    001    // Copyright 2006 The Apache Software Foundation
    002    //
    003    // Licensed under the Apache License, Version 2.0 (the "License");
    004    // you may not use this file except in compliance with the License.
    005    // You may obtain a copy of the License at
    006    //
    007    //     http://www.apache.org/licenses/LICENSE-2.0
    008    //
    009    // Unless required by applicable law or agreed to in writing, software
    010    // distributed under the License is distributed on an "AS IS" BASIS,
    011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    012    // See the License for the specific language governing permissions and
    013    // limitations under the License.
    014
    015    package org.apache.tapestry5.ioc.internal.util;
    016
    017    import org.apache.tapestry5.ioc.MessageFormatter;
    018
    019    import java.util.Locale;
    020
    021
    022    public class MessageFormatterImpl implements MessageFormatter
    023    {
    024        private final String format;
    025
    026        private final Locale locale;
    027
    028        public MessageFormatterImpl(String format, Locale locale)
    029        {
    030            this.format = format;
    031            this.locale = locale;
    032        }
    033
    034        public String format(Object... args)
    035        {
    036            for (int i = 0; i < args.length; i++)
    037            {
    038                Object arg = args[i];
    039
    040                if (Throwable.class.isInstance(arg))
    041                {
    042                    args[i] = InternalUtils.toMessage((Throwable) arg);
    043                }
    044            }
    045
    046            // Might be tempting to create a Formatter object and just keep reusing it ... but
    047            // Formatters are not threadsafe.
    048
    049            return String.format(locale, format, args);
    050        }
    051
    052    }