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1   package org.apache.maven.model.building;
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  import java.io.FileInputStream;
24  import java.io.IOException;
25  import java.io.InputStream;
26  import java.net.URI;
27  
28  /**
29   * Wraps an ordinary {@link File} as a model source.
30   * 
31   * @author Benjamin Bentmann
32   */
33  public class FileModelSource
34      implements ModelSource2
35  {
36      private final File pomFile;
37  
38      /**
39       * Creates a new model source backed by the specified file.
40       * 
41       * @param pomFile The POM file, must not be {@code null}.
42       */
43      public FileModelSource( File pomFile )
44      {
45          if ( pomFile == null )
46          {
47              throw new IllegalArgumentException( "no POM file specified" );
48          }
49          this.pomFile = pomFile.getAbsoluteFile();
50      }
51  
52      public InputStream getInputStream()
53          throws IOException
54      {
55          return new FileInputStream( pomFile );
56      }
57  
58      public String getLocation()
59      {
60          return pomFile.getPath();
61      }
62  
63      /**
64       * Gets the POM file of this model source.
65       * 
66       * @return The underlying POM file, never {@code null}.
67       */
68      public File getPomFile()
69      {
70          return pomFile;
71      }
72  
73      @Override
74      public String toString()
75      {
76          return getLocation();
77      }
78  
79      public ModelSource2 getRelatedSource( String relPath )
80      {
81          relPath = relPath.replace( '\\', File.separatorChar ).replace( '/', File.separatorChar );
82  
83          File relatedPom = new File( pomFile.getParentFile(), relPath );
84  
85          if ( relatedPom.isDirectory() )
86          {
87              // TODO figure out how to reuse ModelLocator.locatePom(File) here
88              relatedPom = new File( relatedPom, "pom.xml" );
89          }
90  
91          if ( relatedPom.isFile() && relatedPom.canRead() )
92          {
93              return new FileModelSource( new File( relatedPom.toURI().normalize() ) );
94          }
95  
96          return null;
97      }
98  
99      public URI getLocationURI()
100     {
101         return pomFile.toURI();
102     }
103 }