]>
git.wh0rd.org - fontconfig.git/blob - src/fclang.c
2 * $RCSId: xc/lib/fontconfig/src/fclang.c,v 1.7 2002/08/26 23:34:31 keithp Exp $
4 * Copyright © 2002 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.
37 #include "../fc-lang/fclang.h"
40 FcChar32 map
[NUM_LANG_SET_MAP
];
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)
48 FcFreeTypeLangSet (const FcCharSet
*charset
,
49 const FcChar8
*exclusiveLang
)
53 const FcCharSet
*exclusiveCharset
= 0;
58 exclusiveCharset
= FcCharSetForLang (exclusiveLang
);
59 ls
= FcLangSetCreate ();
62 for (i
= 0; i
< NUM_LANG_CHAR_SET
; i
++)
65 * Check for Han charsets to make fonts
66 * which advertise support for a single language
67 * not support other Han languages
69 if (exclusiveCharset
&&
70 FcFreeTypeIsExclusiveLang (fcLangCharSets
[i
].lang
))
72 if (fcLangCharSets
[i
].charset
.num
!= exclusiveCharset
->num
)
75 for (j
= 0; j
< fcLangCharSets
[i
].charset
.num
; j
++)
76 if (FcCharSetGetLeaf(&fcLangCharSets
[i
].charset
, j
) !=
77 FcCharSetGetLeaf(exclusiveCharset
, j
))
80 missing
= FcCharSetSubtractCount (&fcLangCharSets
[i
].charset
, charset
);
81 if (FcDebug() & FC_DBG_SCANV
)
83 if (missing
&& missing
< 10)
85 FcCharSet
*missed
= FcCharSetSubtract (&fcLangCharSets
[i
].charset
,
88 FcChar32 map
[FC_CHARSET_MAP_SIZE
];
91 printf ("\n%s(%d) ", fcLangCharSets
[i
].lang
, missing
);
93 for (ucs4
= FcCharSetFirstPage (missed
, map
, &next
);
94 ucs4
!= FC_CHARSET_DONE
;
95 ucs4
= FcCharSetNextPage (missed
, map
, &next
))
98 for (i
= 0; i
< FC_CHARSET_MAP_SIZE
; i
++)
101 for (j
= 0; j
< 32; j
++)
102 if (map
[i
] & (1 << j
))
103 printf (" %04x", ucs4
+ i
* 32 + j
);
107 FcCharSetDestroy (missed
);
110 printf ("%s(%d) ", fcLangCharSets
[i
].lang
, missing
);
113 FcLangSetBitSet (ls
, i
);
116 if (FcDebug() & FC_DBG_SCANV
)
123 #define FcLangEnd(c) ((c) == '-' || (c) == '\0')
126 FcLangCompare (const FcChar8
*s1
, const FcChar8
*s2
)
129 FcLangResult result
= FcLangDifferentLang
;
140 if (FcLangEnd (c1
) && FcLangEnd (c2
))
141 result
= FcLangDifferentCountry
;
147 result
= FcLangDifferentCountry
;
152 * Return FcTrue when super contains sub.
154 * super contains sub if super and sub have the same
155 * language and either the same country or one
156 * is missing the country
160 FcLangContains (const FcChar8
*super
, const FcChar8
*sub
)
173 /* see if super has a country while sub is mising one */
174 if (c1
== '-' && c2
== '\0')
176 /* see if sub has a country while super is mising one */
177 if (c1
== '\0' && c2
== '-')
187 FcCharSetForLang (const FcChar8
*lang
)
191 for (i
= 0; i
< NUM_LANG_CHAR_SET
; i
++)
193 switch (FcLangCompare (lang
, fcLangCharSets
[i
].lang
)) {
195 return &fcLangCharSets
[i
].charset
;
196 case FcLangDifferentCountry
:
205 return &fcLangCharSets
[i
].charset
;
209 FcLangSetCreate (void)
213 ls
= malloc (sizeof (FcLangSet
));
216 FcMemAlloc (FC_MEM_LANGSET
, sizeof (FcLangSet
));
217 memset (ls
->map
, '\0', sizeof (ls
->map
));
223 FcLangSetDestroy (FcLangSet
*ls
)
226 FcStrSetDestroy (ls
->extra
);
227 FcMemFree (FC_MEM_LANGSET
, sizeof (FcLangSet
));
232 FcLangSetCopy (const FcLangSet
*ls
)
236 new = FcLangSetCreate ();
239 memcpy (new->map
, ls
->map
, sizeof (new->map
));
245 new->extra
= FcStrSetCreate ();
249 list
= FcStrListCreate (ls
->extra
);
253 while ((extra
= FcStrListNext (list
)))
254 if (!FcStrSetAdd (new->extra
, extra
))
256 FcStrListDone (list
);
259 FcStrListDone (list
);
263 FcLangSetDestroy (new);
269 FcLangSetIndex (const FcChar8
*lang
)
271 int low
, high
, mid
= 0;
273 FcChar8 firstChar
= FcToLower(lang
[0]);
274 FcChar8 secondChar
= firstChar
? FcToLower(lang
[1]) : '\0';
279 high
= fcLangCharSetRanges
[0].begin
;
281 else if(firstChar
> 'z')
283 low
= fcLangCharSetRanges
[25].begin
;
284 high
= NUM_LANG_CHAR_SET
- 1;
288 low
= fcLangCharSetRanges
[firstChar
- 'a'].begin
;
289 high
= fcLangCharSetRanges
[firstChar
- 'a'].end
;
292 return -low
; /* next entry after where it would be */
297 mid
= (high
+ low
) >> 1;
298 if(fcLangCharSets
[mid
].lang
[0] != firstChar
)
299 cmp
= FcStrCmpIgnoreCase(fcLangCharSets
[mid
].lang
, lang
);
301 { /* fast path for resolving 2-letter languages (by far the most common) after
302 * finding the first char (probably already true because of the hash table) */
303 cmp
= fcLangCharSets
[mid
].lang
[1] - secondChar
;
305 (fcLangCharSets
[mid
].lang
[2] != '\0' ||
308 cmp
= FcStrCmpIgnoreCase(fcLangCharSets
[mid
].lang
+2,
325 FcLangSetAdd (FcLangSet
*ls
, const FcChar8
*lang
)
329 id
= FcLangSetIndex (lang
);
332 FcLangSetBitSet (ls
, id
);
337 ls
->extra
= FcStrSetCreate ();
341 return FcStrSetAdd (ls
->extra
, lang
);
345 FcLangSetHasLang (const FcLangSet
*ls
, const FcChar8
*lang
)
348 FcLangResult best
, r
;
351 id
= FcLangSetIndex (lang
);
354 else if (FcLangSetBitGet (ls
, id
))
356 best
= FcLangDifferentLang
;
357 for (i
= id
- 1; i
>= 0; i
--)
359 r
= FcLangCompare (lang
, fcLangCharSets
[i
].lang
);
360 if (r
== FcLangDifferentLang
)
362 if (FcLangSetBitGet (ls
, i
) && r
< best
)
365 for (i
= id
; i
< NUM_LANG_CHAR_SET
; i
++)
367 r
= FcLangCompare (lang
, fcLangCharSets
[i
].lang
);
368 if (r
== FcLangDifferentLang
)
370 if (FcLangSetBitGet (ls
, i
) && r
< best
)
375 FcStrList
*list
= FcStrListCreate (ls
->extra
);
381 while (best
> FcLangEqual
&& (extra
= FcStrListNext (list
)))
383 r
= FcLangCompare (lang
, extra
);
387 FcStrListDone (list
);
394 FcLangSetCompareStrSet (const FcLangSet
*ls
, FcStrSet
*set
)
396 FcStrList
*list
= FcStrListCreate (set
);
397 FcLangResult r
, best
= FcLangDifferentLang
;
402 while (best
> FcLangEqual
&& (extra
= FcStrListNext (list
)))
404 r
= FcLangSetHasLang (ls
, extra
);
408 FcStrListDone (list
);
414 FcLangSetCompare (const FcLangSet
*lsa
, const FcLangSet
*lsb
)
417 FcLangResult best
, r
;
419 for (i
= 0; i
< NUM_LANG_SET_MAP
; i
++)
420 if (lsa
->map
[i
] & lsb
->map
[i
])
422 best
= FcLangDifferentLang
;
423 for (j
= 0; j
< NUM_COUNTRY_SET
; j
++)
424 for (i
= 0; i
< NUM_LANG_SET_MAP
; i
++)
425 if ((lsa
->map
[i
] & fcLangCountrySets
[j
][i
]) &&
426 (lsb
->map
[i
] & fcLangCountrySets
[j
][i
]))
428 best
= FcLangDifferentCountry
;
433 r
= FcLangSetCompareStrSet (lsb
, lsa
->extra
);
437 if (best
> FcLangEqual
&& lsb
->extra
)
439 r
= FcLangSetCompareStrSet (lsa
, lsb
->extra
);
447 * Used in computing values -- mustn't allocate any storage
450 FcLangSetPromote (const FcChar8
*lang
)
453 static FcStrSet strs
;
457 memset (ls
.map
, '\0', sizeof (ls
.map
));
459 id
= FcLangSetIndex (lang
);
462 FcLangSetBitSet (&ls
, id
);
471 str
= (FcChar8
*) lang
;
477 FcLangSetHash (const FcLangSet
*ls
)
482 for (i
= 0; i
< NUM_LANG_SET_MAP
; i
++)
490 FcNameParseLangSet (const FcChar8
*string
)
496 ls
= FcLangSetCreate ();
502 for(i
= 0; i
< 31;i
++)
505 if(c
== '\0' || c
== '|')
506 break; /* end of this code */
510 if (!FcLangSetAdd (ls
, lang
))
517 FcLangSetDestroy (ls
);
523 FcNameUnparseLangSet (FcStrBuf
*buf
, const FcLangSet
*ls
)
527 FcBool first
= FcTrue
;
529 for (i
= 0; i
< NUM_LANG_SET_MAP
; i
++)
531 if ((bits
= ls
->map
[i
]))
533 for (bit
= 0; bit
<= 31; bit
++)
534 if (bits
& (1 << bit
))
536 int id
= (i
<< 5) | bit
;
538 if (!FcStrBufChar (buf
, '|'))
540 if (!FcStrBufString (buf
, fcLangCharSets
[id
].lang
))
548 FcStrList
*list
= FcStrListCreate (ls
->extra
);
553 while ((extra
= FcStrListNext (list
)))
556 if (!FcStrBufChar (buf
, '|'))
558 if (!FcStrBufString (buf
, extra
))
567 FcLangSetEqual (const FcLangSet
*lsa
, const FcLangSet
*lsb
)
571 for (i
= 0; i
< NUM_LANG_SET_MAP
; i
++)
573 if (lsa
->map
[i
] != lsb
->map
[i
])
576 if (!lsa
->extra
&& !lsb
->extra
)
578 if (lsa
->extra
&& lsb
->extra
)
579 return FcStrSetEqual (lsa
->extra
, lsb
->extra
);
584 FcLangSetContainsLang (const FcLangSet
*ls
, const FcChar8
*lang
)
589 id
= FcLangSetIndex (lang
);
592 else if (FcLangSetBitGet (ls
, id
))
595 * search up and down among equal languages for a match
597 for (i
= id
- 1; i
>= 0; i
--)
599 if (FcLangCompare (fcLangCharSets
[i
].lang
, lang
) == FcLangDifferentLang
)
601 if (FcLangSetBitGet (ls
, i
) &&
602 FcLangContains (fcLangCharSets
[i
].lang
, lang
))
605 for (i
= id
; i
< NUM_LANG_CHAR_SET
; i
++)
607 if (FcLangCompare (fcLangCharSets
[i
].lang
, lang
) == FcLangDifferentLang
)
609 if (FcLangSetBitGet (ls
, i
) &&
610 FcLangContains (fcLangCharSets
[i
].lang
, lang
))
615 FcStrList
*list
= FcStrListCreate (ls
->extra
);
620 while ((extra
= FcStrListNext (list
)))
622 if (FcLangContains (extra
, lang
))
625 FcStrListDone (list
);
634 * return FcTrue if lsa contains every language in lsb
637 FcLangSetContains (const FcLangSet
*lsa
, const FcLangSet
*lsb
)
642 if (FcDebug() & FC_DBG_MATCHV
)
644 printf ("FcLangSet "); FcLangSetPrint (lsa
);
645 printf (" contains "); FcLangSetPrint (lsb
);
649 * check bitmaps for missing language support
651 for (i
= 0; i
< NUM_LANG_SET_MAP
; i
++)
653 missing
= lsb
->map
[i
] & ~lsa
->map
[i
];
656 for (j
= 0; j
< 32; j
++)
657 if (missing
& (1 << j
))
659 if (!FcLangSetContainsLang (lsa
,
660 fcLangCharSets
[i
*32 + j
].lang
))
662 if (FcDebug() & FC_DBG_MATCHV
)
663 printf ("\tMissing bitmap %s\n", fcLangCharSets
[i
*32+j
].lang
);
671 FcStrList
*list
= FcStrListCreate (lsb
->extra
);
676 while ((extra
= FcStrListNext (list
)))
678 if (!FcLangSetContainsLang (lsa
, extra
))
680 if (FcDebug() & FC_DBG_MATCHV
)
681 printf ("\tMissing string %s\n", extra
);
685 FcStrListDone (list
);
693 static FcLangSet
** langsets
= 0;
694 static int langset_bank_count
= 0, langset_ptr
= 0, langset_count
= 0;
697 FcLangSetNewBank (void)
702 /* ideally, should only write one copy of any particular FcLangSet */
704 FcLangSetNeededBytes (const FcLangSet
*l
)
707 return sizeof (FcLangSet
);
711 FcLangSetEnsureBank (int bi
)
713 if (!langsets
|| bi
>= langset_bank_count
)
715 int new_count
= langset_bank_count
+ 2;
718 tt
= realloc(langsets
, new_count
* sizeof(FcLangSet
*));
723 for (i
= langset_bank_count
; i
< new_count
; i
++)
725 langset_bank_count
= new_count
;
732 FcLangSetDistributeBytes (FcCache
* metadata
, void * block_ptr
)
734 int bi
= FcCacheBankToIndex(metadata
->bank
);
735 if (!FcLangSetEnsureBank(bi
))
738 langsets
[bi
] = block_ptr
;
739 block_ptr
= (void *)((char *)block_ptr
+
740 langset_count
* sizeof(FcLangSet
));
742 metadata
->langset_count
= langset_count
;
747 FcLangSetSerialize(int bank
, FcLangSet
*l
)
749 int p
= langset_ptr
, bi
= FcCacheBankToIndex(bank
);
753 langsets
[bi
][langset_ptr
] = *l
;
754 langsets
[bi
][langset_ptr
].extra
= 0;
756 return &langsets
[bi
][p
];
760 FcLangSetUnserialize (FcCache metadata
, void *block_ptr
)
762 int bi
= FcCacheBankToIndex(metadata
.bank
);
763 if (!FcLangSetEnsureBank(bi
))
766 FcMemAlloc (FC_MEM_LANGSET
, metadata
.langset_count
* sizeof(FcLangSet
));
767 langsets
[bi
] = (FcLangSet
*)block_ptr
;
768 block_ptr
= (void *)((char *)block_ptr
+
769 metadata
.langset_count
* sizeof(FcLangSet
));