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1   /**
2    * Copyright 2008-2012 The Kuali Foundation
3    *
4    * Licensed under the Educational Community License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    * http://www.opensource.org/licenses/ecl2.php
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.codehaus.mojo.wagon;
17  
18  /**
19   * Licensed to the Apache Software Foundation (ASF) under one or more contributor license
20   * agreements. See the NOTICE file distributed with this work for additional information regarding
21   * copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the
22   * "License"); you may not use this file except in compliance with the License. You may obtain a
23   * copy of the License at
24   * 
25   * http://www.apache.org/licenses/LICENSE-2.0
26   * 
27   * Unless required by applicable law or agreed to in writing, software distributed under the License
28   * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
29   * or implied. See the License for the specific language governing permissions and limitations under
30   * the License.
31   */
32  
33  import java.io.File;
34  
35  import org.apache.maven.plugin.MojoExecutionException;
36  import org.apache.maven.wagon.Wagon;
37  import org.apache.maven.wagon.WagonException;
38  
39  /**
40   * Download a single file.
41   * 
42   * @goal download-single
43   * @requiresProject false
44   */
45  public class DownloadSingleMojo
46      extends AbstractSingleWagonMojo
47  {
48      /**
49       * Relative path to the URL.
50       * @parameter expression="${wagon.fromFile}"
51       * @required 
52       */
53      private String fromFile;
54      
55      /**
56       * Directory to download the remote file to
57       * @parameter expression="${wagon.toDir}" 
58       */
59      private File toDir;
60  
61      /**
62       * File to download the remote file to.  Use this option to rename the file after download.
63       * When toDir is present, this argument is ignored
64       * @parameter expression="${wagon.toFile}" 
65       */
66      private File toFile;
67      
68  
69      protected void execute( Wagon wagon )
70          throws MojoExecutionException, WagonException
71      {
72          
73          if ( this.skip )
74          {
75              this.getLog().info( "Skip execution." );
76              return;
77          }
78          
79          if ( toDir != null )
80          {
81              toFile = new File( toDir, new File( fromFile ).getName() );
82          }
83          
84          if ( toFile == null )
85          {
86              throw new MojoExecutionException( "Either toDir or toFile is required" );
87          }
88          
89          this.getLog().info( "Downloading: " + wagon.getRepository().getUrl() + "/" + fromFile + " to " + toFile );
90  
91          wagon.get( fromFile, toFile );
92  
93      }
94  
95  }