1 /* 2 ******************************************************************************* 3 * Copyright (C) 1997-2010, International Business Machines Corporation and * 4 * others. All Rights Reserved. * 5 ******************************************************************************* 6 * 7 * File TIMEZONE.CPP 8 * 9 * Modification History: 10 * 11 * Date Name Description 12 * 12/05/96 clhuang Creation. 13 * 04/21/97 aliu General clean-up and bug fixing. 14 * 05/08/97 aliu Fixed Hashtable code per code review. 15 * 07/09/97 helena Changed createInstance to createDefault. 16 * 07/29/97 aliu Updated with all-new list of 96 UNIX-derived 17 * TimeZones. Changed mechanism to load from static 18 * array rather than resource bundle. 19 * 07/07/1998 srl Bugfixes from the Java side: UTC GMT CAT NST 20 * Added getDisplayName API 21 * going to add custom parsing. 22 * 23 * ISSUES: 24 * - should getDisplayName cache something? 25 * - should custom time zones be cached? [probably] 26 * 08/10/98 stephen Brought getDisplayName() API in-line w/ conventions 27 * 08/19/98 stephen Changed createTimeZone() to never return 0 28 * 09/02/98 stephen Added getOffset(monthLen) and hasSameRules() 29 * 09/15/98 stephen Added getStaticClassID() 30 * 02/22/99 stephen Removed character literals for EBCDIC safety 31 * 05/04/99 stephen Changed initDefault() for Mutex issues 32 * 07/12/99 helena HPUX 11 CC Port. 33 * 12/03/99 aliu Moved data out of static table into icudata.dll. 34 * Substantial rewrite of zone lookup, default zone, and 35 * available IDs code. Misc. cleanup. 36 *********************************************************************************/ 37 38 #include <typeinfo> // for 'typeid' to work 39 40 #include "unicode/utypes.h" 41 #include "unicode/ustring.h" 42 43 #ifdef U_DEBUG_TZ 44 # include <stdio.h> 45 # include "uresimp.h" // for debugging 46 47 static void debug_tz_loc(const char *f, int32_t l) 48 { 49 fprintf(stderr, "%s:%d: ", f, l); 50 } 51 52 static void debug_tz_msg(const char *pat, ...) 53 { 54 va_list ap; 55 va_start(ap, pat); 56 vfprintf(stderr, pat, ap); 57 fflush(stderr); 58 } 59 static char gStrBuf[256]; 60 #define U_DEBUG_TZ_STR(x) u_austrncpy(gStrBuf,x,sizeof(gStrBuf)-1) 61 // must use double parens, i.e.: U_DEBUG_TZ_MSG(("four is: %d",4)); 62 #define U_DEBUG_TZ_MSG(x) {debug_tz_loc(__FILE__,__LINE__);debug_tz_msg x;} 63 #else 64 #define U_DEBUG_TZ_MSG(x) 65 #endif 66 67 #if !UCONFIG_NO_FORMATTING 68 69 #include "unicode/simpletz.h" 70 #include "unicode/smpdtfmt.h" 71 #include "unicode/calendar.h" 72 #include "unicode/gregocal.h" 73 #include "unicode/ures.h" 74 #include "gregoimp.h" 75 #include "uresimp.h" // struct UResourceBundle 76 #include "olsontz.h" 77 #include "mutex.h" 78 #include "unicode/udata.h" 79 #include "ucln_in.h" 80 #include "cstring.h" 81 #include "cmemory.h" 82 #include "unicode/strenum.h" 83 #include "uassert.h" 84 #include "zonemeta.h" 85 86 #define kZONEINFO "zoneinfo64" 87 #define kREGIONS "Regions" 88 #define kZONES "Zones" 89 #define kRULES "Rules" 90 #define kNAMES "Names" 91 #define kTZVERSION "TZVersion" 92 #define kLINKS "links" 93 #define kMAX_CUSTOM_HOUR 23 94 #define kMAX_CUSTOM_MIN 59 95 #define kMAX_CUSTOM_SEC 59 96 #define MINUS 0x002D 97 #define PLUS 0x002B 98 #define ZERO_DIGIT 0x0030 99 #define COLON 0x003A 100 101 // Static data and constants 102 103 static const UChar WORLD[] = {0x30, 0x30, 0x31, 0x00}; /* "001" */ 104 105 static const UChar GMT_ID[] = {0x47, 0x4D, 0x54, 0x00}; /* "GMT" */ 106 static const UChar Z_STR[] = {0x7A, 0x00}; /* "z" */ 107 static const UChar ZZZZ_STR[] = {0x7A, 0x7A, 0x7A, 0x7A, 0x00}; /* "zzzz" */ 108 static const UChar Z_UC_STR[] = {0x5A, 0x00}; /* "Z" */ 109 static const UChar ZZZZ_UC_STR[] = {0x5A, 0x5A, 0x5A, 0x5A, 0x00}; /* "ZZZZ" */ 110 static const UChar V_STR[] = {0x76, 0x00}; /* "v" */ 111 static const UChar VVVV_STR[] = {0x76, 0x76, 0x76, 0x76, 0x00}; /* "vvvv" */ 112 static const UChar V_UC_STR[] = {0x56, 0x00}; /* "V" */ 113 static const UChar VVVV_UC_STR[] = {0x56, 0x56, 0x56, 0x56, 0x00}; /* "VVVV" */ 114 static const int32_t GMT_ID_LENGTH = 3; 115 116 static UMTX LOCK; 117 static UMTX TZSET_LOCK; 118 static U_NAMESPACE_QUALIFIER TimeZone* DEFAULT_ZONE = NULL; 119 static U_NAMESPACE_QUALIFIER TimeZone* _GMT = NULL; // cf. TimeZone::GMT 120 121 static char TZDATA_VERSION[16]; 122 static UBool TZDataVersionInitialized = FALSE; 123 124 U_CDECL_BEGIN 125 static UBool U_CALLCONV timeZone_cleanup(void) 126 { 127 delete DEFAULT_ZONE; 128 DEFAULT_ZONE = NULL; 129 130 delete _GMT; 131 _GMT = NULL; 132 133 uprv_memset(TZDATA_VERSION, 0, sizeof(TZDATA_VERSION)); 134 TZDataVersionInitialized = FALSE; 135 136 if (LOCK) { 137 umtx_destroy(&LOCK); 138 LOCK = NULL; 139 } 140 if (TZSET_LOCK) { 141 umtx_destroy(&TZSET_LOCK); 142 TZSET_LOCK = NULL; 143 } 144 145 return TRUE; 146 } 147 U_CDECL_END 148 149 U_NAMESPACE_BEGIN 150 151 /** 152 * The Olson data is stored the "zoneinfo" resource bundle. 153 * Sub-resources are organized into three ranges of data: Zones, final 154 * rules, and country tables. There is also a meta-data resource 155 * which has 3 integers: The number of zones, rules, and countries, 156 * respectively. The country count includes the non-country 'Default'. 157 */ 158 static int32_t OLSON_ZONE_COUNT = 0; // count of zones 159 160 /** 161 * Given a pointer to an open "zoneinfo" resource, load up the Olson 162 * meta-data. Return TRUE if successful. 163 */ 164 static UBool getOlsonMeta(const UResourceBundle* top) { 165 if (OLSON_ZONE_COUNT == 0) { 166 UErrorCode ec = U_ZERO_ERROR; 167 UResourceBundle res; 168 ures_initStackObject(&res); 169 ures_getByKey(top, kZONES, &res, &ec); 170 if(U_SUCCESS(ec)) { 171 OLSON_ZONE_COUNT = ures_getSize(&res); 172 U_DEBUG_TZ_MSG(("OZC%d\n",OLSON_ZONE_COUNT)); 173 } 174 ures_close(&res); 175 } 176 return (OLSON_ZONE_COUNT > 0); 177 } 178 179 /** 180 * Load up the Olson meta-data. Return TRUE if successful. 181 */ 182 static UBool getOlsonMeta() { 183 if (OLSON_ZONE_COUNT == 0) { 184 UErrorCode ec = U_ZERO_ERROR; 185 UResourceBundle *top = ures_openDirect(0, kZONEINFO, &ec); 186 if (U_SUCCESS(ec)) { 187 getOlsonMeta(top); 188 } 189 ures_close(top); 190 } 191 return (OLSON_ZONE_COUNT > 0); 192 } 193 194 static int32_t findInStringArray(UResourceBundle* array, const UnicodeString& id, UErrorCode &status) 195 { 196 UnicodeString copy; 197 const UChar *u; 198 int32_t len; 199 200 int32_t start = 0; 201 int32_t limit = ures_getSize(array); 202 int32_t mid; 203 int32_t lastMid = INT32_MAX; 204 if(U_FAILURE(status) || (limit < 1)) { 205 return -1; 206 } 207 U_DEBUG_TZ_MSG(("fisa: Looking for %s, between %d and %d\n", U_DEBUG_TZ_STR(UnicodeString(id).getTerminatedBuffer()), start, limit)); 208 209 for (;;) { 210 mid = (int32_t)((start + limit) / 2); 211 if (lastMid == mid) { /* Have we moved? */ 212 break; /* We haven't moved, and it wasn't found. */ 213 } 214 lastMid = mid; 215 u = ures_getStringByIndex(array, mid, &len, &status); 216 if (U_FAILURE(status)) { 217 break; 218 } 219 U_DEBUG_TZ_MSG(("tz: compare to %s, %d .. [%d] .. %d\n", U_DEBUG_TZ_STR(u), start, mid, limit)); 220 copy.setTo(TRUE, u, len); 221 int r = id.compare(copy); 222 if(r==0) { 223 U_DEBUG_TZ_MSG(("fisa: found at %d\n", mid)); 224 return mid; 225 } else if(r<0) { 226 limit = mid; 227 } else { 228 start = mid; 229 } 230 } 231 U_DEBUG_TZ_MSG(("fisa: not found\n")); 232 return -1; 233 } 234 235 /** 236 * Fetch a specific zone by name. Replaces the getByKey call. 237 * @param top Top timezone resource 238 * @param id Time zone ID 239 * @param oldbundle Bundle for reuse (or NULL). see 'ures_open()' 240 * @return the zone's bundle if found, or undefined if error. Reuses oldbundle. 241 */ 242 static UResourceBundle* getZoneByName(const UResourceBundle* top, const UnicodeString& id, UResourceBundle *oldbundle, UErrorCode& status) { 243 // load the Rules object 244 UResourceBundle *tmp = ures_getByKey(top, kNAMES, NULL, &status); 245 246 // search for the string 247 int32_t idx = findInStringArray(tmp, id, status); 248 249 if((idx == -1) && U_SUCCESS(status)) { 250 // not found 251 status = U_MISSING_RESOURCE_ERROR; 252 //ures_close(oldbundle); 253 //oldbundle = NULL; 254 } else { 255 U_DEBUG_TZ_MSG(("gzbn: oldbundle= size %d, type %d, %s\n", ures_getSize(tmp), ures_getType(tmp), u_errorName(status))); 256 tmp = ures_getByKey(top, kZONES, tmp, &status); // get Zones object from top 257 U_DEBUG_TZ_MSG(("gzbn: loaded ZONES, size %d, type %d, path %s %s\n", ures_getSize(tmp), ures_getType(tmp), ures_getPath(tmp), u_errorName(status))); 258 oldbundle = ures_getByIndex(tmp, idx, oldbundle, &status); // get nth Zone object 259 U_DEBUG_TZ_MSG(("gzbn: loaded z#%d, size %d, type %d, path %s, %s\n", idx, ures_getSize(oldbundle), ures_getType(oldbundle), ures_getPath(oldbundle), u_errorName(status))); 260 } 261 ures_close(tmp); 262 if(U_FAILURE(status)) { 263 //ures_close(oldbundle); 264 return NULL; 265 } else { 266 return oldbundle; 267 } 268 } 269 270 271 UResourceBundle* TimeZone::loadRule(const UResourceBundle* top, const UnicodeString& ruleid, UResourceBundle* oldbundle, UErrorCode& status) { 272 char key[64]; 273 ruleid.extract(0, sizeof(key)-1, key, (int32_t)sizeof(key)-1, US_INV); 274 U_DEBUG_TZ_MSG(("loadRule(%s)\n", key)); 275 UResourceBundle *r = ures_getByKey(top, kRULES, oldbundle, &status); 276 U_DEBUG_TZ_MSG(("loadRule(%s) -> kRULES [%s]\n", key, u_errorName(status))); 277 r = ures_getByKey(r, key, r, &status); 278 U_DEBUG_TZ_MSG(("loadRule(%s) -> item [%s]\n", key, u_errorName(status))); 279 return r; 280 } 281 282 /** 283 * Given an ID, open the appropriate resource for the given time zone. 284 * Dereference aliases if necessary. 285 * @param id zone id 286 * @param res resource, which must be ready for use (initialized but not open) 287 * @param ec input-output error code 288 * @return top-level resource bundle 289 */ 290 static UResourceBundle* openOlsonResource(const UnicodeString& id, 291 UResourceBundle& res, 292 UErrorCode& ec) 293 { 294 #if U_DEBUG_TZ 295 char buf[128]; 296 id.extract(0, sizeof(buf)-1, buf, sizeof(buf), ""); 297 #endif 298 UResourceBundle *top = ures_openDirect(0, kZONEINFO, &ec); 299 U_DEBUG_TZ_MSG(("pre: res sz=%d\n", ures_getSize(&res))); 300 /* &res = */ getZoneByName(top, id, &res, ec); 301 // Dereference if this is an alias. Docs say result should be 1 302 // but it is 0 in 2.8 (?). 303 U_DEBUG_TZ_MSG(("Loading zone '%s' (%s, size %d) - %s\n", buf, ures_getKey((UResourceBundle*)&res), ures_getSize(&res), u_errorName(ec))); 304 if (ures_getType(&res) == URES_INT && getOlsonMeta(top)) { 305 int32_t deref = ures_getInt(&res, &ec) + 0; 306 U_DEBUG_TZ_MSG(("getInt: %s - type is %d\n", u_errorName(ec), ures_getType(&res))); 307 UResourceBundle *ares = ures_getByKey(top, kZONES, NULL, &ec); // dereference Zones section 308 ures_getByIndex(ares, deref, &res, &ec); 309 ures_close(ares); 310 U_DEBUG_TZ_MSG(("alias to #%d (%s) - %s\n", deref, "??", u_errorName(ec))); 311 } else { 312 U_DEBUG_TZ_MSG(("not an alias - size %d\n", ures_getSize(&res))); 313 } 314 U_DEBUG_TZ_MSG(("%s - final status is %s\n", buf, u_errorName(ec))); 315 return top; 316 } 317 318 // ------------------------------------- 319 320 const TimeZone* U_EXPORT2 321 TimeZone::getGMT(void) 322 { 323 UBool needsInit; 324 UMTX_CHECK(&LOCK, (_GMT == NULL), needsInit); /* This is here to prevent race conditions. */ 325 326 // Initialize _GMT independently of other static data; it should 327 // be valid even if we can't load the time zone UDataMemory. 328 if (needsInit) { 329 SimpleTimeZone *tmpGMT = new SimpleTimeZone(0, UnicodeString(TRUE, GMT_ID, GMT_ID_LENGTH)); 330 umtx_lock(&LOCK); 331 if (_GMT == 0) { 332 _GMT = tmpGMT; 333 tmpGMT = NULL; 334 } 335 umtx_unlock(&LOCK); 336 ucln_i18n_registerCleanup(UCLN_I18N_TIMEZONE, timeZone_cleanup); 337 delete tmpGMT; 338 } 339 return _GMT; 340 } 341 342 // ***************************************************************************** 343 // class TimeZone 344 // ***************************************************************************** 345 346 UOBJECT_DEFINE_ABSTRACT_RTTI_IMPLEMENTATION(TimeZone) 347 348 TimeZone::TimeZone() 349 : UObject(), fID() 350 { 351 } 352 353 // ------------------------------------- 354 355 TimeZone::TimeZone(const UnicodeString &id) 356 : UObject(), fID(id) 357 { 358 } 359 360 // ------------------------------------- 361 362 TimeZone::~TimeZone() 363 { 364 } 365 366 // ------------------------------------- 367 368 TimeZone::TimeZone(const TimeZone &source) 369 : UObject(source), fID(source.fID) 370 { 371 } 372 373 // ------------------------------------- 374 375 TimeZone & 376 TimeZone::operator=(const TimeZone &right) 377 { 378 if (this != &right) fID = right.fID; 379 return *this; 380 } 381 382 // ------------------------------------- 383 384 UBool 385 TimeZone::operator==(const TimeZone& that) const 386 { 387 return typeid(*this) == typeid(that) && 388 fID == that.fID; 389 } 390 391 // ------------------------------------- 392 393 TimeZone* U_EXPORT2 394 TimeZone::createTimeZone(const UnicodeString& ID) 395 { 396 /* We first try to lookup the zone ID in our system list. If this 397 * fails, we try to parse it as a custom string GMT[+-]hh:mm. If 398 * all else fails, we return GMT, which is probably not what the 399 * user wants, but at least is a functioning TimeZone object. 400 * 401 * We cannot return NULL, because that would break compatibility 402 * with the JDK. 403 */ 404 TimeZone* result = createSystemTimeZone(ID); 405 406 if (result == 0) { 407 U_DEBUG_TZ_MSG(("failed to load system time zone with id - falling to custom")); 408 result = createCustomTimeZone(ID); 409 } 410 if (result == 0) { 411 U_DEBUG_TZ_MSG(("failed to load time zone with id - falling to GMT")); 412 const TimeZone* temptz = getGMT(); 413 if (temptz == NULL) { 414 result = NULL; 415 } else { 416 result = temptz->clone(); 417 } 418 } 419 return result; 420 } 421 422 /** 423 * Lookup the given name in our system zone table. If found, 424 * instantiate a new zone of that name and return it. If not 425 * found, return 0. 426 */ 427 TimeZone* 428 TimeZone::createSystemTimeZone(const UnicodeString& id) { 429 TimeZone* z = 0; 430 UErrorCode ec = U_ZERO_ERROR; 431 UResourceBundle res; 432 ures_initStackObject(&res); 433 U_DEBUG_TZ_MSG(("pre-err=%s\n", u_errorName(ec))); 434 UResourceBundle *top = openOlsonResource(id, res, ec); 435 U_DEBUG_TZ_MSG(("post-err=%s\n", u_errorName(ec))); 436 if (U_SUCCESS(ec)) { 437 z = new OlsonTimeZone(top, &res, ec); 438 if (z) { 439 z->setID(id); 440 } else { 441 U_DEBUG_TZ_MSG(("cstz: olson time zone failed to initialize - err %s\n", u_errorName(ec))); 442 } 443 } 444 ures_close(&res); 445 ures_close(top); 446 if (U_FAILURE(ec)) { 447 U_DEBUG_TZ_MSG(("cstz: failed to create, err %s\n", u_errorName(ec))); 448 delete z; 449 z = 0; 450 } 451 return z; 452 } 453 454 // ------------------------------------- 455 456 /** 457 * Initialize DEFAULT_ZONE from the system default time zone. The 458 * caller should confirm that DEFAULT_ZONE is NULL before calling. 459 * Upon return, DEFAULT_ZONE will not be NULL, unless operator new() 460 * returns NULL. 461 * 462 * Must be called OUTSIDE mutex. 463 */ 464 void 465 TimeZone::initDefault() 466 { 467 // We access system timezone data through TPlatformUtilities, 468 // including tzset(), timezone, and tzname[]. 469 int32_t rawOffset = 0; 470 const char *hostID; 471 472 // First, try to create a system timezone, based 473 // on the string ID in tzname[0]. 474 { 475 // NOTE: Local mutex here. TimeZone mutex below 476 // mutexed to avoid threading issues in the platform functions. 477 // Some of the locale/timezone OS functions may not be thread safe, 478 // so the intent is that any setting from anywhere within ICU 479 // happens while the ICU mutex is held. 480 // The operating system might actually use ICU to implement timezones. 481 // So we may have ICU calling ICU here, like on AIX. 482 // In order to prevent a double lock of a non-reentrant mutex in a 483 // different part of ICU, we use TZSET_LOCK to allow only one instance 484 // of ICU to query these thread unsafe OS functions at any given time. 485 Mutex lock(&TZSET_LOCK); 486 487 ucln_i18n_registerCleanup(UCLN_I18N_TIMEZONE, timeZone_cleanup); 488 uprv_tzset(); // Initialize tz... system data 489 490 // Get the timezone ID from the host. This function should do 491 // any required host-specific remapping; e.g., on Windows this 492 // function maps the Date and Time control panel setting to an 493 // ICU timezone ID. 494 hostID = uprv_tzname(0); 495 496 // Invert sign because UNIX semantics are backwards 497 rawOffset = uprv_timezone() * -U_MILLIS_PER_SECOND; 498 } 499 500 UBool initialized; 501 UMTX_CHECK(&LOCK, (DEFAULT_ZONE != NULL), initialized); 502 if (initialized) { 503 /* Hrmph? Either a race condition happened, or tzset initialized ICU. */ 504 return; 505 } 506 507 TimeZone* default_zone = NULL; 508 509 /* Make sure that the string is NULL terminated to prevent BoundsChecker/Purify warnings. */ 510 UnicodeString hostStrID(hostID, -1, US_INV); 511 hostStrID.append((UChar)0); 512 hostStrID.truncate(hostStrID.length()-1); 513 default_zone = createSystemTimeZone(hostStrID); 514 515 #ifdef U_WINDOWS 516 // hostID points to a heap-allocated location on Windows. 517 uprv_free(const_cast<char *>(hostID)); 518 #endif 519 520 int32_t hostIDLen = hostStrID.length(); 521 if (default_zone != NULL && rawOffset != default_zone->getRawOffset() 522 && (3 <= hostIDLen && hostIDLen <= 4)) 523 { 524 // Uh oh. This probably wasn't a good id. 525 // It was probably an ambiguous abbreviation 526 delete default_zone; 527 default_zone = NULL; 528 } 529 530 // Construct a fixed standard zone with the host's ID 531 // and raw offset. 532 if (default_zone == NULL) { 533 default_zone = new SimpleTimeZone(rawOffset, hostStrID); 534 } 535 536 // If we _still_ don't have a time zone, use GMT. 537 if (default_zone == NULL) { 538 const TimeZone* temptz = getGMT(); 539 // If we can't use GMT, get out. 540 if (temptz == NULL) { 541 return; 542 } 543 default_zone = temptz->clone(); 544 } 545 546 // If DEFAULT_ZONE is still NULL, set it up. 547 umtx_lock(&LOCK); 548 if (DEFAULT_ZONE == NULL) { 549 DEFAULT_ZONE = default_zone; 550 default_zone = NULL; 551 ucln_i18n_registerCleanup(UCLN_I18N_TIMEZONE, timeZone_cleanup); 552 } 553 umtx_unlock(&LOCK); 554 555 delete default_zone; 556 } 557 558 // ------------------------------------- 559 560 TimeZone* U_EXPORT2 561 TimeZone::createDefault() 562 { 563 /* This is here to prevent race conditions. */ 564 UBool needsInit; 565 UMTX_CHECK(&LOCK, (DEFAULT_ZONE == NULL), needsInit); 566 if (needsInit) { 567 initDefault(); 568 } 569 570 Mutex lock(&LOCK); // In case adoptDefault is called 571 return (DEFAULT_ZONE != NULL) ? DEFAULT_ZONE->clone() : NULL; 572 } 573 574 // ------------------------------------- 575 576 void U_EXPORT2 577 TimeZone::adoptDefault(TimeZone* zone) 578 { 579 if (zone != NULL) 580 { 581 TimeZone* old = NULL; 582 583 umtx_lock(&LOCK); 584 old = DEFAULT_ZONE; 585 DEFAULT_ZONE = zone; 586 umtx_unlock(&LOCK); 587 588 delete old; 589 ucln_i18n_registerCleanup(UCLN_I18N_TIMEZONE, timeZone_cleanup); 590 } 591 } 592 // ------------------------------------- 593 594 void U_EXPORT2 595 TimeZone::setDefault(const TimeZone& zone) 596 { 597 adoptDefault(zone.clone()); 598 } 599 600 //---------------------------------------------------------------------- 601 602 /** 603 * This is the default implementation for subclasses that do not 604 * override this method. This implementation calls through to the 605 * 8-argument getOffset() method after suitable computations, and 606 * correctly adjusts GMT millis to local millis when necessary. 607 */ 608 void TimeZone::getOffset(UDate date, UBool local, int32_t& rawOffset, 609 int32_t& dstOffset, UErrorCode& ec) const { 610 if (U_FAILURE(ec)) { 611 return; 612 } 613 614 rawOffset = getRawOffset(); 615 if (!local) { 616 date += rawOffset; // now in local standard millis 617 } 618 619 // When local == TRUE, date might not be in local standard 620 // millis. getOffset taking 7 parameters used here assume 621 // the given time in day is local standard time. 622 // At STD->DST transition, there is a range of time which 623 // does not exist. When 'date' is in this time range 624 // (and local == TRUE), this method interprets the specified 625 // local time as DST. At DST->STD transition, there is a 626 // range of time which occurs twice. In this case, this 627 // method interprets the specified local time as STD. 628 // To support the behavior above, we need to call getOffset 629 // (with 7 args) twice when local == true and DST is 630 // detected in the initial call. 631 for (int32_t pass=0; ; ++pass) { 632 int32_t year, month, dom, dow; 633 double day = uprv_floor(date / U_MILLIS_PER_DAY); 634 int32_t millis = (int32_t) (date - day * U_MILLIS_PER_DAY); 635 636 Grego::dayToFields(day, year, month, dom, dow); 637 638 dstOffset = getOffset(GregorianCalendar::AD, year, month, dom, 639 (uint8_t) dow, millis, 640 Grego::monthLength(year, month), 641 ec) - rawOffset; 642 643 // Recompute if local==TRUE, dstOffset!=0. 644 if (pass!=0 || !local || dstOffset == 0) { 645 break; 646 } 647 // adjust to local standard millis 648 date -= dstOffset; 649 } 650 } 651 652 // ------------------------------------- 653 654 // New available IDs API as of ICU 2.4. Uses StringEnumeration API. 655 656 class TZEnumeration : public StringEnumeration { 657 private: 658 659 // Map into to zones. Our results are zone[map[i]] for 660 // i=0..len-1, where zone[i] is the i-th Olson zone. If map==NULL 661 // then our results are zone[i] for i=0..len-1. Len will be zero 662 // iff the zone data could not be loaded. 663 int32_t* map; 664 int32_t len; 665 int32_t pos; 666 667 UBool getID(int32_t i) { 668 UErrorCode ec = U_ZERO_ERROR; 669 int32_t idLen = 0; 670 const UChar* id = NULL; 671 UResourceBundle *top = ures_openDirect(0, kZONEINFO, &ec); 672 top = ures_getByKey(top, kNAMES, top, &ec); // dereference Zones section 673 id = ures_getStringByIndex(top, i, &idLen, &ec); 674 if(U_FAILURE(ec)) { 675 unistr.truncate(0); 676 } 677 else { 678 unistr.fastCopyFrom(UnicodeString(TRUE, id, idLen)); 679 } 680 ures_close(top); 681 return U_SUCCESS(ec); 682 } 683 684 public: 685 TZEnumeration() : map(NULL), len(0), pos(0) { 686 if (getOlsonMeta()) { 687 len = OLSON_ZONE_COUNT; 688 } 689 } 690 691 TZEnumeration(int32_t rawOffset) : map(NULL), len(0), pos(0) { 692 if (!getOlsonMeta()) { 693 return; 694 } 695 696 // Allocate more space than we'll need. The end of the array will 697 // be blank. 698 map = (int32_t*)uprv_malloc(OLSON_ZONE_COUNT * sizeof(int32_t)); 699 if (map == 0) { 700 return; 701 } 702 703 uprv_memset(map, 0, sizeof(int32_t) * OLSON_ZONE_COUNT); 704 705 UnicodeString s; 706 for (int32_t i=0; i<OLSON_ZONE_COUNT; ++i) { 707 if (getID(i)) { 708 // This is VERY inefficient. 709 TimeZone* z = TimeZone::createTimeZone(unistr); 710 // Make sure we get back the ID we wanted (if the ID is 711 // invalid we get back GMT). 712 if (z != 0 && z->getID(s) == unistr && 713 z->getRawOffset() == rawOffset) { 714 map[len++] = i; 715 } 716 delete z; 717 } 718 } 719 } 720 721 TZEnumeration(const char* country) : map(NULL), len(0), pos(0) { 722 if (!getOlsonMeta()) { 723 return; 724 } 725 726 UErrorCode ec = U_ZERO_ERROR; 727 UResourceBundle *res = ures_openDirect(0, kZONEINFO, &ec); 728 ures_getByKey(res, kREGIONS, res, &ec); 729 if (U_SUCCESS(ec) && ures_getType(res) == URES_ARRAY) { 730 UChar uCountry[] = {0, 0, 0, 0}; 731 if (country) { 732 u_charsToUChars(country, uCountry, 2); 733 } else { 734 u_strcpy(uCountry, WORLD); 735 } 736 737 // count matches 738 int32_t count = 0; 739 int32_t i; 740 const UChar *region; 741 for (i = 0; i < ures_getSize(res); i++) { 742 region = ures_getStringByIndex(res, i, NULL, &ec); 743 if (U_FAILURE(ec)) { 744 break; 745 } 746 if (u_strcmp(uCountry, region) == 0) { 747 count++; 748 } 749 } 750 751 if (count > 0) { 752 map = (int32_t*)uprv_malloc(sizeof(int32_t) * count); 753 if (map != NULL) { 754 int32_t idx = 0; 755 for (i = 0; i < ures_getSize(res); i++) { 756 region = ures_getStringByIndex(res, i, NULL, &ec); 757 if (U_FAILURE(ec)) { 758 break; 759 } 760 if (u_strcmp(uCountry, region) == 0) { 761 map[idx++] = i; 762 } 763 } 764 if (U_SUCCESS(ec)) { 765 len = count; 766 } else { 767 uprv_free(map); 768 map = NULL; 769 } 770 } else { 771 U_DEBUG_TZ_MSG(("Failed to load tz for region %s: %s\n", country, u_errorName(ec))); 772 } 773 } 774 } 775 ures_close(res); 776 } 777 778 TZEnumeration(const TZEnumeration &other) : StringEnumeration(), map(NULL), len(0), pos(0) { 779 if(other.len > 0) { 780 if(other.map != NULL) { 781 map = (int32_t *)uprv_malloc(other.len * sizeof(int32_t)); 782 if(map != NULL) { 783 len = other.len; 784 uprv_memcpy(map, other.map, len * sizeof(int32_t)); 785 pos = other.pos; 786 } 787 } else { 788 len = other.len; 789 pos = other.pos; 790 } 791 } 792 } 793 794 virtual ~TZEnumeration() { 795 uprv_free(map); 796 } 797 798 virtual StringEnumeration *clone() const { 799 return new TZEnumeration(*this); 800 } 801 802 virtual int32_t count(UErrorCode& status) const { 803 return U_FAILURE(status) ? 0 : len; 804 } 805 806 virtual const UnicodeString* snext(UErrorCode& status) { 807 if (U_SUCCESS(status) && pos < len) { 808 getID((map == 0) ? pos : map[pos]); 809 ++pos; 810 return &unistr; 811 } 812 return 0; 813 } 814 815 virtual void reset(UErrorCode& /*status*/) { 816 pos = 0; 817 } 818 819 public: 820 static UClassID U_EXPORT2 getStaticClassID(void); 821 virtual UClassID getDynamicClassID(void) const; 822 }; 823 824 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(TZEnumeration) 825 826 StringEnumeration* U_EXPORT2 827 TimeZone::createEnumeration() { 828 return new TZEnumeration(); 829 } 830 831 StringEnumeration* U_EXPORT2 832 TimeZone::createEnumeration(int32_t rawOffset) { 833 return new TZEnumeration(rawOffset); 834 } 835 836 StringEnumeration* U_EXPORT2 837 TimeZone::createEnumeration(const char* country) { 838 return new TZEnumeration(country); 839 } 840 841 // --------------------------------------- 842 843 int32_t U_EXPORT2 844 TimeZone::countEquivalentIDs(const UnicodeString& id) { 845 int32_t result = 0; 846 UErrorCode ec = U_ZERO_ERROR; 847 UResourceBundle res; 848 ures_initStackObject(&res); 849 U_DEBUG_TZ_MSG(("countEquivalentIDs..\n")); 850 UResourceBundle *top = openOlsonResource(id, res, ec); 851 if (U_SUCCESS(ec)) { 852 UResourceBundle r; 853 ures_initStackObject(&r); 854 ures_getByKey(&res, kLINKS, &r, &ec); 855 ures_getIntVector(&r, &result, &ec); 856 ures_close(&r); 857 } 858 ures_close(&res); 859 ures_close(top); 860 return result; 861 } 862 863 // --------------------------------------- 864 865 const UnicodeString U_EXPORT2 866 TimeZone::getEquivalentID(const UnicodeString& id, int32_t index) { 867 U_DEBUG_TZ_MSG(("gEI(%d)\n", index)); 868 UnicodeString result; 869 UErrorCode ec = U_ZERO_ERROR; 870 UResourceBundle res; 871 ures_initStackObject(&res); 872 UResourceBundle *top = openOlsonResource(id, res, ec); 873 int32_t zone = -1; 874 if (U_SUCCESS(ec)) { 875 UResourceBundle r; 876 ures_initStackObject(&r); 877 int32_t size; 878 ures_getByKey(&res, kLINKS, &r, &ec); 879 const int32_t* v = ures_getIntVector(&r, &size, &ec); 880 if (U_SUCCESS(ec)) { 881 if (index >= 0 && index < size && getOlsonMeta()) { 882 zone = v[index]; 883 } 884 } 885 ures_close(&r); 886 } 887 ures_close(&res); 888 if (zone >= 0) { 889 UResourceBundle *ares = ures_getByKey(top, kNAMES, NULL, &ec); // dereference Zones section 890 if (U_SUCCESS(ec)) { 891 int32_t idLen = 0; 892 const UChar* id = ures_getStringByIndex(ares, zone, &idLen, &ec); 893 result.fastCopyFrom(UnicodeString(TRUE, id, idLen)); 894 U_DEBUG_TZ_MSG(("gei(%d) -> %d, len%d, %s\n", index, zone, result.length(), u_errorName(ec))); 895 } 896 ures_close(ares); 897 } 898 ures_close(top); 899 #if defined(U_DEBUG_TZ) 900 if(result.length() ==0) { 901 U_DEBUG_TZ_MSG(("equiv [__, #%d] -> 0 (%s)\n", index, u_errorName(ec))); 902 } 903 #endif 904 return result; 905 } 906 907 // --------------------------------------- 908 909 // These two methods are used by ZoneMeta class only. 910 911 const UChar* 912 TimeZone::dereferOlsonLink(const UnicodeString& id) { 913 const UChar *result = NULL; 914 UErrorCode ec = U_ZERO_ERROR; 915 UResourceBundle *rb = ures_openDirect(NULL, kZONEINFO, &ec); 916 917 // resolve zone index by name 918 UResourceBundle *names = ures_getByKey(rb, kNAMES, NULL, &ec); 919 int32_t idx = findInStringArray(names, id, ec); 920 result = ures_getStringByIndex(names, idx, NULL, &ec); 921 922 // open the zone bundle by index 923 ures_getByKey(rb, kZONES, rb, &ec); 924 ures_getByIndex(rb, idx, rb, &ec); 925 926 if (U_SUCCESS(ec)) { 927 if (ures_getType(rb) == URES_INT) { 928 // this is a link - dereference the link 929 int32_t deref = ures_getInt(rb, &ec); 930 const UChar* tmp = ures_getStringByIndex(names, deref, NULL, &ec); 931 if (U_SUCCESS(ec)) { 932 result = tmp; 933 } 934 } 935 } 936 937 ures_close(names); 938 ures_close(rb); 939 940 return result; 941 } 942 943 const UChar* 944 TimeZone::getRegion(const UnicodeString& id) { 945 const UChar *result = WORLD; 946 UErrorCode ec = U_ZERO_ERROR; 947 UResourceBundle *rb = ures_openDirect(NULL, kZONEINFO, &ec); 948 949 // resolve zone index by name 950 UResourceBundle *res = ures_getByKey(rb, kNAMES, NULL, &ec); 951 int32_t idx = findInStringArray(res, id, ec); 952 953 // get region mapping 954 ures_getByKey(rb, kREGIONS, res, &ec); 955 const UChar *tmp = ures_getStringByIndex(res, idx, NULL, &ec); 956 if (U_SUCCESS(ec)) { 957 result = tmp; 958 } 959 960 ures_close(res); 961 ures_close(rb); 962 963 return result; 964 } 965 966 // --------------------------------------- 967 968 969 UnicodeString& 970 TimeZone::getDisplayName(UnicodeString& result) const 971 { 972 return getDisplayName(FALSE,LONG,Locale::getDefault(), result); 973 } 974 975 UnicodeString& 976 TimeZone::getDisplayName(const Locale& locale, UnicodeString& result) const 977 { 978 return getDisplayName(FALSE, LONG, locale, result); 979 } 980 981 UnicodeString& 982 TimeZone::getDisplayName(UBool daylight, EDisplayType style, UnicodeString& result) const 983 { 984 return getDisplayName(daylight,style, Locale::getDefault(), result); 985 } 986 //-------------------------------------- 987 int32_t 988 TimeZone::getDSTSavings()const { 989 if (useDaylightTime()) { 990 return 3600000; 991 } 992 return 0; 993 } 994 //--------------------------------------- 995 UnicodeString& 996 TimeZone::getDisplayName(UBool daylight, EDisplayType style, const Locale& locale, UnicodeString& result) const 997 { 998 // SRL TODO: cache the SDF, just like java. 999 UErrorCode status = U_ZERO_ERROR; 1000 #ifdef U_DEBUG_TZ 1001 char buf[128]; 1002 fID.extract(0, sizeof(buf)-1, buf, sizeof(buf), ""); 1003 #endif 1004 1005 // select the proper format string 1006 UnicodeString pat; 1007 switch(style){ 1008 case LONG: 1009 pat = ZZZZ_STR; 1010 break; 1011 case SHORT_GENERIC: 1012 pat = V_STR; 1013 break; 1014 case LONG_GENERIC: 1015 pat = VVVV_STR; 1016 break; 1017 case SHORT_GMT: 1018 pat = Z_UC_STR; 1019 break; 1020 case LONG_GMT: 1021 pat = ZZZZ_UC_STR; 1022 break; 1023 case SHORT_COMMONLY_USED: 1024 //pat = V_UC_STR; 1025 pat = Z_STR; 1026 break; 1027 case GENERIC_LOCATION: 1028 pat = VVVV_UC_STR; 1029 break; 1030 default: // SHORT 1031 //pat = Z_STR; 1032 pat = V_UC_STR; 1033 break; 1034 } 1035 1036 SimpleDateFormat format(pat, locale, status); 1037 U_DEBUG_TZ_MSG(("getDisplayName(%s)\n", buf)); 1038 if(!U_SUCCESS(status)) 1039 { 1040 #ifdef U_DEBUG_TZ 1041 char buf2[128]; 1042 result.extract(0, sizeof(buf2)-1, buf2, sizeof(buf2), ""); 1043 U_DEBUG_TZ_MSG(("getDisplayName(%s) -> %s\n", buf, buf2)); 1044 #endif 1045 return result.remove(); 1046 } 1047 1048 UDate d = Calendar::getNow(); 1049 int32_t rawOffset; 1050 int32_t dstOffset; 1051 this->getOffset(d, FALSE, rawOffset, dstOffset, status); 1052 if (U_FAILURE(status)) { 1053 return result.remove(); 1054 } 1055 1056 if ((daylight && dstOffset != 0) || 1057 (!daylight && dstOffset == 0) || 1058 (style == SHORT_GENERIC) || 1059 (style == LONG_GENERIC) 1060 ) { 1061 // Current time and the request (daylight / not daylight) agree. 1062 format.setTimeZone(*this); 1063 return format.format(d, result); 1064 } 1065 1066 // Create a new SimpleTimeZone as a stand-in for this zone; the 1067 // stand-in will have no DST, or DST during July, but the same ID and offset, 1068 // and hence the same display name. 1069 // We don't cache these because they're small and cheap to create. 1070 UnicodeString tempID; 1071 getID(tempID); 1072 SimpleTimeZone *tz = NULL; 1073 if(daylight && useDaylightTime()){ 1074 // The display name for daylight saving time was requested, but currently not in DST 1075 // Set a fixed date (July 1) in this Gregorian year 1076 GregorianCalendar cal(*this, status); 1077 if (U_FAILURE(status)) { 1078 return result.remove(); 1079 } 1080 cal.set(UCAL_MONTH, UCAL_JULY); 1081 cal.set(UCAL_DATE, 1); 1082 1083 // Get July 1 date 1084 d = cal.getTime(status); 1085 1086 // Check if it is in DST 1087 if (cal.get(UCAL_DST_OFFSET, status) == 0) { 1088 // We need to create a fake time zone 1089 tz = new SimpleTimeZone(rawOffset, tempID, 1090 UCAL_JUNE, 1, 0, 0, 1091 UCAL_AUGUST, 1, 0, 0, 1092 getDSTSavings(), status); 1093 if (U_FAILURE(status) || tz == NULL) { 1094 if (U_SUCCESS(status)) { 1095 status = U_MEMORY_ALLOCATION_ERROR; 1096 } 1097 return result.remove(); 1098 } 1099 format.adoptTimeZone(tz); 1100 } else { 1101 format.setTimeZone(*this); 1102 } 1103 } else { 1104 // The display name for standard time was requested, but currently in DST 1105 // or display name for daylight saving time was requested, but this zone no longer 1106 // observes DST. 1107 tz = new SimpleTimeZone(rawOffset, tempID); 1108 if (U_FAILURE(status) || tz == NULL) { 1109 if (U_SUCCESS(status)) { 1110 status = U_MEMORY_ALLOCATION_ERROR; 1111 } 1112 return result.remove(); 1113 } 1114 format.adoptTimeZone(tz); 1115 } 1116 1117 format.format(d, result, status); 1118 return result; 1119 } 1120 1121 /** 1122 * Parse a custom time zone identifier and return a corresponding zone. 1123 * @param id a string of the form GMT[+-]hh:mm, GMT[+-]hhmm, or 1124 * GMT[+-]hh. 1125 * @return a newly created SimpleTimeZone with the given offset and 1126 * no Daylight Savings Time, or null if the id cannot be parsed. 1127 */ 1128 TimeZone* 1129 TimeZone::createCustomTimeZone(const UnicodeString& id) 1130 { 1131 int32_t sign, hour, min, sec; 1132 if (parseCustomID(id, sign, hour, min, sec)) { 1133 UnicodeString customID; 1134 formatCustomID(hour, min, sec, (sign < 0), customID); 1135 int32_t offset = sign * ((hour * 60 + min) * 60 + sec) * 1000; 1136 return new SimpleTimeZone(offset, customID); 1137 } 1138 return NULL; 1139 } 1140 1141 UnicodeString& 1142 TimeZone::getCustomID(const UnicodeString& id, UnicodeString& normalized, UErrorCode& status) { 1143 normalized.remove(); 1144 if (U_FAILURE(status)) { 1145 return normalized; 1146 } 1147 int32_t sign, hour, min, sec; 1148 if (parseCustomID(id, sign, hour, min, sec)) { 1149 formatCustomID(hour, min, sec, (sign < 0), normalized); 1150 } 1151 return normalized; 1152 } 1153 1154 UBool 1155 TimeZone::parseCustomID(const UnicodeString& id, int32_t& sign, 1156 int32_t& hour, int32_t& min, int32_t& sec) { 1157 static const int32_t kParseFailed = -99999; 1158 1159 NumberFormat* numberFormat = 0; 1160 UnicodeString idUppercase = id; 1161 idUppercase.toUpper(); 1162 1163 if (id.length() > GMT_ID_LENGTH && 1164 idUppercase.startsWith(GMT_ID)) 1165 { 1166 ParsePosition pos(GMT_ID_LENGTH); 1167 sign = 1; 1168 hour = 0; 1169 min = 0; 1170 sec = 0; 1171 1172 if (id[pos.getIndex()] == MINUS /*'-'*/) { 1173 sign = -1; 1174 } else if (id[pos.getIndex()] != PLUS /*'+'*/) { 1175 return FALSE; 1176 } 1177 pos.setIndex(pos.getIndex() + 1); 1178 1179 UErrorCode success = U_ZERO_ERROR; 1180 numberFormat = NumberFormat::createInstance(success); 1181 if(U_FAILURE(success)){ 1182 return FALSE; 1183 } 1184 numberFormat->setParseIntegerOnly(TRUE); 1185 1186 // Look for either hh:mm, hhmm, or hh 1187 int32_t start = pos.getIndex(); 1188 Formattable n(kParseFailed); 1189 numberFormat->parse(id, n, pos); 1190 if (pos.getIndex() == start) { 1191 delete numberFormat; 1192 return FALSE; 1193 } 1194 hour = n.getLong(); 1195 1196 if (pos.getIndex() < id.length()) { 1197 if (pos.getIndex() - start > 2 1198 || id[pos.getIndex()] != COLON) { 1199 delete numberFormat; 1200 return FALSE; 1201 } 1202 // hh:mm 1203 pos.setIndex(pos.getIndex() + 1); 1204 int32_t oldPos = pos.getIndex(); 1205 n.setLong(kParseFailed); 1206 numberFormat->parse(id, n, pos); 1207 if ((pos.getIndex() - oldPos) != 2) { 1208 // must be 2 digits 1209 delete numberFormat; 1210 return FALSE; 1211 } 1212 min = n.getLong(); 1213 if (pos.getIndex() < id.length()) { 1214 if (id[pos.getIndex()] != COLON) { 1215 delete numberFormat; 1216 return FALSE; 1217 } 1218 // [:ss] 1219 pos.setIndex(pos.getIndex() + 1); 1220 oldPos = pos.getIndex(); 1221 n.setLong(kParseFailed); 1222 numberFormat->parse(id, n, pos); 1223 if (pos.getIndex() != id.length() 1224 || (pos.getIndex() - oldPos) != 2) { 1225 delete numberFormat; 1226 return FALSE; 1227 } 1228 sec = n.getLong(); 1229 } 1230 } else { 1231 // Supported formats are below - 1232 // 1233 // HHmmss 1234 // Hmmss 1235 // HHmm 1236 // Hmm 1237 // HH 1238 // H 1239 1240 int32_t length = pos.getIndex() - start; 1241 if (length <= 0 || 6 < length) { 1242 // invalid length 1243 delete numberFormat; 1244 return FALSE; 1245 } 1246 switch (length) { 1247 case 1: 1248 case 2: 1249 // already set to hour 1250 break; 1251 case 3: 1252 case 4: 1253 min = hour % 100; 1254 hour /= 100; 1255 break; 1256 case 5: 1257 case 6: 1258 sec = hour % 100; 1259 min = (hour/100) % 100; 1260 hour /= 10000; 1261 break; 1262 } 1263 } 1264 1265 delete numberFormat; 1266 1267 if (hour > kMAX_CUSTOM_HOUR || min > kMAX_CUSTOM_MIN || sec > kMAX_CUSTOM_SEC) { 1268 return FALSE; 1269 } 1270 return TRUE; 1271 } 1272 return FALSE; 1273 } 1274 1275 UnicodeString& 1276 TimeZone::formatCustomID(int32_t hour, int32_t min, int32_t sec, 1277 UBool negative, UnicodeString& id) { 1278 // Create time zone ID - GMT[+|-]hhmm[ss] 1279 id.setTo(GMT_ID); 1280 if (hour | min | sec) { 1281 if (negative) { 1282 id += (UChar)MINUS; 1283 } else { 1284 id += (UChar)PLUS; 1285 } 1286 1287 if (hour < 10) { 1288 id += (UChar)ZERO_DIGIT; 1289 } else { 1290 id += (UChar)(ZERO_DIGIT + hour/10); 1291 } 1292 id += (UChar)(ZERO_DIGIT + hour%10); 1293 id += (UChar)COLON; 1294 if (min < 10) { 1295 id += (UChar)ZERO_DIGIT; 1296 } else { 1297 id += (UChar)(ZERO_DIGIT + min/10); 1298 } 1299 id += (UChar)(ZERO_DIGIT + min%10); 1300 1301 if (sec) { 1302 id += (UChar)COLON; 1303 if (sec < 10) { 1304 id += (UChar)ZERO_DIGIT; 1305 } else { 1306 id += (UChar)(ZERO_DIGIT + sec/10); 1307 } 1308 id += (UChar)(ZERO_DIGIT + sec%10); 1309 } 1310 } 1311 return id; 1312 } 1313 1314 1315 UBool 1316 TimeZone::hasSameRules(const TimeZone& other) const 1317 { 1318 return (getRawOffset() == other.getRawOffset() && 1319 useDaylightTime() == other.useDaylightTime()); 1320 } 1321 1322 const char* 1323 TimeZone::getTZDataVersion(UErrorCode& status) 1324 { 1325 /* This is here to prevent race conditions. */ 1326 UBool needsInit; 1327 UMTX_CHECK(&LOCK, !TZDataVersionInitialized, needsInit); 1328 if (needsInit) { 1329 int32_t len = 0; 1330 UResourceBundle *bundle = ures_openDirect(NULL, kZONEINFO, &status); 1331 const UChar *tzver = ures_getStringByKey(bundle, kTZVERSION, 1332 &len, &status); 1333 1334 if (U_SUCCESS(status)) { 1335 if (len >= (int32_t)sizeof(TZDATA_VERSION)) { 1336 // Ensure that there is always space for a trailing nul in TZDATA_VERSION 1337 len = sizeof(TZDATA_VERSION) - 1; 1338 } 1339 umtx_lock(&LOCK); 1340 if (!TZDataVersionInitialized) { 1341 u_UCharsToChars(tzver, TZDATA_VERSION, len); 1342 TZDataVersionInitialized = TRUE; 1343 } 1344 umtx_unlock(&LOCK); 1345 ucln_i18n_registerCleanup(UCLN_I18N_TIMEZONE, timeZone_cleanup); 1346 } 1347 1348 ures_close(bundle); 1349 } 1350 if (U_FAILURE(status)) { 1351 return NULL; 1352 } 1353 return (const char*)TZDATA_VERSION; 1354 } 1355 1356 UnicodeString& 1357 TimeZone::getCanonicalID(const UnicodeString& id, UnicodeString& canonicalID, UErrorCode& status) 1358 { 1359 UBool isSystemID = FALSE; 1360 return getCanonicalID(id, canonicalID, isSystemID, status); 1361 } 1362 1363 UnicodeString& 1364 TimeZone::getCanonicalID(const UnicodeString& id, UnicodeString& canonicalID, UBool& isSystemID, 1365 UErrorCode& status) 1366 { 1367 canonicalID.remove(); 1368 isSystemID = FALSE; 1369 if (U_FAILURE(status)) { 1370 return canonicalID; 1371 } 1372 ZoneMeta::getCanonicalSystemID(id, canonicalID, status); 1373 if (U_SUCCESS(status)) { 1374 isSystemID = TRUE; 1375 } else { 1376 // Not a system ID 1377 status = U_ZERO_ERROR; 1378 getCustomID(id, canonicalID, status); 1379 } 1380 return canonicalID; 1381 } 1382 1383 U_NAMESPACE_END 1384 1385 #endif /* #if !UCONFIG_NO_FORMATTING */ 1386 1387 //eof 1388
