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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  
25  import java.io.File;
26  import java.io.FileOutputStream;
27  import java.io.IOException;
28  import java.io.OutputStreamWriter;
29  
30  /**
31   * Appends a message to an UTF-8 encoded plain text file.
32   *
33   * @author Benjamin Bentmann
34   * @goal append
35   */
36  public class AppendMojo
37      extends AbstractMojo
38  {
39  
40      /**
41       * @parameter property="append.message"
42       */
43      private String message;
44  
45      /**
46       * @parameter default-value="${project.build.directory}/log.txt"
47       */
48      private File outputFile;
49  
50      public void execute()
51          throws MojoExecutionException
52      {
53          getLog().info( "[MAVEN-CORE-IT-LOG] Creating output file: " + outputFile );
54  
55          try
56          {
57              outputFile.getParentFile().mkdirs();
58  
59              getLog().info( "[MAVEN-CORE-IT-LOG]   " + message );
60  
61              try ( OutputStreamWriter writer = new OutputStreamWriter( new FileOutputStream( outputFile, true ),
62                                                                        "UTF-8" ) )
63              {
64                  writer.write( message );
65                  writer.write( "\n" );
66              }
67          }
68          catch ( IOException e )
69          {
70              throw new MojoExecutionException( "Output file could not be created: " + outputFile, e );
71          }
72  
73          getLog().info( "[MAVEN-CORE-IT-LOG] Created output file: " + outputFile );
74      }
75  
76  }