AccessLevel


1   /* Copyright 2000-2005 Anders Hovm�ller
2    *
3    * The person or persons who have associated their work with
4    * this document (the "Dedicator") hereby dedicate the entire
5    * copyright in the work of authorship identified below (the
6    * "Work") to the public domain.
7    *
8    * Dedicator makes this dedication for the benefit of the
9    * public at large and to the detriment of Dedicator's heirs
10   * and successors. Dedicator intends this dedication to be an
11   * overt act of relinquishment in perpetuity of all present
12   * and future rights under copyright law, whether vested or
13   * contingent, in the Work. Dedicator understands that such
14   * relinquishment of all rights includes the relinquishment of
15   * all rights to enforce (by lawsuit or otherwise) those
16   * copyrights in the Work.
17   *
18   * Dedicator recognizes that, once placed in the public
19   * domain, the Work may be freely reproduced, distributed,
20   * transmitted, used, modified, built upon, or otherwise
21   * exploited by anyone for any purpose, commercial or non-
22   * commercial, and in any way, including by methods that have
23   * not yet been invented or conceived.
24   */
25  
26  /**
27   * A class that defines the access levels of the forum.
28   */
29  package net.killingar.forum.internal;
30  
31  import it.unimi.dsi.fastutil.longs.Long2ObjectAVLTreeMap;
32  import it.unimi.dsi.fastutil.objects.Object2LongAVLTreeMap;
33  
34  import java.util.StringTokenizer  ;
35  
36  public final class AccessLevel
37  {
38      public static final long
39          // max:                                 0x8000000000000000
40          none                                    = 0x0000000000000000L,
41          everything                      = 0xFFFFFFFFFFFFFFFFL,
42  
43          // Forum
44          addUser                 = 0x0000000000000001L,
45          removeUser          =   0x0000000000000002L,
46          changeUser          = 0x0000000000000004L,
47          removeGroup         = 0x0000000000000008L,
48          changeGroup         = 0x0000000000000010L,
49          viewUser                = 0x0000000000000020L,
50  
51          // Planning
52          addEvent                = 0x0000000000000040L,
53          removeEvent         = 0x0000000000000080L,
54          setEventData        = 0x0000000000000100L,
55          changeEvent         = 0x0000000000000200L,
56          addGlobalEvent  = 0x0000000000080000L,
57  
58          // Area
59          addAreaGroup    = 0x0000000000000400L,
60          removeAreaGroup = 0x0000000000000800L,
61          changeAreaGroup = 0x0000000000001000L,
62  
63          readArea                = 0x0000000000002000L,
64          addArea                 =   0x0000000000004000L,
65          removeArea          = 0x0000000000008000L,
66          changeArea          = 0x0000000000010000L,
67  
68          addMessage          = 0x0000000000020000L,
69          removeMessage       = 0x0000000000040000L,
70  
71          // Quotes
72          addQuote                = 0x0000000000100000L,
73          removeQuote         = 0x0000000000200000L,
74          changeQuote         = 0x0000000000400000L,
75  
76          // Polls
77          addPoll                 =   0x0000000000800000L,
78          removePoll          =   0x0000000001000000L,
79          changePoll          = 0x0000000002000000L,
80          viewPoll                =   0x0000000004000000L,
81          addGlobalPoll       = 0x0000000008000000L,
82  
83          // Comics
84          addComic                =   0x0000000010000000L,
85          removeComic         =   0x0000000020000000L,
86          changeComic         =   0x0000000040000000L,
87  
88          // FAQ
89          addFAQTopic         = 0x0000000080000000L,
90          removeFAQTopic  = 0x0000000100000000L,
91          changeFAQTopic  = 0x0000000200000000L,
92          addFAQ                  = 0x0000000400000000L,
93          removeFAQ             = 0x0000000800000000L,
94          changeFAQ               = 0x0000001000000000L,
95  
96          // misc
97          wiki                        = 0x0000002000000000L,
98          myWiki                  = 0x0000004000000000L,
99          archive                 = 0x0000008000000000L,
100         comics                  = 0x0000010000000000L,
101         options                 = 0x0000020000000000L,
102         userDetails         = 0x0000040000000000L,
103 
104         // skin
105         addGlobalSkin       = 0x0000080000000000L,
106         viewSkin                = 0x0000100000000000L,
107         addSkin                 = 0x0000200000000000L,
108         removeSkin          = 0x0000400000000000L,
109         changeSkin          = 0x0000800000000000L,
110 
111         // task
112         addTask                 = 0x0001000000000000L,
113         removeTask          = 0x0002000000000000L,
114         setTaskData         = 0x0004000000000000L,
115         changeTask          = 0x0008000000000000L;
116 
117     public static Object2LongAVLTreeMap stringToLong;
118     public static Long2ObjectAVLTreeMap longToString;
119 
120     static
121     {
122         class M
123         {
124             public M(long _l, String   _s)
125             {
126                 l = _l;
127                 s = _s;
128             }
129 
130 
131             public long l;
132             public String   s;
133         };
134 
135 
136         M map[] = new M[]
137         {
138             // General
139             new M(addUser                   , "add user"                 ),
140             new M(removeUser            , "remove user"          ),
141             new M(changeUser            , "change user"          ),
142             new M(removeGroup           , "remove group"         ),
143             new M(changeGroup           , "change group"         ),
144             new M(viewUser              , "view user"                ),
145 
146 
147             // Planning
148             new M(addEvent              , "add event"                ),
149             new M(removeEvent           , "remove event"         ),
150             new M(setEventData      , "set eventdata"        ),
151             new M(changeEvent           , "change event"         ),
152             new M(addGlobalEvent  , "add global event" ),
153 
154 
155             // Area
156             new M(addAreaGroup      , "add area group"   ),
157             new M(removeAreaGroup   , "remove area group"),
158             new M(changeAreaGroup   , "change area group"),
159 
160 
161             new M(readArea              , "read area"                ),
162             new M(addArea                   , "add area"                 ),
163             new M(removeArea            , "remove area"          ),
164             new M(changeArea            , "change area"          ),
165 
166 
167             new M(addMessage            , "add message"          ),
168             new M(removeMessage     , "remove message"   ),
169 
170 
171             // Quotes
172             new M(addQuote              , "add quote"                ),
173             new M(removeQuote           , "remove quote"         ),
174             new M(changeQuote           , "change quote"         ),
175 
176 
177             // Polls
178             new M(addPoll                   , "add poll"                 ),
179             new M(removePoll            , "remove poll"          ),
180             new M(changePoll            , "change poll"          ),
181             new M(viewPoll              , "view poll"                ),
182             new M(addGlobalPoll     , "add global poll"  ),
183 
184 
185             // Comics
186             new M(addComic              , "add comic"                ),
187             new M(removeComic           , "remove comic"         ),
188             new M(changeComic           , "change comic"         ),
189 
190 
191             // FAQ
192             new M(addFAQTopic     , "add faq topic"      ),
193             new M(removeFAQTopic  , "remove faq topic" ),
194             new M(changeFAQTopic  , "change faq topic" ),
195             new M(addFAQ                    , "add faq"                  ),
196             new M(removeFAQ           , "remove faq"             ),
197             new M(changeFAQ           , "change faq"             ),
198 
199             // misc
200             new M(wiki                      , "wiki"                         ),
201             new M(myWiki                    , "my wiki"          ),
202             new M(archive                   , "archive"          ),
203             new M(comics                    , "comics"           ),
204             new M(options                   , "change options"   ),
205             new M(userDetails           , "change user details"),
206 
207             // skin
208             new M(addGlobalSkin     ,   "add global skin"       ),
209             new M(viewSkin              ,   "view skin"         ),
210             new M(addSkin                   ,   "add skin"                  ),
211             new M(removeSkin            ,   "remove skin"               ),
212             new M(changeSkin            ,   "change skin"               ),
213 
214             // task
215             new M(addTask                   , "add task"                 ),
216             new M(removeTask            , "remove task"      ),
217             new M(setTaskData           , "set taskdata"         ),
218             new M(changeTask            , "change task"      ),
219         };
220 
221 
222         stringToLong = new Object2LongAVLTreeMap();
223         for (int i = 0; i < map.length; i++)
224         {
225             stringToLong.put(map[i].s, map[i].l);
226         }
227 
228 
229         longToString = new Long2ObjectAVLTreeMap();
230         for (int i = 0; i < map.length; i++)
231         {
232             longToString.put(map[i].l, map[i].s);
233         }
234     }
235 
236 
237     private AccessLevel(){}
238 
239 
240     /**
241      * Get a descriptive line of the access level specified.
242      */
243     public static String   toString(long accessLevel)
244     {
245         switch ((int)accessLevel)
246         {
247         //case (int)none                :   return "none";
248         case (int)everything    :   return "everything";
249         default: break;
250         }
251 
252 
253         StringBuffer   r = new StringBuffer  ();
254 
255 
256         boolean beginning = true;
257         String   tmp;
258         for (int i = 0; i < 63; i++)
259         {
260             if ((accessLevel & 1L<<i) != 0)
261             {
262                 tmp = toStringSingleAccessLevel(accessLevel & 1L<<i);
263                 if (tmp != null)
264                 {
265                     if (!beginning)
266                         r.append(", ");
267                     r.append(tmp);
268                     beginning = false;
269                 }
270             }
271         }
272 
273 
274         return r.toString();
275     }
276 
277 
278     /**
279      * Get a list of individual access levels from a long with multiple access levels.
280      */
281     public static long[] list(long accessLevel)
282     {
283         int len = 0;
284         for (int i = 0; i < 63; i++)
285         {
286             if ((accessLevel & 1L<<i) != 0L)
287                 len++;
288         }
289         long r[] = new long[len];
290         int j = 0;
291 
292 
293         for (int i = 0; i < 63; i++)
294         {
295             if ((accessLevel & 1L<<i) != 0L)
296             {
297                 r[j] = accessLevel & (1L<<i);
298                 j++;
299             }
300         }
301 
302 
303         return r;
304     }
305 
306 
307     /**
308      * Get a descriptive string from a single access level value.
309      */
310     private static String   toStringSingleAccessLevel(long accessLevel)
311     {
312         if (accessLevel == 0L)return null;
313 
314         return (String  )longToString.get(accessLevel);
315     }
316 
317     /**
318      * Parse a string of access levels
319      */
320     public static long parseAccessLevel(String   accessLevel)
321     {
322         long r = 0;
323 
324         StringTokenizer   tokenizer = new StringTokenizer  (accessLevel.toLowerCase(), ",|");
325 
326         while (tokenizer.hasMoreTokens())
327         {
328             String   token = tokenizer.nextToken().trim();
329             if (!stringToLong.containsKey(token))
330                 throw new IllegalArgumentException  (token);
331 
332             r |= stringToLong.getLong(token);
333         }
334 
335         return r;
336     }
337 }
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