/coders/ps.c

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/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%                               PPPP   SSSSS                                  %
%                               P   P  SS                                     %
%                               PPPP    SSS                                   %
%                               P         SS                                  %
%                               P      SSSSS                                  %
%                                                                             %
%                                                                             %
%                         Read/Write Postscript Format                        %
%                                                                             %
%                              Software Design                                %
%                                   Cristy                                    %
%                                 July 1992                                   %
%                                                                             %
%                                                                             %
%  Copyright 1999-2019 ImageMagick Studio LLC, a non-profit organization      %
%  dedicated to making software imaging solutions freely available.           %
%                                                                             %
%  You may not use this file except in compliance with the License.  You may  %
%  obtain a copy of the License at                                            %
%                                                                             %
%    https://imagemagick.org/script/license.php                               %
%                                                                             %
%  Unless required by applicable law or agreed to in writing, software        %
%  distributed under the License is distributed on an "AS IS" BASIS,          %
%  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   %
%  See the License for the specific language governing permissions and        %
%  limitations under the License.                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
*/

/*
  Include declarations.
*/
#include "MagickCore/studio.h"
#include "MagickCore/artifact.h"
#include "MagickCore/attribute.h"
#include "MagickCore/blob.h"
#include "MagickCore/blob-private.h"
#include "MagickCore/cache.h"
#include "MagickCore/color.h"
#include "MagickCore/color-private.h"
#include "MagickCore/colorspace.h"
#include "MagickCore/colorspace-private.h"
#include "MagickCore/constitute.h"
#include "MagickCore/delegate.h"
#include "MagickCore/delegate-private.h"
#include "MagickCore/draw.h"
#include "MagickCore/exception.h"
#include "MagickCore/exception-private.h"
#include "MagickCore/geometry.h"
#include "MagickCore/image.h"
#include "MagickCore/image-private.h"
#include "MagickCore/list.h"
#include "MagickCore/magick.h"
#include "MagickCore/memory_.h"
#include "MagickCore/module.h"
#include "MagickCore/monitor.h"
#include "MagickCore/monitor-private.h"
#include "MagickCore/nt-base-private.h"
#include "MagickCore/option.h"
#include "MagickCore/profile.h"
#include "MagickCore/resource_.h"
#include "MagickCore/pixel-accessor.h"
#include "MagickCore/property.h"
#include "MagickCore/quantum-private.h"
#include "MagickCore/static.h"
#include "MagickCore/string_.h"
#include "MagickCore/timer-private.h"
#include "MagickCore/token.h"
#include "MagickCore/transform.h"
#include "MagickCore/utility.h"

/*
  Forward declarations.
*/
static MagickBooleanType
  WritePSImage(const ImageInfo *,Image *,ExceptionInfo *);

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   I n v o k e P o s t s r i p t D e l e g a t e                             %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  InvokePostscriptDelegate() executes the Postscript interpreter with the
%  specified command.
%
%  The format of the InvokePostscriptDelegate method is:
%
%      MagickBooleanType InvokePostscriptDelegate(
%        const MagickBooleanType verbose,const char *command,
%        ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o verbose: A value other than zero displays the command prior to
%      executing it.
%
%    o command: the address of a character string containing the command to
%      execute.
%
%    o exception: return any errors or warnings in this structure.
%
*/
#if defined(MAGICKCORE_GS_DELEGATE) || defined(MAGICKCORE_WINDOWS_SUPPORT)
static int MagickDLLCall PostscriptDelegateMessage(void *handle,
  const char *message,int length)
{
  char
    **messages;

  ssize_t
    offset;

  offset=0;
  messages=(char **) handle;
  if (*messages == (char *) NULL)
    *messages=(char *) AcquireQuantumMemory((size_t) length+1,sizeof(char *));
  else
    {
      offset=(ssize_t) strlen(*messages);
      *messages=(char *) ResizeQuantumMemory(*messages,(size_t) offset+length+1,
        sizeof(char *));
    }
  if (*messages == (char *) NULL)
    return(0);
  (void) memcpy(*messages+offset,message,(size_t) length);
  (*messages)[length+offset] ='\0';
  return(length);
}
#endif

static MagickBooleanType InvokePostscriptDelegate(
  const MagickBooleanType verbose,const char *command,char *message,
  ExceptionInfo *exception)
{
  int
    status;

#if defined(MAGICKCORE_GS_DELEGATE) || defined(MAGICKCORE_WINDOWS_SUPPORT)
#define SetArgsStart(command,args_start) \
  if (args_start == (const char *) NULL) \
    { \
      if (*command != '"') \
        args_start=strchr(command,' '); \
      else \
        { \
          args_start=strchr(command+1,'"'); \
          if (args_start != (const char *) NULL) \
            args_start++; \
        } \
    }

#define ExecuteGhostscriptCommand(command,status) \
{ \
  status=ExternalDelegateCommand(MagickFalse,verbose,command,message, \
    exception); \
  if (status == 0) \
    return(MagickTrue); \
  if (status < 0) \
    return(MagickFalse); \
  (void) ThrowMagickException(exception,GetMagickModule(),DelegateError, \
    "FailedToExecuteCommand","`%s' (%d)",command,status); \
  return(MagickFalse); \
}

  char
    **argv,
    *errors;

  const char
    *args_start = (const char *) NULL;

  const GhostInfo
    *ghost_info;

  gs_main_instance
    *interpreter;

  gsapi_revision_t
    revision;

  int
    argc,
    code;

  register ssize_t
    i;

#if defined(MAGICKCORE_WINDOWS_SUPPORT)
  ghost_info=NTGhostscriptDLLVectors();
#else
  GhostInfo
    ghost_info_struct;

  ghost_info=(&ghost_info_struct);
  (void) memset(&ghost_info_struct,0,sizeof(ghost_info_struct));
  ghost_info_struct.delete_instance=(void (*)(gs_main_instance *))
    gsapi_delete_instance;
  ghost_info_struct.exit=(int (*)(gs_main_instance *)) gsapi_exit;
  ghost_info_struct.new_instance=(int (*)(gs_main_instance **,void *))
    gsapi_new_instance;
  ghost_info_struct.init_with_args=(int (*)(gs_main_instance *,int,char **))
    gsapi_init_with_args;
  ghost_info_struct.run_string=(int (*)(gs_main_instance *,const char *,int,
    int *)) gsapi_run_string;
  ghost_info_struct.set_stdio=(int (*)(gs_main_instance *,int (*)(void *,char *,
    int),int (*)(void *,const char *,int),int (*)(void *, const char *, int)))
    gsapi_set_stdio;
  ghost_info_struct.revision=(int (*)(gsapi_revision_t *,int)) gsapi_revision;
#endif
  if (ghost_info == (GhostInfo *) NULL)
    ExecuteGhostscriptCommand(command,status);
  if ((ghost_info->revision)(&revision,(int) sizeof(revision)) != 0)
    revision.revision=0;
  if (verbose != MagickFalse)
    {
      (void) fprintf(stdout,"[ghostscript library %.2f]",(double)
        revision.revision/100.0);
      SetArgsStart(command,args_start);
      (void) fputs(args_start,stdout);
    }
  interpreter=(gs_main_instance *) NULL;
  errors=(char *) NULL;
  status=(ghost_info->new_instance)(&interpreter,(void *) &errors);
  if (status < 0)
    ExecuteGhostscriptCommand(command,status);
  code=0;
  argv=StringToArgv(command,&argc);
  if (argv == (char **) NULL)
    {
      (ghost_info->delete_instance)(interpreter);
      return(MagickFalse);
    }
  (void) (ghost_info->set_stdio)(interpreter,(int (MagickDLLCall *)(void *,
    char *,int)) NULL,PostscriptDelegateMessage,PostscriptDelegateMessage);
  status=(ghost_info->init_with_args)(interpreter,argc-1,argv+1);
  if (status == 0)
    status=(ghost_info->run_string)(interpreter,"systemdict /start get exec\n",
      0,&code);
  (ghost_info->exit)(interpreter);
  (ghost_info->delete_instance)(interpreter);
  for (i=0; i < (ssize_t) argc; i++)
    argv[i]=DestroyString(argv[i]);
  argv=(char **) RelinquishMagickMemory(argv);
  if (status != 0)
    {
      SetArgsStart(command,args_start);
      if (status == -101) /* quit */
        (void) FormatLocaleString(message,MagickPathExtent,
          "[ghostscript library %.2f]%s: %s",(double) revision.revision/100.0,
          args_start,errors);
      else
        {
          (void) ThrowMagickException(exception,GetMagickModule(),
            DelegateError,"PostscriptDelegateFailed",
            "`[ghostscript library %.2f]%s': %s",(double) revision.revision/
            100.0,args_start,errors);
          if (errors != (char *) NULL)
            errors=DestroyString(errors);
          (void) LogMagickEvent(CoderEvent,GetMagickModule(),
            "Ghostscript returns status %d, exit code %d",status,code);
          return(MagickFalse);
        }
    }
  if (errors != (char *) NULL)
    errors=DestroyString(errors);
  return(MagickTrue);
#else
  status=ExternalDelegateCommand(MagickFalse,verbose,command,message,exception);
  return(status == 0 ? MagickTrue : MagickFalse);
#endif
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   I s P S                                                                   %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  IsPS() returns MagickTrue if the image format type, identified by the
%  magick string, is PS.
%
%  The format of the IsPS method is:
%
%      MagickBooleanType IsPS(const unsigned char *magick,const size_t length)
%
%  A description of each parameter follows:
%
%    o magick: compare image format pattern against these bytes.
%
%    o length: Specifies the length of the magick string.
%
*/
static MagickBooleanType IsPS(const unsigned char *magick,const size_t length)
{
  if (length < 4)
    return(MagickFalse);
  if (memcmp(magick,"%!",2) == 0)
    return(MagickTrue);
  if (memcmp(magick,"\004%!",3) == 0)
    return(MagickTrue);
  return(MagickFalse);
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d P S I m a g e                                                     %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadPSImage() reads a Postscript image file and returns it.  It allocates
%  the memory necessary for the new Image structure and returns a pointer
%  to the new image.
%
%  The format of the ReadPSImage method is:
%
%      Image *ReadPSImage(const ImageInfo *image_info,ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image_info: the image info.
%
%    o exception: return any errors or warnings in this structure.
%
*/

static MagickBooleanType IsPostscriptRendered(const char *path)
{
  MagickBooleanType
    status;

  struct stat
    attributes;

  if ((path == (const char *) NULL) || (*path == '\0'))
    return(MagickFalse);
  status=GetPathAttributes(path,&attributes);
  if ((status != MagickFalse) && S_ISREG(attributes.st_mode) &&
      (attributes.st_size > 0))
    return(MagickTrue);
  return(MagickFalse);
}

static inline int ProfileInteger(Image *image,short int *hex_digits)
{
  int
    c,
    l,
    value;

  register ssize_t
    i;

  l=0;
  value=0;
  for (i=0; i < 2; )
  {
    c=ReadBlobByte(image);
    if ((c == EOF) || ((c == '%') && (l == '%')))
      {
        value=(-1);
        break;
      }
    l=c;
    c&=0xff;
    if (isxdigit(c) == MagickFalse)
      continue;
    value=(int) ((size_t) value << 4)+hex_digits[c];
    i++;
  }
  return(value);
}

static Image *ReadPSImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
#define BoundingBox  "BoundingBox:"
#define BeginDocument  "BeginDocument:"
#define BeginXMPPacket  "<?xpacket begin="
#define EndXMPPacket  "<?xpacket end="
#define ICCProfile "BeginICCProfile:"
#define CMYKCustomColor  "CMYKCustomColor:"
#define CMYKProcessColor  "CMYKProcessColor:"
#define DocumentMedia  "DocumentMedia:"
#define DocumentCustomColors  "DocumentCustomColors:"
#define DocumentProcessColors  "DocumentProcessColors:"
#define EndDocument  "EndDocument:"
#define HiResBoundingBox  "HiResBoundingBox:"
#define ImageData  "ImageData:"
#define PageBoundingBox  "PageBoundingBox:"
#define LanguageLevel  "LanguageLevel:"
#define PageMedia  "PageMedia:"
#define Pages  "Pages:"
#define PhotoshopProfile  "BeginPhotoshop:"
#define PostscriptLevel  "!PS-"
#define RenderPostscriptText  "  Rendering Postscript...  "
#define SpotColor  "+ "

  char
    command[MagickPathExtent],
    *density,
    filename[MagickPathExtent],
    geometry[MagickPathExtent],
    input_filename[MagickPathExtent],
    message[MagickPathExtent],
    *options,
    postscript_filename[MagickPathExtent];

  const char
    *option;

  const DelegateInfo
    *delegate_info;

  GeometryInfo
    geometry_info;

  Image
    *image,
    *next,
    *postscript_image;

  ImageInfo
    *read_info;

  int
    c,
    file;

  MagickBooleanType
    cmyk,
    fitPage,
    skip,
    status;

  MagickStatusType
    flags;

  PointInfo
    delta,
    resolution;

  RectangleInfo
    page;

  register char
    *p;

  register ssize_t
    i;

  SegmentInfo
    bounds,
    hires_bounds;

  short int
    hex_digits[256];

  size_t
    length;

  ssize_t
    count,
    priority;

  StringInfo
    *profile;

  unsigned long
    columns,
    extent,
    language_level,
    pages,
    rows,
    scene,
    spotcolor;

  /*
    Open image file.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickCoreSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickCoreSignature);
  image=AcquireImage(image_info,exception);
  status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
  if (status == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  status=AcquireUniqueSymbolicLink(image_info->filename,input_filename);
  if (status == MagickFalse)
    {
      ThrowFileException(exception,FileOpenError,"UnableToCreateTemporaryFile",
        image_info->filename);
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  /*
    Initialize hex values.
  */
  (void) memset(hex_digits,0,sizeof(hex_digits));
  hex_digits[(int) '0']=0;
  hex_digits[(int) '1']=1;
  hex_digits[(int) '2']=2;
  hex_digits[(int) '3']=3;
  hex_digits[(int) '4']=4;
  hex_digits[(int) '5']=5;
  hex_digits[(int) '6']=6;
  hex_digits[(int) '7']=7;
  hex_digits[(int) '8']=8;
  hex_digits[(int) '9']=9;
  hex_digits[(int) 'a']=10;
  hex_digits[(int) 'b']=11;
  hex_digits[(int) 'c']=12;
  hex_digits[(int) 'd']=13;
  hex_digits[(int) 'e']=14;
  hex_digits[(int) 'f']=15;
  hex_digits[(int) 'A']=10;
  hex_digits[(int) 'B']=11;
  hex_digits[(int) 'C']=12;
  hex_digits[(int) 'D']=13;
  hex_digits[(int) 'E']=14;
  hex_digits[(int) 'F']=15;
  /*
    Set the page density.
  */
  delta.x=DefaultResolution;
  delta.y=DefaultResolution;
  if ((image->resolution.x == 0.0) || (image->resolution.y == 0.0))
    {
      flags=ParseGeometry(PSDensityGeometry,&geometry_info);
      image->resolution.x=geometry_info.rho;
      image->resolution.y=geometry_info.sigma;
      if ((flags & SigmaValue) == 0)
        image->resolution.y=image->resolution.x;
    }
  if (image_info->density != (char *) NULL)
    {
      flags=ParseGeometry(image_info->density,&geometry_info);
      image->resolution.x=geometry_info.rho;
      image->resolution.y=geometry_info.sigma;
      if ((flags & SigmaValue) == 0)
        image->resolution.y=image->resolution.x;
    }
  (void) ParseAbsoluteGeometry(PSPageGeometry,&page);
  if (image_info->page != (char *) NULL)
    (void) ParseAbsoluteGeometry(image_info->page,&page);
  resolution=image->resolution;
  page.width=(size_t) ceil((double) (page.width*resolution.x/delta.x)-0.5);
  page.height=(size_t) ceil((double) (page.height*resolution.y/delta.y)-0.5);
  /*
    Determine page geometry from the Postscript bounding box.
  */
  (void) memset(&bounds,0,sizeof(bounds));
  (void) memset(command,0,sizeof(command));
  cmyk=image_info->colorspace == CMYKColorspace ? MagickTrue : MagickFalse;
  (void) memset(&hires_bounds,0,sizeof(hires_bounds));
  columns=0;
  rows=0;
  priority=0;
  rows=0;
  extent=0;
  spotcolor=0;
  language_level=1;
  pages=(~0UL);
  skip=MagickFalse;
  p=command;
  for (c=ReadBlobByte(image); c != EOF; c=ReadBlobByte(image))
  {
    /*
      Note document structuring comments.
    */
    *p++=(char) c;
    if ((strchr("\n\r%",c) == (char *) NULL) &&
        ((size_t) (p-command) < (MagickPathExtent-1)))
      continue;
    *p='\0';
    p=command;
    /*
      Skip %%BeginDocument thru %%EndDocument.
    */
    if (LocaleNCompare(BeginDocument,command,strlen(BeginDocument)) == 0)
      skip=MagickTrue;
    if (LocaleNCompare(EndDocument,command,strlen(EndDocument)) == 0)
      skip=MagickFalse;
    if (skip != MagickFalse)
      continue;
    if (LocaleNCompare(PostscriptLevel,command,strlen(PostscriptLevel)) == 0)
      {
        (void) SetImageProperty(image,"ps:Level",command+4,exception);
        if (GlobExpression(command,"*EPSF-*",MagickTrue) != MagickFalse)
          pages=1;
      }
    if (LocaleNCompare(LanguageLevel,command,strlen(LanguageLevel)) == 0)
      (void) sscanf(command,LanguageLevel " %lu",&language_level);
    if (LocaleNCompare(Pages,command,strlen(Pages)) == 0)
      (void) sscanf(command,Pages " %lu",&pages);
    if (LocaleNCompare(ImageData,command,strlen(ImageData)) == 0)
      (void) sscanf(command,ImageData " %lu %lu",&columns,&rows);
    /*
      Is this a CMYK document?
    */
    length=strlen(DocumentProcessColors);
    if (LocaleNCompare(DocumentProcessColors,command,length) == 0)
      {
        if ((GlobExpression(command,"*Cyan*",MagickTrue) != MagickFalse) ||
            (GlobExpression(command,"*Magenta*",MagickTrue) != MagickFalse) ||
            (GlobExpression(command,"*Yellow*",MagickTrue) != MagickFalse))
          cmyk=MagickTrue;
      }
    if (LocaleNCompare(CMYKCustomColor,command,strlen(CMYKCustomColor)) == 0)
      cmyk=MagickTrue;
    if (LocaleNCompare(CMYKProcessColor,command,strlen(CMYKProcessColor)) == 0)
      cmyk=MagickTrue;
    length=strlen(DocumentCustomColors);
    if ((LocaleNCompare(DocumentCustomColors,command,length) == 0) ||
        (LocaleNCompare(CMYKCustomColor,command,strlen(CMYKCustomColor)) == 0) ||
        (LocaleNCompare(SpotColor,command,strlen(SpotColor)) == 0))
      {
        char
          property[MagickPathExtent],
          *value;

        register char
          *q;

        /*
          Note spot names.
        */
        (void) FormatLocaleString(property,MagickPathExtent,
          "ps:SpotColor-%.20g",(double) (spotcolor++));
        for (q=command; *q != '\0'; q++)
          if (isspace((int) (unsigned char) *q) != 0)
            break;
        value=ConstantString(q);
        (void) SubstituteString(&value,"(","");
        (void) SubstituteString(&value,")","");
        (void) StripString(value);
        if (*value != '\0')
          (void) SetImageProperty(image,property,value,exception);
        value=DestroyString(value);
        continue;
      }
    if (image_info->page != (char *) NULL)
      continue;
    /*
      Note region defined by bounding box.
    */
    count=0;
    i=0;
    if (LocaleNCompare(BoundingBox,command,strlen(BoundingBox)) == 0)
      {
        count=(ssize_t) sscanf(command,BoundingBox " %lf %lf %lf %lf",
          &bounds.x1,&bounds.y1,&bounds.x2,&bounds.y2);
        i=2;
      }
    if (LocaleNCompare(DocumentMedia,command,strlen(DocumentMedia)) == 0)
      {
        count=(ssize_t) sscanf(command,DocumentMedia " %lf %lf %lf %lf",
          &bounds.x1,&bounds.y1,&bounds.x2,&bounds.y2);
        i=1;
      }
    if (LocaleNCompare(HiResBoundingBox,command,strlen(HiResBoundingBox)) == 0)
      {
        count=(ssize_t) sscanf(command,HiResBoundingBox " %lf %lf %lf %lf",
          &bounds.x1,&bounds.y1,&bounds.x2,&bounds.y2);
        i=3;
      }
    if (LocaleNCompare(PageBoundingBox,command,strlen(PageBoundingBox)) == 0)
      {
        count=(ssize_t) sscanf(command,PageBoundingBox " %lf %lf %lf %lf",
          &bounds.x1,&bounds.y1,&bounds.x2,&bounds.y2);
        i=1;
      }
    if (LocaleNCompare(PageMedia,command,strlen(PageMedia)) == 0)
      {
        count=(ssize_t) sscanf(command,PageMedia " %lf %lf %lf %lf",
          &bounds.x1,&bounds.y1,&bounds.x2,&bounds.y2);
        i=1;
      }
    if ((count != 4) || (i < (ssize_t) priority))
      continue;
    if ((fabs(bounds.x2-bounds.x1) <= fabs(hires_bounds.x2-hires_bounds.x1)) ||
        (fabs(bounds.y2-bounds.y1) <= fabs(hires_bounds.y2-hires_bounds.y1)))
      if (i ==  (ssize_t) priority)
        continue;
    hires_bounds=bounds;
    priority=i;
  }
  if ((fabs(hires_bounds.x2-hires_bounds.x1) >= MagickEpsilon) &&
      (fabs(hires_bounds.y2-hires_bounds.y1) >= MagickEpsilon))
    {
      /*
        Set Postscript render geometry.
      */
      (void) FormatLocaleString(geometry,MagickPathExtent,"%gx%g%+.15g%+.15g",
        hires_bounds.x2-hires_bounds.x1,hires_bounds.y2-hires_bounds.y1,
        hires_bounds.x1,hires_bounds.y1);
      (void) SetImageProperty(image,"ps:HiResBoundingBox",geometry,exception);
      page.width=(size_t) ceil((double) ((hires_bounds.x2-hires_bounds.x1)*
        resolution.x/delta.x)-0.5);
      page.height=(size_t) ceil((double) ((hires_bounds.y2-hires_bounds.y1)*
        resolution.y/delta.y)-0.5);
    }
  fitPage=MagickFalse;
  option=GetImageOption(image_info,"eps:fit-page");
  if (option != (char *) NULL)
    {
      char
        *page_geometry;

      page_geometry=GetPageGeometry(option);
      flags=ParseMetaGeometry(page_geometry,&page.x,&page.y,&page.width,
        &page.height);
      if (flags == NoValue)
        {
          (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
            "InvalidGeometry","`%s'",option);
          image=DestroyImage(image);
          return((Image *) NULL);
        }
      page.width=(size_t) ceil((double) (page.width*image->resolution.x/delta.x)
        -0.5);
      page.height=(size_t) ceil((double) (page.height*image->resolution.y/
        delta.y) -0.5);
      page_geometry=DestroyString(page_geometry);
      fitPage=MagickTrue;
    }
  if (IssRGBCompatibleColorspace(image_info->colorspace) != MagickFalse)
    cmyk=MagickFalse;
  /*
    Create Ghostscript control file.
  */
  file=AcquireUniqueFileResource(postscript_filename);
  if (file == -1)
    {
      ThrowFileException(exception,FileOpenError,"UnableToOpenFile",
        image_info->filename);
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  (void) CopyMagickString(command,"/setpagedevice {pop} bind 1 index where {"
    "dup wcheck {3 1 roll put} {pop def} ifelse} {def} ifelse\n"
    "<</UseCIEColor true>>setpagedevice\n",MagickPathExtent);
  count=write(file,command,(unsigned int) strlen(command));
  if (image_info->page == (char *) NULL)
    {
      char
        translate_geometry[MagickPathExtent];

      (void) FormatLocaleString(translate_geometry,MagickPathExtent,
        "%g %g translate\n",-bounds.x1,-bounds.y1);
      count=write(file,translate_geometry,(unsigned int)
        strlen(translate_geometry));
    }
  file=close(file)-1;
  /*
    Render Postscript with the Ghostscript delegate.
  */
  if (image_info->monochrome != MagickFalse)
    delegate_info=GetDelegateInfo("ps:mono",(char *) NULL,exception);
  else
    if (cmyk != MagickFalse)
      delegate_info=GetDelegateInfo("ps:cmyk",(char *) NULL,exception);
    else
      delegate_info=GetDelegateInfo("ps:alpha",(char *) NULL,exception);
  if (delegate_info == (const DelegateInfo *) NULL)
    {
      (void) RelinquishUniqueFileResource(postscript_filename);
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  density=AcquireString("");
  options=AcquireString("");
  (void) FormatLocaleString(density,MagickPathExtent,"%gx%g",resolution.x,
    resolution.y);
  (void) FormatLocaleString(options,MagickPathExtent,"-g%.20gx%.20g ",(double)
    page.width,(double) page.height);
  read_info=CloneImageInfo(image_info);
  *read_info->magick='\0';
  if (read_info->number_scenes != 0)
    {
      char
        pages[MagickPathExtent];

      (void) FormatLocaleString(pages,MagickPathExtent,"-dFirstPage=%.20g "
        "-dLastPage=%.20g ",(double) read_info->scene+1,(double)
        (read_info->scene+read_info->number_scenes));
      (void) ConcatenateMagickString(options,pages,MagickPathExtent);
      read_info->number_scenes=0;
      if (read_info->scenes != (char *) NULL)
        *read_info->scenes='\0';
    }
  if (*image_info->magick == 'E')
    {
      option=GetImageOption(image_info,"eps:use-cropbox");
      if ((option == (const char *) NULL) ||
          (IsStringTrue(option) != MagickFalse))
        (void) ConcatenateMagickString(options,"-dEPSCrop ",MagickPathExtent);
      if (fitPage != MagickFalse)
        (void) ConcatenateMagickString(options,"-dEPSFitPage ",
          MagickPathExtent);
    }
  (void) CopyMagickString(filename,read_info->filename,MagickPathExtent);
  (void) AcquireUniqueFilename(filename);
  (void) RelinquishUniqueFileResource(filename);
  (void) ConcatenateMagickString(filename,"%d",MagickPathExtent);
  (void) FormatLocaleString(command,MagickPathExtent,
    GetDelegateCommands(delegate_info),
    read_info->antialias != MagickFalse ? 4 : 1,
    read_info->antialias != MagickFalse ? 4 : 1,density,options,filename,
    postscript_filename,input_filename);
  options=DestroyString(options);
  density=DestroyString(density);
  *message='\0';
  status=InvokePostscriptDelegate(read_info->verbose,command,message,exception);
  (void) InterpretImageFilename(image_info,image,filename,1,
    read_info->filename,exception);
  if ((status == MagickFalse) ||
      (IsPostscriptRendered(read_info->filename) == MagickFalse))
    {
      (void) ConcatenateMagickString(command," -c showpage",MagickPathExtent);
      status=InvokePostscriptDelegate(read_info->verbose,command,message,
        exception);
    }
  (void) RelinquishUniqueFileResource(postscript_filename);
  (void) RelinquishUniqueFileResource(input_filename);
  postscript_image=(Image *) NULL;
  if (status == MagickFalse)
    for (i=1; ; i++)
    {
      (void) InterpretImageFilename(image_info,image,filename,(int) i,
        read_info->filename,exception);
      if (IsPostscriptRendered(read_info->filename) == MagickFalse)
        break;
      (void) RelinquishUniqueFileResource(read_info->filename);
    }
  else
    for (i=1; ; i++)
    {
      (void) InterpretImageFilename(image_info,image,filename,(int) i,
        read_info->filename,exception);
      if (IsPostscriptRendered(read_info->filename) == MagickFalse)
        break;
      read_info->blob=NULL;
      read_info->length=0;
      next=ReadImage(read_info,exception);
      (void) RelinquishUniqueFileResource(read_info->filename);
      if (next == (Image *) NULL)
        break;
      AppendImageToList(&postscript_image,next);
    }
  (void) RelinquishUniqueFileResource(read_info->filename);
  read_info=DestroyImageInfo(read_info);
  if (postscript_image == (Image *) NULL)
    {
      if (*message != '\0')
        (void) ThrowMagickException(exception,GetMagickModule(),
          DelegateError,"PostscriptDelegateFailed","`%s'",message);
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  if (LocaleCompare(postscript_image->magick,"BMP") == 0)
    {
      Image
        *cmyk_image;

      cmyk_image=ConsolidateCMYKImages(postscript_image,exception);
      if (cmyk_image != (Image *) NULL)
        {
          postscript_image=DestroyImageList(postscript_image);
          postscript_image=cmyk_image;
        }
    }
  (void) SeekBlob(image,0,SEEK_SET);
  for (c=ReadBlobByte(image); c != EOF; c=ReadBlobByte(image))
  {
    /*
      Note document structuring comments.
    */
    *p++=(char) c;
    if ((strchr("\n\r%",c) == (char *) NULL) &&
        ((size_t) (p-command) < (MagickPathExtent-1)))
      continue;
    *p='\0';
    p=command;
    /*
      Skip %%BeginDocument thru %%EndDocument.
    */
    if (LocaleNCompare(BeginDocument,command,strlen(BeginDocument)) == 0)
      skip=MagickTrue;
    if (LocaleNCompare(EndDocument,command,strlen(EndDocument)) == 0)
      skip=MagickFalse;
    if (skip != MagickFalse)
      continue;
    if (LocaleNCompare(ICCProfile,command,strlen(ICCProfile)) == 0)
      {
        unsigned char
          *datum;

        /*
          Read ICC profile.
        */
        profile=AcquireStringInfo(MagickPathExtent);
        datum=GetStringInfoDatum(profile);
        for (i=0; (c=ProfileInteger(image,hex_digits)) != EOF; i++)
        {
          if (i >= (ssize_t) GetStringInfoLength(profile))
            {
              SetStringInfoLength(profile,(size_t) i << 1);
              datum=GetStringInfoDatum(profile);
            }
          datum[i]=(unsigned char) c;
        }
        SetStringInfoLength(profile,(size_t) i+1);
        (void) SetImageProfile(image,"icc",profile,exception);
        profile=DestroyStringInfo(profile);
        continue;
      }
    if (LocaleNCompare(PhotoshopProfile,command,strlen(PhotoshopProfile)) == 0)
      {
        unsigned char
          *q;

        /*
          Read Photoshop profile.
        */
        count=(ssize_t) sscanf(command,PhotoshopProfile " %lu",&extent);
        if (count != 1)
          continue;
        length=extent;
        if ((MagickSizeType) length > GetBlobSize(image))
          ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile");
        profile=BlobToStringInfo((const void *) NULL,length);
        if (profile != (StringInfo *) NULL)
          {
            q=GetStringInfoDatum(profile);
            for (i=0; i < (ssize_t) length; i++)
              *q++=(unsigned char) ProfileInteger(image,hex_digits);
            (void) SetImageProfile(image,"8bim",profile,exception);
            profile=DestroyStringInfo(profile);
          }
        continue;
      }
    if (LocaleNCompare(BeginXMPPacket,command,strlen(BeginXMPPacket)) == 0)
      {
        /*
          Read XMP profile.
        */
        p=command;
        profile=StringToStringInfo(command);
        for (i=(ssize_t) GetStringInfoLength(profile)-1; c != EOF; i++)
        {
          SetStringInfoLength(profile,(size_t) (i+1));
          c=ReadBlobByte(image);
          GetStringInfoDatum(profile)[i]=(unsigned char) c;
          *p++=(char) c;
          if ((strchr("\n\r%",c) == (char *) NULL) &&
              ((size_t) (p-command) < (MagickPathExtent-1)))
            continue;
          *p='\0';
          p=command;
          if (LocaleNCompare(EndXMPPacket,command,strlen(EndXMPPacket)) == 0)
            break;
        }
        SetStringInfoLength(profile,(size_t) i);
        (void) SetImageProfile(image,"xmp",profile,exception);
        profile=DestroyStringInfo(profile);
        continue;
      }
  }
  (void) CloseBlob(image);
  if (image_info->number_scenes != 0)
    {
      Image
        *clone_image;

      /*
        Add place holder images to meet the subimage specification requirement.
      */
      for (i=0; i < (ssize_t) image_info->scene; i++)
      {
        clone_image=CloneImage(postscript_image,1,1,MagickTrue,exception);
        if (clone_image != (Image *) NULL)
          PrependImageToList(&postscript_image,clone_image);
      }
    }
  do
  {
    (void) CopyMagickString(postscript_image->filename,filename,
      MagickPathExtent);
    (void) CopyMagickString(postscript_image->magick,image->magick,
      MagickPathExtent);
    if (columns != 0)
      postscript_image->magick_columns=columns;
    if (rows != 0)
      postscript_image->magick_rows=rows;
    postscript_image->page=page;
    (void) CloneImageProfiles(postscript_image,image);
    (void) CloneImageProperties(postscript_image,image);
    next=SyncNextImageInList(postscript_image);
    if (next != (Image *) NULL)
      postscript_image=next;
  } while (next != (Image *) NULL);
  image=DestroyImageList(image);
  scene=0;
  for (next=GetFirstImageInList(postscript_image); next != (Image *) NULL; )
  {
    next->scene=scene++;
    next=GetNextImageInList(next);
  }
  return(GetFirstImageInList(postscript_image));
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e g i s t e r P S I m a g e                                             %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  RegisterPSImage() adds properties for the PS image format to
%  the list of supported formats.  The properties include the image format
%  tag, a method to read and/or write the format, whether the format
%  supports the saving of more than one frame to the same file or blob,
%  whether the format supports native in-memory I/O, and a brief
%  description of the format.
%
%  The format of the RegisterPSImage method is:
%
%      size_t RegisterPSImage(void)
%
*/
ModuleExport size_t RegisterPSImage(void)
{
  MagickInfo
    *entry;

  entry=AcquireMagickInfo("PS","EPI",
    "Encapsulated PostScript Interchange format");
  entry->decoder=(DecodeImageHandler *) ReadPSImage;
  entry->encoder=(EncodeImageHandler *) WritePSImage;
  entry->magick=(IsImageFormatHandler *) IsPS;
  entry->flags|=CoderDecoderSeekableStreamFlag;
  entry->flags^=CoderAdjoinFlag;
  entry->flags^=CoderBlobSupportFlag;
  entry->mime_type=ConstantString("application/postscript");
  (void) RegisterMagickInfo(entry);
  entry=AcquireMagickInfo("PS","EPS","Encapsulated PostScript");
  entry->decoder=(DecodeImageHandler *) ReadPSImage;
  entry->encoder=(EncodeImageHandler *) WritePSImage;
  entry->magick=(IsImageFormatHandler *) IsPS;
  entry->flags|=CoderDecoderSeekableStreamFlag;
  entry->flags^=CoderAdjoinFlag;
  entry->flags^=CoderBlobSupportFlag;
  entry->mime_type=ConstantString("application/postscript");
  (void) RegisterMagickInfo(entry);
  entry=AcquireMagickInfo("PS","EPSF","Encapsulated PostScript");
  entry->decoder=(DecodeImageHandler *) ReadPSImage;
  entry->encoder=(EncodeImageHandler *) WritePSImage;
  entry->magick=(IsImageFormatHandler *) IsPS;
  entry->flags|=CoderDecoderSeekableStreamFlag;
  entry->flags^=CoderAdjoinFlag;
  entry->flags^=CoderBlobSupportFlag;
  entry->mime_type=ConstantString("application/postscript");
  (void) RegisterMagickInfo(entry);
  entry=AcquireMagickInfo("PS","EPSI",
    "Encapsulated PostScript Interchange format");
  entry->decoder=(DecodeImageHandler *) ReadPSImage;
  entry->encoder=(EncodeImageHandler *) WritePSImage;
  entry->magick=(IsImageFormatHandler *) IsPS;
  entry->flags|=CoderDecoderSeekableStreamFlag;
  entry->flags^=CoderAdjoinFlag;
  entry->flags^=CoderBlobSupportFlag;
  entry->mime_type=ConstantString("application/postscript");
  (void) RegisterMagickInfo(entry);
  entry=AcquireMagickInfo("PS","PS","PostScript");
  entry->decoder=(DecodeImageHandler *) ReadPSImage;
  entry->encoder=(EncodeImageHandler *) WritePSImage;
  entry->magick=(IsImageFormatHandler *) IsPS;
  entry->mime_type=ConstantString("application/postscript");
  entry->flags|=CoderDecoderSeekableStreamFlag;
  entry->flags^=CoderBlobSupportFlag;
  (void) RegisterMagickInfo(entry);
  return(MagickImageCoderSignature);
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   U n r e g i s t e r P S I m a g e                                         %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  UnregisterPSImage() removes format registrations made by the
%  PS module from the list of supported formats.
%
%  The format of the UnregisterPSImage method is:
%
%      UnregisterPSImage(void)
%
*/
ModuleExport void UnregisterPSImage(void)
{
  (void) UnregisterMagickInfo("EPI");
  (void) UnregisterMagickInfo("EPS");
  (void) UnregisterMagickInfo("EPSF");
  (void) UnregisterMagickInfo("EPSI");
  (void) UnregisterMagickInfo("PS");
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   W r i t e P S I m a g e                                                   %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  WritePSImage translates an image to encapsulated Postscript
%  Level I for printing.  If the supplied geometry is null, the image is
%  centered on the Postscript page.  Otherwise, the image is positioned as
%  specified by the geometry.
%
%  The format of the WritePSImage method is:
%
%      MagickBooleanType WritePSImage(const ImageInfo *image_info,
%        Image *image,ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image_info: the image info.
%
%    o image: the image.
%
%    o exception: return any errors or warnings in this structure.
%
*/

static inline unsigned char *PopHexPixel(const char hex_digits[][3],
  const size_t pixel,unsigned char *pixels)
{
  register const char
    *hex;

  hex=hex_digits[pixel];
  *pixels++=(unsigned char) (*hex++ & 0xff);
  *pixels++=(unsigned char) (*hex & 0xff);
  return(pixels);
}

static MagickBooleanType WritePSImage(const ImageInfo *image_info,Image *image,
  ExceptionInfo *exception)
{
#define WriteRunlengthPacket(image,pixel,length,p) \
{ \
  if ((image->alpha_trait != UndefinedPixelTrait) && (length != 0) && \
      (GetPixelAlpha(image,p) == (Quantum) TransparentAlpha)) \
    { \
      q=PopHexPixel(hex_digits,0xff,q); \
      q=PopHexPixel(hex_digits,0xff,q); \
      q=PopHexPixel(hex_digits,0xff,q); \
    } \
  else \
    { \
      q=PopHexPixel(hex_digits,ScaleQuantumToChar(ClampToQuantum(pixel.red)),q); \
      q=PopHexPixel(hex_digits,ScaleQuantumToChar(ClampToQuantum(pixel.green)),q); \
      q=PopHexPixel(hex_digits,ScaleQuantumToChar(ClampToQuantum(pixel.blue)),q); \
    } \
  q=PopHexPixel(hex_digits,(size_t) MagickMin(length,0xff),q); \
}

  static const char
    hex_digits[][3] =
    {
      "00", "01", "02", "03", "04", "05", "06", "07", "08", "09", "0A", "0B",
      "0C", "0D", "0E", "0F", "10", "11", "12", "13", "14", "15", "16", "17",
      "18", "19", "1A", "1B", "1C", "1D", "1E", "1F", "20", "21", "22", "23",
      "24", "25", "26", "27", "28", "29", "2A", "2B", "2C", "2D", "2E", "2F",
      "30", "31", "32", "33", "34", "35", "36", "37", "38", "39", "3A", "3B",
      "3C", "3D", "3E", "3F", "40", "41", "42", "43", "44", "45", "46", "47",
      "48", "49", "4A", "4B", "4C", "4D", "4E", "4F", "50", "51", "52", "53",
      "54", "55", "56", "57", "58", "59", "5A", "5B", "5C", "5D", "5E", "5F",
      "60", "61", "62", "63", "64", "65", "66", "67", "68", "69", "6A", "6B",
      "6C", "6D", "6E", "6F", "70", "71", "72", "73", "74", "75", "76", "77",
      "78", "79", "7A", "7B", "7C", "7D", "7E", "7F", "80", "81", "82", "83",
      "84", "85", "86", "87", "88", "89", "8A", "8B", "8C", "8D", "8E", "8F",
      "90", "91", "92", "93", "94", "95", "96", "97", "98", "99", "9A", "9B",
      "9C", "9D", "9E", "9F", "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7",
      "A8", "A9", "AA", "AB", "AC", "AD", "AE", "AF", "B0", "B1", "B2", "B3",
      "B4", "B5", "B6", "B7", "B8", "B9", "BA", "BB", "BC", "BD", "BE", "BF",
      "C0", "C1", "C2", "C3", "C4", "C5", "C6", "C7", "C8", "C9", "CA", "CB",
      "CC", "CD", "CE", "CF", "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
      "D8", "D9", "DA", "DB", "DC", "DD", "DE", "DF", "E0", "E1", "E2", "E3",
      "E4", "E5", "E6", "E7", "E8", "E9", "EA", "EB", "EC", "ED", "EE", "EF",
      "F0", "F1", "F2", "F3", "F4", "F5", "F6", "F7", "F8", "F9", "FA", "FB",
      "FC", "FD", "FE", "FF"
    },
    PostscriptProlog[] =
      "%%BeginProlog\n"
      "%\n"
      "% Display a color image.  The image is displayed in color on\n"
      "% Postscript viewers or printers that support color, otherwise\n"
      "% it is displayed as grayscale.\n"
      "%\n"
      "/DirectClassPacket\n"
      "{\n"
      "  %\n"
      "  % Get a DirectClass packet.\n"
      "  %\n"
      "  % Parameters:\n"
      "  %   red.\n"
      "  %   green.\n"
      "  %   blue.\n"
      "  %   length: number of pixels minus one of this color (optional).\n"
      "  %\n"
      "  currentfile color_packet readhexstring pop pop\n"
      "  compression 0 eq\n"
      "  {\n"
      "    /number_pixels 3 def\n"
      "  }\n"
      "  {\n"
      "    currentfile byte readhexstring pop 0 get\n"
      "    /number_pixels exch 1 add 3 mul def\n"
      "  } ifelse\n"
      "  0 3 number_pixels 1 sub\n"
      "  {\n"
      "    pixels exch color_packet putinterval\n"
      "  } for\n"
      "  pixels 0 number_pixels getinterval\n"
      "} bind def\n"
      "\n"
      "/DirectClassImage\n"
      "{\n"
      "  %\n"
      "  % Display a DirectClass image.\n"
      "  %\n"
      "  systemdict /colorimage known\n"
      "  {\n"
      "    columns rows 8\n"
      "    [\n"
      "      columns 0 0\n"
      "      rows neg 0 rows\n"
      "    ]\n"
      "    { DirectClassPacket } false 3 colorimage\n"
      "  }\n"
      "  {\n"
      "    %\n"
      "    % No colorimage operator;  convert to grayscale.\n"
      "    %\n"
      "    columns rows 8\n"
      "    [\n"
      "      columns 0 0\n"
      "      rows neg 0 rows\n"
      "    ]\n"
      "    { GrayDirectClassPacket } image\n"
      "  } ifelse\n"
      "} bind def\n"
      "\n"
      "/GrayDirectClassPacket\n"
      "{\n"
      "  %\n"
      "  % Get a DirectClass packet;  convert to grayscale.\n"
      "  %\n"
      "  % Parameters:\n"
      "  %   red\n"
      "  %   green\n"
      "  %   blue\n"
      "  %   length: number of pixels minus one of this color (optional).\n"
      "  %\n"
      "  currentfile color_packet readhexstring pop pop\n"
      "  color_packet 0 get 0.299 mul\n"
      "  color_packet 1 get 0.587 mul add\n"
      "  color_packet 2 get 0.114 mul add\n"
      "  cvi\n"
      "  /gray_packet exch def\n"
      "  compression 0 eq\n"
      "  {\n"
      "    /number_pixels 1 def\n"
      "  }\n"
      "  {\n"
      "    currentfile byte readhexstring pop 0 get\n"
      "    /number_pixels exch 1 add def\n"
      "  } ifelse\n"
      "  0 1 number_pixels 1 sub\n"
      "  {\n"
      "    pixels exch gray_packet put\n"
      "  } for\n"
      "  pixels 0 number_pixels getinterval\n"
      "} bind def\n"
      "\n"
      "/GrayPseudoClassPacket\n"
      "{\n"
      "  %\n"
      "  % Get a PseudoClass packet;  convert to grayscale.\n"
      "  %\n"
      "  % Parameters:\n"
      "  %   index: index into the colormap.\n"
      "  %   length: number of pixels minus one of this color (optional).\n"
      "  %\n"
      "  currentfile byte readhexstring pop 0 get\n"
      "  /offset exch 3 mul def\n"
      "  /color_packet colormap offset 3 getinterval def\n"
      "  color_packet 0 get 0.299 mul\n"
      "  color_packet 1 get 0.587 mul add\n"
      "  color_packet 2 get 0.114 mul add\n"
      "  cvi\n"
      "  /gray_packet exch def\n"
      "  compression 0 eq\n"
      "  {\n"
      "    /number_pixels 1 def\n"
      "  }\n"
      "  {\n"
      "    currentfile byte readhexstring pop 0 get\n"
      "    /number_pixels exch 1 add def\n"
      "  } ifelse\n"
      "  0 1 number_pixels 1 sub\n"
      "  {\n"
      "    pixels exch gray_packet put\n"
      "  } for\n"
      "  pixels 0 number_pixels getinterval\n"
      "} bind def\n"
      "\n"
      "/PseudoClassPacket\n"
      "{\n"
      "  %\n"
      "  % Get a PseudoClass packet.\n"
      "  %\n"
      "  % Parameters:\n"
      "  %   index: index into the colormap.\n"
      "  %   length: number of pixels minus one of this color (optional).\n"
      "  %\n"
      "  currentfile byte readhexstring pop 0 get\n"
      "  /offset exch 3 mul def\n"
      "  /color_packet colormap offset 3 getinterval def\n"
      "  compression 0 eq\n"
      "  {\n"
      "    /number_pixels 3 def\n"
      "  }\n"
      "  {\n"
      "    currentfile byte readhexstring pop 0 get\n"
      "    /number_pixels exch 1 add 3 mul def\n"
      "  } ifelse\n"
      "  0 3 number_pixels 1 sub\n"
      "  {\n"
      "    pixels exch color_packet putinterval\n"
      "  } for\n"
      "  pixels 0 number_pixels getinterval\n"
      "} bind def\n"
      "\n"
      "/PseudoClassImage\n"
      "{\n"
      "  %\n"
      "  % Display a PseudoClass image.\n"
      "  %\n"
      "  % Parameters:\n"
      "  %   class: 0-PseudoClass or 1-Grayscale.\n"
      "  %\n"
      "  currentfile buffer readline pop\n"
      "  token pop /class exch def pop\n"
      "  class 0 gt\n"
      "  {\n"
      "    currentfile buffer readline pop\n"
      "    token pop /depth exch def pop\n"
      "    /grays columns 8 add depth sub depth mul 8 idiv string def\n"
      "    columns rows depth\n"
      "    [\n"
      "      columns 0 0\n"
      "      rows neg 0 rows\n"
      "    ]\n"
      "    { currentfile grays readhexstring pop } image\n"
      "  }\n"
      "  {\n"
      "    %\n"
      "    % Parameters:\n"
      "    %   colors: number of colors in the colormap.\n"
      "    %   colormap: red, green, blue color packets.\n"
      "    %\n"
      "    currentfile buffer readline pop\n"
      "    token pop /colors exch def pop\n"
      "    /colors colors 3 mul def\n"
      "    /colormap colors string def\n"
      "    currentfile colormap readhexstring pop pop\n"
      "    systemdict /colorimage known\n"
      "    {\n"
      "      columns rows 8\n"
      "      [\n"
      "        columns 0 0\n"
      "        rows neg 0 rows\n"
      "      ]\n"
      "      { PseudoClassPacket } false 3 colorimage\n"
      "    }\n"
      "    {\n"
      "      %\n"
      "      % No colorimage operator;  convert to grayscale.\n"
      "      %\n"
      "      columns rows 8\n"
      "      [\n"
      "        columns 0 0\n"
      "        rows neg 0 rows\n"
      "      ]\n"
      "      { G…