rngconvert.java

/**
 * $Id: $
 * $Date: $
 *
 */

package org.xmlsh.internal.commands;

import java.util.ArrayList;
import java.util.List;
import org.xml.sax.SAXException;
import org.xmlsh.core.InvalidArgumentException;
import org.xmlsh.core.Options;
import org.xmlsh.core.XCommand;
import org.xmlsh.core.XValue;
import org.xmlsh.sh.shell.ShellConstants;
import org.xmlsh.util.Util;
import com.thaiopensource.relaxng.edit.SchemaCollection;
import com.thaiopensource.relaxng.input.InputFormat;
import com.thaiopensource.relaxng.input.MultiInputFormat;
import com.thaiopensource.relaxng.output.LocalOutputDirectory;
import com.thaiopensource.relaxng.output.OutputDirectory;
import com.thaiopensource.relaxng.output.OutputFormat;
import com.thaiopensource.relaxng.translate.Formats;
import com.thaiopensource.resolver.Resolver;
import com.thaiopensource.resolver.catalog.CatalogResolver;
import com.thaiopensource.xml.sax.ErrorHandlerImpl;

public class rngconvert extends XCommand {

  private final ErrorHandlerImpl eh = new ErrorHandlerImpl();
  private String inputType;
  private String outputType;
  private static final String DEFAULT_OUTPUT_ENCODING = ShellConstants.kENCODING_UTF_8;
  private static final int DEFAULT_LINE_LENGTH = 72;
  private static final int DEFAULT_INDENT = 2;

  @Override
  public int run(List<XValue> args) throws Exception {
    List<String> catalogUris = new ArrayList<String>();
    String[] inputParamArray = null;
    String[] outputParamArray = null;

    Options opts = new Options("C:,I:,O:,i:,o:");
    opts.parse(args);

    if(opts.hasOpt("C"))
      catalogUris.add(getEnv().getShell().getURL(opts.getOptStringRequired("C"))
          .toString());

    inputType = opts.getOptString("I", null);
    outputType = opts.getOptString("O", null);

    if(opts.hasOpt("i")) {
      inputParamArray = Util.toStringArray(opts.getOptValues("i"));

    }
    else
      inputParamArray = new String[0];

    if(opts.hasOpt("o")) {
      outputParamArray = Util.toStringArray(opts.getOptValues("o"));
    }
    else
      outputParamArray = new String[0];

    args = opts.getRemainingArgs();

    if(inputType == null) {
      inputType = extension(args.get(0).toString());
      if(inputType.length() > 0)
        inputType = inputType.substring(1);
    }

    final InputFormat inputFormat = Formats.createInputFormat(inputType);
    if(inputFormat == null)
      throw new InvalidArgumentException(
          "Unrecognized input type: " + inputType);

    String ext = extension(args.get(args.size() - 1).toString());
    if(outputType == null) {
      outputType = ext;
      if(outputType.length() > 0)
        outputType = outputType.substring(1);
    }
    final OutputFormat outputFormat = Formats.createOutputFormat(outputType);
    if(outputFormat == null)
      throw new InvalidArgumentException(
          "Unrecognized output type: " + outputType);

    Resolver resolver;
    if(catalogUris.isEmpty())
      resolver = null;
    else {
      resolver = new CatalogResolver(catalogUris);
    }

    outputType = outputType.toLowerCase();
    SchemaCollection sc;
    if(args.size() > 2) {
      if(!(inputFormat instanceof MultiInputFormat)) {
        throw new InvalidArgumentException("Too many arguments");
      }
      String[] uris = new String[args.size() - 1];
      for(int i = 0; i < uris.length; i++)
        uris[i] = getAbsoluteURI(args.get(i).toString());

      sc = ((MultiInputFormat) inputFormat).load(uris, inputParamArray,
          outputType, eh, resolver);
    }
    else
      sc = inputFormat.load(getAbsoluteURI(args.get(0).toString()),
          inputParamArray, outputType, eh, resolver);
    if(ext.length() == 0)
      ext = outputType;
    OutputDirectory od = new LocalOutputDirectory(sc.getMainUri(),
        getFile(args.get(args.size() - 1)),
        ext,
        DEFAULT_OUTPUT_ENCODING,
        DEFAULT_LINE_LENGTH,
        DEFAULT_INDENT);
    outputFormat.output(sc, od, outputParamArray, inputType.toLowerCase(), eh);
    return 0;

  }

  private void error(String message) {
    eh.printException(new SAXException(message));
  }

  static private String extension(String s) {
    int dot = s.lastIndexOf(".");
    if(dot < 0)
      return "";
    return s.substring(dot);
  }

}

//
//
// Copyright (C) 2008-2014 David A. Lee.
//
// The contents of this file are subject to the "Simplified BSD License" (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.opensource.org/licenses/bsd-license.php
//
// Software distributed under the License is distributed on an "AS IS" basis,
// WITHOUT WARRANTY OF ANY KIND, either express or implied.
// See the License for the specific language governing rights and limitations
// under the License.
//
// The Original Code is: all this file.
//
// The Initial Developer of the Original Code is David A. Lee
//
// Portions created by (your name) are Copyright (C) (your legal entity). All
// Rights Reserved.
//
// Contributor(s): none.
//