1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/intl/icu/source/i18n/zonemeta.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,939 @@
1.4 +/*
1.5 +*******************************************************************************
1.6 +* Copyright (C) 2007-2013, International Business Machines Corporation and
1.7 +* others. All Rights Reserved.
1.8 +*******************************************************************************
1.9 +*/
1.10 +
1.11 +#include "unicode/utypes.h"
1.12 +
1.13 +#if !UCONFIG_NO_FORMATTING
1.14 +
1.15 +#include "zonemeta.h"
1.16 +
1.17 +#include "unicode/timezone.h"
1.18 +#include "unicode/ustring.h"
1.19 +#include "unicode/putil.h"
1.20 +#include "unicode/simpletz.h"
1.21 +
1.22 +#include "umutex.h"
1.23 +#include "uvector.h"
1.24 +#include "cmemory.h"
1.25 +#include "gregoimp.h"
1.26 +#include "cstring.h"
1.27 +#include "ucln_in.h"
1.28 +#include "uassert.h"
1.29 +#include "uresimp.h"
1.30 +#include "uhash.h"
1.31 +#include "olsontz.h"
1.32 +
1.33 +static UMutex gZoneMetaLock = U_MUTEX_INITIALIZER;
1.34 +
1.35 +// CLDR Canonical ID mapping table
1.36 +static UHashtable *gCanonicalIDCache = NULL;
1.37 +static icu::UInitOnce gCanonicalIDCacheInitOnce = U_INITONCE_INITIALIZER;
1.38 +
1.39 +// Metazone mapping table
1.40 +static UHashtable *gOlsonToMeta = NULL;
1.41 +static icu::UInitOnce gOlsonToMetaInitOnce = U_INITONCE_INITIALIZER;
1.42 +
1.43 +// Available metazone IDs vector and table
1.44 +static icu::UVector *gMetaZoneIDs = NULL;
1.45 +static UHashtable *gMetaZoneIDTable = NULL;
1.46 +static icu::UInitOnce gMetaZoneIDsInitOnce = U_INITONCE_INITIALIZER;
1.47 +
1.48 +// Country info vectors
1.49 +static icu::UVector *gSingleZoneCountries = NULL;
1.50 +static icu::UVector *gMultiZonesCountries = NULL;
1.51 +static icu::UInitOnce gCountryInfoVectorsInitOnce = U_INITONCE_INITIALIZER;
1.52 +
1.53 +U_CDECL_BEGIN
1.54 +
1.55 +/**
1.56 + * Cleanup callback func
1.57 + */
1.58 +static UBool U_CALLCONV zoneMeta_cleanup(void)
1.59 +{
1.60 + if (gCanonicalIDCache != NULL) {
1.61 + uhash_close(gCanonicalIDCache);
1.62 + gCanonicalIDCache = NULL;
1.63 + }
1.64 + gCanonicalIDCacheInitOnce.reset();
1.65 +
1.66 + if (gOlsonToMeta != NULL) {
1.67 + uhash_close(gOlsonToMeta);
1.68 + gOlsonToMeta = NULL;
1.69 + }
1.70 + gOlsonToMetaInitOnce.reset();
1.71 +
1.72 + if (gMetaZoneIDTable != NULL) {
1.73 + uhash_close(gMetaZoneIDTable);
1.74 + gMetaZoneIDTable = NULL;
1.75 + }
1.76 + // delete after closing gMetaZoneIDTable, because it holds
1.77 + // value objects held by the hashtable
1.78 + delete gMetaZoneIDs;
1.79 + gMetaZoneIDs = NULL;
1.80 + gMetaZoneIDsInitOnce.reset();
1.81 +
1.82 + delete gSingleZoneCountries;
1.83 + gSingleZoneCountries = NULL;
1.84 + delete gMultiZonesCountries;
1.85 + gMultiZonesCountries = NULL;
1.86 + gCountryInfoVectorsInitOnce.reset();
1.87 +
1.88 + return TRUE;
1.89 +}
1.90 +
1.91 +/**
1.92 + * Deleter for UChar* string
1.93 + */
1.94 +static void U_CALLCONV
1.95 +deleteUCharString(void *obj) {
1.96 + UChar *entry = (UChar*)obj;
1.97 + uprv_free(entry);
1.98 +}
1.99 +
1.100 +/**
1.101 + * Deleter for UVector
1.102 + */
1.103 +static void U_CALLCONV
1.104 +deleteUVector(void *obj) {
1.105 + delete (icu::UVector*) obj;
1.106 +}
1.107 +
1.108 +/**
1.109 + * Deleter for OlsonToMetaMappingEntry
1.110 + */
1.111 +static void U_CALLCONV
1.112 +deleteOlsonToMetaMappingEntry(void *obj) {
1.113 + icu::OlsonToMetaMappingEntry *entry = (icu::OlsonToMetaMappingEntry*)obj;
1.114 + uprv_free(entry);
1.115 +}
1.116 +
1.117 +U_CDECL_END
1.118 +
1.119 +U_NAMESPACE_BEGIN
1.120 +
1.121 +#define ZID_KEY_MAX 128
1.122 +
1.123 +static const char gMetaZones[] = "metaZones";
1.124 +static const char gMetazoneInfo[] = "metazoneInfo";
1.125 +static const char gMapTimezonesTag[] = "mapTimezones";
1.126 +
1.127 +static const char gKeyTypeData[] = "keyTypeData";
1.128 +static const char gTypeAliasTag[] = "typeAlias";
1.129 +static const char gTypeMapTag[] = "typeMap";
1.130 +static const char gTimezoneTag[] = "timezone";
1.131 +
1.132 +static const char gPrimaryZonesTag[] = "primaryZones";
1.133 +
1.134 +static const char gWorldTag[] = "001";
1.135 +
1.136 +static const UChar gWorld[] = {0x30, 0x30, 0x31, 0x00}; // "001"
1.137 +
1.138 +static const UChar gDefaultFrom[] = {0x31, 0x39, 0x37, 0x30, 0x2D, 0x30, 0x31, 0x2D, 0x30, 0x31,
1.139 + 0x20, 0x30, 0x30, 0x3A, 0x30, 0x30, 0x00}; // "1970-01-01 00:00"
1.140 +static const UChar gDefaultTo[] = {0x39, 0x39, 0x39, 0x39, 0x2D, 0x31, 0x32, 0x2D, 0x33, 0x31,
1.141 + 0x20, 0x32, 0x33, 0x3A, 0x35, 0x39, 0x00}; // "9999-12-31 23:59"
1.142 +
1.143 +static const UChar gCustomTzPrefix[] = {0x47, 0x4D, 0x54, 0}; // "GMT"
1.144 +
1.145 +#define ASCII_DIGIT(c) (((c)>=0x30 && (c)<=0x39) ? (c)-0x30 : -1)
1.146 +
1.147 +/*
1.148 + * Convert a date string used by metazone mappings to UDate.
1.149 + * The format used by CLDR metazone mapping is "yyyy-MM-dd HH:mm".
1.150 + */
1.151 +static UDate
1.152 +parseDate (const UChar *text, UErrorCode &status) {
1.153 + if (U_FAILURE(status)) {
1.154 + return 0;
1.155 + }
1.156 + int32_t len = u_strlen(text);
1.157 + if (len != 16 && len != 10) {
1.158 + // It must be yyyy-MM-dd HH:mm (length 16) or yyyy-MM-dd (length 10)
1.159 + status = U_INVALID_FORMAT_ERROR;
1.160 + return 0;
1.161 + }
1.162 +
1.163 + int32_t year = 0, month = 0, day = 0, hour = 0, min = 0, n;
1.164 + int32_t idx;
1.165 +
1.166 + // "yyyy" (0 - 3)
1.167 + for (idx = 0; idx <= 3 && U_SUCCESS(status); idx++) {
1.168 + n = ASCII_DIGIT((int32_t)text[idx]);
1.169 + if (n >= 0) {
1.170 + year = 10*year + n;
1.171 + } else {
1.172 + status = U_INVALID_FORMAT_ERROR;
1.173 + }
1.174 + }
1.175 + // "MM" (5 - 6)
1.176 + for (idx = 5; idx <= 6 && U_SUCCESS(status); idx++) {
1.177 + n = ASCII_DIGIT((int32_t)text[idx]);
1.178 + if (n >= 0) {
1.179 + month = 10*month + n;
1.180 + } else {
1.181 + status = U_INVALID_FORMAT_ERROR;
1.182 + }
1.183 + }
1.184 + // "dd" (8 - 9)
1.185 + for (idx = 8; idx <= 9 && U_SUCCESS(status); idx++) {
1.186 + n = ASCII_DIGIT((int32_t)text[idx]);
1.187 + if (n >= 0) {
1.188 + day = 10*day + n;
1.189 + } else {
1.190 + status = U_INVALID_FORMAT_ERROR;
1.191 + }
1.192 + }
1.193 + if (len == 16) {
1.194 + // "HH" (11 - 12)
1.195 + for (idx = 11; idx <= 12 && U_SUCCESS(status); idx++) {
1.196 + n = ASCII_DIGIT((int32_t)text[idx]);
1.197 + if (n >= 0) {
1.198 + hour = 10*hour + n;
1.199 + } else {
1.200 + status = U_INVALID_FORMAT_ERROR;
1.201 + }
1.202 + }
1.203 + // "mm" (14 - 15)
1.204 + for (idx = 14; idx <= 15 && U_SUCCESS(status); idx++) {
1.205 + n = ASCII_DIGIT((int32_t)text[idx]);
1.206 + if (n >= 0) {
1.207 + min = 10*min + n;
1.208 + } else {
1.209 + status = U_INVALID_FORMAT_ERROR;
1.210 + }
1.211 + }
1.212 + }
1.213 +
1.214 + if (U_SUCCESS(status)) {
1.215 + UDate date = Grego::fieldsToDay(year, month - 1, day) * U_MILLIS_PER_DAY
1.216 + + hour * U_MILLIS_PER_HOUR + min * U_MILLIS_PER_MINUTE;
1.217 + return date;
1.218 + }
1.219 + return 0;
1.220 +}
1.221 +
1.222 +static void U_CALLCONV initCanonicalIDCache(UErrorCode &status) {
1.223 + gCanonicalIDCache = uhash_open(uhash_hashUChars, uhash_compareUChars, NULL, &status);
1.224 + if (gCanonicalIDCache == NULL) {
1.225 + status = U_MEMORY_ALLOCATION_ERROR;
1.226 + }
1.227 + if (U_FAILURE(status)) {
1.228 + gCanonicalIDCache = NULL;
1.229 + }
1.230 + // No key/value deleters - keys/values are from a resource bundle
1.231 + ucln_i18n_registerCleanup(UCLN_I18N_ZONEMETA, zoneMeta_cleanup);
1.232 +}
1.233 +
1.234 +
1.235 +const UChar* U_EXPORT2
1.236 +ZoneMeta::getCanonicalCLDRID(const UnicodeString &tzid, UErrorCode& status) {
1.237 + if (U_FAILURE(status)) {
1.238 + return NULL;
1.239 + }
1.240 +
1.241 + int32_t len = tzid.length();
1.242 + if (len > ZID_KEY_MAX) {
1.243 + status = U_ILLEGAL_ARGUMENT_ERROR;
1.244 + return NULL;
1.245 + }
1.246 +
1.247 + // Checking the cached results
1.248 + umtx_initOnce(gCanonicalIDCacheInitOnce, &initCanonicalIDCache, status);
1.249 + if (U_FAILURE(status)) {
1.250 + return NULL;
1.251 + }
1.252 +
1.253 + const UChar *canonicalID = NULL;
1.254 +
1.255 + UErrorCode tmpStatus = U_ZERO_ERROR;
1.256 + UChar utzid[ZID_KEY_MAX + 1];
1.257 + tzid.extract(utzid, ZID_KEY_MAX + 1, tmpStatus);
1.258 + U_ASSERT(tmpStatus == U_ZERO_ERROR); // we checked the length of tzid already
1.259 +
1.260 + // Check if it was already cached
1.261 + umtx_lock(&gZoneMetaLock);
1.262 + {
1.263 + canonicalID = (const UChar *)uhash_get(gCanonicalIDCache, utzid);
1.264 + }
1.265 + umtx_unlock(&gZoneMetaLock);
1.266 +
1.267 + if (canonicalID != NULL) {
1.268 + return canonicalID;
1.269 + }
1.270 +
1.271 + // If not, resolve CLDR canonical ID with resource data
1.272 + UBool isInputCanonical = FALSE;
1.273 + char id[ZID_KEY_MAX + 1];
1.274 + const UChar* idChars = tzid.getBuffer();
1.275 +
1.276 + u_UCharsToChars(idChars,id,len);
1.277 + id[len] = (char) 0; // Make sure it is null terminated.
1.278 +
1.279 + // replace '/' with ':'
1.280 + char *p = id;
1.281 + while (*p++) {
1.282 + if (*p == '/') {
1.283 + *p = ':';
1.284 + }
1.285 + }
1.286 +
1.287 + UResourceBundle *top = ures_openDirect(NULL, gKeyTypeData, &tmpStatus);
1.288 + UResourceBundle *rb = ures_getByKey(top, gTypeMapTag, NULL, &tmpStatus);
1.289 + ures_getByKey(rb, gTimezoneTag, rb, &tmpStatus);
1.290 + ures_getByKey(rb, id, rb, &tmpStatus);
1.291 + if (U_SUCCESS(tmpStatus)) {
1.292 + // type entry (canonical) found
1.293 + // the input is the canonical ID. resolve to const UChar*
1.294 + canonicalID = TimeZone::findID(tzid);
1.295 + isInputCanonical = TRUE;
1.296 + }
1.297 +
1.298 + if (canonicalID == NULL) {
1.299 + // If a map element not found, then look for an alias
1.300 + tmpStatus = U_ZERO_ERROR;
1.301 + ures_getByKey(top, gTypeAliasTag, rb, &tmpStatus);
1.302 + ures_getByKey(rb, gTimezoneTag, rb, &tmpStatus);
1.303 + const UChar *canonical = ures_getStringByKey(rb,id,NULL,&tmpStatus);
1.304 + if (U_SUCCESS(tmpStatus)) {
1.305 + // canonical map found
1.306 + canonicalID = canonical;
1.307 + }
1.308 +
1.309 + if (canonicalID == NULL) {
1.310 + // Dereference the input ID using the tz data
1.311 + const UChar *derefer = TimeZone::dereferOlsonLink(tzid);
1.312 + if (derefer == NULL) {
1.313 + status = U_ILLEGAL_ARGUMENT_ERROR;
1.314 + } else {
1.315 + len = u_strlen(derefer);
1.316 + u_UCharsToChars(derefer,id,len);
1.317 + id[len] = (char) 0; // Make sure it is null terminated.
1.318 +
1.319 + // replace '/' with ':'
1.320 + char *p = id;
1.321 + while (*p++) {
1.322 + if (*p == '/') {
1.323 + *p = ':';
1.324 + }
1.325 + }
1.326 +
1.327 + // If a dereference turned something up then look for an alias.
1.328 + // rb still points to the alias table, so we don't have to go looking
1.329 + // for it.
1.330 + tmpStatus = U_ZERO_ERROR;
1.331 + canonical = ures_getStringByKey(rb,id,NULL,&tmpStatus);
1.332 + if (U_SUCCESS(tmpStatus)) {
1.333 + // canonical map for the dereferenced ID found
1.334 + canonicalID = canonical;
1.335 + } else {
1.336 + canonicalID = derefer;
1.337 + isInputCanonical = TRUE;
1.338 + }
1.339 + }
1.340 + }
1.341 + }
1.342 + ures_close(rb);
1.343 + ures_close(top);
1.344 +
1.345 + if (U_SUCCESS(status)) {
1.346 + U_ASSERT(canonicalID != NULL); // canocanilD must be non-NULL here
1.347 +
1.348 + // Put the resolved canonical ID to the cache
1.349 + umtx_lock(&gZoneMetaLock);
1.350 + {
1.351 + const UChar* idInCache = (const UChar *)uhash_get(gCanonicalIDCache, utzid);
1.352 + if (idInCache == NULL) {
1.353 + const UChar* key = ZoneMeta::findTimeZoneID(tzid);
1.354 + U_ASSERT(key != NULL);
1.355 + if (key != NULL) {
1.356 + idInCache = (const UChar *)uhash_put(gCanonicalIDCache, (void *)key, (void *)canonicalID, &status);
1.357 + U_ASSERT(idInCache == NULL);
1.358 + }
1.359 + }
1.360 + if (U_SUCCESS(status) && isInputCanonical) {
1.361 + // Also put canonical ID itself into the cache if not exist
1.362 + const UChar *canonicalInCache = (const UChar*)uhash_get(gCanonicalIDCache, canonicalID);
1.363 + if (canonicalInCache == NULL) {
1.364 + canonicalInCache = (const UChar *)uhash_put(gCanonicalIDCache, (void *)canonicalID, (void *)canonicalID, &status);
1.365 + U_ASSERT(canonicalInCache == NULL);
1.366 + }
1.367 + }
1.368 + }
1.369 + umtx_unlock(&gZoneMetaLock);
1.370 + }
1.371 +
1.372 + return canonicalID;
1.373 +}
1.374 +
1.375 +UnicodeString& U_EXPORT2
1.376 +ZoneMeta::getCanonicalCLDRID(const UnicodeString &tzid, UnicodeString &systemID, UErrorCode& status) {
1.377 + const UChar *canonicalID = getCanonicalCLDRID(tzid, status);
1.378 + if (U_FAILURE(status) || canonicalID == NULL) {
1.379 + systemID.setToBogus();
1.380 + return systemID;
1.381 + }
1.382 + systemID.setTo(TRUE, canonicalID, -1);
1.383 + return systemID;
1.384 +}
1.385 +
1.386 +const UChar* U_EXPORT2
1.387 +ZoneMeta::getCanonicalCLDRID(const TimeZone& tz) {
1.388 + if (dynamic_cast<const OlsonTimeZone *>(&tz) != NULL) {
1.389 + // short cut for OlsonTimeZone
1.390 + const OlsonTimeZone *otz = (const OlsonTimeZone*)&tz;
1.391 + return otz->getCanonicalID();
1.392 + }
1.393 + UErrorCode status = U_ZERO_ERROR;
1.394 + UnicodeString tzID;
1.395 + return getCanonicalCLDRID(tz.getID(tzID), status);
1.396 +}
1.397 +
1.398 +static void U_CALLCONV countryInfoVectorsInit(UErrorCode &status) {
1.399 + // Create empty vectors
1.400 + // No deleters for these UVectors, it's a reference to a resource bundle string.
1.401 + gSingleZoneCountries = new UVector(NULL, uhash_compareUChars, status);
1.402 + if (gSingleZoneCountries == NULL) {
1.403 + status = U_MEMORY_ALLOCATION_ERROR;
1.404 + }
1.405 + gMultiZonesCountries = new UVector(NULL, uhash_compareUChars, status);
1.406 + if (gMultiZonesCountries == NULL) {
1.407 + status = U_MEMORY_ALLOCATION_ERROR;
1.408 + }
1.409 +
1.410 + if (U_FAILURE(status)) {
1.411 + delete gSingleZoneCountries;
1.412 + delete gMultiZonesCountries;
1.413 + gSingleZoneCountries = NULL;
1.414 + gMultiZonesCountries = NULL;
1.415 + }
1.416 + ucln_i18n_registerCleanup(UCLN_I18N_ZONEMETA, zoneMeta_cleanup);
1.417 +}
1.418 +
1.419 +
1.420 +UnicodeString& U_EXPORT2
1.421 +ZoneMeta::getCanonicalCountry(const UnicodeString &tzid, UnicodeString &country, UBool *isPrimary /* = NULL */) {
1.422 + if (isPrimary != NULL) {
1.423 + *isPrimary = FALSE;
1.424 + }
1.425 +
1.426 + const UChar *region = TimeZone::getRegion(tzid);
1.427 + if (region != NULL && u_strcmp(gWorld, region) != 0) {
1.428 + country.setTo(region, -1);
1.429 + } else {
1.430 + country.setToBogus();
1.431 + return country;
1.432 + }
1.433 +
1.434 + if (isPrimary != NULL) {
1.435 + char regionBuf[] = {0, 0, 0};
1.436 +
1.437 + // Checking the cached results
1.438 + UErrorCode status = U_ZERO_ERROR;
1.439 + umtx_initOnce(gCountryInfoVectorsInitOnce, &countryInfoVectorsInit, status);
1.440 + if (U_FAILURE(status)) {
1.441 + return country;
1.442 + }
1.443 +
1.444 + // Check if it was already cached
1.445 + UBool cached = FALSE;
1.446 + UBool singleZone = FALSE;
1.447 + umtx_lock(&gZoneMetaLock);
1.448 + {
1.449 + singleZone = cached = gSingleZoneCountries->contains((void*)region);
1.450 + if (!cached) {
1.451 + cached = gMultiZonesCountries->contains((void*)region);
1.452 + }
1.453 + }
1.454 + umtx_unlock(&gZoneMetaLock);
1.455 +
1.456 + if (!cached) {
1.457 + // We need to go through all zones associated with the region.
1.458 + // This is relatively heavy operation.
1.459 +
1.460 + U_ASSERT(u_strlen(region) == 2);
1.461 +
1.462 + u_UCharsToChars(region, regionBuf, 2);
1.463 +
1.464 + StringEnumeration *ids = TimeZone::createTimeZoneIDEnumeration(UCAL_ZONE_TYPE_CANONICAL_LOCATION, regionBuf, NULL, status);
1.465 + int32_t idsLen = ids->count(status);
1.466 + if (U_SUCCESS(status) && idsLen == 1) {
1.467 + // only the single zone is available for the region
1.468 + singleZone = TRUE;
1.469 + }
1.470 + delete ids;
1.471 +
1.472 + // Cache the result
1.473 + umtx_lock(&gZoneMetaLock);
1.474 + {
1.475 + UErrorCode ec = U_ZERO_ERROR;
1.476 + if (singleZone) {
1.477 + if (!gSingleZoneCountries->contains((void*)region)) {
1.478 + gSingleZoneCountries->addElement((void*)region, ec);
1.479 + }
1.480 + } else {
1.481 + if (!gMultiZonesCountries->contains((void*)region)) {
1.482 + gMultiZonesCountries->addElement((void*)region, ec);
1.483 + }
1.484 + }
1.485 + }
1.486 + umtx_unlock(&gZoneMetaLock);
1.487 + }
1.488 +
1.489 + if (singleZone) {
1.490 + *isPrimary = TRUE;
1.491 + } else {
1.492 + // Note: We may cache the primary zone map in future.
1.493 +
1.494 + // Even a country has multiple zones, one of them might be
1.495 + // dominant and treated as a primary zone
1.496 + int32_t idLen = 0;
1.497 + if (regionBuf[0] == 0) {
1.498 + u_UCharsToChars(region, regionBuf, 2);
1.499 + }
1.500 +
1.501 + UResourceBundle *rb = ures_openDirect(NULL, gMetaZones, &status);
1.502 + ures_getByKey(rb, gPrimaryZonesTag, rb, &status);
1.503 + const UChar *primaryZone = ures_getStringByKey(rb, regionBuf, &idLen, &status);
1.504 + if (U_SUCCESS(status)) {
1.505 + if (tzid.compare(primaryZone, idLen) == 0) {
1.506 + *isPrimary = TRUE;
1.507 + } else {
1.508 + // The given ID might not be a canonical ID
1.509 + UnicodeString canonicalID;
1.510 + TimeZone::getCanonicalID(tzid, canonicalID, status);
1.511 + if (U_SUCCESS(status) && canonicalID.compare(primaryZone, idLen) == 0) {
1.512 + *isPrimary = TRUE;
1.513 + }
1.514 + }
1.515 + }
1.516 + ures_close(rb);
1.517 + }
1.518 + }
1.519 +
1.520 + return country;
1.521 +}
1.522 +
1.523 +UnicodeString& U_EXPORT2
1.524 +ZoneMeta::getMetazoneID(const UnicodeString &tzid, UDate date, UnicodeString &result) {
1.525 + UBool isSet = FALSE;
1.526 + const UVector *mappings = getMetazoneMappings(tzid);
1.527 + if (mappings != NULL) {
1.528 + for (int32_t i = 0; i < mappings->size(); i++) {
1.529 + OlsonToMetaMappingEntry *mzm = (OlsonToMetaMappingEntry*)mappings->elementAt(i);
1.530 + if (mzm->from <= date && mzm->to > date) {
1.531 + result.setTo(mzm->mzid, -1);
1.532 + isSet = TRUE;
1.533 + break;
1.534 + }
1.535 + }
1.536 + }
1.537 + if (!isSet) {
1.538 + result.setToBogus();
1.539 + }
1.540 + return result;
1.541 +}
1.542 +
1.543 +static void U_CALLCONV olsonToMetaInit(UErrorCode &status) {
1.544 + U_ASSERT(gOlsonToMeta == NULL);
1.545 + ucln_i18n_registerCleanup(UCLN_I18N_ZONEMETA, zoneMeta_cleanup);
1.546 + gOlsonToMeta = uhash_open(uhash_hashUChars, uhash_compareUChars, NULL, &status);
1.547 + if (U_FAILURE(status)) {
1.548 + gOlsonToMeta = NULL;
1.549 + } else {
1.550 + uhash_setKeyDeleter(gOlsonToMeta, deleteUCharString);
1.551 + uhash_setValueDeleter(gOlsonToMeta, deleteUVector);
1.552 + }
1.553 +}
1.554 +
1.555 +
1.556 +const UVector* U_EXPORT2
1.557 +ZoneMeta::getMetazoneMappings(const UnicodeString &tzid) {
1.558 + UErrorCode status = U_ZERO_ERROR;
1.559 + UChar tzidUChars[ZID_KEY_MAX + 1];
1.560 + tzid.extract(tzidUChars, ZID_KEY_MAX + 1, status);
1.561 + if (U_FAILURE(status) || status == U_STRING_NOT_TERMINATED_WARNING) {
1.562 + return NULL;
1.563 + }
1.564 +
1.565 + umtx_initOnce(gOlsonToMetaInitOnce, &olsonToMetaInit, status);
1.566 + if (U_FAILURE(status)) {
1.567 + return NULL;
1.568 + }
1.569 +
1.570 + // get the mapping from cache
1.571 + const UVector *result = NULL;
1.572 +
1.573 + umtx_lock(&gZoneMetaLock);
1.574 + {
1.575 + result = (UVector*) uhash_get(gOlsonToMeta, tzidUChars);
1.576 + }
1.577 + umtx_unlock(&gZoneMetaLock);
1.578 +
1.579 + if (result != NULL) {
1.580 + return result;
1.581 + }
1.582 +
1.583 + // miss the cache - create new one
1.584 + UVector *tmpResult = createMetazoneMappings(tzid);
1.585 + if (tmpResult == NULL) {
1.586 + // not available
1.587 + return NULL;
1.588 + }
1.589 +
1.590 + // put the new one into the cache
1.591 + umtx_lock(&gZoneMetaLock);
1.592 + {
1.593 + // make sure it's already created
1.594 + result = (UVector*) uhash_get(gOlsonToMeta, tzidUChars);
1.595 + if (result == NULL) {
1.596 + // add the one just created
1.597 + int32_t tzidLen = tzid.length() + 1;
1.598 + UChar *key = (UChar*)uprv_malloc(tzidLen * sizeof(UChar));
1.599 + if (key == NULL) {
1.600 + // memory allocation error.. just return NULL
1.601 + result = NULL;
1.602 + delete tmpResult;
1.603 + } else {
1.604 + tzid.extract(key, tzidLen, status);
1.605 + uhash_put(gOlsonToMeta, key, tmpResult, &status);
1.606 + if (U_FAILURE(status)) {
1.607 + // delete the mapping
1.608 + result = NULL;
1.609 + delete tmpResult;
1.610 + } else {
1.611 + result = tmpResult;
1.612 + }
1.613 + }
1.614 + } else {
1.615 + // another thread already put the one
1.616 + delete tmpResult;
1.617 + }
1.618 + }
1.619 + umtx_unlock(&gZoneMetaLock);
1.620 +
1.621 + return result;
1.622 +}
1.623 +
1.624 +UVector*
1.625 +ZoneMeta::createMetazoneMappings(const UnicodeString &tzid) {
1.626 + UVector *mzMappings = NULL;
1.627 + UErrorCode status = U_ZERO_ERROR;
1.628 +
1.629 + UnicodeString canonicalID;
1.630 + UResourceBundle *rb = ures_openDirect(NULL, gMetaZones, &status);
1.631 + ures_getByKey(rb, gMetazoneInfo, rb, &status);
1.632 + getCanonicalCLDRID(tzid, canonicalID, status);
1.633 +
1.634 + if (U_SUCCESS(status)) {
1.635 + char tzKey[ZID_KEY_MAX + 1];
1.636 + int32_t tzKeyLen = canonicalID.extract(0, canonicalID.length(), tzKey, sizeof(tzKey), US_INV);
1.637 + tzKey[tzKeyLen] = 0;
1.638 +
1.639 + // tzid keys are using ':' as separators
1.640 + char *p = tzKey;
1.641 + while (*p) {
1.642 + if (*p == '/') {
1.643 + *p = ':';
1.644 + }
1.645 + p++;
1.646 + }
1.647 +
1.648 + ures_getByKey(rb, tzKey, rb, &status);
1.649 +
1.650 + if (U_SUCCESS(status)) {
1.651 + UResourceBundle *mz = NULL;
1.652 + while (ures_hasNext(rb)) {
1.653 + mz = ures_getNextResource(rb, mz, &status);
1.654 +
1.655 + const UChar *mz_name = ures_getStringByIndex(mz, 0, NULL, &status);
1.656 + const UChar *mz_from = gDefaultFrom;
1.657 + const UChar *mz_to = gDefaultTo;
1.658 +
1.659 + if (ures_getSize(mz) == 3) {
1.660 + mz_from = ures_getStringByIndex(mz, 1, NULL, &status);
1.661 + mz_to = ures_getStringByIndex(mz, 2, NULL, &status);
1.662 + }
1.663 +
1.664 + if(U_FAILURE(status)){
1.665 + status = U_ZERO_ERROR;
1.666 + continue;
1.667 + }
1.668 + // We do not want to use SimpleDateformat to parse boundary dates,
1.669 + // because this code could be triggered by the initialization code
1.670 + // used by SimpleDateFormat.
1.671 + UDate from = parseDate(mz_from, status);
1.672 + UDate to = parseDate(mz_to, status);
1.673 + if (U_FAILURE(status)) {
1.674 + status = U_ZERO_ERROR;
1.675 + continue;
1.676 + }
1.677 +
1.678 + OlsonToMetaMappingEntry *entry = (OlsonToMetaMappingEntry*)uprv_malloc(sizeof(OlsonToMetaMappingEntry));
1.679 + if (entry == NULL) {
1.680 + status = U_MEMORY_ALLOCATION_ERROR;
1.681 + break;
1.682 + }
1.683 + entry->mzid = mz_name;
1.684 + entry->from = from;
1.685 + entry->to = to;
1.686 +
1.687 + if (mzMappings == NULL) {
1.688 + mzMappings = new UVector(deleteOlsonToMetaMappingEntry, NULL, status);
1.689 + if (U_FAILURE(status)) {
1.690 + delete mzMappings;
1.691 + deleteOlsonToMetaMappingEntry(entry);
1.692 + uprv_free(entry);
1.693 + break;
1.694 + }
1.695 + }
1.696 +
1.697 + mzMappings->addElement(entry, status);
1.698 + if (U_FAILURE(status)) {
1.699 + break;
1.700 + }
1.701 + }
1.702 + ures_close(mz);
1.703 + if (U_FAILURE(status)) {
1.704 + if (mzMappings != NULL) {
1.705 + delete mzMappings;
1.706 + mzMappings = NULL;
1.707 + }
1.708 + }
1.709 + }
1.710 + }
1.711 + ures_close(rb);
1.712 + return mzMappings;
1.713 +}
1.714 +
1.715 +UnicodeString& U_EXPORT2
1.716 +ZoneMeta::getZoneIdByMetazone(const UnicodeString &mzid, const UnicodeString ®ion, UnicodeString &result) {
1.717 + UErrorCode status = U_ZERO_ERROR;
1.718 + const UChar *tzid = NULL;
1.719 + int32_t tzidLen = 0;
1.720 + char keyBuf[ZID_KEY_MAX + 1];
1.721 + int32_t keyLen = 0;
1.722 +
1.723 + if (mzid.length() > ZID_KEY_MAX) {
1.724 + result.setToBogus();
1.725 + return result;
1.726 + }
1.727 +
1.728 + keyLen = mzid.extract(0, mzid.length(), keyBuf, ZID_KEY_MAX + 1, US_INV);
1.729 + keyBuf[keyLen] = 0;
1.730 +
1.731 + UResourceBundle *rb = ures_openDirect(NULL, gMetaZones, &status);
1.732 + ures_getByKey(rb, gMapTimezonesTag, rb, &status);
1.733 + ures_getByKey(rb, keyBuf, rb, &status);
1.734 +
1.735 + if (U_SUCCESS(status)) {
1.736 + // check region mapping
1.737 + if (region.length() == 2 || region.length() == 3) {
1.738 + keyLen = region.extract(0, region.length(), keyBuf, ZID_KEY_MAX + 1, US_INV);
1.739 + keyBuf[keyLen] = 0;
1.740 + tzid = ures_getStringByKey(rb, keyBuf, &tzidLen, &status);
1.741 + if (status == U_MISSING_RESOURCE_ERROR) {
1.742 + status = U_ZERO_ERROR;
1.743 + }
1.744 + }
1.745 + if (U_SUCCESS(status) && tzid == NULL) {
1.746 + // try "001"
1.747 + tzid = ures_getStringByKey(rb, gWorldTag, &tzidLen, &status);
1.748 + }
1.749 + }
1.750 + ures_close(rb);
1.751 +
1.752 + if (tzid == NULL) {
1.753 + result.setToBogus();
1.754 + } else {
1.755 + result.setTo(tzid, tzidLen);
1.756 + }
1.757 +
1.758 + return result;
1.759 +}
1.760 +
1.761 +static void U_CALLCONV initAvailableMetaZoneIDs () {
1.762 + U_ASSERT(gMetaZoneIDs == NULL);
1.763 + U_ASSERT(gMetaZoneIDTable == NULL);
1.764 + ucln_i18n_registerCleanup(UCLN_I18N_ZONEMETA, zoneMeta_cleanup);
1.765 +
1.766 + UErrorCode status = U_ZERO_ERROR;
1.767 + gMetaZoneIDTable = uhash_open(uhash_hashUnicodeString, uhash_compareUnicodeString, NULL, &status);
1.768 + if (U_FAILURE(status) || gMetaZoneIDTable == NULL) {
1.769 + gMetaZoneIDTable = NULL;
1.770 + return;
1.771 + }
1.772 + uhash_setKeyDeleter(gMetaZoneIDTable, uprv_deleteUObject);
1.773 + // No valueDeleter, because the vector maintain the value objects
1.774 + gMetaZoneIDs = new UVector(NULL, uhash_compareUChars, status);
1.775 + if (U_FAILURE(status) || gMetaZoneIDs == NULL) {
1.776 + gMetaZoneIDs = NULL;
1.777 + uhash_close(gMetaZoneIDTable);
1.778 + gMetaZoneIDTable = NULL;
1.779 + return;
1.780 + }
1.781 + gMetaZoneIDs->setDeleter(uprv_free);
1.782 +
1.783 + UResourceBundle *rb = ures_openDirect(NULL, gMetaZones, &status);
1.784 + UResourceBundle *bundle = ures_getByKey(rb, gMapTimezonesTag, NULL, &status);
1.785 + UResourceBundle res;
1.786 + ures_initStackObject(&res);
1.787 + while (U_SUCCESS(status) && ures_hasNext(bundle)) {
1.788 + ures_getNextResource(bundle, &res, &status);
1.789 + if (U_FAILURE(status)) {
1.790 + break;
1.791 + }
1.792 + const char *mzID = ures_getKey(&res);
1.793 + int32_t len = uprv_strlen(mzID);
1.794 + UChar *uMzID = (UChar*)uprv_malloc(sizeof(UChar) * (len + 1));
1.795 + if (uMzID == NULL) {
1.796 + status = U_MEMORY_ALLOCATION_ERROR;
1.797 + break;
1.798 + }
1.799 + u_charsToUChars(mzID, uMzID, len);
1.800 + uMzID[len] = 0;
1.801 + UnicodeString *usMzID = new UnicodeString(uMzID);
1.802 + if (uhash_get(gMetaZoneIDTable, usMzID) == NULL) {
1.803 + gMetaZoneIDs->addElement((void *)uMzID, status);
1.804 + uhash_put(gMetaZoneIDTable, (void *)usMzID, (void *)uMzID, &status);
1.805 + } else {
1.806 + uprv_free(uMzID);
1.807 + delete usMzID;
1.808 + }
1.809 + }
1.810 + ures_close(&res);
1.811 + ures_close(bundle);
1.812 + ures_close(rb);
1.813 +
1.814 + if (U_FAILURE(status)) {
1.815 + uhash_close(gMetaZoneIDTable);
1.816 + delete gMetaZoneIDs;
1.817 + gMetaZoneIDTable = NULL;
1.818 + gMetaZoneIDs = NULL;
1.819 + }
1.820 +}
1.821 +
1.822 +const UVector*
1.823 +ZoneMeta::getAvailableMetazoneIDs() {
1.824 + umtx_initOnce(gMetaZoneIDsInitOnce, &initAvailableMetaZoneIDs);
1.825 + return gMetaZoneIDs;
1.826 +}
1.827 +
1.828 +const UChar*
1.829 +ZoneMeta::findMetaZoneID(const UnicodeString& mzid) {
1.830 + umtx_initOnce(gMetaZoneIDsInitOnce, &initAvailableMetaZoneIDs);
1.831 + if (gMetaZoneIDTable == NULL) {
1.832 + return NULL;
1.833 + }
1.834 + return (const UChar*)uhash_get(gMetaZoneIDTable, &mzid);
1.835 +}
1.836 +
1.837 +const UChar*
1.838 +ZoneMeta::findTimeZoneID(const UnicodeString& tzid) {
1.839 + return TimeZone::findID(tzid);
1.840 +}
1.841 +
1.842 +
1.843 +TimeZone*
1.844 +ZoneMeta::createCustomTimeZone(int32_t offset) {
1.845 + UBool negative = FALSE;
1.846 + int32_t tmp = offset;
1.847 + if (offset < 0) {
1.848 + negative = TRUE;
1.849 + tmp = -offset;
1.850 + }
1.851 + int32_t hour, min, sec;
1.852 +
1.853 + tmp /= 1000;
1.854 + sec = tmp % 60;
1.855 + tmp /= 60;
1.856 + min = tmp % 60;
1.857 + hour = tmp / 60;
1.858 +
1.859 + UnicodeString zid;
1.860 + formatCustomID(hour, min, sec, negative, zid);
1.861 + return new SimpleTimeZone(offset, zid);
1.862 +}
1.863 +
1.864 +UnicodeString&
1.865 +ZoneMeta::formatCustomID(uint8_t hour, uint8_t min, uint8_t sec, UBool negative, UnicodeString& id) {
1.866 + // Create normalized time zone ID - GMT[+|-]HH:mm[:ss]
1.867 + id.setTo(gCustomTzPrefix, -1);
1.868 + if (hour != 0 || min != 0) {
1.869 + if (negative) {
1.870 + id.append((UChar)0x2D); // '-'
1.871 + } else {
1.872 + id.append((UChar)0x2B); // '+'
1.873 + }
1.874 + // Always use US-ASCII digits
1.875 + id.append((UChar)(0x30 + (hour%100)/10));
1.876 + id.append((UChar)(0x30 + (hour%10)));
1.877 + id.append((UChar)0x3A); // ':'
1.878 + id.append((UChar)(0x30 + (min%100)/10));
1.879 + id.append((UChar)(0x30 + (min%10)));
1.880 + if (sec != 0) {
1.881 + id.append((UChar)0x3A); // ':'
1.882 + id.append((UChar)(0x30 + (sec%100)/10));
1.883 + id.append((UChar)(0x30 + (sec%10)));
1.884 + }
1.885 + }
1.886 + return id;
1.887 +}
1.888 +
1.889 +const UChar*
1.890 +ZoneMeta::getShortID(const TimeZone& tz) {
1.891 + const UChar* canonicalID = NULL;
1.892 + if (dynamic_cast<const OlsonTimeZone *>(&tz) != NULL) {
1.893 + // short cut for OlsonTimeZone
1.894 + const OlsonTimeZone *otz = (const OlsonTimeZone*)&tz;
1.895 + canonicalID = otz->getCanonicalID();
1.896 + }
1.897 + if (canonicalID == NULL) {
1.898 + return NULL;
1.899 + }
1.900 + return getShortIDFromCanonical(canonicalID);
1.901 +}
1.902 +
1.903 +const UChar*
1.904 +ZoneMeta::getShortID(const UnicodeString& id) {
1.905 + UErrorCode status = U_ZERO_ERROR;
1.906 + const UChar* canonicalID = ZoneMeta::getCanonicalCLDRID(id, status);
1.907 + if (U_FAILURE(status) || canonicalID == NULL) {
1.908 + return NULL;
1.909 + }
1.910 + return ZoneMeta::getShortIDFromCanonical(canonicalID);
1.911 +}
1.912 +
1.913 +const UChar*
1.914 +ZoneMeta::getShortIDFromCanonical(const UChar* canonicalID) {
1.915 + const UChar* shortID = NULL;
1.916 + int32_t len = u_strlen(canonicalID);
1.917 + char tzidKey[ZID_KEY_MAX + 1];
1.918 +
1.919 + u_UCharsToChars(canonicalID, tzidKey, len);
1.920 + tzidKey[len] = (char) 0; // Make sure it is null terminated.
1.921 +
1.922 + // replace '/' with ':'
1.923 + char *p = tzidKey;
1.924 + while (*p++) {
1.925 + if (*p == '/') {
1.926 + *p = ':';
1.927 + }
1.928 + }
1.929 +
1.930 + UErrorCode status = U_ZERO_ERROR;
1.931 + UResourceBundle *rb = ures_openDirect(NULL, gKeyTypeData, &status);
1.932 + ures_getByKey(rb, gTypeMapTag, rb, &status);
1.933 + ures_getByKey(rb, gTimezoneTag, rb, &status);
1.934 + shortID = ures_getStringByKey(rb, tzidKey, NULL, &status);
1.935 + ures_close(rb);
1.936 +
1.937 + return shortID;
1.938 +}
1.939 +
1.940 +U_NAMESPACE_END
1.941 +
1.942 +#endif /* #if !UCONFIG_NO_FORMATTING */
