package org.apache.maven.plugin.antrun;

 /*

  * Licensed to the Apache Software Foundation (ASF) under one

  * or more contributor license agreements.  See the NOTICE file

  * distributed with this work for additional information

  * regarding copyright ownership.  The ASF licenses this file

  * to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing,

  * software distributed under the License is distributed on an

  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

  * KIND, either express or implied.  See the License for the

  * specific language governing permissions and limitations

  * under the License.

  */

 import org.codehaus.plexus.configuration.PlexusConfiguration;

 import org.codehaus.plexus.util.xml.PrettyPrintXMLWriter;

 import org.codehaus.plexus.util.xml.XMLWriter;

 import java.io.IOException;

 import java.io.Writer;

 /**

  * Write a plexus configuration to a stream

  * Note: This class was originally copied from plexus-container-default.  It is duplicated here

  * to maintain compatibility with both Maven 2.x and Maven 3.x.

  *

  */

 public class AntrunXmlPlexusConfigurationWriter

 {

     public void write( PlexusConfiguration configuration, Writer writer )

         throws IOException

     {

         int depth = 0;

         PrettyPrintXMLWriter xmlWriter = new PrettyPrintXMLWriter( writer );

         write( configuration, xmlWriter, depth );

     }

     private void write( PlexusConfiguration c, XMLWriter w, int depth )

         throws IOException

     {

         int count = c.getChildCount();

         if ( count == 0 )

         {

             writeTag( c, w, depth );

         }

         else

         {

             w.startElement( c.getName() );

             writeAttributes( c, w );

             for ( int i = 0; i < count; i++ )

             {

                 PlexusConfiguration child = c.getChild( i );

                 write( child, w, depth + 1 );

             }

             w.endElement();

         }

     }

     private void writeTag( PlexusConfiguration c, XMLWriter w, int depth )

         throws IOException

     {

         w.startElement( c.getName() );

         writeAttributes( c, w );

         String value = c.getValue( null );

         if ( value != null )

         {

             w.writeText( value );

         }

         w.endElement();

     }

     private void writeAttributes( PlexusConfiguration c, XMLWriter w )

         throws IOException

     {

         String[] names = c.getAttributeNames();

         for ( int i = 0; i < names.length; i++ )

         {

             w.addAttribute( names[i], c.getAttribute( names[i], null ) );

         }

     }

 }