public static  void main(String[] args) throws Exception 
{
        Set flags = new HashSet();
        flags.add("h");
        flags.add("help");
        flags.add("usage");
        flags.add("license");
        flags.add("version");
        CommandLine cl = new CommandLine(args, flags, Arrays.asList(new String[] {"import", "out"}));
        if (cl.getOpt("h") != null || cl.getOpt("help") != null || cl.getOpt("usage") != null || args.length <  1)
        {
            printUsage();
            System.exit(0);
            return;
        }
        String[] badopts = cl.getBadOpts();
        if (badopts.length  > 0)
        {
            for (int i = 0; i <  badopts.length; i++)
                System.out.println("Unrecognized option: " + badopts[i]);
            printUsage();
            System.exit(0);
            return;
        }
        if (cl.getOpt("license") != null)
        {
            CommandLine.printLicense();
            System.exit(0);
            return;
        }
        if (cl.getOpt("version") != null)
        {
            CommandLine.printVersion();
            System.exit(0);
            return;
        }
        args = cl.args();
        if (args.length != 1)
        {
            System.exit(0);
            return;
        }
        String commonName = cl.getOpt("import");
        if (commonName == null)
            commonName = "common.xsd";
        String out = cl.getOpt("out");
        if (out == null)
        {
            System.out.println("Using output directory 'out'");
            out = "out";
        }
        File outdir = new File(out);
        File basedir = new File(args[0]);
        // first, parse all the schema files
        File[] files = cl.getFiles();
        Map schemaDocs = new HashMap();
        Set elementNames = new HashSet();
        Set attributeNames = new HashSet();
        Set typeNames = new HashSet();
        Set modelGroupNames = new HashSet();
        Set attrGroupNames = new HashSet();
        Set dupeElementNames = new HashSet();
        Set dupeAttributeNames = new HashSet();
        Set dupeTypeNames = new HashSet();
        Set dupeModelGroupNames = new HashSet();
        Set dupeAttrGroupNames = new HashSet();
        Set dupeNamespaces = new HashSet();
        for (int i = 0; i <  files.length; i++)
        {
            try
            {
                // load schema
                SchemaDocument doc = SchemaDocument.Factory.parse(files[i]);
                schemaDocs.put(doc, files[i]);
                // warn about for imports, includes
                if (doc.getSchema().sizeOfImportArray()  > 0 || doc.getSchema().sizeOfIncludeArray()  > 0)
                    System.out.println("warning: " + files[i] + " contains imports or includes that are being ignored.");
                // collect together names
                String targetNamespace = doc.getSchema().getTargetNamespace();
                if (targetNamespace == null)
                    targetNamespace = "";
                TopLevelComplexType ct[] = doc.getSchema().getComplexTypeArray();
                for (int j = 0; j <  ct.length; j++)
                    noteName(ct[j].getName(), targetNamespace, typeNames, dupeTypeNames, dupeNamespaces);
                TopLevelSimpleType st[] = doc.getSchema().getSimpleTypeArray();
                for (int j = 0; j <  st.length; j++)
                    noteName(st[j].getName(), targetNamespace, typeNames, dupeTypeNames, dupeNamespaces);
                TopLevelElement el[] = doc.getSchema().getElementArray();
                for (int j = 0; j <  el.length; j++)
                    noteName(el[j].getName(), targetNamespace, elementNames, dupeElementNames, dupeNamespaces);
                TopLevelAttribute at[] = doc.getSchema().getAttributeArray();
                for (int j = 0; j <  at.length; j++)
                    noteName(at[j].getName(), targetNamespace, attributeNames, dupeAttributeNames, dupeNamespaces);
                NamedGroup gr[] = doc.getSchema().getGroupArray();
                for (int j = 0; j <  gr.length; j++)
                    noteName(gr[j].getName(), targetNamespace, modelGroupNames, dupeModelGroupNames, dupeNamespaces);
                NamedAttributeGroup ag[] = doc.getSchema().getAttributeGroupArray();
                for (int j = 0; j <  ag.length; j++)
                    noteName(ag[j].getName(), targetNamespace, attrGroupNames, dupeAttrGroupNames, dupeNamespaces);
            }
            catch (XmlException e)
            {
                System.out.println("warning: " + files[i] + " is not a schema file - " + e.getError().toString());
            }
            catch (IOException e)
            {
                System.err.println("Unable to load " + files[i] + " - " + e.getMessage());
                System.exit(1);
                return;
            }
        }
        if (schemaDocs.size() == 0)
        {
            System.out.println("No schema files found.");
            System.exit(0);
            return;
        }
        if (dupeTypeNames.size() + dupeElementNames.size() + dupeAttributeNames.size() +
                dupeModelGroupNames.size() + dupeAttrGroupNames.size() == 0)
        {
            System.out.println("No duplicate names found.");
            System.exit(0);
            return;
        }
        // create a schema doc for each namespace to be imported
        Map commonDocs = new HashMap();
        Map commonFiles = new HashMap();
        int count = dupeNamespaces.size() == 1 ? 0 : 1;
        for (Iterator i = dupeNamespaces.iterator(); i.hasNext(); )
        {
            String namespace = (String)i.next();
            SchemaDocument commonDoc = SchemaDocument.Factory.parse(
                    "< xs:schema xmlns:xs='http://www.w3.org/2001/XMLSchema'/ >"
            );
            if (namespace.length()  > 0)
                commonDoc.getSchema().setTargetNamespace(namespace);
            commonDoc.getSchema().setElementFormDefault(FormChoice.QUALIFIED);
            commonDocs.put(namespace, commonDoc);
            commonFiles.put(commonDoc, commonFileFor(commonName, namespace, count++, outdir));
        }
        // pull out all the duplicate definitions and drop them into the file
        // we reuse the elementNames (etc) sets to keep track of which definitions
        // we have already inserted.
        for (Iterator i = schemaDocs.keySet().iterator(); i.hasNext(); )
        {
            SchemaDocument doc = (SchemaDocument)i.next();
            // collect together names
            String targetNamespace = doc.getSchema().getTargetNamespace();
            if (targetNamespace == null)
                targetNamespace = "";
            SchemaDocument commonDoc = (SchemaDocument)commonDocs.get(targetNamespace);
            boolean needImport = false;
            TopLevelComplexType ct[] = doc.getSchema().getComplexTypeArray();
            for (int j = ct.length - 1; j  >= 0; j--)
            {
                if (!isDuplicate(ct[j].getName(), targetNamespace, dupeTypeNames))
                    continue;
                if (isFirstDuplicate(ct[j].getName(), targetNamespace, typeNames, dupeTypeNames))
                    commonDoc.getSchema().addNewComplexType().set(ct[j]);
                needImport = true;
                doc.getSchema().removeComplexType(j);
            }
            TopLevelSimpleType st[] = doc.getSchema().getSimpleTypeArray();
            for (int j = 0; j <  st.length; j++)
            {
                if (!isDuplicate(st[j].getName(), targetNamespace, dupeTypeNames))
                    continue;
                if (isFirstDuplicate(st[j].getName(), targetNamespace, typeNames, dupeTypeNames))
                    commonDoc.getSchema().addNewSimpleType().set(st[j]);
                needImport = true;
                doc.getSchema().removeSimpleType(j);
            }
            TopLevelElement el[] = doc.getSchema().getElementArray();
            for (int j = 0; j <  el.length; j++)
            {
                if (!isDuplicate(el[j].getName(), targetNamespace, dupeElementNames))
                    continue;
                if (isFirstDuplicate(el[j].getName(), targetNamespace, elementNames, dupeElementNames))
                    commonDoc.getSchema().addNewElement().set(el[j]);
                needImport = true;
                doc.getSchema().removeElement(j);
            }
            TopLevelAttribute at[] = doc.getSchema().getAttributeArray();
            for (int j = 0; j <  at.length; j++)
            {
                if (!isDuplicate(at[j].getName(), targetNamespace, dupeAttributeNames))
                    continue;
                if (isFirstDuplicate(at[j].getName(), targetNamespace, attributeNames, dupeAttributeNames))
                    commonDoc.getSchema().addNewElement().set(at[j]);
                needImport = true;
                doc.getSchema().removeElement(j);
            }
            NamedGroup gr[] = doc.getSchema().getGroupArray();
            for (int j = 0; j <  gr.length; j++)
            {
                if (!isDuplicate(gr[j].getName(), targetNamespace, dupeModelGroupNames))
                    continue;
                if (isFirstDuplicate(gr[j].getName(), targetNamespace, modelGroupNames, dupeModelGroupNames))
                    commonDoc.getSchema().addNewElement().set(gr[j]);
                needImport = true;
                doc.getSchema().removeElement(j);
            }
            NamedAttributeGroup ag[] = doc.getSchema().getAttributeGroupArray();
            for (int j = 0; j <  ag.length; j++)
            {
                if (!isDuplicate(ag[j].getName(), targetNamespace, dupeAttrGroupNames))
                    continue;
                if (isFirstDuplicate(ag[j].getName(), targetNamespace, attrGroupNames, dupeAttrGroupNames))
                    commonDoc.getSchema().addNewElement().set(ag[j]);
                needImport = true;
                doc.getSchema().removeElement(j);
            }
            if (needImport)
            {
                IncludeDocument.Include newInclude = doc.getSchema().addNewInclude();
                File inputFile = (File)schemaDocs.get(doc);
                File outputFile = outputFileFor(inputFile, basedir, outdir);
                File commonFile = (File)commonFiles.get(commonDoc);
                if (targetNamespace != null)
                    newInclude.setSchemaLocation(relativeURIFor(outputFile, commonFile));
            }
        }
        // make the directory for output
        if (!outdir.isDirectory() && !outdir.mkdirs())
        {
            System.err.println("Unable to makedir " + outdir);
            System.exit(1);
            return;
        }
        // now write all those docs back out.
        for (Iterator i = schemaDocs.keySet().iterator(); i.hasNext(); )
        {
            SchemaDocument doc = (SchemaDocument)i.next();
            File inputFile = (File)schemaDocs.get(doc);
            File outputFile = outputFileFor(inputFile, basedir, outdir);
            if (outputFile == null)
                System.out.println("Cannot copy " + inputFile);
            else
                doc.save(outputFile, new XmlOptions().setSavePrettyPrint().setSaveAggresiveNamespaces());
        }
        for (Iterator i = commonFiles.keySet().iterator(); i.hasNext(); )
        {
            SchemaDocument doc = (SchemaDocument)i.next();
            File outputFile = (File)commonFiles.get(doc);
            doc.save(outputFile, new XmlOptions().setSavePrettyPrint().setSaveAggresiveNamespaces());
        }
}

 public static  void printUsage() 
{
        System.out.println("Refactors a directory of XSD files to remove name conflicts.");
        System.out.println("Usage: sfactor [-import common.xsd] [-out outputdir] inputdir");
        System.out.println("    -import common.xsd - The XSD file to contain redundant ");
        System.out.println("                         definitions for importing.");
        System.out.println("    -out outputdir - The directory into which to place XSD ");
        System.out.println("                     files resulting from refactoring, ");
        System.out.println("                     plus a commonly imported common.xsd.");
        System.out.println("    inputdir - The directory containing the XSD files with");
        System.out.println("               redundant definitions.");
        System.out.println("    -license - Print license information.");
        System.out.println();
}