2 * $RCSId: xc/lib/fontconfig/src/fccharset.c,v 1.18 2002/08/22 07:36:44 keithp Exp $
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)
61 for (i = 0; i < fcs->num; i++)
63 FcMemFree (FC_MEM_CHARLEAF, sizeof (FcCharLeaf));
64 free (FcCharSetLeaf (fcs, i));
68 FcMemFree (FC_MEM_CHARSET, fcs->num * sizeof (intptr_t));
69 free (FcCharSetLeaves (fcs));
73 FcMemFree (FC_MEM_CHARSET, fcs->num * sizeof (FcChar16));
74 free (FcCharSetNumbers (fcs));
76 FcMemFree (FC_MEM_CHARSET, sizeof (FcCharSet));
81 * Locate the leaf containing the specified char, return
82 * its index if it exists, otherwise return negative of
83 * the (position + 1) where it should be inserted
87 FcCharSetFindLeafPos (const FcCharSet *fcs, FcChar32 ucs4)
89 FcChar16 *numbers = FcCharSetNumbers(fcs);
92 int high = fcs->num - 1;
99 int mid = (low + high) >> 1;
108 if (high < 0 || (high < fcs->num && numbers[high] < ucs4))
114 FcCharSetFindLeaf (const FcCharSet *fcs, FcChar32 ucs4)
116 int pos = FcCharSetFindLeafPos (fcs, ucs4);
118 return FcCharSetLeaf(fcs, pos);
123 FcCharSetPutLeaf (FcCharSet *fcs,
128 intptr_t *leaves = FcCharSetLeaves (fcs);
129 FcChar16 *numbers = FcCharSetNumbers (fcs);
135 leaves = malloc (sizeof (*leaves));
138 intptr_t *new_leaves = realloc (leaves, (fcs->num + 1) *
140 intptr_t distance = (intptr_t) new_leaves - (intptr_t) leaves;
142 if (new_leaves && distance)
146 for (i = 0; i < fcs->num; i++)
147 new_leaves[i] -= distance;
155 FcMemFree (FC_MEM_CHARSET, fcs->num * sizeof (intptr_t));
156 FcMemAlloc (FC_MEM_CHARSET, (fcs->num + 1) * sizeof (intptr_t));
157 fcs->leaves_offset = FcPtrToOffset (fcs, leaves);
160 numbers = malloc (sizeof (FcChar16));
162 numbers = realloc (numbers, (fcs->num + 1) * sizeof (FcChar16));
167 FcMemFree (FC_MEM_CHARSET, fcs->num * sizeof (FcChar16));
168 FcMemAlloc (FC_MEM_CHARSET, (fcs->num + 1) * sizeof (FcChar16));
169 fcs->numbers_offset = FcPtrToOffset (fcs, numbers);
171 memmove (leaves + pos + 1, leaves + pos,
172 (fcs->num - pos) * sizeof (*leaves));
173 memmove (numbers + pos + 1, numbers + pos,
174 (fcs->num - pos) * sizeof (*numbers));
175 numbers[pos] = (FcChar16) ucs4;
176 leaves[pos] = FcPtrToOffset (leaves, leaf);
182 * Locate the leaf containing the specified char, creating it
187 FcCharSetFindLeafCreate (FcCharSet *fcs, FcChar32 ucs4)
192 pos = FcCharSetFindLeafPos (fcs, ucs4);
194 return FcCharSetLeaf(fcs, pos);
196 leaf = calloc (1, sizeof (FcCharLeaf));
201 if (!FcCharSetPutLeaf (fcs, ucs4, leaf, pos))
206 FcMemAlloc (FC_MEM_CHARLEAF, sizeof (FcCharLeaf));
211 FcCharSetInsertLeaf (FcCharSet *fcs, FcChar32 ucs4, FcCharLeaf *leaf)
215 pos = FcCharSetFindLeafPos (fcs, ucs4);
218 FcMemFree (FC_MEM_CHARLEAF, sizeof (FcCharLeaf));
219 free (FcCharSetLeaf (fcs, pos));
220 FcCharSetLeaves(fcs)[pos] = FcPtrToOffset (FcCharSetLeaves(fcs),
225 return FcCharSetPutLeaf (fcs, ucs4, leaf, pos);
229 FcCharSetAddChar (FcCharSet *fcs, FcChar32 ucs4)
234 if (fcs->ref == FC_REF_CONSTANT)
236 leaf = FcCharSetFindLeafCreate (fcs, ucs4);
239 b = &leaf->map[(ucs4 & 0xff) >> 5];
240 *b |= (1 << (ucs4 & 0x1f));
245 * An iterator for the leaves of a charset
248 typedef struct _fcCharSetIter {
255 * Set iter->leaf to the leaf containing iter->ucs4 or higher
259 FcCharSetIterSet (const FcCharSet *fcs, FcCharSetIter *iter)
261 int pos = FcCharSetFindLeafPos (fcs, iter->ucs4);
272 iter->ucs4 = (FcChar32) FcCharSetNumbers(fcs)[pos] << 8;
274 iter->leaf = FcCharSetLeaf(fcs, pos);
279 FcCharSetIterNext (const FcCharSet *fcs, FcCharSetIter *iter)
281 int pos = iter->pos + 1;
289 iter->ucs4 = (FcChar32) FcCharSetNumbers(fcs)[pos] << 8;
290 iter->leaf = FcCharSetLeaf(fcs, pos);
297 FcCharSetIterStart (const FcCharSet *fcs, FcCharSetIter *iter)
301 FcCharSetIterSet (fcs, iter);
305 FcCharSetCopy (FcCharSet *src)
307 if (src->ref != FC_REF_CONSTANT)
313 FcCharSetEqual (const FcCharSet *a, const FcCharSet *b)
315 FcCharSetIter ai, bi;
320 for (FcCharSetIterStart (a, &ai), FcCharSetIterStart (b, &bi);
322 FcCharSetIterNext (a, &ai), FcCharSetIterNext (b, &bi))
324 if (ai.ucs4 != bi.ucs4)
326 for (i = 0; i < 256/32; i++)
327 if (ai.leaf->map[i] != bi.leaf->map[i])
330 return ai.leaf == bi.leaf;
334 FcCharSetAddLeaf (FcCharSet *fcs,
338 FcCharLeaf *new = FcCharSetFindLeafCreate (fcs, ucs4);
346 FcCharSetOperate (const FcCharSet *a,
348 FcBool (*overlap) (FcCharLeaf *result,
349 const FcCharLeaf *al,
350 const FcCharLeaf *bl),
355 FcCharSetIter ai, bi;
357 fcs = FcCharSetCreate ();
360 FcCharSetIterStart (a, &ai);
361 FcCharSetIterStart (b, &bi);
362 while ((ai.leaf || (bonly && bi.leaf)) && (bi.leaf || (aonly && ai.leaf)))
364 if (ai.ucs4 < bi.ucs4)
368 if (!FcCharSetAddLeaf (fcs, ai.ucs4, ai.leaf))
370 FcCharSetIterNext (a, &ai);
375 FcCharSetIterSet (a, &ai);
378 else if (bi.ucs4 < ai.ucs4 )
382 if (!FcCharSetAddLeaf (fcs, bi.ucs4, bi.leaf))
384 FcCharSetIterNext (b, &bi);
389 FcCharSetIterSet (b, &bi);
396 if ((*overlap) (&leaf, ai.leaf, bi.leaf))
398 if (!FcCharSetAddLeaf (fcs, ai.ucs4, &leaf))
401 FcCharSetIterNext (a, &ai);
402 FcCharSetIterNext (b, &bi);
407 FcCharSetDestroy (fcs);
413 FcCharSetIntersectLeaf (FcCharLeaf *result,
414 const FcCharLeaf *al,
415 const FcCharLeaf *bl)
418 FcBool nonempty = FcFalse;
420 for (i = 0; i < 256/32; i++)
421 if ((result->map[i] = al->map[i] & bl->map[i]))
427 FcCharSetIntersect (const FcCharSet *a, const FcCharSet *b)
429 return FcCharSetOperate (a, b, FcCharSetIntersectLeaf, FcFalse, FcFalse);
433 FcCharSetUnionLeaf (FcCharLeaf *result,
434 const FcCharLeaf *al,
435 const FcCharLeaf *bl)
439 for (i = 0; i < 256/32; i++)
440 result->map[i] = al->map[i] | bl->map[i];
445 FcCharSetUnion (const FcCharSet *a, const FcCharSet *b)
447 return FcCharSetOperate (a, b, FcCharSetUnionLeaf, FcTrue, FcTrue);
451 FcCharSetSubtractLeaf (FcCharLeaf *result,
452 const FcCharLeaf *al,
453 const FcCharLeaf *bl)
456 FcBool nonempty = FcFalse;
458 for (i = 0; i < 256/32; i++)
459 if ((result->map[i] = al->map[i] & ~bl->map[i]))
465 FcCharSetSubtract (const FcCharSet *a, const FcCharSet *b)
467 return FcCharSetOperate (a, b, FcCharSetSubtractLeaf, FcTrue, FcFalse);
471 FcCharSetHasChar (const FcCharSet *fcs, FcChar32 ucs4)
473 FcCharLeaf *leaf = FcCharSetFindLeaf (fcs, ucs4);
476 return (leaf->map[(ucs4 & 0xff) >> 5] & (1 << (ucs4 & 0x1f))) != 0;
480 FcCharSetPopCount (FcChar32 c1)
483 FcChar32 c2 = (c1 >> 1) & 033333333333;
484 c2 = c1 - c2 - ((c2 >> 1) & 033333333333);
485 return (((c2 + (c2 >> 3)) & 030707070707) % 077);
489 FcCharSetIntersectCount (const FcCharSet *a, const FcCharSet *b)
491 FcCharSetIter ai, bi;
494 FcCharSetIterStart (a, &ai);
495 FcCharSetIterStart (b, &bi);
496 while (ai.leaf && bi.leaf)
498 if (ai.ucs4 == bi.ucs4)
500 FcChar32 *am = ai.leaf->map;
501 FcChar32 *bm = bi.leaf->map;
504 count += FcCharSetPopCount (*am++ & *bm++);
505 FcCharSetIterNext (a, &ai);
507 else if (ai.ucs4 < bi.ucs4)
510 FcCharSetIterSet (a, &ai);
512 if (bi.ucs4 < ai.ucs4)
515 FcCharSetIterSet (b, &bi);
522 FcCharSetCount (const FcCharSet *a)
527 for (FcCharSetIterStart (a, &ai); ai.leaf; FcCharSetIterNext (a, &ai))
530 FcChar32 *am = ai.leaf->map;
533 count += FcCharSetPopCount (*am++);
539 FcCharSetSubtractCount (const FcCharSet *a, const FcCharSet *b)
541 FcCharSetIter ai, bi;
544 FcCharSetIterStart (a, &ai);
545 FcCharSetIterStart (b, &bi);
548 if (ai.ucs4 <= bi.ucs4)
550 FcChar32 *am = ai.leaf->map;
552 if (ai.ucs4 == bi.ucs4)
554 FcChar32 *bm = bi.leaf->map;
556 count += FcCharSetPopCount (*am++ & ~*bm++);
561 count += FcCharSetPopCount (*am++);
563 FcCharSetIterNext (a, &ai);
568 FcCharSetIterSet (b, &bi);
575 * return FcTrue iff a is a subset of b
578 FcCharSetIsSubset (const FcCharSet *a, const FcCharSet *b)
583 if (a == b) return FcTrue;
586 while (ai < a->num && bi < b->num)
588 an = FcCharSetNumbers(a)[ai];
589 bn = FcCharSetNumbers(b)[bi];
591 * Check matching pages
595 FcChar32 *am = FcCharSetLeaf(a, ai)->map;
596 FcChar32 *bm = FcCharSetLeaf(b, bi)->map;
602 * Does am have any bits not in bm?
612 * Does a have any pages not in b?
619 int high = b->num - 1;
622 * Search for page 'an' in 'b'
626 int mid = (low + high) >> 1;
627 bn = FcCharSetNumbers(b)[mid];
639 while (bi < b->num && FcCharSetNumbers(b)[bi] < an)
644 * did we look at every page?
650 * These two functions efficiently walk the entire charmap for
651 * other software (like pango) that want their own copy
655 FcCharSetNextPage (const FcCharSet *a,
656 FcChar32 map[FC_CHARSET_MAP_SIZE],
663 FcCharSetIterSet (a, &ai);
665 return FC_CHARSET_DONE;
668 * Save current information
671 memcpy (map, ai.leaf->map, sizeof (ai.leaf->map));
675 FcCharSetIterNext (a, &ai);
682 FcCharSetFirstPage (const FcCharSet *a,
683 FcChar32 map[FC_CHARSET_MAP_SIZE],
687 return FcCharSetNextPage (a, map, next);
691 * old coverage API, rather hard to use correctly
695 FcCharSetCoverage (const FcCharSet *a, FcChar32 page, FcChar32 *result)
700 FcCharSetIterSet (a, &ai);
703 memset (result, '\0', 256 / 8);
708 memcpy (result, ai.leaf->map, sizeof (ai.leaf->map));
709 FcCharSetIterNext (a, &ai);
716 * ASCII representation of charsets.
718 * Each leaf is represented as 9 32-bit values, the code of the first character followed
719 * by 8 32 bit values for the leaf itself. Each value is encoded as 5 ASCII characters,
720 * only 85 different values are used to avoid control characters as well as the other
721 * characters used to encode font names. 85**5 > 2^32 so things work out, but
722 * it's not exactly human readable output. As a special case, 0 is encoded as a space
725 static const unsigned char charToValue[256] = {
726 /* "" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
727 /* "\b" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
728 /* "\020" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
729 /* "\030" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
730 /* " " */ 0xff, 0x00, 0xff, 0x01, 0x02, 0x03, 0x04, 0xff,
731 /* "(" */ 0x05, 0x06, 0x07, 0x08, 0xff, 0xff, 0x09, 0x0a,
732 /* "0" */ 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12,
733 /* "8" */ 0x13, 0x14, 0xff, 0x15, 0x16, 0xff, 0x17, 0x18,
734 /* "@" */ 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20,
735 /* "H" */ 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,
736 /* "P" */ 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30,
737 /* "X" */ 0x31, 0x32, 0x33, 0x34, 0xff, 0x35, 0x36, 0xff,
738 /* "`" */ 0xff, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d,
739 /* "h" */ 0x3e, 0x3f, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45,
740 /* "p" */ 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d,
741 /* "x" */ 0x4e, 0x4f, 0x50, 0x51, 0x52, 0x53, 0x54, 0xff,
742 /* "\200" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
743 /* "\210" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
744 /* "\220" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
745 /* "\230" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
746 /* "\240" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
747 /* "\250" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
748 /* "\260" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
749 /* "\270" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
750 /* "\300" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
751 /* "\310" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
752 /* "\320" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
753 /* "\330" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
754 /* "\340" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
755 /* "\350" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
756 /* "\360" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
757 /* "\370" */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
760 static const FcChar8 valueToChar[0x55] = {
761 /* 0x00 */ '!', '#', '$', '%', '&', '(', ')', '*',
762 /* 0x08 */ '+', '.', '/', '0', '1', '2', '3', '4',
763 /* 0x10 */ '5', '6', '7', '8', '9', ';', '<', '>',
764 /* 0x18 */ '?', '@', 'A', 'B', 'C', 'D', 'E', 'F',
765 /* 0x20 */ 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N',
766 /* 0x28 */ 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V',
767 /* 0x30 */ 'W', 'X', 'Y', 'Z', '[', ']', '^', 'a',
768 /* 0x38 */ 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i',
769 /* 0x40 */ 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
770 /* 0x48 */ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y',
771 /* 0x50 */ 'z', '{', '|', '}', '~',
775 FcCharSetParseValue (FcChar8 *string, FcChar32 *value)
789 for (i = 0; i < 5; i++)
791 if (!(c = (FcChar32) (unsigned char) *string++))
804 FcCharSetUnparseValue (FcStrBuf *buf, FcChar32 value)
809 return FcStrBufChar (buf, ' ');
814 FcChar8 *s = string + 5;
816 for (i = 0; i < 5; i++)
818 *--s = valueToChar[value % 85];
821 for (i = 0; i < 5; i++)
822 if (!FcStrBufChar (buf, *s++))
829 FcNameParseCharSet (FcChar8 *string)
838 c = FcCharSetCreate ();
843 string = FcCharSetParseValue (string, &ucs4);
847 for (i = 0; i < 256/32; i++)
849 string = FcCharSetParseValue (string, &temp.map[i]);
856 leaf = malloc (sizeof (FcCharLeaf));
860 if (!FcCharSetInsertLeaf (c, ucs4, leaf))
868 FcMemFree (FC_MEM_CHARSET, c->num * sizeof (FcCharLeaf *));
869 free (FcCharSetLeaves (c));
873 FcMemFree (FC_MEM_CHARSET, c->num * sizeof (FcChar16));
874 free (FcCharSetNumbers (c));
876 FcMemFree (FC_MEM_CHARSET, sizeof (FcCharSet));
883 FcNameUnparseCharSet (FcStrBuf *buf, const FcCharSet *c)
891 for (FcCharSetIterStart (c, &ci);
893 FcCharSetIterNext (c, &ci))
895 if (!FcCharSetUnparseValue (buf, ci.ucs4))
897 for (i = 0; i < 256/32; i++)
898 if (!FcCharSetUnparseValue (buf, ci.leaf->map[i]))
905 FcCharSetIter ci, checki;
907 /* null terminate for parser */
908 FcStrBufChar (buf, '\0');
909 /* step back over null for life after test */
911 check = FcNameParseCharSet (buf->buf + len);
912 FcCharSetIterStart (c, &ci);
913 FcCharSetIterStart (check, &checki);
914 while (ci.leaf || checki.leaf)
916 if (ci.ucs4 < checki.ucs4)
918 printf ("Missing leaf node at 0x%x\n", ci.ucs4);
919 FcCharSetIterNext (c, &ci);
921 else if (checki.ucs4 < ci.ucs4)
923 printf ("Extra leaf node at 0x%x\n", checki.ucs4);
924 FcCharSetIterNext (check, &checki);
929 FcChar32 *cm = ci.leaf->map;
930 FcChar32 *checkm = checki.leaf->map;
932 for (i = 0; i < 256; i += 32)
935 printf ("Mismatching sets at 0x%08x: 0x%08x != 0x%08x\n",
936 ci.ucs4 + i, *cm, *checkm);
940 FcCharSetIterNext (c, &ci);
941 FcCharSetIterNext (check, &checki);
944 if ((missing = FcCharSetSubtractCount (c, check)))
945 printf ("%d missing in reparsed result\n", missing);
946 if ((missing = FcCharSetSubtractCount (check, c)))
947 printf ("%d extra in reparsed result\n", missing);
948 FcCharSetDestroy (check);
955 typedef struct _FcCharLeafEnt FcCharLeafEnt;
957 struct _FcCharLeafEnt {
963 #define FC_CHAR_LEAF_BLOCK (4096 / sizeof (FcCharLeafEnt))
964 #define FC_CHAR_LEAF_HASH_SIZE 257
966 typedef struct _FcCharSetEnt FcCharSetEnt;
968 struct _FcCharSetEnt {
974 typedef struct _FcCharSetOrigEnt FcCharSetOrigEnt;
976 struct _FcCharSetOrigEnt {
977 FcCharSetOrigEnt *next;
978 const FcCharSet *orig;
979 const FcCharSet *frozen;
982 #define FC_CHAR_SET_HASH_SIZE 67
984 struct _FcCharSetFreezer {
985 FcCharLeafEnt *leaf_hash_table[FC_CHAR_LEAF_HASH_SIZE];
986 FcCharLeafEnt **leaf_blocks;
987 int leaf_block_count;
988 FcCharSetEnt *set_hash_table[FC_CHAR_SET_HASH_SIZE];
989 FcCharSetOrigEnt *orig_hash_table[FC_CHAR_SET_HASH_SIZE];
990 FcCharLeafEnt *current_block;
994 int leaves_allocated;
995 int charsets_allocated;
998 static FcCharLeafEnt *
999 FcCharLeafEntCreate (FcCharSetFreezer *freezer)
1001 if (!freezer->leaf_remain)
1003 FcCharLeafEnt **newBlocks;
1005 freezer->leaf_block_count++;
1006 newBlocks = realloc (freezer->leaf_blocks, freezer->leaf_block_count * sizeof (FcCharLeafEnt *));
1009 freezer->leaf_blocks = newBlocks;
1010 freezer->current_block = freezer->leaf_blocks[freezer->leaf_block_count-1] = malloc (FC_CHAR_LEAF_BLOCK * sizeof (FcCharLeafEnt));
1011 if (!freezer->current_block)
1013 FcMemAlloc (FC_MEM_CHARLEAF, FC_CHAR_LEAF_BLOCK * sizeof (FcCharLeafEnt));
1014 freezer->leaf_remain = FC_CHAR_LEAF_BLOCK;
1016 freezer->leaf_remain--;
1017 freezer->leaves_allocated++;
1018 return freezer->current_block++;
1022 FcCharLeafHash (FcCharLeaf *leaf)
1027 for (i = 0; i < 256/32; i++)
1028 hash = ((hash << 1) | (hash >> 31)) ^ leaf->map[i];
1033 FcCharSetFreezeLeaf (FcCharSetFreezer *freezer, FcCharLeaf *leaf)
1035 FcChar32 hash = FcCharLeafHash (leaf);
1036 FcCharLeafEnt **bucket = &freezer->leaf_hash_table[hash % FC_CHAR_LEAF_HASH_SIZE];
1039 for (ent = *bucket; ent; ent = ent->next)
1041 if (ent->hash == hash && !memcmp (&ent->leaf, leaf, sizeof (FcCharLeaf)))
1045 ent = FcCharLeafEntCreate(freezer);
1050 ent->next = *bucket;
1056 FcCharSetHash (FcCharSet *fcs)
1061 /* hash in leaves */
1062 for (i = 0; i < fcs->num * (int) (sizeof (FcCharLeaf *) / sizeof (FcChar32)); i++)
1063 hash = ((hash << 1) | (hash >> 31)) ^ (FcChar32)(FcCharSetLeaf(fcs, i)->map);
1064 /* hash in numbers */
1065 for (i = 0; i < fcs->num; i++)
1066 hash = ((hash << 1) | (hash >> 31)) ^ *FcCharSetNumbers(fcs);
1071 FcCharSetFreezeOrig (FcCharSetFreezer *freezer, const FcCharSet *orig, const FcCharSet *frozen)
1073 FcCharSetOrigEnt **bucket = &freezer->orig_hash_table[((uintptr_t) orig) & FC_CHAR_SET_HASH_SIZE];
1074 FcCharSetOrigEnt *ent;
1076 ent = malloc (sizeof (FcCharSetOrigEnt));
1080 ent->frozen = frozen;
1081 ent->next = *bucket;
1087 FcCharSetFreezeBase (FcCharSetFreezer *freezer, FcCharSet *fcs, const FcCharSet *orig)
1089 FcChar32 hash = FcCharSetHash (fcs);
1090 FcCharSetEnt **bucket = &freezer->set_hash_table[hash % FC_CHAR_SET_HASH_SIZE];
1095 for (ent = *bucket; ent; ent = ent->next)
1097 if (ent->hash == hash &&
1098 ent->set.num == fcs->num &&
1099 !memcmp (FcCharSetNumbers(&ent->set),
1100 FcCharSetNumbers(fcs),
1101 fcs->num * sizeof (FcChar16)))
1106 for (i = 0; i < fcs->num; i++)
1107 if (FcCharSetLeaf(&ent->set, i) != FcCharSetLeaf(fcs, i))
1114 size = (sizeof (FcCharSetEnt) +
1115 fcs->num * sizeof (FcCharLeaf *) +
1116 fcs->num * sizeof (FcChar16));
1117 ent = malloc (size);
1120 FcMemAlloc (FC_MEM_CHARSET, size);
1122 freezer->charsets_allocated++;
1124 ent->set.ref = FC_REF_CONSTANT;
1125 ent->set.num = fcs->num;
1128 intptr_t *ent_leaves;
1130 ent->set.leaves_offset = sizeof (ent->set);
1131 ent->set.numbers_offset = (ent->set.leaves_offset +
1132 fcs->num * sizeof (intptr_t));
1134 ent_leaves = FcCharSetLeaves (&ent->set);
1135 for (i = 0; i < fcs->num; i++)
1136 ent_leaves[i] = FcPtrToOffset (ent_leaves,
1137 FcCharSetLeaf (fcs, i));
1138 memcpy (FcCharSetNumbers (&ent->set),
1139 FcCharSetNumbers (fcs),
1140 fcs->num * sizeof (FcChar16));
1144 ent->set.leaves_offset = 0;
1145 ent->set.numbers_offset = 0;
1149 ent->next = *bucket;
1155 static const FcCharSet *
1156 FcCharSetFindFrozen (FcCharSetFreezer *freezer, const FcCharSet *orig)
1158 FcCharSetOrigEnt **bucket = &freezer->orig_hash_table[((uintptr_t) orig) & FC_CHAR_SET_HASH_SIZE];
1159 FcCharSetOrigEnt *ent;
1161 for (ent = *bucket; ent; ent = ent->next)
1162 if (ent->orig == orig)
1168 FcCharSetFreeze (FcCharSetFreezer *freezer, const FcCharSet *fcs)
1171 const FcCharSet *n = 0;
1175 b = FcCharSetCreate ();
1178 for (i = 0; i < fcs->num; i++)
1180 l = FcCharSetFreezeLeaf (freezer, FcCharSetLeaf(fcs, i));
1183 if (!FcCharSetInsertLeaf (b, FcCharSetNumbers(fcs)[i] << 8, l))
1186 n = FcCharSetFreezeBase (freezer, b, fcs);
1187 if (!FcCharSetFreezeOrig (freezer, fcs, n))
1192 freezer->charsets_seen++;
1193 freezer->leaves_seen += fcs->num;
1197 FcMemFree (FC_MEM_CHARSET, b->num * sizeof (FcCharLeaf *));
1198 free (FcCharSetLeaves (b));
1202 FcMemFree (FC_MEM_CHARSET, b->num * sizeof (FcChar16));
1203 free (FcCharSetNumbers (b));
1205 FcMemFree (FC_MEM_CHARSET, sizeof (FcCharSet));
1212 FcCharSetFreezerCreate (void)
1214 FcCharSetFreezer *freezer;
1216 freezer = calloc (1, sizeof (FcCharSetFreezer));
1221 FcCharSetFreezerDestroy (FcCharSetFreezer *freezer)
1225 if (FcDebug() & FC_DBG_CACHE)
1227 printf ("\ncharsets %d -> %d leaves %d -> %d\n",
1228 freezer->charsets_seen, freezer->charsets_allocated,
1229 freezer->leaves_seen, freezer->leaves_allocated);
1231 for (i = 0; i < FC_CHAR_SET_HASH_SIZE; i++)
1233 FcCharSetEnt *ent, *next;
1234 for (ent = freezer->set_hash_table[i]; ent; ent = next)
1241 for (i = 0; i < FC_CHAR_SET_HASH_SIZE; i++)
1243 FcCharSetOrigEnt *ent, *next;
1244 for (ent = freezer->orig_hash_table[i]; ent; ent = next)
1251 for (i = 0; i < freezer->leaf_block_count; i++)
1252 free (freezer->leaf_blocks[i]);
1254 free (freezer->leaf_blocks);
1259 FcCharSetSerializeAlloc (FcSerialize *serialize, const FcCharSet *cs)
1265 if (cs->ref != FC_REF_CONSTANT)
1267 if (!serialize->cs_freezer)
1269 serialize->cs_freezer = FcCharSetFreezerCreate ();
1270 if (!serialize->cs_freezer)
1273 if (FcCharSetFindFrozen (serialize->cs_freezer, cs))
1276 cs = FcCharSetFreeze (serialize->cs_freezer, cs);
1279 leaves = FcCharSetLeaves (cs);
1280 numbers = FcCharSetNumbers (cs);
1282 if (!FcSerializeAlloc (serialize, cs, sizeof (FcCharSet)))
1284 if (!FcSerializeAlloc (serialize, leaves, cs->num * sizeof (intptr_t)))
1286 if (!FcSerializeAlloc (serialize, numbers, cs->num * sizeof (FcChar16)))
1288 for (i = 0; i < cs->num; i++)
1289 if (!FcSerializeAlloc (serialize, FcCharSetLeaf(cs, i),
1290 sizeof (FcCharLeaf)))
1296 FcCharSetSerialize(FcSerialize *serialize, const FcCharSet *cs)
1298 FcCharSet *cs_serialized;
1299 intptr_t *leaves, *leaves_serialized;
1300 FcChar16 *numbers, *numbers_serialized;
1301 FcCharLeaf *leaf, *leaf_serialized;
1304 if (cs->ref != FC_REF_CONSTANT && serialize->cs_freezer)
1306 cs = FcCharSetFindFrozen (serialize->cs_freezer, cs);
1311 cs_serialized = FcSerializePtr (serialize, cs);
1315 cs_serialized->ref = FC_REF_CONSTANT;
1316 cs_serialized->num = cs->num;
1320 leaves = FcCharSetLeaves (cs);
1321 leaves_serialized = FcSerializePtr (serialize, leaves);
1322 if (!leaves_serialized)
1325 cs_serialized->leaves_offset = FcPtrToOffset (cs_serialized,
1328 numbers = FcCharSetNumbers (cs);
1329 numbers_serialized = FcSerializePtr (serialize, numbers);
1333 cs_serialized->numbers_offset = FcPtrToOffset (cs_serialized,
1334 numbers_serialized);
1336 for (i = 0; i < cs->num; i++)
1338 leaf = FcCharSetLeaf (cs, i);
1339 leaf_serialized = FcSerializePtr (serialize, leaf);
1340 if (!leaf_serialized)
1342 *leaf_serialized = *leaf;
1343 leaves_serialized[i] = FcPtrToOffset (leaves_serialized,
1345 numbers_serialized[i] = numbers[i];
1350 cs_serialized->leaves_offset = 0;
1351 cs_serialized->numbers_offset = 0;
1354 return cs_serialized;