PlatformURLConverter


1   /*******************************************************************************
2    * Copyright (c) 2006 IBM Corporation and others.
3    * All rights reserved. This program and the accompanying materials
4    * are made available under the terms of the Eclipse Public License v1.0
5    * which accompanies this distribution, and is available at
6    * http://www.eclipse.org/legal/epl-v10.html
7    * 
8    * Contributors:
9    *     IBM Corporation - initial API and implementation
10   *******************************************************************************/
11  package org.eclipse.core.internal.runtime;
12  
13  import java.io.IOException  ;
14  import java.net.URL  ;
15  import java.net.URLConnection  ;
16  import org.eclipse.core.internal.boot.PlatformURLConnection;
17  import org.eclipse.core.internal.boot.PlatformURLHandler;
18  import org.eclipse.core.runtime.FileLocator;
19  import org.eclipse.osgi.service.urlconversion.URLConverter;
20  
21  /**
22   * Class which implements the URLConverter service. Manages conversion of a 
23   * platform: URL to one with a more well known protocol.
24   * 
25   * @since 3.2
26   */
27  public class PlatformURLConverter implements URLConverter {
28  
29      /* (non-Javadoc)
30       * @see org.eclipse.osgi.service.urlconversion.URLConverter#toFileURL(java.net.URL)
31       */
32      public URL   toFileURL(URL   url) throws IOException   {
33          URLConnection   connection = url.openConnection();
34          if (!(connection instanceof PlatformURLConnection))
35              return url;
36          URL   result = ((PlatformURLConnection) connection).getURLAsLocal();
37          // if we have a bundle*: URL we should try to convert it
38          if (!result.getProtocol().startsWith(PlatformURLHandler.BUNDLE))
39              return result;
40          return FileLocator.toFileURL(result);
41      }
42  
43      /* (non-Javadoc)
44       * @see org.eclipse.osgi.service.urlconversion.URLConverter#resolve(java.net.URL)
45       */
46      public URL   resolve(URL   url) throws IOException   {
47          URLConnection   connection = url.openConnection();
48          if (!(connection instanceof PlatformURLConnection))
49              return url;
50          URL   result = ((PlatformURLConnection) connection).getResolvedURL();
51          // if we have a bundle*: URL we should try to convert it
52          if (!result.getProtocol().startsWith(PlatformURLHandler.BUNDLE))
53              return result;
54          return FileLocator.resolve(result);
55      }
56  }
57
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