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1   package org.apache.maven.plugins.shade.mojo;
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.util.Collection;
23  import java.util.HashSet;
24  import java.util.Iterator;
25  
26  import org.apache.maven.artifact.Artifact;
27  
28  /**
29   * @author Benjamin Bentmann
30   */
31  class ArtifactSelector
32  {
33  
34      private Collection includes;
35  
36      private Collection excludes;
37  
38      public ArtifactSelector( Artifact projectArtifact, ArtifactSet artifactSet, String groupPrefix )
39      {
40          this( ( artifactSet != null ) ? artifactSet.getIncludes() : null,
41                ( artifactSet != null ) ? artifactSet.getExcludes() : null, groupPrefix );
42  
43          if ( projectArtifact != null && !this.includes.isEmpty() )
44          {
45              this.includes.add( new ArtifactId( projectArtifact ) );
46          }
47      }
48  
49      public ArtifactSelector( Collection includes, Collection excludes, String groupPrefix )
50      {
51          this.includes = toIds( includes );
52          this.excludes = toIds( excludes );
53  
54          if ( groupPrefix != null && groupPrefix.length() > 0 )
55          {
56              this.includes.add( new ArtifactId( groupPrefix + "*", "*", "*", "*" ) );
57          }
58      }
59  
60      private static Collection toIds( Collection patterns )
61      {
62          Collection result = new HashSet();
63  
64          if ( patterns != null )
65          {
66              for ( Iterator it = patterns.iterator(); it.hasNext(); )
67              {
68                  String pattern = (String) it.next();
69                  result.add( new ArtifactId( pattern ) );
70              }
71          }
72  
73          return result;
74      }
75  
76      public boolean isSelected( Artifact artifact )
77      {
78          return ( artifact != null ) ? isSelected( new ArtifactId( artifact ) ) : false;
79      }
80  
81      boolean isSelected( ArtifactId id )
82      {
83          return ( includes.isEmpty() || matches( includes, id ) ) && !matches( excludes, id );
84      }
85  
86      private boolean matches( Collection patterns, ArtifactId id )
87      {
88          for ( Iterator it = patterns.iterator(); it.hasNext(); )
89          {
90              ArtifactId pattern = (ArtifactId) it.next();
91              if ( id.matches( pattern ) )
92              {
93                  return true;
94              }
95          }
96          return false;
97      }
98  
99  }