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1   package org.apache.maven.cli;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *  http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import java.io.File;
23  
24  /**
25   * Resolve relative file path against the given base directory
26   */
27  public class ResolveFile
28  {
29      public static File resolveFile( File file, String baseDirectory )
30      {
31          if ( file == null )
32          {
33              return null;
34          }
35          else if ( file.isAbsolute() )
36          {
37              return file;
38          }
39          else if ( file.getPath().startsWith( File.separator ) )
40          {
41              // drive-relative Windows path
42              return file.getAbsoluteFile();
43          }
44          else
45          {
46              return new File( baseDirectory, file.getPath() ).getAbsoluteFile();
47          }
48      }
49  }