/**
 * $Id: colon.java 21 2008-07-04 08:33:47Z daldei $
 * $Date: 2008-07-04 04:33:47 -0400 (Fri, 04 Jul 2008) $
 *
 */

package org.xmlsh.builtin.commands;

import java.util.List;
import javax.xml.stream.XMLStreamWriter;
import org.xmlsh.core.BuiltinCommand;
import org.xmlsh.core.Options;
import org.xmlsh.core.XValue;
import org.xmlsh.core.io.OutputPort;
import org.xmlsh.sh.shell.SerializeOpts;
import org.xmlsh.sh.shell.Version;
import org.xmlsh.sh.shell.Version.Key;

public class xversion extends BuiltinCommand {

  @Override
  public int run(List<XValue> args) throws Exception {

    OutputPort stdout = mShell.getEnv().getStdout();
    Options opts = new Options("key:", SerializeOpts.getOptionDefs());
    opts.parse(args);
    SerializeOpts serializeOpts = getSerializeOpts(opts);
    args = opts.getRemainingArgs();

    Key key = opts.hasOpt("key") ? Key.getKey(opts.getOptStringRequired("key"))
        : (args.isEmpty() ? null : Key.getKey(args.get(0).toString()));

    if(key != null) {
      mShell.printOut(key.get());
      return 0;
    }

    XMLStreamWriter writer = stdout.asXMLStreamWriter(serializeOpts);

    writer.writeStartDocument();

    writer.writeStartElement(getName());
    for(Key k : Version.Key.values())
      writer.writeAttribute(k.getName(), k.get());

    writer.writeEndElement();
    writer.writeEndDocument();
    writer.close();
    stdout.writeSequenceTerminator(serializeOpts);

    return 0;

  }

}
//
//
// 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.
//