src/fcpat.c

   1 /*
   2  * $XFree86: xc/lib/fontconfig/src/fcpat.c,v 1.13 2002/08/11 18:10:42 keithp Exp $
   3  *
   4  * Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc.
   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 <string.h>
  27 #include <assert.h>
  28 #include "fcint.h"
  29
  30 FcPattern *
  31 FcPatternCreate (void)
  32 {
  33     FcPattern   *p;
  34
  35     p = (FcPattern *) malloc (sizeof (FcPattern));
  36     if (!p)
  37         return 0;
  38     FcMemAlloc (FC_MEM_PATTERN, sizeof (FcPattern));
  39     p->num = 0;
  40     p->size = 0;
  41     p->elts = 0;
  42     p->ref = 1;
  43     return p;
  44 }
  45
  46 void
  47 FcValueDestroy (FcValue v)
  48 {
  49     switch (v.type) {
  50     case FcTypeString:
  51         FcStrFree ((FcChar8 *) v.u.s);
  52         break;
  53     case FcTypeMatrix:
  54         FcMatrixFree ((FcMatrix *) v.u.m);
  55         break;
  56     case FcTypeCharSet:
  57         FcCharSetDestroy ((FcCharSet *) v.u.c);
  58         break;
  59     case FcTypeLangSet:
  60         FcLangSetDestroy ((FcLangSet *) v.u.l);
  61         break;
  62     default:
  63         break;
  64     }
  65 }
  66
  67 FcValue
  68 FcValueSave (FcValue v)
  69 {
  70     switch (v.type) {
  71     case FcTypeString:
  72         v.u.s = FcStrCopy (v.u.s);
  73         if (!v.u.s)
  74             v.type = FcTypeVoid;
  75         break;
  76     case FcTypeMatrix:
  77         v.u.m = FcMatrixCopy (v.u.m);
  78         if (!v.u.m)
  79             v.type = FcTypeVoid;
  80         break;
  81     case FcTypeCharSet:
  82         v.u.c = FcCharSetCopy ((FcCharSet *) v.u.c);
  83         if (!v.u.c)
  84             v.type = FcTypeVoid;
  85         break;
  86     case FcTypeLangSet:
  87         v.u.l = FcLangSetCopy (v.u.l);
  88         if (!v.u.l)
  89             v.type = FcTypeVoid;
  90         break;
  91     default:
  92         break;
  93     }
  94     return v;
  95 }
  96
  97 void
  98 FcValueListDestroy (FcValueList *l)
  99 {
 100     FcValueList    *next;
 101     for (; l; l = next)
 102     {
 103         switch (l->value.type) {
 104         case FcTypeString:
 105             FcStrFree ((FcChar8 *) l->value.u.s);
 106             break;
 107         case FcTypeMatrix:
 108             FcMatrixFree ((FcMatrix *) l->value.u.m);
 109             break;
 110         case FcTypeCharSet:
 111             FcCharSetDestroy ((FcCharSet *) l->value.u.c);
 112             break;
 113         case FcTypeLangSet:
 114             FcLangSetDestroy ((FcLangSet *) l->value.u.l);
 115             break;
 116         default:
 117             break;
 118         }
 119         next = l->next;
 120         FcMemFree (FC_MEM_VALLIST, sizeof (FcValueList));
 121         free (l);
 122     }
 123 }
 124
 125 FcBool
 126 FcValueEqual (FcValue va, FcValue vb)
 127 {
 128     if (va.type != vb.type)
 129     {
 130         if (va.type == FcTypeInteger)
 131         {
 132             va.type = FcTypeDouble;
 133             va.u.d = va.u.i;
 134         }
 135         if (vb.type == FcTypeInteger)
 136         {
 137             vb.type = FcTypeDouble;
 138             vb.u.d = vb.u.i;
 139         }
 140         if (va.type != vb.type)
 141             return FcFalse;
 142     }
 143     switch (va.type) {
 144     case FcTypeVoid:
 145         return FcTrue;
 146     case FcTypeInteger:
 147         return va.u.i == vb.u.i;
 148     case FcTypeDouble:
 149         return va.u.d == vb.u.d;
 150     case FcTypeString:
 151         return FcStrCmpIgnoreCase (va.u.s, vb.u.s) == 0;
 152     case FcTypeBool:
 153         return va.u.b == vb.u.b;
 154     case FcTypeMatrix:
 155         return FcMatrixEqual (va.u.m, vb.u.m);
 156     case FcTypeCharSet:
 157         return FcCharSetEqual (va.u.c, vb.u.c);
 158     case FcTypeFTFace:
 159         return va.u.f == vb.u.f;
 160     case FcTypeLangSet:
 161         return FcLangSetEqual (va.u.l, vb.u.l);
 162     }
 163     return FcFalse;
 164 }
 165
 166 static FcChar32
 167 FcDoubleHash (double d)
 168 {
 169     if (d < 0)
 170         d = -d;
 171     if (d > 0xffffffff)
 172         d = 0xffffffff;
 173     return (FcChar32) d;
 174 }
 175
 176 static FcChar32
 177 FcStringHash (const FcChar8 *s)
 178 {
 179     FcChar8     c;
 180     FcChar32    h = 0;
 181
 182     if (s)
 183         while ((c = *s++))
 184             h = ((h << 1) | (h >> 31)) ^ c;
 185     return h;
 186 }
 187
 188 static FcChar32
 189 FcValueHash (FcValue v)
 190 {
 191     switch (v.type) {
 192     case FcTypeVoid:
 193         return 0;
 194     case FcTypeInteger:
 195         return (FcChar32) v.u.i;
 196     case FcTypeDouble:
 197         return FcDoubleHash (v.u.d);
 198     case FcTypeString:
 199         return FcStringHash (v.u.s);
 200     case FcTypeBool:
 201         return (FcChar32) v.u.b;
 202     case FcTypeMatrix:
 203         return (FcDoubleHash (v.u.m->xx) ^
 204                 FcDoubleHash (v.u.m->xy) ^
 205                 FcDoubleHash (v.u.m->yx) ^
 206                 FcDoubleHash (v.u.m->yy));
 207     case FcTypeCharSet:
 208         return (FcChar32) v.u.c->num;
 209     case FcTypeFTFace:
 210         return FcStringHash ((const FcChar8 *) ((FT_Face) v.u.f)->family_name) ^
 211                FcStringHash ((const FcChar8 *) ((FT_Face) v.u.f)->style_name);
 212     case FcTypeLangSet:
 213         return FcLangSetHash (v.u.l);
 214     }
 215     return FcFalse;
 216 }
 217
 218 static FcBool
 219 FcValueListEqual (FcValueList *la, FcValueList *lb)
 220 {
 221     if (la == lb)
 222         return FcTrue;
 223
 224     while (la && lb)
 225     {
 226         if (!FcValueEqual (la->value, lb->value))
 227             return FcFalse;
 228         la = la->next;
 229         lb = lb->next;
 230     }
 231     if (la || lb)
 232         return FcFalse;
 233     return FcTrue;
 234 }
 235
 236 static FcChar32
 237 FcValueListHash (FcValueList *l)
 238 {
 239     FcChar32    hash = 0;
 240
 241     while (l)
 242     {
 243         hash = ((hash << 1) | (hash >> 31)) ^ FcValueHash (l->value);
 244         l = l->next;
 245     }
 246     return hash;
 247 }
 248
 249 void
 250 FcPatternDestroy (FcPattern *p)
 251 {
 252     int             i;
 253
 254     if (p->ref == FC_REF_CONSTANT || --p->ref > 0)
 255         return;
 256
 257     for (i = 0; i < p->num; i++)
 258         FcValueListDestroy (p->elts[i].values);
 259
 260     p->num = 0;
 261     if (p->elts)
 262     {
 263         FcMemFree (FC_MEM_PATELT, p->size * sizeof (FcPatternElt));
 264         free (p->elts);
 265         p->elts = 0;
 266     }
 267     p->size = 0;
 268     FcMemFree (FC_MEM_PATTERN, sizeof (FcPattern));
 269     free (p);
 270 }
 271
 272 #define FC_VALUE_LIST_HASH_SIZE     257
 273 #define FC_PATTERN_HASH_SIZE        67
 274
 275 typedef struct _FcValueListEnt FcValueListEnt;
 276
 277 struct _FcValueListEnt {
 278     FcValueListEnt  *next;
 279     FcChar32        hash;
 280     FcValueList     *list;
 281 };
 282
 283 static int          FcValueListFrozenCount[FcTypeLangSet + 1];
 284 static int          FcValueListFrozenBytes[FcTypeLangSet + 1];
 285 static char         *FcValueListFrozenName[] = {
 286     "Void",
 287     "Integer",
 288     "Double",
 289     "String",
 290     "Bool",
 291     "Matrix",
 292     "CharSet",
 293     "FTFace",
 294     "LangSet"
 295 };
 296
 297 void
 298 FcValueListReport (void);
 299
 300 void
 301 FcValueListReport (void)
 302 {
 303     FcType  t;
 304
 305     printf ("Fc Frozen Values:\n");
 306     printf ("\t%8s %9s %9s\n", "Type", "Count", "Bytes");
 307     for (t = FcTypeVoid; t <= FcTypeLangSet; t++)
 308         printf ("\t%8s %9d %9d\n", FcValueListFrozenName[t],
 309                 FcValueListFrozenCount[t], FcValueListFrozenBytes[t]);
 310 }
 311
 312 static FcValueListEnt *
 313 FcValueListEntCreate (FcValueList *h)
 314 {
 315     FcValueListEnt  *e;
 316     FcValueList     *l, *new;
 317     int             n;
 318     int             string_size = 0;
 319     FcChar8         *strs;
 320     int             size;
 321
 322     n = 0;
 323     for (l = h; l; l = l->next)
 324     {
 325         if (l->value.type == FcTypeString)
 326             string_size += strlen ((char *) l->value.u.s) + 1;
 327         n++;
 328     }
 329     size = sizeof (FcValueListEnt) + n * sizeof (FcValueList) + string_size;
 330     FcValueListFrozenCount[h->value.type]++;
 331     FcValueListFrozenBytes[h->value.type] += size;
 332     e = malloc (size);
 333     if (!e)
 334         return 0;
 335     FcMemAlloc (FC_MEM_VALLIST, size);
 336     e->list = (FcValueList *) (e + 1);
 337     strs = (FcChar8 *) (e->list + n);
 338     new = e->list;
 339     for (l = h; l; l = l->next)
 340     {
 341         if (l->value.type == FcTypeString)
 342         {
 343             new->value.type = FcTypeString;
 344             new->value.u.s = strs;
 345             strcpy ((char *) strs, (char *) l->value.u.s);
 346             strs += strlen ((char *) strs) + 1;
 347         }
 348         else
 349             new->value = FcValueSave (l->value);
 350         new->binding = l->binding;
 351         if (l->next)
 352             new->next = new + 1;
 353         else
 354             new->next = 0;
 355     }
 356     return e;
 357 }
 358
 359 static int      FcValueListTotal;
 360 static int      FcValueListUsed;
 361
 362 static FcValueList *
 363 FcValueListFreeze (FcValueList *l)
 364 {
 365     static FcValueListEnt   *hashTable[FC_VALUE_LIST_HASH_SIZE];
 366     FcChar32                hash = FcValueListHash (l);
 367     FcValueListEnt          **bucket = &hashTable[hash % FC_VALUE_LIST_HASH_SIZE];
 368     FcValueListEnt          *ent;
 369
 370     FcValueListTotal++;
 371     for (ent = *bucket; ent; ent = ent->next)
 372     {
 373         if (ent->hash == hash && FcValueListEqual (ent->list, l))
 374             return ent->list;
 375     }
 376
 377     ent = FcValueListEntCreate (l);
 378     if (!ent)
 379         return 0;
 380
 381     FcValueListUsed++;
 382     ent->hash = hash;
 383     ent->next = *bucket;
 384     *bucket = ent;
 385     return ent->list;
 386 }
 387
 388 static FcChar32
 389 FcPatternBaseHash (FcPattern *b)
 390 {
 391     FcChar32    hash = b->num;
 392     int         i;
 393
 394     for (i = 0; i < b->num; i++)
 395         hash = ((hash << 1) | (hash >> 31)) ^ ((FcChar32) b->elts[i].values);
 396     return hash;
 397 }
 398
 399 typedef struct _FcPatternEnt FcPatternEnt;
 400
 401 struct _FcPatternEnt {
 402     FcPatternEnt    *next;
 403     FcChar32        hash;
 404     FcPattern       pattern;
 405 };
 406
 407 static int      FcPatternTotal;
 408 static int      FcPatternUsed;
 409
 410 static FcPattern *
 411 FcPatternBaseFreeze (FcPattern *b)
 412 {
 413     static FcPatternEnt *hashTable[FC_VALUE_LIST_HASH_SIZE];
 414     FcChar32            hash = FcPatternBaseHash (b);
 415     FcPatternEnt        **bucket = &hashTable[hash % FC_VALUE_LIST_HASH_SIZE];
 416     FcPatternEnt        *ent;
 417     int                 i;
 418     char                *objects;
 419     int                 size_objects;
 420     int                 size;
 421
 422     FcPatternTotal++;
 423     for (ent = *bucket; ent; ent = ent->next)
 424     {
 425         if (ent->hash == hash && b->num == ent->pattern.num)
 426         {
 427             for (i = 0; i < b->num; i++)
 428             {
 429                 if (strcmp (b->elts[i].object, ent->pattern.elts[i].object))
 430                     break;
 431                 if (b->elts[i].values != ent->pattern.elts[i].values)
 432                     break;
 433             }
 434             if (i == b->num)
 435                 return &ent->pattern;
 436         }
 437     }
 438
 439     /*
 440      * Compute size of pattern + elts + object names
 441      */
 442     size_objects = 0;
 443     for (i = 0; i < b->num; i++)
 444         size_objects += strlen (b->elts[i].object) + 1;
 445
 446     size = sizeof (FcPatternEnt) + b->num*sizeof (FcPatternElt) + size_objects;
 447     ent = malloc (size);
 448     if (!ent)
 449         return 0;
 450
 451     FcMemAlloc (FC_MEM_PATTERN, size);
 452     FcPatternUsed++;
 453
 454     ent->pattern.elts = (FcPatternElt *) (ent + 1);
 455     ent->pattern.num = b->num;
 456     ent->pattern.size = b->num;
 457     ent->pattern.ref = FC_REF_CONSTANT;
 458
 459     objects = (char *) (ent->pattern.elts + b->num);
 460     for (i = 0; i < b->num; i++)
 461     {
 462         ent->pattern.elts[i].values = b->elts[i].values;
 463         strcpy (objects, b->elts[i].object);
 464         ent->pattern.elts[i].object = objects;
 465         objects += strlen (objects) + 1;
 466     }
 467
 468     ent->hash = hash;
 469     ent->next = *bucket;
 470     *bucket = ent;
 471     return &ent->pattern;
 472 }
 473
 474 FcPattern *
 475 FcPatternFreeze (FcPattern *p)
 476 {
 477     FcPattern   *b, *n = 0;
 478     int         size;
 479     int         i;
 480
 481     size = sizeof (FcPattern) + p->num * sizeof (FcPatternElt);
 482     b = (FcPattern *) malloc (size);
 483     if (!b)
 484         return 0;
 485     b->num = p->num;
 486     b->size = b->num;
 487     b->ref = 1;
 488     b->elts = (FcPatternElt *) (b + 1);
 489     /*
 490      * Freeze object lists
 491      */
 492     for (i = 0; i < p->num; i++)
 493     {
 494         b->elts[i].object = p->elts[i].object;
 495         b->elts[i].values = FcValueListFreeze (p->elts[i].values);
 496         if (!b->elts[i].values)
 497             goto bail;
 498     }
 499     /*
 500      * Freeze base
 501      */
 502     n = FcPatternBaseFreeze (b);
 503 #ifdef CHATTY
 504     if (FcDebug() & FC_DBG_MEMORY)
 505     {
 506         printf ("ValueLists: total %9d used %9d\n", FcValueListTotal, FcValueListUsed);
 507         printf ("Patterns:   total %9d used %9d\n", FcPatternTotal, FcPatternUsed);
 508     }
 509 #endif
 510 bail:
 511     free (b);
 512 #ifdef DEBUG
 513     assert (FcPatternEqual (n, p));
 514 #endif
 515     return n;
 516 }
 517
 518 static int
 519 FcPatternPosition (const FcPattern *p, const char *object)
 520 {
 521     int     low, high, mid, c;
 522
 523     low = 0;
 524     high = p->num - 1;
 525     c = 1;
 526     mid = 0;
 527     while (low <= high)
 528     {
 529         mid = (low + high) >> 1;
 530         c = strcmp (p->elts[mid].object, object);
 531         if (c == 0)
 532             return mid;
 533         if (c < 0)
 534             low = mid + 1;
 535         else
 536             high = mid - 1;
 537     }
 538     if (c < 0)
 539         mid++;
 540     return -(mid + 1);
 541 }
 542
 543 FcPatternElt *
 544 FcPatternFindElt (const FcPattern *p, const char *object)
 545 {
 546     int     i = FcPatternPosition (p, object);
 547     if (i < 0)
 548         return 0;
 549     return &p->elts[i];
 550 }
 551
 552 FcPatternElt *
 553 FcPatternInsertElt (FcPattern *p, const char *object)
 554 {
 555     int             i;
 556     FcPatternElt   *e;
 557
 558     i = FcPatternPosition (p, object);
 559     if (i < 0)
 560     {
 561         i = -i - 1;
 562
 563         /* grow array */
 564         if (p->num + 1 >= p->size)
 565         {
 566             int s = p->size + 16;
 567             if (p->elts)
 568                 e = (FcPatternElt *) realloc (p->elts, s * sizeof (FcPatternElt));
 569             else
 570                 e = (FcPatternElt *) malloc (s * sizeof (FcPatternElt));
 571             if (!e)
 572                 return FcFalse;
 573             p->elts = e;
 574             if (p->size)
 575                 FcMemFree (FC_MEM_PATELT, p->size * sizeof (FcPatternElt));
 576             FcMemAlloc (FC_MEM_PATELT, s * sizeof (FcPatternElt));
 577             while (p->size < s)
 578             {
 579                 p->elts[p->size].object = 0;
 580                 p->elts[p->size].values = 0;
 581                 p->size++;
 582             }
 583         }
 584
 585         /* move elts up */
 586         memmove (p->elts + i + 1,
 587                  p->elts + i,
 588                  sizeof (FcPatternElt) *
 589                  (p->num - i));
 590
 591         /* bump count */
 592         p->num++;
 593
 594         p->elts[i].object = object;
 595         p->elts[i].values = 0;
 596     }
 597
 598     return &p->elts[i];
 599 }
 600
 601 FcBool
 602 FcPatternEqual (const FcPattern *pa, const FcPattern *pb)
 603 {
 604     int i;
 605
 606     if (pa == pb)
 607         return FcTrue;
 608
 609     if (pa->num != pb->num)
 610         return FcFalse;
 611     for (i = 0; i < pa->num; i++)
 612     {
 613         if (strcmp (pa->elts[i].object, pb->elts[i].object) != 0)
 614             return FcFalse;
 615         if (!FcValueListEqual (pa->elts[i].values, pb->elts[i].values))
 616             return FcFalse;
 617     }
 618     return FcTrue;
 619 }
 620
 621 FcChar32
 622 FcPatternHash (const FcPattern *p)
 623 {
 624     int         i;
 625     FcChar32    h = 0;
 626
 627     for (i = 0; i < p->num; i++)
 628     {
 629         h = (((h << 1) | (h >> 31)) ^
 630              FcStringHash ((const FcChar8 *) p->elts[i].object) ^
 631              FcValueListHash (p->elts[i].values));
 632     }
 633     return h;
 634 }
 635
 636 FcBool
 637 FcPatternEqualSubset (const FcPattern *pa, const FcPattern *pb, const FcObjectSet *os)
 638 {
 639     FcPatternElt    *ea, *eb;
 640     int             i;
 641
 642     for (i = 0; i < os->nobject; i++)
 643     {
 644         ea = FcPatternFindElt (pa, os->objects[i]);
 645         eb = FcPatternFindElt (pb, os->objects[i]);
 646         if (ea)
 647         {
 648             if (!eb)
 649                 return FcFalse;
 650             if (!FcValueListEqual (ea->values, eb->values))
 651                 return FcFalse;
 652         }
 653         else
 654         {
 655             if (eb)
 656                 return FcFalse;
 657         }
 658     }
 659     return FcTrue;
 660 }
 661
 662 FcBool
 663 FcPatternAddWithBinding  (FcPattern         *p,
 664                           const char        *object,
 665                           FcValue           value,
 666                           FcValueBinding    binding,
 667                           FcBool            append)
 668 {
 669     FcPatternElt   *e;
 670     FcValueList    *new, **prev;
 671
 672     if (p->ref == FC_REF_CONSTANT)
 673         goto bail0;
 674
 675     new = (FcValueList *) malloc (sizeof (FcValueList));
 676     if (!new)
 677         goto bail0;
 678
 679     FcMemAlloc (FC_MEM_VALLIST, sizeof (FcValueList));
 680     /* dup string */
 681     value = FcValueSave (value);
 682     if (value.type == FcTypeVoid)
 683         goto bail1;
 684
 685     new->value = value;
 686     new->binding = binding;
 687     new->next = 0;
 688
 689     e = FcPatternInsertElt (p, object);
 690     if (!e)
 691         goto bail2;
 692
 693     if (append)
 694     {
 695         for (prev = &e->values; *prev; prev = &(*prev)->next);
 696         *prev = new;
 697     }
 698     else
 699     {
 700         new->next = e->values;
 701         e->values = new;
 702     }
 703
 704     return FcTrue;
 705
 706 bail2:
 707     switch (value.type) {
 708     case FcTypeString:
 709         FcStrFree ((FcChar8 *) value.u.s);
 710         break;
 711     case FcTypeMatrix:
 712         FcMatrixFree ((FcMatrix *) value.u.m);
 713         break;
 714     case FcTypeCharSet:
 715         FcCharSetDestroy ((FcCharSet *) value.u.c);
 716         break;
 717     case FcTypeLangSet:
 718         FcLangSetDestroy ((FcLangSet *) value.u.l);
 719         break;
 720     default:
 721         break;
 722     }
 723 bail1:
 724     FcMemFree (FC_MEM_VALLIST, sizeof (FcValueList));
 725     free (new);
 726 bail0:
 727     return FcFalse;
 728 }
 729
 730 FcBool
 731 FcPatternAdd (FcPattern *p, const char *object, FcValue value, FcBool append)
 732 {
 733     return FcPatternAddWithBinding (p, object, value, FcValueBindingStrong, append);
 734 }
 735
 736 FcBool
 737 FcPatternAddWeak  (FcPattern *p, const char *object, FcValue value, FcBool append)
 738 {
 739     return FcPatternAddWithBinding (p, object, value, FcValueBindingWeak, append);
 740 }
 741
 742 FcBool
 743 FcPatternDel (FcPattern *p, const char *object)
 744 {
 745     FcPatternElt   *e;
 746     int             i;
 747
 748     e = FcPatternFindElt (p, object);
 749     if (!e)
 750         return FcFalse;
 751
 752     i = e - p->elts;
 753
 754     /* destroy value */
 755     FcValueListDestroy (e->values);
 756
 757     /* shuffle existing ones down */
 758     memmove (e, e+1, (p->elts + p->num - (e + 1)) * sizeof (FcPatternElt));
 759     p->num--;
 760     p->elts[p->num].object = 0;
 761     p->elts[p->num].values = 0;
 762     return FcTrue;
 763 }
 764
 765 FcBool
 766 FcPatternAddInteger (FcPattern *p, const char *object, int i)
 767 {
 768     FcValue     v;
 769
 770     v.type = FcTypeInteger;
 771     v.u.i = i;
 772     return FcPatternAdd (p, object, v, FcTrue);
 773 }
 774
 775 FcBool
 776 FcPatternAddDouble (FcPattern *p, const char *object, double d)
 777 {
 778     FcValue     v;
 779
 780     v.type = FcTypeDouble;
 781     v.u.d = d;
 782     return FcPatternAdd (p, object, v, FcTrue);
 783 }
 784
 785
 786 FcBool
 787 FcPatternAddString (FcPattern *p, const char *object, const FcChar8 *s)
 788 {
 789     FcValue     v;
 790
 791     v.type = FcTypeString;
 792     v.u.s = s;
 793     return FcPatternAdd (p, object, v, FcTrue);
 794 }
 795
 796 FcBool
 797 FcPatternAddMatrix (FcPattern *p, const char *object, const FcMatrix *s)
 798 {
 799     FcValue     v;
 800
 801     v.type = FcTypeMatrix;
 802     v.u.m = (FcMatrix *) s;
 803     return FcPatternAdd (p, object, v, FcTrue);
 804 }
 805
 806
 807 FcBool
 808 FcPatternAddBool (FcPattern *p, const char *object, FcBool b)
 809 {
 810     FcValue     v;
 811
 812     v.type = FcTypeBool;
 813     v.u.b = b;
 814     return FcPatternAdd (p, object, v, FcTrue);
 815 }
 816
 817 FcBool
 818 FcPatternAddCharSet (FcPattern *p, const char *object, const FcCharSet *c)
 819 {
 820     FcValue     v;
 821
 822     v.type = FcTypeCharSet;
 823     v.u.c = (FcCharSet *) c;
 824     return FcPatternAdd (p, object, v, FcTrue);
 825 }
 826
 827 FcBool
 828 FcPatternAddFTFace (FcPattern *p, const char *object, const FT_Face f)
 829 {
 830     FcValue     v;
 831
 832     v.type = FcTypeFTFace;
 833     v.u.f = (void *) f;
 834     return FcPatternAdd (p, object, v, FcTrue);
 835 }
 836
 837 FcBool
 838 FcPatternAddLangSet (FcPattern *p, const char *object, const FcLangSet *ls)
 839 {
 840     FcValue     v;
 841
 842     v.type = FcTypeLangSet;
 843     v.u.l = (FcLangSet *) ls;
 844     return FcPatternAdd (p, object, v, FcTrue);
 845 }
 846
 847 FcResult
 848 FcPatternGet (FcPattern *p, const char *object, int id, FcValue *v)
 849 {
 850     FcPatternElt   *e;
 851     FcValueList    *l;
 852
 853     e = FcPatternFindElt (p, object);
 854     if (!e)
 855         return FcResultNoMatch;
 856     for (l = e->values; l; l = l->next)
 857     {
 858         if (!id)
 859         {
 860             *v = l->value;
 861             return FcResultMatch;
 862         }
 863         id--;
 864     }
 865     return FcResultNoId;
 866 }
 867
 868 FcResult
 869 FcPatternGetInteger (FcPattern *p, const char *object, int id, int *i)
 870 {
 871     FcValue     v;
 872     FcResult    r;
 873
 874     r = FcPatternGet (p, object, id, &v);
 875     if (r != FcResultMatch)
 876         return r;
 877     switch (v.type) {
 878     case FcTypeDouble:
 879         *i = (int) v.u.d;
 880         break;
 881     case FcTypeInteger:
 882         *i = v.u.i;
 883         break;
 884     default:
 885         return FcResultTypeMismatch;
 886     }
 887     return FcResultMatch;
 888 }
 889
 890 FcResult
 891 FcPatternGetDouble (FcPattern *p, const char *object, int id, double *d)
 892 {
 893     FcValue     v;
 894     FcResult    r;
 895
 896     r = FcPatternGet (p, object, id, &v);
 897     if (r != FcResultMatch)
 898         return r;
 899     switch (v.type) {
 900     case FcTypeDouble:
 901         *d = v.u.d;
 902         break;
 903     case FcTypeInteger:
 904         *d = (double) v.u.i;
 905         break;
 906     default:
 907         return FcResultTypeMismatch;
 908     }
 909     return FcResultMatch;
 910 }
 911
 912 FcResult
 913 FcPatternGetString (FcPattern *p, const char *object, int id, FcChar8 ** s)
 914 {
 915     FcValue     v;
 916     FcResult    r;
 917
 918     r = FcPatternGet (p, object, id, &v);
 919     if (r != FcResultMatch)
 920         return r;
 921     if (v.type != FcTypeString)
 922         return FcResultTypeMismatch;
 923     *s = (FcChar8 *) v.u.s;
 924     return FcResultMatch;
 925 }
 926
 927 FcResult
 928 FcPatternGetMatrix (FcPattern *p, const char *object, int id, FcMatrix **m)
 929 {
 930     FcValue     v;
 931     FcResult    r;
 932
 933     r = FcPatternGet (p, object, id, &v);
 934     if (r != FcResultMatch)
 935         return r;
 936     if (v.type != FcTypeMatrix)
 937         return FcResultTypeMismatch;
 938     *m = (FcMatrix *) v.u.m;
 939     return FcResultMatch;
 940 }
 941
 942
 943 FcResult
 944 FcPatternGetBool (FcPattern *p, const char *object, int id, FcBool *b)
 945 {
 946     FcValue     v;
 947     FcResult    r;
 948
 949     r = FcPatternGet (p, object, id, &v);
 950     if (r != FcResultMatch)
 951         return r;
 952     if (v.type != FcTypeBool)
 953         return FcResultTypeMismatch;
 954     *b = v.u.b;
 955     return FcResultMatch;
 956 }
 957
 958 FcResult
 959 FcPatternGetCharSet (FcPattern *p, const char *object, int id, FcCharSet **c)
 960 {
 961     FcValue     v;
 962     FcResult    r;
 963
 964     r = FcPatternGet (p, object, id, &v);
 965     if (r != FcResultMatch)
 966         return r;
 967     if (v.type != FcTypeCharSet)
 968         return FcResultTypeMismatch;
 969     *c = (FcCharSet *) v.u.c;
 970     return FcResultMatch;
 971 }
 972
 973 FcResult
 974 FcPatternGetFTFace (FcPattern *p, const char *object, int id, FT_Face *f)
 975 {
 976     FcValue     v;
 977     FcResult    r;
 978
 979     r = FcPatternGet (p, object, id, &v);
 980     if (r != FcResultMatch)
 981         return r;
 982     if (v.type != FcTypeFTFace)
 983         return FcResultTypeMismatch;
 984     *f = (FT_Face) v.u.f;
 985     return FcResultMatch;
 986 }
 987
 988 FcResult
 989 FcPatternGetLangSet (FcPattern *p, const char *object, int id, FcLangSet **ls)
 990 {
 991     FcValue     v;
 992     FcResult    r;
 993
 994     r = FcPatternGet (p, object, id, &v);
 995     if (r != FcResultMatch)
 996         return r;
 997     if (v.type != FcTypeLangSet)
 998         return FcResultTypeMismatch;
 999     *ls = (FcLangSet *) v.u.l;
1000     return FcResultMatch;
1001 }
1002
1003 FcPattern *
1004 FcPatternDuplicate (FcPattern *orig)
1005 {
1006     FcPattern       *new;
1007     int             i;
1008     FcValueList    *l;
1009
1010     new = FcPatternCreate ();
1011     if (!new)
1012         goto bail0;
1013
1014     for (i = 0; i < orig->num; i++)
1015     {
1016         for (l = orig->elts[i].values; l; l = l->next)
1017             if (!FcPatternAdd (new, orig->elts[i].object, l->value, FcTrue))
1018                 goto bail1;
1019     }
1020
1021     return new;
1022
1023 bail1:
1024     FcPatternDestroy (new);
1025 bail0:
1026     return 0;
1027 }
1028
1029 void
1030 FcPatternReference (FcPattern *p)
1031 {
1032     if (p->ref != FC_REF_CONSTANT)
1033         p->ref++;
1034 }
1035
1036 FcPattern *
1037 FcPatternVaBuild (FcPattern *orig, va_list va)
1038 {
1039     FcPattern   *ret;
1040
1041     FcPatternVapBuild (ret, orig, va);
1042     return ret;
1043 }
1044
1045 FcPattern *
1046 FcPatternBuild (FcPattern *orig, ...)
1047 {
1048     va_list     va;
1049
1050     va_start (va, orig);
1051     FcPatternVapBuild (orig, orig, va);
1052     va_end (va);
1053     return orig;
1054 }