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1   package org.apache.maven.plugin.coreit;
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.plugin.AbstractMojo;
23  import org.apache.maven.plugin.MojoExecutionException;
24  import org.apache.maven.plugin.MojoFailureException;
25  
26  import java.io.File;
27  import java.io.FileOutputStream;
28  import java.io.IOException;
29  import java.io.OutputStream;
30  import java.util.List;
31  import java.util.Properties;
32  
33  /**
34   * Lists the available/configured reports in a properties file.
35   *
36   * @goal list
37   * @phase initialize
38   * @requiresReports true
39   *
40   * @author Benjamin Bentmann
41   *
42   */
43  public class ListMojo
44      extends AbstractMojo
45  {
46  
47      /**
48       * The path to the properties file used to list the available reports. The properties file will have a key named
49       * <code>reports</code> that gives the total count of reports. The keys <code>reports.0</code>,
50       * <code>reports.1</code> etc. will be used to denote the qualified class names of the reports.
51       *
52       * @parameter property="site.properties" default-value="target/reports.properties"
53       */
54      private File reportsFile;
55  
56      /**
57       * The reports configured for the current build.
58       *
59       * @parameter default-value="${reports}"
60       * @required
61       * @readonly
62       */
63      private List reports;
64  
65      /**
66       * Runs this mojo.
67       *
68       * @throws MojoExecutionException If the output file could not be created.
69       */
70      public void execute()
71          throws MojoExecutionException, MojoFailureException
72      {
73          Properties reportProperties = new Properties();
74  
75          reportProperties.setProperty( "reports", "" + reports.size() );
76  
77          for ( int i = 0; i < reports.size(); i++ )
78          {
79              Object report = reports.get( i );
80              getLog().info( "[MAVEN-CORE-IT-LOG] Listing report " + report );
81              reportProperties.setProperty( "reports." + i, report.getClass().getName() );
82          }
83  
84          getLog().info( "[MAVEN-CORE-IT-LOG] Creating output file " + reportsFile );
85  
86          OutputStream out = null;
87          try
88          {
89              reportsFile.getParentFile().mkdirs();
90              out = new FileOutputStream( reportsFile );
91              reportProperties.store( out, "MAVEN-CORE-IT-LOG" );
92          }
93          catch ( IOException e )
94          {
95              throw new MojoExecutionException( "Output file could not be created: " + reportsFile, e );
96          }
97          finally
98          {
99              if ( out != null )
100             {
101                 try
102                 {
103                     out.close();
104                 }
105                 catch ( IOException e )
106                 {
107                     // just ignore
108                 }
109             }
110         }
111 
112         getLog().info( "[MAVEN-CORE-IT-LOG] Created output file " + reportsFile );
113     }
114 
115 }