2 * fontconfig/src/fccharset.c
4 * Copyright © 2001 Keith Packard
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.
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.
31 FcCharSetCreate (void)
35 fcs = (FcCharSet *) malloc (sizeof (FcCharSet));
38 FcMemAlloc (FC_MEM_CHARSET, sizeof (FcCharSet));
41 fcs->leaves_offset = 0;
42 fcs->numbers_offset = 0;
49 return FcCharSetCreate ();
53 FcCharSetDestroy (FcCharSet *fcs)
57 if (fcs->ref == FC_REF_CONSTANT)
59 FcCacheObjectDereference (fcs);
64 for (i = 0; i < fcs->num; i++)
66 FcMemFree (FC_MEM_CHARLEAF, sizeof (FcCharLeaf));
67 free (FcCharSetLeaf (fcs, i));
71 FcMemFree (FC_MEM_CHARSET, fcs->num * sizeof (intptr_t));
72 free (FcCharSetLeaves (fcs));
76 FcMemFree (FC_MEM_CHARSET, fcs->num * sizeof (FcChar16));
77 free (FcCharSetNumbers (fcs));
79 FcMemFree (FC_MEM_CHARSET, sizeof (FcCharSet));
84 * Locate the leaf containing the specified char, return
85 * its index if it exists, otherwise return negative of
86 * the (position + 1) where it should be inserted
90 FcCharSetFindLeafPos (const FcCharSet *fcs, FcChar32 ucs4)
92 FcChar16 *numbers = FcCharSetNumbers(fcs);
95 int high = fcs->num - 1;
102 int mid = (low + high) >> 1;
111 if (high < 0 || (high < fcs->num && numbers[high] < ucs4))
117 FcCharSetFindLeaf (const FcCharSet *fcs, FcChar32 ucs4)
119 int pos = FcCharSetFindLeafPos (fcs, ucs4);
121 return FcCharSetLeaf(fcs, pos);
126 FcCharSetPutLeaf (FcCharSet *fcs,
131 intptr_t *leaves = FcCharSetLeaves (fcs);
132 FcChar16 *numbers = FcCharSetNumbers (fcs);
138 leaves = malloc (sizeof (*leaves));
141 intptr_t *new_leaves = realloc (leaves, (fcs->num + 1) *
143 intptr_t distance = (intptr_t) new_leaves - (intptr_t) leaves;
145 if (new_leaves && distance)
149 for (i = 0; i < fcs->num; i++)
150 new_leaves[i] -= distance;
158 FcMemFree (FC_MEM_CHARSET, fcs->num * sizeof (intptr_t));
159 FcMemAlloc (FC_MEM_CHARSET, (fcs->num + 1) * sizeof (intptr_t));
160 fcs->leaves_offset = FcPtrToOffset (fcs, leaves);
163 numbers = malloc (sizeof (FcChar16));
165 numbers = realloc (numbers, (fcs->num + 1) * sizeof (FcChar16));
170 FcMemFree (FC_MEM_CHARSET, fcs->num * sizeof (FcChar16));
171 FcMemAlloc (FC_MEM_CHARSET, (fcs->num + 1) * sizeof (FcChar16));
172 fcs->numbers_offset = FcPtrToOffset (fcs, numbers);
174 memmove (leaves + pos + 1, leaves + pos,
175 (fcs->num - pos) * sizeof (*leaves));
176 memmove (numbers + pos + 1, numbers + pos,
177 (fcs->num - pos) * sizeof (*numbers));
178 numbers[pos] = (FcChar16) ucs4;
179 leaves[pos] = FcPtrToOffset (leaves, leaf);
185 * Locate the leaf containing the specified char, creating it
190 FcCharSetFindLeafCreate (FcCharSet *fcs, FcChar32 ucs4)
195 pos = FcCharSetFindLeafPos (fcs, ucs4);
197 return FcCharSetLeaf(fcs, pos);
199 leaf = calloc (1, sizeof (FcCharLeaf));
204 if (!FcCharSetPutLeaf (fcs, ucs4, leaf, pos))
209 FcMemAlloc (FC_MEM_CHARLEAF, sizeof (FcCharLeaf));
214 FcCharSetInsertLeaf (FcCharSet *fcs, FcChar32 ucs4, FcCharLeaf *leaf)
218 pos = FcCharSetFindLeafPos (fcs, ucs4);
221 FcMemFree (FC_MEM_CHARLEAF, sizeof (FcCharLeaf));
222 free (FcCharSetLeaf (fcs, pos));
223 FcCharSetLeaves(fcs)[pos] = FcPtrToOffset (FcCharSetLeaves(fcs),
228 return FcCharSetPutLeaf (fcs, ucs4, leaf, pos);
232 FcCharSetAddChar (FcCharSet *fcs, FcChar32 ucs4)
237 if (fcs->ref == FC_REF_CONSTANT)
239 leaf = FcCharSetFindLeafCreate (fcs, ucs4);
242 b = &leaf->map[(ucs4 & 0xff) >> 5];
243 *b |= (1 << (ucs4 & 0x1f));
248 * An iterator for the leaves of a charset
251 typedef struct _fcCharSetIter {
258 * Set iter->leaf to the leaf containing iter->ucs4 or higher
262 FcCharSetIterSet (const FcCharSet *fcs, FcCharSetIter *iter)
264 int pos = FcCharSetFindLeafPos (fcs, iter->ucs4);
275 iter->ucs4 = (FcChar32) FcCharSetNumbers(fcs)[pos] << 8;
277 iter->leaf = FcCharSetLeaf(fcs, pos);
282 FcCharSetIterNext (const FcCharSet *fcs, FcCharSetIter *iter)
284 int pos = iter->pos + 1;
292 iter->ucs4 = (FcChar32) FcCharSetNumbers(fcs)[pos] << 8;
293 iter->leaf = FcCharSetLeaf(fcs, pos);
300 FcCharSetIterStart (const FcCharSet *fcs, FcCharSetIter *iter)
304 FcCharSetIterSet (fcs, iter);
308 FcCharSetCopy (FcCharSet *src)
310 if (src->ref != FC_REF_CONSTANT)
313 FcCacheObjectReference (src);
318 FcCharSetEqual (const FcCharSet *a, const FcCharSet *b)
320 FcCharSetIter ai, bi;
325 for (FcCharSetIterStart (a, &ai), FcCharSetIterStart (b, &bi);
327 FcCharSetIterNext (a, &ai), FcCharSetIterNext (b, &bi))
329 if (ai.ucs4 != bi.ucs4)
331 for (i = 0; i < 256/32; i++)
332 if (ai.leaf->map[i] != bi.leaf->map[i])
335 return ai.leaf == bi.leaf;
339 FcCharSetAddLeaf (FcCharSet *fcs,
343 FcCharLeaf *new = FcCharSetFindLeafCreate (fcs, ucs4);
351 FcCharSetOperate (const FcCharSet *a,
353 FcBool (*overlap) (FcCharLeaf *result,
354 const FcCharLeaf *al,
355 const FcCharLeaf *bl),
360 FcCharSetIter ai, bi;
362 fcs = FcCharSetCreate ();
365 FcCharSetIterStart (a, &ai);
366 FcCharSetIterStart (b, &bi);
367 while ((ai.leaf || (bonly && bi.leaf)) && (bi.leaf || (aonly && ai.leaf)))
369 if (ai.ucs4 < bi.ucs4)
373 if (!FcCharSetAddLeaf (fcs, ai.ucs4, ai.leaf))
375 FcCharSetIterNext (a, &ai);
380 FcCharSetIterSet (a, &ai);
383 else if (bi.ucs4 < ai.ucs4 )
387 if (!FcCharSetAddLeaf (fcs, bi.ucs4, bi.leaf))
389 FcCharSetIterNext (b, &bi);
394 FcCharSetIterSet (b, &bi);
401 if ((*overlap) (&leaf, ai.leaf, bi.leaf))
403 if (!FcCharSetAddLeaf (fcs, ai.ucs4, &leaf))
406 FcCharSetIterNext (a, &ai);
407 FcCharSetIterNext (b, &bi);
412 FcCharSetDestroy (fcs);
418 FcCharSetIntersectLeaf (FcCharLeaf *result,
419 const FcCharLeaf *al,
420 const FcCharLeaf *bl)
423 FcBool nonempty = FcFalse;
425 for (i = 0; i < 256/32; i++)
426 if ((result->map[i] = al->map[i] & bl->map[i]))
432 FcCharSetIntersect (const FcCharSet *a, const FcCharSet *b)
434 return FcCharSetOperate (a, b, FcCharSetIntersectLeaf, FcFalse, FcFalse);
438 FcCharSetUnionLeaf (FcCharLeaf *result,
439 const FcCharLeaf *al,
440 const FcCharLeaf *bl)
444 for (i = 0; i < 256/32; i++)
445 result->map[i] = al->map[i] | bl->map[i];
450 FcCharSetUnion (const FcCharSet *a, const FcCharSet *b)
452 return FcCharSetOperate (a, b, FcCharSetUnionLeaf, FcTrue, FcTrue);
456 FcCharSetMerge (FcCharSet *a, const FcCharSet *b)
459 FcCharSetIter ai, bi;
462 return FcCharSetCopy ((FcCharSet *) b);
463 } else if (a->ref == FC_REF_CONSTANT) {
464 fcs = FcCharSetCreate ();
470 FcCharSetIterStart (a, &ai);
471 FcCharSetIterStart (b, &bi);
472 while (ai.leaf || bi.leaf)
474 if (ai.ucs4 < bi.ucs4)
476 if (!FcCharSetAddLeaf (fcs, ai.ucs4, ai.leaf))
479 FcCharSetIterNext (a, &ai);
481 else if (bi.ucs4 < ai.ucs4)
483 if (!FcCharSetAddLeaf (fcs, bi.ucs4, bi.leaf))
486 FcCharSetIterNext (b, &bi);
492 if (FcCharSetUnionLeaf (&leaf, ai.leaf, bi.leaf))
494 if (!FcCharSetAddLeaf (fcs, ai.ucs4, &leaf))
498 FcCharSetIterNext (a, &ai);
499 FcCharSetIterNext (b, &bi);
504 FcCharSetDestroy (a);
509 FcCharSetDestroy (fcs);
512 FcCharSetDestroy (a);
518 FcCharSetSubtractLeaf (FcCharLeaf *result,
519 const FcCharLeaf *al,
520 const FcCharLeaf *bl)
523 FcBool nonempty = FcFalse;
525 for (i = 0; i < 256/32; i++)
526 if ((result->map[i] = al->map[i] & ~bl->map[i]))
532 FcCharSetSubtract (const FcCharSet *a, const FcCharSet *b)
534 return FcCharSetOperate (a, b, FcCharSetSubtractLeaf, FcTrue, FcFalse);
538 FcCharSetHasChar (const FcCharSet *fcs, FcChar32 ucs4)
540 FcCharLeaf *leaf = FcCharSetFindLeaf (fcs, ucs4);
543 return (leaf->map[(ucs4 & 0xff) >> 5] & (1 << (ucs4 & 0x1f))) != 0;
547 FcCharSetPopCount (FcChar32 c1)
550 FcChar32 c2 = (c1 >> 1) & 033333333333;
551 c2 = c1 - c2 - ((c2 >> 1) & 033333333333);
552 return (((c2 + (c2 >> 3)) & 030707070707) % 077);
556 FcCharSetIntersectCount (const FcCharSet *a, const FcCharSet *b)
558 FcCharSetIter ai, bi;
561 FcCharSetIterStart (a, &ai);
562 FcCharSetIterStart (b, &bi);
563 while (ai.leaf && bi.leaf)
565 if (ai.ucs4 == bi.ucs4)
567 FcChar32 *am = ai.leaf->map;
568 FcChar32 *bm = bi.leaf->map;
571 count += FcCharSetPopCount (*am++ & *bm++);
572 FcCharSetIterNext (a, &ai);
574 else if (ai.ucs4 < bi.ucs4)
577 FcCharSetIterSet (a, &ai);
579 if (bi.ucs4 < ai.ucs4)
582 FcCharSetIterSet (b, &bi);
589 FcCharSetCount (const FcCharSet *a)
594 for (FcCharSetIterStart (a, &ai); ai.leaf; FcCharSetIterNext (a, &ai))
597 FcChar32 *am = ai.leaf->map;
600 count += FcCharSetPopCount (*am++);
606 FcCharSetSubtractCount (const FcCharSet *a, const FcCharSet *b)
608 FcCharSetIter ai, bi;
611 FcCharSetIterStart (a, &ai);
612 FcCharSetIterStart (b, &bi);
615 if (ai.ucs4 <= bi.ucs4)
617 FcChar32 *am = ai.leaf->map;
619 if (ai.ucs4 == bi.ucs4)
621 FcChar32 *bm = bi.leaf->map;
623 count += FcCharSetPopCount (*am++ & ~*bm++);
628 count += FcCharSetPopCount (*am++);
630 FcCharSetIterNext (a, &ai);
635 FcCharSetIterSet (b, &bi);
642 * return FcTrue iff a is a subset of b
645 FcCharSetIsSubset (const FcCharSet *a, const FcCharSet *b)
650 if (a == b) return FcTrue;
653 while (ai < a->num && bi < b->num)
655 an = FcCharSetNumbers(a)[ai];
656 bn = FcCharSetNumbers(b)[bi];
658 * Check matching pages
662 FcChar32 *am = FcCharSetLeaf(a, ai)->map;
663 FcChar32 *bm = FcCharSetLeaf(b, bi)->map;
669 * Does am have any bits not in bm?
679 * Does a have any pages not in b?
686 int high = b->num - 1;
689 * Search for page 'an' in 'b'
693 int mid = (low + high) >> 1;
694 bn = FcCharSetNumbers(b)[mid];
706 while (bi < b->num && FcCharSetNumbers(b)[bi] < an)
711 * did we look at every page?
717 * These two functions efficiently walk the entire charmap for
718 * other software (like pango) that want their own copy
722 FcCharSetNextPage (const FcCharSet *a,
723 FcChar32 map[FC_CHARSET_MAP_SIZE],
730 FcCharSetIterSet (a, &ai);
732 return FC_CHARSET_DONE;
735 * Save current information
738 memcpy (map, ai.leaf->map, sizeof (ai.leaf->map));
742 FcCharSetIterNext (a, &ai);
749 FcCharSetFirstPage (const FcCharSet *a,
750 FcChar32 map[FC_CHARSET_MAP_SIZE],
754 return FcCharSetNextPage (a, map, next);
758 * old coverage API, rather hard to use correctly
762 FcCharSetCoverage (const FcCharSet *a, FcChar32 page, FcChar32 *result)
767 FcCharSetIterSet (a, &ai);
770 memset (result, '\0', 256 / 8);
775 memcpy (result, ai.leaf->map, sizeof (ai.leaf->map));
776 FcCharSetIterNext (a, &ai);
783 * ASCII representation of charsets.
785 * Each leaf is represented as 9 32-bit values, the code of the first character followed
786 * by 8 32 bit values for the leaf itself. Each value is encoded as 5 ASCII characters,
787 * only 85 different values are used to avoid control characters as well as the other
788 * characters used to encode font names. 85**5 > 2^32 so things work out, but
789 * it's not exactly human readable output. As a special case, 0 is encoded as a space
792 static const unsigned char charToValue[256] = {
793 /* "" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
794 /* "\b" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
795 /* "\020" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
796 /* "\030" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
797 /* " " */ 0xff, 0x00, 0xff, 0x01, 0x02, 0x03, 0x04, 0xff,
798 /* "(" */ 0x05, 0x06, 0x07, 0x08, 0xff, 0xff, 0x09, 0x0a,
799 /* "0" */ 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12,
800 /* "8" */ 0x13, 0x14, 0xff, 0x15, 0x16, 0xff, 0x17, 0x18,
801 /* "@" */ 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20,
802 /* "H" */ 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,
803 /* "P" */ 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30,
804 /* "X" */ 0x31, 0x32, 0x33, 0x34, 0xff, 0x35, 0x36, 0xff,
805 /* "`" */ 0xff, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d,
806 /* "h" */ 0x3e, 0x3f, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45,
807 /* "p" */ 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d,
808 /* "x" */ 0x4e, 0x4f, 0x50, 0x51, 0x52, 0x53, 0x54, 0xff,
809 /* "\200" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
810 /* "\210" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
811 /* "\220" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
812 /* "\230" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
813 /* "\240" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
814 /* "\250" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
815 /* "\260" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
816 /* "\270" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
817 /* "\300" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
818 /* "\310" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
819 /* "\320" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
820 /* "\330" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
821 /* "\340" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
822 /* "\350" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
823 /* "\360" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
824 /* "\370" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
827 static const FcChar8 valueToChar[0x55] = {
828 /* 0x00 */ '!', '#', '$', '%', '&', '(', ')', '*',
829 /* 0x08 */ '+', '.', '/', '0', '1', '2', '3', '4',
830 /* 0x10 */ '5', '6', '7', '8', '9', ';', '<', '>',
831 /* 0x18 */ '?', '@', 'A', 'B', 'C', 'D', 'E', 'F',
832 /* 0x20 */ 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N',
833 /* 0x28 */ 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V',
834 /* 0x30 */ 'W', 'X', 'Y', 'Z', '[', ']', '^', 'a',
835 /* 0x38 */ 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i',
836 /* 0x40 */ 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
837 /* 0x48 */ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y',
838 /* 0x50 */ 'z', '{', '|', '}', '~',
842 FcCharSetParseValue (FcChar8 *string, FcChar32 *value)
856 for (i = 0; i < 5; i++)
858 if (!(c = (FcChar32) (unsigned char) *string++))
871 FcCharSetUnparseValue (FcStrBuf *buf, FcChar32 value)
876 return FcStrBufChar (buf, ' ');
881 FcChar8 *s = string + 5;
883 for (i = 0; i < 5; i++)
885 *--s = valueToChar[value % 85];
888 for (i = 0; i < 5; i++)
889 if (!FcStrBufChar (buf, *s++))
896 FcNameParseCharSet (FcChar8 *string)
905 c = FcCharSetCreate ();
910 string = FcCharSetParseValue (string, &ucs4);
914 for (i = 0; i < 256/32; i++)
916 string = FcCharSetParseValue (string, &temp.map[i]);
923 leaf = malloc (sizeof (FcCharLeaf));
927 if (!FcCharSetInsertLeaf (c, ucs4, leaf))
935 FcMemFree (FC_MEM_CHARSET, c->num * sizeof (FcCharLeaf *));
936 free (FcCharSetLeaves (c));
940 FcMemFree (FC_MEM_CHARSET, c->num * sizeof (FcChar16));
941 free (FcCharSetNumbers (c));
943 FcMemFree (FC_MEM_CHARSET, sizeof (FcCharSet));
950 FcNameUnparseCharSet (FcStrBuf *buf, const FcCharSet *c)
958 for (FcCharSetIterStart (c, &ci);
960 FcCharSetIterNext (c, &ci))
962 if (!FcCharSetUnparseValue (buf, ci.ucs4))
964 for (i = 0; i < 256/32; i++)
965 if (!FcCharSetUnparseValue (buf, ci.leaf->map[i]))
972 FcCharSetIter ci, checki;
974 /* null terminate for parser */
975 FcStrBufChar (buf, '\0');
976 /* step back over null for life after test */
978 check = FcNameParseCharSet (buf->buf + len);
979 FcCharSetIterStart (c, &ci);
980 FcCharSetIterStart (check, &checki);
981 while (ci.leaf || checki.leaf)
983 if (ci.ucs4 < checki.ucs4)
985 printf ("Missing leaf node at 0x%x\n", ci.ucs4);
986 FcCharSetIterNext (c, &ci);
988 else if (checki.ucs4 < ci.ucs4)
990 printf ("Extra leaf node at 0x%x\n", checki.ucs4);
991 FcCharSetIterNext (check, &checki);
996 FcChar32 *cm = ci.leaf->map;
997 FcChar32 *checkm = checki.leaf->map;
999 for (i = 0; i < 256; i += 32)
1002 printf ("Mismatching sets at 0x%08x: 0x%08x != 0x%08x\n",
1003 ci.ucs4 + i, *cm, *checkm);
1007 FcCharSetIterNext (c, &ci);
1008 FcCharSetIterNext (check, &checki);
1011 if ((missing = FcCharSetSubtractCount (c, check)))
1012 printf ("%d missing in reparsed result\n", missing);
1013 if ((missing = FcCharSetSubtractCount (check, c)))
1014 printf ("%d extra in reparsed result\n", missing);
1015 FcCharSetDestroy (check);
1022 typedef struct _FcCharLeafEnt FcCharLeafEnt;
1024 struct _FcCharLeafEnt {
1025 FcCharLeafEnt *next;
1030 #define FC_CHAR_LEAF_BLOCK (4096 / sizeof (FcCharLeafEnt))
1031 #define FC_CHAR_LEAF_HASH_SIZE 257
1033 typedef struct _FcCharSetEnt FcCharSetEnt;
1035 struct _FcCharSetEnt {
1041 typedef struct _FcCharSetOrigEnt FcCharSetOrigEnt;
1043 struct _FcCharSetOrigEnt {
1044 FcCharSetOrigEnt *next;
1045 const FcCharSet *orig;
1046 const FcCharSet *frozen;
1049 #define FC_CHAR_SET_HASH_SIZE 67
1051 struct _FcCharSetFreezer {
1052 FcCharLeafEnt *leaf_hash_table[FC_CHAR_LEAF_HASH_SIZE];
1053 FcCharLeafEnt **leaf_blocks;
1054 int leaf_block_count;
1055 FcCharSetEnt *set_hash_table[FC_CHAR_SET_HASH_SIZE];
1056 FcCharSetOrigEnt *orig_hash_table[FC_CHAR_SET_HASH_SIZE];
1057 FcCharLeafEnt *current_block;
1061 int leaves_allocated;
1062 int charsets_allocated;
1065 static FcCharLeafEnt *
1066 FcCharLeafEntCreate (FcCharSetFreezer *freezer)
1068 if (!freezer->leaf_remain)
1070 FcCharLeafEnt **newBlocks;
1072 freezer->leaf_block_count++;
1073 newBlocks = realloc (freezer->leaf_blocks, freezer->leaf_block_count * sizeof (FcCharLeafEnt *));
1076 freezer->leaf_blocks = newBlocks;
1077 freezer->current_block = freezer->leaf_blocks[freezer->leaf_block_count-1] = malloc (FC_CHAR_LEAF_BLOCK * sizeof (FcCharLeafEnt));
1078 if (!freezer->current_block)
1080 FcMemAlloc (FC_MEM_CHARLEAF, FC_CHAR_LEAF_BLOCK * sizeof (FcCharLeafEnt));
1081 freezer->leaf_remain = FC_CHAR_LEAF_BLOCK;
1083 freezer->leaf_remain--;
1084 freezer->leaves_allocated++;
1085 return freezer->current_block++;
1089 FcCharLeafHash (FcCharLeaf *leaf)
1094 for (i = 0; i < 256/32; i++)
1095 hash = ((hash << 1) | (hash >> 31)) ^ leaf->map[i];
1100 FcCharSetFreezeLeaf (FcCharSetFreezer *freezer, FcCharLeaf *leaf)
1102 FcChar32 hash = FcCharLeafHash (leaf);
1103 FcCharLeafEnt **bucket = &freezer->leaf_hash_table[hash % FC_CHAR_LEAF_HASH_SIZE];
1106 for (ent = *bucket; ent; ent = ent->next)
1108 if (ent->hash == hash && !memcmp (&ent->leaf, leaf, sizeof (FcCharLeaf)))
1112 ent = FcCharLeafEntCreate(freezer);
1117 ent->next = *bucket;
1123 FcCharSetHash (FcCharSet *fcs)
1128 /* hash in leaves */
1129 for (i = 0; i < fcs->num; i++)
1130 hash = ((hash << 1) | (hash >> 31)) ^ FcCharLeafHash (FcCharSetLeaf(fcs,i));
1131 /* hash in numbers */
1132 for (i = 0; i < fcs->num; i++)
1133 hash = ((hash << 1) | (hash >> 31)) ^ *FcCharSetNumbers(fcs);
1138 FcCharSetFreezeOrig (FcCharSetFreezer *freezer, const FcCharSet *orig, const FcCharSet *frozen)
1140 FcCharSetOrigEnt **bucket = &freezer->orig_hash_table[((uintptr_t) orig) & FC_CHAR_SET_HASH_SIZE];
1141 FcCharSetOrigEnt *ent;
1143 ent = malloc (sizeof (FcCharSetOrigEnt));
1147 ent->frozen = frozen;
1148 ent->next = *bucket;
1154 FcCharSetFreezeBase (FcCharSetFreezer *freezer, FcCharSet *fcs, const FcCharSet *orig)
1156 FcChar32 hash = FcCharSetHash (fcs);
1157 FcCharSetEnt **bucket = &freezer->set_hash_table[hash % FC_CHAR_SET_HASH_SIZE];
1162 for (ent = *bucket; ent; ent = ent->next)
1164 if (ent->hash == hash &&
1165 ent->set.num == fcs->num &&
1166 !memcmp (FcCharSetNumbers(&ent->set),
1167 FcCharSetNumbers(fcs),
1168 fcs->num * sizeof (FcChar16)))
1173 for (i = 0; i < fcs->num; i++)
1174 if (FcCharSetLeaf(&ent->set, i) != FcCharSetLeaf(fcs, i))
1181 size = (sizeof (FcCharSetEnt) +
1182 fcs->num * sizeof (FcCharLeaf *) +
1183 fcs->num * sizeof (FcChar16));
1184 ent = malloc (size);
1187 FcMemAlloc (FC_MEM_CHARSET, size);
1189 freezer->charsets_allocated++;
1191 ent->set.ref = FC_REF_CONSTANT;
1192 ent->set.num = fcs->num;
1195 intptr_t *ent_leaves;
1197 ent->set.leaves_offset = sizeof (ent->set);
1198 ent->set.numbers_offset = (ent->set.leaves_offset +
1199 fcs->num * sizeof (intptr_t));
1201 ent_leaves = FcCharSetLeaves (&ent->set);
1202 for (i = 0; i < fcs->num; i++)
1203 ent_leaves[i] = FcPtrToOffset (ent_leaves,
1204 FcCharSetLeaf (fcs, i));
1205 memcpy (FcCharSetNumbers (&ent->set),
1206 FcCharSetNumbers (fcs),
1207 fcs->num * sizeof (FcChar16));
1211 ent->set.leaves_offset = 0;
1212 ent->set.numbers_offset = 0;
1216 ent->next = *bucket;
1222 static const FcCharSet *
1223 FcCharSetFindFrozen (FcCharSetFreezer *freezer, const FcCharSet *orig)
1225 FcCharSetOrigEnt **bucket = &freezer->orig_hash_table[((uintptr_t) orig) & FC_CHAR_SET_HASH_SIZE];
1226 FcCharSetOrigEnt *ent;
1228 for (ent = *bucket; ent; ent = ent->next)
1229 if (ent->orig == orig)
1235 FcCharSetFreeze (FcCharSetFreezer *freezer, const FcCharSet *fcs)
1238 const FcCharSet *n = 0;
1242 b = FcCharSetCreate ();
1245 for (i = 0; i < fcs->num; i++)
1247 l = FcCharSetFreezeLeaf (freezer, FcCharSetLeaf(fcs, i));
1250 if (!FcCharSetInsertLeaf (b, FcCharSetNumbers(fcs)[i] << 8, l))
1253 n = FcCharSetFreezeBase (freezer, b, fcs);
1254 if (!FcCharSetFreezeOrig (freezer, fcs, n))
1259 freezer->charsets_seen++;
1260 freezer->leaves_seen += fcs->num;
1264 FcMemFree (FC_MEM_CHARSET, b->num * sizeof (FcCharLeaf *));
1265 free (FcCharSetLeaves (b));
1269 FcMemFree (FC_MEM_CHARSET, b->num * sizeof (FcChar16));
1270 free (FcCharSetNumbers (b));
1272 FcMemFree (FC_MEM_CHARSET, sizeof (FcCharSet));
1279 FcCharSetFreezerCreate (void)
1281 FcCharSetFreezer *freezer;
1283 freezer = calloc (1, sizeof (FcCharSetFreezer));
1288 FcCharSetFreezerDestroy (FcCharSetFreezer *freezer)
1292 if (FcDebug() & FC_DBG_CACHE)
1294 printf ("\ncharsets %d -> %d leaves %d -> %d\n",
1295 freezer->charsets_seen, freezer->charsets_allocated,
1296 freezer->leaves_seen, freezer->leaves_allocated);
1298 for (i = 0; i < FC_CHAR_SET_HASH_SIZE; i++)
1300 FcCharSetEnt *ent, *next;
1301 for (ent = freezer->set_hash_table[i]; ent; ent = next)
1304 FcMemFree (FC_MEM_CHARSET, (sizeof (FcCharSetEnt) +
1305 ent->set.num * sizeof (FcCharLeaf *) +
1306 ent->set.num * sizeof (FcChar16)));
1311 for (i = 0; i < FC_CHAR_SET_HASH_SIZE; i++)
1313 FcCharSetOrigEnt *ent, *next;
1314 for (ent = freezer->orig_hash_table[i]; ent; ent = next)
1321 for (i = 0; i < freezer->leaf_block_count; i++)
1323 free (freezer->leaf_blocks[i]);
1324 FcMemFree (FC_MEM_CHARLEAF, FC_CHAR_LEAF_BLOCK * sizeof (FcCharLeafEnt));
1327 free (freezer->leaf_blocks);
1332 FcCharSetSerializeAlloc (FcSerialize *serialize, const FcCharSet *cs)
1338 if (cs->ref != FC_REF_CONSTANT)
1340 if (!serialize->cs_freezer)
1342 serialize->cs_freezer = FcCharSetFreezerCreate ();
1343 if (!serialize->cs_freezer)
1346 if (FcCharSetFindFrozen (serialize->cs_freezer, cs))
1349 cs = FcCharSetFreeze (serialize->cs_freezer, cs);
1352 leaves = FcCharSetLeaves (cs);
1353 numbers = FcCharSetNumbers (cs);
1355 if (!FcSerializeAlloc (serialize, cs, sizeof (FcCharSet)))
1357 if (!FcSerializeAlloc (serialize, leaves, cs->num * sizeof (intptr_t)))
1359 if (!FcSerializeAlloc (serialize, numbers, cs->num * sizeof (FcChar16)))
1361 for (i = 0; i < cs->num; i++)
1362 if (!FcSerializeAlloc (serialize, FcCharSetLeaf(cs, i),
1363 sizeof (FcCharLeaf)))
1369 FcCharSetSerialize(FcSerialize *serialize, const FcCharSet *cs)
1371 FcCharSet *cs_serialized;
1372 intptr_t *leaves, *leaves_serialized;
1373 FcChar16 *numbers, *numbers_serialized;
1374 FcCharLeaf *leaf, *leaf_serialized;
1377 if (cs->ref != FC_REF_CONSTANT && serialize->cs_freezer)
1379 cs = FcCharSetFindFrozen (serialize->cs_freezer, cs);
1384 cs_serialized = FcSerializePtr (serialize, cs);
1388 cs_serialized->ref = FC_REF_CONSTANT;
1389 cs_serialized->num = cs->num;
1393 leaves = FcCharSetLeaves (cs);
1394 leaves_serialized = FcSerializePtr (serialize, leaves);
1395 if (!leaves_serialized)
1398 cs_serialized->leaves_offset = FcPtrToOffset (cs_serialized,
1401 numbers = FcCharSetNumbers (cs);
1402 numbers_serialized = FcSerializePtr (serialize, numbers);
1406 cs_serialized->numbers_offset = FcPtrToOffset (cs_serialized,
1407 numbers_serialized);
1409 for (i = 0; i < cs->num; i++)
1411 leaf = FcCharSetLeaf (cs, i);
1412 leaf_serialized = FcSerializePtr (serialize, leaf);
1413 if (!leaf_serialized)
1415 *leaf_serialized = *leaf;
1416 leaves_serialized[i] = FcPtrToOffset (leaves_serialized,
1418 numbers_serialized[i] = numbers[i];
1423 cs_serialized->leaves_offset = 0;
1424 cs_serialized->numbers_offset = 0;
1427 return cs_serialized;
1429 #define __fccharset__
1430 #include "fcaliastail.h"
1431 #undef __fccharset__