cvs commit: jakarta-jetspeed-2/applications/gems/src/java/org/apache/portals/gems/file FilePortlet.java

[ta...@apache.org]

taylor      2005/02/02 14:01:44

  Added:       applications/gems/src/java/org/apache/portals/gems/file
                        FilePortlet.java
  Log:
  useful little file portlet using prefs for source
  
  Revision  Changes    Path
  1.1                  jakarta-jetspeed-2/applications/gems/src/java/org/apache/portals/gems/file/FilePortlet.java
  
  Index: FilePortlet.java
  ===================================================================
  /*
   * Copyright 2000-2004 The Apache Software Foundation.
   * 
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   * 
   *      http://www.apache.org/licenses/LICENSE-2.0
   * 
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.portals.gems.file;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  
  import javax.portlet.PortletException;
  import javax.portlet.RenderRequest;
  import javax.portlet.RenderResponse;
  import javax.portlet.PortletPreferences;
  
  import org.apache.portals.bridges.common.GenericServletPortlet;
  
  
  /**
   * FilePortlet
   * 
   * @author <a href="mailto:taylor@apache.org">David Sean Taylor</a>
   * @version $Id: FilePortlet.java,v 1.1 2005/02/02 22:01:44 taylor Exp $
   */
  public class FilePortlet extends GenericServletPortlet
  {
      
      public void doView(RenderRequest request, RenderResponse response) throws PortletException, IOException
      {
          response.setContentType("text/html");
          PortletPreferences prefs = request.getPreferences();
          String fileName = prefs.getValue("file", null);
          if (fileName != null)
          {
              InputStream is = this.getPortletContext().getResourceAsStream(fileName);
              drain(is, response.getPortletOutputStream());
              is.close();
          }
          else
          {
              response.getWriter().println("Could not find file preference ");
          }
      }
      
      static final int BLOCK_SIZE=4096;
  
      public static void drain(InputStream r,OutputStream w) throws IOException
      {
          byte[] bytes=new byte[BLOCK_SIZE];
          try
          {
            int length=r.read(bytes);
            while(length!=-1)
            {
                if(length!=0)
                    {
                        w.write(bytes,0,length);
                    }
                length=r.read(bytes);
            }
        }
        finally
        {
          bytes=null;
        }
  
      }
     
      
  }
  
  
  

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