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 "fcint.h"
  26 #include <ctype.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include <stdio.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     FcBool                  replace;
 198
 199     for (l = _FcObjectTypes; l; l = l->next)
 200     {
 201         for (i = 0; i < l->ntypes; i++)
 202         {
 203             t = (FcObjectType *)&l->types[i];
 204             if (!strcmp (object, t->object))
 205             {
 206                 if (l->types == _FcUserObjectNames)
 207                     return -i;
 208                 else
 209                     return l->basic_offset + i;
 210             }
 211         }
 212     }
 213
 214     /* We didn't match.  Look for the application's FcObjectTypeList
 215      * and replace it in-place. */
 216     for (l = _FcObjectTypes; l; l = l->next)
 217     {
 218         if (l->types == _FcUserObjectNames)
 219             break;
 220     }
 221
 222     replace = l && l->types == _FcUserObjectNames;
 223     if (!_FcUserObjectNames ||
 224         (replace && user_obj_alloc <= l->ntypes))
 225     {
 226         int nt = user_obj_alloc + 4;
 227         FcObjectType * tt = realloc (_FcUserObjectNames,
 228                                     nt * sizeof (FcObjectType));
 229         if (!tt)
 230             return 0;
 231         _FcUserObjectNames = tt;
 232         user_obj_alloc = nt;
 233     }
 234
 235     if (replace)
 236     {
 237         n = l->ntypes;
 238         FcNameUnregisterObjectTypesFree (l->types, l->ntypes, FcFalse);
 239     }
 240     else
 241         n = 0;
 242
 243     FcNameRegisterObjectTypes (_FcUserObjectNames, n+1);
 244
 245     if (!_FcUserObjectNames)
 246         return 0;
 247
 248     _FcUserObjectNames[n].object = object;
 249     _FcUserObjectNames[n].type = FcTypeVoid;
 250
 251     return -n;
 252 }
 253
 254 FcObjectPtr
 255 FcObjectToPtr (const char * name)
 256 {
 257     FcChar32            hash = FcStringHash ((const FcChar8 *) name);
 258     struct objectBucket **p;
 259     struct objectBucket *b;
 260     int                 size;
 261
 262     for (p = &FcObjectBuckets[hash % OBJECT_HASH_SIZE]; (b = *p); p = &(b->next)
 263 )
 264         if (b->hash == hash && !strcmp (name, (char *) (b + 1)))
 265             return b->id;
 266     size = sizeof (struct objectBucket) + strlen (name) + 1;
 267     /* workaround glibc bug which reads strlen in groups of 4 */
 268     b = malloc (size + sizeof (int));
 269     FcMemAlloc (FC_MEM_STATICSTR, size + sizeof(int));
 270     if (!b)
 271         return 0;
 272     b->next = 0;
 273     b->hash = hash;
 274     b->id = FcObjectToPtrLookup (name);
 275     strcpy ((char *) (b + 1), name);
 276     *p = b;
 277     return b->id;
 278 }
 279
 280 void
 281 FcObjectStaticNameFini (void)
 282 {
 283     int i, size;
 284     struct objectBucket *b, *next;
 285     char *name;
 286
 287     for (i = 0; i < OBJECT_HASH_SIZE; i++)
 288     {
 289         for (b = FcObjectBuckets[i]; b; b = next)
 290         {
 291             next = b->next;
 292             name = (char *) (b + 1);
 293             size = sizeof (struct objectBucket) + strlen (name) + 1;
 294             FcMemFree (FC_MEM_STATICSTR, size);
 295             free (b);
 296         }
 297         FcObjectBuckets[i] = 0;
 298     }
 299 }
 300
 301 const char *
 302 FcObjectPtrU (FcObjectPtr si)
 303 {
 304     const FcObjectTypeList  *l;
 305     int i, j;
 306
 307     if (si > 0)
 308     {
 309         if (si < biggest_known_ntypes)
 310             return biggest_known_types[si].object;
 311
 312         j = 0;
 313         for (l = _FcObjectTypes; l; l = l->next)
 314             for (i = 0; i < l->ntypes; i++, j++)
 315                 if (j == si)
 316                     return l->types[i].object;
 317     }
 318
 319     return _FcUserObjectNames[-si].object;
 320 }
 321
 322 int
 323 FcObjectNeededBytes ()
 324 {
 325     int num = 0, i;
 326     for (i = 0; i < biggest_known_ntypes; i++)
 327     {
 328         const char * t = biggest_known_types[i].object;
 329         num = num + strlen(t) + 1;
 330     }
 331     biggest_known_count = num;
 332     return num + sizeof(int);
 333 }
 334
 335 int
 336 FcObjectNeededBytesAlign (void)
 337 {
 338     return fc_alignof (int) + fc_alignof (char);
 339 }
 340
 341 void *
 342 FcObjectDistributeBytes (FcCache * metadata, void * block_ptr)
 343 {
 344     block_ptr = ALIGN (block_ptr, int);
 345     *(int *)block_ptr = biggest_known_ntypes;
 346     block_ptr = (int *) block_ptr + 1;
 347     block_ptr = ALIGN (block_ptr, char);
 348     biggest_ptr = block_ptr;
 349     block_ptr = (char *) block_ptr + biggest_known_count;
 350     return block_ptr;
 351 }
 352
 353 void
 354 FcObjectSerialize (void)
 355 {
 356     int i;
 357     for (i = 0; i < biggest_known_ntypes; i++)
 358     {
 359         const char * t = biggest_known_types[i].object;
 360         strcpy (biggest_ptr, t);
 361         biggest_ptr = biggest_ptr + strlen(t) + 1;
 362     }
 363 }
 364
 365 void *
 366 FcObjectUnserialize (FcCache * metadata, void *block_ptr)
 367 {
 368     int new_biggest;
 369     block_ptr = ALIGN (block_ptr, int);
 370     new_biggest = *(int *)block_ptr;
 371     block_ptr = (int *) block_ptr + 1;
 372     if (biggest_known_ntypes < new_biggest)
 373     {
 374         int i;
 375         char * bp = (char *)block_ptr;
 376         FcObjectType * bn;
 377
 378         bn = malloc (sizeof (const FcObjectType) * (new_biggest + 1));
 379         if (!bn)
 380             return 0;
 381
 382         for (i = 0; i < new_biggest; i++)
 383         {
 384             const FcObjectType * t = FcNameGetObjectType(bp);
 385             if (t)
 386                 bn[i].type = t->type;
 387             else
 388                 bn[i].type = FcTypeVoid;
 389             bn[i].object = bp;
 390             bp = bp + strlen(bp) + 1;
 391         }
 392
 393         FcNameUnregisterObjectTypesFree (biggest_known_types, biggest_known_ntypes, FcFalse);
 394         if (allocated_biggest_known_types)
 395         {
 396             free ((FcObjectTypeList *)biggest_known_types);
 397         }
 398         else
 399             allocated_biggest_known_types = FcTrue;
 400
 401         FcNameRegisterObjectTypes (bn, new_biggest);
 402         biggest_known_ntypes = new_biggest;
 403         biggest_known_types = (const FcObjectType *)bn;
 404     }
 405     block_ptr = ALIGN (block_ptr, char);
 406     block_ptr = (char *) block_ptr + biggest_known_count;
 407     return block_ptr;
 408 }
 409
 410 static const FcConstant _FcBaseConstants[] = {
 411     { (FcChar8 *) "thin",           "weight",   FC_WEIGHT_THIN, },
 412     { (FcChar8 *) "extralight",     "weight",   FC_WEIGHT_EXTRALIGHT, },
 413     { (FcChar8 *) "ultralight",     "weight",   FC_WEIGHT_EXTRALIGHT, },
 414     { (FcChar8 *) "light",          "weight",   FC_WEIGHT_LIGHT, },
 415     { (FcChar8 *) "book",           "weight",   FC_WEIGHT_BOOK, },
 416     { (FcChar8 *) "regular",        "weight",   FC_WEIGHT_REGULAR, },
 417     { (FcChar8 *) "medium",         "weight",   FC_WEIGHT_MEDIUM, },
 418     { (FcChar8 *) "demibold",       "weight",   FC_WEIGHT_DEMIBOLD, },
 419     { (FcChar8 *) "semibold",       "weight",   FC_WEIGHT_DEMIBOLD, },
 420     { (FcChar8 *) "bold",           "weight",   FC_WEIGHT_BOLD, },
 421     { (FcChar8 *) "extrabold",      "weight",   FC_WEIGHT_EXTRABOLD, },
 422     { (FcChar8 *) "ultrabold",      "weight",   FC_WEIGHT_EXTRABOLD, },
 423     { (FcChar8 *) "black",          "weight",   FC_WEIGHT_BLACK, },
 424
 425     { (FcChar8 *) "roman",          "slant",    FC_SLANT_ROMAN, },
 426     { (FcChar8 *) "italic",         "slant",    FC_SLANT_ITALIC, },
 427     { (FcChar8 *) "oblique",        "slant",    FC_SLANT_OBLIQUE, },
 428
 429     { (FcChar8 *) "ultracondensed", "width",    FC_WIDTH_ULTRACONDENSED },
 430     { (FcChar8 *) "extracondensed", "width",    FC_WIDTH_EXTRACONDENSED },
 431     { (FcChar8 *) "condensed",      "width",    FC_WIDTH_CONDENSED },
 432     { (FcChar8 *) "semicondensed", "width",     FC_WIDTH_SEMICONDENSED },
 433     { (FcChar8 *) "normal",         "width",    FC_WIDTH_NORMAL },
 434     { (FcChar8 *) "semiexpanded",   "width",    FC_WIDTH_SEMIEXPANDED },
 435     { (FcChar8 *) "expanded",       "width",    FC_WIDTH_EXPANDED },
 436     { (FcChar8 *) "extraexpanded",  "width",    FC_WIDTH_EXTRAEXPANDED },
 437     { (FcChar8 *) "ultraexpanded",  "width",    FC_WIDTH_ULTRAEXPANDED },
 438
 439     { (FcChar8 *) "proportional",   "spacing",  FC_PROPORTIONAL, },
 440     { (FcChar8 *) "dual",           "spacing",  FC_DUAL, },
 441     { (FcChar8 *) "mono",           "spacing",  FC_MONO, },
 442     { (FcChar8 *) "charcell",       "spacing",  FC_CHARCELL, },
 443
 444     { (FcChar8 *) "unknown",        "rgba",         FC_RGBA_UNKNOWN },
 445     { (FcChar8 *) "rgb",            "rgba",         FC_RGBA_RGB, },
 446     { (FcChar8 *) "bgr",            "rgba",         FC_RGBA_BGR, },
 447     { (FcChar8 *) "vrgb",           "rgba",         FC_RGBA_VRGB },
 448     { (FcChar8 *) "vbgr",           "rgba",         FC_RGBA_VBGR },
 449     { (FcChar8 *) "none",           "rgba",         FC_RGBA_NONE },
 450
 451     { (FcChar8 *) "hintnone",       "hintstyle",   FC_HINT_NONE },
 452     { (FcChar8 *) "hintslight",     "hintstyle",   FC_HINT_SLIGHT },
 453     { (FcChar8 *) "hintmedium",     "hintstyle",   FC_HINT_MEDIUM },
 454     { (FcChar8 *) "hintfull",       "hintstyle",   FC_HINT_FULL },
 455 };
 456
 457 #define NUM_FC_CONSTANTS   (sizeof _FcBaseConstants/sizeof _FcBaseConstants[0])
 458
 459 typedef struct _FcConstantList FcConstantList;
 460
 461 struct _FcConstantList {
 462     const FcConstantList    *next;
 463     const FcConstant        *consts;
 464     int                     nconsts;
 465 };
 466
 467 static const FcConstantList _FcBaseConstantList = {
 468     0,
 469     _FcBaseConstants,
 470     NUM_FC_CONSTANTS
 471 };
 472
 473 static const FcConstantList     *_FcConstants = &_FcBaseConstantList;
 474
 475 FcBool
 476 FcNameRegisterConstants (const FcConstant *consts, int nconsts)
 477 {
 478     FcConstantList      *l;
 479
 480     l = (FcConstantList *) malloc (sizeof (FcConstantList));
 481     if (!l)
 482         return FcFalse;
 483     FcMemAlloc (FC_MEM_CONSTANT, sizeof (FcConstantList));
 484     l->consts = consts;
 485     l->nconsts = nconsts;
 486     l->next = _FcConstants;
 487     _FcConstants = l;
 488     return FcTrue;
 489 }
 490
 491 FcBool
 492 FcNameUnregisterConstants (const FcConstant *consts, int nconsts)
 493 {
 494     const FcConstantList        *l, **prev;
 495
 496     for (prev = &_FcConstants;
 497          (l = *prev);
 498          prev = (const FcConstantList **) &(l->next))
 499     {
 500         if (l->consts == consts && l->nconsts == nconsts)
 501         {
 502             *prev = l->next;
 503             FcMemFree (FC_MEM_CONSTANT, sizeof (FcConstantList));
 504             free ((void *) l);
 505             return FcTrue;
 506         }
 507     }
 508     return FcFalse;
 509 }
 510
 511 const FcConstant *
 512 FcNameGetConstant (FcChar8 *string)
 513 {
 514     const FcConstantList    *l;
 515     int                     i;
 516
 517     for (l = _FcConstants; l; l = l->next)
 518     {
 519         for (i = 0; i < l->nconsts; i++)
 520             if (!FcStrCmpIgnoreCase (string, l->consts[i].name))
 521                 return &l->consts[i];
 522     }
 523     return 0;
 524 }
 525
 526 FcBool
 527 FcNameConstant (FcChar8 *string, int *result)
 528 {
 529     const FcConstant    *c;
 530
 531     if ((c = FcNameGetConstant(string)))
 532     {
 533         *result = c->value;
 534         return FcTrue;
 535     }
 536     return FcFalse;
 537 }
 538
 539 FcBool
 540 FcNameBool (const FcChar8 *v, FcBool *result)
 541 {
 542     char    c0, c1;
 543
 544     c0 = *v;
 545     c0 = FcToLower (c0);
 546     if (c0 == 't' || c0 == 'y' || c0 == '1')
 547     {
 548         *result = FcTrue;
 549         return FcTrue;
 550     }
 551     if (c0 == 'f' || c0 == 'n' || c0 == '0')
 552     {
 553         *result = FcFalse;
 554         return FcTrue;
 555     }
 556     if (c0 == 'o')
 557     {
 558         c1 = v[1];
 559         c1 = FcToLower (c1);
 560         if (c1 == 'n')
 561         {
 562             *result = FcTrue;
 563             return FcTrue;
 564         }
 565         if (c1 == 'f')
 566         {
 567             *result = FcFalse;
 568             return FcTrue;
 569         }
 570     }
 571     return FcFalse;
 572 }
 573
 574 static FcValue
 575 FcNameConvert (FcType type, FcChar8 *string, FcMatrix *m)
 576 {
 577     FcValue     v;
 578
 579     v.type = type;
 580     switch (v.type) {
 581     case FcTypeInteger:
 582         if (!FcNameConstant (string, &v.u.i))
 583             v.u.i = atoi ((char *) string);
 584         break;
 585     case FcTypeString:
 586         v.u.s = FcStrStaticName(string);
 587         break;
 588     case FcTypeBool:
 589         if (!FcNameBool (string, &v.u.b))
 590             v.u.b = FcFalse;
 591         break;
 592     case FcTypeDouble:
 593         v.u.d = strtod ((char *) string, 0);
 594         break;
 595     case FcTypeMatrix:
 596         v.u.m = m;
 597         sscanf ((char *) string, "%lg %lg %lg %lg", &m->xx, &m->xy, &m->yx, &m->yy);
 598         break;
 599     case FcTypeCharSet:
 600         v.u.c = FcNameParseCharSet (string);
 601         break;
 602     case FcTypeLangSet:
 603         v.u.l = FcNameParseLangSet (string);
 604         break;
 605     default:
 606         break;
 607     }
 608     return v;
 609 }
 610
 611 static const FcChar8 *
 612 FcNameFindNext (const FcChar8 *cur, const char *delim, FcChar8 *save, FcChar8 *last)
 613 {
 614     FcChar8    c;
 615
 616     while ((c = *cur))
 617     {
 618         if (c == '\\')
 619         {
 620             ++cur;
 621             if (!(c = *cur))
 622                 break;
 623         }
 624         else if (strchr (delim, c))
 625             break;
 626         ++cur;
 627         *save++ = c;
 628     }
 629     *save = 0;
 630     *last = *cur;
 631     if (*cur)
 632         cur++;
 633     return cur;
 634 }
 635
 636 FcPattern *
 637 FcNameParse (const FcChar8 *name)
 638 {
 639     FcChar8             *save;
 640     FcPattern           *pat;
 641     double              d;
 642     FcChar8             *e;
 643     FcChar8             delim;
 644     FcValue             v;
 645     FcMatrix            m;
 646     const FcObjectType  *t;
 647     const FcConstant    *c;
 648
 649     /* freed below */
 650     save = malloc (strlen ((char *) name) + 1);
 651     if (!save)
 652         goto bail0;
 653     pat = FcPatternCreate ();
 654     if (!pat)
 655         goto bail1;
 656
 657     for (;;)
 658     {
 659         name = FcNameFindNext (name, "-,:", save, &delim);
 660         if (save[0])
 661         {
 662             if (!FcPatternAddString (pat, FC_FAMILY, save))
 663                 goto bail2;
 664         }
 665         if (delim != ',')
 666             break;
 667     }
 668     if (delim == '-')
 669     {
 670         for (;;)
 671         {
 672             name = FcNameFindNext (name, "-,:", save, &delim);
 673             d = strtod ((char *) save, (char **) &e);
 674             if (e != save)
 675             {
 676                 if (!FcPatternAddDouble (pat, FC_SIZE, d))
 677                     goto bail2;
 678             }
 679             if (delim != ',')
 680                 break;
 681         }
 682     }
 683     while (delim == ':')
 684     {
 685         name = FcNameFindNext (name, "=_:", save, &delim);
 686         if (save[0])
 687         {
 688             if (delim == '=' || delim == '_')
 689             {
 690                 t = FcNameGetObjectType ((char *) save);
 691                 for (;;)
 692                 {
 693                     name = FcNameFindNext (name, ":,", save, &delim);
 694                     if (t && strcmp (t->object, _FcBaseObjectTypes[0].object))
 695                     {
 696                         v = FcNameConvert (t->type, save, &m);
 697                         if (!FcPatternAdd (pat, t->object, v, FcTrue))
 698                         {
 699                             switch (v.type) {
 700                             case FcTypeCharSet:
 701                                 FcCharSetDestroy ((FcCharSet *) v.u.c);
 702                                 break;
 703                             case FcTypeLangSet:
 704                                 FcLangSetDestroy ((FcLangSet *) v.u.l);
 705                                 break;
 706                             default:
 707                                 break;
 708                             }
 709                             goto bail2;
 710                         }
 711                         switch (v.type) {
 712                         case FcTypeCharSet:
 713                             FcCharSetDestroy ((FcCharSet *) v.u.c);
 714                             break;
 715                         case FcTypeLangSet:
 716                             FcLangSetDestroy ((FcLangSet *) v.u.l);
 717                             break;
 718                         default:
 719                             break;
 720                         }
 721                     }
 722                     if (delim != ',')
 723                         break;
 724                 }
 725             }
 726             else
 727             {
 728                 if ((c = FcNameGetConstant (save)))
 729                 {
 730                     if (!FcPatternAddInteger (pat, c->object, c->value))
 731                         goto bail2;
 732                 }
 733             }
 734         }
 735     }
 736
 737     free (save);
 738     return pat;
 739
 740 bail2:
 741     FcPatternDestroy (pat);
 742 bail1:
 743     free (save);
 744 bail0:
 745     return 0;
 746 }
 747 static FcBool
 748 FcNameUnparseString (FcStrBuf       *buf,
 749                      const FcChar8  *string,
 750                      const FcChar8  *escape)
 751 {
 752     FcChar8 c;
 753     while ((c = *string++))
 754     {
 755         if (escape && strchr ((char *) escape, (char) c))
 756         {
 757             if (!FcStrBufChar (buf, escape[0]))
 758                 return FcFalse;
 759         }
 760         if (!FcStrBufChar (buf, c))
 761             return FcFalse;
 762     }
 763     return FcTrue;
 764 }
 765
 766 static FcBool
 767 FcNameUnparseValue (FcStrBuf    *buf,
 768                     FcValue     *v0,
 769                     FcChar8     *escape)
 770 {
 771     FcChar8     temp[1024];
 772     FcValue v = FcValueCanonicalize(v0);
 773
 774     switch (v.type) {
 775     case FcTypeVoid:
 776         return FcTrue;
 777     case FcTypeInteger:
 778         sprintf ((char *) temp, "%d", v.u.i);
 779         return FcNameUnparseString (buf, temp, 0);
 780     case FcTypeDouble:
 781         sprintf ((char *) temp, "%g", v.u.d);
 782         return FcNameUnparseString (buf, temp, 0);
 783     case FcTypeString:
 784         return FcNameUnparseString (buf, v.u.s, escape);
 785     case FcTypeBool:
 786         return FcNameUnparseString (buf, v.u.b ? (FcChar8 *) "True" : (FcChar8 *) "False", 0);
 787     case FcTypeMatrix:
 788         sprintf ((char *) temp, "%g %g %g %g",
 789                  v.u.m->xx, v.u.m->xy, v.u.m->yx, v.u.m->yy);
 790         return FcNameUnparseString (buf, temp, 0);
 791     case FcTypeCharSet:
 792         return FcNameUnparseCharSet (buf, v.u.c);
 793     case FcTypeLangSet:
 794         return FcNameUnparseLangSet (buf, v.u.l);
 795     case FcTypeFTFace:
 796         return FcTrue;
 797     }
 798     return FcFalse;
 799 }
 800
 801 static FcBool
 802 FcNameUnparseValueList (FcStrBuf        *buf,
 803                         FcValueListPtr  v,
 804                         FcChar8         *escape)
 805 {
 806     while (FcValueListPtrU(v))
 807     {
 808         if (!FcNameUnparseValue (buf, &FcValueListPtrU(v)->value, escape))
 809             return FcFalse;
 810         if (FcValueListPtrU(v = FcValueListPtrU(v)->next))
 811             if (!FcNameUnparseString (buf, (FcChar8 *) ",", 0))
 812                 return FcFalse;
 813     }
 814     return FcTrue;
 815 }
 816
 817 #define FC_ESCAPE_FIXED    "\\-:,"
 818 #define FC_ESCAPE_VARIABLE "\\=_:,"
 819
 820 FcChar8 *
 821 FcNameUnparse (FcPattern *pat)
 822 {
 823     return FcNameUnparseEscaped (pat, FcTrue);
 824 }
 825
 826 FcChar8 *
 827 FcNameUnparseEscaped (FcPattern *pat, FcBool escape)
 828 {
 829     FcStrBuf                buf;
 830     FcChar8                 buf_static[8192];
 831     int                     i;
 832     FcPatternElt            *e;
 833     const FcObjectTypeList  *l;
 834     const FcObjectType      *o;
 835
 836     FcStrBufInit (&buf, buf_static, sizeof (buf_static));
 837     e = FcPatternFindElt (pat, FC_FAMILY);
 838     if (e)
 839     {
 840         if (!FcNameUnparseValueList (&buf, e->values, escape ? (FcChar8 *) FC_ESCAPE_FIXED : 0))
 841             goto bail0;
 842     }
 843     e = FcPatternFindElt (pat, FC_SIZE);
 844     if (e)
 845     {
 846         if (!FcNameUnparseString (&buf, (FcChar8 *) "-", 0))
 847             goto bail0;
 848         if (!FcNameUnparseValueList (&buf, e->values, escape ? (FcChar8 *) FC_ESCAPE_FIXED : 0))
 849             goto bail0;
 850     }
 851     for (l = _FcObjectTypes; l; l = l->next)
 852     {
 853         for (i = 0; i < l->ntypes; i++)
 854         {
 855             o = &l->types[i];
 856             if (!strcmp (o->object, FC_FAMILY) ||
 857                 !strcmp (o->object, FC_SIZE) ||
 858                 !strcmp (o->object, FC_FILE))
 859                 continue;
 860
 861             e = FcPatternFindElt (pat, o->object);
 862             if (e)
 863             {
 864                 if (!FcNameUnparseString (&buf, (FcChar8 *) ":", 0))
 865                     goto bail0;
 866                 if (!FcNameUnparseString (&buf, (FcChar8 *) o->object, escape ? (FcChar8 *) FC_ESCAPE_VARIABLE : 0))
 867                     goto bail0;
 868                 if (!FcNameUnparseString (&buf, (FcChar8 *) "=", 0))
 869                     goto bail0;
 870                 if (!FcNameUnparseValueList (&buf, e->values, escape ?
 871                                              (FcChar8 *) FC_ESCAPE_VARIABLE : 0))
 872                     goto bail0;
 873             }
 874         }
 875     }
 876     return FcStrBufDone (&buf);
 877 bail0:
 878     FcStrBufDestroy (&buf);
 879     return 0;
 880 }