1324 lines
43 KiB
C++
1324 lines
43 KiB
C++
// Copyright (C) 2016 and later: Unicode, Inc. and others.
|
|
// License & terms of use: http://www.unicode.org/copyright.html
|
|
/*
|
|
*******************************************************************************
|
|
* Copyright (C) 2011-2016, International Business Machines Corporation and
|
|
* others. All Rights Reserved.
|
|
*******************************************************************************
|
|
*/
|
|
|
|
#include "unicode/utypes.h"
|
|
|
|
#if !UCONFIG_NO_FORMATTING
|
|
|
|
#include "tzgnames.h"
|
|
|
|
#include "unicode/basictz.h"
|
|
#include "unicode/locdspnm.h"
|
|
#include "unicode/rbtz.h"
|
|
#include "unicode/simpleformatter.h"
|
|
#include "unicode/simpletz.h"
|
|
#include "unicode/vtzone.h"
|
|
|
|
#include "cmemory.h"
|
|
#include "cstring.h"
|
|
#include "mutex.h"
|
|
#include "uhash.h"
|
|
#include "uassert.h"
|
|
#include "umutex.h"
|
|
#include "uresimp.h"
|
|
#include "ureslocs.h"
|
|
#include "zonemeta.h"
|
|
#include "tznames_impl.h"
|
|
#include "olsontz.h"
|
|
#include "ucln_in.h"
|
|
|
|
U_NAMESPACE_BEGIN
|
|
|
|
#define ZID_KEY_MAX 128
|
|
|
|
static const char gZoneStrings[] = "zoneStrings";
|
|
|
|
static const char gRegionFormatTag[] = "regionFormat";
|
|
static const char gFallbackFormatTag[] = "fallbackFormat";
|
|
|
|
static const UChar gEmpty[] = {0x00};
|
|
|
|
static const UChar gDefRegionPattern[] = {0x7B, 0x30, 0x7D, 0x00}; // "{0}"
|
|
static const UChar gDefFallbackPattern[] = {0x7B, 0x31, 0x7D, 0x20, 0x28, 0x7B, 0x30, 0x7D, 0x29, 0x00}; // "{1} ({0})"
|
|
|
|
static const double kDstCheckRange = (double)184*U_MILLIS_PER_DAY;
|
|
|
|
|
|
|
|
U_CDECL_BEGIN
|
|
|
|
typedef struct PartialLocationKey {
|
|
const UChar* tzID;
|
|
const UChar* mzID;
|
|
UBool isLong;
|
|
} PartialLocationKey;
|
|
|
|
/**
|
|
* Hash function for partial location name hash key
|
|
*/
|
|
static int32_t U_CALLCONV
|
|
hashPartialLocationKey(const UHashTok key) {
|
|
// <tzID>&<mzID>#[L|S]
|
|
PartialLocationKey *p = (PartialLocationKey *)key.pointer;
|
|
UnicodeString str(p->tzID);
|
|
str.append((UChar)0x26)
|
|
.append(p->mzID, -1)
|
|
.append((UChar)0x23)
|
|
.append((UChar)(p->isLong ? 0x4C : 0x53));
|
|
return str.hashCode();
|
|
}
|
|
|
|
/**
|
|
* Comparer for partial location name hash key
|
|
*/
|
|
static UBool U_CALLCONV
|
|
comparePartialLocationKey(const UHashTok key1, const UHashTok key2) {
|
|
PartialLocationKey *p1 = (PartialLocationKey *)key1.pointer;
|
|
PartialLocationKey *p2 = (PartialLocationKey *)key2.pointer;
|
|
|
|
if (p1 == p2) {
|
|
return TRUE;
|
|
}
|
|
if (p1 == NULL || p2 == NULL) {
|
|
return FALSE;
|
|
}
|
|
// We just check identity of tzID/mzID
|
|
return (p1->tzID == p2->tzID && p1->mzID == p2->mzID && p1->isLong == p2->isLong);
|
|
}
|
|
|
|
/**
|
|
* Deleter for GNameInfo
|
|
*/
|
|
static void U_CALLCONV
|
|
deleteGNameInfo(void *obj) {
|
|
uprv_free(obj);
|
|
}
|
|
|
|
/**
|
|
* GNameInfo stores zone name information in the local trie
|
|
*/
|
|
typedef struct GNameInfo {
|
|
UTimeZoneGenericNameType type;
|
|
const UChar* tzID;
|
|
} ZNameInfo;
|
|
|
|
/**
|
|
* GMatchInfo stores zone name match information used by find method
|
|
*/
|
|
typedef struct GMatchInfo {
|
|
const GNameInfo* gnameInfo;
|
|
int32_t matchLength;
|
|
UTimeZoneFormatTimeType timeType;
|
|
} ZMatchInfo;
|
|
|
|
U_CDECL_END
|
|
|
|
// ---------------------------------------------------
|
|
// The class stores time zone generic name match information
|
|
// ---------------------------------------------------
|
|
class TimeZoneGenericNameMatchInfo : public UMemory {
|
|
public:
|
|
TimeZoneGenericNameMatchInfo(UVector* matches);
|
|
~TimeZoneGenericNameMatchInfo();
|
|
|
|
int32_t size() const;
|
|
UTimeZoneGenericNameType getGenericNameType(int32_t index) const;
|
|
int32_t getMatchLength(int32_t index) const;
|
|
UnicodeString& getTimeZoneID(int32_t index, UnicodeString& tzID) const;
|
|
|
|
private:
|
|
UVector* fMatches; // vector of MatchEntry
|
|
};
|
|
|
|
TimeZoneGenericNameMatchInfo::TimeZoneGenericNameMatchInfo(UVector* matches)
|
|
: fMatches(matches) {
|
|
}
|
|
|
|
TimeZoneGenericNameMatchInfo::~TimeZoneGenericNameMatchInfo() {
|
|
if (fMatches != NULL) {
|
|
delete fMatches;
|
|
}
|
|
}
|
|
|
|
int32_t
|
|
TimeZoneGenericNameMatchInfo::size() const {
|
|
if (fMatches == NULL) {
|
|
return 0;
|
|
}
|
|
return fMatches->size();
|
|
}
|
|
|
|
UTimeZoneGenericNameType
|
|
TimeZoneGenericNameMatchInfo::getGenericNameType(int32_t index) const {
|
|
GMatchInfo *minfo = (GMatchInfo *)fMatches->elementAt(index);
|
|
if (minfo != NULL) {
|
|
return static_cast<UTimeZoneGenericNameType>(minfo->gnameInfo->type);
|
|
}
|
|
return UTZGNM_UNKNOWN;
|
|
}
|
|
|
|
int32_t
|
|
TimeZoneGenericNameMatchInfo::getMatchLength(int32_t index) const {
|
|
ZMatchInfo *minfo = (ZMatchInfo *)fMatches->elementAt(index);
|
|
if (minfo != NULL) {
|
|
return minfo->matchLength;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
UnicodeString&
|
|
TimeZoneGenericNameMatchInfo::getTimeZoneID(int32_t index, UnicodeString& tzID) const {
|
|
GMatchInfo *minfo = (GMatchInfo *)fMatches->elementAt(index);
|
|
if (minfo != NULL && minfo->gnameInfo->tzID != NULL) {
|
|
tzID.setTo(TRUE, minfo->gnameInfo->tzID, -1);
|
|
} else {
|
|
tzID.setToBogus();
|
|
}
|
|
return tzID;
|
|
}
|
|
|
|
// ---------------------------------------------------
|
|
// GNameSearchHandler
|
|
// ---------------------------------------------------
|
|
class GNameSearchHandler : public TextTrieMapSearchResultHandler {
|
|
public:
|
|
GNameSearchHandler(uint32_t types);
|
|
virtual ~GNameSearchHandler();
|
|
|
|
UBool handleMatch(int32_t matchLength, const CharacterNode *node, UErrorCode &status);
|
|
UVector* getMatches(int32_t& maxMatchLen);
|
|
|
|
private:
|
|
uint32_t fTypes;
|
|
UVector* fResults;
|
|
int32_t fMaxMatchLen;
|
|
};
|
|
|
|
GNameSearchHandler::GNameSearchHandler(uint32_t types)
|
|
: fTypes(types), fResults(NULL), fMaxMatchLen(0) {
|
|
}
|
|
|
|
GNameSearchHandler::~GNameSearchHandler() {
|
|
if (fResults != NULL) {
|
|
delete fResults;
|
|
}
|
|
}
|
|
|
|
UBool
|
|
GNameSearchHandler::handleMatch(int32_t matchLength, const CharacterNode *node, UErrorCode &status) {
|
|
if (U_FAILURE(status)) {
|
|
return FALSE;
|
|
}
|
|
if (node->hasValues()) {
|
|
int32_t valuesCount = node->countValues();
|
|
for (int32_t i = 0; i < valuesCount; i++) {
|
|
GNameInfo *nameinfo = (ZNameInfo *)node->getValue(i);
|
|
if (nameinfo == NULL) {
|
|
break;
|
|
}
|
|
if ((nameinfo->type & fTypes) != 0) {
|
|
// matches a requested type
|
|
if (fResults == NULL) {
|
|
fResults = new UVector(uprv_free, NULL, status);
|
|
if (fResults == NULL) {
|
|
status = U_MEMORY_ALLOCATION_ERROR;
|
|
}
|
|
}
|
|
if (U_SUCCESS(status)) {
|
|
U_ASSERT(fResults != NULL);
|
|
GMatchInfo *gmatch = (GMatchInfo *)uprv_malloc(sizeof(GMatchInfo));
|
|
if (gmatch == NULL) {
|
|
status = U_MEMORY_ALLOCATION_ERROR;
|
|
} else {
|
|
// add the match to the vector
|
|
gmatch->gnameInfo = nameinfo;
|
|
gmatch->matchLength = matchLength;
|
|
gmatch->timeType = UTZFMT_TIME_TYPE_UNKNOWN;
|
|
fResults->addElement(gmatch, status);
|
|
if (U_FAILURE(status)) {
|
|
uprv_free(gmatch);
|
|
} else {
|
|
if (matchLength > fMaxMatchLen) {
|
|
fMaxMatchLen = matchLength;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
UVector*
|
|
GNameSearchHandler::getMatches(int32_t& maxMatchLen) {
|
|
// give the ownership to the caller
|
|
UVector *results = fResults;
|
|
maxMatchLen = fMaxMatchLen;
|
|
|
|
// reset
|
|
fResults = NULL;
|
|
fMaxMatchLen = 0;
|
|
return results;
|
|
}
|
|
|
|
static UMutex gLock = U_MUTEX_INITIALIZER;
|
|
|
|
class TZGNCore : public UMemory {
|
|
public:
|
|
TZGNCore(const Locale& locale, UErrorCode& status);
|
|
virtual ~TZGNCore();
|
|
|
|
UnicodeString& getDisplayName(const TimeZone& tz, UTimeZoneGenericNameType type,
|
|
UDate date, UnicodeString& name) const;
|
|
|
|
UnicodeString& getGenericLocationName(const UnicodeString& tzCanonicalID, UnicodeString& name) const;
|
|
|
|
int32_t findBestMatch(const UnicodeString& text, int32_t start, uint32_t types,
|
|
UnicodeString& tzID, UTimeZoneFormatTimeType& timeType, UErrorCode& status) const;
|
|
|
|
private:
|
|
Locale fLocale;
|
|
const TimeZoneNames* fTimeZoneNames;
|
|
UHashtable* fLocationNamesMap;
|
|
UHashtable* fPartialLocationNamesMap;
|
|
|
|
SimpleFormatter fRegionFormat;
|
|
SimpleFormatter fFallbackFormat;
|
|
|
|
LocaleDisplayNames* fLocaleDisplayNames;
|
|
ZNStringPool fStringPool;
|
|
|
|
TextTrieMap fGNamesTrie;
|
|
UBool fGNamesTrieFullyLoaded;
|
|
|
|
char fTargetRegion[ULOC_COUNTRY_CAPACITY];
|
|
|
|
void initialize(const Locale& locale, UErrorCode& status);
|
|
void cleanup();
|
|
|
|
void loadStrings(const UnicodeString& tzCanonicalID);
|
|
|
|
const UChar* getGenericLocationName(const UnicodeString& tzCanonicalID);
|
|
|
|
UnicodeString& formatGenericNonLocationName(const TimeZone& tz, UTimeZoneGenericNameType type,
|
|
UDate date, UnicodeString& name) const;
|
|
|
|
UnicodeString& getPartialLocationName(const UnicodeString& tzCanonicalID,
|
|
const UnicodeString& mzID, UBool isLong, const UnicodeString& mzDisplayName,
|
|
UnicodeString& name) const;
|
|
|
|
const UChar* getPartialLocationName(const UnicodeString& tzCanonicalID,
|
|
const UnicodeString& mzID, UBool isLong, const UnicodeString& mzDisplayName);
|
|
|
|
TimeZoneGenericNameMatchInfo* findLocal(const UnicodeString& text, int32_t start, uint32_t types, UErrorCode& status) const;
|
|
|
|
TimeZoneNames::MatchInfoCollection* findTimeZoneNames(const UnicodeString& text, int32_t start, uint32_t types, UErrorCode& status) const;
|
|
};
|
|
|
|
|
|
// ---------------------------------------------------
|
|
// TZGNCore - core implmentation of TimeZoneGenericNames
|
|
//
|
|
// TimeZoneGenericNames is parallel to TimeZoneNames,
|
|
// but handles run-time generated time zone names.
|
|
// This is the main part of this module.
|
|
// ---------------------------------------------------
|
|
TZGNCore::TZGNCore(const Locale& locale, UErrorCode& status)
|
|
: fLocale(locale),
|
|
fTimeZoneNames(NULL),
|
|
fLocationNamesMap(NULL),
|
|
fPartialLocationNamesMap(NULL),
|
|
fLocaleDisplayNames(NULL),
|
|
fStringPool(status),
|
|
fGNamesTrie(TRUE, deleteGNameInfo),
|
|
fGNamesTrieFullyLoaded(FALSE) {
|
|
initialize(locale, status);
|
|
}
|
|
|
|
TZGNCore::~TZGNCore() {
|
|
cleanup();
|
|
}
|
|
|
|
void
|
|
TZGNCore::initialize(const Locale& locale, UErrorCode& status) {
|
|
if (U_FAILURE(status)) {
|
|
return;
|
|
}
|
|
|
|
// TimeZoneNames
|
|
fTimeZoneNames = TimeZoneNames::createInstance(locale, status);
|
|
if (U_FAILURE(status)) {
|
|
return;
|
|
}
|
|
|
|
// Initialize format patterns
|
|
UnicodeString rpat(TRUE, gDefRegionPattern, -1);
|
|
UnicodeString fpat(TRUE, gDefFallbackPattern, -1);
|
|
|
|
UErrorCode tmpsts = U_ZERO_ERROR; // OK with fallback warning..
|
|
UResourceBundle *zoneStrings = ures_open(U_ICUDATA_ZONE, locale.getName(), &tmpsts);
|
|
zoneStrings = ures_getByKeyWithFallback(zoneStrings, gZoneStrings, zoneStrings, &tmpsts);
|
|
|
|
if (U_SUCCESS(tmpsts)) {
|
|
const UChar *regionPattern = ures_getStringByKeyWithFallback(zoneStrings, gRegionFormatTag, NULL, &tmpsts);
|
|
if (U_SUCCESS(tmpsts) && u_strlen(regionPattern) > 0) {
|
|
rpat.setTo(regionPattern, -1);
|
|
}
|
|
tmpsts = U_ZERO_ERROR;
|
|
const UChar *fallbackPattern = ures_getStringByKeyWithFallback(zoneStrings, gFallbackFormatTag, NULL, &tmpsts);
|
|
if (U_SUCCESS(tmpsts) && u_strlen(fallbackPattern) > 0) {
|
|
fpat.setTo(fallbackPattern, -1);
|
|
}
|
|
}
|
|
ures_close(zoneStrings);
|
|
|
|
fRegionFormat.applyPatternMinMaxArguments(rpat, 1, 1, status);
|
|
fFallbackFormat.applyPatternMinMaxArguments(fpat, 2, 2, status);
|
|
if (U_FAILURE(status)) {
|
|
cleanup();
|
|
return;
|
|
}
|
|
|
|
// locale display names
|
|
fLocaleDisplayNames = LocaleDisplayNames::createInstance(locale);
|
|
|
|
// hash table for names - no key/value deleters
|
|
fLocationNamesMap = uhash_open(uhash_hashUChars, uhash_compareUChars, NULL, &status);
|
|
if (U_FAILURE(status)) {
|
|
cleanup();
|
|
return;
|
|
}
|
|
|
|
fPartialLocationNamesMap = uhash_open(hashPartialLocationKey, comparePartialLocationKey, NULL, &status);
|
|
if (U_FAILURE(status)) {
|
|
cleanup();
|
|
return;
|
|
}
|
|
uhash_setKeyDeleter(fPartialLocationNamesMap, uprv_free);
|
|
// no value deleter
|
|
|
|
// target region
|
|
const char* region = fLocale.getCountry();
|
|
int32_t regionLen = uprv_strlen(region);
|
|
if (regionLen == 0) {
|
|
char loc[ULOC_FULLNAME_CAPACITY];
|
|
uloc_addLikelySubtags(fLocale.getName(), loc, sizeof(loc), &status);
|
|
|
|
regionLen = uloc_getCountry(loc, fTargetRegion, sizeof(fTargetRegion), &status);
|
|
if (U_SUCCESS(status)) {
|
|
fTargetRegion[regionLen] = 0;
|
|
} else {
|
|
cleanup();
|
|
return;
|
|
}
|
|
} else if (regionLen < (int32_t)sizeof(fTargetRegion)) {
|
|
uprv_strcpy(fTargetRegion, region);
|
|
} else {
|
|
fTargetRegion[0] = 0;
|
|
}
|
|
|
|
// preload generic names for the default zone
|
|
TimeZone *tz = TimeZone::createDefault();
|
|
const UChar *tzID = ZoneMeta::getCanonicalCLDRID(*tz);
|
|
if (tzID != NULL) {
|
|
loadStrings(UnicodeString(TRUE, tzID, -1));
|
|
}
|
|
delete tz;
|
|
}
|
|
|
|
void
|
|
TZGNCore::cleanup() {
|
|
if (fLocaleDisplayNames != NULL) {
|
|
delete fLocaleDisplayNames;
|
|
}
|
|
if (fTimeZoneNames != NULL) {
|
|
delete fTimeZoneNames;
|
|
}
|
|
|
|
uhash_close(fLocationNamesMap);
|
|
uhash_close(fPartialLocationNamesMap);
|
|
}
|
|
|
|
|
|
UnicodeString&
|
|
TZGNCore::getDisplayName(const TimeZone& tz, UTimeZoneGenericNameType type, UDate date, UnicodeString& name) const {
|
|
name.setToBogus();
|
|
switch (type) {
|
|
case UTZGNM_LOCATION:
|
|
{
|
|
const UChar* tzCanonicalID = ZoneMeta::getCanonicalCLDRID(tz);
|
|
if (tzCanonicalID != NULL) {
|
|
getGenericLocationName(UnicodeString(TRUE, tzCanonicalID, -1), name);
|
|
}
|
|
}
|
|
break;
|
|
case UTZGNM_LONG:
|
|
case UTZGNM_SHORT:
|
|
formatGenericNonLocationName(tz, type, date, name);
|
|
if (name.isEmpty()) {
|
|
const UChar* tzCanonicalID = ZoneMeta::getCanonicalCLDRID(tz);
|
|
if (tzCanonicalID != NULL) {
|
|
getGenericLocationName(UnicodeString(TRUE, tzCanonicalID, -1), name);
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return name;
|
|
}
|
|
|
|
UnicodeString&
|
|
TZGNCore::getGenericLocationName(const UnicodeString& tzCanonicalID, UnicodeString& name) const {
|
|
if (tzCanonicalID.isEmpty()) {
|
|
name.setToBogus();
|
|
return name;
|
|
}
|
|
|
|
const UChar *locname = NULL;
|
|
TZGNCore *nonConstThis = const_cast<TZGNCore *>(this);
|
|
umtx_lock(&gLock);
|
|
{
|
|
locname = nonConstThis->getGenericLocationName(tzCanonicalID);
|
|
}
|
|
umtx_unlock(&gLock);
|
|
|
|
if (locname == NULL) {
|
|
name.setToBogus();
|
|
} else {
|
|
name.setTo(locname, u_strlen(locname));
|
|
}
|
|
|
|
return name;
|
|
}
|
|
|
|
/*
|
|
* This method updates the cache and must be called with a lock
|
|
*/
|
|
const UChar*
|
|
TZGNCore::getGenericLocationName(const UnicodeString& tzCanonicalID) {
|
|
U_ASSERT(!tzCanonicalID.isEmpty());
|
|
if (tzCanonicalID.length() > ZID_KEY_MAX) {
|
|
return NULL;
|
|
}
|
|
|
|
UErrorCode status = U_ZERO_ERROR;
|
|
UChar tzIDKey[ZID_KEY_MAX + 1];
|
|
int32_t tzIDKeyLen = tzCanonicalID.extract(tzIDKey, ZID_KEY_MAX + 1, status);
|
|
U_ASSERT(status == U_ZERO_ERROR); // already checked length above
|
|
tzIDKey[tzIDKeyLen] = 0;
|
|
|
|
const UChar *locname = (const UChar *)uhash_get(fLocationNamesMap, tzIDKey);
|
|
|
|
if (locname != NULL) {
|
|
// gEmpty indicate the name is not available
|
|
if (locname == gEmpty) {
|
|
return NULL;
|
|
}
|
|
return locname;
|
|
}
|
|
|
|
// Construct location name
|
|
UnicodeString name;
|
|
UnicodeString usCountryCode;
|
|
UBool isPrimary = FALSE;
|
|
|
|
ZoneMeta::getCanonicalCountry(tzCanonicalID, usCountryCode, &isPrimary);
|
|
|
|
if (!usCountryCode.isEmpty()) {
|
|
if (isPrimary) {
|
|
// If this is the primary zone in the country, use the country name.
|
|
char countryCode[ULOC_COUNTRY_CAPACITY];
|
|
U_ASSERT(usCountryCode.length() < ULOC_COUNTRY_CAPACITY);
|
|
int32_t ccLen = usCountryCode.extract(0, usCountryCode.length(), countryCode, sizeof(countryCode), US_INV);
|
|
countryCode[ccLen] = 0;
|
|
|
|
UnicodeString country;
|
|
fLocaleDisplayNames->regionDisplayName(countryCode, country);
|
|
fRegionFormat.format(country, name, status);
|
|
} else {
|
|
// If this is not the primary zone in the country,
|
|
// use the exemplar city name.
|
|
|
|
// getExemplarLocationName should retur non-empty string
|
|
// if the time zone is associated with a region
|
|
|
|
UnicodeString city;
|
|
fTimeZoneNames->getExemplarLocationName(tzCanonicalID, city);
|
|
fRegionFormat.format(city, name, status);
|
|
}
|
|
if (U_FAILURE(status)) {
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
locname = name.isEmpty() ? NULL : fStringPool.get(name, status);
|
|
if (U_SUCCESS(status)) {
|
|
// Cache the result
|
|
const UChar* cacheID = ZoneMeta::findTimeZoneID(tzCanonicalID);
|
|
U_ASSERT(cacheID != NULL);
|
|
if (locname == NULL) {
|
|
// gEmpty to indicate - no location name available
|
|
uhash_put(fLocationNamesMap, (void *)cacheID, (void *)gEmpty, &status);
|
|
} else {
|
|
uhash_put(fLocationNamesMap, (void *)cacheID, (void *)locname, &status);
|
|
if (U_FAILURE(status)) {
|
|
locname = NULL;
|
|
} else {
|
|
// put the name info into the trie
|
|
GNameInfo *nameinfo = (ZNameInfo *)uprv_malloc(sizeof(GNameInfo));
|
|
if (nameinfo != NULL) {
|
|
nameinfo->type = UTZGNM_LOCATION;
|
|
nameinfo->tzID = cacheID;
|
|
fGNamesTrie.put(locname, nameinfo, status);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return locname;
|
|
}
|
|
|
|
UnicodeString&
|
|
TZGNCore::formatGenericNonLocationName(const TimeZone& tz, UTimeZoneGenericNameType type, UDate date, UnicodeString& name) const {
|
|
U_ASSERT(type == UTZGNM_LONG || type == UTZGNM_SHORT);
|
|
name.setToBogus();
|
|
|
|
const UChar* uID = ZoneMeta::getCanonicalCLDRID(tz);
|
|
if (uID == NULL) {
|
|
return name;
|
|
}
|
|
|
|
UnicodeString tzID(TRUE, uID, -1);
|
|
|
|
// Try to get a name from time zone first
|
|
UTimeZoneNameType nameType = (type == UTZGNM_LONG) ? UTZNM_LONG_GENERIC : UTZNM_SHORT_GENERIC;
|
|
fTimeZoneNames->getTimeZoneDisplayName(tzID, nameType, name);
|
|
|
|
if (!name.isEmpty()) {
|
|
return name;
|
|
}
|
|
|
|
// Try meta zone
|
|
UChar mzIDBuf[32];
|
|
UnicodeString mzID(mzIDBuf, 0, UPRV_LENGTHOF(mzIDBuf));
|
|
fTimeZoneNames->getMetaZoneID(tzID, date, mzID);
|
|
if (!mzID.isEmpty()) {
|
|
UErrorCode status = U_ZERO_ERROR;
|
|
UBool useStandard = FALSE;
|
|
int32_t raw, sav;
|
|
UChar tmpNameBuf[64];
|
|
|
|
tz.getOffset(date, FALSE, raw, sav, status);
|
|
if (U_FAILURE(status)) {
|
|
return name;
|
|
}
|
|
|
|
if (sav == 0) {
|
|
useStandard = TRUE;
|
|
|
|
TimeZone *tmptz = tz.clone();
|
|
// Check if the zone actually uses daylight saving time around the time
|
|
BasicTimeZone *btz = NULL;
|
|
if (dynamic_cast<OlsonTimeZone *>(tmptz) != NULL
|
|
|| dynamic_cast<SimpleTimeZone *>(tmptz) != NULL
|
|
|| dynamic_cast<RuleBasedTimeZone *>(tmptz) != NULL
|
|
|| dynamic_cast<VTimeZone *>(tmptz) != NULL) {
|
|
btz = (BasicTimeZone*)tmptz;
|
|
}
|
|
|
|
if (btz != NULL) {
|
|
TimeZoneTransition before;
|
|
UBool beforTrs = btz->getPreviousTransition(date, TRUE, before);
|
|
if (beforTrs
|
|
&& (date - before.getTime() < kDstCheckRange)
|
|
&& before.getFrom()->getDSTSavings() != 0) {
|
|
useStandard = FALSE;
|
|
} else {
|
|
TimeZoneTransition after;
|
|
UBool afterTrs = btz->getNextTransition(date, FALSE, after);
|
|
if (afterTrs
|
|
&& (after.getTime() - date < kDstCheckRange)
|
|
&& after.getTo()->getDSTSavings() != 0) {
|
|
useStandard = FALSE;
|
|
}
|
|
}
|
|
} else {
|
|
// If not BasicTimeZone... only if the instance is not an ICU's implementation.
|
|
// We may get a wrong answer in edge case, but it should practically work OK.
|
|
tmptz->getOffset(date - kDstCheckRange, FALSE, raw, sav, status);
|
|
if (sav != 0) {
|
|
useStandard = FALSE;
|
|
} else {
|
|
tmptz->getOffset(date + kDstCheckRange, FALSE, raw, sav, status);
|
|
if (sav != 0){
|
|
useStandard = FALSE;
|
|
}
|
|
}
|
|
if (U_FAILURE(status)) {
|
|
delete tmptz;
|
|
return name;
|
|
}
|
|
}
|
|
delete tmptz;
|
|
}
|
|
if (useStandard) {
|
|
UTimeZoneNameType stdNameType = (nameType == UTZNM_LONG_GENERIC)
|
|
? UTZNM_LONG_STANDARD : UTZNM_SHORT_STANDARD;
|
|
UnicodeString stdName(tmpNameBuf, 0, UPRV_LENGTHOF(tmpNameBuf));
|
|
fTimeZoneNames->getDisplayName(tzID, stdNameType, date, stdName);
|
|
if (!stdName.isEmpty()) {
|
|
name.setTo(stdName);
|
|
|
|
// TODO: revisit this issue later
|
|
// In CLDR, a same display name is used for both generic and standard
|
|
// for some meta zones in some locales. This looks like a data bugs.
|
|
// For now, we check if the standard name is different from its generic
|
|
// name below.
|
|
UChar genNameBuf[64];
|
|
UnicodeString mzGenericName(genNameBuf, 0, UPRV_LENGTHOF(genNameBuf));
|
|
fTimeZoneNames->getMetaZoneDisplayName(mzID, nameType, mzGenericName);
|
|
if (stdName.caseCompare(mzGenericName, 0) == 0) {
|
|
name.setToBogus();
|
|
}
|
|
}
|
|
}
|
|
if (name.isEmpty()) {
|
|
// Get a name from meta zone
|
|
UnicodeString mzName(tmpNameBuf, 0, UPRV_LENGTHOF(tmpNameBuf));
|
|
fTimeZoneNames->getMetaZoneDisplayName(mzID, nameType, mzName);
|
|
if (!mzName.isEmpty()) {
|
|
// Check if we need to use a partial location format.
|
|
// This check is done by comparing offset with the meta zone's
|
|
// golden zone at the given date.
|
|
UChar idBuf[32];
|
|
UnicodeString goldenID(idBuf, 0, UPRV_LENGTHOF(idBuf));
|
|
fTimeZoneNames->getReferenceZoneID(mzID, fTargetRegion, goldenID);
|
|
if (!goldenID.isEmpty() && goldenID != tzID) {
|
|
TimeZone *goldenZone = TimeZone::createTimeZone(goldenID);
|
|
int32_t raw1, sav1;
|
|
|
|
// Check offset in the golden zone with wall time.
|
|
// With getOffset(date, false, offsets1),
|
|
// you may get incorrect results because of time overlap at DST->STD
|
|
// transition.
|
|
goldenZone->getOffset(date + raw + sav, TRUE, raw1, sav1, status);
|
|
delete goldenZone;
|
|
if (U_SUCCESS(status)) {
|
|
if (raw != raw1 || sav != sav1) {
|
|
// Now we need to use a partial location format
|
|
getPartialLocationName(tzID, mzID, (nameType == UTZNM_LONG_GENERIC), mzName, name);
|
|
} else {
|
|
name.setTo(mzName);
|
|
}
|
|
}
|
|
} else {
|
|
name.setTo(mzName);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return name;
|
|
}
|
|
|
|
UnicodeString&
|
|
TZGNCore::getPartialLocationName(const UnicodeString& tzCanonicalID,
|
|
const UnicodeString& mzID, UBool isLong, const UnicodeString& mzDisplayName,
|
|
UnicodeString& name) const {
|
|
name.setToBogus();
|
|
if (tzCanonicalID.isEmpty() || mzID.isEmpty() || mzDisplayName.isEmpty()) {
|
|
return name;
|
|
}
|
|
|
|
const UChar *uplname = NULL;
|
|
TZGNCore *nonConstThis = const_cast<TZGNCore *>(this);
|
|
umtx_lock(&gLock);
|
|
{
|
|
uplname = nonConstThis->getPartialLocationName(tzCanonicalID, mzID, isLong, mzDisplayName);
|
|
}
|
|
umtx_unlock(&gLock);
|
|
|
|
if (uplname == NULL) {
|
|
name.setToBogus();
|
|
} else {
|
|
name.setTo(TRUE, uplname, -1);
|
|
}
|
|
return name;
|
|
}
|
|
|
|
/*
|
|
* This method updates the cache and must be called with a lock
|
|
*/
|
|
const UChar*
|
|
TZGNCore::getPartialLocationName(const UnicodeString& tzCanonicalID,
|
|
const UnicodeString& mzID, UBool isLong, const UnicodeString& mzDisplayName) {
|
|
U_ASSERT(!tzCanonicalID.isEmpty());
|
|
U_ASSERT(!mzID.isEmpty());
|
|
U_ASSERT(!mzDisplayName.isEmpty());
|
|
|
|
PartialLocationKey key;
|
|
key.tzID = ZoneMeta::findTimeZoneID(tzCanonicalID);
|
|
key.mzID = ZoneMeta::findMetaZoneID(mzID);
|
|
key.isLong = isLong;
|
|
U_ASSERT(key.tzID != NULL && key.mzID != NULL);
|
|
|
|
const UChar* uplname = (const UChar*)uhash_get(fPartialLocationNamesMap, (void *)&key);
|
|
if (uplname != NULL) {
|
|
return uplname;
|
|
}
|
|
|
|
UnicodeString location;
|
|
UnicodeString usCountryCode;
|
|
ZoneMeta::getCanonicalCountry(tzCanonicalID, usCountryCode);
|
|
if (!usCountryCode.isEmpty()) {
|
|
char countryCode[ULOC_COUNTRY_CAPACITY];
|
|
U_ASSERT(usCountryCode.length() < ULOC_COUNTRY_CAPACITY);
|
|
int32_t ccLen = usCountryCode.extract(0, usCountryCode.length(), countryCode, sizeof(countryCode), US_INV);
|
|
countryCode[ccLen] = 0;
|
|
|
|
UnicodeString regionalGolden;
|
|
fTimeZoneNames->getReferenceZoneID(mzID, countryCode, regionalGolden);
|
|
if (tzCanonicalID == regionalGolden) {
|
|
// Use country name
|
|
fLocaleDisplayNames->regionDisplayName(countryCode, location);
|
|
} else {
|
|
// Otherwise, use exemplar city name
|
|
fTimeZoneNames->getExemplarLocationName(tzCanonicalID, location);
|
|
}
|
|
} else {
|
|
fTimeZoneNames->getExemplarLocationName(tzCanonicalID, location);
|
|
if (location.isEmpty()) {
|
|
// This could happen when the time zone is not associated with a country,
|
|
// and its ID is not hierarchical, for example, CST6CDT.
|
|
// We use the canonical ID itself as the location for this case.
|
|
location.setTo(tzCanonicalID);
|
|
}
|
|
}
|
|
|
|
UErrorCode status = U_ZERO_ERROR;
|
|
UnicodeString name;
|
|
fFallbackFormat.format(location, mzDisplayName, name, status);
|
|
if (U_FAILURE(status)) {
|
|
return NULL;
|
|
}
|
|
|
|
uplname = fStringPool.get(name, status);
|
|
if (U_SUCCESS(status)) {
|
|
// Add the name to cache
|
|
PartialLocationKey* cacheKey = (PartialLocationKey *)uprv_malloc(sizeof(PartialLocationKey));
|
|
if (cacheKey != NULL) {
|
|
cacheKey->tzID = key.tzID;
|
|
cacheKey->mzID = key.mzID;
|
|
cacheKey->isLong = key.isLong;
|
|
uhash_put(fPartialLocationNamesMap, (void *)cacheKey, (void *)uplname, &status);
|
|
if (U_FAILURE(status)) {
|
|
uprv_free(cacheKey);
|
|
} else {
|
|
// put the name to the local trie as well
|
|
GNameInfo *nameinfo = (ZNameInfo *)uprv_malloc(sizeof(GNameInfo));
|
|
if (nameinfo != NULL) {
|
|
nameinfo->type = isLong ? UTZGNM_LONG : UTZGNM_SHORT;
|
|
nameinfo->tzID = key.tzID;
|
|
fGNamesTrie.put(uplname, nameinfo, status);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return uplname;
|
|
}
|
|
|
|
/*
|
|
* This method updates the cache and must be called with a lock,
|
|
* except initializer.
|
|
*/
|
|
void
|
|
TZGNCore::loadStrings(const UnicodeString& tzCanonicalID) {
|
|
// load the generic location name
|
|
getGenericLocationName(tzCanonicalID);
|
|
|
|
// partial location names
|
|
UErrorCode status = U_ZERO_ERROR;
|
|
|
|
const UnicodeString *mzID;
|
|
UnicodeString goldenID;
|
|
UnicodeString mzGenName;
|
|
UTimeZoneNameType genNonLocTypes[] = {
|
|
UTZNM_LONG_GENERIC, UTZNM_SHORT_GENERIC,
|
|
UTZNM_UNKNOWN /*terminator*/
|
|
};
|
|
|
|
StringEnumeration *mzIDs = fTimeZoneNames->getAvailableMetaZoneIDs(tzCanonicalID, status);
|
|
while ((mzID = mzIDs->snext(status))) {
|
|
if (U_FAILURE(status)) {
|
|
break;
|
|
}
|
|
// if this time zone is not the golden zone of the meta zone,
|
|
// partial location name (such as "PT (Los Angeles)") might be
|
|
// available.
|
|
fTimeZoneNames->getReferenceZoneID(*mzID, fTargetRegion, goldenID);
|
|
if (tzCanonicalID != goldenID) {
|
|
for (int32_t i = 0; genNonLocTypes[i] != UTZNM_UNKNOWN; i++) {
|
|
fTimeZoneNames->getMetaZoneDisplayName(*mzID, genNonLocTypes[i], mzGenName);
|
|
if (!mzGenName.isEmpty()) {
|
|
// getPartialLocationName formats a name and put it into the trie
|
|
getPartialLocationName(tzCanonicalID, *mzID,
|
|
(genNonLocTypes[i] == UTZNM_LONG_GENERIC), mzGenName);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (mzIDs != NULL) {
|
|
delete mzIDs;
|
|
}
|
|
}
|
|
|
|
int32_t
|
|
TZGNCore::findBestMatch(const UnicodeString& text, int32_t start, uint32_t types,
|
|
UnicodeString& tzID, UTimeZoneFormatTimeType& timeType, UErrorCode& status) const {
|
|
timeType = UTZFMT_TIME_TYPE_UNKNOWN;
|
|
tzID.setToBogus();
|
|
|
|
if (U_FAILURE(status)) {
|
|
return 0;
|
|
}
|
|
|
|
// Find matches in the TimeZoneNames first
|
|
TimeZoneNames::MatchInfoCollection *tznamesMatches = findTimeZoneNames(text, start, types, status);
|
|
if (U_FAILURE(status)) {
|
|
return 0;
|
|
}
|
|
|
|
int32_t bestMatchLen = 0;
|
|
UTimeZoneFormatTimeType bestMatchTimeType = UTZFMT_TIME_TYPE_UNKNOWN;
|
|
UnicodeString bestMatchTzID;
|
|
// UBool isLongStandard = FALSE; // workaround - see the comments below
|
|
UBool isStandard = FALSE; // TODO: Temporary hack (on hack) for short standard name/location name conflict (found in zh_Hant), should be removed after CLDR 21m1 integration
|
|
|
|
if (tznamesMatches != NULL) {
|
|
UnicodeString mzID;
|
|
for (int32_t i = 0; i < tznamesMatches->size(); i++) {
|
|
int32_t len = tznamesMatches->getMatchLengthAt(i);
|
|
if (len > bestMatchLen) {
|
|
bestMatchLen = len;
|
|
if (!tznamesMatches->getTimeZoneIDAt(i, bestMatchTzID)) {
|
|
// name for a meta zone
|
|
if (tznamesMatches->getMetaZoneIDAt(i, mzID)) {
|
|
fTimeZoneNames->getReferenceZoneID(mzID, fTargetRegion, bestMatchTzID);
|
|
}
|
|
}
|
|
UTimeZoneNameType nameType = tznamesMatches->getNameTypeAt(i);
|
|
if (U_FAILURE(status)) {
|
|
break;
|
|
}
|
|
switch (nameType) {
|
|
case UTZNM_LONG_STANDARD:
|
|
// isLongStandard = TRUE;
|
|
case UTZNM_SHORT_STANDARD: // this one is never used for generic, but just in case
|
|
isStandard = TRUE; // TODO: Remove this later, see the comments above.
|
|
bestMatchTimeType = UTZFMT_TIME_TYPE_STANDARD;
|
|
break;
|
|
case UTZNM_LONG_DAYLIGHT:
|
|
case UTZNM_SHORT_DAYLIGHT: // this one is never used for generic, but just in case
|
|
bestMatchTimeType = UTZFMT_TIME_TYPE_DAYLIGHT;
|
|
break;
|
|
default:
|
|
bestMatchTimeType = UTZFMT_TIME_TYPE_UNKNOWN;
|
|
}
|
|
}
|
|
}
|
|
delete tznamesMatches;
|
|
if (U_FAILURE(status)) {
|
|
return 0;
|
|
}
|
|
|
|
if (bestMatchLen == (text.length() - start)) {
|
|
// Full match
|
|
|
|
//tzID.setTo(bestMatchTzID);
|
|
//timeType = bestMatchTimeType;
|
|
//return bestMatchLen;
|
|
|
|
// TODO Some time zone uses a same name for the long standard name
|
|
// and the location name. When the match is a long standard name,
|
|
// then we need to check if the name is same with the location name.
|
|
// This is probably a data error or a design bug.
|
|
/*
|
|
if (!isLongStandard) {
|
|
tzID.setTo(bestMatchTzID);
|
|
timeType = bestMatchTimeType;
|
|
return bestMatchLen;
|
|
}
|
|
*/
|
|
// TODO The deprecation of commonlyUsed flag introduced the name
|
|
// conflict not only for long standard names, but short standard names too.
|
|
// These short names (found in zh_Hant) should be gone once we clean
|
|
// up CLDR time zone display name data. Once the short name conflict
|
|
// problem (with location name) is resolved, we should change the condition
|
|
// below back to the original one above. -Yoshito (2011-09-14)
|
|
if (!isStandard) {
|
|
tzID.setTo(bestMatchTzID);
|
|
timeType = bestMatchTimeType;
|
|
return bestMatchLen;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Find matches in the local trie
|
|
TimeZoneGenericNameMatchInfo *localMatches = findLocal(text, start, types, status);
|
|
if (U_FAILURE(status)) {
|
|
return 0;
|
|
}
|
|
if (localMatches != NULL) {
|
|
for (int32_t i = 0; i < localMatches->size(); i++) {
|
|
int32_t len = localMatches->getMatchLength(i);
|
|
|
|
// TODO See the above TODO. We use len >= bestMatchLen
|
|
// because of the long standard/location name collision
|
|
// problem. If it is also a location name, carrying
|
|
// timeType = UTZFMT_TIME_TYPE_STANDARD will cause a
|
|
// problem in SimpleDateFormat
|
|
if (len >= bestMatchLen) {
|
|
bestMatchLen = localMatches->getMatchLength(i);
|
|
bestMatchTimeType = UTZFMT_TIME_TYPE_UNKNOWN; // because generic
|
|
localMatches->getTimeZoneID(i, bestMatchTzID);
|
|
}
|
|
}
|
|
delete localMatches;
|
|
}
|
|
|
|
if (bestMatchLen > 0) {
|
|
timeType = bestMatchTimeType;
|
|
tzID.setTo(bestMatchTzID);
|
|
}
|
|
return bestMatchLen;
|
|
}
|
|
|
|
TimeZoneGenericNameMatchInfo*
|
|
TZGNCore::findLocal(const UnicodeString& text, int32_t start, uint32_t types, UErrorCode& status) const {
|
|
GNameSearchHandler handler(types);
|
|
|
|
TZGNCore *nonConstThis = const_cast<TZGNCore *>(this);
|
|
|
|
umtx_lock(&gLock);
|
|
{
|
|
fGNamesTrie.search(text, start, (TextTrieMapSearchResultHandler *)&handler, status);
|
|
}
|
|
umtx_unlock(&gLock);
|
|
|
|
if (U_FAILURE(status)) {
|
|
return NULL;
|
|
}
|
|
|
|
TimeZoneGenericNameMatchInfo *gmatchInfo = NULL;
|
|
|
|
int32_t maxLen = 0;
|
|
UVector *results = handler.getMatches(maxLen);
|
|
if (results != NULL && ((maxLen == (text.length() - start)) || fGNamesTrieFullyLoaded)) {
|
|
// perfect match
|
|
gmatchInfo = new TimeZoneGenericNameMatchInfo(results);
|
|
if (gmatchInfo == NULL) {
|
|
status = U_MEMORY_ALLOCATION_ERROR;
|
|
delete results;
|
|
return NULL;
|
|
}
|
|
return gmatchInfo;
|
|
}
|
|
|
|
if (results != NULL) {
|
|
delete results;
|
|
}
|
|
|
|
// All names are not yet loaded into the local trie.
|
|
// Load all available names into the trie. This could be very heavy.
|
|
umtx_lock(&gLock);
|
|
{
|
|
if (!fGNamesTrieFullyLoaded) {
|
|
StringEnumeration *tzIDs = TimeZone::createTimeZoneIDEnumeration(UCAL_ZONE_TYPE_CANONICAL, NULL, NULL, status);
|
|
if (U_SUCCESS(status)) {
|
|
const UnicodeString *tzID;
|
|
while ((tzID = tzIDs->snext(status))) {
|
|
if (U_FAILURE(status)) {
|
|
break;
|
|
}
|
|
nonConstThis->loadStrings(*tzID);
|
|
}
|
|
}
|
|
if (tzIDs != NULL) {
|
|
delete tzIDs;
|
|
}
|
|
|
|
if (U_SUCCESS(status)) {
|
|
nonConstThis->fGNamesTrieFullyLoaded = TRUE;
|
|
}
|
|
}
|
|
}
|
|
umtx_unlock(&gLock);
|
|
|
|
if (U_FAILURE(status)) {
|
|
return NULL;
|
|
}
|
|
|
|
umtx_lock(&gLock);
|
|
{
|
|
// now try it again
|
|
fGNamesTrie.search(text, start, (TextTrieMapSearchResultHandler *)&handler, status);
|
|
}
|
|
umtx_unlock(&gLock);
|
|
|
|
results = handler.getMatches(maxLen);
|
|
if (results != NULL && maxLen > 0) {
|
|
gmatchInfo = new TimeZoneGenericNameMatchInfo(results);
|
|
if (gmatchInfo == NULL) {
|
|
status = U_MEMORY_ALLOCATION_ERROR;
|
|
delete results;
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
return gmatchInfo;
|
|
}
|
|
|
|
TimeZoneNames::MatchInfoCollection*
|
|
TZGNCore::findTimeZoneNames(const UnicodeString& text, int32_t start, uint32_t types, UErrorCode& status) const {
|
|
// Check if the target name typs is really in the TimeZoneNames
|
|
uint32_t nameTypes = 0;
|
|
if (types & UTZGNM_LONG) {
|
|
nameTypes |= (UTZNM_LONG_GENERIC | UTZNM_LONG_STANDARD);
|
|
}
|
|
if (types & UTZGNM_SHORT) {
|
|
nameTypes |= (UTZNM_SHORT_GENERIC | UTZNM_SHORT_STANDARD);
|
|
}
|
|
|
|
if (types) {
|
|
// Find matches in the TimeZoneNames
|
|
return fTimeZoneNames->find(text, start, nameTypes, status);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
typedef struct TZGNCoreRef {
|
|
TZGNCore* obj;
|
|
int32_t refCount;
|
|
double lastAccess;
|
|
} TZGNCoreRef;
|
|
|
|
// TZGNCore object cache handling
|
|
static UMutex gTZGNLock = U_MUTEX_INITIALIZER;
|
|
static UHashtable *gTZGNCoreCache = NULL;
|
|
static UBool gTZGNCoreCacheInitialized = FALSE;
|
|
|
|
// Access count - incremented every time up to SWEEP_INTERVAL,
|
|
// then reset to 0
|
|
static int32_t gAccessCount = 0;
|
|
|
|
// Interval for calling the cache sweep function - every 100 times
|
|
#define SWEEP_INTERVAL 100
|
|
|
|
// Cache expiration in millisecond. When a cached entry is no
|
|
// longer referenced and exceeding this threshold since last
|
|
// access time, then the cache entry will be deleted by the sweep
|
|
// function. For now, 3 minutes.
|
|
#define CACHE_EXPIRATION 180000.0
|
|
|
|
U_CDECL_BEGIN
|
|
/**
|
|
* Cleanup callback func
|
|
*/
|
|
static UBool U_CALLCONV tzgnCore_cleanup(void)
|
|
{
|
|
if (gTZGNCoreCache != NULL) {
|
|
uhash_close(gTZGNCoreCache);
|
|
gTZGNCoreCache = NULL;
|
|
}
|
|
gTZGNCoreCacheInitialized = FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Deleter for TZGNCoreRef
|
|
*/
|
|
static void U_CALLCONV
|
|
deleteTZGNCoreRef(void *obj) {
|
|
icu::TZGNCoreRef *entry = (icu::TZGNCoreRef*)obj;
|
|
delete (icu::TZGNCore*) entry->obj;
|
|
uprv_free(entry);
|
|
}
|
|
U_CDECL_END
|
|
|
|
/**
|
|
* Function used for removing unreferrenced cache entries exceeding
|
|
* the expiration time. This function must be called with in the mutex
|
|
* block.
|
|
*/
|
|
static void sweepCache() {
|
|
int32_t pos = UHASH_FIRST;
|
|
const UHashElement* elem;
|
|
double now = (double)uprv_getUTCtime();
|
|
|
|
while ((elem = uhash_nextElement(gTZGNCoreCache, &pos))) {
|
|
TZGNCoreRef *entry = (TZGNCoreRef *)elem->value.pointer;
|
|
if (entry->refCount <= 0 && (now - entry->lastAccess) > CACHE_EXPIRATION) {
|
|
// delete this entry
|
|
uhash_removeElement(gTZGNCoreCache, elem);
|
|
}
|
|
}
|
|
}
|
|
|
|
TimeZoneGenericNames::TimeZoneGenericNames()
|
|
: fRef(0) {
|
|
}
|
|
|
|
TimeZoneGenericNames::~TimeZoneGenericNames() {
|
|
umtx_lock(&gTZGNLock);
|
|
{
|
|
U_ASSERT(fRef->refCount > 0);
|
|
// Just decrement the reference count
|
|
fRef->refCount--;
|
|
}
|
|
umtx_unlock(&gTZGNLock);
|
|
}
|
|
|
|
TimeZoneGenericNames*
|
|
TimeZoneGenericNames::createInstance(const Locale& locale, UErrorCode& status) {
|
|
if (U_FAILURE(status)) {
|
|
return NULL;
|
|
}
|
|
TimeZoneGenericNames* instance = new TimeZoneGenericNames();
|
|
if (instance == NULL) {
|
|
status = U_MEMORY_ALLOCATION_ERROR;
|
|
return NULL;
|
|
}
|
|
|
|
TZGNCoreRef *cacheEntry = NULL;
|
|
{
|
|
Mutex lock(&gTZGNLock);
|
|
|
|
if (!gTZGNCoreCacheInitialized) {
|
|
// Create empty hashtable
|
|
gTZGNCoreCache = uhash_open(uhash_hashChars, uhash_compareChars, NULL, &status);
|
|
if (U_SUCCESS(status)) {
|
|
uhash_setKeyDeleter(gTZGNCoreCache, uprv_free);
|
|
uhash_setValueDeleter(gTZGNCoreCache, deleteTZGNCoreRef);
|
|
gTZGNCoreCacheInitialized = TRUE;
|
|
ucln_i18n_registerCleanup(UCLN_I18N_TIMEZONEGENERICNAMES, tzgnCore_cleanup);
|
|
}
|
|
}
|
|
if (U_FAILURE(status)) {
|
|
return NULL;
|
|
}
|
|
|
|
// Check the cache, if not available, create new one and cache
|
|
const char *key = locale.getName();
|
|
cacheEntry = (TZGNCoreRef *)uhash_get(gTZGNCoreCache, key);
|
|
if (cacheEntry == NULL) {
|
|
TZGNCore *tzgnCore = NULL;
|
|
char *newKey = NULL;
|
|
|
|
tzgnCore = new TZGNCore(locale, status);
|
|
if (tzgnCore == NULL) {
|
|
status = U_MEMORY_ALLOCATION_ERROR;
|
|
}
|
|
if (U_SUCCESS(status)) {
|
|
newKey = (char *)uprv_malloc(uprv_strlen(key) + 1);
|
|
if (newKey == NULL) {
|
|
status = U_MEMORY_ALLOCATION_ERROR;
|
|
} else {
|
|
uprv_strcpy(newKey, key);
|
|
}
|
|
}
|
|
if (U_SUCCESS(status)) {
|
|
cacheEntry = (TZGNCoreRef *)uprv_malloc(sizeof(TZGNCoreRef));
|
|
if (cacheEntry == NULL) {
|
|
status = U_MEMORY_ALLOCATION_ERROR;
|
|
} else {
|
|
cacheEntry->obj = tzgnCore;
|
|
cacheEntry->refCount = 1;
|
|
cacheEntry->lastAccess = (double)uprv_getUTCtime();
|
|
|
|
uhash_put(gTZGNCoreCache, newKey, cacheEntry, &status);
|
|
}
|
|
}
|
|
if (U_FAILURE(status)) {
|
|
if (tzgnCore != NULL) {
|
|
delete tzgnCore;
|
|
}
|
|
if (newKey != NULL) {
|
|
uprv_free(newKey);
|
|
}
|
|
if (cacheEntry != NULL) {
|
|
uprv_free(cacheEntry);
|
|
}
|
|
cacheEntry = NULL;
|
|
}
|
|
} else {
|
|
// Update the reference count
|
|
cacheEntry->refCount++;
|
|
cacheEntry->lastAccess = (double)uprv_getUTCtime();
|
|
}
|
|
gAccessCount++;
|
|
if (gAccessCount >= SWEEP_INTERVAL) {
|
|
// sweep
|
|
sweepCache();
|
|
gAccessCount = 0;
|
|
}
|
|
} // End of mutex locked block
|
|
|
|
if (cacheEntry == NULL) {
|
|
delete instance;
|
|
return NULL;
|
|
}
|
|
|
|
instance->fRef = cacheEntry;
|
|
return instance;
|
|
}
|
|
|
|
UBool
|
|
TimeZoneGenericNames::operator==(const TimeZoneGenericNames& other) const {
|
|
// Just compare if the other object also use the same
|
|
// ref entry
|
|
return fRef == other.fRef;
|
|
}
|
|
|
|
TimeZoneGenericNames*
|
|
TimeZoneGenericNames::clone() const {
|
|
TimeZoneGenericNames* other = new TimeZoneGenericNames();
|
|
if (other) {
|
|
umtx_lock(&gTZGNLock);
|
|
{
|
|
// Just increments the reference count
|
|
fRef->refCount++;
|
|
other->fRef = fRef;
|
|
}
|
|
umtx_unlock(&gTZGNLock);
|
|
}
|
|
return other;
|
|
}
|
|
|
|
UnicodeString&
|
|
TimeZoneGenericNames::getDisplayName(const TimeZone& tz, UTimeZoneGenericNameType type,
|
|
UDate date, UnicodeString& name) const {
|
|
return fRef->obj->getDisplayName(tz, type, date, name);
|
|
}
|
|
|
|
UnicodeString&
|
|
TimeZoneGenericNames::getGenericLocationName(const UnicodeString& tzCanonicalID, UnicodeString& name) const {
|
|
return fRef->obj->getGenericLocationName(tzCanonicalID, name);
|
|
}
|
|
|
|
int32_t
|
|
TimeZoneGenericNames::findBestMatch(const UnicodeString& text, int32_t start, uint32_t types,
|
|
UnicodeString& tzID, UTimeZoneFormatTimeType& timeType, UErrorCode& status) const {
|
|
return fRef->obj->findBestMatch(text, start, types, tzID, timeType, status);
|
|
}
|
|
|
|
U_NAMESPACE_END
|
|
#endif
|