odk/examples/DevelopersGuide/Forms/URLHelper.java

   1 /*
   2  * This file is part of the LibreOffice project.
   3  *
   4  * This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   7  *
   8  * This file incorporates work covered by the following license notice:
   9  *
  10  *   Licensed to the Apache Software Foundation (ASF) under one or more
  11  *   contributor license agreements. See the NOTICE file distributed
  12  *   with this work for additional information regarding copyright
  13  *   ownership. The ASF licenses this file to you under the Apache
  14  *   License, Version 2.0 (the "License"); you may not use this file
  15  *   except in compliance with the License. You may obtain a copy of
  16  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  17  */
  18
  19 import java.io.File;
  20 import java.net.MalformedURLException;
  21
  22 public class URLHelper
  23 {
  24     /**
  25      * Because the office need URLs for loading/saving documents
  26      * we must convert used system paths.
  27      * And java use another notation for file URLs ... correct it.
  28      *
  29      * @param aSystemPath
  30      *          represent the file in system notation
  31      *
  32      * @return [String]
  33      *          a file url which represent the given system path
  34      */
  35     public static String getFileURLFromSystemPath( File aSystemPath )
  36     {
  37         String sFileURL = null;
  38         try
  39         {
  40             sFileURL = aSystemPath.toURI().toURL().toString();
  41         }
  42         catch( MalformedURLException exWrong )
  43         {
  44             sFileURL = null;
  45         }
  46
  47         // problem of java: file URL's are coded with 1 slash instead of 2 or 3 ones!
  48         // => correct this problem first, otherwise office can't use these URL's
  49         if(
  50             (sFileURL                       != null ) &&
  51             (sFileURL.startsWith("file:/")  == true ) &&
  52             (sFileURL.startsWith("file://") == false)
  53           )
  54         {
  55             StringBuffer sWorkBuffer = new StringBuffer(sFileURL);
  56             sWorkBuffer.insert(6,"//");
  57             sFileURL = sWorkBuffer.toString();
  58         }
  59
  60         return sFileURL;
  61     }
  62 }