Commit message: fix #5033: runtime error: load of misaligned address (#5034)

* fix Division by zero in XMenuWidget() of MagickCore/widget.c

* Fix memory leak in AnimateImageCommand() of MagickWand/animate.c and DisplayImageCommand() of MagickWand/display.c

* fix Division by zero in ReadEnhMetaFile() of coders/emf.c

* Resolve conflicts

* fix issue: outside the range of representable values of type 'unsigned char' at coders/psd.c:1025

* fix error: 4e+26 is outside the range of representable values of type 'unsigned long' at coders/pcl.c:299

* fix #5033:runtime error: load of misaligned address

Co-authored-by: zhailiangliang <zhailiangliang@loongson.cn>
CVE: CVE-2022-32547
CWE: CWE-703
Vulnerability description: In ImageMagick, there is load of misaligned address for type 'double', which requires 8 byte alignment and for type 'float', which requires 4 byte alignment at MagickCore/property.c. Whenever crafted or untrusted input is processed by ImageMagick, this causes a negative impact to application availability or other problems related to undefined behavior.

Project: ImageMagick
File: property.c

MagickExport const char *GetMagickProperty(ImageInfo *image_info,
  Image *image,const char *property,ExceptionInfo *exception)
{
  char
    value[MagickPathExtent];

  const char
    *string;

  assert(property[0] != '\0');
  assert(image != (Image *) NULL || image_info != (ImageInfo *) NULL );
  if (property[1] == '\0')  /* single letter property request */
    return(GetMagickPropertyLetter(image_info,image,*property,exception));
  if ((image != (Image *) NULL) && (image->debug != MagickFalse))
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  else
    if ((image_info != (ImageInfo *) NULL) &&
        (image_info->debug != MagickFalse))
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s","no-images");
  *value='\0';           /* formated string */
  string=(char *) NULL;  /* constant string reference */
  switch (*property)
  {
    case 'b':
    {
      if (LocaleCompare("basename",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          GetPathComponent(image->magick_filename,BasePath,value);
          if (*value == '\0')
            string="";
          break;
        }
      if (LocaleCompare("bit-depth",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
            GetImageDepth(image,exception));
          break;
        }
      if (LocaleCompare("bounding-box",property) == 0)
        {
          RectangleInfo
            geometry;

          WarnNoImageReturn("\"%%[%s]\"",property);
          geometry=GetImageBoundingBox(image,exception);
          (void) FormatLocaleString(value,MagickPathExtent,"%g,%g %g,%g",
            (double) geometry.x,(double) geometry.y,
            (double) geometry.x+geometry.width,
            (double) geometry.y+geometry.height);
          break;
        }
      break;
    }
    case 'c':
    {
      if (LocaleCompare("channels",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          /* FUTURE: return actual image channels */
          (void) FormatLocaleString(value,MagickPathExtent,"%s",
            CommandOptionToMnemonic(MagickColorspaceOptions,(ssize_t)
            image->colorspace));
          LocaleLower(value);
          if( image->alpha_trait != UndefinedPixelTrait )
            (void) ConcatenateMagickString(value,"a",MagickPathExtent);
          break;
        }
      if (LocaleCompare("colors",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          image->colors=GetNumberColors(image,(FILE *) NULL,exception);
          (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
            image->colors);
          break;
        }
      if (LocaleCompare("colorspace",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          string=CommandOptionToMnemonic(MagickColorspaceOptions,(ssize_t)
            image->colorspace);
          break;
        }
      if (LocaleCompare("compose",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          string=CommandOptionToMnemonic(MagickComposeOptions,(ssize_t)
            image->compose);
          break;
        }
      if (LocaleCompare("compression",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          string=CommandOptionToMnemonic(MagickCompressOptions,(ssize_t)
            image->compression);
          break;
        }
      if (LocaleCompare("convex-hull",property) == 0)
        {
          char
            *points;

          PointInfo
            *convex_hull;

          ssize_t
            n;

          size_t
            number_points;

          WarnNoImageReturn("\"%%[%s]\"",property);
          convex_hull=GetImageConvexHull(image,&number_points,exception);
          if (convex_hull == (PointInfo *) NULL)
            break;
          points=AcquireString("");
          for (n=0; n < (ssize_t) number_points; n++)
          {
            (void) FormatLocaleString(value,MagickPathExtent,"%g,%g ",
              convex_hull[n].x,convex_hull[n].y);
            (void) ConcatenateString(&points,value);
          }
          convex_hull=(PointInfo *) RelinquishMagickMemory(convex_hull);
          (void) SetImageProperty(image,"convex-hull",points,exception);
          points=DestroyString(points);
          string=GetImageProperty(image,"convex-hull",exception);
          break;
        }
      if (LocaleCompare("convex-hull:extreme-points",property) == 0)
        {
          char
            *points;

          PointInfo
            extreme,
            *convex_hull;

          ssize_t
            n;

          size_t
            number_points;

          WarnNoImageReturn("\"%%[%s]\"",property);
          convex_hull=GetImageConvexHull(image,&number_points,exception);
          if (convex_hull == (PointInfo *) NULL)
            break;
          points=AcquireString("");
          extreme=convex_hull[0];  /* top */
          for (n=0; n < (ssize_t) number_points; n++)
          {
            if (convex_hull[n].y < extreme.y)
              {
                extreme=convex_hull[n];
                continue;
              }
            if (convex_hull[n].y != extreme.y)
              continue;
            if (convex_hull[n].x < extreme.x)
              extreme=convex_hull[n];
          }
          (void) FormatLocaleString(value,MagickPathExtent,"%g,%g ",
            extreme.x,extreme.y);
          (void) ConcatenateString(&points,value);
          extreme=convex_hull[0]; /* right */
          for (n=0; n < (ssize_t) number_points; n++)
          {
            if (convex_hull[n].x > extreme.x)
              {
                extreme=convex_hull[n];
                continue;
              }
            if (convex_hull[n].x != extreme.x)
              continue;
            if (convex_hull[n].y < extreme.y)
              extreme=convex_hull[n];
          }
          (void) FormatLocaleString(value,MagickPathExtent,"%g,%g ",
            extreme.x,extreme.y);
          (void) ConcatenateString(&points,value);
          extreme=convex_hull[0];  /* bottom */
          for (n=0; n < (ssize_t) number_points; n++)
          {
            if (convex_hull[n].y > extreme.y)
              {
                extreme=convex_hull[n];
                continue;
              }
            if (convex_hull[n].y != extreme.y)
              continue;
            if (convex_hull[n].x > extreme.x)
              extreme=convex_hull[n];
          }
          (void) FormatLocaleString(value,MagickPathExtent,"%g,%g ",
            extreme.x,extreme.y);
          (void) ConcatenateString(&points,value);
          extreme=convex_hull[0];  /* left */
          for (n=0; n < (ssize_t) number_points; n++)
          {
            if (convex_hull[n].x < extreme.x)
              {
                extreme=convex_hull[n];
                continue;
              }
            if (convex_hull[n].x != extreme.x)
              continue;
            if (convex_hull[n].y > extreme.y)
              extreme=convex_hull[n];
          }
          (void) FormatLocaleString(value,MagickPathExtent,"%g,%g ",
            extreme.x,extreme.y);
          (void) ConcatenateString(&points,value);
          convex_hull=(PointInfo *) RelinquishMagickMemory(convex_hull);
          (void) SetImageProperty(image,"convex-hull:extreme-points",points,
            exception);
          points=DestroyString(points);
          string=GetImageProperty(image,"convex-hull:extreme-points",exception);
          break;
        }
      if (LocaleCompare("copyright",property) == 0)
        {
          (void) CopyMagickString(value,GetMagickCopyright(),MagickPathExtent);
          break;
        }
      break;
    }
    case 'd':
    {
      if (LocaleCompare("depth",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
            image->depth);
          break;
        }
      if (LocaleCompare("directory",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          GetPathComponent(image->magick_filename,HeadPath,value);
          if (*value == '\0')
            string="";
          break;
        }
      break;
    }
    case 'e':
    {
      if (LocaleCompare("entropy",property) == 0)
        {
          double
            entropy;

          WarnNoImageReturn("\"%%[%s]\"",property);
          (void) GetImageEntropy(image,&entropy,exception);
          (void) FormatLocaleString(value,MagickPathExtent,"%.*g",
            GetMagickPrecision(),entropy);
          break;
        }
      if (LocaleCompare("extension",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          GetPathComponent(image->magick_filename,ExtensionPath,value);
          if (*value == '\0')
            string="";
          break;
        }
      break;
    }
    case 'g':
    {
      if (LocaleCompare("gamma",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          (void) FormatLocaleString(value,MagickPathExtent,"%.*g",
            GetMagickPrecision(),image->gamma);
          break;
        }
      break;
    }
    case 'h':
    {
      if (LocaleCompare("height",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          (void) FormatLocaleString(value,MagickPathExtent,"%.20g",
            image->magick_rows != 0 ? (double) image->magick_rows : 256.0);
          break;
        }
      break;
    }
    case 'i':
    {
      if (LocaleCompare("input",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          string=image->filename;
          break;
        }
      if (LocaleCompare("interlace",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          string=CommandOptionToMnemonic(MagickInterlaceOptions,(ssize_t)
            image->interlace);
          break;
        }
      break;
    }
    case 'k':
    {
      if (LocaleCompare("kurtosis",property) == 0)
        {
          double
            kurtosis,
            skewness;

          WarnNoImageReturn("\"%%[%s]\"",property);
          (void) GetImageKurtosis(image,&kurtosis,&skewness,exception);
          (void) FormatLocaleString(value,MagickPathExtent,"%.*g",
            GetMagickPrecision(),kurtosis);
          break;
        }
      break;
    }
    case 'm':
    {
      if (LocaleCompare("magick",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          string=image->magick;
          break;
        }
      if ((LocaleCompare("maxima",property) == 0) ||
          (LocaleCompare("max",property) == 0))
        {
          double
            maximum,
            minimum;

          WarnNoImageReturn("\"%%[%s]\"",property);
          (void) GetImageRange(image,&minimum,&maximum,exception);
          (void) FormatLocaleString(value,MagickPathExtent,"%.*g",
            GetMagickPrecision(),maximum);
          break;
        }
      if (LocaleCompare("mean",property) == 0)
        {
          double
            mean,
            standard_deviation;

          WarnNoImageReturn("\"%%[%s]\"",property);
          (void) GetImageMean(image,&mean,&standard_deviation,exception);
          (void) FormatLocaleString(value,MagickPathExtent,"%.*g",
            GetMagickPrecision(),mean);
          break;
        }
      if (LocaleCompare("median",property) == 0)
        {
          double
            median;

          WarnNoImageReturn("\"%%[%s]\"",property);
          (void) GetImageMedian(image,&median,exception);
          (void) FormatLocaleString(value,MagickPathExtent,"%.*g",
            GetMagickPrecision(),median);
          break;
        }
      if ((LocaleCompare("minima",property) == 0) ||
          (LocaleCompare("min",property) == 0))
        {
          double
            maximum,
            minimum;

          WarnNoImageReturn("\"%%[%s]\"",property);
          (void) GetImageRange(image,&minimum,&maximum,exception);
          (void) FormatLocaleString(value,MagickPathExtent,"%.*g",
            GetMagickPrecision(),minimum);
          break;
        }
      if (LocaleNCompare("minimum-bounding-box",property,20) == 0)
        {
          char
            *points;

          PointInfo
            *bounding_box;

          ssize_t
            n;

          size_t
            number_points;

          WarnNoImageReturn("\"%%[%s]\"",property);
          bounding_box=GetImageMinimumBoundingBox(image,&number_points,
            exception);
          if (bounding_box == (PointInfo *) NULL)
            break;
          points=AcquireString("");
          for (n=0; n < (ssize_t) number_points; n++)
          {
            (void) FormatLocaleString(value,MagickPathExtent,"%g,%g ",
              bounding_box[n].x,bounding_box[n].y);
            (void) ConcatenateString(&points,value);
          }
          bounding_box=(PointInfo *) RelinquishMagickMemory(bounding_box);
          (void) SetImageProperty(image,"minimum-bounding-box",points,
            exception);
          points=DestroyString(points);
          string=GetImageProperty(image,property,exception);
          break;
        }
      break;
    }
    case 'o':
    {
      if (LocaleCompare("opaque",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          string=CommandOptionToMnemonic(MagickBooleanOptions,(ssize_t)
            IsImageOpaque(image,exception));
          break;
        }
      if (LocaleCompare("orientation",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          string=CommandOptionToMnemonic(MagickOrientationOptions,(ssize_t)
            image->orientation);
          break;
        }
      if (LocaleCompare("output",property) == 0)
        {
          WarnNoImageInfoReturn("\"%%[%s]\"",property);
          (void) CopyMagickString(value,image_info->filename,MagickPathExtent);
          break;
        }
      break;
    }
    case 'p':
    {
      if (LocaleCompare("page",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          (void) FormatLocaleString(value,MagickPathExtent,"%.20gx%.20g",
            (double) image->page.width,(double) image->page.height);
          break;
        }
      if (LocaleNCompare("papersize:",property,10) == 0)
        {
          char
            *papersize;

          WarnNoImageReturn("\"%%[%s]\"",property);
          *value='\0';
          papersize=GetPageGeometry(property+10);
          if (papersize != (const char *) NULL)
            {
              RectangleInfo
                page = { 0, 0, 0, 0 };

              (void) ParseAbsoluteGeometry(papersize,&page);
              (void) FormatLocaleString(value,MagickPathExtent,"%.20gx%.20g",
                (double) page.width,(double) page.height);
              papersize=DestroyString(papersize);
            }
          break;
        }
#if defined(MAGICKCORE_LCMS_DELEGATE)
      if (LocaleCompare("profile:icc",property) == 0 ||
          LocaleCompare("profile:icm",property) == 0)
        {
#if !defined(LCMS_VERSION) || (LCMS_VERSION < 2000)
#define cmsUInt32Number  DWORD
#endif

          const StringInfo
            *profile;

          cmsHPROFILE
            icc_profile;

          WarnNoImageReturn("\"%%[%s]\"",property);
          profile=GetImageProfile(image,property+8);
          if (profile == (StringInfo *) NULL)
            break;
          icc_profile=cmsOpenProfileFromMem(GetStringInfoDatum(profile),
            (cmsUInt32Number) GetStringInfoLength(profile));
          if (icc_profile != (cmsHPROFILE *) NULL)
            {
#if defined(LCMS_VERSION) && (LCMS_VERSION < 2000)
              string=cmsTakeProductName(icc_profile);
#else
              (void) cmsGetProfileInfoASCII(icc_profile,cmsInfoDescription,
                "en","US",value,MagickPathExtent);
#endif
              (void) cmsCloseProfile(icc_profile);
            }
      }
#endif
      if (LocaleCompare("printsize.x",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          (void) FormatLocaleString(value,MagickPathExtent,"%.*g",
            GetMagickPrecision(),PerceptibleReciprocal(image->resolution.x)*
              image->columns);
          break;
        }
      if (LocaleCompare("printsize.y",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          (void) FormatLocaleString(value,MagickPathExtent,"%.*g",
            GetMagickPrecision(),PerceptibleReciprocal(image->resolution.y)*
              image->rows);
          break;
        }
      if (LocaleCompare("profiles",property) == 0)
        {
          const char
            *name;

          WarnNoImageReturn("\"%%[%s]\"",property);
          ResetImageProfileIterator(image);
          name=GetNextImageProfile(image);
          if (name != (char *) NULL)
            {
              (void) CopyMagickString(value,name,MagickPathExtent);
              name=GetNextImageProfile(image);
              while (name != (char *) NULL)
              {
                ConcatenateMagickString(value,",",MagickPathExtent);
                ConcatenateMagickString(value,name,MagickPathExtent);
                name=GetNextImageProfile(image);
              }
            }
          break;
        }
      break;
    }
    case 'q':
    {
      if (LocaleCompare("quality",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
            image->quality);
          break;
        }
      break;
    }
    case 'r':
    {
      if (LocaleCompare("resolution.x",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          (void) FormatLocaleString(value,MagickPathExtent,"%g",
            image->resolution.x);
          break;
        }
      if (LocaleCompare("resolution.y",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          (void) FormatLocaleString(value,MagickPathExtent,"%g",
            image->resolution.y);
          break;
        }
      break;
    }
    case 's':
    {
      if (LocaleCompare("scene",property) == 0)
        {
          WarnNoImageInfoReturn("\"%%[%s]\"",property);
          if (image_info->number_scenes != 0)
            (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
              image_info->scene);
          else {
            WarnNoImageReturn("\"%%[%s]\"",property);
            (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
              image->scene);
          }
          break;
        }
      if (LocaleCompare("scenes",property) == 0)
        {
          /* FUTURE: equivelent to %n? */
          WarnNoImageReturn("\"%%[%s]\"",property);
          (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
            GetImageListLength(image));
          break;
        }
      if (LocaleCompare("size",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          (void) FormatMagickSize(GetBlobSize(image),MagickFalse,"B",
            MagickPathExtent,value);
          break;
        }
      if (LocaleCompare("skewness",property) == 0)
        {
          double
            kurtosis,
            skewness;

          WarnNoImageReturn("\"%%[%s]\"",property);
          (void) GetImageKurtosis(image,&kurtosis,&skewness,exception);
          (void) FormatLocaleString(value,MagickPathExtent,"%.*g",
            GetMagickPrecision(),skewness);
          break;
        }
      if (LocaleCompare("standard-deviation",property) == 0)
        {
          double
            mean,
            standard_deviation;

          WarnNoImageReturn("\"%%[%s]\"",property);
          (void) GetImageMean(image,&mean,&standard_deviation,exception);
          (void) FormatLocaleString(value,MagickPathExtent,"%.*g",
            GetMagickPrecision(),standard_deviation);
          break;
        }
      break;
    }
    case 't':
    {
      if (LocaleCompare("type",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          string=CommandOptionToMnemonic(MagickTypeOptions,(ssize_t)
            IdentifyImageType(image,exception));
          break;
        }
       break;
    }
    case 'u':
    {
      if (LocaleCompare("unique",property) == 0)
        {
          WarnNoImageInfoReturn("\"%%[%s]\"",property);
          string=image_info->unique;
          break;
        }
      if (LocaleCompare("units",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          string=CommandOptionToMnemonic(MagickResolutionOptions,(ssize_t)
            image->units);
          break;
        }
      break;
    }
    case 'v':
    {
      if (LocaleCompare("version",property) == 0)
        {
          string=GetMagickVersion((size_t *) NULL);
          break;
        }
      break;
    }
    case 'w':
    {
      if (LocaleCompare("width",property) == 0)
        {
          WarnNoImageReturn("\"%%[%s]\"",property);
          (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
            (image->magick_columns != 0 ? image->magick_columns : 256));
          break;
        }
      break;
    }
  }
  if (string != (char *) NULL)
    return(string);
  if (*value != '\0')
    {
      /*
        Create a cloned copy of result, that will get cleaned up, eventually.
      */
      if (image != (Image *) NULL)
        {
          (void) SetImageArtifact(image,"magick-property",value);
          return(GetImageArtifact(image,"magick-property"));
        }
      else
        {
          (void) SetImageOption(image_info,"magick-property",value);
          return(GetImageOption(image_info,"magick-property"));
        }
    }
  return((char *) NULL);
}

Project: ImageMagick
File: property.c

MagickExport MagickBooleanType SetImageProperty(Image *image,
  const char *property,const char *value,ExceptionInfo *exception)
{
  MagickBooleanType
    status;

  MagickStatusType
    flags;

  size_t
    property_length;

  assert(image != (Image *) NULL);
  assert(image->signature == MagickCoreSignature);
  if (image->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  if (image->properties == (void *) NULL)
    image->properties=NewSplayTree(CompareSplayTreeString,
      RelinquishMagickMemory,RelinquishMagickMemory);  /* create splay-tree */
  if (value == (const char *) NULL)
    return(DeleteImageProperty(image,property));  /* delete if NULL */
  if (strlen(property) <= 1)
    {
      /*
        Do not 'set' single letter properties - read only shorthand.
      */
      (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
        "SetReadOnlyProperty","`%s'",property);
      return(MagickFalse);
    }
  property_length=strlen(property);
  if ((property_length > 2) && (*(property+(property_length-2)) == ':') &&
      (*(property+(property_length-1)) == '*'))
    {
      (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
        "SetReadOnlyProperty","`%s'",property);
      return(MagickFalse);
    }
  /*
    FUTURE: binary chars or quotes in key should produce a error
    Set attributes with known names or special prefixes
    return result is found, or break to set a free form property
  */
  status=MagickTrue;
  switch (*property)
  {
#if 0  /* Percent escape's sets values with this prefix: for later use
          Throwing an exception causes this setting to fail */
    case '8':
    {
      if (LocaleNCompare("8bim:",property,5) == 0)
        {
          (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
            "SetReadOnlyProperty","`%s'",property);
          return(MagickFalse);
        }
      break;
    }
#endif
    case 'B':
    case 'b':
    {
      if (LocaleCompare("background",property) == 0)
        {
          (void) QueryColorCompliance(value,AllCompliance,
            &image->background_color,exception);
          /* check for FUTURE: value exception?? */
          /* also add user input to splay tree */
        }
      break; /* not an attribute, add as a property */
    }
    case 'C':
    case 'c':
    {
      if (LocaleCompare("channels",property) == 0)
        {
          (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
            "SetReadOnlyProperty","`%s'",property);
          return(MagickFalse);
        }
      if (LocaleCompare("colorspace",property) == 0)
        {
          ssize_t
            colorspace;

          colorspace=ParseCommandOption(MagickColorspaceOptions,MagickFalse,
            value);
          if (colorspace < 0)
            return(MagickFalse); /* FUTURE: value exception?? */
          return(SetImageColorspace(image,(ColorspaceType) colorspace,exception));
        }
      if (LocaleCompare("compose",property) == 0)
        {
          ssize_t
            compose;

          compose=ParseCommandOption(MagickComposeOptions,MagickFalse,value);
          if (compose < 0)
            return(MagickFalse); /* FUTURE: value exception?? */
          image->compose=(CompositeOperator) compose;
          return(MagickTrue);
        }
      if (LocaleCompare("compress",property) == 0)
        {
          ssize_t
            compression;

          compression=ParseCommandOption(MagickCompressOptions,MagickFalse,
            value);
          if (compression < 0)
            return(MagickFalse); /* FUTURE: value exception?? */
          image->compression=(CompressionType) compression;
          return(MagickTrue);
        }
      break; /* not an attribute, add as a property */
    }
    case 'D':
    case 'd':
    {
      if (LocaleCompare("delay",property) == 0)
        {
          GeometryInfo
            geometry_info;

          flags=ParseGeometry(value,&geometry_info);
          if ((flags & GreaterValue) != 0)
            {
              if (image->delay > (size_t) floor(geometry_info.rho+0.5))
                image->delay=(size_t) floor(geometry_info.rho+0.5);
            }
          else
            if ((flags & LessValue) != 0)
              {
                if ((double) image->delay < floor(geometry_info.rho+0.5))
                  image->delay=CastDoubleToLong(
                    floor(geometry_info.sigma+0.5));
              }
            else
              image->delay=(size_t) floor(geometry_info.rho+0.5);
          if ((flags & SigmaValue) != 0)
            image->ticks_per_second=CastDoubleToLong(floor(
              geometry_info.sigma+0.5));
          return(MagickTrue);
        }
      if (LocaleCompare("delay_units",property) == 0)
        {
          (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
            "SetReadOnlyProperty","`%s'",property);
          return(MagickFalse);
        }
      if (LocaleCompare("density",property) == 0)
        {
          GeometryInfo
            geometry_info;

          flags=ParseGeometry(value,&geometry_info);
          if ((flags & RhoValue) != 0)
            image->resolution.x=geometry_info.rho;
          image->resolution.y=image->resolution.x;
          if ((flags & SigmaValue) != 0)
            image->resolution.y=geometry_info.sigma;
          return(MagickTrue);
        }
      if (LocaleCompare("depth",property) == 0)
        {
          image->depth=StringToUnsignedLong(value);
          return(MagickTrue);
        }
      if (LocaleCompare("dispose",property) == 0)
        {
          ssize_t
            dispose;

          dispose=ParseCommandOption(MagickDisposeOptions,MagickFalse,value);
          if (dispose < 0)
            return(MagickFalse); /* FUTURE: value exception?? */
          image->dispose=(DisposeType) dispose;
          return(MagickTrue);
        }
      break; /* not an attribute, add as a property */
    }
#if 0  /* Percent escape's sets values with this prefix: for later use
          Throwing an exception causes this setting to fail */
    case 'E':
    case 'e':
    {
      if (LocaleNCompare("exif:",property,5) == 0)
        {
          (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
            "SetReadOnlyProperty","`%s'",property);
          return(MagickFalse);
        }
      break; /* not an attribute, add as a property */
    }
    case 'F':
    case 'f':
    {
      if (LocaleNCompare("fx:",property,3) == 0)
        {
          (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
            "SetReadOnlyProperty","`%s'",property);
          return(MagickFalse);
        }
      break; /* not an attribute, add as a property */
    }
#endif
    case 'G':
    case 'g':
    {
      if (LocaleCompare("gamma",property) == 0)
        {
          image->gamma=StringToDouble(value,(char **) NULL);
          return(MagickTrue);
        }
      if (LocaleCompare("gravity",property) == 0)
        {
          ssize_t
            gravity;

          gravity=ParseCommandOption(MagickGravityOptions,MagickFalse,value);
          if (gravity < 0)
            return(MagickFalse); /* FUTURE: value exception?? */
          image->gravity=(GravityType) gravity;
          return(MagickTrue);
        }
      break; /* not an attribute, add as a property */
    }
    case 'H':
    case 'h':
    {
      if (LocaleCompare("height",property) == 0)
        {
          (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
            "SetReadOnlyProperty","`%s'",property);
          return(MagickFalse);
        }
      break; /* not an attribute, add as a property */
    }
    case 'I':
    case 'i':
    {
      if (LocaleCompare("intensity",property) == 0)
        {
          ssize_t
            intensity;

          intensity=ParseCommandOption(MagickIntensityOptions,MagickFalse,
            value);
          if (intensity < 0)
            return(MagickFalse);
          image->intensity=(PixelIntensityMethod) intensity;
          return(MagickTrue);
        }
      if (LocaleCompare("intent",property) == 0)
        {
          ssize_t
            rendering_intent;

          rendering_intent=ParseCommandOption(MagickIntentOptions,MagickFalse,
            value);
          if (rendering_intent < 0)
            return(MagickFalse); /* FUTURE: value exception?? */
          image->rendering_intent=(RenderingIntent) rendering_intent;
          return(MagickTrue);
        }
      if (LocaleCompare("interpolate",property) == 0)
        {
          ssize_t
            interpolate;

          interpolate=ParseCommandOption(MagickInterpolateOptions,MagickFalse,
            value);
          if (interpolate < 0)
            return(MagickFalse); /* FUTURE: value exception?? */
          image->interpolate=(PixelInterpolateMethod) interpolate;
          return(MagickTrue);
        }
#if 0  /* Percent escape's sets values with this prefix: for later use
          Throwing an exception causes this setting to fail */
      if (LocaleNCompare("iptc:",property,5) == 0)
        {
          (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
            "SetReadOnlyProperty","`%s'",property);
          return(MagickFalse);
        }
#endif
      break; /* not an attribute, add as a property */
    }
    case 'K':
    case 'k':
      if (LocaleCompare("kurtosis",property) == 0)
        {
          (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
            "SetReadOnlyProperty","`%s'",property);
          return(MagickFalse);
        }
      break; /* not an attribute, add as a property */
    case 'L':
    case 'l':
    {
      if (LocaleCompare("loop",property) == 0)
        {
          image->iterations=StringToUnsignedLong(value);
          return(MagickTrue);
        }
      break; /* not an attribute, add as a property */
    }
    case 'M':
    case 'm':
      if ((LocaleCompare("magick",property) == 0) ||
          (LocaleCompare("max",property) == 0) ||
          (LocaleCompare("mean",property) == 0) ||
          (LocaleCompare("min",property) == 0) ||
          (LocaleCompare("min",property) == 0))
        {
          (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
             "SetReadOnlyProperty","`%s'",property);
          return(MagickFalse);
        }
      break; /* not an attribute, add as a property */
    case 'O':
    case 'o':
      if (LocaleCompare("opaque",property) == 0)
        {
          (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
            "SetReadOnlyProperty","`%s'",property);
          return(MagickFalse);
        }
      break; /* not an attribute, add as a property */
    case 'P':
    case 'p':
    {
      if (LocaleCompare("page",property) == 0)
        {
          char
            *geometry;

          geometry=GetPageGeometry(value);
          flags=ParseAbsoluteGeometry(geometry,&image->page);
          geometry=DestroyString(geometry);
          return(MagickTrue);
        }
#if 0  /* Percent escape's sets values with this prefix: for later use
          Throwing an exception causes this setting to fail */
      if (LocaleNCompare("pixel:",property,6) == 0)
        {
          (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
            "SetReadOnlyProperty","`%s'",property);
          return(MagickFalse);
        }
#endif
      if (LocaleCompare("profile",property) == 0)
        {
          ImageInfo
            *image_info;

          StringInfo
            *profile;

          image_info=AcquireImageInfo();
          (void) CopyMagickString(image_info->filename,value,MagickPathExtent);
          (void) SetImageInfo(image_info,1,exception);
          profile=FileToStringInfo(image_info->filename,~0UL,exception);
          if (profile != (StringInfo *) NULL)
            {
              status=SetImageProfile(image,image_info->magick,profile,
                exception);
              profile=DestroyStringInfo(profile);
            }
          image_info=DestroyImageInfo(image_info);
          return(MagickTrue);
        }
      break; /* not an attribute, add as a property */
    }
    case 'R':
    case 'r':
    {
      if (LocaleCompare("rendering-intent",property) == 0)
        {
          ssize_t
            rendering_intent;

          rendering_intent=ParseCommandOption(MagickIntentOptions,MagickFalse,
            value);
          if (rendering_intent < 0)
            return(MagickFalse); /* FUTURE: value exception?? */
          image->rendering_intent=(RenderingIntent) rendering_intent;
          return(MagickTrue);
        }
      break; /* not an attribute, add as a property */
    }
    case 'S':
    case 's':
      if ((LocaleCompare("size",property) == 0) ||
          (LocaleCompare("skewness",property) == 0) ||
          (LocaleCompare("scenes",property) == 0) ||
          (LocaleCompare("standard-deviation",property) == 0))
        {
          (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
            "SetReadOnlyProperty","`%s'",property);
          return(MagickFalse);
        }
      break; /* not an attribute, add as a property */
    case 'T':
    case 't':
    {
      if (LocaleCompare("tile-offset",property) == 0)
        {
          char
            *geometry;

          geometry=GetPageGeometry(value);
          flags=ParseAbsoluteGeometry(geometry,&image->tile_offset);
          geometry=DestroyString(geometry);
          return(MagickTrue);
        }
      if (LocaleCompare("type",property) == 0)
        {
          ssize_t
            type;

          type=ParseCommandOption(MagickTypeOptions,MagickFalse,value);
          if (type < 0)
            return(MagickFalse);
          image->type=(ImageType) type;
          return(MagickTrue);
        }
      break; /* not an attribute, add as a property */
    }
    case 'U':
    case 'u':
    {
      if (LocaleCompare("units",property) == 0)
        {
          ssize_t
            units;

          units=ParseCommandOption(MagickResolutionOptions,MagickFalse,value);
          if (units < 0)
            return(MagickFalse); /* FUTURE: value exception?? */
          image->units=(ResolutionType) units;
          return(MagickTrue);
        }
      break; /* not an attribute, add as a property */
    }
    case 'V':
    case 'v':
    {
      if (LocaleCompare("version",property) == 0)
        {
          (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
            "SetReadOnlyProperty","`%s'",property);
          return(MagickFalse);
        }
      break; /* not an attribute, add as a property */
    }
    case 'W':
    case 'w':
    {
      if (LocaleCompare("width",property) == 0)
        {
          (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
            "SetReadOnlyProperty","`%s'",property);
          return(MagickFalse);
        }
      break; /* not an attribute, add as a property */
    }
#if 0  /* Percent escape's sets values with this prefix: for later use
          Throwing an exception causes this setting to fail */
    case 'X':
    case 'x':
    {
      if (LocaleNCompare("xmp:",property,4) == 0)
        {
          (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
            "SetReadOnlyProperty","`%s'",property);
          return(MagickFalse);
        }
      break; /* not an attribute, add as a property */
    }
#endif
  }
  /* Default: not an attribute, add as a property */
  status=AddValueToSplayTree((SplayTreeInfo *) image->properties,
    ConstantString(property),ConstantString(value));
  /* FUTURE: error if status is bad? */
  return(status);
}

Project: ImageMagick
File: property.c

MagickExport const char *GetImageProperty(const Image *image,
  const char *property,ExceptionInfo *exception)
{
  MagickBooleanType
    read_from_properties;

  const char
    *p;

  size_t
    property_length;

  assert(image != (Image *) NULL);
  assert(image->signature == MagickCoreSignature);
  if (image->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  if ((property == (const char *) NULL) || (*property == '\0'))
    return((const char *) NULL);
  read_from_properties=MagickTrue;
  property_length=strlen(property);
  if ((property_length > 2) && (*(property+(property_length-2)) == ':') &&
      (*(property+(property_length-1)) == '*'))
    read_from_properties=MagickFalse;
  if (read_from_properties != MagickFalse)
    {
      p=(const char *) NULL;
      if (image->properties != (void *) NULL)
        {
          if (property == (const char *) NULL)
            return((const char *) GetRootValueFromSplayTree((SplayTreeInfo *)
              image->properties));
          p=(const char *) GetValueFromSplayTree((SplayTreeInfo *)
            image->properties,property);
          if (p != (const char *) NULL)
            return(p);
        }
      if ((property == (const char *) NULL) ||
          (strchr(property,':') == (char *) NULL))
        return(p);
    }
  switch (*property)
  {
    case '8':
    {
      if (LocaleNCompare("8bim:",property,5) == 0)
        {
          (void) Get8BIMProperty(image,property,exception);
          break;
        }
      break;
    }
    case 'E':
    case 'e':
    {
      if (LocaleNCompare("exif:",property,5) == 0)
        {
          (void) GetEXIFProperty(image,property,exception);
          break;
        }
      break;
    }
    case 'I':
    case 'i':
    {
      if ((LocaleNCompare("icc:",property,4) == 0) ||
          (LocaleNCompare("icm:",property,4) == 0))
        {
          (void) GetICCProperty(image,property,exception);
          break;
        }
      if (LocaleNCompare("iptc:",property,5) == 0)
        {
          (void) GetIPTCProperty(image,property,exception);
          break;
        }
      break;
    }
    case 'X':
    case 'x':
    {
      if (LocaleNCompare("xmp:",property,4) == 0)
        {
          (void) GetXMPProperty(image,property);
          break;
        }
      break;
    }
    default:
      break;
  }
  if ((image->properties != (void *) NULL) &&
      (read_from_properties != MagickFalse))
    {
      p=(const char *) GetValueFromSplayTree((SplayTreeInfo *)
        image->properties,property);
      return(p);
    }
  return((const char *) NULL);
}

Project: ImageMagick
File: property.c

static MagickBooleanType Get8BIMProperty(const Image *image,const char *key,
  ExceptionInfo *exception)
{
  char
    *attribute,
    format[MagickPathExtent],
    name[MagickPathExtent],
    *resource;

  const StringInfo
    *profile;

  const unsigned char
    *info;

  long
    start,
    stop;

  MagickBooleanType
    status;

  ssize_t
    i;

  size_t
    length;

  ssize_t
    count,
    id,
    sub_number;

  /*
    There are no newlines in path names, so it's safe as terminator.
  */
  profile=GetImageProfile(image,"8bim");
  if (profile == (StringInfo *) NULL)
    return(MagickFalse);
  count=(ssize_t) sscanf(key,"8BIM:%ld,%ld:%1024[^\n]\n%1024[^\n]",&start,&stop,
    name,format);
  if ((count != 2) && (count != 3) && (count != 4))
    return(MagickFalse);
  if (count < 4)
    (void) CopyMagickString(format,"SVG",MagickPathExtent);
  if (count < 3)
    *name='\0';
  sub_number=1;
  if (*name == '#')
    sub_number=(ssize_t) StringToLong(&name[1]);
  sub_number=MagickMax(sub_number,1L);
  resource=(char *) NULL;
  status=MagickFalse;
  length=GetStringInfoLength(profile);
  info=GetStringInfoDatum(profile);
  while ((length > 0) && (status == MagickFalse))
  {
    if (ReadPropertyByte(&info,&length) != (unsigned char) '8')
      continue;
    if (ReadPropertyByte(&info,&length) != (unsigned char) 'B')
      continue;
    if (ReadPropertyByte(&info,&length) != (unsigned char) 'I')
      continue;
    if (ReadPropertyByte(&info,&length) != (unsigned char) 'M')
      continue;
    id=(ssize_t) ReadPropertyMSBShort(&info,&length);
    if (id < (ssize_t) start)
      continue;
    if (id > (ssize_t) stop)
      continue;
    if (resource != (char *) NULL)
      resource=DestroyString(resource);
    count=(ssize_t) ReadPropertyByte(&info,&length);
    if ((count != 0) && ((size_t) count <= length))
      {
        resource=(char *) NULL;
        if (~((size_t) count) >= (MagickPathExtent-1))
          resource=(char *) AcquireQuantumMemory((size_t) count+
            MagickPathExtent,sizeof(*resource));
        if (resource != (char *) NULL)
          {
            for (i=0; i < (ssize_t) count; i++)
              resource[i]=(char) ReadPropertyByte(&info,&length);
            resource[count]='\0';
          }
      }
    if ((count & 0x01) == 0)
      (void) ReadPropertyByte(&info,&length);
    count=(ssize_t) ReadPropertyMSBLong(&info,&length);
    if ((count < 0) || ((size_t) count > length))
      {
        length=0;
        continue;
      }
    if ((*name != '\0') && (*name != '#'))
      if ((resource == (char *) NULL) || (LocaleCompare(name,resource) != 0))
        {
          /*
            No name match, scroll forward and try next.
          */
          info+=count;
          length-=MagickMin(count,(ssize_t) length);
          continue;
        }
    if ((*name == '#') && (sub_number != 1))
      {
        /*
          No numbered match, scroll forward and try next.
        */
        sub_number--;
        info+=count;
        length-=MagickMin(count,(ssize_t) length);
        continue;
      }
    /*
      We have the resource of interest.
    */
    attribute=(char *) NULL;
    if (~((size_t) count) >= (MagickPathExtent-1))
      attribute=(char *) AcquireQuantumMemory((size_t) count+MagickPathExtent,
        sizeof(*attribute));
    if (attribute != (char *) NULL)
      {
        (void) memcpy(attribute,(char *) info,(size_t) count);
        attribute[count]='\0';
        info+=count;
        length-=MagickMin(count,(ssize_t) length);
        if ((id <= 1999) || (id >= 2999))
          (void) SetImageProperty((Image *) image,key,(const char *) attribute,
            exception);
        else
          {
            char
              *path;

            if (LocaleCompare(format,"svg") == 0)
              path=TraceSVGClippath((unsigned char *) attribute,(size_t) count,
                image->columns,image->rows);
            else
              path=TracePSClippath((unsigned char *) attribute,(size_t) count);
            (void) SetImageProperty((Image *) image,key,(const char *) path,
              exception);
            path=DestroyString(path);
          }
        attribute=DestroyString(attribute);
        status=MagickTrue;
      }
  }
  if (resource != (char *) NULL)
    resource=DestroyString(resource);
  return(status);
}

Project: ImageMagick
File: property.c

static MagickBooleanType GetEXIFProperty(const Image *image,
  const char *property,ExceptionInfo *exception)
{
#define MaxDirectoryStack  16
#define EXIF_DELIMITER  "\n"
#define EXIF_NUM_FORMATS  12
#define EXIF_FMT_BYTE  1
#define EXIF_FMT_STRING  2
#define EXIF_FMT_USHORT  3
#define EXIF_FMT_ULONG  4
#define EXIF_FMT_URATIONAL  5
#define EXIF_FMT_SBYTE  6
#define EXIF_FMT_UNDEFINED  7
#define EXIF_FMT_SSHORT  8
#define EXIF_FMT_SLONG  9
#define EXIF_FMT_SRATIONAL  10
#define EXIF_FMT_SINGLE  11
#define EXIF_FMT_DOUBLE  12
#define TAG_EXIF_OFFSET  0x8769
#define TAG_GPS_OFFSET  0x8825
#define TAG_INTEROP_OFFSET  0xa005

#define EXIFMultipleValues(size,format,arg) \
{ \
   ssize_t \
     component; \
 \
   size_t \
     len; \
 \
   unsigned char \
     *p1; \
 \
   len=0; \
   p1=p; \
   for (component=0; component < components; component++) \
   { \
     len+=FormatLocaleString(buffer+len,MagickPathExtent-len,format", ",arg); \
     if (len >= (MagickPathExtent-1)) \
       len=MagickPathExtent-1; \
     p1+=size; \
   } \
   if (len > 1) \
     buffer[len-2]='\0'; \
   value=AcquireString(buffer); \
}

#define EXIFMultipleFractions(size,format,arg1,arg2) \
{ \
   ssize_t \
     component; \
 \
   size_t \
     len; \
 \
   unsigned char \
     *p1; \
 \
   len=0; \
   p1=p; \
   for (component=0; component < components; component++) \
   { \
     len+=FormatLocaleString(buffer+len,MagickPathExtent-len,format", ", \
       (arg1),(arg2)); \
     if (len >= (MagickPathExtent-1)) \
       len=MagickPathExtent-1; \
     p1+=size; \
   } \
   if (len > 1) \
     buffer[len-2]='\0'; \
   value=AcquireString(buffer); \
}

  typedef struct _DirectoryInfo
  {
    const unsigned char
      *directory;

    size_t
      entry;

    ssize_t
      offset;
  } DirectoryInfo;

  typedef struct _TagInfo
  {
    size_t
      tag;

    const char
      description[36];
  } TagInfo;

  static const TagInfo
    EXIFTag[] =
    {
      {  0x001, "exif:InteroperabilityIndex" },
      {  0x002, "exif:InteroperabilityVersion" },
      {  0x100, "exif:ImageWidth" },
      {  0x101, "exif:ImageLength" },
      {  0x102, "exif:BitsPerSample" },
      {  0x103, "exif:Compression" },
      {  0x106, "exif:PhotometricInterpretation" },
      {  0x10a, "exif:FillOrder" },
      {  0x10d, "exif:DocumentName" },
      {  0x10e, "exif:ImageDescription" },
      {  0x10f, "exif:Make" },
      {  0x110, "exif:Model" },
      {  0x111, "exif:StripOffsets" },
      {  0x112, "exif:Orientation" },
      {  0x115, "exif:SamplesPerPixel" },
      {  0x116, "exif:RowsPerStrip" },
      {  0x117, "exif:StripByteCounts" },
      {  0x11a, "exif:XResolution" },
      {  0x11b, "exif:YResolution" },
      {  0x11c, "exif:PlanarConfiguration" },
      {  0x11d, "exif:PageName" },
      {  0x11e, "exif:XPosition" },
      {  0x11f, "exif:YPosition" },
      {  0x118, "exif:MinSampleValue" },
      {  0x119, "exif:MaxSampleValue" },
      {  0x120, "exif:FreeOffsets" },
      {  0x121, "exif:FreeByteCounts" },
      {  0x122, "exif:GrayResponseUnit" },
      {  0x123, "exif:GrayResponseCurve" },
      {  0x124, "exif:T4Options" },
      {  0x125, "exif:T6Options" },
      {  0x128, "exif:ResolutionUnit" },
      {  0x12d, "exif:TransferFunction" },
      {  0x131, "exif:Software" },
      {  0x132, "exif:DateTime" },
      {  0x13b, "exif:Artist" },
      {  0x13e, "exif:WhitePoint" },
      {  0x13f, "exif:PrimaryChromaticities" },
      {  0x140, "exif:ColorMap" },
      {  0x141, "exif:HalfToneHints" },
      {  0x142, "exif:TileWidth" },
      {  0x143, "exif:TileLength" },
      {  0x144, "exif:TileOffsets" },
      {  0x145, "exif:TileByteCounts" },
      {  0x14a, "exif:SubIFD" },
      {  0x14c, "exif:InkSet" },
      {  0x14d, "exif:InkNames" },
      {  0x14e, "exif:NumberOfInks" },
      {  0x150, "exif:DotRange" },
      {  0x151, "exif:TargetPrinter" },
      {  0x152, "exif:ExtraSample" },
      {  0x153, "exif:SampleFormat" },
      {  0x154, "exif:SMinSampleValue" },
      {  0x155, "exif:SMaxSampleValue" },
      {  0x156, "exif:TransferRange" },
      {  0x157, "exif:ClipPath" },
      {  0x158, "exif:XClipPathUnits" },
      {  0x159, "exif:YClipPathUnits" },
      {  0x15a, "exif:Indexed" },
      {  0x15b, "exif:JPEGTables" },
      {  0x15f, "exif:OPIProxy" },
      {  0x200, "exif:JPEGProc" },
      {  0x201, "exif:JPEGInterchangeFormat" },
      {  0x202, "exif:JPEGInterchangeFormatLength" },
      {  0x203, "exif:JPEGRestartInterval" },
      {  0x205, "exif:JPEGLosslessPredictors" },
      {  0x206, "exif:JPEGPointTransforms" },
      {  0x207, "exif:JPEGQTables" },
      {  0x208, "exif:JPEGDCTables" },
      {  0x209, "exif:JPEGACTables" },
      {  0x211, "exif:YCbCrCoefficients" },
      {  0x212, "exif:YCbCrSubSampling" },
      {  0x213, "exif:YCbCrPositioning" },
      {  0x214, "exif:ReferenceBlackWhite" },
      {  0x2bc, "exif:ExtensibleMetadataPlatform" },
      {  0x301, "exif:Gamma" },
      {  0x302, "exif:ICCProfileDescriptor" },
      {  0x303, "exif:SRGBRenderingIntent" },
      {  0x320, "exif:ImageTitle" },
      {  0x5001, "exif:ResolutionXUnit" },
      {  0x5002, "exif:ResolutionYUnit" },
      {  0x5003, "exif:ResolutionXLengthUnit" },
      {  0x5004, "exif:ResolutionYLengthUnit" },
      {  0x5005, "exif:PrintFlags" },
      {  0x5006, "exif:PrintFlagsVersion" },
      {  0x5007, "exif:PrintFlagsCrop" },
      {  0x5008, "exif:PrintFlagsBleedWidth" },
      {  0x5009, "exif:PrintFlagsBleedWidthScale" },
      {  0x500A, "exif:HalftoneLPI" },
      {  0x500B, "exif:HalftoneLPIUnit" },
      {  0x500C, "exif:HalftoneDegree" },
      {  0x500D, "exif:HalftoneShape" },
      {  0x500E, "exif:HalftoneMisc" },
      {  0x500F, "exif:HalftoneScreen" },
      {  0x5010, "exif:JPEGQuality" },
      {  0x5011, "exif:GridSize" },
      {  0x5012, "exif:ThumbnailFormat" },
      {  0x5013, "exif:ThumbnailWidth" },
      {  0x5014, "exif:ThumbnailHeight" },
      {  0x5015, "exif:ThumbnailColorDepth" },
      {  0x5016, "exif:ThumbnailPlanes" },
      {  0x5017, "exif:ThumbnailRawBytes" },
      {  0x5018, "exif:ThumbnailSize" },
      {  0x5019, "exif:ThumbnailCompressedSize" },
      {  0x501a, "exif:ColorTransferFunction" },
      {  0x501b, "exif:ThumbnailData" },
      {  0x5020, "exif:ThumbnailImageWidth" },
      {  0x5021, "exif:ThumbnailImageHeight" },
      {  0x5022, "exif:ThumbnailBitsPerSample" },
      {  0x5023, "exif:ThumbnailCompression" },
      {  0x5024, "exif:ThumbnailPhotometricInterp" },
      {  0x5025, "exif:ThumbnailImageDescription" },
      {  0x5026, "exif:ThumbnailEquipMake" },
      {  0x5027, "exif:ThumbnailEquipModel" },
      {  0x5028, "exif:ThumbnailStripOffsets" },
      {  0x5029, "exif:ThumbnailOrientation" },
      {  0x502a, "exif:ThumbnailSamplesPerPixel" },
      {  0x502b, "exif:ThumbnailRowsPerStrip" },
      {  0x502c, "exif:ThumbnailStripBytesCount" },
      {  0x502d, "exif:ThumbnailResolutionX" },
      {  0x502e, "exif:ThumbnailResolutionY" },
      {  0x502f, "exif:ThumbnailPlanarConfig" },
      {  0x5030, "exif:ThumbnailResolutionUnit" },
      {  0x5031, "exif:ThumbnailTransferFunction" },
      {  0x5032, "exif:ThumbnailSoftwareUsed" },
      {  0x5033, "exif:ThumbnailDateTime" },
      {  0x5034, "exif:ThumbnailArtist" },
      {  0x5035, "exif:ThumbnailWhitePoint" },
      {  0x5036, "exif:ThumbnailPrimaryChromaticities" },
      {  0x5037, "exif:ThumbnailYCbCrCoefficients" },
      {  0x5038, "exif:ThumbnailYCbCrSubsampling" },
      {  0x5039, "exif:ThumbnailYCbCrPositioning" },
      {  0x503A, "exif:ThumbnailRefBlackWhite" },
      {  0x503B, "exif:ThumbnailCopyRight" },
      {  0x5090, "exif:LuminanceTable" },
      {  0x5091, "exif:ChrominanceTable" },
      {  0x5100, "exif:FrameDelay" },
      {  0x5101, "exif:LoopCount" },
      {  0x5110, "exif:PixelUnit" },
      {  0x5111, "exif:PixelPerUnitX" },
      {  0x5112, "exif:PixelPerUnitY" },
      {  0x5113, "exif:PaletteHistogram" },
      {  0x1000, "exif:RelatedImageFileFormat" },
      {  0x1001, "exif:RelatedImageLength" },
      {  0x1002, "exif:RelatedImageWidth" },
      {  0x800d, "exif:ImageID" },
      {  0x80e3, "exif:Matteing" },
      {  0x80e4, "exif:DataType" },
      {  0x80e5, "exif:ImageDepth" },
      {  0x80e6, "exif:TileDepth" },
      {  0x828d, "exif:CFARepeatPatternDim" },
      {  0x828e, "exif:CFAPattern2" },
      {  0x828f, "exif:BatteryLevel" },
      {  0x8298, "exif:Copyright" },
      {  0x829a, "exif:ExposureTime" },
      {  0x829d, "exif:FNumber" },
      {  0x83bb, "exif:IPTC/NAA" },
      {  0x84e3, "exif:IT8RasterPadding" },
      {  0x84e5, "exif:IT8ColorTable" },
      {  0x8649, "exif:ImageResourceInformation" },
      {  0x8769, "exif:ExifOffset" },  /* specs as "Exif IFD Pointer"? */
      {  0x8773, "exif:InterColorProfile" },
      {  0x8822, "exif:ExposureProgram" },
      {  0x8824, "exif:SpectralSensitivity" },
      {  0x8825, "exif:GPSInfo" }, /* specs as "GPSInfo IFD Pointer"? */
      {  0x8827, "exif:PhotographicSensitivity" },
      {  0x8828, "exif:OECF" },
      {  0x8829, "exif:Interlace" },
      {  0x882a, "exif:TimeZoneOffset" },
      {  0x882b, "exif:SelfTimerMode" },
      {  0x8830, "exif:SensitivityType" },
      {  0x8831, "exif:StandardOutputSensitivity" },
      {  0x8832, "exif:RecommendedExposureIndex" },
      {  0x8833, "exif:ISOSpeed" },
      {  0x8834, "exif:ISOSpeedLatitudeyyy" },
      {  0x8835, "exif:ISOSpeedLatitudezzz" },
      {  0x9000, "exif:ExifVersion" },
      {  0x9003, "exif:DateTimeOriginal" },
      {  0x9004, "exif:DateTimeDigitized" },
      {  0x9010, "exif:OffsetTime" },
      {  0x9011, "exif:OffsetTimeOriginal" },
      {  0x9012, "exif:OffsetTimeDigitized" },
      {  0x9101, "exif:ComponentsConfiguration" },
      {  0x9102, "exif:CompressedBitsPerPixel" },
      {  0x9201, "exif:ShutterSpeedValue" },
      {  0x9202, "exif:ApertureValue" },
      {  0x9203, "exif:BrightnessValue" },
      {  0x9204, "exif:ExposureBiasValue" },
      {  0x9205, "exif:MaxApertureValue" },
      {  0x9206, "exif:SubjectDistance" },
      {  0x9207, "exif:MeteringMode" },
      {  0x9208, "exif:LightSource" },
      {  0x9209, "exif:Flash" },
      {  0x920a, "exif:FocalLength" },
      {  0x920b, "exif:FlashEnergy" },
      {  0x920c, "exif:SpatialFrequencyResponse" },
      {  0x920d, "exif:Noise" },
      {  0x9214, "exif:SubjectArea" },
      {  0x9290, "exif:SubSecTime" },
      {  0x9291, "exif:SubSecTimeOriginal" },
      {  0x9292, "exif:SubSecTimeDigitized" },
      {  0x9211, "exif:ImageNumber" },
      {  0x9212, "exif:SecurityClassification" },
      {  0x9213, "exif:ImageHistory" },
      {  0x9214, "exif:SubjectArea" },
      {  0x9215, "exif:ExposureIndex" },
      {  0x9216, "exif:TIFF-EPStandardID" },
      {  0x927c, "exif:MakerNote" },
      {  0x9286, "exif:UserComment" },
      {  0x9290, "exif:SubSecTime" },
      {  0x9291, "exif:SubSecTimeOriginal" },
      {  0x9292, "exif:SubSecTimeDigitized" },
      {  0x9400, "exif:Temperature" },
      {  0x9401, "exif:Humidity" },
      {  0x9402, "exif:Pressure" },
      {  0x9403, "exif:WaterDepth" },
      {  0x9404, "exif:Acceleration" },
      {  0x9405, "exif:CameraElevationAngle" },
      {  0x9C9b, "exif:WinXP-Title" },
      {  0x9C9c, "exif:WinXP-Comments" },
      {  0x9C9d, "exif:WinXP-Author" },
      {  0x9C9e, "exif:WinXP-Keywords" },
      {  0x9C9f, "exif:WinXP-Subject" },
      {  0xa000, "exif:FlashPixVersion" },
      {  0xa001, "exif:ColorSpace" },
      {  0xa002, "exif:PixelXDimension" },
      {  0xa003, "exif:PixelYDimension" },
      {  0xa004, "exif:RelatedSoundFile" },
      {  0xa005, "exif:InteroperabilityOffset" },
      {  0xa20b, "exif:FlashEnergy" },
      {  0xa20c, "exif:SpatialFrequencyResponse" },
      {  0xa20d, "exif:Noise" },
      {  0xa20e, "exif:FocalPlaneXResolution" },
      {  0xa20f, "exif:FocalPlaneYResolution" },
      {  0xa210, "exif:FocalPlaneResolutionUnit" },
      {  0xa214, "exif:SubjectLocation" },
      {  0xa215, "exif:ExposureIndex" },
      {  0xa216, "exif:TIFF/EPStandardID" },
      {  0xa217, "exif:SensingMethod" },
      {  0xa300, "exif:FileSource" },
      {  0xa301, "exif:SceneType" },
      {  0xa302, "exif:CFAPattern" },
      {  0xa401, "exif:CustomRendered" },
      {  0xa402, "exif:ExposureMode" },
      {  0xa403, "exif:WhiteBalance" },
      {  0xa404, "exif:DigitalZoomRatio" },
      {  0xa405, "exif:FocalLengthIn35mmFilm" },
      {  0xa406, "exif:SceneCaptureType" },
      {  0xa407, "exif:GainControl" },
      {  0xa408, "exif:Contrast" },
      {  0xa409, "exif:Saturation" },
      {  0xa40a, "exif:Sharpness" },
      {  0xa40b, "exif:DeviceSettingDescription" },
      {  0xa40c, "exif:SubjectDistanceRange" },
      {  0xa420, "exif:ImageUniqueID" },
      {  0xa430, "exif:CameraOwnerName" },
      {  0xa431, "exif:BodySerialNumber" },
      {  0xa432, "exif:LensSpecification" },
      {  0xa433, "exif:LensMake" },
      {  0xa434, "exif:LensModel" },
      {  0xa435, "exif:LensSerialNumber" },
      {  0xc4a5, "exif:PrintImageMatching" },
      {  0xa500, "exif:Gamma" },
      {  0xc640, "exif:CR2Slice" },
      { 0x10000, "exif:GPSVersionID" },
      { 0x10001, "exif:GPSLatitudeRef" },
      { 0x10002, "exif:GPSLatitude" },
      { 0x10003, "exif:GPSLongitudeRef" },
      { 0x10004, "exif:GPSLongitude" },
      { 0x10005, "exif:GPSAltitudeRef" },
      { 0x10006, "exif:GPSAltitude" },
      { 0x10007, "exif:GPSTimeStamp" },
      { 0x10008, "exif:GPSSatellites" },
      { 0x10009, "exif:GPSStatus" },
      { 0x1000a, "exif:GPSMeasureMode" },
      { 0x1000b, "exif:GPSDop" },
      { 0x1000c, "exif:GPSSpeedRef" },
      { 0x1000d, "exif:GPSSpeed" },
      { 0x1000e, "exif:GPSTrackRef" },
      { 0x1000f, "exif:GPSTrack" },
      { 0x10010, "exif:GPSImgDirectionRef" },
      { 0x10011, "exif:GPSImgDirection" },
      { 0x10012, "exif:GPSMapDatum" },
      { 0x10013, "exif:GPSDestLatitudeRef" },
      { 0x10014, "exif:GPSDestLatitude" },
      { 0x10015, "exif:GPSDestLongitudeRef" },
      { 0x10016, "exif:GPSDestLongitude" },
      { 0x10017, "exif:GPSDestBearingRef" },
      { 0x10018, "exif:GPSDestBearing" },
      { 0x10019, "exif:GPSDestDistanceRef" },
      { 0x1001a, "exif:GPSDestDistance" },
      { 0x1001b, "exif:GPSProcessingMethod" },
      { 0x1001c, "exif:GPSAreaInformation" },
      { 0x1001d, "exif:GPSDateStamp" },
      { 0x1001e, "exif:GPSDifferential" },
      { 0x1001f, "exif:GPSHPositioningError" },
      { 0x00000, "" }
    };  /* http://www.cipa.jp/std/documents/e/DC-008-Translation-2016-E.pdf */

  const StringInfo
    *profile;

  const unsigned char
    *directory,
    *exif;

  DirectoryInfo
    directory_stack[MaxDirectoryStack];

  EndianType
    endian;

  MagickBooleanType
    status;

  ssize_t
    i;

  size_t
    entry,
    length,
    number_entries,
    tag,
    tag_value;

  SplayTreeInfo
    *exif_resources;

  ssize_t
    all,
    id,
    level,
    offset,
    tag_offset;

  static int
    tag_bytes[] = {0, 1, 1, 2, 4, 8, 1, 1, 2, 4, 8, 4, 8};

  /*
    If EXIF data exists, then try to parse the request for a tag.
  */
  profile=GetImageProfile(image,"exif");
  if (profile == (const StringInfo *) NULL)
    return(MagickFalse);
  if ((property == (const char *) NULL) || (*property == '\0'))
    return(MagickFalse);
  while (isspace((int) ((unsigned char) *property)) != 0)
    property++;
  if (strlen(property) <= 5)
    return(MagickFalse);
  all=0;
  tag=(~0UL);
  switch (*(property+5))
  {
    case '*':
    {
      /*
        Caller has asked for all the tags in the EXIF data.
      */
      tag=0;
      all=1; /* return the data in description=value format */
      break;
    }
    case '!':
    {
      tag=0;
      all=2; /* return the data in tagid=value format */
      break;
    }
    case '#':
    case '@':
    {
      int
        c;

      size_t
        n;

      /*
        Check for a hex based tag specification first.
      */
      tag=(*(property+5) == '@') ? 1UL : 0UL;
      property+=6;
      n=strlen(property);
      if (n != 4)
        return(MagickFalse);
      /*
        Parse tag specification as a hex number.
      */
      n/=4;
      do
      {
        for (i=(ssize_t) n-1L; i >= 0; i--)
        {
          c=(*property++);
          tag<<=4;
          if ((c >= '0') && (c <= '9'))
            tag|=(c-'0');
          else
            if ((c >= 'A') && (c <= 'F'))
              tag|=(c-('A'-10));
            else
              if ((c >= 'a') && (c <= 'f'))
                tag|=(c-('a'-10));
              else
                return(MagickFalse);
        }
      } while (*property != '\0');
      break;
    }
    default:
    {
      /*
        Try to match the text with a tag name instead.
      */
      for (i=0; ; i++)
      {
        if (EXIFTag[i].tag == 0)
          break;
        if (LocaleCompare(EXIFTag[i].description,property) == 0)
          {
            tag=(size_t) EXIFTag[i].tag;
            break;
          }
      }
      break;
    }
  }
  if (tag == (~0UL))
    return(MagickFalse);
  length=GetStringInfoLength(profile);
  if (length < 6)
    return(MagickFalse);
  exif=GetStringInfoDatum(profile);
  while (length != 0)
  {
    if (ReadPropertyByte(&exif,&length) != 0x45)
      continue;
    if (ReadPropertyByte(&exif,&length) != 0x78)
      continue;
    if (ReadPropertyByte(&exif,&length) != 0x69)
      continue;
    if (ReadPropertyByte(&exif,&length) != 0x66)
      continue;
    if (ReadPropertyByte(&exif,&length) != 0x00)
      continue;
    if (ReadPropertyByte(&exif,&length) != 0x00)
      continue;
    break;
  }
  if (length < 16)
    return(MagickFalse);
  id=(ssize_t) ReadPropertySignedShort(LSBEndian,exif);
  endian=LSBEndian;
  if (id == 0x4949)
    endian=LSBEndian;
  else
    if (id == 0x4D4D)
      endian=MSBEndian;
    else
      return(MagickFalse);
  if (ReadPropertyUnsignedShort(endian,exif+2) != 0x002a)
    return(MagickFalse);
  /*
    This the offset to the first IFD.
  */
  offset=(ssize_t) ReadPropertySignedLong(endian,exif+4);
  if ((offset < 0) || (size_t) offset >= length)
    return(MagickFalse);
  /*
    Set the pointer to the first IFD and follow it were it leads.
  */
  status=MagickFalse;
  directory=exif+offset;
  level=0;
  entry=0;
  tag_offset=0;
  exif_resources=NewSplayTree((int (*)(const void *,const void *)) NULL,
    (void *(*)(void *)) NULL,(void *(*)(void *)) NULL);
  do
  {
    /*
      If there is anything on the stack then pop it off.
    */
    if (level > 0)
      {
        level--;
        directory=directory_stack[level].directory;
        entry=directory_stack[level].entry;
        tag_offset=directory_stack[level].offset;
      }
    if ((directory < exif) || (directory > (exif+length-2)))
      break;
    /*
      Determine how many entries there are in the current IFD.
    */
    number_entries=(size_t) ReadPropertyUnsignedShort(endian,directory);
    for ( ; entry < number_entries; entry++)
    {
      unsigned char
        *p,
        *q;

      size_t
        format;

      ssize_t
        components,
        number_bytes;

      q=(unsigned char *) (directory+(12*entry)+2);
      if (q > (exif+length-12))
        break;  /* corrupt EXIF */
      if (GetValueFromSplayTree(exif_resources,q) == q)
        break;
      (void) AddValueToSplayTree(exif_resources,q,q);
      tag_value=(size_t) ReadPropertyUnsignedShort(endian,q)+tag_offset;
      format=(size_t) ReadPropertyUnsignedShort(endian,q+2);
      if (format >= (sizeof(tag_bytes)/sizeof(*tag_bytes)))
        break;
      if (format == 0)
        break;  /* corrupt EXIF */
      components=(ssize_t) ReadPropertySignedLong(endian,q+4);
      if (components < 0)
        break;  /* corrupt EXIF */
      number_bytes=(size_t) components*tag_bytes[format];
      if (number_bytes < components)
        break;  /* prevent overflow */
      if (number_bytes <= 4)
        p=q+8;
      else
        {
          ssize_t
            dir_offset;

          /*
            The directory entry contains an offset.
          */
          dir_offset=(ssize_t) ReadPropertySignedLong(endian,q+8);
          if ((dir_offset < 0) || (size_t) dir_offset >= length)
            continue;
          if (((size_t) dir_offset+number_bytes) < (size_t) dir_offset)
            continue;  /* prevent overflow */
          if (((size_t) dir_offset+number_bytes) > length)
            continue;
          p=(unsigned char *) (exif+dir_offset);
        }
      if ((all != 0) || (tag == (size_t) tag_value))
        {
          char
            buffer[MagickPathExtent],
            *value;

          if ((p < exif) || (p > (exif+length-tag_bytes[format])))
            break;
          value=(char *) NULL;
          *buffer='\0';
          switch (format)
          {
            case EXIF_FMT_BYTE:
            case EXIF_FMT_UNDEFINED:
            {
              value=(char *) NULL;
              if (~((size_t) number_bytes) >= 1)
                value=(char *) AcquireQuantumMemory((size_t) number_bytes+1UL,
                  sizeof(*value));
              if (value != (char *) NULL)
                {
                  for (i=0; i < (ssize_t) number_bytes; i++)
                  {
                    value[i]='.';
                    if (isprint((int) p[i]) != 0)
                      value[i]=(char) p[i];
                  }
                  value[i]='\0';
                }
              break;
            }
            case EXIF_FMT_SBYTE:
            {
              EXIFMultipleValues(1,"%.20g",(double) (*(signed char *) p1));
              break;
            }
            case EXIF_FMT_SSHORT:
            {
              EXIFMultipleValues(2,"%hd",ReadPropertySignedShort(endian,p1));
              break;
            }
            case EXIF_FMT_USHORT:
            {
              EXIFMultipleValues(2,"%hu",ReadPropertyUnsignedShort(endian,p1));
              break;
            }
            case EXIF_FMT_ULONG:
            {
              EXIFMultipleValues(4,"%.20g",(double)
                ReadPropertyUnsignedLong(endian,p1));
              break;
            }
            case EXIF_FMT_SLONG:
            {
              EXIFMultipleValues(4,"%.20g",(double)
                ReadPropertySignedLong(endian,p1));
              break;
            }
            case EXIF_FMT_URATIONAL:
            {
              EXIFMultipleFractions(8,"%.20g/%.20g",(double)
                ReadPropertyUnsignedLong(endian,p1),(double)
                ReadPropertyUnsignedLong(endian,p1+4));
              break;
            }
            case EXIF_FMT_SRATIONAL:
            {
              EXIFMultipleFractions(8,"%.20g/%.20g",(double)
                ReadPropertySignedLong(endian,p1),(double)
                ReadPropertySignedLong(endian,p1+4));
              break;
            }
            case EXIF_FMT_SINGLE:
            {
              EXIFMultipleValues(4,"%f",(double)ReadPropertySignedLong(endian,p1));
              break;
            }
            case EXIF_FMT_DOUBLE:
            {
              EXIFMultipleValues(8,"%f",(double)ReadPropertySignedLong(endian,p1));
              break;
            }
            case EXIF_FMT_STRING:
            default:
            {
              if ((p < exif) || (p > (exif+length-number_bytes)))
                break;
              value=(char *) NULL;
              if (~((size_t) number_bytes) >= 1)
                value=(char *) AcquireQuantumMemory((size_t) number_bytes+1UL,
                  sizeof(*value));
              if (value != (char *) NULL)
                {
                  for (i=0; i < (ssize_t) number_bytes; i++)
                  {
                    value[i]='.';
                    if ((isprint((int) p[i]) != 0) || (p[i] == '\0'))
                      value[i]=(char) p[i];
                  }
                  value[i]='\0';
                }
              break;
            }
          }
          if (value != (char *) NULL)
            {
              char
                *key;

              key=AcquireString(property);
              switch (all)
              {
                case 1:
                {
                  const char
                    *description;

                  description="unknown";
                  for (i=0; ; i++)
                  {
                    if (EXIFTag[i].tag == 0)
                      break;
                    if (EXIFTag[i].tag == tag_value)
                      {
                        description=EXIFTag[i].description;
                        break;
                      }
                  }
                  (void) FormatLocaleString(key,MagickPathExtent,"%s",
                    description);
                  if (level == 2)
                    (void) SubstituteString(&key,"exif:","exif:thumbnail:");
                  break;
                }
                case 2:
                {
                  if (tag_value < 0x10000)
                    (void) FormatLocaleString(key,MagickPathExtent,"#%04lx",
                      (unsigned long) tag_value);
                  else
                    if (tag_value < 0x20000)
                      (void) FormatLocaleString(key,MagickPathExtent,"@%04lx",
                        (unsigned long) (tag_value & 0xffff));
                    else
                      (void) FormatLocaleString(key,MagickPathExtent,"unknown");
                  break;
                }
                default:
                {
                  if (level == 2)
                    (void) SubstituteString(&key,"exif:","exif:thumbnail:");
                }
              }
              if ((image->properties == (void *) NULL) ||
                  (GetValueFromSplayTree((SplayTreeInfo *) image->properties,
                    key) == (const void *) NULL))
                (void) SetImageProperty((Image *) image,key,value,exception);
              value=DestroyString(value);
              key=DestroyString(key);
              status=MagickTrue;
            }
        }
        if ((tag_value == TAG_EXIF_OFFSET) ||
            (tag_value == TAG_INTEROP_OFFSET) || (tag_value == TAG_GPS_OFFSET))
          {
            ssize_t
              tag_offset1;

            tag_offset1=(ssize_t) ReadPropertySignedLong(endian,p);
            if (((size_t) tag_offset1 < length) &&
                (level < (MaxDirectoryStack-2)))
              {
                ssize_t
                  tag_offset2;

                tag_offset2=(ssize_t) ((tag_value == TAG_GPS_OFFSET) ? 0x10000 :
                  0);
                directory_stack[level].directory=directory;
                entry++;
                directory_stack[level].entry=entry;
                directory_stack[level].offset=tag_offset;
                level++;
                /*
                  Check for duplicate tag.
                */
                for (i=0; i < level; i++)
                  if (directory_stack[i].directory == (exif+tag_offset1))
                    break;
                if (i < level)
                  break;  /* duplicate tag */
                directory_stack[level].directory=exif+tag_offset1;
                directory_stack[level].offset=tag_offset2;
                directory_stack[level].entry=0;
                level++;
                if ((directory+2+(12*number_entries)+4) > (exif+length))
                  break;
                tag_offset1=(ssize_t) ReadPropertySignedLong(endian,directory+
                  2+(12*number_entries));
                if ((tag_offset1 != 0) && ((size_t) tag_offset1 < length) &&
                    (level < (MaxDirectoryStack-2)))
                  {
                    directory_stack[level].directory=exif+tag_offset1;
                    directory_stack[level].entry=0;
                    directory_stack[level].offset=tag_offset2;
                    level++;
                  }
              }
            break;
          }
    }
  } while (level > 0);
  exif_resources=DestroySplayTree(exif_resources);
  return(status);
}

Project: ImageMagick
File: property.c

MagickExport char *InterpretImageProperties(ImageInfo *image_info,Image *image,
  const char *embed_text,ExceptionInfo *exception)
{
#define ExtendInterpretText(string_length) \
{ \
  size_t length=(string_length); \
  if ((size_t) (q-interpret_text+length+1) >= extent) \
    { \
      extent+=length; \
      interpret_text=(char *) ResizeQuantumMemory(interpret_text,extent+ \
        MagickPathExtent,sizeof(*interpret_text)); \
      if (interpret_text == (char *) NULL) \
        { \
          if (property_image != image) \
            property_image=DestroyImage(property_image); \
          if (property_info != image_info) \
            property_info=DestroyImageInfo(property_info); \
          return((char *) NULL); \
        } \
      q=interpret_text+strlen(interpret_text); \
   } \
}

#define AppendKeyValue2Text(key,value)\
{ \
  size_t length=strlen(key)+strlen(value)+2; \
  if ((size_t) (q-interpret_text+length+1) >= extent) \
    { \
      extent+=length; \
      interpret_text=(char *) ResizeQuantumMemory(interpret_text,extent+ \
        MagickPathExtent,sizeof(*interpret_text)); \
      if (interpret_text == (char *) NULL) \
        { \
          if (property_image != image) \
            property_image=DestroyImage(property_image); \
          if (property_info != image_info) \
            property_info=DestroyImageInfo(property_info); \
          return((char *) NULL); \
        } \
      q=interpret_text+strlen(interpret_text); \
     } \
   q+=FormatLocaleString(q,extent,"%s=%s\n",(key),(value)); \
}

#define AppendString2Text(string) \
{ \
  size_t length=strlen((string)); \
  if ((size_t) (q-interpret_text+length+1) >= extent) \
    { \
      extent+=length; \
      interpret_text=(char *) ResizeQuantumMemory(interpret_text,extent+ \
        MagickPathExtent,sizeof(*interpret_text)); \
      if (interpret_text == (char *) NULL) \
        { \
          if (property_image != image) \
            property_image=DestroyImage(property_image); \
          if (property_info != image_info) \
            property_info=DestroyImageInfo(property_info); \
          return((char *) NULL); \
        } \
      q=interpret_text+strlen(interpret_text); \
    } \
  (void) CopyMagickString(q,(string),extent); \
  q+=length; \
}

  char
    *interpret_text;

  Image
    *property_image;

  ImageInfo
    *property_info;

  MagickBooleanType
    number;

  char
    *q;  /* current position in interpret_text */

  const char
    *p;  /* position in embed_text string being expanded */

  size_t
    extent;  /* allocated length of interpret_text */

  if ((image != (Image *) NULL) && (image->debug != MagickFalse))
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  else
   if ((image_info != (ImageInfo *) NULL) && (image_info->debug != MagickFalse))
     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
       image_info->filename);
   else
     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s","no image");
  if (embed_text == (const char *) NULL)
    return(ConstantString(""));
  p=embed_text;
  while ((isspace((int) ((unsigned char) *p)) != 0) && (*p != '\0'))
    p++;
  if (*p == '\0')
    return(ConstantString(""));
  if ((*p == '@') && (IsPathAccessible(p+1) != MagickFalse))
    {
      /*
        Handle a '@' replace string from file.
      */
      if (IsRightsAuthorized(PathPolicyDomain,ReadPolicyRights,p) == MagickFalse)
        {
          errno=EPERM;
          (void) ThrowMagickException(exception,GetMagickModule(),PolicyError,
            "NotAuthorized","`%s'",p);
          return(ConstantString(""));
        }
      interpret_text=FileToString(p+1,~0UL,exception);
      if (interpret_text != (char *) NULL)
        return(interpret_text);
    }
  /*
    Translate any embedded format characters.
  */
  if (image_info != (ImageInfo *) NULL)
    property_info=image_info;
  else
    property_info=CloneImageInfo(image_info);
  if ((image != (Image *) NULL) && (image->columns != 0) && (image->rows != 0))
    property_image=image;
  else
    {
      property_image=AcquireImage(image_info,exception);
      (void) SetImageExtent(property_image,1,1,exception);
      (void) SetImageBackgroundColor(property_image,exception);
    }
  interpret_text=AcquireString(embed_text); /* new string with extra space */
  extent=MagickPathExtent;                  /* allocated space in string */
  number=MagickFalse;                       /* is last char a number? */
  for (q=interpret_text; *p!='\0'; number=isdigit((int) ((unsigned char) *p)) ? MagickTrue : MagickFalse,p++)
  {
    /*
      Look for the various escapes, (and handle other specials)
    */
    *q='\0';
    ExtendInterpretText(MagickPathExtent);
    switch (*p)
    {
      case '\\':
      {
        switch (*(p+1))
        {
          case '\0':
            continue;
          case 'r':  /* convert to RETURN */
          {
            *q++='\r';
            p++;
            continue;
          }
          case 'n':  /* convert to NEWLINE */
          {
            *q++='\n';
            p++;
            continue;
          }
          case '\n':  /* EOL removal UNIX,MacOSX */
          {
            p++;
            continue;
          }
          case '\r':  /* EOL removal DOS,Windows */
          {
            p++;
            if (*p == '\n') /* return-newline EOL */
              p++;
            continue;
          }
          default:
          {
            p++;
            *q++=(*p);
          }
        }
        continue;
      }
      case '&':
      {
        if (LocaleNCompare("&lt;",p,4) == 0)
          {
            *q++='<';
            p+=3;
          }
        else
          if (LocaleNCompare("&gt;",p,4) == 0)
            {
              *q++='>';
              p+=3;
            }
          else
            if (LocaleNCompare("&amp;",p,5) == 0)
              {
                *q++='&';
                p+=4;
              }
            else
              *q++=(*p);
        continue;
      }
      case '%':
        break;  /* continue to next set of handlers */
      default:
      {
        *q++=(*p);  /* any thing else is 'as normal' */
        continue;
      }
    }
    p++; /* advance beyond the percent */
    /*
      Doubled Percent - or percent at end of string.
    */
    if ((*p == '\0') || (*p == '\'') || (*p == '"'))
      p--;
    if (*p == '%')
      {
        *q++='%';
        continue;
      }
    /*
      Single letter escapes %c.
    */
    if (*p != '[')
      {
        const char
          *string;

        if (number != MagickFalse)
          {
            /*
              But only if not preceeded by a number!
            */
            *q++='%'; /* do NOT substitute the percent */
            p--;      /* back up one */
            continue;
          }
        string=GetMagickPropertyLetter(property_info,image,*p,exception);
        if (string != (char *) NULL)
          {
            AppendString2Text(string);
            (void) DeleteImageArtifact(property_image,"magick-property");
            (void) DeleteImageOption(property_info,"magick-property");
            continue;
          }
        (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
          "UnknownImageProperty","\"%%%c\"",*p);
        continue;
      }
    {
      char
        pattern[2*MagickPathExtent];

      const char
        *key,
        *string;

      ssize_t
        len;

      ssize_t
        depth;

      /*
        Braced Percent Escape %[...].
      */
      p++;  /* advance p to just inside the opening brace */
      depth=1;
      if (*p == ']')
        {
          (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
            "UnknownImageProperty","\"%%[]\"");
          break;
        }
      for (len=0; len < (MagickPathExtent-1L) && (*p != '\0'); )
      {
        if ((*p == '\\') && (*(p+1) != '\0'))
          {
            /*
              Skip escaped braces within braced pattern.
            */
            pattern[len++]=(*p++);
            pattern[len++]=(*p++);
            continue;
          }
        if (*p == '[')
          depth++;
        if (*p == ']')
          depth--;
        if (depth <= 0)
          break;
        pattern[len++]=(*p++);
      }
      pattern[len]='\0';
      if (depth != 0)
        {
          /*
            Check for unmatched final ']' for "%[...]".
          */
          if (len >= 64)
            {
              pattern[61] = '.';  /* truncate string for error message */
              pattern[62] = '.';
              pattern[63] = '.';
              pattern[64] = '\0';
            }
          (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
            "UnbalancedBraces","\"%%[%s\"",pattern);
          interpret_text=DestroyString(interpret_text);
          if (property_image != image)
            property_image=DestroyImage(property_image);
          if (property_info != image_info)
            property_info=DestroyImageInfo(property_info);
          return((char *) NULL);
        }
      /*
        Special Lookup Prefixes %[prefix:...].
      */
      if (LocaleNCompare("fx:",pattern,3) == 0)
        {
          double
            value;

          FxInfo
            *fx_info;

          MagickBooleanType
            status;

          /*
            FX - value calculator.
          */
          fx_info=AcquireFxInfo(property_image,pattern+3,exception);
          if (fx_info == (FxInfo *) NULL)
            continue;
          status=FxEvaluateChannelExpression(fx_info,CompositePixelChannel,0,0,
            &value,exception);
          fx_info=DestroyFxInfo(fx_info);
          if (status != MagickFalse)
            {
              char
                result[MagickPathExtent];

              (void) FormatLocaleString(result,MagickPathExtent,"%.*g",
                GetMagickPrecision(),(double) value);
              AppendString2Text(result);
            }
          continue;
        }
      if (LocaleNCompare("hex:",pattern,4) == 0)
        {
          double
            value;

          FxInfo
            *fx_info;

          MagickStatusType
            status;

          PixelInfo
            pixel;

          /*
            Pixel - color value calculator.
          */
          GetPixelInfo(property_image,&pixel);
          fx_info=AcquireFxInfo(property_image,pattern+4,exception);
          if (fx_info == (FxInfo *) NULL)
            continue;
          status=FxEvaluateChannelExpression(fx_info,RedPixelChannel,0,0,
            &value,exception);
          pixel.red=(double) QuantumRange*value;
          status&=FxEvaluateChannelExpression(fx_info,GreenPixelChannel,0,0,
            &value,exception);
          pixel.green=(double) QuantumRange*value;
          status&=FxEvaluateChannelExpression(fx_info,BluePixelChannel,0,0,
            &value,exception);
          pixel.blue=(double) QuantumRange*value;
          if (property_image->colorspace == CMYKColorspace)
            {
              status&=FxEvaluateChannelExpression(fx_info,BlackPixelChannel,0,0,
                &value,exception);
              pixel.black=(double) QuantumRange*value;
            }
          status&=FxEvaluateChannelExpression(fx_info,AlphaPixelChannel,0,0,
            &value,exception);
          pixel.alpha=(double) QuantumRange*value;
          fx_info=DestroyFxInfo(fx_info);
          if (status != MagickFalse)
            {
              char
                hex[MagickPathExtent];

              GetColorTuple(&pixel,MagickTrue,hex);
              AppendString2Text(hex+1);
            }
          continue;
        }
      if (LocaleNCompare("pixel:",pattern,6) == 0)
        {
          double
            value;

          FxInfo
            *fx_info;

          MagickStatusType
            status;

          PixelInfo
            pixel;

          /*
            Pixel - color value calculator.
          */
          GetPixelInfo(property_image,&pixel);
          fx_info=AcquireFxInfo(property_image,pattern+6,exception);
          if (fx_info == (FxInfo *) NULL)
            continue;
          status=FxEvaluateChannelExpression(fx_info,RedPixelChannel,0,0,
            &value,exception);
          pixel.red=(double) QuantumRange*value;
          status&=FxEvaluateChannelExpression(fx_info,GreenPixelChannel,0,0,
            &value,exception);
          pixel.green=(double) QuantumRange*value;
          status&=FxEvaluateChannelExpression(fx_info,BluePixelChannel,0,0,
            &value,exception);
          pixel.blue=(double) QuantumRange*value;
          if (property_image->colorspace == CMYKColorspace)
            {
              status&=FxEvaluateChannelExpression(fx_info,BlackPixelChannel,0,0,
                &value,exception);
              pixel.black=(double) QuantumRange*value;
            }
          status&=FxEvaluateChannelExpression(fx_info,AlphaPixelChannel,0,0,
            &value,exception);
          pixel.alpha=(double) QuantumRange*value;
          fx_info=DestroyFxInfo(fx_info);
          if (status != MagickFalse)
            {
              char
                name[MagickPathExtent];

              GetColorTuple(&pixel,MagickFalse,name);
              string=GetImageArtifact(property_image,"pixel:compliance");
              if (string != (char *) NULL)
                {
                  ComplianceType compliance=(ComplianceType) ParseCommandOption(
                    MagickComplianceOptions,MagickFalse,string);
                  (void) QueryColorname(property_image,&pixel,compliance,name,
                    exception);
                }
              AppendString2Text(name);
            }
          continue;
        }
      if (LocaleNCompare("option:",pattern,7) == 0)
        {
          /*
            Option - direct global option lookup (with globbing).
          */
          if (IsGlob(pattern+7) != MagickFalse)
            {
              ResetImageOptionIterator(property_info);
              while ((key=GetNextImageOption(property_info)) != (const char *) NULL)
                if (GlobExpression(key,pattern+7,MagickTrue) != MagickFalse)
                  {
                    string=GetImageOption(property_info,key);
                    if (string != (const char *) NULL)
                      AppendKeyValue2Text(key,string);
                    /* else - assertion failure? key found but no string value! */
                  }
              continue;
            }
          string=GetImageOption(property_info,pattern+7);
          if (string == (char *) NULL)
            goto PropertyLookupFailure; /* no artifact of this specifc name */
          AppendString2Text(string);
          continue;
        }
      if (LocaleNCompare("artifact:",pattern,9) == 0)
        {
          /*
            Artifact - direct image artifact lookup (with glob).
          */
          if (IsGlob(pattern+9) != MagickFalse)
            {
              ResetImageArtifactIterator(property_image);
              while ((key=GetNextImageArtifact(property_image)) != (const char *) NULL)
              if (GlobExpression(key,pattern+9,MagickTrue) != MagickFalse)
                {
                  string=GetImageArtifact(property_image,key);
                  if (string != (const char *) NULL)
                    AppendKeyValue2Text(key,string);
                  /* else - assertion failure? key found but no string value! */
                }
              continue;
            }
          string=GetImageArtifact(property_image,pattern+9);
          if (string == (char *) NULL)
            goto PropertyLookupFailure; /* no artifact of this specifc name */
          AppendString2Text(string);
          continue;
        }
      if (LocaleNCompare("property:",pattern,9) == 0)
        {
          /*
            Property - direct image property lookup (with glob).
          */
          if (IsGlob(pattern+9) != MagickFalse)
            {
              ResetImagePropertyIterator(property_image);
              while ((key=GetNextImageProperty(property_image)) != (const char *) NULL)
                if (GlobExpression(key,pattern,MagickTrue) != MagickFalse)
                  {
                    string=GetImageProperty(property_image,key,exception);
                    if (string != (const char *) NULL)
                      AppendKeyValue2Text(key,string);
                    /* else - assertion failure? */
                  }
              continue;
            }
          string=GetImageProperty(property_image,pattern+9,exception);
          if (string == (char *) NULL)
            goto PropertyLookupFailure; /* no artifact of this specifc name */
          AppendString2Text(string);
          continue;
        }
      /*
        Properties without special prefix.  This handles attributes,
        properties, and profiles such as %[exif:...].  Note the profile
        properties may also include a glob expansion pattern.
      */
      string=GetImageProperty(property_image,pattern,exception);
      if (string != (const char *) NULL)
        {
          AppendString2Text(string);
          (void) DeleteImageArtifact(property_image,"magick-property");
          (void) DeleteImageOption(property_info,"magick-property");
          continue;
        }
      if (IsGlob(pattern) != MagickFalse)
        {
          /*
            Handle property 'glob' patterns such as:
            %[*] %[user:array_??] %[filename:e*]>
          */
          ResetImagePropertyIterator(property_image);
          while ((key=GetNextImageProperty(property_image)) != (const char *) NULL)
            if (GlobExpression(key,pattern,MagickTrue) != MagickFalse)
              {
                string=GetImageProperty(property_image,key,exception);
                if (string != (const char *) NULL)
                  AppendKeyValue2Text(key,string);
                /* else - assertion failure? */
              }
          continue;
        }
      /*
        Look for a known property or image attribute such as
        %[basename] %[denisty] %[delay].  Also handles a braced single
        letter: %[b] %[G] %[g].
      */
      string=GetMagickProperty(property_info,property_image,pattern,exception);
      if (string != (const char *) NULL)
        {
          AppendString2Text(string);
          continue;
        }
      /*
        Look for a per-image artifact. This includes option lookup
        (FUTURE: interpreted according to image).
      */
      string=GetImageArtifact(property_image,pattern);
      if (string != (char *) NULL)
        {
          AppendString2Text(string);
          continue;
        }
      /*
        No image, so direct 'option' lookup (no delayed percent escapes).
      */
      string=GetImageOption(property_info,pattern);
      if (string != (char *) NULL)
        {
          AppendString2Text(string);
          continue;
        }
PropertyLookupFailure:
      /*
        Failed to find any match anywhere!
      */
      if (len >= 64)
        {
          pattern[61] = '.';  /* truncate string for error message */
          pattern[62] = '.';
          pattern[63] = '.';
          pattern[64] = '\0';
        }
      (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning,
        "UnknownImageProperty","\"%%[%s]\"",pattern);
    }
  }
  *q='\0';
  if (property_image != image)
    property_image=DestroyImage(property_image);
  if (property_info != image_info)
    property_info=DestroyImageInfo(property_info);
  return(interpret_text);
}

Project: ImageMagick
File: property.c

static char *TracePSClippath(const unsigned char *blob,size_t length)
{
  char
    *path,
    *message;

  MagickBooleanType
    in_subpath;

  PointInfo
    first[3],
    last[3],
    point[3];

  ssize_t
    i,
    x;

  ssize_t
    knot_count,
    selector,
    y;

  path=AcquireString((char *) NULL);
  if (path == (char *) NULL)
    return((char *) NULL);
  message=AcquireString((char *) NULL);
  (void) FormatLocaleString(message,MagickPathExtent,"/ClipImage\n");
  (void) ConcatenateString(&path,message);
  (void) FormatLocaleString(message,MagickPathExtent,"{\n");
  (void) ConcatenateString(&path,message);
  (void) FormatLocaleString(message,MagickPathExtent,
    "  /c {curveto} bind def\n");
  (void) ConcatenateString(&path,message);
  (void) FormatLocaleString(message,MagickPathExtent,
    "  /l {lineto} bind def\n");
  (void) ConcatenateString(&path,message);
  (void) FormatLocaleString(message,MagickPathExtent,
    "  /m {moveto} bind def\n");
  (void) ConcatenateString(&path,message);
  (void) FormatLocaleString(message,MagickPathExtent,
    "  /v {currentpoint 6 2 roll curveto} bind def\n");
  (void) ConcatenateString(&path,message);
  (void) FormatLocaleString(message,MagickPathExtent,
    "  /y {2 copy curveto} bind def\n");
  (void) ConcatenateString(&path,message);
  (void) FormatLocaleString(message,MagickPathExtent,
    "  /z {closepath} bind def\n");
  (void) ConcatenateString(&path,message);
  (void) FormatLocaleString(message,MagickPathExtent,"  newpath\n");
  (void) ConcatenateString(&path,message);
  /*
    The clipping path format is defined in "Adobe Photoshop File Formats
    Specification" version 6.0 downloadable from adobe.com.
  */
  (void) memset(point,0,sizeof(point));
  (void) memset(first,0,sizeof(first));
  (void) memset(last,0,sizeof(last));
  knot_count=0;
  in_subpath=MagickFalse;
  while (length > 0)
  {
    selector=(ssize_t) ReadPropertyMSBShort(&blob,&length);
    switch (selector)
    {
      case 0:
      case 3:
      {
        if (knot_count != 0)
          {
            blob+=24;
            length-=MagickMin(24,(ssize_t) length);
            break;
          }
        /*
          Expected subpath length record.
        */
        knot_count=(ssize_t) ReadPropertyMSBShort(&blob,&length);
        blob+=22;
        length-=MagickMin(22,(ssize_t) length);
        break;
      }
      case 1:
      case 2:
      case 4:
      case 5:
      {
        if (knot_count == 0)
          {
            /*
              Unexpected subpath knot
            */
            blob+=24;
            length-=MagickMin(24,(ssize_t) length);
            break;
          }
        /*
          Add sub-path knot
        */
        for (i=0; i < 3; i++)
        {
          y=(ssize_t) ReadPropertyMSBLong(&blob,&length);
          x=(ssize_t) ReadPropertyMSBLong(&blob,&length);
          point[i].x=(double) x/4096.0/4096.0;
          point[i].y=1.0-(double) y/4096.0/4096.0;
        }
        if (in_subpath == MagickFalse)
          {
            (void) FormatLocaleString(message,MagickPathExtent,"  %g %g m\n",
              point[1].x,point[1].y);
            for (i=0; i < 3; i++)
            {
              first[i]=point[i];
              last[i]=point[i];
            }
          }
        else
          {
            /*
              Handle special cases when Bezier curves are used to describe
              corners and straight lines.
            */
            if ((last[1].x == last[2].x) && (last[1].y == last[2].y) &&
                (point[0].x == point[1].x) && (point[0].y == point[1].y))
              (void) FormatLocaleString(message,MagickPathExtent,
                "  %g %g l\n",point[1].x,point[1].y);
            else
              if ((last[1].x == last[2].x) && (last[1].y == last[2].y))
                (void) FormatLocaleString(message,MagickPathExtent,
                  "  %g %g %g %g v\n",point[0].x,point[0].y,
                  point[1].x,point[1].y);
              else
                if ((point[0].x == point[1].x) && (point[0].y == point[1].y))
                  (void) FormatLocaleString(message,MagickPathExtent,
                    "  %g %g %g %g y\n",last[2].x,last[2].y,
                    point[1].x,point[1].y);
                else
                  (void) FormatLocaleString(message,MagickPathExtent,
                    "  %g %g %g %g %g %g c\n",last[2].x,
                    last[2].y,point[0].x,point[0].y,point[1].x,point[1].y);
            for (i=0; i < 3; i++)
              last[i]=point[i];
          }
        (void) ConcatenateString(&path,message);
        in_subpath=MagickTrue;
        knot_count--;
        /*
          Close the subpath if there are no more knots.
        */
        if (knot_count == 0)
          {
            /*
              Same special handling as above except we compare to the
              first point in the path and close the path.
            */
            if ((last[1].x == last[2].x) && (last[1].y == last[2].y) &&
                (first[0].x == first[1].x) && (first[0].y == first[1].y))
              (void) FormatLocaleString(message,MagickPathExtent,
                "  %g %g l z\n",first[1].x,first[1].y);
            else
              if ((last[1].x == last[2].x) && (last[1].y == last[2].y))
                (void) FormatLocaleString(message,MagickPathExtent,
                  "  %g %g %g %g v z\n",first[0].x,first[0].y,
                  first[1].x,first[1].y);
              else
                if ((first[0].x == first[1].x) && (first[0].y == first[1].y))
                  (void) FormatLocaleString(message,MagickPathExtent,
                    "  %g %g %g %g y z\n",last[2].x,last[2].y,
                    first[1].x,first[1].y);
                else
                  (void) FormatLocaleString(message,MagickPathExtent,
                    "  %g %g %g %g %g %g c z\n",last[2].x,
                    last[2].y,first[0].x,first[0].y,first[1].x,first[1].y);
            (void) ConcatenateString(&path,message);
            in_subpath=MagickFalse;
          }
        break;
      }
      case 6:
      case 7:
      case 8:
      default:
      {
        blob+=24;
        length-=MagickMin(24,(ssize_t) length);
        break;
      }
    }
  }
  /*
    Returns an empty PS path if the path has no knots.
  */
  (void) FormatLocaleString(message,MagickPathExtent,"  eoclip\n");
  (void) ConcatenateString(&path,message);
  (void) FormatLocaleString(message,MagickPathExtent,"} bind def");
  (void) ConcatenateString(&path,message);
  message=DestroyString(message);
  return(path);
}

Project: ImageMagick
File: property.c

MagickExport MagickBooleanType DefineImageProperty(Image *image,
  const char *property,ExceptionInfo *exception)
{
  char
    key[MagickPathExtent],
    value[MagickPathExtent];

  char
    *p;

  assert(image != (Image *) NULL);
  assert(property != (const char *) NULL);
  (void) CopyMagickString(key,property,MagickPathExtent-1);
  for (p=key; *p != '\0'; p++)
    if (*p == '=')
      break;
  *value='\0';
  if (*p == '=')
    (void) CopyMagickString(value,p+1,MagickPathExtent);
  *p='\0';
  return(SetImageProperty(image,key,value,exception));
}

Project: ImageMagick
File: property.c

static MagickBooleanType GetICCProperty(const Image *image,const char *property,
  ExceptionInfo *exception)
{
  const StringInfo
    *profile;

  /*
    Return ICC profile property.
  */
  magick_unreferenced(property);
  profile=GetImageProfile(image,"icc");
  if (profile == (StringInfo *) NULL)
    profile=GetImageProfile(image,"icm");
  if (profile == (StringInfo *) NULL)
    return(MagickFalse);
  if (GetStringInfoLength(profile) < 128)
    return(MagickFalse);  /* minimum ICC profile length */
#if defined(MAGICKCORE_LCMS_DELEGATE)
  {
    cmsHPROFILE
      icc_profile;

    icc_profile=cmsOpenProfileFromMem(GetStringInfoDatum(profile),
      (cmsUInt32Number) GetStringInfoLength(profile));
    if (icc_profile != (cmsHPROFILE *) NULL)
      {
#if defined(LCMS_VERSION) && (LCMS_VERSION < 2000)
        const char
          *name;

        name=cmsTakeProductName(icc_profile);
        if (name != (const char *) NULL)
          (void) SetImageProperty((Image *) image,"icc:name",name,exception);
#else
        StringInfo
          *info;

        unsigned int
          extent;

        info=AcquireStringInfo(0);
        extent=cmsGetProfileInfoASCII(icc_profile,cmsInfoDescription,"en","US",
          NULL,0);
        if (extent != 0)
          {
            SetStringInfoLength(info,extent+1);
            extent=cmsGetProfileInfoASCII(icc_profile,cmsInfoDescription,"en",
              "US",(char *) GetStringInfoDatum(info),extent);
            if (extent != 0)
              (void) SetImageProperty((Image *) image,"icc:description",
                (char *) GetStringInfoDatum(info),exception);
         }
        extent=cmsGetProfileInfoASCII(icc_profile,cmsInfoManufacturer,"en","US",
          NULL,0);
        if (extent != 0)
          {
            SetStringInfoLength(info,extent+1);
            extent=cmsGetProfileInfoASCII(icc_profile,cmsInfoManufacturer,"en",
              "US",(char *) GetStringInfoDatum(info),extent);
            if (extent != 0)
              (void) SetImageProperty((Image *) image,"icc:manufacturer",
                (char *) GetStringInfoDatum(info),exception);
          }
        extent=cmsGetProfileInfoASCII(icc_profile,cmsInfoModel,"en","US",
          NULL,0);
        if (extent != 0)
          {
            SetStringInfoLength(info,extent+1);
            extent=cmsGetProfileInfoASCII(icc_profile,cmsInfoModel,"en","US",
              (char *) GetStringInfoDatum(info),extent);
            if (extent != 0)
              (void) SetImageProperty((Image *) image,"icc:model",
                (char *) GetStringInfoDatum(info),exception);
          }
        extent=cmsGetProfileInfoASCII(icc_profile,cmsInfoCopyright,"en","US",
          NULL,0);
        if (extent != 0)
          {
            SetStringInfoLength(info,extent+1);
            extent=cmsGetProfileInfoASCII(icc_profile,cmsInfoCopyright,"en",
              "US",(char *) GetStringInfoDatum(info),extent);
            if (extent != 0)
              (void) SetImageProperty((Image *) image,"icc:copyright",
                (char *) GetStringInfoDatum(info),exception);
          }
        info=DestroyStringInfo(info);
#endif
        (void) cmsCloseProfile(icc_profile);
      }
  }
#endif
  return(MagickTrue);
}

Project: ImageMagick
File: property.c

static const char *GetMagickPropertyLetter(ImageInfo *image_info,
  Image *image,const char letter,ExceptionInfo *exception)
{
#define WarnNoImageReturn(format,arg) \
  if (image == (Image *) NULL ) { \
    (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning, \
      "NoImageForProperty",format,arg); \
    return((const char *) NULL); \
  }
#define WarnNoImageInfoReturn(format,arg) \
  if (image_info == (ImageInfo *) NULL ) { \
    (void) ThrowMagickException(exception,GetMagickModule(),OptionWarning, \
      "NoImageInfoForProperty",format,arg); \
    return((const char *) NULL); \
  }

  char
    value[MagickPathExtent];  /* formatted string to store as an artifact */

  const char
    *string;     /* return a string already stored somewher */

  if ((image != (Image *) NULL) && (image->debug != MagickFalse))
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  else
    if ((image_info != (ImageInfo *) NULL) &&
        (image_info->debug != MagickFalse))
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s","no-images");
  *value='\0';           /* formatted string */
  string=(char *) NULL;  /* constant string reference */
  /*
    Get properities that are directly defined by images.
  */
  switch (letter)
  {
    case 'b':  /* image size read in - in bytes */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      (void) FormatMagickSize(image->extent,MagickFalse,"B",MagickPathExtent,
        value);
      if (image->extent == 0)
        (void) FormatMagickSize(GetBlobSize(image),MagickFalse,"B",
          MagickPathExtent,value);
      break;
    }
    case 'c':  /* image comment property - empty string by default */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      string=GetImageProperty(image,"comment",exception);
      if ( string == (const char *) NULL )
        string="";
      break;
    }
    case 'd':  /* Directory component of filename */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      GetPathComponent(image->magick_filename,HeadPath,value);
      if (*value == '\0')
        string="";
      break;
    }
    case 'e': /* Filename extension (suffix) of image file */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      GetPathComponent(image->magick_filename,ExtensionPath,value);
      if (*value == '\0')
        string="";
      break;
    }
    case 'f': /* Filename without directory component */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      GetPathComponent(image->magick_filename,TailPath,value);
      if (*value == '\0')
        string="";
      break;
    }
    case 'g': /* Image geometry, canvas and offset  %Wx%H+%X+%Y */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      (void) FormatLocaleString(value,MagickPathExtent,
        "%.20gx%.20g%+.20g%+.20g",(double) image->page.width,(double)
        image->page.height,(double) image->page.x,(double) image->page.y);
      break;
    }
    case 'h': /* Image height (current) */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
        (image->rows != 0 ? image->rows : image->magick_rows));
      break;
    }
    case 'i': /* Filename last used for an image (read or write) */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      string=image->filename;
      break;
    }
    case 'k': /* Number of unique colors  */
    {
      /*
        FUTURE: ensure this does not generate the formatted comment!
      */
      WarnNoImageReturn("\"%%%c\"",letter);
      (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
        GetNumberColors(image,(FILE *) NULL,exception));
      break;
    }
    case 'l': /* Image label property - empty string by default */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      string=GetImageProperty(image,"label",exception);
      if (string == (const char *) NULL)
        string="";
      break;
    }
    case 'm': /* Image format (file magick) */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      string=image->magick;
      break;
    }
    case 'n': /* Number of images in the list.  */
    {
      if ( image != (Image *) NULL )
        (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
          GetImageListLength(image));
      else
        string="0";    /* no images or scenes */
      break;
    }
    case 'o': /* Output Filename - for delegate use only */
    {
      WarnNoImageInfoReturn("\"%%%c\"",letter);
      string=image_info->filename;
      break;
    }
    case 'p': /* Image index in current image list */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
        GetImageIndexInList(image));
      break;
    }
    case 'q': /* Quantum depth of image in memory */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
        MAGICKCORE_QUANTUM_DEPTH);
      break;
    }
    case 'r': /* Image storage class, colorspace, and alpha enabled.  */
    {
      ColorspaceType
        colorspace;

      WarnNoImageReturn("\"%%%c\"",letter);
      colorspace=image->colorspace;
      (void) FormatLocaleString(value,MagickPathExtent,"%s %s %s",
        CommandOptionToMnemonic(MagickClassOptions,(ssize_t)
        image->storage_class),CommandOptionToMnemonic(MagickColorspaceOptions,
        (ssize_t) colorspace),image->alpha_trait != UndefinedPixelTrait ?
        "Alpha" : "");
      break;
    }
    case 's': /* Image scene number */
    {
#if 0  /* this seems non-sensical -- simplifing */
      if (image_info->number_scenes != 0)
        (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
          image_info->scene);
      else if (image != (Image *) NULL)
        (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
          image->scene);
      else
          string="0";
#else
      WarnNoImageReturn("\"%%%c\"",letter);
      (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
        image->scene);
#endif
      break;
    }
    case 't': /* Base filename without directory or extention */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      GetPathComponent(image->magick_filename,BasePath,value);
      if (*value == '\0')
        string="";
      break;
    }
    case 'u': /* Unique filename */
    {
      WarnNoImageInfoReturn("\"%%%c\"",letter);
      string=image_info->unique;
      break;
    }
    case 'w': /* Image width (current) */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
        (image->columns != 0 ? image->columns : image->magick_columns));
      break;
    }
    case 'x': /* Image horizontal resolution (with units) */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      (void) FormatLocaleString(value,MagickPathExtent,"%.20g",
        fabs(image->resolution.x) > MagickEpsilon ? image->resolution.x :
        image->units == PixelsPerCentimeterResolution ? DefaultResolution/2.54 :
        DefaultResolution);
      break;
    }
    case 'y': /* Image vertical resolution (with units) */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      (void) FormatLocaleString(value,MagickPathExtent,"%.20g",
        fabs(image->resolution.y) > MagickEpsilon ? image->resolution.y :
        image->units == PixelsPerCentimeterResolution ? DefaultResolution/2.54 :
        DefaultResolution);
      break;
    }
    case 'z': /* Image depth as read in */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
        image->depth);
      break;
    }
    case 'A': /* Image alpha channel  */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      string=CommandOptionToMnemonic(MagickPixelTraitOptions,(ssize_t)
        image->alpha_trait);
      break;
    }
    case 'B':  /* image size read in - in bytes */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
        image->extent);
      if (image->extent == 0)
        (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
          GetBlobSize(image));
      break;
    }
    case 'C': /* Image compression method.  */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      string=CommandOptionToMnemonic(MagickCompressOptions,(ssize_t)
        image->compression);
      break;
    }
    case 'D': /* Image dispose method.  */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      string=CommandOptionToMnemonic(MagickDisposeOptions,(ssize_t)
        image->dispose);
      break;
    }
    case 'G': /* Image size as geometry = "%wx%h" */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      (void) FormatLocaleString(value,MagickPathExtent,"%.20gx%.20g",(double)
        image->magick_columns,(double) image->magick_rows);
      break;
    }
    case 'H': /* layer canvas height */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
        image->page.height);
      break;
    }
    case 'M': /* Magick filename - filename given incl. coder & read mods */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      string=image->magick_filename;
      break;
    }
    case 'N': /* Number of images in the list.  */
    {
      if ((image != (Image *) NULL) && (image->next == (Image *) NULL))
        (void) FormatLocaleString(value,MagickPathExtent,"%.20g\n",(double)
          GetImageListLength(image));
      else
        string="";
      break;
    }
    case 'O': /* layer canvas offset with sign = "+%X+%Y" */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      (void) FormatLocaleString(value,MagickPathExtent,"%+ld%+ld",(long)
        image->page.x,(long) image->page.y);
      break;
    }
    case 'P': /* layer canvas page size = "%Wx%H" */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      (void) FormatLocaleString(value,MagickPathExtent,"%.20gx%.20g",(double)
        image->page.width,(double) image->page.height);
      break;
    }
    case 'Q': /* image compression quality */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
        (image->quality == 0 ? 92 : image->quality));
      break;
    }
    case 'S': /* Number of scenes in image list.  */
    {
      WarnNoImageInfoReturn("\"%%%c\"",letter);
#if 0 /* What is this number? -- it makes no sense - simplifing */
      if (image_info->number_scenes == 0)
         string="2147483647";
      else if ( image != (Image *) NULL )
        (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
                image_info->scene+image_info->number_scenes);
      else
        string="0";
#else
      (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
        (image_info->number_scenes == 0 ? 2147483647 :
         image_info->number_scenes));
#endif
      break;
    }
    case 'T': /* image time delay for animations */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
        image->delay);
      break;
    }
    case 'U': /* Image resolution units. */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      string=CommandOptionToMnemonic(MagickResolutionOptions,(ssize_t)
        image->units);
      break;
    }
    case 'W': /* layer canvas width */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      (void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
        image->page.width);
      break;
    }
    case 'X': /* layer canvas X offset */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      (void) FormatLocaleString(value,MagickPathExtent,"%+.20g",(double)
        image->page.x);
      break;
    }
    case 'Y': /* layer canvas Y offset */
    {
      WarnNoImageReturn("\"%%%c\"",letter);
      (void) FormatLocaleString(value,MagickPathExtent,"%+.20g",(double)
        image->page.y);
      break;
    }
    case '%': /* percent escaped */
    {
      string="%";
      break;
    }
    case '@': /* Trim bounding box, without actually Trimming! */
    {
      RectangleInfo
        page;

      WarnNoImageReturn("\"%%%c\"",letter);
      page=GetImageBoundingBox(image,exception);
      (void) FormatLocaleString(value,MagickPathExtent,
        "%.20gx%.20g%+.20g%+.20g",(double) page.width,(double) page.height,
        (double) page.x,(double)page.y);
      break;
    }
    case '#':
    {
      /*
        Image signature.
      */
      WarnNoImageReturn("\"%%%c\"",letter);
      if ((image->columns != 0) && (image->rows != 0))
        (void) SignatureImage(image,exception);
      string=GetImageProperty(image,"signature",exception);
      break;
    }
  }
  if (string != (char *) NULL)
    return(string);
  if (*value != '\0')
    {
      /*
        Create a cloned copy of result.
      */
      if (image != (Image *) NULL)
        {
          (void) SetImageArtifact(image,"magick-property",value);
          return(GetImageArtifact(image,"magick-property"));
        }
      else
        {
          (void) SetImageOption(image_info,"magick-property",value);
          return(GetImageOption(image_info,"magick-property"));
        }
    }
  return((char *) NULL);
}

Project: ImageMagick
File: property.c

static MagickBooleanType GetIPTCProperty(const Image *image,const char *key,
  ExceptionInfo *exception)
{
  char
    *attribute,
    *message;

  const StringInfo
    *profile;

  long
    count,
    dataset,
    record;

  ssize_t
    i;

  size_t
    length;

  profile=GetImageProfile(image,"iptc");
  if (profile == (StringInfo *) NULL)
    profile=GetImageProfile(image,"8bim");
  if (profile == (StringInfo *) NULL)
    return(MagickFalse);
  count=sscanf(key,"IPTC:%ld:%ld",&dataset,&record);
  if (count != 2)
    return(MagickFalse);
  attribute=(char *) NULL;
  for (i=0; i < (ssize_t) GetStringInfoLength(profile); i+=(ssize_t) length)
  {
    length=1;
    if ((ssize_t) GetStringInfoDatum(profile)[i] != 0x1c)
      continue;
    length=(size_t) (GetStringInfoDatum(profile)[i+3] << 8);
    length|=GetStringInfoDatum(profile)[i+4];
    if (((long) GetStringInfoDatum(profile)[i+1] == dataset) &&
        ((long) GetStringInfoDatum(profile)[i+2] == record))
      {
        message=(char *) NULL;
        if (~length >= 1)
          message=(char *) AcquireQuantumMemory(length+1UL,sizeof(*message));
        if (message != (char *) NULL)
          {
            (void) CopyMagickString(message,(char *) GetStringInfoDatum(
              profile)+i+5,length+1);
            (void) ConcatenateString(&attribute,message);
            (void) ConcatenateString(&attribute,";");
            message=DestroyString(message);
          }
      }
    i+=5;
  }
  if ((attribute == (char *) NULL) || (*attribute == ';'))
    {
      if (attribute != (char *) NULL)
        attribute=DestroyString(attribute);
      return(MagickFalse);
    }
  attribute[strlen(attribute)-1]='\0';
  (void) SetImageProperty((Image *) image,key,(const char *) attribute,
    exception);
  attribute=DestroyString(attribute);
  return(MagickTrue);
}

Project: ImageMagick
File: property.c

static MagickBooleanType GetXMPProperty(const Image *image,const char *property)
{
  char
    *xmp_profile;

  const char
    *content;

  const StringInfo
    *profile;

  ExceptionInfo
    *exception;

  MagickBooleanType
    status;

  const char
    *p;

  XMLTreeInfo
    *child,
    *description,
    *node,
    *rdf,
    *xmp;

  profile=GetImageProfile(image,"xmp");
  if (profile == (StringInfo *) NULL)
    return(MagickFalse);
  if (GetStringInfoLength(profile) < 17)
    return(MagickFalse);
  if ((property == (const char *) NULL) || (*property == '\0'))
    return(MagickFalse);
  xmp_profile=StringInfoToString(profile);
  if (xmp_profile == (char *) NULL)
    return(MagickFalse);
  for (p=xmp_profile; *p != '\0'; p++)
    if ((*p == '<') && (*(p+1) == 'x'))
      break;
  exception=AcquireExceptionInfo();
  xmp=NewXMLTree((char *) p,exception);
  xmp_profile=DestroyString(xmp_profile);
  exception=DestroyExceptionInfo(exception);
  if (xmp == (XMLTreeInfo *) NULL)
    return(MagickFalse);
  status=MagickFalse;
  rdf=GetXMLTreeChild(xmp,"rdf:RDF");
  if (rdf != (XMLTreeInfo *) NULL)
    {
      if (image->properties == (void *) NULL)
        ((Image *) image)->properties=NewSplayTree(CompareSplayTreeString,
          RelinquishMagickMemory,RelinquishMagickMemory);
      description=GetXMLTreeChild(rdf,"rdf:Description");
      while (description != (XMLTreeInfo *) NULL)
      {
        char
          *xmp_namespace;

        node=GetXMLTreeChild(description,(const char *) NULL);
        while (node != (XMLTreeInfo *) NULL)
        {
          child=GetXMLTreeChild(node,(const char *) NULL);
          content=GetXMLTreeContent(node);
          if ((child == (XMLTreeInfo *) NULL) &&
              (SkipXMPValue(content) == MagickFalse))
            {
              xmp_namespace=ConstantString(GetXMLTreeTag(node));
              (void) SubstituteString(&xmp_namespace,"exif:","xmp:");
              (void) AddValueToSplayTree((SplayTreeInfo *) image->properties,
                xmp_namespace,ConstantString(content));
            }
          while (child != (XMLTreeInfo *) NULL)
          {
            content=GetXMLTreeContent(child);
            if (SkipXMPValue(content) == MagickFalse)
              {
                xmp_namespace=ConstantString(GetXMLTreeTag(node));
                (void) SubstituteString(&xmp_namespace,"exif:","xmp:");
                (void) AddValueToSplayTree((SplayTreeInfo *) image->properties,
                  xmp_namespace,ConstantString(content));
              }
            child=GetXMLTreeSibling(child);
          }
          node=GetXMLTreeSibling(node);
        }
        description=GetNextXMLTreeTag(description);
      }
    }
  xmp=DestroyXMLTree(xmp);
  return(status);
}

Project: ImageMagick
File: property.c

static char *TraceSVGClippath(const unsigned char *blob,size_t length,
  const size_t columns,const size_t rows)
{
  char
    *path,
    *message;

  MagickBooleanType
    in_subpath;

  PointInfo
    first[3],
    last[3],
    point[3];

  ssize_t
    i;

  ssize_t
    knot_count,
    selector,
    x,
    y;

  path=AcquireString((char *) NULL);
  if (path == (char *) NULL)
    return((char *) NULL);
  message=AcquireString((char *) NULL);
  (void) FormatLocaleString(message,MagickPathExtent,(
    "<?xml version=\"1.0\" encoding=\"iso-8859-1\"?>\n"
    "<svg xmlns=\"http://www.w3.org/2000/svg\""
    " width=\"%.20g\" height=\"%.20g\">\n"
    "<g>\n"
    "<path fill-rule=\"evenodd\" style=\"fill:#000000;stroke:#000000;"
    "stroke-width:0;stroke-antialiasing:false\" d=\"\n"),(double) columns,
    (double) rows);
  (void) ConcatenateString(&path,message);
  (void) memset(point,0,sizeof(point));
  (void) memset(first,0,sizeof(first));
  (void) memset(last,0,sizeof(last));
  knot_count=0;
  in_subpath=MagickFalse;
  while (length != 0)
  {
    selector=(ssize_t) ReadPropertyMSBShort(&blob,&length);
    switch (selector)
    {
      case 0:
      case 3:
      {
        if (knot_count != 0)
          {
            blob+=24;
            length-=MagickMin(24,(ssize_t) length);
            break;
          }
        /*
          Expected subpath length record.
        */
        knot_count=(ssize_t) ReadPropertyMSBShort(&blob,&length);
        blob+=22;
        length-=MagickMin(22,(ssize_t) length);
        break;
      }
      case 1:
      case 2:
      case 4:
      case 5:
      {
        if (knot_count == 0)
          {
            /*
              Unexpected subpath knot.
            */
            blob+=24;
            length-=MagickMin(24,(ssize_t) length);
            break;
          }
        /*
          Add sub-path knot
        */
        for (i=0; i < 3; i++)
        {
          y=(ssize_t) ReadPropertyMSBLong(&blob,&length);
          x=(ssize_t) ReadPropertyMSBLong(&blob,&length);
          point[i].x=(double) x*columns/4096.0/4096.0;
          point[i].y=(double) y*rows/4096.0/4096.0;
        }
        if (in_subpath == MagickFalse)
          {
            (void) FormatLocaleString(message,MagickPathExtent,"M %g %g\n",
              point[1].x,point[1].y);
            for (i=0; i < 3; i++)
            {
              first[i]=point[i];
              last[i]=point[i];
            }
          }
        else
          {
            TraceBezierCurve(message,last,point);
            for (i=0; i < 3; i++)
              last[i]=point[i];
          }
        (void) ConcatenateString(&path,message);
        in_subpath=MagickTrue;
        knot_count--;
        /*
          Close the subpath if there are no more knots.
        */
        if (knot_count == 0)
          {
            TraceBezierCurve(message,last,first);
            (void) ConcatenateString(&path,message);
            in_subpath=MagickFalse;
          }
        break;
      }
      case 6:
      case 7:
      case 8:
      default:
      {
        blob+=24;
        length-=MagickMin(24,(ssize_t) length);
        break;
      }
    }
  }
  /*
    Return an empty SVG image if the path does not have knots.
  */
  (void) ConcatenateString(&path,"\"/>\n</g>\n</svg>\n");
  message=DestroyString(message);
  return(path);
}

Project: ImageMagick
File: property.c

MagickExport MagickBooleanType CloneImageProperties(Image *image,
  const Image *clone_image)
{
  assert(image != (Image *) NULL);
  assert(image->signature == MagickCoreSignature);
  if (image->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  assert(clone_image != (const Image *) NULL);
  assert(clone_image->signature == MagickCoreSignature);
  if (clone_image->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      clone_image->filename);
  (void) CopyMagickString(image->filename,clone_image->filename,
    MagickPathExtent);
  (void) CopyMagickString(image->magick_filename,clone_image->magick_filename,
    MagickPathExtent);
  image->compression=clone_image->compression;
  image->quality=clone_image->quality;
  image->depth=clone_image->depth;
  image->matte_color=clone_image->matte_color;
  image->background_color=clone_image->background_color;
  image->border_color=clone_image->border_color;
  image->transparent_color=clone_image->transparent_color;
  image->gamma=clone_image->gamma;
  image->chromaticity=clone_image->chromaticity;
  image->rendering_intent=clone_image->rendering_intent;
  image->black_point_compensation=clone_image->black_point_compensation;
  image->units=clone_image->units;
  image->montage=(char *) NULL;
  image->directory=(char *) NULL;
  (void) CloneString(&image->geometry,clone_image->geometry);
  image->offset=clone_image->offset;
  image->resolution.x=clone_image->resolution.x;
  image->resolution.y=clone_image->resolution.y;
  image->page=clone_image->page;
  image->tile_offset=clone_image->tile_offset;
  image->extract_info=clone_image->extract_info;
  image->filter=clone_image->filter;
  image->fuzz=clone_image->fuzz;
  image->intensity=clone_image->intensity;
  image->interlace=clone_image->interlace;
  image->interpolate=clone_image->interpolate;
  image->endian=clone_image->endian;
  image->gravity=clone_image->gravity;
  image->compose=clone_image->compose;
  image->orientation=clone_image->orientation;
  image->scene=clone_image->scene;
  image->dispose=clone_image->dispose;
  image->delay=clone_image->delay;
  image->ticks_per_second=clone_image->ticks_per_second;
  image->iterations=clone_image->iterations;
  image->total_colors=clone_image->total_colors;
  image->taint=clone_image->taint;
  image->progress_monitor=clone_image->progress_monitor;
  image->client_data=clone_image->client_data;
  image->start_loop=clone_image->start_loop;
  image->error=clone_image->error;
  image->signature=clone_image->signature;
  if (clone_image->properties != (void *) NULL)
    {
      if (image->properties != (void *) NULL)
        DestroyImageProperties(image);
      image->properties=CloneSplayTree((SplayTreeInfo *)
        clone_image->properties,(void *(*)(void *)) ConstantString,
        (void *(*)(void *)) ConstantString);
    }
  return(MagickTrue);
}