granicus.if.org Git - imagemagick/blob - MagickCore/coder.c

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                                                                             %
   6 %                   CCCC   OOO   DDDD    EEEEE  RRRR                          %
   7 %                  C      O   O  D   D   E      R   R                         %
   8 %                  C      O   O  D   D   EEE    RRRR                          %
   9 %                  C      O   O  D   D   E      R R                           %
  10 %                   CCCC   OOO   DDDD    EEEEE  R  R                          %
  11 %                                                                             %
  12 %                                                                             %
  13 %                     MagickCore Image Coder Methods                          %
  14 %                                                                             %
  15 %                              Software Design                                %
  16 %                                John Cristy                                  %
  17 %                                 May 2001                                    %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2012 ImageMagick Studio LLC, a non-profit organization      %
  21 %  dedicated to making software imaging solutions freely available.           %
  22 %                                                                             %
  23 %  You may not use this file except in compliance with the License.  You may  %
  24 %  obtain a copy of the License at                                            %
  25 %                                                                             %
  26 %    http://www.imagemagick.org/script/license.php                            %
  27 %                                                                             %
  28 %  Unless required by applicable law or agreed to in writing, software        %
  29 %  distributed under the License is distributed on an "AS IS" BASIS,          %
  30 %  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   %
  31 %  See the License for the specific language governing permissions and        %
  32 %  limitations under the License.                                             %
  33 %                                                                             %
  34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  35 %
  36 %
  37 */
  38 \f
  39 /*
  40   Include declarations.
  41 */
  42 #include "MagickCore/studio.h"
  43 #include "MagickCore/blob.h"
  44 #include "MagickCore/client.h"
  45 #include "MagickCore/coder.h"
  46 #include "MagickCore/coder-private.h"
  47 #include "MagickCore/configure.h"
  48 #include "MagickCore/draw.h"
  49 #include "MagickCore/exception.h"
  50 #include "MagickCore/exception-private.h"
  51 #include "MagickCore/hashmap.h"
  52 #include "MagickCore/log.h"
  53 #include "MagickCore/memory_.h"
  54 #include "MagickCore/option.h"
  55 #include "MagickCore/semaphore.h"
  56 #include "MagickCore/string_.h"
  57 #include "MagickCore/splay-tree.h"
  58 #include "MagickCore/token.h"
  59 #include "MagickCore/utility.h"
  60 #include "MagickCore/utility-private.h"
  61 #include "MagickCore/xml-tree.h"
  62 \f
  63 /*
  64   Define declarations.
  65 */
  66 #define MagickCoderFilename  "coder.xml"
  67 \f
  68 /*
  69   Typedef declarations.
  70 */
  71 typedef struct _CoderMapInfo
  72 {
  73   const char
  74     *magick,
  75     *name;
  76 } CoderMapInfo;
  77 \f
  78 /*
  79   Static declarations.
  80 */
  81 static const CoderMapInfo
  82   CoderMap[] =
  83   {
  84     { "3FR", "DNG" },
  85     { "8BIM", "META" },
  86     { "8BIMTEXT", "META" },
  87     { "8BIMWTEXT", "META" },
  88     { "AFM", "TTF" },
  89     { "A", "RAW" },
  90     { "AI", "PDF" },
  91     { "APP1JPEG", "META" },
  92     { "APP1", "META" },
  93     { "ARW", "DNG" },
  94     { "AVI", "MPEG" },
  95     { "BIE", "JBIG" },
  96     { "BMP2", "BMP" },
  97     { "BMP3", "BMP" },
  98     { "B", "RAW" },
  99     { "BRF", "BRAILLE" },
 100     { "BGRA", "BGR" },
 101     { "CMYKA", "CMYK" },
 102     { "C", "RAW" },
 103     { "CAL", "CALS" },
 104     { "CANVAS", "XC" },
 105     { "CR2", "DNG" },
 106     { "CRW", "DNG" },
 107     { "CUR", "ICON" },
 108     { "DCR", "DNG" },
 109     { "DCX", "PCX" },
 110     { "DFONT", "TTF" },
 111     { "EPDF", "PDF" },
 112     { "EPI", "PS" },
 113     { "EPS2", "PS2" },
 114     { "EPS3", "PS3" },
 115     { "EPSF", "PS" },
 116     { "EPSI", "PS" },
 117     { "EPS", "PS" },
 118     { "EPT2", "EPT" },
 119     { "EPT3", "EPT" },
 120     { "ERF", "DNG" },
 121     { "EXIF", "META" },
 122     { "FILE", "URL" },
 123     { "FRACTAL", "PLASMA" },
 124     { "FTP", "URL" },
 125     { "FTS", "FITS" },
 126     { "G3", "FAX" },
 127     { "GIF87", "GIF" },
 128     { "G", "RAW" },
 129     { "GRANITE", "MAGICK" },
 130     { "GROUP4", "TIFF" },
 131     { "K25", "DNG" },
 132     { "KDC", "DNG" },
 133     { "H", "MAGICK" },
 134     { "HTM", "HTML" },
 135     { "HTTP", "URL" },
 136     { "ICB", "TGA" },
 137     { "ICC", "META" },
 138     { "ICM", "META" },
 139     { "ICO", "ICON" },
 140     { "IMPLICIT", "***" },
 141     { "IPTC", "META" },
 142     { "IPTCTEXT", "META" },
 143     { "IPTCWTEXT", "META" },
 144     { "ISOBRL", "BRAILLE" },
 145     { "JBG", "JBIG" },
 146     { "JNG", "PNG" },
 147     { "JPC", "JP2" },
 148     { "J2C", "JP2" },
 149     { "J2K", "JP2" },
 150     { "JPG", "JPEG" },
 151     { "JPX", "JP2" },
 152     { "K", "RAW" },
 153     { "LOGO", "MAGICK" },
 154     { "M2V", "MPEG" },
 155     { "M4V", "MPEG" },
 156     { "M", "RAW" },
 157     { "MNG", "PNG" },
 158     { "MOV", "MPEG" },
 159     { "MP4", "MPEG" },
 160     { "MPG", "MPEG" },
 161     { "MPRI", "MPR" },
 162     { "MEF", "DNG" },
 163     { "MRW", "DNG" },
 164     { "MSVG", "SVG" },
 165     { "NEF", "DNG" },
 166     { "NETSCAPE", "MAGICK" },
 167     { "NRW", "DNG" },
 168     { "O", "RAW" },
 169     { "ORF", "DNG" },
 170     { "OTF", "TTF" },
 171     { "P7", "PNM" },
 172     { "PAL", "UYVY" },
 173     { "PAM", "PNM" },
 174     { "PBM", "PNM" },
 175     { "PCDS", "PCD" },
 176     { "PDFA", "PDF" },
 177     { "PEF", "DNG" },
 178     { "PEF", "DNG" },
 179     { "PFA", "TTF" },
 180     { "PFB", "TTF" },
 181     { "PFM", "PNM" },
 182     { "PGM", "PNM" },
 183     { "PGX", "JP2" },
 184     { "PICON", "XPM" },
 185     { "PJPEG", "JPEG" },
 186     { "PM", "XPM" },
 187     { "PNG24", "PNG" },
 188     { "PNG32", "PNG" },
 189     { "PNG8", "PNG" },
 190     { "PPM", "PNM" },
 191     { "PSB", "PSD" },
 192     { "PTIF", "TIFF" },
 193     { "RADIAL-GRADIENT", "GRADIENT" },
 194     { "RAF", "DNG" },
 195     { "RAS", "SUN" },
 196     { "RGBA", "RGB" },
 197     { "RGBO", "RGB" },
 198     { "R", "RAW" },
 199     { "ROSE", "MAGICK" },
 200     { "SHTML", "HTML" },
 201     { "SR2", "DNG" },
 202     { "SRF", "DNG" },
 203     { "SVGZ", "SVG" },
 204     { "TEXT", "TXT" },
 205     { "TIFF64", "TIFF" },
 206     { "TIF", "TIFF" },
 207     { "TTC", "TTF" },
 208     { "UBRL", "BRAILLE" },
 209     { "VDA", "TGA" },
 210     { "VST", "TGA" },
 211     { "WIZARD", "MAGICK" },
 212     { "WMV", "MPEG" },
 213     { "WMFWIN32", "EMF" },
 214     { "WMZ", "WMF" },
 215     { "X3f", "DNG" },
 216     { "XMP", "META" },
 217     { "XTRNARRAY", "XTRN" },
 218     { "XTRNBLOB", "XTRN" },
 219     { "XTRNFILE", "XTRN" },
 220     { "XTRNIMAGE", "XTRN" },
 221     { "XV", "VIFF" },
 222     { "Y", "RAW" },
 223     { "YCbCrA", "YCbCr" }
 224  };
 225
 226 static SemaphoreInfo
 227   *coder_semaphore = (SemaphoreInfo *) NULL;
 228
 229 static SplayTreeInfo
 230   *coder_list = (SplayTreeInfo *) NULL;
 231
 232 static volatile MagickBooleanType
 233   instantiate_coder = MagickFalse;
 234 \f
 235 /*
 236   Forward declarations.
 237 */
 238 static MagickBooleanType
 239   InitializeCoderList(ExceptionInfo *),
 240   LoadCoderLists(const char *,ExceptionInfo *);
 241 \f
 242 /*
 243 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 244 %                                                                             %
 245 %                                                                             %
 246 %                                                                             %
 247 +   C o d e r C o m p o n e n t G e n e s i s                                 %
 248 %                                                                             %
 249 %                                                                             %
 250 %                                                                             %
 251 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 252 %
 253 %  CoderComponentGenesis() instantiates the coder component.
 254 %
 255 %  The format of the CoderComponentGenesis method is:
 256 %
 257 %      MagickBooleanType CoderComponentGenesis(void)
 258 %
 259 */
 260 MagickPrivate MagickBooleanType CoderComponentGenesis(void)
 261 {
 262   AcquireSemaphoreInfo(&coder_semaphore);
 263   return(MagickTrue);
 264 }
 265 \f
 266 /*
 267 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 268 %                                                                             %
 269 %                                                                             %
 270 %                                                                             %
 271 +   C o d e r C o m p o n e n t T e r m i n u s                               %
 272 %                                                                             %
 273 %                                                                             %
 274 %                                                                             %
 275 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 276 %
 277 %  CoderComponentTerminus() destroys the coder component.
 278 %
 279 %  The format of the CoderComponentTerminus method is:
 280 %
 281 %      CoderComponentTerminus(void)
 282 %
 283 */
 284 MagickPrivate void CoderComponentTerminus(void)
 285 {
 286   if (coder_semaphore == (SemaphoreInfo *) NULL)
 287     AcquireSemaphoreInfo(&coder_semaphore);
 288   LockSemaphoreInfo(coder_semaphore);
 289   if (coder_list != (SplayTreeInfo *) NULL)
 290     coder_list=DestroySplayTree(coder_list);
 291   instantiate_coder=MagickFalse;
 292   UnlockSemaphoreInfo(coder_semaphore);
 293   DestroySemaphoreInfo(&coder_semaphore);
 294 }
 295 \f
 296 /*
 297 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 298 %                                                                             %
 299 %                                                                             %
 300 %                                                                             %
 301 +   G e t C o d e r I n f o                                                   %
 302 %                                                                             %
 303 %                                                                             %
 304 %                                                                             %
 305 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 306 %
 307 %  GetCoderInfo searches the coder list for the specified name and if found
 308 %  returns attributes for that coder.
 309 %
 310 %  The format of the GetCoderInfo method is:
 311 %
 312 %      const CoderInfo *GetCoderInfo(const char *name,ExceptionInfo *exception)
 313 %
 314 %  A description of each parameter follows:
 315 %
 316 %    o name: the coder name.
 317 %
 318 %    o exception: return any errors or warnings in this structure.
 319 %
 320 */
 321 MagickExport const CoderInfo *GetCoderInfo(const char *name,
 322   ExceptionInfo *exception)
 323 {
 324   assert(exception != (ExceptionInfo *) NULL);
 325   if ((coder_list == (SplayTreeInfo *) NULL) ||
 326       (instantiate_coder == MagickFalse))
 327     if (InitializeCoderList(exception) == MagickFalse)
 328       return((const CoderInfo *) NULL);
 329   if ((coder_list == (SplayTreeInfo *) NULL) ||
 330       (GetNumberOfNodesInSplayTree(coder_list) == 0))
 331     return((const CoderInfo *) NULL);
 332   if ((name == (const char *) NULL) || (LocaleCompare(name,"*") == 0))
 333     {
 334       ResetSplayTreeIterator(coder_list);
 335       return((const CoderInfo *) GetNextValueInSplayTree(coder_list));
 336     }
 337   return((const CoderInfo *) GetValueFromSplayTree(coder_list,name));
 338 }
 339 \f
 340 /*
 341 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 342 %                                                                             %
 343 %                                                                             %
 344 %                                                                             %
 345 %   G e t C o d e r I n f o L i s t                                           %
 346 %                                                                             %
 347 %                                                                             %
 348 %                                                                             %
 349 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 350 %
 351 %  GetCoderInfoList() returns any coder_map that match the specified pattern.
 352 %  The format of the GetCoderInfoList function is:
 353 %
 354 %      const CoderInfo **GetCoderInfoList(const char *pattern,
 355 %        size_t *number_coders,ExceptionInfo *exception)
 356 %
 357 %  A description of each parameter follows:
 358 %
 359 %    o pattern: Specifies a pointer to a text string containing a pattern.
 360 %
 361 %    o number_coders:  This integer returns the number of coders in the list.
 362 %
 363 %    o exception: return any errors or warnings in this structure.
 364 %
 365 */
 366
 367 static int CoderInfoCompare(const void *x,const void *y)
 368 {
 369   const CoderInfo
 370     **p,
 371     **q;
 372
 373   p=(const CoderInfo **) x,
 374   q=(const CoderInfo **) y;
 375   if (LocaleCompare((*p)->path,(*q)->path) == 0)
 376     return(LocaleCompare((*p)->name,(*q)->name));
 377   return(LocaleCompare((*p)->path,(*q)->path));
 378 }
 379
 380 MagickExport const CoderInfo **GetCoderInfoList(const char *pattern,
 381   size_t *number_coders,ExceptionInfo *exception)
 382 {
 383   const CoderInfo
 384     **coder_map;
 385
 386   register const CoderInfo
 387     *p;
 388
 389   register ssize_t
 390     i;
 391
 392   /*
 393     Allocate coder list.
 394   */
 395   assert(pattern != (char *) NULL);
 396   (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",pattern);
 397   assert(number_coders != (size_t *) NULL);
 398   *number_coders=0;
 399   p=GetCoderInfo("*",exception);
 400   if (p == (const CoderInfo *) NULL)
 401     return((const CoderInfo **) NULL);
 402   coder_map=(const CoderInfo **) AcquireQuantumMemory((size_t)
 403     GetNumberOfNodesInSplayTree(coder_list)+1UL,sizeof(*coder_map));
 404   if (coder_map == (const CoderInfo **) NULL)
 405     return((const CoderInfo **) NULL);
 406   /*
 407     Generate coder list.
 408   */
 409   LockSemaphoreInfo(coder_semaphore);
 410   ResetSplayTreeIterator(coder_list);
 411   p=(const CoderInfo *) GetNextValueInSplayTree(coder_list);
 412   for (i=0; p != (const CoderInfo *) NULL; )
 413   {
 414     if ((p->stealth == MagickFalse) &&
 415         (GlobExpression(p->name,pattern,MagickFalse) != MagickFalse))
 416       coder_map[i++]=p;
 417     p=(const CoderInfo *) GetNextValueInSplayTree(coder_list);
 418   }
 419   UnlockSemaphoreInfo(coder_semaphore);
 420   qsort((void *) coder_map,(size_t) i,sizeof(*coder_map),CoderInfoCompare);
 421   coder_map[i]=(CoderInfo *) NULL;
 422   *number_coders=(size_t) i;
 423   return(coder_map);
 424 }
 425 \f
 426 /*
 427 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 428 %                                                                             %
 429 %                                                                             %
 430 %                                                                             %
 431 %   G e t C o d e r L i s t                                                   %
 432 %                                                                             %
 433 %                                                                             %
 434 %                                                                             %
 435 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 436 %
 437 %  GetCoderList() returns any coder_map that match the specified pattern.
 438 %
 439 %  The format of the GetCoderList function is:
 440 %
 441 %      char **GetCoderList(const char *pattern,size_t *number_coders,
 442 %        ExceptionInfo *exception)
 443 %
 444 %  A description of each parameter follows:
 445 %
 446 %    o pattern: Specifies a pointer to a text string containing a pattern.
 447 %
 448 %    o number_coders:  This integer returns the number of coders in the list.
 449 %
 450 %    o exception: return any errors or warnings in this structure.
 451 %
 452 */
 453
 454 static int CoderCompare(const void *x,const void *y)
 455 {
 456   register const char
 457     **p,
 458     **q;
 459
 460   p=(const char **) x;
 461   q=(const char **) y;
 462   return(LocaleCompare(*p,*q));
 463 }
 464
 465 MagickExport char **GetCoderList(const char *pattern,
 466   size_t *number_coders,ExceptionInfo *exception)
 467 {
 468   char
 469     **coder_map;
 470
 471   register const CoderInfo
 472     *p;
 473
 474   register ssize_t
 475     i;
 476
 477   /*
 478     Allocate coder list.
 479   */
 480   assert(pattern != (char *) NULL);
 481   (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",pattern);
 482   assert(number_coders != (size_t *) NULL);
 483   *number_coders=0;
 484   p=GetCoderInfo("*",exception);
 485   if (p == (const CoderInfo *) NULL)
 486     return((char **) NULL);
 487   coder_map=(char **) AcquireQuantumMemory((size_t)
 488     GetNumberOfNodesInSplayTree(coder_list)+1UL,sizeof(*coder_map));
 489   if (coder_map == (char **) NULL)
 490     return((char **) NULL);
 491   /*
 492     Generate coder list.
 493   */
 494   LockSemaphoreInfo(coder_semaphore);
 495   ResetSplayTreeIterator(coder_list);
 496   p=(const CoderInfo *) GetNextValueInSplayTree(coder_list);
 497   for (i=0; p != (const CoderInfo *) NULL; )
 498   {
 499     if ((p->stealth == MagickFalse) &&
 500         (GlobExpression(p->name,pattern,MagickFalse) != MagickFalse))
 501       coder_map[i++]=ConstantString(p->name);
 502     p=(const CoderInfo *) GetNextValueInSplayTree(coder_list);
 503   }
 504   UnlockSemaphoreInfo(coder_semaphore);
 505   qsort((void *) coder_map,(size_t) i,sizeof(*coder_map),CoderCompare);
 506   coder_map[i]=(char *) NULL;
 507   *number_coders=(size_t) i;
 508   return(coder_map);
 509 }
 510 \f
 511 /*
 512 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 513 %                                                                             %
 514 %                                                                             %
 515 %                                                                             %
 516 +   I n i t i a l i z e C o d e r L i s t                                     %
 517 %                                                                             %
 518 %                                                                             %
 519 %                                                                             %
 520 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 521 %
 522 %  InitializeCoderList() initializes the coder list.
 523 %
 524 %  The format of the InitializeCoderList method is:
 525 %
 526 %      MagickBooleanType InitializeCoderList(ExceptionInfo *exception)
 527 %
 528 %  A description of each parameter follows.
 529 %
 530 %    o exception: return any errors or warnings in this structure.
 531 %
 532 */
 533 static MagickBooleanType InitializeCoderList(ExceptionInfo *exception)
 534 {
 535   if ((coder_list == (SplayTreeInfo *) NULL) &&
 536       (instantiate_coder == MagickFalse))
 537     {
 538       if (coder_semaphore == (SemaphoreInfo *) NULL)
 539         AcquireSemaphoreInfo(&coder_semaphore);
 540       LockSemaphoreInfo(coder_semaphore);
 541       if ((coder_list == (SplayTreeInfo *) NULL) &&
 542           (instantiate_coder == MagickFalse))
 543         {
 544           (void) LoadCoderLists(MagickCoderFilename,exception);
 545           instantiate_coder=MagickTrue;
 546         }
 547       UnlockSemaphoreInfo(coder_semaphore);
 548     }
 549   return(coder_list != (SplayTreeInfo *) NULL ? MagickTrue : MagickFalse);
 550 }
 551 \f
 552 /*
 553 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 554 %                                                                             %
 555 %                                                                             %
 556 %                                                                             %
 557 %  L i s t C o d e r I n f o                                                  %
 558 %                                                                             %
 559 %                                                                             %
 560 %                                                                             %
 561 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 562 %
 563 %  ListCoderInfo() lists the coder info to a file.
 564 %
 565 %  The format of the ListCoderInfo coder is:
 566 %
 567 %      MagickBooleanType ListCoderInfo(FILE *file,ExceptionInfo *exception)
 568 %
 569 %  A description of each parameter follows.
 570 %
 571 %    o file:  An pointer to a FILE.
 572 %
 573 %    o exception: return any errors or warnings in this structure.
 574 %
 575 */
 576 MagickExport MagickBooleanType ListCoderInfo(FILE *file,
 577   ExceptionInfo *exception)
 578 {
 579   const char
 580     *path;
 581
 582   const CoderInfo
 583     **coder_info;
 584
 585   register ssize_t
 586     i;
 587
 588   size_t
 589     number_coders;
 590
 591   ssize_t
 592     j;
 593
 594   if (file == (const FILE *) NULL)
 595     file=stdout;
 596   coder_info=GetCoderInfoList("*",&number_coders,exception);
 597   if (coder_info == (const CoderInfo **) NULL)
 598     return(MagickFalse);
 599   path=(const char *) NULL;
 600   for (i=0; i < (ssize_t) number_coders; i++)
 601   {
 602     if (coder_info[i]->stealth != MagickFalse)
 603       continue;
 604     if ((path == (const char *) NULL) ||
 605         (LocaleCompare(path,coder_info[i]->path) != 0))
 606       {
 607         if (coder_info[i]->path != (char *) NULL)
 608           (void) FormatLocaleFile(file,"\nPath: %s\n\n",coder_info[i]->path);
 609         (void) FormatLocaleFile(file,"Magick      Coder\n");
 610         (void) FormatLocaleFile(file,
 611           "-------------------------------------------------"
 612           "------------------------------\n");
 613       }
 614     path=coder_info[i]->path;
 615     (void) FormatLocaleFile(file,"%s",coder_info[i]->magick);
 616     for (j=(ssize_t) strlen(coder_info[i]->magick); j <= 11; j++)
 617       (void) FormatLocaleFile(file," ");
 618     if (coder_info[i]->name != (char *) NULL)
 619       (void) FormatLocaleFile(file,"%s",coder_info[i]->name);
 620     (void) FormatLocaleFile(file,"\n");
 621   }
 622   coder_info=(const CoderInfo **) RelinquishMagickMemory((void *) coder_info);
 623   (void) fflush(file);
 624   return(MagickTrue);
 625 }
 626 \f
 627 /*
 628 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 629 %                                                                             %
 630 %                                                                             %
 631 %                                                                             %
 632 +   L o a d C o d e r L i s t                                                 %
 633 %                                                                             %
 634 %                                                                             %
 635 %                                                                             %
 636 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 637 %
 638 %  LoadCoderList() loads the coder configuration file which provides a
 639 %  mapping between coder attributes and a coder name.
 640 %
 641 %  The format of the LoadCoderList coder is:
 642 %
 643 %      MagickBooleanType LoadCoderList(const char *xml,const char *filename,
 644 %        const size_t depth,ExceptionInfo *exception)
 645 %
 646 %  A description of each parameter follows:
 647 %
 648 %    o xml:  The coder list in XML format.
 649 %
 650 %    o filename:  The coder list filename.
 651 %
 652 %    o depth: depth of <include /> statements.
 653 %
 654 %    o exception: return any errors or warnings in this structure.
 655 %
 656 */
 657
 658 static void *DestroyCoderNode(void *coder_info)
 659 {
 660   register CoderInfo
 661     *p;
 662
 663   p=(CoderInfo *) coder_info;
 664   if (p->exempt == MagickFalse)
 665     {
 666       if (p->path != (char *) NULL)
 667         p->path=DestroyString(p->path);
 668       if (p->name != (char *) NULL)
 669         p->name=DestroyString(p->name);
 670       if (p->magick != (char *) NULL)
 671         p->magick=DestroyString(p->magick);
 672     }
 673   return(RelinquishMagickMemory(p));
 674 }
 675
 676 static MagickBooleanType LoadCoderList(const char *xml,const char *filename,
 677   const size_t depth,ExceptionInfo *exception)
 678 {
 679   char
 680     keyword[MaxTextExtent],
 681     *token;
 682
 683   const char
 684     *q;
 685
 686   CoderInfo
 687     *coder_info;
 688
 689   MagickBooleanType
 690     status;
 691
 692   /*
 693     Load the coder map file.
 694   */
 695   (void) LogMagickEvent(ConfigureEvent,GetMagickModule(),
 696     "Loading coder configuration file \"%s\" ...",filename);
 697   if (xml == (const char *) NULL)
 698     return(MagickFalse);
 699   if (coder_list == (SplayTreeInfo *) NULL)
 700     {
 701       coder_list=NewSplayTree(CompareSplayTreeString,RelinquishMagickMemory,
 702         DestroyCoderNode);
 703       if (coder_list == (SplayTreeInfo *) NULL)
 704         {
 705           ThrowFileException(exception,ResourceLimitError,
 706             "MemoryAllocationFailed",filename);
 707           return(MagickFalse);
 708         }
 709     }
 710   status=MagickTrue;
 711   coder_info=(CoderInfo *) NULL;
 712   token=AcquireString(xml);
 713   for (q=(char *) xml; *q != '\0'; )
 714   {
 715     /*
 716       Interpret XML.
 717     */
 718     GetMagickToken(q,&q,token);
 719     if (*token == '\0')
 720       break;
 721     (void) CopyMagickString(keyword,token,MaxTextExtent);
 722     if (LocaleNCompare(keyword,"<!DOCTYPE",9) == 0)
 723       {
 724         /*
 725           Doctype element.
 726         */
 727         while ((LocaleNCompare(q,"]>",2) != 0) && (*q != '\0'))
 728           GetMagickToken(q,&q,token);
 729         continue;
 730       }
 731     if (LocaleNCompare(keyword,"<!--",4) == 0)
 732       {
 733         /*
 734           Comment element.
 735         */
 736         while ((LocaleNCompare(q,"->",2) != 0) && (*q != '\0'))
 737           GetMagickToken(q,&q,token);
 738         continue;
 739       }
 740     if (LocaleCompare(keyword,"<include") == 0)
 741       {
 742         /*
 743           Include element.
 744         */
 745         while (((*token != '/') && (*(token+1) != '>')) && (*q != '\0'))
 746         {
 747           (void) CopyMagickString(keyword,token,MaxTextExtent);
 748           GetMagickToken(q,&q,token);
 749           if (*token != '=')
 750             continue;
 751           GetMagickToken(q,&q,token);
 752           if (LocaleCompare(keyword,"file") == 0)
 753             {
 754               if (depth > 200)
 755                 (void) ThrowMagickException(exception,GetMagickModule(),
 756                   ConfigureError,"IncludeNodeNestedTooDeeply","'%s'",token);
 757               else
 758                 {
 759                   char
 760                     path[MaxTextExtent],
 761                     *xml;
 762
 763                   GetPathComponent(filename,HeadPath,path);
 764                   if (*path != '\0')
 765                     (void) ConcatenateMagickString(path,DirectorySeparator,
 766                       MaxTextExtent);
 767                   if (*token == *DirectorySeparator)
 768                     (void) CopyMagickString(path,token,MaxTextExtent);
 769                   else
 770                     (void) ConcatenateMagickString(path,token,MaxTextExtent);
 771                   xml=FileToString(path,~0,exception);
 772                   if (xml != (char *) NULL)
 773                     {
 774                       status=LoadCoderList(xml,path,depth+1,exception);
 775                       xml=(char *) RelinquishMagickMemory(xml);
 776                     }
 777                 }
 778             }
 779         }
 780         continue;
 781       }
 782     if (LocaleCompare(keyword,"<coder") == 0)
 783       {
 784         /*
 785           Coder element.
 786         */
 787         coder_info=(CoderInfo *) AcquireMagickMemory(sizeof(*coder_info));
 788         if (coder_info == (CoderInfo *) NULL)
 789           ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
 790         (void) ResetMagickMemory(coder_info,0,sizeof(*coder_info));
 791         coder_info->path=ConstantString(filename);
 792         coder_info->exempt=MagickFalse;
 793         coder_info->signature=MagickSignature;
 794         continue;
 795       }
 796     if (coder_info == (CoderInfo *) NULL)
 797       continue;
 798     if (LocaleCompare(keyword,"/>") == 0)
 799       {
 800         status=AddValueToSplayTree(coder_list,ConstantString(
 801           coder_info->magick),coder_info);
 802         if (status == MagickFalse)
 803           (void) ThrowMagickException(exception,GetMagickModule(),
 804             ResourceLimitError,"MemoryAllocationFailed","'%s'",
 805             coder_info->magick);
 806         coder_info=(CoderInfo *) NULL;
 807       }
 808     GetMagickToken(q,(const char **) NULL,token);
 809     if (*token != '=')
 810       continue;
 811     GetMagickToken(q,&q,token);
 812     GetMagickToken(q,&q,token);
 813     switch (*keyword)
 814     {
 815       case 'M':
 816       case 'm':
 817       {
 818         if (LocaleCompare((char *) keyword,"magick") == 0)
 819           {
 820             coder_info->magick=ConstantString(token);
 821             break;
 822           }
 823         break;
 824       }
 825       case 'N':
 826       case 'n':
 827       {
 828         if (LocaleCompare((char *) keyword,"name") == 0)
 829           {
 830             coder_info->name=ConstantString(token);
 831             break;
 832           }
 833         break;
 834       }
 835       case 'S':
 836       case 's':
 837       {
 838         if (LocaleCompare((char *) keyword,"stealth") == 0)
 839           {
 840             coder_info->stealth=IsStringTrue(token);
 841             break;
 842           }
 843         break;
 844       }
 845       default:
 846         break;
 847     }
 848   }
 849   token=(char *) RelinquishMagickMemory(token);
 850   return(status);
 851 }
 852 \f
 853 /*
 854 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 855 %                                                                             %
 856 %                                                                             %
 857 %                                                                             %
 858 %  L o a d C o d e r L i s t s                                                %
 859 %                                                                             %
 860 %                                                                             %
 861 %                                                                             %
 862 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 863 %
 864 %  LoadCoderLists() loads one or more coder configuration file which
 865 %  provides a mapping between coder attributes and a coder name.
 866 %
 867 %  The format of the LoadCoderLists coder is:
 868 %
 869 %      MagickBooleanType LoadCoderLists(const char *filename,
 870 %        ExceptionInfo *exception)
 871 %
 872 %  A description of each parameter follows:
 873 %
 874 %    o filename: the font file name.
 875 %
 876 %    o exception: return any errors or warnings in this structure.
 877 %
 878 */
 879 static MagickBooleanType LoadCoderLists(const char *filename,
 880   ExceptionInfo *exception)
 881 {
 882   const StringInfo
 883     *option;
 884
 885   LinkedListInfo
 886     *options;
 887
 888   MagickStatusType
 889     status;
 890
 891   register ssize_t
 892     i;
 893
 894   /*
 895     Load built-in coder map.
 896   */
 897   status=MagickFalse;
 898   if (coder_list == (SplayTreeInfo *) NULL)
 899     {
 900       coder_list=NewSplayTree(CompareSplayTreeString,RelinquishMagickMemory,
 901         DestroyCoderNode);
 902       if (coder_list == (SplayTreeInfo *) NULL)
 903         {
 904           ThrowFileException(exception,ResourceLimitError,
 905             "MemoryAllocationFailed",filename);
 906           return(MagickFalse);
 907         }
 908     }
 909   for (i=0; i < (ssize_t) (sizeof(CoderMap)/sizeof(*CoderMap)); i++)
 910   {
 911     CoderInfo
 912       *coder_info;
 913
 914     register const CoderMapInfo
 915       *p;
 916
 917     p=CoderMap+i;
 918     coder_info=(CoderInfo *) AcquireMagickMemory(sizeof(*coder_info));
 919     if (coder_info == (CoderInfo *) NULL)
 920       {
 921         (void) ThrowMagickException(exception,GetMagickModule(),
 922           ResourceLimitError,"MemoryAllocationFailed","'%s'",coder_info->name);
 923         continue;
 924       }
 925     (void) ResetMagickMemory(coder_info,0,sizeof(*coder_info));
 926     coder_info->path=(char *) "[built-in]";
 927     coder_info->magick=(char *) p->magick;
 928     coder_info->name=(char *) p->name;
 929     coder_info->exempt=MagickTrue;
 930     coder_info->signature=MagickSignature;
 931     status=AddValueToSplayTree(coder_list,ConstantString(coder_info->magick),
 932       coder_info);
 933     if (status == MagickFalse)
 934       (void) ThrowMagickException(exception,GetMagickModule(),
 935         ResourceLimitError,"MemoryAllocationFailed","'%s'",coder_info->name);
 936   }
 937   /*
 938     Load external coder map.
 939   */
 940   options=GetConfigureOptions(filename,exception);
 941   option=(const StringInfo *) GetNextValueInLinkedList(options);
 942   while (option != (const StringInfo *) NULL)
 943   {
 944     status|=LoadCoderList((const char *) GetStringInfoDatum(option),
 945       GetStringInfoPath(option),0,exception);
 946     option=(const StringInfo *) GetNextValueInLinkedList(options);
 947   }
 948   options=DestroyConfigureOptions(options);
 949   return(status != 0 ? MagickTrue : MagickFalse);
 950 }