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