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

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

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

Prototype

GnuParser

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Usage

From source file:de.uni_koblenz.west.splendid.tools.NQuadSourceAggregator.java

public static void main(String[] args) {

    try {/*  w  w w . j a  v  a2 s  .c o m*/
        // parse the command line arguments
        CommandLineParser parser = new GnuParser();
        CommandLine cmd = parser.parse(OPTIONS, args);

        // print help message
        if (cmd.hasOption("h") || cmd.hasOption("help")) {
            new HelpFormatter().printHelp(USAGE, OPTIONS);
            System.exit(0);
        }

        // get input files (from option -i or all remaining parameters)
        String[] inputFiles = cmd.getOptionValues("i");
        if (inputFiles == null)
            inputFiles = cmd.getArgs();
        if (inputFiles.length == 0) {
            System.out.println("need at least one input file.");
            new HelpFormatter().printUsage(new PrintWriter(System.out, true), 80, USAGE);
            System.exit(1);
        }
        String outputFile = cmd.getOptionValue("o");

        // process all input files
        new NQuadSourceAggregator().process(outputFile, inputFiles);

    } catch (ParseException exp) {
        // print parse error and display usage message
        System.out.println(exp.getMessage());
        new HelpFormatter().printUsage(new PrintWriter(System.out, true), 80, USAGE, OPTIONS);
    }
}

From source file:com.linkedin.restli.tools.snapshot.gen.RestLiSnapshotExporterCmdLineApp.java

/**
 * @param args restliexporter -sourcepath sourcepath -resourcepackages packagenames [-name api_name] [-outdir outdir]
 *///from  w  w w. ja va2 s. c om
public static void main(String[] args) {
    CommandLine cl = null;
    try {
        final CommandLineParser parser = new GnuParser();
        cl = parser.parse(OPTIONS, args);
    } catch (ParseException e) {
        System.err.println("Invalid arguments: " + e.getMessage());
        final HelpFormatter formatter = new HelpFormatter();
        formatter.printHelp(
                "restliexporter -sourcepath sourcepath [-resourcepackages packagenames] [-resourceclasses classnames]"
                        + "[-name api_name] [-outdir outdir]",
                OPTIONS);
        System.exit(0);
    }

    final String resolverPath = System.getProperty(AbstractGenerator.GENERATOR_RESOLVER_PATH);

    try {
        final RestLiSnapshotExporter exporter = new RestLiSnapshotExporter();
        exporter.setResolverPath(resolverPath);
        exporter.export(cl.getOptionValue("name"), null, cl.getOptionValues("sourcepath"),
                cl.getOptionValues("resourcepackages"), cl.getOptionValues("resourceClasses"),
                cl.getOptionValue("outdir", "."),
                AdditionalDocProvidersUtil.findDocProviders(log, cl.hasOption("loadAdditionalDocProviders")));
    } catch (Throwable e) {
        log.error("Error writing Snapshot files", e);
        System.out.println("Error writing Snapshot files:\n" + e);
        System.exit(1);
    }
}

From source file:cc.twittertools.search.local.RunQueries.java

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

    options.addOption(/*from   w  w w. j a v  a  2  s  .co m*/
            OptionBuilder.withArgName("path").hasArg().withDescription("index location").create(INDEX_OPTION));
    options.addOption(OptionBuilder.withArgName("num").hasArg().withDescription("number of results to return")
            .create(NUM_RESULTS_OPTION));
    options.addOption(OptionBuilder.withArgName("file").hasArg()
            .withDescription("file containing topics in TREC format").create(QUERIES_OPTION));
    options.addOption(OptionBuilder.withArgName("similarity").hasArg()
            .withDescription("similarity to use (BM25, LM)").create(SIMILARITY_OPTION));
    options.addOption(
            OptionBuilder.withArgName("string").hasArg().withDescription("runtag").create(RUNTAG_OPTION));
    options.addOption(new Option(VERBOSE_OPTION, "print out complete document"));

    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(QUERIES_OPTION) || !cmdline.hasOption(INDEX_OPTION)) {
        HelpFormatter formatter = new HelpFormatter();
        formatter.printHelp(RunQueries.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 runtag = cmdline.hasOption(RUNTAG_OPTION) ? cmdline.getOptionValue(RUNTAG_OPTION) : DEFAULT_RUNTAG;

    String topicsFile = cmdline.getOptionValue(QUERIES_OPTION);

    int numResults = 1000;
    try {
        if (cmdline.hasOption(NUM_RESULTS_OPTION)) {
            numResults = Integer.parseInt(cmdline.getOptionValue(NUM_RESULTS_OPTION));
        }
    } catch (NumberFormatException e) {
        System.err.println("Invalid " + NUM_RESULTS_OPTION + ": " + cmdline.getOptionValue(NUM_RESULTS_OPTION));
        System.exit(-1);
    }

    String similarity = "LM";
    if (cmdline.hasOption(SIMILARITY_OPTION)) {
        similarity = cmdline.getOptionValue(SIMILARITY_OPTION);
    }

    boolean verbose = cmdline.hasOption(VERBOSE_OPTION);

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

    IndexReader reader = DirectoryReader.open(FSDirectory.open(indexLocation));
    IndexSearcher searcher = new IndexSearcher(reader);

    if (similarity.equalsIgnoreCase("BM25")) {
        searcher.setSimilarity(new BM25Similarity());
    } else if (similarity.equalsIgnoreCase("LM")) {
        searcher.setSimilarity(new LMDirichletSimilarity(2500.0f));
    }

    QueryParser p = new QueryParser(Version.LUCENE_43, StatusField.TEXT.name, IndexStatuses.ANALYZER);

    TrecTopicSet topics = TrecTopicSet.fromFile(new File(topicsFile));
    for (TrecTopic topic : topics) {
        Query query = p.parse(topic.getQuery());
        Filter filter = NumericRangeFilter.newLongRange(StatusField.ID.name, 0L, topic.getQueryTweetTime(),
                true, true);

        TopDocs rs = searcher.search(query, filter, numResults);

        int i = 1;
        for (ScoreDoc scoreDoc : rs.scoreDocs) {
            Document hit = searcher.doc(scoreDoc.doc);
            out.println(String.format("%s Q0 %s %d %f %s", topic.getId(),
                    hit.getField(StatusField.ID.name).numericValue(), i, scoreDoc.score, runtag));
            if (verbose) {
                out.println("# " + hit.toString().replaceAll("[\\n\\r]+", " "));
            }
            i++;
        }
    }
    reader.close();
    out.close();
}

From source file:de.topobyte.osm4j.pbf.executables.EntitySplitBlockwise.java

public static void main(String[] args) throws IOException {
    // @formatter:off
    Options options = new Options();
    OptionHelper.add(options, OPTION_INPUT, true, true, "input file");
    OptionHelper.add(options, OPTION_OUTPUT_NODES, true, false, "the file to write nodes to");
    OptionHelper.add(options, OPTION_OUTPUT_WAYS, true, false, "the file to write ways to");
    OptionHelper.add(options, OPTION_OUTPUT_RELATIONS, true, false, "the file to write relations to");
    // @formatter:on

    CommandLine line = null;/* w  w  w  .  jav  a 2 s  . co m*/
    try {
        line = new GnuParser().parse(options, args);
    } catch (ParseException e) {
        System.out.println("unable to parse command line: " + e.getMessage());
        new HelpFormatter().printHelp(HELP_MESSAGE, options);
        System.exit(1);
    }

    if (line == null) {
        return;
    }

    String inputPath = line.getOptionValue(OPTION_INPUT);
    File file = new File(inputPath);
    PbfFile pbfFile = new PbfFile(file);

    OutputStream outNodes = null, outWays = null, outRelations = null;
    if (line.hasOption(OPTION_OUTPUT_NODES)) {
        String path = line.getOptionValue(OPTION_OUTPUT_NODES);
        FileOutputStream fos = new FileOutputStream(path);
        outNodes = new BufferedOutputStream(fos);
    }
    if (line.hasOption(OPTION_OUTPUT_WAYS)) {
        String path = line.getOptionValue(OPTION_OUTPUT_WAYS);
        FileOutputStream fos = new FileOutputStream(path);
        outWays = new BufferedOutputStream(fos);
    }
    if (line.hasOption(OPTION_OUTPUT_RELATIONS)) {
        String path = line.getOptionValue(OPTION_OUTPUT_RELATIONS);
        FileOutputStream fos = new FileOutputStream(path);
        outRelations = new BufferedOutputStream(fos);
    }

    if (outNodes == null && outWays == null && outRelations == null) {
        System.out.println("You should specify an output for at least one entity");
        System.exit(1);
    }

    EntitySplitBlockwise task = new EntitySplitBlockwise(pbfFile, outNodes, outWays, outRelations);
    task.execute();
}

From source file:de.tudarmstadt.lt.lm.app.GenerateNgrams.java

@SuppressWarnings("static-access")
public static void main(String[] args) {
    Options opts = new Options();
    opts.addOption(OptionBuilder.withLongOpt("help").withDescription("Display help message.").create("?"));
    opts.addOption(OptionBuilder.withLongOpt("ptype").withArgName("class").hasArg().withDescription(
            "specify the instance of the language model provider that you want to use: {LtSegProvider, BreakIteratorStringProvider, UimaStringProvider, PreTokenizedStringProvider} (default: LtSegProvider)")
            .create("p"));
    opts.addOption(OptionBuilder.withLongOpt("cardinality").withArgName("ngram-order").hasArg().withDescription(
            "Specify the cardinality of the ngrams (min. 1). Specify a range using 'from-to'. (Examples: 5 = extract 5grams; 1-5 = extract 1grams, 2grams, ..., 5grams; default: 1-5).")
            .create("n"));
    opts.addOption(OptionBuilder.withLongOpt("dir").withArgName("directory").isRequired().hasArg()
            .withDescription(// www  . j  av  a  2 s.  c o  m
                    "specify the directory that contains '.txt' files that are used as source for generating ngrams.")
            .create("d"));
    opts.addOption(OptionBuilder.withLongOpt("overwrite").withDescription("Overwrite existing ngram file.")
            .create("w"));

    CommandLine cli = null;
    try {
        cli = new GnuParser().parse(opts, args);
    } catch (Exception e) {
        print_usage(opts, e.getMessage());
    }
    if (cli.hasOption("?"))
        print_usage(opts, null);

    AbstractStringProvider prvdr = null;
    try {
        prvdr = StartLM
                .getStringProviderInstance(cli.getOptionValue("ptype", LtSegProvider.class.getSimpleName()));
    } catch (Exception e) {
        print_usage(opts, String.format("Could not instantiate LmProvider '%s': %s",
                cli.getOptionValue("ptype", LtSegProvider.class.getSimpleName()), e.getMessage()));
    }

    String n_ = cli.getOptionValue("cardinality", "1-5");
    int dash_index = n_.indexOf('-');
    int n_e = Integer.parseInt(n_.substring(dash_index + 1, n_.length()).trim());
    int n_b = n_e;
    if (dash_index == 0)
        n_b = 1;
    if (dash_index > 0)
        n_b = Math.max(1, Integer.parseInt(n_.substring(0, dash_index).trim()));

    final File src_dir = new File(cli.getOptionValue("dir"));
    boolean overwrite = Boolean.parseBoolean(cli.getOptionValue("overwrite", "false"));

    generateNgrams(src_dir, prvdr, n_b, n_e, overwrite);

}

From source file:io.anserini.search.SearchTweets.java

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

    options.addOption(new Option(RM3_OPTION, "apply relevance feedback with rm3"));

    options.addOption(//  w  ww .java  2  s .  c  o  m
            OptionBuilder.withArgName("path").hasArg().withDescription("index location").create(INDEX_OPTION));
    options.addOption(OptionBuilder.withArgName("num").hasArg().withDescription("number of results to return")
            .create(NUM_RESULTS_OPTION));
    options.addOption(OptionBuilder.withArgName("file").hasArg()
            .withDescription("file containing topics in TREC format").create(QUERIES_OPTION));
    options.addOption(OptionBuilder.withArgName("similarity").hasArg()
            .withDescription("similarity to use (BM25, LM)").create(SIMILARITY_OPTION));
    options.addOption(
            OptionBuilder.withArgName("string").hasArg().withDescription("runtag").create(RUNTAG_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(QUERIES_OPTION) || !cmdline.hasOption(INDEX_OPTION)) {
        HelpFormatter formatter = new HelpFormatter();
        formatter.printHelp(SearchTweets.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 runtag = cmdline.hasOption(RUNTAG_OPTION) ? cmdline.getOptionValue(RUNTAG_OPTION) : DEFAULT_RUNTAG;

    String topicsFile = cmdline.getOptionValue(QUERIES_OPTION);

    int numResults = 1000;
    try {
        if (cmdline.hasOption(NUM_RESULTS_OPTION)) {
            numResults = Integer.parseInt(cmdline.getOptionValue(NUM_RESULTS_OPTION));
        }
    } catch (NumberFormatException e) {
        System.err.println("Invalid " + NUM_RESULTS_OPTION + ": " + cmdline.getOptionValue(NUM_RESULTS_OPTION));
        System.exit(-1);
    }

    String similarity = "LM";
    if (cmdline.hasOption(SIMILARITY_OPTION)) {
        similarity = cmdline.getOptionValue(SIMILARITY_OPTION);
    }

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

    IndexReader reader = DirectoryReader.open(FSDirectory.open(Paths.get(indexLocation.getAbsolutePath())));
    IndexSearcher searcher = new IndexSearcher(reader);

    if (similarity.equalsIgnoreCase("BM25")) {
        searcher.setSimilarity(new BM25Similarity());
    } else if (similarity.equalsIgnoreCase("LM")) {
        searcher.setSimilarity(new LMDirichletSimilarity(2500.0f));
    }

    MicroblogTopicSet topics = MicroblogTopicSet.fromFile(new File(topicsFile));
    for (MicroblogTopic topic : topics) {
        Filter filter = NumericRangeFilter.newLongRange(StatusField.ID.name, 0L, topic.getQueryTweetTime(),
                true, true);
        Query query = AnalyzerUtils.buildBagOfWordsQuery(StatusField.TEXT.name, IndexTweets.ANALYZER,
                topic.getQuery());

        TopDocs rs = searcher.search(query, filter, numResults);

        RerankerContext context = new RerankerContext(searcher, query, topic.getQuery(), filter);
        RerankerCascade cascade = new RerankerCascade(context);

        if (cmdline.hasOption(RM3_OPTION)) {
            cascade.add(new Rm3Reranker(IndexTweets.ANALYZER, StatusField.TEXT.name));
            cascade.add(new RemoveRetweetsTemporalTiebreakReranker());
        } else {
            cascade.add(new RemoveRetweetsTemporalTiebreakReranker());
        }

        ScoredDocuments docs = cascade.run(ScoredDocuments.fromTopDocs(rs, searcher));

        for (int i = 0; i < docs.documents.length; i++) {
            String qid = topic.getId().replaceFirst("^MB0*", "");
            out.println(String.format("%s Q0 %s %d %f %s", qid,
                    docs.documents[i].getField(StatusField.ID.name).numericValue(), (i + 1), docs.scores[i],
                    runtag));
        }
    }
    reader.close();
    out.close();
}

From source file:apps.classification.ClassifySVMPerf.java

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

    boolean dumpConfidences = false;

    String cmdLineSyntax = ClassifySVMPerf.class.getName()
            + " [OPTIONS] <path to svm_perf_classify> <testIndexDirectory> <modelDirectory>";

    Options options = new Options();

    OptionBuilder.withArgName("d");
    OptionBuilder.withDescription("Dump confidences file");
    OptionBuilder.withLongOpt("d");
    OptionBuilder.isRequired(false);/* w ww.jav  a 2 s  .c  o m*/
    OptionBuilder.hasArg(false);
    options.addOption(OptionBuilder.create());

    OptionBuilder.withArgName("t");
    OptionBuilder.withDescription("Path for temporary files");
    OptionBuilder.withLongOpt("t");
    OptionBuilder.isRequired(false);
    OptionBuilder.hasArg();
    options.addOption(OptionBuilder.create());

    OptionBuilder.withArgName("v");
    OptionBuilder.withDescription("Verbose output");
    OptionBuilder.withLongOpt("v");
    OptionBuilder.isRequired(false);
    OptionBuilder.hasArg(false);
    options.addOption(OptionBuilder.create());

    OptionBuilder.withArgName("s");
    OptionBuilder.withDescription("Don't delete temporary training file in svm_perf format (default: delete)");
    OptionBuilder.withLongOpt("s");
    OptionBuilder.isRequired(false);
    OptionBuilder.hasArg(false);
    options.addOption(OptionBuilder.create());

    SvmPerfClassifierCustomizer customizer = null;

    GnuParser parser = new GnuParser();
    String[] remainingArgs = null;
    try {
        CommandLine line = parser.parse(options, args);

        remainingArgs = line.getArgs();

        customizer = new SvmPerfClassifierCustomizer(remainingArgs[0]);

        if (line.hasOption("d"))
            dumpConfidences = true;

        if (line.hasOption("v"))
            customizer.printSvmPerfOutput(true);

        if (line.hasOption("s")) {
            customizer.setDeleteTestFiles(false);
            customizer.setDeletePredictionsFiles(false);
        }

        if (line.hasOption("t"))
            customizer.setTempPath(line.getOptionValue("t"));

    } catch (Exception exp) {
        System.err.println("Parsing failed.  Reason: " + exp.getMessage());
        HelpFormatter formatter = new HelpFormatter();
        formatter.printHelp(cmdLineSyntax, options);
        System.exit(-1);
    }

    if (remainingArgs.length != 3) {
        HelpFormatter formatter = new HelpFormatter();
        formatter.printHelp(cmdLineSyntax, options);
        System.exit(-1);
    }

    String testFile = remainingArgs[1];

    File file = new File(testFile);

    String testName = file.getName();
    String testPath = file.getParent();

    String classifierFile = remainingArgs[2];

    file = new File(classifierFile);

    String classifierName = file.getName();
    String classifierPath = file.getParent();
    FileSystemStorageManager storageManager = new FileSystemStorageManager(testPath, false);
    storageManager.open();
    IIndex test = TroveReadWriteHelper.readIndex(storageManager, testName, TroveContentDBType.Full,
            TroveClassificationDBType.Full);
    storageManager.close();

    SvmPerfDataManager dataManager = new SvmPerfDataManager(customizer);
    storageManager = new FileSystemStorageManager(classifierPath, false);
    storageManager.open();
    SvmPerfClassifier classifier = (SvmPerfClassifier) dataManager.read(storageManager, classifierName);
    storageManager.close();

    classifier.setRuntimeCustomizer(customizer);

    // CLASSIFICATION
    String classificationName = testName + "_" + classifierName;

    Classifier classifierModule = new Classifier(test, classifier, dumpConfidences);
    classifierModule.setClassificationMode(ClassificationMode.PER_CATEGORY);
    classifierModule.exec();

    IClassificationDB testClassification = classifierModule.getClassificationDB();

    storageManager = new FileSystemStorageManager(testPath, false);
    storageManager.open();
    TroveReadWriteHelper.writeClassification(storageManager, testClassification, classificationName + ".cla",
            true);
    storageManager.close();

    if (dumpConfidences) {
        ClassificationScoreDB confidences = classifierModule.getConfidences();
        ClassificationScoreDB.write(testPath + Os.pathSeparator() + classificationName + ".confidences",
                confidences);
    }
}

From source file:com.evolveum.midpoint.tools.ninja.Main.java

public static void main(String[] args) {
    Options options = new Options();
    options.addOption(help);//from w w w . j  a  v a 2  s.c  o m
    options.addOption(validate);
    options.addOption(create);
    options.addOption(importOp);
    options.addOption(schemaOp);
    options.addOption(exportOp);
    options.addOption(driver);
    options.addOption(url);
    options.addOption(username);
    options.addOption(password);
    options.addOption(Password);
    options.addOption(keyStore);
    options.addOption(trans);
    options.addOption(outputFormat);
    options.addOption(outputDirectory);
    options.addOption(input);

    try {
        CommandLineParser parser = new GnuParser();
        CommandLine line = parser.parse(options, args);
        if (line.getOptions().length == 0 || line.hasOption(help.getOpt())) {
            printHelp(options);
            return;
        }

        //repository validation, if proper option is present
        boolean valid = validate(line, options);
        //import DDL, if proper option is present
        if (line.hasOption(create.getOpt())) {
            ImportDDL ddl = new ImportDDL(createDDLConfig(line));
            if (!ddl.execute()) {
                System.out.println("DLL import was unsuccessful, skipping other steps.");
                return;
            }

            //repository validation after DDL import, if proper option is present
            valid = validate(line, options);
        }

        //import objects, only if repository validation didn't fail (in case it was tested)
        if (valid && line.hasOption(importOp.getOpt())) {
            String path = line.getOptionValue(importOp.getOpt());
            boolean validateSchema = line.hasOption(schemaOp.getOpt());
            ImportObjects objects = new ImportObjects(path, validateSchema);
            objects.execute();
        }

        if (valid && line.hasOption(exportOp.getOpt())) {
            String path = line.getOptionValue(exportOp.getOpt());
            ExportObjects objects = new ExportObjects(path);
            objects.execute();
        }

        if (line.hasOption(keyStore.getOpt())) {
            KeyStoreDumper keyStoreDumper = new KeyStoreDumper();
            keyStoreDumper.execute();
        }

        if (line.hasOption(trans.getOpt())) {
            if (!checkCommand(line)) {
                return;
            }
            FileTransformer transformer = new FileTransformer();
            configureTransformer(transformer, line);
            transformer.execute();
        }
    } catch (ParseException ex) {
        System.out.println("Error: " + ex.getMessage());
        printHelp(options);
    } catch (Exception ex) {
        System.out.println("Exception occurred, reason: " + ex.getMessage());
        ex.printStackTrace();
    }
}

From source file:is.iclt.icenlp.runner.RunLemmald.java

public static void main(String[] args) {

    CommandLineParser parser = new GnuParser();
    try {/*w  ww  . ja v a 2 s. c o m*/
        // parse the command line arguments
        CommandLine cmdLine = parser.parse(options, args);
        if (cmdLine.hasOption("h")) {
            HelpFormatter formatter = new HelpFormatter();
            formatter.printHelp("lemmatize.sh", options);
        } else {
            runConsole(cmdLine);
        }
    } catch (ParseException exp) {
        // oops, something went wrong
        System.err.println("Could not parse command line arguments.  Reason: " + exp.getMessage());
    }

}

From source file:de.uni_koblenz.west.splendid.tools.NXVoidGenerator.java

public static void main(String[] args) {

    try {/*from w w  w.  j av  a  2 s. c o  m*/
        // parse the command line arguments
        CommandLineParser parser = new GnuParser();
        CommandLine cmd = parser.parse(OPTIONS, args);

        // print help message
        if (cmd.hasOption("h") || cmd.hasOption("help")) {
            new HelpFormatter().printHelp(USAGE, OPTIONS);
            System.exit(0);
        }

        // get input files (from option -i or all remaining parameters)
        String[] inputFiles = cmd.getOptionValues("i");
        if (inputFiles == null)
            inputFiles = cmd.getArgs();
        if (inputFiles.length == 0) {
            System.out.println("need at least one input file.");
            new HelpFormatter().printUsage(new PrintWriter(System.out, true), 80, USAGE);
            System.exit(1);
        }
        String outputFile = cmd.getOptionValue("o");

        // process all input files
        new NXVoidGenerator().process(outputFile, inputFiles);

    } catch (ParseException exp) {
        // print parse error and display usage message
        System.out.println(exp.getMessage());
        new HelpFormatter().printUsage(new PrintWriter(System.out, true), 80, USAGE, OPTIONS);
    }
}