dateformatzonedata.java

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/*
 * 
 * @(#)DateFormatZoneData.java	1.29 06/10/11
 * 
 * Portions Copyright  2000-2008 Sun Microsystems, Inc. All Rights
 * Reserved.  Use is subject to license terms.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 2 only, as published by the Free Software Foundation.
 * 
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License version 2 for more details (a copy is
 * included at /legal/license.txt).
 * 
 * You should have received a copy of the GNU General Public License
 * version 2 along with this work; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 * 
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
 * Clara, CA 95054 or visit www.sun.com if you need additional
 * information or have any questions.
 */

/*
 * (C) Copyright Taligent, Inc. 1996, 1997 - All Rights Reserved
 * (C) Copyright IBM Corp. 1996 - 1998 - All Rights Reserved
 *
 * The original version of this source code and documentation
 * is copyrighted and owned by Taligent, Inc., a wholly-owned
 * subsidiary of IBM. These materials are provided under terms
 * of a License Agreement between Taligent and Sun. This technology
 * is protected by multiple US and International patents.
 *
 * This notice and attribution to Taligent may not be removed.
 * Taligent is a registered trademark of Taligent, Inc.
 *
 */

package sun.text.resources;

import java.util.ResourceBundle;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Vector;

/**
 * Supplement package private date-time formatting zone data for DateFormat.
 * DateFormatData used in DateFormat will be initialized by loading the data
 * from LocaleElements and DateFormatZoneData resources. The zone data are
 * represented with the following form:
 * {ID, new String[] {ID, long zone string, short zone string, long daylight 
 * string, short daylight string, representative city of zone}}, where ID is
 * NOT localized, but is used to look up the localized timezone data
 * internally. Localizers can localize any zone strings except
 * for the ID of the timezone.
 * Also, localizer should not touch "localPatternChars" entry.
 *
 * The <CODE>DateFormatZoneData</CODE> bundles of all locales must extend
 * this base class. This class implements similar to 
 * <CODE>ListResourceBundle</CODE>, except that it preserves the order of 
 * the keys that it obtained from <CODE>getContents</CODE> and return through
 * <CODE>getKeys</CODE>. As in <CODE>ListResourceBundle</CODE>,
 * <CODE>getKeys</CODE> appends keys from the parent bundle's
 * <CODE>getKeys</CODE> to this bundle's keys unless they duplicate
 * one of this bundle's keys.
 *
 * @see          ListResourceBundle
 * @see          Format
 * @see          DateFormatData
 * @see          LocaleElements
 * @see          SimpleDateFormat
 * @see          TimeZone
 * @version      1.29, 10/11/06
 * @author       Chen-Lieh Huang
 */
//  ROOT DateFormatZoneData
//
public class DateFormatZoneData extends ResourceBundle
{
    private static final String	LOCALPATTERNCHARS = "localPatternChars";

    /**
     * Override ResourceBundle. Same semantics.
     */
    public Object handleGetObject(String key) {
	if (lookup == null) {
	    loadLookup();
	}
	if (LOCALPATTERNCHARS.equals(key)) {
	    return lookup.get(key);
	}

	String[] contents = (String [])lookup.get(key);
	if (contents == null) { 
	    return null;	
	}

	int	clen = contents.length;
	String[] tmpobj = new String[clen+1];
	tmpobj[0] = key;
	for (int i = 0; i < clen; i++) {
	    tmpobj[i+1] = contents[i];
	}
	return tmpobj;
    }

    /**
     * Implementation of ResourceBundle.getKeys. Unlike the implementation in
     * <CODE>ListResourceBundle</CODE>, this implementation preserves 
     * the order of keys obtained from <CODE>getContents</CODE>.
     */
    public Enumeration getKeys() {
	if (lookup == null) {
	    loadLookup();
	}
	Enumeration result = null;
	if (parent != null) {
	    final Enumeration myKeys = keys.elements();
	    final Enumeration parentKeys = parent.getKeys();
	    
            result = new Enumeration() {
                public boolean hasMoreElements() {
                    if (temp == null) {
                        nextElement();
		    }
                    return (temp != null);
                }

                public Object nextElement() {
                    Object returnVal = temp;
                    if (myKeys.hasMoreElements()) {
                        temp = myKeys.nextElement();
                    } else {
                        temp = null;
                        while ((temp == null) && (parentKeys.hasMoreElements())) {
                            temp = parentKeys.nextElement();
                            if (lookup.containsKey(temp))
                                temp = null;
                        }
                    }
                    return returnVal;
                }
                Object temp = null;
            };
        } else {
            result = keys.elements();
        }
        return result;
    }

    /**
     * Create hashtable and key vector while loading resources.
     */
    private synchronized void loadLookup() {
	if (lookup != null) {
	    return;
	}
	Object[][] contents = getContents();
	Hashtable temp = new Hashtable(contents.length);
	Vector tempVec = new Vector(contents.length);
        for (int i = 0; i < contents.length; ++i) {
            temp.put(contents[i][0],contents[i][1]);
	    tempVec.add(contents[i][0]);
        }
	keys = tempVec;
        lookup = temp;
    }

    Hashtable lookup = null;
    Vector keys = null;

    /**
     * Overrides ListResourceBundle
     */
    public Object[][] getContents() {
	String ACT[] = new String[] {"Acre Time", "ACT",
				     "Acre Summer Time", "ACST"};
	String ADELAIDE[] = new String[] {"Central Standard Time (South Australia)", "CST",
					  "Central Summer Time (South Australia)", "CST"};
	String AGT[] = new String[] {"Argentine Time", "ART",
				     "Argentine Summer Time", "ARST"};
	String AKST[] = new String[] {"Alaska Standard Time", "AKST",
				      "Alaska Daylight Time", "AKDT"};
	String AMT[] = new String[] {"Amazon Time", "AMT",
				     "Amazon Summer Time", "AMST"};
	String ARAST[] = new String[] {"Arabia Standard Time", "AST",
				       "Arabia Daylight Time", "ADT"};
	String ARMT[] = new String[] {"Armenia Time", "AMT",
				      "Armenia Summer Time", "AMST"};
	String AST[] = new String[] {"Atlantic Standard Time", "AST",
				     "Atlantic Daylight Time", "ADT"};
	String BDT[] = new String[] {"Bangladesh Time", "BDT",
				     "Bangladesh Summer Time", "BDST"};
	String BRISBANE[] = new String[] {"Eastern Standard Time (Queensland)", "EST",
					  "Eastern Summer Time (Queensland)", "EST"};
	String BROKEN_HILL[] = new String[] {"Central Standard Time (South Australia/New South Wales)", "CST",
					     "Central Summer Time (South Australia/New South Wales)", "CST"};
	String BRT[] = new String[] {"Brasilia Time", "BRT",
				     "Brasilia Summer Time", "BRST"};
	String BTT[] = new String[] {"Bhutan Time", "BTT",
				     "Bhutan Summer Time", "BTST"};
	String CAT[] = new String[] {"Central African Time", "CAT",
				     "Central African Summer Time", "CAST"};
	String CET[] = new String[] {"Central European Time", "CET",
				     "Central European Summer Time", "CEST"};
	String CHAST[] = new String[] {"Chatham Standard Time", "CHAST",
				       "Chatham Daylight Time", "CHADT"};
	String CIT[] = new String[] {"Central Indonesia Time", "CIT",
				     "Central Indonesia Summer Time", "CIST"};
	String CLT[] = new String[] {"Chile Time", "CLT",
				     "Chile Summer Time", "CLST"};
	String CST[] = new String[] {"Central Standard Time", "CST",
				     "Central Daylight Time", "CDT"};
	String CTT[] = new String[] {"China Standard Time", "CST",
				     "China Daylight Time", "CDT"};
	String DARWIN[] = new String[] {"Central Standard Time (Northern Territory)", "CST",
					"Central Summer Time (Northern Territory)", "CST"};
	String DUBLIN[] = new String[] {"Greenwich Mean Time", "GMT",
					"Irish Summer Time", "IST"};
	String EAT[] = new String[] {"Eastern African Time", "EAT",
				     "Eastern African Summer Time", "EAST"};
	String EASTER[] = new String[] {"Easter Is. Time", "EAST",
					"Easter Is. Summer Time", "EASST"};
	String EET[] = new String[] {"Eastern European Time", "EET",
				     "Eastern European Summer Time", "EEST"};
	String EGT[] = new String[] {"Eastern Greenland Time", "EGT",
				     "Eastern Greenland Summer Time", "EGST"};
	String EST[] = new String[] {"Eastern Standard Time", "EST",
				     "Eastern Daylight Time", "EDT"};
	String EST_NSW[] = new String[] {"Eastern Standard Time (New South Wales)", "EST",
					 "Eastern Summer Time (New South Wales)", "EST"};
	String GAMBIER[] =  new String[] {"Gambier Time", "GAMT",
					  "Gambier Summer Time", "GAMST"};
	String GMT[] = new String[] {"Greenwich Mean Time", "GMT",
				   "Greenwich Mean Time", "GMT"};
	String GMTBST[] = new String[] {"Greenwich Mean Time", "GMT",
					"British Summer Time", "BST"};
	String GST[] = new String[] {"Gulf Standard Time", "GST",
				     "Gulf Daylight Time", "GDT"};
	String HAST[] = new String[] {"Hawaii-Aleutian Standard Time", "HAST",
				      "Hawaii-Aleutian Daylight Time", "HADT"};
	String HKT[] =  new String[] {"Hong Kong Time", "HKT",
				      "Hong Kong Summer Time", "HKST"};
	String HST[] = new String[] {"Hawaii Standard Time", "HST",
				     "Hawaii Daylight Time", "HDT"};
	String ICT[] = new String[] {"Indochina Time", "ICT",
				     "Indochina Summer Time", "ICST"};
	String IRT[] = new String[] {"Iran Standard Time", "IRST",
				     "Iran Daylight Time", "IRDT"};
	String ISRAEL[] = new String[] {"Israel Standard Time", "IST",
					"Israel Daylight Time", "IDT"};
	String IST[] = new String[] {"India Standard Time", "IST",
				     "India Daylight Time", "IDT"};
	String JST[] = new String[] {"Japan Standard Time", "JST",
				     "Japan Daylight Time", "JDT"};
	String KST[] = new String[] {"Korea Standard Time", "KST",
				     "Korea Daylight Time", "KDT"};
	String LORD_HOWE[] = new String[] {"Load Howe Standard Time", "LHST",
					   "Load Howe Summer Time", "LHST"};
	String MHT[] = new String[] {"Marshall Islands Time", "MHT",
				     "Marshall Islands Summer Time", "MHST"};
	String MSK[] = new String[] {"Moscow Standard Time", "MSK",
				     "Moscow Daylight Time", "MSD"};
	String MST[] = new String[] {"Mountain Standard Time", "MST",
				     "Mountain Daylight Time", "MDT"};
	String MYT[] = new String[] {"Malaysia Time", "MYT",
				     "Malaysia Summer Time", "MYST"};
	String NORONHA[] = new String[] {"Fernando de Noronha Time", "FNT",
					 "Fernando de Noronha Summer Time", "FNST"};
	String NST[] = new String[] {"Newfoundland Standard Time", "NST",
				     "Newfoundland Daylight Time", "NDT"};
	String NZST[] = new String[] {"New Zealand Standard Time", "NZST",
				      "New Zealand Daylight Time", "NZDT"};
        String PITCAIRN[] = new String[] {"Pitcairn Standard Time", "PST",
				        "Pitcairn Daylight Time", "PDT"};
	String PKT[] = new String[] {"Pakistan Time", "PKT",
				     "Pakistan Summer Time", "PKST"};
	String PST[] = new String[] {"Pacific Standard Time", "PST",
				     "Pacific Daylight Time", "PDT"};
	String SAST[] = new String[] {"South Africa Standard Time", "SAST",
				      "South Africa Summer Time", "SAST"};
	String SBT[] = new String[] {"Solomon Is. Time", "SBT",
				     "Solomon Is. Summer Time", "SBST"};
	String SGT[] = new String[] {"Singapore Time", "SGT",
				     "Singapore Summer Time", "SGST"};
	String TASMANIA[] = new String[] {"Eastern Standard Time (Tasmania)", "EST",
					  "Eastern Summer Time (Tasmania)", "EST"};
	String TMT[] = new String[] {"Turkmenistan Time", "TMT",
				     "Turkmenistan Summer Time", "TMST"};
	String ULAT[]= new String[] {"Ulaanbaatar Time", "ULAT",
				     "Ulaanbaatar Summer Time", "ULAST"};
	String WAT[] = new String[] {"Western African Time", "WAT",
				     "Western African Summer Time", "WAST"};
	String WET[] = new String[] {"Western European Time", "WET",
				     "Western European Summer Time", "WEST"};
	String WIT[] = new String[] {"West Indonesia Time", "WIT",
				     "West Indonesia Summer Time", "WIST"};
	String WST_AUS[] = new String[] {"Western Standard Time (Australia)", "WST",
					 "Western Summer Time (Australia)", "WST"};
	String SAMOA[] = new String[] {"Samoa Standard Time", "SST",
				       "Samoa Daylight Time", "SDT"};
	String WST_SAMOA[] = new String[] {"West Samoa Time", "WST",
					   "West Samoa Summer Time", "WSST"};
	String ChST[] = new String[] {"Chamorro Standard Time", "ChST",
				      "Chamorro Daylight Time", "ChDT"};
	String VICTORIA[] = new String[] {"Eastern Standard Time (Victoria)", "EST",
					  "Eastern Summer Time (Victoria)", "EST"};
	String UTC[] = new String[] {"Coordinated Universal Time", "UTC",
			 	     "Coordinated Universal Time", "UTC"};
	String UZT[] = new String[] {"Uzbekistan Time", "UZT",
				     "Uzbekistan Summer Time", "UZST"};

	return new Object[][] {
	    {"PST", PST},