1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.felix.bundleplugin;
20  
21  
22  import java.io.BufferedReader;
23  import java.io.ByteArrayInputStream;
24  import java.io.ByteArrayOutputStream;
25  import java.io.IOException;
26  import java.io.InputStream;
27  import java.io.InputStreamReader;
28  import java.net.URL;
29  import java.util.ArrayList;
30  import java.util.Arrays;
31  import java.util.HashSet;
32  import java.util.LinkedHashMap;
33  import java.util.List;
34  import java.util.Map;
35  import java.util.Set;
36  import java.util.TreeSet;
37  import java.util.regex.Pattern;
38  
39  import javax.xml.transform.Transformer;
40  import javax.xml.transform.TransformerFactory;
41  import javax.xml.transform.stream.StreamResult;
42  import javax.xml.transform.stream.StreamSource;
43  
44  import aQute.bnd.osgi.Analyzer;
45  import aQute.bnd.osgi.Descriptors.PackageRef;
46  import aQute.bnd.osgi.Jar;
47  import aQute.bnd.osgi.Processor;
48  import aQute.bnd.osgi.Resource;
49  import aQute.bnd.service.AnalyzerPlugin;
50  import aQute.libg.generics.Create;
51  import org.apache.felix.utils.manifest.Attribute;
52  import org.apache.felix.utils.manifest.Clause;
53  import org.osgi.framework.Constants;
54  
55  import static org.apache.felix.utils.manifest.Parser.parseHeader;
56  
57  
58  public class ScrPlugin implements AnalyzerPlugin
59  {
60  
61      Transformer transformer;
62  
63      public ScrPlugin() throws Exception
64      {
65          transformer = getTransformer( getClass().getResource( "scr.xsl" ) );
66      }
67  
68  
69      public boolean analyzeJar( Analyzer analyzer ) throws Exception
70      {
71          Set<String> headers = Create.set();
72  
73          String bpHeader = analyzer.getProperty( "Service-Component" );
74  
75          Map<String, ? extends Map<String, String>> map = Processor.parseHeader( bpHeader, null );
76          for ( String root : map.keySet() )
77          {
78              Resource resource = analyzer.getJar().getResource(root);
79              if ( resource != null ) {
80                  process(analyzer, root, resource, headers);
81              }
82          }
83  
84          // Group and analyze
85          for ( String str : headers )
86          {
87              int idx = str.indexOf( ':' );
88              if ( idx < 0 )
89              {
90                  analyzer.warning( ( new StringBuilder( "Error analyzing services in scr resource: " ) ).append( str ).toString() );
91                  continue;
92              }
93              String h = str.substring( 0, idx ).trim();
94              String v = str.substring( idx + 1 ).trim();
95  
96              StringBuilder sb = new StringBuilder();
97              String header = analyzer.getProperty( h );
98              if (header != null && !header.isEmpty())
99              {
100                 sb.append(header);
101                 sb.append(",");
102             }
103             sb.append( v );
104             analyzer.setProperty(h, sb.toString());
105         }
106         return false;
107     }
108 
109 
110     private void process( Analyzer analyzer, String path, Resource resource, Set<String> headers )
111     {
112         InputStream in = null;
113         try
114         {
115             in = resource.openInputStream();
116 
117             // Retrieve headers
118             Set<String> set = analyze( in );
119             headers.addAll( set );
120         }
121         catch ( Exception e )
122         {
123             analyzer.error( ( new StringBuilder( "Unexpected exception in processing scr resources(" ) )
124                 .append( path ).append( "): " ).append( e ).toString() );
125         }
126         finally
127         {
128             try
129             {
130                 if ( in != null )
131                 {
132                     in.close();
133                 }
134             }
135             catch ( IOException e )
136             {
137             }
138         }
139     }
140 
141 
142     public Set<String> analyze( InputStream in ) throws Exception
143     {
144         Set<String> refers = new HashSet<String>();
145         ByteArrayOutputStream bout = new ByteArrayOutputStream();
146         javax.xml.transform.Result r = new StreamResult( bout );
147         javax.xml.transform.Source s = new StreamSource( in );
148         transformer.transform( s, r );
149         ByteArrayInputStream bin = new ByteArrayInputStream( bout.toByteArray() );
150         bout.close();
151         BufferedReader br = new BufferedReader( new InputStreamReader( bin ) );
152         for ( String line = br.readLine(); line != null; line = br.readLine() )
153         {
154             line = line.trim();
155             if ( line.length() > 0 )
156             {
157                 refers.add( line );
158             }
159         }
160 
161         br.close();
162         return refers;
163     }
164 
165 
166     protected Transformer getTransformer( URL url ) throws Exception
167     {
168         TransformerFactory tf = TransformerFactory.newInstance();
169         javax.xml.transform.Source source = new StreamSource( url.openStream() );
170         return tf.newTransformer( source );
171     }
172 
173 }