001/*
002 * $RCSfile: I18NImpl.java,v $
003 *
004 * 
005 * Copyright (c) 2005 Sun Microsystems, Inc. All  Rights Reserved.
006 * 
007 * Redistribution and use in source and binary forms, with or without
008 * modification, are permitted provided that the following conditions
009 * are met: 
010 * 
011 * - Redistribution of source code must retain the above copyright 
012 *   notice, this  list of conditions and the following disclaimer.
013 * 
014 * - Redistribution in binary form must reproduce the above copyright
015 *   notice, this list of conditions and the following disclaimer in 
016 *   the documentation and/or other materials provided with the
017 *   distribution.
018 * 
019 * Neither the name of Sun Microsystems, Inc. or the names of 
020 * contributors may be used to endorse or promote products derived 
021 * from this software without specific prior written permission.
022 * 
023 * This software is provided "AS IS," without a warranty of any 
024 * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND 
025 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, 
026 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
027 * EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL 
028 * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF 
029 * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
030 * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR 
031 * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
032 * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
033 * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
034 * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
035 * POSSIBILITY OF SUCH DAMAGES. 
036 * 
037 * You acknowledge that this software is not designed or intended for 
038 * use in the design, construction, operation or maintenance of any 
039 * nuclear facility. 
040 *
041 * $Revision: 1.1 $
042 * $Date: 2005/02/11 05:01:22 $
043 * $State: Exp $
044 */
045package com.github.jaiimageio.impl.common;
046
047import java.io.InputStream;
048import java.util.PropertyResourceBundle;
049
050/**
051 * Class to simplify use of internationalization message strings.
052 * Property files are constructed in terms of content as for JAI with
053 * one "key=value" pair per line. All such files however have the same
054 * name "properties". The resource extractor resolves the extraction of
055 * the file from the jar as the package name is included automatically.
056 *
057 * <p>Extenders need only provide a static method
058 * <code>getString(String)</code> which calls the static method in this
059 * class with the name of the invoking class and returns a
060 * <code>String</code>.
061 */
062public class I18NImpl {
063    /**
064     * Returns the message string with the specified key from the
065     * "properties" file in the package containing the class with
066     * the specified name.
067     */
068    protected static final String getString(String className, String key) {
069        PropertyResourceBundle bundle = null;
070        try {
071            InputStream stream =
072                Class.forName(className).getResourceAsStream("properties");
073            bundle = new PropertyResourceBundle(stream);
074        } catch(Throwable e) {
075            throw new RuntimeException(e); // Chain the exception.
076        }
077
078        return (String)bundle.handleGetObject(key);
079    }
080}