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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo
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Roy Tam
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262
intl/icu/source/i18n/tznames_impl.h
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262
intl/icu/source/i18n/tznames_impl.h
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// Copyright (C) 2016 and later: Unicode, Inc. and others.
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// License & terms of use: http://www.unicode.org/copyright.html
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/*
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*******************************************************************************
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* Copyright (C) 2011-2016, 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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#ifndef __TZNAMES_IMPL_H__
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#define __TZNAMES_IMPL_H__
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/**
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* \file
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* \brief C++ API: TimeZoneNames object
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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 "unicode/tznames.h"
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#include "unicode/ures.h"
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#include "unicode/locid.h"
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#include "uhash.h"
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#include "uvector.h"
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#include "umutex.h"
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U_NAMESPACE_BEGIN
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/*
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* ZNStringPool Pool of (UChar *) strings. Provides for sharing of repeated
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* zone strings.
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*/
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struct ZNStringPoolChunk;
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class U_I18N_API ZNStringPool: public UMemory {
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public:
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ZNStringPool(UErrorCode &status);
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~ZNStringPool();
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/* Get the pooled string that is equal to the supplied string s.
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* Copy the string into the pool if it is not already present.
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*
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* Life time of the returned string is that of the pool.
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*/
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const UChar *get(const UChar *s, UErrorCode &status);
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/* Get the pooled string that is equal to the supplied string s.
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* Copy the string into the pool if it is not already present.
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*/
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const UChar *get(const UnicodeString &s, UErrorCode &status);
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/* Adopt a string into the pool, without copying it.
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* Used for strings from resource bundles, which will persist without copying.
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*/
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const UChar *adopt(const UChar *s, UErrorCode &status);
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/* Freeze the string pool. Discards the hash table that is used
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* for looking up a string. All pointers to pooled strings remain valid.
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*/
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void freeze();
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private:
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ZNStringPoolChunk *fChunks;
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UHashtable *fHash;
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};
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/*
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* Character node used by TextTrieMap
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*/
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struct CharacterNode {
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// No constructor or destructor.
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// We malloc and free an uninitalized array of CharacterNode objects
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// and clear and delete them ourselves.
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void clear();
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void deleteValues(UObjectDeleter *valueDeleter);
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void addValue(void *value, UObjectDeleter *valueDeleter, UErrorCode &status);
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inline UBool hasValues() const;
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inline int32_t countValues() const;
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inline const void *getValue(int32_t index) const;
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void *fValues; // Union of one single value vs. UVector of values.
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UChar fCharacter; // UTF-16 code unit.
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uint16_t fFirstChild; // 0 if no children.
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uint16_t fNextSibling; // 0 terminates the list.
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UBool fHasValuesVector;
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UBool fPadding;
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// No value: fValues == NULL and fHasValuesVector == FALSE
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// One value: fValues == value and fHasValuesVector == FALSE
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// >=2 values: fValues == UVector of values and fHasValuesVector == TRUE
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};
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inline UBool CharacterNode::hasValues() const {
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return (UBool)(fValues != NULL);
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}
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inline int32_t CharacterNode::countValues() const {
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return
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fValues == NULL ? 0 :
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!fHasValuesVector ? 1 :
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((const UVector *)fValues)->size();
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}
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inline const void *CharacterNode::getValue(int32_t index) const {
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if (!fHasValuesVector) {
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return fValues; // Assume index == 0.
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} else {
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return ((const UVector *)fValues)->elementAt(index);
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}
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}
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/*
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* Search result handler callback interface used by TextTrieMap search.
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*/
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class TextTrieMapSearchResultHandler : public UMemory {
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public:
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virtual UBool handleMatch(int32_t matchLength,
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const CharacterNode *node, UErrorCode& status) = 0;
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virtual ~TextTrieMapSearchResultHandler(); //added to avoid warning
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};
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/**
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* TextTrieMap is a trie implementation for supporting
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* fast prefix match for the string key.
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*/
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class U_I18N_API TextTrieMap : public UMemory {
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public:
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TextTrieMap(UBool ignoreCase, UObjectDeleter *valeDeleter);
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virtual ~TextTrieMap();
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void put(const UnicodeString &key, void *value, ZNStringPool &sp, UErrorCode &status);
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void put(const UChar*, void *value, UErrorCode &status);
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void search(const UnicodeString &text, int32_t start,
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TextTrieMapSearchResultHandler *handler, UErrorCode& status) const;
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int32_t isEmpty() const;
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private:
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UBool fIgnoreCase;
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CharacterNode *fNodes;
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int32_t fNodesCapacity;
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int32_t fNodesCount;
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UVector *fLazyContents;
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UBool fIsEmpty;
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UObjectDeleter *fValueDeleter;
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UBool growNodes();
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CharacterNode* addChildNode(CharacterNode *parent, UChar c, UErrorCode &status);
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CharacterNode* getChildNode(CharacterNode *parent, UChar c) const;
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void putImpl(const UnicodeString &key, void *value, UErrorCode &status);
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void buildTrie(UErrorCode &status);
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void search(CharacterNode *node, const UnicodeString &text, int32_t start,
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int32_t index, TextTrieMapSearchResultHandler *handler, UErrorCode &status) const;
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};
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class ZNames;
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class TextTrieMap;
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class ZNameSearchHandler;
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class TimeZoneNamesImpl : public TimeZoneNames {
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public:
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TimeZoneNamesImpl(const Locale& locale, UErrorCode& status);
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virtual ~TimeZoneNamesImpl();
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virtual UBool operator==(const TimeZoneNames& other) const;
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virtual TimeZoneNames* clone() const;
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StringEnumeration* getAvailableMetaZoneIDs(UErrorCode& status) const;
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StringEnumeration* getAvailableMetaZoneIDs(const UnicodeString& tzID, UErrorCode& status) const;
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UnicodeString& getMetaZoneID(const UnicodeString& tzID, UDate date, UnicodeString& mzID) const;
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UnicodeString& getReferenceZoneID(const UnicodeString& mzID, const char* region, UnicodeString& tzID) const;
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UnicodeString& getMetaZoneDisplayName(const UnicodeString& mzID, UTimeZoneNameType type, UnicodeString& name) const;
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UnicodeString& getTimeZoneDisplayName(const UnicodeString& tzID, UTimeZoneNameType type, UnicodeString& name) const;
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UnicodeString& getExemplarLocationName(const UnicodeString& tzID, UnicodeString& name) const;
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TimeZoneNames::MatchInfoCollection* find(const UnicodeString& text, int32_t start, uint32_t types, UErrorCode& status) const;
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void loadAllDisplayNames(UErrorCode& status);
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void getDisplayNames(const UnicodeString& tzID, const UTimeZoneNameType types[], int32_t numTypes, UDate date, UnicodeString dest[], UErrorCode& status) const;
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static UnicodeString& getDefaultExemplarLocationName(const UnicodeString& tzID, UnicodeString& name);
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static StringEnumeration* _getAvailableMetaZoneIDs(UErrorCode& status);
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static StringEnumeration* _getAvailableMetaZoneIDs(const UnicodeString& tzID, UErrorCode& status);
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static UnicodeString& _getMetaZoneID(const UnicodeString& tzID, UDate date, UnicodeString& mzID);
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static UnicodeString& _getReferenceZoneID(const UnicodeString& mzID, const char* region, UnicodeString& tzID);
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private:
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Locale fLocale;
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UResourceBundle* fZoneStrings;
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UHashtable* fTZNamesMap;
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UHashtable* fMZNamesMap;
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UBool fNamesTrieFullyLoaded;
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UBool fNamesFullyLoaded;
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TextTrieMap fNamesTrie;
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void initialize(const Locale& locale, UErrorCode& status);
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void cleanup();
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void loadStrings(const UnicodeString& tzCanonicalID, UErrorCode& status);
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ZNames* loadMetaZoneNames(const UnicodeString& mzId, UErrorCode& status);
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ZNames* loadTimeZoneNames(const UnicodeString& mzId, UErrorCode& status);
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TimeZoneNames::MatchInfoCollection* doFind(ZNameSearchHandler& handler,
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const UnicodeString& text, int32_t start, UErrorCode& status) const;
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void addAllNamesIntoTrie(UErrorCode& errorCode);
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void internalLoadAllDisplayNames(UErrorCode& status);
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struct ZoneStringsLoader;
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};
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class TZDBNames;
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class TZDBTimeZoneNames : public TimeZoneNames {
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public:
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TZDBTimeZoneNames(const Locale& locale);
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virtual ~TZDBTimeZoneNames();
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virtual UBool operator==(const TimeZoneNames& other) const;
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virtual TimeZoneNames* clone() const;
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StringEnumeration* getAvailableMetaZoneIDs(UErrorCode& status) const;
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StringEnumeration* getAvailableMetaZoneIDs(const UnicodeString& tzID, UErrorCode& status) const;
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UnicodeString& getMetaZoneID(const UnicodeString& tzID, UDate date, UnicodeString& mzID) const;
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UnicodeString& getReferenceZoneID(const UnicodeString& mzID, const char* region, UnicodeString& tzID) const;
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UnicodeString& getMetaZoneDisplayName(const UnicodeString& mzID, UTimeZoneNameType type, UnicodeString& name) const;
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UnicodeString& getTimeZoneDisplayName(const UnicodeString& tzID, UTimeZoneNameType type, UnicodeString& name) const;
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TimeZoneNames::MatchInfoCollection* find(const UnicodeString& text, int32_t start, uint32_t types, UErrorCode& status) const;
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static const TZDBNames* getMetaZoneNames(const UnicodeString& mzId, UErrorCode& status);
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private:
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Locale fLocale;
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char fRegion[ULOC_COUNTRY_CAPACITY];
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};
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U_NAMESPACE_END
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#endif /* #if !UCONFIG_NO_FORMATTING */
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#endif // __TZNAMES_IMPL_H__
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//eof
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//
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