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* Copyright (C) 2007-2010, International Business Machines Corporation and    *
* others. All Rights Reserved.                                                *
#ifndef ZONEMETA_H
#define ZONEMETA_H

#include "unicode/utypes.h"


#include "unicode/unistr.h"
#include "hash.h"


typedef struct OlsonToMetaMappingEntry {
    const UChar *mzid; // const because it's a reference to a resource bundle string.
    UDate from;
    UDate to;
} OlsonToMetaMappingEntry;

class UVector;

class U_I18N_API ZoneMeta {
     * Return the canonical id for this system tzid, which might be the id itself.
     * If the given system tzid is not know, U_ILLEGAL_ARGUMENT_ERROR is set in the status.
    static UnicodeString& U_EXPORT2 getCanonicalSystemID(const UnicodeString &tzid, UnicodeString &systemID, UErrorCode& status);

     * Return the canonical country code for this tzid.  If we have none, or if the time zone
     * is not associated with a country, return null.
    static UnicodeString& U_EXPORT2 getCanonicalCountry(const UnicodeString &tzid, UnicodeString &canonicalCountry);

     * Return the country code if this is a 'single' time zone that can fallback to just
     * the country, otherwise return empty string.  (Note, one must also check the locale data
     * to see that there is a localization for the country in order to implement
     * tr#35 appendix J step 5.)
    static UnicodeString& U_EXPORT2 getSingleCountry(const UnicodeString &tzid, UnicodeString &country);

     * Returns a CLDR metazone ID for the given Olson tzid and time.
    static UnicodeString& U_EXPORT2 getMetazoneID(const UnicodeString &tzid, UDate date, UnicodeString &result);
     * Returns an Olson ID for the ginve metazone and region
    static UnicodeString& U_EXPORT2 getZoneIdByMetazone(const UnicodeString &mzid, const UnicodeString &region, UnicodeString &result);

    static const UVector* U_EXPORT2 getMetazoneMappings(const UnicodeString &tzid);

    ZoneMeta(); // Prevent construction.
    static UVector* createMetazoneMappings(const UnicodeString &tzid);


#endif /* #if !UCONFIG_NO_FORMATTING */
#endif // ZONEMETA_H

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