package org.apache.maven.wagon.providers.webdav;

 /*

  * 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.util.StringUtils;

 import java.util.List;

 import java.util.Arrays;

 /**

  * @author <a href="mailto:james@atlassian.com">James William Dumay</a>

  */

 public class PathNavigator

 {

     private final List<String> list;

     private int currentPosition;

     public PathNavigator( String path )

     {

         list = Arrays.asList( StringUtils.split( path, "/" ) );

         currentPosition = list.size();

     }

     public String getPath()

     {

         List<String> currentPathList = list.subList( 0, currentPosition );

         StringBuffer sb = new StringBuffer();

         for ( int i = 0; i < currentPathList.size(); i++ )

         {

             sb.append( currentPathList.get( i ) );

             sb.append( '/' );

         }

         return sb.toString();

     }

     public boolean backward()

     {

         if ( currentPosition == 0 )

         {

             return false;

         }

         currentPosition--;

         return true;

     }

     public boolean forward()

     {

         if ( currentPosition + 1 > list.size() )

         {

             return false;

         }

         currentPosition++;

         return true;

     }

 }