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1   package org.apache.maven.model.io;
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.io.File;
23  import java.io.IOException;
24  import java.io.OutputStream;
25  import java.io.OutputStreamWriter;
26  import java.io.Writer;
27  import java.util.Map;
28  
29  import org.apache.maven.model.Model;
30  import org.apache.maven.model.io.xpp3.MavenXpp3Writer;
31  import org.codehaus.plexus.component.annotations.Component;
32  import org.codehaus.plexus.util.IOUtil;
33  import org.codehaus.plexus.util.WriterFactory;
34  
35  /**
36   * Handles serialization of a model into some kind of textual format like XML.
37   * 
38   * @author Benjamin Bentmann
39   */
40  @Component( role = ModelWriter.class )
41  public class DefaultModelWriter
42      implements ModelWriter
43  {
44  
45      public void write( File output, Map<String, Object> options, Model model )
46          throws IOException
47      {
48          if ( output == null )
49          {
50              throw new IllegalArgumentException( "output file missing" );
51          }
52  
53          if ( model == null )
54          {
55              throw new IllegalArgumentException( "model missing" );
56          }
57  
58          output.getParentFile().mkdirs();
59  
60          write( WriterFactory.newXmlWriter( output ), options, model );
61      }
62  
63      public void write( Writer output, Map<String, Object> options, Model model )
64          throws IOException
65      {
66          if ( output == null )
67          {
68              throw new IllegalArgumentException( "output writer missing" );
69          }
70  
71          if ( model == null )
72          {
73              throw new IllegalArgumentException( "model missing" );
74          }
75  
76          try
77          {
78              MavenXpp3Writer w = new MavenXpp3Writer();
79              w.write( output, model );
80          }
81          finally
82          {
83              IOUtil.close( output );
84          }
85      }
86  
87      public void write( OutputStream output, Map<String, Object> options, Model model )
88          throws IOException
89      {
90          if ( output == null )
91          {
92              throw new IllegalArgumentException( "output stream missing" );
93          }
94  
95          if ( model == null )
96          {
97              throw new IllegalArgumentException( "model missing" );
98          }
99  
100         try
101         {
102             String encoding = model.getModelEncoding();
103             if ( encoding == null || encoding.length() <= 0 )
104             {
105                 encoding = "UTF-8";
106             }
107             write( new OutputStreamWriter( output, encoding ), options, model );
108         }
109         finally
110         {
111             IOUtil.close( output );
112         }
113     }
114 
115 }