1063 lines
35 KiB
C++
1063 lines
35 KiB
C++
/*
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*******************************************************************************
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* Copyright (C) 2011, International Business Machines Corporation and *
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* others. All Rights Reserved. *
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*******************************************************************************
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*/
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#include "unicode/utypes.h"
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#if !UCONFIG_NO_FORMATTING
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#include "tzgnames.h"
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#include "unicode/basictz.h"
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#include "unicode/locdspnm.h"
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#include "unicode/msgfmt.h"
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#include "unicode/rbtz.h"
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#include "unicode/simpletz.h"
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#include "unicode/vtzone.h"
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#include "cmemory.h"
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#include "cstring.h"
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#include "uhash.h"
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#include "uassert.h"
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#include "umutex.h"
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#include "uresimp.h"
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#include "ureslocs.h"
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#include "zonemeta.h"
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#include "tznames_impl.h"
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#include "olsontz.h"
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U_NAMESPACE_BEGIN
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#define ZID_KEY_MAX 128
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static const char gZoneStrings[] = "zoneStrings";
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static const char gRegionFormatTag[] = "regionFormat";
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static const char gFallbackRegionFormatTag[] = "fallbackRegionFormat";
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static const char gFallbackFormatTag[] = "fallbackFormat";
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static const UChar gEmpty[] = {0x00};
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static const UChar gDefRegionPattern[] = {0x7B, 0x30, 0x7D, 0x00}; // "{0}"
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static const UChar gDefFallbackRegionPattern[] = {0x7B, 0x31, 0x7D, 0x20, 0x28, 0x7B, 0x30, 0x7D, 0x29, 0x00}; // "{1} ({0})"
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static const UChar gDefFallbackPattern[] = {0x7B, 0x31, 0x7D, 0x20, 0x28, 0x7B, 0x30, 0x7D, 0x29, 0x00}; // "{1} ({0})"
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static const double kDstCheckRange = (double)184*U_MILLIS_PER_DAY;
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U_CDECL_BEGIN
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typedef struct PartialLocationKey {
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const UChar* tzID;
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const UChar* mzID;
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UBool isLong;
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} PartialLocationKey;
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/**
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* Hash function for partial location name hash key
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*/
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static int32_t U_CALLCONV
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hashPartialLocationKey(const UHashTok key) {
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// <tzID>&<mzID>#[L|S]
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PartialLocationKey *p = (PartialLocationKey *)key.pointer;
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UnicodeString str(p->tzID);
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str.append((UChar)0x26)
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.append(p->mzID)
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.append((UChar)0x23)
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.append((UChar)(p->isLong ? 0x4C : 0x53));
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return uhash_hashUCharsN(str.getBuffer(), str.length());
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}
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/**
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* Comparer for partial location name hash key
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*/
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static UBool U_CALLCONV
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comparePartialLocationKey(const UHashTok key1, const UHashTok key2) {
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PartialLocationKey *p1 = (PartialLocationKey *)key1.pointer;
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PartialLocationKey *p2 = (PartialLocationKey *)key2.pointer;
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if (p1 == p2) {
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return TRUE;
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}
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if (p1 == NULL || p2 == NULL) {
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return FALSE;
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}
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// We just check identity of tzID/mzID
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return (p1->tzID == p2->tzID && p1->mzID == p2->mzID && p1->isLong == p2->isLong);
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}
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/**
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* Deleter for GNameInfo
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*/
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static void U_CALLCONV
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deleteGNameInfo(void *obj) {
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uprv_free(obj);
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}
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/**
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* GNameInfo stores zone name information in the local trie
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*/
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typedef struct GNameInfo {
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UTimeZoneGenericNameType type;
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const UChar* tzID;
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} ZNameInfo;
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/**
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* GMatchInfo stores zone name match information used by find method
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*/
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typedef struct GMatchInfo {
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const GNameInfo* gnameInfo;
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int32_t matchLength;
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UTimeZoneTimeType timeType;
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} ZMatchInfo;
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U_CDECL_END
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// ---------------------------------------------------
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// The class stores time zone generic name match information
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// ---------------------------------------------------
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TimeZoneGenericNameMatchInfo::TimeZoneGenericNameMatchInfo(UVector* matches)
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: fMatches(matches) {
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}
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TimeZoneGenericNameMatchInfo::~TimeZoneGenericNameMatchInfo() {
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if (fMatches != NULL) {
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delete fMatches;
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}
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}
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int32_t
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TimeZoneGenericNameMatchInfo::size() const {
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if (fMatches == NULL) {
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return 0;
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}
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return fMatches->size();
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}
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UTimeZoneGenericNameType
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TimeZoneGenericNameMatchInfo::getGenericNameType(int32_t index) const {
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GMatchInfo *minfo = (GMatchInfo *)fMatches->elementAt(index);
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if (minfo != NULL) {
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return static_cast<UTimeZoneGenericNameType>(minfo->gnameInfo->type);
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}
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return UTZGNM_UNKNOWN;
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}
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int32_t
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TimeZoneGenericNameMatchInfo::getMatchLength(int32_t index) const {
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ZMatchInfo *minfo = (ZMatchInfo *)fMatches->elementAt(index);
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if (minfo != NULL) {
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return minfo->matchLength;
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}
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return -1;
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}
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UnicodeString&
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TimeZoneGenericNameMatchInfo::getTimeZoneID(int32_t index, UnicodeString& tzID) const {
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GMatchInfo *minfo = (GMatchInfo *)fMatches->elementAt(index);
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if (minfo != NULL && minfo->gnameInfo->tzID != NULL) {
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tzID.setTo(TRUE, minfo->gnameInfo->tzID, -1);
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} else {
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tzID.setToBogus();
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}
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return tzID;
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}
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// ---------------------------------------------------
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// GNameSearchHandler
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// ---------------------------------------------------
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class GNameSearchHandler : public TextTrieMapSearchResultHandler {
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public:
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GNameSearchHandler(uint32_t types);
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virtual ~GNameSearchHandler();
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UBool handleMatch(int32_t matchLength, const CharacterNode *node, UErrorCode &status);
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UVector* getMatches(int32_t& maxMatchLen);
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private:
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uint32_t fTypes;
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UVector* fResults;
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int32_t fMaxMatchLen;
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};
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GNameSearchHandler::GNameSearchHandler(uint32_t types)
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: fTypes(types), fResults(NULL), fMaxMatchLen(0) {
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}
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GNameSearchHandler::~GNameSearchHandler() {
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if (fResults != NULL) {
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delete fResults;
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}
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}
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UBool
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GNameSearchHandler::handleMatch(int32_t matchLength, const CharacterNode *node, UErrorCode &status) {
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if (U_FAILURE(status)) {
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return FALSE;
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}
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if (node->hasValues()) {
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int32_t valuesCount = node->countValues();
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for (int32_t i = 0; i < valuesCount; i++) {
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GNameInfo *nameinfo = (ZNameInfo *)node->getValue(i);
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if (nameinfo == NULL) {
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break;
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}
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if ((nameinfo->type & fTypes) != 0) {
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// matches a requested type
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if (fResults == NULL) {
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fResults = new UVector(uhash_freeBlock, NULL, status);
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if (fResults == NULL) {
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status = U_MEMORY_ALLOCATION_ERROR;
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}
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}
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if (U_SUCCESS(status)) {
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GMatchInfo *gmatch = (GMatchInfo *)uprv_malloc(sizeof(GMatchInfo));
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if (gmatch == NULL) {
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status = U_MEMORY_ALLOCATION_ERROR;
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} else {
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// add the match to the vector
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gmatch->gnameInfo = nameinfo;
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gmatch->matchLength = matchLength;
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gmatch->timeType = UTZFMT_TIME_TYPE_UNKNOWN;
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fResults->addElement(gmatch, status);
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if (U_FAILURE(status)) {
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uprv_free(gmatch);
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} else {
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if (matchLength > fMaxMatchLen) {
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fMaxMatchLen = matchLength;
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}
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}
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}
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}
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}
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}
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}
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return TRUE;
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}
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UVector*
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GNameSearchHandler::getMatches(int32_t& maxMatchLen) {
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// give the ownership to the caller
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UVector *results = fResults;
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maxMatchLen = fMaxMatchLen;
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// reset
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fResults = NULL;
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fMaxMatchLen = 0;
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return results;
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}
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// ---------------------------------------------------
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// TimeZoneGenericNames
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//
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// TimeZoneGenericNames is parallel to TimeZoneNames,
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// but handles run-time generated time zone names.
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// This is the main part of this module.
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// ---------------------------------------------------
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TimeZoneGenericNames::TimeZoneGenericNames(const Locale& locale, UErrorCode& status)
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: fLocale(locale),
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fLock(NULL),
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fTimeZoneNames(NULL),
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fLocationNamesMap(NULL),
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fPartialLocationNamesMap(NULL),
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fRegionFormat(NULL),
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fFallbackRegionFormat(NULL),
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fFallbackFormat(NULL),
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fLocaleDisplayNames(NULL),
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fStringPool(status),
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fGNamesTrie(TRUE, deleteGNameInfo),
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fGNamesTrieFullyLoaded(FALSE) {
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initialize(locale, status);
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}
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TimeZoneGenericNames::~TimeZoneGenericNames() {
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cleanup();
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umtx_destroy(&fLock);
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}
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void
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TimeZoneGenericNames::initialize(const Locale& locale, UErrorCode& status) {
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if (U_FAILURE(status)) {
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return;
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}
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// TimeZoneNames
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fTimeZoneNames = TimeZoneNames::createInstance(locale, status);
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if (U_FAILURE(status)) {
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return;
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}
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// Initialize format patterns
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UnicodeString rpat(TRUE, gDefRegionPattern, -1);
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UnicodeString frpat(TRUE, gDefFallbackRegionPattern, -1);
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UnicodeString fpat(TRUE, gDefFallbackPattern, -1);
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UErrorCode tmpsts = U_ZERO_ERROR; // OK with fallback warning..
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UResourceBundle *zoneStrings = ures_open(U_ICUDATA_ZONE, locale.getName(), &tmpsts);
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zoneStrings = ures_getByKeyWithFallback(zoneStrings, gZoneStrings, zoneStrings, &tmpsts);
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if (U_SUCCESS(tmpsts)) {
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const UChar *regionPattern = ures_getStringByKeyWithFallback(zoneStrings, gRegionFormatTag, NULL, &tmpsts);
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if (U_SUCCESS(tmpsts) && u_strlen(regionPattern) > 0) {
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rpat.setTo(regionPattern);
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}
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tmpsts = U_ZERO_ERROR;
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const UChar *fallbackRegionPattern = ures_getStringByKeyWithFallback(zoneStrings, gFallbackRegionFormatTag, NULL, &tmpsts);
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if (U_SUCCESS(tmpsts) && u_strlen(fallbackRegionPattern) > 0) {
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frpat.setTo(fallbackRegionPattern);
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}
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tmpsts = U_ZERO_ERROR;
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const UChar *fallbackPattern = ures_getStringByKeyWithFallback(zoneStrings, gFallbackFormatTag, NULL, &tmpsts);
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if (U_SUCCESS(tmpsts) && u_strlen(fallbackPattern) > 0) {
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fpat.setTo(fallbackPattern);
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}
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}
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ures_close(zoneStrings);
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fRegionFormat = new MessageFormat(rpat, status);
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if (fRegionFormat == NULL) {
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status = U_MEMORY_ALLOCATION_ERROR;
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}
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fFallbackRegionFormat = new MessageFormat(frpat, status);
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if (fFallbackRegionFormat == NULL) {
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status = U_MEMORY_ALLOCATION_ERROR;
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}
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fFallbackFormat = new MessageFormat(fpat, status);
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if (fFallbackFormat == NULL) {
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status = U_MEMORY_ALLOCATION_ERROR;
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}
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if (U_FAILURE(status)) {
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cleanup();
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return;
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}
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// locale display names
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fLocaleDisplayNames = LocaleDisplayNames::createInstance(locale);
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// hash table for names - no key/value deleters
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fLocationNamesMap = uhash_open(uhash_hashUChars, uhash_compareUChars, NULL, &status);
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if (U_FAILURE(status)) {
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cleanup();
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return;
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}
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fPartialLocationNamesMap = uhash_open(hashPartialLocationKey, comparePartialLocationKey, NULL, &status);
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if (U_FAILURE(status)) {
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cleanup();
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return;
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}
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uhash_setKeyDeleter(fPartialLocationNamesMap, uhash_freeBlock);
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// no value deleter
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// target region
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const char* region = fLocale.getCountry();
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int32_t regionLen = uprv_strlen(region);
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if (regionLen == 0) {
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char loc[ULOC_FULLNAME_CAPACITY];
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uloc_addLikelySubtags(fLocale.getName(), loc, sizeof(loc), &status);
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regionLen = uloc_getCountry(loc, fTargetRegion, sizeof(fTargetRegion), &status);
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if (U_SUCCESS(status)) {
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fTargetRegion[regionLen] = 0;
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} else {
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cleanup();
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return;
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}
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} else if (regionLen < (int32_t)sizeof(fTargetRegion)) {
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uprv_strcpy(fTargetRegion, region);
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} else {
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fTargetRegion[0] = 0;
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}
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// preload generic names for the default zone
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TimeZone *tz = TimeZone::createDefault();
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const UChar *tzID = ZoneMeta::getCanonicalCLDRID(*tz);
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if (tzID != NULL) {
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loadStrings(UnicodeString(tzID));
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}
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delete tz;
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}
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void
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TimeZoneGenericNames::cleanup() {
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if (fRegionFormat != NULL) {
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delete fRegionFormat;
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}
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if (fFallbackRegionFormat != NULL) {
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delete fFallbackRegionFormat;
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}
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if (fFallbackFormat != NULL) {
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delete fFallbackFormat;
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}
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if (fLocaleDisplayNames != NULL) {
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delete fLocaleDisplayNames;
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}
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if (fTimeZoneNames != NULL) {
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delete fTimeZoneNames;
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}
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uhash_close(fLocationNamesMap);
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uhash_close(fPartialLocationNamesMap);
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}
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UnicodeString&
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TimeZoneGenericNames::getDisplayName(const TimeZone& tz, UTimeZoneGenericNameType type, UDate date, UnicodeString& name) const {
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name.setToBogus();
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switch (type) {
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case UTZGNM_LOCATION:
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{
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const UChar* tzCanonicalID = ZoneMeta::getCanonicalCLDRID(tz);
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if (tzCanonicalID != NULL) {
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getGenericLocationName(UnicodeString(tzCanonicalID), name);
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}
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}
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break;
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case UTZGNM_LONG:
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case UTZGNM_SHORT:
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formatGenericNonLocationName(tz, type, date, name);
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if (name.isEmpty()) {
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const UChar* tzCanonicalID = ZoneMeta::getCanonicalCLDRID(tz);
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if (tzCanonicalID != NULL) {
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getGenericLocationName(UnicodeString(tzCanonicalID), name);
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}
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}
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break;
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default:
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break;
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}
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return name;
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}
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UnicodeString&
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TimeZoneGenericNames::getGenericLocationName(const UnicodeString& tzCanonicalID, UnicodeString& name) const {
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if (tzCanonicalID.isEmpty()) {
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name.setToBogus();
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return name;
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}
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const UChar *locname = NULL;
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TimeZoneGenericNames *nonConstThis = const_cast<TimeZoneGenericNames *>(this);
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umtx_lock(&nonConstThis->fLock);
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{
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locname = nonConstThis->getGenericLocationName(tzCanonicalID);
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}
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umtx_unlock(&nonConstThis->fLock);
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if (locname == NULL) {
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name.setToBogus();
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} else {
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name.setTo(TRUE, locname, -1);
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}
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return name;
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}
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/*
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* This method updates the cache and must be called with a lock
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*/
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const UChar*
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TimeZoneGenericNames::getGenericLocationName(const UnicodeString& tzCanonicalID) {
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U_ASSERT(!tzCanonicalID.isEmpty());
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if (tzCanonicalID.length() > ZID_KEY_MAX) {
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return NULL;
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}
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UErrorCode status = U_ZERO_ERROR;
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UChar tzIDKey[ZID_KEY_MAX + 1];
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int32_t tzIDKeyLen = tzCanonicalID.extract(tzIDKey, ZID_KEY_MAX + 1, status);
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U_ASSERT(status == U_ZERO_ERROR); // already checked length above
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tzIDKey[tzIDKeyLen] = 0;
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const UChar *locname = (const UChar *)uhash_get(fLocationNamesMap, tzIDKey);
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if (locname != NULL) {
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// gEmpty indicate the name is not available
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if (locname == gEmpty) {
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return NULL;
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}
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return locname;
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}
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// Construct location name
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UnicodeString name;
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UBool isSingleCountry = FALSE;
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UnicodeString usCountryCode;
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ZoneMeta::getSingleCountry(tzCanonicalID, usCountryCode);
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if (!usCountryCode.isEmpty()) {
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isSingleCountry = TRUE;
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} else {
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ZoneMeta::getCanonicalCountry(tzCanonicalID, usCountryCode);
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}
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if (!usCountryCode.isEmpty()) {
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char countryCode[ULOC_COUNTRY_CAPACITY];
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U_ASSERT(usCountryCode.length() < ULOC_COUNTRY_CAPACITY);
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int32_t ccLen = usCountryCode.extract(0, usCountryCode.length(), countryCode, sizeof(countryCode), US_INV);
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countryCode[ccLen] = 0;
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UnicodeString country;
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fLocaleDisplayNames->regionDisplayName(countryCode, country);
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// Format
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FieldPosition fpos;
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if (isSingleCountry) {
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// If the zone is only one zone in the country, do not add city
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Formattable param[] = {
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Formattable(country)
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};
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fRegionFormat->format(param, 1, name, fpos, status);
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} else {
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// getExemplarLocationName should retur non-empty string
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// if the time zone is associated with a region
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UnicodeString city;
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fTimeZoneNames->getExemplarLocationName(tzCanonicalID, city);
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Formattable params[] = {
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Formattable(city),
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Formattable(country)
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};
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fFallbackRegionFormat->format(params, 2, name, fpos, status);
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}
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if (U_FAILURE(status)) {
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return NULL;
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}
|
|
}
|
|
|
|
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&
|
|
TimeZoneGenericNames::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(uID);
|
|
|
|
// 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
|
|
UnicodeString mzID;
|
|
fTimeZoneNames->getMetaZoneID(tzID, date, mzID);
|
|
if (!mzID.isEmpty()) {
|
|
UErrorCode status = U_ZERO_ERROR;
|
|
UBool useStandard = FALSE;
|
|
int32_t raw, sav;
|
|
|
|
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_COMMONLY_USED;
|
|
UnicodeString stdName;
|
|
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.
|
|
UnicodeString mzGenericName;
|
|
fTimeZoneNames->getMetaZoneDisplayName(mzID, nameType, mzGenericName);
|
|
if (stdName.caseCompare(mzGenericName, 0) == 0) {
|
|
name.setToBogus();
|
|
}
|
|
}
|
|
}
|
|
if (name.isEmpty()) {
|
|
// Get a name from meta zone
|
|
UnicodeString mzName;
|
|
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.
|
|
UnicodeString goldenID;
|
|
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&
|
|
TimeZoneGenericNames::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;
|
|
TimeZoneGenericNames *nonConstThis = const_cast<TimeZoneGenericNames *>(this);
|
|
umtx_lock(&nonConstThis->fLock);
|
|
{
|
|
uplname = nonConstThis->getPartialLocationName(tzCanonicalID, mzID, isLong, mzDisplayName);
|
|
}
|
|
umtx_unlock(&nonConstThis->fLock);
|
|
|
|
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*
|
|
TimeZoneGenericNames::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;
|
|
|
|
FieldPosition fpos;
|
|
Formattable param[] = {
|
|
Formattable(location),
|
|
Formattable(mzDisplayName)
|
|
};
|
|
fFallbackFormat->format(param, 2, name, fpos, 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
|
|
TimeZoneGenericNames::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
|
|
TimeZoneGenericNames::findBestMatch(const UnicodeString& text, int32_t start, uint32_t types,
|
|
UnicodeString& tzID, UTimeZoneTimeType& timeType, UErrorCode& status) const {
|
|
timeType = UTZFMT_TIME_TYPE_UNKNOWN;
|
|
tzID.setToBogus();
|
|
|
|
if (U_FAILURE(status)) {
|
|
return 0;
|
|
}
|
|
|
|
// Find matches in the TimeZoneNames first
|
|
TimeZoneNameMatchInfo *tznamesMatches = findTimeZoneNames(text, start, types, status);
|
|
if (U_FAILURE(status)) {
|
|
return 0;
|
|
}
|
|
|
|
int32_t bestMatchLen = 0;
|
|
UTimeZoneTimeType bestMatchTimeType = UTZFMT_TIME_TYPE_UNKNOWN;
|
|
UnicodeString bestMatchTzID;
|
|
UBool isLongStandard = FALSE; // workaround - see the comments below
|
|
|
|
if (tznamesMatches != NULL) {
|
|
UnicodeString mzID;
|
|
for (int32_t i = 0; i < tznamesMatches->size(); i++) {
|
|
int32_t len = tznamesMatches->getMatchLength(i);
|
|
if (len > bestMatchLen) {
|
|
bestMatchLen = len;
|
|
tznamesMatches->getTimeZoneID(i, bestMatchTzID);
|
|
if (bestMatchTzID.isEmpty()) {
|
|
// name for a meta zone
|
|
tznamesMatches->getMetaZoneID(i, mzID);
|
|
U_ASSERT(mzID.length() > 0);
|
|
fTimeZoneNames->getReferenceZoneID(mzID, fTargetRegion, bestMatchTzID);
|
|
}
|
|
UTimeZoneNameType nameType = tznamesMatches->getNameType(i);
|
|
switch (nameType) {
|
|
case UTZNM_LONG_STANDARD:
|
|
isLongStandard = TRUE;
|
|
case UTZNM_SHORT_STANDARD_COMMONLY_USED:
|
|
case UTZNM_SHORT_STANDARD: // this one is never used for generic, but just in case
|
|
bestMatchTimeType = UTZFMT_TIME_TYPE_STANDARD;
|
|
break;
|
|
case UTZNM_LONG_DAYLIGHT:
|
|
case UTZNM_SHORT_DAYLIGHT_COMMONLY_USED:
|
|
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 (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;
|
|
}
|
|
}
|
|
}
|
|
|
|
// 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*
|
|
TimeZoneGenericNames::findLocal(const UnicodeString& text, int32_t start, uint32_t types, UErrorCode& status) const {
|
|
GNameSearchHandler handler(types);
|
|
|
|
TimeZoneGenericNames *nonConstThis = const_cast<TimeZoneGenericNames *>(this);
|
|
|
|
umtx_lock(&nonConstThis->fLock);
|
|
{
|
|
fGNamesTrie.search(text, start, (TextTrieMapSearchResultHandler *)&handler, status);
|
|
}
|
|
umtx_unlock(&nonConstThis->fLock);
|
|
|
|
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(&nonConstThis->fLock);
|
|
{
|
|
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(&nonConstThis->fLock);
|
|
|
|
if (U_FAILURE(status)) {
|
|
return NULL;
|
|
}
|
|
|
|
umtx_lock(&nonConstThis->fLock);
|
|
{
|
|
// now try it again
|
|
fGNamesTrie.search(text, start, (TextTrieMapSearchResultHandler *)&handler, status);
|
|
}
|
|
umtx_unlock(&nonConstThis->fLock);
|
|
|
|
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;
|
|
}
|
|
|
|
TimeZoneNameMatchInfo*
|
|
TimeZoneGenericNames::findTimeZoneNames(const UnicodeString& text, int32_t start, uint32_t types, UErrorCode& status) const {
|
|
TimeZoneNameMatchInfo *matchInfo = NULL;
|
|
|
|
// 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_COMMONLY_USED);
|
|
}
|
|
|
|
if (types) {
|
|
// Find matches in the TimeZoneNames
|
|
matchInfo = fTimeZoneNames->find(text, start, nameTypes, status);
|
|
}
|
|
|
|
return matchInfo;
|
|
}
|
|
|
|
U_NAMESPACE_END
|
|
#endif
|