001package org.apache.maven.wagon.providers.webdav;
002
003/*
004 * Licensed to the Apache Software Foundation (ASF) under one
005 * or more contributor license agreements.  See the NOTICE file
006 * distributed with this work for additional information
007 * regarding copyright ownership.  The ASF licenses this file
008 * to you under the Apache License, Version 2.0 (the
009 * "License"); you may not use this file except in compliance
010 * with the License.  You may obtain a copy of the License at
011 *
012 *   http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing,
015 * software distributed under the License is distributed on an
016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017 * KIND, either express or implied.  See the License for the
018 * specific language governing permissions and limitations
019 * under the License.
020 */
021
022import org.codehaus.plexus.util.StringUtils;
023
024import java.util.List;
025import java.util.Arrays;
026
027/**
028 * @author <a href="mailto:james@atlassian.com">James William Dumay</a>
029 */
030public class PathNavigator
031{
032    private final List<String> list;
033
034    private int currentPosition;
035
036    public PathNavigator( String path )
037    {
038        list = Arrays.asList( StringUtils.split( path, "/" ) );
039        currentPosition = list.size();
040    }
041
042    public String getPath()
043    {
044        List<String> currentPathList = list.subList( 0, currentPosition );
045        StringBuilder sb = new StringBuilder();
046        for ( String path : currentPathList )
047        {
048            sb.append( path );
049            sb.append( '/' );
050        }
051        return sb.toString();
052    }
053
054    public boolean backward()
055    {
056        if ( currentPosition == 0 )
057        {
058            return false;
059        }
060        currentPosition--;
061        return true;
062    }
063
064    public boolean forward()
065    {
066        if ( currentPosition + 1 > list.size() )
067        {
068            return false;
069        }
070        currentPosition++;
071        return true;
072    }
073}