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/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 */
package org.codehaus.groovy.tools.shell.util;

import groovy.lang.GroovyObjectSupport;

import java.text.MessageFormat;
import java.util.MissingResourceException;
import java.util.ResourceBundle;

/**
 * Message source backed up by one or more {@link java.util.ResourceBundle}
 * instances for simple i18n support.
 *
 * @author Jason Dillon
 */
public class MessageSource
    extends GroovyObjectSupport
{
    private final String[] bundleNames;
    
    private ResourceBundle[] cachedBundles;
    
    public MessageSource(final String[] names) {
        assert names != null;
        assert names.length != 0;
        
        this.bundleNames = names;
    }
    
    public MessageSource(final String name) {
        this(new String[] { name });
    }
    
    private static String[] classNames(final Class[] types) {
        assert types != null;
        assert types.length != 0;
        
        String[] names = new String[types.length];
        
        for (int i=0; i