code: private static InputStreamReader readXMLFile(final String archivePath)
  	{
  
  		try {
  			return new InputStreamReader(new BufferedInputStream(new FileInputStream(archivePath)),
  					WIKIPEDIA_ENCODING);
  
  		}
  		catch (Exception e) {
  			throw new RuntimeException(e);
  		}
  	}
docs: Creates a reader for the xml file.
  
  @param archivePath
  path to the xml file
  @return InputStreamReader