src/fcname.c

   1 /*
   2  * $RCSId: xc/lib/fontconfig/src/fcname.c,v 1.15 2002/09/26 00:17:28 keithp Exp $
   3  *
   4  * Copyright © 2000 Keith Packard
   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 <ctype.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <stdio.h>
  29 #include "fcint.h"
  30
  31 /* Please do not revoke any of these bindings. */
  32 /* The __DUMMY__ object enables callers to distinguish the error return
  33  * of FcObjectToPtrLookup from FC_FAMILY's FcObjectPtr, which would
  34  * otherwise be 0. */
  35 static const FcObjectType _FcBaseObjectTypes[] = {
  36     { "__DUMMY__",      FcTypeVoid, },
  37     { FC_FAMILY,        FcTypeString, },
  38     { FC_FAMILYLANG,    FcTypeString, },
  39     { FC_STYLE,         FcTypeString, },
  40     { FC_STYLELANG,     FcTypeString, },
  41     { FC_FULLNAME,      FcTypeString, },
  42     { FC_FULLNAMELANG,  FcTypeString, },
  43     { FC_SLANT,         FcTypeInteger, },
  44     { FC_WEIGHT,        FcTypeInteger, },
  45     { FC_WIDTH,         FcTypeInteger, },
  46     { FC_SIZE,          FcTypeDouble, },
  47     { FC_ASPECT,        FcTypeDouble, },
  48     { FC_PIXEL_SIZE,    FcTypeDouble, },
  49     { FC_SPACING,       FcTypeInteger, },
  50     { FC_FOUNDRY,       FcTypeString, },
  51 /*    { FC_CORE,                FcTypeBool, }, */
  52     { FC_ANTIALIAS,     FcTypeBool, },
  53     { FC_HINT_STYLE,    FcTypeInteger, },
  54     { FC_HINTING,       FcTypeBool, },
  55     { FC_VERTICAL_LAYOUT,   FcTypeBool, },
  56     { FC_AUTOHINT,      FcTypeBool, },
  57     { FC_GLOBAL_ADVANCE,    FcTypeBool, },
  58 /*    { FC_XLFD,                FcTypeString, }, */
  59     { FC_FILE,          FcTypeString, },
  60     { FC_INDEX,         FcTypeInteger, },
  61     { FC_RASTERIZER,    FcTypeString, },
  62     { FC_OUTLINE,       FcTypeBool, },
  63     { FC_SCALABLE,      FcTypeBool, },
  64     { FC_DPI,           FcTypeDouble },
  65     { FC_RGBA,          FcTypeInteger, },
  66     { FC_SCALE,         FcTypeDouble, },
  67     { FC_MINSPACE,      FcTypeBool, },
  68 /*    { FC_RENDER,      FcTypeBool, },*/
  69     { FC_CHAR_WIDTH,    FcTypeInteger },
  70     { FC_CHAR_HEIGHT,   FcTypeInteger },
  71     { FC_MATRIX,        FcTypeMatrix },
  72     { FC_CHARSET,       FcTypeCharSet },
  73     { FC_LANG,          FcTypeLangSet },
  74     { FC_FONTVERSION,   FcTypeInteger },
  75     { FC_CAPABILITY,    FcTypeString },
  76     { FC_FONTFORMAT,    FcTypeString },
  77     { FC_EMBOLDEN,      FcTypeBool },
  78     { FC_EMBEDDED_BITMAP,   FcTypeBool },
  79 };
  80
  81 #define NUM_OBJECT_TYPES    (sizeof _FcBaseObjectTypes / sizeof _FcBaseObjectTypes[0])
  82
  83 static FcObjectType * _FcUserObjectNames = 0;
  84 static int user_obj_alloc = 0;
  85 static int next_basic_offset = NUM_OBJECT_TYPES;
  86
  87 typedef struct _FcObjectTypeList    FcObjectTypeList;
  88
  89 struct _FcObjectTypeList {
  90     const FcObjectTypeList  *next;
  91     const FcObjectType      *types;
  92     int                     ntypes;
  93     int                     basic_offset;
  94 };
  95
  96 static const FcObjectTypeList _FcBaseObjectTypesList = {
  97     0,
  98     _FcBaseObjectTypes,
  99     NUM_OBJECT_TYPES,
 100     0
 101 };
 102
 103 static const FcObjectTypeList   *_FcObjectTypes = &_FcBaseObjectTypesList;
 104
 105 FcBool
 106 FcNameRegisterObjectTypes (const FcObjectType *types, int ntypes)
 107 {
 108     FcObjectTypeList    *l;
 109
 110     l = (FcObjectTypeList *) malloc (sizeof (FcObjectTypeList));
 111     if (!l)
 112         return FcFalse;
 113     FcMemAlloc (FC_MEM_OBJECTTYPE, sizeof (FcObjectTypeList));
 114     l->types = types;
 115     l->ntypes = ntypes;
 116     l->next = _FcObjectTypes;
 117     l->basic_offset = next_basic_offset;
 118     next_basic_offset += ntypes;
 119     _FcObjectTypes = l;
 120     return FcTrue;
 121 }
 122
 123 static FcBool
 124 FcNameUnregisterObjectTypesFree (const FcObjectType *types, int ntypes,
 125                                  FcBool do_free)
 126 {
 127     const FcObjectTypeList      *l, **prev;
 128
 129     for (prev = &_FcObjectTypes;
 130          (l = *prev);
 131          prev = (const FcObjectTypeList **) &(l->next))
 132     {
 133         if (l->types == types && l->ntypes == ntypes)
 134         {
 135             *prev = l->next;
 136             if (do_free) {
 137                 FcMemFree (FC_MEM_OBJECTTYPE, sizeof (FcObjectTypeList));
 138                 free ((void *) l);
 139             }
 140             return FcTrue;
 141         }
 142     }
 143     return FcFalse;
 144 }
 145
 146 FcBool
 147 FcNameUnregisterObjectTypes (const FcObjectType *types, int ntypes)
 148 {
 149     return FcNameUnregisterObjectTypesFree (types, ntypes, FcTrue);
 150 }
 151
 152 const FcObjectType *
 153 FcNameGetObjectType (const char *object)
 154 {
 155     int                     i;
 156     const FcObjectTypeList  *l;
 157     const FcObjectType      *t;
 158
 159     for (l = _FcObjectTypes; l; l = l->next)
 160     {
 161         if (l == (FcObjectTypeList*)_FcUserObjectNames)
 162             continue;
 163
 164         for (i = 0; i < l->ntypes; i++)
 165         {
 166             t = &l->types[i];
 167             if (!strcmp (object, t->object))
 168                 return t;
 169         }
 170     }
 171     return 0;
 172 }
 173
 174 #define OBJECT_HASH_SIZE    31
 175 struct objectBucket {
 176     struct objectBucket *next;
 177     FcChar32            hash;
 178     int                 id;
 179 };
 180 static struct objectBucket *FcObjectBuckets[OBJECT_HASH_SIZE];
 181
 182 /* Design constraint: biggest_known_ntypes must never change
 183  * after any call to FcNameRegisterObjectTypes. */
 184 static const FcObjectType *biggest_known_types = _FcBaseObjectTypes;
 185 static FcBool allocated_biggest_known_types;
 186 static int biggest_known_ntypes = NUM_OBJECT_TYPES;
 187 static int biggest_known_count = 0;
 188 static char * biggest_ptr;
 189
 190
 191 static FcObjectPtr
 192 FcObjectToPtrLookup (const char * object)
 193 {
 194     FcObjectPtr             i = 0, n;
 195     const FcObjectTypeList  *l;
 196     FcObjectType            *t = _FcUserObjectNames;
 197
 198     for (l = _FcObjectTypes; l; l = l->next)
 199     {
 200         for (i = 0; i < l->ntypes; i++)
 201         {
 202             t = (FcObjectType *)&l->types[i];
 203             if (!strcmp (object, t->object))
 204             {
 205                 if (l == (FcObjectTypeList*)_FcUserObjectNames)
 206                     return -i;
 207                 else
 208                     return l->basic_offset + i;
 209             }
 210         }
 211     }
 212
 213     /* We didn't match.  Look for the application's FcObjectTypeList
 214      * and replace it in-place. */
 215     for (l = _FcObjectTypes; l; l = l->next)
 216     {
 217         if (l->types == _FcUserObjectNames)
 218             break;
 219     }
 220
 221     if (!_FcUserObjectNames ||
 222         (l && l->types == _FcUserObjectNames && user_obj_alloc < l->ntypes))
 223     {
 224         int nt = user_obj_alloc + 4;
 225         FcObjectType * t = realloc (_FcUserObjectNames,
 226                                     nt * sizeof (FcObjectType));
 227         if (!t)
 228             return 0;
 229         _FcUserObjectNames = t;
 230         user_obj_alloc = nt;
 231     }
 232
 233     if (l && l->types == _FcUserObjectNames)
 234     {
 235         n = l->ntypes;
 236         FcNameUnregisterObjectTypesFree (l->types, l->ntypes, FcFalse);
 237     }
 238     else
 239         n = 0;
 240
 241     FcNameRegisterObjectTypes (_FcUserObjectNames, n+1);
 242
 243     for (l = _FcObjectTypes; l; l = l->next)
 244     {
 245         if (l->types == _FcUserObjectNames)
 246         {
 247             t = (FcObjectType *)l->types;
 248             break;
 249         }
 250     }
 251
 252     if (!t)
 253         return 0;
 254
 255     t[n].object = object;
 256     t[n].type = FcTypeVoid;
 257
 258     return -n;
 259 }
 260
 261 FcObjectPtr
 262 FcObjectToPtr (const char * name)
 263 {
 264     FcChar32            hash = FcStringHash ((const FcChar8 *) name);
 265     struct objectBucket **p;
 266     struct objectBucket *b;
 267     int                 size;
 268
 269     for (p = &FcObjectBuckets[hash % OBJECT_HASH_SIZE]; (b = *p); p = &(b->next)
 270 )
 271         if (b->hash == hash && !strcmp (name, (char *) (b + 1)))
 272             return b->id;
 273     size = sizeof (struct objectBucket) + strlen (name) + 1;
 274     /* workaround glibc bug which reads strlen in groups of 4 */
 275     b = malloc (size + sizeof (int));
 276     FcMemAlloc (FC_MEM_STATICSTR, size + sizeof(int));
 277     if (!b)
 278         return 0;
 279     b->next = 0;
 280     b->hash = hash;
 281     b->id = FcObjectToPtrLookup (name);
 282     strcpy ((char *) (b + 1), name);
 283     *p = b;
 284     return b->id;
 285 }
 286
 287 void
 288 FcObjectStaticNameFini (void)
 289 {
 290     int i, size;
 291     struct objectBucket *b, *next;
 292     char *name;
 293
 294     for (i = 0; i < OBJECT_HASH_SIZE; i++)
 295     {
 296         for (b = FcObjectBuckets[i]; b; b = next)
 297         {
 298             next = b->next;
 299             name = (char *) (b + 1);
 300             size = sizeof (struct objectBucket) + strlen (name) + 1;
 301             FcMemFree (FC_MEM_STATICSTR, size);
 302             free (b);
 303         }
 304         FcObjectBuckets[i] = 0;
 305     }
 306 }
 307
 308 const char *
 309 FcObjectPtrU (FcObjectPtr si)
 310 {
 311     const FcObjectTypeList  *l;
 312     int i, j;
 313
 314     if (si > 0)
 315     {
 316         if (si < biggest_known_ntypes)
 317             return biggest_known_types[si].object;
 318
 319         j = 0;
 320         for (l = _FcObjectTypes; l; l = l->next)
 321             for (i = 0; i < l->ntypes; i++, j++)
 322                 if (j == si)
 323                     return l->types[i].object;
 324     }
 325
 326     return _FcUserObjectNames[-si].object;
 327 }
 328
 329 int
 330 FcObjectNeededBytes ()
 331 {
 332     int num = 0, i;
 333     for (i = 0; i < biggest_known_ntypes; i++)
 334     {
 335         const char * t = biggest_known_types[i].object;
 336         num = num + strlen(t) + 1;
 337     }
 338     biggest_known_count = num;
 339     return num + sizeof(int);
 340 }
 341
 342 int
 343 FcObjectNeededBytesAlign (void)
 344 {
 345     return fc_alignof (int) + fc_alignof (char);
 346 }
 347
 348 void *
 349 FcObjectDistributeBytes (FcCache * metadata, void * block_ptr)
 350 {
 351     block_ptr = ALIGN (block_ptr, int);
 352     *(int *)block_ptr = biggest_known_ntypes;
 353     block_ptr = (int *) block_ptr + 1;
 354     block_ptr = ALIGN (block_ptr, char);
 355     biggest_ptr = block_ptr;
 356     block_ptr = (char *) block_ptr + biggest_known_count;
 357     return block_ptr;
 358 }
 359
 360 void
 361 FcObjectSerialize (void)
 362 {
 363     int i;
 364     for (i = 0; i < biggest_known_ntypes; i++)
 365     {
 366         const char * t = biggest_known_types[i].object;
 367         strcpy (biggest_ptr, t);
 368         biggest_ptr = biggest_ptr + strlen(t) + 1;
 369     }
 370 }
 371
 372 void *
 373 FcObjectUnserialize (FcCache * metadata, void *block_ptr)
 374 {
 375     int new_biggest;
 376     new_biggest = *(int *)block_ptr;
 377     block_ptr = ALIGN (block_ptr, int);
 378     block_ptr = (int *) block_ptr + 1;
 379     if (biggest_known_ntypes < new_biggest)
 380     {
 381         int i;
 382         char * bp = (char *)block_ptr;
 383         FcObjectType * bn;
 384         FcObjectTypeList * bnl;
 385
 386         bn = malloc (sizeof (const FcObjectType) * (new_biggest + 1));
 387         if (!bn)
 388             return 0;
 389
 390         bnl = malloc (sizeof (FcObjectTypeList));
 391         if (!bnl)
 392         {
 393             free (bn);
 394             return 0;
 395         }
 396
 397         for (i = 0; i < new_biggest; i++)
 398         {
 399             const FcObjectType * t = FcNameGetObjectType(bp);
 400             if (t)
 401                 bn[i].type = t->type;
 402             else
 403                 bn[i].type = FcTypeVoid;
 404             bn[i].object = bp;
 405             bp = bp + strlen(bp) + 1;
 406         }
 407
 408         FcNameUnregisterObjectTypesFree (biggest_known_types, biggest_known_ntypes, FcFalse);
 409         if (allocated_biggest_known_types)
 410         {
 411             free ((FcObjectTypeList *)biggest_known_types);
 412         }
 413         else
 414             allocated_biggest_known_types = FcTrue;
 415
 416         FcNameRegisterObjectTypes (bn, new_biggest);
 417         biggest_known_ntypes = new_biggest;
 418         biggest_known_types = (const FcObjectType *)bn;
 419     }
 420     block_ptr = ALIGN (block_ptr, char);
 421     block_ptr = (char *) block_ptr + biggest_known_count;
 422     return block_ptr;
 423 }
 424
 425 static const FcConstant _FcBaseConstants[] = {
 426     { (FcChar8 *) "thin",           "weight",   FC_WEIGHT_THIN, },
 427     { (FcChar8 *) "extralight",     "weight",   FC_WEIGHT_EXTRALIGHT, },
 428     { (FcChar8 *) "ultralight",     "weight",   FC_WEIGHT_EXTRALIGHT, },
 429     { (FcChar8 *) "light",          "weight",   FC_WEIGHT_LIGHT, },
 430     { (FcChar8 *) "book",           "weight",   FC_WEIGHT_BOOK, },
 431     { (FcChar8 *) "regular",        "weight",   FC_WEIGHT_REGULAR, },
 432     { (FcChar8 *) "medium",         "weight",   FC_WEIGHT_MEDIUM, },
 433     { (FcChar8 *) "demibold",       "weight",   FC_WEIGHT_DEMIBOLD, },
 434     { (FcChar8 *) "semibold",       "weight",   FC_WEIGHT_DEMIBOLD, },
 435     { (FcChar8 *) "bold",           "weight",   FC_WEIGHT_BOLD, },
 436     { (FcChar8 *) "extrabold",      "weight",   FC_WEIGHT_EXTRABOLD, },
 437     { (FcChar8 *) "ultrabold",      "weight",   FC_WEIGHT_EXTRABOLD, },
 438     { (FcChar8 *) "black",          "weight",   FC_WEIGHT_BLACK, },
 439
 440     { (FcChar8 *) "roman",          "slant",    FC_SLANT_ROMAN, },
 441     { (FcChar8 *) "italic",         "slant",    FC_SLANT_ITALIC, },
 442     { (FcChar8 *) "oblique",        "slant",    FC_SLANT_OBLIQUE, },
 443
 444     { (FcChar8 *) "ultracondensed", "width",    FC_WIDTH_ULTRACONDENSED },
 445     { (FcChar8 *) "extracondensed", "width",    FC_WIDTH_EXTRACONDENSED },
 446     { (FcChar8 *) "condensed",      "width",    FC_WIDTH_CONDENSED },
 447     { (FcChar8 *) "semicondensed", "width",     FC_WIDTH_SEMICONDENSED },
 448     { (FcChar8 *) "normal",         "width",    FC_WIDTH_NORMAL },
 449     { (FcChar8 *) "semiexpanded",   "width",    FC_WIDTH_SEMIEXPANDED },
 450     { (FcChar8 *) "expanded",       "width",    FC_WIDTH_EXPANDED },
 451     { (FcChar8 *) "extraexpanded",  "width",    FC_WIDTH_EXTRAEXPANDED },
 452     { (FcChar8 *) "ultraexpanded",  "width",    FC_WIDTH_ULTRAEXPANDED },
 453
 454     { (FcChar8 *) "proportional",   "spacing",  FC_PROPORTIONAL, },
 455     { (FcChar8 *) "dual",           "spacing",  FC_DUAL, },
 456     { (FcChar8 *) "mono",           "spacing",  FC_MONO, },
 457     { (FcChar8 *) "charcell",       "spacing",  FC_CHARCELL, },
 458
 459     { (FcChar8 *) "unknown",        "rgba",         FC_RGBA_UNKNOWN },
 460     { (FcChar8 *) "rgb",            "rgba",         FC_RGBA_RGB, },
 461     { (FcChar8 *) "bgr",            "rgba",         FC_RGBA_BGR, },
 462     { (FcChar8 *) "vrgb",           "rgba",         FC_RGBA_VRGB },
 463     { (FcChar8 *) "vbgr",           "rgba",         FC_RGBA_VBGR },
 464     { (FcChar8 *) "none",           "rgba",         FC_RGBA_NONE },
 465
 466     { (FcChar8 *) "hintnone",       "hintstyle",   FC_HINT_NONE },
 467     { (FcChar8 *) "hintslight",     "hintstyle",   FC_HINT_SLIGHT },
 468     { (FcChar8 *) "hintmedium",     "hintstyle",   FC_HINT_MEDIUM },
 469     { (FcChar8 *) "hintfull",       "hintstyle",   FC_HINT_FULL },
 470 };
 471
 472 #define NUM_FC_CONSTANTS   (sizeof _FcBaseConstants/sizeof _FcBaseConstants[0])
 473
 474 typedef struct _FcConstantList FcConstantList;
 475
 476 struct _FcConstantList {
 477     const FcConstantList    *next;
 478     const FcConstant        *consts;
 479     int                     nconsts;
 480 };
 481
 482 static const FcConstantList _FcBaseConstantList = {
 483     0,
 484     _FcBaseConstants,
 485     NUM_FC_CONSTANTS
 486 };
 487
 488 static const FcConstantList     *_FcConstants = &_FcBaseConstantList;
 489
 490 FcBool
 491 FcNameRegisterConstants (const FcConstant *consts, int nconsts)
 492 {
 493     FcConstantList      *l;
 494
 495     l = (FcConstantList *) malloc (sizeof (FcConstantList));
 496     if (!l)
 497         return FcFalse;
 498     FcMemAlloc (FC_MEM_CONSTANT, sizeof (FcConstantList));
 499     l->consts = consts;
 500     l->nconsts = nconsts;
 501     l->next = _FcConstants;
 502     _FcConstants = l;
 503     return FcTrue;
 504 }
 505
 506 FcBool
 507 FcNameUnregisterConstants (const FcConstant *consts, int nconsts)
 508 {
 509     const FcConstantList        *l, **prev;
 510
 511     for (prev = &_FcConstants;
 512          (l = *prev);
 513          prev = (const FcConstantList **) &(l->next))
 514     {
 515         if (l->consts == consts && l->nconsts == nconsts)
 516         {
 517             *prev = l->next;
 518             FcMemFree (FC_MEM_CONSTANT, sizeof (FcConstantList));
 519             free ((void *) l);
 520             return FcTrue;
 521         }
 522     }
 523     return FcFalse;
 524 }
 525
 526 const FcConstant *
 527 FcNameGetConstant (FcChar8 *string)
 528 {
 529     const FcConstantList    *l;
 530     int                     i;
 531
 532     for (l = _FcConstants; l; l = l->next)
 533     {
 534         for (i = 0; i < l->nconsts; i++)
 535             if (!FcStrCmpIgnoreCase (string, l->consts[i].name))
 536                 return &l->consts[i];
 537     }
 538     return 0;
 539 }
 540
 541 FcBool
 542 FcNameConstant (FcChar8 *string, int *result)
 543 {
 544     const FcConstant    *c;
 545
 546     if ((c = FcNameGetConstant(string)))
 547     {
 548         *result = c->value;
 549         return FcTrue;
 550     }
 551     return FcFalse;
 552 }
 553
 554 FcBool
 555 FcNameBool (const FcChar8 *v, FcBool *result)
 556 {
 557     char    c0, c1;
 558
 559     c0 = *v;
 560     c0 = FcToLower (c0);
 561     if (c0 == 't' || c0 == 'y' || c0 == '1')
 562     {
 563         *result = FcTrue;
 564         return FcTrue;
 565     }
 566     if (c0 == 'f' || c0 == 'n' || c0 == '0')
 567     {
 568         *result = FcFalse;
 569         return FcTrue;
 570     }
 571     if (c0 == 'o')
 572     {
 573         c1 = v[1];
 574         c1 = FcToLower (c1);
 575         if (c1 == 'n')
 576         {
 577             *result = FcTrue;
 578             return FcTrue;
 579         }
 580         if (c1 == 'f')
 581         {
 582             *result = FcFalse;
 583             return FcTrue;
 584         }
 585     }
 586     return FcFalse;
 587 }
 588
 589 static FcValue
 590 FcNameConvert (FcType type, FcChar8 *string, FcMatrix *m)
 591 {
 592     FcValue     v;
 593
 594     v.type = type;
 595     switch (v.type) {
 596     case FcTypeInteger:
 597         if (!FcNameConstant (string, &v.u.i))
 598             v.u.i = atoi ((char *) string);
 599         break;
 600     case FcTypeString:
 601         v.u.s = FcStrStaticName(string);
 602         break;
 603     case FcTypeBool:
 604         if (!FcNameBool (string, &v.u.b))
 605             v.u.b = FcFalse;
 606         break;
 607     case FcTypeDouble:
 608         v.u.d = strtod ((char *) string, 0);
 609         break;
 610     case FcTypeMatrix:
 611         v.u.m = m;
 612         sscanf ((char *) string, "%lg %lg %lg %lg", &m->xx, &m->xy, &m->yx, &m->yy);
 613         break;
 614     case FcTypeCharSet:
 615         v.u.c = FcNameParseCharSet (string);
 616         break;
 617     case FcTypeLangSet:
 618         v.u.l = FcNameParseLangSet (string);
 619         break;
 620     default:
 621         break;
 622     }
 623     return v;
 624 }
 625
 626 static const FcChar8 *
 627 FcNameFindNext (const FcChar8 *cur, const char *delim, FcChar8 *save, FcChar8 *last)
 628 {
 629     FcChar8    c;
 630
 631     while ((c = *cur))
 632     {
 633         if (c == '\\')
 634         {
 635             ++cur;
 636             if (!(c = *cur))
 637                 break;
 638         }
 639         else if (strchr (delim, c))
 640             break;
 641         ++cur;
 642         *save++ = c;
 643     }
 644     *save = 0;
 645     *last = *cur;
 646     if (*cur)
 647         cur++;
 648     return cur;
 649 }
 650
 651 FcPattern *
 652 FcNameParse (const FcChar8 *name)
 653 {
 654     FcChar8             *save;
 655     FcPattern           *pat;
 656     double              d;
 657     FcChar8             *e;
 658     FcChar8             delim;
 659     FcValue             v;
 660     FcMatrix            m;
 661     const FcObjectType  *t;
 662     const FcConstant    *c;
 663
 664     /* freed below */
 665     save = malloc (strlen ((char *) name) + 1);
 666     if (!save)
 667         goto bail0;
 668     pat = FcPatternCreate ();
 669     if (!pat)
 670         goto bail1;
 671
 672     for (;;)
 673     {
 674         name = FcNameFindNext (name, "-,:", save, &delim);
 675         if (save[0])
 676         {
 677             if (!FcPatternAddString (pat, FC_FAMILY, save))
 678                 goto bail2;
 679         }
 680         if (delim != ',')
 681             break;
 682     }
 683     if (delim == '-')
 684     {
 685         for (;;)
 686         {
 687             name = FcNameFindNext (name, "-,:", save, &delim);
 688             d = strtod ((char *) save, (char **) &e);
 689             if (e != save)
 690             {
 691                 if (!FcPatternAddDouble (pat, FC_SIZE, d))
 692                     goto bail2;
 693             }
 694             if (delim != ',')
 695                 break;
 696         }
 697     }
 698     while (delim == ':')
 699     {
 700         name = FcNameFindNext (name, "=_:", save, &delim);
 701         if (save[0])
 702         {
 703             if (delim == '=' || delim == '_')
 704             {
 705                 t = FcNameGetObjectType ((char *) save);
 706                 for (;;)
 707                 {
 708                     name = FcNameFindNext (name, ":,", save, &delim);
 709                     if (t && strcmp (t->object, _FcBaseObjectTypes[0].object))
 710                     {
 711                         v = FcNameConvert (t->type, save, &m);
 712                         if (!FcPatternAdd (pat, t->object, v, FcTrue))
 713                         {
 714                             switch (v.type) {
 715                             case FcTypeCharSet:
 716                                 FcCharSetDestroy ((FcCharSet *) v.u.c);
 717                                 break;
 718                             case FcTypeLangSet:
 719                                 FcLangSetDestroy ((FcLangSet *) v.u.l);
 720                                 break;
 721                             default:
 722                                 break;
 723                             }
 724                             goto bail2;
 725                         }
 726                         switch (v.type) {
 727                         case FcTypeCharSet:
 728                             FcCharSetDestroy ((FcCharSet *) v.u.c);
 729                             break;
 730                         case FcTypeLangSet:
 731                             FcLangSetDestroy ((FcLangSet *) v.u.l);
 732                             break;
 733                         default:
 734                             break;
 735                         }
 736                     }
 737                     if (delim != ',')
 738                         break;
 739                 }
 740             }
 741             else
 742             {
 743                 if ((c = FcNameGetConstant (save)))
 744                 {
 745                     if (!FcPatternAddInteger (pat, c->object, c->value))
 746                         goto bail2;
 747                 }
 748             }
 749         }
 750     }
 751
 752     free (save);
 753     return pat;
 754
 755 bail2:
 756     FcPatternDestroy (pat);
 757 bail1:
 758     free (save);
 759 bail0:
 760     return 0;
 761 }
 762 static FcBool
 763 FcNameUnparseString (FcStrBuf       *buf,
 764                      const FcChar8  *string,
 765                      const FcChar8  *escape)
 766 {
 767     FcChar8 c;
 768     while ((c = *string++))
 769     {
 770         if (escape && strchr ((char *) escape, (char) c))
 771         {
 772             if (!FcStrBufChar (buf, escape[0]))
 773                 return FcFalse;
 774         }
 775         if (!FcStrBufChar (buf, c))
 776             return FcFalse;
 777     }
 778     return FcTrue;
 779 }
 780
 781 static FcBool
 782 FcNameUnparseValue (FcStrBuf    *buf,
 783                     FcValue     *v0,
 784                     FcChar8     *escape)
 785 {
 786     FcChar8     temp[1024];
 787     FcValue v = FcValueCanonicalize(v0);
 788
 789     switch (v.type) {
 790     case FcTypeVoid:
 791         return FcTrue;
 792     case FcTypeInteger:
 793         sprintf ((char *) temp, "%d", v.u.i);
 794         return FcNameUnparseString (buf, temp, 0);
 795     case FcTypeDouble:
 796         sprintf ((char *) temp, "%g", v.u.d);
 797         return FcNameUnparseString (buf, temp, 0);
 798     case FcTypeString:
 799         return FcNameUnparseString (buf, v.u.s, escape);
 800     case FcTypeBool:
 801         return FcNameUnparseString (buf, v.u.b ? (FcChar8 *) "True" : (FcChar8 *) "False", 0);
 802     case FcTypeMatrix:
 803         sprintf ((char *) temp, "%g %g %g %g",
 804                  v.u.m->xx, v.u.m->xy, v.u.m->yx, v.u.m->yy);
 805         return FcNameUnparseString (buf, temp, 0);
 806     case FcTypeCharSet:
 807         return FcNameUnparseCharSet (buf, v.u.c);
 808     case FcTypeLangSet:
 809         return FcNameUnparseLangSet (buf, v.u.l);
 810     case FcTypeFTFace:
 811         return FcTrue;
 812     }
 813     return FcFalse;
 814 }
 815
 816 static FcBool
 817 FcNameUnparseValueList (FcStrBuf        *buf,
 818                         FcValueListPtr  v,
 819                         FcChar8         *escape)
 820 {
 821     while (FcValueListPtrU(v))
 822     {
 823         if (!FcNameUnparseValue (buf, &FcValueListPtrU(v)->value, escape))
 824             return FcFalse;
 825         if (FcValueListPtrU(v = FcValueListPtrU(v)->next))
 826             if (!FcNameUnparseString (buf, (FcChar8 *) ",", 0))
 827                 return FcFalse;
 828     }
 829     return FcTrue;
 830 }
 831
 832 #define FC_ESCAPE_FIXED    "\\-:,"
 833 #define FC_ESCAPE_VARIABLE "\\=_:,"
 834
 835 FcChar8 *
 836 FcNameUnparse (FcPattern *pat)
 837 {
 838     return FcNameUnparseEscaped (pat, FcTrue);
 839 }
 840
 841 FcChar8 *
 842 FcNameUnparseEscaped (FcPattern *pat, FcBool escape)
 843 {
 844     FcStrBuf                buf;
 845     FcChar8                 buf_static[8192];
 846     int                     i;
 847     FcPatternElt            *e;
 848     const FcObjectTypeList  *l;
 849     const FcObjectType      *o;
 850
 851     FcStrBufInit (&buf, buf_static, sizeof (buf_static));
 852     e = FcPatternFindElt (pat, FC_FAMILY);
 853     if (e)
 854     {
 855         if (!FcNameUnparseValueList (&buf, e->values, escape ? (FcChar8 *) FC_ESCAPE_FIXED : 0))
 856             goto bail0;
 857     }
 858     e = FcPatternFindElt (pat, FC_SIZE);
 859     if (e)
 860     {
 861         if (!FcNameUnparseString (&buf, (FcChar8 *) "-", 0))
 862             goto bail0;
 863         if (!FcNameUnparseValueList (&buf, e->values, escape ? (FcChar8 *) FC_ESCAPE_FIXED : 0))
 864             goto bail0;
 865     }
 866     for (l = _FcObjectTypes; l; l = l->next)
 867     {
 868         for (i = 0; i < l->ntypes; i++)
 869         {
 870             o = &l->types[i];
 871             if (!strcmp (o->object, FC_FAMILY) ||
 872                 !strcmp (o->object, FC_SIZE) ||
 873                 !strcmp (o->object, FC_FILE))
 874                 continue;
 875
 876             e = FcPatternFindElt (pat, o->object);
 877             if (e)
 878             {
 879                 if (!FcNameUnparseString (&buf, (FcChar8 *) ":", 0))
 880                     goto bail0;
 881                 if (!FcNameUnparseString (&buf, (FcChar8 *) o->object, escape ? (FcChar8 *) FC_ESCAPE_VARIABLE : 0))
 882                     goto bail0;
 883                 if (!FcNameUnparseString (&buf, (FcChar8 *) "=", 0))
 884                     goto bail0;
 885                 if (!FcNameUnparseValueList (&buf, e->values, escape ?
 886                                              (FcChar8 *) FC_ESCAPE_VARIABLE : 0))
 887                     goto bail0;
 888             }
 889         }
 890     }
 891     return FcStrBufDone (&buf);
 892 bail0:
 893     FcStrBufDestroy (&buf);
 894     return 0;
 895 }