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 %                                   Cristy                                    %
  17 %                                 May 2001                                    %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2015 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 #include "MagickCore/xml-tree-private.h"
  63 \f
  64 /*
  65   Define declarations.
  66 */
  67 #define MagickCoderFilename  "coder.xml"
  68 \f
  69 /*
  70   Typedef declarations.
  71 */
  72 typedef struct _CoderMapInfo
  73 {
  74   const char
  75     *magick,
  76     *name;
  77 } CoderMapInfo;
  78 \f
  79 /*
  80   Static declarations.
  81 */
  82 static const CoderMapInfo
  83   CoderMap[] =
  84   {
  85     { "3FR", "DNG" },
  86     { "8BIM", "META" },
  87     { "8BIMTEXT", "META" },
  88     { "8BIMWTEXT", "META" },
  89     { "AFM", "TTF" },
  90     { "A", "RAW" },
  91     { "AI", "PDF" },
  92     { "APP1JPEG", "META" },
  93     { "APP1", "META" },
  94     { "ARW", "DNG" },
  95     { "AVI", "MPEG" },
  96     { "BIE", "JBIG" },
  97     { "BMP2", "BMP" },
  98     { "BMP3", "BMP" },
  99     { "B", "RAW" },
 100     { "BRF", "BRAILLE" },
 101     { "BGRA", "BGR" },
 102     { "CMYKA", "CMYK" },
 103     { "C", "RAW" },
 104     { "CAL", "CALS" },
 105     { "CANVAS", "XC" },
 106     { "CR2", "DNG" },
 107     { "CRW", "DNG" },
 108     { "CUR", "ICON" },
 109     { "DCR", "DNG" },
 110     { "DCX", "PCX" },
 111     { "DFONT", "TTF" },
 112     { "EPDF", "PDF" },
 113     { "EPI", "PS" },
 114     { "EPS2", "PS2" },
 115     { "EPS3", "PS3" },
 116     { "EPSF", "PS" },
 117     { "EPSI", "PS" },
 118     { "EPS", "PS" },
 119     { "EPT2", "EPT" },
 120     { "EPT3", "EPT" },
 121     { "ERF", "DNG" },
 122     { "EXIF", "META" },
 123     { "FILE", "URL" },
 124     { "FRACTAL", "PLASMA" },
 125     { "FTP", "URL" },
 126     { "FTS", "FITS" },
 127     { "G3", "FAX" },
 128     { "GIF87", "GIF" },
 129     { "G", "RAW" },
 130     { "GRANITE", "MAGICK" },
 131     { "GROUP4", "TIFF" },
 132     { "GV", "DOT" },
 133     { "IIQ", "DNG" },
 134     { "K25", "DNG" },
 135     { "KDC", "DNG" },
 136     { "H", "MAGICK" },
 137     { "HTM", "HTML" },
 138     { "HTTP", "URL" },
 139     { "HTTPS", "URL" },
 140     { "ICB", "TGA" },
 141     { "ICC", "META" },
 142     { "ICM", "META" },
 143     { "ICO", "ICON" },
 144     { "IMPLICIT", "***" },
 145     { "IPTC", "META" },
 146     { "IPTCTEXT", "META" },
 147     { "IPTCWTEXT", "META" },
 148     { "ISOBRL", "BRAILLE" },
 149     { "JBG", "JBIG" },
 150     { "JNG", "PNG" },
 151     { "JPC", "JP2" },
 152     { "JPT", "JP2" },
 153     { "JPM", "JP2" },
 154     { "J2C", "JP2" },
 155     { "J2K", "JP2" },
 156     { "JPE", "JPEG" },
 157     { "JPG", "JPEG" },
 158     { "JPX", "JP2" },
 159     { "K", "RAW" },
 160     { "LOGO", "MAGICK" },
 161     { "M2V", "MPEG" },
 162     { "M4V", "MPEG" },
 163     { "M", "RAW" },
 164     { "MNG", "PNG" },
 165     { "MOV", "MPEG" },
 166     { "MP4", "MPEG" },
 167     { "MPG", "MPEG" },
 168     { "MPRI", "MPR" },
 169     { "MEF", "DNG" },
 170     { "MRW", "DNG" },
 171     { "MSVG", "SVG" },
 172     { "NEF", "DNG" },
 173     { "NETSCAPE", "MAGICK" },
 174     { "NRW", "DNG" },
 175     { "O", "RAW" },
 176     { "ORF", "DNG" },
 177     { "OTF", "TTF" },
 178     { "P7", "PNM" },
 179     { "PAL", "UYVY" },
 180     { "PAM", "PNM" },
 181     { "PBM", "PNM" },
 182     { "PCDS", "PCD" },
 183     { "PDFA", "PDF" },
 184     { "PEF", "DNG" },
 185     { "PEF", "DNG" },
 186     { "PFA", "TTF" },
 187     { "PFB", "TTF" },
 188     { "PFM", "PNM" },
 189     { "PGM", "PNM" },
 190     { "PGX", "JP2" },
 191     { "PICON", "XPM" },
 192     { "PJPEG", "JPEG" },
 193     { "PM", "XPM" },
 194     { "PNG24", "PNG" },
 195     { "PNG32", "PNG" },
 196     { "PNG8", "PNG" },
 197     { "PPM", "PNM" },
 198     { "PSB", "PSD" },
 199     { "PTIF", "TIFF" },
 200     { "RADIAL-GRADIENT", "GRADIENT" },
 201     { "RAF", "DNG" },
 202     { "RAS", "SUN" },
 203     { "RAW", "DNG" },
 204     { "RGBA", "RGB" },
 205     { "RGBO", "RGB" },
 206     { "RMF", "DNG" },
 207     { "R", "RAW" },
 208     { "ROSE", "MAGICK" },
 209     { "RW2", "DNG" },
 210     { "SHTML", "HTML" },
 211     { "SIX", "SIXEL" },
 212     { "SPARSE-COLOR", "TXT" },
 213     { "SR2", "DNG" },
 214     { "SRF", "DNG" },
 215     { "SVGZ", "SVG" },
 216     { "TEXT", "TXT" },
 217     { "TIFF64", "TIFF" },
 218     { "TIF", "TIFF" },
 219     { "TTC", "TTF" },
 220     { "UBRL", "BRAILLE" },
 221     { "VDA", "TGA" },
 222     { "VST", "TGA" },
 223     { "WIZARD", "MAGICK" },
 224 #if defined(MAGICKCORE_WINGDI32_DELEGATE)
 225     { "WMF", "EMF" },
 226 #endif
 227     { "WMV", "MPEG" },
 228     { "WMZ", "WMF" },
 229     { "X3f", "DNG" },
 230     { "XMP", "META" },
 231     { "XTRNARRAY", "XTRN" },
 232     { "XTRNBLOB", "XTRN" },
 233     { "XTRNFILE", "XTRN" },
 234     { "XTRNIMAGE", "XTRN" },
 235     { "XV", "VIFF" },
 236     { "Y", "RAW" },
 237     { "YCbCrA", "YCbCr" }
 238  };
 239
 240 static SemaphoreInfo
 241   *coder_semaphore = (SemaphoreInfo *) NULL;
 242
 243 static SplayTreeInfo
 244   *coder_cache = (SplayTreeInfo *) NULL;
 245 \f
 246 /*
 247   Forward declarations.
 248 */
 249 static MagickBooleanType
 250   IsCoderTreeInstantiated(ExceptionInfo *),
 251   LoadCoderCache(SplayTreeInfo *,const char *,const char *,const size_t,
 252     ExceptionInfo *);
 253 \f
 254 /*
 255 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 256 %                                                                             %
 257 %                                                                             %
 258 %                                                                             %
 259 +  A c q u i r e C o d e r C a c h e                                          %
 260 %                                                                             %
 261 %                                                                             %
 262 %                                                                             %
 263 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 264 %
 265 %  AcquireCoderCache() caches one or more coder configurations which provides a
 266 %  mapping between coder attributes and a coder name.
 267 %
 268 %  The format of the AcquireCoderCache coder is:
 269 %
 270 %      SplayTreeInfo *AcquireCoderCache(const char *filename,
 271 %        ExceptionInfo *exception)
 272 %
 273 %  A description of each parameter follows:
 274 %
 275 %    o filename: the font file name.
 276 %
 277 %    o exception: return any errors or warnings in this structure.
 278 %
 279 */
 280
 281 static void *DestroyCoderNode(void *coder_info)
 282 {
 283   register CoderInfo
 284     *p;
 285
 286   p=(CoderInfo *) coder_info;
 287   if (p->exempt == MagickFalse)
 288     {
 289       if (p->path != (char *) NULL)
 290         p->path=DestroyString(p->path);
 291       if (p->name != (char *) NULL)
 292         p->name=DestroyString(p->name);
 293       if (p->magick != (char *) NULL)
 294         p->magick=DestroyString(p->magick);
 295     }
 296   return(RelinquishMagickMemory(p));
 297 }
 298
 299 static SplayTreeInfo *AcquireCoderCache(const char *filename,
 300   ExceptionInfo *exception)
 301 {
 302   const StringInfo
 303     *option;
 304
 305   LinkedListInfo
 306     *options;
 307
 308   MagickStatusType
 309     status;
 310
 311   register ssize_t
 312     i;
 313
 314   SplayTreeInfo
 315     *coder_cache;
 316
 317   /*
 318     Load external coder map.
 319   */
 320   coder_cache=NewSplayTree(CompareSplayTreeString,RelinquishMagickMemory,
 321     DestroyCoderNode);
 322   if (coder_cache == (SplayTreeInfo *) NULL)
 323     ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
 324   status=MagickTrue;
 325   options=GetConfigureOptions(filename,exception);
 326   option=(const StringInfo *) GetNextValueInLinkedList(options);
 327   while (option != (const StringInfo *) NULL)
 328   {
 329     status&=LoadCoderCache(coder_cache,(const char *)
 330       GetStringInfoDatum(option),GetStringInfoPath(option),0,exception);
 331     option=(const StringInfo *) GetNextValueInLinkedList(options);
 332   }
 333   options=DestroyConfigureOptions(options);
 334   /*
 335     Load built-in coder map.
 336   */
 337   for (i=0; i < (ssize_t) (sizeof(CoderMap)/sizeof(*CoderMap)); i++)
 338   {
 339     CoderInfo
 340       *coder_info;
 341
 342     register const CoderMapInfo
 343       *p;
 344
 345     p=CoderMap+i;
 346     coder_info=(CoderInfo *) AcquireMagickMemory(sizeof(*coder_info));
 347     if (coder_info == (CoderInfo *) NULL)
 348       {
 349         (void) ThrowMagickException(exception,GetMagickModule(),
 350           ResourceLimitError,"MemoryAllocationFailed","`%s'",p->name);
 351         continue;
 352       }
 353     (void) ResetMagickMemory(coder_info,0,sizeof(*coder_info));
 354     coder_info->path=(char *) "[built-in]";
 355     coder_info->magick=(char *) p->magick;
 356     coder_info->name=(char *) p->name;
 357     coder_info->exempt=MagickTrue;
 358     coder_info->signature=MagickSignature;
 359     status&=AddValueToSplayTree(coder_cache,ConstantString(coder_info->magick),
 360       coder_info);
 361     if (status == MagickFalse)
 362       (void) ThrowMagickException(exception,GetMagickModule(),
 363         ResourceLimitError,"MemoryAllocationFailed","`%s'",coder_info->name);
 364   }
 365   return(coder_cache);
 366 }
 367 \f
 368 /*
 369 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 370 %                                                                             %
 371 %                                                                             %
 372 %                                                                             %
 373 +   C o d e r C o m p o n e n t G e n e s i s                                 %
 374 %                                                                             %
 375 %                                                                             %
 376 %                                                                             %
 377 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 378 %
 379 %  CoderComponentGenesis() instantiates the coder component.
 380 %
 381 %  The format of the CoderComponentGenesis method is:
 382 %
 383 %      MagickBooleanType CoderComponentGenesis(void)
 384 %
 385 */
 386 MagickPrivate MagickBooleanType CoderComponentGenesis(void)
 387 {
 388   if (coder_semaphore == (SemaphoreInfo *) NULL)
 389     coder_semaphore=AcquireSemaphoreInfo();
 390   return(MagickTrue);
 391 }
 392 \f
 393 /*
 394 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 395 %                                                                             %
 396 %                                                                             %
 397 %                                                                             %
 398 +   C o d e r C o m p o n e n t T e r m i n u s                               %
 399 %                                                                             %
 400 %                                                                             %
 401 %                                                                             %
 402 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 403 %
 404 %  CoderComponentTerminus() destroys the coder component.
 405 %
 406 %  The format of the CoderComponentTerminus method is:
 407 %
 408 %      CoderComponentTerminus(void)
 409 %
 410 */
 411 MagickPrivate void CoderComponentTerminus(void)
 412 {
 413   if (coder_semaphore == (SemaphoreInfo *) NULL)
 414     ActivateSemaphoreInfo(&coder_semaphore);
 415   LockSemaphoreInfo(coder_semaphore);
 416   if (coder_cache != (SplayTreeInfo *) NULL)
 417     coder_cache=DestroySplayTree(coder_cache);
 418   UnlockSemaphoreInfo(coder_semaphore);
 419   RelinquishSemaphoreInfo(&coder_semaphore);
 420 }
 421 \f
 422 /*
 423 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 424 %                                                                             %
 425 %                                                                             %
 426 %                                                                             %
 427 +   G e t C o d e r I n f o                                                   %
 428 %                                                                             %
 429 %                                                                             %
 430 %                                                                             %
 431 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 432 %
 433 %  GetCoderInfo searches the coder list for the specified name and if found
 434 %  returns attributes for that coder.
 435 %
 436 %  The format of the GetCoderInfo method is:
 437 %
 438 %      const CoderInfo *GetCoderInfo(const char *name,ExceptionInfo *exception)
 439 %
 440 %  A description of each parameter follows:
 441 %
 442 %    o name: the coder name.
 443 %
 444 %    o exception: return any errors or warnings in this structure.
 445 %
 446 */
 447 MagickExport const CoderInfo *GetCoderInfo(const char *name,
 448   ExceptionInfo *exception)
 449 {
 450   const CoderInfo
 451     *coder_info;
 452
 453   assert(exception != (ExceptionInfo *) NULL);
 454   if (IsCoderTreeInstantiated(exception) == MagickFalse)
 455     return((const CoderInfo *) NULL);
 456   LockSemaphoreInfo(coder_semaphore);
 457   if ((name == (const char *) NULL) || (LocaleCompare(name,"*") == 0))
 458     {
 459       ResetSplayTreeIterator(coder_cache);
 460       coder_info=(const CoderInfo *) GetNextValueInSplayTree(coder_cache);
 461       UnlockSemaphoreInfo(coder_semaphore);
 462       return(coder_info);
 463     }
 464   coder_info=(const CoderInfo *) GetValueFromSplayTree(coder_cache,name);
 465   UnlockSemaphoreInfo(coder_semaphore);
 466   return(coder_info);
 467 }
 468 \f
 469 /*
 470 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 471 %                                                                             %
 472 %                                                                             %
 473 %                                                                             %
 474 %   G e t C o d e r I n f o L i s t                                           %
 475 %                                                                             %
 476 %                                                                             %
 477 %                                                                             %
 478 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 479 %
 480 %  GetCoderInfoList() returns any coder_map that match the specified pattern.
 481 %  The format of the GetCoderInfoList function is:
 482 %
 483 %      const CoderInfo **GetCoderInfoList(const char *pattern,
 484 %        size_t *number_coders,ExceptionInfo *exception)
 485 %
 486 %  A description of each parameter follows:
 487 %
 488 %    o pattern: Specifies a pointer to a text string containing a pattern.
 489 %
 490 %    o number_coders:  This integer returns the number of coders in the list.
 491 %
 492 %    o exception: return any errors or warnings in this structure.
 493 %
 494 */
 495
 496 static int CoderInfoCompare(const void *x,const void *y)
 497 {
 498   const CoderInfo
 499     **p,
 500     **q;
 501
 502   p=(const CoderInfo **) x,
 503   q=(const CoderInfo **) y;
 504   if (LocaleCompare((*p)->path,(*q)->path) == 0)
 505     return(LocaleCompare((*p)->name,(*q)->name));
 506   return(LocaleCompare((*p)->path,(*q)->path));
 507 }
 508
 509 MagickExport const CoderInfo **GetCoderInfoList(const char *pattern,
 510   size_t *number_coders,ExceptionInfo *exception)
 511 {
 512   const CoderInfo
 513     **coder_map;
 514
 515   register const CoderInfo
 516     *p;
 517
 518   register ssize_t
 519     i;
 520
 521   /*
 522     Allocate coder list.
 523   */
 524   assert(pattern != (char *) NULL);
 525   (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",pattern);
 526   assert(number_coders != (size_t *) NULL);
 527   *number_coders=0;
 528   p=GetCoderInfo("*",exception);
 529   if (p == (const CoderInfo *) NULL)
 530     return((const CoderInfo **) NULL);
 531   coder_map=(const CoderInfo **) AcquireQuantumMemory((size_t)
 532     GetNumberOfNodesInSplayTree(coder_cache)+1UL,sizeof(*coder_map));
 533   if (coder_map == (const CoderInfo **) NULL)
 534     return((const CoderInfo **) NULL);
 535   /*
 536     Generate coder list.
 537   */
 538   LockSemaphoreInfo(coder_semaphore);
 539   ResetSplayTreeIterator(coder_cache);
 540   p=(const CoderInfo *) GetNextValueInSplayTree(coder_cache);
 541   for (i=0; p != (const CoderInfo *) NULL; )
 542   {
 543     if ((p->stealth == MagickFalse) &&
 544         (GlobExpression(p->name,pattern,MagickFalse) != MagickFalse))
 545       coder_map[i++]=p;
 546     p=(const CoderInfo *) GetNextValueInSplayTree(coder_cache);
 547   }
 548   UnlockSemaphoreInfo(coder_semaphore);
 549   qsort((void *) coder_map,(size_t) i,sizeof(*coder_map),CoderInfoCompare);
 550   coder_map[i]=(CoderInfo *) NULL;
 551   *number_coders=(size_t) i;
 552   return(coder_map);
 553 }
 554 \f
 555 /*
 556 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 557 %                                                                             %
 558 %                                                                             %
 559 %                                                                             %
 560 %   G e t C o d e r L i s t                                                   %
 561 %                                                                             %
 562 %                                                                             %
 563 %                                                                             %
 564 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 565 %
 566 %  GetCoderList() returns any coder_map that match the specified pattern.
 567 %
 568 %  The format of the GetCoderList function is:
 569 %
 570 %      char **GetCoderList(const char *pattern,size_t *number_coders,
 571 %        ExceptionInfo *exception)
 572 %
 573 %  A description of each parameter follows:
 574 %
 575 %    o pattern: Specifies a pointer to a text string containing a pattern.
 576 %
 577 %    o number_coders:  This integer returns the number of coders in the list.
 578 %
 579 %    o exception: return any errors or warnings in this structure.
 580 %
 581 */
 582
 583 static int CoderCompare(const void *x,const void *y)
 584 {
 585   register const char
 586     **p,
 587     **q;
 588
 589   p=(const char **) x;
 590   q=(const char **) y;
 591   return(LocaleCompare(*p,*q));
 592 }
 593
 594 MagickExport char **GetCoderList(const char *pattern,
 595   size_t *number_coders,ExceptionInfo *exception)
 596 {
 597   char
 598     **coder_map;
 599
 600   register const CoderInfo
 601     *p;
 602
 603   register ssize_t
 604     i;
 605
 606   /*
 607     Allocate coder list.
 608   */
 609   assert(pattern != (char *) NULL);
 610   (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",pattern);
 611   assert(number_coders != (size_t *) NULL);
 612   *number_coders=0;
 613   p=GetCoderInfo("*",exception);
 614   if (p == (const CoderInfo *) NULL)
 615     return((char **) NULL);
 616   coder_map=(char **) AcquireQuantumMemory((size_t)
 617     GetNumberOfNodesInSplayTree(coder_cache)+1UL,sizeof(*coder_map));
 618   if (coder_map == (char **) NULL)
 619     return((char **) NULL);
 620   /*
 621     Generate coder list.
 622   */
 623   LockSemaphoreInfo(coder_semaphore);
 624   ResetSplayTreeIterator(coder_cache);
 625   p=(const CoderInfo *) GetNextValueInSplayTree(coder_cache);
 626   for (i=0; p != (const CoderInfo *) NULL; )
 627   {
 628     if ((p->stealth == MagickFalse) &&
 629         (GlobExpression(p->name,pattern,MagickFalse) != MagickFalse))
 630       coder_map[i++]=ConstantString(p->name);
 631     p=(const CoderInfo *) GetNextValueInSplayTree(coder_cache);
 632   }
 633   UnlockSemaphoreInfo(coder_semaphore);
 634   qsort((void *) coder_map,(size_t) i,sizeof(*coder_map),CoderCompare);
 635   coder_map[i]=(char *) NULL;
 636   *number_coders=(size_t) i;
 637   return(coder_map);
 638 }
 639 \f
 640 /*
 641 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 642 %                                                                             %
 643 %                                                                             %
 644 %                                                                             %
 645 +   I s C o d e r T r e e I n s t a n t i a t e d                             %
 646 %                                                                             %
 647 %                                                                             %
 648 %                                                                             %
 649 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 650 %
 651 %  IsCoderTreeInstantiated() determines if the coder tree is instantiated.  If
 652 %  not, it instantiates the tree and returns it.
 653 %
 654 %  The format of the IsCoderInstantiated method is:
 655 %
 656 %      MagickBooleanType IsCoderTreeInstantiated(ExceptionInfo *exception)
 657 %
 658 %  A description of each parameter follows.
 659 %
 660 %    o exception: return any errors or warnings in this structure.
 661 %
 662 */
 663 static MagickBooleanType IsCoderTreeInstantiated(ExceptionInfo *exception)
 664 {
 665   if (coder_cache == (SplayTreeInfo *) NULL)
 666     {
 667       if (coder_semaphore == (SemaphoreInfo *) NULL)
 668         ActivateSemaphoreInfo(&coder_semaphore);
 669       LockSemaphoreInfo(coder_semaphore);
 670       if (coder_cache == (SplayTreeInfo *) NULL)
 671         coder_cache=AcquireCoderCache(MagickCoderFilename,exception);
 672       UnlockSemaphoreInfo(coder_semaphore);
 673     }
 674   return(coder_cache != (SplayTreeInfo *) NULL ? MagickTrue : MagickFalse);
 675 }
 676 \f
 677 /*
 678 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 679 %                                                                             %
 680 %                                                                             %
 681 %                                                                             %
 682 %  L i s t C o d e r I n f o                                                  %
 683 %                                                                             %
 684 %                                                                             %
 685 %                                                                             %
 686 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 687 %
 688 %  ListCoderInfo() lists the coder info to a file.
 689 %
 690 %  The format of the ListCoderInfo coder is:
 691 %
 692 %      MagickBooleanType ListCoderInfo(FILE *file,ExceptionInfo *exception)
 693 %
 694 %  A description of each parameter follows.
 695 %
 696 %    o file:  An pointer to a FILE.
 697 %
 698 %    o exception: return any errors or warnings in this structure.
 699 %
 700 */
 701 MagickExport MagickBooleanType ListCoderInfo(FILE *file,
 702   ExceptionInfo *exception)
 703 {
 704   const char
 705     *path;
 706
 707   const CoderInfo
 708     **coder_info;
 709
 710   register ssize_t
 711     i;
 712
 713   size_t
 714     number_coders;
 715
 716   ssize_t
 717     j;
 718
 719   if (file == (const FILE *) NULL)
 720     file=stdout;
 721   coder_info=GetCoderInfoList("*",&number_coders,exception);
 722   if (coder_info == (const CoderInfo **) NULL)
 723     return(MagickFalse);
 724   path=(const char *) NULL;
 725   for (i=0; i < (ssize_t) number_coders; i++)
 726   {
 727     if (coder_info[i]->stealth != MagickFalse)
 728       continue;
 729     if ((path == (const char *) NULL) ||
 730         (LocaleCompare(path,coder_info[i]->path) != 0))
 731       {
 732         if (coder_info[i]->path != (char *) NULL)
 733           (void) FormatLocaleFile(file,"\nPath: %s\n\n",coder_info[i]->path);
 734         (void) FormatLocaleFile(file,"Magick      Coder\n");
 735         (void) FormatLocaleFile(file,
 736           "-------------------------------------------------"
 737           "------------------------------\n");
 738       }
 739     path=coder_info[i]->path;
 740     (void) FormatLocaleFile(file,"%s",coder_info[i]->magick);
 741     for (j=(ssize_t) strlen(coder_info[i]->magick); j <= 11; j++)
 742       (void) FormatLocaleFile(file," ");
 743     if (coder_info[i]->name != (char *) NULL)
 744       (void) FormatLocaleFile(file,"%s",coder_info[i]->name);
 745     (void) FormatLocaleFile(file,"\n");
 746   }
 747   coder_info=(const CoderInfo **) RelinquishMagickMemory((void *) coder_info);
 748   (void) fflush(file);
 749   return(MagickTrue);
 750 }
 751 \f
 752 /*
 753 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 754 %                                                                             %
 755 %                                                                             %
 756 %                                                                             %
 757 +   L o a d C o d e r L i s t                                                 %
 758 %                                                                             %
 759 %                                                                             %
 760 %                                                                             %
 761 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 762 %
 763 %  LoadCoderCache() loads the coder configurations which provides a
 764 %  mapping between coder attributes and a coder name.
 765 %
 766 %  The format of the LoadCoderCache coder is:
 767 %
 768 %      MagickBooleanType LoadCoderCache(SplayTreeInfo *coder_cache,
 769 %        const char *xml,const char *filename,const size_t depth,
 770 %        ExceptionInfo *exception)
 771 %
 772 %  A description of each parameter follows:
 773 %
 774 %    o xml:  The coder list in XML format.
 775 %
 776 %    o filename:  The coder list filename.
 777 %
 778 %    o depth: depth of <include /> statements.
 779 %
 780 %    o exception: return any errors or warnings in this structure.
 781 %
 782 */
 783 static MagickBooleanType LoadCoderCache(SplayTreeInfo *coder_cache,
 784   const char *xml,const char *filename,const size_t depth,
 785   ExceptionInfo *exception)
 786 {
 787   char
 788     keyword[MaxTextExtent],
 789     *token;
 790
 791   const char
 792     *q;
 793
 794   CoderInfo
 795     *coder_info;
 796
 797   MagickStatusType
 798     status;
 799
 800   /*
 801     Load the coder map file.
 802   */
 803   (void) LogMagickEvent(ConfigureEvent,GetMagickModule(),
 804     "Loading coder configuration file \"%s\" ...",filename);
 805   if (xml == (const char *) NULL)
 806     return(MagickFalse);
 807   status=MagickTrue;
 808   coder_info=(CoderInfo *) NULL;
 809   token=AcquireString(xml);
 810   for (q=(char *) xml; *q != '\0'; )
 811   {
 812     /*
 813       Interpret XML.
 814     */
 815     GetMagickToken(q,&q,token);
 816     if (*token == '\0')
 817       break;
 818     (void) CopyMagickString(keyword,token,MaxTextExtent);
 819     if (LocaleNCompare(keyword,"<!DOCTYPE",9) == 0)
 820       {
 821         /*
 822           Doctype element.
 823         */
 824         while ((LocaleNCompare(q,"]>",2) != 0) && (*q != '\0'))
 825           GetMagickToken(q,&q,token);
 826         continue;
 827       }
 828     if (LocaleNCompare(keyword,"<!--",4) == 0)
 829       {
 830         /*
 831           Comment element.
 832         */
 833         while ((LocaleNCompare(q,"->",2) != 0) && (*q != '\0'))
 834           GetMagickToken(q,&q,token);
 835         continue;
 836       }
 837     if (LocaleCompare(keyword,"<include") == 0)
 838       {
 839         /*
 840           Include element.
 841         */
 842         while (((*token != '/') && (*(token+1) != '>')) && (*q != '\0'))
 843         {
 844           (void) CopyMagickString(keyword,token,MaxTextExtent);
 845           GetMagickToken(q,&q,token);
 846           if (*token != '=')
 847             continue;
 848           GetMagickToken(q,&q,token);
 849           if (LocaleCompare(keyword,"file") == 0)
 850             {
 851               if (depth > 200)
 852                 (void) ThrowMagickException(exception,GetMagickModule(),
 853                   ConfigureError,"IncludeNodeNestedTooDeeply","`%s'",token);
 854               else
 855                 {
 856                   char
 857                     path[MaxTextExtent],
 858                     *xml;
 859
 860                   GetPathComponent(filename,HeadPath,path);
 861                   if (*path != '\0')
 862                     (void) ConcatenateMagickString(path,DirectorySeparator,
 863                       MaxTextExtent);
 864                   if (*token == *DirectorySeparator)
 865                     (void) CopyMagickString(path,token,MaxTextExtent);
 866                   else
 867                     (void) ConcatenateMagickString(path,token,MaxTextExtent);
 868                   xml=FileToXML(path,~0UL);
 869                   if (xml != (char *) NULL)
 870                     {
 871                       status&=LoadCoderCache(coder_cache,xml,path,depth+1,
 872                         exception);
 873                       xml=(char *) RelinquishMagickMemory(xml);
 874                     }
 875                 }
 876             }
 877         }
 878         continue;
 879       }
 880     if (LocaleCompare(keyword,"<coder") == 0)
 881       {
 882         /*
 883           Coder element.
 884         */
 885         coder_info=(CoderInfo *) AcquireMagickMemory(sizeof(*coder_info));
 886         if (coder_info == (CoderInfo *) NULL)
 887           ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
 888         (void) ResetMagickMemory(coder_info,0,sizeof(*coder_info));
 889         coder_info->path=ConstantString(filename);
 890         coder_info->exempt=MagickFalse;
 891         coder_info->signature=MagickSignature;
 892         continue;
 893       }
 894     if (coder_info == (CoderInfo *) NULL)
 895       continue;
 896     if (LocaleCompare(keyword,"/>") == 0)
 897       {
 898         status=AddValueToSplayTree(coder_cache,ConstantString(
 899           coder_info->magick),coder_info);
 900         if (status == MagickFalse)
 901           (void) ThrowMagickException(exception,GetMagickModule(),
 902             ResourceLimitError,"MemoryAllocationFailed","`%s'",
 903             coder_info->magick);
 904         coder_info=(CoderInfo *) NULL;
 905         continue;
 906       }
 907     GetMagickToken(q,(const char **) NULL,token);
 908     if (*token != '=')
 909       continue;
 910     GetMagickToken(q,&q,token);
 911     GetMagickToken(q,&q,token);
 912     switch (*keyword)
 913     {
 914       case 'M':
 915       case 'm':
 916       {
 917         if (LocaleCompare((char *) keyword,"magick") == 0)
 918           {
 919             coder_info->magick=ConstantString(token);
 920             break;
 921           }
 922         break;
 923       }
 924       case 'N':
 925       case 'n':
 926       {
 927         if (LocaleCompare((char *) keyword,"name") == 0)
 928           {
 929             coder_info->name=ConstantString(token);
 930             break;
 931           }
 932         break;
 933       }
 934       case 'S':
 935       case 's':
 936       {
 937         if (LocaleCompare((char *) keyword,"stealth") == 0)
 938           {
 939             coder_info->stealth=IsStringTrue(token);
 940             break;
 941           }
 942         break;
 943       }
 944       default:
 945         break;
 946     }
 947   }
 948   token=(char *) RelinquishMagickMemory(token);
 949   return(status != 0 ? MagickTrue : MagickFalse);
 950 }