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     block_ptr = ALIGN (block_ptr, int);
 377     new_biggest = *(int *)block_ptr;
 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
 385         bn = malloc (sizeof (const FcObjectType) * (new_biggest + 1));
 386         if (!bn)
 387             return 0;
 388
 389         for (i = 0; i < new_biggest; i++)
 390         {
 391             const FcObjectType * t = FcNameGetObjectType(bp);
 392             if (t)
 393                 bn[i].type = t->type;
 394             else
 395                 bn[i].type = FcTypeVoid;
 396             bn[i].object = bp;
 397             bp = bp + strlen(bp) + 1;
 398         }
 399
 400         FcNameUnregisterObjectTypesFree (biggest_known_types, biggest_known_ntypes, FcFalse);
 401         if (allocated_biggest_known_types)
 402         {
 403             free ((FcObjectTypeList *)biggest_known_types);
 404         }
 405         else
 406             allocated_biggest_known_types = FcTrue;
 407
 408         FcNameRegisterObjectTypes (bn, new_biggest);
 409         biggest_known_ntypes = new_biggest;
 410         biggest_known_types = (const FcObjectType *)bn;
 411     }
 412     block_ptr = ALIGN (block_ptr, char);
 413     block_ptr = (char *) block_ptr + biggest_known_count;
 414     return block_ptr;
 415 }
 416
 417 static const FcConstant _FcBaseConstants[] = {
 418     { (FcChar8 *) "thin",           "weight",   FC_WEIGHT_THIN, },
 419     { (FcChar8 *) "extralight",     "weight",   FC_WEIGHT_EXTRALIGHT, },
 420     { (FcChar8 *) "ultralight",     "weight",   FC_WEIGHT_EXTRALIGHT, },
 421     { (FcChar8 *) "light",          "weight",   FC_WEIGHT_LIGHT, },
 422     { (FcChar8 *) "book",           "weight",   FC_WEIGHT_BOOK, },
 423     { (FcChar8 *) "regular",        "weight",   FC_WEIGHT_REGULAR, },
 424     { (FcChar8 *) "medium",         "weight",   FC_WEIGHT_MEDIUM, },
 425     { (FcChar8 *) "demibold",       "weight",   FC_WEIGHT_DEMIBOLD, },
 426     { (FcChar8 *) "semibold",       "weight",   FC_WEIGHT_DEMIBOLD, },
 427     { (FcChar8 *) "bold",           "weight",   FC_WEIGHT_BOLD, },
 428     { (FcChar8 *) "extrabold",      "weight",   FC_WEIGHT_EXTRABOLD, },
 429     { (FcChar8 *) "ultrabold",      "weight",   FC_WEIGHT_EXTRABOLD, },
 430     { (FcChar8 *) "black",          "weight",   FC_WEIGHT_BLACK, },
 431
 432     { (FcChar8 *) "roman",          "slant",    FC_SLANT_ROMAN, },
 433     { (FcChar8 *) "italic",         "slant",    FC_SLANT_ITALIC, },
 434     { (FcChar8 *) "oblique",        "slant",    FC_SLANT_OBLIQUE, },
 435
 436     { (FcChar8 *) "ultracondensed", "width",    FC_WIDTH_ULTRACONDENSED },
 437     { (FcChar8 *) "extracondensed", "width",    FC_WIDTH_EXTRACONDENSED },
 438     { (FcChar8 *) "condensed",      "width",    FC_WIDTH_CONDENSED },
 439     { (FcChar8 *) "semicondensed", "width",     FC_WIDTH_SEMICONDENSED },
 440     { (FcChar8 *) "normal",         "width",    FC_WIDTH_NORMAL },
 441     { (FcChar8 *) "semiexpanded",   "width",    FC_WIDTH_SEMIEXPANDED },
 442     { (FcChar8 *) "expanded",       "width",    FC_WIDTH_EXPANDED },
 443     { (FcChar8 *) "extraexpanded",  "width",    FC_WIDTH_EXTRAEXPANDED },
 444     { (FcChar8 *) "ultraexpanded",  "width",    FC_WIDTH_ULTRAEXPANDED },
 445
 446     { (FcChar8 *) "proportional",   "spacing",  FC_PROPORTIONAL, },
 447     { (FcChar8 *) "dual",           "spacing",  FC_DUAL, },
 448     { (FcChar8 *) "mono",           "spacing",  FC_MONO, },
 449     { (FcChar8 *) "charcell",       "spacing",  FC_CHARCELL, },
 450
 451     { (FcChar8 *) "unknown",        "rgba",         FC_RGBA_UNKNOWN },
 452     { (FcChar8 *) "rgb",            "rgba",         FC_RGBA_RGB, },
 453     { (FcChar8 *) "bgr",            "rgba",         FC_RGBA_BGR, },
 454     { (FcChar8 *) "vrgb",           "rgba",         FC_RGBA_VRGB },
 455     { (FcChar8 *) "vbgr",           "rgba",         FC_RGBA_VBGR },
 456     { (FcChar8 *) "none",           "rgba",         FC_RGBA_NONE },
 457
 458     { (FcChar8 *) "hintnone",       "hintstyle",   FC_HINT_NONE },
 459     { (FcChar8 *) "hintslight",     "hintstyle",   FC_HINT_SLIGHT },
 460     { (FcChar8 *) "hintmedium",     "hintstyle",   FC_HINT_MEDIUM },
 461     { (FcChar8 *) "hintfull",       "hintstyle",   FC_HINT_FULL },
 462 };
 463
 464 #define NUM_FC_CONSTANTS   (sizeof _FcBaseConstants/sizeof _FcBaseConstants[0])
 465
 466 typedef struct _FcConstantList FcConstantList;
 467
 468 struct _FcConstantList {
 469     const FcConstantList    *next;
 470     const FcConstant        *consts;
 471     int                     nconsts;
 472 };
 473
 474 static const FcConstantList _FcBaseConstantList = {
 475     0,
 476     _FcBaseConstants,
 477     NUM_FC_CONSTANTS
 478 };
 479
 480 static const FcConstantList     *_FcConstants = &_FcBaseConstantList;
 481
 482 FcBool
 483 FcNameRegisterConstants (const FcConstant *consts, int nconsts)
 484 {
 485     FcConstantList      *l;
 486
 487     l = (FcConstantList *) malloc (sizeof (FcConstantList));
 488     if (!l)
 489         return FcFalse;
 490     FcMemAlloc (FC_MEM_CONSTANT, sizeof (FcConstantList));
 491     l->consts = consts;
 492     l->nconsts = nconsts;
 493     l->next = _FcConstants;
 494     _FcConstants = l;
 495     return FcTrue;
 496 }
 497
 498 FcBool
 499 FcNameUnregisterConstants (const FcConstant *consts, int nconsts)
 500 {
 501     const FcConstantList        *l, **prev;
 502
 503     for (prev = &_FcConstants;
 504          (l = *prev);
 505          prev = (const FcConstantList **) &(l->next))
 506     {
 507         if (l->consts == consts && l->nconsts == nconsts)
 508         {
 509             *prev = l->next;
 510             FcMemFree (FC_MEM_CONSTANT, sizeof (FcConstantList));
 511             free ((void *) l);
 512             return FcTrue;
 513         }
 514     }
 515     return FcFalse;
 516 }
 517
 518 const FcConstant *
 519 FcNameGetConstant (FcChar8 *string)
 520 {
 521     const FcConstantList    *l;
 522     int                     i;
 523
 524     for (l = _FcConstants; l; l = l->next)
 525     {
 526         for (i = 0; i < l->nconsts; i++)
 527             if (!FcStrCmpIgnoreCase (string, l->consts[i].name))
 528                 return &l->consts[i];
 529     }
 530     return 0;
 531 }
 532
 533 FcBool
 534 FcNameConstant (FcChar8 *string, int *result)
 535 {
 536     const FcConstant    *c;
 537
 538     if ((c = FcNameGetConstant(string)))
 539     {
 540         *result = c->value;
 541         return FcTrue;
 542     }
 543     return FcFalse;
 544 }
 545
 546 FcBool
 547 FcNameBool (const FcChar8 *v, FcBool *result)
 548 {
 549     char    c0, c1;
 550
 551     c0 = *v;
 552     c0 = FcToLower (c0);
 553     if (c0 == 't' || c0 == 'y' || c0 == '1')
 554     {
 555         *result = FcTrue;
 556         return FcTrue;
 557     }
 558     if (c0 == 'f' || c0 == 'n' || c0 == '0')
 559     {
 560         *result = FcFalse;
 561         return FcTrue;
 562     }
 563     if (c0 == 'o')
 564     {
 565         c1 = v[1];
 566         c1 = FcToLower (c1);
 567         if (c1 == 'n')
 568         {
 569             *result = FcTrue;
 570             return FcTrue;
 571         }
 572         if (c1 == 'f')
 573         {
 574             *result = FcFalse;
 575             return FcTrue;
 576         }
 577     }
 578     return FcFalse;
 579 }
 580
 581 static FcValue
 582 FcNameConvert (FcType type, FcChar8 *string, FcMatrix *m)
 583 {
 584     FcValue     v;
 585
 586     v.type = type;
 587     switch (v.type) {
 588     case FcTypeInteger:
 589         if (!FcNameConstant (string, &v.u.i))
 590             v.u.i = atoi ((char *) string);
 591         break;
 592     case FcTypeString:
 593         v.u.s = FcStrStaticName(string);
 594         break;
 595     case FcTypeBool:
 596         if (!FcNameBool (string, &v.u.b))
 597             v.u.b = FcFalse;
 598         break;
 599     case FcTypeDouble:
 600         v.u.d = strtod ((char *) string, 0);
 601         break;
 602     case FcTypeMatrix:
 603         v.u.m = m;
 604         sscanf ((char *) string, "%lg %lg %lg %lg", &m->xx, &m->xy, &m->yx, &m->yy);
 605         break;
 606     case FcTypeCharSet:
 607         v.u.c = FcNameParseCharSet (string);
 608         break;
 609     case FcTypeLangSet:
 610         v.u.l = FcNameParseLangSet (string);
 611         break;
 612     default:
 613         break;
 614     }
 615     return v;
 616 }
 617
 618 static const FcChar8 *
 619 FcNameFindNext (const FcChar8 *cur, const char *delim, FcChar8 *save, FcChar8 *last)
 620 {
 621     FcChar8    c;
 622
 623     while ((c = *cur))
 624     {
 625         if (c == '\\')
 626         {
 627             ++cur;
 628             if (!(c = *cur))
 629                 break;
 630         }
 631         else if (strchr (delim, c))
 632             break;
 633         ++cur;
 634         *save++ = c;
 635     }
 636     *save = 0;
 637     *last = *cur;
 638     if (*cur)
 639         cur++;
 640     return cur;
 641 }
 642
 643 FcPattern *
 644 FcNameParse (const FcChar8 *name)
 645 {
 646     FcChar8             *save;
 647     FcPattern           *pat;
 648     double              d;
 649     FcChar8             *e;
 650     FcChar8             delim;
 651     FcValue             v;
 652     FcMatrix            m;
 653     const FcObjectType  *t;
 654     const FcConstant    *c;
 655
 656     /* freed below */
 657     save = malloc (strlen ((char *) name) + 1);
 658     if (!save)
 659         goto bail0;
 660     pat = FcPatternCreate ();
 661     if (!pat)
 662         goto bail1;
 663
 664     for (;;)
 665     {
 666         name = FcNameFindNext (name, "-,:", save, &delim);
 667         if (save[0])
 668         {
 669             if (!FcPatternAddString (pat, FC_FAMILY, save))
 670                 goto bail2;
 671         }
 672         if (delim != ',')
 673             break;
 674     }
 675     if (delim == '-')
 676     {
 677         for (;;)
 678         {
 679             name = FcNameFindNext (name, "-,:", save, &delim);
 680             d = strtod ((char *) save, (char **) &e);
 681             if (e != save)
 682             {
 683                 if (!FcPatternAddDouble (pat, FC_SIZE, d))
 684                     goto bail2;
 685             }
 686             if (delim != ',')
 687                 break;
 688         }
 689     }
 690     while (delim == ':')
 691     {
 692         name = FcNameFindNext (name, "=_:", save, &delim);
 693         if (save[0])
 694         {
 695             if (delim == '=' || delim == '_')
 696             {
 697                 t = FcNameGetObjectType ((char *) save);
 698                 for (;;)
 699                 {
 700                     name = FcNameFindNext (name, ":,", save, &delim);
 701                     if (t && strcmp (t->object, _FcBaseObjectTypes[0].object))
 702                     {
 703                         v = FcNameConvert (t->type, save, &m);
 704                         if (!FcPatternAdd (pat, t->object, v, FcTrue))
 705                         {
 706                             switch (v.type) {
 707                             case FcTypeCharSet:
 708                                 FcCharSetDestroy ((FcCharSet *) v.u.c);
 709                                 break;
 710                             case FcTypeLangSet:
 711                                 FcLangSetDestroy ((FcLangSet *) v.u.l);
 712                                 break;
 713                             default:
 714                                 break;
 715                             }
 716                             goto bail2;
 717                         }
 718                         switch (v.type) {
 719                         case FcTypeCharSet:
 720                             FcCharSetDestroy ((FcCharSet *) v.u.c);
 721                             break;
 722                         case FcTypeLangSet:
 723                             FcLangSetDestroy ((FcLangSet *) v.u.l);
 724                             break;
 725                         default:
 726                             break;
 727                         }
 728                     }
 729                     if (delim != ',')
 730                         break;
 731                 }
 732             }
 733             else
 734             {
 735                 if ((c = FcNameGetConstant (save)))
 736                 {
 737                     if (!FcPatternAddInteger (pat, c->object, c->value))
 738                         goto bail2;
 739                 }
 740             }
 741         }
 742     }
 743
 744     free (save);
 745     return pat;
 746
 747 bail2:
 748     FcPatternDestroy (pat);
 749 bail1:
 750     free (save);
 751 bail0:
 752     return 0;
 753 }
 754 static FcBool
 755 FcNameUnparseString (FcStrBuf       *buf,
 756                      const FcChar8  *string,
 757                      const FcChar8  *escape)
 758 {
 759     FcChar8 c;
 760     while ((c = *string++))
 761     {
 762         if (escape && strchr ((char *) escape, (char) c))
 763         {
 764             if (!FcStrBufChar (buf, escape[0]))
 765                 return FcFalse;
 766         }
 767         if (!FcStrBufChar (buf, c))
 768             return FcFalse;
 769     }
 770     return FcTrue;
 771 }
 772
 773 static FcBool
 774 FcNameUnparseValue (FcStrBuf    *buf,
 775                     FcValue     *v0,
 776                     FcChar8     *escape)
 777 {
 778     FcChar8     temp[1024];
 779     FcValue v = FcValueCanonicalize(v0);
 780
 781     switch (v.type) {
 782     case FcTypeVoid:
 783         return FcTrue;
 784     case FcTypeInteger:
 785         sprintf ((char *) temp, "%d", v.u.i);
 786         return FcNameUnparseString (buf, temp, 0);
 787     case FcTypeDouble:
 788         sprintf ((char *) temp, "%g", v.u.d);
 789         return FcNameUnparseString (buf, temp, 0);
 790     case FcTypeString:
 791         return FcNameUnparseString (buf, v.u.s, escape);
 792     case FcTypeBool:
 793         return FcNameUnparseString (buf, v.u.b ? (FcChar8 *) "True" : (FcChar8 *) "False", 0);
 794     case FcTypeMatrix:
 795         sprintf ((char *) temp, "%g %g %g %g",
 796                  v.u.m->xx, v.u.m->xy, v.u.m->yx, v.u.m->yy);
 797         return FcNameUnparseString (buf, temp, 0);
 798     case FcTypeCharSet:
 799         return FcNameUnparseCharSet (buf, v.u.c);
 800     case FcTypeLangSet:
 801         return FcNameUnparseLangSet (buf, v.u.l);
 802     case FcTypeFTFace:
 803         return FcTrue;
 804     }
 805     return FcFalse;
 806 }
 807
 808 static FcBool
 809 FcNameUnparseValueList (FcStrBuf        *buf,
 810                         FcValueListPtr  v,
 811                         FcChar8         *escape)
 812 {
 813     while (FcValueListPtrU(v))
 814     {
 815         if (!FcNameUnparseValue (buf, &FcValueListPtrU(v)->value, escape))
 816             return FcFalse;
 817         if (FcValueListPtrU(v = FcValueListPtrU(v)->next))
 818             if (!FcNameUnparseString (buf, (FcChar8 *) ",", 0))
 819                 return FcFalse;
 820     }
 821     return FcTrue;
 822 }
 823
 824 #define FC_ESCAPE_FIXED    "\\-:,"
 825 #define FC_ESCAPE_VARIABLE "\\=_:,"
 826
 827 FcChar8 *
 828 FcNameUnparse (FcPattern *pat)
 829 {
 830     return FcNameUnparseEscaped (pat, FcTrue);
 831 }
 832
 833 FcChar8 *
 834 FcNameUnparseEscaped (FcPattern *pat, FcBool escape)
 835 {
 836     FcStrBuf                buf;
 837     FcChar8                 buf_static[8192];
 838     int                     i;
 839     FcPatternElt            *e;
 840     const FcObjectTypeList  *l;
 841     const FcObjectType      *o;
 842
 843     FcStrBufInit (&buf, buf_static, sizeof (buf_static));
 844     e = FcPatternFindElt (pat, FC_FAMILY);
 845     if (e)
 846     {
 847         if (!FcNameUnparseValueList (&buf, e->values, escape ? (FcChar8 *) FC_ESCAPE_FIXED : 0))
 848             goto bail0;
 849     }
 850     e = FcPatternFindElt (pat, FC_SIZE);
 851     if (e)
 852     {
 853         if (!FcNameUnparseString (&buf, (FcChar8 *) "-", 0))
 854             goto bail0;
 855         if (!FcNameUnparseValueList (&buf, e->values, escape ? (FcChar8 *) FC_ESCAPE_FIXED : 0))
 856             goto bail0;
 857     }
 858     for (l = _FcObjectTypes; l; l = l->next)
 859     {
 860         for (i = 0; i < l->ntypes; i++)
 861         {
 862             o = &l->types[i];
 863             if (!strcmp (o->object, FC_FAMILY) ||
 864                 !strcmp (o->object, FC_SIZE) ||
 865                 !strcmp (o->object, FC_FILE))
 866                 continue;
 867
 868             e = FcPatternFindElt (pat, o->object);
 869             if (e)
 870             {
 871                 if (!FcNameUnparseString (&buf, (FcChar8 *) ":", 0))
 872                     goto bail0;
 873                 if (!FcNameUnparseString (&buf, (FcChar8 *) o->object, escape ? (FcChar8 *) FC_ESCAPE_VARIABLE : 0))
 874                     goto bail0;
 875                 if (!FcNameUnparseString (&buf, (FcChar8 *) "=", 0))
 876                     goto bail0;
 877                 if (!FcNameUnparseValueList (&buf, e->values, escape ?
 878                                              (FcChar8 *) FC_ESCAPE_VARIABLE : 0))
 879                     goto bail0;
 880             }
 881         }
 882     }
 883     return FcStrBufDone (&buf);
 884 bail0:
 885     FcStrBufDestroy (&buf);
 886     return 0;
 887 }