summaryrefslogtreecommitdiff
path: root/libdtv/liblx/liblx.h
blob: 26ea664ac5a1978a8f5662ba0468ec5366b4abbc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
//////////////////////////////////////////////////////////////
///                                                        ///
/// liblx.h: definitions necessary for the liblx package   ///
///                                                        ///
//////////////////////////////////////////////////////////////

// $Revision: 1.2 $
// $Date: 2001/06/25 19:39:00 $
// $Author: hakenes $
//
//   (C) 1992-2001 Rolf Hakenes <hakenes@hippomi.de>, under the GNU GPL.
//
// liblx is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2, or (at your option)
// any later version.
//
// liblx 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.
//
// You may have received a copy of the GNU General Public License
// along with liblx; see the file COPYING.  If not, write to the
// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.

#ifndef LIBLX_H
#define LIBLX_H

#ifndef NULL
#define NULL 0
#endif


/*
 *
 *   list support structures
 *
 */
struct NODE
{
   struct NODE                 *Succ;
   struct NODE                 *Pred;
   char                        *Name;
   unsigned short               HashKey;
};

struct LIST
{
   struct NODE                 *Head;
   struct NODE                 *Tail;
   char                        *Name;
   unsigned long                Size;
};


/*
 *
 *   memory managment structures
 *
 */
struct MEM_ENTRY
{
   struct MEM_ENTRY        *Succ;
   struct MEM_ENTRY        *Pred;
   unsigned long            Size;
};

struct MEM_CHUNK
{
   struct MEM_CHUNK        *Succ;
   struct MEM_CHUNK        *Pred;
   unsigned long            Size;
   struct MEM_ENTRY        *FirstFreeMemEntry;
   struct MEM_ENTRY        *FirstUsedMemEntry;
};

#ifdef __cplusplus
extern "C" {
#endif

/*
 *
 *   list functions (package xList)
 *
 */
    unsigned short      xHashKey (char *);
    struct LIST        *xNewList (char *);
    struct NODE        *xNewNode (char *, unsigned long);
    struct NODE        *xFindName (struct LIST *, char *);
/*
 *
 *   memory management
 *
 */
    void                xMemAllo (unsigned long, unsigned char **);
    void                xMemFre (unsigned char *);
    void                xMemFreeAll (struct MEM_CHUNK **);
    void                xMemMerge (struct MEM_CHUNK **);
    struct MEM_CHUNK  **xGetRemember (void);
    void                xSetRemember (struct MEM_CHUNK **);
    void                xPrintMemList (struct MEM_CHUNK **);
    unsigned long       xGetMemSize (struct MEM_CHUNK **);
extern unsigned long    xAllocatedMemory;
    char               *xSetText (char *);

#ifdef __cplusplus
}
#endif


#define     MEM_CHUNK_SIZE    65536

#define xMemAlloc(size, ptr) \
   xMemAllo (((unsigned long)((size))), ((unsigned char **)((ptr))))
#define xMemFree(ptr) xMemFre (((unsigned char *)((ptr))))
/*
 *
 *   list support macros
 *
 */
/*---------------------------------------------------------------------*
 |                                                                     |
 |   xCreateNode (NodeStruct,Name) allocates a correctly sized and     |
 |   typed node struct.                                                |
 |                                                                     |
 *---------------------------------------------------------------------*/
#define xCreateNode(NodeStruct,Name) \
   (NodeStruct) = (void *) xNewNode(Name, sizeof(*(NodeStruct)))


/*---------------------------------------------------------------------*
 |                                                                     |
 |      xSize (List) scans for the ->Size field of a list struct       |
 |                                                                     |
 *---------------------------------------------------------------------*/
#define xSize(List) ((List) ? ((struct LIST *)(List))->Size : 0)


/*---------------------------------------------------------------------*
 |                                                                     |
 |    xName (NodeStruct) scans for the ->Node.Name of a node struct    |
 |                                                                     |
 *---------------------------------------------------------------------*/
#define xName(NodeStruct) (((struct NODE *)(NodeStruct))->Name)


/*---------------------------------------------------------------------*
 |                                                                     |
 |    xSucc (NodeStruct) scans for the ->Node.Succ of a node struct    |
 |                                                                     |
 *---------------------------------------------------------------------*/
#define xSucc(NodeStruct) (((struct NODE *)(NodeStruct))->Succ)


/*---------------------------------------------------------------------*
 |                                                                     |
 |    xPred (NodeStruct) scans for the ->Node.Pred of a node struct    |
 |                                                                     |
 *---------------------------------------------------------------------*/
#define xPred(NodeStruct) (((struct NODE *)(NodeStruct))->Pred)


/*---------------------------------------------------------------------*
 |                                                                     |
 |    xForeach(List,NodeStruct) builds a loop to process each list     |
 |    element.                                                         |
 |                                                                     |
 *---------------------------------------------------------------------*/
#define xForeach(List,NodeStruct) \
   if (List) for ((NodeStruct) = (void *) ((struct LIST *)(List))->Head; \
           (NodeStruct); (NodeStruct) = (void *) xSucc (NodeStruct))


/*---------------------------------------------------------------------*
 |                                                                     |
 |    xForeachReverse(List,NodeStruct) builds a loop to process each   |
 |    element in reverse order.                                        |
 |                                                                     |
 *---------------------------------------------------------------------*/
#define xForeachReverse(List,NodeStruct) \
   if (List) for ((NodeStruct) = (void *) ((struct LIST *)(List))->Tail; \
           NodeStruct; (NodeStruct) = (void *) xPred (NodeStruct))


/*---------------------------------------------------------------------*
 |                                                                     |
 |    xRemove(List,NodeStruct) unchains a node struct out of a list.   |
 |                                                                     |
 *---------------------------------------------------------------------*/
#define xRemove(List,NodeStruct) \
   do \
   { \
      struct NODE *TmpNode; \
      struct LIST *TmpList; \
      \
      TmpNode = ((struct NODE *)(NodeStruct)); \
      TmpList = ((struct LIST *)(List)); \
	  \
      if (TmpNode->Pred) \
         (TmpNode->Pred)->Succ = TmpNode->Succ; \
      else TmpList->Head = TmpNode->Succ; \
      if (TmpNode->Succ) \
         (TmpNode->Succ)->Pred = TmpNode->Pred; \
      else TmpList->Tail = TmpNode->Pred; \
      TmpList->Size --; \
   } while (0)


/*************************************************************************
 *                                                                       *
 *     function  :   xAddHead                                            *
 *                                                                       *
 *     arguments :   List - pointer to a LIST structure                  *
 *                                                                       *
 *                   Node - pointer to a NODE structure                  *
 *                                                                       *
 *-----------------------------------------------------------------------*
 *                                                                       *
 *     xAddHead() inserts 'Node' at the head of 'List'.                  *
 *                                                                       *
 *************************************************************************/
#define xAddHead(List, NodeStruct) \
   do { \
      struct NODE *TmpNode; \
      struct LIST *TmpList; \
      \
      TmpNode = ((struct NODE *)(NodeStruct)); \
      TmpList = ((struct LIST *)(List)); \
	  \
      if (TmpList->Head) { \
         TmpNode->Pred = NULL; \
         TmpNode->Succ = TmpList->Head; \
         (TmpList->Head)->Pred = TmpNode; \
         TmpList->Head = TmpNode; } \
      else { \
         TmpList->Head = TmpNode; \
         TmpList->Tail = TmpNode; \
         TmpNode->Pred = NULL; \
         TmpNode->Succ = NULL; } \
      TmpList->Size++; \
   } while (0)


/*************************************************************************
 *                                                                       *
 *     function  :   xAddTail                                            *
 *                                                                       *
 *     arguments :   List - pointer to a LIST structure                  *
 *                                                                       *
 *                   Node - pointer to a NODE structure                  *
 *                                                                       *
 *-----------------------------------------------------------------------*
 *                                                                       *
 *     xAddTail() inserts 'Node' at the tail of 'List'.                  *
 *                                                                       *
 *************************************************************************/
#define xAddTail(List, NodeStruct) \
   do { \
      struct NODE *TmpNode; \
      struct LIST *TmpList; \
      \
      TmpNode = ((struct NODE *)(NodeStruct)); \
      TmpList = ((struct LIST *)(List)); \
	  \
      if (TmpList->Head) { \
         TmpNode->Succ = NULL; \
         TmpNode->Pred = TmpList->Tail; \
         (TmpList->Tail)->Succ = TmpNode; \
         TmpList->Tail = TmpNode; } \
      else { \
         TmpList->Head = TmpNode; \
         TmpList->Tail = TmpNode; \
         TmpNode->Pred = NULL; \
         TmpNode->Succ = NULL; } \
      TmpList->Size++; \
   } while (0)


/*************************************************************************
 *                                                                       *
 *     function  :   xRemHead                                            *
 *                                                                       *
 *     arguments :   List - pointer to a LIST structure                  *
 *                                                                       *
 *-----------------------------------------------------------------------*
 *                                                                       *
 *     xRemHead() removes a Node from head of 'List'.                    *
 *                                                                       *
 *************************************************************************/
#define xRemHead(List) \
   do { \
      struct LIST *TmpList; \
      \
      TmpList = ((struct LIST *)(List)); \
	  \
      if (TmpList->Head) \
      { \
         TmpList->Head = (TmpList->Head)->Succ; \
         if (TmpList->Head) (TmpList->Head)->Pred = NULL; \
         else TmpList->Tail = NULL; \
         TmpList->Size--; \
      } \
   } while (0)


/*************************************************************************
 *                                                                       *
 *     function  :   xRemTail                                            *
 *                                                                       *
 *     arguments :   List - pointer to a LIST structure                  *
 *                                                                       *
 *-----------------------------------------------------------------------*
 *                                                                       *
 *     xRemTail() removes a Node from the tail of 'List'.                *
 *                                                                       *
 *************************************************************************/
#define xRemTail(List) \
   do { \
      struct LIST *TmpList; \
      \
      TmpList = ((struct LIST *)(List)); \
	  \
      if (TmpList->Tail) \
      { \
         TmpList->Tail = (TmpList->Tail)->Pred; \
         if (TmpList->Tail) (TmpList->Tail)->Succ = NULL; \
         else TmpList->Head = NULL; \
         TmpList->Size--; \
      } \
   } while (0)


/*************************************************************************
 *                                                                       *
 *     function  :   xConCat                                             *
 *                                                                       *
 *     arguments :   DestinationList - pointer to the destination        *
 *                                     LIST structure                    *
 *                                                                       *
 *                   SourceList - pointer to the source LIST structure   *
 *                                                                       *
 *-----------------------------------------------------------------------*
 *                                                                       *
 *   xConCat() concats 'SourceList' with 'DestinationList' and clears    *
 *   'SourceList'.                                                       *
 *                                                                       *
 *************************************************************************/
#define xConCat(DestinationList, SourceList) \
   do { \
      struct LIST *SrcList; \
      struct LIST *DstList; \
      \
      SrcList = ((struct LIST *)(SourceList)); \
      DstList = ((struct LIST *)(DestinationList)); \
	  \
      if (DstList && SrcList) \
      { \
         if (DstList->Head) { \
            if (SrcList->Head) { \
               (DstList->Tail)->Succ = SrcList->Head; \
               (SrcList->Head)->Pred = DstList->Tail; \
               DstList->Tail = SrcList->Tail; \
               DstList->Size += SrcList->Size; \
               SrcList->Size = 0; \
               SrcList->Head = NULL; \
               SrcList->Tail = NULL; } } \
         else { \
            DstList->Head = SrcList->Head; \
            DstList->Tail = SrcList->Tail; \
            DstList->Size += SrcList->Size; \
            SrcList->Size = 0; \
            SrcList->Head = NULL; \
            SrcList->Tail = NULL; } \
      } \
      else if (SrcList) ((struct LIST *)(DestinationList)) = SrcList; \
   } while (0)



#define xJoinList(SourceList, DestinationList, NodeStruct) \
   do { \
      struct NODE *KeyNode; \
      struct NODE *TmpNode; \
      struct LIST *SrcList; \
      struct LIST *DstList; \
      \
      KeyNode = ((struct NODE *)(NodeStruct)); \
      SrcList = ((struct LIST *)(SourceList)); \
      DstList = ((struct LIST *)(DestinationList)); \
	  \
      if (SrcList->Head) \
      { \
         TmpNode = KeyNode->Succ; \
         KeyNode->Succ = SrcList->Head; \
         SrcList->Tail->Succ = TmpNode; \
         SrcList->Head->Pred = KeyNode; \
         if (!TmpNode) DstList->Tail = SrcList->Tail; \
         else TmpNode->Pred = SrcList->Tail; \
         DstList->Size += SrcList->Size; \
         SrcList->Size = 0; \
         SrcList->Head = NULL; \
         SrcList->Tail = NULL; \
      } \
   } while (0)

#define xJoin(SourceNode, DestinationList, NodeStruct) \
   do { \
      struct NODE *KeyNode; \
      struct NODE *TmpNode; \
      struct NODE *SrcNode; \
      struct LIST *DstList; \
      \
      KeyNode = ((struct NODE *)(NodeStruct)); \
      SrcNode = ((struct NODE *)(SourceNode)); \
      DstList = ((struct LIST *)(DestinationList)); \
	  \
      if (SrcNode) \
      { \
         TmpNode = KeyNode->Succ; \
         KeyNode->Succ = SrcNode; \
         SrcNode->Succ = TmpNode; \
         SrcNode->Pred = KeyNode; \
         if (!TmpNode) DstList->Tail = SrcNode; \
         else TmpNode->Pred = SrcNode; \
         DstList->Size += 1; \
      } \
   } while (0)

#define xClearList(SrcList) \
   do { \
         (SrcList)->Size = 0; \
         (SrcList)->Head = NULL; \
         (SrcList)->Tail = NULL; \
   } while (0)

#define xSetName(nodestruct, name) \
   do { \
      struct NODE *TmpNode; \
      \
      TmpNode = (struct NODE *) (nodestruct); \
      \
      TmpNode->Name = xSetText (name); \
      TmpNode->HashKey = xHashKey (name); \
   } while (0)

#endif