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