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877 lines
33 KiB
877 lines
33 KiB
/*
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* Copyright (c) 1996, 2016, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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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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*
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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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*
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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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* (C) Copyright Taligent, Inc. 1996 - All Rights Reserved
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* (C) Copyright IBM Corp. 1996 - All Rights Reserved
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*
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* The original version of this source code and documentation is copyrighted
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* and owned by Taligent, Inc., a wholly-owned subsidiary of IBM. These
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* materials are provided under terms of a License Agreement between Taligent
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* and Sun. This technology is protected by multiple US and International
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* patents. This notice and attribution to Taligent may not be removed.
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* Taligent is a registered trademark of Taligent, Inc.
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*
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*/
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package java.text;
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import java.io.IOException;
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import java.io.ObjectOutputStream;
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import java.io.Serializable;
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import java.lang.ref.SoftReference;
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import java.text.spi.DateFormatSymbolsProvider;
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import java.util.Arrays;
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import java.util.Locale;
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import java.util.Objects;
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import java.util.ResourceBundle;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.ConcurrentMap;
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import sun.util.locale.provider.LocaleProviderAdapter;
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import sun.util.locale.provider.LocaleServiceProviderPool;
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import sun.util.locale.provider.ResourceBundleBasedAdapter;
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import sun.util.locale.provider.TimeZoneNameUtility;
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/**
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* <code>DateFormatSymbols</code> is a public class for encapsulating
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* localizable date-time formatting data, such as the names of the
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* months, the names of the days of the week, and the time zone data.
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* <code>SimpleDateFormat</code> uses
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* <code>DateFormatSymbols</code> to encapsulate this information.
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*
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* <p>
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* Typically you shouldn't use <code>DateFormatSymbols</code> directly.
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* Rather, you are encouraged to create a date-time formatter with the
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* <code>DateFormat</code> class's factory methods: <code>getTimeInstance</code>,
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* <code>getDateInstance</code>, or <code>getDateTimeInstance</code>.
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* These methods automatically create a <code>DateFormatSymbols</code> for
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* the formatter so that you don't have to. After the
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* formatter is created, you may modify its format pattern using the
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* <code>setPattern</code> method. For more information about
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* creating formatters using <code>DateFormat</code>'s factory methods,
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* see {@link DateFormat}.
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*
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* <p>
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* If you decide to create a date-time formatter with a specific
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* format pattern for a specific locale, you can do so with:
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* <blockquote>
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* <pre>
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* new SimpleDateFormat(aPattern, DateFormatSymbols.getInstance(aLocale)).
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* </pre>
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* </blockquote>
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*
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* <p>
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* <code>DateFormatSymbols</code> objects are cloneable. When you obtain
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* a <code>DateFormatSymbols</code> object, feel free to modify the
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* date-time formatting data. For instance, you can replace the localized
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* date-time format pattern characters with the ones that you feel easy
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* to remember. Or you can change the representative cities
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* to your favorite ones.
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*
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* <p>
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* New <code>DateFormatSymbols</code> subclasses may be added to support
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* <code>SimpleDateFormat</code> for date-time formatting for additional locales.
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* @see DateFormat
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* @see SimpleDateFormat
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* @see java.util.SimpleTimeZone
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* @author Chen-Lieh Huang
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*/
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public class DateFormatSymbols implements Serializable, Cloneable {
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/**
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* Construct a DateFormatSymbols object by loading format data from
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* resources for the default {@link java.util.Locale.Category#FORMAT FORMAT}
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* locale. This constructor can only
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* construct instances for the locales supported by the Java
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* runtime environment, not for those supported by installed
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* {@link java.text.spi.DateFormatSymbolsProvider DateFormatSymbolsProvider}
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* implementations. For full locale coverage, use the
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* {@link #getInstance(Locale) getInstance} method.
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* <p>This is equivalent to calling
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* {@link #DateFormatSymbols(Locale)
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* DateFormatSymbols(Locale.getDefault(Locale.Category.FORMAT))}.
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* @see #getInstance()
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* @see java.util.Locale#getDefault(java.util.Locale.Category)
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* @see java.util.Locale.Category#FORMAT
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* @exception java.util.MissingResourceException
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* if the resources for the default locale cannot be
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* found or cannot be loaded.
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*/
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public DateFormatSymbols()
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{
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initializeData(Locale.getDefault(Locale.Category.FORMAT));
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}
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/**
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* Construct a DateFormatSymbols object by loading format data from
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* resources for the given locale. This constructor can only
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* construct instances for the locales supported by the Java
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* runtime environment, not for those supported by installed
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* {@link java.text.spi.DateFormatSymbolsProvider DateFormatSymbolsProvider}
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* implementations. For full locale coverage, use the
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* {@link #getInstance(Locale) getInstance} method.
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*
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* @param locale the desired locale
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* @see #getInstance(Locale)
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* @exception java.util.MissingResourceException
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* if the resources for the specified locale cannot be
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* found or cannot be loaded.
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*/
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public DateFormatSymbols(Locale locale)
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{
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initializeData(locale);
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}
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/**
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* Constructs an uninitialized DateFormatSymbols.
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*/
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private DateFormatSymbols(boolean flag) {
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}
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/**
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* Era strings. For example: "AD" and "BC". An array of 2 strings,
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* indexed by <code>Calendar.BC</code> and <code>Calendar.AD</code>.
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* @serial
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*/
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String eras[] = null;
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/**
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* Month strings. For example: "January", "February", etc. An array
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* of 13 strings (some calendars have 13 months), indexed by
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* <code>Calendar.JANUARY</code>, <code>Calendar.FEBRUARY</code>, etc.
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* @serial
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*/
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String months[] = null;
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/**
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* Short month strings. For example: "Jan", "Feb", etc. An array of
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* 13 strings (some calendars have 13 months), indexed by
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* <code>Calendar.JANUARY</code>, <code>Calendar.FEBRUARY</code>, etc.
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* @serial
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*/
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String shortMonths[] = null;
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/**
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* Weekday strings. For example: "Sunday", "Monday", etc. An array
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* of 8 strings, indexed by <code>Calendar.SUNDAY</code>,
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* <code>Calendar.MONDAY</code>, etc.
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* The element <code>weekdays[0]</code> is ignored.
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* @serial
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*/
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String weekdays[] = null;
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/**
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* Short weekday strings. For example: "Sun", "Mon", etc. An array
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* of 8 strings, indexed by <code>Calendar.SUNDAY</code>,
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* <code>Calendar.MONDAY</code>, etc.
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* The element <code>shortWeekdays[0]</code> is ignored.
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* @serial
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*/
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String shortWeekdays[] = null;
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/**
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* AM and PM strings. For example: "AM" and "PM". An array of
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* 2 strings, indexed by <code>Calendar.AM</code> and
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* <code>Calendar.PM</code>.
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* @serial
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*/
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String ampms[] = null;
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/**
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* Localized names of time zones in this locale. This is a
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* two-dimensional array of strings of size <em>n</em> by <em>m</em>,
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* where <em>m</em> is at least 5. Each of the <em>n</em> rows is an
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* entry containing the localized names for a single <code>TimeZone</code>.
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* Each such row contains (with <code>i</code> ranging from
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* 0..<em>n</em>-1):
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* <ul>
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* <li><code>zoneStrings[i][0]</code> - time zone ID</li>
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* <li><code>zoneStrings[i][1]</code> - long name of zone in standard
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* time</li>
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* <li><code>zoneStrings[i][2]</code> - short name of zone in
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* standard time</li>
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* <li><code>zoneStrings[i][3]</code> - long name of zone in daylight
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* saving time</li>
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* <li><code>zoneStrings[i][4]</code> - short name of zone in daylight
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* saving time</li>
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* </ul>
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* The zone ID is <em>not</em> localized; it's one of the valid IDs of
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* the {@link java.util.TimeZone TimeZone} class that are not
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* <a href="../java/util/TimeZone.html#CustomID">custom IDs</a>.
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* All other entries are localized names.
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* @see java.util.TimeZone
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* @serial
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*/
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String zoneStrings[][] = null;
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/**
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* Indicates that zoneStrings is set externally with setZoneStrings() method.
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*/
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transient boolean isZoneStringsSet = false;
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/**
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* Unlocalized date-time pattern characters. For example: 'y', 'd', etc.
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* All locales use the same these unlocalized pattern characters.
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*/
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static final String patternChars = "GyMdkHmsSEDFwWahKzZYuXL";
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static final int PATTERN_ERA = 0; // G
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static final int PATTERN_YEAR = 1; // y
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static final int PATTERN_MONTH = 2; // M
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static final int PATTERN_DAY_OF_MONTH = 3; // d
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static final int PATTERN_HOUR_OF_DAY1 = 4; // k
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static final int PATTERN_HOUR_OF_DAY0 = 5; // H
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static final int PATTERN_MINUTE = 6; // m
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static final int PATTERN_SECOND = 7; // s
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static final int PATTERN_MILLISECOND = 8; // S
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static final int PATTERN_DAY_OF_WEEK = 9; // E
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static final int PATTERN_DAY_OF_YEAR = 10; // D
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static final int PATTERN_DAY_OF_WEEK_IN_MONTH = 11; // F
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static final int PATTERN_WEEK_OF_YEAR = 12; // w
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static final int PATTERN_WEEK_OF_MONTH = 13; // W
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static final int PATTERN_AM_PM = 14; // a
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static final int PATTERN_HOUR1 = 15; // h
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static final int PATTERN_HOUR0 = 16; // K
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static final int PATTERN_ZONE_NAME = 17; // z
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static final int PATTERN_ZONE_VALUE = 18; // Z
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static final int PATTERN_WEEK_YEAR = 19; // Y
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static final int PATTERN_ISO_DAY_OF_WEEK = 20; // u
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static final int PATTERN_ISO_ZONE = 21; // X
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static final int PATTERN_MONTH_STANDALONE = 22; // L
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/**
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* Localized date-time pattern characters. For example, a locale may
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* wish to use 'u' rather than 'y' to represent years in its date format
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* pattern strings.
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* This string must be exactly 18 characters long, with the index of
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* the characters described by <code>DateFormat.ERA_FIELD</code>,
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* <code>DateFormat.YEAR_FIELD</code>, etc. Thus, if the string were
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* "Xz...", then localized patterns would use 'X' for era and 'z' for year.
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* @serial
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*/
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String localPatternChars = null;
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/**
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* The locale which is used for initializing this DateFormatSymbols object.
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*
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* @since 1.6
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* @serial
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*/
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Locale locale = null;
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/* use serialVersionUID from JDK 1.1.4 for interoperability */
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static final long serialVersionUID = -5987973545549424702L;
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/**
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* Returns an array of all locales for which the
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* <code>getInstance</code> methods of this class can return
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* localized instances.
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* The returned array represents the union of locales supported by the
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* Java runtime and by installed
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* {@link java.text.spi.DateFormatSymbolsProvider DateFormatSymbolsProvider}
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* implementations. It must contain at least a <code>Locale</code>
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* instance equal to {@link java.util.Locale#US Locale.US}.
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*
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* @return An array of locales for which localized
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* <code>DateFormatSymbols</code> instances are available.
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* @since 1.6
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*/
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public static Locale[] getAvailableLocales() {
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LocaleServiceProviderPool pool=
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LocaleServiceProviderPool.getPool(DateFormatSymbolsProvider.class);
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return pool.getAvailableLocales();
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}
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/**
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* Gets the <code>DateFormatSymbols</code> instance for the default
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* locale. This method provides access to <code>DateFormatSymbols</code>
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* instances for locales supported by the Java runtime itself as well
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* as for those supported by installed
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* {@link java.text.spi.DateFormatSymbolsProvider DateFormatSymbolsProvider}
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* implementations.
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* <p>This is equivalent to calling {@link #getInstance(Locale)
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* getInstance(Locale.getDefault(Locale.Category.FORMAT))}.
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* @see java.util.Locale#getDefault(java.util.Locale.Category)
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* @see java.util.Locale.Category#FORMAT
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* @return a <code>DateFormatSymbols</code> instance.
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* @since 1.6
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*/
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public static final DateFormatSymbols getInstance() {
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return getInstance(Locale.getDefault(Locale.Category.FORMAT));
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}
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/**
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* Gets the <code>DateFormatSymbols</code> instance for the specified
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* locale. This method provides access to <code>DateFormatSymbols</code>
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* instances for locales supported by the Java runtime itself as well
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* as for those supported by installed
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* {@link java.text.spi.DateFormatSymbolsProvider DateFormatSymbolsProvider}
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* implementations.
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* @param locale the given locale.
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* @return a <code>DateFormatSymbols</code> instance.
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* @exception NullPointerException if <code>locale</code> is null
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* @since 1.6
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*/
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public static final DateFormatSymbols getInstance(Locale locale) {
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DateFormatSymbols dfs = getProviderInstance(locale);
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if (dfs != null) {
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return dfs;
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}
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throw new RuntimeException("DateFormatSymbols instance creation failed.");
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}
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/**
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* Returns a DateFormatSymbols provided by a provider or found in
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* the cache. Note that this method returns a cached instance,
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* not its clone. Therefore, the instance should never be given to
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* an application.
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*/
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static final DateFormatSymbols getInstanceRef(Locale locale) {
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DateFormatSymbols dfs = getProviderInstance(locale);
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if (dfs != null) {
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return dfs;
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}
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throw new RuntimeException("DateFormatSymbols instance creation failed.");
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}
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private static DateFormatSymbols getProviderInstance(Locale locale) {
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LocaleProviderAdapter adapter = LocaleProviderAdapter.getAdapter(DateFormatSymbolsProvider.class, locale);
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DateFormatSymbolsProvider provider = adapter.getDateFormatSymbolsProvider();
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DateFormatSymbols dfsyms = provider.getInstance(locale);
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if (dfsyms == null) {
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provider = LocaleProviderAdapter.forJRE().getDateFormatSymbolsProvider();
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dfsyms = provider.getInstance(locale);
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}
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return dfsyms;
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}
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/**
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* Gets era strings. For example: "AD" and "BC".
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* @return the era strings.
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*/
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public String[] getEras() {
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return Arrays.copyOf(eras, eras.length);
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}
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/**
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* Sets era strings. For example: "AD" and "BC".
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* @param newEras the new era strings.
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*/
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public void setEras(String[] newEras) {
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eras = Arrays.copyOf(newEras, newEras.length);
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cachedHashCode = 0;
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}
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/**
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* Gets month strings. For example: "January", "February", etc.
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*
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* <p>If the language requires different forms for formatting and
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* stand-alone usages, this method returns month names in the
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* formatting form. For example, the preferred month name for
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* January in the Czech language is <em>ledna</em> in the
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* formatting form, while it is <em>leden</em> in the stand-alone
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* form. This method returns {@code "ledna"} in this case. Refer
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* to the <a href="http://unicode.org/reports/tr35/#Calendar_Elements">
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* Calendar Elements in the Unicode Locale Data Markup Language
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* (LDML) specification</a> for more details.
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*
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* @return the month strings.
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*/
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public String[] getMonths() {
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return Arrays.copyOf(months, months.length);
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}
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/**
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* Sets month strings. For example: "January", "February", etc.
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* @param newMonths the new month strings.
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*/
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public void setMonths(String[] newMonths) {
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months = Arrays.copyOf(newMonths, newMonths.length);
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cachedHashCode = 0;
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}
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/**
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* Gets short month strings. For example: "Jan", "Feb", etc.
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*
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* <p>If the language requires different forms for formatting and
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* stand-alone usages, This method returns short month names in
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* the formatting form. For example, the preferred abbreviation
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* for January in the Catalan language is <em>de gen.</em> in the
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* formatting form, while it is <em>gen.</em> in the stand-alone
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* form. This method returns {@code "de gen."} in this case. Refer
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* to the <a href="http://unicode.org/reports/tr35/#Calendar_Elements">
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* Calendar Elements in the Unicode Locale Data Markup Language
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* (LDML) specification</a> for more details.
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*
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* @return the short month strings.
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*/
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public String[] getShortMonths() {
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return Arrays.copyOf(shortMonths, shortMonths.length);
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}
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/**
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* Sets short month strings. For example: "Jan", "Feb", etc.
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* @param newShortMonths the new short month strings.
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*/
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public void setShortMonths(String[] newShortMonths) {
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shortMonths = Arrays.copyOf(newShortMonths, newShortMonths.length);
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cachedHashCode = 0;
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}
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/**
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* Gets weekday strings. For example: "Sunday", "Monday", etc.
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* @return the weekday strings. Use <code>Calendar.SUNDAY</code>,
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* <code>Calendar.MONDAY</code>, etc. to index the result array.
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*/
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public String[] getWeekdays() {
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return Arrays.copyOf(weekdays, weekdays.length);
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}
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/**
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* Sets weekday strings. For example: "Sunday", "Monday", etc.
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* @param newWeekdays the new weekday strings. The array should
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* be indexed by <code>Calendar.SUNDAY</code>,
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* <code>Calendar.MONDAY</code>, etc.
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*/
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public void setWeekdays(String[] newWeekdays) {
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weekdays = Arrays.copyOf(newWeekdays, newWeekdays.length);
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cachedHashCode = 0;
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}
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/**
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* Gets short weekday strings. For example: "Sun", "Mon", etc.
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* @return the short weekday strings. Use <code>Calendar.SUNDAY</code>,
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* <code>Calendar.MONDAY</code>, etc. to index the result array.
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*/
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public String[] getShortWeekdays() {
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return Arrays.copyOf(shortWeekdays, shortWeekdays.length);
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}
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/**
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* Sets short weekday strings. For example: "Sun", "Mon", etc.
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* @param newShortWeekdays the new short weekday strings. The array should
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* be indexed by <code>Calendar.SUNDAY</code>,
|
|
* <code>Calendar.MONDAY</code>, etc.
|
|
*/
|
|
public void setShortWeekdays(String[] newShortWeekdays) {
|
|
shortWeekdays = Arrays.copyOf(newShortWeekdays, newShortWeekdays.length);
|
|
cachedHashCode = 0;
|
|
}
|
|
|
|
/**
|
|
* Gets ampm strings. For example: "AM" and "PM".
|
|
* @return the ampm strings.
|
|
*/
|
|
public String[] getAmPmStrings() {
|
|
return Arrays.copyOf(ampms, ampms.length);
|
|
}
|
|
|
|
/**
|
|
* Sets ampm strings. For example: "AM" and "PM".
|
|
* @param newAmpms the new ampm strings.
|
|
*/
|
|
public void setAmPmStrings(String[] newAmpms) {
|
|
ampms = Arrays.copyOf(newAmpms, newAmpms.length);
|
|
cachedHashCode = 0;
|
|
}
|
|
|
|
/**
|
|
* Gets time zone strings. Use of this method is discouraged; use
|
|
* {@link java.util.TimeZone#getDisplayName() TimeZone.getDisplayName()}
|
|
* instead.
|
|
* <p>
|
|
* The value returned is a
|
|
* two-dimensional array of strings of size <em>n</em> by <em>m</em>,
|
|
* where <em>m</em> is at least 5. Each of the <em>n</em> rows is an
|
|
* entry containing the localized names for a single <code>TimeZone</code>.
|
|
* Each such row contains (with <code>i</code> ranging from
|
|
* 0..<em>n</em>-1):
|
|
* <ul>
|
|
* <li><code>zoneStrings[i][0]</code> - time zone ID</li>
|
|
* <li><code>zoneStrings[i][1]</code> - long name of zone in standard
|
|
* time</li>
|
|
* <li><code>zoneStrings[i][2]</code> - short name of zone in
|
|
* standard time</li>
|
|
* <li><code>zoneStrings[i][3]</code> - long name of zone in daylight
|
|
* saving time</li>
|
|
* <li><code>zoneStrings[i][4]</code> - short name of zone in daylight
|
|
* saving time</li>
|
|
* </ul>
|
|
* The zone ID is <em>not</em> localized; it's one of the valid IDs of
|
|
* the {@link java.util.TimeZone TimeZone} class that are not
|
|
* <a href="../util/TimeZone.html#CustomID">custom IDs</a>.
|
|
* All other entries are localized names. If a zone does not implement
|
|
* daylight saving time, the daylight saving time names should not be used.
|
|
* <p>
|
|
* If {@link #setZoneStrings(String[][]) setZoneStrings} has been called
|
|
* on this <code>DateFormatSymbols</code> instance, then the strings
|
|
* provided by that call are returned. Otherwise, the returned array
|
|
* contains names provided by the Java runtime and by installed
|
|
* {@link java.util.spi.TimeZoneNameProvider TimeZoneNameProvider}
|
|
* implementations.
|
|
*
|
|
* @return the time zone strings.
|
|
* @see #setZoneStrings(String[][])
|
|
*/
|
|
public String[][] getZoneStrings() {
|
|
return getZoneStringsImpl(true);
|
|
}
|
|
|
|
/**
|
|
* Sets time zone strings. The argument must be a
|
|
* two-dimensional array of strings of size <em>n</em> by <em>m</em>,
|
|
* where <em>m</em> is at least 5. Each of the <em>n</em> rows is an
|
|
* entry containing the localized names for a single <code>TimeZone</code>.
|
|
* Each such row contains (with <code>i</code> ranging from
|
|
* 0..<em>n</em>-1):
|
|
* <ul>
|
|
* <li><code>zoneStrings[i][0]</code> - time zone ID</li>
|
|
* <li><code>zoneStrings[i][1]</code> - long name of zone in standard
|
|
* time</li>
|
|
* <li><code>zoneStrings[i][2]</code> - short name of zone in
|
|
* standard time</li>
|
|
* <li><code>zoneStrings[i][3]</code> - long name of zone in daylight
|
|
* saving time</li>
|
|
* <li><code>zoneStrings[i][4]</code> - short name of zone in daylight
|
|
* saving time</li>
|
|
* </ul>
|
|
* The zone ID is <em>not</em> localized; it's one of the valid IDs of
|
|
* the {@link java.util.TimeZone TimeZone} class that are not
|
|
* <a href="../util/TimeZone.html#CustomID">custom IDs</a>.
|
|
* All other entries are localized names.
|
|
*
|
|
* @param newZoneStrings the new time zone strings.
|
|
* @exception IllegalArgumentException if the length of any row in
|
|
* <code>newZoneStrings</code> is less than 5
|
|
* @exception NullPointerException if <code>newZoneStrings</code> is null
|
|
* @see #getZoneStrings()
|
|
*/
|
|
public void setZoneStrings(String[][] newZoneStrings) {
|
|
String[][] aCopy = new String[newZoneStrings.length][];
|
|
for (int i = 0; i < newZoneStrings.length; ++i) {
|
|
int len = newZoneStrings[i].length;
|
|
if (len < 5) {
|
|
throw new IllegalArgumentException();
|
|
}
|
|
aCopy[i] = Arrays.copyOf(newZoneStrings[i], len);
|
|
}
|
|
zoneStrings = aCopy;
|
|
isZoneStringsSet = true;
|
|
cachedHashCode = 0;
|
|
}
|
|
|
|
/**
|
|
* Gets localized date-time pattern characters. For example: 'u', 't', etc.
|
|
* @return the localized date-time pattern characters.
|
|
*/
|
|
public String getLocalPatternChars() {
|
|
return localPatternChars;
|
|
}
|
|
|
|
/**
|
|
* Sets localized date-time pattern characters. For example: 'u', 't', etc.
|
|
* @param newLocalPatternChars the new localized date-time
|
|
* pattern characters.
|
|
*/
|
|
public void setLocalPatternChars(String newLocalPatternChars) {
|
|
// Call toString() to throw an NPE in case the argument is null
|
|
localPatternChars = newLocalPatternChars.toString();
|
|
cachedHashCode = 0;
|
|
}
|
|
|
|
/**
|
|
* Overrides Cloneable
|
|
*/
|
|
public Object clone()
|
|
{
|
|
try
|
|
{
|
|
DateFormatSymbols other = (DateFormatSymbols)super.clone();
|
|
copyMembers(this, other);
|
|
return other;
|
|
} catch (CloneNotSupportedException e) {
|
|
throw new InternalError(e);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Override hashCode.
|
|
* Generates a hash code for the DateFormatSymbols object.
|
|
*/
|
|
@Override
|
|
public int hashCode() {
|
|
int hashCode = cachedHashCode;
|
|
if (hashCode == 0) {
|
|
hashCode = 5;
|
|
hashCode = 11 * hashCode + Arrays.hashCode(eras);
|
|
hashCode = 11 * hashCode + Arrays.hashCode(months);
|
|
hashCode = 11 * hashCode + Arrays.hashCode(shortMonths);
|
|
hashCode = 11 * hashCode + Arrays.hashCode(weekdays);
|
|
hashCode = 11 * hashCode + Arrays.hashCode(shortWeekdays);
|
|
hashCode = 11 * hashCode + Arrays.hashCode(ampms);
|
|
hashCode = 11 * hashCode + Arrays.deepHashCode(getZoneStringsWrapper());
|
|
hashCode = 11 * hashCode + Objects.hashCode(localPatternChars);
|
|
cachedHashCode = hashCode;
|
|
}
|
|
|
|
return hashCode;
|
|
}
|
|
|
|
/**
|
|
* Override equals
|
|
*/
|
|
public boolean equals(Object obj)
|
|
{
|
|
if (this == obj) return true;
|
|
if (obj == null || getClass() != obj.getClass()) return false;
|
|
DateFormatSymbols that = (DateFormatSymbols) obj;
|
|
return (Arrays.equals(eras, that.eras)
|
|
&& Arrays.equals(months, that.months)
|
|
&& Arrays.equals(shortMonths, that.shortMonths)
|
|
&& Arrays.equals(weekdays, that.weekdays)
|
|
&& Arrays.equals(shortWeekdays, that.shortWeekdays)
|
|
&& Arrays.equals(ampms, that.ampms)
|
|
&& Arrays.deepEquals(getZoneStringsWrapper(), that.getZoneStringsWrapper())
|
|
&& ((localPatternChars != null
|
|
&& localPatternChars.equals(that.localPatternChars))
|
|
|| (localPatternChars == null
|
|
&& that.localPatternChars == null)));
|
|
}
|
|
|
|
// =======================privates===============================
|
|
|
|
/**
|
|
* Useful constant for defining time zone offsets.
|
|
*/
|
|
static final int millisPerHour = 60*60*1000;
|
|
|
|
/**
|
|
* Cache to hold DateFormatSymbols instances per Locale.
|
|
*/
|
|
private static final ConcurrentMap<Locale, SoftReference<DateFormatSymbols>> cachedInstances
|
|
= new ConcurrentHashMap<>(3);
|
|
|
|
private transient int lastZoneIndex = 0;
|
|
|
|
/**
|
|
* Cached hash code
|
|
*/
|
|
transient volatile int cachedHashCode = 0;
|
|
|
|
/**
|
|
* Initializes this DateFormatSymbols with the locale data. This method uses
|
|
* a cached DateFormatSymbols instance for the given locale if available. If
|
|
* there's no cached one, this method creates an uninitialized instance and
|
|
* populates its fields from the resource bundle for the locale, and caches
|
|
* the instance. Note: zoneStrings isn't initialized in this method.
|
|
*/
|
|
private void initializeData(Locale locale) {
|
|
SoftReference<DateFormatSymbols> ref = cachedInstances.get(locale);
|
|
DateFormatSymbols dfs;
|
|
if (ref == null || (dfs = ref.get()) == null) {
|
|
if (ref != null) {
|
|
// Remove the empty SoftReference
|
|
cachedInstances.remove(locale, ref);
|
|
}
|
|
dfs = new DateFormatSymbols(false);
|
|
|
|
// Initialize the fields from the ResourceBundle for locale.
|
|
LocaleProviderAdapter adapter
|
|
= LocaleProviderAdapter.getAdapter(DateFormatSymbolsProvider.class, locale);
|
|
// Avoid any potential recursions
|
|
if (!(adapter instanceof ResourceBundleBasedAdapter)) {
|
|
adapter = LocaleProviderAdapter.getResourceBundleBased();
|
|
}
|
|
ResourceBundle resource
|
|
= ((ResourceBundleBasedAdapter)adapter).getLocaleData().getDateFormatData(locale);
|
|
|
|
dfs.locale = locale;
|
|
// JRE and CLDR use different keys
|
|
// JRE: Eras, short.Eras and narrow.Eras
|
|
// CLDR: long.Eras, Eras and narrow.Eras
|
|
if (resource.containsKey("Eras")) {
|
|
dfs.eras = resource.getStringArray("Eras");
|
|
} else if (resource.containsKey("long.Eras")) {
|
|
dfs.eras = resource.getStringArray("long.Eras");
|
|
} else if (resource.containsKey("short.Eras")) {
|
|
dfs.eras = resource.getStringArray("short.Eras");
|
|
}
|
|
dfs.months = resource.getStringArray("MonthNames");
|
|
dfs.shortMonths = resource.getStringArray("MonthAbbreviations");
|
|
dfs.ampms = resource.getStringArray("AmPmMarkers");
|
|
dfs.localPatternChars = resource.getString("DateTimePatternChars");
|
|
|
|
// Day of week names are stored in a 1-based array.
|
|
dfs.weekdays = toOneBasedArray(resource.getStringArray("DayNames"));
|
|
dfs.shortWeekdays = toOneBasedArray(resource.getStringArray("DayAbbreviations"));
|
|
|
|
// Put dfs in the cache
|
|
ref = new SoftReference<>(dfs);
|
|
SoftReference<DateFormatSymbols> x = cachedInstances.putIfAbsent(locale, ref);
|
|
if (x != null) {
|
|
DateFormatSymbols y = x.get();
|
|
if (y == null) {
|
|
// Replace the empty SoftReference with ref.
|
|
cachedInstances.replace(locale, x, ref);
|
|
} else {
|
|
ref = x;
|
|
dfs = y;
|
|
}
|
|
}
|
|
// If the bundle's locale isn't the target locale, put another cache
|
|
// entry for the bundle's locale.
|
|
Locale bundleLocale = resource.getLocale();
|
|
if (!bundleLocale.equals(locale)) {
|
|
SoftReference<DateFormatSymbols> z
|
|
= cachedInstances.putIfAbsent(bundleLocale, ref);
|
|
if (z != null && z.get() == null) {
|
|
cachedInstances.replace(bundleLocale, z, ref);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Copy the field values from dfs to this instance.
|
|
copyMembers(dfs, this);
|
|
}
|
|
|
|
private static String[] toOneBasedArray(String[] src) {
|
|
int len = src.length;
|
|
String[] dst = new String[len + 1];
|
|
dst[0] = "";
|
|
for (int i = 0; i < len; i++) {
|
|
dst[i + 1] = src[i];
|
|
}
|
|
return dst;
|
|
}
|
|
|
|
/**
|
|
* Package private: used by SimpleDateFormat
|
|
* Gets the index for the given time zone ID to obtain the time zone
|
|
* strings for formatting. The time zone ID is just for programmatic
|
|
* lookup. NOT LOCALIZED!!!
|
|
* @param ID the given time zone ID.
|
|
* @return the index of the given time zone ID. Returns -1 if
|
|
* the given time zone ID can't be located in the DateFormatSymbols object.
|
|
* @see java.util.SimpleTimeZone
|
|
*/
|
|
final int getZoneIndex(String ID) {
|
|
String[][] zoneStrings = getZoneStringsWrapper();
|
|
|
|
/*
|
|
* getZoneIndex has been re-written for performance reasons. instead of
|
|
* traversing the zoneStrings array every time, we cache the last used zone
|
|
* index
|
|
*/
|
|
if (lastZoneIndex < zoneStrings.length && ID.equals(zoneStrings[lastZoneIndex][0])) {
|
|
return lastZoneIndex;
|
|
}
|
|
|
|
/* slow path, search entire list */
|
|
for (int index = 0; index < zoneStrings.length; index++) {
|
|
if (ID.equals(zoneStrings[index][0])) {
|
|
lastZoneIndex = index;
|
|
return index;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* Wrapper method to the getZoneStrings(), which is called from inside
|
|
* the java.text package and not to mutate the returned arrays, so that
|
|
* it does not need to create a defensive copy.
|
|
*/
|
|
final String[][] getZoneStringsWrapper() {
|
|
if (isSubclassObject()) {
|
|
return getZoneStrings();
|
|
} else {
|
|
return getZoneStringsImpl(false);
|
|
}
|
|
}
|
|
|
|
private String[][] getZoneStringsImpl(boolean needsCopy) {
|
|
if (zoneStrings == null) {
|
|
zoneStrings = TimeZoneNameUtility.getZoneStrings(locale);
|
|
}
|
|
|
|
if (!needsCopy) {
|
|
return zoneStrings;
|
|
}
|
|
|
|
int len = zoneStrings.length;
|
|
String[][] aCopy = new String[len][];
|
|
for (int i = 0; i < len; i++) {
|
|
aCopy[i] = Arrays.copyOf(zoneStrings[i], zoneStrings[i].length);
|
|
}
|
|
return aCopy;
|
|
}
|
|
|
|
private boolean isSubclassObject() {
|
|
return !getClass().getName().equals("java.text.DateFormatSymbols");
|
|
}
|
|
|
|
/**
|
|
* Clones all the data members from the source DateFormatSymbols to
|
|
* the target DateFormatSymbols.
|
|
*
|
|
* @param src the source DateFormatSymbols.
|
|
* @param dst the target DateFormatSymbols.
|
|
*/
|
|
private void copyMembers(DateFormatSymbols src, DateFormatSymbols dst)
|
|
{
|
|
dst.locale = src.locale;
|
|
dst.eras = Arrays.copyOf(src.eras, src.eras.length);
|
|
dst.months = Arrays.copyOf(src.months, src.months.length);
|
|
dst.shortMonths = Arrays.copyOf(src.shortMonths, src.shortMonths.length);
|
|
dst.weekdays = Arrays.copyOf(src.weekdays, src.weekdays.length);
|
|
dst.shortWeekdays = Arrays.copyOf(src.shortWeekdays, src.shortWeekdays.length);
|
|
dst.ampms = Arrays.copyOf(src.ampms, src.ampms.length);
|
|
if (src.zoneStrings != null) {
|
|
dst.zoneStrings = src.getZoneStringsImpl(true);
|
|
} else {
|
|
dst.zoneStrings = null;
|
|
}
|
|
dst.localPatternChars = src.localPatternChars;
|
|
dst.cachedHashCode = 0;
|
|
}
|
|
|
|
/**
|
|
* Write out the default serializable data, after ensuring the
|
|
* <code>zoneStrings</code> field is initialized in order to make
|
|
* sure the backward compatibility.
|
|
*
|
|
* @since 1.6
|
|
*/
|
|
private void writeObject(ObjectOutputStream stream) throws IOException {
|
|
if (zoneStrings == null) {
|
|
zoneStrings = TimeZoneNameUtility.getZoneStrings(locale);
|
|
}
|
|
stream.defaultWriteObject();
|
|
}
|
|
}
|