/*
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 1999 The Apache Software Foundation.  All rights 
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:  
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Xerces" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written 
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation and was
 * originally based on software copyright (c) 1999, International
 * Business Machines, Inc., http://www.apache.org.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

package org.apache.xerces.msg;

import java.util.Locale;
import java.util.ListResourceBundle;
import java.util.ResourceBundle;
import java.util.StringTokenizer;


public class ExceptionMessagesLocalizer {
    
    static final String FMT001 = "FMT001";
    
    
    //REVIST: Do we make this an object and have a set, getLocale,
    // and cache the bundle?
    
    /** This method returns the localized message */
    public static String localizeMessage(String string, Locale locale) {
        
        ResourceBundle fResourceBundle = null;
        if (locale != null)
            fResourceBundle = ListResourceBundle.getBundle("org.apache.xerces.msg.ExceptionMessages", locale);
        if (fResourceBundle == null || locale == null)
            fResourceBundle = ListResourceBundle.getBundle("org.apache.xerces.msg.ExceptionMessages");
        
        int keyIndex = string.indexOf(' ');
        String key = string.substring(0, keyIndex);
        // newline index
        int nlIndex = string.indexOf('\n');
        if (nlIndex == 0 || key == null || key.equals("")) return null; // REVIST: should never happen
 
        String msg = fResourceBundle.getString(key);
        if (nlIndex < 0) {
            return msg;
        }
       
        StringTokenizer st = new StringTokenizer(string.substring(nlIndex+1), "\t");
        int count = st.countTokens();
        String [] args = new String[count];
        for(int i=0; i < count; i++) {
            args[i] = st.nextToken();
        }
        
        if (args != null) {
            try {
                msg = java.text.MessageFormat.format(msg, args);
            } catch (Exception e) {
                msg = fResourceBundle.getString(FMT001)+ ": " + msg;
            }
        } 
        return msg;
    }
    
}