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1   package org.apache.maven.shared.jar.identification.exposers;
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.shared.jar.JarAnalyzer;
23  import org.apache.maven.shared.jar.identification.JarIdentification;
24  import org.apache.maven.shared.jar.identification.JarIdentificationExposer;
25  import org.codehaus.plexus.util.FileUtils;
26  
27  import java.util.regex.Matcher;
28  import java.util.regex.Pattern;
29  
30  
31  /**
32   * Exposer that examines a JAR file to derive Maven metadata from the pattern of the JAR's filename.
33   * Will match the format <i>artifactId</i>-<i>version</i>.jar.
34   *
35   * @plexus.component role="org.apache.maven.shared.jar.identification.JarIdentificationExposer" role-hint="filename"
36   */
37  public class FilenameExposer
38      implements JarIdentificationExposer
39  {
40      private static final Pattern VERSION_PATTERN = Pattern.compile( "-[0-9]" );
41  
42      public void expose( JarIdentification identification, JarAnalyzer jarAnalyzer )
43      {
44          String filename = FileUtils.removeExtension( jarAnalyzer.getFile().getName() );
45          Matcher mat = VERSION_PATTERN.matcher( filename );
46          if ( mat.find() )
47          {
48              String prefix = filename.substring( 0, mat.start() );
49              identification.addArtifactId( prefix );
50              identification.addName( prefix );
51              identification.addVersion( filename.substring( mat.end() - 1 ) );
52          }
53          else
54          {
55              identification.addArtifactId( filename );
56              identification.addName( filename );
57          }
58      }
59  }