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1   package org.apache.maven.toolchain;
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.Reader;
24  
25  import org.apache.maven.toolchain.model.PersistedToolchains;
26  import org.apache.maven.toolchain.model.io.xpp3.MavenToolchainsXpp3Reader;
27  import org.codehaus.plexus.component.annotations.Component;
28  import org.codehaus.plexus.component.annotations.Requirement;
29  import org.codehaus.plexus.logging.Logger;
30  import org.codehaus.plexus.util.IOUtil;
31  import org.codehaus.plexus.util.ReaderFactory;
32  
33  /**
34   * @author Benjamin Bentmann
35   */
36  @Component( role = ToolchainsBuilder.class, hint = "default" )
37  public class DefaultToolchainsBuilder
38      implements ToolchainsBuilder
39  {
40  
41      @Requirement
42      private Logger logger;
43  
44      public PersistedToolchains build( File userToolchainsFile )
45          throws MisconfiguredToolchainException
46      {
47          PersistedToolchains toolchains = null;
48  
49          if ( userToolchainsFile != null && userToolchainsFile.isFile() )
50          {
51              Reader in = null;
52              try
53              {
54                  in = ReaderFactory.newXmlReader( userToolchainsFile );
55                  toolchains = new MavenToolchainsXpp3Reader().read( in );
56              }
57              catch ( Exception e )
58              {
59                  throw new MisconfiguredToolchainException( "Cannot read toolchains file at "
60                      + userToolchainsFile.getAbsolutePath(), e );
61              }
62              finally
63              {
64                  IOUtil.close( in );
65              }
66          }
67          else if ( userToolchainsFile != null )
68          {
69              logger.debug( "Toolchains configuration was not found at " + userToolchainsFile );
70          }
71  
72          return toolchains;
73      }
74  
75  }