/**
 * This file Copyright (c) 2003-2012 Magnolia International
 * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
 *
 *
 * This file is dual-licensed under both the Magnolia
 * Network Agreement and the GNU General Public License.
 * You may elect to use one or the other of these licenses.
 *
 * This file is distributed in the hope that it will be
 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
 * implied warranty of MERCHANTABILITY or FITNESS FOR A
 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
 * Redistribution, except as permitted by whichever of the GPL
 * or MNA you select, is prohibited.
 *
 * 1. For the GPL license (GPL), you can redistribute and/or
 * modify this file under the terms of the GNU General
 * Public License, Version 3, as published by the Free Software
 * Foundation.  You should have received a copy of the GNU
 * General Public License, Version 3 along with this program;
 * if not, write to the Free Software Foundation, Inc., 51
 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * 2. For the Magnolia Network Agreement (MNA), this file
 * and the accompanying materials are made available under the
 * terms of the MNA which accompanies this distribution, and
 * is available at http://www.magnolia-cms.com/mna.html
 *
 * Any modifications to this file must keep this entire header
 * intact.
 *
 */
package info.magnolia.cms.util;

import info.magnolia.context.MgnlContext;

/**
 * Util class to handle selectors. A selector is the part between the first {@link info.magnolia.cms.core.Path#SELECTOR_DELIMITER} and the extension of an URI.
 * @version $Id$
 */
public class SelectorUtil {
    /**
     * <p>
     * get selector as requested from the URI. The selector is the part between the handle and the extension.
     * selector("http://server/mypage~x~1~f~4~.html") = "~x~1~f~4~"
     * </p>
     * <strong>Warning - this might change in the future - see MAGNOLIA-2343 for details.</strong>
     *
     * @return selector String as requested from the URI
     */
    public static String getSelector() {
        return MgnlContext.getAggregationState().getSelector();
    }

    /**
     * Get the selector by index
     * <strong>Warning - this might change in the future - see MAGNOLIA-2343 for details.</strong>
     *
     * @return the selector value
     */
    public static String getSelector(int index) {
        String[] selectors = MgnlContext.getAggregationState().getSelectors();
        if (selectors.length > index) {
            return selectors[index];
        }
        return null;
    }
}