001package org.apache.maven.model.path;
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 java.io.File;
023
024import org.codehaus.plexus.component.annotations.Component;
025
026/**
027 * Resolves relative paths against a specific base directory.
028 * 
029 * @author Benjamin Bentmann
030 */
031@Component( role = PathTranslator.class )
032public class DefaultPathTranslator
033    implements PathTranslator
034{
035
036    public String alignToBaseDirectory( String path, File basedir )
037    {
038        String result = path;
039
040        if ( path != null && basedir != null )
041        {
042            path = path.replace( '\\', File.separatorChar ).replace( '/', File.separatorChar );
043
044            File file = new File( path );
045            if ( file.isAbsolute() )
046            {
047                // path was already absolute, just normalize file separator and we're done
048                result = file.getPath();
049            }
050            else if ( file.getPath().startsWith( File.separator ) )
051            {
052                // drive-relative Windows path, don't align with project directory but with drive root
053                result = file.getAbsolutePath();
054            }
055            else
056            {
057                // an ordinary relative path, align with project directory
058                result = new File( new File( basedir, path ).toURI().normalize() ).getAbsolutePath();
059            }
060        }
061
062        return result;
063    }
064
065}