source/ch/cyberduck/core/URIEncoder.java

   1 package ch.cyberduck.core;
   2
   3 /*
   4  * Copyright (c) 2012 David Kocher. All rights reserved.
   5  * http://cyberduck.ch/
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * Bug fixes, suggestions and comments should be sent to:
  18  * dkocher@cyberduck.ch
  19  */
  20
  21 import org.apache.commons.lang3.StringUtils;
  22
  23 import java.io.UnsupportedEncodingException;
  24 import java.net.URLEncoder;
  25 import java.util.StringTokenizer;
  26
  27 /**
  28  * @version $Id$
  29  */
  30 public final class URIEncoder {
  31
  32     private URIEncoder() {
  33         //
  34     }
  35
  36     /**
  37      * URL encode a path
  38      *
  39      * @param p Path
  40      * @return URI encoded
  41      * @see java.net.URLEncoder#encode(String, String)
  42      */
  43     public static String encode(final String p) {
  44         try {
  45             final StringBuilder b = new StringBuilder();
  46             final StringTokenizer t = new StringTokenizer(p, "/");
  47             if(!t.hasMoreTokens()) {
  48                 return p;
  49             }
  50             if(StringUtils.startsWith(p, String.valueOf(Path.DELIMITER))) {
  51                 b.append(Path.DELIMITER);
  52             }
  53             while(t.hasMoreTokens()) {
  54                 b.append(URLEncoder.encode(t.nextToken(), "UTF-8"));
  55                 if(t.hasMoreTokens()) {
  56                     b.append(Path.DELIMITER);
  57                 }
  58             }
  59             if(StringUtils.endsWith(p, String.valueOf(Path.DELIMITER))) {
  60                 b.append(Path.DELIMITER);
  61             }
  62             // Becuase URLEncoder uses <code>application/x-www-form-urlencoded</code> we have to replace these
  63             // for proper URI percented encoding.
  64             return b.toString().replace("+", "%20").replace("*", "%2A").replace("%7E", "~");
  65         }
  66         catch(UnsupportedEncodingException e) {
  67             return p;
  68         }
  69     }
  70 }