Commands.java

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/*
 * This file is part of JXClient, the Fullscreen Java Crossfire Client.
 *
 * JXClient 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.
 *
 * JXClient 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with JXClient; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Copyright (C) 2005-2008 Yann Chachkoff
 * Copyright (C) 2006-2017,2019-2023 Andreas Kirschbaum
 * Copyright (C) 2010-2012,2014-2018,2020-2023 Nicolas Weeger
 */
 
package com.realtime.crossfire.jxclient.commands;
 
import java.util.Collection;
import java.util.Collections;
import java.util.Locale;
import java.util.Map;
import java.util.TreeMap;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
 
public class Commands {
 
    @NotNull
    private final Map<String, Command> commands = new TreeMap<>();
 
    public void addCommand(@NotNull final Command command) {
        if (commands.put(command.getCommandName(), command) != null) {
            throw new IllegalArgumentException("duplicate command: "+command.getCommandName());
        }
    }
 
    @NotNull
    public Collection<String> getCommands() {
        return Collections.unmodifiableCollection(commands.keySet());
    }
 
    @Nullable
    public Command findCommand(@NotNull final String commandName) {
        return commands.get(commandName.toLowerCase(Locale.ENGLISH));
    }
 
}