LiferayResourceBundle.java

/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.portal.language;

import com.liferay.portal.kernel.util.PropertiesUtil;

import java.io.IOException;
import java.io.InputStream;

import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import java.util.ResourceBundle;
import java.util.Set;

/**
 * @author Shuyang Zhou
 * @author Brian Wing Shun Chan
 */
public class LiferayResourceBundle extends ResourceBundle {

	public LiferayResourceBundle(InputStream inputStream, String charsetName)
		throws IOException {

		this(null, inputStream, charsetName);
	}

	public LiferayResourceBundle(
			ResourceBundle parentResourceBundle, InputStream inputStream,
			String charsetName)
		throws IOException {

		setParent(parentResourceBundle);

		_map = new HashMap<>();

		Properties properties = PropertiesUtil.load(inputStream, charsetName);

		LanguageResources.fixValues(_map, properties);
	}

	public LiferayResourceBundle(String string) throws IOException {
		_map = new HashMap<>();

		Properties properties = PropertiesUtil.load(string);

		LanguageResources.fixValues(_map, properties);
	}

	@Override
	public Enumeration<String> getKeys() {
		Set<String> keys = _map.keySet();

		if (parent == null) {
			return Collections.enumeration(keys);
		}

		return new ResourceBundleEnumeration(keys, parent.getKeys());
	}

	@Override
	public Object handleGetObject(String key) {
		if (key == null) {
			throw new NullPointerException();
		}

		return _map.get(key);
	}

	@Override
	protected Set<String> handleKeySet() {
		return _map.keySet();
	}

	private final Map<String, String> _map;

}