Example usage for org.apache.commons.cli Options Options

List of usage examples for org.apache.commons.cli Options Options

  1. HOME
  2. Java
  3. org.apache.commons
  4. org.apache.commons.cli.*
  5. Options
  6. Options

Introduction

In this page you can find the example usage for org.apache.commons.cli Options Options.

Prototype

Options

Source Link

Usage

From source file:edu.cmu.lti.oaqa.knn4qa.apps.CollectionSplitter.java

public static void main(String[] args) {
    Options options = new Options();

    options.addOption("i", null, true, "Input file");
    options.addOption("o", null, true, "Output file prefix");
    options.addOption("p", null, true, "Comma separated probabilities e.g., 0.1,0.2,0.7.");
    options.addOption("n", null, true, "Comma separated part names, e.g., dev,test,train");

    CommandLineParser parser = new org.apache.commons.cli.GnuParser();

    try {//from   w w  w  .  j  a va  2 s.com
        CommandLine cmd = parser.parse(options, args);

        InputStream input = null;

        if (cmd.hasOption("i")) {
            input = CompressUtils.createInputStream(cmd.getOptionValue("i"));
        } else {
            Usage("Specify Input file");
        }

        ArrayList<Double> probs = new ArrayList<Double>();
        String[] partNames = null;

        if (cmd.hasOption("p")) {
            String parts[] = cmd.getOptionValue("p").split(",");

            try {
                double sum = 0;
                for (String s : parts) {
                    double p = Double.parseDouble(s);
                    if (p <= 0 || p > 1)
                        Usage("All probabilities must be in the range (0,1)");
                    sum += p;
                    probs.add(p);
                }

                if (Math.abs(sum - 1.0) > Float.MIN_NORMAL) {
                    Usage("The sum of probabilities should be equal to 1, but it's: " + sum);
                }
            } catch (NumberFormatException e) {
                Usage("Can't convert some of the probabilities to a floating-point number.");
            }
        } else {
            Usage("Specify part probabilities.");
        }

        if (cmd.hasOption("n")) {
            partNames = cmd.getOptionValue("n").split(",");

            if (partNames.length != probs.size())
                Usage("The number of probabilities is not equal to the number of parts!");
        } else {
            Usage("Specify part names");
        }

        BufferedWriter[] outFiles = new BufferedWriter[partNames.length];

        if (cmd.hasOption("o")) {
            String outPrefix = cmd.getOptionValue("o");

            for (int partId = 0; partId < partNames.length; ++partId) {
                outFiles[partId] = new BufferedWriter(new OutputStreamWriter(
                        CompressUtils.createOutputStream(outPrefix + "_" + partNames[partId] + ".gz")));
            }
        } else {
            Usage("Specify Output file prefix");
        }

        System.out.println("Using probabilities:");
        for (int partId = 0; partId < partNames.length; ++partId)
            System.out.println(partNames[partId] + " : " + probs.get(partId));
        System.out.println("=================================================");

        XmlIterator inpIter = new XmlIterator(input, YahooAnswersReader.DOCUMENT_TAG);

        String oneRec = inpIter.readNext();
        int docNum = 1;
        for (; !oneRec.isEmpty(); ++docNum, oneRec = inpIter.readNext()) {
            double p = Math.random();

            if (docNum % 1000 == 0) {
                System.out.println(String.format("Processed %d documents", docNum));
            }

            BufferedWriter out = null;

            for (int partId = 0; partId < partNames.length; ++partId) {
                double pp = probs.get(partId);
                if (p <= pp || partId + 1 == partNames.length) {
                    out = outFiles[partId];
                    break;
                }
                p -= pp;
            }

            oneRec = oneRec.trim() + System.getProperty("line.separator");
            out.write(oneRec);
        }
        System.out.println(String.format("Processed %d documents", docNum - 1));
        // It's important to close all the streams here!
        for (BufferedWriter f : outFiles)
            f.close();
    } catch (ParseException e) {
        Usage("Cannot parse arguments");
    } catch (Exception e) {
        System.err.println("Terminating due to an exception: " + e);
        System.exit(1);
    }
}

From source file:cc.twittertools.util.VerifySubcollection.java

@SuppressWarnings("static-access")
public static void main(String[] args) throws Exception {
    Options options = new Options();

    options.addOption(OptionBuilder.withArgName("dir").hasArg().withDescription("source collection directory")
            .create(COLLECTION_OPTION));
    options.addOption(//from   w  ww. j a  va  2s. co m
            OptionBuilder.withArgName("file").hasArg().withDescription("list of tweetids").create(ID_OPTION));

    CommandLine cmdline = null;
    CommandLineParser parser = new GnuParser();
    try {
        cmdline = parser.parse(options, args);
    } catch (ParseException exp) {
        System.err.println("Error parsing command line: " + exp.getMessage());
        System.exit(-1);
    }

    if (!cmdline.hasOption(COLLECTION_OPTION) || !cmdline.hasOption(ID_OPTION)) {
        HelpFormatter formatter = new HelpFormatter();
        formatter.printHelp(ExtractSubcollection.class.getName(), options);
        System.exit(-1);
    }

    String collectionPath = cmdline.getOptionValue(COLLECTION_OPTION);

    LongOpenHashSet tweetids = new LongOpenHashSet();
    File tweetidsFile = new File(cmdline.getOptionValue(ID_OPTION));
    if (!tweetidsFile.exists()) {
        System.err.println("Error: " + tweetidsFile + " does not exist!");
        System.exit(-1);
    }
    LOG.info("Reading tweetids from " + tweetidsFile);

    FileInputStream fin = new FileInputStream(tweetidsFile);
    BufferedReader br = new BufferedReader(new InputStreamReader(fin));

    String s;
    while ((s = br.readLine()) != null) {
        tweetids.add(Long.parseLong(s));
    }
    br.close();
    fin.close();
    LOG.info("Read " + tweetids.size() + " tweetids.");

    File file = new File(collectionPath);
    if (!file.exists()) {
        System.err.println("Error: " + file + " does not exist!");
        System.exit(-1);
    }

    LongOpenHashSet seen = new LongOpenHashSet();
    TreeMap<Long, String> tweets = Maps.newTreeMap();

    PrintStream out = new PrintStream(System.out, true, "UTF-8");
    StatusStream stream = new JsonStatusCorpusReader(file);
    Status status;
    int cnt = 0;
    while ((status = stream.next()) != null) {
        if (!tweetids.contains(status.getId())) {
            LOG.error("tweetid " + status.getId() + " doesn't belong in collection");
            continue;
        }
        if (seen.contains(status.getId())) {
            LOG.error("tweetid " + status.getId() + " already seen!");
            continue;
        }

        tweets.put(status.getId(), status.getJsonObject().toString());
        seen.add(status.getId());
        cnt++;
    }
    LOG.info("total of " + cnt + " tweets in subcollection.");

    for (Map.Entry<Long, String> entry : tweets.entrySet()) {
        out.println(entry.getValue());
    }

    stream.close();
    out.close();
}

From source file:ca.uqac.dim.mapreduce.ltl.LTLValidation.java

/**
 * Program entry point./* w  w w . j a  va2s  . c o m*/
 * @param args Command-line arguments
 */
@SuppressWarnings("static-access")
public static void main(String[] args) {
    // Define and process command line arguments
    Options options = new Options();
    HelpFormatter help_formatter = new HelpFormatter();
    Option opt;
    options.addOption("h", "help", false, "Show help");
    opt = OptionBuilder.withArgName("property").hasArg()
            .withDescription("Property to verify, enclosed in double quotes").create("p");
    options.addOption(opt);
    opt = OptionBuilder.withArgName("filename").hasArg().withDescription("Input filename").create("i");
    options.addOption(opt);
    opt = OptionBuilder.withArgName("x").hasArg()
            .withDescription("Set verbosity level to x (default: 0 = quiet)").create("v");
    options.addOption(opt);
    opt = OptionBuilder.withArgName("ParserType").hasArg().withDescription("Parser type (Dom or Sax)")
            .create("t");
    options.addOption(opt);
    opt = OptionBuilder.withLongOpt("redirection").withArgName("x").hasArg()
            .withDescription("Set the redirection file for the System.out").create("r");
    options.addOption(opt);
    CommandLine c_line = parseCommandLine(options, args);

    String redirectionFile = "";

    //Contains a redirection file for the output
    if (c_line.hasOption("redirection")) {
        try {
            redirectionFile = c_line.getOptionValue("redirection");
            PrintStream ps;
            ps = new PrintStream(redirectionFile);
            System.setOut(ps);
        } catch (FileNotFoundException e) {
            System.out.println("Redirection error !!!");
            e.printStackTrace();
        }
    }

    if (!c_line.hasOption("p") || !c_line.hasOption("i") | c_line.hasOption("h")) {
        help_formatter.printHelp(app_name, options);
        System.exit(1);
    }
    assert c_line.hasOption("p");
    assert c_line.hasOption("i");
    String trace_filename = c_line.getOptionValue("i");
    String trace_format = getExtension(trace_filename);
    String property_str = c_line.getOptionValue("p");
    String ParserType = "";

    if (c_line.hasOption("t")) {
        ParserType = c_line.getOptionValue("t");
    } else {
        System.err.println("No Parser Type in Arguments");
        System.exit(ERR_ARGUMENTS);
    }

    if (c_line.hasOption("v"))
        m_verbosity = Integer.parseInt(c_line.getOptionValue("v"));

    // Obtain the property to verify and break into subformulas
    Operator property = null;
    try {
        int preset = Integer.parseInt(property_str);
        property = new Edoc2012Presets().property(preset);
    } catch (NumberFormatException e) {
        try {
            property = Operator.parseFromString(property_str);
        } catch (Operator.ParseException pe) {
            System.err.println("ERROR: parsing");
            System.exit(1);
        }
    }
    Set<Operator> subformulas = property.getSubformulas();

    // Initialize first collector depending on input file format
    int max_loops = property.getDepth();
    int max_tuples_total = 0, total_tuples_total = 0;
    long time_begin = System.nanoTime();
    TraceCollector initial_collector = null;
    {
        File in_file = new File(trace_filename);
        if (trace_format.compareToIgnoreCase(".txt") == 0) {
            initial_collector = new CharacterTraceCollector(in_file, subformulas);
        } else if (trace_format.compareToIgnoreCase(".xml") == 0) {
            if (ParserType.equals("Dom")) {
                initial_collector = new XmlDomTraceCollector(in_file, subformulas);
            } else if (ParserType.equals("Sax")) {
                initial_collector = new XmlSaxTraceCollector(in_file, subformulas);
            } else {
                initial_collector = new XmlSaxTraceCollector(in_file, subformulas);
            }
        }
    }
    if (initial_collector == null) {
        System.err.println("ERROR: unrecognized input format");
        System.exit(1);
    }

    // Start workflow
    int trace_len = initial_collector.getTraceLength();
    InCollector<Operator, LTLTupleValue> loop_collector = initial_collector;
    print(System.out, property.toString(), 2);
    print(System.out, loop_collector.toString(), 3);
    for (int i = 0; i < max_loops; i++) {
        print(System.out, "Loop " + i, 2);
        LTLSequentialWorkflow w = new LTLSequentialWorkflow(new LTLMapper(subformulas),
                new LTLReducer(subformulas, trace_len), loop_collector);
        loop_collector = w.run();
        max_tuples_total += w.getMaxTuples();
        total_tuples_total += w.getTotalTuples();

        if (m_verbosity >= 3) {
            print(System.out, loop_collector.toString(), 3);
        }

    }
    boolean result = getVerdict(loop_collector, property);
    long time_end = System.nanoTime();
    if (result)
        print(System.out, "Formula is true", 1);
    else
        print(System.out, "Formula is false", 1);

    long time_total = (time_end - time_begin) / 1000000;
    System.out.println(trace_len + "," + max_tuples_total + "," + total_tuples_total + "," + time_total);
}

From source file:com.redhat.poc.jdg.bankofchina.function.TestCase411RemoteMultiThreads.java

public static void main(String[] args) throws Exception {
    CommandLine commandLine;/*from w ww  . j a v  a 2s. co m*/
    Options options = new Options();
    options.addOption("s", true, "The start csv file number option");
    options.addOption("e", true, "The end csv file number option");
    BasicParser parser = new BasicParser();
    parser.parse(options, args);
    commandLine = parser.parse(options, args);
    if (commandLine.getOptions().length > 0) {
        if (commandLine.hasOption("s")) {
            String start = commandLine.getOptionValue("s");
            if (start != null && start.length() > 0) {
                csvFileStart = Integer.parseInt(start);
            }
        }
        if (commandLine.hasOption("e")) {
            String end = commandLine.getOptionValue("e");
            if (end != null && end.length() > 0) {
                csvFileEnd = Integer.parseInt(end);
            }
        }
    }

    System.out.println(
            "%%%%%%%%%  csv ?, ?, ?(ms),"
                    + new Date().getTime());

    for (int i = csvFileStart; i <= csvFileEnd; i++) {
        new TestCase411RemoteMultiThreads(i).start();
    }
}

From source file:com.svds.tailer2kafka.main.Main.java

/**
 * Given command-line arguments, create GenericConsumerGroup
 * /*w  w w . ja v a  2 s. c  om*/
 * @param args  command-line arguments to parse
 * @throws IOException 
 */
public static void main(String[] args) throws IOException, InterruptedException {

    Options options = new Options();

    options.addOption(OptionBuilder.isRequired().withLongOpt(TOPICNAME).withDescription("Kafka topic name")
            .hasArg().create());

    options.addOption(OptionBuilder.isRequired().withLongOpt(METADATABROKERLIST)
            .withDescription("Kafka metadata.broker.list").hasArg().create());

    options.addOption(
            OptionBuilder.isRequired().withLongOpt(FILENAME).withDescription("Log filename").hasArg().create());

    CommandLineParser parser = new BasicParser();
    CommandLine cmd = null;
    try {
        cmd = parser.parse(options, args);

    } catch (ParseException e) {
        LOG.error(e.getMessage(), e);
        HelpFormatter formatter = new HelpFormatter();
        formatter.printHelp("com.svds.tailer2kafka.main.Main", options);

        throw new IOException("Missing Args");
    }

    Main main = new Main();
    main.doWork(cmd);
}

From source file:fr.inria.atlanmod.kyanos.benchmarks.XmiTraverser.java

public static void main(String[] args) {
    Options options = new Options();

    Option inputOpt = OptionBuilder.create(IN);
    inputOpt.setArgName("INPUT");
    inputOpt.setDescription("Input model");
    inputOpt.setArgs(1);//w  ww.j a  v  a 2  s.  c om
    inputOpt.setRequired(true);

    Option inClassOpt = OptionBuilder.create(EPACKAGE_CLASS);
    inClassOpt.setArgName("CLASS");
    inClassOpt.setDescription("FQN of EPackage implementation class");
    inClassOpt.setArgs(1);
    inClassOpt.setRequired(true);

    options.addOption(inputOpt);
    options.addOption(inClassOpt);

    CommandLineParser parser = new PosixParser();

    try {
        CommandLine commandLine = parser.parse(options, args);

        URI uri = URI.createFileURI(commandLine.getOptionValue(IN));

        Class<?> inClazz = XmiTraverser.class.getClassLoader()
                .loadClass(commandLine.getOptionValue(EPACKAGE_CLASS));
        inClazz.getMethod("init").invoke(null);

        ResourceSet resourceSet = new ResourceSetImpl();
        resourceSet.getResourceFactoryRegistry().getExtensionToFactoryMap().put("xmi",
                new XMIResourceFactoryImpl());
        resourceSet.getResourceFactoryRegistry().getExtensionToFactoryMap().put("zxmi",
                new XMIResourceFactoryImpl());

        Resource resource = resourceSet.createResource(uri);

        Map<String, Object> loadOpts = new HashMap<String, Object>();
        resource.load(loadOpts);

        LOG.log(Level.INFO, "Start counting");
        int count = 0;
        long begin = System.currentTimeMillis();
        for (Iterator<EObject> iterator = resource.getAllContents(); iterator.hasNext(); iterator
                .next(), count++)
            ;
        long end = System.currentTimeMillis();
        LOG.log(Level.INFO, "End counting");
        LOG.log(Level.INFO, MessageFormat.format("Resource {0} contains {1} elements", uri, count));
        LOG.log(Level.INFO, MessageFormat.format("Time spent: {0}", MessageUtil.formatMillis(end - begin)));

        resource.unload();

    } catch (ParseException e) {
        MessageUtil.showError(e.toString());
        MessageUtil.showError("Current arguments: " + Arrays.toString(args));
        HelpFormatter formatter = new HelpFormatter();
        formatter.printHelp("java -jar <this-file.jar>", options, true);
    } catch (Throwable e) {
        MessageUtil.showError(e.toString());
    }
}

From source file:com.google.infrastructuredmap.MapAndMarkdownExtractorMain.java

public static void main(String[] args) throws IOException, ParseException {

    Options options = new Options();
    options.addOption(ARG_KML, true, "path to KML input");
    options.addOption(ARG_MARKDOWN, true, "path to Markdown input");
    options.addOption(ARG_JSON_OUTPUT, true, "path to write json output");
    options.addOption(ARG_JSONP, true, "JSONP template to wrap output JSON data");

    CommandLineParser parser = new DefaultParser();
    CommandLine cli = parser.parse(options, args);

    // Extract map features from the input KML.
    MapData data = null;/*from   w  w w  .  j  a  v a2 s. c o m*/
    try (InputStream in = openStream(cli.getOptionValue(ARG_KML))) {
        Kml kml = Kml.unmarshal(in);
        data = MapDataExtractor.extractMapData(kml);
    }

    // Extract project features from the input Markdown.
    Map<String, List<ProjectReference>> references = MarkdownReferenceExtractor
            .extractReferences(Paths.get(cli.getOptionValue(ARG_MARKDOWN)));
    for (MapFeature feature : data.features) {
        List<ProjectReference> referencesForId = references.get(feature.id);
        if (referencesForId == null) {
            throw new IllegalStateException("Unknown project reference: " + feature.id);
        }
        feature.projects = referencesForId;
    }

    // Write the resulting data to the output path.
    Gson gson = new Gson();
    try (FileWriter out = new FileWriter(cli.getOptionValue(ARG_JSON_OUTPUT))) {
        String json = gson.toJson(data);
        if (cli.hasOption(ARG_JSONP)) {
            json = String.format(cli.getOptionValue(ARG_JSONP), json);
        }
        out.write(json);
    }
}

From source file:edu.cmu.lti.oaqa.annographix.apps.SolrIndexApp.java

public static void main(String[] args) {
    Options options = new Options();

    options.addOption("t", null, true, "Text File");
    options.addOption("a", null, true, "Annotation File");
    options.addOption("u", null, true, "Solr URI");
    options.addOption("n", null, true, "Batch size");
    options.addOption(/*from   www.  ja va2 s .  c  o m*/
            OptionBuilder.withLongOpt(TEXT_FIELD_ARG).withDescription("Text field name").hasArg().create());
    options.addOption(OptionBuilder.withLongOpt(ANNOT_FIELD_ARG).withDescription("Annotation field name")
            .hasArg().create());

    CommandLineParser parser = new org.apache.commons.cli.GnuParser();

    try {
        CommandLine cmd = parser.parse(options, args);

        if (cmd.hasOption("t")) {
            docTextFile = cmd.getOptionValue("t");
        } else {
            Usage("Specify Text File");
        }

        if (cmd.hasOption("a")) {
            docAnnotFile = cmd.getOptionValue("a");
        } else {
            Usage("Specify Annotation File");
        }

        if (cmd.hasOption("u")) {
            solrURI = cmd.getOptionValue("u");
        } else {
            Usage("Specify Solr URI");
        }

        if (cmd.hasOption("n")) {
            batchQty = Integer.parseInt(cmd.getOptionValue("n"));
        }

        String textFieldName = UtilConst.DEFAULT_TEXT4ANNOT_FIELD;
        String annotFieldName = UtilConst.DEFAULT_ANNOT_FIELD;

        if (cmd.hasOption(TEXT_FIELD_ARG)) {
            textFieldName = cmd.getOptionValue(TEXT_FIELD_ARG);
        }
        if (cmd.hasOption(ANNOT_FIELD_ARG)) {
            annotFieldName = cmd.getOptionValue(ANNOT_FIELD_ARG);
        }

        System.out.println(String.format("Annotated text field: '%s', annotation field: '%s'", textFieldName,
                annotFieldName));

        // Ignoring return value here
        SolrUtils.parseAndCheckConfig(solrURI, textFieldName, annotFieldName);

        System.out.println("Config is fine!");

        DocumentReader.readDoc(docTextFile, textFieldName, docAnnotFile, batchQty,
                new SolrDocumentIndexer(solrURI, textFieldName, annotFieldName));

    } catch (ParseException e) {
        Usage("Cannot parse arguments");
    } catch (Exception e) {
        System.err.println("Terminating due to an exception: " + e);
        System.exit(1);
    }

}

From source file:bbs.monitor.ListNode.java

public static void main(String[] args) throws Exception {
    boolean printRawForm = false;
    String transport = null;//from   www  . j  a va2 s .c o  m
    String selfAddressAndPort = null;

    // parse command-line arguments
    Options opts = new Options();
    opts.addOption("h", "help", false, "print help");
    opts.addOption("r", "raw", false, "print nodes in the raw form (hostname:port)");
    opts.addOption("t", "transport", true, "transpoft, UDP or TCP");
    opts.addOption("s", "selfipaddress", true, "self IP address (and port)");

    CommandLineParser parser = new PosixParser();
    CommandLine cmd = null;
    try {
        cmd = parser.parse(opts, args);
    } catch (ParseException e) {
        System.out.println("There is an invalid option.");
        e.printStackTrace();
        System.exit(1);
    }

    String optVal;
    if (cmd.hasOption('h')) {
        usage(COMMAND);
        System.exit(1);
    }
    if (cmd.hasOption('r')) {
        printRawForm = true;
    }
    optVal = cmd.getOptionValue('t');
    if (optVal != null) {
        transport = optVal;
    }
    optVal = cmd.getOptionValue('s');
    if (optVal != null) {
        selfAddressAndPort = optVal;
    }

    args = cmd.getArgs();

    // parse initial contact
    String contactHostAndPort = null;
    int contactPort = -1;

    if (args.length < 1) {
        usage(COMMAND);
        System.exit(1);
    }

    contactHostAndPort = args[0];

    if (args.length >= 2)
        contactPort = Integer.parseInt(args[1]);

    //
    // prepare a NodeCollector and invoke it
    //

    // prepare StatConfiguration
    StatConfiguration config = StatFactory.getDefaultConfiguration();
    config.setDoUPnPNATTraversal(false);
    if (transport != null) {
        config.setMessagingTransport(transport);
    }
    if (selfAddressAndPort != null) {
        MessagingUtility.HostAndPort hostAndPort = MessagingUtility.parseHostnameAndPort(selfAddressAndPort,
                config.getSelfPort());

        config.setSelfAddress(hostAndPort.getHostName());
        config.setSelfPort(hostAndPort.getPort());
    }

    // prepare MessageReceiver and initial contact
    MessagingProvider provider = config.deriveMessagingProvider();
    MessageReceiver receiver = config.deriveMessageReceiver(provider);

    MessagingAddress contact;
    try {
        contact = provider.getMessagingAddress(contactHostAndPort, contactPort);
    } catch (IllegalArgumentException e) {
        contact = provider.getMessagingAddress(contactHostAndPort, config.getContactPort());
    }

    // prepare a callback
    NodeCollectorCallback cb;
    if (printRawForm) {
        cb = new NodeCollectorCallback() {
            public void addNode(ID id, MessagingAddress address) {
                System.out.println(new MessagingUtility.HostAndPort(address.getHostname(), address.getPort()));
                // <hostname>:<port>
            }

            public void removeNode(ID id) {
            }
        };
    } else {
        cb = new NodeCollectorCallback() {
            public void addNode(ID id, MessagingAddress address) {
                //System.out.println(HTMLUtil.convertMessagingAddressToURL(address));
                System.out.println("http://" + address.getHostAddress() + ":" + address.getPort() + "/");
                // http://<hostname>:port/
            }

            public void removeNode(ID id) {
            }
        };
    }

    // instantiate and invoke a NodeCollector
    NodeCollector collector = StatFactory.getNodeCollector(config, contact, cb, receiver);

    collector.investigate();

    // stop MessageReceiver to prevent
    // handling incoming messages and submissions to a thread pool
    receiver.stop();
}

From source file:cc.wikitools.lucene.SearchWikipedia.java

@SuppressWarnings("static-access")
public static void main(String[] args) throws Exception {
    Options options = new Options();
    options.addOption(/*from   w  ww .  j a  va  2 s . c o m*/
            OptionBuilder.withArgName("path").hasArg().withDescription("index location").create(INDEX_OPTION));
    options.addOption(
            OptionBuilder.withArgName("string").hasArg().withDescription("query text").create(QUERY_OPTION));
    options.addOption(OptionBuilder.withArgName("num").hasArg().withDescription("number of results to return")
            .create(NUM_RESULTS_OPTION));

    options.addOption(new Option(VERBOSE_OPTION, "print out complete document"));
    options.addOption(new Option(TITLE_OPTION, "search title"));
    options.addOption(new Option(ARTICLE_OPTION, "search article"));

    CommandLine cmdline = null;
    CommandLineParser parser = new GnuParser();
    try {
        cmdline = parser.parse(options, args);
    } catch (ParseException exp) {
        System.err.println("Error parsing command line: " + exp.getMessage());
        System.exit(-1);
    }

    if (!cmdline.hasOption(QUERY_OPTION) || !cmdline.hasOption(INDEX_OPTION)
            || !cmdline.hasOption(QUERY_OPTION)) {
        HelpFormatter formatter = new HelpFormatter();
        formatter.printHelp(SearchWikipedia.class.getName(), options);
        System.exit(-1);
    }

    File indexLocation = new File(cmdline.getOptionValue(INDEX_OPTION));
    if (!indexLocation.exists()) {
        System.err.println("Error: " + indexLocation + " does not exist!");
        System.exit(-1);
    }

    String queryText = cmdline.getOptionValue(QUERY_OPTION);
    int numResults = cmdline.hasOption(NUM_RESULTS_OPTION)
            ? Integer.parseInt(cmdline.getOptionValue(NUM_RESULTS_OPTION))
            : DEFAULT_NUM_RESULTS;
    boolean verbose = cmdline.hasOption(VERBOSE_OPTION);
    boolean searchArticle = !cmdline.hasOption(TITLE_OPTION);

    PrintStream out = new PrintStream(System.out, true, "UTF-8");

    WikipediaSearcher searcher = new WikipediaSearcher(indexLocation);
    TopDocs rs = null;
    if (searchArticle) {
        rs = searcher.searchArticle(queryText, numResults);
    } else {
        rs = searcher.searchTitle(queryText, numResults);
    }

    int i = 1;
    for (ScoreDoc scoreDoc : rs.scoreDocs) {
        Document hit = searcher.doc(scoreDoc.doc);

        out.println(String.format("%d. %s (wiki id = %s, lucene id = %d) %f", i,
                hit.getField(IndexField.TITLE.name).stringValue(),
                hit.getField(IndexField.ID.name).stringValue(), scoreDoc.doc, scoreDoc.score));
        if (verbose) {
            out.println("# " + hit.toString().replaceAll("[\\n\\r]+", " "));
        }
        i++;
    }

    searcher.close();
    out.close();
}