src/java.base/share/classes/sun/util/locale/provider/CalendarDataProviderImpl.java
author naoto
Tue, 12 Dec 2017 10:21:58 -0800
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8176841: Additional Unicode Language-Tag Extensions 8189134: New system properties for the default Locale extensions 8190918: Retrieve the region specific data regardless of language in locale 8191349: Add a new method in j.t.f.DateTimeFormatter to reflect Unicode extensions Reviewed-by: scolebourne, lancea, rriggs, rgoel, nishjain
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/*
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 * Copyright (c) 2012, 2017, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.  Oracle designates this
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 * particular file as subject to the "Classpath" exception as provided
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 * by Oracle in the LICENSE file that accompanied this code.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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package sun.util.locale.provider;
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import java.util.Locale;
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import java.util.Set;
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import java.util.spi.CalendarDataProvider;
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/**
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 * Concrete implementation of the  {@link java.util.spi.CalendarDataProvider
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 * CalendarDataProvider} class for the JRE LocaleProviderAdapter.
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 *
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 * @author Masayoshi Okutsu
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 * @author Naoto Sato
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 */
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public class CalendarDataProviderImpl extends CalendarDataProvider implements AvailableLanguageTags {
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    private final LocaleProviderAdapter.Type type;
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    private final Set<String> langtags;
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    public CalendarDataProviderImpl(LocaleProviderAdapter.Type type, Set<String> langtags) {
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        this.type = type;
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        this.langtags = langtags;
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    }
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    @Override
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    public int getFirstDayOfWeek(Locale locale) {
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        String fw = LocaleProviderAdapter.forType(type).getLocaleResources(locale)
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                   .getCalendarData(CalendarDataUtility.FIRST_DAY_OF_WEEK);
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        return convertToCalendarData(fw);
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    }
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    @Override
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    public int getMinimalDaysInFirstWeek(Locale locale) {
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        String md = LocaleProviderAdapter.forType(type).getLocaleResources(locale)
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                   .getCalendarData(CalendarDataUtility.MINIMAL_DAYS_IN_FIRST_WEEK);
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        return convertToCalendarData(md);
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    }
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    @Override
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    public Locale[] getAvailableLocales() {
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        return LocaleProviderAdapter.toLocaleArray(langtags);
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    }
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    @Override
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    public Set<String> getAvailableLanguageTags() {
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        return langtags;
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    }
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    private int convertToCalendarData(String src) {
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        int val = Integer.parseInt(src);
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        return (src.isEmpty() || val <= 0 || val > 7) ? 0 : val;
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    }
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}