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1   package org.apache.maven.building;
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.IOException;
23  import java.io.InputStream;
24  import java.net.URL;
25  
26  /**
27   * Wraps an ordinary {@link URL} as a source.
28   *
29   * @author Benjamin Bentmann
30   */
31  public class UrlSource
32      implements Source
33  {
34  
35      private URL url;
36  
37      /**
38       * Creates a new source backed by the specified URL.
39       *
40       * @param url The file, must not be {@code null}.
41       */
42      public UrlSource( URL url )
43      {
44          if ( url == null )
45          {
46              throw new IllegalArgumentException( "no url specified" );
47          }
48          this.url = url;
49      }
50  
51      @Override
52      public InputStream getInputStream()
53          throws IOException
54      {
55          return url.openStream();
56      }
57  
58      @Override
59      public String getLocation()
60      {
61          return url.toString();
62      }
63  
64      /**
65       * Gets the URL of this source.
66       *
67       * @return The underlying URL, never {@code null}.
68       */
69      public URL getUrl()
70      {
71          return url;
72      }
73  
74      @Override
75      public String toString()
76      {
77          return getLocation();
78      }
79  
80  }