM_PM: | |
1961 | delta *= 12 * kOneHour; | |
1962 | break; | |
1963 | ||
1964 | case UCAL_DAY_OF_MONTH: | |
1965 | case UCAL_DAY_OF_YEAR: | |
1966 | case UCAL_DAY_OF_WEEK: | |
1967 | case UCAL_DOW_LOCAL: | |
1968 | case UCAL_JULIAN_DAY: | |
1969 | delta *= kOneDay; | |
1970 | break; | |
1971 | ||
1972 | case UCAL_HOUR_OF_DAY: | |
1973 | case UCAL_HOUR: | |
1974 | delta *= kOneHour; | |
1975 | keepHourInvariant = FALSE; | |
1976 | break; | |
1977 | ||
1978 | case UCAL_MINUTE: | |
1979 | delta *= kOneMinute; | |
1980 | keepHourInvariant = FALSE; | |
1981 | break; | |
1982 | ||
1983 | case UCAL_SECOND: | |
1984 | delta *= kOneSecond; | |
1985 | keepHourInvariant = FALSE; | |
1986 | break; | |
1987 | ||
1988 | case UCAL_MILLISECOND: | |
1989 | case UCAL_MILLISECONDS_IN_DAY: | |
1990 | keepHourInvariant = FALSE; | |
1991 | break; | |
1992 | ||
1993 | default: | |
374ca955 | 1994 | #if defined (U_DEBUG_CAL) |
46f4442e | 1995 | fprintf(stderr, "%s:%d: ILLEGAL ARG because field %s not addable", |
374ca955 A |
1996 | __FILE__, __LINE__, fldName(field)); |
1997 | #endif | |
46f4442e A |
1998 | status = U_ILLEGAL_ARGUMENT_ERROR; |
1999 | return; | |
2000 | // throw new IllegalArgumentException("Calendar.add(" + fieldName(field) + | |
2001 | // ") not supported"); | |
2002 | } | |
2003 | ||
2004 | // In order to keep the hour invariant (for fields where this is | |
4388f060 A |
2005 | // appropriate), check the combined DST & ZONE offset before and |
2006 | // after the add() operation. If it changes, then adjust the millis | |
2007 | // to compensate. | |
2008 | int32_t prevOffset = 0; | |
46f4442e A |
2009 | int32_t hour = 0; |
2010 | if (keepHourInvariant) { | |
4388f060 | 2011 | prevOffset = get(UCAL_DST_OFFSET, status) + get(UCAL_ZONE_OFFSET, status); |
46f4442e A |
2012 | hour = internalGet(UCAL_HOUR_OF_DAY); |
2013 | } | |
2014 | ||
2015 | setTimeInMillis(getTimeInMillis(status) + delta, status); | |
2016 | ||
2017 | if (keepHourInvariant) { | |
4388f060 A |
2018 | int32_t newOffset = get(UCAL_DST_OFFSET, status) + get(UCAL_ZONE_OFFSET, status); |
2019 | if (newOffset != prevOffset) { | |
46f4442e | 2020 | // We have done an hour-invariant adjustment but the |
4388f060 A |
2021 | // combined offset has changed. We adjust millis to keep |
2022 | // the hour constant. In cases such as midnight after | |
46f4442e | 2023 | // a DST change which occurs at midnight, there is the |
4388f060 | 2024 | // danger of adjusting into a different day. To avoid |
46f4442e A |
2025 | // this we make the adjustment only if it actually |
2026 | // maintains the hour. | |
51004dcb A |
2027 | |
2028 | // When the difference of the previous UTC offset and | |
2029 | // the new UTC offset exceeds 1 full day, we do not want | |
2030 | // to roll over/back the date. For now, this only happens | |
2031 | // in Samoa (Pacific/Apia) on Dec 30, 2011. See ticket:9452. | |
2032 | int32_t adjAmount = prevOffset - newOffset; | |
2033 | adjAmount = adjAmount >= 0 ? adjAmount % (int32_t)kOneDay : -(-adjAmount % (int32_t)kOneDay); | |
2034 | if (adjAmount != 0) { | |
2035 | double t = internalGetTime(); | |
2036 | setTimeInMillis(t + adjAmount, status); | |
2037 | if (get(UCAL_HOUR_OF_DAY, status) != hour) { | |
2038 | setTimeInMillis(t, status); | |
2039 | } | |
46f4442e A |
2040 | } |
2041 | } | |
2042 | } | |
374ca955 A |
2043 | } |
2044 | ||
2045 | // ------------------------------------- | |
2046 | int32_t Calendar::fieldDifference(UDate when, EDateFields field, UErrorCode& status) { | |
46f4442e | 2047 | return fieldDifference(when, (UCalendarDateFields) field, status); |
374ca955 A |
2048 | } |
2049 | ||
2050 | int32_t Calendar::fieldDifference(UDate targetMs, UCalendarDateFields field, UErrorCode& ec) { | |
2051 | if (U_FAILURE(ec)) return 0; | |
2052 | int32_t min = 0; | |
2053 | double startMs = getTimeInMillis(ec); | |
2054 | // Always add from the start millis. This accomodates | |
2055 | // operations like adding years from February 29, 2000 up to | |
2056 | // February 29, 2004. If 1, 1, 1, 1 is added to the year | |
2057 | // field, the DOM gets pinned to 28 and stays there, giving an | |
2058 | // incorrect DOM difference of 1. We have to add 1, reset, 2, | |
2059 | // reset, 3, reset, 4. | |
2060 | if (startMs < targetMs) { | |
2061 | int32_t max = 1; | |
2062 | // Find a value that is too large | |
2063 | while (U_SUCCESS(ec)) { | |
2064 | setTimeInMillis(startMs, ec); | |
2065 | add(field, max, ec); | |
2066 | double ms = getTimeInMillis(ec); | |
2067 | if (ms == targetMs) { | |
2068 | return max; | |
2069 | } else if (ms > targetMs) { | |
2070 | break; | |
4388f060 | 2071 | } else if (max < INT32_MAX) { |
729e4ab9 | 2072 | min = max; |
374ca955 | 2073 | max <<= 1; |
b75a7d8f | 2074 | if (max < 0) { |
4388f060 A |
2075 | max = INT32_MAX; |
2076 | } | |
2077 | } else { | |
2078 | // Field difference too large to fit into int32_t | |
374ca955 | 2079 | #if defined (U_DEBUG_CAL) |
4388f060 A |
2080 | fprintf(stderr, "%s:%d: ILLEGAL ARG because field %s's max too large for int32_t\n", |
2081 | __FILE__, __LINE__, fldName(field)); | |
374ca955 | 2082 | #endif |
4388f060 | 2083 | ec = U_ILLEGAL_ARGUMENT_ERROR; |
b75a7d8f A |
2084 | } |
2085 | } | |
2086 | // Do a binary search | |
2087 | while ((max - min) > 1 && U_SUCCESS(ec)) { | |
4388f060 | 2088 | int32_t t = min + (max - min)/2; // make sure intermediate values don't exceed INT32_MAX |
b75a7d8f A |
2089 | setTimeInMillis(startMs, ec); |
2090 | add(field, t, ec); | |
2091 | double ms = getTimeInMillis(ec); | |
2092 | if (ms == targetMs) { | |
2093 | return t; | |
2094 | } else if (ms > targetMs) { | |
2095 | max = t; | |
2096 | } else { | |
2097 | min = t; | |
2098 | } | |
2099 | } | |
2100 | } else if (startMs > targetMs) { | |
2101 | int32_t max = -1; | |
2102 | // Find a value that is too small | |
2103 | while (U_SUCCESS(ec)) { | |
2104 | setTimeInMillis(startMs, ec); | |
2105 | add(field, max, ec); | |
2106 | double ms = getTimeInMillis(ec); | |
2107 | if (ms == targetMs) { | |
2108 | return max; | |
2109 | } else if (ms < targetMs) { | |
2110 | break; | |
2111 | } else { | |
729e4ab9 | 2112 | min = max; |
b75a7d8f A |
2113 | max <<= 1; |
2114 | if (max == 0) { | |
2115 | // Field difference too large to fit into int32_t | |
374ca955 | 2116 | #if defined (U_DEBUG_CAL) |
46f4442e A |
2117 | fprintf(stderr, "%s:%d: ILLEGAL ARG because field %s's max too large for int32_t\n", |
2118 | __FILE__, __LINE__, fldName(field)); | |
374ca955 | 2119 | #endif |
b75a7d8f A |
2120 | ec = U_ILLEGAL_ARGUMENT_ERROR; |
2121 | } | |
2122 | } | |
2123 | } | |
2124 | // Do a binary search | |
2125 | while ((min - max) > 1 && U_SUCCESS(ec)) { | |
4388f060 | 2126 | int32_t t = min + (max - min)/2; // make sure intermediate values don't exceed INT32_MAX |
b75a7d8f A |
2127 | setTimeInMillis(startMs, ec); |
2128 | add(field, t, ec); | |
2129 | double ms = getTimeInMillis(ec); | |
2130 | if (ms == targetMs) { | |
2131 | return t; | |
2132 | } else if (ms < targetMs) { | |
2133 | max = t; | |
2134 | } else { | |
2135 | min = t; | |
2136 | } | |
2137 | } | |
2138 | } | |
2139 | // Set calendar to end point | |
2140 | setTimeInMillis(startMs, ec); | |
2141 | add(field, min, ec); | |
46f4442e | 2142 | |
b75a7d8f A |
2143 | /* Test for buffer overflows */ |
2144 | if(U_FAILURE(ec)) { | |
2145 | return 0; | |
2146 | } | |
2147 | return min; | |
2148 | } | |
2149 | ||
2150 | // ------------------------------------- | |
2151 | ||
2152 | void | |
2153 | Calendar::adoptTimeZone(TimeZone* zone) | |
2154 | { | |
2155 | // Do nothing if passed-in zone is NULL | |
2156 | if (zone == NULL) return; | |
2157 | ||
2158 | // fZone should always be non-null | |
2159 | if (fZone != NULL) delete fZone; | |
2160 | fZone = zone; | |
2161 | ||
2162 | // if the zone changes, we need to recompute the time fields | |
2163 | fAreFieldsSet = FALSE; | |
2164 | } | |
2165 | ||
2166 | // ------------------------------------- | |
2167 | void | |
2168 | Calendar::setTimeZone(const TimeZone& zone) | |
2169 | { | |
2170 | adoptTimeZone(zone.clone()); | |
2171 | } | |
2172 | ||
2173 | // ------------------------------------- | |
2174 | ||
2175 | const TimeZone& | |
2176 | Calendar::getTimeZone() const | |
2177 | { | |
2178 | return *fZone; | |
2179 | } | |
2180 | ||
2181 | // ------------------------------------- | |
2182 | ||
2183 | TimeZone* | |
2184 | Calendar::orphanTimeZone() | |
2185 | { | |
2186 | TimeZone *z = fZone; | |
2187 | // we let go of the time zone; the new time zone is the system default time zone | |
2188 | fZone = TimeZone::createDefault(); | |
2189 | return z; | |
2190 | } | |
2191 | ||
2192 | // ------------------------------------- | |
2193 | ||
2194 | void | |
2195 | Calendar::setLenient(UBool lenient) | |
2196 | { | |
2197 | fLenient = lenient; | |
2198 | } | |
2199 | ||
2200 | // ------------------------------------- | |
2201 | ||
2202 | UBool | |
2203 | Calendar::isLenient() const | |
2204 | { | |
2205 | return fLenient; | |
2206 | } | |
2207 | ||
2208 | // ------------------------------------- | |
2209 | ||
4388f060 A |
2210 | void |
2211 | Calendar::setRepeatedWallTimeOption(UCalendarWallTimeOption option) | |
2212 | { | |
2213 | if (option == UCAL_WALLTIME_LAST || option == UCAL_WALLTIME_FIRST) { | |
2214 | fRepeatedWallTime = option; | |
2215 | } | |
2216 | } | |
2217 | ||
2218 | // ------------------------------------- | |
2219 | ||
2220 | UCalendarWallTimeOption | |
2221 | Calendar::getRepeatedWallTimeOption(void) const | |
2222 | { | |
2223 | return fRepeatedWallTime; | |
2224 | } | |
2225 | ||
2226 | // ------------------------------------- | |
2227 | ||
2228 | void | |
2229 | Calendar::setSkippedWallTimeOption(UCalendarWallTimeOption option) | |
2230 | { | |
2231 | fSkippedWallTime = option; | |
2232 | } | |
2233 | ||
2234 | // ------------------------------------- | |
2235 | ||
2236 | UCalendarWallTimeOption | |
2237 | Calendar::getSkippedWallTimeOption(void) const | |
2238 | { | |
2239 | return fSkippedWallTime; | |
2240 | } | |
2241 | ||
2242 | // ------------------------------------- | |
2243 | ||
b75a7d8f A |
2244 | void |
2245 | Calendar::setFirstDayOfWeek(UCalendarDaysOfWeek value) | |
2246 | { | |
46f4442e | 2247 | if (fFirstDayOfWeek != value && |
b75a7d8f | 2248 | value >= UCAL_SUNDAY && value <= UCAL_SATURDAY) { |
46f4442e A |
2249 | fFirstDayOfWeek = value; |
2250 | fAreFieldsSet = FALSE; | |
2251 | } | |
b75a7d8f A |
2252 | } |
2253 | ||
2254 | // ------------------------------------- | |
2255 | ||
2256 | Calendar::EDaysOfWeek | |
2257 | Calendar::getFirstDayOfWeek() const | |
2258 | { | |
2259 | return (Calendar::EDaysOfWeek)fFirstDayOfWeek; | |
2260 | } | |
2261 | ||
2262 | UCalendarDaysOfWeek | |
2263 | Calendar::getFirstDayOfWeek(UErrorCode & /*status*/) const | |
2264 | { | |
2265 | return fFirstDayOfWeek; | |
2266 | } | |
2267 | // ------------------------------------- | |
2268 | ||
2269 | void | |
2270 | Calendar::setMinimalDaysInFirstWeek(uint8_t value) | |
2271 | { | |
2272 | // Values less than 1 have the same effect as 1; values greater | |
2273 | // than 7 have the same effect as 7. However, we normalize values | |
2274 | // so operator== and so forth work. | |
2275 | if (value < 1) { | |
2276 | value = 1; | |
2277 | } else if (value > 7) { | |
2278 | value = 7; | |
2279 | } | |
2280 | if (fMinimalDaysInFirstWeek != value) { | |
2281 | fMinimalDaysInFirstWeek = value; | |
2282 | fAreFieldsSet = FALSE; | |
2283 | } | |
2284 | } | |
2285 | ||
2286 | // ------------------------------------- | |
2287 | ||
2288 | uint8_t | |
2289 | Calendar::getMinimalDaysInFirstWeek() const | |
2290 | { | |
2291 | return fMinimalDaysInFirstWeek; | |
2292 | } | |
2293 | ||
729e4ab9 A |
2294 | // ------------------------------------- |
2295 | // weekend functions, just dummy implementations for now (for API freeze) | |
2296 | ||
2297 | UCalendarWeekdayType | |
2298 | Calendar::getDayOfWeekType(UCalendarDaysOfWeek dayOfWeek, UErrorCode &status) const | |
2299 | { | |
2300 | if (U_FAILURE(status)) { | |
2301 | return UCAL_WEEKDAY; | |
2302 | } | |
2303 | if (dayOfWeek < UCAL_SUNDAY || dayOfWeek > UCAL_SATURDAY) { | |
2304 | status = U_ILLEGAL_ARGUMENT_ERROR; | |
2305 | return UCAL_WEEKDAY; | |
2306 | } | |
51004dcb A |
2307 | if (fWeekendOnset == fWeekendCease) { |
2308 | if (dayOfWeek != fWeekendOnset) | |
2309 | return UCAL_WEEKDAY; | |
2310 | return (fWeekendOnsetMillis == 0) ? UCAL_WEEKEND : UCAL_WEEKEND_ONSET; | |
2311 | } | |
729e4ab9 A |
2312 | if (fWeekendOnset < fWeekendCease) { |
2313 | if (dayOfWeek < fWeekendOnset || dayOfWeek > fWeekendCease) { | |
2314 | return UCAL_WEEKDAY; | |
2315 | } | |
2316 | } else { | |
2317 | if (dayOfWeek > fWeekendCease && dayOfWeek < fWeekendOnset) { | |
2318 | return UCAL_WEEKDAY; | |
2319 | } | |
2320 | } | |
2321 | if (dayOfWeek == fWeekendOnset) { | |
2322 | return (fWeekendOnsetMillis == 0) ? UCAL_WEEKEND : UCAL_WEEKEND_ONSET; | |
2323 | } | |
2324 | if (dayOfWeek == fWeekendCease) { | |
51004dcb | 2325 | return (fWeekendCeaseMillis >= 86400000) ? UCAL_WEEKEND : UCAL_WEEKEND_CEASE; |
729e4ab9 A |
2326 | } |
2327 | return UCAL_WEEKEND; | |
2328 | } | |
2329 | ||
2330 | int32_t | |
2331 | Calendar::getWeekendTransition(UCalendarDaysOfWeek dayOfWeek, UErrorCode &status) const | |
2332 | { | |
2333 | if (U_FAILURE(status)) { | |
2334 | return 0; | |
2335 | } | |
2336 | if (dayOfWeek == fWeekendOnset) { | |
2337 | return fWeekendOnsetMillis; | |
2338 | } else if (dayOfWeek == fWeekendCease) { | |
2339 | return fWeekendCeaseMillis; | |
2340 | } | |
2341 | status = U_ILLEGAL_ARGUMENT_ERROR; | |
2342 | return 0; | |
2343 | } | |
2344 | ||
2345 | UBool | |
2346 | Calendar::isWeekend(UDate date, UErrorCode &status) const | |
2347 | { | |
2348 | if (U_FAILURE(status)) { | |
2349 | return FALSE; | |
2350 | } | |
2351 | // clone the calendar so we don't mess with the real one. | |
2352 | Calendar *work = (Calendar*)this->clone(); | |
2353 | if (work == NULL) { | |
2354 | status = U_MEMORY_ALLOCATION_ERROR; | |
2355 | return FALSE; | |
2356 | } | |
2357 | UBool result = FALSE; | |
2358 | work->setTime(date, status); | |
2359 | if (U_SUCCESS(status)) { | |
2360 | result = work->isWeekend(); | |
2361 | } | |
2362 | delete work; | |
2363 | return result; | |
2364 | } | |
2365 | ||
2366 | UBool | |
2367 | Calendar::isWeekend(void) const | |
2368 | { | |
2369 | UErrorCode status = U_ZERO_ERROR; | |
2370 | UCalendarDaysOfWeek dayOfWeek = (UCalendarDaysOfWeek)get(UCAL_DAY_OF_WEEK, status); | |
2371 | UCalendarWeekdayType dayType = getDayOfWeekType(dayOfWeek, status); | |
2372 | if (U_SUCCESS(status)) { | |
2373 | switch (dayType) { | |
2374 | case UCAL_WEEKDAY: | |
2375 | return FALSE; | |
2376 | case UCAL_WEEKEND: | |
2377 | return TRUE; | |
2378 | case UCAL_WEEKEND_ONSET: | |
2379 | case UCAL_WEEKEND_CEASE: | |
2380 | // Use internalGet() because the above call to get() populated all fields. | |
2381 | { | |
2382 | int32_t millisInDay = internalGet(UCAL_MILLISECONDS_IN_DAY); | |
2383 | int32_t transitionMillis = getWeekendTransition(dayOfWeek, status); | |
2384 | if (U_SUCCESS(status)) { | |
2385 | return (dayType == UCAL_WEEKEND_ONSET)? | |
2386 | (millisInDay >= transitionMillis): | |
2387 | (millisInDay < transitionMillis); | |
2388 | } | |
2389 | // else fall through, return FALSE | |
2390 | } | |
2391 | default: | |
2392 | break; | |
2393 | } | |
2394 | } | |
2395 | return FALSE; | |
2396 | } | |
2397 | ||
374ca955 A |
2398 | // ------------------------------------- limits |
2399 | ||
2400 | int32_t | |
2401 | Calendar::getMinimum(EDateFields field) const { | |
2402 | return getLimit((UCalendarDateFields) field,UCAL_LIMIT_MINIMUM); | |
2403 | } | |
2404 | ||
2405 | int32_t | |
2406 | Calendar::getMinimum(UCalendarDateFields field) const | |
2407 | { | |
2408 | return getLimit(field,UCAL_LIMIT_MINIMUM); | |
2409 | } | |
2410 | ||
2411 | // ------------------------------------- | |
2412 | int32_t | |
2413 | Calendar::getMaximum(EDateFields field) const | |
2414 | { | |
2415 | return getLimit((UCalendarDateFields) field,UCAL_LIMIT_MAXIMUM); | |
2416 | } | |
2417 | ||
2418 | int32_t | |
2419 | Calendar::getMaximum(UCalendarDateFields field) const | |
2420 | { | |
2421 | return getLimit(field,UCAL_LIMIT_MAXIMUM); | |
2422 | } | |
2423 | ||
b75a7d8f | 2424 | // ------------------------------------- |
374ca955 A |
2425 | int32_t |
2426 | Calendar::getGreatestMinimum(EDateFields field) const | |
2427 | { | |
2428 | return getLimit((UCalendarDateFields)field,UCAL_LIMIT_GREATEST_MINIMUM); | |
2429 | } | |
2430 | ||
2431 | int32_t | |
2432 | Calendar::getGreatestMinimum(UCalendarDateFields field) const | |
2433 | { | |
2434 | return getLimit(field,UCAL_LIMIT_GREATEST_MINIMUM); | |
2435 | } | |
2436 | ||
2437 | // ------------------------------------- | |
2438 | int32_t | |
2439 | Calendar::getLeastMaximum(EDateFields field) const | |
2440 | { | |
2441 | return getLimit((UCalendarDateFields) field,UCAL_LIMIT_LEAST_MAXIMUM); | |
2442 | } | |
2443 | ||
2444 | int32_t | |
2445 | Calendar::getLeastMaximum(UCalendarDateFields field) const | |
2446 | { | |
2447 | return getLimit( field,UCAL_LIMIT_LEAST_MAXIMUM); | |
2448 | } | |
2449 | ||
2450 | // ------------------------------------- | |
2451 | int32_t | |
2452 | Calendar::getActualMinimum(EDateFields field, UErrorCode& status) const | |
2453 | { | |
2454 | return getActualMinimum((UCalendarDateFields) field, status); | |
2455 | } | |
2456 | ||
2457 | int32_t Calendar::getLimit(UCalendarDateFields field, ELimitType limitType) const { | |
2458 | switch (field) { | |
2459 | case UCAL_DAY_OF_WEEK: | |
2460 | case UCAL_AM_PM: | |
2461 | case UCAL_HOUR: | |
2462 | case UCAL_HOUR_OF_DAY: | |
2463 | case UCAL_MINUTE: | |
2464 | case UCAL_SECOND: | |
2465 | case UCAL_MILLISECOND: | |
2466 | case UCAL_ZONE_OFFSET: | |
2467 | case UCAL_DST_OFFSET: | |
2468 | case UCAL_DOW_LOCAL: | |
2469 | case UCAL_JULIAN_DAY: | |
2470 | case UCAL_MILLISECONDS_IN_DAY: | |
46f4442e | 2471 | case UCAL_IS_LEAP_MONTH: |
374ca955 | 2472 | return kCalendarLimits[field][limitType]; |
46f4442e A |
2473 | |
2474 | case UCAL_WEEK_OF_MONTH: | |
2475 | { | |
2476 | int32_t limit; | |
2477 | if (limitType == UCAL_LIMIT_MINIMUM) { | |
2478 | limit = getMinimalDaysInFirstWeek() == 1 ? 1 : 0; | |
2479 | } else if (limitType == UCAL_LIMIT_GREATEST_MINIMUM) { | |
2480 | limit = 1; | |
2481 | } else { | |
2482 | int32_t minDaysInFirst = getMinimalDaysInFirstWeek(); | |
2483 | int32_t daysInMonth = handleGetLimit(UCAL_DAY_OF_MONTH, limitType); | |
2484 | if (limitType == UCAL_LIMIT_LEAST_MAXIMUM) { | |
2485 | limit = (daysInMonth + (7 - minDaysInFirst)) / 7; | |
2486 | } else { // limitType == UCAL_LIMIT_MAXIMUM | |
2487 | limit = (daysInMonth + 6 + (7 - minDaysInFirst)) / 7; | |
2488 | } | |
2489 | } | |
2490 | return limit; | |
2491 | } | |
374ca955 A |
2492 | default: |
2493 | return handleGetLimit(field, limitType); | |
2494 | } | |
2495 | } | |
2496 | ||
b75a7d8f A |
2497 | |
2498 | int32_t | |
2499 | Calendar::getActualMinimum(UCalendarDateFields field, UErrorCode& status) const | |
2500 | { | |
2501 | int32_t fieldValue = getGreatestMinimum(field); | |
2502 | int32_t endValue = getMinimum(field); | |
2503 | ||
2504 | // if we know that the minimum value is always the same, just return it | |
2505 | if (fieldValue == endValue) { | |
2506 | return fieldValue; | |
2507 | } | |
2508 | ||
2509 | // clone the calendar so we don't mess with the real one, and set it to | |
2510 | // accept anything for the field values | |
2511 | Calendar *work = (Calendar*)this->clone(); | |
46f4442e A |
2512 | if (work == NULL) { |
2513 | status = U_MEMORY_ALLOCATION_ERROR; | |
2514 | return 0; | |
2515 | } | |
b75a7d8f A |
2516 | work->setLenient(TRUE); |
2517 | ||
2518 | // now try each value from getLeastMaximum() to getMaximum() one by one until | |
2519 | // we get a value that normalizes to another value. The last value that | |
2520 | // normalizes to itself is the actual minimum for the current date | |
2521 | int32_t result = fieldValue; | |
2522 | ||
2523 | do { | |
2524 | work->set(field, fieldValue); | |
2525 | if (work->get(field, status) != fieldValue) { | |
2526 | break; | |
2527 | } | |
2528 | else { | |
2529 | result = fieldValue; | |
2530 | fieldValue--; | |
2531 | } | |
2532 | } while (fieldValue >= endValue); | |
2533 | ||
2534 | delete work; | |
2535 | ||
2536 | /* Test for buffer overflows */ | |
2537 | if(U_FAILURE(status)) { | |
2538 | return 0; | |
2539 | } | |
2540 | return result; | |
2541 | } | |
2542 | ||
2543 | // ------------------------------------- | |
2544 | ||
374ca955 A |
2545 | |
2546 | ||
2547 | /** | |
46f4442e A |
2548 | * Ensure that each field is within its valid range by calling {@link |
2549 | * #validateField(int)} on each field that has been set. This method | |
2550 | * should only be called if this calendar is not lenient. | |
2551 | * @see #isLenient | |
2552 | * @see #validateField(int) | |
2553 | */ | |
374ca955 | 2554 | void Calendar::validateFields(UErrorCode &status) { |
46f4442e | 2555 | for (int32_t field = 0; U_SUCCESS(status) && (field < UCAL_FIELD_COUNT); field++) { |
4388f060 | 2556 | if (fStamp[field] >= kMinimumUserStamp) { |
46f4442e A |
2557 | validateField((UCalendarDateFields)field, status); |
2558 | } | |
374ca955 | 2559 | } |
374ca955 A |
2560 | } |
2561 | ||
2562 | /** | |
46f4442e A |
2563 | * Validate a single field of this calendar. Subclasses should |
2564 | * override this method to validate any calendar-specific fields. | |
2565 | * Generic fields can be handled by | |
2566 | * <code>Calendar.validateField()</code>. | |
2567 | * @see #validateField(int, int, int) | |
2568 | */ | |
374ca955 | 2569 | void Calendar::validateField(UCalendarDateFields field, UErrorCode &status) { |
46f4442e A |
2570 | int32_t y; |
2571 | switch (field) { | |
2572 | case UCAL_DAY_OF_MONTH: | |
2573 | y = handleGetExtendedYear(); | |
2574 | validateField(field, 1, handleGetMonthLength(y, internalGet(UCAL_MONTH)), status); | |
2575 | break; | |
2576 | case UCAL_DAY_OF_YEAR: | |
2577 | y = handleGetExtendedYear(); | |
2578 | validateField(field, 1, handleGetYearLength(y), status); | |
2579 | break; | |
2580 | case UCAL_DAY_OF_WEEK_IN_MONTH: | |
2581 | if (internalGet(field) == 0) { | |
374ca955 | 2582 | #if defined (U_DEBUG_CAL) |
46f4442e A |
2583 | fprintf(stderr, "%s:%d: ILLEGAL ARG because DOW in month cannot be 0\n", |
2584 | __FILE__, __LINE__); | |
374ca955 | 2585 | #endif |
46f4442e A |
2586 | status = U_ILLEGAL_ARGUMENT_ERROR; // "DAY_OF_WEEK_IN_MONTH cannot be zero" |
2587 | return; | |
2588 | } | |
2589 | validateField(field, getMinimum(field), getMaximum(field), status); | |
2590 | break; | |
2591 | default: | |
2592 | validateField(field, getMinimum(field), getMaximum(field), status); | |
2593 | break; | |
374ca955 | 2594 | } |
374ca955 A |
2595 | } |
2596 | ||
2597 | /** | |
46f4442e A |
2598 | * Validate a single field of this calendar given its minimum and |
2599 | * maximum allowed value. If the field is out of range, throw a | |
2600 | * descriptive <code>IllegalArgumentException</code>. Subclasses may | |
2601 | * use this method in their implementation of {@link | |
2602 | * #validateField(int)}. | |
2603 | */ | |
374ca955 A |
2604 | void Calendar::validateField(UCalendarDateFields field, int32_t min, int32_t max, UErrorCode& status) |
2605 | { | |
46f4442e A |
2606 | int32_t value = fFields[field]; |
2607 | if (value < min || value > max) { | |
374ca955 | 2608 | #if defined (U_DEBUG_CAL) |
46f4442e A |
2609 | fprintf(stderr, "%s:%d: ILLEGAL ARG because of field %s out of range %d..%d at %d\n", |
2610 | __FILE__, __LINE__,fldName(field),min,max,value); | |
374ca955 | 2611 | #endif |
46f4442e A |
2612 | status = U_ILLEGAL_ARGUMENT_ERROR; |
2613 | return; | |
2614 | } | |
374ca955 A |
2615 | } |
2616 | ||
2617 | // ------------------------- | |
2618 | ||
2619 | const UFieldResolutionTable* Calendar::getFieldResolutionTable() const { | |
46f4442e | 2620 | return kDatePrecedence; |
374ca955 A |
2621 | } |
2622 | ||
2623 | ||
2624 | UCalendarDateFields Calendar::newerField(UCalendarDateFields defaultField, UCalendarDateFields alternateField) const | |
2625 | { | |
46f4442e A |
2626 | if (fStamp[alternateField] > fStamp[defaultField]) { |
2627 | return alternateField; | |
2628 | } | |
2629 | return defaultField; | |
374ca955 A |
2630 | } |
2631 | ||
2632 | UCalendarDateFields Calendar::resolveFields(const UFieldResolutionTable* precedenceTable) { | |
46f4442e | 2633 | int32_t bestField = UCAL_FIELD_COUNT; |
51004dcb A |
2634 | int32_t tempBestField; |
2635 | UBool restoreWeekOfInternalSet = FALSE; | |
2636 | if (fStamp[UCAL_DAY_OF_WEEK] >= kMinimumUserStamp && | |
2637 | fStamp[UCAL_DATE] >= kMinimumUserStamp && | |
2638 | fStamp[UCAL_MONTH] >= kMinimumUserStamp && | |
2639 | fStamp[UCAL_WEEK_OF_YEAR] == kInternallySet && | |
2640 | fStamp[UCAL_WEEK_OF_MONTH] == kInternallySet && | |
2641 | fStamp[UCAL_DAY_OF_WEEK_IN_MONTH] == kInternallySet) { | |
2642 | int32_t monthStampDelta = fStamp[UCAL_DAY_OF_WEEK] - fStamp[UCAL_MONTH]; | |
2643 | int32_t dateStampDelta = fStamp[UCAL_DAY_OF_WEEK] - fStamp[UCAL_DATE]; | |
2644 | if ( monthStampDelta >= 1 && monthStampDelta <= 3 && dateStampDelta >= 1 && dateStampDelta <= 3 ) { | |
2645 | // If UCAL_MONTH, UCAL_DATE and UCAL_DAY_OF_WEEK are all explicitly set nearly one after the | |
2646 | // other (as when parsing a single date format), with UCAL_DAY_OF_WEEK set most recently, and | |
2647 | // if UCAL_WEEK_OF_YEAR, UCAL_WEEK_OF_MONTH, and UCAL_DAY_OF_WEEK_IN_MONTH are all only | |
2648 | // implicitly set (as from setTimeInMillis), then for the calculations in this call temporarily | |
2649 | // treat UCAL_WEEK_OF_YEAR, UCAL_WEEK_OF_MONTH, and UCAL_DAY_OF_WEEK_IN_MONTH as unset so they | |
2650 | // don't combine with UCAL_DAY_OF_WEEK to override the date in UCAL_MONTH & UCAL_DATE. All of | |
2651 | // these conditions are to avoid messing up the case of parsing a format with UCAL_DAY_OF_WEEK | |
2652 | // alone or in combination with other fields besides UCAL_MONTH, UCAL_DATE. Note: the current | |
2653 | // stamp value is incremented each time Calendar::set is called to explicitly set a field value. | |
2654 | fStamp[UCAL_WEEK_OF_YEAR] = kUnset; | |
2655 | fStamp[UCAL_WEEK_OF_MONTH] = kUnset; | |
2656 | fStamp[UCAL_DAY_OF_WEEK_IN_MONTH] = kUnset; | |
2657 | restoreWeekOfInternalSet = TRUE; | |
2658 | } | |
2659 | } | |
46f4442e A |
2660 | for (int32_t g=0; precedenceTable[g][0][0] != -1 && (bestField == UCAL_FIELD_COUNT); ++g) { |
2661 | int32_t bestStamp = kUnset; | |
2662 | for (int32_t l=0; precedenceTable[g][l][0] != -1; ++l) { | |
2663 | int32_t lineStamp = kUnset; | |
2664 | // Skip over first entry if it is negative | |
2665 | for (int32_t i=((precedenceTable[g][l][0]>=kResolveRemap)?1:0); precedenceTable[g][l][i]!=-1; ++i) { | |
4388f060 | 2666 | U_ASSERT(precedenceTable[g][l][i] < UCAL_FIELD_COUNT); |
46f4442e A |
2667 | int32_t s = fStamp[precedenceTable[g][l][i]]; |
2668 | // If any field is unset then don't use this line | |
2669 | if (s == kUnset) { | |
2670 | goto linesInGroup; | |
2671 | } else if(s > lineStamp) { | |
2672 | lineStamp = s; | |
2673 | } | |
2674 | } | |
2675 | // Record new maximum stamp & field no. | |
2676 | if (lineStamp > bestStamp) { | |
51004dcb A |
2677 | tempBestField = precedenceTable[g][l][0]; // First field refers to entire line |
2678 | if (tempBestField >= kResolveRemap) { | |
2679 | tempBestField &= (kResolveRemap-1); | |
2680 | // This check is needed to resolve some issues with UCAL_YEAR precedence mapping | |
2681 | if (tempBestField != UCAL_DATE || (fStamp[UCAL_WEEK_OF_MONTH] < fStamp[tempBestField])) { | |
2682 | bestField = tempBestField; | |
2683 | } | |
2684 | } else { | |
2685 | bestField = tempBestField; | |
2686 | } | |
2687 | ||
2688 | if (bestField == tempBestField) { | |
2689 | bestStamp = lineStamp; | |
2690 | } | |
46f4442e A |
2691 | } |
2692 | linesInGroup: | |
2693 | ; | |
374ca955 | 2694 | } |
374ca955 | 2695 | } |
51004dcb A |
2696 | if (restoreWeekOfInternalSet) { |
2697 | // Restore the field stamps temporarily unset above. | |
2698 | fStamp[UCAL_WEEK_OF_YEAR] = kInternallySet; | |
2699 | fStamp[UCAL_WEEK_OF_MONTH] = kInternallySet; | |
2700 | fStamp[UCAL_DAY_OF_WEEK_IN_MONTH] = kInternallySet; | |
2701 | } | |
2702 | return (UCalendarDateFields)bestField; | |
374ca955 A |
2703 | } |
2704 | ||
2705 | const UFieldResolutionTable Calendar::kDatePrecedence[] = | |
46f4442e | 2706 | { |
374ca955 | 2707 | { |
46f4442e A |
2708 | { UCAL_DAY_OF_MONTH, kResolveSTOP }, |
2709 | { UCAL_WEEK_OF_YEAR, UCAL_DAY_OF_WEEK, kResolveSTOP }, | |
2710 | { UCAL_WEEK_OF_MONTH, UCAL_DAY_OF_WEEK, kResolveSTOP }, | |
2711 | { UCAL_DAY_OF_WEEK_IN_MONTH, UCAL_DAY_OF_WEEK, kResolveSTOP }, | |
2712 | { UCAL_WEEK_OF_YEAR, UCAL_DOW_LOCAL, kResolveSTOP }, | |
2713 | { UCAL_WEEK_OF_MONTH, UCAL_DOW_LOCAL, kResolveSTOP }, | |
2714 | { UCAL_DAY_OF_WEEK_IN_MONTH, UCAL_DOW_LOCAL, kResolveSTOP }, | |
2715 | { UCAL_DAY_OF_YEAR, kResolveSTOP }, | |
2716 | { kResolveRemap | UCAL_DAY_OF_MONTH, UCAL_YEAR, kResolveSTOP }, // if YEAR is set over YEAR_WOY use DAY_OF_MONTH | |
2717 | { kResolveRemap | UCAL_WEEK_OF_YEAR, UCAL_YEAR_WOY, kResolveSTOP }, // if YEAR_WOY is set, calc based on WEEK_OF_YEAR | |
2718 | { kResolveSTOP } | |
374ca955 A |
2719 | }, |
2720 | { | |
46f4442e A |
2721 | { UCAL_WEEK_OF_YEAR, kResolveSTOP }, |
2722 | { UCAL_WEEK_OF_MONTH, kResolveSTOP }, | |
2723 | { UCAL_DAY_OF_WEEK_IN_MONTH, kResolveSTOP }, | |
2724 | { kResolveRemap | UCAL_DAY_OF_WEEK_IN_MONTH, UCAL_DAY_OF_WEEK, kResolveSTOP }, | |
2725 | { kResolveRemap | UCAL_DAY_OF_WEEK_IN_MONTH, UCAL_DOW_LOCAL, kResolveSTOP }, | |
2726 | { kResolveSTOP } | |
374ca955 A |
2727 | }, |
2728 | {{kResolveSTOP}} | |
46f4442e | 2729 | }; |
374ca955 A |
2730 | |
2731 | ||
2732 | const UFieldResolutionTable Calendar::kDOWPrecedence[] = | |
2733 | { | |
46f4442e A |
2734 | { |
2735 | { UCAL_DAY_OF_WEEK,kResolveSTOP, kResolveSTOP }, | |
2736 | { UCAL_DOW_LOCAL,kResolveSTOP, kResolveSTOP }, | |
2737 | {kResolveSTOP} | |
2738 | }, | |
2739 | {{kResolveSTOP}} | |
374ca955 A |
2740 | }; |
2741 | ||
2742 | // precedence for calculating a year | |
2743 | const UFieldResolutionTable Calendar::kYearPrecedence[] = | |
2744 | { | |
46f4442e A |
2745 | { |
2746 | { UCAL_YEAR, kResolveSTOP }, | |
2747 | { UCAL_EXTENDED_YEAR, kResolveSTOP }, | |
2748 | { UCAL_YEAR_WOY, UCAL_WEEK_OF_YEAR, kResolveSTOP }, // YEAR_WOY is useless without WEEK_OF_YEAR | |
2749 | { kResolveSTOP } | |
2750 | }, | |
2751 | {{kResolveSTOP}} | |
374ca955 A |
2752 | }; |
2753 | ||
2754 | ||
2755 | // ------------------------- | |
2756 | ||
2757 | ||
2758 | void Calendar::computeTime(UErrorCode& status) { | |
46f4442e A |
2759 | if (!isLenient()) { |
2760 | validateFields(status); | |
2761 | if (U_FAILURE(status)) { | |
2762 | return; | |
2763 | } | |
2764 | } | |
374ca955 | 2765 | |
46f4442e A |
2766 | // Compute the Julian day |
2767 | int32_t julianDay = computeJulianDay(); | |
374ca955 | 2768 | |
46f4442e | 2769 | double millis = Grego::julianDayToMillis(julianDay); |
374ca955 A |
2770 | |
2771 | #if defined (U_DEBUG_CAL) | |
729e4ab9 | 2772 | // int32_t julianInsanityCheck = (int32_t)ClockMath::floorDivide(millis, kOneDay); |
46f4442e A |
2773 | // julianInsanityCheck += kEpochStartAsJulianDay; |
2774 | // if(1 || julianInsanityCheck != julianDay) { | |
2775 | // fprintf(stderr, "%s:%d- D'oh- computed jules %d, to mills (%s)%.lf, recomputed %d\n", | |
2776 | // __FILE__, __LINE__, julianDay, millis<0.0?"NEG":"", millis, julianInsanityCheck); | |
2777 | // } | |
374ca955 A |
2778 | #endif |
2779 | ||
46f4442e A |
2780 | int32_t millisInDay; |
2781 | ||
2782 | // We only use MILLISECONDS_IN_DAY if it has been set by the user. | |
2783 | // This makes it possible for the caller to set the calendar to a | |
2784 | // time and call clear(MONTH) to reset the MONTH to January. This | |
2785 | // is legacy behavior. Without this, clear(MONTH) has no effect, | |
2786 | // since the internally set JULIAN_DAY is used. | |
2787 | if (fStamp[UCAL_MILLISECONDS_IN_DAY] >= ((int32_t)kMinimumUserStamp) && | |
4388f060 A |
2788 | newestStamp(UCAL_AM_PM, UCAL_MILLISECOND, kUnset) <= fStamp[UCAL_MILLISECONDS_IN_DAY]) { |
2789 | millisInDay = internalGet(UCAL_MILLISECONDS_IN_DAY); | |
2790 | } else { | |
2791 | millisInDay = computeMillisInDay(); | |
2792 | } | |
46f4442e | 2793 | |
4388f060 A |
2794 | UDate t = 0; |
2795 | if (fStamp[UCAL_ZONE_OFFSET] >= ((int32_t)kMinimumUserStamp) || fStamp[UCAL_DST_OFFSET] >= ((int32_t)kMinimumUserStamp)) { | |
2796 | t = millis + millisInDay - (internalGet(UCAL_ZONE_OFFSET) + internalGet(UCAL_DST_OFFSET)); | |
2797 | } else { | |
46f4442e A |
2798 | // Compute the time zone offset and DST offset. There are two potential |
2799 | // ambiguities here. We'll assume a 2:00 am (wall time) switchover time | |
2800 | // for discussion purposes here. | |
4388f060 A |
2801 | // |
2802 | // 1. The positive offset change such as transition into DST. | |
2803 | // Here, a designated time of 2:00 am - 2:59 am does not actually exist. | |
2804 | // For this case, skippedWallTime option specifies the behavior. | |
2805 | // For example, 2:30 am is interpreted as; | |
2806 | // - WALLTIME_LAST(default): 3:30 am (DST) (interpreting 2:30 am as 31 minutes after 1:59 am (STD)) | |
2807 | // - WALLTIME_FIRST: 1:30 am (STD) (interpreting 2:30 am as 30 minutes before 3:00 am (DST)) | |
2808 | // - WALLTIME_NEXT_VALID: 3:00 am (DST) (next valid time after 2:30 am on a wall clock) | |
2809 | // 2. The negative offset change such as transition out of DST. | |
2810 | // Here, a designated time of 1:00 am - 1:59 am can be in standard or DST. Both are valid | |
2811 | // representations (the rep jumps from 1:59:59 DST to 1:00:00 Std). | |
2812 | // For this case, repeatedWallTime option specifies the behavior. | |
2813 | // For example, 1:30 am is interpreted as; | |
2814 | // - WALLTIME_LAST(default): 1:30 am (STD) - latter occurrence | |
2815 | // - WALLTIME_FIRST: 1:30 am (DST) - former occurrence | |
2816 | // | |
2817 | // In addition to above, when calendar is strict (not default), wall time falls into | |
2818 | // the skipped time range will be processed as an error case. | |
2819 | // | |
2820 | // These special cases are mostly handled in #computeZoneOffset(long), except WALLTIME_NEXT_VALID | |
2821 | // at positive offset change. The protected method computeZoneOffset(long) is exposed to Calendar | |
2822 | // subclass implementations and marked as @stable. Strictly speaking, WALLTIME_NEXT_VALID | |
2823 | // should be also handled in the same place, but we cannot change the code flow without deprecating | |
2824 | // the protected method. | |
2825 | // | |
46f4442e A |
2826 | // We use the TimeZone object, unless the user has explicitly set the ZONE_OFFSET |
2827 | // or DST_OFFSET fields; then we use those fields. | |
46f4442e | 2828 | |
4388f060 A |
2829 | if (!isLenient() || fSkippedWallTime == UCAL_WALLTIME_NEXT_VALID) { |
2830 | // When strict, invalidate a wall time falls into a skipped wall time range. | |
2831 | // When lenient and skipped wall time option is WALLTIME_NEXT_VALID, | |
2832 | // the result time will be adjusted to the next valid time (on wall clock). | |
2833 | int32_t zoneOffset = computeZoneOffset(millis, millisInDay, status); | |
2834 | UDate tmpTime = millis + millisInDay - zoneOffset; | |
2835 | ||
2836 | int32_t raw, dst; | |
2837 | fZone->getOffset(tmpTime, FALSE, raw, dst, status); | |
2838 | ||
2839 | if (U_SUCCESS(status)) { | |
2840 | // zoneOffset != (raw + dst) only when the given wall time fall into | |
2841 | // a skipped wall time range caused by positive zone offset transition. | |
2842 | if (zoneOffset != (raw + dst)) { | |
2843 | if (!isLenient()) { | |
2844 | status = U_ILLEGAL_ARGUMENT_ERROR; | |
2845 | } else { | |
2846 | U_ASSERT(fSkippedWallTime == UCAL_WALLTIME_NEXT_VALID); | |
2847 | // Adjust time to the next valid wall clock time. | |
2848 | // At this point, tmpTime is on or after the zone offset transition causing | |
2849 | // the skipped time range. | |
2850 | ||
2851 | BasicTimeZone *btz = getBasicTimeZone(); | |
2852 | if (btz) { | |
2853 | TimeZoneTransition transition; | |
2854 | UBool hasTransition = btz->getPreviousTransition(tmpTime, TRUE, transition); | |
2855 | if (hasTransition) { | |
2856 | t = transition.getTime(); | |
2857 | } else { | |
2858 | // Could not find any transitions. | |
2859 | // Note: This should never happen. | |
2860 | status = U_INTERNAL_PROGRAM_ERROR; | |
2861 | } | |
2862 | } else { | |
2863 | // If not BasicTimeZone, return unsupported error for now. | |
2864 | // TODO: We may support non-BasicTimeZone in future. | |
2865 | status = U_UNSUPPORTED_ERROR; | |
2866 | } | |
2867 | } | |
2868 | } else { | |
2869 | t = tmpTime; | |
2870 | } | |
2871 | } | |
2872 | } else { | |
2873 | t = millis + millisInDay - computeZoneOffset(millis, millisInDay, status); | |
2874 | } | |
2875 | } | |
2876 | if (U_SUCCESS(status)) { | |
2877 | internalSetTime(t); | |
2878 | } | |
374ca955 A |
2879 | } |
2880 | ||
2881 | /** | |
46f4442e A |
2882 | * Compute the milliseconds in the day from the fields. This is a |
2883 | * value from 0 to 23:59:59.999 inclusive, unless fields are out of | |
2884 | * range, in which case it can be an arbitrary value. This value | |
2885 | * reflects local zone wall time. | |
2886 | * @stable ICU 2.0 | |
2887 | */ | |
374ca955 A |
2888 | int32_t Calendar::computeMillisInDay() { |
2889 | // Do the time portion of the conversion. | |
46f4442e A |
2890 | |
2891 | int32_t millisInDay = 0; | |
2892 | ||
2893 | // Find the best set of fields specifying the time of day. There | |
2894 | // are only two possibilities here; the HOUR_OF_DAY or the | |
2895 | // AM_PM and the HOUR. | |
2896 | int32_t hourOfDayStamp = fStamp[UCAL_HOUR_OF_DAY]; | |
2897 | int32_t hourStamp = (fStamp[UCAL_HOUR] > fStamp[UCAL_AM_PM])?fStamp[UCAL_HOUR]:fStamp[UCAL_AM_PM]; | |
2898 | int32_t bestStamp = (hourStamp > hourOfDayStamp) ? hourStamp : hourOfDayStamp; | |
2899 | ||
2900 | // Hours | |
2901 | if (bestStamp != kUnset) { | |
2902 | if (bestStamp == hourOfDayStamp) { | |
2903 | // Don't normalize here; let overflow bump into the next period. | |
2904 | // This is consistent with how we handle other fields. | |
2905 | millisInDay += internalGet(UCAL_HOUR_OF_DAY); | |
2906 | } else { | |
2907 | // Don't normalize here; let overflow bump into the next period. | |
2908 | // This is consistent with how we handle other fields. | |
2909 | millisInDay += internalGet(UCAL_HOUR); | |
2910 | millisInDay += 12 * internalGet(UCAL_AM_PM); // Default works for unset AM_PM | |
2911 | } | |
2912 | } | |
2913 | ||
2914 | // We use the fact that unset == 0; we start with millisInDay | |
2915 | // == HOUR_OF_DAY. | |
2916 | millisInDay *= 60; | |
2917 | millisInDay += internalGet(UCAL_MINUTE); // now have minutes | |
2918 | millisInDay *= 60; | |
2919 | millisInDay += internalGet(UCAL_SECOND); // now have seconds | |
2920 | millisInDay *= 1000; | |
2921 | millisInDay += internalGet(UCAL_MILLISECOND); // now have millis | |
2922 | ||
2923 | return millisInDay; | |
374ca955 A |
2924 | } |
2925 | ||
2926 | /** | |
46f4442e A |
2927 | * This method can assume EXTENDED_YEAR has been set. |
2928 | * @param millis milliseconds of the date fields | |
2929 | * @param millisInDay milliseconds of the time fields; may be out | |
2930 | * or range. | |
2931 | * @stable ICU 2.0 | |
2932 | */ | |
374ca955 | 2933 | int32_t Calendar::computeZoneOffset(double millis, int32_t millisInDay, UErrorCode &ec) { |
46f4442e | 2934 | int32_t rawOffset, dstOffset; |
4388f060 A |
2935 | UDate wall = millis + millisInDay; |
2936 | BasicTimeZone* btz = getBasicTimeZone(); | |
2937 | if (btz) { | |
2938 | int duplicatedTimeOpt = (fRepeatedWallTime == UCAL_WALLTIME_FIRST) ? BasicTimeZone::kFormer : BasicTimeZone::kLatter; | |
2939 | int nonExistingTimeOpt = (fSkippedWallTime == UCAL_WALLTIME_FIRST) ? BasicTimeZone::kLatter : BasicTimeZone::kFormer; | |
2940 | btz->getOffsetFromLocal(wall, nonExistingTimeOpt, duplicatedTimeOpt, rawOffset, dstOffset, ec); | |
2941 | } else { | |
2942 | const TimeZone& tz = getTimeZone(); | |
2943 | // By default, TimeZone::getOffset behaves UCAL_WALLTIME_LAST for both. | |
2944 | tz.getOffset(wall, TRUE, rawOffset, dstOffset, ec); | |
2945 | ||
2946 | UBool sawRecentNegativeShift = FALSE; | |
2947 | if (fRepeatedWallTime == UCAL_WALLTIME_FIRST) { | |
2948 | // Check if the given wall time falls into repeated time range | |
2949 | UDate tgmt = wall - (rawOffset + dstOffset); | |
2950 | ||
2951 | // Any negative zone transition within last 6 hours? | |
2952 | // Note: The maximum historic negative zone transition is -3 hours in the tz database. | |
2953 | // 6 hour window would be sufficient for this purpose. | |
2954 | int32_t tmpRaw, tmpDst; | |
2955 | tz.getOffset(tgmt - 6*60*60*1000, FALSE, tmpRaw, tmpDst, ec); | |
2956 | int32_t offsetDelta = (rawOffset + dstOffset) - (tmpRaw + tmpDst); | |
2957 | ||
2958 | U_ASSERT(offsetDelta < -6*60*60*1000); | |
2959 | if (offsetDelta < 0) { | |
2960 | sawRecentNegativeShift = TRUE; | |
2961 | // Negative shift within last 6 hours. When UCAL_WALLTIME_FIRST is used and the given wall time falls | |
2962 | // into the repeated time range, use offsets before the transition. | |
2963 | // Note: If it does not fall into the repeated time range, offsets remain unchanged below. | |
2964 | tz.getOffset(wall + offsetDelta, TRUE, rawOffset, dstOffset, ec); | |
2965 | } | |
2966 | } | |
2967 | if (!sawRecentNegativeShift && fSkippedWallTime == UCAL_WALLTIME_FIRST) { | |
2968 | // When skipped wall time option is WALLTIME_FIRST, | |
2969 | // recalculate offsets from the resolved time (non-wall). | |
2970 | // When the given wall time falls into skipped wall time, | |
2971 | // the offsets will be based on the zone offsets AFTER | |
2972 | // the transition (which means, earliest possibe interpretation). | |
2973 | UDate tgmt = wall - (rawOffset + dstOffset); | |
2974 | tz.getOffset(tgmt, FALSE, rawOffset, dstOffset, ec); | |
2975 | } | |
2976 | } | |
46f4442e | 2977 | return rawOffset + dstOffset; |
374ca955 A |
2978 | } |
2979 | ||
2980 | int32_t Calendar::computeJulianDay() | |
2981 | { | |
46f4442e A |
2982 | // We want to see if any of the date fields is newer than the |
2983 | // JULIAN_DAY. If not, then we use JULIAN_DAY. If so, then we do | |
2984 | // the normal resolution. We only use JULIAN_DAY if it has been | |
2985 | // set by the user. This makes it possible for the caller to set | |
2986 | // the calendar to a time and call clear(MONTH) to reset the MONTH | |
2987 | // to January. This is legacy behavior. Without this, | |
2988 | // clear(MONTH) has no effect, since the internally set JULIAN_DAY | |
2989 | // is used. | |
2990 | if (fStamp[UCAL_JULIAN_DAY] >= (int32_t)kMinimumUserStamp) { | |
2991 | int32_t bestStamp = newestStamp(UCAL_ERA, UCAL_DAY_OF_WEEK_IN_MONTH, kUnset); | |
2992 | bestStamp = newestStamp(UCAL_YEAR_WOY, UCAL_EXTENDED_YEAR, bestStamp); | |
2993 | if (bestStamp <= fStamp[UCAL_JULIAN_DAY]) { | |
2994 | return internalGet(UCAL_JULIAN_DAY); | |
2995 | } | |
374ca955 | 2996 | } |
374ca955 | 2997 | |
46f4442e A |
2998 | UCalendarDateFields bestField = resolveFields(getFieldResolutionTable()); |
2999 | if (bestField == UCAL_FIELD_COUNT) { | |
3000 | bestField = UCAL_DAY_OF_MONTH; | |
3001 | } | |
374ca955 | 3002 | |
46f4442e | 3003 | return handleComputeJulianDay(bestField); |
374ca955 A |
3004 | } |
3005 | ||
3006 | // ------------------------------------------- | |
3007 | ||
3008 | int32_t Calendar::handleComputeJulianDay(UCalendarDateFields bestField) { | |
46f4442e A |
3009 | UBool useMonth = (bestField == UCAL_DAY_OF_MONTH || |
3010 | bestField == UCAL_WEEK_OF_MONTH || | |
3011 | bestField == UCAL_DAY_OF_WEEK_IN_MONTH); | |
3012 | int32_t year; | |
3013 | ||
3014 | if (bestField == UCAL_WEEK_OF_YEAR) { | |
3015 | year = internalGet(UCAL_YEAR_WOY, handleGetExtendedYear()); | |
3016 | internalSet(UCAL_EXTENDED_YEAR, year); | |
3017 | } else { | |
3018 | year = handleGetExtendedYear(); | |
3019 | internalSet(UCAL_EXTENDED_YEAR, year); | |
3020 | } | |
374ca955 A |
3021 | |
3022 | #if defined (U_DEBUG_CAL) | |
46f4442e | 3023 | fprintf(stderr, "%s:%d: bestField= %s - y=%d\n", __FILE__, __LINE__, fldName(bestField), year); |
374ca955 A |
3024 | #endif |
3025 | ||
46f4442e A |
3026 | // Get the Julian day of the day BEFORE the start of this year. |
3027 | // If useMonth is true, get the day before the start of the month. | |
374ca955 | 3028 | |
46f4442e A |
3029 | // give calendar subclass a chance to have a default 'first' month |
3030 | int32_t month; | |
374ca955 | 3031 | |
46f4442e A |
3032 | if(isSet(UCAL_MONTH)) { |
3033 | month = internalGet(UCAL_MONTH); | |
3034 | } else { | |
729e4ab9 | 3035 | month = getDefaultMonthInYear(year); |
46f4442e | 3036 | } |
374ca955 | 3037 | |
46f4442e | 3038 | int32_t julianDay = handleComputeMonthStart(year, useMonth ? month : 0, useMonth); |
374ca955 | 3039 | |
46f4442e A |
3040 | if (bestField == UCAL_DAY_OF_MONTH) { |
3041 | ||
3042 | // give calendar subclass a chance to have a default 'first' dom | |
3043 | int32_t dayOfMonth; | |
3044 | if(isSet(UCAL_DAY_OF_MONTH)) { | |
3045 | dayOfMonth = internalGet(UCAL_DAY_OF_MONTH,1); | |
3046 | } else { | |
729e4ab9 | 3047 | dayOfMonth = getDefaultDayInMonth(year, month); |
46f4442e A |
3048 | } |
3049 | return julianDay + dayOfMonth; | |
3050 | } | |
3051 | ||
3052 | if (bestField == UCAL_DAY_OF_YEAR) { | |
3053 | return julianDay + internalGet(UCAL_DAY_OF_YEAR); | |
3054 | } | |
3055 | ||
3056 | int32_t firstDayOfWeek = getFirstDayOfWeek(); // Localized fdw | |
3057 | ||
3058 | // At this point julianDay is the 0-based day BEFORE the first day of | |
3059 | // January 1, year 1 of the given calendar. If julianDay == 0, it | |
3060 | // specifies (Jan. 1, 1) - 1, in whatever calendar we are using (Julian | |
3061 | // or Gregorian). (or it is before the month we are in, if useMonth is True) | |
3062 | ||
3063 | // At this point we need to process the WEEK_OF_MONTH or | |
3064 | // WEEK_OF_YEAR, which are similar, or the DAY_OF_WEEK_IN_MONTH. | |
3065 | // First, perform initial shared computations. These locate the | |
3066 | // first week of the period. | |
3067 | ||
3068 | // Get the 0-based localized DOW of day one of the month or year. | |
3069 | // Valid range 0..6. | |
3070 | int32_t first = julianDayToDayOfWeek(julianDay + 1) - firstDayOfWeek; | |
3071 | if (first < 0) { | |
3072 | first += 7; | |
3073 | } | |
3074 | ||
3075 | int32_t dowLocal = getLocalDOW(); | |
3076 | ||
3077 | // Find the first target DOW (dowLocal) in the month or year. | |
3078 | // Actually, it may be just before the first of the month or year. | |
3079 | // It will be an integer from -5..7. | |
3080 | int32_t date = 1 - first + dowLocal; | |
3081 | ||
3082 | if (bestField == UCAL_DAY_OF_WEEK_IN_MONTH) { | |
3083 | // Adjust the target DOW to be in the month or year. | |
3084 | if (date < 1) { | |
3085 | date += 7; | |
3086 | } | |
3087 | ||
3088 | // The only trickiness occurs if the day-of-week-in-month is | |
3089 | // negative. | |
3090 | int32_t dim = internalGet(UCAL_DAY_OF_WEEK_IN_MONTH, 1); | |
3091 | if (dim >= 0) { | |
3092 | date += 7*(dim - 1); | |
3093 | ||
3094 | } else { | |
3095 | // Move date to the last of this day-of-week in this month, | |
3096 | // then back up as needed. If dim==-1, we don't back up at | |
3097 | // all. If dim==-2, we back up once, etc. Don't back up | |
3098 | // past the first of the given day-of-week in this month. | |
3099 | // Note that we handle -2, -3, etc. correctly, even though | |
3100 | // values < -1 are technically disallowed. | |
3101 | int32_t m = internalGet(UCAL_MONTH, UCAL_JANUARY); | |
3102 | int32_t monthLength = handleGetMonthLength(year, m); | |
3103 | date += ((monthLength - date) / 7 + dim + 1) * 7; | |
3104 | } | |
374ca955 | 3105 | } else { |
374ca955 | 3106 | #if defined (U_DEBUG_CAL) |
46f4442e | 3107 | fprintf(stderr, "%s:%d - bf= %s\n", __FILE__, __LINE__, fldName(bestField)); |
374ca955 A |
3108 | #endif |
3109 | ||
46f4442e A |
3110 | if(bestField == UCAL_WEEK_OF_YEAR) { // ------------------------------------- WOY ------------- |
3111 | if(!isSet(UCAL_YEAR_WOY) || // YWOY not set at all or | |
3112 | ( (resolveFields(kYearPrecedence) != UCAL_YEAR_WOY) // YWOY doesn't have precedence | |
3113 | && (fStamp[UCAL_YEAR_WOY]!=kInternallySet) ) ) // (excluding where all fields are internally set - then YWOY is used) | |
3114 | { | |
3115 | // need to be sure to stay in 'real' year. | |
3116 | int32_t woy = internalGet(bestField); | |
3117 | ||
3118 | int32_t nextJulianDay = handleComputeMonthStart(year+1, 0, FALSE); // jd of day before jan 1 | |
3119 | int32_t nextFirst = julianDayToDayOfWeek(nextJulianDay + 1) - firstDayOfWeek; | |
3120 | ||
3121 | if (nextFirst < 0) { // 0..6 ldow of Jan 1 | |
3122 | nextFirst += 7; | |
3123 | } | |
374ca955 | 3124 | |
46f4442e | 3125 | if(woy==1) { // FIRST WEEK --------------------------------- |
374ca955 | 3126 | #if defined (U_DEBUG_CAL) |
46f4442e A |
3127 | fprintf(stderr, "%s:%d - woy=%d, yp=%d, nj(%d)=%d, nf=%d", __FILE__, __LINE__, |
3128 | internalGet(bestField), resolveFields(kYearPrecedence), year+1, | |
3129 | nextJulianDay, nextFirst); | |
3130 | ||
3131 | fprintf(stderr, " next: %d DFW, min=%d \n", (7-nextFirst), getMinimalDaysInFirstWeek() ); | |
374ca955 | 3132 | #endif |
46f4442e A |
3133 | |
3134 | // nextFirst is now the localized DOW of Jan 1 of y-woy+1 | |
3135 | if((nextFirst > 0) && // Jan 1 starts on FDOW | |
3136 | (7-nextFirst) >= getMinimalDaysInFirstWeek()) // or enough days in the week | |
3137 | { | |
3138 | // Jan 1 of (yearWoy+1) is in yearWoy+1 - recalculate JD to next year | |
374ca955 | 3139 | #if defined (U_DEBUG_CAL) |
46f4442e A |
3140 | fprintf(stderr, "%s:%d - was going to move JD from %d to %d [d%d]\n", __FILE__, __LINE__, |
3141 | julianDay, nextJulianDay, (nextJulianDay-julianDay)); | |
374ca955 | 3142 | #endif |
46f4442e A |
3143 | julianDay = nextJulianDay; |
3144 | ||
3145 | // recalculate 'first' [0-based local dow of jan 1] | |
3146 | first = julianDayToDayOfWeek(julianDay + 1) - firstDayOfWeek; | |
3147 | if (first < 0) { | |
3148 | first += 7; | |
3149 | } | |
3150 | // recalculate date. | |
3151 | date = 1 - first + dowLocal; | |
3152 | } | |
3153 | } else if(woy>=getLeastMaximum(bestField)) { | |
3154 | // could be in the last week- find out if this JD would overstep | |
3155 | int32_t testDate = date; | |
3156 | if ((7 - first) < getMinimalDaysInFirstWeek()) { | |
3157 | testDate += 7; | |
3158 | } | |
3159 | ||
3160 | // Now adjust for the week number. | |
3161 | testDate += 7 * (woy - 1); | |
3162 | ||
374ca955 | 3163 | #if defined (U_DEBUG_CAL) |
46f4442e A |
3164 | fprintf(stderr, "%s:%d - y=%d, y-1=%d doy%d, njd%d (C.F. %d)\n", |
3165 | __FILE__, __LINE__, year, year-1, testDate, julianDay+testDate, nextJulianDay); | |
374ca955 | 3166 | #endif |
46f4442e A |
3167 | if(julianDay+testDate > nextJulianDay) { // is it past Dec 31? (nextJulianDay is day BEFORE year+1's Jan 1) |
3168 | // Fire up the calculating engines.. retry YWOY = (year-1) | |
3169 | julianDay = handleComputeMonthStart(year-1, 0, FALSE); // jd before Jan 1 of previous year | |
3170 | first = julianDayToDayOfWeek(julianDay + 1) - firstDayOfWeek; // 0 based local dow of first week | |
3171 | ||
3172 | if(first < 0) { // 0..6 | |
3173 | first += 7; | |
3174 | } | |
3175 | date = 1 - first + dowLocal; | |
374ca955 A |
3176 | |
3177 | #if defined (U_DEBUG_CAL) | |
46f4442e A |
3178 | fprintf(stderr, "%s:%d - date now %d, jd%d, ywoy%d\n", |
3179 | __FILE__, __LINE__, date, julianDay, year-1); | |
374ca955 A |
3180 | #endif |
3181 | ||
46f4442e A |
3182 | |
3183 | } /* correction needed */ | |
3184 | } /* leastmaximum */ | |
3185 | } /* resolvefields(year) != year_woy */ | |
3186 | } /* bestfield != week_of_year */ | |
3187 | ||
3188 | // assert(bestField == WEEK_OF_MONTH || bestField == WEEK_OF_YEAR) | |
3189 | // Adjust for minimal days in first week | |
3190 | if ((7 - first) < getMinimalDaysInFirstWeek()) { | |
3191 | date += 7; | |
3192 | } | |
3193 | ||
3194 | // Now adjust for the week number. | |
3195 | date += 7 * (internalGet(bestField) - 1); | |
3196 | } | |
3197 | ||
3198 | return julianDay + date; | |
374ca955 A |
3199 | } |
3200 | ||
3201 | int32_t | |
729e4ab9 | 3202 | Calendar::getDefaultMonthInYear(int32_t /*eyear*/) |
374ca955 A |
3203 | { |
3204 | return 0; | |
3205 | } | |
3206 | ||
3207 | int32_t | |
729e4ab9 | 3208 | Calendar::getDefaultDayInMonth(int32_t /*eyear*/, int32_t /*month*/) |
374ca955 A |
3209 | { |
3210 | return 1; | |
3211 | } | |
3212 | ||
3213 | ||
3214 | int32_t Calendar::getLocalDOW() | |
3215 | { | |
3216 | // Get zero-based localized DOW, valid range 0..6. This is the DOW | |
46f4442e A |
3217 | // we are looking for. |
3218 | int32_t dowLocal = 0; | |
3219 | switch (resolveFields(kDOWPrecedence)) { | |
3220 | case UCAL_DAY_OF_WEEK: | |
3221 | dowLocal = internalGet(UCAL_DAY_OF_WEEK) - fFirstDayOfWeek; | |
3222 | break; | |
3223 | case UCAL_DOW_LOCAL: | |
3224 | dowLocal = internalGet(UCAL_DOW_LOCAL) - 1; | |
3225 | break; | |
3226 | default: | |
3227 | break; | |
3228 | } | |
3229 | dowLocal = dowLocal % 7; | |
3230 | if (dowLocal < 0) { | |
3231 | dowLocal += 7; | |
3232 | } | |
3233 | return dowLocal; | |
374ca955 A |
3234 | } |
3235 | ||
3236 | int32_t Calendar::handleGetExtendedYearFromWeekFields(int32_t yearWoy, int32_t woy) | |
3237 | { | |
46f4442e A |
3238 | // We have UCAL_YEAR_WOY and UCAL_WEEK_OF_YEAR - from those, determine |
3239 | // what year we fall in, so that other code can set it properly. | |
3240 | // (code borrowed from computeWeekFields and handleComputeJulianDay) | |
3241 | //return yearWoy; | |
3242 | ||
3243 | // First, we need a reliable DOW. | |
3244 | UCalendarDateFields bestField = resolveFields(kDatePrecedence); // !! Note: if subclasses have a different table, they should override handleGetExtendedYearFromWeekFields | |
3245 | ||
3246 | // Now, a local DOW | |
3247 | int32_t dowLocal = getLocalDOW(); // 0..6 | |
3248 | int32_t firstDayOfWeek = getFirstDayOfWeek(); // Localized fdw | |
3249 | int32_t jan1Start = handleComputeMonthStart(yearWoy, 0, FALSE); | |
3250 | int32_t nextJan1Start = handleComputeMonthStart(yearWoy+1, 0, FALSE); // next year's Jan1 start | |
3251 | ||
3252 | // At this point julianDay is the 0-based day BEFORE the first day of | |
3253 | // January 1, year 1 of the given calendar. If julianDay == 0, it | |
3254 | // specifies (Jan. 1, 1) - 1, in whatever calendar we are using (Julian | |
3255 | // or Gregorian). (or it is before the month we are in, if useMonth is True) | |
3256 | ||
3257 | // At this point we need to process the WEEK_OF_MONTH or | |
3258 | // WEEK_OF_YEAR, which are similar, or the DAY_OF_WEEK_IN_MONTH. | |
3259 | // First, perform initial shared computations. These locate the | |
3260 | // first week of the period. | |
3261 | ||
3262 | // Get the 0-based localized DOW of day one of the month or year. | |
3263 | // Valid range 0..6. | |
3264 | int32_t first = julianDayToDayOfWeek(jan1Start + 1) - firstDayOfWeek; | |
3265 | if (first < 0) { | |
3266 | first += 7; | |
3267 | } | |
3268 | int32_t nextFirst = julianDayToDayOfWeek(nextJan1Start + 1) - firstDayOfWeek; | |
3269 | if (nextFirst < 0) { | |
3270 | nextFirst += 7; | |
3271 | } | |
3272 | ||
3273 | int32_t minDays = getMinimalDaysInFirstWeek(); | |
3274 | UBool jan1InPrevYear = FALSE; // January 1st in the year of WOY is the 1st week? (i.e. first week is < minimal ) | |
3275 | //UBool nextJan1InPrevYear = FALSE; // January 1st of Year of WOY + 1 is in the first week? | |
3276 | ||
3277 | if((7 - first) < minDays) { | |
3278 | jan1InPrevYear = TRUE; | |
3279 | } | |
3280 | ||
3281 | // if((7 - nextFirst) < minDays) { | |
3282 | // nextJan1InPrevYear = TRUE; | |
3283 | // } | |
3284 | ||
3285 | switch(bestField) { | |
3286 | case UCAL_WEEK_OF_YEAR: | |
3287 | if(woy == 1) { | |
3288 | if(jan1InPrevYear == TRUE) { | |
3289 | // the first week of January is in the previous year | |
3290 | // therefore WOY1 is always solidly within yearWoy | |
3291 | return yearWoy; | |
3292 | } else { | |
3293 | // First WOY is split between two years | |
3294 | if( dowLocal < first) { // we are prior to Jan 1 | |
3295 | return yearWoy-1; // previous year | |
3296 | } else { | |
3297 | return yearWoy; // in this year | |
3298 | } | |
3299 | } | |
3300 | } else if(woy >= getLeastMaximum(bestField)) { | |
3301 | // we _might_ be in the last week.. | |
3302 | int32_t jd = // Calculate JD of our target day: | |
3303 | jan1Start + // JD of Jan 1 | |
3304 | (7-first) + // days in the first week (Jan 1.. ) | |
3305 | (woy-1)*7 + // add the weeks of the year | |
3306 | dowLocal; // the local dow (0..6) of last week | |
3307 | if(jan1InPrevYear==FALSE) { | |
3308 | jd -= 7; // woy already includes Jan 1's week. | |
3309 | } | |
3310 | ||
3311 | if( (jd+1) >= nextJan1Start ) { | |
3312 | // we are in week 52 or 53 etc. - actual year is yearWoy+1 | |
3313 | return yearWoy+1; | |
3314 | } else { | |
3315 | // still in yearWoy; | |
3316 | return yearWoy; | |
3317 | } | |
3318 | } else { | |
3319 | // we're not possibly in the last week -must be ywoy | |
3320 | return yearWoy; | |
3321 | } | |
374ca955 A |
3322 | |
3323 | case UCAL_DATE: | |
46f4442e A |
3324 | if((internalGet(UCAL_MONTH)==0) && |
3325 | (woy >= getLeastMaximum(UCAL_WEEK_OF_YEAR))) { | |
3326 | return yearWoy+1; // month 0, late woy = in the next year | |
3327 | } else if(woy==1) { | |
3328 | //if(nextJan1InPrevYear) { | |
3329 | if(internalGet(UCAL_MONTH)==0) { | |
3330 | return yearWoy; | |
3331 | } else { | |
3332 | return yearWoy-1; | |
3333 | } | |
3334 | //} | |
3335 | } | |
3336 | ||
3337 | //(internalGet(UCAL_DATE) <= (7-first)) /* && in minDow */ ) { | |
3338 | //within 1st week and in this month.. | |
3339 | //return yearWoy+1; | |
3340 | return yearWoy; | |
46f4442e A |
3341 | |
3342 | default: // assume the year is appropriate | |
3343 | return yearWoy; | |
46f4442e | 3344 | } |
374ca955 A |
3345 | } |
3346 | ||
3347 | int32_t Calendar::handleGetMonthLength(int32_t extendedYear, int32_t month) const | |
3348 | { | |
3349 | return handleComputeMonthStart(extendedYear, month+1, TRUE) - | |
3350 | handleComputeMonthStart(extendedYear, month, TRUE); | |
3351 | } | |
3352 | ||
3353 | int32_t Calendar::handleGetYearLength(int32_t eyear) const { | |
3354 | return handleComputeMonthStart(eyear+1, 0, FALSE) - | |
46f4442e | 3355 | handleComputeMonthStart(eyear, 0, FALSE); |
374ca955 A |
3356 | } |
3357 | ||
b75a7d8f A |
3358 | int32_t |
3359 | Calendar::getActualMaximum(UCalendarDateFields field, UErrorCode& status) const | |
3360 | { | |
374ca955 A |
3361 | int32_t result; |
3362 | switch (field) { | |
3363 | case UCAL_DATE: | |
3364 | { | |
3365 | if(U_FAILURE(status)) return 0; | |
3366 | Calendar *cal = clone(); | |
3367 | if(!cal) { status = U_MEMORY_ALLOCATION_ERROR; return 0; } | |
4388f060 | 3368 | cal->setLenient(TRUE); |
374ca955 A |
3369 | cal->prepareGetActual(field,FALSE,status); |
3370 | result = handleGetMonthLength(cal->get(UCAL_EXTENDED_YEAR, status), cal->get(UCAL_MONTH, status)); | |
3371 | delete cal; | |
3372 | } | |
3373 | break; | |
b75a7d8f | 3374 | |
374ca955 A |
3375 | case UCAL_DAY_OF_YEAR: |
3376 | { | |
3377 | if(U_FAILURE(status)) return 0; | |
3378 | Calendar *cal = clone(); | |
3379 | if(!cal) { status = U_MEMORY_ALLOCATION_ERROR; return 0; } | |
4388f060 | 3380 | cal->setLenient(TRUE); |
374ca955 A |
3381 | cal->prepareGetActual(field,FALSE,status); |
3382 | result = handleGetYearLength(cal->get(UCAL_EXTENDED_YEAR, status)); | |
3383 | delete cal; | |
3384 | } | |
3385 | break; | |
3386 | ||
46f4442e A |
3387 | case UCAL_DAY_OF_WEEK: |
3388 | case UCAL_AM_PM: | |
3389 | case UCAL_HOUR: | |
3390 | case UCAL_HOUR_OF_DAY: | |
3391 | case UCAL_MINUTE: | |
3392 | case UCAL_SECOND: | |
3393 | case UCAL_MILLISECOND: | |
3394 | case UCAL_ZONE_OFFSET: | |
3395 | case UCAL_DST_OFFSET: | |
3396 | case UCAL_DOW_LOCAL: | |
374ca955 A |
3397 | case UCAL_JULIAN_DAY: |
3398 | case UCAL_MILLISECONDS_IN_DAY: | |
3399 | // These fields all have fixed minima/maxima | |
3400 | result = getMaximum(field); | |
3401 | break; | |
3402 | ||
3403 | default: | |
3404 | // For all other fields, do it the hard way.... | |
3405 | result = getActualHelper(field, getLeastMaximum(field), getMaximum(field),status); | |
3406 | break; | |
3407 | } | |
3408 | return result; | |
3409 | } | |
3410 | ||
3411 | ||
3412 | /** | |
3413 | * Prepare this calendar for computing the actual minimum or maximum. | |
3414 | * This method modifies this calendar's fields; it is called on a | |
3415 | * temporary calendar. | |
3416 | * | |
3417 | * <p>Rationale: The semantics of getActualXxx() is to return the | |
3418 | * maximum or minimum value that the given field can take, taking into | |
3419 | * account other relevant fields. In general these other fields are | |
3420 | * larger fields. For example, when computing the actual maximum | |
3421 | * DATE, the current value of DATE itself is ignored, | |
3422 | * as is the value of any field smaller. | |
3423 | * | |
3424 | * <p>The time fields all have fixed minima and maxima, so we don't | |
3425 | * need to worry about them. This also lets us set the | |
3426 | * MILLISECONDS_IN_DAY to zero to erase any effects the time fields | |
3427 | * might have when computing date fields. | |
3428 | * | |
3429 | * <p>DAY_OF_WEEK is adjusted specially for the WEEK_OF_MONTH and | |
3430 | * WEEK_OF_YEAR fields to ensure that they are computed correctly. | |
3431 | * @internal | |
3432 | */ | |
3433 | void Calendar::prepareGetActual(UCalendarDateFields field, UBool isMinimum, UErrorCode &status) | |
46f4442e | 3434 | { |
374ca955 A |
3435 | set(UCAL_MILLISECONDS_IN_DAY, 0); |
3436 | ||
3437 | switch (field) { | |
3438 | case UCAL_YEAR: | |
374ca955 A |
3439 | case UCAL_EXTENDED_YEAR: |
3440 | set(UCAL_DAY_OF_YEAR, getGreatestMinimum(UCAL_DAY_OF_YEAR)); | |
3441 | break; | |
3442 | ||
46f4442e A |
3443 | case UCAL_YEAR_WOY: |
3444 | set(UCAL_WEEK_OF_YEAR, getGreatestMinimum(UCAL_WEEK_OF_YEAR)); | |
3445 | ||
374ca955 A |
3446 | case UCAL_MONTH: |
3447 | set(UCAL_DATE, getGreatestMinimum(UCAL_DATE)); | |
3448 | break; | |
3449 | ||
3450 | case UCAL_DAY_OF_WEEK_IN_MONTH: | |
3451 | // For dowim, the maximum occurs for the DOW of the first of the | |
3452 | // month. | |
3453 | set(UCAL_DATE, 1); | |
3454 | set(UCAL_DAY_OF_WEEK, get(UCAL_DAY_OF_WEEK, status)); // Make this user set | |
3455 | break; | |
3456 | ||
3457 | case UCAL_WEEK_OF_MONTH: | |
3458 | case UCAL_WEEK_OF_YEAR: | |
3459 | // If we're counting weeks, set the day of the week to either the | |
3460 | // first or last localized DOW. We know the last week of a month | |
3461 | // or year will contain the first day of the week, and that the | |
3462 | // first week will contain the last DOW. | |
3463 | { | |
3464 | int32_t dow = fFirstDayOfWeek; | |
3465 | if (isMinimum) { | |
3466 | dow = (dow + 6) % 7; // set to last DOW | |
3467 | if (dow < UCAL_SUNDAY) { | |
3468 | dow += 7; | |
3469 | } | |
3470 | } | |
3471 | #if defined (U_DEBUG_CAL) | |
3472 | fprintf(stderr, "prepareGetActualHelper(WOM/WOY) - dow=%d\n", dow); | |
3473 | #endif | |
3474 | set(UCAL_DAY_OF_WEEK, dow); | |
3475 | } | |
3476 | break; | |
3477 | default: | |
46f4442e | 3478 | break; |
b75a7d8f A |
3479 | } |
3480 | ||
374ca955 A |
3481 | // Do this last to give it the newest time stamp |
3482 | set(field, getGreatestMinimum(field)); | |
3483 | } | |
3484 | ||
3485 | int32_t Calendar::getActualHelper(UCalendarDateFields field, int32_t startValue, int32_t endValue, UErrorCode &status) const | |
3486 | { | |
3487 | #if defined (U_DEBUG_CAL) | |
46f4442e | 3488 | fprintf(stderr, "getActualHelper(%d,%d .. %d, %s)\n", field, startValue, endValue, u_errorName(status)); |
374ca955 A |
3489 | #endif |
3490 | if (startValue == endValue) { | |
3491 | // if we know that the maximum value is always the same, just return it | |
3492 | return startValue; | |
3493 | } | |
3494 | ||
3495 | int32_t delta = (endValue > startValue) ? 1 : -1; | |
3496 | ||
b75a7d8f A |
3497 | // clone the calendar so we don't mess with the real one, and set it to |
3498 | // accept anything for the field values | |
374ca955 A |
3499 | if(U_FAILURE(status)) return startValue; |
3500 | Calendar *work = clone(); | |
3501 | if(!work) { status = U_MEMORY_ALLOCATION_ERROR; return startValue; } | |
4388f060 A |
3502 | |
3503 | // need to resolve time here, otherwise, fields set for actual limit | |
3504 | // may cause conflict with fields previously set (but not yet resolved). | |
3505 | work->complete(status); | |
3506 | ||
b75a7d8f | 3507 | work->setLenient(TRUE); |
46f4442e | 3508 | work->prepareGetActual(field, delta < 0, status); |
b75a7d8f | 3509 | |
374ca955 | 3510 | // now try each value from the start to the end one by one until |
b75a7d8f A |
3511 | // we get a value that normalizes to another value. The last value that |
3512 | // normalizes to itself is the actual maximum for the current date | |
46f4442e A |
3513 | work->set(field, startValue); |
3514 | ||
3515 | // prepareGetActual sets the first day of week in the same week with | |
3516 | // the first day of a month. Unlike WEEK_OF_YEAR, week number for the | |
3517 | // week which contains days from both previous and current month is | |
3518 | // not unique. For example, last several days in the previous month | |
3519 | // is week 5, and the rest of week is week 1. | |
374ca955 | 3520 | int32_t result = startValue; |
729e4ab9 A |
3521 | if ((work->get(field, status) != startValue |
3522 | && field != UCAL_WEEK_OF_MONTH && delta > 0 ) || U_FAILURE(status)) { | |
374ca955 | 3523 | #if defined (U_DEBUG_CAL) |
46f4442e | 3524 | fprintf(stderr, "getActualHelper(fld %d) - got %d (not %d) - %s\n", field, work->get(field,status), startValue, u_errorName(status)); |
374ca955 | 3525 | #endif |
46f4442e A |
3526 | } else { |
3527 | do { | |
374ca955 | 3528 | startValue += delta; |
46f4442e A |
3529 | work->add(field, delta, status); |
3530 | if (work->get(field, status) != startValue || U_FAILURE(status)) { | |
3531 | #if defined (U_DEBUG_CAL) | |
3532 | fprintf(stderr, "getActualHelper(fld %d) - got %d (not %d), BREAK - %s\n", field, work->get(field,status), startValue, u_errorName(status)); | |
374ca955 | 3533 | #endif |
46f4442e A |
3534 | break; |
3535 | } | |
3536 | result = startValue; | |
3537 | } while (startValue != endValue); | |
3538 | } | |
b75a7d8f | 3539 | delete work; |
374ca955 A |
3540 | #if defined (U_DEBUG_CAL) |
3541 | fprintf(stderr, "getActualHelper(%d) = %d\n", field, result); | |
3542 | #endif | |
b75a7d8f A |
3543 | return result; |
3544 | } | |
3545 | ||
374ca955 A |
3546 | |
3547 | ||
3548 | ||
b75a7d8f A |
3549 | // ------------------------------------- |
3550 | ||
3551 | void | |
729e4ab9 | 3552 | Calendar::setWeekData(const Locale& desiredLocale, const char *type, UErrorCode& status) |
b75a7d8f | 3553 | { |
b75a7d8f A |
3554 | |
3555 | if (U_FAILURE(status)) return; | |
3556 | ||
3557 | fFirstDayOfWeek = UCAL_SUNDAY; | |
3558 | fMinimalDaysInFirstWeek = 1; | |
729e4ab9 A |
3559 | fWeekendOnset = UCAL_SATURDAY; |
3560 | fWeekendOnsetMillis = 0; | |
3561 | fWeekendCease = UCAL_SUNDAY; | |
3562 | fWeekendCeaseMillis = 86400000; // 24*60*60*1000 | |
3563 | ||
3564 | // Since week and weekend data is territory based instead of language based, | |
3565 | // we may need to tweak the locale that we are using to try to get the appropriate | |
3566 | // values, using the following logic: | |
3567 | // 1). If the locale has a language but no territory, use the territory as defined by | |
3568 | // the likely subtags. | |
3569 | // 2). If the locale has a script designation then we ignore it, | |
3570 | // then remove it ( i.e. "en_Latn_US" becomes "en_US" ) | |
3571 | ||
3572 | char minLocaleID[ULOC_FULLNAME_CAPACITY] = { 0 }; | |
3573 | UErrorCode myStatus = U_ZERO_ERROR; | |
3574 | ||
3575 | uloc_minimizeSubtags(desiredLocale.getName(),minLocaleID,ULOC_FULLNAME_CAPACITY,&myStatus); | |
3576 | Locale min = Locale::createFromName(minLocaleID); | |
3577 | Locale useLocale; | |
3578 | if ( uprv_strlen(desiredLocale.getCountry()) == 0 || | |
4388f060 | 3579 | (uprv_strlen(desiredLocale.getScript()) > 0 && uprv_strlen(min.getScript()) == 0) ) { |
729e4ab9 A |
3580 | char maxLocaleID[ULOC_FULLNAME_CAPACITY] = { 0 }; |
3581 | myStatus = U_ZERO_ERROR; | |
3582 | uloc_addLikelySubtags(desiredLocale.getName(),maxLocaleID,ULOC_FULLNAME_CAPACITY,&myStatus); | |
3583 | Locale max = Locale::createFromName(maxLocaleID); | |
3584 | useLocale = Locale(max.getLanguage(),max.getCountry()); | |
3585 | } else { | |
3586 | useLocale = Locale(desiredLocale); | |
3587 | } | |
3588 | ||
4388f060 A |
3589 | /* The code here is somewhat of a hack, since week data and weekend data aren't really tied to |
3590 | a specific calendar, they aren't truly locale data. But this is the only place where valid and | |
3591 | actual locale can be set, so we take a shot at it here by loading a representative resource | |
3592 | from the calendar data. The code used to use the dateTimeElements resource to get first day | |
3593 | of week data, but this was moved to supplemental data under ticket 7755. (JCE) */ | |
3594 | ||
3595 | CalendarData calData(useLocale,type,status); | |
3596 | UResourceBundle *monthNames = calData.getByKey(gMonthNames,status); | |
3597 | if (U_SUCCESS(status)) { | |
3598 | U_LOCALE_BASED(locBased,*this); | |
3599 | locBased.setLocaleIDs(ures_getLocaleByType(monthNames, ULOC_VALID_LOCALE, &status), | |
3600 | ures_getLocaleByType(monthNames, ULOC_ACTUAL_LOCALE, &status)); | |
3601 | } else { | |
3602 | status = U_USING_FALLBACK_WARNING; | |
3603 | return; | |
3604 | } | |
3605 | ||
3606 | ||
3607 | // Read week data values from supplementalData week data | |
3608 | UResourceBundle *rb = ures_openDirect(NULL, "supplementalData", &status); | |
3609 | ures_getByKey(rb, "weekData", rb, &status); | |
3610 | UResourceBundle *weekData = ures_getByKey(rb, useLocale.getCountry(), NULL, &status); | |
3611 | if (status == U_MISSING_RESOURCE_ERROR && rb != NULL) { | |
3612 | status = U_ZERO_ERROR; | |
3613 | weekData = ures_getByKey(rb, "001", NULL, &status); | |
3614 | } | |
374ca955 | 3615 | |
729e4ab9 | 3616 | if (U_FAILURE(status)) { |
374ca955 | 3617 | #if defined (U_DEBUG_CALDATA) |
4388f060 | 3618 | fprintf(stderr, " Failure loading weekData from supplemental = %s\n", u_errorName(status)); |
374ca955 | 3619 | #endif |
b75a7d8f | 3620 | status = U_USING_FALLBACK_WARNING; |
729e4ab9 | 3621 | } else { |
4388f060 A |
3622 | int32_t arrLen; |
3623 | const int32_t *weekDataArr = ures_getIntVector(weekData,&arrLen,&status); | |
3624 | if( U_SUCCESS(status) && arrLen == 6 | |
3625 | && 1 <= weekDataArr[0] && weekDataArr[0] <= 7 | |
3626 | && 1 <= weekDataArr[1] && weekDataArr[1] <= 7 | |
3627 | && 1 <= weekDataArr[2] && weekDataArr[2] <= 7 | |
3628 | && 1 <= weekDataArr[4] && weekDataArr[4] <= 7) { | |
3629 | fFirstDayOfWeek = (UCalendarDaysOfWeek)weekDataArr[0]; | |
3630 | fMinimalDaysInFirstWeek = (uint8_t)weekDataArr[1]; | |
3631 | fWeekendOnset = (UCalendarDaysOfWeek)weekDataArr[2]; | |
3632 | fWeekendOnsetMillis = weekDataArr[3]; | |
3633 | fWeekendCease = (UCalendarDaysOfWeek)weekDataArr[4]; | |
3634 | fWeekendCeaseMillis = weekDataArr[5]; | |
729e4ab9 | 3635 | } else { |
4388f060 | 3636 | status = U_INVALID_FORMAT_ERROR; |
729e4ab9 A |
3637 | } |
3638 | } | |
4388f060 A |
3639 | ures_close(weekData); |
3640 | ures_close(rb); | |
b75a7d8f A |
3641 | } |
3642 | ||
3643 | /** | |
46f4442e A |
3644 | * Recompute the time and update the status fields isTimeSet |
3645 | * and areFieldsSet. Callers should check isTimeSet and only | |
3646 | * call this method if isTimeSet is false. | |
3647 | */ | |
b75a7d8f A |
3648 | void |
3649 | Calendar::updateTime(UErrorCode& status) | |
3650 | { | |
3651 | computeTime(status); | |
3652 | if(U_FAILURE(status)) | |
3653 | return; | |
46f4442e | 3654 | |
b75a7d8f A |
3655 | // If we are lenient, we need to recompute the fields to normalize |
3656 | // the values. Also, if we haven't set all the fields yet (i.e., | |
3657 | // in a newly-created object), we need to fill in the fields. [LIU] | |
3658 | if (isLenient() || ! fAreAllFieldsSet) | |
3659 | fAreFieldsSet = FALSE; | |
46f4442e | 3660 | |
b75a7d8f | 3661 | fIsTimeSet = TRUE; |
374ca955 | 3662 | fAreFieldsVirtuallySet = FALSE; |
b75a7d8f A |
3663 | } |
3664 | ||
374ca955 A |
3665 | Locale |
3666 | Calendar::getLocale(ULocDataLocaleType type, UErrorCode& status) const { | |
3667 | U_LOCALE_BASED(locBased, *this); | |
3668 | return locBased.getLocale(type, status); | |
3669 | } | |
b75a7d8f | 3670 | |
374ca955 A |
3671 | const char * |
3672 | Calendar::getLocaleID(ULocDataLocaleType type, UErrorCode& status) const { | |
3673 | U_LOCALE_BASED(locBased, *this); | |
3674 | return locBased.getLocaleID(type, status); | |
b75a7d8f A |
3675 | } |
3676 | ||
4388f060 A |
3677 | void |
3678 | Calendar::recalculateStamp() { | |
3679 | int32_t index; | |
3680 | int32_t currentValue; | |
3681 | int32_t j, i; | |
3682 | ||
3683 | fNextStamp = 1; | |
3684 | ||
3685 | for (j = 0; j < UCAL_FIELD_COUNT; j++) { | |
3686 | currentValue = STAMP_MAX; | |
3687 | index = -1; | |
3688 | for (i = 0; i < UCAL_FIELD_COUNT; i++) { | |
3689 | if (fStamp[i] > fNextStamp && fStamp[i] < currentValue) { | |
3690 | currentValue = fStamp[i]; | |
3691 | index = i; | |
3692 | } | |
3693 | } | |
3694 | ||
3695 | if (index >= 0) { | |
3696 | fStamp[index] = ++fNextStamp; | |
3697 | } else { | |
3698 | break; | |
3699 | } | |
3700 | } | |
3701 | fNextStamp++; | |
3702 | } | |
3703 | ||
46f4442e A |
3704 | // Deprecated function. This doesn't need to be inline. |
3705 | void | |
3706 | Calendar::internalSet(EDateFields field, int32_t value) | |
3707 | { | |
3708 | internalSet((UCalendarDateFields) field, value); | |
3709 | } | |
3710 | ||
4388f060 A |
3711 | BasicTimeZone* |
3712 | Calendar::getBasicTimeZone(void) const { | |
3713 | if (dynamic_cast<const OlsonTimeZone *>(fZone) != NULL | |
3714 | || dynamic_cast<const SimpleTimeZone *>(fZone) != NULL | |
3715 | || dynamic_cast<const RuleBasedTimeZone *>(fZone) != NULL | |
3716 | || dynamic_cast<const VTimeZone *>(fZone) != NULL) { | |
3717 | return (BasicTimeZone*)fZone; | |
3718 | } | |
3719 | return NULL; | |
3720 | } | |
3721 | ||
374ca955 | 3722 | U_NAMESPACE_END |
b75a7d8f A |
3723 | |
3724 | #endif /* #if !UCONFIG_NO_FORMATTING */ | |
3725 | ||
374ca955 | 3726 | |
b75a7d8f | 3727 | //eof |