org.wisdom.i18n.UTF8PropertiesResourceBundle Maven / Gradle / Ivy
/*
* #%L
* Wisdom-Framework
* %%
* Copyright (C) 2013 - 2014 Wisdom Framework
* %%
* Licensed 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.
* #L%
*/
package org.wisdom.i18n;
import com.google.common.base.Charsets;
import java.io.IOException;
import java.io.InputStream;
import java.util.Enumeration;
import java.util.PropertyResourceBundle;
import java.util.ResourceBundle;
/**
* UTF-8 {@link ResourceBundle} implementation. This implementation overrides
* the {@link java.util.ResourceBundle#handleGetObject(java.lang.String)} method
* on a wrapped {@link PropertyResourceBundle} to support UTF-8.
*/
public class UTF8PropertiesResourceBundle extends ResourceBundle {
/**
* The wrapped property resource bundle.
*/
private PropertyResourceBundle bundle;
/**
* Creates a UTF8PropertiesResourceBundle.
*
* @param is an input stream to create the {@link PropertyResourceBundle}.
* @throws IOException if the input stream cannot be read, or if the
* {@link PropertyResourceBundle} cannot be created correctly.
*/
public UTF8PropertiesResourceBundle(InputStream is) throws IOException {
bundle = new PropertyResourceBundle(is);
}
/**
* Gets the keys contained in the wrapped {@link PropertyResourceBundle}.
*
* @return the list of key.
* @see java.util.ResourceBundle#getKeys()
*/
public Enumeration getKeys() {
return bundle.getKeys();
}
/**
* This methods reads the value associated with the given key from the
* wrapped {@link PropertyResourceBundle} using ISO-8859-1, and returned a
* UTF-8 string.
*
* @param key the key
* @return the UTF-8 encoded localized value.
* @see java.util.ResourceBundle#handleGetObject(java.lang.String)
*/
protected Object handleGetObject(String key) {
String value = (String) bundle.handleGetObject(key);
if (value == null) {
return null;
} else {
// This strange hack let us read UTF-8 characters.
return new String(value.getBytes(Charsets.ISO_8859_1), Charsets.UTF_8);
}
}
}