1// © 2016 and later: Unicode, Inc. and others.
2// License & terms of use: http://www.unicode.org/copyright.html
3/*
4*******************************************************************************
5* Copyright (C) 2007-2014, International Business Machines Corporation and
6* others. All Rights Reserved.
7*******************************************************************************
8*/
9
10#include "unicode/utypes.h"
11
12#if !UCONFIG_NO_FORMATTING
13
14#include "zonemeta.h"
15
16#include "unicode/timezone.h"
17#include "unicode/ustring.h"
18#include "unicode/putil.h"
19#include "unicode/simpletz.h"
20#include "unicode/strenum.h"
21#include "umutex.h"
22#include "uvector.h"
23#include "cmemory.h"
24#include "gregoimp.h"
25#include "cstring.h"
26#include "ucln_in.h"
27#include "uassert.h"
28#include "uresimp.h"
29#include "uhash.h"
30#include "olsontz.h"
31#include "uinvchar.h"
32
33static icu::UMutex gZoneMetaLock;
34
35// CLDR Canonical ID mapping table
36static UHashtable *gCanonicalIDCache = NULL;
37static icu::UInitOnce gCanonicalIDCacheInitOnce = U_INITONCE_INITIALIZER;
38
39// Metazone mapping table
40static UHashtable *gOlsonToMeta = NULL;
41static icu::UInitOnce gOlsonToMetaInitOnce = U_INITONCE_INITIALIZER;
42
43// Available metazone IDs vector and table
44static icu::UVector *gMetaZoneIDs = NULL;
45static UHashtable *gMetaZoneIDTable = NULL;
46static icu::UInitOnce gMetaZoneIDsInitOnce = U_INITONCE_INITIALIZER;
47
48// Country info vectors
49static icu::UVector *gSingleZoneCountries = NULL;
50static icu::UVector *gMultiZonesCountries = NULL;
51static icu::UInitOnce gCountryInfoVectorsInitOnce = U_INITONCE_INITIALIZER;
52
53U_CDECL_BEGIN
54
55/**
56 * Cleanup callback func
57 */
58static UBool U_CALLCONV zoneMeta_cleanup(void)
59{
60 if (gCanonicalIDCache != NULL) {
61 uhash_close(gCanonicalIDCache);
62 gCanonicalIDCache = NULL;
63 }
64 gCanonicalIDCacheInitOnce.reset();
65
66 if (gOlsonToMeta != NULL) {
67 uhash_close(gOlsonToMeta);
68 gOlsonToMeta = NULL;
69 }
70 gOlsonToMetaInitOnce.reset();
71
72 if (gMetaZoneIDTable != NULL) {
73 uhash_close(gMetaZoneIDTable);
74 gMetaZoneIDTable = NULL;
75 }
76 // delete after closing gMetaZoneIDTable, because it holds
77 // value objects held by the hashtable
78 delete gMetaZoneIDs;
79 gMetaZoneIDs = NULL;
80 gMetaZoneIDsInitOnce.reset();
81
82 delete gSingleZoneCountries;
83 gSingleZoneCountries = NULL;
84 delete gMultiZonesCountries;
85 gMultiZonesCountries = NULL;
86 gCountryInfoVectorsInitOnce.reset();
87
88 return TRUE;
89}
90
91/**
92 * Deleter for UChar* string
93 */
94static void U_CALLCONV
95deleteUCharString(void *obj) {
96 UChar *entry = (UChar*)obj;
97 uprv_free(entry);
98}
99
100/**
101 * Deleter for UVector
102 */
103static void U_CALLCONV
104deleteUVector(void *obj) {
105 delete (icu::UVector*) obj;
106}
107
108/**
109 * Deleter for OlsonToMetaMappingEntry
110 */
111static void U_CALLCONV
112deleteOlsonToMetaMappingEntry(void *obj) {
113 icu::OlsonToMetaMappingEntry *entry = (icu::OlsonToMetaMappingEntry*)obj;
114 uprv_free(entry);
115}
116
117U_CDECL_END
118
119U_NAMESPACE_BEGIN
120
121#define ZID_KEY_MAX 128
122
123static const char gMetaZones[] = "metaZones";
124static const char gMetazoneInfo[] = "metazoneInfo";
125static const char gMapTimezonesTag[] = "mapTimezones";
126
127static const char gKeyTypeData[] = "keyTypeData";
128static const char gTypeAliasTag[] = "typeAlias";
129static const char gTypeMapTag[] = "typeMap";
130static const char gTimezoneTag[] = "timezone";
131
132static const char gPrimaryZonesTag[] = "primaryZones";
133
134static const char gWorldTag[] = "001";
135
136static const UChar gWorld[] = {0x30, 0x30, 0x31, 0x00}; // "001"
137
138static const UChar gDefaultFrom[] = {0x31, 0x39, 0x37, 0x30, 0x2D, 0x30, 0x31, 0x2D, 0x30, 0x31,
139 0x20, 0x30, 0x30, 0x3A, 0x30, 0x30, 0x00}; // "1970-01-01 00:00"
140static const UChar gDefaultTo[] = {0x39, 0x39, 0x39, 0x39, 0x2D, 0x31, 0x32, 0x2D, 0x33, 0x31,
141 0x20, 0x32, 0x33, 0x3A, 0x35, 0x39, 0x00}; // "9999-12-31 23:59"
142
143static const UChar gCustomTzPrefix[] = {0x47, 0x4D, 0x54, 0}; // "GMT"
144
145#define ASCII_DIGIT(c) (((c)>=0x30 && (c)<=0x39) ? (c)-0x30 : -1)
146
147/*
148 * Convert a date string used by metazone mappings to UDate.
149 * The format used by CLDR metazone mapping is "yyyy-MM-dd HH:mm".
150 */
151static UDate
152parseDate (const UChar *text, UErrorCode &status) {
153 if (U_FAILURE(status)) {
154 return 0;
155 }
156 int32_t len = u_strlen(text);
157 if (len != 16 && len != 10) {
158 // It must be yyyy-MM-dd HH:mm (length 16) or yyyy-MM-dd (length 10)
159 status = U_INVALID_FORMAT_ERROR;
160 return 0;
161 }
162
163 int32_t year = 0, month = 0, day = 0, hour = 0, min = 0, n;
164 int32_t idx;
165
166 // "yyyy" (0 - 3)
167 for (idx = 0; idx <= 3 && U_SUCCESS(status); idx++) {
168 n = ASCII_DIGIT((int32_t)text[idx]);
169 if (n >= 0) {
170 year = 10*year + n;
171 } else {
172 status = U_INVALID_FORMAT_ERROR;
173 }
174 }
175 // "MM" (5 - 6)
176 for (idx = 5; idx <= 6 && U_SUCCESS(status); idx++) {
177 n = ASCII_DIGIT((int32_t)text[idx]);
178 if (n >= 0) {
179 month = 10*month + n;
180 } else {
181 status = U_INVALID_FORMAT_ERROR;
182 }
183 }
184 // "dd" (8 - 9)
185 for (idx = 8; idx <= 9 && U_SUCCESS(status); idx++) {
186 n = ASCII_DIGIT((int32_t)text[idx]);
187 if (n >= 0) {
188 day = 10*day + n;
189 } else {
190 status = U_INVALID_FORMAT_ERROR;
191 }
192 }
193 if (len == 16) {
194 // "HH" (11 - 12)
195 for (idx = 11; idx <= 12 && U_SUCCESS(status); idx++) {
196 n = ASCII_DIGIT((int32_t)text[idx]);
197 if (n >= 0) {
198 hour = 10*hour + n;
199 } else {
200 status = U_INVALID_FORMAT_ERROR;
201 }
202 }
203 // "mm" (14 - 15)
204 for (idx = 14; idx <= 15 && U_SUCCESS(status); idx++) {
205 n = ASCII_DIGIT((int32_t)text[idx]);
206 if (n >= 0) {
207 min = 10*min + n;
208 } else {
209 status = U_INVALID_FORMAT_ERROR;
210 }
211 }
212 }
213
214 if (U_SUCCESS(status)) {
215 UDate date = Grego::fieldsToDay(year, month - 1, day) * U_MILLIS_PER_DAY
216 + hour * U_MILLIS_PER_HOUR + min * U_MILLIS_PER_MINUTE;
217 return date;
218 }
219 return 0;
220}
221
222static void U_CALLCONV initCanonicalIDCache(UErrorCode &status) {
223 gCanonicalIDCache = uhash_open(uhash_hashUChars, uhash_compareUChars, NULL, &status);
224 if (gCanonicalIDCache == NULL) {
225 status = U_MEMORY_ALLOCATION_ERROR;
226 }
227 if (U_FAILURE(status)) {
228 gCanonicalIDCache = NULL;
229 }
230 // No key/value deleters - keys/values are from a resource bundle
231 ucln_i18n_registerCleanup(UCLN_I18N_ZONEMETA, zoneMeta_cleanup);
232}
233
234
235const UChar* U_EXPORT2
236ZoneMeta::getCanonicalCLDRID(const UnicodeString &tzid, UErrorCode& status) {
237 if (U_FAILURE(status)) {
238 return NULL;
239 }
240
241 if (tzid.isBogus() || tzid.length() > ZID_KEY_MAX) {
242 status = U_ILLEGAL_ARGUMENT_ERROR;
243 return NULL;
244 }
245
246 // Checking the cached results
247 umtx_initOnce(gCanonicalIDCacheInitOnce, &initCanonicalIDCache, status);
248 if (U_FAILURE(status)) {
249 return NULL;
250 }
251
252 const UChar *canonicalID = NULL;
253
254 UErrorCode tmpStatus = U_ZERO_ERROR;
255 UChar utzid[ZID_KEY_MAX + 1];
256 tzid.extract(utzid, ZID_KEY_MAX + 1, tmpStatus);
257 U_ASSERT(tmpStatus == U_ZERO_ERROR); // we checked the length of tzid already
258
259 if (!uprv_isInvariantUString(utzid, -1)) {
260 // All of known tz IDs are only containing ASCII invariant characters.
261 status = U_ILLEGAL_ARGUMENT_ERROR;
262 return NULL;
263 }
264
265 // Check if it was already cached
266 umtx_lock(&gZoneMetaLock);
267 {
268 canonicalID = (const UChar *)uhash_get(gCanonicalIDCache, utzid);
269 }
270 umtx_unlock(&gZoneMetaLock);
271
272 if (canonicalID != NULL) {
273 return canonicalID;
274 }
275
276 // If not, resolve CLDR canonical ID with resource data
277 UBool isInputCanonical = FALSE;
278 char id[ZID_KEY_MAX + 1];
279 tzid.extract(0, 0x7fffffff, id, UPRV_LENGTHOF(id), US_INV);
280
281 // replace '/' with ':'
282 char *p = id;
283 while (*p++) {
284 if (*p == '/') {
285 *p = ':';
286 }
287 }
288
289 UResourceBundle *top = ures_openDirect(NULL, gKeyTypeData, &tmpStatus);
290 UResourceBundle *rb = ures_getByKey(top, gTypeMapTag, NULL, &tmpStatus);
291 ures_getByKey(rb, gTimezoneTag, rb, &tmpStatus);
292 ures_getByKey(rb, id, rb, &tmpStatus);
293 if (U_SUCCESS(tmpStatus)) {
294 // type entry (canonical) found
295 // the input is the canonical ID. resolve to const UChar*
296 canonicalID = TimeZone::findID(tzid);
297 isInputCanonical = TRUE;
298 }
299
300 if (canonicalID == NULL) {
301 // If a map element not found, then look for an alias
302 tmpStatus = U_ZERO_ERROR;
303 ures_getByKey(top, gTypeAliasTag, rb, &tmpStatus);
304 ures_getByKey(rb, gTimezoneTag, rb, &tmpStatus);
305 const UChar *canonical = ures_getStringByKey(rb,id,NULL,&tmpStatus);
306 if (U_SUCCESS(tmpStatus)) {
307 // canonical map found
308 canonicalID = canonical;
309 }
310
311 if (canonicalID == NULL) {
312 // Dereference the input ID using the tz data
313 const UChar *derefer = TimeZone::dereferOlsonLink(tzid);
314 if (derefer == NULL) {
315 status = U_ILLEGAL_ARGUMENT_ERROR;
316 } else {
317 int32_t len = u_strlen(derefer);
318 u_UCharsToChars(derefer,id,len);
319 id[len] = (char) 0; // Make sure it is null terminated.
320
321 // replace '/' with ':'
322 char *q = id;
323 while (*q++) {
324 if (*q == '/') {
325 *q = ':';
326 }
327 }
328
329 // If a dereference turned something up then look for an alias.
330 // rb still points to the alias table, so we don't have to go looking
331 // for it.
332 tmpStatus = U_ZERO_ERROR;
333 canonical = ures_getStringByKey(rb,id,NULL,&tmpStatus);
334 if (U_SUCCESS(tmpStatus)) {
335 // canonical map for the dereferenced ID found
336 canonicalID = canonical;
337 } else {
338 canonicalID = derefer;
339 isInputCanonical = TRUE;
340 }
341 }
342 }
343 }
344 ures_close(rb);
345 ures_close(top);
346
347 if (U_SUCCESS(status)) {
348 U_ASSERT(canonicalID != NULL); // canocanilD must be non-NULL here
349
350 // Put the resolved canonical ID to the cache
351 umtx_lock(&gZoneMetaLock);
352 {
353 const UChar* idInCache = (const UChar *)uhash_get(gCanonicalIDCache, utzid);
354 if (idInCache == NULL) {
355 const UChar* key = ZoneMeta::findTimeZoneID(tzid);
356 U_ASSERT(key != NULL);
357 if (key != NULL) {
358 idInCache = (const UChar *)uhash_put(gCanonicalIDCache, (void *)key, (void *)canonicalID, &status);
359 U_ASSERT(idInCache == NULL);
360 }
361 }
362 if (U_SUCCESS(status) && isInputCanonical) {
363 // Also put canonical ID itself into the cache if not exist
364 const UChar *canonicalInCache = (const UChar*)uhash_get(gCanonicalIDCache, canonicalID);
365 if (canonicalInCache == NULL) {
366 canonicalInCache = (const UChar *)uhash_put(gCanonicalIDCache, (void *)canonicalID, (void *)canonicalID, &status);
367 U_ASSERT(canonicalInCache == NULL);
368 }
369 }
370 }
371 umtx_unlock(&gZoneMetaLock);
372 }
373
374 return canonicalID;
375}
376
377UnicodeString& U_EXPORT2
378ZoneMeta::getCanonicalCLDRID(const UnicodeString &tzid, UnicodeString &systemID, UErrorCode& status) {
379 const UChar *canonicalID = getCanonicalCLDRID(tzid, status);
380 if (U_FAILURE(status) || canonicalID == NULL) {
381 systemID.setToBogus();
382 return systemID;
383 }
384 systemID.setTo(TRUE, canonicalID, -1);
385 return systemID;
386}
387
388const UChar* U_EXPORT2
389ZoneMeta::getCanonicalCLDRID(const TimeZone& tz) {
390 if (dynamic_cast<const OlsonTimeZone *>(&tz) != NULL) {
391 // short cut for OlsonTimeZone
392 const OlsonTimeZone *otz = (const OlsonTimeZone*)&tz;
393 return otz->getCanonicalID();
394 }
395 UErrorCode status = U_ZERO_ERROR;
396 UnicodeString tzID;
397 return getCanonicalCLDRID(tz.getID(tzID), status);
398}
399
400static void U_CALLCONV countryInfoVectorsInit(UErrorCode &status) {
401 // Create empty vectors
402 // No deleters for these UVectors, it's a reference to a resource bundle string.
403 gSingleZoneCountries = new UVector(NULL, uhash_compareUChars, status);
404 if (gSingleZoneCountries == NULL) {
405 status = U_MEMORY_ALLOCATION_ERROR;
406 }
407 gMultiZonesCountries = new UVector(NULL, uhash_compareUChars, status);
408 if (gMultiZonesCountries == NULL) {
409 status = U_MEMORY_ALLOCATION_ERROR;
410 }
411
412 if (U_FAILURE(status)) {
413 delete gSingleZoneCountries;
414 delete gMultiZonesCountries;
415 gSingleZoneCountries = NULL;
416 gMultiZonesCountries = NULL;
417 }
418 ucln_i18n_registerCleanup(UCLN_I18N_ZONEMETA, zoneMeta_cleanup);
419}
420
421
422UnicodeString& U_EXPORT2
423ZoneMeta::getCanonicalCountry(const UnicodeString &tzid, UnicodeString &country, UBool *isPrimary /* = NULL */) {
424 if (isPrimary != NULL) {
425 *isPrimary = FALSE;
426 }
427
428 const UChar *region = TimeZone::getRegion(tzid);
429 if (region != NULL && u_strcmp(gWorld, region) != 0) {
430 country.setTo(region, -1);
431 } else {
432 country.setToBogus();
433 return country;
434 }
435
436 if (isPrimary != NULL) {
437 char regionBuf[] = {0, 0, 0};
438
439 // Checking the cached results
440 UErrorCode status = U_ZERO_ERROR;
441 umtx_initOnce(gCountryInfoVectorsInitOnce, &countryInfoVectorsInit, status);
442 if (U_FAILURE(status)) {
443 return country;
444 }
445
446 // Check if it was already cached
447 UBool cached = FALSE;
448 UBool singleZone = FALSE;
449 umtx_lock(&gZoneMetaLock);
450 {
451 singleZone = cached = gSingleZoneCountries->contains((void*)region);
452 if (!cached) {
453 cached = gMultiZonesCountries->contains((void*)region);
454 }
455 }
456 umtx_unlock(&gZoneMetaLock);
457
458 if (!cached) {
459 // We need to go through all zones associated with the region.
460 // This is relatively heavy operation.
461
462 U_ASSERT(u_strlen(region) == 2);
463
464 u_UCharsToChars(region, regionBuf, 2);
465
466 StringEnumeration *ids = TimeZone::createTimeZoneIDEnumeration(UCAL_ZONE_TYPE_CANONICAL_LOCATION, regionBuf, NULL, status);
467 int32_t idsLen = ids->count(status);
468 if (U_SUCCESS(status) && idsLen == 1) {
469 // only the single zone is available for the region
470 singleZone = TRUE;
471 }
472 delete ids;
473
474 // Cache the result
475 umtx_lock(&gZoneMetaLock);
476 {
477 UErrorCode ec = U_ZERO_ERROR;
478 if (singleZone) {
479 if (!gSingleZoneCountries->contains((void*)region)) {
480 gSingleZoneCountries->addElement((void*)region, ec);
481 }
482 } else {
483 if (!gMultiZonesCountries->contains((void*)region)) {
484 gMultiZonesCountries->addElement((void*)region, ec);
485 }
486 }
487 }
488 umtx_unlock(&gZoneMetaLock);
489 }
490
491 if (singleZone) {
492 *isPrimary = TRUE;
493 } else {
494 // Note: We may cache the primary zone map in future.
495
496 // Even a country has multiple zones, one of them might be
497 // dominant and treated as a primary zone
498 int32_t idLen = 0;
499 if (regionBuf[0] == 0) {
500 u_UCharsToChars(region, regionBuf, 2);
501 }
502
503 UResourceBundle *rb = ures_openDirect(NULL, gMetaZones, &status);
504 ures_getByKey(rb, gPrimaryZonesTag, rb, &status);
505 const UChar *primaryZone = ures_getStringByKey(rb, regionBuf, &idLen, &status);
506 if (U_SUCCESS(status)) {
507 if (tzid.compare(primaryZone, idLen) == 0) {
508 *isPrimary = TRUE;
509 } else {
510 // The given ID might not be a canonical ID
511 UnicodeString canonicalID;
512 TimeZone::getCanonicalID(tzid, canonicalID, status);
513 if (U_SUCCESS(status) && canonicalID.compare(primaryZone, idLen) == 0) {
514 *isPrimary = TRUE;
515 }
516 }
517 }
518 ures_close(rb);
519 }
520 }
521
522 return country;
523}
524
525UnicodeString& U_EXPORT2
526ZoneMeta::getMetazoneID(const UnicodeString &tzid, UDate date, UnicodeString &result) {
527 UBool isSet = FALSE;
528 const UVector *mappings = getMetazoneMappings(tzid);
529 if (mappings != NULL) {
530 for (int32_t i = 0; i < mappings->size(); i++) {
531 OlsonToMetaMappingEntry *mzm = (OlsonToMetaMappingEntry*)mappings->elementAt(i);
532 if (mzm->from <= date && mzm->to > date) {
533 result.setTo(mzm->mzid, -1);
534 isSet = TRUE;
535 break;
536 }
537 }
538 }
539 if (!isSet) {
540 result.setToBogus();
541 }
542 return result;
543}
544
545static void U_CALLCONV olsonToMetaInit(UErrorCode &status) {
546 U_ASSERT(gOlsonToMeta == NULL);
547 ucln_i18n_registerCleanup(UCLN_I18N_ZONEMETA, zoneMeta_cleanup);
548 gOlsonToMeta = uhash_open(uhash_hashUChars, uhash_compareUChars, NULL, &status);
549 if (U_FAILURE(status)) {
550 gOlsonToMeta = NULL;
551 } else {
552 uhash_setKeyDeleter(gOlsonToMeta, deleteUCharString);
553 uhash_setValueDeleter(gOlsonToMeta, deleteUVector);
554 }
555}
556
557
558const UVector* U_EXPORT2
559ZoneMeta::getMetazoneMappings(const UnicodeString &tzid) {
560 UErrorCode status = U_ZERO_ERROR;
561 UChar tzidUChars[ZID_KEY_MAX + 1];
562 tzid.extract(tzidUChars, ZID_KEY_MAX + 1, status);
563 if (U_FAILURE(status) || status == U_STRING_NOT_TERMINATED_WARNING) {
564 return NULL;
565 }
566
567 umtx_initOnce(gOlsonToMetaInitOnce, &olsonToMetaInit, status);
568 if (U_FAILURE(status)) {
569 return NULL;
570 }
571
572 // get the mapping from cache
573 const UVector *result = NULL;
574
575 umtx_lock(&gZoneMetaLock);
576 {
577 result = (UVector*) uhash_get(gOlsonToMeta, tzidUChars);
578 }
579 umtx_unlock(&gZoneMetaLock);
580
581 if (result != NULL) {
582 return result;
583 }
584
585 // miss the cache - create new one
586 UVector *tmpResult = createMetazoneMappings(tzid);
587 if (tmpResult == NULL) {
588 // not available
589 return NULL;
590 }
591
592 // put the new one into the cache
593 umtx_lock(&gZoneMetaLock);
594 {
595 // make sure it's already created
596 result = (UVector*) uhash_get(gOlsonToMeta, tzidUChars);
597 if (result == NULL) {
598 // add the one just created
599 int32_t tzidLen = tzid.length() + 1;
600 UChar *key = (UChar*)uprv_malloc(tzidLen * sizeof(UChar));
601 if (key == NULL) {
602 // memory allocation error.. just return NULL
603 result = NULL;
604 delete tmpResult;
605 } else {
606 tzid.extract(key, tzidLen, status);
607 uhash_put(gOlsonToMeta, key, tmpResult, &status);
608 if (U_FAILURE(status)) {
609 // delete the mapping
610 result = NULL;
611 delete tmpResult;
612 } else {
613 result = tmpResult;
614 }
615 }
616 } else {
617 // another thread already put the one
618 delete tmpResult;
619 }
620 }
621 umtx_unlock(&gZoneMetaLock);
622
623 return result;
624}
625
626UVector*
627ZoneMeta::createMetazoneMappings(const UnicodeString &tzid) {
628 UVector *mzMappings = NULL;
629 UErrorCode status = U_ZERO_ERROR;
630
631 UnicodeString canonicalID;
632 UResourceBundle *rb = ures_openDirect(NULL, gMetaZones, &status);
633 ures_getByKey(rb, gMetazoneInfo, rb, &status);
634 getCanonicalCLDRID(tzid, canonicalID, status);
635
636 if (U_SUCCESS(status)) {
637 char tzKey[ZID_KEY_MAX + 1];
638 int32_t tzKeyLen = canonicalID.extract(0, canonicalID.length(), tzKey, sizeof(tzKey), US_INV);
639 tzKey[tzKeyLen] = 0;
640
641 // tzid keys are using ':' as separators
642 char *p = tzKey;
643 while (*p) {
644 if (*p == '/') {
645 *p = ':';
646 }
647 p++;
648 }
649
650 ures_getByKey(rb, tzKey, rb, &status);
651
652 if (U_SUCCESS(status)) {
653 UResourceBundle *mz = NULL;
654 while (ures_hasNext(rb)) {
655 mz = ures_getNextResource(rb, mz, &status);
656
657 const UChar *mz_name = ures_getStringByIndex(mz, 0, NULL, &status);
658 const UChar *mz_from = gDefaultFrom;
659 const UChar *mz_to = gDefaultTo;
660
661 if (ures_getSize(mz) == 3) {
662 mz_from = ures_getStringByIndex(mz, 1, NULL, &status);
663 mz_to = ures_getStringByIndex(mz, 2, NULL, &status);
664 }
665
666 if(U_FAILURE(status)){
667 status = U_ZERO_ERROR;
668 continue;
669 }
670 // We do not want to use SimpleDateformat to parse boundary dates,
671 // because this code could be triggered by the initialization code
672 // used by SimpleDateFormat.
673 UDate from = parseDate(mz_from, status);
674 UDate to = parseDate(mz_to, status);
675 if (U_FAILURE(status)) {
676 status = U_ZERO_ERROR;
677 continue;
678 }
679
680 OlsonToMetaMappingEntry *entry = (OlsonToMetaMappingEntry*)uprv_malloc(sizeof(OlsonToMetaMappingEntry));
681 if (entry == NULL) {
682 status = U_MEMORY_ALLOCATION_ERROR;
683 break;
684 }
685 entry->mzid = mz_name;
686 entry->from = from;
687 entry->to = to;
688
689 if (mzMappings == NULL) {
690 mzMappings = new UVector(deleteOlsonToMetaMappingEntry, NULL, status);
691 if (U_FAILURE(status)) {
692 delete mzMappings;
693 mzMappings = NULL;
694 uprv_free(entry);
695 break;
696 }
697 }
698
699 mzMappings->addElement(entry, status);
700 if (U_FAILURE(status)) {
701 break;
702 }
703 }
704 ures_close(mz);
705 if (U_FAILURE(status)) {
706 if (mzMappings != NULL) {
707 delete mzMappings;
708 mzMappings = NULL;
709 }
710 }
711 }
712 }
713 ures_close(rb);
714 return mzMappings;
715}
716
717UnicodeString& U_EXPORT2
718ZoneMeta::getZoneIdByMetazone(const UnicodeString &mzid, const UnicodeString &region, UnicodeString &result) {
719 UErrorCode status = U_ZERO_ERROR;
720 const UChar *tzid = NULL;
721 int32_t tzidLen = 0;
722 char keyBuf[ZID_KEY_MAX + 1];
723 int32_t keyLen = 0;
724
725 if (mzid.isBogus() || mzid.length() > ZID_KEY_MAX) {
726 result.setToBogus();
727 return result;
728 }
729
730 keyLen = mzid.extract(0, mzid.length(), keyBuf, ZID_KEY_MAX + 1, US_INV);
731 keyBuf[keyLen] = 0;
732
733 UResourceBundle *rb = ures_openDirect(NULL, gMetaZones, &status);
734 ures_getByKey(rb, gMapTimezonesTag, rb, &status);
735 ures_getByKey(rb, keyBuf, rb, &status);
736
737 if (U_SUCCESS(status)) {
738 // check region mapping
739 if (region.length() == 2 || region.length() == 3) {
740 keyLen = region.extract(0, region.length(), keyBuf, ZID_KEY_MAX + 1, US_INV);
741 keyBuf[keyLen] = 0;
742 tzid = ures_getStringByKey(rb, keyBuf, &tzidLen, &status);
743 if (status == U_MISSING_RESOURCE_ERROR) {
744 status = U_ZERO_ERROR;
745 }
746 }
747 if (U_SUCCESS(status) && tzid == NULL) {
748 // try "001"
749 tzid = ures_getStringByKey(rb, gWorldTag, &tzidLen, &status);
750 }
751 }
752 ures_close(rb);
753
754 if (tzid == NULL) {
755 result.setToBogus();
756 } else {
757 result.setTo(tzid, tzidLen);
758 }
759
760 return result;
761}
762
763static void U_CALLCONV initAvailableMetaZoneIDs () {
764 U_ASSERT(gMetaZoneIDs == NULL);
765 U_ASSERT(gMetaZoneIDTable == NULL);
766 ucln_i18n_registerCleanup(UCLN_I18N_ZONEMETA, zoneMeta_cleanup);
767
768 UErrorCode status = U_ZERO_ERROR;
769 gMetaZoneIDTable = uhash_open(uhash_hashUnicodeString, uhash_compareUnicodeString, NULL, &status);
770 if (U_FAILURE(status) || gMetaZoneIDTable == NULL) {
771 gMetaZoneIDTable = NULL;
772 return;
773 }
774 uhash_setKeyDeleter(gMetaZoneIDTable, uprv_deleteUObject);
775 // No valueDeleter, because the vector maintain the value objects
776 gMetaZoneIDs = new UVector(NULL, uhash_compareUChars, status);
777 if (U_FAILURE(status) || gMetaZoneIDs == NULL) {
778 gMetaZoneIDs = NULL;
779 uhash_close(gMetaZoneIDTable);
780 gMetaZoneIDTable = NULL;
781 return;
782 }
783 gMetaZoneIDs->setDeleter(uprv_free);
784
785 UResourceBundle *rb = ures_openDirect(NULL, gMetaZones, &status);
786 UResourceBundle *bundle = ures_getByKey(rb, gMapTimezonesTag, NULL, &status);
787 StackUResourceBundle res;
788 while (U_SUCCESS(status) && ures_hasNext(bundle)) {
789 ures_getNextResource(bundle, res.getAlias(), &status);
790 if (U_FAILURE(status)) {
791 break;
792 }
793 const char *mzID = ures_getKey(res.getAlias());
794 int32_t len = static_cast<int32_t>(uprv_strlen(mzID));
795 UChar *uMzID = (UChar*)uprv_malloc(sizeof(UChar) * (len + 1));
796 if (uMzID == NULL) {
797 status = U_MEMORY_ALLOCATION_ERROR;
798 break;
799 }
800 u_charsToUChars(mzID, uMzID, len);
801 uMzID[len] = 0;
802 UnicodeString *usMzID = new UnicodeString(uMzID);
803 if (uhash_get(gMetaZoneIDTable, usMzID) == NULL) {
804 gMetaZoneIDs->addElement((void *)uMzID, status);
805 uhash_put(gMetaZoneIDTable, (void *)usMzID, (void *)uMzID, &status);
806 } else {
807 uprv_free(uMzID);
808 delete usMzID;
809 }
810 }
811 ures_close(bundle);
812 ures_close(rb);
813
814 if (U_FAILURE(status)) {
815 uhash_close(gMetaZoneIDTable);
816 delete gMetaZoneIDs;
817 gMetaZoneIDTable = NULL;
818 gMetaZoneIDs = NULL;
819 }
820}
821
822const UVector*
823ZoneMeta::getAvailableMetazoneIDs() {
824 umtx_initOnce(gMetaZoneIDsInitOnce, &initAvailableMetaZoneIDs);
825 return gMetaZoneIDs;
826}
827
828const UChar*
829ZoneMeta::findMetaZoneID(const UnicodeString& mzid) {
830 umtx_initOnce(gMetaZoneIDsInitOnce, &initAvailableMetaZoneIDs);
831 if (gMetaZoneIDTable == NULL) {
832 return NULL;
833 }
834 return (const UChar*)uhash_get(gMetaZoneIDTable, &mzid);
835}
836
837const UChar*
838ZoneMeta::findTimeZoneID(const UnicodeString& tzid) {
839 return TimeZone::findID(tzid);
840}
841
842
843TimeZone*
844ZoneMeta::createCustomTimeZone(int32_t offset) {
845 UBool negative = FALSE;
846 int32_t tmp = offset;
847 if (offset < 0) {
848 negative = TRUE;
849 tmp = -offset;
850 }
851 uint8_t hour, min, sec;
852
853 tmp /= 1000;
854 sec = static_cast<uint8_t>(tmp % 60);
855 tmp /= 60;
856 min = static_cast<uint8_t>(tmp % 60);
857 hour = static_cast<uint8_t>(tmp / 60);
858
859 UnicodeString zid;
860 formatCustomID(hour, min, sec, negative, zid);
861 return new SimpleTimeZone(offset, zid);
862}
863
864UnicodeString&
865ZoneMeta::formatCustomID(uint8_t hour, uint8_t min, uint8_t sec, UBool negative, UnicodeString& id) {
866 // Create normalized time zone ID - GMT[+|-]HH:mm[:ss]
867 id.setTo(gCustomTzPrefix, -1);
868 if (hour != 0 || min != 0) {
869 if (negative) {
870 id.append((UChar)0x2D); // '-'
871 } else {
872 id.append((UChar)0x2B); // '+'
873 }
874 // Always use US-ASCII digits
875 id.append((UChar)(0x30 + (hour%100)/10));
876 id.append((UChar)(0x30 + (hour%10)));
877 id.append((UChar)0x3A); // ':'
878 id.append((UChar)(0x30 + (min%100)/10));
879 id.append((UChar)(0x30 + (min%10)));
880 if (sec != 0) {
881 id.append((UChar)0x3A); // ':'
882 id.append((UChar)(0x30 + (sec%100)/10));
883 id.append((UChar)(0x30 + (sec%10)));
884 }
885 }
886 return id;
887}
888
889const UChar*
890ZoneMeta::getShortID(const TimeZone& tz) {
891 const UChar* canonicalID = NULL;
892 if (dynamic_cast<const OlsonTimeZone *>(&tz) != NULL) {
893 // short cut for OlsonTimeZone
894 const OlsonTimeZone *otz = (const OlsonTimeZone*)&tz;
895 canonicalID = otz->getCanonicalID();
896 }
897 if (canonicalID == NULL) {
898 return NULL;
899 }
900 return getShortIDFromCanonical(canonicalID);
901}
902
903const UChar*
904ZoneMeta::getShortID(const UnicodeString& id) {
905 UErrorCode status = U_ZERO_ERROR;
906 const UChar* canonicalID = ZoneMeta::getCanonicalCLDRID(id, status);
907 if (U_FAILURE(status) || canonicalID == NULL) {
908 return NULL;
909 }
910 return ZoneMeta::getShortIDFromCanonical(canonicalID);
911}
912
913const UChar*
914ZoneMeta::getShortIDFromCanonical(const UChar* canonicalID) {
915 const UChar* shortID = NULL;
916 int32_t len = u_strlen(canonicalID);
917 char tzidKey[ZID_KEY_MAX + 1];
918
919 u_UCharsToChars(canonicalID, tzidKey, len);
920 tzidKey[len] = (char) 0; // Make sure it is null terminated.
921
922 // replace '/' with ':'
923 char *p = tzidKey;
924 while (*p++) {
925 if (*p == '/') {
926 *p = ':';
927 }
928 }
929
930 UErrorCode status = U_ZERO_ERROR;
931 UResourceBundle *rb = ures_openDirect(NULL, gKeyTypeData, &status);
932 ures_getByKey(rb, gTypeMapTag, rb, &status);
933 ures_getByKey(rb, gTimezoneTag, rb, &status);
934 shortID = ures_getStringByKey(rb, tzidKey, NULL, &status);
935 ures_close(rb);
936
937 return shortID;
938}
939
940U_NAMESPACE_END
941
942#endif /* #if !UCONFIG_NO_FORMATTING */
943