1 package org.apache.maven.shared.dependency.analyzer;
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.net.URL;
24 import java.util.Set;
25 import java.util.zip.ZipException;
26
27 import org.codehaus.plexus.component.annotations.Component;
28
29 /**
30 *
31 *
32 * @author <a href="mailto:markhobson@gmail.com">Mark Hobson</a>
33 * @version $Id$
34 */
35 @Component( role = ClassAnalyzer.class )
36 public class DefaultClassAnalyzer
37 implements ClassAnalyzer
38 {
39 // ClassAnalyzer methods --------------------------------------------------
40
41 public Set<String> analyze( URL url )
42 throws IOException
43 {
44 CollectorClassFileVisitor visitor = new CollectorClassFileVisitor();
45
46 try
47 {
48 ClassFileVisitorUtils.accept( url, visitor );
49 }
50 catch ( ZipException e )
51 {
52 // since the current ZipException gives no indication what jar file is corrupted
53 // we prefer to wrap another ZipException for better error visibility
54 ZipException ze =
55 new ZipException( "Cannot process Jar entry on URL: " + url + " due to " + e.getMessage() );
56 ze.initCause( e );
57 throw ze;
58 }
59
60 return visitor.getClasses();
61 }
62 }