com.fuerve.villageelder.client.commandline.Main.java Source code

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Here is the source code for com.fuerve.villageelder.client.commandline.Main.java

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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package com.fuerve.villageelder.client.commandline;

import java.util.HashMap;
import java.util.Map;

import org.apache.commons.lang3.ArrayUtils;

import com.fuerve.villageelder.client.commandline.commands.Command;
import com.fuerve.villageelder.client.commandline.commands.Index;
import com.fuerve.villageelder.client.commandline.commands.Version;

/**
 * This class is the entry point for the command line interface
 * to Village Elder.
 * @author lparker
 *
 */
public class Main {
    private static final Map<String, Command> commandMap = new HashMap<String, Command>();

    /**
     * The entry point into the Village Elder command line utility.
     * @param args Command line arguments.
     */
    public static void main(String[] args) {
        setupCommandMap();
        System.exit(run(args));
    }

    /**
     * The entry point into the Village Elder command line utility.
     * @param args Command line arguments.
     */
    public static int run(String[] args) {
        if (args.length < 1) {
            return 1;
        } else {
            final String commandName = args[0];
            final String[] remainingArgs = ArrayUtils.subarray(args, 1, args.length);

            if (commandMap.containsKey(commandName)) {
                final Command command = commandMap.get(commandName);
                command.execute(remainingArgs);
            }
            return 0;
        }
    }

    /**
     * Sets up the command mappings.  If you want to add
     * a command to the collection of supported commands,
     * put it in here.
     */
    private static void setupCommandMap() {
        commandMap.put("version", new Version());
        commandMap.put("index", new Index());
    }
}