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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.apache.el.util;
import java.text.Format;
import java.text.MessageFormat;
import java.text.NumberFormat;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
/**
* @author Jacob Hookom [jacob@hookom.net]
*/
public final class MessageFactory {
private static final ResourceBundle DEFAULT_BUNDLE = ResourceBundle.getBundle("org.apache.el.LocalStrings");
private static final MessageFactory DEFAULT_MESSAGE_FACTORY = new MessageFactory(DEFAULT_BUNDLE);
public static String get(final String key) {
return DEFAULT_MESSAGE_FACTORY.getInternal(key);
}
public static String get(final String key, final Object... args) {
return DEFAULT_MESSAGE_FACTORY.getInternal(key, args);
}
private final ResourceBundle bundle;
public MessageFactory(ResourceBundle bundle) {
this.bundle = bundle;
}
protected String getInternal(final String key) {
try {
return bundle.getString(key);
} catch (MissingResourceException e) {
return key;
}
}
protected String getInternal(final String key, final Object... args) {
String value = getInternal(key);
MessageFormat mf = new MessageFormat(value);
Format[] formats = null;
// Unless an argument has been explicitly configured to use a number
// format, convert all Number arguments to String else MessageFormat may
// try to format them in unexpected ways.
if (args != null) {
for (int i = 0; i < args.length; i++) {
if (args[i] instanceof Number) {
if (formats == null) {
formats = mf.getFormatsByArgumentIndex();
}
if (i < formats.length && !(formats[i] instanceof NumberFormat)) {
args[i] = args[i].toString();
}
}
}
}
return mf.format(args, new StringBuffer(), null).toString();
}
}
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