summaryrefslogtreecommitdiff
path: root/src/lib/eet/eet_dictionary.c
blob: 46e8cbf723bba1719dcc64b0cf823826b02838cd (plain) (blame)
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
449
450
451
452
453
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* ifdef HAVE_CONFIG_H */

#include <stdio.h>
#include <string.h>
#include <math.h>

#include <Eina.h>

#include "Eet.h"
#include "Eet_private.h"

Eet_Dictionary *
eet_dictionary_add(void)
{
   Eet_Dictionary *ed;

   ed = eet_dictionary_calloc(1);
   if (!ed) return NULL;
   memset(ed->hash, -1, sizeof(int) * 256);
   eina_rwlock_new(&ed->rwlock);
   return ed;
}

void
eet_dictionary_free(Eet_Dictionary *ed)
{
   int i;

   if (!ed) return;
   eina_rwlock_free(&ed->rwlock);

   for (i = 0; i < ed->count; i++)
     {
        if (ed->all_allocated[i >> 3] & (1 << (i & 0x7)))
          {
             eina_stringshare_del(ed->all[i].str);
          }
     }
   free(ed->all);
   free(ed->all_hash);
   free(ed->all_allocated);

   if (ed->converts) eina_hash_free(ed->converts);
   eet_dictionary_mp_free(ed);
}

static int
_eet_dictionary_lookup(Eet_Dictionary *ed,
                       const char     *string,
                       int             len,
                       int             hash,
                       int            *previous)
{
   int prev = -1, current;

   current = ed->hash[hash];
   while (current != -1)
     {
        if ((ed->all[current].str) &&
            ((ed->all[current].str == string) ||
             ((ed->all[current].len == len) &&
              (!strcmp(ed->all[current].str, string)))))
          {
             break;
          }
        prev = current;
        current = ed->all[current].next;
     }
   if (previous) *previous = prev;
   return current;
}

int
eet_dictionary_string_add(Eet_Dictionary *ed,
                          const char     *string)
{
   Eet_String *current;
   const char *str;
   int hash, idx, pidx, len, cnt;

   if (!ed) return -1;

   hash = _eet_hash_gen(string, 8);
   len = strlen(string) + 1;

   eina_rwlock_take_read(&ed->rwlock);

   idx = _eet_dictionary_lookup(ed, string, len, hash, &pidx);
   if (idx != -1)
     {
        eina_rwlock_release(&ed->rwlock);
        return idx;
     }

   str = eina_stringshare_add(string);
   if (!str) goto on_error;

   eina_rwlock_release(&ed->rwlock);
   eina_rwlock_take_write(&ed->rwlock);
   if (ed->total == ed->count)
     {
        Eet_String *s;
        unsigned char *new_hash, *new_allocated;
        int total;

        total = ed->total + 64;

        s = realloc(ed->all, total * sizeof(Eet_String));
        if (!s) goto on_error;
        ed->all = s;

        new_hash = realloc(ed->all_hash, total);
        if (!new_hash) goto on_error;
        ed->all_hash = new_hash;

        new_allocated = realloc(ed->all_allocated, ((total >> 3) + 1));
        if (!new_allocated) goto on_error;
        ed->all_allocated = new_allocated;

        ed->total = total;
     }

   current = ed->all + ed->count;

   ed->all_allocated[ed->count >> 3] |= (1 << (ed->count & 0x7));
   ed->all_hash[ed->count] = hash;

   current->str = str;
   current->len = len;

   if (idx == -1)
     {
        current->next = ed->hash[hash];
        ed->hash[hash] = ed->count;
     }
   else
     {
        current->next = idx;
        if (pidx != -1) ed->all[pidx].next = ed->count;
        else ed->hash[hash] = ed->count;
     }
   cnt = ed->count++;
   eina_rwlock_release(&ed->rwlock);
   return cnt;

on_error:
   eina_rwlock_release(&ed->rwlock);
   return -1;
}

int
eet_dictionary_string_get_size(const Eet_Dictionary *ed,
                               int                   idx)
{
   int length = 0;

   if (!ed) goto done;
   if (idx < 0) goto done;

   eina_rwlock_take_read((Eina_RWLock *)&ed->rwlock);
   if (idx < ed->count) length = ed->all[idx].len;
   eina_rwlock_release((Eina_RWLock *)&ed->rwlock);
done:
   return length;
}

EAPI int
eet_dictionary_count(const Eet_Dictionary *ed)
{
   int cnt;

   if (!ed) return 0;

   eina_rwlock_take_read((Eina_RWLock *)&ed->rwlock);
   cnt = ed->count;
   eina_rwlock_release((Eina_RWLock *)&ed->rwlock);
   return cnt;
}

int
eet_dictionary_string_get_hash(const Eet_Dictionary *ed,
                               int                   idx)
{
   int hash = -1;

   if (!ed) goto done;
   if (idx < 0) goto done;

   eina_rwlock_take_read((Eina_RWLock *)&ed->rwlock);
   if (idx < ed->count) hash = ed->all_hash[idx];
   eina_rwlock_release((Eina_RWLock *)&ed->rwlock);
done:
   return hash;
}

const char *
eet_dictionary_string_get_char(const Eet_Dictionary *ed,
                               int                   idx)
{
   const char *s = NULL;

   if (!ed) goto done;
   if (idx < 0) goto done;

   eina_rwlock_take_read((Eina_RWLock *)&ed->rwlock);
   if (idx < ed->count)
     {
#ifdef _WIN32
        /* Windows file system could change the mmaped file when replacing a file. So we need to copy all string in memory to avoid bugs. */
        if (!(ed->all_allocated[idx >> 3] & (1 << (idx & 0x7))))
          {
             ed->all[idx].str = eina_stringshare_add(ed->all[idx].str);
             ed->all_allocated[idx >> 3] |= (1 << (idx & 0x7));
          }
#endif /* ifdef _WIN32 */
        s = ed->all[idx].str;
     }
   eina_rwlock_release((Eina_RWLock *)&ed->rwlock);
done:
   return s;
}

static inline Eina_Bool
_eet_dictionary_string_get_me_cache(const char *s,
                                    int         len,
                                    int        *mantisse,
                                    int        *exponent)
{
   if ((len == 6) && (s[0] == '0') && (s[1] == 'x') && (s[3] == 'p'))
     {
        *mantisse = (s[2] >= 'a') ? (s[2] - 'a' + 10) : (s[2] - '0');
        *exponent = (s[5] - '0');
        return EINA_TRUE;
     }
   return EINA_FALSE;
}

static inline Eina_Bool
_eet_dictionary_string_get_float_cache(const char *s,
                                       int         len,
                                       float      *result)
{
   int mantisse, exponent;

   if (_eet_dictionary_string_get_me_cache(s, len, &mantisse, &exponent))
     {
        if (s[4] == '+') *result = (float)(mantisse << exponent);
        else *result = (float)mantisse / (float)(1 << exponent);
        return EINA_TRUE;
     }
   return EINA_FALSE;
}

static inline Eina_Bool
_eet_dictionary_string_get_double_cache(const char *s,
                                        int         len,
                                        double     *result)
{
   int mantisse, exponent;

   if (_eet_dictionary_string_get_me_cache(s, len, &mantisse, &exponent))
     {
        if (s[4] == '+') *result = (double)(mantisse << exponent);
        else *result = (double)mantisse / (float)(1 << exponent);
        return EINA_TRUE;
     }
   return EINA_FALSE;
}

static inline Eina_Bool
_eet_dictionary_test(const Eet_Dictionary *ed,
                     int                   idx,
                     void                 *result)
{
   Eina_Bool limit = EINA_FALSE;

   if (!result) goto done;
   if (!ed) goto done;
   if (idx < 0) goto done;

   eina_rwlock_take_read((Eina_RWLock *)&ed->rwlock);
   if (!(idx < ed->count)) goto unlock_done;
   limit = EINA_TRUE;
unlock_done:
   eina_rwlock_release((Eina_RWLock *)&ed->rwlock);
done:
   return limit;
}

static Eet_Convert *
eet_dictionary_convert_get(const Eet_Dictionary *ed,
                           int                   idx,
                           const char          **str)
{
   Eet_Convert *result;

   eina_rwlock_take_read((Eina_RWLock *)&ed->rwlock);
   *str = ed->all[idx].str;

   if (!ed->converts)
     {
        ((Eet_Dictionary *)ed)->converts = eina_hash_int32_new(free);
        goto add_convert;
     }

   result = eina_hash_find(ed->converts, &idx);
   if (result) goto done;

add_convert:
   result = calloc(1, sizeof (Eet_Convert));
   eina_hash_add(ed->converts, &idx, result);
done:
   eina_rwlock_release((Eina_RWLock *)&ed->rwlock);
   return result;
}

Eina_Bool
eet_dictionary_string_get_float(const Eet_Dictionary *ed,
                                int                   idx,
                                float                *result)
{
   Eet_Convert *convert;
   const char *str;

   if (!_eet_dictionary_test(ed, idx, result)) return EINA_FALSE;

   convert = eet_dictionary_convert_get(ed, idx, &str);
   if (!convert) return EINA_FALSE;

   if (!(convert->type & EET_D_FLOAT))
     {
        eina_rwlock_take_read((Eina_RWLock *)&ed->rwlock);
        if (!_eet_dictionary_string_get_float_cache(str, ed->all[idx].len,
                                                    &convert->f))
          {
             long long mantisse = 0;
             long exponent = 0;

             if (eina_convert_atod(str, ed->all[idx].len, &mantisse,
                                   &exponent) == EINA_FALSE)
               {
                  eina_rwlock_release((Eina_RWLock *)&ed->rwlock);
                  return EINA_FALSE;
               }
             convert->f = ldexpf((float)mantisse, exponent);
          }
        eina_rwlock_release((Eina_RWLock *)&ed->rwlock);
        convert->type |= EET_D_FLOAT;
     }
   *result = convert->f;
   return EINA_TRUE;
}

Eina_Bool
eet_dictionary_string_get_double(const Eet_Dictionary *ed,
                                 int                   idx,
                                 double               *result)
{
   Eet_Convert *convert;
   const char *str;

   if (!_eet_dictionary_test(ed, idx, result)) return EINA_FALSE;

   convert = eet_dictionary_convert_get(ed, idx, &str);
   if (!convert) return EINA_FALSE;

   if (!(convert->type & EET_D_DOUBLE))
     {
        eina_rwlock_take_read((Eina_RWLock *)&ed->rwlock);

        if (!_eet_dictionary_string_get_double_cache(str, ed->all[idx].len,
                                                     &convert->d))
          {
             long long mantisse = 0;
             long exponent = 0;

             if (eina_convert_atod(str, ed->all[idx].len, &mantisse,
                                   &exponent) == EINA_FALSE)
               {
                  eina_rwlock_release((Eina_RWLock *)&ed->rwlock);
                  return EINA_FALSE;
               }
             convert->d = ldexp((double)mantisse, exponent);
          }
        eina_rwlock_release((Eina_RWLock *)&ed->rwlock);
        convert->type |= EET_D_DOUBLE;
     }

   *result = convert->d;
   return EINA_TRUE;
}

Eina_Bool
eet_dictionary_string_get_fp(const Eet_Dictionary *ed,
                             int                   idx,
                             Eina_F32p32          *result)
{
   Eet_Convert *convert;
   const char *str;

   if (!_eet_dictionary_test(ed, idx, result)) return EINA_FALSE;

   convert = eet_dictionary_convert_get(ed, idx, &str);
   if (!convert) return EINA_FALSE;

   if (!(convert->type & EET_D_FIXED_POINT))
     {
        Eina_F32p32 fp;

        eina_rwlock_take_read((Eina_RWLock *)&ed->rwlock);
        if (!eina_convert_atofp(str, ed->all[idx].len, &fp))
          {
             eina_rwlock_release((Eina_RWLock *)&ed->rwlock);
             return EINA_FALSE;
          }
        eina_rwlock_release((Eina_RWLock *)&ed->rwlock);

        convert->fp = fp;
        convert->type |= EET_D_FIXED_POINT;
     }

   *result = convert->fp;
   return EINA_TRUE;
}

EAPI int
eet_dictionary_string_check(Eet_Dictionary *ed,
                            const char     *string)
{
   int res = 0, i;

   if ((!ed) || (!string)) return 0;

   eina_rwlock_take_read((Eina_RWLock *)&ed->rwlock);
   if ((ed->start <= string) && (string < ed->end)) res = 1;

   if (!res)
     {
        for (i = 0; i < ed->count; i++)
          {
             if ((ed->all_allocated[i >> 3] & (1 << (i & 0x7))) && ed->all[i].str == string)
               {
                  res = 1;
                  break;
               }
          }
     }
   eina_rwlock_release((Eina_RWLock *)&ed->rwlock);
   return res;
}