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1   package atg.taglib.json.util;
2   
3   /*
4   Copyright (c) 2002 JSON.org
5   
6   Permission is hereby granted, free of charge, to any person obtaining a copy
7   of this software and associated documentation files (the "Software"), to deal
8   in the Software without restriction, including without limitation the rights
9   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10  copies of the Software, and to permit persons to whom the Software is
11  furnished to do so, subject to the following conditions:
12  
13  The above copyright notice and this permission notice shall be included in all
14  copies or substantial portions of the Software.
15  
16  The Software shall be used for Good, not Evil.
17  
18  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24  SOFTWARE.
25  */
26  
27  import java.util.Iterator;
28  
29  /**
30   * Convert a web browser cookie list string to a JSONObject and back.
31   * @author JSON.org
32   * @version 2
33   */
34  public class CookieList {
35  
36      /**
37       * Convert a cookie list into a JSONObject. A cookie list is a sequence
38       * of name/value pairs. The names are separated from the values by '='.
39       * The pairs are separated by ';'. The names and the values
40       * will be unescaped, possibly converting '+' and '%' sequences.
41       *
42       * To add a cookie to a cooklist,
43       * cookielistJSONObject.put(cookieJSONObject.getString("name"),
44       *     cookieJSONObject.getString("value"));
45       * @param string  A cookie list string
46       * @return A JSONObject
47       * @throws JSONException
48       */
49      public static JSONObject toJSONObject(String string) throws JSONException {
50          JSONObject o = new JSONObject();
51          JSONTokener x = new JSONTokener(string);
52          while (x.more()) {
53              String name = Cookie.unescape(x.nextTo('='));
54              x.next('=');
55              o.put(name, Cookie.unescape(x.nextTo(';')));
56              x.next();
57          }
58          return o;
59      }
60  
61  
62      /**
63       * Convert a JSONObject into a cookie list. A cookie list is a sequence
64       * of name/value pairs. The names are separated from the values by '='.
65       * The pairs are separated by ';'. The characters '%', '+', '=', and ';'
66       * in the names and values are replaced by "%hh".
67       * @param o A JSONObject
68       * @return A cookie list string
69       * @throws JSONException
70       */
71      public static String toString(JSONObject o) throws JSONException {
72          boolean      b = false;
73          Iterator     keys = o.keys();
74          String       s;
75          StringBuffer sb = new StringBuffer();
76          while (keys.hasNext()) {
77              s = keys.next().toString();
78              if (!o.isNull(s)) {
79                  if (b) {
80                      sb.append(';');
81                  }
82                  sb.append(Cookie.escape(s));
83                  sb.append("=");
84                  sb.append(Cookie.escape(o.getString(s)));
85                  b = true;
86              }
87          }
88          return sb.toString();
89      }
90  }