/*

 */

/*

 * 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 com.sun.org.apache.xerces.internal.dom;

import java.util.Locale;

import java.util.MissingResourceException;

import java.util.ResourceBundle;

/**

 * Used to format DOM error messages, using the system locale.

 *

 * @xerces.internal

 *

 * @author Sandy Gao, IBM

 */

public class DOMMessageFormatter {

    public static final String DOM_DOMAIN = "http://www.w3.org/dom/DOMTR";

    public static final String XML_DOMAIN = "http://www.w3.org/TR/1998/REC-xml-19980210";

    public static final String SERIALIZER_DOMAIN = "http://apache.org/xml/serializer";

    private static ResourceBundle domResourceBundle = null;

    private static ResourceBundle xmlResourceBundle = null;

    private static ResourceBundle serResourceBundle = null;

    private static Locale locale = null;

    DOMMessageFormatter(){

        locale = Locale.getDefault();

    }

    /**

     * Formats a message with the specified arguments using the given

     * locale information.

     *

     * @param domain    domain from which error string is to come.

     * @param key       The message key.

     * @param arguments The message replacement text arguments. The order

     *                  of the arguments must match that of the placeholders

     *                  in the actual message.

     *

     * @return          the formatted message.

     *

     * @throws MissingResourceException Thrown if the message with the

     *                                  specified key cannot be found.

     */

    public static String formatMessage(String domain,

    String key, Object[] arguments)

    throws MissingResourceException {

        ResourceBundle resourceBundle = getResourceBundle(domain);

        if(resourceBundle == null){

            init();

            resourceBundle = getResourceBundle(domain);

            if(resourceBundle == null)

                throw new MissingResourceException("Unknown domain" + domain, null, key);

        }

        // format message

        String msg;

        try {

            msg = key + ": " + resourceBundle.getString(key);

            if (arguments != null) {

                try {

                    msg = java.text.MessageFormat.format(msg, arguments);

                }

                catch (Exception e) {

                    msg = resourceBundle.getString("FormatFailed");

                    msg += " " + resourceBundle.getString(key);

                }

            }

        } // error

        catch (MissingResourceException e) {

            msg = resourceBundle.getString("BadMessageKey");

            throw new MissingResourceException(key, msg, key);

        }

        // no message

        if (msg == null) {

            msg = key;

            if (arguments.length > 0) {

                StringBuffer str = new StringBuffer(msg);

                str.append('?');

                for (int i = 0; i < arguments.length; i++) {

                    if (i > 0) {

                        str.append('&');

                    }

                    str.append(String.valueOf(arguments[i]));

                }

            }

        }

        return msg;

    }

    static ResourceBundle getResourceBundle(String domain){

        if(domain == DOM_DOMAIN || domain.equals(DOM_DOMAIN))

            return domResourceBundle;

        else if( domain == XML_DOMAIN || domain.equals(XML_DOMAIN))

            return xmlResourceBundle;

        else if(domain == SERIALIZER_DOMAIN || domain.equals(SERIALIZER_DOMAIN))

            return serResourceBundle;

        return null;

    }

    /**

     * Initialize Message Formatter.

     */

    public static void init(){

        if (locale != null) {

            domResourceBundle = SecuritySupport.getResourceBundle("com.sun.org.apache.xerces.internal.impl.msg.DOMMessages", locale);

            serResourceBundle = SecuritySupport.getResourceBundle("com.sun.org.apache.xerces.internal.impl.msg.XMLSerializerMessages", locale);

            xmlResourceBundle = SecuritySupport.getResourceBundle("com.sun.org.apache.xerces.internal.impl.msg.XMLMessages", locale);

        }else{

            domResourceBundle = SecuritySupport.getResourceBundle("com.sun.org.apache.xerces.internal.impl.msg.DOMMessages");

            serResourceBundle = SecuritySupport.getResourceBundle("com.sun.org.apache.xerces.internal.impl.msg.XMLSerializerMessages");

            xmlResourceBundle = SecuritySupport.getResourceBundle("com.sun.org.apache.xerces.internal.impl.msg.XMLMessages");

        }

    }

    /**

     * setLocale to be used by the formatter.

     * @param locale

     */

    public static void setLocale(Locale dlocale){

        locale = dlocale;

    }

}