[fontconfig.git] / src / fclist.c

/*
 * $RCSId: xc/lib/fontconfig/src/fclist.c,v 1.11tsi Exp $
 *
 * Copyright © 2000 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 Keith Packard not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  Keith Packard makes no
 * representations about the suitability of this software for any purpose.  It
 * is provided "as is" without express or implied warranty.
 *
 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL KEITH PACKARD 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 <stdlib.h>
#include "fcint.h"

FcObjectSet *
FcObjectSetCreate (void)
{
    FcObjectSet    *os;

    os = (FcObjectSet *) malloc (sizeof (FcObjectSet));
    if (!os)
	return 0;
    FcMemAlloc (FC_MEM_OBJECTSET, sizeof (FcObjectSet));
    os->nobject = 0;
    os->sobject = 0;
    os->objects = 0;
    return os;
}

FcBool
FcObjectSetAdd (FcObjectSet *os, const char *object)
{
    int		s;
    const char	**objects;
    int		high, low, mid, c;
    
    if (os->nobject == os->sobject)
    {
	s = os->sobject + 4;
	if (os->objects)
	    objects = (const char **) realloc ((void *) os->objects,
					       s * sizeof (const char *));
	else
	    objects = (const char **) malloc (s * sizeof (const char *));
	if (!objects)
	    return FcFalse;
	if (os->sobject)
	    FcMemFree (FC_MEM_OBJECTPTR, os->sobject * sizeof (const char *));
	FcMemAlloc (FC_MEM_OBJECTPTR, s * sizeof (const char *));
	os->objects = objects;
	os->sobject = s;
    }
    high = os->nobject - 1;
    low = 0;
    mid = 0;
    c = 1;
    object = FcObjectStaticName (object);
    while (low <= high)
    {
	mid = (low + high) >> 1;
	c = os->objects[mid] - object;
	if (c == 0)
	    return FcTrue;
	if (c < 0)
	    low = mid + 1;
	else
	    high = mid - 1;
    }
    if (c < 0)
	mid++;
    memmove (os->objects + mid + 1, os->objects + mid, 
	     (os->nobject - mid) * sizeof (const char *));
    os->objects[mid] = object;
    os->nobject++;
    return FcTrue;
}

void
FcObjectSetDestroy (FcObjectSet *os)
{
    if (os->objects)
    {
	FcMemFree (FC_MEM_OBJECTPTR, os->sobject * sizeof (const char *));
	free ((void *) os->objects);
    }
    FcMemFree (FC_MEM_OBJECTSET, sizeof (FcObjectSet));
    free (os);
}

FcObjectSet *
FcObjectSetVaBuild (const char *first, va_list va)
{
    FcObjectSet    *ret;

    FcObjectSetVapBuild (ret, first, va);
    return ret;
}

FcObjectSet *
FcObjectSetBuild (const char *first, ...)
{
    va_list	    va;
    FcObjectSet    *os;

    va_start (va, first);
    FcObjectSetVapBuild (os, first, va);
    va_end (va);
    return os;
}

/*
 * Font must have a containing value for every value in the pattern
 */
static FcBool
FcListValueListMatchAny (FcValueList *patOrig,	    /* pattern */
			 FcValueList *fntOrig)	    /* font */
{
    FcValueList	    *pat, *fnt;

    for (pat = patOrig; pat; pat = pat->next)
    {
	for (fnt = fntOrig; fnt; fnt = fnt->next)
	{
	    /*
	     * make sure the font 'contains' the pattern.
	     * (OpListing is OpContains except for strings
	     *  where it requires an exact match)
	     */
	    if (FcConfigCompareValue (fnt->value,
				      FcOpListing, 
				      pat->value)) 
		break;
	}
	if (!fnt)
	    return FcFalse;
    }
    return FcTrue;
}

static FcBool
FcListValueListEqual (FcValueList   *v1orig,
		      FcValueList   *v2orig)
{
    FcValueList	    *v1, *v2;

    for (v1 = v1orig; v1; v1 = v1->next)
    {
	for (v2 = v2orig; v2; v2 = v2->next)
	    if (FcValueEqual (v1->value, v2->value))
		break;
	if (!v2)
	    return FcFalse;
    }
    for (v2 = v2orig; v2; v2 = v2->next)
    {
	for (v1 = v1orig; v1; v1 = v1->next)
	    if (FcValueEqual (v1->value, v2->value))
		break;
	if (!v1)
	    return FcFalse;
    }
    return FcTrue;
}

static FcBool
FcListPatternEqual (FcPattern	*p1,
		    FcPattern	*p2,
		    FcObjectSet	*os)
{
    int		    i;
    FcPatternElt    *e1, *e2;

    for (i = 0; i < os->nobject; i++)
    {
	e1 = FcPatternFindElt (p1, os->objects[i]);
	e2 = FcPatternFindElt (p2, os->objects[i]);
	if (!e1 && !e2)
	    continue;
	if (!e1 || !e2)
	    return FcFalse;
	if (!FcListValueListEqual (e1->values, e2->values))
	    return FcFalse;
    }
    return FcTrue;
}

/*
 * FcTrue iff all objects in "p" match "font"
 */

FcBool
FcListPatternMatchAny (const FcPattern *p,
		       const FcPattern *font)
{
    int		    i;
    FcPatternElt   *e;

    for (i = 0; i < p->num; i++)
    {
	e = FcPatternFindElt (font, p->elts[i].object);
	if (!e)
	    return FcFalse;
	if (!FcListValueListMatchAny (p->elts[i].values,    /* pat elts */
				      e->values))	    /* font elts */
	    return FcFalse;
    }
    return FcTrue;
}

static FcChar32
FcListMatrixHash (const FcMatrix *m)
{
    int	    xx = (int) (m->xx * 100), 
	    xy = (int) (m->xy * 100), 
	    yx = (int) (m->yx * 100),
	    yy = (int) (m->yy * 100);

    return ((FcChar32) xx) ^ ((FcChar32) xy) ^ ((FcChar32) yx) ^ ((FcChar32) yy);
}

static FcChar32
FcListValueHash (FcValue    v)
{
    switch (v.type) {
    case FcTypeVoid:
	return 0;
    case FcTypeInteger:
	return (FcChar32) v.u.i;
    case FcTypeDouble:
	return (FcChar32) (int) v.u.d;
    case FcTypeString:
	return FcStrHashIgnoreCase (v.u.s);
    case FcTypeBool:
	return (FcChar32) v.u.b;
    case FcTypeMatrix:
	return FcListMatrixHash (v.u.m);
    case FcTypeCharSet:
	return FcCharSetCount (v.u.c);
    case FcTypeFTFace:
	return (long) v.u.f;
    case FcTypeLangSet:
	return FcLangSetHash (v.u.l);
    }
    return 0;
}

static FcChar32
FcListValueListHash (FcValueList    *list)
{
    FcChar32	h = 0;
    
    while (list)
    {
	h = h ^ FcListValueHash (list->value);
	list = list->next;
    }
    return h;
}

static FcChar32
FcListPatternHash (FcPattern	*font,
		   FcObjectSet	*os)
{
    int		    n;
    FcPatternElt    *e;
    FcChar32	    h = 0;

    for (n = 0; n < os->nobject; n++)
    {
	e = FcPatternFindElt (font, os->objects[n]);
	if (e)
	    h = h ^ FcListValueListHash (e->values);
    }
    return h;
}

typedef struct _FcListBucket {
    struct _FcListBucket    *next;
    FcChar32		    hash;
    FcPattern		    *pattern;
} FcListBucket;

#define FC_LIST_HASH_SIZE   4099

typedef struct _FcListHashTable {
    int		    entries;
    FcListBucket    *buckets[FC_LIST_HASH_SIZE];
} FcListHashTable;
    
static void
FcListHashTableInit (FcListHashTable *table)
{
    table->entries = 0;
    memset (table->buckets, '\0', sizeof (table->buckets));
}

static void
FcListHashTableCleanup (FcListHashTable *table)
{
    int	i;
    FcListBucket    *bucket, *next;

    for (i = 0; i < FC_LIST_HASH_SIZE; i++)
    {
	for (bucket = table->buckets[i]; bucket; bucket = next)
	{
	    next = bucket->next;
	    FcPatternDestroy (bucket->pattern);
	    FcMemFree (FC_MEM_LISTBUCK, sizeof (FcListBucket));
	    free (bucket);
	}
	table->buckets[i] = 0;
    }
    table->entries = 0;
}

static FcBool
FcListAppend (FcListHashTable	*table,
	      FcPattern		*font,
	      FcObjectSet	*os)
{
    int		    o;
    FcPatternElt    *e;
    FcValueList	    *v;
    FcChar32	    hash;
    FcListBucket    **prev, *bucket;

    hash = FcListPatternHash (font, os);
    for (prev = &table->buckets[hash % FC_LIST_HASH_SIZE];
	 (bucket = *prev); prev = &(bucket->next))
    {
	if (bucket->hash == hash && 
	    FcListPatternEqual (bucket->pattern, font, os))
	    return FcTrue;
    }
    bucket = (FcListBucket *) malloc (sizeof (FcListBucket));
    if (!bucket)
	goto bail0;
    FcMemAlloc (FC_MEM_LISTBUCK, sizeof (FcListBucket));
    bucket->next = 0;
    bucket->hash = hash;
    bucket->pattern = FcPatternCreate ();
    if (!bucket->pattern)
	goto bail1;
    
    for (o = 0; o < os->nobject; o++)
    {
	e = FcPatternFindElt (font, os->objects[o]);
	if (e)
	{
	    for (v = e->values; v; v = v->next)
	    {
		if (!FcPatternAdd (bucket->pattern, 
				   os->objects[o], 
				   v->value, FcTrue))
		    goto bail2;
	    }
	}
    }
    *prev = bucket;
    ++table->entries;

    return FcTrue;
    
bail2:
    FcPatternDestroy (bucket->pattern);
bail1:
    FcMemFree (FC_MEM_LISTBUCK, sizeof (FcListBucket));
    free (bucket);
bail0:
    return FcFalse;
}

FcFontSet *
FcFontSetList (FcConfig	    *config,
	       FcFontSet    **sets,
	       int	    nsets,
	       FcPattern    *p,
	       FcObjectSet  *os)
{
    FcFontSet	    *ret;
    FcFontSet	    *s;
    int		    f;
    int		    set;
    FcListHashTable table;
    int		    i;
    FcListBucket    *bucket;

    if (!config)
    {
	if (!FcInitBringUptoDate ())
	    goto bail0;

	config = FcConfigGetCurrent ();
	if (!config)
	    goto bail0;
    }
    FcListHashTableInit (&table);
    /*
     * Walk all available fonts adding those that
     * match to the hash table
     */
    for (set = 0; set < nsets; set++)
    {
	s = sets[set];
	if (!s)
	    continue;
	for (f = 0; f < s->nfont; f++)
	    if (FcListPatternMatchAny (p,		/* pattern */
				       s->fonts[f]))	/* font */
		if (!FcListAppend (&table, s->fonts[f], os))
		    goto bail1;
    }
#if 0
    {
	int	max = 0;
	int	full = 0;
	int	ents = 0;
	int	len;
	for (i = 0; i < FC_LIST_HASH_SIZE; i++)
	{
	    if ((bucket = table.buckets[i]))
	    {
		len = 0;
		for (; bucket; bucket = bucket->next)
		{
		    ents++;
		    len++;
		}
		if (len > max)
		    max = len;
		full++;
	    }
	}
	printf ("used: %d max: %d avg: %g\n", full, max, 
		(double) ents / FC_LIST_HASH_SIZE);
    }
#endif
    /*
     * Walk the hash table and build
     * a font set
     */
    ret = FcFontSetCreate ();
    if (!ret)
	goto bail0;
    for (i = 0; i < FC_LIST_HASH_SIZE; i++)
	while ((bucket = table.buckets[i]))
	{
	    if (!FcFontSetAdd (ret, bucket->pattern))
		goto bail2;
	    table.buckets[i] = bucket->next;
	    FcMemFree (FC_MEM_LISTBUCK, sizeof (FcListBucket));
	    free (bucket);
	}
    
    return ret;

bail2:
    FcFontSetDestroy (ret);
bail1:
    FcListHashTableCleanup (&table);
bail0:
    return 0;
}

FcFontSet *
FcFontList (FcConfig	*config,
	    FcPattern	*p,
	    FcObjectSet *os)
{
    FcFontSet	*sets[2];
    int		nsets;

    if (!config)
    {
	config = FcConfigGetCurrent ();
	if (!config)
	    return 0;
    }
    nsets = 0;
    if (config->fonts[FcSetSystem])
	sets[nsets++] = config->fonts[FcSetSystem];
    if (config->fonts[FcSetApplication])
	sets[nsets++] = config->fonts[FcSetApplication];
    return FcFontSetList (config, sets, nsets, p, os);
}
Commit	Line	Data
24330d27	1	/*
793e946c	2	* $RCSId: xc/lib/fontconfig/src/fclist.c,v 1.11tsi Exp $
24330d27	3	*
46b51147	4	* Copyright © 2000 Keith Packard
24330d27 KP	5	*
	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.
	15	*
	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.
	23	*/
	24
	25	#include <stdlib.h>
	26	#include "fcint.h"
	27
	28	FcObjectSet *
	29	FcObjectSetCreate (void)
	30	{
	31	FcObjectSet *os;
	32
	33	os = (FcObjectSet *) malloc (sizeof (FcObjectSet));
	34	if (!os)
	35	return 0;
	36	FcMemAlloc (FC_MEM_OBJECTSET, sizeof (FcObjectSet));
	37	os->nobject = 0;
	38	os->sobject = 0;
	39	os->objects = 0;
	40	return os;
	41	}
	42
	43	FcBool
	44	FcObjectSetAdd (FcObjectSet os, const char object)
	45	{
	46	int s;
	47	const char **objects;
e9be9cd1	48	int high, low, mid, c;
24330d27 KP	49
	50	if (os->nobject == os->sobject)
	51	{
	52	s = os->sobject + 4;
	53	if (os->objects)
	54	objects = (const char *) realloc ((void ) os->objects,
	55	s * sizeof (const char *));
	56	else
	57	objects = (const char *) malloc (s sizeof (const char *));
	58	if (!objects)
	59	return FcFalse;
	60	if (os->sobject)
	61	FcMemFree (FC_MEM_OBJECTPTR, os->sobject * sizeof (const char *));
	62	FcMemAlloc (FC_MEM_OBJECTPTR, s * sizeof (const char *));
	63	os->objects = objects;
	64	os->sobject = s;
	65	}
e9be9cd1 KP	66	high = os->nobject - 1;
	67	low = 0;
	68	mid = 0;
	69	c = 1;
ae7d0f35	70	object = FcObjectStaticName (object);
e9be9cd1 KP	71	while (low <= high)
	72	{
	73	mid = (low + high) >> 1;
ae7d0f35	74	c = os->objects[mid] - object;
e9be9cd1 KP	75	if (c == 0)
	76	return FcTrue;
	77	if (c < 0)
	78	low = mid + 1;
	79	else
	80	high = mid - 1;
	81	}
	82	if (c < 0)
	83	mid++;
5b1bfa5d KP	84	memmove (os->objects + mid + 1, os->objects + mid,
5b1bfa5d KP	85	(os->nobject - mid) * sizeof (const char *));
ae7d0f35	86	os->objects[mid] = object;
e9be9cd1	87	os->nobject++;
24330d27 KP	88	return FcTrue;
	89	}
	90
	91	void
	92	FcObjectSetDestroy (FcObjectSet *os)
	93	{
	94	if (os->objects)
	95	{
	96	FcMemFree (FC_MEM_OBJECTPTR, os->sobject * sizeof (const char *));
	97	free ((void *) os->objects);
	98	}
	99	FcMemFree (FC_MEM_OBJECTSET, sizeof (FcObjectSet));
	100	free (os);
	101	}
	102
	103	FcObjectSet *
	104	FcObjectSetVaBuild (const char *first, va_list va)
	105	{
	106	FcObjectSet *ret;
	107
	108	FcObjectSetVapBuild (ret, first, va);
	109	return ret;
	110	}
	111
	112	FcObjectSet *
	113	FcObjectSetBuild (const char *first, ...)
	114	{
	115	va_list va;
	116	FcObjectSet *os;
	117
	118	va_start (va, first);
	119	FcObjectSetVapBuild (os, first, va);
	120	va_end (va);
	121	return os;
	122	}
	123
74a623e0 KP	124	/*
	125	* Font must have a containing value for every value in the pattern
	126	*/
24330d27	127	static FcBool
74a623e0 KP	128	FcListValueListMatchAny (FcValueList patOrig, / pattern */
74a623e0 KP	129	FcValueList fntOrig) / font */
24330d27	130	{
74a623e0	131	FcValueList pat, fnt;
24330d27	132
74a623e0 KP	133	for (pat = patOrig; pat; pat = pat->next)
	134	{
	135	for (fnt = fntOrig; fnt; fnt = fnt->next)
	136	{
	137	/*
	138	* make sure the font 'contains' the pattern.
	139	* (OpListing is OpContains except for strings
	140	* where it requires an exact match)
	141	*/
	142	if (FcConfigCompareValue (fnt->value,
	143	FcOpListing,
	144	pat->value))
	145	break;
	146	}
	147	if (!fnt)
	148	return FcFalse;
	149	}
	150	return FcTrue;
24330d27 KP	151	}
	152
	153	static FcBool
	154	FcListValueListEqual (FcValueList *v1orig,
	155	FcValueList *v2orig)
	156	{
	157	FcValueList v1, v2;
	158
	159	for (v1 = v1orig; v1; v1 = v1->next)
	160	{
	161	for (v2 = v2orig; v2; v2 = v2->next)
47d4f950	162	if (FcValueEqual (v1->value, v2->value))
24330d27 KP	163	break;
	164	if (!v2)
	165	return FcFalse;
	166	}
	167	for (v2 = v2orig; v2; v2 = v2->next)
	168	{
	169	for (v1 = v1orig; v1; v1 = v1->next)
47d4f950	170	if (FcValueEqual (v1->value, v2->value))
24330d27 KP	171	break;
	172	if (!v1)
	173	return FcFalse;
	174	}
	175	return FcTrue;
	176	}
	177
24330d27	178	static FcBool
e9be9cd1 KP	179	FcListPatternEqual (FcPattern *p1,
	180	FcPattern *p2,
	181	FcObjectSet *os)
24330d27 KP	182	{
24330d27 KP	183	int i;
e9be9cd1	184	FcPatternElt e1, e2;
24330d27	185
e9be9cd1	186	for (i = 0; i < os->nobject; i++)
24330d27	187	{
e9be9cd1 KP	188	e1 = FcPatternFindElt (p1, os->objects[i]);
	189	e2 = FcPatternFindElt (p2, os->objects[i]);
	190	if (!e1 && !e2)
47d4f950	191	continue;
e9be9cd1	192	if (!e1 \|\| !e2)
24330d27	193	return FcFalse;
e9be9cd1	194	if (!FcListValueListEqual (e1->values, e2->values))
24330d27 KP	195	return FcFalse;
	196	}
	197	return FcTrue;
	198	}
	199
e9be9cd1 KP	200	/*
	201	* FcTrue iff all objects in "p" match "font"
	202	*/
	203
4f27c1c0 KP	204	FcBool
	205	FcListPatternMatchAny (const FcPattern *p,
	206	const FcPattern *font)
24330d27 KP	207	{
24330d27 KP	208	int i;
e9be9cd1	209	FcPatternElt *e;
24330d27	210
e9be9cd1	211	for (i = 0; i < p->num; i++)
24330d27	212	{
e9be9cd1 KP	213	e = FcPatternFindElt (font, p->elts[i].object);
e9be9cd1 KP	214	if (!e)
24330d27	215	return FcFalse;
74a623e0 KP	216	if (!FcListValueListMatchAny (p->elts[i].values, /* pat elts */
74a623e0 KP	217	e->values)) /* font elts */
24330d27 KP	218	return FcFalse;
	219	}
	220	return FcTrue;
	221	}
	222
24330d27 KP	223	static FcChar32
	224	FcListMatrixHash (const FcMatrix *m)
	225	{
	226	int xx = (int) (m->xx * 100),
	227	xy = (int) (m->xy * 100),
	228	yx = (int) (m->yx * 100),
	229	yy = (int) (m->yy * 100);
	230
	231	return ((FcChar32) xx) ^ ((FcChar32) xy) ^ ((FcChar32) yx) ^ ((FcChar32) yy);
	232	}
	233
	234	static FcChar32
	235	FcListValueHash (FcValue v)
	236	{
	237	switch (v.type) {
	238	case FcTypeVoid:
	239	return 0;
	240	case FcTypeInteger:
	241	return (FcChar32) v.u.i;
	242	case FcTypeDouble:
	243	return (FcChar32) (int) v.u.d;
	244	case FcTypeString:
192296d8	245	return FcStrHashIgnoreCase (v.u.s);
24330d27 KP	246	case FcTypeBool:
	247	return (FcChar32) v.u.b;
	248	case FcTypeMatrix:
	249	return FcListMatrixHash (v.u.m);
	250	case FcTypeCharSet:
	251	return FcCharSetCount (v.u.c);
88c747e2	252	case FcTypeFTFace:
d1bec8c6	253	return (long) v.u.f;
d8d73958 KP	254	case FcTypeLangSet:
d8d73958 KP	255	return FcLangSetHash (v.u.l);
24330d27 KP	256	}
	257	return 0;
	258	}
	259
	260	static FcChar32
	261	FcListValueListHash (FcValueList *list)
	262	{
	263	FcChar32 h = 0;
	264
	265	while (list)
	266	{
	267	h = h ^ FcListValueHash (list->value);
	268	list = list->next;
	269	}
	270	return h;
	271	}
	272
	273	static FcChar32
	274	FcListPatternHash (FcPattern *font,
	275	FcObjectSet *os)
	276	{
	277	int n;
	278	FcPatternElt *e;
	279	FcChar32 h = 0;
	280
	281	for (n = 0; n < os->nobject; n++)
	282	{
e9be9cd1	283	e = FcPatternFindElt (font, os->objects[n]);
24330d27 KP	284	if (e)
	285	h = h ^ FcListValueListHash (e->values);
	286	}
	287	return h;
	288	}
	289
	290	typedef struct _FcListBucket {
	291	struct _FcListBucket *next;
	292	FcChar32 hash;
	293	FcPattern *pattern;
	294	} FcListBucket;
	295
	296	#define FC_LIST_HASH_SIZE 4099
	297
	298	typedef struct _FcListHashTable {
	299	int entries;
	300	FcListBucket *buckets[FC_LIST_HASH_SIZE];
	301	} FcListHashTable;
	302
	303	static void
	304	FcListHashTableInit (FcListHashTable *table)
	305	{
	306	table->entries = 0;
	307	memset (table->buckets, '\0', sizeof (table->buckets));
	308	}
	309
	310	static void
	311	FcListHashTableCleanup (FcListHashTable *table)
	312	{
	313	int i;
	314	FcListBucket bucket, next;
	315
	316	for (i = 0; i < FC_LIST_HASH_SIZE; i++)
	317	{
	318	for (bucket = table->buckets[i]; bucket; bucket = next)
	319	{
	320	next = bucket->next;
	321	FcPatternDestroy (bucket->pattern);
	322	FcMemFree (FC_MEM_LISTBUCK, sizeof (FcListBucket));
	323	free (bucket);
	324	}
	325	table->buckets[i] = 0;
	326	}
	327	table->entries = 0;
	328	}
	329
	330	static FcBool
	331	FcListAppend (FcListHashTable *table,
	332	FcPattern *font,
	333	FcObjectSet *os)
	334	{
	335	int o;
	336	FcPatternElt *e;
	337	FcValueList *v;
	338	FcChar32 hash;
	339	FcListBucket *prev, bucket;
	340
	341	hash = FcListPatternHash (font, os);
	342	for (prev = &table->buckets[hash % FC_LIST_HASH_SIZE];
	343	(bucket = *prev); prev = &(bucket->next))
	344	{
	345	if (bucket->hash == hash &&
	346	FcListPatternEqual (bucket->pattern, font, os))
	347	return FcTrue;
348	}
349	bucket = (FcListBucket *) malloc (sizeof (FcListBucket));
350	if (!bucket)
351	goto bail0;
352	FcMemAlloc (FC_MEM_LISTBUCK, sizeof (FcListBucket));
353	bucket->next = 0;
354	bucket->hash = hash;
355	bucket->pattern = FcPatternCreate ();
356	if (!bucket->pattern)
357	goto bail1;
358
359	for (o = 0; o < os->nobject; o++)
360	{
e9be9cd1	361	e = FcPatternFindElt (font, os->objects[o]);
24330d27 KP	362	if (e)
	363	{
	364	for (v = e->values; v; v = v->next)
	365	{
	366	if (!FcPatternAdd (bucket->pattern,
	367	os->objects[o],
	368	v->value, FcTrue))
	369	goto bail2;
	370	}
	371	}
	372	}
	373	*prev = bucket;
	374	++table->entries;
	375
	376	return FcTrue;
	377
	378	bail2:
	379	FcPatternDestroy (bucket->pattern);
	380	bail1:
	381	FcMemFree (FC_MEM_LISTBUCK, sizeof (FcListBucket));
	382	free (bucket);
	383	bail0:
	384	return FcFalse;
	385	}
	386
	387	FcFontSet *
80c053b7 KP	388	FcFontSetList (FcConfig *config,
	389	FcFontSet **sets,
	390	int nsets,
	391	FcPattern *p,
	392	FcObjectSet *os)
24330d27 KP	393	{
	394	FcFontSet *ret;
	395	FcFontSet *s;
	396	int f;
80c053b7	397	int set;
24330d27 KP	398	FcListHashTable table;
	399	int i;
	400	FcListBucket *bucket;
	401
	402	if (!config)
	403	{
179c3995 KP	404	if (!FcInitBringUptoDate ())
	405	goto bail0;
	406
24330d27 KP	407	config = FcConfigGetCurrent ();
	408	if (!config)
	409	goto bail0;
	410	}
	411	FcListHashTableInit (&table);
	412	/*
	413	* Walk all available fonts adding those that
	414	* match to the hash table
	415	*/
80c053b7	416	for (set = 0; set < nsets; set++)
24330d27	417	{
80c053b7	418	s = sets[set];
24330d27 KP	419	if (!s)
	420	continue;
	421	for (f = 0; f < s->nfont; f++)
74a623e0 KP	422	if (FcListPatternMatchAny (p, /* pattern */
74a623e0 KP	423	s->fonts[f])) /* font */
24330d27 KP	424	if (!FcListAppend (&table, s->fonts[f], os))
	425	goto bail1;
	426	}
	427	#if 0
	428	{
	429	int max = 0;
	430	int full = 0;
	431	int ents = 0;
	432	int len;
	433	for (i = 0; i < FC_LIST_HASH_SIZE; i++)
	434	{
	435	if ((bucket = table.buckets[i]))
	436	{
	437	len = 0;
	438	for (; bucket; bucket = bucket->next)
	439	{
	440	ents++;
	441	len++;
	442	}
	443	if (len > max)
	444	max = len;
	445	full++;
	446	}
	447	}
	448	printf ("used: %d max: %d avg: %g\n", full, max,
	449	(double) ents / FC_LIST_HASH_SIZE);
	450	}
	451	#endif
	452	/*
	453	* Walk the hash table and build
	454	* a font set
	455	*/
	456	ret = FcFontSetCreate ();
	457	if (!ret)
	458	goto bail0;
	459	for (i = 0; i < FC_LIST_HASH_SIZE; i++)
	460	while ((bucket = table.buckets[i]))
	461	{
	462	if (!FcFontSetAdd (ret, bucket->pattern))
	463	goto bail2;
	464	table.buckets[i] = bucket->next;
	465	FcMemFree (FC_MEM_LISTBUCK, sizeof (FcListBucket));
	466	free (bucket);
	467	}
	468
	469	return ret;
	470
	471	bail2:
	472	FcFontSetDestroy (ret);
	473	bail1:
	474	FcListHashTableCleanup (&table);
	475	bail0:
	476	return 0;
	477	}
80c053b7 KP	478
	479	FcFontSet *
	480	FcFontList (FcConfig *config,
	481	FcPattern *p,
	482	FcObjectSet *os)
	483	{
	484	FcFontSet *sets[2];
	485	int nsets;
	486
	487	if (!config)
	488	{
	489	config = FcConfigGetCurrent ();
	490	if (!config)
	491	return 0;
	492	}
	493	nsets = 0;
	494	if (config->fonts[FcSetSystem])
	495	sets[nsets++] = config->fonts[FcSetSystem];
	496	if (config->fonts[FcSetApplication])
	497	sets[nsets++] = config->fonts[FcSetApplication];
	498	return FcFontSetList (config, sets, nsets, p, os);
	499	}