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'databene commons' is an open source Java library by Volker Bergmann.
It provides extensions to the Java core library by utility classes, abstract concepts
and concrete implementations.
/*
* Copyright (C) 2004-2014 Volker Bergmann ([email protected]).
* All rights reserved.
*
* 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.
*/
package org.databene.commons.converter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.Charset;
import java.util.PropertyResourceBundle;
import java.util.Locale;
import java.util.ResourceBundle;
import org.databene.commons.Encodings;
import org.databene.commons.IOUtil;
import org.databene.commons.LocaleUtil;
/**
* Converts key strings to localized texts by using a ResourceBundle.
*
* Created: 07.06.2007 07:48:35
* @author Volker Bergmann
*/
public class PropertyResourceBundleConverter extends ThreadSafeConverter {
private final ResourceBundle bundle;
private final ResourceBundle.Control control = new UTF8Control();
public PropertyResourceBundleConverter(String baseName, Locale locale) {
super(String.class, String.class);
bundle = PropertyResourceBundle.getBundle(baseName, locale, control);
}
@Override
public String convert(String sourceValue) {
return bundle.getString(sourceValue);
}
static class UTF8Control extends PropertyResourceBundle.Control {
@Override
public ResourceBundle newBundle(String baseName, Locale locale, String format, ClassLoader loader, boolean reload)
throws IOException {
String bundleName = toBundleName(baseName, locale);
String resourceName = toResourceName(bundleName, "properties");
InputStream stream = IOUtil.getInputStreamForURI(resourceName, true);
Charset utf8 = Charset.forName(Encodings.UTF_8);
return new PropertyResourceBundle(new InputStreamReader(stream, utf8));
}
@Override
public Locale getFallbackLocale(String baseName, Locale locale) {
Locale fallback = LocaleUtil.getFallbackLocale();
return (fallback.equals(locale) ? null : fallback);
}
}
}