dlls/wineps.drv/type1afm.c

   1 /*******************************************************************************
   2  *  Adobe Font Metric (AFM) file parsing functions for Wine PostScript driver.
   3  *  See http://partners.adobe.com/asn/developer/pdfs/tn/5004.AFM_Spec.pdf.
   4  *
   5  *  Copyright 2001  Ian Pilcher
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  *
  21  *  NOTE:  Many of the functions in this file can return either fatal errors
  22  *      (memory allocation failure) or non-fatal errors (unusable AFM file).
  23  *      Fatal errors are indicated by returning FALSE; see individual function
  24  *      descriptions for how they indicate non-fatal errors.
  25  *
  26  */
  27
  28 #include "config.h"
  29 #include "wine/port.h"
  30
  31 #include <string.h>
  32 #include <stdlib.h>
  33 #include <stdarg.h>
  34 #include <stdio.h>
  35 #ifdef HAVE_DIRENT_H
  36 # include <dirent.h>
  37 #endif
  38 #include <errno.h>
  39 #include <ctype.h>
  40 #include <limits.h>         /* INT_MIN */
  41
  42 #ifdef HAVE_FLOAT_H
  43 #include <float.h>          /* FLT_MAX */
  44 #endif
  45
  46 #include "windef.h"
  47 #include "winbase.h"
  48 #include "winerror.h"
  49 #include "winreg.h"
  50 #include "psdrv.h"
  51 #include "wine/debug.h"
  52
  53 WINE_DEFAULT_DEBUG_CHANNEL(psdrv);
  54
  55 /*******************************************************************************
  56  *  ReadLine
  57  *
  58  *  Reads a line from a text file into the buffer and trims trailing whitespace.
  59  *  Can handle DOS and Unix text files, including weird DOS EOF.  Returns FALSE
  60  *  for unexpected I/O errors; otherwise returns TRUE and sets *p_result to
  61  *  either the number of characters in the returned string or one of the
  62  *  following:
  63  *
  64  *      0:          Blank (or all whitespace) line.  This is just a special case
  65  *                  of the normal behavior.
  66  *
  67  *      EOF:        End of file has been reached.
  68  *
  69  *      INT_MIN:    Buffer overflow.  Returned string is truncated (duh!) and
  70  *                  trailing whitespace is *not* trimmed.  Remaining text in
  71  *                  line is discarded.  (I.e. the file pointer is positioned at
  72  *                  the beginning of the next line.)
  73  *
  74  */
  75 static BOOL ReadLine(FILE *file, CHAR buffer[], INT bufsize, INT *p_result)
  76 {
  77      CHAR   *cp;
  78      INT    i;
  79
  80      if (fgets(buffer, bufsize, file) == NULL)
  81      {
  82         if (feof(file) == 0)                            /* EOF or error? */
  83         {
  84             ERR("%s\n", strerror(errno));
  85             return FALSE;
  86         }
  87
  88         *p_result = EOF;
  89         return TRUE;
  90     }
  91
  92     cp = strchr(buffer, '\n');
  93     if (cp == NULL)
  94     {
  95         i = strlen(buffer);
  96
  97         if (i == bufsize - 1)       /* max possible; was line truncated? */
  98         {
  99             do
 100                 i = fgetc(file);                /* find the newline or EOF */
 101             while (i != '\n' && i != EOF);
 102
 103             if (i == EOF)
 104             {
 105                 if (feof(file) == 0)                    /* EOF or error? */
 106                 {
 107                     ERR("%s\n", strerror(errno));
 108                     return FALSE;
 109                 }
 110
 111                 WARN("No newline at EOF\n");
 112             }
 113
 114             *p_result = INT_MIN;
 115             return TRUE;
 116         }
 117         else                            /* no newline and not truncated */
 118         {
 119             if (strcmp(buffer, "\x1a") == 0)        /* test for DOS EOF */
 120             {
 121                 *p_result = EOF;
 122                 return TRUE;
 123             }
 124
 125             WARN("No newline at EOF\n");
 126             cp = buffer + i;    /* points to \0 where \n should have been */
 127         }
 128     }
 129
 130     do
 131     {
 132         *cp = '\0';                             /* trim trailing whitespace */
 133         if (cp == buffer)
 134             break;                              /* don't underflow buffer */
 135         --cp;
 136     }
 137     while (isspace(*cp));
 138
 139     *p_result = strlen(buffer);
 140     return TRUE;
 141 }
 142
 143 /*******************************************************************************
 144  *  FindLine
 145  *
 146  *  Finds a line in the file that begins with the given string.  Returns FALSE
 147  *  for unexpected I/O errors; returns an empty (zero character) string if the
 148  *  requested line is not found.
 149  *
 150  *  NOTE:  The file pointer *MUST* be positioned at the beginning of a line when
 151  *      this function is called.  Otherwise, an infinite loop can result.
 152  *
 153  */
 154 static BOOL FindLine(FILE *file, CHAR buffer[], INT bufsize, LPCSTR key)
 155 {
 156     INT     len = strlen(key);
 157     LONG    start = ftell(file);
 158
 159     do
 160     {
 161         INT     result;
 162         BOOL    ok;
 163
 164         ok = ReadLine(file, buffer, bufsize, &result);
 165         if (ok == FALSE)
 166             return FALSE;
 167
 168         if (result > 0 && strncmp(buffer, key, len) == 0)
 169             return TRUE;
 170
 171         if (result == EOF)
 172         {
 173             rewind(file);
 174         }
 175         else if (result == INT_MIN)
 176         {
 177             WARN("Line beginning '%32s...' is too long; ignoring\n", buffer);
 178         }
 179     }
 180     while (ftell(file) != start);
 181
 182     WARN("Couldn't find line '%s...' in AFM file\n", key);
 183     buffer[0] = '\0';
 184     return TRUE;
 185 }
 186
 187 /*******************************************************************************
 188  *  DoubleToFloat
 189  *
 190  *  Utility function to convert double to float while checking for overflow.
 191  *  Will also catch strtod overflows, since HUGE_VAL > FLT_MAX (at least on
 192  *  Linux x86/gcc).
 193  *
 194  */
 195 static inline BOOL DoubleToFloat(float *p_f, double d)
 196 {
 197     if (d > (double)FLT_MAX || d < -(double)FLT_MAX)
 198         return FALSE;
 199
 200     *p_f = (float)d;
 201     return TRUE;
 202 }
 203
 204 /*******************************************************************************
 205  *  Round
 206  *
 207  *  Utility function to add or subtract 0.5 before converting to integer type.
 208  *
 209  */
 210 static inline float Round(float f)
 211 {
 212     return (f >= 0.0) ? (f + 0.5) : (f - 0.5);
 213 }
 214
 215 /*******************************************************************************
 216  *  ReadFloat
 217  *
 218  *  Finds and parses a line of the form '<key> <value>', where value is a
 219  *  number.  Sets *p_found to FALSE if a corresponding line cannot be found, or
 220  *  it cannot be parsed; also sets *p_ret to 0.0, so calling functions can just
 221  *  skip the check of *p_found if the item is not required.
 222  *
 223  */
 224 static BOOL ReadFloat(FILE *file, CHAR buffer[], INT bufsize, LPCSTR key,
 225         FLOAT *p_ret, BOOL *p_found)
 226 {
 227     CHAR    *cp, *end_ptr;
 228     double  d;
 229
 230     if (FindLine(file, buffer, bufsize, key) == FALSE)
 231         return FALSE;
 232
 233     if (buffer[0] == '\0')          /* line not found */
 234     {
 235         *p_found = FALSE;
 236         *p_ret = 0.0;
 237         return TRUE;
 238     }
 239
 240     cp = buffer + strlen(key);                      /* first char after key */
 241     errno = 0;
 242     d = strtod(cp, &end_ptr);
 243
 244     if (end_ptr == cp || errno != 0 || DoubleToFloat(p_ret, d) == FALSE)
 245     {
 246         WARN("Error parsing line '%s'\n", buffer);
 247         *p_found = FALSE;
 248         *p_ret = 0.0;
 249         return TRUE;
 250     }
 251
 252     *p_found = TRUE;
 253     return TRUE;
 254 }
 255
 256 /*******************************************************************************
 257  *  ReadInt
 258  *
 259  *  See description of ReadFloat.
 260  *
 261  */
 262 static BOOL ReadInt(FILE *file, CHAR buffer[], INT bufsize, LPCSTR key,
 263         INT *p_ret, BOOL *p_found)
 264 {
 265     BOOL    retval;
 266     FLOAT   f;
 267
 268     retval = ReadFloat(file, buffer, bufsize, key, &f, p_found);
 269     if (retval == FALSE || *p_found == FALSE)
 270     {
 271         *p_ret = 0;
 272         return retval;
 273     }
 274
 275     f = Round(f);
 276
 277     if (f > (FLOAT)INT_MAX || f < (FLOAT)INT_MIN)
 278     {
 279         WARN("Error parsing line '%s'\n", buffer);
 280         *p_ret = 0;
 281         *p_found = FALSE;
 282         return TRUE;
 283     }
 284
 285     *p_ret = (INT)f;
 286     return TRUE;
 287 }
 288
 289 /*******************************************************************************
 290  *  ReadString
 291  *
 292  *  Returns FALSE on I/O error or memory allocation failure; sets *p_str to NULL
 293  *  if line cannot be found or can't be parsed.
 294  *
 295  */
 296 static BOOL ReadString(FILE *file, CHAR buffer[], INT bufsize, LPCSTR key,
 297         LPSTR *p_str)
 298 {
 299     CHAR    *cp;
 300
 301     if (FindLine(file, buffer, bufsize, key) == FALSE)
 302         return FALSE;
 303
 304     if (buffer[0] == '\0')
 305     {
 306         *p_str = NULL;
 307         return TRUE;
 308     }
 309
 310     cp = buffer + strlen(key);                      /* first char after key */
 311     if (*cp == '\0')
 312     {
 313         *p_str = NULL;
 314         return TRUE;
 315     }
 316
 317     while (isspace(*cp))                /* find first non-whitespace char */
 318         ++cp;
 319
 320     *p_str = HeapAlloc(PSDRV_Heap, 0, strlen(cp) + 1);
 321     if (*p_str == NULL)
 322         return FALSE;
 323
 324     strcpy(*p_str, cp);
 325     return TRUE;
 326 }
 327
 328 /*******************************************************************************
 329  *  ReadBBox
 330  *
 331  *  Similar to ReadFloat above.
 332  *
 333  */
 334 static BOOL ReadBBox(FILE *file, CHAR buffer[], INT bufsize, AFM *afm,
 335         BOOL *p_found)
 336 {
 337     CHAR    *cp, *end_ptr;
 338     double  d;
 339
 340     if (FindLine(file, buffer, bufsize, "FontBBox") == FALSE)
 341         return FALSE;
 342
 343     if (buffer[0] == '\0')
 344     {
 345         *p_found = FALSE;
 346         return TRUE;
 347     }
 348
 349     errno = 0;
 350
 351     cp = buffer + sizeof("FontBBox");
 352     d = strtod(cp, &end_ptr);
 353     if (end_ptr == cp || errno != 0 ||
 354             DoubleToFloat(&(afm->FontBBox.llx), d) == FALSE)
 355         goto parse_error;
 356
 357     cp = end_ptr;
 358     d = strtod(cp, &end_ptr);
 359     if (end_ptr == cp || errno != 0 ||
 360             DoubleToFloat(&(afm->FontBBox.lly), d) == FALSE)
 361         goto parse_error;
 362
 363     cp = end_ptr;
 364     d = strtod(cp, &end_ptr);
 365     if (end_ptr == cp || errno != 0
 366             || DoubleToFloat(&(afm->FontBBox.urx), d) == FALSE)
 367         goto parse_error;
 368
 369     cp = end_ptr;
 370     d = strtod(cp, &end_ptr);
 371     if (end_ptr == cp || errno != 0
 372             || DoubleToFloat(&(afm->FontBBox.ury), d) == FALSE)
 373         goto parse_error;
 374
 375     *p_found = TRUE;
 376     return TRUE;
 377
 378     parse_error:
 379         WARN("Error parsing line '%s'\n", buffer);
 380         *p_found = FALSE;
 381         return TRUE;
 382 }
 383
 384 /*******************************************************************************
 385  *  ReadWeight
 386  *
 387  *  Finds and parses the 'Weight' line of an AFM file.  Only tries to determine
 388  *  if a font is bold (FW_BOLD) or not (FW_NORMAL) -- ignoring all those cute
 389  *  little FW_* typedefs in the Win32 doc.  AFAICT, this is what the Windows
 390  *  PostScript driver does.
 391  *
 392  */
 393 static const struct { LPCSTR keyword; INT weight; } afm_weights[] =
 394 {
 395     { "REGULAR",        FW_NORMAL },
 396     { "NORMAL",         FW_NORMAL },
 397     { "ROMAN",          FW_NORMAL },
 398     { "BOLD",           FW_BOLD },
 399     { "BOOK",           FW_NORMAL },
 400     { "MEDIUM",         FW_NORMAL },
 401     { "LIGHT",          FW_NORMAL },
 402     { "BLACK",          FW_BOLD },
 403     { "HEAVY",          FW_BOLD },
 404     { "DEMI",           FW_BOLD },
 405     { "ULTRA",          FW_BOLD },
 406     { "SUPER" ,         FW_BOLD },
 407     { NULL,             0 }
 408 };
 409
 410 static BOOL ReadWeight(FILE *file, CHAR buffer[], INT bufsize, AFM *afm,
 411         BOOL *p_found)
 412 {
 413     LPSTR   sz;
 414     CHAR    *cp;
 415     INT     i;
 416
 417     if (ReadString(file, buffer, bufsize, "Weight", &sz) == FALSE)
 418         return FALSE;
 419
 420     if (sz == NULL)
 421     {
 422         *p_found = FALSE;
 423         return TRUE;
 424     }
 425
 426     for (cp = sz; *cp != '\0'; ++cp)
 427         *cp = toupper(*cp);
 428
 429     for (i = 0; afm_weights[i].keyword != NULL; ++i)
 430     {
 431         if (strstr(sz, afm_weights[i].keyword) != NULL)
 432         {
 433             afm->Weight = afm_weights[i].weight;
 434             *p_found = TRUE;
 435             HeapFree(PSDRV_Heap, 0, sz);
 436             return TRUE;
 437         }
 438     }
 439
 440     WARN("Unknown weight '%s'; treating as Roman\n", sz);
 441
 442     afm->Weight = FW_NORMAL;
 443     *p_found = TRUE;
 444     HeapFree(PSDRV_Heap, 0, sz);
 445     return TRUE;
 446 }
 447
 448 /*******************************************************************************
 449  *  ReadFixedPitch
 450  *
 451  */
 452 static BOOL ReadFixedPitch(FILE *file, CHAR buffer[], INT bufsize, AFM *afm,
 453         BOOL *p_found)
 454 {
 455     LPSTR   sz;
 456
 457     if (ReadString(file, buffer, bufsize, "IsFixedPitch", &sz) == FALSE)
 458         return FALSE;
 459
 460     if (sz == NULL)
 461     {
 462         *p_found = FALSE;
 463         return TRUE;
 464     }
 465
 466     if (strcasecmp(sz, "false") == 0)
 467     {
 468         afm->IsFixedPitch = FALSE;
 469         *p_found = TRUE;
 470         HeapFree(PSDRV_Heap, 0, sz);
 471         return TRUE;
 472     }
 473
 474     if (strcasecmp(sz, "true") == 0)
 475     {
 476         afm->IsFixedPitch = TRUE;
 477         *p_found = TRUE;
 478         HeapFree(PSDRV_Heap, 0, sz);
 479         return TRUE;
 480     }
 481
 482     WARN("Can't parse line '%s'\n", buffer);
 483
 484     *p_found = FALSE;
 485     HeapFree(PSDRV_Heap, 0, sz);
 486     return TRUE;
 487 }
 488
 489 /*******************************************************************************
 490  *  ReadFontMetrics
 491  *
 492  *  Allocates space for the AFM on the driver heap and reads basic font metrics.
 493  *  Returns FALSE for memory allocation failure; sets *p_afm to NULL if AFM file
 494  *  is unusable.
 495  *
 496  */
 497 static BOOL ReadFontMetrics(FILE *file, CHAR buffer[], INT bufsize, AFM **p_afm)
 498 {
 499     AFM     *afm;
 500     BOOL    retval, found;
 501
 502     *p_afm = afm = HeapAlloc(PSDRV_Heap, 0, sizeof(*afm));
 503     if (afm == NULL)
 504         return FALSE;
 505
 506     retval = ReadWeight(file, buffer, bufsize, afm, &found);
 507     if (retval == FALSE || found == FALSE)
 508         goto cleanup_afm;
 509
 510     retval = ReadFloat(file, buffer, bufsize, "ItalicAngle",
 511             &(afm->ItalicAngle), &found);
 512     if (retval == FALSE || found == FALSE)
 513         goto cleanup_afm;
 514
 515     retval = ReadFixedPitch(file, buffer, bufsize, afm, &found);
 516     if (retval == FALSE || found == FALSE)
 517         goto cleanup_afm;
 518
 519     retval = ReadBBox(file, buffer, bufsize, afm, &found);
 520     if (retval == FALSE || found == FALSE)
 521         goto cleanup_afm;
 522
 523     retval = ReadFloat(file, buffer, bufsize, "UnderlinePosition",
 524             &(afm->UnderlinePosition), &found);
 525     if (retval == FALSE || found == FALSE)
 526         goto cleanup_afm;
 527
 528     retval = ReadFloat(file, buffer, bufsize, "UnderlineThickness",
 529             &(afm->UnderlineThickness), &found);
 530     if (retval == FALSE || found == FALSE)
 531         goto cleanup_afm;
 532
 533     retval = ReadFloat(file, buffer, bufsize, "Ascender",       /* optional */
 534             &(afm->Ascender), &found);
 535     if (retval == FALSE)
 536         goto cleanup_afm;
 537
 538     retval = ReadFloat(file, buffer, bufsize, "Descender",      /* optional */
 539             &(afm->Descender), &found);
 540     if (retval == FALSE)
 541         goto cleanup_afm;
 542
 543     afm->WinMetrics.usUnitsPerEm = 1000;
 544     afm->WinMetrics.sTypoAscender = (SHORT)Round(afm->Ascender);
 545     afm->WinMetrics.sTypoDescender = (SHORT)Round(afm->Descender);
 546
 547     if (afm->WinMetrics.sTypoAscender == 0)
 548         afm->WinMetrics.sTypoAscender = (SHORT)Round(afm->FontBBox.ury);
 549
 550     if (afm->WinMetrics.sTypoDescender == 0)
 551         afm->WinMetrics.sTypoDescender = (SHORT)Round(afm->FontBBox.lly);
 552
 553     afm->WinMetrics.sTypoLineGap = 1200 -
 554             (afm->WinMetrics.sTypoAscender - afm->WinMetrics.sTypoDescender);
 555     if (afm->WinMetrics.sTypoLineGap < 0)
 556         afm->WinMetrics.sTypoLineGap = 0;
 557
 558     return TRUE;
 559
 560     cleanup_afm:                        /* handle fatal or non-fatal errors */
 561         HeapFree(PSDRV_Heap, 0, afm);
 562         *p_afm = NULL;
 563         return retval;
 564 }
 565
 566 /*******************************************************************************
 567  *  ParseC
 568  *
 569  *  Fatal error:        return FALSE (none defined)
 570  *
 571  *  Non-fatal error:    leave metrics->C set to INT_MAX
 572  *
 573  */
 574 static BOOL ParseC(LPSTR sz, OLD_AFMMETRICS *metrics)
 575 {
 576     int     base = 10;
 577     long    l;
 578     CHAR    *cp, *end_ptr;
 579
 580     cp = sz + 1;
 581
 582     if (*cp == 'H')
 583     {
 584         base = 16;
 585         ++cp;
 586     }
 587
 588     errno = 0;
 589     l = strtol(cp, &end_ptr, base);
 590     if (end_ptr == cp || errno != 0 || l > INT_MAX || l < INT_MIN)
 591     {
 592         WARN("Error parsing character code '%s'\n", sz);
 593         return TRUE;
 594     }
 595
 596     metrics->C = (INT)l;
 597     return TRUE;
 598 }
 599
 600 /*******************************************************************************
 601  *  ParseW
 602  *
 603  *  Fatal error:        return FALSE (none defined)
 604  *
 605  *  Non-fatal error:    leave metrics->WX set to FLT_MAX
 606  *
 607  */
 608 static BOOL ParseW(LPSTR sz, OLD_AFMMETRICS *metrics)
 609 {
 610     CHAR    *cp, *end_ptr;
 611     BOOL    vector = TRUE;
 612     double  d;
 613
 614     cp = sz + 1;
 615
 616     if (*cp == '0')
 617         ++cp;
 618
 619     if (*cp == 'X')
 620     {
 621         vector = FALSE;
 622         ++cp;
 623     }
 624
 625     if (!isspace(*cp))
 626         goto parse_error;
 627
 628     errno = 0;
 629     d = strtod(cp, &end_ptr);
 630     if (end_ptr == cp || errno != 0 ||
 631             DoubleToFloat(&(metrics->WX), d) == FALSE)
 632         goto parse_error;
 633
 634     if (vector == FALSE)
 635         return TRUE;
 636
 637     /*  Make sure that Y component of vector is zero */
 638
 639     d = strtod(cp, &end_ptr);                               /* errno == 0 */
 640     if (end_ptr == cp || errno != 0 || d != 0.0)
 641     {
 642         metrics->WX = FLT_MAX;
 643         goto parse_error;
 644     }
 645
 646     return TRUE;
 647
 648     parse_error:
 649         WARN("Error parsing character width '%s'\n", sz);
 650         return TRUE;
 651 }
 652
 653 /*******************************************************************************
 654  *
 655  *  ParseB
 656  *
 657  *  Fatal error:        return FALSE (none defined)
 658  *
 659  *  Non-fatal error:    leave metrics->B.ury set to FLT_MAX
 660  *
 661  */
 662 static BOOL ParseB(LPSTR sz, OLD_AFMMETRICS *metrics)
 663 {
 664     CHAR    *cp, *end_ptr;
 665     double  d;
 666
 667     errno = 0;
 668
 669     cp = sz + 1;
 670     d = strtod(cp, &end_ptr);
 671     if (end_ptr == cp || errno != 0 ||
 672             DoubleToFloat(&(metrics->B.llx), d) == FALSE)
 673         goto parse_error;
 674
 675     cp = end_ptr;
 676     d = strtod(cp, &end_ptr);
 677     if (end_ptr == cp || errno != 0 ||
 678             DoubleToFloat(&(metrics->B.lly), d) == FALSE)
 679         goto parse_error;
 680
 681     cp = end_ptr;
 682     d = strtod(cp, &end_ptr);
 683     if (end_ptr == cp || errno != 0 ||
 684             DoubleToFloat(&(metrics->B.urx), d) == FALSE)
 685         goto parse_error;
 686
 687     cp = end_ptr;
 688     d = strtod(cp, &end_ptr);
 689     if (end_ptr == cp || errno != 0 ||
 690             DoubleToFloat(&(metrics->B.ury), d) == FALSE)
 691         goto parse_error;
 692
 693     return TRUE;
 694
 695     parse_error:
 696         WARN("Error parsing glyph bounding box '%s'\n", sz);
 697         return TRUE;
 698 }
 699
 700 /*******************************************************************************
 701  *  ParseN
 702  *
 703  *  Fatal error:        return FALSE (PSDRV_GlyphName failure)
 704  *
 705  *  Non-fatal error:    leave metrics-> set to NULL
 706  *
 707  */
 708 static BOOL ParseN(LPSTR sz, OLD_AFMMETRICS *metrics)
 709 {
 710     CHAR    save, *cp, *end_ptr;
 711
 712     cp = sz + 1;
 713
 714     while (isspace(*cp))
 715         ++cp;
 716
 717     end_ptr = cp;
 718
 719     while (*end_ptr != '\0' && !isspace(*end_ptr))
 720         ++end_ptr;
 721
 722     if (end_ptr == cp)
 723     {
 724         WARN("Error parsing glyph name '%s'\n", sz);
 725         return TRUE;
 726     }
 727
 728     save = *end_ptr;
 729     *end_ptr = '\0';
 730
 731     metrics->N = PSDRV_GlyphName(cp);
 732     if (metrics->N == NULL)
 733         return FALSE;
 734
 735     *end_ptr = save;
 736     return TRUE;
 737 }
 738
 739 /*******************************************************************************
 740  *  ParseCharMetrics
 741  *
 742  *  Parses the metrics line for a single glyph in an AFM file.  Returns FALSE on
 743  *  fatal error; sets *metrics to 'badmetrics' on non-fatal error.
 744  *
 745  */
 746 static const OLD_AFMMETRICS badmetrics =
 747 {
 748     INT_MAX,                                        /* C */
 749     INT_MAX,                                        /* UV */
 750     FLT_MAX,                                        /* WX */
 751     NULL,                                           /* N */
 752     { FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX },         /* B */
 753     NULL                                            /* L */
 754 };
 755
 756 static BOOL ParseCharMetrics(LPSTR buffer, INT len, OLD_AFMMETRICS *metrics)
 757 {
 758     CHAR    *cp = buffer;
 759
 760     *metrics = badmetrics;
 761
 762     while (*cp != '\0')
 763     {
 764         while (isspace(*cp))
 765             ++cp;
 766
 767         switch(*cp)
 768         {
 769             case 'C':   if (ParseC(cp, metrics) == FALSE)
 770                             return FALSE;
 771                         break;
 772
 773             case 'W':   if (ParseW(cp, metrics) == FALSE)
 774                             return FALSE;
 775                         break;
 776
 777             case 'N':   if (ParseN(cp, metrics) == FALSE)
 778                             return FALSE;
 779                         break;
 780
 781             case 'B':   if (ParseB(cp, metrics) == FALSE)
 782                             return FALSE;
 783                         break;
 784         }
 785
 786         cp = strchr(cp, ';');
 787         if (cp == NULL)
 788         {
 789             WARN("No terminating semicolon\n");
 790             break;
 791         }
 792
 793         ++cp;
 794     }
 795
 796     if (metrics->C == INT_MAX || metrics->WX == FLT_MAX || metrics->N == NULL ||
 797             metrics->B.ury == FLT_MAX)
 798     {
 799         *metrics = badmetrics;
 800         return TRUE;
 801     }
 802
 803     return TRUE;
 804 }
 805
 806 /*******************************************************************************
 807  *  IsWinANSI
 808  *
 809  *  Checks whether Unicode value is part of Microsoft code page 1252
 810  *
 811  */
 812 static const LONG ansiChars[21] =
 813 {
 814     0x0152, 0x0153, 0x0160, 0x0161, 0x0178, 0x017d, 0x017e, 0x0192, 0x02c6,
 815     0x02c9, 0x02dc, 0x03bc, 0x2013, 0x2014, 0x2026, 0x2030, 0x2039, 0x203a,
 816     0x20ac, 0x2122, 0x2219
 817 };
 818
 819 static int cmpUV(const void *a, const void *b)
 820 {
 821     return (int)(*((const LONG *)a) - *((const LONG *)b));
 822 }
 823
 824 static inline BOOL IsWinANSI(LONG uv)
 825 {
 826     if ((0x0020 <= uv && uv <= 0x007e) || (0x00a0 <= uv && uv <= 0x00ff) ||
 827             (0x2018 <= uv && uv <= 0x201a) || (0x201c <= uv && uv <= 0x201e) ||
 828             (0x2020 <= uv && uv <= 0x2022))
 829         return TRUE;
 830
 831     if (bsearch(&uv, ansiChars, 21, sizeof(INT), cmpUV) != NULL)
 832         return TRUE;
 833
 834     return FALSE;
 835 }
 836
 837 /*******************************************************************************
 838  *  Unicodify
 839  *
 840  *  Determines Unicode value (UV) for each glyph, based on font encoding.
 841  *
 842  *      FontSpecific:   Usable encodings (0x20 - 0xff) are mapped into the
 843  *                      Unicode private use range U+F020 - U+F0FF.
 844  *
 845  *      other:          UV determined by glyph name, based on Adobe Glyph List.
 846  *
 847  *  Also does some font metric calculations that require UVs to be known.
 848  *
 849  */
 850 static int UnicodeGlyphByNameIndex(const void *a, const void *b)
 851 {
 852     return ((const UNICODEGLYPH *)a)->name->index -
 853             ((const UNICODEGLYPH *)b)->name->index;
 854 }
 855
 856 static VOID Unicodify(AFM *afm, OLD_AFMMETRICS *metrics)
 857 {
 858     INT     i;
 859
 860     if (strcmp(afm->EncodingScheme, "FontSpecific") == 0)
 861     {
 862         for (i = 0; i < afm->NumofMetrics; ++i)
 863         {
 864             if (metrics[i].C >= 0x20 && metrics[i].C <= 0xff)
 865             {
 866                 metrics[i].UV = metrics[i].C | 0xf000L;
 867             }
 868             else
 869             {
 870                 TRACE("Unencoded glyph '%s'\n", metrics[i].N->sz);
 871                 metrics[i].UV = -1L;
 872             }
 873         }
 874
 875         afm->WinMetrics.sAscender = (SHORT)Round(afm->FontBBox.ury);
 876         afm->WinMetrics.sDescender = (SHORT)Round(afm->FontBBox.lly);
 877     }
 878     else                                        /* non-FontSpecific encoding */
 879     {
 880         UNICODEGLYPH    ug, *p_ug;
 881
 882         PSDRV_IndexGlyphList();         /* for fast searching of glyph names */
 883
 884         afm->WinMetrics.sAscender = afm->WinMetrics.sDescender = 0;
 885
 886         for (i = 0; i < afm->NumofMetrics; ++i)
 887         {
 888             ug.name = metrics[i].N;
 889             p_ug = bsearch(&ug, PSDRV_AGLbyName, PSDRV_AGLbyNameSize,
 890                     sizeof(ug), UnicodeGlyphByNameIndex);
 891             if (p_ug == NULL)
 892             {
 893                 TRACE("Glyph '%s' not in Adobe Glyph List\n", ug.name->sz);
 894                 metrics[i].UV = -1L;
 895             }
 896             else
 897             {
 898                 metrics[i].UV = p_ug->UV;
 899
 900                 if (IsWinANSI(p_ug->UV))
 901                 {
 902                     SHORT   ury = (SHORT)Round(metrics[i].B.ury);
 903                     SHORT   lly = (SHORT)Round(metrics[i].B.lly);
 904
 905                     if (ury > afm->WinMetrics.sAscender)
 906                         afm->WinMetrics.sAscender = ury;
 907                     if (lly < afm->WinMetrics.sDescender)
 908                         afm->WinMetrics.sDescender = lly;
 909                 }
 910             }
 911         }
 912
 913         if (afm->WinMetrics.sAscender == 0)
 914             afm->WinMetrics.sAscender = (SHORT)Round(afm->FontBBox.ury);
 915         if (afm->WinMetrics.sDescender == 0)
 916             afm->WinMetrics.sDescender = (SHORT)Round(afm->FontBBox.lly);
 917     }
 918
 919     afm->WinMetrics.sLineGap =
 920             1150 - (afm->WinMetrics.sAscender - afm->WinMetrics.sDescender);
 921     if (afm->WinMetrics.sLineGap < 0)
 922         afm->WinMetrics.sLineGap = 0;
 923
 924     afm->WinMetrics.usWinAscent = (afm->WinMetrics.sAscender > 0) ?
 925             afm->WinMetrics.sAscender : 0;
 926     afm->WinMetrics.usWinDescent = (afm->WinMetrics.sDescender < 0) ?
 927             -(afm->WinMetrics.sDescender) : 0;
 928 }
 929
 930 /*******************************************************************************
 931  *  ReadCharMetrics
 932  *
 933  *  Reads metrics for all glyphs.  *p_metrics will be NULL on non-fatal error.
 934  *
 935  */
 936 static int OldAFMMetricsByUV(const void *a, const void *b)
 937 {
 938     return ((const OLD_AFMMETRICS *)a)->UV - ((const OLD_AFMMETRICS *)b)->UV;
 939 }
 940
 941 static BOOL ReadCharMetrics(FILE *file, CHAR buffer[], INT bufsize, AFM *afm,
 942         AFMMETRICS **p_metrics)
 943 {
 944     BOOL            retval, found;
 945     OLD_AFMMETRICS  *old_metrics, *encoded_metrics;
 946     AFMMETRICS      *metrics;
 947     INT             i, len;
 948
 949     retval = ReadInt(file, buffer, bufsize, "StartCharMetrics",
 950             &(afm->NumofMetrics), &found);
 951     if (retval == FALSE || found == FALSE)
 952     {
 953         *p_metrics = NULL;
 954         return retval;
 955     }
 956
 957     old_metrics = HeapAlloc(PSDRV_Heap, 0,
 958             afm->NumofMetrics * sizeof(*old_metrics));
 959     if (old_metrics == NULL)
 960         return FALSE;
 961
 962     for (i = 0; i < afm->NumofMetrics; ++i)
 963     {
 964         retval = ReadLine(file, buffer, bufsize, &len);
 965         if (retval == FALSE)
 966             goto cleanup_old_metrics;
 967
 968         if(len > 0)
 969         {
 970             retval = ParseCharMetrics(buffer, len, old_metrics + i);
 971             if (retval == FALSE || old_metrics[i].C == INT_MAX)
 972                 goto cleanup_old_metrics;
 973
 974             continue;
 975         }
 976
 977         switch (len)
 978         {
 979             case 0:         --i;
 980                             continue;
 981
 982             case INT_MIN:   WARN("Ignoring long line '%32s...'\n", buffer);
 983                             goto cleanup_old_metrics;       /* retval == TRUE */
 984
 985             case EOF:       WARN("Unexpected EOF\n");
 986                             goto cleanup_old_metrics;       /* retval == TRUE */
 987         }
 988     }
 989
 990     Unicodify(afm, old_metrics);    /* wait until glyph names have been read */
 991
 992     qsort(old_metrics, afm->NumofMetrics, sizeof(*old_metrics),
 993             OldAFMMetricsByUV);
 994
 995     for (i = 0; old_metrics[i].UV == -1; ++i);      /* count unencoded glyphs */
 996
 997     afm->NumofMetrics -= i;
 998     encoded_metrics = old_metrics + i;
 999
1000     afm->Metrics = *p_metrics = metrics = HeapAlloc(PSDRV_Heap, 0,
1001             afm->NumofMetrics * sizeof(*metrics));
1002     if (afm->Metrics == NULL)
1003         goto cleanup_old_metrics;                           /* retval == TRUE */
1004
1005     for (i = 0; i < afm->NumofMetrics; ++i, ++metrics, ++encoded_metrics)
1006     {
1007         metrics->C = encoded_metrics->C;
1008         metrics->UV = encoded_metrics->UV;
1009         metrics->WX = encoded_metrics->WX;
1010         metrics->N = encoded_metrics->N;
1011     }
1012
1013     HeapFree(PSDRV_Heap, 0, old_metrics);
1014
1015     afm->WinMetrics.sAvgCharWidth = PSDRV_CalcAvgCharWidth(afm);
1016
1017     return TRUE;
1018
1019     cleanup_old_metrics:                /* handle fatal or non-fatal errors */
1020         HeapFree(PSDRV_Heap, 0, old_metrics);
1021         *p_metrics = NULL;
1022         return retval;
1023 }
1024
1025 /*******************************************************************************
1026  *  BuildAFM
1027  *
1028  *  Builds the AFM for a PostScript font and adds it to the driver font list.
1029  *  Returns FALSE only on an unexpected error (memory allocation or I/O error).
1030  *
1031  */
1032 static BOOL BuildAFM(FILE *file)
1033 {
1034     CHAR        buffer[258];            /* allow for <cr>, <lf>, and <nul> */
1035     AFM         *afm;
1036     AFMMETRICS  *metrics;
1037     LPSTR       font_name, full_name, family_name, encoding_scheme;
1038     BOOL        retval, added;
1039
1040     retval = ReadFontMetrics(file, buffer, sizeof(buffer), &afm);
1041     if (retval == FALSE || afm == NULL)
1042         return retval;
1043
1044     retval = ReadString(file, buffer, sizeof(buffer), "FontName", &font_name);
1045     if (retval == FALSE || font_name == NULL)
1046         goto cleanup_afm;
1047
1048     retval = ReadString(file, buffer, sizeof(buffer), "FullName", &full_name);
1049     if (retval == FALSE || full_name == NULL)
1050         goto cleanup_font_name;
1051
1052     retval = ReadString(file, buffer, sizeof(buffer), "FamilyName",
1053             &family_name);
1054     if (retval == FALSE || family_name == NULL)
1055         goto cleanup_full_name;
1056
1057     retval = ReadString(file, buffer, sizeof(buffer), "EncodingScheme",
1058             &encoding_scheme);
1059     if (retval == FALSE || encoding_scheme == NULL)
1060         goto cleanup_family_name;
1061
1062     afm->FontName = font_name;
1063     afm->FullName = full_name;
1064     afm->FamilyName = family_name;
1065     afm->EncodingScheme = encoding_scheme;
1066
1067     retval = ReadCharMetrics(file, buffer, sizeof(buffer), afm, &metrics);
1068     if (retval == FALSE || metrics == FALSE)
1069         goto cleanup_encoding_scheme;
1070
1071     retval = PSDRV_AddAFMtoList(&PSDRV_AFMFontList, afm, &added);
1072     if (retval == FALSE || added == FALSE)
1073         goto cleanup_encoding_scheme;
1074
1075     return TRUE;
1076
1077     /* clean up after fatal or non-fatal errors */
1078
1079     cleanup_encoding_scheme:
1080         HeapFree(PSDRV_Heap, 0, encoding_scheme);
1081     cleanup_family_name:
1082         HeapFree(PSDRV_Heap, 0, family_name);
1083     cleanup_full_name:
1084         HeapFree(PSDRV_Heap, 0, full_name);
1085     cleanup_font_name:
1086         HeapFree(PSDRV_Heap, 0, font_name);
1087     cleanup_afm:
1088         HeapFree(PSDRV_Heap, 0, afm);
1089
1090     return retval;
1091 }
1092
1093 /*******************************************************************************
1094  *  ReadAFMFile
1095  *
1096  *  Reads font metrics from Type 1 AFM file.  Only returns FALSE for
1097  *  unexpected errors (memory allocation or I/O).
1098  *
1099  */
1100 static BOOL ReadAFMFile(LPCSTR filename)
1101 {
1102     FILE    *f;
1103     BOOL    retval;
1104
1105     TRACE("%s\n", filename);
1106
1107     f = fopen(filename, "r");
1108     if (f == NULL)
1109     {
1110         WARN("%s: %s\n", filename, strerror(errno));
1111         return TRUE;
1112     }
1113
1114     retval = BuildAFM(f);
1115
1116     fclose(f);
1117     return retval;
1118 }
1119
1120 /*******************************************************************************
1121  *  ReadAFMDir
1122  *
1123  *  Reads all Type 1 AFM files in a directory.
1124  *
1125  */
1126 static BOOL ReadAFMDir(LPCSTR dirname)
1127 {
1128     struct dirent   *dent;
1129     DIR             *dir;
1130     CHAR            filename[256];
1131
1132     dir = opendir(dirname);
1133     if (dir == NULL)
1134     {
1135         WARN("%s: %s\n", dirname, strerror(errno));
1136         return TRUE;
1137     }
1138
1139     while ((dent = readdir(dir)) != NULL)
1140     {
1141         CHAR    *file_extension = strchr(dent->d_name, '.');
1142         int     fn_len;
1143
1144         if (file_extension == NULL || strcasecmp(file_extension, ".afm") != 0)
1145             continue;
1146
1147         fn_len = snprintf(filename, 256, "%s/%s", dirname, dent->d_name);
1148         if (fn_len < 0 || fn_len > sizeof(filename) - 1)
1149         {
1150             WARN("Path '%s/%s' is too long\n", dirname, dent->d_name);
1151             continue;
1152         }
1153
1154         if (ReadAFMFile(filename) == FALSE)
1155         {
1156             closedir(dir);
1157             return FALSE;
1158         }
1159     }
1160
1161     closedir(dir);
1162     return TRUE;
1163 }
1164
1165 /*******************************************************************************
1166  *  PSDRV_GetType1Metrics
1167  *
1168  *  Reads font metrics from Type 1 AFM font files in directories listed in the
1169  *  [afmdirs] section of the Wine configuration file.
1170  *
1171  *  If this function fails (returns FALSE), the driver will fail to initialize
1172  *  and the driver heap will be destroyed, so it's not necessary to HeapFree
1173  *  everything in that event.
1174  *
1175  */
1176 BOOL PSDRV_GetType1Metrics(void)
1177 {
1178     static const WCHAR pathW[] = {'A','F','M','P','a','t','h',0};
1179     HKEY hkey;
1180     DWORD len;
1181     LPWSTR valueW;
1182     LPSTR valueA, ptr;
1183
1184     /* @@ Wine registry key: HKCU\Software\Wine\Fonts */
1185     if (RegOpenKeyA(HKEY_CURRENT_USER, "Software\\Wine\\Fonts", &hkey) != ERROR_SUCCESS)
1186         return TRUE;
1187
1188     if (RegQueryValueExW( hkey, pathW, NULL, NULL, NULL, &len ) == ERROR_SUCCESS)
1189     {
1190         len += sizeof(WCHAR);
1191         valueW = HeapAlloc( PSDRV_Heap, 0, len );
1192         if (RegQueryValueExW( hkey, pathW, NULL, NULL, (LPBYTE)valueW, &len ) == ERROR_SUCCESS)
1193         {
1194             len = WideCharToMultiByte( CP_UNIXCP, 0, valueW, -1, NULL, 0, NULL, NULL );
1195             valueA = HeapAlloc( PSDRV_Heap, 0, len );
1196             WideCharToMultiByte( CP_UNIXCP, 0, valueW, -1, valueA, len, NULL, NULL );
1197             TRACE( "got AFM font path %s\n", debugstr_a(valueA) );
1198             ptr = valueA;
1199             while (ptr)
1200             {
1201                 LPSTR next = strchr( ptr, ':' );
1202                 if (next) *next++ = 0;
1203                 if (!ReadAFMDir( ptr ))
1204                 {
1205                     RegCloseKey(hkey);
1206                     return FALSE;
1207                 }
1208                 ptr = next;
1209             }
1210             HeapFree( PSDRV_Heap, 0, valueA );
1211         }
1212         HeapFree( PSDRV_Heap, 0, valueW );
1213     }
1214
1215     RegCloseKey(hkey);
1216     return TRUE;
1217 }