com.liferay.portal.language.LiferayResourceBundle.java Source code

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Here is the source code for com.liferay.portal.language.LiferayResourceBundle.java

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/**
 * 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 boolean containsKey(String key) {
        if (key == null) {
            throw new NullPointerException();
        }

        if (_map.containsKey(key)) {
            return true;
        }

        if (parent != null) {
            return parent.containsKey(key);
        }

        return false;
    }

    @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;

}