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

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                                                                             %
   6 %            PPPP    RRRR    OOO   PPPP   EEEEE  RRRR   TTTTT  Y   Y          %
   7 %            P   P   R   R  O   O  P   P  E      R   R    T     Y Y           %
   8 %            PPPP    RRRR   O   O  PPPP   EEE    RRRR     T      Y            %
   9 %            P       R R    O   O  P      E      R R      T      Y            %
  10 %            P       R  R    OOO   P      EEEEE  R  R     T      Y            %
  11 %                                                                             %
  12 %                                                                             %
  13 %                         MagickCore Property Methods                         %
  14 %                                                                             %
  15 %                              Software Design                                %
  16 %                                John Cristy                                  %
  17 %                                 March 2000                                  %
  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 */
  39 \f
  40 /*
  41   Include declarations.
  42 */
  43 #include "MagickCore/studio.h"
  44 #include "MagickCore/artifact.h"
  45 #include "MagickCore/attribute.h"
  46 #include "MagickCore/cache.h"
  47 #include "MagickCore/color.h"
  48 #include "MagickCore/color-private.h"
  49 #include "MagickCore/colorspace-private.h"
  50 #include "MagickCore/compare.h"
  51 #include "MagickCore/constitute.h"
  52 #include "MagickCore/draw.h"
  53 #include "MagickCore/effect.h"
  54 #include "MagickCore/exception.h"
  55 #include "MagickCore/exception-private.h"
  56 #include "MagickCore/fx.h"
  57 #include "MagickCore/fx-private.h"
  58 #include "MagickCore/gem.h"
  59 #include "MagickCore/geometry.h"
  60 #include "MagickCore/histogram.h"
  61 #include "MagickCore/image.h"
  62 #include "MagickCore/layer.h"
  63 #include "MagickCore/locale-private.h"
  64 #include "MagickCore/list.h"
  65 #include "MagickCore/magick.h"
  66 #include "MagickCore/memory_.h"
  67 #include "MagickCore/monitor.h"
  68 #include "MagickCore/montage.h"
  69 #include "MagickCore/option.h"
  70 #include "MagickCore/profile.h"
  71 #include "MagickCore/property.h"
  72 #include "MagickCore/quantum.h"
  73 #include "MagickCore/resource_.h"
  74 #include "MagickCore/splay-tree.h"
  75 #include "MagickCore/signature.h"
  76 #include "MagickCore/statistic.h"
  77 #include "MagickCore/string_.h"
  78 #include "MagickCore/string-private.h"
  79 #include "MagickCore/token.h"
  80 #include "MagickCore/token-private.h"
  81 #include "MagickCore/utility.h"
  82 #include "MagickCore/utility-private.h"
  83 #include "MagickCore/version.h"
  84 #include "MagickCore/xml-tree.h"
  85 #include "MagickCore/xml-tree-private.h"
  86 \f
  87 /*
  88 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  89 %                                                                             %
  90 %                                                                             %
  91 %                                                                             %
  92 %   C l o n e I m a g e P r o p e r t i e s                                   %
  93 %                                                                             %
  94 %                                                                             %
  95 %                                                                             %
  96 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  97 %
  98 %  CloneImageProperties() clones all the image properties to another image.
  99 %
 100 %  The format of the CloneImageProperties method is:
 101 %
 102 %      MagickBooleanType CloneImageProperties(Image *image,
 103 %        const Image *clone_image)
 104 %
 105 %  A description of each parameter follows:
 106 %
 107 %    o image: the image.
 108 %
 109 %    o clone_image: the clone image.
 110 %
 111 */
 112 MagickExport MagickBooleanType CloneImageProperties(Image *image,
 113   const Image *clone_image)
 114 {
 115   assert(image != (Image *) NULL);
 116   assert(image->signature == MagickSignature);
 117   if( IfMagickTrue(image->debug) )
 118     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 119   assert(clone_image != (const Image *) NULL);
 120   assert(clone_image->signature == MagickSignature);
 121   if( IfMagickTrue(clone_image->debug) )
 122     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 123       clone_image->filename);
 124   (void) CopyMagickString(image->filename,clone_image->filename,MaxTextExtent);
 125   (void) CopyMagickString(image->magick_filename,clone_image->magick_filename,
 126     MaxTextExtent);
 127   image->compression=clone_image->compression;
 128   image->quality=clone_image->quality;
 129   image->depth=clone_image->depth;
 130   image->background_color=clone_image->background_color;
 131   image->border_color=clone_image->border_color;
 132   image->matte_color=clone_image->matte_color;
 133   image->transparent_color=clone_image->transparent_color;
 134   image->gamma=clone_image->gamma;
 135   image->chromaticity=clone_image->chromaticity;
 136   image->rendering_intent=clone_image->rendering_intent;
 137   image->black_point_compensation=clone_image->black_point_compensation;
 138   image->units=clone_image->units;
 139   image->montage=(char *) NULL;
 140   image->directory=(char *) NULL;
 141   (void) CloneString(&image->geometry,clone_image->geometry);
 142   image->offset=clone_image->offset;
 143   image->resolution.x=clone_image->resolution.x;
 144   image->resolution.y=clone_image->resolution.y;
 145   image->page=clone_image->page;
 146   image->tile_offset=clone_image->tile_offset;
 147   image->extract_info=clone_image->extract_info;
 148   image->filter=clone_image->filter;
 149   image->fuzz=clone_image->fuzz;
 150   image->interlace=clone_image->interlace;
 151   image->interpolate=clone_image->interpolate;
 152   image->endian=clone_image->endian;
 153   image->gravity=clone_image->gravity;
 154   image->compose=clone_image->compose;
 155   image->scene=clone_image->scene;
 156   image->orientation=clone_image->orientation;
 157   image->dispose=clone_image->dispose;
 158   image->delay=clone_image->delay;
 159   image->ticks_per_second=clone_image->ticks_per_second;
 160   image->iterations=clone_image->iterations;
 161   image->total_colors=clone_image->total_colors;
 162   image->taint=clone_image->taint;
 163   image->progress_monitor=clone_image->progress_monitor;
 164   image->client_data=clone_image->client_data;
 165   image->start_loop=clone_image->start_loop;
 166   image->error=clone_image->error;
 167   image->signature=clone_image->signature;
 168   if (clone_image->properties != (void *) NULL)
 169     {
 170       if (image->properties != (void *) NULL)
 171         DestroyImageProperties(image);
 172       image->properties=CloneSplayTree((SplayTreeInfo *)
 173         clone_image->properties,(void *(*)(void *)) ConstantString,
 174         (void *(*)(void *)) ConstantString);
 175     }
 176   return(MagickTrue);
 177 }
 178 \f
 179 /*
 180 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 181 %                                                                             %
 182 %                                                                             %
 183 %                                                                             %
 184 %   D e f i n e I m a g e P r o p e r t y                                     %
 185 %                                                                             %
 186 %                                                                             %
 187 %                                                                             %
 188 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 189 %
 190 %  DefineImageProperty() associates an assignment string of the form
 191 %  "key=value" with per-image artifact. It is equivelent to
 192 %  SetImageProperity().
 193 %
 194 %  The format of the DefineImageProperty method is:
 195 %
 196 %      MagickBooleanType DefineImageProperty(Image *image,
 197 %        const char *property,ExceptionInfo *exception)
 198 %
 199 %  A description of each parameter follows:
 200 %
 201 %    o image: the image.
 202 %
 203 %    o property: the image property.
 204 %
 205 %    o exception: return any errors or warnings in this structure.
 206 %
 207 */
 208 MagickExport MagickBooleanType DefineImageProperty(Image *image,
 209   const char *property,ExceptionInfo *exception)
 210 {
 211   char
 212     key[MaxTextExtent],
 213     value[MaxTextExtent];
 214
 215   register char
 216     *p;
 217
 218   assert(image != (Image *) NULL);
 219   assert(property != (const char *) NULL);
 220   (void) CopyMagickString(key,property,MaxTextExtent-1);
 221   for (p=key; *p != '\0'; p++)
 222     if (*p == '=')
 223       break;
 224   *value='\0';
 225   if (*p == '=')
 226     (void) CopyMagickString(value,p+1,MaxTextExtent);
 227   *p='\0';
 228   return(SetImageProperty(image,key,value,exception));
 229 }
 230 \f
 231 /*
 232 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 233 %                                                                             %
 234 %                                                                             %
 235 %                                                                             %
 236 %   D e l e t e I m a g e P r o p e r t y                                     %
 237 %                                                                             %
 238 %                                                                             %
 239 %                                                                             %
 240 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 241 %
 242 %  DeleteImageProperty() deletes an image property.
 243 %
 244 %  The format of the DeleteImageProperty method is:
 245 %
 246 %      MagickBooleanType DeleteImageProperty(Image *image,const char *property)
 247 %
 248 %  A description of each parameter follows:
 249 %
 250 %    o image: the image.
 251 %
 252 %    o property: the image property.
 253 %
 254 */
 255 MagickExport MagickBooleanType DeleteImageProperty(Image *image,
 256   const char *property)
 257 {
 258   assert(image != (Image *) NULL);
 259   assert(image->signature == MagickSignature);
 260   if( IfMagickTrue(image->debug) )
 261     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 262       image->filename);
 263   if (image->properties == (void *) NULL)
 264     return(MagickFalse);
 265   return(DeleteNodeFromSplayTree((SplayTreeInfo *) image->properties,property));
 266 }
 267 \f
 268 /*
 269 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 270 %                                                                             %
 271 %                                                                             %
 272 %                                                                             %
 273 %   D e s t r o y I m a g e P r o p e r t i e s                               %
 274 %                                                                             %
 275 %                                                                             %
 276 %                                                                             %
 277 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 278 %
 279 %  DestroyImageProperties() destroys all properities and associated memory
 280 %  attached to the given image.
 281 %
 282 %  The format of the DestroyDefines method is:
 283 %
 284 %      void DestroyImageProperties(Image *image)
 285 %
 286 %  A description of each parameter follows:
 287 %
 288 %    o image: the image.
 289 %
 290 */
 291 MagickExport void DestroyImageProperties(Image *image)
 292 {
 293   assert(image != (Image *) NULL);
 294   assert(image->signature == MagickSignature);
 295   if( IfMagickTrue(image->debug) )
 296     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
 297       image->filename);
 298   if (image->properties != (void *) NULL)
 299     image->properties=(void *) DestroySplayTree((SplayTreeInfo *)
 300       image->properties);
 301 }
 302 \f
 303 /*
 304 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 305 %                                                                             %
 306 %                                                                             %
 307 %                                                                             %
 308 %  F o r m a t I m a g e P r o p e r t y                                      %
 309 %                                                                             %
 310 %                                                                             %
 311 %                                                                             %
 312 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 313 %
 314 %  FormatImageProperty() permits formatted property/value pairs to be saved as
 315 %  an image property.
 316 %
 317 %  The format of the FormatImageProperty method is:
 318 %
 319 %      MagickBooleanType FormatImageProperty(Image *image,const char *property,
 320 %        const char *format,...)
 321 %
 322 %  A description of each parameter follows.
 323 %
 324 %   o  image:  The image.
 325 %
 326 %   o  property:  The attribute property.
 327 %
 328 %   o  format:  A string describing the format to use to write the remaining
 329 %      arguments.
 330 %
 331 */
 332 MagickExport MagickBooleanType FormatImageProperty(Image *image,
 333   const char *property,const char *format,...)
 334 {
 335   char
 336     value[MaxTextExtent];
 337
 338   ExceptionInfo
 339     *exception;
 340
 341   MagickBooleanType
 342     status;
 343
 344   ssize_t
 345     n;
 346
 347   va_list
 348     operands;
 349
 350   va_start(operands,format);
 351   n=FormatLocaleStringList(value,MaxTextExtent,format,operands);
 352   (void) n;
 353   va_end(operands);
 354   exception=AcquireExceptionInfo();
 355   status=SetImageProperty(image,property,value,exception);
 356   exception=DestroyExceptionInfo(exception);
 357   return(status);
 358 }
 359 \f
 360 /*
 361 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 362 %                                                                             %
 363 %                                                                             %
 364 %                                                                             %
 365 %   G e t I m a g e P r o p e r t y                                           %
 366 %                                                                             %
 367 %                                                                             %
 368 %                                                                             %
 369 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 370 %
 371 %  GetImageProperty() gets a value associated with an image property.
 372 %
 373 %  The returned string is a constant string in the tree and should NOT be
 374 %  freed by the caller.
 375 %
 376 %  The format of the GetImageProperty method is:
 377 %
 378 %      const char *GetImageProperty(const Image *image,const char *key,
 379 %        ExceptionInfo *exception)
 380 %
 381 %  A description of each parameter follows:
 382 %
 383 %    o image: the image.
 384 %
 385 %    o key: the key.
 386 %
 387 %    o exception: return any errors or warnings in this structure.
 388 %
 389 */
 390
 391 static char
 392   *TracePSClippath(const unsigned char *,size_t,const size_t,
 393     const size_t),
 394   *TraceSVGClippath(const unsigned char *,size_t,const size_t,
 395     const size_t);
 396
 397 static MagickBooleanType GetIPTCProperty(const Image *image,const char *key,
 398   ExceptionInfo *exception)
 399 {
 400   char
 401     *attribute,
 402     *message;
 403
 404   const StringInfo
 405     *profile;
 406
 407   long
 408     count,
 409     dataset,
 410     record;
 411
 412   register ssize_t
 413     i;
 414
 415   size_t
 416     length;
 417
 418   profile=GetImageProfile(image,"iptc");
 419   if (profile == (StringInfo *) NULL)
 420     profile=GetImageProfile(image,"8bim");
 421   if (profile == (StringInfo *) NULL)
 422     return(MagickFalse);
 423   count=sscanf(key,"IPTC:%ld:%ld",&dataset,&record);
 424   if (count != 2)
 425     return(MagickFalse);
 426   attribute=(char *) NULL;
 427   for (i=0; i < (ssize_t) GetStringInfoLength(profile); i+=(ssize_t) length)
 428   {
 429     length=1;
 430     if ((ssize_t) GetStringInfoDatum(profile)[i] != 0x1c)
 431       continue;
 432     length=(size_t) (GetStringInfoDatum(profile)[i+3] << 8);
 433     length|=GetStringInfoDatum(profile)[i+4];
 434     if (((long) GetStringInfoDatum(profile)[i+1] == dataset) &&
 435         ((long) GetStringInfoDatum(profile)[i+2] == record))
 436       {
 437         message=(char *) NULL;
 438         if (~length >= 1)
 439           message=(char *) AcquireQuantumMemory(length+1UL,sizeof(*message));
 440         if (message != (char *) NULL)
 441           {
 442             (void) CopyMagickString(message,(char *) GetStringInfoDatum(
 443               profile)+i+5,length+1);
 444             (void) ConcatenateString(&attribute,message);
 445             (void) ConcatenateString(&attribute,";");
 446             message=DestroyString(message);
 447           }
 448       }
 449     i+=5;
 450   }
 451   if ((attribute == (char *) NULL) || (*attribute == ';'))
 452     {
 453       if (attribute != (char *) NULL)
 454         attribute=DestroyString(attribute);
 455       return(MagickFalse);
 456     }
 457   attribute[strlen(attribute)-1]='\0';
 458   (void) SetImageProperty((Image *) image,key,(const char *) attribute,
 459     exception);
 460   attribute=DestroyString(attribute);
 461   return(MagickTrue);
 462 }
 463
 464 static inline ssize_t MagickMax(const ssize_t x,const ssize_t y)
 465 {
 466   if (x > y)
 467     return(x);
 468   return(y);
 469 }
 470
 471 static inline ssize_t MagickMin(const ssize_t x,const ssize_t y)
 472 {
 473   if (x < y)
 474     return(x);
 475   return(y);
 476 }
 477
 478 static inline int ReadPropertyByte(const unsigned char **p,size_t *length)
 479 {
 480   int
 481     c;
 482
 483   if (*length < 1)
 484     return(EOF);
 485   c=(int) (*(*p)++);
 486   (*length)--;
 487   return(c);
 488 }
 489
 490 static inline size_t ReadPropertyMSBLong(const unsigned char **p,
 491   size_t *length)
 492 {
 493   int
 494     c;
 495
 496   register ssize_t
 497     i;
 498
 499   unsigned char
 500     buffer[4];
 501
 502   size_t
 503     value;
 504
 505   if (*length < 4)
 506     return(~0UL);
 507   for (i=0; i < 4; i++)
 508   {
 509     c=(int) (*(*p)++);
 510     (*length)--;
 511     buffer[i]=(unsigned char) c;
 512   }
 513   value=(size_t) (buffer[0] << 24);
 514   value|=buffer[1] << 16;
 515   value|=buffer[2] << 8;
 516   value|=buffer[3];
 517   return(value & 0xffffffff);
 518 }
 519
 520 static inline unsigned short ReadPropertyMSBShort(const unsigned char **p,
 521   size_t *length)
 522 {
 523   int
 524     c;
 525
 526   register ssize_t
 527     i;
 528
 529   unsigned char
 530     buffer[2];
 531
 532   unsigned short
 533     value;
 534
 535   if (*length < 2)
 536     return((unsigned short) ~0U);
 537   for (i=0; i < 2; i++)
 538   {
 539     c=(int) (*(*p)++);
 540     (*length)--;
 541     buffer[i]=(unsigned char) c;
 542   }
 543   value=(unsigned short) (buffer[0] << 8);
 544   value|=buffer[1];
 545   return((unsigned short) (value & 0xffff));
 546 }
 547
 548 static MagickBooleanType Get8BIMProperty(const Image *image,const char *key,
 549   ExceptionInfo *exception)
 550 {
 551   char
 552     *attribute,
 553     format[MaxTextExtent],
 554     name[MaxTextExtent],
 555     *resource;
 556
 557   const StringInfo
 558     *profile;
 559
 560   const unsigned char
 561     *info;
 562
 563   long
 564     start,
 565     stop;
 566
 567   MagickBooleanType
 568     status;
 569
 570   register ssize_t
 571     i;
 572
 573   ssize_t
 574     count,
 575     id,
 576     sub_number;
 577
 578   size_t
 579     length;
 580
 581   /*
 582     There are no newlines in path names, so it's safe as terminator.
 583   */
 584   profile=GetImageProfile(image,"8bim");
 585   if (profile == (StringInfo *) NULL)
 586     return(MagickFalse);
 587   count=(ssize_t) sscanf(key,"8BIM:%ld,%ld:%[^\n]\n%[^\n]",&start,&stop,name,
 588     format);
 589   if ((count != 2) && (count != 3) && (count != 4))
 590     return(MagickFalse);
 591   if (count < 4)
 592     (void) CopyMagickString(format,"SVG",MaxTextExtent);
 593   if (count < 3)
 594     *name='\0';
 595   sub_number=1;
 596   if (*name == '#')
 597     sub_number=(ssize_t) StringToLong(&name[1]);
 598   sub_number=MagickMax(sub_number,1L);
 599   resource=(char *) NULL;
 600   status=MagickFalse;
 601   length=GetStringInfoLength(profile);
 602   info=GetStringInfoDatum(profile);
 603   while ((length > 0) && IfMagickFalse(status))
 604   {
 605     if (ReadPropertyByte(&info,&length) != (unsigned char) '8')
 606       continue;
 607     if (ReadPropertyByte(&info,&length) != (unsigned char) 'B')
 608       continue;
 609     if (ReadPropertyByte(&info,&length) != (unsigned char) 'I')
 610       continue;
 611     if (ReadPropertyByte(&info,&length) != (unsigned char) 'M')
 612       continue;
 613     id=(ssize_t) ((int) ReadPropertyMSBShort(&info,&length));
 614     if (id < (ssize_t) start)
 615       continue;
 616     if (id > (ssize_t) stop)
 617       continue;
 618     if (resource != (char *) NULL)
 619       resource=DestroyString(resource);
 620     count=(ssize_t) ReadPropertyByte(&info,&length);
 621     if ((count != 0) && ((size_t) count <= length))
 622       {
 623         resource=(char *) NULL;
 624         if (~((size_t) count) >= (MaxTextExtent-1))
 625           resource=(char *) AcquireQuantumMemory((size_t) count+MaxTextExtent,
 626             sizeof(*resource));
 627         if (resource != (char *) NULL)
 628           {
 629             for (i=0; i < (ssize_t) count; i++)
 630               resource[i]=(char) ReadPropertyByte(&info,&length);
 631             resource[count]='\0';
 632           }
 633       }
 634     if ((count & 0x01) == 0)
 635       (void) ReadPropertyByte(&info,&length);
 636     count=(ssize_t) ((int) ReadPropertyMSBLong(&info,&length));
 637     if ((*name != '\0') && (*name != '#'))
 638       if ((resource == (char *) NULL) || (LocaleCompare(name,resource) != 0))
 639         {
 640           /*
 641             No name match, scroll forward and try next.
 642           */
 643           info+=count;
 644           length-=MagickMin(count,(ssize_t) length);
 645           continue;
 646         }
 647     if ((*name == '#') && (sub_number != 1))
 648       {
 649         /*
 650           No numbered match, scroll forward and try next.
 651         */
 652         sub_number--;
 653         info+=count;
 654         length-=MagickMin(count,(ssize_t) length);
 655         continue;
 656       }
 657     /*
 658       We have the resource of interest.
 659     */
 660     attribute=(char *) NULL;
 661     if (~((size_t) count) >= (MaxTextExtent-1))
 662       attribute=(char *) AcquireQuantumMemory((size_t) count+MaxTextExtent,
 663         sizeof(*attribute));
 664     if (attribute != (char *) NULL)
 665       {
 666         (void) CopyMagickMemory(attribute,(char *) info,(size_t) count);
 667         attribute[count]='\0';
 668         info+=count;
 669         length-=MagickMin(count,(ssize_t) length);
 670         if ((id <= 1999) || (id >= 2999))
 671           (void) SetImageProperty((Image *) image,key,(const char *)
 672             attribute,exception);
 673         else
 674           {
 675             char
 676               *path;
 677
 678             if (LocaleCompare(format,"svg") == 0)
 679               path=TraceSVGClippath((unsigned char *) attribute,(size_t) count,
 680                 image->columns,image->rows);
 681             else
 682               path=TracePSClippath((unsigned char *) attribute,(size_t) count,
 683                 image->columns,image->rows);
 684             (void) SetImageProperty((Image *) image,key,(const char *) path,
 685               exception);
 686             path=DestroyString(path);
 687           }
 688         attribute=DestroyString(attribute);
 689         status=MagickTrue;
 690       }
 691   }
 692   if (resource != (char *) NULL)
 693     resource=DestroyString(resource);
 694   return(status);
 695 }
 696
 697 static inline unsigned short ReadPropertyShort(const EndianType endian,
 698   const unsigned char *buffer)
 699 {
 700   unsigned short
 701     value;
 702
 703   if (endian == MSBEndian)
 704     {
 705       value=(unsigned short) ((((unsigned char *) buffer)[0] << 8) |
 706         ((unsigned char *) buffer)[1]);
 707       return((unsigned short) (value & 0xffff));
 708     }
 709   value=(unsigned short) ((buffer[1] << 8) | buffer[0]);
 710   return((unsigned short) (value & 0xffff));
 711 }
 712
 713 static inline size_t ReadPropertyLong(const EndianType endian,
 714   const unsigned char *buffer)
 715 {
 716   size_t
 717     value;
 718
 719   if (endian == MSBEndian)
 720     {
 721       value=(size_t) ((buffer[0] << 24) | (buffer[1] << 16) |
 722         (buffer[2] << 8) | buffer[3]);
 723       return((size_t) (value & 0xffffffff));
 724     }
 725   value=(size_t) ((buffer[3] << 24) | (buffer[2] << 16) |
 726     (buffer[1] << 8 ) | (buffer[0]));
 727   return((size_t) (value & 0xffffffff));
 728 }
 729
 730 static MagickBooleanType GetEXIFProperty(const Image *image,
 731   const char *property,ExceptionInfo *exception)
 732 {
 733 #define MaxDirectoryStack  16
 734 #define EXIF_DELIMITER  "\n"
 735 #define EXIF_NUM_FORMATS  12
 736 #define EXIF_FMT_BYTE  1
 737 #define EXIF_FMT_STRING  2
 738 #define EXIF_FMT_USHORT  3
 739 #define EXIF_FMT_ULONG  4
 740 #define EXIF_FMT_URATIONAL  5
 741 #define EXIF_FMT_SBYTE  6
 742 #define EXIF_FMT_UNDEFINED  7
 743 #define EXIF_FMT_SSHORT  8
 744 #define EXIF_FMT_SLONG  9
 745 #define EXIF_FMT_SRATIONAL  10
 746 #define EXIF_FMT_SINGLE  11
 747 #define EXIF_FMT_DOUBLE  12
 748 #define TAG_EXIF_OFFSET  0x8769
 749 #define TAG_GPS_OFFSET  0x8825
 750 #define TAG_INTEROP_OFFSET  0xa005
 751
 752 #define EXIFMultipleValues(size,format,arg) \
 753 { \
 754    ssize_t \
 755      component; \
 756  \
 757    size_t \
 758      length; \
 759  \
 760    unsigned char \
 761      *p1; \
 762  \
 763    length=0; \
 764    p1=p; \
 765    for (component=0; component < components; component++) \
 766    { \
 767      length+=FormatLocaleString(buffer+length,MaxTextExtent-length, \
 768        format", ",arg); \
 769      if (length >= (MaxTextExtent-1)) \
 770        length=MaxTextExtent-1; \
 771      p1+=size; \
 772    } \
 773    if (length > 1) \
 774      buffer[length-2]='\0'; \
 775    value=AcquireString(buffer); \
 776 }
 777
 778 #define EXIFMultipleFractions(size,format,arg1,arg2) \
 779 { \
 780    ssize_t \
 781      component; \
 782  \
 783    size_t \
 784      length; \
 785  \
 786    unsigned char \
 787      *p1; \
 788  \
 789    length=0; \
 790    p1=p; \
 791    for (component=0; component < components; component++) \
 792    { \
 793      length+=FormatLocaleString(buffer+length,MaxTextExtent-length, \
 794        format", ",(arg1),(arg2)); \
 795      if (length >= (MaxTextExtent-1)) \
 796        length=MaxTextExtent-1; \
 797      p1+=size; \
 798    } \
 799    if (length > 1) \
 800      buffer[length-2]='\0'; \
 801    value=AcquireString(buffer); \
 802 }
 803
 804   typedef struct _DirectoryInfo
 805   {
 806     const unsigned char
 807       *directory;
 808
 809     size_t
 810       entry;
 811
 812     ssize_t
 813       offset;
 814   } DirectoryInfo;
 815
 816   typedef struct _TagInfo
 817   {
 818     size_t
 819       tag;
 820
 821     const char
 822       *description;
 823   } TagInfo;
 824
 825   static TagInfo
 826     EXIFTag[] =
 827     {
 828       {  0x001, "exif:InteroperabilityIndex" },
 829       {  0x002, "exif:InteroperabilityVersion" },
 830       {  0x100, "exif:ImageWidth" },
 831       {  0x101, "exif:ImageLength" },
 832       {  0x102, "exif:BitsPerSample" },
 833       {  0x103, "exif:Compression" },
 834       {  0x106, "exif:PhotometricInterpretation" },
 835       {  0x10a, "exif:FillOrder" },
 836       {  0x10d, "exif:DocumentName" },
 837       {  0x10e, "exif:ImageDescription" },
 838       {  0x10f, "exif:Make" },
 839       {  0x110, "exif:Model" },
 840       {  0x111, "exif:StripOffsets" },
 841       {  0x112, "exif:Orientation" },
 842       {  0x115, "exif:SamplesPerPixel" },
 843       {  0x116, "exif:RowsPerStrip" },
 844       {  0x117, "exif:StripByteCounts" },
 845       {  0x11a, "exif:XResolution" },
 846       {  0x11b, "exif:YResolution" },
 847       {  0x11c, "exif:PlanarConfiguration" },
 848       {  0x11d, "exif:PageName" },
 849       {  0x11e, "exif:XPosition" },
 850       {  0x11f, "exif:YPosition" },
 851       {  0x118, "exif:MinSampleValue" },
 852       {  0x119, "exif:MaxSampleValue" },
 853       {  0x120, "exif:FreeOffsets" },
 854       {  0x121, "exif:FreeByteCounts" },
 855       {  0x122, "exif:GrayResponseUnit" },
 856       {  0x123, "exif:GrayResponseCurve" },
 857       {  0x124, "exif:T4Options" },
 858       {  0x125, "exif:T6Options" },
 859       {  0x128, "exif:ResolutionUnit" },
 860       {  0x12d, "exif:TransferFunction" },
 861       {  0x131, "exif:Software" },
 862       {  0x132, "exif:DateTime" },
 863       {  0x13b, "exif:Artist" },
 864       {  0x13e, "exif:WhitePoint" },
 865       {  0x13f, "exif:PrimaryChromaticities" },
 866       {  0x140, "exif:ColorMap" },
 867       {  0x141, "exif:HalfToneHints" },
 868       {  0x142, "exif:TileWidth" },
 869       {  0x143, "exif:TileLength" },
 870       {  0x144, "exif:TileOffsets" },
 871       {  0x145, "exif:TileByteCounts" },
 872       {  0x14a, "exif:SubIFD" },
 873       {  0x14c, "exif:InkSet" },
 874       {  0x14d, "exif:InkNames" },
 875       {  0x14e, "exif:NumberOfInks" },
 876       {  0x150, "exif:DotRange" },
 877       {  0x151, "exif:TargetPrinter" },
 878       {  0x152, "exif:ExtraSample" },
 879       {  0x153, "exif:SampleFormat" },
 880       {  0x154, "exif:SMinSampleValue" },
 881       {  0x155, "exif:SMaxSampleValue" },
 882       {  0x156, "exif:TransferRange" },
 883       {  0x157, "exif:ClipPath" },
 884       {  0x158, "exif:XClipPathUnits" },
 885       {  0x159, "exif:YClipPathUnits" },
 886       {  0x15a, "exif:Indexed" },
 887       {  0x15b, "exif:JPEGTables" },
 888       {  0x15f, "exif:OPIProxy" },
 889       {  0x200, "exif:JPEGProc" },
 890       {  0x201, "exif:JPEGInterchangeFormat" },
 891       {  0x202, "exif:JPEGInterchangeFormatLength" },
 892       {  0x203, "exif:JPEGRestartInterval" },
 893       {  0x205, "exif:JPEGLosslessPredictors" },
 894       {  0x206, "exif:JPEGPointTransforms" },
 895       {  0x207, "exif:JPEGQTables" },
 896       {  0x208, "exif:JPEGDCTables" },
 897       {  0x209, "exif:JPEGACTables" },
 898       {  0x211, "exif:YCbCrCoefficients" },
 899       {  0x212, "exif:YCbCrSubSampling" },
 900       {  0x213, "exif:YCbCrPositioning" },
 901       {  0x214, "exif:ReferenceBlackWhite" },
 902       {  0x2bc, "exif:ExtensibleMetadataPlatform" },
 903       {  0x301, "exif:Gamma" },
 904       {  0x302, "exif:ICCProfileDescriptor" },
 905       {  0x303, "exif:SRGBRenderingIntent" },
 906       {  0x320, "exif:ImageTitle" },
 907       {  0x5001, "exif:ResolutionXUnit" },
 908       {  0x5002, "exif:ResolutionYUnit" },
 909       {  0x5003, "exif:ResolutionXLengthUnit" },
 910       {  0x5004, "exif:ResolutionYLengthUnit" },
 911       {  0x5005, "exif:PrintFlags" },
 912       {  0x5006, "exif:PrintFlagsVersion" },
 913       {  0x5007, "exif:PrintFlagsCrop" },
 914       {  0x5008, "exif:PrintFlagsBleedWidth" },
 915       {  0x5009, "exif:PrintFlagsBleedWidthScale" },
 916       {  0x500A, "exif:HalftoneLPI" },
 917       {  0x500B, "exif:HalftoneLPIUnit" },
 918       {  0x500C, "exif:HalftoneDegree" },
 919       {  0x500D, "exif:HalftoneShape" },
 920       {  0x500E, "exif:HalftoneMisc" },
 921       {  0x500F, "exif:HalftoneScreen" },
 922       {  0x5010, "exif:JPEGQuality" },
 923       {  0x5011, "exif:GridSize" },
 924       {  0x5012, "exif:ThumbnailFormat" },
 925       {  0x5013, "exif:ThumbnailWidth" },
 926       {  0x5014, "exif:ThumbnailHeight" },
 927       {  0x5015, "exif:ThumbnailColorDepth" },
 928       {  0x5016, "exif:ThumbnailPlanes" },
 929       {  0x5017, "exif:ThumbnailRawBytes" },
 930       {  0x5018, "exif:ThumbnailSize" },
 931       {  0x5019, "exif:ThumbnailCompressedSize" },
 932       {  0x501a, "exif:ColorTransferFunction" },
 933       {  0x501b, "exif:ThumbnailData" },
 934       {  0x5020, "exif:ThumbnailImageWidth" },
 935       {  0x5021, "exif:ThumbnailImageHeight" },
 936       {  0x5022, "exif:ThumbnailBitsPerSample" },
 937       {  0x5023, "exif:ThumbnailCompression" },
 938       {  0x5024, "exif:ThumbnailPhotometricInterp" },
 939       {  0x5025, "exif:ThumbnailImageDescription" },
 940       {  0x5026, "exif:ThumbnailEquipMake" },
 941       {  0x5027, "exif:ThumbnailEquipModel" },
 942       {  0x5028, "exif:ThumbnailStripOffsets" },
 943       {  0x5029, "exif:ThumbnailOrientation" },
 944       {  0x502a, "exif:ThumbnailSamplesPerPixel" },
 945       {  0x502b, "exif:ThumbnailRowsPerStrip" },
 946       {  0x502c, "exif:ThumbnailStripBytesCount" },
 947       {  0x502d, "exif:ThumbnailResolutionX" },
 948       {  0x502e, "exif:ThumbnailResolutionY" },
 949       {  0x502f, "exif:ThumbnailPlanarConfig" },
 950       {  0x5030, "exif:ThumbnailResolutionUnit" },
 951       {  0x5031, "exif:ThumbnailTransferFunction" },
 952       {  0x5032, "exif:ThumbnailSoftwareUsed" },
 953       {  0x5033, "exif:ThumbnailDateTime" },
 954       {  0x5034, "exif:ThumbnailArtist" },
 955       {  0x5035, "exif:ThumbnailWhitePoint" },
 956       {  0x5036, "exif:ThumbnailPrimaryChromaticities" },
 957       {  0x5037, "exif:ThumbnailYCbCrCoefficients" },
 958       {  0x5038, "exif:ThumbnailYCbCrSubsampling" },
 959       {  0x5039, "exif:ThumbnailYCbCrPositioning" },
 960       {  0x503A, "exif:ThumbnailRefBlackWhite" },
 961       {  0x503B, "exif:ThumbnailCopyRight" },
 962       {  0x5090, "exif:LuminanceTable" },
 963       {  0x5091, "exif:ChrominanceTable" },
 964       {  0x5100, "exif:FrameDelay" },
 965       {  0x5101, "exif:LoopCount" },
 966       {  0x5110, "exif:PixelUnit" },
 967       {  0x5111, "exif:PixelPerUnitX" },
 968       {  0x5112, "exif:PixelPerUnitY" },
 969       {  0x5113, "exif:PaletteHistogram" },
 970       {  0x1000, "exif:RelatedImageFileFormat" },
 971       {  0x1001, "exif:RelatedImageLength" },
 972       {  0x1002, "exif:RelatedImageWidth" },
 973       {  0x800d, "exif:ImageID" },
 974       {  0x80e3, "exif:Matteing" },
 975       {  0x80e4, "exif:DataType" },
 976       {  0x80e5, "exif:ImageDepth" },
 977       {  0x80e6, "exif:TileDepth" },
 978       {  0x828d, "exif:CFARepeatPatternDim" },
 979       {  0x828e, "exif:CFAPattern2" },
 980       {  0x828f, "exif:BatteryLevel" },
 981       {  0x8298, "exif:Copyright" },
 982       {  0x829a, "exif:ExposureTime" },
 983       {  0x829d, "exif:FNumber" },
 984       {  0x83bb, "exif:IPTC/NAA" },
 985       {  0x84e3, "exif:IT8RasterPadding" },
 986       {  0x84e5, "exif:IT8ColorTable" },
 987       {  0x8649, "exif:ImageResourceInformation" },
 988       {  0x8769, "exif:ExifOffset" },
 989       {  0x8773, "exif:InterColorProfile" },
 990       {  0x8822, "exif:ExposureProgram" },
 991       {  0x8824, "exif:SpectralSensitivity" },
 992       {  0x8825, "exif:GPSInfo" },
 993       {  0x8827, "exif:ISOSpeedRatings" },
 994       {  0x8828, "exif:OECF" },
 995       {  0x8829, "exif:Interlace" },
 996       {  0x882a, "exif:TimeZoneOffset" },
 997       {  0x882b, "exif:SelfTimerMode" },
 998       {  0x9000, "exif:ExifVersion" },
 999       {  0x9003, "exif:DateTimeOriginal" },
1000       {  0x9004, "exif:DateTimeDigitized" },
1001       {  0x9101, "exif:ComponentsConfiguration" },
1002       {  0x9102, "exif:CompressedBitsPerPixel" },
1003       {  0x9201, "exif:ShutterSpeedValue" },
1004       {  0x9202, "exif:ApertureValue" },
1005       {  0x9203, "exif:BrightnessValue" },
1006       {  0x9204, "exif:ExposureBiasValue" },
1007       {  0x9205, "exif:MaxApertureValue" },
1008       {  0x9206, "exif:SubjectDistance" },
1009       {  0x9207, "exif:MeteringMode" },
1010       {  0x9208, "exif:LightSource" },
1011       {  0x9209, "exif:Flash" },
1012       {  0x920a, "exif:FocalLength" },
1013       {  0x920b, "exif:FlashEnergy" },
1014       {  0x920c, "exif:SpatialFrequencyResponse" },
1015       {  0x920d, "exif:Noise" },
1016       {  0x9211, "exif:ImageNumber" },
1017       {  0x9212, "exif:SecurityClassification" },
1018       {  0x9213, "exif:ImageHistory" },
1019       {  0x9214, "exif:SubjectArea" },
1020       {  0x9215, "exif:ExposureIndex" },
1021       {  0x9216, "exif:TIFF-EPStandardID" },
1022       {  0x927c, "exif:MakerNote" },
1023       {  0x9C9b, "exif:WinXP-Title" },
1024       {  0x9C9c, "exif:WinXP-Comments" },
1025       {  0x9C9d, "exif:WinXP-Author" },
1026       {  0x9C9e, "exif:WinXP-Keywords" },
1027       {  0x9C9f, "exif:WinXP-Subject" },
1028       {  0x9286, "exif:UserComment" },
1029       {  0x9290, "exif:SubSecTime" },
1030       {  0x9291, "exif:SubSecTimeOriginal" },
1031       {  0x9292, "exif:SubSecTimeDigitized" },
1032       {  0xa000, "exif:FlashPixVersion" },
1033       {  0xa001, "exif:ColorSpace" },
1034       {  0xa002, "exif:ExifImageWidth" },
1035       {  0xa003, "exif:ExifImageLength" },
1036       {  0xa004, "exif:RelatedSoundFile" },
1037       {  0xa005, "exif:InteroperabilityOffset" },
1038       {  0xa20b, "exif:FlashEnergy" },
1039       {  0xa20c, "exif:SpatialFrequencyResponse" },
1040       {  0xa20d, "exif:Noise" },
1041       {  0xa20e, "exif:FocalPlaneXResolution" },
1042       {  0xa20f, "exif:FocalPlaneYResolution" },
1043       {  0xa210, "exif:FocalPlaneResolutionUnit" },
1044       {  0xa214, "exif:SubjectLocation" },
1045       {  0xa215, "exif:ExposureIndex" },
1046       {  0xa216, "exif:TIFF/EPStandardID" },
1047       {  0xa217, "exif:SensingMethod" },
1048       {  0xa300, "exif:FileSource" },
1049       {  0xa301, "exif:SceneType" },
1050       {  0xa302, "exif:CFAPattern" },
1051       {  0xa401, "exif:CustomRendered" },
1052       {  0xa402, "exif:ExposureMode" },
1053       {  0xa403, "exif:WhiteBalance" },
1054       {  0xa404, "exif:DigitalZoomRatio" },
1055       {  0xa405, "exif:FocalLengthIn35mmFilm" },
1056       {  0xa406, "exif:SceneCaptureType" },
1057       {  0xa407, "exif:GainControl" },
1058       {  0xa408, "exif:Contrast" },
1059       {  0xa409, "exif:Saturation" },
1060       {  0xa40a, "exif:Sharpness" },
1061       {  0xa40b, "exif:DeviceSettingDescription" },
1062       {  0xa40c, "exif:SubjectDistanceRange" },
1063       {  0xa420, "exif:ImageUniqueID" },
1064       {  0xc4a5, "exif:PrintImageMatching" },
1065       {  0xa500, "exif:Gamma" },
1066       {  0xc640, "exif:CR2Slice" },
1067       { 0x10000, "exif:GPSVersionID" },
1068       { 0x10001, "exif:GPSLatitudeRef" },
1069       { 0x10002, "exif:GPSLatitude" },
1070       { 0x10003, "exif:GPSLongitudeRef" },
1071       { 0x10004, "exif:GPSLongitude" },
1072       { 0x10005, "exif:GPSAltitudeRef" },
1073       { 0x10006, "exif:GPSAltitude" },
1074       { 0x10007, "exif:GPSTimeStamp" },
1075       { 0x10008, "exif:GPSSatellites" },
1076       { 0x10009, "exif:GPSStatus" },
1077       { 0x1000a, "exif:GPSMeasureMode" },
1078       { 0x1000b, "exif:GPSDop" },
1079       { 0x1000c, "exif:GPSSpeedRef" },
1080       { 0x1000d, "exif:GPSSpeed" },
1081       { 0x1000e, "exif:GPSTrackRef" },
1082       { 0x1000f, "exif:GPSTrack" },
1083       { 0x10010, "exif:GPSImgDirectionRef" },
1084       { 0x10011, "exif:GPSImgDirection" },
1085       { 0x10012, "exif:GPSMapDatum" },
1086       { 0x10013, "exif:GPSDestLatitudeRef" },
1087       { 0x10014, "exif:GPSDestLatitude" },
1088       { 0x10015, "exif:GPSDestLongitudeRef" },
1089       { 0x10016, "exif:GPSDestLongitude" },
1090       { 0x10017, "exif:GPSDestBearingRef" },
1091       { 0x10018, "exif:GPSDestBearing" },
1092       { 0x10019, "exif:GPSDestDistanceRef" },
1093       { 0x1001a, "exif:GPSDestDistance" },
1094       { 0x1001b, "exif:GPSProcessingMethod" },
1095       { 0x1001c, "exif:GPSAreaInformation" },
1096       { 0x1001d, "exif:GPSDateStamp" },
1097       { 0x1001e, "exif:GPSDifferential" },
1098       {  0x0000, NULL}
1099     };
1100
1101   const StringInfo
1102     *profile;
1103
1104   const unsigned char
1105     *directory,
1106     *exif;
1107
1108   DirectoryInfo
1109     directory_stack[MaxDirectoryStack];
1110
1111   EndianType
1112     endian;
1113
1114   MagickBooleanType
1115     status;
1116
1117   register ssize_t
1118     i;
1119
1120   size_t
1121     entry,
1122     length,
1123     number_entries,
1124     tag;
1125
1126   SplayTreeInfo
1127     *exif_resources;
1128
1129   ssize_t
1130     all,
1131     id,
1132     level,
1133     offset,
1134     tag_offset,
1135     tag_value;
1136
1137   static int
1138     tag_bytes[] = {0, 1, 1, 2, 4, 8, 1, 1, 2, 4, 8, 4, 8};
1139
1140   /*
1141     If EXIF data exists, then try to parse the request for a tag.
1142   */
1143   profile=GetImageProfile(image,"exif");
1144   if (profile == (StringInfo *) NULL)
1145     return(MagickFalse);
1146   if ((property == (const char *) NULL) || (*property == '\0'))
1147     return(MagickFalse);
1148   while (isspace((int) ((unsigned char) *property)) != 0)
1149     property++;
1150   all=0;
1151   tag=(~0UL);
1152   switch (*(property+5))
1153   {
1154     case '*':
1155     {
1156       /*
1157         Caller has asked for all the tags in the EXIF data.
1158       */
1159       tag=0;
1160       all=1; /* return the data in description=value format */
1161       break;
1162     }
1163     case '!':
1164     {
1165       tag=0;
1166       all=2; /* return the data in tagid=value format */
1167       break;
1168     }
1169     case '#':
1170     case '@':
1171     {
1172       int
1173         c;
1174
1175       size_t
1176         n;
1177
1178       /*
1179         Check for a hex based tag specification first.
1180       */
1181       tag=(*(property+5) == '@') ? 1UL : 0UL;
1182       property+=6;
1183       n=strlen(property);
1184       if (n != 4)
1185         return(MagickFalse);
1186       /*
1187         Parse tag specification as a hex number.
1188       */
1189       n/=4;
1190       do
1191       {
1192         for (i=(ssize_t) n-1L; i >= 0; i--)
1193         {
1194           c=(*property++);
1195           tag<<=4;
1196           if ((c >= '0') && (c <= '9'))
1197             tag|=(c-'0');
1198           else
1199             if ((c >= 'A') && (c <= 'F'))
1200               tag|=(c-('A'-10));
1201             else
1202               if ((c >= 'a') && (c <= 'f'))
1203                 tag|=(c-('a'-10));
1204               else
1205                 return(MagickFalse);
1206         }
1207       } while (*property != '\0');
1208       break;
1209     }
1210     default:
1211     {
1212       /*
1213         Try to match the text with a tag name instead.
1214       */
1215       for (i=0; ; i++)
1216       {
1217         if (EXIFTag[i].tag == 0)
1218           break;
1219         if (LocaleCompare(EXIFTag[i].description,property) == 0)
1220           {
1221             tag=(size_t) EXIFTag[i].tag;
1222             break;
1223           }
1224       }
1225       break;
1226     }
1227   }
1228   if (tag == (~0UL))
1229     return(MagickFalse);
1230   length=GetStringInfoLength(profile);
1231   exif=GetStringInfoDatum(profile);
1232   while (length != 0)
1233   {
1234     if (ReadPropertyByte(&exif,&length) != 0x45)
1235       continue;
1236     if (ReadPropertyByte(&exif,&length) != 0x78)
1237       continue;
1238     if (ReadPropertyByte(&exif,&length) != 0x69)
1239       continue;
1240     if (ReadPropertyByte(&exif,&length) != 0x66)
1241       continue;
1242     if (ReadPropertyByte(&exif,&length) != 0x00)
1243       continue;
1244     if (ReadPropertyByte(&exif,&length) != 0x00)
1245       continue;
1246     break;
1247   }
1248   if (length < 16)
1249     return(MagickFalse);
1250   id=(ssize_t) ((int) ReadPropertyShort(LSBEndian,exif));
1251   endian=LSBEndian;
1252   if (id == 0x4949)
1253     endian=LSBEndian;
1254   else
1255     if (id == 0x4D4D)
1256       endian=MSBEndian;
1257     else
1258       return(MagickFalse);
1259   if (ReadPropertyShort(endian,exif+2) != 0x002a)
1260     return(MagickFalse);
1261   /*
1262     This the offset to the first IFD.
1263   */
1264   offset=(ssize_t) ((int) ReadPropertyLong(endian,exif+4));
1265   if ((offset < 0) || (size_t) offset >= length)
1266     return(MagickFalse);
1267   /*
1268     Set the pointer to the first IFD and follow it were it leads.
1269   */
1270   status=MagickFalse;
1271   directory=exif+offset;
1272   level=0;
1273   entry=0;
1274   tag_offset=0;
1275   exif_resources=NewSplayTree((int (*)(const void *,const void *)) NULL,
1276     (void *(*)(void *)) NULL,(void *(*)(void *)) NULL);
1277   do
1278   {
1279     /*
1280       If there is anything on the stack then pop it off.
1281     */
1282     if (level > 0)
1283       {
1284         level--;
1285         directory=directory_stack[level].directory;
1286         entry=directory_stack[level].entry;
1287         tag_offset=directory_stack[level].offset;
1288       }
1289     /*
1290       Determine how many entries there are in the current IFD.
1291     */
1292     number_entries=(size_t) ((int) ReadPropertyShort(endian,directory));
1293     for ( ; entry < number_entries; entry++)
1294     {
1295       register unsigned char
1296         *p,
1297         *q;
1298
1299       size_t
1300         format;
1301
1302       ssize_t
1303         number_bytes,
1304         components;
1305
1306       q=(unsigned char *) (directory+(12*entry)+2);
1307       if (GetValueFromSplayTree(exif_resources,q) == q)
1308         break;
1309       (void) AddValueToSplayTree(exif_resources,q,q);
1310       tag_value=(ssize_t) ((int) ReadPropertyShort(endian,q)+tag_offset);
1311       format=(size_t) ((int) ReadPropertyShort(endian,q+2));
1312       if (format >= (sizeof(tag_bytes)/sizeof(*tag_bytes)))
1313         break;
1314       components=(ssize_t) ((int) ReadPropertyLong(endian,q+4));
1315       number_bytes=(size_t) components*tag_bytes[format];
1316       if (number_bytes < components)
1317         break;  /* prevent overflow */
1318       if (number_bytes <= 4)
1319         p=q+8;
1320       else
1321         {
1322           ssize_t
1323             offset;
1324
1325           /*
1326             The directory entry contains an offset.
1327           */
1328           offset=(ssize_t) ((int) ReadPropertyLong(endian,q+8));
1329           if ((ssize_t) (offset+number_bytes) < offset)
1330             continue;  /* prevent overflow */
1331           if ((size_t) (offset+number_bytes) > length)
1332             continue;
1333           p=(unsigned char *) (exif+offset);
1334         }
1335       if ((all != 0) || (tag == (size_t) tag_value))
1336         {
1337           char
1338             buffer[MaxTextExtent],
1339             *value;
1340
1341           value=(char *) NULL;
1342           *buffer='\0';
1343           switch (format)
1344           {
1345             case EXIF_FMT_BYTE:
1346             case EXIF_FMT_UNDEFINED:
1347             {
1348               EXIFMultipleValues(1,"%.20g",(double) (*(unsigned char *) p1));
1349               break;
1350             }
1351             case EXIF_FMT_SBYTE:
1352             {
1353               EXIFMultipleValues(1,"%.20g",(double) (*(signed char *) p1));
1354               break;
1355             }
1356             case EXIF_FMT_SSHORT:
1357             {
1358               EXIFMultipleValues(2,"%hd",ReadPropertyShort(endian,p1));
1359               break;
1360             }
1361             case EXIF_FMT_USHORT:
1362             {
1363               EXIFMultipleValues(2,"%hu",ReadPropertyShort(endian,p1));
1364               break;
1365             }
1366             case EXIF_FMT_ULONG:
1367             {
1368               EXIFMultipleValues(4,"%.20g",(double)
1369                 ((int) ReadPropertyLong(endian,p1)));
1370               break;
1371             }
1372             case EXIF_FMT_SLONG:
1373             {
1374               EXIFMultipleValues(4,"%.20g",(double)
1375                 ((int) ReadPropertyLong(endian,p1)));
1376               break;
1377             }
1378             case EXIF_FMT_URATIONAL:
1379             {
1380               EXIFMultipleFractions(8,"%.20g/%.20g",(double)
1381                 ((int) ReadPropertyLong(endian,p1)),(double)
1382                 ((int) ReadPropertyLong(endian,p1+4)));
1383               break;
1384             }
1385             case EXIF_FMT_SRATIONAL:
1386             {
1387               EXIFMultipleFractions(8,"%.20g/%.20g",(double)
1388                 ((int) ReadPropertyLong(endian,p1)),(double)
1389                 ((int) ReadPropertyLong(endian,p1+4)));
1390               break;
1391             }
1392             case EXIF_FMT_SINGLE:
1393             {
1394               EXIFMultipleValues(4,"%f",(double) *(float *) p1);
1395               break;
1396             }
1397             case EXIF_FMT_DOUBLE:
1398             {
1399               EXIFMultipleValues(8,"%f",*(double *) p1);
1400               break;
1401             }
1402             default:
1403             case EXIF_FMT_STRING:
1404             {
1405               value=(char *) NULL;
1406               if (~((size_t) number_bytes) >= 1)
1407                 value=(char *) AcquireQuantumMemory((size_t) number_bytes+1UL,
1408                   sizeof(*value));
1409               if (value != (char *) NULL)
1410                 {
1411                   register ssize_t
1412                     i;
1413
1414                   for (i=0; i < (ssize_t) number_bytes; i++)
1415                   {
1416                     value[i]='.';
1417                     if ((isprint((int) p[i]) != 0) || (p[i] == '\0'))
1418                       value[i]=(char) p[i];
1419                   }
1420                   value[i]='\0';
1421                 }
1422               break;
1423             }
1424           }
1425           if (value != (char *) NULL)
1426             {
1427               char
1428                 key[MaxTextExtent];
1429
1430               register const char
1431                 *p;
1432
1433               (void) CopyMagickString(key,property,MaxTextExtent);
1434               switch (all)
1435               {
1436                 case 1:
1437                 {
1438                   const char
1439                     *description;
1440
1441                   register ssize_t
1442                     i;
1443
1444                   description="unknown";
1445                   for (i=0; ; i++)
1446                   {
1447                     if (EXIFTag[i].tag == 0)
1448                       break;
1449                     if ((ssize_t) EXIFTag[i].tag == tag_value)
1450                       {
1451                         description=EXIFTag[i].description;
1452                         break;
1453                       }
1454                   }
1455                   (void) FormatLocaleString(key,MaxTextExtent,"%s",description);
1456                   break;
1457                 }
1458                 case 2:
1459                 {
1460                   if (tag_value < 0x10000)
1461                     (void) FormatLocaleString(key,MaxTextExtent,"#%04lx",
1462                       (unsigned long) tag_value);
1463                   else
1464                     if (tag_value < 0x20000)
1465                       (void) FormatLocaleString(key,MaxTextExtent,"@%04lx",
1466                         (unsigned long) (tag_value & 0xffff));
1467                     else
1468                       (void) FormatLocaleString(key,MaxTextExtent,"unknown");
1469                   break;
1470                 }
1471               }
1472               p=(const char *) NULL;
1473               if (image->properties != (void *) NULL)
1474                 p=(const char *) GetValueFromSplayTree((SplayTreeInfo *)
1475                   image->properties,key);
1476               if (p == (const char *) NULL)
1477                 (void) SetImageProperty((Image *) image,key,value,exception);
1478               value=DestroyString(value);
1479               status=MagickTrue;
1480             }
1481         }
1482         if ((tag_value == TAG_EXIF_OFFSET) ||
1483             (tag_value == TAG_INTEROP_OFFSET) || (tag_value == TAG_GPS_OFFSET))
1484           {
1485             ssize_t
1486               offset;
1487
1488             offset=(ssize_t) ((int) ReadPropertyLong(endian,p));
1489             if (((size_t) offset < length) && (level < (MaxDirectoryStack-2)))
1490               {
1491                 ssize_t
1492                   tag_offset1;
1493
1494                 tag_offset1=(ssize_t) ((tag_value == TAG_GPS_OFFSET) ? 0x10000 :
1495                   0);
1496                 directory_stack[level].directory=directory;
1497                 entry++;
1498                 directory_stack[level].entry=entry;
1499                 directory_stack[level].offset=tag_offset;
1500                 level++;
1501                 directory_stack[level].directory=exif+offset;
1502                 directory_stack[level].offset=tag_offset1;
1503                 directory_stack[level].entry=0;
1504                 level++;
1505                 if ((directory+2+(12*number_entries)) > (exif+length))
1506                   break;
1507                 offset=(ssize_t) ((int) ReadPropertyLong(endian,directory+2+(12*
1508                   number_entries)));
1509                 if ((offset != 0) && ((size_t) offset < length) &&
1510                     (level < (MaxDirectoryStack-2)))
1511                   {
1512                     directory_stack[level].directory=exif+offset;
1513                     directory_stack[level].entry=0;
1514                     directory_stack[level].offset=tag_offset1;
1515                     level++;
1516                   }
1517               }
1518             break;
1519           }
1520     }
1521   } while (level > 0);
1522   exif_resources=DestroySplayTree(exif_resources);
1523   return(status);
1524 }
1525
1526 static MagickBooleanType GetXMPProperty(const Image *image,const char *property)
1527 {
1528   char
1529     *xmp_profile;
1530
1531   const StringInfo
1532     *profile;
1533
1534   ExceptionInfo
1535     *exception;
1536
1537   MagickBooleanType
1538     status;
1539
1540   register const char
1541     *p;
1542
1543   XMLTreeInfo
1544     *child,
1545     *description,
1546     *node,
1547     *rdf,
1548     *xmp;
1549
1550   profile=GetImageProfile(image,"xmp");
1551   if (profile == (StringInfo *) NULL)
1552     return(MagickFalse);
1553   if ((property == (const char *) NULL) || (*property == '\0'))
1554     return(MagickFalse);
1555   xmp_profile=StringInfoToString(profile);
1556   if (xmp_profile == (char *) NULL)
1557     return(MagickFalse);
1558   for (p=xmp_profile; *p != '\0'; p++)
1559     if ((*p == '<') && (*(p+1) == 'x'))
1560       break;
1561   exception=AcquireExceptionInfo();
1562   xmp=NewXMLTree((char *) p,exception);
1563   xmp_profile=DestroyString(xmp_profile);
1564   exception=DestroyExceptionInfo(exception);
1565   if (xmp == (XMLTreeInfo *) NULL)
1566     return(MagickFalse);
1567   status=MagickFalse;
1568   rdf=GetXMLTreeChild(xmp,"rdf:RDF");
1569   if (rdf != (XMLTreeInfo *) NULL)
1570     {
1571       if (image->properties == (void *) NULL)
1572         ((Image *) image)->properties=NewSplayTree(CompareSplayTreeString,
1573           RelinquishMagickMemory,RelinquishMagickMemory);
1574       description=GetXMLTreeChild(rdf,"rdf:Description");
1575       while (description != (XMLTreeInfo *) NULL)
1576       {
1577         node=GetXMLTreeChild(description,(const char *) NULL);
1578         while (node != (XMLTreeInfo *) NULL)
1579         {
1580           child=GetXMLTreeChild(node,(const char *) NULL);
1581           if (child == (XMLTreeInfo *) NULL)
1582             (void) AddValueToSplayTree((SplayTreeInfo *) image->properties,
1583               ConstantString(GetXMLTreeTag(node)),
1584               ConstantString(GetXMLTreeContent(node)));
1585           while (child != (XMLTreeInfo *) NULL)
1586           {
1587             if (LocaleCompare(GetXMLTreeTag(child),"rdf:Seq") != 0)
1588               (void) AddValueToSplayTree((SplayTreeInfo *) image->properties,
1589                 ConstantString(GetXMLTreeTag(child)),
1590                 ConstantString(GetXMLTreeContent(child)));
1591             child=GetXMLTreeSibling(child);
1592           }
1593           node=GetXMLTreeSibling(node);
1594         }
1595         description=GetNextXMLTreeTag(description);
1596       }
1597     }
1598   xmp=DestroyXMLTree(xmp);
1599   return(status);
1600 }
1601
1602 static char *TracePSClippath(const unsigned char *blob,size_t length,
1603   const size_t magick_unused(columns),const size_t magick_unused(rows))
1604 {
1605   char
1606     *path,
1607     *message;
1608
1609   MagickBooleanType
1610     in_subpath;
1611
1612   PointInfo
1613     first[3],
1614     last[3],
1615     point[3];
1616
1617   register ssize_t
1618     i,
1619     x;
1620
1621   ssize_t
1622     knot_count,
1623     selector,
1624     y;
1625
1626   path=AcquireString((char *) NULL);
1627   if (path == (char *) NULL)
1628     return((char *) NULL);
1629   message=AcquireString((char *) NULL);
1630   (void) FormatLocaleString(message,MaxTextExtent,"/ClipImage\n");
1631   (void) ConcatenateString(&path,message);
1632   (void) FormatLocaleString(message,MaxTextExtent,"{\n");
1633   (void) ConcatenateString(&path,message);
1634   (void) FormatLocaleString(message,MaxTextExtent,"  /c {curveto} bind def\n");
1635   (void) ConcatenateString(&path,message);
1636   (void) FormatLocaleString(message,MaxTextExtent,"  /l {lineto} bind def\n");
1637   (void) ConcatenateString(&path,message);
1638   (void) FormatLocaleString(message,MaxTextExtent,"  /m {moveto} bind def\n");
1639   (void) ConcatenateString(&path,message);
1640   (void) FormatLocaleString(message,MaxTextExtent,
1641     "  /v {currentpoint 6 2 roll curveto} bind def\n");
1642   (void) ConcatenateString(&path,message);
1643   (void) FormatLocaleString(message,MaxTextExtent,
1644     "  /y {2 copy curveto} bind def\n");
1645   (void) ConcatenateString(&path,message);
1646   (void) FormatLocaleString(message,MaxTextExtent,
1647     "  /z {closepath} bind def\n");
1648   (void) ConcatenateString(&path,message);
1649   (void) FormatLocaleString(message,MaxTextExtent,"  newpath\n");
1650   (void) ConcatenateString(&path,message);
1651   /*
1652     The clipping path format is defined in "Adobe Photoshop File
1653     Formats Specification" version 6.0 downloadable from adobe.com.
1654   */
1655   (void) ResetMagickMemory(point,0,sizeof(point));
1656   (void) ResetMagickMemory(first,0,sizeof(first));
1657   (void) ResetMagickMemory(last,0,sizeof(last));
1658   knot_count=0;
1659   in_subpath=MagickFalse;
1660   while (length > 0)
1661   {
1662     selector=(ssize_t) ((int) ReadPropertyMSBShort(&blob,&length));
1663     switch (selector)
1664     {
1665       case 0:
1666       case 3:
1667       {
1668         if (knot_count != 0)
1669           {
1670             blob+=24;
1671             length-=MagickMin(24,(ssize_t) length);
1672             break;
1673           }
1674         /*
1675           Expected subpath length record.
1676         */
1677         knot_count=(ssize_t) ((int) ReadPropertyMSBShort(&blob,&length));
1678         blob+=22;
1679         length-=MagickMin(22,(ssize_t) length);
1680         break;
1681       }
1682       case 1:
1683       case 2:
1684       case 4:
1685       case 5:
1686       {
1687         if (knot_count == 0)
1688           {
1689             /*
1690               Unexpected subpath knot
1691             */
1692             blob+=24;
1693             length-=MagickMin(24,(ssize_t) length);
1694             break;
1695           }
1696         /*
1697           Add sub-path knot
1698         */
1699         for (i=0; i < 3; i++)
1700         {
1701           size_t
1702             xx,
1703             yy;
1704
1705           yy=(size_t) ((int) ReadPropertyMSBLong(&blob,&length));
1706           xx=(size_t) ((int) ReadPropertyMSBLong(&blob,&length));
1707           x=(ssize_t) xx;
1708           if (xx > 2147483647)
1709             x=(ssize_t) xx-4294967295U-1;
1710           y=(ssize_t) yy;
1711           if (yy > 2147483647)
1712             y=(ssize_t) yy-4294967295U-1;
1713           point[i].x=(double) x/4096/4096;
1714           point[i].y=1.0-(double) y/4096/4096;
1715         }
1716         if( IfMagickFalse(in_subpath) )
1717           {
1718             (void) FormatLocaleString(message,MaxTextExtent,"  %g %g m\n",
1719               point[1].x,point[1].y);
1720             for (i=0; i < 3; i++)
1721             {
1722               first[i]=point[i];
1723               last[i]=point[i];
1724             }
1725           }
1726         else
1727           {
1728             /*
1729               Handle special cases when Bezier curves are used to describe
1730               corners and straight lines.
1731             */
1732             if ((last[1].x == last[2].x) && (last[1].y == last[2].y) &&
1733                 (point[0].x == point[1].x) && (point[0].y == point[1].y))
1734               (void) FormatLocaleString(message,MaxTextExtent,
1735                 "  %g %g l\n",point[1].x,point[1].y);
1736             else
1737               if ((last[1].x == last[2].x) && (last[1].y == last[2].y))
1738                 (void) FormatLocaleString(message,MaxTextExtent,
1739                   "  %g %g %g %g v\n",point[0].x,point[0].y,
1740                   point[1].x,point[1].y);
1741               else
1742                 if ((point[0].x == point[1].x) && (point[0].y == point[1].y))
1743                   (void) FormatLocaleString(message,MaxTextExtent,
1744                     "  %g %g %g %g y\n",last[2].x,last[2].y,
1745                     point[1].x,point[1].y);
1746                 else
1747                   (void) FormatLocaleString(message,MaxTextExtent,
1748                     "  %g %g %g %g %g %g c\n",last[2].x,
1749                     last[2].y,point[0].x,point[0].y,point[1].x,point[1].y);
1750             for (i=0; i < 3; i++)
1751               last[i]=point[i];
1752           }
1753         (void) ConcatenateString(&path,message);
1754         in_subpath=MagickTrue;
1755         knot_count--;
1756         /*
1757           Close the subpath if there are no more knots.
1758         */
1759         if (knot_count == 0)
1760           {
1761             /*
1762               Same special handling as above except we compare to the
1763               first point in the path and close the path.
1764             */
1765             if ((last[1].x == last[2].x) && (last[1].y == last[2].y) &&
1766                 (first[0].x == first[1].x) && (first[0].y == first[1].y))
1767               (void) FormatLocaleString(message,MaxTextExtent,
1768                 "  %g %g l z\n",first[1].x,first[1].y);
1769             else
1770               if ((last[1].x == last[2].x) && (last[1].y == last[2].y))
1771                 (void) FormatLocaleString(message,MaxTextExtent,
1772                   "  %g %g %g %g v z\n",first[0].x,first[0].y,
1773                   first[1].x,first[1].y);
1774               else
1775                 if ((first[0].x == first[1].x) && (first[0].y == first[1].y))
1776                   (void) FormatLocaleString(message,MaxTextExtent,
1777                     "  %g %g %g %g y z\n",last[2].x,last[2].y,
1778                     first[1].x,first[1].y);
1779                 else
1780                   (void) FormatLocaleString(message,MaxTextExtent,
1781                     "  %g %g %g %g %g %g c z\n",last[2].x,
1782                     last[2].y,first[0].x,first[0].y,first[1].x,first[1].y);
1783             (void) ConcatenateString(&path,message);
1784             in_subpath=MagickFalse;
1785           }
1786         break;
1787       }
1788       case 6:
1789       case 7:
1790       case 8:
1791       default:
1792       {
1793         blob+=24;
1794         length-=MagickMin(24,(ssize_t) length);
1795         break;
1796       }
1797     }
1798   }
1799   /*
1800     Returns an empty PS path if the path has no knots.
1801   */
1802   (void) FormatLocaleString(message,MaxTextExtent,"  eoclip\n");
1803   (void) ConcatenateString(&path,message);
1804   (void) FormatLocaleString(message,MaxTextExtent,"} bind def");
1805   (void) ConcatenateString(&path,message);
1806   message=DestroyString(message);
1807   return(path);
1808 }
1809
1810 static char *TraceSVGClippath(const unsigned char *blob,size_t length,
1811   const size_t columns,const size_t rows)
1812 {
1813   char
1814     *path,
1815     *message;
1816
1817   MagickBooleanType
1818     in_subpath;
1819
1820   PointInfo
1821     first[3],
1822     last[3],
1823     point[3];
1824
1825   register ssize_t
1826     i;
1827
1828   ssize_t
1829     knot_count,
1830     selector,
1831     x,
1832     y;
1833
1834   path=AcquireString((char *) NULL);
1835   if (path == (char *) NULL)
1836     return((char *) NULL);
1837   message=AcquireString((char *) NULL);
1838   (void) FormatLocaleString(message,MaxTextExtent,
1839     "<?xml version=\"1.0\" encoding=\"iso-8859-1\"?>\n");
1840   (void) ConcatenateString(&path,message);
1841   (void) FormatLocaleString(message,MaxTextExtent,
1842     "<svg width=\"%.20g\" height=\"%.20g\">\n",(double) columns,(double) rows);
1843   (void) ConcatenateString(&path,message);
1844   (void) FormatLocaleString(message,MaxTextExtent,"<g>\n");
1845   (void) ConcatenateString(&path,message);
1846   (void) FormatLocaleString(message,MaxTextExtent,
1847     "<path style=\"fill:#00000000;stroke:#00000000;");
1848   (void) ConcatenateString(&path,message);
1849   (void) FormatLocaleString(message,MaxTextExtent,
1850     "stroke-width:0;stroke-antialiasing:false\" d=\"\n");
1851   (void) ConcatenateString(&path,message);
1852   (void) ResetMagickMemory(point,0,sizeof(point));
1853   (void) ResetMagickMemory(first,0,sizeof(first));
1854   (void) ResetMagickMemory(last,0,sizeof(last));
1855   knot_count=0;
1856   in_subpath=MagickFalse;
1857   while (length != 0)
1858   {
1859     selector=(ssize_t) ((int) ReadPropertyMSBShort(&blob,&length));
1860     switch (selector)
1861     {
1862       case 0:
1863       case 3:
1864       {
1865         if (knot_count != 0)
1866           {
1867             blob+=24;
1868             length-=MagickMin(24,(ssize_t) length);
1869             break;
1870           }
1871         /*
1872           Expected subpath length record.
1873         */
1874         knot_count=(ssize_t) ((int) ReadPropertyMSBShort(&blob,&length));
1875         blob+=22;
1876         length-=MagickMin(22,(ssize_t) length);
1877         break;
1878       }
1879       case 1:
1880       case 2:
1881       case 4:
1882       case 5:
1883       {
1884         if (knot_count == 0)
1885           {
1886             /*
1887               Unexpected subpath knot.
1888             */
1889             blob+=24;
1890             length-=MagickMin(24,(ssize_t) length);
1891             break;
1892           }
1893         /*
1894           Add sub-path knot
1895         */
1896         for (i=0; i < 3; i++)
1897         {
1898           size_t
1899             xx,
1900             yy;
1901
1902           yy=(size_t) ((int) ReadPropertyMSBLong(&blob,&length));
1903           xx=(size_t) ((int) ReadPropertyMSBLong(&blob,&length));
1904           x=(ssize_t) xx;
1905           if (xx > 2147483647)
1906             x=(ssize_t) xx-4294967295U-1;
1907           y=(ssize_t) yy;
1908           if (yy > 2147483647)
1909             y=(ssize_t) yy-4294967295U-1;
1910           point[i].x=(double) x*columns/4096/4096;
1911           point[i].y=(double) y*rows/4096/4096;
1912         }
1913         if( IfMagickFalse(in_subpath) )
1914           {
1915             (void) FormatLocaleString(message,MaxTextExtent,"M %g,%g\n",
1916               point[1].x,point[1].y);
1917             for (i=0; i < 3; i++)
1918             {
1919               first[i]=point[i];
1920               last[i]=point[i];
1921             }
1922           }
1923         else
1924           {
1925             if ((last[1].x == last[2].x) && (last[1].y == last[2].y) &&
1926                 (point[0].x == point[1].x) && (point[0].y == point[1].y))
1927               (void) FormatLocaleString(message,MaxTextExtent,"L %g,%g\n",
1928                 point[1].x,point[1].y);
1929             else
1930               (void) FormatLocaleString(message,MaxTextExtent,
1931                 "C %g,%g %g,%g %g,%g\n",last[2].x,last[2].y,
1932                 point[0].x,point[0].y,point[1].x,point[1].y);
1933             for (i=0; i < 3; i++)
1934               last[i]=point[i];
1935           }
1936         (void) ConcatenateString(&path,message);
1937         in_subpath=MagickTrue;
1938         knot_count--;
1939         /*
1940           Close the subpath if there are no more knots.
1941         */
1942         if (knot_count == 0)
1943           {
1944             if ((last[1].x == last[2].x) && (last[1].y == last[2].y) &&
1945                 (first[0].x == first[1].x) && (first[0].y == first[1].y))
1946               (void) FormatLocaleString(message,MaxTextExtent,
1947                 "L %g,%g Z\n",first[1].x,first[1].y);
1948             else
1949               {
1950                 (void) FormatLocaleString(message,MaxTextExtent,
1951                   "C %g,%g %g,%g %g,%g Z\n",last[2].x,
1952                   last[2].y,first[0].x,first[0].y,first[1].x,first[1].y);
1953                 (void) ConcatenateString(&path,message);
1954               }
1955             in_subpath=MagickFalse;
1956           }
1957         break;
1958       }
1959       case 6:
1960       case 7:
1961       case 8:
1962       default:
1963       {
1964         blob+=24;
1965         length-=MagickMin(24,(ssize_t) length);
1966         break;
1967       }
1968     }
1969   }
1970   /*
1971     Return an empty SVG image if the path does not have knots.
1972   */
1973   (void) FormatLocaleString(message,MaxTextExtent,"\"/>\n");
1974   (void) ConcatenateString(&path,message);
1975   (void) FormatLocaleString(message,MaxTextExtent,"</g>\n");
1976   (void) ConcatenateString(&path,message);
1977   (void) FormatLocaleString(message,MaxTextExtent,"</svg>\n");
1978   (void) ConcatenateString(&path,message);
1979   message=DestroyString(message);
1980   return(path);
1981 }
1982
1983 MagickExport const char *GetImageProperty(const Image *image,
1984   const char *property,ExceptionInfo *exception)
1985 {
1986   FxInfo
1987     *fx_info;
1988
1989   double
1990     alpha;
1991
1992   MagickStatusType
1993     status;
1994
1995   register const char
1996     *p;
1997
1998   assert(image != (Image *) NULL);
1999   assert(image->signature == MagickSignature);
2000   if( IfMagickTrue(image->debug) )
2001     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2002   p=(const char *) NULL;
2003   if (image->properties != (void *) NULL)
2004     {
2005       if (property == (const char *) NULL)
2006         {
2007           ResetSplayTreeIterator((SplayTreeInfo *) image->properties);
2008           p=(const char *) GetNextValueInSplayTree((SplayTreeInfo *)
2009             image->properties);
2010           return(p);
2011         }
2012       if (LocaleNCompare("fx:",property,3) != 0) /* NOT %[fx:..] !!!! */
2013         {
2014           p=(const char *) GetValueFromSplayTree((SplayTreeInfo *)
2015             image->properties,property);
2016           if (p != (const char *) NULL)
2017             return(p);
2018         }
2019     }
2020   if ((property == (const char *) NULL) ||
2021       (strchr(property,':') == (char *) NULL))
2022     return(p);
2023   switch (*property)
2024   {
2025     case '8':
2026     {
2027       if (LocaleNCompare("8bim:",property,5) == 0)
2028         {
2029           if( IfMagickTrue(Get8BIMProperty(image,property,exception)) &&
2030               (image->properties != (void *) NULL))
2031             {
2032               p=(const char *) GetValueFromSplayTree((SplayTreeInfo *)
2033                 image->properties,property);
2034               return(p);
2035             }
2036         }
2037       break;
2038     }
2039     case 'E':
2040     case 'e':
2041     {
2042       if (LocaleNCompare("exif:",property,5) == 0)
2043         {
2044           if( IfMagickTrue(GetEXIFProperty(image,property,exception)) &&
2045               (image->properties != (void *) NULL))
2046             {
2047               p=(const char *) GetValueFromSplayTree((SplayTreeInfo *)
2048                 image->properties,property);
2049               return(p);
2050             }
2051         }
2052       break;
2053     }
2054     case 'F':
2055     case 'f':
2056     {
2057       if (LocaleNCompare("fx:",property,3) == 0)
2058         {
2059           fx_info=AcquireFxInfo(image,property+3,exception);
2060           status=FxEvaluateChannelExpression(fx_info,IntensityPixelChannel,0,0,
2061             &alpha,exception);
2062           fx_info=DestroyFxInfo(fx_info);
2063           if( IfMagickTrue(status) )
2064             {
2065               char
2066                 value[MaxTextExtent];
2067
2068               (void) FormatLocaleString(value,MaxTextExtent,"%.*g",
2069                 GetMagickPrecision(),(double) alpha);
2070               (void) SetImageProperty((Image *) image,property,value,exception);
2071             }
2072           if (image->properties != (void *) NULL)
2073             {
2074               p=(const char *) GetValueFromSplayTree((SplayTreeInfo *)
2075                 image->properties,property);
2076               return(p);
2077             }
2078         }
2079       break;
2080     }
2081     case 'I':
2082     case 'i':
2083     {
2084       if (LocaleNCompare("iptc:",property,5) == 0)
2085         {
2086           if( IfMagickTrue(GetIPTCProperty(image,property,exception)) &&
2087               (image->properties != (void *) NULL))
2088             {
2089               p=(const char *) GetValueFromSplayTree((SplayTreeInfo *)
2090                 image->properties,property);
2091               return(p);
2092             }
2093         }
2094       break;
2095     }
2096     case 'P':
2097     case 'p':
2098     {
2099       if (LocaleNCompare("pixel:",property,6) == 0)
2100         {
2101           PixelInfo
2102             pixel;
2103
2104           GetPixelInfo(image,&pixel);
2105           fx_info=AcquireFxInfo(image,property+6,exception);
2106           status=FxEvaluateChannelExpression(fx_info,RedPixelChannel,0,0,
2107             &alpha,exception);
2108           pixel.red=(double) QuantumRange*alpha;
2109           status|=FxEvaluateChannelExpression(fx_info,GreenPixelChannel,0,0,
2110             &alpha,exception);
2111           pixel.green=(double) QuantumRange*alpha;
2112           status|=FxEvaluateChannelExpression(fx_info,BluePixelChannel,0,0,
2113             &alpha,exception);
2114           pixel.blue=(double) QuantumRange*alpha;
2115           if (image->colorspace == CMYKColorspace)
2116             {
2117               status|=FxEvaluateChannelExpression(fx_info,BlackPixelChannel,0,0,
2118                 &alpha,exception);
2119               pixel.black=(double) QuantumRange*alpha;
2120             }
2121           status|=FxEvaluateChannelExpression(fx_info,AlphaPixelChannel,0,0,
2122             &alpha,exception);
2123           pixel.alpha=(double) QuantumRange*(1.0-alpha);
2124           fx_info=DestroyFxInfo(fx_info);
2125           if( IfMagickTrue(status) )
2126             {
2127               char
2128                 name[MaxTextExtent];
2129
2130               (void) QueryColorname(image,&pixel,SVGCompliance,name,
2131                 exception);
2132               (void) SetImageProperty((Image *) image,property,name,exception);
2133               return(GetImageProperty(image,property,exception));
2134             }
2135         }
2136       break;
2137     }
2138     case 'X':
2139     case 'x':
2140     {
2141       if (LocaleNCompare("xmp:",property,4) == 0)
2142         {
2143           if( IfMagickTrue(GetXMPProperty(image,property)) &&
2144               (image->properties != (void *) NULL))
2145             {
2146               p=(const char *) GetValueFromSplayTree((SplayTreeInfo *)
2147                 image->properties,property);
2148               return(p);
2149             }
2150         }
2151       break;
2152     }
2153     default:
2154       break;
2155   }
2156   return(p);
2157 }
2158 \f
2159 /*
2160 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2161 %                                                                             %
2162 %                                                                             %
2163 %                                                                             %
2164 +   G e t M a g i c k P r o p e r t y                                         %
2165 %                                                                             %
2166 %                                                                             %
2167 %                                                                             %
2168 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2169 %
2170 %  GetMagickProperty() gets attributes or calculated values that is associated
2171 %  with a fixed known property name, or single letter property.
2172 %
2173 %  This does not return, special profile or property expressions. Nor does it
2174 %  return free-form property strings, unless referenced by a single letter
2175 %  property name.
2176 %
2177 %  The returned string is stored as the image artifact 'get-property' (not as
2178 %  another property), and as such should not be freed. Later calls however
2179 %  will overwrite this value so if needed for a longer period a copy should be
2180 %  made.  This artifact can be deleted when no longer required.
2181 %
2182 %  The format of the GetMagickProperty method is:
2183 %
2184 %      const char *GetMagickProperty(const ImageInfo *image_info,Image *image,
2185 %        const char *property,ExceptionInfo *exception)
2186 %
2187 %  A description of each parameter follows:
2188 %
2189 %    o image_info: the image info.
2190 %
2191 %    o image: the image.
2192 %
2193 %    o key: the key.
2194 %
2195 %    o exception: return any errors or warnings in this structure.
2196 %
2197 */
2198 static const char *GetMagickPropertyLetter(const ImageInfo *image_info,
2199   Image *image,const char letter,ExceptionInfo *exception)
2200 {
2201   char
2202     value[MaxTextExtent];
2203
2204   const char
2205     *string;
2206
2207   if (image != (Image *) NULL && IfMagickTrue(image->debug))
2208     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2209   *value='\0';  /* formatted string */
2210   string=(char *) NULL;  /* constant string reference */
2211   switch (letter)
2212   {
2213     case 'b':  /* image size read in - in bytes */
2214     {
2215       (void) FormatLocaleString(value,MaxTextExtent,"%.20g",(double)
2216         ((MagickOffsetType) image->extent));
2217       if (image->extent != (MagickSizeType) ((size_t) image->extent))
2218         (void) FormatMagickSize(image->extent,MagickFalse,value);
2219       ConcatenateMagickString(value,"B",MaxTextExtent);
2220       break;
2221     }
2222     case 'c':  /* image comment property - empty string by default */
2223     {
2224       string=GetImageProperty(image,"comment",exception);
2225       if (string == (const char *) NULL)
2226         string="";
2227       break;
2228     }
2229     case 'd':  /* Directory component of filename */
2230     {
2231       GetPathComponent(image->magick_filename,HeadPath,value);
2232       break;
2233     }
2234     case 'e': /* Filename extension (suffix) of image file */
2235     {
2236       GetPathComponent(image->magick_filename,ExtensionPath,value);
2237       break;
2238     }
2239     case 'f': /* Filename without directory component */
2240     {
2241       GetPathComponent(image->magick_filename,TailPath,value);
2242       break;
2243     }
2244     case 'g': /* Image geometry, canvas and offset  %Wx%H+%X+%Y */
2245     {
2246       (void) FormatLocaleString(value,MaxTextExtent,"%.20gx%.20g%+.20g%+.20g",
2247         (double) image->page.width,(double) image->page.height,
2248         (double) image->page.x,(double) image->page.y);
2249       break;
2250     }
2251     case 'h': /* Image height (current) */
2252     {
2253       (void) FormatLocaleString(value,MaxTextExtent,"%.20g",(double)
2254         (image->rows != 0 ? image->rows : image->magick_rows));
2255       break;
2256     }
2257     case 'i': /* Filename last used for image (read or write) */
2258     {
2259       string=image->filename;
2260       break;
2261     }
2262     case 'k': /* Number of unique colors  */
2263     {
2264       /*
2265         FUTURE: ensure this does not generate the formatted comment!
2266       */
2267       (void) FormatLocaleString(value,MaxTextExtent,"%.20g",(double)
2268         GetNumberColors(image,(FILE *) NULL,exception));
2269       break;
2270     }
2271     case 'l': /* Image label property - empty string by default */
2272     {
2273       string=GetImageProperty(image,"label",exception);
2274       if ( string == (const char *)NULL)
2275         string="";
2276       break;
2277     }
2278     case 'm': /* Image format (file magick) */
2279     {
2280       string=image->magick;
2281       break;
2282     }
2283     case 'n': /* Number of images in the list.  */
2284     {
2285       (void) FormatLocaleString(value,MaxTextExtent,"%.20g",(double)
2286         GetImageListLength(image));
2287       break;
2288     }
2289     case 'o': /* Output Filename - for delegate use only */
2290     {
2291       string=image_info->filename;
2292       break;
2293     }
2294     case 'p': /* Image index in current image list -- As 'n' OBSOLETE */
2295     {
2296       (void) FormatLocaleString(value,MaxTextExtent,"%.20g",(double)
2297         GetImageIndexInList(image));
2298       break;
2299     }
2300     case 'q': /* Quantum depth of image in memory */
2301     {
2302       (void) FormatLocaleString(value,MaxTextExtent,"%.20g",(double)
2303         MAGICKCORE_QUANTUM_DEPTH);
2304       break;
2305     }
2306     case 'r': /* Image storage class and colorspace.  */
2307     {
2308       ColorspaceType
2309         colorspace;
2310
2311       colorspace=image->colorspace;
2312       if (IfMagickTrue(IsImageGray(image,exception)))
2313         colorspace=GRAYColorspace;
2314       (void) FormatLocaleString(value,MaxTextExtent,"%s %s %s",
2315         CommandOptionToMnemonic(MagickClassOptions,(ssize_t) image->storage_class),
2316         CommandOptionToMnemonic(MagickColorspaceOptions,(ssize_t) colorspace),
2317         IfMagickTrue(image->matte) ? "Matte" : "");
2318       break;
2319     }
2320     case 's': /* Image scene number */
2321     {
2322       if (image_info->number_scenes != 0)
2323         (void) FormatLocaleString(value,MaxTextExtent,"%.20g",(double)
2324           image_info->scene);
2325       else
2326         (void) FormatLocaleString(value,MaxTextExtent,"%.20g",(double)
2327           image->scene);
2328       break;
2329     }
2330     case 't': /* Base filename without directory or extention */
2331     {
2332       GetPathComponent(image->magick_filename,BasePath,value);
2333       break;
2334     }
2335     case 'u': /* Unique filename */
2336     {
2337       string=image_info->unique;
2338       break;
2339     }
2340     case 'w': /* Image width (current) */
2341     {
2342       (void) FormatLocaleString(value,MaxTextExtent,"%.20g",(double)
2343         (image->columns != 0 ? image->columns : image->magick_columns));
2344       break;
2345     }
2346     case 'x': /* Image horizontal resolution (with units) */
2347     {
2348       (void) FormatLocaleString(value,MaxTextExtent,"%g %s",
2349         image->resolution.x,CommandOptionToMnemonic(
2350         MagickResolutionOptions,(ssize_t)image->units));
2351       break;
2352     }
2353     case 'y': /* Image vertical resolution (with units) */
2354     {
2355       (void) FormatLocaleString(value,MaxTextExtent,"%g %s",
2356         image->resolution.y,CommandOptionToMnemonic(MagickResolutionOptions,
2357         (ssize_t) image->units));
2358       break;
2359     }
2360     case 'z': /* Image depth as read in */
2361     {
2362       (void) FormatLocaleString(value,MaxTextExtent,"%.20g",(double)
2363         image->depth);
2364       break;
2365     }
2366     case 'A': /* Image alpha channel  */
2367     {
2368       (void) FormatLocaleString(value,MaxTextExtent,"%s",
2369         CommandOptionToMnemonic(MagickBooleanOptions,(ssize_t) image->matte));
2370       break;
2371     }
2372     case 'C': /* Image compression method.  */
2373     {
2374       (void) FormatLocaleString(value,MaxTextExtent,"%s",
2375         CommandOptionToMnemonic(MagickCompressOptions,(ssize_t)
2376           image->compression));
2377       break;
2378     }
2379     case 'D': /* Image dispose method.  */
2380     {
2381       (void) FormatLocaleString(value,MaxTextExtent,"%s",
2382         CommandOptionToMnemonic(MagickDisposeOptions,(ssize_t) image->dispose));
2383       break;
2384     }
2385     case 'G': /* Image size as geometry = "%wx%h" */
2386     {
2387       (void) FormatLocaleString(value,MaxTextExtent,"%.20gx%.20g",
2388         (double)image->magick_columns,(double) image->magick_rows);
2389       break;
2390     }
2391     case 'H': /* layer canvas height */
2392     {
2393       (void) FormatLocaleString(value,MaxTextExtent,"%.20g",(double)
2394         image->page.height);
2395       break;
2396     }
2397     case 'M': /* Magick filename - filename given incl. coder & read mods */
2398     {
2399       string=image->magick_filename;
2400       break;
2401     }
2402     case 'O': /* layer canvas offset with sign = "+%X+%Y" */
2403     {
2404       (void) FormatLocaleString(value,MaxTextExtent,"%+ld%+ld",(long)
2405         image->page.x,(long) image->page.y);
2406       break;
2407     }
2408     case 'P': /* layer canvas page size = "%Wx%H" */
2409     {
2410       (void) FormatLocaleString(value,MaxTextExtent,"%.20gx%.20g",
2411         (double) image->page.width,(double) image->page.height);
2412       break;
2413     }
2414     case 'Q': /* image compression quality */
2415     {
2416       (void) FormatLocaleString(value,MaxTextExtent,"%.20g",(double)
2417         image->quality);
2418       break;
2419     }
2420     case 'S': /* Image scenes  ???? */
2421     {
2422       if (image_info->number_scenes == 0)
2423         string="2147483647";
2424       else
2425         (void) FormatLocaleString(value,MaxTextExtent,"%.20g",(double)
2426           image_info->scene+image_info->number_scenes);
2427       break;
2428     }
2429     case 'T': /* image time delay for animations */
2430     {
2431       (void) FormatLocaleString(value,MaxTextExtent,"%.20g",(double)
2432         image->delay);
2433       break;
2434     }
2435     case 'W': /* layer canvas width */
2436     {
2437       (void) FormatLocaleString(value,MaxTextExtent,"%.20g",(double)
2438         image->page.width);
2439       break;
2440     }
2441     case 'X': /* layer canvas X offset */
2442     {
2443       (void) FormatLocaleString(value,MaxTextExtent,"%+.20g",(double)
2444         image->page.x);
2445       break;
2446     }
2447     case 'Y': /* layer canvas Y offset */
2448     {
2449       (void) FormatLocaleString(value,MaxTextExtent,"%+.20g",(double)
2450         image->page.y);
2451       break;
2452     }
2453     case 'Z': /* Zero filename ??? */
2454     {
2455       string=image_info->zero;
2456       break;
2457     }
2458     case '@': /* Trim bounding box, without Trimming! */
2459     {
2460       RectangleInfo
2461         page;
2462
2463       page=GetImageBoundingBox(image,exception);
2464       (void) FormatLocaleString(value,MaxTextExtent,"%.20gx%.20g%+.20g%+.20g",
2465         (double) page.width,(double) page.height,(double) page.x,(double)
2466         page.y);
2467       break;
2468     }
2469     case '#': /* Image signature */
2470     {
2471       (void) SignatureImage(image,exception);
2472       string=GetImageProperty(image,"signature",exception);
2473       break;
2474     }
2475     case '%': /* percent escaped */
2476     {
2477       string="%";
2478       break;
2479     }
2480   }
2481   if (*value != '\0')
2482     string=value;
2483   if (string != (char *) NULL)
2484     {
2485       (void) SetImageArtifact(image,"get-property",string);
2486       return(GetImageArtifact(image,"get-property"));
2487     }
2488   return((char *)NULL);
2489 }
2490
2491 MagickExport const char *GetMagickProperty(const ImageInfo *image_info,
2492   Image *image,const char *property,ExceptionInfo *exception)
2493 {
2494   char
2495     value[MaxTextExtent];
2496
2497   const char
2498     *string;
2499
2500   assert(property[0] != '\0');
2501   if (property[1] == '\0')  /* single letter property request */
2502     return(GetMagickPropertyLetter(image_info,image,*property,exception));
2503   if ((image != (Image *) NULL) && IfMagickTrue(image->debug))
2504     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2505   *value='\0';  /* formated string */
2506   string=(char *) NULL;  /* constant string reference */
2507   switch (*property)
2508   {
2509     case 'b':
2510     {
2511       if ((LocaleCompare("base",property) == 0) ||
2512           (LocaleCompare("basename",property) == 0) )
2513         {
2514           GetPathComponent(image->magick_filename,BasePath,value);
2515           break;
2516         }
2517       break;
2518     }
2519     case 'c':
2520     {
2521       if (LocaleCompare("channels",property) == 0)
2522         {
2523           /* FUTURE: return actual image channels */
2524           (void) FormatLocaleString(value,MaxTextExtent,"%s",
2525             CommandOptionToMnemonic(MagickColorspaceOptions,(ssize_t)
2526             image->colorspace));
2527           LocaleLower(value);
2528           if( IfMagickTrue(image->matte) )
2529             (void) ConcatenateMagickString(value,"a",MaxTextExtent);
2530           break;
2531         }
2532       if (LocaleCompare("colorspace",property) == 0)
2533         {
2534           ColorspaceType
2535             colorspace;
2536
2537           /* FUTURE: return actual colorspace - no 'gray' stuff */
2538           colorspace=image->colorspace;
2539           if( IfMagickTrue(IsImageGray(image,exception)) )
2540             colorspace=GRAYColorspace;
2541           string=CommandOptionToMnemonic(MagickColorspaceOptions,(ssize_t)
2542             colorspace);
2543           break;
2544         }
2545       if (LocaleCompare("copyright",property) == 0)
2546         {
2547           (void) CopyMagickString(value,GetMagickCopyright(),MaxTextExtent);
2548           break;
2549         }
2550       break;
2551     }
2552     case 'd':
2553     {
2554       if (LocaleCompare("depth",property) == 0)
2555         {
2556           (void) FormatLocaleString(value,MaxTextExtent,"%.20g",(double)
2557             image->depth);
2558           break;
2559         }
2560       if (LocaleCompare("directory",property) == 0)
2561         {
2562           GetPathComponent(image->magick_filename,HeadPath,value);
2563           break;
2564         }
2565       break;
2566     }
2567     case 'e':
2568     {
2569       if (LocaleCompare("extension",property) == 0)
2570         {
2571           GetPathComponent(image->magick_filename,ExtensionPath,value);
2572           break;
2573         }
2574       break;
2575     }
2576     case 'g':
2577     {
2578       if (LocaleCompare("gamma",property) == 0)
2579         {
2580           (void) FormatLocaleString(value,MaxTextExtent,"%.*g",
2581             GetMagickPrecision(),image->gamma);
2582           break;
2583         }
2584       if ( (image_info != (ImageInfo *) NULL) &&
2585            (LocaleCompare("group",property) == 0) )
2586         {
2587           (void) FormatLocaleString(value,MaxTextExtent,"0x%lx",(unsigned long)
2588             image_info->group);
2589           break;
2590         }
2591       break;
2592     }
2593     case 'h':
2594     {
2595       if (LocaleCompare("height",property) == 0)
2596         {
2597           (void) FormatLocaleString(value,MaxTextExtent,"%.20g",
2598             image->magick_rows != 0 ? (double) image->magick_rows : 256.0);
2599           break;
2600         }
2601       break;
2602     }
2603     case 'i':
2604     {
2605       if (LocaleCompare("input",property) == 0)
2606         {
2607           string=image->filename;
2608           break;
2609         }
2610       break;
2611     }
2612     case 'k':
2613     {
2614       if (LocaleCompare("kurtosis",property) == 0)
2615         {
2616           double
2617             kurtosis,
2618             skewness;
2619
2620           (void) GetImageKurtosis(image,&kurtosis,&skewness,exception);
2621           (void) FormatLocaleString(value,MaxTextExtent,"%.*g",
2622             GetMagickPrecision(),kurtosis);
2623           break;
2624         }
2625       break;
2626     }
2627     case 'm':
2628     {
2629       if (LocaleCompare("magick",property) == 0)
2630         {
2631           string=image->magick;
2632           break;
2633         }
2634       if (LocaleCompare("max",property) == 0)
2635         {
2636           double
2637             maximum,
2638             minimum;
2639
2640           (void) GetImageRange(image,&minimum,&maximum,exception);
2641           (void) FormatLocaleString(value,MaxTextExtent,"%.*g",
2642             GetMagickPrecision(),maximum);
2643           break;
2644         }
2645       if (LocaleCompare("mean",property) == 0)
2646         {
2647           double
2648             mean,
2649             standard_deviation;
2650
2651           (void) GetImageMean(image,&mean,&standard_deviation,exception);
2652           (void) FormatLocaleString(value,MaxTextExtent,"%.*g",
2653             GetMagickPrecision(),mean);
2654           break;
2655         }
2656       if (LocaleCompare("min",property) == 0)
2657         {
2658           double
2659             maximum,
2660             minimum;
2661
2662           (void) GetImageRange(image,&minimum,&maximum,exception);
2663           (void) FormatLocaleString(value,MaxTextExtent,"%.*g",
2664             GetMagickPrecision(),minimum);
2665           break;
2666         }
2667       break;
2668     }
2669     case 'o':
2670     {
2671       if (LocaleCompare("opaque",property) == 0)
2672         {
2673           MagickBooleanType
2674             opaque;
2675
2676           opaque=IsImageOpaque(image,exception);
2677           (void) CopyMagickString(value,IfMagickTrue(opaque)?"true":"false",
2678                MaxTextExtent);
2679           break;
2680         }
2681       if (LocaleCompare("orientation",property) == 0)
2682         {
2683           string=CommandOptionToMnemonic(MagickOrientationOptions,(ssize_t)
2684             image->orientation);
2685           break;
2686         }
2687       if ((image_info != (ImageInfo *) NULL) &&
2688           (LocaleCompare("output",property) == 0))
2689         {
2690           (void) CopyMagickString(value,image_info->filename,MaxTextExtent);
2691           break;
2692         }
2693      break;
2694     }
2695     case 'p':
2696     {
2697       if (LocaleCompare("page",property) == 0)
2698         {
2699           (void) FormatLocaleString(value,MaxTextExtent,"%.20g",(double)
2700             GetImageIndexInList(image)+1);
2701           break;
2702         }
2703       break;
2704     }
2705     case 'r':
2706     {
2707       /* This matches %[fx:resolution.x] */
2708       if (LocaleCompare("resolution.x",property) == 0)
2709         {
2710           (void) FormatLocaleString(value,MaxTextExtent,"%g",
2711             image->resolution.x);
2712           break;
2713         }
2714       /* This matches %[fx:resolution.y] */
2715       if (LocaleCompare("resolution.y",property) == 0)
2716         {
2717           (void) FormatLocaleString(value,MaxTextExtent,"%g",
2718             image->resolution.y);
2719           break;
2720         }
2721       break;
2722     }
2723     case 's':
2724     {
2725       if (LocaleCompare("scene",property) == 0)
2726         {
2727           if ((image_info != (ImageInfo *) NULL) &&
2728               (image_info->number_scenes != 0))
2729             (void) FormatLocaleString(value,MaxTextExtent,"%.20g",(double)
2730               image_info->scene);
2731           else
2732             (void) FormatLocaleString(value,MaxTextExtent,"%.20g",(double)
2733               image->scene);
2734           break;
2735         }
2736       if (LocaleCompare("scenes",property) == 0)
2737         {
2738           (void) FormatLocaleString(value,MaxTextExtent,"%.20g",(double)
2739             GetImageListLength(image));
2740           break;
2741         }
2742       if (LocaleCompare("size",property) == 0)
2743         {
2744           char
2745             format[MaxTextExtent];
2746
2747           (void) FormatMagickSize(GetBlobSize(image),MagickFalse,format);
2748           (void) FormatLocaleString(value,MaxTextExtent,"%sB",format);
2749           break;
2750         }
2751       if (LocaleCompare("skewness",property) == 0)
2752         {
2753           double
2754             kurtosis,
2755             skewness;
2756
2757           (void) GetImageKurtosis(image,&kurtosis,&skewness,exception);
2758           (void) FormatLocaleString(value,MaxTextExtent,"%.*g",
2759             GetMagickPrecision(),skewness);
2760           break;
2761         }
2762       if (LocaleCompare("standard-deviation",property) == 0)
2763         {
2764           double
2765             mean,
2766             standard_deviation;
2767
2768           (void) GetImageMean(image,&mean,&standard_deviation,
2769             exception);
2770           (void) FormatLocaleString(value,MaxTextExtent,"%.*g",
2771             GetMagickPrecision(),standard_deviation);
2772           break;
2773         }
2774        break;
2775     }
2776     case 't':
2777     {
2778       if (LocaleCompare("type",property) == 0)
2779         {
2780           string=CommandOptionToMnemonic(MagickTypeOptions,(ssize_t)
2781             GetImageType(image,exception));
2782           break;
2783         }
2784        break;
2785     }
2786     case 'u':
2787     {
2788       if ((image_info != (ImageInfo *) NULL) &&
2789           (LocaleCompare("unique",property) == 0))
2790         {
2791           string=image_info->unique;
2792           break;
2793         }
2794       break;
2795     }
2796     case 'v':
2797     {
2798       if (LocaleCompare("version",property) == 0)
2799         {
2800           string=GetMagickVersion((size_t *) NULL);
2801           break;
2802         }
2803       break;
2804     }
2805     case 'w':
2806     {
2807       if (LocaleCompare("width",property) == 0)
2808         {
2809           (void) FormatLocaleString(value,MaxTextExtent,"%.20g",(double)
2810             (image->magick_columns != 0 ? image->magick_columns : 256));
2811           break;
2812         }
2813       break;
2814     }
2815     case 'x': /* FUTURE: Obsolete X resolution */
2816     {
2817       if ((LocaleCompare("xresolution",property) == 0) ||
2818           (LocaleCompare("x-resolution",property) == 0) )
2819         {
2820           (void) FormatLocaleString(value,MaxTextExtent,"%.20g",
2821             image->resolution.x);
2822           break;
2823         }
2824       break;
2825     }
2826     case 'y': /* FUTURE: Obsolete Y resolution */
2827     {
2828       if ((LocaleCompare("yresolution",property) == 0) ||
2829           (LocaleCompare("y-resolution",property) == 0) )
2830         {
2831           (void) FormatLocaleString(value,MaxTextExtent,"%.20g",
2832             image->resolution.y);
2833           break;
2834         }
2835       break;
2836     }
2837     case 'z':
2838     {
2839       if ((image_info != (ImageInfo *) NULL) &&
2840           (LocaleCompare("zero",property) == 0))
2841         {
2842           string=image_info->zero;
2843           break;
2844         }
2845       break;
2846     }
2847   }
2848   if (*value != '\0')
2849     string=value;
2850   if (string != (char *)NULL)
2851     {
2852       (void) SetImageArtifact(image,"get-property", string);
2853       return(GetImageArtifact(image,"get-property"));
2854     }
2855   return((char *)NULL);
2856 }
2857 \f
2858 /*
2859 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2860 %                                                                             %
2861 %                                                                             %
2862 %                                                                             %
2863 %   G e t N e x t I m a g e P r o p e r t y                                   %
2864 %                                                                             %
2865 %                                                                             %
2866 %                                                                             %
2867 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2868 %
2869 %  GetNextImageProperty() gets the next free-form string property name.
2870 %
2871 %  The format of the GetNextImageProperty method is:
2872 %
2873 %      char *GetNextImageProperty(const Image *image)
2874 %
2875 %  A description of each parameter follows:
2876 %
2877 %    o image: the image.
2878 %
2879 */
2880 MagickExport char *GetNextImageProperty(const Image *image)
2881 {
2882   assert(image != (Image *) NULL);
2883   assert(image->signature == MagickSignature);
2884   if( IfMagickTrue(image->debug) )
2885     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
2886       image->filename);
2887   if (image->properties == (void *) NULL)
2888     return((char *) NULL);
2889   return((char *) GetNextKeyInSplayTree((SplayTreeInfo *) image->properties));
2890 }
2891 \f
2892 /*
2893 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2894 %                                                                             %
2895 %                                                                             %
2896 %                                                                             %
2897 %   I n t e r p r e t I m a g e P r o p e r t i e s                           %
2898 %                                                                             %
2899 %                                                                             %
2900 %                                                                             %
2901 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2902 %
2903 %  InterpretImageProperties() replaces any embedded formatting characters with
2904 %  the appropriate image property and returns the interpreted text.
2905 %
2906 %  This searches for and replaces
2907 %     \n \r \%          replaced by newline, return, and percent resp.
2908 %     &lt; &gt; &amp;   replaced by '<', '>', '&' resp.
2909 %     %%                replaced by percent
2910 %
2911 %     %x %[x]       where 'x' is a single letter properity, case sensitive).
2912 %     %[type:name]  where 'type' a is special and known prefix.
2913 %     %[name]       where 'name' is a specifically known attribute, calculated
2914 %                   value, or a per-image property string name, or a per-image
2915 %                   'artifact' (as generated from a global option).
2916 %                   It may contain ':' as long as the prefix is not special.
2917 %
2918 %  Single letter % substitutions will only happen if the character before the
2919 %  percent is NOT a number. But braced substitutions will always be performed.
2920 %  This prevents the typical usage of percent in a interpreted geometry
2921 %  argument from being substituted when the percent is a geometry flag.
2922 %
2923 %  If 'glob-expresions' ('*' or '?' characters) is used for 'name' it may be
2924 %  used as a search pattern to print multiple lines of "name=value\n" pairs of
2925 %  the associacted set of properities.
2926 %
2927 %  The returned string must be freed using DestoryString() by the caller.
2928 %
2929 %  The format of the InterpretImageProperties method is:
2930 %
2931 %      char *InterpretImageProperties(const ImageInfo *image_info,
2932 %        Image *image,const char *embed_text,ExceptionInfo *exception)
2933 %
2934 %  A description of each parameter follows:
2935 %
2936 %    o image_info: the image info.
2937 %
2938 %    o image: the image.
2939 %
2940 %    o embed_text: the address of a character string containing the embedded
2941 %      formatting characters.
2942 %
2943 %    o exception: return any errors or warnings in this structure.
2944 %
2945 */
2946 MagickExport char *InterpretImageProperties(const ImageInfo *image_info,
2947   Image *image,const char *embed_text,ExceptionInfo *exception)
2948 {
2949   char
2950     *interpret_text;
2951
2952   register char
2953     *q;
2954
2955   register const char
2956     *p;
2957
2958   size_t
2959     extent,
2960     length;
2961
2962   MagickBooleanType
2963     number;
2964
2965   assert(image != (Image *) NULL);
2966   assert(image->signature == MagickSignature);
2967   if( IfMagickTrue(image->debug) )
2968     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2969
2970   if ((embed_text == (const char *) NULL))
2971     return((char *) NULL);
2972   p=embed_text;
2973
2974   if (*p == '\0')
2975     return(ConstantString(""));
2976
2977   /* handle a '@' replace string from file */
2978   if (*p == '@') {
2979      p++;
2980      if (*p != '-' && IfMagickFalse(IsPathAccessible(p)) ) {
2981        (void) ThrowMagickException(exception,GetMagickModule(),
2982            OptionError,"UnableToAccessPath","%s",p);
2983        return((char *) NULL);
2984      }
2985      return(FileToString(p,~0,exception));
2986   }
2987
2988   /*
2989     Translate any embedded format characters.
2990   */
2991   interpret_text=AcquireString(embed_text); /* new string with extra space */
2992   extent=MaxTextExtent;                     /* how many extra space */
2993   number=MagickFalse;                       /* is last char a number? */
2994   for (q=interpret_text; *p!='\0'; number=IsMagickTrue(isdigit(*p)),p++)
2995   {
2996     *q='\0';
2997     if ((size_t) (q-interpret_text+MaxTextExtent) >= extent)
2998       {
2999         extent+=MaxTextExtent;
3000         interpret_text=(char *) ResizeQuantumMemory(interpret_text,extent+
3001           MaxTextExtent+1,sizeof(*interpret_text));
3002         if (interpret_text == (char *) NULL)
3003           return((char *) NULL);
3004         q=interpret_text+strlen(interpret_text);
3005       }
3006     /*
3007       Look for the various escapes, (and handle other specials)
3008     */
3009     switch (*p) {
3010       case '\\':
3011         switch (*(p+1)) {
3012           case '\0':
3013             continue;
3014           case 'r':       /* convert to RETURN */
3015             *q++='\r';
3016             p++;
3017             continue;
3018           case 'n':       /* convert to NEWLINE */
3019             *q++='\n';
3020             p++;
3021             continue;
3022           case '\n':      /* EOL removal UNIX,MacOSX */
3023             p++;
3024             continue;
3025           case '\r':      /* EOL removal DOS,Windows */
3026             p++;
3027             if (*p == '\n') /* return-newline EOL */
3028               p++;
3029             continue;
3030           default:
3031             p++;
3032             *q++=(*p);
3033             continue;
3034         }
3035         continue; /* never reached! */
3036       case '&':
3037         if (LocaleNCompare("&lt;",p,4) == 0)
3038           *q++='<', p+=3;
3039         else if (LocaleNCompare("&gt;",p,4) == 0)
3040           *q++='>', p+=3;
3041         else if (LocaleNCompare("&amp;",p,5) == 0)
3042           *q++='&', p+=4;
3043         else
3044           *q++=(*p);
3045         continue;
3046       case '%':
3047         break;      /* continue to next set of handlers */
3048       default:
3049         *q++=(*p);  /* any thing else is 'as normal' */
3050         continue;
3051     }
3052     p++; /* advance beyond the percent */
3053
3054     /*
3055       Doubled Percent - or percent at end of string
3056     */
3057     if ( *p == '\0' )
3058        p--;
3059     if ( *p == '%' ) {
3060         *q++='%';
3061         continue;
3062       }
3063
3064     /*
3065       Single letter escapes  %c
3066     */
3067     if ( *p != '[' ) {
3068       const char
3069         *value;
3070
3071       /* But only if not preceeded by a number! */
3072       if ( IfMagickTrue(number) ) {
3073         *q++='%'; /* do NOT substitute the percent */
3074         p--;      /* back up one */
3075         continue;
3076       }
3077       value=GetMagickPropertyLetter(image_info,image,*p, exception);
3078       if (value != (char *) NULL) {
3079         length=strlen(value);
3080         if ((size_t) (q-interpret_text+length+1) >= extent)
3081           {
3082             extent+=length;
3083             interpret_text=(char *) ResizeQuantumMemory(interpret_text,
3084               extent+MaxTextExtent,sizeof(*interpret_text));
3085             if (interpret_text == (char *) NULL)
3086               return((char *)NULL);
3087             q=interpret_text+strlen(interpret_text);
3088           }
3089         (void) CopyMagickString(q,value,extent);
3090         q+=length;
3091         continue;
3092       }
3093       (void) ThrowMagickException(exception,GetMagickModule(),
3094           OptionWarning,"UnknownImageProperty","\"%%%c\"",*p);
3095       continue;
3096     }
3097
3098     /*
3099       Braced Percent Escape  %[...]
3100     */
3101     {
3102       char
3103         pattern[MaxTextExtent];
3104
3105       const char
3106         *key,
3107         *value;
3108
3109       register ssize_t
3110         len;
3111
3112       ssize_t
3113         depth;
3114
3115       /* get the string framed by the %[...] */
3116       p++;  /* advance p to just inside the opening brace */
3117       depth=1;
3118       if ( *p == ']' ) {
3119         (void) ThrowMagickException(exception,GetMagickModule(),
3120             OptionWarning,"UnknownImageProperty","\"%%[]\"");
3121         break;
3122       }
3123       for (len=0; len<(MaxTextExtent-1L) && (*p != '\0');)
3124       {
3125         /* skip escaped braces within braced pattern */
3126         if ( (*p == '\\') && (*(p+1) != '\0') ) {
3127           pattern[len++]=(*p++);
3128           pattern[len++]=(*p++);
3129           continue;
3130         }
3131         if (*p == '[')
3132           depth++;
3133         if (*p == ']')
3134           depth--;
3135         if (depth <= 0)
3136           break;
3137         pattern[len++]=(*p++);
3138       }
3139       pattern[len]='\0';
3140       /* Check for unmatched final ']' for "%[...]" */
3141       if ( depth != 0 ) {
3142         if (len >= 64) {  /* truncate string for error message */
3143           pattern[61] = '.';
3144           pattern[62] = '.';
3145           pattern[63] = '.';
3146           pattern[64] = '\0';
3147         }
3148         (void) ThrowMagickException(exception,GetMagickModule(),
3149             OptionError,"UnbalancedBraces","\"%%[%s\"",pattern);
3150         interpret_text=DestroyString(interpret_text);
3151         return((char *)NULL);
3152       }
3153
3154       /*
3155         Special Property Prefixes
3156         such as: %[exif:...] %[fx:...] %[pixel:...]
3157         Otherwise a free-form property string
3158       */
3159       value=GetImageProperty(image,pattern,exception);
3160       if (value != (const char *) NULL)
3161         {
3162           length=strlen(value);
3163           if ((size_t) (q-interpret_text+length+1) >= extent)
3164             {
3165               extent+=length;
3166               interpret_text=(char *) ResizeQuantumMemory(interpret_text,
3167                 extent+MaxTextExtent,sizeof(*interpret_text));
3168               if (interpret_text == (char *) NULL)
3169                 return((char *)NULL);
3170               q=interpret_text+strlen(interpret_text);
3171             }
3172           (void) CopyMagickString(q,value,extent);
3173           q+=length;
3174           continue;
3175         }
3176       /*
3177         Handle property 'glob' patterns
3178         Such as:  %[*]   %[user:array_??]  %[filename:e*]
3179       */
3180       if( IfMagickTrue(IsGlob(pattern)) )
3181         {
3182           ResetImagePropertyIterator(image);
3183           key=GetNextImageProperty(image);
3184           while (key != (const char *) NULL)
3185           {
3186             if( IfMagickTrue(GlobExpression(key,pattern,MagickTrue)) )
3187               {
3188                 value=GetImageProperty(image,key,exception);
3189                 if (value != (const char *) NULL)
3190                   {
3191                     length=strlen(key)+strlen(value)+2;
3192                     if ((size_t) (q-interpret_text+length+1) >= extent)
3193                       {
3194                         extent+=length;
3195                         interpret_text=(char *) ResizeQuantumMemory(
3196                           interpret_text,extent+MaxTextExtent,
3197                           sizeof(*interpret_text));
3198                         if (interpret_text == (char *) NULL)
3199                           return((char *)NULL);
3200                         q=interpret_text+strlen(interpret_text);
3201                       }
3202                     q+=FormatLocaleString(q,extent,"%s=%s\n",key,value);
3203                   }
3204               }
3205             key=GetNextImageProperty(image);
3206           }
3207           continue;
3208         }
3209       /*
3210         Look for a known property or image attribute
3211         Such as  %[basename]  %[denisty]  %[delay]
3212         Also does wrapped single letters:  %[b] %[G] %[g]
3213       */
3214       value=GetMagickProperty(image_info,image,pattern,exception);
3215       if (value != (const char *) NULL)
3216         {
3217           length=strlen(value);
3218           if ((size_t) (q-interpret_text+length+1) >= extent)
3219             {
3220               extent+=length;
3221               interpret_text=(char *) ResizeQuantumMemory(interpret_text,
3222                 extent+MaxTextExtent,sizeof(*interpret_text));
3223               if (interpret_text == (char *) NULL)
3224                 return((char *)NULL);
3225               q=interpret_text+strlen(interpret_text);
3226             }
3227           (void) CopyMagickString(q,value,extent);
3228           q+=length;
3229           continue;
3230         }
3231       /*
3232         Look for a per-image Artifact (user option, post-interpreted)
3233       */
3234       value=GetImageArtifact(image,pattern);
3235       if (value != (char *) NULL)
3236         {
3237           length=strlen(value);
3238           if ((size_t) (q-interpret_text+length+1) >= extent)
3239             {
3240               extent+=length;
3241               interpret_text=(char *) ResizeQuantumMemory(interpret_text,
3242                 extent+MaxTextExtent,sizeof(*interpret_text));
3243               if (interpret_text == (char *) NULL)
3244                 return((char *)NULL);
3245               q=interpret_text+strlen(interpret_text);
3246             }
3247           (void) CopyMagickString(q,value,extent);
3248           q+=length;
3249           continue;
3250         }
3251       /*
3252         Look for user option of this name (should never match in CLI usage)
3253       */
3254       if (image_info != (ImageInfo *) NULL) {
3255         value=GetImageOption(image_info,pattern);
3256         if (value != (char *) NULL)
3257           {
3258             length=strlen(value);
3259             if ((size_t) (q-interpret_text+length+1) >= extent)
3260               {
3261                 extent+=length;
3262                 interpret_text=(char *) ResizeQuantumMemory(interpret_text,
3263                   extent+MaxTextExtent,sizeof(*interpret_text));
3264                 if (interpret_text == (char *) NULL)
3265                   return((char *)NULL);
3266                 q=interpret_text+strlen(interpret_text);
3267               }
3268             (void) CopyMagickString(q,value,extent);
3269             q+=length;
3270             continue;
3271           }
3272         }
3273       /*
3274         Failed to find any match anywhere!
3275       */
3276       if (len >= 64) {  /* truncate string for error message */
3277         pattern[61] = '.';
3278         pattern[62] = '.';
3279         pattern[63] = '.';
3280         pattern[64] = '\0';
3281       }
3282       (void) ThrowMagickException(exception,GetMagickModule(),
3283           OptionWarning,"UnknownImageProperty","\"%%[%s]\"",pattern);
3284       /* continue */
3285     } /* Braced Percent Escape */
3286
3287   } /* for each char in 'embed_text' */
3288   *q='\0';
3289   return(interpret_text);
3290 }
3291 \f
3292 /*
3293 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3294 %                                                                             %
3295 %                                                                             %
3296 %                                                                             %
3297 %   R e m o v e I m a g e P r o p e r t y                                     %
3298 %                                                                             %
3299 %                                                                             %
3300 %                                                                             %
3301 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3302 %
3303 %  RemoveImageProperty() removes a property from the image and returns its
3304 %  value.
3305 %
3306 %  In this case the ConstantString() value returned should be freed by the
3307 %  caller when finished.
3308 %
3309 %  The format of the RemoveImageProperty method is:
3310 %
3311 %      char *RemoveImageProperty(Image *image,const char *property)
3312 %
3313 %  A description of each parameter follows:
3314 %
3315 %    o image: the image.
3316 %
3317 %    o property: the image property.
3318 %
3319 */
3320 MagickExport char *RemoveImageProperty(Image *image,
3321   const char *property)
3322 {
3323   char
3324     *value;
3325
3326   assert(image != (Image *) NULL);
3327   assert(image->signature == MagickSignature);
3328   if( IfMagickTrue(image->debug) )
3329     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
3330       image->filename);
3331   if (image->properties == (void *) NULL)
3332     return((char *) NULL);
3333   value=(char *) RemoveNodeFromSplayTree((SplayTreeInfo *) image->properties,
3334     property);
3335   return(value);
3336 }
3337 \f
3338 /*
3339 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3340 %                                                                             %
3341 %                                                                             %
3342 %                                                                             %
3343 %   R e s e t I m a g e P r o p e r t y I t e r a t o r                       %
3344 %                                                                             %
3345 %                                                                             %
3346 %                                                                             %
3347 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3348 %
3349 %  ResetImagePropertyIterator() resets the image properties iterator.  Use it
3350 %  in conjunction with GetNextImageProperty() to iterate over all the values
3351 %  associated with an image property.
3352 %
3353 %  The format of the ResetImagePropertyIterator method is:
3354 %
3355 %      ResetImagePropertyIterator(Image *image)
3356 %
3357 %  A description of each parameter follows:
3358 %
3359 %    o image: the image.
3360 %
3361 */
3362 MagickExport void ResetImagePropertyIterator(const Image *image)
3363 {
3364   assert(image != (Image *) NULL);
3365   assert(image->signature == MagickSignature);
3366   if( IfMagickTrue(image->debug) )
3367     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
3368       image->filename);
3369   if (image->properties == (void *) NULL)
3370     return;
3371   ResetSplayTreeIterator((SplayTreeInfo *) image->properties);
3372 }
3373 \f
3374 /*
3375 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3376 %                                                                             %
3377 %                                                                             %
3378 %                                                                             %
3379 %   S e t I m a g e P r o p e r t y                                           %
3380 %                                                                             %
3381 %                                                                             %
3382 %                                                                             %
3383 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3384 %
3385 %  SetImageProperty() saves the given string value either to specific known
3386 %  attribute or to a freeform property string.
3387 %
3388 %  Attempting to set a property that is normally calculated will produce
3389 %  an exception.
3390 %
3391 %  The format of the SetImageProperty method is:
3392 %
3393 %      MagickBooleanType SetImageProperty(Image *image,const char *property,
3394 %        const char *value,ExceptionInfo *exception)
3395 %
3396 %  A description of each parameter follows:
3397 %
3398 %    o image: the image.
3399 %
3400 %    o property: the image property.
3401 %
3402 %    o values: the image property values.
3403 %
3404 %    o exception: return any errors or warnings in this structure.
3405 %
3406 */
3407 MagickExport MagickBooleanType SetImageProperty(Image *image,
3408   const char *property,const char *value,ExceptionInfo *exception)
3409 {
3410   MagickBooleanType
3411     status;
3412
3413   MagickStatusType
3414     flags;
3415
3416   assert(image != (Image *) NULL);
3417   assert(image->signature == MagickSignature);
3418   if( IfMagickTrue(image->debug) )
3419     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
3420
3421   /* Create splay-tree */
3422   if (image->properties == (void *) NULL)
3423     image->properties=NewSplayTree(CompareSplayTreeString,
3424       RelinquishMagickMemory,RelinquishMagickMemory);
3425
3426   /* Delete property if NULL --  empty string values are valid! */
3427   if ((value == (const char *) NULL))
3428     return(DeleteImageProperty(image,property));
3429   status=MagickTrue;
3430
3431   /* Do not 'set' single letter properties - read only shorthand */
3432   if (strlen(property) <= 1)
3433     {
3434       (void) ThrowMagickException(exception,GetMagickModule(),
3435           OptionError,"SetReadOnlyProperty","'%s'",property);
3436       return(MagickFalse);
3437     }
3438
3439   /* FUTURE: These should produce a 'illegal settings' error
3440      + binary chars in property key
3441      + single letter property keys (read only)
3442      + known special prefixes (read only, they don't get saved!)
3443   */
3444
3445   switch (*property)
3446   {
3447     case 'B':
3448     case 'b':
3449     {
3450       if (LocaleCompare("background",property) == 0)
3451         {
3452           (void) QueryColorCompliance(value,AllCompliance,
3453             &image->background_color,exception);
3454           break;
3455         }
3456       status=AddValueToSplayTree((SplayTreeInfo *) image->properties,
3457         ConstantString(property),ConstantString(value));
3458       /* FUTURE: error if status is bad? */
3459       break;
3460     }
3461     case 'C':
3462     case 'c':
3463     {
3464       if (LocaleCompare("channels",property) == 0)
3465         {
3466           (void) ThrowMagickException(exception,GetMagickModule(),
3467                OptionError,"SetReadOnlyProperty","'%s'",property);
3468           status=MagickFalse;
3469           break;
3470         }
3471       if (LocaleCompare("colorspace",property) == 0)
3472         {
3473           ssize_t
3474             colorspace;
3475
3476           colorspace=ParseCommandOption(MagickColorspaceOptions,MagickFalse,
3477             value);
3478           if (colorspace < 0)
3479             break;
3480           image->colorspace=(ColorspaceType) colorspace;
3481           image->rendering_intent=UndefinedIntent;
3482           image->gamma=1.000f;
3483           ResetMagickMemory(&image->chromaticity,0,sizeof(image->chromaticity));
3484           if (IssRGBColorspace(image->colorspace) != MagickFalse)
3485             {
3486               image->rendering_intent=PerceptualIntent;
3487               image->gamma=1.000f/2.200f;
3488               image->chromaticity.red_primary.x=0.6400f;
3489               image->chromaticity.red_primary.y=0.3300f;
3490               image->chromaticity.red_primary.z=0.0300f;
3491               image->chromaticity.green_primary.x=0.3000f;
3492               image->chromaticity.green_primary.y=0.6000f;
3493               image->chromaticity.green_primary.z=0.1000f;
3494               image->chromaticity.blue_primary.x=0.1500f;
3495               image->chromaticity.blue_primary.y=0.0600f;
3496               image->chromaticity.blue_primary.z=0.7900f;
3497               image->chromaticity.white_point.x=0.3127f;
3498               image->chromaticity.white_point.y=0.3290f;
3499               image->chromaticity.white_point.z=0.3583f;
3500             }
3501           break;
3502         }
3503       if (LocaleCompare("compose",property) == 0)
3504         {
3505           ssize_t
3506             compose;
3507
3508           compose=ParseCommandOption(MagickComposeOptions,MagickFalse,value);
3509           if (compose < 0)
3510             break;
3511           image->compose=(CompositeOperator) compose;
3512           break;
3513         }
3514       if (LocaleCompare("compress",property) == 0)
3515         {
3516           ssize_t
3517             compression;
3518
3519           compression=ParseCommandOption(MagickCompressOptions,MagickFalse,
3520             value);
3521           if (compression < 0)
3522             break;
3523           image->compression=(CompressionType) compression;
3524           break;
3525         }
3526       if (LocaleCompare("copyright",property) == 0)
3527         {
3528           (void) ThrowMagickException(exception,GetMagickModule(),
3529                OptionError,"SetReadOnlyProperty","'%s'",property);
3530           status=MagickFalse;
3531           break;
3532         }
3533       status=AddValueToSplayTree((SplayTreeInfo *) image->properties,
3534         ConstantString(property),ConstantString(value));
3535       break;
3536     }
3537     case 'D':
3538     case 'd':
3539     {
3540       if (LocaleCompare("delay",property) == 0)
3541         {
3542           GeometryInfo
3543             geometry_info;
3544
3545           flags=ParseGeometry(value,&geometry_info);
3546           if ((flags & GreaterValue) != 0)
3547             {
3548               if (image->delay > (size_t) floor(geometry_info.rho+0.5))
3549                 image->delay=(size_t) floor(geometry_info.rho+0.5);
3550             }
3551           else
3552             if ((flags & LessValue) != 0)
3553               {
3554                 if (image->delay < (size_t) floor(geometry_info.rho+0.5))
3555                   image->ticks_per_second=(ssize_t)
3556                     floor(geometry_info.sigma+0.5);
3557               }
3558             else
3559               image->delay=(size_t) floor(geometry_info.rho+0.5);
3560           if ((flags & SigmaValue) != 0)
3561             image->ticks_per_second=(ssize_t) floor(geometry_info.sigma+0.5);
3562           break;
3563         }
3564       if (LocaleCompare("density",property) == 0)
3565         {
3566           GeometryInfo
3567             geometry_info;
3568
3569           flags=ParseGeometry(value,&geometry_info);
3570           image->resolution.x=geometry_info.rho;
3571           image->resolution.y=geometry_info.sigma;
3572           if ((flags & SigmaValue) == 0)
3573             image->resolution.y=image->resolution.x;
3574         }
3575       if (LocaleCompare("depth",property) == 0)
3576         {
3577           image->depth=StringToUnsignedLong(value);
3578           break;
3579         }
3580       if (LocaleCompare("dispose",property) == 0)
3581         {
3582           ssize_t
3583             dispose;
3584
3585           dispose=ParseCommandOption(MagickDisposeOptions,MagickFalse,value);
3586           if (dispose < 0)
3587             break;
3588           image->dispose=(DisposeType) dispose;
3589           break;
3590         }
3591       status=AddValueToSplayTree((SplayTreeInfo *) image->properties,
3592         ConstantString(property),ConstantString(value));
3593       break;
3594     }
3595     case 'G':
3596     case 'g':
3597     {
3598       if (LocaleCompare("gamma",property) == 0)
3599         {
3600           image->gamma=StringToDouble(value,(char **) NULL);
3601           break;
3602         }
3603       if (LocaleCompare("gravity",property) == 0)
3604         {
3605           ssize_t
3606             gravity;
3607
3608           gravity=ParseCommandOption(MagickGravityOptions,MagickFalse,value);
3609           if (gravity < 0)
3610             break;
3611           image->gravity=(GravityType) gravity;
3612           break;
3613         }
3614       status=AddValueToSplayTree((SplayTreeInfo *) image->properties,
3615         ConstantString(property),ConstantString(value));
3616       break;
3617     }
3618     case 'H':
3619     case 'h':
3620       if (LocaleCompare("height",property) == 0)
3621         {
3622           (void) ThrowMagickException(exception,GetMagickModule(),
3623                OptionError,"SetReadOnlyProperty","'%s'",property);
3624           status=MagickFalse;
3625           break;
3626         }
3627     case 'I':
3628     case 'i':
3629     {
3630       if (LocaleCompare("intent",property) == 0)
3631         {
3632           ssize_t
3633             rendering_intent;
3634
3635           rendering_intent=ParseCommandOption(MagickIntentOptions,MagickFalse,
3636             value);
3637           if (rendering_intent < 0)
3638             break;
3639           image->rendering_intent=(RenderingIntent) rendering_intent;
3640           break;
3641         }
3642       if (LocaleCompare("interpolate",property) == 0)
3643         {
3644           ssize_t
3645             interpolate;
3646
3647           interpolate=ParseCommandOption(MagickInterpolateOptions,MagickFalse,
3648             value);
3649           if (interpolate < 0)
3650             break;
3651           image->interpolate=(PixelInterpolateMethod) interpolate;
3652           break;
3653         }
3654       status=AddValueToSplayTree((SplayTreeInfo *) image->properties,
3655         ConstantString(property),ConstantString(value));
3656       break;
3657     }
3658     case 'K':
3659     case 'k':
3660       if (LocaleCompare("kurtosis",property) == 0)
3661         {
3662           (void) ThrowMagickException(exception,GetMagickModule(),
3663                OptionError,"SetReadOnlyProperty","'%s'",property);
3664           status=MagickFalse;
3665           break;
3666         }
3667     case 'L':
3668     case 'l':
3669     {
3670       if (LocaleCompare("loop",property) == 0)
3671         {
3672           image->iterations=StringToUnsignedLong(value);
3673           break;
3674         }
3675       status=AddValueToSplayTree((SplayTreeInfo *) image->properties,
3676         ConstantString(property),ConstantString(value));
3677       break;
3678     }
3679     case 'M':
3680     case 'm':
3681       if ( (LocaleCompare("magick",property) == 0) ||
3682            (LocaleCompare("max",property) == 0) ||
3683            (LocaleCompare("mean",property) == 0) ||
3684            (LocaleCompare("min",property) == 0) ||
3685            (LocaleCompare("min",property) == 0) )
3686         {
3687           (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
3688              "SetReadOnlyProperty","'%s'",property);
3689           status=MagickFalse;
3690           break;
3691         }
3692     case 'O':
3693     case 'o':
3694       if (LocaleCompare("opaque",property) == 0)
3695         {
3696           (void) ThrowMagickException(exception,GetMagickModule(),
3697                OptionError,"SetReadOnlyProperty","'%s'",property);
3698           status=MagickFalse;
3699           break;
3700         }
3701     case 'P':
3702     case 'p':
3703     {
3704       if (LocaleCompare("page",property) == 0)
3705         {
3706           char
3707             *geometry;
3708
3709           geometry=GetPageGeometry(value);
3710           flags=ParseAbsoluteGeometry(geometry,&image->page);
3711           geometry=DestroyString(geometry);
3712           break;
3713         }
3714       if (LocaleCompare("profile",property) == 0)
3715         {
3716           ImageInfo
3717             *image_info;
3718
3719           StringInfo
3720             *profile;
3721
3722           image_info=AcquireImageInfo();
3723           (void) CopyMagickString(image_info->filename,value,MaxTextExtent);
3724           (void) SetImageInfo(image_info,1,exception);
3725           profile=FileToStringInfo(image_info->filename,~0UL,exception);
3726           if (profile != (StringInfo *) NULL)
3727             status=SetImageProfile(image,image_info->magick,profile,exception);
3728           image_info=DestroyImageInfo(image_info);
3729           break;
3730         }
3731       status=AddValueToSplayTree((SplayTreeInfo *) image->properties,
3732         ConstantString(property),ConstantString(value));
3733       break;
3734     }
3735     case 'R':
3736     case 'r':
3737     {
3738       if (LocaleCompare("rendering-intent",property) == 0)
3739         {
3740           ssize_t
3741             rendering_intent;
3742
3743           rendering_intent=ParseCommandOption(MagickIntentOptions,MagickFalse,
3744             value);
3745           if (rendering_intent < 0)
3746             status=MagickFalse;
3747           else
3748             image->rendering_intent=(RenderingIntent) rendering_intent;
3749           break;
3750         }
3751       status=AddValueToSplayTree((SplayTreeInfo *) image->properties,
3752         ConstantString(property),ConstantString(value));
3753       break;
3754     }
3755     case 'S':
3756     case 's':
3757       if ( (LocaleCompare("size",property) == 0) ||
3758            (LocaleCompare("skewness",property) == 0) ||
3759            (LocaleCompare("scenes",property) == 0) ||
3760            (LocaleCompare("standard-deviation",property) == 0) )
3761         {
3762           (void) ThrowMagickException(exception,GetMagickModule(),
3763                OptionError,"SetReadOnlyProperty","'%s'",property);
3764           status=MagickFalse;
3765           break;
3766         }
3767     case 'T':
3768     case 't':
3769     {
3770       if (LocaleCompare("tile-offset",property) == 0)
3771         {
3772           char
3773             *geometry;
3774
3775           geometry=GetPageGeometry(value);
3776           flags=ParseAbsoluteGeometry(geometry,&image->tile_offset);
3777           geometry=DestroyString(geometry);
3778           break;
3779         }
3780       status=AddValueToSplayTree((SplayTreeInfo *) image->properties,
3781         ConstantString(property),ConstantString(value));
3782       break;
3783     }
3784     case 'U':
3785     case 'u':
3786     {
3787       if (LocaleCompare("units",property) == 0)
3788         {
3789           ssize_t
3790             units;
3791
3792           units=ParseCommandOption(MagickResolutionOptions,MagickFalse,value);
3793           if (units < 0)
3794             break;
3795           image->units=(ResolutionType) units;
3796           break;
3797         }
3798       status=AddValueToSplayTree((SplayTreeInfo *) image->properties,
3799         ConstantString(property),ConstantString(value));
3800       break;
3801     }
3802     case 'V':
3803     case 'v':
3804       if (LocaleCompare("version",property) == 0)
3805         {
3806           (void) ThrowMagickException(exception,GetMagickModule(),
3807                OptionError,"SetReadOnlyProperty","'%s'",property);
3808           status=MagickFalse;
3809           break;
3810         }
3811     case 'W':
3812     case 'w':
3813       if (LocaleCompare("width",property) == 0)
3814         {
3815           (void) ThrowMagickException(exception,GetMagickModule(),
3816                OptionError,"SetReadOnlyProperty","'%s'",property);
3817           status=MagickFalse;
3818           break;
3819         }
3820     default:
3821     {
3822       status=AddValueToSplayTree((SplayTreeInfo *) image->properties,
3823         ConstantString(property),ConstantString(value));
3824       break;
3825     }
3826   }
3827   return(status);
3828 }