root / ImageMagick / trunk / coders / ps.c

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%                               PPPP   SSSSS                                  %
%                               P   P  SS                                     %
%                               PPPP    SSS                                   %
%                               P         SS                                  %
%                               P      SSSSS                                  %
%                                                                             %
%                                                                             %
%                         Read/Write Postscript Format.                       %
%                                                                             %
%                              Software Design                                %
%                                John Cristy                                  %
%                                 July 1992                                   %
%                                                                             %
%                                                                             %
%  Copyright 1999-2008 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                                            %
%                                                                             %
%    http://www.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 "magick/studio.h"
#include "magick/blob.h"
#include "magick/blob-private.h"
#include "magick/color.h"
#include "magick/color-private.h"
#include "magick/colorspace.h"
#include "magick/constitute.h"
#include "magick/delegate.h"
#include "magick/delegate-private.h"
#include "magick/draw.h"
#include "magick/exception.h"
#include "magick/exception-private.h"
#include "magick/geometry.h"
#include "magick/image.h"
#include "magick/image-private.h"
#include "magick/list.h"
#include "magick/magick.h"
#include "magick/memory_.h"
#include "magick/monitor.h"
#include "magick/monitor-private.h"
#include "magick/option.h"
#include "magick/profile.h"
#include "magick/resource_.h"
#include "magick/pixel-private.h"
#include "magick/property.h"
#include "magick/quantum-private.h"
#include "magick/static.h"
#include "magick/string_.h"
#include "magick/module.h"
#include "magick/token.h"
#include "magick/transform.h"
#include "magick/utility.h"

/*
  Forward declarations.
*/
static MagickBooleanType
  WritePSImage(const ImageInfo *,Image *);

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   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)
%
%  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.
%
*/
static MagickBooleanType InvokePostscriptDelegate(
  const MagickBooleanType verbose,const char *command)
{
#if defined(MAGICKCORE_GS_DELEGATE) || defined(__WINDOWS__)
  char
    **argv;

  const GhostscriptVectors
    *gs_func;

  gs_main_instance
    *interpreter;

  int
    argc,
    code,
    status;

  register long
    i;

#if defined(__WINDOWS__)
  gs_func=NTGhostscriptDLLVectors();
#else
  GhostscriptVectors
    gs_func_struct;

  gs_func=(&gs_func_struct);
  (void) ResetMagickMemory(&gs_func,0,sizeof(gs_func));
  gs_func_struct.new_instance=(int (*)(gs_main_instance **,void *))
    gsapi_new_instance;
  gs_func_struct.init_with_args=(int (*)(gs_main_instance *,int,char **))
    gsapi_init_with_args;
  gs_func_struct.run_string=(int (*)(gs_main_instance *,const char *,int,int *))
    gsapi_run_string;
  gs_func_struct.delete_instance=(void (*)(gs_main_instance *))
    gsapi_delete_instance;
  gs_func_struct.exit=(int (*)(gs_main_instance *)) gsapi_exit;
#endif
  if (gs_func == (GhostscriptVectors *) NULL)
    return(SystemCommand(verbose,command) == 0 ? MagickFalse : MagickTrue);
  if (verbose != MagickFalse)
    {
      (void) fputs("[ghostscript library]",stdout);
      (void) fputs(strchr(command,' '),stdout);
    }
  status=(gs_func->new_instance)(&interpreter,(void *) NULL);
  if (status < 0)
    return(SystemCommand(verbose,command) == 0 ? MagickFalse : MagickTrue);
  argv=StringToArgv(command,&argc);
  status=(gs_func->init_with_args)(interpreter,argc-1,argv+1);
  if (status == 0)
    status=(gs_func->run_string)(interpreter,"systemdict /start get exec\n",0,
      &code);
  (gs_func->exit)(interpreter);
  (gs_func->delete_instance)(interpreter);
#if defined(__WINDOWS__)
  NTGhostscriptUnLoadDLL();
#endif
  for (i=0; i < (long) argc; i++)
    argv[i]=DestroyString(argv[i]);
  argv=(char **) RelinquishMagickMemory(argv);
  if ((status == 0) || (status == -101))
    return(MagickFalse);
  (void) LogMagickEvent(CoderEvent,GetMagickModule(),
    "Ghostscript returns status %d, exit code %d",status,code);
  return(MagickTrue);
#else
  return(SystemCommand(verbose,command) != 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: This string is generally the first few bytes of an image file
%      or blob.
%
%    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 long
    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) ((unsigned long) value << 4)+hex_digits[c];
    i++;
  }
  return(value);
}

static Image *ReadPSImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
#define BoundingBox  "BoundingBox:"
#define BeginDocument  "BeginDocument:"
#define BeginXMLCode  "begin_xml_code"
#define EndXMLCode  "end_xml_code"
#define ICCProfile "BeginICCProfile:"
#define CMYKCustomColor  "CMYKCustomColor:"
#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[MaxTextExtent],
    density[MaxTextExtent],
    filename[MaxTextExtent],
    geometry[MaxTextExtent],
    input_filename[MaxTextExtent],
    options[MaxTextExtent],
    postscript_filename[MaxTextExtent],
    translate_geometry[MaxTextExtent];

  const char
    *option;

  const DelegateInfo
    *delegate_info;

  GeometryInfo
    geometry_info;

  Image
    *image,
    *next_image,
    *postscript_image;

  ImageInfo
    *read_info;

  int
    c,
    file;

  MagickBooleanType
    cmyk,
    skip,
    status;

  MagickStatusType
    flags;

  PointInfo
    delta;

  RectangleInfo
    page;

  register char
    *p;

  register long
    i;

  SegmentInfo
    bounds,
    hires_bounds;

  short int
    hex_digits[256];

  size_t
    length;

  ssize_t
    count;

  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 == MagickSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  image=AcquireImage(image_info);
  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) ResetMagickMemory(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->x_resolution == 0.0) || (image->y_resolution == 0.0))
    {
      flags=ParseGeometry(PSDensityGeometry,&geometry_info);
      image->x_resolution=geometry_info.rho;
      image->y_resolution=geometry_info.sigma;
      if ((flags & SigmaValue) == 0)
        image->y_resolution=image->x_resolution;
    }
  /*
    Determine page geometry from the Postscript bounding box.
  */
  (void) ResetMagickMemory(&bounds,0,sizeof(bounds));
  (void) ResetMagickMemory(&hires_bounds,0,sizeof(hires_bounds));
  (void) ResetMagickMemory(&page,0,sizeof(page));
  (void) ResetMagickMemory(command,0,sizeof(command));
  hires_bounds.x2=0.0;
  hires_bounds.y2=0.0;
  columns=0;
  rows=0;
  extent=0;
  spotcolor=0;
  language_level=1;
  skip=MagickFalse;
  cmyk=image_info->colorspace == CMYKColorspace ? MagickTrue : MagickFalse;
  pages=(~0UL);
  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) < MaxTextExtent))
      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);
        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(Pages)) == 0)
      (void) sscanf(command,ImageData " %lu %lu",&columns,&rows);
    if (LocaleNCompare(ICCProfile,command,strlen(PhotoshopProfile)) == 0)
      {
        unsigned char
          *datum;

        /*
          Read ICC profile.
        */
        profile=AcquireStringInfo(65536);
        for (i=0; (c=ProfileInteger(image,hex_digits)) != EOF; i++)
        {
          SetStringInfoLength(profile,(size_t) i+1);
          datum=GetStringInfoDatum(profile);
          datum[i]=(unsigned char) c;
        }
        (void) SetImageProfile(image,"icc",profile);
        profile=DestroyStringInfo(profile);
        continue;
      }
    if (LocaleNCompare(PhotoshopProfile,command,strlen(PhotoshopProfile)) == 0)
      {
        unsigned char
          *p;

        /*
          Read Photoshop profile.
        */
        count=(ssize_t) sscanf(command,PhotoshopProfile " %lu",&extent);
        if (count != 1)
          continue;
        length=extent;
        profile=AcquireStringInfo(length);
        p=GetStringInfoDatum(profile);
        for (i=0; i < (long) length; i++)
          *p++=(unsigned char) ProfileInteger(image,hex_digits);
        (void) SetImageProfile(image,"8bim",profile);
        profile=DestroyStringInfo(profile);
        continue;
      }
    if (LocaleNCompare(BeginXMLCode,command,strlen(BeginXMLCode)) == 0)
      {
        /*
          Read XML code.
        */
        c=ReadBlobByte(image);
        p=command;
        profile=AcquireStringInfo(0);
        for (i=0; 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) < MaxTextExtent))
            continue;
          *p='\0';
          p=command;
          if (LocaleNCompare(EndXMLCode,command,strlen(EndXMLCode)) == 0)
            break;
        }
        (void) SetImageProfile(image,"xml-code",profile);
        profile=DestroyStringInfo(profile);
        continue;
      }
    /*
      Is this a CMYK document?
    */
    length=strlen(DocumentProcessColors);
    if (LocaleNCompare(DocumentProcessColors,command,length) == 0)
      cmyk=MagickTrue;
    if (LocaleNCompare(CMYKCustomColor,command,strlen(CMYKCustomColor)) == 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[MaxTextExtent],
          *value;

        register char
          *p;

        /*
          Note spot names.
        */
        (void) FormatMagickString(property,MaxTextExtent,"ps:SpotColor-%lu",
          spotcolor++);
        for (p=command; *p != '\0'; p++)
          if (isspace((int) (unsigned char) *p) != 0)
            break;
        value=AcquireString(p);
        (void) SubstituteString(&value,"(","");
        (void) SubstituteString(&value,")","");
        (void) StripString(value);
        (void) SetImageProperty(image,property,value);
        value=DestroyString(value);
        continue;
      }
    /*
      Note region defined by bounding box.
    */
    count=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);
    if (LocaleNCompare(DocumentMedia,command,strlen(DocumentMedia)) == 0)
      count=(ssize_t) sscanf(command,DocumentMedia " %*s %lf %lf",&bounds.x2,
        &bounds.y2)+2;
    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);
    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);
    if (LocaleNCompare(PageMedia,command,strlen(PageMedia)) == 0)
      count=(ssize_t) sscanf(command,PageMedia " %*s %lf %lf",&bounds.x2,
        &bounds.y2)+2;
    if (count != 4)
      continue;
    if (((bounds.x2 > hires_bounds.x2) && (bounds.y2 > hires_bounds.y2)) ||
        ((hires_bounds.x2 == 0.0) && (hires_bounds.y2 == 0.0)))
      {
        /*
          Set Postscript render geometry.
        */
        (void) FormatMagickString(geometry,MaxTextExtent,"%gx%g%+g%+g",
          bounds.x2-bounds.x1,bounds.y2-bounds.y1,bounds.x1,bounds.y1);
        (void) SetImageProperty(image,"ps:HiResBoundingBox",geometry);
        page.width=(unsigned long) (bounds.x2-bounds.x1+0.5);
        page.height=(unsigned long) (bounds.y2-bounds.y1+0.5);
        hires_bounds=bounds;
      }
  }
  (void) CloseBlob(image);
  if (image_info->colorspace == RGBColorspace)
    cmyk=MagickFalse;
  /*
    Create Ghostscript control file.
  */
  file=AcquireUniqueFileResource(postscript_filename);
  if (file == -1)
    {
      ThrowFileException(&image->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",MaxTextExtent);
  (void) write(file,command,(unsigned int) strlen(command));
  (void) FormatMagickString(translate_geometry,MaxTextExtent,
    "%g %g translate\n",-bounds.x1,-bounds.y1);
  (void) write(file,translate_geometry,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
      if (pages == 1)
        delegate_info=GetDelegateInfo("ps:alpha",(char *) NULL,exception);
      else
        delegate_info=GetDelegateInfo("ps:color",(char *) NULL,exception);
  if (delegate_info == (const DelegateInfo *) NULL)
    {
      (void) RelinquishUniqueFileResource(postscript_filename);
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  *options='\0';
  if ((page.width == 0) || (page.height == 0))
    (void) ParseAbsoluteGeometry(PSPageGeometry,&page);
  if (image_info->page != (char *) NULL)
    (void) ParseAbsoluteGeometry(image_info->page,&page);
  (void) FormatMagickString(density,MaxTextExtent,"%gx%g",image->x_resolution,
    image->y_resolution);
  page.width=(unsigned long) (page.width*image->x_resolution/delta.x+0.5);
  page.height=(unsigned long) (page.height*image->y_resolution/delta.y+0.5);
  (void) FormatMagickString(options,MaxTextExtent,"-g%lux%lu ",
    page.width,page.height);
  read_info=CloneImageInfo(image_info);
  *read_info->magick='\0';
  if (read_info->number_scenes != 0)
    {
      char
        pages[MaxTextExtent];

      (void) FormatMagickString(pages,MaxTextExtent,"-dFirstPage=%lu "
        "-dLastPage=%lu",read_info->scene+1,read_info->scene+
        read_info->number_scenes);
      (void) ConcatenateMagickString(options,pages,MaxTextExtent);
      read_info->number_scenes=0;
      if (read_info->scenes != (char *) NULL)
        *read_info->scenes='\0';
    }
  option=GetImageOption(image_info,"ps:use-cropbox");
  if ((option != (const char *) NULL) && (IsMagickTrue(option) != MagickFalse))
    (void) ConcatenateMagickString(options,"-dEPSCrop ",MaxTextExtent);
  (void) CopyMagickString(filename,read_info->filename,MaxTextExtent);
  (void) AcquireUniqueFilename(read_info->filename);
  (void) FormatMagickString(command,MaxTextExtent,
    GetDelegateCommands(delegate_info),
    read_info->antialias != MagickFalse ? 4 : 1,
    read_info->antialias != MagickFalse ? 4 : 1,density,options,
    read_info->filename,postscript_filename,input_filename);
  status=InvokePostscriptDelegate(read_info->verbose,command);
  if ((status != MagickFalse) ||
      (IsPostscriptRendered(read_info->filename) == MagickFalse))
    {
      (void) ConcatenateMagickString(command," -c showpage",MaxTextExtent);
      status=InvokePostscriptDelegate(read_info->verbose,command);
    }
  postscript_image=(Image *) NULL;
  if (status == MagickFalse)
    postscript_image=ReadImage(read_info,exception);
  (void) RelinquishUniqueFileResource(postscript_filename);
  (void) RelinquishUniqueFileResource(read_info->filename);
  (void) RelinquishUniqueFileResource(input_filename);
  read_info=DestroyImageInfo(read_info);
  if (postscript_image == (Image *) NULL)
    {
      image=DestroyImageList(image);
      ThrowFileException(exception,DelegateError,"PostscriptDelegateFailed",
        image_info->filename);
      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;
        }
    }
  if (image_info->number_scenes != 0)
    {
      Image
        *clone_image;

      register long
        i;

      /*
        Add place holder images to meet the subimage specification requirement.
      */
      for (i=0; i < (long) image_info->scene; i++)
      {
        clone_image=CloneImage(postscript_image,1,1,MagickTrue,exception);
        if (clone_image != (Image *) NULL)
          PrependImageToList(&postscript_image,clone_image);
      }
    }
  scene=0;
  do
  {
    (void) CopyMagickString(postscript_image->filename,filename,MaxTextExtent);
    if (columns != 0)
      postscript_image->magick_columns=columns;
    if (rows != 0)
      postscript_image->magick_rows=rows;
    postscript_image->page=page;
    postscript_image->scene=scene++;
    (void) CloneImageProfiles(postscript_image,image);
    (void) CloneImageProperties(postscript_image,image);
    next_image=SyncNextImageInList(postscript_image);
    if (next_image != (Image *) NULL)
      postscript_image=next_image;
  } while (next_image != (Image *) NULL);
  image=DestroyImageList(image);
  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:
%
%      unsigned long RegisterPSImage(void)
%
*/
ModuleExport unsigned long RegisterPSImage(void)
{
  MagickInfo
    *entry;

  entry=SetMagickInfo("EPI");
  entry->decoder=(DecodeImageHandler *) ReadPSImage;
  entry->encoder=(EncodeImageHandler *) WritePSImage;
  entry->magick=(IsImageFormatHandler *) IsPS;
  entry->adjoin=MagickFalse;
  entry->blob_support=MagickFalse;
  entry->seekable_stream=MagickTrue;
  entry->thread_support=EncoderThreadSupport;
  entry->description=ConstantString(
   "Encapsulated PostScript Interchange format");
  entry->module=ConstantString("PS");
  (void) RegisterMagickInfo(entry);
  entry=SetMagickInfo("EPS");
  entry->decoder=(DecodeImageHandler *) ReadPSImage;
  entry->encoder=(EncodeImageHandler *) WritePSImage;
  entry->magick=(IsImageFormatHandler *) IsPS;
  entry->adjoin=MagickFalse;
  entry->blob_support=MagickFalse;
  entry->seekable_stream=MagickTrue;
  entry->thread_support=EncoderThreadSupport;
  entry->description=ConstantString("Encapsulated PostScript");
  entry->module=ConstantString("PS");
  (void) RegisterMagickInfo(entry);
  entry=SetMagickInfo("EPSF");
  entry->decoder=(DecodeImageHandler *) ReadPSImage;
  entry->encoder=(EncodeImageHandler *) WritePSImage;
  entry->magick=(IsImageFormatHandler *) IsPS;
  entry->adjoin=MagickFalse;
  entry->blob_support=MagickFalse;
  entry->seekable_stream=MagickTrue;
  entry->description=ConstantString("Encapsulated PostScript");
  entry->module=ConstantString("PS");
  (void) RegisterMagickInfo(entry);
  entry=SetMagickInfo("EPSI");
  entry->decoder=(DecodeImageHandler *) ReadPSImage;
  entry->encoder=(EncodeImageHandler *) WritePSImage;
  entry->magick=(IsImageFormatHandler *) IsPS;
  entry->adjoin=MagickFalse;
  entry->blob_support=MagickFalse;
  entry->seekable_stream=MagickTrue;
  entry->thread_support=EncoderThreadSupport;
  entry->description=ConstantString(
    "Encapsulated PostScript Interchange format");
  entry->module=ConstantString("PS");
  (void) RegisterMagickInfo(entry);
  entry=SetMagickInfo("PS");
  entry->decoder=(DecodeImageHandler *) ReadPSImage;
  entry->encoder=(EncodeImageHandler *) WritePSImage;
  entry->magick=(IsImageFormatHandler *) IsPS;
  entry->module=ConstantString("PS");
  entry->blob_support=MagickFalse;
  entry->seekable_stream=MagickTrue;
  entry->thread_support=EncoderThreadSupport;
  entry->description=ConstantString("PostScript");
  (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)
%
%  A description of each parameter follows:
%
%    o image_info: the image info.
%
%    o image: the image.
%
*/

static inline size_t MagickMin(const size_t x,const size_t y)
{
  if (x < y)
    return(x);
  return(y);
}

static inline unsigned char *PopHexPixel(const char **hex_digits,
  const unsigned long pixel,unsigned char *pixels)
{
  register const char
    *hex;

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

static MagickBooleanType Write