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/*
* fontconfig/src/fcscript.c
*
* 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"
/* Objects MT-safe for readonly access. */
typedef struct {
const FcChar8 script[8];
const FcCharSet charset;
} FcScriptCharSet;
#include "../fc-script/fcscript.h"
struct _FcScriptSet {
FcChar32 map_size;
FcChar32 map[NUM_SCRIPT_SET_MAP];
};
static void
FcScriptSetBitSet (FcScriptSet *ss,
unsigned int id)
{
unsigned int bucket;
id = fcScriptCharSetIndices[id];
bucket = id >> 5;
if (bucket >= ss->map_size)
return; /* shouldn't happen really */
ss->map[bucket] |= ((FcChar32) 1 << (id & 0x1f));
}
static FcBool
FcScriptSetBitGet (const FcScriptSet *ss,
unsigned int id)
{
unsigned int bucket;
id = fcScriptCharSetIndices[id];
bucket = id >> 5;
if (bucket >= ss->map_size)
return FcFalse;
return ((ss->map[bucket] >> (id & 0x1f)) & 1) ? FcTrue : FcFalse;
}
static void
FcScriptSetBitReset (FcScriptSet *ss,
unsigned int id)
{
unsigned int bucket;
id = fcScriptCharSetIndices[id];
bucket = id >> 5;
if (bucket >= ss->map_size)
return; /* shouldn't happen really */
ss->map[bucket] &= ~((FcChar32) 1 << (id & 0x1f));
}
FcScriptSet *
FcFreeTypeScriptSet (const FcCharSet *charset)
{
static const int threshold = 60;
int i, j, avail;
FcChar32 missing, count;
FcScriptSet *ss;
ss = FcScriptSetCreate ();
if (!ss)
return 0;
if (FcDebug() & FC_DBG_SCRIPTSET)
{
printf ("font scriptset");
FcCharSetPrint (charset);
printf ("\n");
}
for (i = 0; i < NUM_SCRIPT_CHAR_SET; i++)
{
if (FcDebug() & FC_DBG_SCRIPTSET)
{
printf ("%s charset", fcScriptCharSets[i].script);
FcCharSetPrint (&fcScriptCharSets[i].charset);
printf ("\n");
}
#if 0
/*
* Check for Han charsets to make fonts
* which advertise support for a single language
* not support other Han languages
*/
if (exclusiveCharset &&
FcFreeTypeIsExclusiveLang (fcLangCharSets[i].lang))
{
if (fcLangCharSets[i].charset.num != exclusiveCharset->num)
continue;
for (j = 0; j < fcLangCharSets[i].charset.num; j++)
if (FcCharSetLeaf(&fcLangCharSets[i].charset, j) !=
FcCharSetLeaf(exclusiveCharset, j))
continue;
}
#endif
count = FcCharSetCount (&fcScriptCharSets[i].charset);
missing = FcCharSetSubtractCount (&fcScriptCharSets[i].charset, charset);
avail = (count - missing) * 100 / count;
if (FcDebug() & FC_DBG_SCANV)
{
if (avail < threshold && missing < 10)
{
FcCharSet *missed = FcCharSetSubtract (&fcScriptCharSets[i].charset,
charset);
FcChar32 ucs4;
FcChar32 map[FC_CHARSET_MAP_SIZE];
FcChar32 next;
printf ("\n%s(%u) ", fcScriptCharSets[i].script, 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) ", fcScriptCharSets[i].script, missing);
}
if (avail >= threshold)
FcScriptSetBitSet (ss, i);
}
if (FcDebug() & FC_DBG_SCANV)
printf ("\n");
printf ("scriptset:\n");
FcScriptSetPrint (ss);
printf ("\n");
return ss;
}
const FcCharSet *
FcScriptGetCharSet (const FcChar8 *script)
{
int i;
for (i = 0; i < NUM_SCRIPT_CHAR_SET; i++)
{
if (FcStrCmpIgnoreCase (script, fcScriptCharSets[i].script) == 0)
{
volatile FcCharSet *cs = &fcScriptCharSets[i].charset;
printf("%p\n", cs);
// __asm__ volatile("int $03");
return cs;
// return &fcScriptCharSets[i].charset;
}
}
return NULL;
}
FcScriptSet *
FcScriptSetCreate (void)
{
FcScriptSet *ss;
ss = malloc (sizeof (FcScriptSet));
if (!ss)
return NULL;
memset (ss->map, '\0', sizeof (ss->map));
ss->map_size = NUM_SCRIPT_SET_MAP;
return ss;
}
void
FcScriptSetDestroy (FcScriptSet *ss)
{
free (ss);
}
FcBool
FcNameUnparseScriptSet (FcStrBuf *buf, const FcScriptSet *ss)
{
int i, bit, count;
FcChar32 bits;
FcBool first = FcTrue;
count = FC_MIN (ss->map_size, NUM_SCRIPT_SET_MAP);
for (i = 0; i < count; i++)
{
if ((bits = ss->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, fcScriptCharSets[fcScriptCharSetIndicesInv[id]].script))
return FcFalse;
first = FcFalse;
}
}
}
return FcTrue;
}
#define __fcscript__
#include "fcaliastail.h"
#include "fcftaliastail.h"
#undef __fcscript__
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