001package org.apache.maven.configuration;
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
024/**
025 * A path translator that resolves relative paths against a specific base directory.
026 * 
027 * @author Benjamin Bentmann
028 */
029public class BasedirBeanConfigurationPathTranslator
030    implements BeanConfigurationPathTranslator
031{
032
033    private final File basedir;
034
035    /**
036     * Creates a new path translator using the specified base directory.
037     * 
038     * @param basedir The base directory to resolve relative paths against, may be {@code null} to disable path
039     *            translation.
040     */
041    public BasedirBeanConfigurationPathTranslator( File basedir )
042    {
043        this.basedir = basedir;
044    }
045
046    public File translatePath( File path )
047    {
048        File result = path;
049
050        if ( path != null && basedir != null )
051        {
052            if ( path.isAbsolute() )
053            {
054                // path is already absolute, we're done
055            }
056            else if ( path.getPath().startsWith( File.separator ) )
057            {
058                // drive-relative Windows path, don't align with base dir but with drive root
059                result = path.getAbsoluteFile();
060            }
061            else
062            {
063                // an ordinary relative path, align with base dir
064                result = new File( new File( basedir, path.getPath() ).toURI().normalize() ).getAbsoluteFile();
065            }
066        }
067
068        return result;
069    }
070
071}