8000983: Support narrow display names for calendar fields
8003267: Support generic time zone names in TimeZoneNameProvider (SPI)
Reviewed-by: naoto
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package sun.util.locale.provider;
import java.util.LinkedHashSet;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import java.util.TimeZone;
import java.util.spi.TimeZoneNameProvider;
import sun.util.calendar.ZoneInfo;
import sun.util.resources.TimeZoneNamesBundle;
/**
* Concrete implementation of the
* {@link java.util.spi.TimeZoneNameProvider TimeZoneNameProvider} class
* for the JRE LocaleProviderAdapter.
*
* @author Naoto Sato
* @author Masayoshi Okutsu
*/
public class TimeZoneNameProviderImpl extends TimeZoneNameProvider {
private final LocaleProviderAdapter.Type type;
private final Set<String> langtags;
TimeZoneNameProviderImpl(LocaleProviderAdapter.Type type, Set<String> langtags) {
this.type = type;
this.langtags = langtags;
}
/**
* Returns an array of all locales for which this locale service provider
* can provide localized objects or names.
*
* @return An array of all locales for which this locale service provider
* can provide localized objects or names.
*/
@Override
public Locale[] getAvailableLocales() {
return LocaleProviderAdapter.toLocaleArray(langtags);
}
@Override
public boolean isSupportedLocale(Locale locale) {
return LocaleProviderAdapter.isSupportedLocale(locale, type, langtags);
}
/**
* Returns a name for the given time zone ID that's suitable for
* presentation to the user in the specified locale. The given time
* zone ID is "GMT" or one of the names defined using "Zone" entries
* in the "tz database", a public domain time zone database at
* <a href="ftp://elsie.nci.nih.gov/pub/">ftp://elsie.nci.nih.gov/pub/</a>.
* The data of this database is contained in a file whose name starts with
* "tzdata", and the specification of the data format is part of the zic.8
* man page, which is contained in a file whose name starts with "tzcode".
* <p>
* If <code>daylight</code> is true, the method should return a name
* appropriate for daylight saving time even if the specified time zone
* has not observed daylight saving time in the past.
*
* @param ID a time zone ID string
* @param daylight if true, return the daylight saving name.
* @param style either {@link java.util.TimeZone#LONG TimeZone.LONG} or
* {@link java.util.TimeZone#SHORT TimeZone.SHORT}
* @param locale the desired locale
* @return the human-readable name of the given time zone in the
* given locale, or null if it's not available.
* @exception IllegalArgumentException if <code>style</code> is invalid,
* or <code>locale</code> isn't one of the locales returned from
* {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()
* getAvailableLocales()}.
* @exception NullPointerException if <code>ID</code> or <code>locale</code>
* is null
* @see java.util.TimeZone#getDisplayName(boolean, int, java.util.Locale)
*/
@Override
public String getDisplayName(String id, boolean daylight, int style, Locale locale) {
String[] names = getDisplayNameArray(id, 5, locale);
if (names != null) {
int index = daylight ? 3 : 1;
if (style == TimeZone.SHORT) {
index++;
}
return names[index];
}
return null;
}
@Override
public String getGenericDisplayName(String id, int style, Locale locale) {
String[] names = getDisplayNameArray(id, 7, locale);
if (names != null && names.length >= 7) {
return names[(style == TimeZone.LONG) ? 5 : 6];
}
return null;
}
private String[] getDisplayNameArray(String id, int n, Locale locale) {
if (id == null || locale == null) {
throw new NullPointerException();
}
LocaleProviderAdapter adapter = LocaleProviderAdapter.forType(type);
TimeZoneNamesBundle rb = adapter.getLocaleResources(locale).getTimeZoneNames();
return rb.containsKey(id) ? rb.getStringArray(id, n) : null;
}
/**
* Returns a String[][] as the DateFormatSymbols.getZoneStrings() value for
* the given locale. This method is package private.
*
* @param locale a Locale for time zone names
* @return an array of time zone names arrays
*/
String[][] getZoneStrings(Locale locale) {
LocaleProviderAdapter adapter = LocaleProviderAdapter.forType(type);
TimeZoneNamesBundle rb = adapter.getLocaleResources(locale).getTimeZoneNames();
Set<String> keyset = rb.keySet();
// Use a LinkedHashSet to preseve the order
Set<String[]> value = new LinkedHashSet<>();
for (String key : keyset) {
value.add(rb.getStringArray(key));
}
// Add aliases data for CLDR
if (type == LocaleProviderAdapter.Type.CLDR) {
// Note: TimeZoneNamesBundle creates a String[] on each getStringArray call.
Map<String, String> aliases = ZoneInfo.getAliasTable();
for (String alias : aliases.keySet()) {
if (!keyset.contains(alias)) {
String tzid = aliases.get(alias);
if (keyset.contains(tzid)) {
String[] val = rb.getStringArray(tzid);
val[0] = alias;
value.add(val);
}
}
}
}
return value.toArray(new String[0][]);
}
}