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500 lines
16 KiB
Java
500 lines
16 KiB
Java
/* ChoiceFormat.java -- Format over a range of numbers
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Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.text;
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import java.util.Locale;
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import java.util.MissingResourceException;
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import java.util.ResourceBundle;
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/**
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* This class acts as container for locale specific date/time formatting
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* information such as the days of the week and the months of the year.
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* @author Per Bothner <bothner@cygnus.com>
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* @date October 24, 1998.
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*/
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/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3.
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* Status: Believed complete and correct.
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*/
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public class DateFormatSymbols implements java.io.Serializable, Cloneable
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{
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String[] ampms;
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String[] eras;
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private String localPatternChars;
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String[] months;
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String[] shortMonths;
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String[] shortWeekdays;
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String[] weekdays;
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private String[][] zoneStrings;
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private static final long serialVersionUID = -5987973545549424702L;
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// The order of these prefixes must be the same as in DateFormat
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private static final String[] formatPrefixes =
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{
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"full", "long", "medium", "short"
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};
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// These are each arrays with a value for SHORT, MEDIUM, LONG, FULL,
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// and DEFAULT (constants defined in java.text.DateFormat). While
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// not part of the official spec, we need a way to get at locale-specific
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// default formatting patterns. They are declared package scope so
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// as to be easily accessible where needed (DateFormat, SimpleDateFormat).
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transient String[] dateFormats;
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transient String[] timeFormats;
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private String[] formatsForKey(ResourceBundle res, String key)
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{
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String[] values = new String [formatPrefixes.length];
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for (int i = 0; i < formatPrefixes.length; i++)
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{
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values[i] = res.getString(formatPrefixes[i]+key);
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}
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return values;
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}
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/**
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* This method initializes a new instance of <code>DateFormatSymbols</code>
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* by loading the date format information for the specified locale.
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*
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* @param locale The locale for which date formatting symbols should
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* be loaded.
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*/
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public DateFormatSymbols (Locale locale) throws MissingResourceException
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{
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ResourceBundle res
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= ResourceBundle.getBundle("gnu.java.locale.LocaleInformation", locale);
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ampms = res.getStringArray ("ampms");
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eras = res.getStringArray ("eras");
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localPatternChars = res.getString ("localPatternChars");
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months = res.getStringArray ("months");
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shortMonths = res.getStringArray ("shortMonths");
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shortWeekdays = res.getStringArray ("shortWeekdays");
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weekdays = res.getStringArray ("weekdays");
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zoneStrings = (String[][]) res.getObject ("zoneStrings");
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dateFormats = formatsForKey(res, "DateFormat");
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timeFormats = formatsForKey(res, "TimeFormat");
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}
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/**
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* This method loads the format symbol information for the default
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* locale.
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*/
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public DateFormatSymbols () throws MissingResourceException
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{
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this (Locale.getDefault());
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}
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/**
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* This method returns the list of strings used for displaying AM or PM.
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* This is a two element <code>String</code> array indexed by
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* <code>Calendar.AM</code> and <code>Calendar.PM</code>
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*
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* @return The list of AM/PM display strings.
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*/
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public String[] getAmPmStrings()
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{
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return ampms;
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}
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/**
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* This method returns the list of strings used for displaying eras
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* (e.g., "BC" and "AD"). This is a two element <code>String</code>
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* array indexed by <code>Calendar.BC</code> and <code>Calendar.AD</code>.
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*
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* @return The list of era disply strings.
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*/
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public String[] getEras()
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{
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return eras;
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}
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/**
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* This method returns the pattern character information for this
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* object. This is an 18 character string that contains the characters
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* that are used in creating the date formatting strings in
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* <code>SimpleDateFormat</code>. The following are the character
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* positions in the string and which format character they correspond
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* to (the character in parentheses is the default value in the US English
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* locale):
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* <p>
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* <ul>
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* <li>0 - era (G)
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* <li>1 - year (y)
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* <li>2 - month (M)
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* <li 3 - day of month (d)
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* <li>4 - hour out of 12, from 1-12 (h)
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* <li>5 - hour out of 24, from 0-23 (H)
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* <li>6 - minute (m)
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* <li>7 - second (s)
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* <li>8 - millisecond (S)
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* <li>9 - date of week (E)
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* <li>10 - date of year (D)
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* <li>11 - day of week in month, eg. "4th Thur in Nov" (F)
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* <li>12 - week in year (w)
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* <li>13 - week in month (W)
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* <li>14 - am/pm (a)
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* <li>15 - hour out of 24, from 1-24 (k)
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* <li>16 - hour out of 12, from 0-11 (K)
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* <li>17 - time zone (z)
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* </ul>
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*
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* @return The format patter characters
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*/
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public String getLocalPatternChars()
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{
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return localPatternChars;
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}
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/**
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* This method returns the list of strings used for displaying month
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* names (e.g., "January" and "February"). This is a thirteen element
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* string array indexed by <code>Calendar.JANUARY</code> through
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* <code>Calendar.UNDECEMBER</code>. Note that there are thirteen
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* elements because some calendars have thriteen months.
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*
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* @return The list of month display strings.
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*/
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public String[] getMonths ()
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{
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return months;
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}
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/**
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* This method returns the list of strings used for displaying abbreviated
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* month names (e.g., "Jan" and "Feb"). This is a thirteen element
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* <code>String</code> array indexed by <code>Calendar.JANUARY</code>
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* through <code>Calendar.UNDECEMBER</code>. Note that there are thirteen
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* elements because some calendars have thirteen months.
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*
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* @return The list of abbreviated month display strings.
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*/
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public String[] getShortMonths ()
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{
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return shortMonths;
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}
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/**
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* This method returns the list of strings used for displaying abbreviated
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* weekday names (e.g., "Sun" and "Mon"). This is an eight element
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* <code>String</code> array indexed by <code>Calendar.SUNDAY</code>
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* through <code>Calendar.SATURDAY</code>. Note that the first element
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* of this array is ignored.
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*
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* @return This list of abbreviated weekday display strings.
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*/
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public String[] getShortWeekdays ()
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{
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return shortWeekdays;
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}
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/**
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* This method returns the list of strings used for displaying weekday
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* names (e.g., "Sunday" and "Monday"). This is an eight element
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* <code>String</code> array indexed by <code>Calendar.SUNDAY</code>
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* through <code>Calendar.SATURDAY</code>. Note that the first element
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* of this array is ignored.
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*
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* @return This list of weekday display strings.
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*/
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public String[] getWeekdays ()
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{
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return weekdays;
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}
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/**
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* This method returns this list of localized timezone display strings.
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* This is a two dimensional <code>String</code> array where each row in
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* the array contains five values:
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* <P>
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* <ul>
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* <li>0 - The non-localized time zone id string.
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* <li>1 - The long name of the time zone (standard time).
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* <li>2 - The short name of the time zone (standard time).
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* <li>3 - The long name of the time zone (daylight savings time).
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* <li>4 - the short name of the time zone (daylight savings time).
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*
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* @return The list of time zone display strings.
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*/
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public String[] [] getZoneStrings ()
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{
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return zoneStrings;
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}
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/**
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* This method sets the list of strings used to display AM/PM values to
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* the specified list.
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* This is a two element <code>String</code> array indexed by
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* <code>Calendar.AM</code> and <code>Calendar.PM</code>
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*
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* @param ampms The new list of AM/PM display strings.
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*/
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public void setAmPmStrings (String[] value)
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{
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ampms = value;
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}
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/**
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* This method sets the list of strings used to display time eras to
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* to the specified list.
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* This is a two element <code>String</code>
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* array indexed by <code>Calendar.BC</code> and <code>Calendar.AD</code>.
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*
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* @param eras The new list of era disply strings.
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*/
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public void setEras (String[] value)
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{
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eras = value;
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}
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/**
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* This method sets the list of characters used to specific date/time
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* formatting strings.
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* This is an 18 character string that contains the characters
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* that are used in creating the date formatting strings in
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* <code>SimpleDateFormat</code>. The following are the character
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* positions in the string and which format character they correspond
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* to (the character in parentheses is the default value in the US English
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* locale):
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* <p>
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* <ul>
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* <li>0 - era (G)
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* <li>1 - year (y)
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* <li>2 - month (M)
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* <li 3 - day of month (d)
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* <li>4 - hour out of 12, from 1-12 (h)
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* <li>5 - hour out of 24, from 0-23 (H)
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* <li>6 - minute (m)
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* <li>7 - second (s)
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* <li>8 - millisecond (S)
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* <li>9 - date of week (E)
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* <li>10 - date of year (D)
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* <li>11 - day of week in month, eg. "4th Thur in Nov" (F)
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* <li>12 - week in year (w)
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* <li>13 - week in month (W)
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* <li>14 - am/pm (a)
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* <li>15 - hour out of 24, from 1-24 (k)
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* <li>16 - hour out of 12, from 0-11 (K)
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* <li>17 - time zone (z)
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* </ul>
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*
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* @param localPatternChars The new format patter characters
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*/
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public void setLocalPatternChars (String value)
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{
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localPatternChars = value;
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}
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/**
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* This method sets the list of strings used to display month names.
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* This is a thirteen element
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* string array indexed by <code>Calendar.JANUARY</code> through
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* <code>Calendar.UNDECEMBER</code>. Note that there are thirteen
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* elements because some calendars have thriteen months.
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*
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* @param months The list of month display strings.
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*/
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public void setMonths (String[] value)
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{
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months = value;
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}
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/**
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* This method sets the list of strings used to display abbreviated month
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* names.
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* This is a thirteen element
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* <code>String</code> array indexed by <code>Calendar.JANUARY</code>
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* through <code>Calendar.UNDECEMBER</code>. Note that there are thirteen
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* elements because some calendars have thirteen months.
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*
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* @param shortMonths The new list of abbreviated month display strings.
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*/
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public void setShortMonths (String[] value)
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{
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shortMonths = value;
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}
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/**
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* This method sets the list of strings used to display abbreviated
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* weekday names.
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* This is an eight element
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* <code>String</code> array indexed by <code>Calendar.SUNDAY</code>
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* through <code>Calendar.SATURDAY</code>. Note that the first element
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* of this array is ignored.
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*
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* @param shortWeekdays This list of abbreviated weekday display strings.
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*/
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public void setShortWeekdays (String[] value)
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{
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shortWeekdays = value;
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}
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/**
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* This method sets the list of strings used to display weekday names.
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* This is an eight element
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* <code>String</code> array indexed by <code>Calendar.SUNDAY</code>
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* through <code>Calendar.SATURDAY</code>. Note that the first element
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* of this array is ignored.
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*
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* @param weekdays This list of weekday display strings.
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*/
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public void setWeekdays (String[] value)
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{
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weekdays = value;
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}
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/**
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* This method sets the list of display strings for time zones.
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* This is a two dimensional <code>String</code> array where each row in
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* the array contains five values:
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* <P>
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* <ul>
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* <li>0 - The non-localized time zone id string.
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* <li>1 - The long name of the time zone (standard time).
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* <li>2 - The short name of the time zone (standard time).
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* <li>3 - The long name of the time zone (daylight savings time).
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* <li>4 - the short name of the time zone (daylight savings time).
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*
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* @return The list of time zone display strings.
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*/
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public void setZoneStrings (String[][] value)
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{
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zoneStrings = value;
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}
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/* Does a "deep" equality test - recurses into arrays. */
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private static boolean equals (Object x, Object y)
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{
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if (x == y)
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return true;
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if (x == null || y == null)
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return false;
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if (! (x instanceof Object[]) || ! (y instanceof Object[]))
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return x.equals(y);
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Object[] xa = (Object[]) x;
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Object[] ya = (Object[]) y;
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if (xa.length != ya.length)
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return false;
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for (int i = xa.length; --i >= 0; )
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{
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if (! equals(xa[i], ya[i]))
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return false;
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}
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return true;
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}
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private static int hashCode (Object x)
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{
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if (x == null)
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return 0;
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if (! (x instanceof Object[]))
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return x.hashCode();
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Object[] xa = (Object[]) x;
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int hash = 0;
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for (int i = 0; i < xa.length; i++)
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hash = 37 * hashCode(xa[i]);
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return hash;
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}
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/**
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* This method tests a specified object for equality against this object.
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* This will be true if and only if the specified object:
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* <p>
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* <ul>
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* <li> Is not <code>null</code>.
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* <li> Is an instance of <code>DateFormatSymbols</code>.
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* <li> Contains identical formatting symbols to this object.
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* </ul>
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*
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* @param obj The <code>Object</code> to test for equality against.
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*
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* @return <code>true</code> if the specified object is equal to this one,
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* </code>false</code> otherwise.
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*/
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public boolean equals (Object obj)
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{
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if (! (obj instanceof DateFormatSymbols))
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return false;
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DateFormatSymbols other = (DateFormatSymbols) obj;
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return (equals(ampms, other.ampms)
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&& equals(eras, other.eras)
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&& equals(localPatternChars, other.localPatternChars)
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&& equals(months, other.months)
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&& equals(shortMonths, other.shortMonths)
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&& equals(shortWeekdays, other.shortWeekdays)
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&& equals(weekdays, other.weekdays)
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&& equals(zoneStrings, other.zoneStrings));
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}
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/**
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* Returns a new copy of this object.
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*
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* @param A copy of this object
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*/
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public Object clone ()
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{
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try
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{
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return super.clone ();
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}
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catch (CloneNotSupportedException e)
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{
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return null;
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}
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}
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/**
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* This method returns a hash value for this object.
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*
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* @return A hash value for this object.
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*/
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public int hashCode ()
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{
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return (hashCode(ampms)
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^ hashCode(eras)
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^ hashCode(localPatternChars)
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^ hashCode(months)
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^ hashCode(shortMonths)
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^ hashCode(shortWeekdays)
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^ hashCode(weekdays)
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^ hashCode(zoneStrings));
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}
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}
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