/*

  * $Source: /usr/cvsroot/jammyjoes/src/org/paneris/jammyjoes/servlet/JammyjoesFileDataAdaptor.java,v $

  * $Revision: 1.5 $

  *

  * Copyright (C) 2000 Myles Chippendale

  *

  * Part of Melati (http://melati.org), a framework for the rapid

  * development of clean, maintainable web applications.

  *

  * Melati is free software; Permission is granted to copy, distribute

  * and/or modify this software under the terms either:

  *

  * a) the GNU General Public License as published by the Free Software

  *    Foundation; either version 2 of the License, or (at your option)

  *    any later version,

  *

  *    or

  *

  * b) any version of the Melati Software License, as published

  *    at http://melati.org

  *

  * You should have received a copy of the GNU General Public License and

  * the Melati Software License along with this program;

  * if not, write to the Free Software Foundation, Inc.,

  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA to obtain the

  * GNU General Public License and visit http://melati.org to obtain the

  * Melati Software License.

  *

  * Feel free to contact the Developers of Melati (http://melati.org),

  * if you would like to work out a different arrangement than the options

  * outlined here.  It is our intention to allow Melati to be used by as

  * wide an audience as possible.

  *

  * This program is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  * GNU General Public License for more details.

  *

  * Contact details for copyright holder:

  *

  *     Mylesc Chippendale <mylesc@paneris.org>

  *     http://paneris.org/

  *     29 Stanley Road, Oxford, OX4 1QY, UK

  */

 /**

  * Interface for a file uploaded from a HTML form 

  */

 package org.paneris.jammyjoes.servlet;

 import java.io.File;

 import org.melati.servlet.BaseFileDataAdaptor;

 import org.melati.util.FileUtils;

 import org.melati.util.UTF8URLEncoder;

 /**

  * The default way to save an uploaded file to disk - we tell

  * it what directory to save it in and the base URL to that

  * directory

  * 

  */

 public class JammyjoesFileDataAdaptor extends BaseFileDataAdaptor {

   private String fieldName;

   protected String uploadDir = null;

   protected String uploadURL = null;

   protected boolean makeUnique = true;

   /**

    * Constructor

    * 

    * @param uploadDir The directory to save this file in

    * @param uploadURL A URL pointing to this directory (null if there

    *                  isn't an appropriate URL)

    */

   public JammyjoesFileDataAdaptor(String uploadDir, String uploadURL, String field) {

     this.uploadDir = uploadDir;

     this.uploadURL = uploadURL;

     fieldName = field;

   }

   /**

    * Constructor

    * 

    * @param uploadDir The directory to save this file in

    * @param uploadURL A URL pointing to this directory  (null if there

    *                  isn't an appropriate URL)

    * @param makeUnique Whether we should make sure the new file has a unique

    *                   name within the <code>uploadDir</code> directory

    */

   public JammyjoesFileDataAdaptor(String uploadDir, String uploadURL,

                                 boolean makeUnique, String field) {

     this.uploadDir = uploadDir;

     this.uploadURL = uploadURL;

     this.makeUnique = makeUnique;

     fieldName = field;

   }

   protected File calculateLocalFile() {

     File f = new File(uploadDir + bigOrSmall(),

                       UTF8URLEncoder.encode(field.getUploadedFileName()));

     return makeUnique ? FileUtils.withUniqueName(f) : f;

   }

   protected String calculateURL() {

     return uploadURL + bigOrSmall() + file.getName();

   }

   private String bigOrSmall() {

     String bit = "small";

     if (fieldName.equals("picture2")) bit = "big";

     return "/" + bit + "/";

   }

 }