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 java.io.IOException;
23 import java.io.InputStream;
24 import java.util.List;
25 import java.util.jar.JarOutputStream;
26
27 import org.apache.maven.plugins.shade.relocation.Relocator;
28
29 /**
30 * Prevents duplicate copies of the license
31 */
32 public class ApacheLicenseResourceTransformer
33 implements ResourceTransformer
34 {
35 private static final String LICENSE_PATH = "META-INF/LICENSE";
36
37 private static final String LICENSE_TXT_PATH = "META-INF/LICENSE.txt";
38
39 public boolean canTransformResource( String resource )
40 {
41 return LICENSE_PATH.equalsIgnoreCase( resource )
42 || LICENSE_TXT_PATH.regionMatches( true, 0, resource, 0, LICENSE_TXT_PATH.length() );
43 }
44
45 public void processResource( String resource, InputStream is, List<Relocator> relocators, long time )
46 throws IOException
47 {
48 // no op
49 }
50
51 public boolean hasTransformedResource()
52 {
53 return false;
54 }
55
56 public void modifyOutputStream( JarOutputStream os )
57 throws IOException
58 {
59 // no op
60 }
61 }