info.bitoo.Main.java Source code

Introduction

Here is the source code for info.bitoo.Main.java

Source

/*
 * Copyright (c) 2004 Fabio Di Fabio
 * All rights reserved.
 * 
 * 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.
 *
 * This program 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 this program; if not, write to the Free Software Foundation, Inc., 675
 * Mass Ave, Cambridge, MA 02139, USA.
 */
package info.bitoo;

import info.bitoo.clientadapters.ClientAdapterException;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URL;
import java.security.NoSuchAlgorithmException;
import java.util.Properties;

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.OptionGroup;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.commons.cli.PosixParser;
import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;

public final class Main {
    private final static Logger logger = Logger.getLogger(Main.class.getName());

    public static final String defaultConfigFilename = "bitoo.properties";

    public static void main(String[] args)
            throws InterruptedException, IOException, NoSuchAlgorithmException, ClientAdapterException {
        CommandLineParser parser = new PosixParser();
        CommandLine cmd = null;
        try {
            cmd = parser.parse(createCommandLineOptions(), args);
        } catch (ParseException e) {
            System.err.println("Parsing failed.  Reason: " + e.getMessage());
        }

        Properties props = readConfiguration(cmd);
        BiToo biToo = new BiToo(props);

        URL torrentURL = null;

        if (cmd.hasOption("f")) {
            String parmValue = cmd.getOptionValue("f");
            String torrentName = parmValue + ".torrent";
            biToo.setTorrent(torrentName);
        } else if (cmd.hasOption("t")) {
            torrentURL = new URL(cmd.getOptionValue("t"));
            biToo.setTorrent(torrentURL);
        } else {
            return;
        }

        try {
            Thread main = new Thread(biToo);
            main.setName("BiToo");
            main.start();

            //wait until thread complete
            main.join();
        } finally {
            biToo.destroy();
        }

        if (biToo.isCompleted()) {
            System.out.println("Download completed");
            System.exit(0);
        } else {
            System.out.println("Download failed");
            System.exit(1);
        }

    }

    static Properties readConfiguration(CommandLine cmd) {
        /*
         * Read configuration file
         */
        String configFilename = defaultConfigFilename;
        if (cmd.hasOption("c")) {
            configFilename = cmd.getOptionValue("c");
        }

        Properties props = new Properties();
        try {
            FileInputStream fis = new FileInputStream(configFilename);
            props.load(fis);
            fis.close();
            PropertyConfigurator.configure(props);
            logger.debug("Log4j initialized");
        } catch (FileNotFoundException e) {
            System.out.println("Configuration file not found: [" + configFilename + "]");
            e.printStackTrace();
        } catch (IOException e) {
            System.out.println("Bad configuration file: [" + configFilename + "]");
            e.printStackTrace();
        }
        return props;
    }

    private static Options createCommandLineOptions() {
        Option optConfig = new Option("c", "config", true, "configuration file location");

        Option optTorrent = new Option("t", "torrent", true, "a .torrent file to download");
        optTorrent.setRequired(true);

        Option optFile = new Option("f", "file", true, "a file to download on the specified tracker");
        optTorrent.setRequired(true);

        OptionGroup optionGroup = new OptionGroup();
        optionGroup.addOption(optTorrent).addOption(optFile);

        Options cliOptions = new Options();
        cliOptions.addOption(optConfig);
        cliOptions.addOptionGroup(optionGroup);

        return cliOptions;
    }

}