games.stendhal.server.script.ListRaids.java Source code

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Here is the source code for games.stendhal.server.script.ListRaids.java

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/* $Id$ */
/***************************************************************************
 *                   (C) Copyright 2003-2010 - Stendhal                    *
 ***************************************************************************
 ***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
package games.stendhal.server.script;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

import org.apache.log4j.Logger;

import com.google.common.collect.ImmutableSet;
import com.google.common.reflect.ClassPath;
import com.google.common.reflect.ClassPath.ClassInfo;

import games.stendhal.server.core.scripting.ScriptImpl;
import games.stendhal.server.entity.player.Player;

/**
 * Lists raid scripts.
 */
public class ListRaids extends ScriptImpl {
    private static Logger logger = Logger.getLogger(ListRaids.class);

    @Override
    public void execute(final Player admin, final List<String> args) {
        StringBuilder textToSend = new StringBuilder("Known RaidScripts:\n");
        try {
            ArrayList<Class<?>> dir = getClasses("games.stendhal.server.script");
            Collections.sort(dir, new Comparator<Class<?>>() {
                @Override
                public int compare(Class<?> o1, Class<?> o2) {
                    return o1.getSimpleName().compareTo(o2.getSimpleName());
                }
            });

            for (final Class<?> clazz : dir) {
                // CreateRaid is abstract and useless for users by itself.
                if (CreateRaid.class.isAssignableFrom(clazz) && (CreateRaid.class != clazz)) {
                    textToSend.append(clazz.getSimpleName()).append("\n");
                }
            }

        } catch (final ClassNotFoundException e) {
            logger.error(e, e);
        } catch (final SecurityException e) {
            logger.error(e, e);
        }
        admin.sendPrivateText(textToSend.toString());
    }

    /**
     * Fetch classes of available scripts.
     * 
     * @param pckgname the package name of scripts
     * @return list of script classes
     * @throws ClassNotFoundException if getting the class loader or reading the
     *    script resources fail
     */
    private static ArrayList<Class<?>> getClasses(final String pckgname) throws ClassNotFoundException {
        final ArrayList<Class<?>> classes = new ArrayList<Class<?>>();
        try {
            ClassLoader classLoader = ListRaids.class.getClassLoader();
            String packageName = "games.stendhal.server.script";
            ImmutableSet<ClassInfo> infos = ClassPath.from(classLoader).getTopLevelClasses(packageName);
            for (ClassInfo info : infos) {
                classes.add(info.load());
            }
            return classes;
        } catch (IOException e) {
            throw new ClassNotFoundException("failed to list classes");
        }
    }
}