fontconfig/src/fclang.c

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/*
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* fontconfig/src/fclang.c
*
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* Copyright © 2002 Keith Packard
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the author(s) not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. The authors make no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* THE AUTHOR(S) DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#include "fcint.h"
#include "fcftint.h"
typedef struct {
const FcChar8 lang[8];
const FcCharSet charset;
} FcLangCharSet;
typedef struct {
int begin;
int end;
} FcLangCharSetRange;
#include "../fc-lang/fclang.h"
struct _FcLangSet {
FcStrSet *extra;
FcChar32 map_size;
FcChar32 map[NUM_LANG_SET_MAP];
};
static void
FcLangSetBitSet (FcLangSet *ls,
unsigned int id)
{
int bucket;
id = fcLangCharSetIndices[id];
bucket = id >> 5;
if (bucket >= ls->map_size)
return; /* shouldn't happen really */
ls->map[bucket] |= ((FcChar32) 1 << (id & 0x1f));
}
static FcBool
FcLangSetBitGet (const FcLangSet *ls,
unsigned int id)
{
int bucket;
id = fcLangCharSetIndices[id];
bucket = id >> 5;
if (bucket >= ls->map_size)
return FcFalse;
return ((ls->map[bucket] >> (id & 0x1f)) & 1) ? FcTrue : FcFalse;
}
static void
FcLangSetBitReset (FcLangSet *ls,
unsigned int id)
{
int bucket;
id = fcLangCharSetIndices[id];
bucket = id >> 5;
if (bucket >= ls->map_size)
return; /* shouldn't happen really */
ls->map[bucket] &= ~((FcChar32) 1 << (id & 0x1f));
}
FcLangSet *
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FcFreeTypeLangSet (const FcCharSet *charset,
const FcChar8 *exclusiveLang)
{
Add functionality to allow fontconfig data structure serialization. This patch allows the fundamental fontconfig data structures to be serialized. I've converted everything from FcPattern down to be able to use *Ptr objects, which can be either static or dynamic (using a union which either contains a pointer or an index) and replaced storage of pointers in the heap with the appropriate *Ptr object. I then changed all writes of pointers to the heap with a *CreateDynamic call, which creates a dynamic Ptr object pointing to the same object as before. This way, the fundamental fontconfig semantics should be unchanged; I did not have to change external signatures this way, although I did change some internal signatures. When given a *Ptr object, just run *U to get back to a normal pointer; it gives the right answer regardless of whether we're using static or dynamic storage. I've also implemented a Fc*Serialize call. Calling FcFontSetSerialize converts the dynamic FcFontSets contained in the config object to static FcFontSets and also converts its dependencies (e.g. everything you'd need to write to disk) to static objects. Note that you have to call Fc*PrepareSerialize first; this call will count the number of objects that actually needs to be allocated, so that we can avoid realloc. The Fc*Serialize calls then check the static pointers for nullness, and allocate the buffers if necessary. I've tested the execution of fc-list and fc-match after Fc*Serialize and they appear to work the same way.
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int i, j;
FcChar32 missing;
const FcCharSet *exclusiveCharset = 0;
FcLangSet *ls;
if (exclusiveLang)
exclusiveCharset = FcLangGetCharSet (exclusiveLang);
ls = FcLangSetCreate ();
if (!ls)
return 0;
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if (FcDebug() & FC_DBG_LANGSET)
{
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printf ("font charset");
FcCharSetPrint (charset);
printf ("\n");
}
for (i = 0; i < NUM_LANG_CHAR_SET; i++)
{
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if (FcDebug() & FC_DBG_LANGSET)
{
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printf ("%s charset", fcLangCharSets[i].lang);
FcCharSetPrint (&fcLangCharSets[i].charset);
printf ("\n");
}
/*
* Check for Han charsets to make fonts
* which advertise support for a single language
* not support other Han languages
*/
if (exclusiveCharset &&
Add functionality to allow fontconfig data structure serialization. This patch allows the fundamental fontconfig data structures to be serialized. I've converted everything from FcPattern down to be able to use *Ptr objects, which can be either static or dynamic (using a union which either contains a pointer or an index) and replaced storage of pointers in the heap with the appropriate *Ptr object. I then changed all writes of pointers to the heap with a *CreateDynamic call, which creates a dynamic Ptr object pointing to the same object as before. This way, the fundamental fontconfig semantics should be unchanged; I did not have to change external signatures this way, although I did change some internal signatures. When given a *Ptr object, just run *U to get back to a normal pointer; it gives the right answer regardless of whether we're using static or dynamic storage. I've also implemented a Fc*Serialize call. Calling FcFontSetSerialize converts the dynamic FcFontSets contained in the config object to static FcFontSets and also converts its dependencies (e.g. everything you'd need to write to disk) to static objects. Note that you have to call Fc*PrepareSerialize first; this call will count the number of objects that actually needs to be allocated, so that we can avoid realloc. The Fc*Serialize calls then check the static pointers for nullness, and allocate the buffers if necessary. I've tested the execution of fc-list and fc-match after Fc*Serialize and they appear to work the same way.
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FcFreeTypeIsExclusiveLang (fcLangCharSets[i].lang))
{
Add functionality to allow fontconfig data structure serialization. This patch allows the fundamental fontconfig data structures to be serialized. I've converted everything from FcPattern down to be able to use *Ptr objects, which can be either static or dynamic (using a union which either contains a pointer or an index) and replaced storage of pointers in the heap with the appropriate *Ptr object. I then changed all writes of pointers to the heap with a *CreateDynamic call, which creates a dynamic Ptr object pointing to the same object as before. This way, the fundamental fontconfig semantics should be unchanged; I did not have to change external signatures this way, although I did change some internal signatures. When given a *Ptr object, just run *U to get back to a normal pointer; it gives the right answer regardless of whether we're using static or dynamic storage. I've also implemented a Fc*Serialize call. Calling FcFontSetSerialize converts the dynamic FcFontSets contained in the config object to static FcFontSets and also converts its dependencies (e.g. everything you'd need to write to disk) to static objects. Note that you have to call Fc*PrepareSerialize first; this call will count the number of objects that actually needs to be allocated, so that we can avoid realloc. The Fc*Serialize calls then check the static pointers for nullness, and allocate the buffers if necessary. I've tested the execution of fc-list and fc-match after Fc*Serialize and they appear to work the same way.
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if (fcLangCharSets[i].charset.num != exclusiveCharset->num)
continue;
for (j = 0; j < fcLangCharSets[i].charset.num; j++)
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if (FcCharSetLeaf(&fcLangCharSets[i].charset, j) !=
FcCharSetLeaf(exclusiveCharset, j))
Add functionality to allow fontconfig data structure serialization. This patch allows the fundamental fontconfig data structures to be serialized. I've converted everything from FcPattern down to be able to use *Ptr objects, which can be either static or dynamic (using a union which either contains a pointer or an index) and replaced storage of pointers in the heap with the appropriate *Ptr object. I then changed all writes of pointers to the heap with a *CreateDynamic call, which creates a dynamic Ptr object pointing to the same object as before. This way, the fundamental fontconfig semantics should be unchanged; I did not have to change external signatures this way, although I did change some internal signatures. When given a *Ptr object, just run *U to get back to a normal pointer; it gives the right answer regardless of whether we're using static or dynamic storage. I've also implemented a Fc*Serialize call. Calling FcFontSetSerialize converts the dynamic FcFontSets contained in the config object to static FcFontSets and also converts its dependencies (e.g. everything you'd need to write to disk) to static objects. Note that you have to call Fc*PrepareSerialize first; this call will count the number of objects that actually needs to be allocated, so that we can avoid realloc. The Fc*Serialize calls then check the static pointers for nullness, and allocate the buffers if necessary. I've tested the execution of fc-list and fc-match after Fc*Serialize and they appear to work the same way.
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continue;
}
missing = FcCharSetSubtractCount (&fcLangCharSets[i].charset, charset);
if (FcDebug() & FC_DBG_SCANV)
{
if (missing && missing < 10)
{
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FcCharSet *missed = FcCharSetSubtract (&fcLangCharSets[i].charset,
charset);
FcChar32 ucs4;
FcChar32 map[FC_CHARSET_MAP_SIZE];
FcChar32 next;
printf ("\n%s(%u) ", fcLangCharSets[i].lang, missing);
printf ("{");
for (ucs4 = FcCharSetFirstPage (missed, map, &next);
ucs4 != FC_CHARSET_DONE;
ucs4 = FcCharSetNextPage (missed, map, &next))
{
int i, j;
for (i = 0; i < FC_CHARSET_MAP_SIZE; i++)
if (map[i])
{
for (j = 0; j < 32; j++)
if (map[i] & (1 << j))
printf (" %04x", ucs4 + i * 32 + j);
}
}
printf (" }\n\t");
FcCharSetDestroy (missed);
}
else
printf ("%s(%u) ", fcLangCharSets[i].lang, missing);
}
if (!missing)
FcLangSetBitSet (ls, i);
}
if (FcDebug() & FC_DBG_SCANV)
printf ("\n");
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return ls;
}
#define FcLangEnd(c) ((c) == '-' || (c) == '\0')
FcLangResult
FcLangCompare (const FcChar8 *s1, const FcChar8 *s2)
{
FcChar8 c1, c2;
FcLangResult result = FcLangDifferentLang;
for (;;)
{
c1 = *s1++;
c2 = *s2++;
c1 = FcToLower (c1);
c2 = FcToLower (c2);
if (c1 != c2)
{
if (FcLangEnd (c1) && FcLangEnd (c2))
result = FcLangDifferentTerritory;
return result;
}
else if (!c1)
return FcLangEqual;
else if (c1 == '-')
result = FcLangDifferentTerritory;
}
}
/*
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* Return FcTrue when super contains sub.
*
* super contains sub if super and sub have the same
* language and either the same country or one
* is missing the country
*/
static FcBool
FcLangContains (const FcChar8 *super, const FcChar8 *sub)
{
FcChar8 c1, c2;
for (;;)
{
c1 = *super++;
c2 = *sub++;
c1 = FcToLower (c1);
c2 = FcToLower (c2);
if (c1 != c2)
{
/* see if super has a country while sub is mising one */
if (c1 == '-' && c2 == '\0')
return FcTrue;
/* see if sub has a country while super is mising one */
if (c1 == '\0' && c2 == '-')
return FcTrue;
return FcFalse;
}
else if (!c1)
return FcTrue;
}
}
const FcCharSet *
FcLangGetCharSet (const FcChar8 *lang)
{
int i;
int country = -1;
for (i = 0; i < NUM_LANG_CHAR_SET; i++)
{
switch (FcLangCompare (lang, fcLangCharSets[i].lang)) {
case FcLangEqual:
return &fcLangCharSets[i].charset;
case FcLangDifferentTerritory:
if (country == -1)
country = i;
case FcLangDifferentLang:
default:
break;
}
}
if (country == -1)
return 0;
return &fcLangCharSets[country].charset;
}
FcStrSet *
FcGetLangs (void)
{
FcStrSet *langs;
int i;
langs = FcStrSetCreate();
if (!langs)
return 0;
for (i = 0; i < NUM_LANG_CHAR_SET; i++)
FcStrSetAdd (langs, fcLangCharSets[i].lang);
return langs;
}
FcLangSet *
FcLangSetCreate (void)
{
FcLangSet *ls;
ls = malloc (sizeof (FcLangSet));
if (!ls)
return 0;
FcMemAlloc (FC_MEM_LANGSET, sizeof (FcLangSet));
memset (ls->map, '\0', sizeof (ls->map));
ls->map_size = NUM_LANG_SET_MAP;
ls->extra = 0;
return ls;
}
void
FcLangSetDestroy (FcLangSet *ls)
{
if (ls->extra)
FcStrSetDestroy (ls->extra);
FcMemFree (FC_MEM_LANGSET, sizeof (FcLangSet));
free (ls);
}
FcLangSet *
FcLangSetCopy (const FcLangSet *ls)
{
FcLangSet *new;
new = FcLangSetCreate ();
if (!new)
goto bail0;
memset (new->map, '\0', sizeof (new->map));
memcpy (new->map, ls->map, FC_MIN (sizeof (new->map), ls->map_size * sizeof (ls->map[0])));
if (ls->extra)
{
FcStrList *list;
FcChar8 *extra;
new->extra = FcStrSetCreate ();
if (!new->extra)
goto bail1;
list = FcStrListCreate (ls->extra);
if (!list)
goto bail1;
while ((extra = FcStrListNext (list)))
if (!FcStrSetAdd (new->extra, extra))
{
FcStrListDone (list);
goto bail1;
}
FcStrListDone (list);
}
return new;
bail1:
FcLangSetDestroy (new);
bail0:
return 0;
}
static int
FcLangSetIndex (const FcChar8 *lang)
{
int low, high, mid = 0;
int cmp = 0;
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FcChar8 firstChar = FcToLower(lang[0]);
FcChar8 secondChar = firstChar ? FcToLower(lang[1]) : '\0';
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if (firstChar < 'a')
{
low = 0;
high = fcLangCharSetRanges[0].begin;
}
else if(firstChar > 'z')
{
low = fcLangCharSetRanges[25].begin;
high = NUM_LANG_CHAR_SET - 1;
}
else
{
low = fcLangCharSetRanges[firstChar - 'a'].begin;
high = fcLangCharSetRanges[firstChar - 'a'].end;
/* no matches */
if (low > high)
return -low; /* next entry after where it would be */
}
while (low <= high)
{
mid = (high + low) >> 1;
if(fcLangCharSets[mid].lang[0] != firstChar)
cmp = FcStrCmpIgnoreCase(fcLangCharSets[mid].lang, lang);
else
{ /* fast path for resolving 2-letter languages (by far the most common) after
* finding the first char (probably already true because of the hash table) */
cmp = fcLangCharSets[mid].lang[1] - secondChar;
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if (cmp == 0 &&
(fcLangCharSets[mid].lang[2] != '\0' ||
lang[2] != '\0'))
{
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cmp = FcStrCmpIgnoreCase(fcLangCharSets[mid].lang+2,
lang+2);
}
}
if (cmp == 0)
return mid;
if (cmp < 0)
low = mid + 1;
else
high = mid - 1;
}
if (cmp < 0)
mid++;
return -(mid + 1);
}
FcBool
FcLangSetAdd (FcLangSet *ls, const FcChar8 *lang)
{
int id;
id = FcLangSetIndex (lang);
if (id >= 0)
{
FcLangSetBitSet (ls, id);
return FcTrue;
}
if (!ls->extra)
{
ls->extra = FcStrSetCreate ();
if (!ls->extra)
return FcFalse;
}
return FcStrSetAdd (ls->extra, lang);
}
FcBool
FcLangSetDel (FcLangSet *ls, const FcChar8 *lang)
{
int id;
id = FcLangSetIndex (lang);
if (id >= 0)
{
FcLangSetBitReset (ls, id);
}
else if (ls->extra)
{
FcStrSetDel (ls->extra, lang);
}
return FcTrue;
}
FcLangResult
FcLangSetHasLang (const FcLangSet *ls, const FcChar8 *lang)
{
int id;
FcLangResult best, r;
int i;
id = FcLangSetIndex (lang);
if (id < 0)
id = -id - 1;
else if (FcLangSetBitGet (ls, id))
return FcLangEqual;
best = FcLangDifferentLang;
for (i = id - 1; i >= 0; i--)
{
r = FcLangCompare (lang, fcLangCharSets[i].lang);
if (r == FcLangDifferentLang)
break;
if (FcLangSetBitGet (ls, i) && r < best)
best = r;
}
for (i = id; i < NUM_LANG_CHAR_SET; i++)
{
r = FcLangCompare (lang, fcLangCharSets[i].lang);
if (r == FcLangDifferentLang)
break;
if (FcLangSetBitGet (ls, i) && r < best)
best = r;
}
if (ls->extra)
{
FcStrList *list = FcStrListCreate (ls->extra);
FcChar8 *extra;
if (list)
{
while (best > FcLangEqual && (extra = FcStrListNext (list)))
{
r = FcLangCompare (lang, extra);
if (r < best)
best = r;
}
FcStrListDone (list);
}
}
return best;
}
static FcLangResult
FcLangSetCompareStrSet (const FcLangSet *ls, FcStrSet *set)
{
FcStrList *list = FcStrListCreate (set);
FcLangResult r, best = FcLangDifferentLang;
FcChar8 *extra;
if (list)
{
while (best > FcLangEqual && (extra = FcStrListNext (list)))
{
r = FcLangSetHasLang (ls, extra);
if (r < best)
best = r;
}
FcStrListDone (list);
}
return best;
}
FcLangResult
FcLangSetCompare (const FcLangSet *lsa, const FcLangSet *lsb)
{
int i, j, count;
FcLangResult best, r;
count = FC_MIN (lsa->map_size, lsb->map_size);
count = FC_MIN (NUM_LANG_SET_MAP, count);
for (i = 0; i < count; i++)
if (lsa->map[i] & lsb->map[i])
return FcLangEqual;
best = FcLangDifferentLang;
for (j = 0; j < NUM_COUNTRY_SET; j++)
for (i = 0; i < count; i++)
if ((lsa->map[i] & fcLangCountrySets[j][i]) &&
(lsb->map[i] & fcLangCountrySets[j][i]))
{
best = FcLangDifferentTerritory;
break;
}
if (lsa->extra)
{
r = FcLangSetCompareStrSet (lsb, lsa->extra);
if (r < best)
best = r;
}
if (best > FcLangEqual && lsb->extra)
{
r = FcLangSetCompareStrSet (lsa, lsb->extra);
if (r < best)
best = r;
}
return best;
}
/*
* Used in computing values -- mustn't allocate any storage
* XXX Not thread-safe
*/
FcLangSet *
FcLangSetPromote (const FcChar8 *lang)
{
static FcLangSet ls;
static FcStrSet strs;
static FcChar8 *str;
int id;
memset (ls.map, '\0', sizeof (ls.map));
ls.map_size = NUM_LANG_SET_MAP;
ls.extra = 0;
id = FcLangSetIndex (lang);
if (id > 0)
{
FcLangSetBitSet (&ls, id);
}
else
{
ls.extra = &strs;
strs.num = 1;
strs.size = 1;
strs.strs = &str;
strs.ref = 1;
str = (FcChar8 *) lang;
}
return &ls;
}
FcChar32
FcLangSetHash (const FcLangSet *ls)
{
FcChar32 h = 0;
int i, count;
count = FC_MIN (ls->map_size, NUM_LANG_SET_MAP);
for (i = 0; i < count; i++)
h ^= ls->map[i];
if (ls->extra)
h ^= ls->extra->num;
return h;
}
FcLangSet *
FcNameParseLangSet (const FcChar8 *string)
{
FcChar8 lang[32], c = 0;
int i;
FcLangSet *ls;
ls = FcLangSetCreate ();
if (!ls)
goto bail0;
for(;;)
{
for(i = 0; i < 31;i++)
{
c = *string++;
if(c == '\0' || c == '|')
break; /* end of this code */
lang[i] = c;
}
lang[i] = '\0';
if (!FcLangSetAdd (ls, lang))
goto bail1;
if(c == '\0')
break;
}
return ls;
bail1:
FcLangSetDestroy (ls);
bail0:
return 0;
}
FcBool
FcNameUnparseLangSet (FcStrBuf *buf, const FcLangSet *ls)
{
int i, bit, count;
FcChar32 bits;
FcBool first = FcTrue;
count = FC_MIN (ls->map_size, NUM_LANG_SET_MAP);
for (i = 0; i < count; i++)
{
if ((bits = ls->map[i]))
{
for (bit = 0; bit <= 31; bit++)
if (bits & (1 << bit))
{
int id = (i << 5) | bit;
if (!first)
if (!FcStrBufChar (buf, '|'))
return FcFalse;
if (!FcStrBufString (buf, fcLangCharSets[fcLangCharSetIndicesInv[id]].lang))
return FcFalse;
first = FcFalse;
}
}
}
if (ls->extra)
{
FcStrList *list = FcStrListCreate (ls->extra);
FcChar8 *extra;
if (!list)
return FcFalse;
while ((extra = FcStrListNext (list)))
{
if (!first)
if (!FcStrBufChar (buf, '|'))
{
FcStrListDone (list);
return FcFalse;
}
if (!FcStrBufString (buf, extra))
{
FcStrListDone (list);
return FcFalse;
}
first = FcFalse;
}
FcStrListDone (list);
}
return FcTrue;
}
FcBool
FcLangSetEqual (const FcLangSet *lsa, const FcLangSet *lsb)
{
int i, count;
count = FC_MIN (lsa->map_size, lsb->map_size);
count = FC_MIN (NUM_LANG_SET_MAP, count);
for (i = 0; i < count; i++)
{
if (lsa->map[i] != lsb->map[i])
return FcFalse;
}
if (!lsa->extra && !lsb->extra)
return FcTrue;
if (lsa->extra && lsb->extra)
return FcStrSetEqual (lsa->extra, lsb->extra);
return FcFalse;
}
static FcBool
FcLangSetContainsLang (const FcLangSet *ls, const FcChar8 *lang)
{
int id;
int i;
id = FcLangSetIndex (lang);
if (id < 0)
id = -id - 1;
else if (FcLangSetBitGet (ls, id))
return FcTrue;
/*
* search up and down among equal languages for a match
*/
for (i = id - 1; i >= 0; i--)
{
if (FcLangCompare (fcLangCharSets[i].lang, lang) == FcLangDifferentLang)
break;
if (FcLangSetBitGet (ls, i) &&
FcLangContains (fcLangCharSets[i].lang, lang))
return FcTrue;
}
for (i = id; i < NUM_LANG_CHAR_SET; i++)
{
if (FcLangCompare (fcLangCharSets[i].lang, lang) == FcLangDifferentLang)
break;
if (FcLangSetBitGet (ls, i) &&
FcLangContains (fcLangCharSets[i].lang, lang))
return FcTrue;
}
if (ls->extra)
{
FcStrList *list = FcStrListCreate (ls->extra);
FcChar8 *extra;
if (list)
{
while ((extra = FcStrListNext (list)))
{
if (FcLangContains (extra, lang))
break;
}
FcStrListDone (list);
if (extra)
return FcTrue;
}
}
return FcFalse;
}
/*
* return FcTrue if lsa contains every language in lsb
*/
FcBool
FcLangSetContains (const FcLangSet *lsa, const FcLangSet *lsb)
{
int i, j, count;
FcChar32 missing;
if (FcDebug() & FC_DBG_MATCHV)
{
printf ("FcLangSet "); FcLangSetPrint (lsa);
printf (" contains "); FcLangSetPrint (lsb);
printf ("\n");
}
/*
* check bitmaps for missing language support
*/
count = FC_MIN (lsa->map_size, lsb->map_size);
count = FC_MIN (NUM_LANG_SET_MAP, count);
for (i = 0; i < count; i++)
{
missing = lsb->map[i] & ~lsa->map[i];
if (missing)
{
for (j = 0; j < 32; j++)
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if (missing & (1 << j))
{
if (!FcLangSetContainsLang (lsa,
fcLangCharSets[fcLangCharSetIndicesInv[i*32 + j]].lang))
{
if (FcDebug() & FC_DBG_MATCHV)
printf ("\tMissing bitmap %s\n", fcLangCharSets[fcLangCharSetIndicesInv[i*32+j]].lang);
return FcFalse;
}
}
}
}
if (lsb->extra)
{
FcStrList *list = FcStrListCreate (lsb->extra);
FcChar8 *extra;
if (list)
{
while ((extra = FcStrListNext (list)))
{
if (!FcLangSetContainsLang (lsa, extra))
{
if (FcDebug() & FC_DBG_MATCHV)
printf ("\tMissing string %s\n", extra);
break;
}
}
FcStrListDone (list);
if (extra)
return FcFalse;
}
}
return FcTrue;
}
Add functionality to allow fontconfig data structure serialization. This patch allows the fundamental fontconfig data structures to be serialized. I've converted everything from FcPattern down to be able to use *Ptr objects, which can be either static or dynamic (using a union which either contains a pointer or an index) and replaced storage of pointers in the heap with the appropriate *Ptr object. I then changed all writes of pointers to the heap with a *CreateDynamic call, which creates a dynamic Ptr object pointing to the same object as before. This way, the fundamental fontconfig semantics should be unchanged; I did not have to change external signatures this way, although I did change some internal signatures. When given a *Ptr object, just run *U to get back to a normal pointer; it gives the right answer regardless of whether we're using static or dynamic storage. I've also implemented a Fc*Serialize call. Calling FcFontSetSerialize converts the dynamic FcFontSets contained in the config object to static FcFontSets and also converts its dependencies (e.g. everything you'd need to write to disk) to static objects. Note that you have to call Fc*PrepareSerialize first; this call will count the number of objects that actually needs to be allocated, so that we can avoid realloc. The Fc*Serialize calls then check the static pointers for nullness, and allocate the buffers if necessary. I've tested the execution of fc-list and fc-match after Fc*Serialize and they appear to work the same way.
2005-06-28 05:41:02 +02:00
FcBool
FcLangSetSerializeAlloc (FcSerialize *serialize, const FcLangSet *l)
Add functionality to allow fontconfig data structure serialization. This patch allows the fundamental fontconfig data structures to be serialized. I've converted everything from FcPattern down to be able to use *Ptr objects, which can be either static or dynamic (using a union which either contains a pointer or an index) and replaced storage of pointers in the heap with the appropriate *Ptr object. I then changed all writes of pointers to the heap with a *CreateDynamic call, which creates a dynamic Ptr object pointing to the same object as before. This way, the fundamental fontconfig semantics should be unchanged; I did not have to change external signatures this way, although I did change some internal signatures. When given a *Ptr object, just run *U to get back to a normal pointer; it gives the right answer regardless of whether we're using static or dynamic storage. I've also implemented a Fc*Serialize call. Calling FcFontSetSerialize converts the dynamic FcFontSets contained in the config object to static FcFontSets and also converts its dependencies (e.g. everything you'd need to write to disk) to static objects. Note that you have to call Fc*PrepareSerialize first; this call will count the number of objects that actually needs to be allocated, so that we can avoid realloc. The Fc*Serialize calls then check the static pointers for nullness, and allocate the buffers if necessary. I've tested the execution of fc-list and fc-match after Fc*Serialize and they appear to work the same way.
2005-06-28 05:41:02 +02:00
{
if (!FcSerializeAlloc (serialize, l, sizeof (FcLangSet)))
return FcFalse;
return FcTrue;
Add functionality to allow fontconfig data structure serialization. This patch allows the fundamental fontconfig data structures to be serialized. I've converted everything from FcPattern down to be able to use *Ptr objects, which can be either static or dynamic (using a union which either contains a pointer or an index) and replaced storage of pointers in the heap with the appropriate *Ptr object. I then changed all writes of pointers to the heap with a *CreateDynamic call, which creates a dynamic Ptr object pointing to the same object as before. This way, the fundamental fontconfig semantics should be unchanged; I did not have to change external signatures this way, although I did change some internal signatures. When given a *Ptr object, just run *U to get back to a normal pointer; it gives the right answer regardless of whether we're using static or dynamic storage. I've also implemented a Fc*Serialize call. Calling FcFontSetSerialize converts the dynamic FcFontSets contained in the config object to static FcFontSets and also converts its dependencies (e.g. everything you'd need to write to disk) to static objects. Note that you have to call Fc*PrepareSerialize first; this call will count the number of objects that actually needs to be allocated, so that we can avoid realloc. The Fc*Serialize calls then check the static pointers for nullness, and allocate the buffers if necessary. I've tested the execution of fc-list and fc-match after Fc*Serialize and they appear to work the same way.
2005-06-28 05:41:02 +02:00
}
FcLangSet *
FcLangSetSerialize(FcSerialize *serialize, const FcLangSet *l)
{
FcLangSet *l_serialize = FcSerializePtr (serialize, l);
if (!l_serialize)
return NULL;
memset (l_serialize->map, '\0', sizeof (l_serialize->map));
memcpy (l_serialize->map, l->map, FC_MIN (sizeof (l_serialize->map), l->map_size * sizeof (l->map[0])));
l_serialize->map_size = NUM_LANG_SET_MAP;
l_serialize->extra = NULL; /* We don't serialize ls->extra */
return l_serialize;
}
FcStrSet *
FcLangSetGetLangs (const FcLangSet *ls)
{
FcStrSet *langs;
int i;
langs = FcStrSetCreate();
if (!langs)
return 0;
for (i = 0; i < NUM_LANG_CHAR_SET; i++)
if (FcLangSetBitGet (ls, i))
FcStrSetAdd (langs, fcLangCharSets[i].lang);
if (ls->extra)
{
FcStrList *list = FcStrListCreate (ls->extra);
FcChar8 *extra;
if (list)
{
while ((extra = FcStrListNext (list)))
FcStrSetAdd (langs, extra);
FcStrListDone (list);
}
}
return langs;
}
static FcLangSet *
FcLangSetOperate(const FcLangSet *a,
const FcLangSet *b,
FcBool (*func) (FcLangSet *ls,
const FcChar8 *s))
{
FcLangSet *langset = FcLangSetCopy (a);
FcStrList *sl = FcStrListCreate (FcLangSetGetLangs (b));
FcChar8 *str;
while ((str = FcStrListNext (sl)))
{
func (langset, str);
}
FcStrListDone (sl);
return langset;
}
FcLangSet *
FcLangSetUnion (const FcLangSet *a, const FcLangSet *b)
{
return FcLangSetOperate(a, b, FcLangSetAdd);
}
FcLangSet *
FcLangSetSubtract (const FcLangSet *a, const FcLangSet *b)
{
return FcLangSetOperate(a, b, FcLangSetDel);
}
#define __fclang__
#include "fcaliastail.h"
#include "fcftaliastail.h"
#undef __fclang__