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author | David Walter Seikel | 2012-01-04 18:41:13 +1000 |
---|---|---|
committer | David Walter Seikel | 2012-01-04 18:41:13 +1000 |
commit | dd7595a3475407a7fa96a97393bae8c5220e8762 (patch) | |
tree | e341e911d7eb911a51684a7412ef7f7c7605d28e /libraries/eina/src/lib/eina_stringshare.c | |
parent | Add the skeleton. (diff) | |
download | SledjHamr-dd7595a3475407a7fa96a97393bae8c5220e8762.zip SledjHamr-dd7595a3475407a7fa96a97393bae8c5220e8762.tar.gz SledjHamr-dd7595a3475407a7fa96a97393bae8c5220e8762.tar.bz2 SledjHamr-dd7595a3475407a7fa96a97393bae8c5220e8762.tar.xz |
Add the base Enlightenment Foundation Libraries - eina, eet, evas, ecore, embryo, and edje.
Note that embryo wont be used, but I'm not sure yet if you can build edje without it.
Diffstat (limited to 'libraries/eina/src/lib/eina_stringshare.c')
-rw-r--r-- | libraries/eina/src/lib/eina_stringshare.c | 751 |
1 files changed, 751 insertions, 0 deletions
diff --git a/libraries/eina/src/lib/eina_stringshare.c b/libraries/eina/src/lib/eina_stringshare.c new file mode 100644 index 0000000..478b300 --- /dev/null +++ b/libraries/eina/src/lib/eina_stringshare.c | |||
@@ -0,0 +1,751 @@ | |||
1 | /* EINA - EFL data type library | ||
2 | * Copyright (C) 2002,2003,2004,2005,2006,2007,2008,2010 | ||
3 | * Carsten Haitzler, | ||
4 | * Jorge Luis Zapata Muga, | ||
5 | * Cedric Bail, | ||
6 | * Gustavo Sverzut Barbieri | ||
7 | * Tom Hacohen | ||
8 | * Brett Nash | ||
9 | * | ||
10 | * This library is free software; you can redistribute it and/or | ||
11 | * modify it under the terms of the GNU Lesser General Public | ||
12 | * License as published by the Free Software Foundation; either | ||
13 | * version 2.1 of the License, or (at your option) any later version. | ||
14 | * | ||
15 | * This library is distributed in the hope that it will be useful, | ||
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
18 | * Lesser General Public License for more details. | ||
19 | * | ||
20 | * You should have received a copy of the GNU Lesser General Public | ||
21 | * License along with this library; | ||
22 | * if not, see <http://www.gnu.org/licenses/>. | ||
23 | */ | ||
24 | |||
25 | #ifdef HAVE_CONFIG_H | ||
26 | # include "config.h" | ||
27 | #endif | ||
28 | |||
29 | #ifdef HAVE_ALLOCA_H | ||
30 | # include <alloca.h> | ||
31 | #elif defined __GNUC__ | ||
32 | # define alloca __builtin_alloca | ||
33 | #elif defined _AIX | ||
34 | # define alloca __alloca | ||
35 | #elif defined _MSC_VER | ||
36 | # include <malloc.h> | ||
37 | # define alloca _alloca | ||
38 | #else | ||
39 | # include <stddef.h> | ||
40 | # ifdef __cplusplus | ||
41 | extern "C" | ||
42 | # endif | ||
43 | void *alloca (size_t); | ||
44 | #endif | ||
45 | |||
46 | #include <stdlib.h> | ||
47 | #include <stdio.h> | ||
48 | #include <string.h> | ||
49 | |||
50 | #ifdef HAVE_EVIL | ||
51 | # include <Evil.h> | ||
52 | #endif | ||
53 | |||
54 | #include "eina_config.h" | ||
55 | #include "eina_private.h" | ||
56 | #include "eina_error.h" | ||
57 | #include "eina_log.h" | ||
58 | #include "eina_stringshare.h" | ||
59 | #include "eina_lock.h" | ||
60 | |||
61 | /* undefs EINA_ARG_NONULL() so NULL checks are not compiled out! */ | ||
62 | #include "eina_safety_checks.h" | ||
63 | #include "eina_share_common.h" | ||
64 | |||
65 | /* The actual share */ | ||
66 | static Eina_Share *stringshare_share; | ||
67 | static const char EINA_MAGIC_STRINGSHARE_NODE_STR[] = "Eina Stringshare Node"; | ||
68 | |||
69 | extern Eina_Bool _share_common_threads_activated; | ||
70 | static Eina_Lock _mutex_small; | ||
71 | |||
72 | /* Stringshare optimizations */ | ||
73 | static const unsigned char _eina_stringshare_single[512] = { | ||
74 | 0,0,1,0,2,0,3,0,4,0,5,0,6,0,7,0,8,0,9,0,10,0,11,0,12,0,13,0,14,0,15,0, | ||
75 | 16,0,17,0,18,0,19,0,20,0,21,0,22,0,23,0,24,0,25,0,26,0,27,0,28,0,29,0,30,0, | ||
76 | 31,0,32,0,33,0,34,0,35,0,36,0,37,0,38,0,39,0,40,0,41,0,42,0,43,0,44,0,45,0, | ||
77 | 46,0,47,0,48,0,49,0,50,0,51,0,52,0,53,0,54,0,55,0,56,0,57,0,58,0,59,0,60,0, | ||
78 | 61,0,62,0,63,0,64,0,65,0,66,0,67,0,68,0,69,0,70,0,71,0,72,0,73,0,74,0,75,0, | ||
79 | 76,0,77,0,78,0,79,0,80,0,81,0,82,0,83,0,84,0,85,0,86,0,87,0,88,0,89,0,90,0, | ||
80 | 91,0,92,0,93,0,94,0,95,0,96,0,97,0,98,0,99,0,100,0,101,0,102,0,103,0,104,0, | ||
81 | 105,0, | ||
82 | 106,0,107,0,108,0,109,0,110,0,111,0,112,0,113,0,114,0,115,0,116,0,117,0,118, | ||
83 | 0,119,0,120,0, | ||
84 | 121,0,122,0,123,0,124,0,125,0,126,0,127,0,128,0,129,0,130,0,131,0,132,0,133, | ||
85 | 0,134,0,135,0, | ||
86 | 136,0,137,0,138,0,139,0,140,0,141,0,142,0,143,0,144,0,145,0,146,0,147,0,148, | ||
87 | 0,149,0,150,0, | ||
88 | 151,0,152,0,153,0,154,0,155,0,156,0,157,0,158,0,159,0,160,0,161,0,162,0,163, | ||
89 | 0,164,0,165,0, | ||
90 | 166,0,167,0,168,0,169,0,170,0,171,0,172,0,173,0,174,0,175,0,176,0,177,0,178, | ||
91 | 0,179,0,180,0, | ||
92 | 181,0,182,0,183,0,184,0,185,0,186,0,187,0,188,0,189,0,190,0,191,0,192,0,193, | ||
93 | 0,194,0,195,0, | ||
94 | 196,0,197,0,198,0,199,0,200,0,201,0,202,0,203,0,204,0,205,0,206,0,207,0,208, | ||
95 | 0,209,0,210,0, | ||
96 | 211,0,212,0,213,0,214,0,215,0,216,0,217,0,218,0,219,0,220,0,221,0,222,0,223, | ||
97 | 0,224,0,225,0, | ||
98 | 226,0,227,0,228,0,229,0,230,0,231,0,232,0,233,0,234,0,235,0,236,0,237,0,238, | ||
99 | 0,239,0,240,0, | ||
100 | 241,0,242,0,243,0,244,0,245,0,246,0,247,0,248,0,249,0,250,0,251,0,252,0,253, | ||
101 | 0,254,0,255,0 | ||
102 | }; | ||
103 | |||
104 | typedef struct _Eina_Stringshare_Small Eina_Stringshare_Small; | ||
105 | typedef struct _Eina_Stringshare_Small_Bucket Eina_Stringshare_Small_Bucket; | ||
106 | |||
107 | struct _Eina_Stringshare_Small_Bucket | ||
108 | { | ||
109 | /* separate arrays for faster lookups */ | ||
110 | const char **strings; | ||
111 | unsigned char *lengths; | ||
112 | unsigned short *references; | ||
113 | int count; | ||
114 | int size; | ||
115 | }; | ||
116 | |||
117 | struct _Eina_Stringshare_Small | ||
118 | { | ||
119 | Eina_Stringshare_Small_Bucket *buckets[256]; | ||
120 | }; | ||
121 | |||
122 | #define EINA_STRINGSHARE_SMALL_BUCKET_STEP 8 | ||
123 | static Eina_Stringshare_Small _eina_small_share; | ||
124 | |||
125 | static inline int | ||
126 | _eina_stringshare_small_cmp(const Eina_Stringshare_Small_Bucket *bucket, | ||
127 | int i, | ||
128 | const char *pstr, | ||
129 | unsigned char plength) | ||
130 | { | ||
131 | /* pstr and plength are from second char and on, since the first is | ||
132 | * always the same. | ||
133 | * | ||
134 | * First string being always the same, size being between 2 and 3 | ||
135 | * characters (there is a check for special case length==1 and then | ||
136 | * small stringshare is applied to strings < 4), we just need to | ||
137 | * compare 2 characters of both strings. | ||
138 | */ | ||
139 | const unsigned char cur_plength = bucket->lengths[i] - 1; | ||
140 | const char *cur_pstr; | ||
141 | |||
142 | if (cur_plength > plength) | ||
143 | return 1; | ||
144 | else if (cur_plength < plength) | ||
145 | return -1; | ||
146 | |||
147 | cur_pstr = bucket->strings[i] + 1; | ||
148 | |||
149 | if (cur_pstr[0] > pstr[0]) | ||
150 | return 1; | ||
151 | else if (cur_pstr[0] < pstr[0]) | ||
152 | return -1; | ||
153 | |||
154 | if (plength == 1) | ||
155 | return 0; | ||
156 | |||
157 | if (cur_pstr[1] > pstr[1]) | ||
158 | return 1; | ||
159 | else if (cur_pstr[1] < pstr[1]) | ||
160 | return -1; | ||
161 | |||
162 | return 0; | ||
163 | } | ||
164 | |||
165 | static const char * | ||
166 | _eina_stringshare_small_bucket_find(const Eina_Stringshare_Small_Bucket *bucket, | ||
167 | const char *str, | ||
168 | unsigned char length, | ||
169 | int *idx) | ||
170 | { | ||
171 | const char *pstr = str + 1; /* skip first letter, it's always the same */ | ||
172 | unsigned char plength = length - 1; | ||
173 | int i, low, high; | ||
174 | |||
175 | if (bucket->count == 0) | ||
176 | { | ||
177 | *idx = 0; | ||
178 | return NULL; | ||
179 | } | ||
180 | |||
181 | low = 0; | ||
182 | high = bucket->count; | ||
183 | |||
184 | while (low < high) | ||
185 | { | ||
186 | int r; | ||
187 | |||
188 | i = (low + high - 1) / 2; | ||
189 | |||
190 | r = _eina_stringshare_small_cmp(bucket, i, pstr, plength); | ||
191 | if (r > 0) | ||
192 | high = i; | ||
193 | else if (r < 0) | ||
194 | low = i + 1; | ||
195 | else | ||
196 | { | ||
197 | *idx = i; | ||
198 | return bucket->strings[i]; | ||
199 | } | ||
200 | } | ||
201 | |||
202 | *idx = low; | ||
203 | return NULL; | ||
204 | } | ||
205 | |||
206 | static Eina_Bool | ||
207 | _eina_stringshare_small_bucket_resize(Eina_Stringshare_Small_Bucket *bucket, | ||
208 | int size) | ||
209 | { | ||
210 | void *tmp; | ||
211 | |||
212 | tmp = realloc((void *)bucket->strings, size * sizeof(bucket->strings[0])); | ||
213 | if (!tmp) | ||
214 | { | ||
215 | eina_error_set(EINA_ERROR_OUT_OF_MEMORY); | ||
216 | return 0; | ||
217 | } | ||
218 | |||
219 | bucket->strings = tmp; | ||
220 | |||
221 | tmp = realloc(bucket->lengths, size * sizeof(bucket->lengths[0])); | ||
222 | if (!tmp) | ||
223 | { | ||
224 | eina_error_set(EINA_ERROR_OUT_OF_MEMORY); | ||
225 | return 0; | ||
226 | } | ||
227 | |||
228 | bucket->lengths = tmp; | ||
229 | |||
230 | tmp = realloc(bucket->references, size * sizeof(bucket->references[0])); | ||
231 | if (!tmp) | ||
232 | { | ||
233 | eina_error_set(EINA_ERROR_OUT_OF_MEMORY); | ||
234 | return 0; | ||
235 | } | ||
236 | |||
237 | bucket->references = tmp; | ||
238 | |||
239 | bucket->size = size; | ||
240 | return 1; | ||
241 | } | ||
242 | |||
243 | static const char * | ||
244 | _eina_stringshare_small_bucket_insert_at( | ||
245 | Eina_Stringshare_Small_Bucket **p_bucket, | ||
246 | const char *str, | ||
247 | unsigned char length, | ||
248 | int idx) | ||
249 | { | ||
250 | Eina_Stringshare_Small_Bucket *bucket = *p_bucket; | ||
251 | int todo, off; | ||
252 | char *snew; | ||
253 | |||
254 | if (!bucket) | ||
255 | { | ||
256 | *p_bucket = bucket = calloc(1, sizeof(*bucket)); | ||
257 | if (!bucket) | ||
258 | { | ||
259 | eina_error_set(EINA_ERROR_OUT_OF_MEMORY); | ||
260 | return NULL; | ||
261 | } | ||
262 | } | ||
263 | |||
264 | if (bucket->count + 1 >= bucket->size) | ||
265 | { | ||
266 | int size = bucket->size + EINA_STRINGSHARE_SMALL_BUCKET_STEP; | ||
267 | if (!_eina_stringshare_small_bucket_resize(bucket, size)) | ||
268 | return NULL; | ||
269 | } | ||
270 | |||
271 | snew = malloc(length + 1); | ||
272 | if (!snew) | ||
273 | { | ||
274 | eina_error_set(EINA_ERROR_OUT_OF_MEMORY); | ||
275 | return NULL; | ||
276 | } | ||
277 | |||
278 | memcpy(snew, str, length); | ||
279 | snew[length] = '\0'; | ||
280 | |||
281 | off = idx + 1; | ||
282 | todo = bucket->count - idx; | ||
283 | if (todo > 0) | ||
284 | { | ||
285 | memmove((void *)(bucket->strings + off), bucket->strings + idx, | ||
286 | todo * sizeof(bucket->strings[0])); | ||
287 | memmove(bucket->lengths + off, bucket->lengths + idx, | ||
288 | todo * sizeof(bucket->lengths[0])); | ||
289 | memmove(bucket->references + off, bucket->references + idx, | ||
290 | todo * sizeof(bucket->references[0])); | ||
291 | } | ||
292 | |||
293 | bucket->strings[idx] = snew; | ||
294 | bucket->lengths[idx] = length; | ||
295 | bucket->references[idx] = 1; | ||
296 | bucket->count++; | ||
297 | |||
298 | return snew; | ||
299 | } | ||
300 | |||
301 | static void | ||
302 | _eina_stringshare_small_bucket_remove_at( | ||
303 | Eina_Stringshare_Small_Bucket **p_bucket, | ||
304 | int idx) | ||
305 | { | ||
306 | Eina_Stringshare_Small_Bucket *bucket = *p_bucket; | ||
307 | int todo, off; | ||
308 | |||
309 | if (bucket->references[idx] > 1) | ||
310 | { | ||
311 | bucket->references[idx]--; | ||
312 | return; | ||
313 | } | ||
314 | |||
315 | free((char *)bucket->strings[idx]); | ||
316 | |||
317 | if (bucket->count == 1) | ||
318 | { | ||
319 | free((void *)bucket->strings); | ||
320 | free(bucket->lengths); | ||
321 | free(bucket->references); | ||
322 | free(bucket); | ||
323 | *p_bucket = NULL; | ||
324 | return; | ||
325 | } | ||
326 | |||
327 | bucket->count--; | ||
328 | if (idx == bucket->count) | ||
329 | goto end; | ||
330 | |||
331 | off = idx + 1; | ||
332 | todo = bucket->count - idx; | ||
333 | |||
334 | memmove((void *)(bucket->strings + idx), bucket->strings + off, | ||
335 | todo * sizeof(bucket->strings[0])); | ||
336 | memmove(bucket->lengths + idx, bucket->lengths + off, | ||
337 | todo * sizeof(bucket->lengths[0])); | ||
338 | memmove(bucket->references + idx, bucket->references + off, | ||
339 | todo * sizeof(bucket->references[0])); | ||
340 | |||
341 | end: | ||
342 | if (bucket->count + EINA_STRINGSHARE_SMALL_BUCKET_STEP < bucket->size) | ||
343 | { | ||
344 | int size = bucket->size - EINA_STRINGSHARE_SMALL_BUCKET_STEP; | ||
345 | _eina_stringshare_small_bucket_resize(bucket, size); | ||
346 | } | ||
347 | } | ||
348 | |||
349 | static const char * | ||
350 | _eina_stringshare_small_add(const char *str, unsigned char length) | ||
351 | { | ||
352 | Eina_Stringshare_Small_Bucket **bucket; | ||
353 | int i; | ||
354 | |||
355 | bucket = _eina_small_share.buckets + (unsigned char)str[0]; | ||
356 | if (!*bucket) | ||
357 | i = 0; | ||
358 | else | ||
359 | { | ||
360 | const char *ret; | ||
361 | ret = _eina_stringshare_small_bucket_find(*bucket, str, length, &i); | ||
362 | if (ret) | ||
363 | { | ||
364 | (*bucket)->references[i]++; | ||
365 | return ret; | ||
366 | } | ||
367 | } | ||
368 | |||
369 | return _eina_stringshare_small_bucket_insert_at(bucket, str, length, i); | ||
370 | } | ||
371 | |||
372 | static void | ||
373 | _eina_stringshare_small_del(const char *str, unsigned char length) | ||
374 | { | ||
375 | Eina_Stringshare_Small_Bucket **bucket; | ||
376 | const char *ret; | ||
377 | int i; | ||
378 | |||
379 | bucket = _eina_small_share.buckets + (unsigned char)str[0]; | ||
380 | if (!*bucket) | ||
381 | goto error; | ||
382 | |||
383 | ret = _eina_stringshare_small_bucket_find(*bucket, str, length, &i); | ||
384 | if (!ret) | ||
385 | goto error; | ||
386 | |||
387 | _eina_stringshare_small_bucket_remove_at(bucket, i); | ||
388 | return; | ||
389 | |||
390 | error: | ||
391 | CRITICAL("EEEK trying to del non-shared stringshare \"%s\"", str); | ||
392 | } | ||
393 | |||
394 | static void | ||
395 | _eina_stringshare_small_init(void) | ||
396 | { | ||
397 | eina_lock_new(&_mutex_small); | ||
398 | memset(&_eina_small_share, 0, sizeof(_eina_small_share)); | ||
399 | } | ||
400 | |||
401 | static void | ||
402 | _eina_stringshare_small_shutdown(void) | ||
403 | { | ||
404 | Eina_Stringshare_Small_Bucket **p_bucket, **p_bucket_end; | ||
405 | |||
406 | p_bucket = _eina_small_share.buckets; | ||
407 | p_bucket_end = p_bucket + 256; | ||
408 | |||
409 | for (; p_bucket < p_bucket_end; p_bucket++) | ||
410 | { | ||
411 | Eina_Stringshare_Small_Bucket *bucket = *p_bucket; | ||
412 | char **s, **s_end; | ||
413 | |||
414 | if (!bucket) | ||
415 | continue; | ||
416 | |||
417 | s = (char **)bucket->strings; | ||
418 | s_end = s + bucket->count; | ||
419 | for (; s < s_end; s++) | ||
420 | free(*s); | ||
421 | |||
422 | free((void *)bucket->strings); | ||
423 | free(bucket->lengths); | ||
424 | free(bucket->references); | ||
425 | free(bucket); | ||
426 | *p_bucket = NULL; | ||
427 | } | ||
428 | |||
429 | eina_lock_free(&_mutex_small); | ||
430 | } | ||
431 | |||
432 | static void | ||
433 | _eina_stringshare_small_bucket_dump(Eina_Stringshare_Small_Bucket *bucket, | ||
434 | struct dumpinfo *di) | ||
435 | { | ||
436 | const char **s = bucket->strings; | ||
437 | unsigned char *l = bucket->lengths; | ||
438 | unsigned short *r = bucket->references; | ||
439 | int i; | ||
440 | |||
441 | di->used += sizeof(*bucket); | ||
442 | di->used += bucket->count * sizeof(*s); | ||
443 | di->used += bucket->count * sizeof(*l); | ||
444 | di->used += bucket->count * sizeof(*r); | ||
445 | di->unique += bucket->count; | ||
446 | |||
447 | for (i = 0; i < bucket->count; i++, s++, l++, r++) | ||
448 | { | ||
449 | int dups; | ||
450 | #ifdef _WIN32 | ||
451 | printf("DDD: %5hu %5hu '%s'\n", *l, *r, *s); | ||
452 | #else | ||
453 | printf("DDD: %5hhu %5hu '%s'\n", *l, *r, *s); | ||
454 | #endif | ||
455 | |||
456 | dups = (*r - 1); | ||
457 | |||
458 | di->used += *l; | ||
459 | di->saved += *l * dups; | ||
460 | di->dups += dups; | ||
461 | } | ||
462 | } | ||
463 | |||
464 | static void | ||
465 | _eina_stringshare_small_dump(struct dumpinfo *di) | ||
466 | { | ||
467 | Eina_Stringshare_Small_Bucket **p_bucket, **p_bucket_end; | ||
468 | |||
469 | p_bucket = _eina_small_share.buckets; | ||
470 | p_bucket_end = p_bucket + 256; | ||
471 | |||
472 | for (; p_bucket < p_bucket_end; p_bucket++) | ||
473 | { | ||
474 | Eina_Stringshare_Small_Bucket *bucket = *p_bucket; | ||
475 | |||
476 | if (!bucket) | ||
477 | continue; | ||
478 | |||
479 | _eina_stringshare_small_bucket_dump(bucket, di); | ||
480 | } | ||
481 | } | ||
482 | |||
483 | |||
484 | /*============================================================================* | ||
485 | * Global * | ||
486 | *============================================================================*/ | ||
487 | |||
488 | /** | ||
489 | * @internal | ||
490 | * @brief Initialize the share_common module. | ||
491 | * | ||
492 | * @return #EINA_TRUE on success, #EINA_FALSE on failure. | ||
493 | * | ||
494 | * This function sets up the share_common module of Eina. It is called by | ||
495 | * eina_init(). | ||
496 | * | ||
497 | * @see eina_init() | ||
498 | */ | ||
499 | Eina_Bool | ||
500 | eina_stringshare_init(void) | ||
501 | { | ||
502 | Eina_Bool ret; | ||
503 | ret = eina_share_common_init(&stringshare_share, | ||
504 | EINA_MAGIC_STRINGSHARE_NODE, | ||
505 | EINA_MAGIC_STRINGSHARE_NODE_STR); | ||
506 | if (ret) | ||
507 | _eina_stringshare_small_init(); | ||
508 | |||
509 | return ret; | ||
510 | } | ||
511 | |||
512 | /** | ||
513 | * @internal | ||
514 | * @brief Shut down the share_common module. | ||
515 | * | ||
516 | * @return #EINA_TRUE on success, #EINA_FALSE on failure. | ||
517 | * | ||
518 | * This function shuts down the share_common module set up by | ||
519 | * eina_share_common_init(). It is called by eina_shutdown(). | ||
520 | * | ||
521 | * @see eina_shutdown() | ||
522 | */ | ||
523 | Eina_Bool | ||
524 | eina_stringshare_shutdown(void) | ||
525 | { | ||
526 | Eina_Bool ret; | ||
527 | _eina_stringshare_small_shutdown(); | ||
528 | ret = eina_share_common_shutdown(&stringshare_share); | ||
529 | return ret; | ||
530 | } | ||
531 | |||
532 | /*============================================================================* | ||
533 | * API * | ||
534 | *============================================================================*/ | ||
535 | |||
536 | EAPI void | ||
537 | eina_stringshare_del(const char *str) | ||
538 | { | ||
539 | int slen; | ||
540 | |||
541 | if (!str) | ||
542 | return; | ||
543 | |||
544 | /* special cases */ | ||
545 | if (str[0] == '\0') | ||
546 | slen = 0; | ||
547 | else if (str[1] == '\0') | ||
548 | slen = 1; | ||
549 | else if (str[2] == '\0') | ||
550 | slen = 2; | ||
551 | else if (str[3] == '\0') | ||
552 | slen = 3; | ||
553 | else | ||
554 | slen = 4; /* handled later */ | ||
555 | |||
556 | if (slen < 2) | ||
557 | return; | ||
558 | else if (slen < 4) | ||
559 | { | ||
560 | eina_share_common_population_del(stringshare_share, slen); | ||
561 | eina_lock_take(&_mutex_small); | ||
562 | _eina_stringshare_small_del(str, slen); | ||
563 | eina_lock_release(&_mutex_small); | ||
564 | return; | ||
565 | } | ||
566 | |||
567 | eina_share_common_del(stringshare_share, str); | ||
568 | } | ||
569 | |||
570 | EAPI const char * | ||
571 | eina_stringshare_add_length(const char *str, unsigned int slen) | ||
572 | { | ||
573 | if ((!str) || (slen <= 0)) | ||
574 | return ""; | ||
575 | else if (slen == 1) | ||
576 | return (const char *)_eina_stringshare_single + ((*str) << 1); | ||
577 | else if (slen < 4) | ||
578 | { | ||
579 | const char *s; | ||
580 | |||
581 | eina_lock_take(&_mutex_small); | ||
582 | s = _eina_stringshare_small_add(str, slen); | ||
583 | eina_lock_release(&_mutex_small); | ||
584 | return s; | ||
585 | } | ||
586 | |||
587 | return eina_share_common_add_length(stringshare_share, str, slen * | ||
588 | sizeof(char), sizeof(char)); | ||
589 | } | ||
590 | |||
591 | EAPI const char * | ||
592 | eina_stringshare_add(const char *str) | ||
593 | { | ||
594 | int slen; | ||
595 | if (!str) | ||
596 | return NULL; | ||
597 | |||
598 | if (str[0] == '\0') | ||
599 | slen = 0; | ||
600 | else if (str[1] == '\0') | ||
601 | slen = 1; | ||
602 | else if (str[2] == '\0') | ||
603 | slen = 2; | ||
604 | else if (str[3] == '\0') | ||
605 | slen = 3; | ||
606 | else | ||
607 | slen = 3 + (int)strlen(str + 3); | ||
608 | |||
609 | return eina_stringshare_add_length(str, slen); | ||
610 | } | ||
611 | |||
612 | EAPI const char * | ||
613 | eina_stringshare_printf(const char *fmt, ...) | ||
614 | { | ||
615 | va_list args; | ||
616 | char *tmp; | ||
617 | const char *ret; | ||
618 | int len; | ||
619 | |||
620 | if (!fmt) | ||
621 | return NULL; | ||
622 | |||
623 | va_start(args, fmt); | ||
624 | len = vasprintf(&tmp, fmt, args); | ||
625 | va_end(args); | ||
626 | |||
627 | if (len < 1) | ||
628 | return NULL; | ||
629 | |||
630 | ret = eina_stringshare_add_length(tmp, len); | ||
631 | free(tmp); | ||
632 | |||
633 | return ret; | ||
634 | } | ||
635 | |||
636 | EAPI const char * | ||
637 | eina_stringshare_vprintf(const char *fmt, va_list args) | ||
638 | { | ||
639 | char *tmp; | ||
640 | const char *ret; | ||
641 | int len; | ||
642 | |||
643 | if (!fmt) | ||
644 | return NULL; | ||
645 | |||
646 | len = vasprintf(&tmp, fmt, args); | ||
647 | |||
648 | if (len < 1) | ||
649 | return NULL; | ||
650 | |||
651 | ret = eina_stringshare_add_length(tmp, len); | ||
652 | free(tmp); | ||
653 | |||
654 | return ret; | ||
655 | } | ||
656 | |||
657 | EAPI const char * | ||
658 | eina_stringshare_nprintf(unsigned int len, const char *fmt, ...) | ||
659 | { | ||
660 | va_list args; | ||
661 | char *tmp; | ||
662 | int size; | ||
663 | |||
664 | if (!fmt) | ||
665 | return NULL; | ||
666 | |||
667 | if (len < 1) | ||
668 | return NULL; | ||
669 | |||
670 | tmp = alloca(sizeof(char) * len + 1); | ||
671 | |||
672 | va_start(args, fmt); | ||
673 | size = vsnprintf(tmp, len, fmt, args); | ||
674 | va_end(args); | ||
675 | |||
676 | if (size < 1) | ||
677 | return NULL; | ||
678 | |||
679 | return eina_stringshare_add_length(tmp, len); | ||
680 | } | ||
681 | |||
682 | EAPI const char * | ||
683 | eina_stringshare_ref(const char *str) | ||
684 | { | ||
685 | int slen; | ||
686 | |||
687 | if (!str) | ||
688 | return eina_share_common_ref(stringshare_share, str); | ||
689 | |||
690 | /* special cases */ | ||
691 | if (str[0] == '\0') | ||
692 | slen = 0; | ||
693 | else if (str[1] == '\0') | ||
694 | slen = 1; | ||
695 | else if (str[2] == '\0') | ||
696 | slen = 2; | ||
697 | else if (str[3] == '\0') | ||
698 | slen = 3; | ||
699 | else | ||
700 | slen = 3 + (int)strlen(str + 3); | ||
701 | |||
702 | if (slen < 2) | ||
703 | { | ||
704 | eina_share_common_population_add(stringshare_share, slen); | ||
705 | |||
706 | return str; | ||
707 | } | ||
708 | else if (slen < 4) | ||
709 | { | ||
710 | const char *s; | ||
711 | eina_share_common_population_add(stringshare_share, slen); | ||
712 | |||
713 | eina_lock_take(&_mutex_small); | ||
714 | s = _eina_stringshare_small_add(str, slen); | ||
715 | eina_lock_release(&_mutex_small); | ||
716 | |||
717 | return s; | ||
718 | } | ||
719 | |||
720 | return eina_share_common_ref(stringshare_share, str); | ||
721 | } | ||
722 | |||
723 | EAPI int | ||
724 | eina_stringshare_strlen(const char *str) | ||
725 | { | ||
726 | int len; | ||
727 | /* special cases */ | ||
728 | if (str[0] == '\0') | ||
729 | return 0; | ||
730 | |||
731 | if (str[1] == '\0') | ||
732 | return 1; | ||
733 | |||
734 | if (str[2] == '\0') | ||
735 | return 2; | ||
736 | |||
737 | if (str[3] == '\0') | ||
738 | return 3; | ||
739 | |||
740 | len = eina_share_common_length(stringshare_share, (const char *)str); | ||
741 | len = (len > 0) ? len / (int)sizeof(char) : -1; | ||
742 | return len; | ||
743 | } | ||
744 | |||
745 | EAPI void | ||
746 | eina_stringshare_dump(void) | ||
747 | { | ||
748 | eina_share_common_dump(stringshare_share, | ||
749 | _eina_stringshare_small_dump, | ||
750 | sizeof(_eina_stringshare_single)); | ||
751 | } | ||