/*
*******************************************************************************
-* Copyright (C) 1997-2010, International Business Machines Corporation and *
-* others. All Rights Reserved. *
+* Copyright (C) 1997-2015, International Business Machines Corporation and
+* others. All Rights Reserved.
*******************************************************************************
*
* File TIMEZONE.CPP
* available IDs code. Misc. cleanup.
*********************************************************************************/
-#include <typeinfo> // for 'typeid' to work
+#include "utypeinfo.h" // for 'typeid' to work
#include "unicode/utypes.h"
#include "unicode/ustring.h"
+#include "uassert.h"
+#include "ustr_imp.h"
#ifdef U_DEBUG_TZ
# include <stdio.h>
#if !UCONFIG_NO_FORMATTING
#include "unicode/simpletz.h"
-#include "unicode/smpdtfmt.h"
#include "unicode/calendar.h"
#include "unicode/gregocal.h"
#include "unicode/ures.h"
+#include "unicode/tzfmt.h"
+#include "unicode/numfmt.h"
#include "gregoimp.h"
#include "uresimp.h" // struct UResourceBundle
#include "olsontz.h"
static const UChar WORLD[] = {0x30, 0x30, 0x31, 0x00}; /* "001" */
static const UChar GMT_ID[] = {0x47, 0x4D, 0x54, 0x00}; /* "GMT" */
-static const UChar Z_STR[] = {0x7A, 0x00}; /* "z" */
-static const UChar ZZZZ_STR[] = {0x7A, 0x7A, 0x7A, 0x7A, 0x00}; /* "zzzz" */
-static const UChar Z_UC_STR[] = {0x5A, 0x00}; /* "Z" */
-static const UChar ZZZZ_UC_STR[] = {0x5A, 0x5A, 0x5A, 0x5A, 0x00}; /* "ZZZZ" */
-static const UChar V_STR[] = {0x76, 0x00}; /* "v" */
-static const UChar VVVV_STR[] = {0x76, 0x76, 0x76, 0x76, 0x00}; /* "vvvv" */
-static const UChar V_UC_STR[] = {0x56, 0x00}; /* "V" */
-static const UChar VVVV_UC_STR[] = {0x56, 0x56, 0x56, 0x56, 0x00}; /* "VVVV" */
+static const UChar UNKNOWN_ZONE_ID[] = {0x45, 0x74, 0x63, 0x2F, 0x55, 0x6E, 0x6B, 0x6E, 0x6F, 0x77, 0x6E, 0x00}; /* "Etc/Unknown" */
static const int32_t GMT_ID_LENGTH = 3;
+static const int32_t UNKNOWN_ZONE_ID_LENGTH = 11;
+
+static icu::TimeZone* DEFAULT_ZONE = NULL;
+static icu::UInitOnce gDefaultZoneInitOnce = U_INITONCE_INITIALIZER;
-static UMTX LOCK;
-static UMTX TZSET_LOCK;
-static U_NAMESPACE_QUALIFIER TimeZone* DEFAULT_ZONE = NULL;
-static U_NAMESPACE_QUALIFIER TimeZone* _GMT = NULL; // cf. TimeZone::GMT
+static icu::TimeZone* _GMT = NULL;
+static icu::TimeZone* _UNKNOWN_ZONE = NULL;
+static icu::UInitOnce gStaticZonesInitOnce = U_INITONCE_INITIALIZER;
static char TZDATA_VERSION[16];
-static UBool TZDataVersionInitialized = FALSE;
+static icu::UInitOnce gTZDataVersionInitOnce = U_INITONCE_INITIALIZER;
+
+static int32_t* MAP_SYSTEM_ZONES = NULL;
+static int32_t* MAP_CANONICAL_SYSTEM_ZONES = NULL;
+static int32_t* MAP_CANONICAL_SYSTEM_LOCATION_ZONES = NULL;
+
+static int32_t LEN_SYSTEM_ZONES = 0;
+static int32_t LEN_CANONICAL_SYSTEM_ZONES = 0;
+static int32_t LEN_CANONICAL_SYSTEM_LOCATION_ZONES = 0;
+
+static icu::UInitOnce gSystemZonesInitOnce = U_INITONCE_INITIALIZER;
+static icu::UInitOnce gCanonicalZonesInitOnce = U_INITONCE_INITIALIZER;
+static icu::UInitOnce gCanonicalLocationZonesInitOnce = U_INITONCE_INITIALIZER;
U_CDECL_BEGIN
static UBool U_CALLCONV timeZone_cleanup(void)
{
+ U_NAMESPACE_USE
delete DEFAULT_ZONE;
DEFAULT_ZONE = NULL;
+ gDefaultZoneInitOnce.reset();
delete _GMT;
_GMT = NULL;
+ delete _UNKNOWN_ZONE;
+ _UNKNOWN_ZONE = NULL;
+ gStaticZonesInitOnce.reset();
uprv_memset(TZDATA_VERSION, 0, sizeof(TZDATA_VERSION));
- TZDataVersionInitialized = FALSE;
+ gTZDataVersionInitOnce.reset();
- if (LOCK) {
- umtx_destroy(&LOCK);
- LOCK = NULL;
- }
- if (TZSET_LOCK) {
- umtx_destroy(&TZSET_LOCK);
- TZSET_LOCK = NULL;
- }
+ LEN_SYSTEM_ZONES = 0;
+ uprv_free(MAP_SYSTEM_ZONES);
+ MAP_SYSTEM_ZONES = 0;
+ gSystemZonesInitOnce.reset();
+
+ LEN_CANONICAL_SYSTEM_ZONES = 0;
+ uprv_free(MAP_CANONICAL_SYSTEM_ZONES);
+ MAP_CANONICAL_SYSTEM_ZONES = 0;
+ gCanonicalZonesInitOnce.reset();
+
+ LEN_CANONICAL_SYSTEM_LOCATION_ZONES = 0;
+ uprv_free(MAP_CANONICAL_SYSTEM_LOCATION_ZONES);
+ MAP_CANONICAL_SYSTEM_LOCATION_ZONES = 0;
+ gCanonicalLocationZonesInitOnce.reset();
return TRUE;
}
U_NAMESPACE_BEGIN
-/**
- * The Olson data is stored the "zoneinfo" resource bundle.
- * Sub-resources are organized into three ranges of data: Zones, final
- * rules, and country tables. There is also a meta-data resource
- * which has 3 integers: The number of zones, rules, and countries,
- * respectively. The country count includes the non-country 'Default'.
- */
-static int32_t OLSON_ZONE_COUNT = 0; // count of zones
-
-/**
- * Given a pointer to an open "zoneinfo" resource, load up the Olson
- * meta-data. Return TRUE if successful.
- */
-static UBool getOlsonMeta(const UResourceBundle* top) {
- if (OLSON_ZONE_COUNT == 0) {
- UErrorCode ec = U_ZERO_ERROR;
- UResourceBundle res;
- ures_initStackObject(&res);
- ures_getByKey(top, kZONES, &res, &ec);
- if(U_SUCCESS(ec)) {
- OLSON_ZONE_COUNT = ures_getSize(&res);
- U_DEBUG_TZ_MSG(("OZC%d\n",OLSON_ZONE_COUNT));
- }
- ures_close(&res);
- }
- return (OLSON_ZONE_COUNT > 0);
-}
-
-/**
- * Load up the Olson meta-data. Return TRUE if successful.
- */
-static UBool getOlsonMeta() {
- if (OLSON_ZONE_COUNT == 0) {
- UErrorCode ec = U_ZERO_ERROR;
- UResourceBundle *top = ures_openDirect(0, kZONEINFO, &ec);
- if (U_SUCCESS(ec)) {
- getOlsonMeta(top);
- }
- ures_close(top);
- }
- return (OLSON_ZONE_COUNT > 0);
-}
-
static int32_t findInStringArray(UResourceBundle* array, const UnicodeString& id, UErrorCode &status)
{
UnicodeString copy;
// Dereference if this is an alias. Docs say result should be 1
// but it is 0 in 2.8 (?).
U_DEBUG_TZ_MSG(("Loading zone '%s' (%s, size %d) - %s\n", buf, ures_getKey((UResourceBundle*)&res), ures_getSize(&res), u_errorName(ec)));
- if (ures_getType(&res) == URES_INT && getOlsonMeta(top)) {
+ if (ures_getType(&res) == URES_INT) {
int32_t deref = ures_getInt(&res, &ec) + 0;
U_DEBUG_TZ_MSG(("getInt: %s - type is %d\n", u_errorName(ec), ures_getType(&res)));
UResourceBundle *ares = ures_getByKey(top, kZONES, NULL, &ec); // dereference Zones section
// -------------------------------------
-const TimeZone* U_EXPORT2
-TimeZone::getGMT(void)
-{
- UBool needsInit;
- UMTX_CHECK(&LOCK, (_GMT == NULL), needsInit); /* This is here to prevent race conditions. */
+namespace {
+void U_CALLCONV initStaticTimeZones() {
// Initialize _GMT independently of other static data; it should
// be valid even if we can't load the time zone UDataMemory.
- if (needsInit) {
- SimpleTimeZone *tmpGMT = new SimpleTimeZone(0, UnicodeString(TRUE, GMT_ID, GMT_ID_LENGTH));
- umtx_lock(&LOCK);
- if (_GMT == 0) {
- _GMT = tmpGMT;
- tmpGMT = NULL;
- }
- umtx_unlock(&LOCK);
- ucln_i18n_registerCleanup(UCLN_I18N_TIMEZONE, timeZone_cleanup);
- delete tmpGMT;
- }
+ ucln_i18n_registerCleanup(UCLN_I18N_TIMEZONE, timeZone_cleanup);
+ _UNKNOWN_ZONE = new SimpleTimeZone(0, UnicodeString(TRUE, UNKNOWN_ZONE_ID, UNKNOWN_ZONE_ID_LENGTH));
+ _GMT = new SimpleTimeZone(0, UnicodeString(TRUE, GMT_ID, GMT_ID_LENGTH));
+}
+
+} // anonymous namespace
+
+const TimeZone& U_EXPORT2
+TimeZone::getUnknown()
+{
+ umtx_initOnce(gStaticZonesInitOnce, &initStaticTimeZones);
+ return *_UNKNOWN_ZONE;
+}
+
+const TimeZone* U_EXPORT2
+TimeZone::getGMT(void)
+{
+ umtx_initOnce(gStaticZonesInitOnce, &initStaticTimeZones);
return _GMT;
}
// -------------------------------------
+namespace {
+TimeZone*
+createSystemTimeZone(const UnicodeString& id, UErrorCode& ec) {
+ if (U_FAILURE(ec)) {
+ return NULL;
+ }
+ TimeZone* z = 0;
+ UResourceBundle res;
+ ures_initStackObject(&res);
+ U_DEBUG_TZ_MSG(("pre-err=%s\n", u_errorName(ec)));
+ UResourceBundle *top = openOlsonResource(id, res, ec);
+ U_DEBUG_TZ_MSG(("post-err=%s\n", u_errorName(ec)));
+ if (U_SUCCESS(ec)) {
+ z = new OlsonTimeZone(top, &res, id, ec);
+ if (z == NULL) {
+ U_DEBUG_TZ_MSG(("cstz: olson time zone failed to initialize - err %s\n", u_errorName(ec)));
+ }
+ }
+ ures_close(&res);
+ ures_close(top);
+ if (U_FAILURE(ec)) {
+ U_DEBUG_TZ_MSG(("cstz: failed to create, err %s\n", u_errorName(ec)));
+ delete z;
+ z = 0;
+ }
+ return z;
+}
+
+/**
+ * Lookup the given name in our system zone table. If found,
+ * instantiate a new zone of that name and return it. If not
+ * found, return 0.
+ */
+TimeZone*
+createSystemTimeZone(const UnicodeString& id) {
+ UErrorCode ec = U_ZERO_ERROR;
+ return createSystemTimeZone(id, ec);
+}
+
+}
+
TimeZone* U_EXPORT2
TimeZone::createTimeZone(const UnicodeString& ID)
{
*/
TimeZone* result = createSystemTimeZone(ID);
- if (result == 0) {
+ if (result == NULL) {
U_DEBUG_TZ_MSG(("failed to load system time zone with id - falling to custom"));
result = createCustomTimeZone(ID);
}
- if (result == 0) {
- U_DEBUG_TZ_MSG(("failed to load time zone with id - falling to GMT"));
- const TimeZone* temptz = getGMT();
- if (temptz == NULL) {
- result = NULL;
+ if (result == NULL) {
+ U_DEBUG_TZ_MSG(("failed to load time zone with id - falling to Etc/Unknown(GMT)"));
+ const TimeZone& unknown = getUnknown();
+ if (_UNKNOWN_ZONE == NULL) { // Cannot test (&unknown == NULL) because the
+ U_DEBUG_TZ_MSG(("failed to getUnknown()")); // behavior of NULL references is undefined.
} else {
- result = temptz->clone();
+ result = unknown.clone();
}
}
return result;
}
-/**
- * Lookup the given name in our system zone table. If found,
- * instantiate a new zone of that name and return it. If not
- * found, return 0.
- */
-TimeZone*
-TimeZone::createSystemTimeZone(const UnicodeString& id) {
- TimeZone* z = 0;
- UErrorCode ec = U_ZERO_ERROR;
- UResourceBundle res;
- ures_initStackObject(&res);
- U_DEBUG_TZ_MSG(("pre-err=%s\n", u_errorName(ec)));
- UResourceBundle *top = openOlsonResource(id, res, ec);
- U_DEBUG_TZ_MSG(("post-err=%s\n", u_errorName(ec)));
- if (U_SUCCESS(ec)) {
- z = new OlsonTimeZone(top, &res, ec);
- if (z) {
- z->setID(id);
- } else {
- U_DEBUG_TZ_MSG(("cstz: olson time zone failed to initialize - err %s\n", u_errorName(ec)));
- }
- }
- ures_close(&res);
- ures_close(top);
- if (U_FAILURE(ec)) {
- U_DEBUG_TZ_MSG(("cstz: failed to create, err %s\n", u_errorName(ec)));
- delete z;
- z = 0;
- }
- return z;
-}
-
// -------------------------------------
-/**
- * Initialize DEFAULT_ZONE from the system default time zone. The
- * caller should confirm that DEFAULT_ZONE is NULL before calling.
- * Upon return, DEFAULT_ZONE will not be NULL, unless operator new()
- * returns NULL.
- *
- * Must be called OUTSIDE mutex.
- */
-void
-TimeZone::initDefault()
+TimeZone* U_EXPORT2
+TimeZone::detectHostTimeZone()
{
// We access system timezone data through TPlatformUtilities,
// including tzset(), timezone, and tzname[].
// First, try to create a system timezone, based
// on the string ID in tzname[0].
- {
- // NOTE: Local mutex here. TimeZone mutex below
- // mutexed to avoid threading issues in the platform functions.
- // Some of the locale/timezone OS functions may not be thread safe,
- // so the intent is that any setting from anywhere within ICU
- // happens while the ICU mutex is held.
- // The operating system might actually use ICU to implement timezones.
- // So we may have ICU calling ICU here, like on AIX.
- // In order to prevent a double lock of a non-reentrant mutex in a
- // different part of ICU, we use TZSET_LOCK to allow only one instance
- // of ICU to query these thread unsafe OS functions at any given time.
- Mutex lock(&TZSET_LOCK);
-
- ucln_i18n_registerCleanup(UCLN_I18N_TIMEZONE, timeZone_cleanup);
- uprv_tzset(); // Initialize tz... system data
- // Get the timezone ID from the host. This function should do
- // any required host-specific remapping; e.g., on Windows this
- // function maps the Date and Time control panel setting to an
- // ICU timezone ID.
- hostID = uprv_tzname(0);
+ uprv_tzset(); // Initialize tz... system data
- // Invert sign because UNIX semantics are backwards
- rawOffset = uprv_timezone() * -U_MILLIS_PER_SECOND;
- }
+ // Get the timezone ID from the host. This function should do
+ // any required host-specific remapping; e.g., on Windows this
+ // function maps the Date and Time control panel setting to an
+ // ICU timezone ID.
+ hostID = uprv_tzname(0);
- UBool initialized;
- UMTX_CHECK(&LOCK, (DEFAULT_ZONE != NULL), initialized);
- if (initialized) {
- /* Hrmph? Either a race condition happened, or tzset initialized ICU. */
- return;
- }
+ // Invert sign because UNIX semantics are backwards
+ rawOffset = uprv_timezone() * -U_MILLIS_PER_SECOND;
- TimeZone* default_zone = NULL;
+ TimeZone* hostZone = NULL;
/* Make sure that the string is NULL terminated to prevent BoundsChecker/Purify warnings. */
UnicodeString hostStrID(hostID, -1, US_INV);
hostStrID.append((UChar)0);
hostStrID.truncate(hostStrID.length()-1);
- default_zone = createSystemTimeZone(hostStrID);
+ hostZone = createSystemTimeZone(hostStrID);
-#ifdef U_WINDOWS
+#if U_PLATFORM_USES_ONLY_WIN32_API
// hostID points to a heap-allocated location on Windows.
uprv_free(const_cast<char *>(hostID));
#endif
int32_t hostIDLen = hostStrID.length();
- if (default_zone != NULL && rawOffset != default_zone->getRawOffset()
+ if (hostZone != NULL && rawOffset != hostZone->getRawOffset()
&& (3 <= hostIDLen && hostIDLen <= 4))
{
// Uh oh. This probably wasn't a good id.
// It was probably an ambiguous abbreviation
- delete default_zone;
- default_zone = NULL;
+ delete hostZone;
+ hostZone = NULL;
}
// Construct a fixed standard zone with the host's ID
// and raw offset.
- if (default_zone == NULL) {
- default_zone = new SimpleTimeZone(rawOffset, hostStrID);
+ if (hostZone == NULL) {
+ hostZone = new SimpleTimeZone(rawOffset, hostStrID);
}
// If we _still_ don't have a time zone, use GMT.
- if (default_zone == NULL) {
- const TimeZone* temptz = getGMT();
+ //
+ // Note: This is extremely unlikely situation. If
+ // new SimpleTimeZone(...) above fails, the following
+ // code may also fail.
+ if (hostZone == NULL) {
+ const TimeZone* temptz = TimeZone::getGMT();
// If we can't use GMT, get out.
if (temptz == NULL) {
- return;
+ return NULL;
}
- default_zone = temptz->clone();
+ hostZone = temptz->clone();
}
- // If DEFAULT_ZONE is still NULL, set it up.
- umtx_lock(&LOCK);
- if (DEFAULT_ZONE == NULL) {
- DEFAULT_ZONE = default_zone;
- default_zone = NULL;
- ucln_i18n_registerCleanup(UCLN_I18N_TIMEZONE, timeZone_cleanup);
- }
- umtx_unlock(&LOCK);
+ return hostZone;
+}
+
+// -------------------------------------
+
+/**
+ * Initialize DEFAULT_ZONE from the system default time zone.
+ * Upon return, DEFAULT_ZONE will not be NULL, unless operator new()
+ * returns NULL.
+ */
+static void U_CALLCONV initDefault()
+{
+ ucln_i18n_registerCleanup(UCLN_I18N_TIMEZONE, timeZone_cleanup);
- delete default_zone;
+ // If setDefault() has already been called we can skip getting the
+ // default zone information from the system.
+ if (DEFAULT_ZONE != NULL) {
+ return;
+ }
+
+ // NOTE: this code is safely single threaded, being only
+ // run via umtx_initOnce().
+ //
+ // Some of the locale/timezone OS functions may not be thread safe,
+ //
+ // The operating system might actually use ICU to implement timezones.
+ // So we may have ICU calling ICU here, like on AIX.
+ // There shouldn't be a problem with this; initOnce does not hold a mutex
+ // while the init function is being run.
+
+ // The code detecting the host time zone was separated from this
+ // and implemented as TimeZone::detectHostTimeZone()
+
+ TimeZone *default_zone = TimeZone::detectHostTimeZone();
+
+ // The only way for DEFAULT_ZONE to be non-null at this point is if the user
+ // made a thread-unsafe call to setDefault() or adoptDefault() in another
+ // thread while this thread was doing something that required getting the default.
+ U_ASSERT(DEFAULT_ZONE == NULL);
+
+ DEFAULT_ZONE = default_zone;
}
// -------------------------------------
TimeZone* U_EXPORT2
TimeZone::createDefault()
{
- /* This is here to prevent race conditions. */
- UBool needsInit;
- UMTX_CHECK(&LOCK, (DEFAULT_ZONE == NULL), needsInit);
- if (needsInit) {
- initDefault();
- }
-
- Mutex lock(&LOCK); // In case adoptDefault is called
+ umtx_initOnce(gDefaultZoneInitOnce, initDefault);
return (DEFAULT_ZONE != NULL) ? DEFAULT_ZONE->clone() : NULL;
}
{
if (zone != NULL)
{
- TimeZone* old = NULL;
-
- umtx_lock(&LOCK);
- old = DEFAULT_ZONE;
+ TimeZone *old = DEFAULT_ZONE;
DEFAULT_ZONE = zone;
- umtx_unlock(&LOCK);
-
delete old;
ucln_i18n_registerCleanup(UCLN_I18N_TIMEZONE, timeZone_cleanup);
}
//----------------------------------------------------------------------
+
+static void U_CALLCONV initMap(USystemTimeZoneType type, UErrorCode& ec) {
+ ucln_i18n_registerCleanup(UCLN_I18N_TIMEZONE, timeZone_cleanup);
+
+ UResourceBundle *res = ures_openDirect(0, kZONEINFO, &ec);
+ res = ures_getByKey(res, kNAMES, res, &ec); // dereference Zones section
+ if (U_SUCCESS(ec)) {
+ int32_t size = ures_getSize(res);
+ int32_t *m = (int32_t *)uprv_malloc(size * sizeof(int32_t));
+ if (m == NULL) {
+ ec = U_MEMORY_ALLOCATION_ERROR;
+ } else {
+ int32_t numEntries = 0;
+ for (int32_t i = 0; i < size; i++) {
+ UnicodeString id = ures_getUnicodeStringByIndex(res, i, &ec);
+ if (U_FAILURE(ec)) {
+ break;
+ }
+ if (0 == id.compare(UNKNOWN_ZONE_ID, UNKNOWN_ZONE_ID_LENGTH)) {
+ // exclude Etc/Unknown
+ continue;
+ }
+ if (type == UCAL_ZONE_TYPE_CANONICAL || type == UCAL_ZONE_TYPE_CANONICAL_LOCATION) {
+ UnicodeString canonicalID;
+ ZoneMeta::getCanonicalCLDRID(id, canonicalID, ec);
+ if (U_FAILURE(ec)) {
+ break;
+ }
+ if (canonicalID != id) {
+ // exclude aliases
+ continue;
+ }
+ }
+ if (type == UCAL_ZONE_TYPE_CANONICAL_LOCATION) {
+ const UChar *region = TimeZone::getRegion(id, ec);
+ if (U_FAILURE(ec)) {
+ break;
+ }
+ if (u_strcmp(region, WORLD) == 0) {
+ // exclude non-location ("001")
+ continue;
+ }
+ }
+ m[numEntries++] = i;
+ }
+ if (U_SUCCESS(ec)) {
+ int32_t *tmp = m;
+ m = (int32_t *)uprv_realloc(tmp, numEntries * sizeof(int32_t));
+ if (m == NULL) {
+ // realloc failed.. use the original one even it has unused
+ // area at the end
+ m = tmp;
+ }
+
+ switch(type) {
+ case UCAL_ZONE_TYPE_ANY:
+ U_ASSERT(MAP_SYSTEM_ZONES == NULL);
+ MAP_SYSTEM_ZONES = m;
+ LEN_SYSTEM_ZONES = numEntries;
+ break;
+ case UCAL_ZONE_TYPE_CANONICAL:
+ U_ASSERT(MAP_CANONICAL_SYSTEM_ZONES == NULL);
+ MAP_CANONICAL_SYSTEM_ZONES = m;
+ LEN_CANONICAL_SYSTEM_ZONES = numEntries;
+ break;
+ case UCAL_ZONE_TYPE_CANONICAL_LOCATION:
+ U_ASSERT(MAP_CANONICAL_SYSTEM_LOCATION_ZONES == NULL);
+ MAP_CANONICAL_SYSTEM_LOCATION_ZONES = m;
+ LEN_CANONICAL_SYSTEM_LOCATION_ZONES = numEntries;
+ break;
+ }
+ }
+ }
+ }
+ ures_close(res);
+}
+
+
/**
* This is the default implementation for subclasses that do not
* override this method. This implementation calls through to the
// Map into to zones. Our results are zone[map[i]] for
// i=0..len-1, where zone[i] is the i-th Olson zone. If map==NULL
// then our results are zone[i] for i=0..len-1. Len will be zero
- // iff the zone data could not be loaded.
+ // if the zone data could not be loaded.
int32_t* map;
+ int32_t* localMap;
int32_t len;
int32_t pos;
+ TZEnumeration(int32_t* mapData, int32_t mapLen, UBool adoptMapData) : pos(0) {
+ map = mapData;
+ localMap = adoptMapData ? mapData : NULL;
+ len = mapLen;
+ }
+
UBool getID(int32_t i) {
UErrorCode ec = U_ZERO_ERROR;
int32_t idLen = 0;
return U_SUCCESS(ec);
}
-public:
- TZEnumeration() : map(NULL), len(0), pos(0) {
- if (getOlsonMeta()) {
- len = OLSON_ZONE_COUNT;
+ static int32_t* getMap(USystemTimeZoneType type, int32_t& len, UErrorCode& ec) {
+ len = 0;
+ if (U_FAILURE(ec)) {
+ return NULL;
+ }
+ int32_t* m = NULL;
+ switch (type) {
+ case UCAL_ZONE_TYPE_ANY:
+ umtx_initOnce(gSystemZonesInitOnce, &initMap, type, ec);
+ m = MAP_SYSTEM_ZONES;
+ len = LEN_SYSTEM_ZONES;
+ break;
+ case UCAL_ZONE_TYPE_CANONICAL:
+ umtx_initOnce(gCanonicalZonesInitOnce, &initMap, type, ec);
+ m = MAP_CANONICAL_SYSTEM_ZONES;
+ len = LEN_CANONICAL_SYSTEM_ZONES;
+ break;
+ case UCAL_ZONE_TYPE_CANONICAL_LOCATION:
+ umtx_initOnce(gCanonicalLocationZonesInitOnce, &initMap, type, ec);
+ m = MAP_CANONICAL_SYSTEM_LOCATION_ZONES;
+ len = LEN_CANONICAL_SYSTEM_LOCATION_ZONES;
+ break;
+ default:
+ ec = U_ILLEGAL_ARGUMENT_ERROR;
+ m = NULL;
+ len = 0;
+ break;
}
+ return m;
}
- TZEnumeration(int32_t rawOffset) : map(NULL), len(0), pos(0) {
- if (!getOlsonMeta()) {
- return;
- }
+public:
- // Allocate more space than we'll need. The end of the array will
- // be blank.
- map = (int32_t*)uprv_malloc(OLSON_ZONE_COUNT * sizeof(int32_t));
- if (map == 0) {
- return;
- }
+#define DEFAULT_FILTERED_MAP_SIZE 8
+#define MAP_INCREMENT_SIZE 8
- uprv_memset(map, 0, sizeof(int32_t) * OLSON_ZONE_COUNT);
-
- UnicodeString s;
- for (int32_t i=0; i<OLSON_ZONE_COUNT; ++i) {
- if (getID(i)) {
- // This is VERY inefficient.
- TimeZone* z = TimeZone::createTimeZone(unistr);
- // Make sure we get back the ID we wanted (if the ID is
- // invalid we get back GMT).
- if (z != 0 && z->getID(s) == unistr &&
- z->getRawOffset() == rawOffset) {
- map[len++] = i;
- }
- delete z;
- }
+ static TZEnumeration* create(USystemTimeZoneType type, const char* region, const int32_t* rawOffset, UErrorCode& ec) {
+ if (U_FAILURE(ec)) {
+ return NULL;
}
- }
- TZEnumeration(const char* country) : map(NULL), len(0), pos(0) {
- if (!getOlsonMeta()) {
- return;
+ int32_t baseLen;
+ int32_t *baseMap = getMap(type, baseLen, ec);
+
+ if (U_FAILURE(ec)) {
+ return NULL;
}
- UErrorCode ec = U_ZERO_ERROR;
- UResourceBundle *res = ures_openDirect(0, kZONEINFO, &ec);
- ures_getByKey(res, kREGIONS, res, &ec);
- if (U_SUCCESS(ec) && ures_getType(res) == URES_ARRAY) {
- UChar uCountry[] = {0, 0, 0, 0};
- if (country) {
- u_charsToUChars(country, uCountry, 2);
- } else {
- u_strcpy(uCountry, WORLD);
+ // If any additional conditions are available,
+ // create instance local map filtered by the conditions.
+
+ int32_t *filteredMap = NULL;
+ int32_t numEntries = 0;
+
+ if (region != NULL || rawOffset != NULL) {
+ int32_t filteredMapSize = DEFAULT_FILTERED_MAP_SIZE;
+ filteredMap = (int32_t *)uprv_malloc(filteredMapSize * sizeof(int32_t));
+ if (filteredMap == NULL) {
+ ec = U_MEMORY_ALLOCATION_ERROR;
+ return NULL;
}
- // count matches
- int32_t count = 0;
- int32_t i;
- const UChar *region;
- for (i = 0; i < ures_getSize(res); i++) {
- region = ures_getStringByIndex(res, i, NULL, &ec);
+ // Walk through the base map
+ UResourceBundle *res = ures_openDirect(0, kZONEINFO, &ec);
+ res = ures_getByKey(res, kNAMES, res, &ec); // dereference Zones section
+ for (int32_t i = 0; i < baseLen; i++) {
+ int32_t zidx = baseMap[i];
+ UnicodeString id = ures_getUnicodeStringByIndex(res, zidx, &ec);
if (U_FAILURE(ec)) {
break;
}
- if (u_strcmp(uCountry, region) == 0) {
- count++;
+ if (region != NULL) {
+ // Filter by region
+ char tzregion[4]; // max 3 letters + null term
+ TimeZone::getRegion(id, tzregion, sizeof(tzregion), ec);
+ if (U_FAILURE(ec)) {
+ break;
+ }
+ if (uprv_stricmp(tzregion, region) != 0) {
+ // region does not match
+ continue;
+ }
}
- }
+ if (rawOffset != NULL) {
+ // Filter by raw offset
+ // Note: This is VERY inefficient
+ TimeZone *z = createSystemTimeZone(id, ec);
+ if (U_FAILURE(ec)) {
+ break;
+ }
+ int32_t tzoffset = z->getRawOffset();
+ delete z;
- if (count > 0) {
- map = (int32_t*)uprv_malloc(sizeof(int32_t) * count);
- if (map != NULL) {
- int32_t idx = 0;
- for (i = 0; i < ures_getSize(res); i++) {
- region = ures_getStringByIndex(res, i, NULL, &ec);
- if (U_FAILURE(ec)) {
- break;
- }
- if (u_strcmp(uCountry, region) == 0) {
- map[idx++] = i;
- }
+ if (tzoffset != *rawOffset) {
+ continue;
}
- if (U_SUCCESS(ec)) {
- len = count;
+ }
+
+ if (filteredMapSize <= numEntries) {
+ filteredMapSize += MAP_INCREMENT_SIZE;
+ int32_t *tmp = (int32_t *)uprv_realloc(filteredMap, filteredMapSize * sizeof(int32_t));
+ if (tmp == NULL) {
+ ec = U_MEMORY_ALLOCATION_ERROR;
+ break;
} else {
- uprv_free(map);
- map = NULL;
+ filteredMap = tmp;
}
- } else {
- U_DEBUG_TZ_MSG(("Failed to load tz for region %s: %s\n", country, u_errorName(ec)));
}
+
+ filteredMap[numEntries++] = zidx;
+ }
+
+ if (U_FAILURE(ec)) {
+ uprv_free(filteredMap);
+ filteredMap = NULL;
}
+
+ ures_close(res);
}
- ures_close(res);
- }
- TZEnumeration(const TZEnumeration &other) : StringEnumeration(), map(NULL), len(0), pos(0) {
- if(other.len > 0) {
- if(other.map != NULL) {
- map = (int32_t *)uprv_malloc(other.len * sizeof(int32_t));
- if(map != NULL) {
- len = other.len;
- uprv_memcpy(map, other.map, len * sizeof(int32_t));
- pos = other.pos;
- }
+ TZEnumeration *result = NULL;
+ if (U_SUCCESS(ec)) {
+ // Finally, create a new enumeration instance
+ if (filteredMap == NULL) {
+ result = new TZEnumeration(baseMap, baseLen, FALSE);
} else {
+ result = new TZEnumeration(filteredMap, numEntries, TRUE);
+ filteredMap = NULL;
+ }
+ if (result == NULL) {
+ ec = U_MEMORY_ALLOCATION_ERROR;
+ }
+ }
+
+ if (filteredMap != NULL) {
+ uprv_free(filteredMap);
+ }
+
+ return result;
+ }
+
+ TZEnumeration(const TZEnumeration &other) : StringEnumeration(), map(NULL), localMap(NULL), len(0), pos(0) {
+ if (other.localMap != NULL) {
+ localMap = (int32_t *)uprv_malloc(other.len * sizeof(int32_t));
+ if (localMap != NULL) {
len = other.len;
+ uprv_memcpy(localMap, other.localMap, len * sizeof(int32_t));
pos = other.pos;
+ map = localMap;
+ } else {
+ len = 0;
+ pos = 0;
+ map = NULL;
}
+ } else {
+ map = other.map;
+ localMap = NULL;
+ len = other.len;
+ pos = other.pos;
}
}
- virtual ~TZEnumeration() {
- uprv_free(map);
- }
+ virtual ~TZEnumeration();
virtual StringEnumeration *clone() const {
return new TZEnumeration(*this);
}
virtual const UnicodeString* snext(UErrorCode& status) {
- if (U_SUCCESS(status) && pos < len) {
- getID((map == 0) ? pos : map[pos]);
+ if (U_SUCCESS(status) && map != NULL && pos < len) {
+ getID(map[pos]);
++pos;
return &unistr;
}
virtual UClassID getDynamicClassID(void) const;
};
+TZEnumeration::~TZEnumeration() {
+ if (localMap != NULL) {
+ uprv_free(localMap);
+ }
+}
+
UOBJECT_DEFINE_RTTI_IMPLEMENTATION(TZEnumeration)
+StringEnumeration* U_EXPORT2
+TimeZone::createTimeZoneIDEnumeration(
+ USystemTimeZoneType zoneType,
+ const char* region,
+ const int32_t* rawOffset,
+ UErrorCode& ec) {
+ return TZEnumeration::create(zoneType, region, rawOffset, ec);
+}
+
StringEnumeration* U_EXPORT2
TimeZone::createEnumeration() {
- return new TZEnumeration();
+ UErrorCode ec = U_ZERO_ERROR;
+ return TZEnumeration::create(UCAL_ZONE_TYPE_ANY, NULL, NULL, ec);
}
StringEnumeration* U_EXPORT2
TimeZone::createEnumeration(int32_t rawOffset) {
- return new TZEnumeration(rawOffset);
+ UErrorCode ec = U_ZERO_ERROR;
+ return TZEnumeration::create(UCAL_ZONE_TYPE_ANY, NULL, &rawOffset, ec);
}
StringEnumeration* U_EXPORT2
TimeZone::createEnumeration(const char* country) {
- return new TZEnumeration(country);
+ UErrorCode ec = U_ZERO_ERROR;
+ return TZEnumeration::create(UCAL_ZONE_TYPE_ANY, country, NULL, ec);
}
// ---------------------------------------
ures_getByKey(&res, kLINKS, &r, &ec);
const int32_t* v = ures_getIntVector(&r, &size, &ec);
if (U_SUCCESS(ec)) {
- if (index >= 0 && index < size && getOlsonMeta()) {
+ if (index >= 0 && index < size) {
zone = v[index];
}
}
// ---------------------------------------
-// These two methods are used by ZoneMeta class only.
+// These methods are used by ZoneMeta class only.
+
+const UChar*
+TimeZone::findID(const UnicodeString& id) {
+ const UChar *result = NULL;
+ UErrorCode ec = U_ZERO_ERROR;
+ UResourceBundle *rb = ures_openDirect(NULL, kZONEINFO, &ec);
+
+ // resolve zone index by name
+ UResourceBundle *names = ures_getByKey(rb, kNAMES, NULL, &ec);
+ int32_t idx = findInStringArray(names, id, ec);
+ result = ures_getStringByIndex(names, idx, NULL, &ec);
+ if (U_FAILURE(ec)) {
+ result = NULL;
+ }
+ ures_close(names);
+ ures_close(rb);
+ return result;
+}
+
const UChar*
TimeZone::dereferOlsonLink(const UnicodeString& id) {
const UChar*
TimeZone::getRegion(const UnicodeString& id) {
- const UChar *result = WORLD;
- UErrorCode ec = U_ZERO_ERROR;
- UResourceBundle *rb = ures_openDirect(NULL, kZONEINFO, &ec);
+ UErrorCode status = U_ZERO_ERROR;
+ return getRegion(id, status);
+}
+
+const UChar*
+TimeZone::getRegion(const UnicodeString& id, UErrorCode& status) {
+ if (U_FAILURE(status)) {
+ return NULL;
+ }
+ const UChar *result = NULL;
+ UResourceBundle *rb = ures_openDirect(NULL, kZONEINFO, &status);
// resolve zone index by name
- UResourceBundle *res = ures_getByKey(rb, kNAMES, NULL, &ec);
- int32_t idx = findInStringArray(res, id, ec);
+ UResourceBundle *res = ures_getByKey(rb, kNAMES, NULL, &status);
+ int32_t idx = findInStringArray(res, id, status);
// get region mapping
- ures_getByKey(rb, kREGIONS, res, &ec);
- const UChar *tmp = ures_getStringByIndex(res, idx, NULL, &ec);
- if (U_SUCCESS(ec)) {
+ ures_getByKey(rb, kREGIONS, res, &status);
+ const UChar *tmp = ures_getStringByIndex(res, idx, NULL, &status);
+ if (U_SUCCESS(status)) {
result = tmp;
}
return result;
}
+
+// ---------------------------------------
+int32_t
+TimeZone::getRegion(const UnicodeString& id, char *region, int32_t capacity, UErrorCode& status)
+{
+ int32_t resultLen = 0;
+ *region = 0;
+ if (U_FAILURE(status)) {
+ return 0;
+ }
+
+ const UChar *uregion = NULL;
+ // "Etc/Unknown" is not a system zone ID,
+ // but in the zone data
+ if (id.compare(UNKNOWN_ZONE_ID, UNKNOWN_ZONE_ID_LENGTH) != 0) {
+ uregion = getRegion(id);
+ }
+ if (uregion == NULL) {
+ status = U_ILLEGAL_ARGUMENT_ERROR;
+ return 0;
+ }
+ resultLen = u_strlen(uregion);
+ // A region code is represented by invariant characters
+ u_UCharsToChars(uregion, region, uprv_min(resultLen, capacity));
+
+ if (capacity < resultLen) {
+ status = U_BUFFER_OVERFLOW_ERROR;
+ return resultLen;
+ }
+
+ return u_terminateChars(region, capacity, resultLen, &status);
+}
+
// ---------------------------------------
UnicodeString&
TimeZone::getDisplayName(UBool daylight, EDisplayType style, const Locale& locale, UnicodeString& result) const
{
- // SRL TODO: cache the SDF, just like java.
UErrorCode status = U_ZERO_ERROR;
-#ifdef U_DEBUG_TZ
- char buf[128];
- fID.extract(0, sizeof(buf)-1, buf, sizeof(buf), "");
-#endif
-
- // select the proper format string
- UnicodeString pat;
- switch(style){
- case LONG:
- pat = ZZZZ_STR;
- break;
- case SHORT_GENERIC:
- pat = V_STR;
- break;
- case LONG_GENERIC:
- pat = VVVV_STR;
- break;
- case SHORT_GMT:
- pat = Z_UC_STR;
- break;
- case LONG_GMT:
- pat = ZZZZ_UC_STR;
- break;
- case SHORT_COMMONLY_USED:
- //pat = V_UC_STR;
- pat = Z_STR;
- break;
- case GENERIC_LOCATION:
- pat = VVVV_UC_STR;
- break;
- default: // SHORT
- //pat = Z_STR;
- pat = V_UC_STR;
- break;
- }
-
- SimpleDateFormat format(pat, locale, status);
- U_DEBUG_TZ_MSG(("getDisplayName(%s)\n", buf));
- if(!U_SUCCESS(status))
- {
-#ifdef U_DEBUG_TZ
- char buf2[128];
- result.extract(0, sizeof(buf2)-1, buf2, sizeof(buf2), "");
- U_DEBUG_TZ_MSG(("getDisplayName(%s) -> %s\n", buf, buf2));
-#endif
- return result.remove();
- }
+ UDate date = Calendar::getNow();
+ UTimeZoneFormatTimeType timeType;
+ int32_t offset;
- UDate d = Calendar::getNow();
- int32_t rawOffset;
- int32_t dstOffset;
- this->getOffset(d, FALSE, rawOffset, dstOffset, status);
- if (U_FAILURE(status)) {
- return result.remove();
- }
-
- if ((daylight && dstOffset != 0) ||
- (!daylight && dstOffset == 0) ||
- (style == SHORT_GENERIC) ||
- (style == LONG_GENERIC)
- ) {
- // Current time and the request (daylight / not daylight) agree.
- format.setTimeZone(*this);
- return format.format(d, result);
- }
-
- // Create a new SimpleTimeZone as a stand-in for this zone; the
- // stand-in will have no DST, or DST during July, but the same ID and offset,
- // and hence the same display name.
- // We don't cache these because they're small and cheap to create.
- UnicodeString tempID;
- getID(tempID);
- SimpleTimeZone *tz = NULL;
- if(daylight && useDaylightTime()){
- // The display name for daylight saving time was requested, but currently not in DST
- // Set a fixed date (July 1) in this Gregorian year
- GregorianCalendar cal(*this, status);
+ if (style == GENERIC_LOCATION || style == LONG_GENERIC || style == SHORT_GENERIC) {
+ LocalPointer<TimeZoneFormat> tzfmt(TimeZoneFormat::createInstance(locale, status));
if (U_FAILURE(status)) {
- return result.remove();
+ result.remove();
+ return result;
}
- cal.set(UCAL_MONTH, UCAL_JULY);
- cal.set(UCAL_DATE, 1);
-
- // Get July 1 date
- d = cal.getTime(status);
-
- // Check if it is in DST
- if (cal.get(UCAL_DST_OFFSET, status) == 0) {
- // We need to create a fake time zone
- tz = new SimpleTimeZone(rawOffset, tempID,
- UCAL_JUNE, 1, 0, 0,
- UCAL_AUGUST, 1, 0, 0,
- getDSTSavings(), status);
- if (U_FAILURE(status) || tz == NULL) {
- if (U_SUCCESS(status)) {
- status = U_MEMORY_ALLOCATION_ERROR;
- }
- return result.remove();
+ // Generic format
+ switch (style) {
+ case GENERIC_LOCATION:
+ tzfmt->format(UTZFMT_STYLE_GENERIC_LOCATION, *this, date, result, &timeType);
+ break;
+ case LONG_GENERIC:
+ tzfmt->format(UTZFMT_STYLE_GENERIC_LONG, *this, date, result, &timeType);
+ break;
+ case SHORT_GENERIC:
+ tzfmt->format(UTZFMT_STYLE_GENERIC_SHORT, *this, date, result, &timeType);
+ break;
+ default:
+ U_ASSERT(FALSE);
+ }
+ // Generic format many use Localized GMT as the final fallback.
+ // When Localized GMT format is used, the result might not be
+ // appropriate for the requested daylight value.
+ if ((daylight && timeType == UTZFMT_TIME_TYPE_STANDARD) || (!daylight && timeType == UTZFMT_TIME_TYPE_DAYLIGHT)) {
+ offset = daylight ? getRawOffset() + getDSTSavings() : getRawOffset();
+ if (style == SHORT_GENERIC) {
+ tzfmt->formatOffsetShortLocalizedGMT(offset, result, status);
+ } else {
+ tzfmt->formatOffsetLocalizedGMT(offset, result, status);
}
- format.adoptTimeZone(tz);
- } else {
- format.setTimeZone(*this);
}
+ } else if (style == LONG_GMT || style == SHORT_GMT) {
+ LocalPointer<TimeZoneFormat> tzfmt(TimeZoneFormat::createInstance(locale, status));
+ if (U_FAILURE(status)) {
+ result.remove();
+ return result;
+ }
+ offset = daylight && useDaylightTime() ? getRawOffset() + getDSTSavings() : getRawOffset();
+ switch (style) {
+ case LONG_GMT:
+ tzfmt->formatOffsetLocalizedGMT(offset, result, status);
+ break;
+ case SHORT_GMT:
+ tzfmt->formatOffsetISO8601Basic(offset, FALSE, FALSE, FALSE, result, status);
+ break;
+ default:
+ U_ASSERT(FALSE);
+ }
+
} else {
- // The display name for standard time was requested, but currently in DST
- // or display name for daylight saving time was requested, but this zone no longer
- // observes DST.
- tz = new SimpleTimeZone(rawOffset, tempID);
- if (U_FAILURE(status) || tz == NULL) {
- if (U_SUCCESS(status)) {
- status = U_MEMORY_ALLOCATION_ERROR;
+ U_ASSERT(style == LONG || style == SHORT || style == SHORT_COMMONLY_USED);
+ UTimeZoneNameType nameType = UTZNM_UNKNOWN;
+ switch (style) {
+ case LONG:
+ nameType = daylight ? UTZNM_LONG_DAYLIGHT : UTZNM_LONG_STANDARD;
+ break;
+ case SHORT:
+ case SHORT_COMMONLY_USED:
+ nameType = daylight ? UTZNM_SHORT_DAYLIGHT : UTZNM_SHORT_STANDARD;
+ break;
+ default:
+ U_ASSERT(FALSE);
+ }
+ LocalPointer<TimeZoneNames> tznames(TimeZoneNames::createInstance(locale, status));
+ if (U_FAILURE(status)) {
+ result.remove();
+ return result;
+ }
+ UnicodeString canonicalID(ZoneMeta::getCanonicalCLDRID(*this));
+ tznames->getDisplayName(canonicalID, nameType, date, result);
+ if (result.isEmpty()) {
+ // Fallback to localized GMT
+ LocalPointer<TimeZoneFormat> tzfmt(TimeZoneFormat::createInstance(locale, status));
+ offset = daylight && useDaylightTime() ? getRawOffset() + getDSTSavings() : getRawOffset();
+ if (style == LONG) {
+ tzfmt->formatOffsetLocalizedGMT(offset, result, status);
+ } else {
+ tzfmt->formatOffsetShortLocalizedGMT(offset, result, status);
}
- return result.remove();
}
- format.adoptTimeZone(tz);
}
-
- format.format(d, result, status);
+ if (U_FAILURE(status)) {
+ result.remove();
+ }
return result;
}
int32_t sign, hour, min, sec;
if (parseCustomID(id, sign, hour, min, sec)) {
formatCustomID(hour, min, sec, (sign < 0), normalized);
+ } else {
+ status = U_ILLEGAL_ARGUMENT_ERROR;
}
return normalized;
}
NumberFormat* numberFormat = 0;
UnicodeString idUppercase = id;
- idUppercase.toUpper();
+ idUppercase.toUpper("");
if (id.length() > GMT_ID_LENGTH &&
- idUppercase.startsWith(GMT_ID))
+ idUppercase.startsWith(GMT_ID, GMT_ID_LENGTH))
{
ParsePosition pos(GMT_ID_LENGTH);
sign = 1;
return FALSE;
}
numberFormat->setParseIntegerOnly(TRUE);
- numberFormat->setParseStrict(FALSE); // TODO: a wild hack...
+ //numberFormat->setLenient(TRUE); // TODO: May need to set this, depends on latest timezone parsing
// Look for either hh:mm, hhmm, or hh
int32_t start = pos.getIndex();
TimeZone::formatCustomID(int32_t hour, int32_t min, int32_t sec,
UBool negative, UnicodeString& id) {
// Create time zone ID - GMT[+|-]hhmm[ss]
- id.setTo(GMT_ID);
+ id.setTo(GMT_ID, GMT_ID_LENGTH);
if (hour | min | sec) {
if (negative) {
id += (UChar)MINUS;
useDaylightTime() == other.useDaylightTime());
}
-const char*
-TimeZone::getTZDataVersion(UErrorCode& status)
-{
- /* This is here to prevent race conditions. */
- UBool needsInit;
- UMTX_CHECK(&LOCK, !TZDataVersionInitialized, needsInit);
- if (needsInit) {
- int32_t len = 0;
- UResourceBundle *bundle = ures_openDirect(NULL, kZONEINFO, &status);
- const UChar *tzver = ures_getStringByKey(bundle, kTZVERSION,
- &len, &status);
+static void U_CALLCONV initTZDataVersion(UErrorCode &status) {
+ ucln_i18n_registerCleanup(UCLN_I18N_TIMEZONE, timeZone_cleanup);
+ int32_t len = 0;
+ UResourceBundle *bundle = ures_openDirect(NULL, kZONEINFO, &status);
+ const UChar *tzver = ures_getStringByKey(bundle, kTZVERSION, &len, &status);
- if (U_SUCCESS(status)) {
- if (len >= (int32_t)sizeof(TZDATA_VERSION)) {
- // Ensure that there is always space for a trailing nul in TZDATA_VERSION
- len = sizeof(TZDATA_VERSION) - 1;
- }
- umtx_lock(&LOCK);
- if (!TZDataVersionInitialized) {
- u_UCharsToChars(tzver, TZDATA_VERSION, len);
- TZDataVersionInitialized = TRUE;
- }
- umtx_unlock(&LOCK);
- ucln_i18n_registerCleanup(UCLN_I18N_TIMEZONE, timeZone_cleanup);
+ if (U_SUCCESS(status)) {
+ if (len >= (int32_t)sizeof(TZDATA_VERSION)) {
+ // Ensure that there is always space for a trailing nul in TZDATA_VERSION
+ len = sizeof(TZDATA_VERSION) - 1;
}
-
- ures_close(bundle);
- }
- if (U_FAILURE(status)) {
- return NULL;
+ u_UCharsToChars(tzver, TZDATA_VERSION, len);
}
+ ures_close(bundle);
+
+}
+
+const char*
+TimeZone::getTZDataVersion(UErrorCode& status)
+{
+ umtx_initOnce(gTZDataVersionInitOnce, &initTZDataVersion, status);
return (const char*)TZDATA_VERSION;
}
if (U_FAILURE(status)) {
return canonicalID;
}
- ZoneMeta::getCanonicalSystemID(id, canonicalID, status);
- if (U_SUCCESS(status)) {
- isSystemID = TRUE;
+ if (id.compare(UNKNOWN_ZONE_ID, UNKNOWN_ZONE_ID_LENGTH) == 0) {
+ // special case - Etc/Unknown is a canonical ID, but not system ID
+ canonicalID.fastCopyFrom(id);
+ isSystemID = FALSE;
} else {
- // Not a system ID
- status = U_ZERO_ERROR;
- getCustomID(id, canonicalID, status);
+ ZoneMeta::getCanonicalCLDRID(id, canonicalID, status);
+ if (U_SUCCESS(status)) {
+ isSystemID = TRUE;
+ } else {
+ // Not a system ID
+ status = U_ZERO_ERROR;
+ getCustomID(id, canonicalID, status);
+ }
}
return canonicalID;
}
+UnicodeString&
+TimeZone::getWindowsID(const UnicodeString& id, UnicodeString& winid, UErrorCode& status) {
+ winid.remove();
+ if (U_FAILURE(status)) {
+ return winid;
+ }
+
+ // canonicalize the input ID
+ UnicodeString canonicalID;
+ UBool isSystemID = FALSE;
+
+ getCanonicalID(id, canonicalID, isSystemID, status);
+ if (U_FAILURE(status) || !isSystemID) {
+ // mapping data is only applicable to tz database IDs
+ if (status == U_ILLEGAL_ARGUMENT_ERROR) {
+ // getWindowsID() sets an empty string where
+ // getCanonicalID() sets a U_ILLEGAL_ARGUMENT_ERROR.
+ status = U_ZERO_ERROR;
+ }
+ return winid;
+ }
+
+ UResourceBundle *mapTimezones = ures_openDirect(NULL, "windowsZones", &status);
+ ures_getByKey(mapTimezones, "mapTimezones", mapTimezones, &status);
+
+ if (U_FAILURE(status)) {
+ return winid;
+ }
+
+ UResourceBundle *winzone = NULL;
+ UBool found = FALSE;
+ while (ures_hasNext(mapTimezones) && !found) {
+ winzone = ures_getNextResource(mapTimezones, winzone, &status);
+ if (U_FAILURE(status)) {
+ break;
+ }
+ if (ures_getType(winzone) != URES_TABLE) {
+ continue;
+ }
+ UResourceBundle *regionalData = NULL;
+ while (ures_hasNext(winzone) && !found) {
+ regionalData = ures_getNextResource(winzone, regionalData, &status);
+ if (U_FAILURE(status)) {
+ break;
+ }
+ if (ures_getType(regionalData) != URES_STRING) {
+ continue;
+ }
+ int32_t len;
+ const UChar *tzids = ures_getString(regionalData, &len, &status);
+ if (U_FAILURE(status)) {
+ break;
+ }
+
+ const UChar *start = tzids;
+ UBool hasNext = TRUE;
+ while (hasNext) {
+ const UChar *end = u_strchr(start, (UChar)0x20);
+ if (end == NULL) {
+ end = tzids + len;
+ hasNext = FALSE;
+ }
+ if (canonicalID.compare(start, end - start) == 0) {
+ winid = UnicodeString(ures_getKey(winzone), -1 , US_INV);
+ found = TRUE;
+ break;
+ }
+ start = end + 1;
+ }
+ }
+ ures_close(regionalData);
+ }
+ ures_close(winzone);
+ ures_close(mapTimezones);
+
+ return winid;
+}
+
+#define MAX_WINDOWS_ID_SIZE 128
+
+UnicodeString&
+TimeZone::getIDForWindowsID(const UnicodeString& winid, const char* region, UnicodeString& id, UErrorCode& status) {
+ id.remove();
+ if (U_FAILURE(status)) {
+ return id;
+ }
+
+ UResourceBundle *zones = ures_openDirect(NULL, "windowsZones", &status);
+ ures_getByKey(zones, "mapTimezones", zones, &status);
+ if (U_FAILURE(status)) {
+ ures_close(zones);
+ return id;
+ }
+
+ UErrorCode tmperr = U_ZERO_ERROR;
+ char winidKey[MAX_WINDOWS_ID_SIZE];
+ int32_t winKeyLen = winid.extract(0, winid.length(), winidKey, sizeof(winidKey) - 1, US_INV);
+
+ if (winKeyLen == 0 || winKeyLen >= (int32_t)sizeof(winidKey)) {
+ ures_close(zones);
+ return id;
+ }
+ winidKey[winKeyLen] = 0;
+
+ ures_getByKey(zones, winidKey, zones, &tmperr); // use tmperr, because windows mapping might not
+ // be avaiable by design
+ if (U_FAILURE(tmperr)) {
+ ures_close(zones);
+ return id;
+ }
+
+ const UChar *tzid = NULL;
+ int32_t len = 0;
+ UBool gotID = FALSE;
+ if (region) {
+ const UChar *tzids = ures_getStringByKey(zones, region, &len, &tmperr); // use tmperr, because
+ // regional mapping is optional
+ if (U_SUCCESS(tmperr)) {
+ // first ID delimited by space is the defasult one
+ const UChar *end = u_strchr(tzids, (UChar)0x20);
+ if (end == NULL) {
+ id.setTo(tzids, -1);
+ } else {
+ id.setTo(tzids, end - tzids);
+ }
+ gotID = TRUE;
+ }
+ }
+
+ if (!gotID) {
+ tzid = ures_getStringByKey(zones, "001", &len, &status); // using status, because "001" must be
+ // available at this point
+ if (U_SUCCESS(status)) {
+ id.setTo(tzid, len);
+ }
+ }
+
+ ures_close(zones);
+ return id;
+}
+
+
U_NAMESPACE_END
#endif /* #if !UCONFIG_NO_FORMATTING */
projects / apple / icu.git / blobdiff