/*

 */

/*

 * 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.jaxp.validation;

import java.util.Locale;

import java.util.MissingResourceException;

import java.util.ResourceBundle;

/**

 * <p>Used to format JAXP Validation API error messages using a specified locale.</p>

 *

 * @author Michael Glavassevich, IBM

 */

final class JAXPValidationMessageFormatter {

    /**

     * Formats a message with the specified arguments using the given

     * locale information.

     *

     * @param locale    The locale of the message.

     * @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(Locale locale,

        String key, Object[] arguments)

        throws MissingResourceException {

        ResourceBundle resourceBundle = null;

        if (locale != null) {

            resourceBundle =

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

        }

        else {

            resourceBundle =

                SecuritySupport.getResourceBundle("com.sun.org.apache.xerces.internal.impl.msg.JAXPValidationMessages");

        }

        // format message

        String msg;

        try {

            msg = 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;

    }

}