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1 | /* | |
2 | * $RCSId: xc/lib/fontconfig/src/fclang.c,v 1.7 2002/08/26 23:34:31 keithp Exp $ | |
3 | * | |
4 | * Copyright © 2002 Keith Packard | |
5 | * | |
6 | * Permission to use, copy, modify, distribute, and sell this software and its | |
7 | * documentation for any purpose is hereby granted without fee, provided that | |
8 | * the above copyright notice appear in all copies and that both that | |
9 | * copyright notice and this permission notice appear in supporting | |
10 | * documentation, and that the name of Keith Packard not be used in | |
11 | * advertising or publicity pertaining to distribution of the software without | |
12 | * specific, written prior permission. Keith Packard makes no | |
13 | * representations about the suitability of this software for any purpose. It | |
14 | * is provided "as is" without express or implied warranty. | |
15 | * | |
16 | * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
17 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
18 | * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
19 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
20 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
21 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR | |
22 | * PERFORMANCE OF THIS SOFTWARE. | |
23 | */ | |
24 | ||
25 | #include "fcint.h" | |
26 | ||
27 | typedef struct { | |
28 | const FcChar8 *lang; | |
29 | const FcCharSet charset; | |
30 | } FcLangCharSet; | |
31 | ||
32 | typedef struct { | |
33 | int begin; | |
34 | int end; | |
35 | } FcLangCharSetRange; | |
36 | ||
37 | #include "../fc-lang/fclang.h" | |
38 | ||
39 | struct _FcLangSet { | |
40 | FcChar32 map[NUM_LANG_SET_MAP]; | |
41 | FcStrSet *extra; | |
42 | }; | |
43 | ||
44 | #define FcLangSetBitSet(ls, id) ((ls)->map[(id)>>5] |= ((FcChar32) 1 << ((id) & 0x1f))) | |
45 | #define FcLangSetBitGet(ls, id) (((ls)->map[(id)>>5] >> ((id) & 0x1f)) & 1) | |
46 | ||
47 | static FcBool langsets_populated = FcFalse; | |
48 | ||
49 | FcLangSet * | |
50 | FcFreeTypeLangSet (const FcCharSet *charset, | |
51 | const FcChar8 *exclusiveLang) | |
52 | { | |
53 | int i, j; | |
54 | FcChar32 missing; | |
55 | const FcCharSet *exclusiveCharset = 0; | |
56 | FcLangSet *ls; | |
57 | ||
58 | if (!langsets_populated) | |
59 | { | |
60 | FcLangCharSetPopulate (); | |
61 | langsets_populated = FcTrue; | |
62 | } | |
63 | ||
64 | if (exclusiveLang) | |
65 | exclusiveCharset = FcCharSetForLang (exclusiveLang); | |
66 | ls = FcLangSetCreate (); | |
67 | if (!ls) | |
68 | return 0; | |
69 | for (i = 0; i < NUM_LANG_CHAR_SET; i++) | |
70 | { | |
71 | /* | |
72 | * Check for Han charsets to make fonts | |
73 | * which advertise support for a single language | |
74 | * not support other Han languages | |
75 | */ | |
76 | if (exclusiveCharset && | |
77 | FcFreeTypeIsExclusiveLang (fcLangCharSets[i].lang)) | |
78 | { | |
79 | if (fcLangCharSets[i].charset.num != exclusiveCharset->num) | |
80 | continue; | |
81 | ||
82 | for (j = 0; j < fcLangCharSets[i].charset.num; j++) | |
83 | if (FcCharSetGetLeaf(&fcLangCharSets[i].charset, j) != | |
84 | FcCharSetGetLeaf(exclusiveCharset, j)) | |
85 | continue; | |
86 | } | |
87 | missing = FcCharSetSubtractCount (&fcLangCharSets[i].charset, charset); | |
88 | if (FcDebug() & FC_DBG_SCANV) | |
89 | { | |
90 | if (missing && missing < 10) | |
91 | { | |
92 | FcCharSet *missed = FcCharSetSubtract (&fcLangCharSets[i].charset, | |
93 | charset); | |
94 | FcChar32 ucs4; | |
95 | FcChar32 map[FC_CHARSET_MAP_SIZE]; | |
96 | FcChar32 next; | |
97 | ||
98 | printf ("\n%s(%u) ", fcLangCharSets[i].lang, missing); | |
99 | printf ("{"); | |
100 | for (ucs4 = FcCharSetFirstPage (missed, map, &next); | |
101 | ucs4 != FC_CHARSET_DONE; | |
102 | ucs4 = FcCharSetNextPage (missed, map, &next)) | |
103 | { | |
104 | int i, j; | |
105 | for (i = 0; i < FC_CHARSET_MAP_SIZE; i++) | |
106 | if (map[i]) | |
107 | { | |
108 | for (j = 0; j < 32; j++) | |
109 | if (map[i] & (1 << j)) | |
110 | printf (" %04x", ucs4 + i * 32 + j); | |
111 | } | |
112 | } | |
113 | printf (" }\n\t"); | |
114 | FcCharSetDestroy (missed); | |
115 | } | |
116 | else | |
117 | printf ("%s(%u) ", fcLangCharSets[i].lang, missing); | |
118 | } | |
119 | if (!missing) | |
120 | FcLangSetBitSet (ls, i); | |
121 | } | |
122 | ||
123 | if (FcDebug() & FC_DBG_SCANV) | |
124 | printf ("\n"); | |
125 | ||
126 | ||
127 | return ls; | |
128 | } | |
129 | ||
130 | #define FcLangEnd(c) ((c) == '-' || (c) == '\0') | |
131 | ||
132 | FcLangResult | |
133 | FcLangCompare (const FcChar8 *s1, const FcChar8 *s2) | |
134 | { | |
135 | FcChar8 c1, c2; | |
136 | FcLangResult result = FcLangDifferentLang; | |
137 | ||
138 | for (;;) | |
139 | { | |
140 | c1 = *s1++; | |
141 | c2 = *s2++; | |
142 | ||
143 | c1 = FcToLower (c1); | |
144 | c2 = FcToLower (c2); | |
145 | if (c1 != c2) | |
146 | { | |
147 | if (FcLangEnd (c1) && FcLangEnd (c2)) | |
148 | result = FcLangDifferentCountry; | |
149 | return result; | |
150 | } | |
151 | else if (!c1) | |
152 | return FcLangEqual; | |
153 | else if (c1 == '-') | |
154 | result = FcLangDifferentCountry; | |
155 | } | |
156 | } | |
157 | ||
158 | /* | |
159 | * Return FcTrue when super contains sub. | |
160 | * | |
161 | * super contains sub if super and sub have the same | |
162 | * language and either the same country or one | |
163 | * is missing the country | |
164 | */ | |
165 | ||
166 | static FcBool | |
167 | FcLangContains (const FcChar8 *super, const FcChar8 *sub) | |
168 | { | |
169 | FcChar8 c1, c2; | |
170 | ||
171 | for (;;) | |
172 | { | |
173 | c1 = *super++; | |
174 | c2 = *sub++; | |
175 | ||
176 | c1 = FcToLower (c1); | |
177 | c2 = FcToLower (c2); | |
178 | if (c1 != c2) | |
179 | { | |
180 | /* see if super has a country while sub is mising one */ | |
181 | if (c1 == '-' && c2 == '\0') | |
182 | return FcTrue; | |
183 | /* see if sub has a country while super is mising one */ | |
184 | if (c1 == '\0' && c2 == '-') | |
185 | return FcTrue; | |
186 | return FcFalse; | |
187 | } | |
188 | else if (!c1) | |
189 | return FcTrue; | |
190 | } | |
191 | } | |
192 | ||
193 | const FcCharSet * | |
194 | FcCharSetForLang (const FcChar8 *lang) | |
195 | { | |
196 | int i; | |
197 | int country = -1; | |
198 | ||
199 | if (!langsets_populated) | |
200 | { | |
201 | FcLangCharSetPopulate (); | |
202 | langsets_populated = FcTrue; | |
203 | } | |
204 | ||
205 | for (i = 0; i < NUM_LANG_CHAR_SET; i++) | |
206 | { | |
207 | switch (FcLangCompare (lang, fcLangCharSets[i].lang)) { | |
208 | case FcLangEqual: | |
209 | return &fcLangCharSets[i].charset; | |
210 | case FcLangDifferentCountry: | |
211 | if (country == -1) | |
212 | country = i; | |
213 | default: | |
214 | break; | |
215 | } | |
216 | } | |
217 | if (country == -1) | |
218 | return 0; | |
219 | return &fcLangCharSets[country].charset; | |
220 | } | |
221 | ||
222 | FcLangSet * | |
223 | FcLangSetCreate (void) | |
224 | { | |
225 | FcLangSet *ls; | |
226 | ||
227 | ls = malloc (sizeof (FcLangSet)); | |
228 | if (!ls) | |
229 | return 0; | |
230 | FcMemAlloc (FC_MEM_LANGSET, sizeof (FcLangSet)); | |
231 | memset (ls->map, '\0', sizeof (ls->map)); | |
232 | ls->extra = 0; | |
233 | return ls; | |
234 | } | |
235 | ||
236 | void | |
237 | FcLangSetDestroy (FcLangSet *ls) | |
238 | { | |
239 | if (ls->extra) | |
240 | FcStrSetDestroy (ls->extra); | |
241 | FcMemFree (FC_MEM_LANGSET, sizeof (FcLangSet)); | |
242 | free (ls); | |
243 | } | |
244 | ||
245 | FcLangSet * | |
246 | FcLangSetCopy (const FcLangSet *ls) | |
247 | { | |
248 | FcLangSet *new; | |
249 | ||
250 | new = FcLangSetCreate (); | |
251 | if (!new) | |
252 | goto bail0; | |
253 | memcpy (new->map, ls->map, sizeof (new->map)); | |
254 | if (ls->extra) | |
255 | { | |
256 | FcStrList *list; | |
257 | FcChar8 *extra; | |
258 | ||
259 | new->extra = FcStrSetCreate (); | |
260 | if (!new->extra) | |
261 | goto bail1; | |
262 | ||
263 | list = FcStrListCreate (ls->extra); | |
264 | if (!list) | |
265 | goto bail1; | |
266 | ||
267 | while ((extra = FcStrListNext (list))) | |
268 | if (!FcStrSetAdd (new->extra, extra)) | |
269 | { | |
270 | FcStrListDone (list); | |
271 | goto bail1; | |
272 | } | |
273 | FcStrListDone (list); | |
274 | } | |
275 | return new; | |
276 | bail1: | |
277 | FcLangSetDestroy (new); | |
278 | bail0: | |
279 | return 0; | |
280 | } | |
281 | ||
282 | static int | |
283 | FcLangSetIndex (const FcChar8 *lang) | |
284 | { | |
285 | int low, high, mid = 0; | |
286 | int cmp = 0; | |
287 | FcChar8 firstChar = FcToLower(lang[0]); | |
288 | FcChar8 secondChar = firstChar ? FcToLower(lang[1]) : '\0'; | |
289 | ||
290 | if (firstChar < 'a') | |
291 | { | |
292 | low = 0; | |
293 | high = fcLangCharSetRanges[0].begin; | |
294 | } | |
295 | else if(firstChar > 'z') | |
296 | { | |
297 | low = fcLangCharSetRanges[25].begin; | |
298 | high = NUM_LANG_CHAR_SET - 1; | |
299 | } | |
300 | else | |
301 | { | |
302 | low = fcLangCharSetRanges[firstChar - 'a'].begin; | |
303 | high = fcLangCharSetRanges[firstChar - 'a'].end; | |
304 | /* no matches */ | |
305 | if (low > high) | |
306 | return -low; /* next entry after where it would be */ | |
307 | } | |
308 | ||
309 | while (low <= high) | |
310 | { | |
311 | mid = (high + low) >> 1; | |
312 | if(fcLangCharSets[mid].lang[0] != firstChar) | |
313 | cmp = FcStrCmpIgnoreCase(fcLangCharSets[mid].lang, lang); | |
314 | else | |
315 | { /* fast path for resolving 2-letter languages (by far the most common) after | |
316 | * finding the first char (probably already true because of the hash table) */ | |
317 | cmp = fcLangCharSets[mid].lang[1] - secondChar; | |
318 | if (cmp == 0 && | |
319 | (fcLangCharSets[mid].lang[2] != '\0' || | |
320 | lang[2] != '\0')) | |
321 | { | |
322 | cmp = FcStrCmpIgnoreCase(fcLangCharSets[mid].lang+2, | |
323 | lang+2); | |
324 | } | |
325 | } | |
326 | if (cmp == 0) | |
327 | return mid; | |
328 | if (cmp < 0) | |
329 | low = mid + 1; | |
330 | else | |
331 | high = mid - 1; | |
332 | } | |
333 | if (cmp < 0) | |
334 | mid++; | |
335 | return -(mid + 1); | |
336 | } | |
337 | ||
338 | FcBool | |
339 | FcLangSetAdd (FcLangSet *ls, const FcChar8 *lang) | |
340 | { | |
341 | int id; | |
342 | ||
343 | id = FcLangSetIndex (lang); | |
344 | if (id >= 0) | |
345 | { | |
346 | FcLangSetBitSet (ls, id); | |
347 | return FcTrue; | |
348 | } | |
349 | if (!ls->extra) | |
350 | { | |
351 | ls->extra = FcStrSetCreate (); | |
352 | if (!ls->extra) | |
353 | return FcFalse; | |
354 | } | |
355 | return FcStrSetAdd (ls->extra, lang); | |
356 | } | |
357 | ||
358 | FcLangResult | |
359 | FcLangSetHasLang (const FcLangSet *ls, const FcChar8 *lang) | |
360 | { | |
361 | int id; | |
362 | FcLangResult best, r; | |
363 | int i; | |
364 | ||
365 | id = FcLangSetIndex (lang); | |
366 | if (id < 0) | |
367 | id = -id - 1; | |
368 | else if (FcLangSetBitGet (ls, id)) | |
369 | return FcLangEqual; | |
370 | best = FcLangDifferentLang; | |
371 | for (i = id - 1; i >= 0; i--) | |
372 | { | |
373 | r = FcLangCompare (lang, fcLangCharSets[i].lang); | |
374 | if (r == FcLangDifferentLang) | |
375 | break; | |
376 | if (FcLangSetBitGet (ls, i) && r < best) | |
377 | best = r; | |
378 | } | |
379 | for (i = id; i < NUM_LANG_CHAR_SET; i++) | |
380 | { | |
381 | r = FcLangCompare (lang, fcLangCharSets[i].lang); | |
382 | if (r == FcLangDifferentLang) | |
383 | break; | |
384 | if (FcLangSetBitGet (ls, i) && r < best) | |
385 | best = r; | |
386 | } | |
387 | if (ls->extra) | |
388 | { | |
389 | FcStrList *list = FcStrListCreate (ls->extra); | |
390 | FcChar8 *extra; | |
391 | ||
392 | if (list) | |
393 | { | |
394 | while (best > FcLangEqual && (extra = FcStrListNext (list))) | |
395 | { | |
396 | r = FcLangCompare (lang, extra); | |
397 | if (r < best) | |
398 | best = r; | |
399 | } | |
400 | FcStrListDone (list); | |
401 | } | |
402 | } | |
403 | return best; | |
404 | } | |
405 | ||
406 | static FcLangResult | |
407 | FcLangSetCompareStrSet (const FcLangSet *ls, FcStrSet *set) | |
408 | { | |
409 | FcStrList *list = FcStrListCreate (set); | |
410 | FcLangResult r, best = FcLangDifferentLang; | |
411 | FcChar8 *extra; | |
412 | ||
413 | if (list) | |
414 | { | |
415 | while (best > FcLangEqual && (extra = FcStrListNext (list))) | |
416 | { | |
417 | r = FcLangSetHasLang (ls, extra); | |
418 | if (r < best) | |
419 | best = r; | |
420 | } | |
421 | FcStrListDone (list); | |
422 | } | |
423 | return best; | |
424 | } | |
425 | ||
426 | FcLangResult | |
427 | FcLangSetCompare (const FcLangSet *lsa, const FcLangSet *lsb) | |
428 | { | |
429 | int i, j; | |
430 | FcLangResult best, r; | |
431 | ||
432 | for (i = 0; i < NUM_LANG_SET_MAP; i++) | |
433 | if (lsa->map[i] & lsb->map[i]) | |
434 | return FcLangEqual; | |
435 | best = FcLangDifferentLang; | |
436 | for (j = 0; j < NUM_COUNTRY_SET; j++) | |
437 | for (i = 0; i < NUM_LANG_SET_MAP; i++) | |
438 | if ((lsa->map[i] & fcLangCountrySets[j][i]) && | |
439 | (lsb->map[i] & fcLangCountrySets[j][i])) | |
440 | { | |
441 | best = FcLangDifferentCountry; | |
442 | break; | |
443 | } | |
444 | if (lsa->extra) | |
445 | { | |
446 | r = FcLangSetCompareStrSet (lsb, lsa->extra); | |
447 | if (r < best) | |
448 | best = r; | |
449 | } | |
450 | if (best > FcLangEqual && lsb->extra) | |
451 | { | |
452 | r = FcLangSetCompareStrSet (lsa, lsb->extra); | |
453 | if (r < best) | |
454 | best = r; | |
455 | } | |
456 | return best; | |
457 | } | |
458 | ||
459 | /* | |
460 | * Used in computing values -- mustn't allocate any storage | |
461 | */ | |
462 | FcLangSet * | |
463 | FcLangSetPromote (const FcChar8 *lang) | |
464 | { | |
465 | static FcLangSet ls; | |
466 | static FcStrSet strs; | |
467 | static FcChar8 *str; | |
468 | int id; | |
469 | ||
470 | memset (ls.map, '\0', sizeof (ls.map)); | |
471 | ls.extra = 0; | |
472 | id = FcLangSetIndex (lang); | |
473 | if (id > 0) | |
474 | { | |
475 | FcLangSetBitSet (&ls, id); | |
476 | } | |
477 | else | |
478 | { | |
479 | ls.extra = &strs; | |
480 | strs.num = 1; | |
481 | strs.size = 1; | |
482 | strs.strs = &str; | |
483 | strs.ref = 1; | |
484 | str = (FcChar8 *) lang; | |
485 | } | |
486 | return &ls; | |
487 | } | |
488 | ||
489 | FcChar32 | |
490 | FcLangSetHash (const FcLangSet *ls) | |
491 | { | |
492 | FcChar32 h = 0; | |
493 | int i; | |
494 | ||
495 | for (i = 0; i < NUM_LANG_SET_MAP; i++) | |
496 | h ^= ls->map[i]; | |
497 | if (ls->extra) | |
498 | h ^= ls->extra->num; | |
499 | return h; | |
500 | } | |
501 | ||
502 | FcLangSet * | |
503 | FcNameParseLangSet (const FcChar8 *string) | |
504 | { | |
505 | FcChar8 lang[32],c; | |
506 | int i; | |
507 | FcLangSet *ls; | |
508 | ||
509 | ls = FcLangSetCreate (); | |
510 | if (!ls) | |
511 | goto bail0; | |
512 | ||
513 | for(;;) | |
514 | { | |
515 | for(i = 0; i < 31;i++) | |
516 | { | |
517 | c = *string++; | |
518 | if(c == '\0' || c == '|') | |
519 | break; /* end of this code */ | |
520 | lang[i] = c; | |
521 | } | |
522 | lang[i] = '\0'; | |
523 | if (!FcLangSetAdd (ls, lang)) | |
524 | goto bail1; | |
525 | if(c == '\0') | |
526 | break; | |
527 | } | |
528 | return ls; | |
529 | bail1: | |
530 | FcLangSetDestroy (ls); | |
531 | bail0: | |
532 | return 0; | |
533 | } | |
534 | ||
535 | FcBool | |
536 | FcNameUnparseLangSet (FcStrBuf *buf, const FcLangSet *ls) | |
537 | { | |
538 | int i, bit; | |
539 | FcChar32 bits; | |
540 | FcBool first = FcTrue; | |
541 | ||
542 | for (i = 0; i < NUM_LANG_SET_MAP; i++) | |
543 | { | |
544 | if ((bits = ls->map[i])) | |
545 | { | |
546 | for (bit = 0; bit <= 31; bit++) | |
547 | if (bits & (1 << bit)) | |
548 | { | |
549 | int id = (i << 5) | bit; | |
550 | if (!first) | |
551 | if (!FcStrBufChar (buf, '|')) | |
552 | return FcFalse; | |
553 | if (!FcStrBufString (buf, fcLangCharSets[id].lang)) | |
554 | return FcFalse; | |
555 | first = FcFalse; | |
556 | } | |
557 | } | |
558 | } | |
559 | if (ls->extra) | |
560 | { | |
561 | FcStrList *list = FcStrListCreate (ls->extra); | |
562 | FcChar8 *extra; | |
563 | ||
564 | if (!list) | |
565 | return FcFalse; | |
566 | while ((extra = FcStrListNext (list))) | |
567 | { | |
568 | if (!first) | |
569 | if (!FcStrBufChar (buf, '|')) | |
570 | { | |
571 | FcStrListDone (list); | |
572 | return FcFalse; | |
573 | } | |
574 | if (!FcStrBufString (buf, extra)) | |
575 | { | |
576 | FcStrListDone (list); | |
577 | return FcFalse; | |
578 | } | |
579 | first = FcFalse; | |
580 | } | |
581 | } | |
582 | return FcTrue; | |
583 | } | |
584 | ||
585 | FcBool | |
586 | FcLangSetEqual (const FcLangSet *lsa, const FcLangSet *lsb) | |
587 | { | |
588 | int i; | |
589 | ||
590 | for (i = 0; i < NUM_LANG_SET_MAP; i++) | |
591 | { | |
592 | if (lsa->map[i] != lsb->map[i]) | |
593 | return FcFalse; | |
594 | } | |
595 | if (!lsa->extra && !lsb->extra) | |
596 | return FcTrue; | |
597 | if (lsa->extra && lsb->extra) | |
598 | return FcStrSetEqual (lsa->extra, lsb->extra); | |
599 | return FcFalse; | |
600 | } | |
601 | ||
602 | static FcBool | |
603 | FcLangSetContainsLang (const FcLangSet *ls, const FcChar8 *lang) | |
604 | { | |
605 | int id; | |
606 | int i; | |
607 | ||
608 | id = FcLangSetIndex (lang); | |
609 | if (id < 0) | |
610 | id = -id - 1; | |
611 | else if (FcLangSetBitGet (ls, id)) | |
612 | return FcTrue; | |
613 | /* | |
614 | * search up and down among equal languages for a match | |
615 | */ | |
616 | for (i = id - 1; i >= 0; i--) | |
617 | { | |
618 | if (FcLangCompare (fcLangCharSets[i].lang, lang) == FcLangDifferentLang) | |
619 | break; | |
620 | if (FcLangSetBitGet (ls, i) && | |
621 | FcLangContains (fcLangCharSets[i].lang, lang)) | |
622 | return FcTrue; | |
623 | } | |
624 | for (i = id; i < NUM_LANG_CHAR_SET; i++) | |
625 | { | |
626 | if (FcLangCompare (fcLangCharSets[i].lang, lang) == FcLangDifferentLang) | |
627 | break; | |
628 | if (FcLangSetBitGet (ls, i) && | |
629 | FcLangContains (fcLangCharSets[i].lang, lang)) | |
630 | return FcTrue; | |
631 | } | |
632 | if (ls->extra) | |
633 | { | |
634 | FcStrList *list = FcStrListCreate (ls->extra); | |
635 | FcChar8 *extra; | |
636 | ||
637 | if (list) | |
638 | { | |
639 | while ((extra = FcStrListNext (list))) | |
640 | { | |
641 | if (FcLangContains (extra, lang)) | |
642 | break; | |
643 | } | |
644 | FcStrListDone (list); | |
645 | if (extra) | |
646 | return FcTrue; | |
647 | } | |
648 | } | |
649 | return FcFalse; | |
650 | } | |
651 | ||
652 | /* | |
653 | * return FcTrue if lsa contains every language in lsb | |
654 | */ | |
655 | FcBool | |
656 | FcLangSetContains (const FcLangSet *lsa, const FcLangSet *lsb) | |
657 | { | |
658 | int i, j; | |
659 | FcChar32 missing; | |
660 | ||
661 | if (FcDebug() & FC_DBG_MATCHV) | |
662 | { | |
663 | printf ("FcLangSet "); FcLangSetPrint (lsa); | |
664 | printf (" contains "); FcLangSetPrint (lsb); | |
665 | printf ("\n"); | |
666 | } | |
667 | /* | |
668 | * check bitmaps for missing language support | |
669 | */ | |
670 | for (i = 0; i < NUM_LANG_SET_MAP; i++) | |
671 | { | |
672 | missing = lsb->map[i] & ~lsa->map[i]; | |
673 | if (missing) | |
674 | { | |
675 | for (j = 0; j < 32; j++) | |
676 | if (missing & (1 << j)) | |
677 | { | |
678 | if (!FcLangSetContainsLang (lsa, | |
679 | fcLangCharSets[i*32 + j].lang)) | |
680 | { | |
681 | if (FcDebug() & FC_DBG_MATCHV) | |
682 | printf ("\tMissing bitmap %s\n", fcLangCharSets[i*32+j].lang); | |
683 | return FcFalse; | |
684 | } | |
685 | } | |
686 | } | |
687 | } | |
688 | if (lsb->extra) | |
689 | { | |
690 | FcStrList *list = FcStrListCreate (lsb->extra); | |
691 | FcChar8 *extra; | |
692 | ||
693 | if (list) | |
694 | { | |
695 | while ((extra = FcStrListNext (list))) | |
696 | { | |
697 | if (!FcLangSetContainsLang (lsa, extra)) | |
698 | { | |
699 | if (FcDebug() & FC_DBG_MATCHV) | |
700 | printf ("\tMissing string %s\n", extra); | |
701 | break; | |
702 | } | |
703 | } | |
704 | FcStrListDone (list); | |
705 | if (extra) | |
706 | return FcFalse; | |
707 | } | |
708 | } | |
709 | return FcTrue; | |
710 | } | |
711 | ||
712 | static FcLangSet ** langsets = 0; | |
713 | static int langset_bank_count = 0, langset_ptr = 0, langset_count = 0; | |
714 | ||
715 | void | |
716 | FcLangSetNewBank (void) | |
717 | { | |
718 | langset_count = 0; | |
719 | } | |
720 | ||
721 | /* ideally, should only write one copy of any particular FcLangSet */ | |
722 | int | |
723 | FcLangSetNeededBytes (const FcLangSet *l) | |
724 | { | |
725 | langset_count++; | |
726 | return sizeof (FcLangSet); | |
727 | } | |
728 | ||
729 | int | |
730 | FcLangSetNeededBytesAlign (void) | |
731 | { | |
732 | return fc_alignof (FcLangSet); | |
733 | } | |
734 | ||
735 | static FcBool | |
736 | FcLangSetEnsureBank (int bi) | |
737 | { | |
738 | if (!langsets || bi >= langset_bank_count) | |
739 | { | |
740 | int new_count = langset_bank_count + 2; | |
741 | int i; | |
742 | FcLangSet** tt; | |
743 | tt = realloc(langsets, new_count * sizeof(FcLangSet *)); | |
744 | if (!tt) | |
745 | return FcFalse; | |
746 | ||
747 | langsets = tt; | |
748 | for (i = langset_bank_count; i < new_count; i++) | |
749 | langsets[i] = 0; | |
750 | langset_bank_count = new_count; | |
751 | } | |
752 | ||
753 | return FcTrue; | |
754 | } | |
755 | ||
756 | void * | |
757 | FcLangSetDistributeBytes (FcCache * metadata, void * block_ptr) | |
758 | { | |
759 | int bi = FcCacheBankToIndex(metadata->bank); | |
760 | if (!FcLangSetEnsureBank(bi)) | |
761 | return 0; | |
762 | ||
763 | block_ptr = ALIGN(block_ptr, FcLangSet); | |
764 | langsets[bi] = block_ptr; | |
765 | block_ptr = (void *)((char *)block_ptr + | |
766 | langset_count * sizeof(FcLangSet)); | |
767 | langset_ptr = 0; | |
768 | metadata->langset_count = langset_count; | |
769 | return block_ptr; | |
770 | } | |
771 | ||
772 | FcLangSet * | |
773 | FcLangSetSerialize(int bank, FcLangSet *l) | |
774 | { | |
775 | int p = langset_ptr, bi = FcCacheBankToIndex(bank); | |
776 | ||
777 | if (!l) return 0; | |
778 | ||
779 | langsets[bi][langset_ptr] = *l; | |
780 | langsets[bi][langset_ptr].extra = 0; | |
781 | langset_ptr++; | |
782 | return &langsets[bi][p]; | |
783 | } | |
784 | ||
785 | void * | |
786 | FcLangSetUnserialize (FcCache * metadata, void *block_ptr) | |
787 | { | |
788 | int bi = FcCacheBankToIndex(metadata->bank); | |
789 | if (!FcLangSetEnsureBank(bi)) | |
790 | return 0; | |
791 | ||
792 | FcMemAlloc (FC_MEM_LANGSET, metadata->langset_count * sizeof(FcLangSet)); | |
793 | block_ptr = ALIGN(block_ptr, FcLangSet); | |
794 | langsets[bi] = (FcLangSet *)block_ptr; | |
795 | block_ptr = (void *)((char *)block_ptr + | |
796 | metadata->langset_count * sizeof(FcLangSet)); | |
797 | return block_ptr; | |
798 | } |