org.hipparchus.exception.UTF8Control Maven / Gradle / Ivy
/*
* 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.hipparchus.exception;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import java.util.Locale;
import java.util.PropertyResourceBundle;
import java.util.ResourceBundle;
/** Control class loading properties in UTF-8 encoding.
*
* This class has been very slightly adapted from BalusC answer to question:
* How to use UTF-8 in resource properties with ResourceBundle.
*
*/
public class UTF8Control extends ResourceBundle.Control {
/** {@inheritDoc} */
@Override
public ResourceBundle newBundle(final String baseName, final Locale locale, final String format,
final ClassLoader loader, final boolean reload)
throws IllegalAccessException, InstantiationException, IOException {
// The below is a copy of the default implementation.
final String bundleName = toBundleName(baseName, locale);
final String resourceName = toResourceName(bundleName, "utf8");
ResourceBundle bundle = null;
InputStream stream = null;
if (reload) {
final URL url = loader.getResource(resourceName);
if (url != null) {
final URLConnection connection = url.openConnection();
if (connection != null) {
connection.setUseCaches(false);
stream = connection.getInputStream();
}
}
} else {
stream = loader.getResourceAsStream(resourceName);
}
if (stream != null) {
try {
// Only this line is changed to make it to read properties files as UTF-8.
bundle = new PropertyResourceBundle(new InputStreamReader(stream, "UTF-8"));
} finally {
stream.close();
}
}
return bundle;
}
}