resource.java

J2me唆哈的代码

/*
 * @(#)Resource.java	1.10 02/09/03 @(#)
 *
 * Copyright (c) 2000-2002 Sun Microsystems, Inc.  All rights reserved.
 * PROPRIETARY/CONFIDENTIAL
 * Use is subject to license terms.
 */

package a.a.a.b;

import java.util.Hashtable;


abstract public class Resource {

    abstract protected Object[][] getContents();
    /** handle for the key value lookup table. */
    private Hashtable lookup = null;
    /** 
     * load the lookup table.
     */
    abstract protected boolean isLocalizedAMPMafterTime();

    static Resource res = new Resource_Chs();

    public static String getString(String key) {
        String lStr = null;
        if (res != null) {
            if (res.lookup == null) {
                res.loadLookup();
            }
            lStr = (String) res.lookup.get(key);
        }
        return (lStr != null) ? lStr : key;
    }

    public static String getString(String key, String[] values) {
        boolean tokenMarkerFound = false;
        StringBuffer output;
        char currentChar;
        int length;
        String str = getString(key);

        if (str == null) {
            return null;
        }

        length = str.length();
        output = new StringBuffer(length * 2); // try to avoid resizing

        for (int i = 0; i < length; i++) {
            currentChar = str.charAt(i);
  
            if (tokenMarkerFound) {
                if (currentChar < '1' || currentChar > '9') {
                    // covers the "%%" case
                    output.append(currentChar);
                } else {
                    // substitute a value, "1" is index 0 into the value array
                    output.append(values[currentChar - '1']);
                }

                tokenMarkerFound = false;
            } else if (currentChar == '%') {
                tokenMarkerFound = true;
            } else {
                output.append(currentChar);
            }
        }
                
        return output.toString();
    }

    private void loadLookup() {
        if (lookup != null)
            return;

        Object[][] contents = getContents();
        Hashtable tmp = new Hashtable(contents.length);
        for (int i = 0; i < contents.length; ++i) {
            tmp.put(contents[i][0], contents[i][1]);
        }
        lookup = tmp;
    }

    public static String getDateString(String dayOfWeek, String date, 
                                       String month, String year) {
        String lStr = null;
        if (res != null) {
            if (res.lookup == null) {
                res.loadLookup();
            }
            lStr = res.getLocalizedDateString(dayOfWeek, date, month, year);
        }
        return (lStr != null) ? lStr :
            (dayOfWeek + ", " + date + " " + month + " " + year);
    }

    abstract protected String getLocalizedDateString(String dayOfWeek, 
                                                     String date, 
                                                     String month, 
                                                     String year);

    public static String getTimeString(String hour, String min, 
                                       String sec, String ampm) {
        String lStr = null;
        if (res != null) {
            if (res.lookup == null) {
                res.loadLookup();
            }
            lStr = res.getLocalizedTimeString(hour, min, sec, ampm);
        }
        return (lStr != null) ? lStr : 
            (hour + ":" + min + ":" + sec + 
             ((ampm == null) ? "" : (" " + ampm)));
    }

    abstract protected String getLocalizedTimeString(String hour, String min, 
                                                     String sec, String ampm);

    public static String getDateTimeString(String dayOfWeek, String date, 
                                           String month, String year,
                                           String hour, String min, 
                                           String sec, String ampm) {
        String lStr = null;
        if (res != null) {
            if (res.lookup == null) {
                res.loadLookup();
            }
            lStr = res.getLocalizedDateTimeString(dayOfWeek, date, month, year,
                                                  hour, min, sec, ampm);
        }
        return (lStr != null) ? lStr : 
            (dayOfWeek + ", " + date + " " + month + " " + year + " " +
             hour + ":" + min + ":" + sec +
             ((ampm == null) ? "" : (" " + ampm)));
    }

    abstract protected String getLocalizedDateTimeString(String dayOfWeek, 
                                                         String date, 
                                                         String month, 
                                                         String year,
                                                         String hour, 
                                                         String min, 
                                                         String sec, 
                                                         String ampm);

    public static int getFirstDayOfWeek() {
        if (res == null) {
            return java.util.Calendar.SUNDAY;
        }
        return res.getLocalizedFirstDayOfWeek();
    }

    abstract protected int getLocalizedFirstDayOfWeek();

    public static boolean isAMPMafterTime() {
        if (res == null) {
            return true;
        }
        return res.isLocalizedAMPMafterTime();
    }

}