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24330d27 | 1 | /* |
793e946c | 2 | * $RCSId: xc/lib/fontconfig/src/fclist.c,v 1.11tsi Exp $ |
24330d27 | 3 | * |
46b51147 | 4 | * Copyright © 2000 Keith Packard |
24330d27 KP |
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 <stdlib.h> | |
26 | #include "fcint.h" | |
27 | ||
28 | FcObjectSet * | |
29 | FcObjectSetCreate (void) | |
30 | { | |
31 | FcObjectSet *os; | |
32 | ||
33 | os = (FcObjectSet *) malloc (sizeof (FcObjectSet)); | |
34 | if (!os) | |
35 | return 0; | |
36 | FcMemAlloc (FC_MEM_OBJECTSET, sizeof (FcObjectSet)); | |
37 | os->nobject = 0; | |
38 | os->sobject = 0; | |
39 | os->objects = 0; | |
40 | return os; | |
41 | } | |
42 | ||
43 | FcBool | |
44 | FcObjectSetAdd (FcObjectSet *os, const char *object) | |
45 | { | |
46 | int s; | |
47 | const char **objects; | |
e9be9cd1 | 48 | int high, low, mid, c; |
24330d27 KP |
49 | |
50 | if (os->nobject == os->sobject) | |
51 | { | |
52 | s = os->sobject + 4; | |
53 | if (os->objects) | |
54 | objects = (const char **) realloc ((void *) os->objects, | |
55 | s * sizeof (const char *)); | |
56 | else | |
57 | objects = (const char **) malloc (s * sizeof (const char *)); | |
58 | if (!objects) | |
59 | return FcFalse; | |
60 | if (os->sobject) | |
61 | FcMemFree (FC_MEM_OBJECTPTR, os->sobject * sizeof (const char *)); | |
62 | FcMemAlloc (FC_MEM_OBJECTPTR, s * sizeof (const char *)); | |
63 | os->objects = objects; | |
64 | os->sobject = s; | |
65 | } | |
e9be9cd1 KP |
66 | high = os->nobject - 1; |
67 | low = 0; | |
68 | mid = 0; | |
69 | c = 1; | |
70 | while (low <= high) | |
71 | { | |
72 | mid = (low + high) >> 1; | |
73 | c = strcmp (os->objects[mid], object); | |
74 | if (c == 0) | |
75 | return FcTrue; | |
76 | if (c < 0) | |
77 | low = mid + 1; | |
78 | else | |
79 | high = mid - 1; | |
80 | } | |
81 | if (c < 0) | |
82 | mid++; | |
5b1bfa5d KP |
83 | memmove (os->objects + mid + 1, os->objects + mid, |
84 | (os->nobject - mid) * sizeof (const char *)); | |
1c52c0f0 | 85 | os->objects[mid] = FcObjectStaticName (object); |
e9be9cd1 | 86 | os->nobject++; |
24330d27 KP |
87 | return FcTrue; |
88 | } | |
89 | ||
90 | void | |
91 | FcObjectSetDestroy (FcObjectSet *os) | |
92 | { | |
93 | if (os->objects) | |
94 | { | |
95 | FcMemFree (FC_MEM_OBJECTPTR, os->sobject * sizeof (const char *)); | |
96 | free ((void *) os->objects); | |
97 | } | |
98 | FcMemFree (FC_MEM_OBJECTSET, sizeof (FcObjectSet)); | |
99 | free (os); | |
100 | } | |
101 | ||
102 | FcObjectSet * | |
103 | FcObjectSetVaBuild (const char *first, va_list va) | |
104 | { | |
105 | FcObjectSet *ret; | |
106 | ||
107 | FcObjectSetVapBuild (ret, first, va); | |
108 | return ret; | |
109 | } | |
110 | ||
111 | FcObjectSet * | |
112 | FcObjectSetBuild (const char *first, ...) | |
113 | { | |
114 | va_list va; | |
115 | FcObjectSet *os; | |
116 | ||
117 | va_start (va, first); | |
118 | FcObjectSetVapBuild (os, first, va); | |
119 | va_end (va); | |
120 | return os; | |
121 | } | |
122 | ||
74a623e0 KP |
123 | /* |
124 | * Font must have a containing value for every value in the pattern | |
125 | */ | |
24330d27 | 126 | static FcBool |
74a623e0 KP |
127 | FcListValueListMatchAny (FcValueList *patOrig, /* pattern */ |
128 | FcValueList *fntOrig) /* font */ | |
24330d27 | 129 | { |
74a623e0 | 130 | FcValueList *pat, *fnt; |
24330d27 | 131 | |
74a623e0 KP |
132 | for (pat = patOrig; pat; pat = pat->next) |
133 | { | |
134 | for (fnt = fntOrig; fnt; fnt = fnt->next) | |
135 | { | |
136 | /* | |
137 | * make sure the font 'contains' the pattern. | |
138 | * (OpListing is OpContains except for strings | |
139 | * where it requires an exact match) | |
140 | */ | |
141 | if (FcConfigCompareValue (fnt->value, | |
142 | FcOpListing, | |
143 | pat->value)) | |
144 | break; | |
145 | } | |
146 | if (!fnt) | |
147 | return FcFalse; | |
148 | } | |
149 | return FcTrue; | |
24330d27 KP |
150 | } |
151 | ||
152 | static FcBool | |
153 | FcListValueListEqual (FcValueList *v1orig, | |
154 | FcValueList *v2orig) | |
155 | { | |
156 | FcValueList *v1, *v2; | |
157 | ||
158 | for (v1 = v1orig; v1; v1 = v1->next) | |
159 | { | |
160 | for (v2 = v2orig; v2; v2 = v2->next) | |
47d4f950 | 161 | if (FcValueEqual (v1->value, v2->value)) |
24330d27 KP |
162 | break; |
163 | if (!v2) | |
164 | return FcFalse; | |
165 | } | |
166 | for (v2 = v2orig; v2; v2 = v2->next) | |
167 | { | |
168 | for (v1 = v1orig; v1; v1 = v1->next) | |
47d4f950 | 169 | if (FcValueEqual (v1->value, v2->value)) |
24330d27 KP |
170 | break; |
171 | if (!v1) | |
172 | return FcFalse; | |
173 | } | |
174 | return FcTrue; | |
175 | } | |
176 | ||
24330d27 | 177 | static FcBool |
e9be9cd1 KP |
178 | FcListPatternEqual (FcPattern *p1, |
179 | FcPattern *p2, | |
180 | FcObjectSet *os) | |
24330d27 KP |
181 | { |
182 | int i; | |
e9be9cd1 | 183 | FcPatternElt *e1, *e2; |
24330d27 | 184 | |
e9be9cd1 | 185 | for (i = 0; i < os->nobject; i++) |
24330d27 | 186 | { |
e9be9cd1 KP |
187 | e1 = FcPatternFindElt (p1, os->objects[i]); |
188 | e2 = FcPatternFindElt (p2, os->objects[i]); | |
189 | if (!e1 && !e2) | |
47d4f950 | 190 | continue; |
e9be9cd1 | 191 | if (!e1 || !e2) |
24330d27 | 192 | return FcFalse; |
e9be9cd1 | 193 | if (!FcListValueListEqual (e1->values, e2->values)) |
24330d27 KP |
194 | return FcFalse; |
195 | } | |
196 | return FcTrue; | |
197 | } | |
198 | ||
e9be9cd1 KP |
199 | /* |
200 | * FcTrue iff all objects in "p" match "font" | |
201 | */ | |
202 | ||
4f27c1c0 KP |
203 | FcBool |
204 | FcListPatternMatchAny (const FcPattern *p, | |
205 | const FcPattern *font) | |
24330d27 KP |
206 | { |
207 | int i; | |
e9be9cd1 | 208 | FcPatternElt *e; |
24330d27 | 209 | |
e9be9cd1 | 210 | for (i = 0; i < p->num; i++) |
24330d27 | 211 | { |
e9be9cd1 KP |
212 | e = FcPatternFindElt (font, p->elts[i].object); |
213 | if (!e) | |
24330d27 | 214 | return FcFalse; |
74a623e0 KP |
215 | if (!FcListValueListMatchAny (p->elts[i].values, /* pat elts */ |
216 | e->values)) /* font elts */ | |
24330d27 KP |
217 | return FcFalse; |
218 | } | |
219 | return FcTrue; | |
220 | } | |
221 | ||
222 | static FcChar32 | |
223 | FcListStringHash (const FcChar8 *s) | |
224 | { | |
225 | FcChar32 h = 0; | |
226 | FcChar8 c; | |
227 | ||
228 | while ((c = *s++)) | |
229 | { | |
230 | c = FcToLower (c); | |
231 | h = ((h << 3) ^ (h >> 3)) ^ c; | |
232 | } | |
233 | return h; | |
234 | } | |
235 | ||
236 | static FcChar32 | |
237 | FcListMatrixHash (const FcMatrix *m) | |
238 | { | |
239 | int xx = (int) (m->xx * 100), | |
240 | xy = (int) (m->xy * 100), | |
241 | yx = (int) (m->yx * 100), | |
242 | yy = (int) (m->yy * 100); | |
243 | ||
244 | return ((FcChar32) xx) ^ ((FcChar32) xy) ^ ((FcChar32) yx) ^ ((FcChar32) yy); | |
245 | } | |
246 | ||
247 | static FcChar32 | |
248 | FcListValueHash (FcValue v) | |
249 | { | |
250 | switch (v.type) { | |
251 | case FcTypeVoid: | |
252 | return 0; | |
253 | case FcTypeInteger: | |
254 | return (FcChar32) v.u.i; | |
255 | case FcTypeDouble: | |
256 | return (FcChar32) (int) v.u.d; | |
257 | case FcTypeString: | |
258 | return FcListStringHash (v.u.s); | |
259 | case FcTypeBool: | |
260 | return (FcChar32) v.u.b; | |
261 | case FcTypeMatrix: | |
262 | return FcListMatrixHash (v.u.m); | |
263 | case FcTypeCharSet: | |
264 | return FcCharSetCount (v.u.c); | |
88c747e2 | 265 | case FcTypeFTFace: |
d1bec8c6 | 266 | return (long) v.u.f; |
d8d73958 KP |
267 | case FcTypeLangSet: |
268 | return FcLangSetHash (v.u.l); | |
24330d27 KP |
269 | } |
270 | return 0; | |
271 | } | |
272 | ||
273 | static FcChar32 | |
274 | FcListValueListHash (FcValueList *list) | |
275 | { | |
276 | FcChar32 h = 0; | |
277 | ||
278 | while (list) | |
279 | { | |
280 | h = h ^ FcListValueHash (list->value); | |
281 | list = list->next; | |
282 | } | |
283 | return h; | |
284 | } | |
285 | ||
286 | static FcChar32 | |
287 | FcListPatternHash (FcPattern *font, | |
288 | FcObjectSet *os) | |
289 | { | |
290 | int n; | |
291 | FcPatternElt *e; | |
292 | FcChar32 h = 0; | |
293 | ||
294 | for (n = 0; n < os->nobject; n++) | |
295 | { | |
e9be9cd1 | 296 | e = FcPatternFindElt (font, os->objects[n]); |
24330d27 KP |
297 | if (e) |
298 | h = h ^ FcListValueListHash (e->values); | |
299 | } | |
300 | return h; | |
301 | } | |
302 | ||
303 | typedef struct _FcListBucket { | |
304 | struct _FcListBucket *next; | |
305 | FcChar32 hash; | |
306 | FcPattern *pattern; | |
307 | } FcListBucket; | |
308 | ||
309 | #define FC_LIST_HASH_SIZE 4099 | |
310 | ||
311 | typedef struct _FcListHashTable { | |
312 | int entries; | |
313 | FcListBucket *buckets[FC_LIST_HASH_SIZE]; | |
314 | } FcListHashTable; | |
315 | ||
316 | static void | |
317 | FcListHashTableInit (FcListHashTable *table) | |
318 | { | |
319 | table->entries = 0; | |
320 | memset (table->buckets, '\0', sizeof (table->buckets)); | |
321 | } | |
322 | ||
323 | static void | |
324 | FcListHashTableCleanup (FcListHashTable *table) | |
325 | { | |
326 | int i; | |
327 | FcListBucket *bucket, *next; | |
328 | ||
329 | for (i = 0; i < FC_LIST_HASH_SIZE; i++) | |
330 | { | |
331 | for (bucket = table->buckets[i]; bucket; bucket = next) | |
332 | { | |
333 | next = bucket->next; | |
334 | FcPatternDestroy (bucket->pattern); | |
335 | FcMemFree (FC_MEM_LISTBUCK, sizeof (FcListBucket)); | |
336 | free (bucket); | |
337 | } | |
338 | table->buckets[i] = 0; | |
339 | } | |
340 | table->entries = 0; | |
341 | } | |
342 | ||
343 | static FcBool | |
344 | FcListAppend (FcListHashTable *table, | |
345 | FcPattern *font, | |
346 | FcObjectSet *os) | |
347 | { | |
348 | int o; | |
349 | FcPatternElt *e; | |
350 | FcValueList *v; | |
351 | FcChar32 hash; | |
352 | FcListBucket **prev, *bucket; | |
353 | ||
354 | hash = FcListPatternHash (font, os); | |
355 | for (prev = &table->buckets[hash % FC_LIST_HASH_SIZE]; | |
356 | (bucket = *prev); prev = &(bucket->next)) | |
357 | { | |
358 | if (bucket->hash == hash && | |
359 | FcListPatternEqual (bucket->pattern, font, os)) | |
360 | return FcTrue; | |
361 | } | |
362 | bucket = (FcListBucket *) malloc (sizeof (FcListBucket)); | |
363 | if (!bucket) | |
364 | goto bail0; | |
365 | FcMemAlloc (FC_MEM_LISTBUCK, sizeof (FcListBucket)); | |
366 | bucket->next = 0; | |
367 | bucket->hash = hash; | |
368 | bucket->pattern = FcPatternCreate (); | |
369 | if (!bucket->pattern) | |
370 | goto bail1; | |
371 | ||
372 | for (o = 0; o < os->nobject; o++) | |
373 | { | |
e9be9cd1 | 374 | e = FcPatternFindElt (font, os->objects[o]); |
24330d27 KP |
375 | if (e) |
376 | { | |
377 | for (v = e->values; v; v = v->next) | |
378 | { | |
379 | if (!FcPatternAdd (bucket->pattern, | |
380 | os->objects[o], | |
381 | v->value, FcTrue)) | |
382 | goto bail2; | |
383 | } | |
384 | } | |
385 | } | |
386 | *prev = bucket; | |
387 | ++table->entries; | |
388 | ||
389 | return FcTrue; | |
390 | ||
391 | bail2: | |
392 | FcPatternDestroy (bucket->pattern); | |
393 | bail1: | |
394 | FcMemFree (FC_MEM_LISTBUCK, sizeof (FcListBucket)); | |
395 | free (bucket); | |
396 | bail0: | |
397 | return FcFalse; | |
398 | } | |
399 | ||
400 | FcFontSet * | |
80c053b7 KP |
401 | FcFontSetList (FcConfig *config, |
402 | FcFontSet **sets, | |
403 | int nsets, | |
404 | FcPattern *p, | |
405 | FcObjectSet *os) | |
24330d27 KP |
406 | { |
407 | FcFontSet *ret; | |
408 | FcFontSet *s; | |
409 | int f; | |
80c053b7 | 410 | int set; |
24330d27 KP |
411 | FcListHashTable table; |
412 | int i; | |
413 | FcListBucket *bucket; | |
414 | ||
415 | if (!config) | |
416 | { | |
179c3995 KP |
417 | if (!FcInitBringUptoDate ()) |
418 | goto bail0; | |
419 | ||
24330d27 KP |
420 | config = FcConfigGetCurrent (); |
421 | if (!config) | |
422 | goto bail0; | |
423 | } | |
424 | FcListHashTableInit (&table); | |
425 | /* | |
426 | * Walk all available fonts adding those that | |
427 | * match to the hash table | |
428 | */ | |
80c053b7 | 429 | for (set = 0; set < nsets; set++) |
24330d27 | 430 | { |
80c053b7 | 431 | s = sets[set]; |
24330d27 KP |
432 | if (!s) |
433 | continue; | |
434 | for (f = 0; f < s->nfont; f++) | |
74a623e0 KP |
435 | if (FcListPatternMatchAny (p, /* pattern */ |
436 | s->fonts[f])) /* font */ | |
24330d27 KP |
437 | if (!FcListAppend (&table, s->fonts[f], os)) |
438 | goto bail1; | |
439 | } | |
440 | #if 0 | |
441 | { | |
442 | int max = 0; | |
443 | int full = 0; | |
444 | int ents = 0; | |
445 | int len; | |
446 | for (i = 0; i < FC_LIST_HASH_SIZE; i++) | |
447 | { | |
448 | if ((bucket = table.buckets[i])) | |
449 | { | |
450 | len = 0; | |
451 | for (; bucket; bucket = bucket->next) | |
452 | { | |
453 | ents++; | |
454 | len++; | |
455 | } | |
456 | if (len > max) | |
457 | max = len; | |
458 | full++; | |
459 | } | |
460 | } | |
461 | printf ("used: %d max: %d avg: %g\n", full, max, | |
462 | (double) ents / FC_LIST_HASH_SIZE); | |
463 | } | |
464 | #endif | |
465 | /* | |
466 | * Walk the hash table and build | |
467 | * a font set | |
468 | */ | |
469 | ret = FcFontSetCreate (); | |
470 | if (!ret) | |
471 | goto bail0; | |
472 | for (i = 0; i < FC_LIST_HASH_SIZE; i++) | |
473 | while ((bucket = table.buckets[i])) | |
474 | { | |
475 | if (!FcFontSetAdd (ret, bucket->pattern)) | |
476 | goto bail2; | |
477 | table.buckets[i] = bucket->next; | |
478 | FcMemFree (FC_MEM_LISTBUCK, sizeof (FcListBucket)); | |
479 | free (bucket); | |
480 | } | |
481 | ||
482 | return ret; | |
483 | ||
484 | bail2: | |
485 | FcFontSetDestroy (ret); | |
486 | bail1: | |
487 | FcListHashTableCleanup (&table); | |
488 | bail0: | |
489 | return 0; | |
490 | } | |
80c053b7 KP |
491 | |
492 | FcFontSet * | |
493 | FcFontList (FcConfig *config, | |
494 | FcPattern *p, | |
495 | FcObjectSet *os) | |
496 | { | |
497 | FcFontSet *sets[2]; | |
498 | int nsets; | |
499 | ||
500 | if (!config) | |
501 | { | |
502 | config = FcConfigGetCurrent (); | |
503 | if (!config) | |
504 | return 0; | |
505 | } | |
506 | nsets = 0; | |
507 | if (config->fonts[FcSetSystem]) | |
508 | sets[nsets++] = config->fonts[FcSetSystem]; | |
509 | if (config->fonts[FcSetApplication]) | |
510 | sets[nsets++] = config->fonts[FcSetApplication]; | |
511 | return FcFontSetList (config, sets, nsets, p, os); | |
512 | } |