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1   package org.apache.maven.plugins.shade.resource;
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 org.apache.maven.plugins.shade.relocation.Relocator;
23  import org.codehaus.plexus.util.IOUtil;
24  
25  import java.io.File;
26  import java.io.FileInputStream;
27  import java.io.IOException;
28  import java.io.InputStream;
29  import java.util.List;
30  import java.util.jar.JarEntry;
31  import java.util.jar.JarOutputStream;
32  
33  /**
34   * A resource processor that allows the addition of an arbitrary file
35   * content into the shaded JAR.
36   */
37  public class IncludeResourceTransformer
38      implements ResourceTransformer
39  {
40      File file;
41  
42      String resource;
43  
44      public boolean canTransformResource( String r )
45      {
46          return false;
47      }
48  
49      public void processResource( String resource, InputStream is, List<Relocator> relocators )
50          throws IOException
51      {
52          // no op
53      }
54  
55      public boolean hasTransformedResource()
56      {
57          return file != null ? file.exists() : false;
58      }
59  
60      public void modifyOutputStream( JarOutputStream jos )
61          throws IOException
62      {
63          jos.putNextEntry( new JarEntry( resource ) );
64  
65          InputStream in = new FileInputStream( file );
66          IOUtil.copy( in, jos );
67          in.close();
68      }
69  }