% (C) 1989, 2000 Aladdin Enterprises.  All rights reserved.
% 
% This file is part of GNU Ghostscript.
% 
% GNU Ghostscript is distributed in the hope that it will be useful, but
% WITHOUT ANY WARRANTY.  No author or distributor accepts responsibility
% to anyone for the consequences of using it or for whether it serves any
% particular purpose or works at all, unless he says so in writing.  Refer
% to the GNU General Public License for full details.
% 
% Everyone is granted permission to copy, modify and redistribute GNU
% Ghostscript, but only under the conditions described in the GNU General
% Public License.  A copy of this license is supposed to have been given
% to you along with GNU Ghostscript so you can know your rights and
% responsibilities.  It should be in a file named COPYING.  Among other
% things, the copyright notice and this notice must be preserved on all
% copies.

% $RCSfile: gs_init.ps,v $ $Revision: 1.25.2.14 $
% Initialization file for the interpreter.
% When this is run, systemdict is still writable.

% Comment lines of the form
%	%% Replace <n> <file(s)>
% indicate places where the next <n> lines should be replaced by
% the contents of <file(s)>, when creating a single merged init file.

% The interpreter can call out to PostScript code.  All procedures
% called in this way, and no other procedures defined in these
% initialization files, have names that begin with %, e.g.,
% (%Type1BuildChar) cvn.

% Check the interpreter revision.  NOTE: the interpreter code requires
% that the first non-comment token in this file be an integer.
653
dup revision ne
 { (gs: Interpreter revision \() print revision 10 string cvs print
   (\) does not match gs_init.ps revision \() print 10 string cvs print
   (\).\n) print flush null 1 .quit
 }
if pop

% Acquire userdict, and set its length if necessary.
/userdict where
 { pop userdict maxlength 0 eq }
 { true }
ifelse
systemdict exch
 {		% userdict wasn't already set up by iinit.c.
   dup /userdict
   currentdict dup 200 .setmaxlength		% userdict
   .forceput			% userdict is local, systemdict is global
 }
if begin

% Define dummy local/global operators if needed.
systemdict /.setglobal known
 { true .setglobal
 }
 { /.setglobal { pop } bind def
   /.currentglobal { false } bind def
   /.gcheck { pop false } bind def
 }
ifelse

% Define .languagelevel if needed.
systemdict /.languagelevel known not { /.languagelevel 1 def } if

% Optionally choose a default paper size other than U.S. letter.
% (a4) /PAPERSIZE where { pop pop } { /PAPERSIZE exch def } ifelse

% Turn on array packing for the rest of initialization.
true setpacking

% Define the old MS-DOS EOF character as a no-op.
% This is a hack to get around the absurd habit of MS-DOS editors
% of adding an EOF character at the end of the file.
<1a> cvn { } def

% Acquire the debugging flags.
currentdict /DEBUG known   /DEBUG exch def
  /VMDEBUG
    DEBUG {{print mark
            systemdict /level2dict known
	     { .currentglobal dup false .setglobal vmstatus
	       true .setglobal vmstatus 3 -1 roll pop
	       6 -2 roll pop .setglobal
	     }
	     { vmstatus 3 -1 roll pop
	     }
	    ifelse usertime 16#fffff and counttomark
	      { ( ) print (           ) cvs print }
	    repeat pop
	    ( ) print systemdict length (    ) cvs print
	    ( ) print countdictstack (  ) cvs print
	    ( <) print count (    ) cvs print (>\n) print flush
	  }}
	  {{pop
	  }}
	 ifelse
  def

currentdict /BATCH known   /BATCH exch def
currentdict /DELAYBIND known   /DELAYBIND exch def
currentdict /DISKFONTS known   /DISKFONTS exch def
currentdict /DOINTERPOLATE .knownget { /INTERPOLATE exch def } if
currentdict /ESTACKPRINT known   /ESTACKPRINT exch def
currentdict /FAKEFONTS known   /FAKEFONTS exch def
currentdict /FIXEDMEDIA known   /FIXEDMEDIA exch def
currentdict /FIXEDRESOLUTION known   /FIXEDRESOLUTION exch def
currentdict /LOCALFONTS known   /LOCALFONTS exch def
currentdict /NOBIND known   /NOBIND exch def
/.bind /bind load def
NOBIND { /bind { } def } if
currentdict /NOCACHE known   /NOCACHE exch def
currentdict /NOCIE known   /NOCIE exch def
currentdict /NODISPLAY known   not /DISPLAYING exch def
currentdict /NOFONTMAP known   /NOFONTMAP exch def
currentdict /NOCIDFONTMAP known /NOCIDFONTMAP exch def
currentdict /NOFONTPATH known   /NOFONTPATH exch def
currentdict /NOGC known   /NOGC exch def
currentdict /NOINTERPOLATE .knownget { /INTERPOLATE exch not def } if
currentdict /NOPAGEPROMPT known   /NOPAGEPROMPT exch def
currentdict /NOPAUSE known   /NOPAUSE exch def
currentdict /NOPLATFONTS known   /NOPLATFONTS exch def
currentdict /NOPROMPT known   /NOPROMPT exch def
% The default value of ORIENT1 is true, not false.
currentdict /ORIENT1 known not { /ORIENT1 true def } if
currentdict /OSTACKPRINT known   /OSTACKPRINT exch def
currentdict /OUTPUTFILE known	% obsolete
 { /OutputFile /OUTPUTFILE load def
   currentdict /OUTPUTFILE .undef
 } if
currentdict /QUIET known   /QUIET exch def
% DELAYSAFER is effectively the same as newer NOSAFER
currentdict /DELAYSAFER known { /DELAYSAFER true def /NOSAFER true def } if
currentdict /PARANOIDSAFER known /PARANOIDSAFER exch def
/SAFER currentdict /NOSAFER known {
  false
} {
  currentdict /SAFER known PARANOIDSAFER or
}
ifelse def
currentdict /SHORTERRORS known   /SHORTERRORS exch def
currentdict /STRICT known   /STRICT exch def
currentdict /TTYPAUSE known   /TTYPAUSE exch def
currentdict /WRITESYSTEMDICT known   /WRITESYSTEMDICT exch def

% Acquire environment variables.
currentdict /DEVICE known not
 { (GS_DEVICE) getenv { /DEVICE exch def } if } if

(START) VMDEBUG

% Open the standard files, so they will be open at the outermost save level.
(%stdin) (r) file pop
(%stdout) (w) file pop
(%stderr) (w) file pop

/.currentuserparams where {
  pop mark
	% The Adobe implementations appear to have very large maximum
	% stack sizes.  This turns out to actually make a difference,
	% since some badly-behaved files include extremely long procedures,
	% or construct huge arrays on the operand stack.
	% We reset the stack sizes now so that we don't have to worry
	% about overflowing the (rather small) built-in stack sizes
	% during initialization.
  /MaxDictStack 500
  /MaxExecStack 5000
  /MaxOpStack 50000
  .dicttomark .setuserparams
} if

% Define a procedure for skipping over an unneeded section of code.
% This avoids allocating space for the skipped procedures.
% We can't use readline, because that imposes a line length limit.
/.skipeof	% <string> .skipeof -
 { currentfile exch 1 exch .subfiledecode flushfile
 } .bind def

% Define procedures to assist users who don't read the documentation.
userdict begin
/help
 { (Enter PostScript commands.  '(filename) run' runs a file, 'quit' exits.\n)
   print flush
 } .bind def
end

% Define =string, which is used by some PostScript programs even though
% it isn't documented anywhere.
% Put it in userdict so that each context can have its own copy.
userdict /=string 256 string put

% Print the greeting.

/printgreeting
 { mark
   product (Ghostscript) search
    { pop pop pop
      (This software comes with NO WARRANTY: see the file COPYING for details.\n)
    }
    { pop
    }
   ifelse
   (\n) copyright
   (\)\n) revisiondate 10 mod revisiondate 10 idiv 10 mod (-)
   revisiondate 100 idiv 10 mod revisiondate 1000 idiv 10 mod (-)
   revisiondate 10000 idiv ( \()
   revision 10 mod
   revision 100 mod dup 0 ne { 10 idiv } { pop } ifelse (.)
   revision 100 idiv ( )
   product
   counttomark
    { (%stdout) (w) file exch 0 .writecvp
    } repeat pop
 } .bind def

QUIET not { printgreeting flush } if

% Define a special version of def for making operator procedures.
/obind {	% <name> <proc> obind <name> <oper>
  1 index exch .makeoperator
} .bind def
/odef {		% <name> <proc> odef -
  1 index exch .makeoperator def
} .bind def

% Define a special version of def for storing local objects into global
% dictionaries.  Like .forceput, this exists only during initialization.
/.forcedef {		% <key> <value> .forcedef -
  currentdict 3 1 roll .forceput
} .bind odef

% Define procedures for accessing variables in systemdict and userdict
% regardless of the contents of the dictionary stack.
/.systemvar {		% <name> .systemvar <value>
  //systemdict exch get
} .bind odef
/.userdict {		% - .userdict <dict>
  /userdict .systemvar
} .bind odef
/.uservar {		% <name> .uservar <value>
  .userdict exch get
} .bind odef

% If we're delaying binding, remember everything that needs to be bound later.
DELAYBIND NOBIND not and
 { .currentglobal false .setglobal
   systemdict /.delaybind 1500 array .forceput
   .setglobal
   userdict /.delaycount 0 put
	% When we've done the delayed bind, we want to stop saving.
	% Detect this by the disappearance of .delaybind.
   /bind
    { /.delaybind .systemvar dup length 0 ne
       { .delaycount 2 index put
         .userdict /.delaycount .delaycount 1 add put
       }
       { pop .bind
       }
      ifelse
    } .bind def
 } if

%**************** BACKWARD COMPATIBILITY ****************
/hwsizedict mark /HWSize null .dicttomark readonly def
/copyscanlines {		% <device> <y> <string> copyscanlines <substr>
  0 3 1 roll 3 index //hwsizedict .getdeviceparams
  exch pop exch pop aload pop 3 2 roll
  0 exch null exch .getbitsrect exch pop
} bind odef
currentdict /hwsizedict .undef
/getdeviceprops
 { null .getdeviceparams
 } bind odef
/.putdeviceprops
 { null true counttomark 1 add 3 roll .putdeviceparams
   dup type /booleantype ne
    { dup mark eq { /unknown /rangecheck } if
      counttomark 4 add 1 roll cleartomark pop pop pop
      /.putdeviceprops load exch signalerror
    }
   if
 } bind odef
/.currentfilladjust { .currentfilladjust2 pop } bind odef
/.setfilladjust { dup .setfilladjust2 } bind odef
/.writecvs { 0 .writecvp } bind odef
%**************** DEPRECATED PROCEDURES ****************
%**************** DO NOT USE THESE IN NEW CODE ****************
/max { .max } bind def		% use .max instead
/min { .min } bind def		% use .min instead
/unread /.unread load def	% use .peekstring instead
%**************** END OF BACKWARD COMPATIBILITY SECTION ****************

% Define predefined procedures substituting for operators,
% in alphabetical order.

userdict /#copies 1 put
% Adobe implementations don't accept /[ or /], so we don't either.
([) cvn
	/mark load def
(]) cvn
	{counttomark array astore exch pop} odef
% .beginpage is redefined if setpagedevice is present.
/.beginpage { } odef
% In LanguageLevel 3, copypage erases the page.
/copypage {
	.languagelevel 3 ge
	dup { 0 } { 1 } ifelse .endpage {
	  .currentnumcopies 1 index .outputpage
	  (>>copypage, press <return> to continue<<\n) .confirm
	  dup { erasepage } if
	} if pop .beginpage
} odef
/currentmatrix {
	.currentmatrix 6 index astore pop
} odef
% .currentnumcopies is redefined in Level 2.
/.currentnumcopies { #copies } odef
/setcolorscreen where { pop		% not in all Level 1 configurations
   /currentcolorscreen
	{ .currenthalftone
	   { { 60 exch 0 exch 3 copy 6 copy }	% halftone - not possible
	     { 3 copy 6 copy }			% screen
	     { }				% colorscreen
	   }
	  exch get exec
	} odef
} if
/currentscreen
	{ .currenthalftone
	   { { 60 exch 0 exch }			% halftone - not possible
	     { }				% screen
	     { 12 3 roll 9 { pop } repeat }	% colorscreen
	   }
	  exch get exec
	} odef
/.echo /echo load def
userdict /.echo.mode true put
/echo	{dup /.echo.mode exch store .echo} odef
/eexec {
	% Rebind .currentresourcefile if it is the source for the eexec.
  dup 55665 //filterdict /eexecDecode get exec
  cvx exch .currentresourcefile eq
  //systemdict begin { {exec} .execasresource } { exec } ifelse
	% Only pop systemdict if it is still the top element,
	% because this is apparently what Adobe interpreters do.
  currentdict //systemdict eq { end } if
} odef
% .endpage is redefined if setpagedevice is present.
/.endpage { 2 ne } odef
% erasepage mustn't use gsave/grestore, because we call it before
% the graphics state stack has been fully initialized.
/erasepage
	{ /currentcolor where
	   { pop currentcolor currentcolorspace { setcolorspace setcolor } }
	   { /currentcmykcolor where
	      { pop currentcmykcolor { setcmykcolor } }
	      { currentrgbcolor { setrgbcolor } }
	     ifelse
	   }
	  ifelse 1 setgray .fillpage exec
	} odef
% To satisfy the Genoa FTS, executive must be a procedure, not an operator.
/executive
	{ { prompt
	     { (%statementedit) (r) file } stopped
	     { pop pop $error /errorname get /undefinedfilename eq
		{ .clearerror exit } if		% EOF
	       handleerror null		% ioerror??
	     }
	    if
	    cvx { .runexec } execute
	  } loop
	} bind def
/filter
	{ //filterdict 1 index .knownget
	   { exch pop exec }
	   { /filter load /undefined signalerror }
	  ifelse
	} odef
/handleerror
	{ /errordict .systemvar /handleerror get exec } bind def
/identmatrix [1.0 0.0 0.0 1.0 0.0 0.0] readonly def
/identmatrix
	{ dup 0 //identmatrix putinterval } odef
/languagelevel 1 def		% gs_lev2.ps may change this
/makeimagedevice { false makewordimagedevice } odef
/matrix	{ 6 array identmatrix } odef
/pathbbox
	{ false .pathbbox
	} odef
% .promptmsg is redefined if the interpreter includes readline support.
/.promptmsg {
	(GS) print
	count 0 ne { (<) print count =only } if
	(>) print flush
} bind def
/prompt	{ flush flushpage NOPROMPT not { .promptmsg } if } bind def
/pstack	{ 0 1 count 3 sub { index == } for } bind def
/putdeviceprops
	{ .putdeviceprops { erasepage } if } odef
/quit	{ /quit load 0 .quit } odef
/run	{ dup type /filetype ne { (r) file } if
		% We must close the file when execution terminates,
		% regardless of the state of the stack,
		% and then propagate an error, if any.
	  cvx .runexec
	} odef
% Execute a file.
% Level 2 uses 2 .stop to clear the e-stack for a successful startjob:
% we detect that here, since we need to handle this even if we start out
% without job control in effect.
%
% What we push on the e-stack is the following to be executed in this order:
%	<lit-file|fileproc> .runexec1 <lit-file|fileproc> .runexec2
/.runexec1 {		% <file|fileproc> .runexec1 -
  dup type /filetype ne { cvx exec } if
  cvx null 2 .stopped
	% If we got back here from a startjob, just keep going.
	% startjob replaces the null on the o-stack with a procedure
	% to be executed when we get back here.
  dup null ne { exec true } { pop false } ifelse
} bind def
/.runexec2 {		% <continue> <file|fileproc> .runexec2 -
  exch {
    .runexec
  } {
    dup type /filetype ne { cvx exec } if
    closefile
  } ifelse
} bind def
/.runexec {		% <file|fileproc> .runexec -
  cvlit /.runexec1 cvx 1 index /.runexec2 cvx 4 .execn
} bind def
% The following is only for compatibility with Adobe interpreters.
/setdash {
	1 index length 11 gt { /setdash load /limitcheck signalerror } if
	//setdash
} odef
/setdevice
	{ .setdevice { erasepage } if } odef
/setlinecap {
	dup 2 gt { /setlinecap load /rangecheck signalerror } if
	.setlinecap
} odef
/setlinejoin {
	dup 2 gt { /setlinejoin load /rangecheck signalerror } if
	.setlinejoin
} odef
/setmatrix {
	dup aload pop .setmatrix pop
} odef
/showpage {
	0 .endpage .doneshowpage {
	  .currentnumcopies true .outputpage
	  (>>showpage, press <return> to continue<<\n) .confirm
	  erasepage
	} if initgraphics .beginpage
} odef
% Code output by Adobe Illustrator relies on the fact that
% `stack' is a procedure, not an operator!!!
/stack	{ 0 1 count 3 sub { index = } for } bind def
/start	{ BATCH { null 0 .quit } { executive } ifelse } def
% Internal uses of stopped that aren't going to do a stop if an error occurs
% should use .internalstopped to avoid setting newerror et al.
/.internalstopped { null 1 .stopped null ne } bind def
/store {	% Don't alter operands before completing.
	1 index where { 2 index 2 index put pop pop } { def } ifelse
} odef
/.typenames mark .typenames counttomark packedarray exch pop def
/type {
	//.typenames .type
} odef
currentdict /.typenames .undef
% When running in Level 1 mode, this interpreter is supposed to be
% compatible with PostScript "version" 54.0 (I think).
/version (54.0) readonly def
/.wheredict 10 dict def
/.where /where load def
/where {
	//.wheredict 1 index .knownget { exec } { .where } ifelse
} odef

% internaldict is defined in systemdict, but the dictionary is allocated
% in local VM.  However, the procedure must be global, since it is an
% "operator" and must be bind-able into global procedures.
% We make a procedure for creating it, since we must create a new one
% for each context with private local VM.
/.makeinternaldict {
  .currentglobal true .setglobal
    [ /dup .systemvar 1183615869 /eq .systemvar
	[ /pop .systemvar null ] cvx
	false .setglobal
	dup 1 10 dict .forceput	% proc is global, dict is local
	true .setglobal
	[ /internaldict /cvx .systemvar /invalidaccess /signalerror cvx ] cvx
      /ifelse .systemvar
    ] cvx executeonly
  exch .setglobal
} odef
systemdict /internaldict dup .makeinternaldict .makeoperator
.forceput		% proc is local, systemdict is global
% Move superexec to internaldict if superexec is defined.
currentdict /superexec .knownget {
  1183615869 internaldict /superexec 3 -1 roll put
  currentdict /superexec .undef
} if

% Define some additional built-in procedures (beyond the ones defined by
% the PostScript Language Reference Manual).
% Warning: these are not guaranteed to stay the same from one release
% to the next!
/concatstrings	%	(str1) (str2) concatstrings (str1str2)
	{ exch dup length 2 index length add string	% str2 str1 new
	  dup dup 4 2 roll copy		% str2 new new new1
	  length 4 -1 roll putinterval
	} bind def
/copyarray
	{ dup length array copy } bind def
% Copy a dictionary per the Level 2 spec even in Level 1.
/.copydict		% <fromdict> <todict> .copydict <todict>
	{ dup 3 -1 roll { put dup } forall pop } bind def
/copystring
	{ dup length string copy } bind def
/findlibfile {
	.libfile { dup .filename pop exch true } { false } ifelse
} odef
/.growdictlength	% get size for growing a dictionary
	{ length 3 mul 2 idiv 1 add
	} bind def
/.growdict		% grow a dictionary
	{ dup .growdictlength .setmaxlength
	} bind def
/.growput		% put, grow the dictionary if needed
	{ 2 index length 3 index maxlength eq
	   { 3 copy pop known not { 2 index .growdict } if
	   } if
	  put
	} bind def
/.packtomark
	{ counttomark packedarray exch pop } bind def
/ppstack
	{ 0 1 count 3 sub { index === } for } bind def
/runlibfile
	{		% We don't want to bind 'run' into this procedure,
			% since run may get redefined.
	  findlibfile
	   { exch pop /run .systemvar exec }
	   { /undefinedfilename signalerror }
	  ifelse
	} bind def
/selectdevice
	{ finddevice setdevice .setdefaultscreen } bind def
/signalerror		% <object> <errorname> signalerror -
	{ /errordict .systemvar exch get exec } bind def

% Define the =[only] procedures.  Also define =print,
% which is used by some PostScript programs even though
% it isn't documented anywhere.
/write=only {
	.writecvs
} bind def
/write= {
	1 index exch write=only (\n) writestring
} bind def
/=only	{ (%stdout) (w) file exch write=only } bind def
/=	{ =only (\n) print } bind def
/=print	/=only load def
% Temporarily define == as = for the sake of runlibfile0.
/== /= load def

% The following procedures are documented.
/copydevice {		% <device> copydevice <newdevice>
  false .copydevice2
} odef
/finddevice {		% <devicename> finddevice <device>
  /devicedict .systemvar exch get
  dup 1 get null eq {
		% This is the first request for this type of device.
		% Create a default instance now.
		% Stack: [proto null]
    .currentglobal true .setglobal exch
    dup dup 0 get copydevice 1 exch put
    exch .setglobal
  } if 1 get
} bind def
/findprotodevice {	% <devicename> findprotodevice <protodevice>
  /devicedict .systemvar exch get 0 get
} bind def

% Run a resource file.  This allows us to distinguish resource objects
% from objects coming from input files.
userdict /.currentresourcefile null put
/.execasresource {	% <file> <proc|runfile> .execasresource -
  /stopped .systemvar
  /.currentresourcefile .uservar
		% Stack: file proc -stopped- currfile
  .userdict /.currentresourcefile 5 index cvlit put
  2 .execn		% stopped <file>
  .userdict /.currentresourcefile 3 -1 roll put
  { stop } if
} bind def
/.runresource {		% <file> .runresource -
  { /run .systemvar exec } .execasresource
} bind def

% Define procedures for getting and setting the current device resolution.

/gsgetdeviceprop	% <device> <propname> gsgetdeviceprop <value>
 { 2 copy mark exch null .dicttomark .getdeviceparams
   dup mark eq		% if true, not found
    { pop dup /undefined signalerror }
    { 5 1 roll pop pop pop pop }
   ifelse
 } bind def
/gscurrentresolution	% - gscurrentresolution <[xres yres]>
 { currentdevice /HWResolution gsgetdeviceprop
 } bind def
/gssetresolution	% <[xres yres]> gssetresolution -
 { 2 array astore mark exch /HWResolution exch
   currentdevice copydevice putdeviceprops setdevice
 } bind def

% Define auxiliary procedures needed for the above.
/shellarguments		% -> shell_arguments true (or) false
	{ /ARGUMENTS where
	   { /ARGUMENTS get dup type /arraytype eq
	      { aload pop /ARGUMENTS null store true }
	      { pop false }
	     ifelse }
	   { false } ifelse
	} bind def
/.confirm {
  DISPLAYING NOPAUSE not TTYPAUSE or and {
	% Print a message (unless NOPAGEPROMPT or NOPROMPT is true)
	% and wait for the user to type something.
	% If the user just types a newline, flush it.
    NOPAGEPROMPT NOPROMPT or { pop } { print flush } ifelse
    .confirmread
  } {
    pop
  } ifelse
} bind def
/.confirmread {
  TTYPAUSE {
    (/dev/tty) (r) file dup read pop pop closefile
  } {
    .echo.mode false echo
    (%stdin) (r) file dup read {
      dup (\n) 0 get eq { pop pop } { unread } ifelse
    } {
      pop
    } ifelse echo
  } ifelse
} bind def

% Define the procedure used by .runfile, .runstdin and .runstring
% for executing user input.
% This is called with a procedure or executable file on the operand stack.
/.execute {		% <obj> .execute <stopped>
  stopped $error /newerror get and
   { handleerror flush true } { false } ifelse
} bind def
/execute {		% <obj> execute -
  .execute pop
} odef
% Define an execute analogue of runlibfile0.
/execute0 {		% <obj> execute0 -
  .execute { /execute0 cvx 1 .quit } if
} bind def
% Define the procedure that the C code uses for running files
% named on the command line.
/.runfile {
  { runlibfile } execute0
} def
% Define the procedure that the C code uses for running piped input.
% We don't use the obvious { (%stdin) run }, because we want the file to be
% reopened if a startjob does a restore.
/.runstdin {
  { { (%stdin) (r) file cvx } .runexec } execute0
} bind def
% Define the procedure that the C code uses for running commands
% given on the command line with -c.  We turn the string into a file so that
% .runexec can do the right thing with a startjob.
/.runstring {
  .currentglobal exch true .setglobal
  0 () .subfiledecode
  exch .setglobal cvx { .runexec } execute0
} bind def
% Define the procedure that the C code uses to set up for executing
% a string that may be received in pieces.
/.runstringbegin {
  .currentglobal true .setglobal
  { .needinput } bind 0 () .subfiledecode
  exch .setglobal cvx .runexec
} bind def

% Define a special version of runlibfile that aborts on errors.
/runlibfile0
	{ cvlit dup /.currentfilename exch def
	   { findlibfile not { stop } if }
	  stopped
	   { (Can't find \(or open\) initialization file ) print
	     .currentfilename == flush /runlibfile0 cvx 1 .quit
	   } if
	  exch pop cvx stopped
	   { (While reading ) print .currentfilename print (:\n) print flush
	     handleerror /runlibfile0 1 .quit
	   } if
	} bind def
% Temporarily substitute it for the real runlibfile.
/.runlibfile /runlibfile load def
/runlibfile /runlibfile0 load def

% Create the error handling machinery.
% Define the standard error handlers.
% The interpreter has created the ErrorNames array.
/.unstoppederrorhandler	% <command> <errorname> .unstoppederrorhandler -
 {	% This is the handler that gets used for recursive errors,
	% or errors outside the scope of a 'stopped'.
   2 copy SHORTERRORS
    { (%%[ Error: ) print =only flush
      (; OffendingCommand: ) print =only ( ]%%) =
    }
    { (Unrecoverable error: ) print =only flush
      ( in ) print = flush
      count 2 gt
       { (Operand stack:\n  ) print
         count 1 sub -1 2 { (  ) print index =only flush } for
	 () = flush
       } if
    }
   ifelse
   -1 0 1 //ErrorNames length 1 sub
    { dup //ErrorNames exch get 3 index eq
       { not exch pop exit } { pop } ifelse
    }
   for exch pop .quit
 } bind def
/.errorhandler		% <command> <errorname> .errorhandler -
  {		% Detect an internal 'stopped'.
    1 .instopped { null eq { pop pop stop } if } if
    $error /.inerror get 1 .instopped { pop } { pop true } ifelse
     { .unstoppederrorhandler
     } if	% detect error recursion
    $error /globalmode .currentglobal false .setglobal put
    $error /.inerror true put
    $error /newerror true put
    $error exch /errorname exch put
    $error exch /command exch put
    $error /recordstacks get $error /errorname get /VMerror ne and
     {		% Attempt to store the stack contents atomically.
       count array astore dup $error /ostack 4 -1 roll
       countexecstack array execstack $error /estack 3 -1 roll
       countdictstack array dictstack $error /dstack 3 -1 roll
       put put put aload pop
     }
     { $error /dstack .undef
       $error /estack .undef
       $error /ostack .undef
     }
    ifelse
    $error /position currentfile status
     { currentfile { fileposition } .internalstopped { pop null } if
     }
     {		% If this was a scanner error, the file is no longer current,
		% but the command holds the file, which may still be open.
       $error /command get dup type /filetype eq
        { { fileposition } .internalstopped { pop null } if }
        { pop null }
       ifelse
     }
    ifelse put
		% During initialization, we don't reset the allocation
		% mode on errors.
    $error /globalmode get $error /.nosetlocal get and .setglobal
    $error /.inerror false put
    stop
  } bind def
% Define the standard handleerror.  We break out the printing procedure
% (.printerror) so that it can be extended for binary output
% if the Level 2 facilities are present.
  /.printerror
   { $error begin
       /command load errorname SHORTERRORS
	{ (%%[ Error: ) print =only flush
	  (; OffendingCommand: ) print =only
	  errorinfo dup null eq {
	    pop
	  } {
	    (;\nErrorInfo:) print
	    dup type /arraytype eq
	      { { ( ) print =only } forall }
	      { ( ) print =only }
	    ifelse
	  } ifelse
          ( ]%%) = flush
	}
	{ (Error: ) print ==only flush
	  ( in ) print ==only flush
	  errorinfo dup null eq {
	    pop
	  } {
	    (\nAdditional information: ) print ==only flush
	  } ifelse
	  .printerror_long
	}
       ifelse
       .clearerror
     end
     flush
    } bind def     
  /.printerror_long			% long error printout,
					% $error is on the dict stack
   {	% Push the (anonymous) stack printing procedure.
	%  <heading> <==flag> <override-name> <stackname> proc
       {
	 currentdict exch .knownget	% stackname defined in $error?
	 {
	   4 1 roll			% stack: <stack> <head> <==flag> <over>
	   errordict exch .knownget	% overridename defined?
	   { 
	     exch pop exch pop exec	% call override with <stack>
	   }
	   { 
	     exch print exch		% print heading. stack <==flag> <stack>
	     1 index not { () = } if
	     { 1 index { (\n    ) } { (   ) } ifelse print
	       dup type /dicttype eq
	       {
		 (--dict:) print
		 dup rcheck {
		   dup length =only (/) print dup maxlength =only
		   dup wcheck not { ((ro)) print } if
		 } if
		 /gcheck where {
		   pop gcheck { ((G)) } { ((L)) } ifelse print
		 } {
		   pop
		 } ifelse (--) print
	       }
	       {
		 dup type /stringtype eq 2 index or
		 { ==only } { =only } ifelse
	       } ifelse
	     } forall
	     pop
	   }
	   ifelse			% overridden
	 }
	 { pop pop pop
	 }
	 ifelse				% stack known
       }

       (\nOperand stack:) OSTACKPRINT /.printostack /ostack 4 index exec
       (\nExecution stack:) ESTACKPRINT /.printestack /estack 4 index exec
       (\nBacktrace:) true /.printbacktrace /backtrace 4 index exec
       (\nDictionary stack:) false /.printdstack /dstack 4 index exec
       () =
       pop	% printing procedure

       errorname /VMerror eq
	{ (VM status:) print mark vmstatus
	  counttomark { ( ) print counttomark -1 roll dup =only } repeat
	  cleartomark () =
	} if

       .languagelevel 2 ge
	{ (Current allocation mode is ) print
	  globalmode { (global\n) } { (local\n) } ifelse print
	} if

       .oserrno dup 0 ne
	{ (Last OS error: ) print
	  errorname /VMerror ne
	   { dup .oserrorstring { = pop } { = } ifelse }
	   { = }
	  ifelse
	}
	{ pop
	}
       ifelse

       position null ne
	{ (Current file position is ) print position = }
       if

   } bind def
% Define a procedure for clearing the error indication.
/.clearerror
 { $error /newerror false put
   $error /errorname null put
   $error /errorinfo null put
   0 .setoserrno
 } bind def

% Define $error.  This must be in local VM.
.currentglobal false .setglobal
/$error 40 dict .forcedef	% $error is local, systemdict is global
		% newerror, errorname, command, errorinfo,
		% ostack, estack, dstack, recordstacks,
		% binary, globalmode,
		% .inerror, .nosetlocal, position,
		% plus extra space for badly designed error handers.
$error begin
  /newerror false def
  /recordstacks true def
  /binary false def
  /globalmode .currentglobal def
  /.inerror false def
  /.nosetlocal true def
  /position null def
end
% Define errordict similarly.  It has one entry per error name,
%   plus handleerror.  However, some astonishingly badly written PostScript
%   files require it to have at least one empty slot.
/errordict ErrorNames length 2 add dict
.forcedef		% errordict is local, systemdict is global
.setglobal		% contents of errordict are global
errordict begin
  ErrorNames
   { mark 1 index systemdict /.errorhandler get /exec load .packtomark cvx def
   } forall
% The handlers for interrupt and timeout are special; there is no
% 'current object', so they push their own name.
   { /interrupt /timeout }
   { mark 1 index dup systemdict /.errorhandler get /exec load .packtomark cvx def
   } forall
/handleerror
 { /.printerror .systemvar exec
 } bind def
end

% Define the [write]==[only] procedures.
/.dict 8 dict dup
begin def
  /.cvp {1 index exch 1 .writecvp} bind def
  /.p {1 index exch writestring} bind def
  /.p1 {2 index exch writestring} bind def
  /.p2 {3 index exch writestring} bind def
  /.print
	{ dup type .dict exch .knownget { exec } { .cvp } ifelse
	} bind def
  /arraytype
	{dup rcheck
	  {() exch dup xcheck
	    {({) .p2
	     {exch .p1
	      1 index exch .print pop ( )} forall
	     (})}
	    {([) .p2
	     {exch .p1
	      1 index exch .print pop ( )} forall
	     (])}
	   ifelse exch pop .p}
	  {.cvp}
	 ifelse} bind def
  /packedarraytype /arraytype load def
{//.dict begin .print pop end}
  bind
end

/write==only exch def
/write== {1 index exch write==only (\n) writestring} bind def
/==only { (%stdout) (w) file exch write==only } bind def
/== {==only (\n) print} bind def

% Define [write]===[only], an extension that prints dictionaries
% in readable form and doesn't truncate strings.
/.dict /write==only load 0 get dup length 2 add dict .copydict dup
begin def
  /dicttype
	{ dup rcheck
	   { (<< ) .p1
	      { 2 index 3 -1 roll .print pop ( ) .p1
		1 index exch .print pop ( ) .p
	      }
	     forall (>>) .p
	   }
	   { .cvp
	   }
	  ifelse
	} bind def
  /stringtype
	{ 1 index exch 2 .writecvp
	} bind def

{//.dict begin .print pop end}
  bind
end

/write===only exch def
/write=== {1 index exch write===only (\n) writestring} bind def
/===only { (%stdout) (w) file exch write===only } bind def
/=== { ===only (\n) print } bind def

(END PROCS) VMDEBUG

% Define the font directory.
/FontDirectory false .setglobal 100 dict true .setglobal
.forcedef		% FontDirectory is local, systemdict is global

% Define the encoding dictionary.
/EncodingDirectory 16 dict def	% enough for Level 2 + PDF standard encodings

% Define .findencoding.  (This is redefined in Level 2.)
/.findencoding
 { //EncodingDirectory exch get exec
 } bind def
/.defineencoding
 { //EncodingDirectory 3 1 roll put
 } bind def
% If we've got the composite font extensions, define findencoding.
% To satisfy the Genoa FTS, findencoding must be a procedure, not an operator.
/rootfont where { pop /findencoding { .findencoding } def } if

% Define .registerencoding.
% NOTE: the name registeredencodings is known to (initialized by and shared
% with) the interpreter.
/.registerencoding {	% <index> <array> .registerencoding -
	% Check that the array is indexable.
	% (It might still be a string, but then the .namestring will fail.)
  dup 0 0 getinterval pop
	% Check that all the elements of the array are names.
  dup { .namestring pop } forall
	% Do the store.
  //registeredencodings 2 index 2 index readonly put pop pop
} bind odef
systemdict /registeredencodings .undef

% Load StandardEncoding.
%% Replace 1 (gs_std_e.ps)
(gs_std_e.ps) dup runlibfile VMDEBUG

% Load ISOLatin1Encoding.
%% Replace 1 (gs_il1_e.ps)
(gs_il1_e.ps) dup runlibfile VMDEBUG

% Define stubs for the Symbol and Dingbats encodings.
% Note that the first element of the procedure must be the file name,
% since gs_lev2.ps extracts it to set up the Encoding resource category.

  /SymbolEncoding { /SymbolEncoding .findencoding } bind def
%% Replace 3 (gs_sym_e.ps)
  EncodingDirectory /SymbolEncoding
   { (gs_sym_e.ps) //systemdict begin runlibfile SymbolEncoding end }
  bind put

  /DingbatsEncoding { /DingbatsEncoding .findencoding } bind def
%% Replace 3 (gs_dbt_e.ps)
  EncodingDirectory /DingbatsEncoding
   { (gs_dbt_e.ps) //systemdict begin runlibfile DingbatsEncoding end }
  bind put

(END FONTDIR/ENCS) VMDEBUG

% Construct a dictionary of all available devices.
% These are (read-only) device prototypes that can't be
% installed or have their parameters changed.  For this reason,
% the value in the dictionary is actually a 2-element writable array,
% to allow us to create a default instance of the prototype on demand.

	% Loop until the .getdevice gets a rangecheck.
errordict /rangecheck 2 copy get
errordict /rangecheck { pop stop } put	% pop the command
  0 { {dup .getdevice exch 1 add} loop} .internalstopped pop
  1 add dict  /devicedict 1 index def
  begin			% 2nd copy of count is on stack
   { dup .devicename exch
     dup wcheck { dup } { null } ifelse 2 array astore def
   } repeat
  end
put		% errordict /rangecheck
.clearerror
/devicenames devicedict { pop } forall devicedict length packedarray def

% Determine the default device.
/defaultdevice DISPLAYING
 { systemdict /DEVICE .knownget
    { devicedict 1 index known not
       { (Unknown device: ) print =
	 flush /defaultdevice cvx 1 .quit
       }
      if
    }
    { 0 .getdevice .devicename
    }
   ifelse
 }
 { /nullpage
 }
ifelse
/.defaultdevicename 1 index def
finddevice	% make a copy
def
devicedict /Default devicedict .defaultdevicename get put

(END DEVS) VMDEBUG

% Define statusdict, for the benefit of programs
% that think they are running on a LaserWriter or similar printer.
%% Replace 1 (gs_statd.ps)
(gs_statd.ps) runlibfile

(END STATD) VMDEBUG

% Load the standard font environment.
%% Replace 1 (gs_fonts.ps)
(gs_fonts.ps) runlibfile

(END GS_FONTS) VMDEBUG

% Define the default halftone screen and BG/UCR functions now, so that
% it will bind in the original definitions of set[color]screen.
% We make this a procedure so we can call it again when switching devices.

% Use an ordered dither for low-resolution devices.
/.setloreshalftone {	% <dpi> .setloreshalftone -
	% The following 'ordered dither' spot function was contributed by
	% Gregg Townsend.  Thanks, Gregg!
   16.001 div 0			% not 16: avoids rounding problems
    { 1 add 7.9999 mul cvi exch 1 add 7.9999 mul cvi 16 mul add <
	0E 8E 2E AE 06 86 26 A6 0C 8C 2C AC 04 84 24 A4
	CE 4E EE 6E C6 46 E6 66 CC 4C EC 6C C4 44 E4 64
	3E BE 1E 9E 36 B6 16 96 3C BC 1C 9C 34 B4 14 94
	FE 7E DE 5E F6 76 D6 56 FC 7C DC 5C F4 74 D4 54
	01 81 21 A1 09 89 29 A9 03 83 23 A3 0B 8B 2B AB
	C1 41 E1 61 C9 49 E9 69 C3 43 E3 63 CB 4B EB 6B
	31 B1 11 91 39 B9 19 99 33 B3 13 93 3B BB 1B 9B
	F1 71 D1 51 F9 79 D9 59 F3 73 D3 53 FB 7B DB 5B
	0D 8D 2D AD 05 85 25 A5 0F 8F 2F AF 07 87 27 A7
	CD 4D ED 6D C5 45 E5 65 CF 4F EF 6F C7 47 E7 67
	3D BD 1D 9D 35 B5 15 95 3F BF 1F 9F 37 B7 17 97
	FD 7D DD 5D F5 75 D5 55 FF 7F DF 5F F7 77 D7 57
	02 82 22 A2 0A 8A 2A AA 00 80 20 A0 08 88 28 A8
	C2 42 E2 62 CA 4A EA 6A C0 40 E0 60 C8 48 E8 68
	32 B2 12 92 3A BA 1A 9A 30 B0 10 90 38 B8 18 98
	F2 72 D2 52 FA 7A DA 5A F0 70 D0 50 F8 78 D8 58
     > exch get 256 div
    }
   bind
		% Use correct, per-plane screens for CMYK devices only.
   //systemdict /setcolorscreen known processcolors 4 eq and
    { 3 copy 6 copy //setcolorscreen }
    { //setscreen }
   ifelse
} bind def
/.setloresscreen {	% <dpi> .setloresscreen -
  .setloreshalftone
  0 array cvx settransfer	% Genoa CET won't accept a packed array!
  /setstrokeadjust where { pop true setstrokeadjust } if
} bind def
% Use a 45-degree spot screen for high-resolution devices.
/.sethireshalftone {	% <dpi> .sethireshalftone <doscreen>
	% According to information published by Hewlett-Packard,
	% they use a 60 line screen on 300 DPI printers and
	% an 85 line screen on 600 DPI printers.
	% However, we use a 106 line screen, which produces smoother-
	% looking shades but fewer of them (32 vs. 50).
	% 46 was suggested as a good frequency value for printers
	% between 200 and 400 DPI, so we use it for lower resolutions.
	% Imagesetters need even higher frequency screens.
   //systemdict /DITHERPPI known
    { DITHERPPI
    }
    { dup cvi 100 idiv 15 .min
       {null 46 46 60 60 60 106 106 106 106 133 133 133 133 133 150}
      exch get
     }
   ifelse
   1 index 4.01 div .min	% at least a 4x4 cell
   45
	% The following screen algorithm is used by permission of the author.
    { 1 add 180 mul cos 1 0.08 add mul exch 2 add 180 mul cos 
      1 0.08 sub mul add 2 div % (C) 1989 Berthold K.P. Horn
    }
   bind
	% Determine whether we have lots of process colors.
	% If so, don't bother with color screening or gamma correction.
	% Also don't do gamma correction on very high-resolution devices.
	% (This should depend on dot gain, not resolution, but we don't
	% currently have a way to determine this.)
   currentdevice mark
     /RedValues 0 /GreenValues 0 /BlueValues 0 /GrayValues 0
   .dicttomark .getdeviceparams
   counttomark 2 idiv 1 sub { exch pop min } repeat
   exch pop exch pop 32 lt 4 index 800 lt and 5 1 roll
	% Stack: doscreen dpi freq angle proc
	% Ghostscript currently doesn't use correct, per-plane halftones
	% unless setcolorscreen has been executed.  Since these are
	% computationally much more expensive than binary halftones,
	% we check to make sure they are really warranted, i.e., we have
	% a high-resolution CMYK device (i.e., not a display) with
	% fewer than 5 bits per plane (i.e., not a true-color device).
   4 -1 roll 150 ge
    { /setcolorscreen where
       { pop //systemdict /COLORSCREEN known
	  { COLORSCREEN }
	  { 3 index }
	 ifelse
	 dup false ne
	  { 4 1 roll 3 copy 6 copy 13 -1 roll
	% For really high-quality screening on printers, we need to
	% give each plane its own screen angle.  Unfortunately,
	% this currently has very large space and time costs.
	    true eq		% true => different angles,
				% 0 => same angles
	     { { 45 90 15 75 } { 3 1 roll exch pop 12 3 roll } forall
	     }
	    if //setcolorscreen
	  }
	  { pop //setscreen	% false => single binary screen
	  }
	 ifelse
       }
       { //setscreen		% setcolorscreen not known
       }
      ifelse
    }
    { //setscreen			% not high resolution
    }
   ifelse
} bind def
/.sethiresscreen {	% <dpi> .sethiresscreen -
  .sethireshalftone
			% Stack: doscreen
    {	% Set the transfer function to lighten up the grays.
	% We correct at the high end so that very light grays
	% don't disappear completely if they darken <1 screen pixel.
	% Parameter values closer to 1 are better for devices with
	% less dot spreading; lower values are better with more spreading.
	% The value 0.8 is a compromise that will probably please no one!
	%
	% Because of a bug in FrameMaker, we have to accept operands
	% outside the valid range of [0..1].
      { dup dup 0.0 gt exch 1.0 lt and
	 { 0.8 exp dup dup 0.9375 gt exch 0.999 lt and	% > 15/16
	    { .currentscreenlevels 1 sub	% tweak to avoid boundary
	      1 exch div 1 exch sub .min
	    }
	   if
	 }
	if
      }
    }
    {	% Set the transfer function to the identity.
      0 array cvx		% Genoa CET won't accept a packed array!
    }
   ifelse settransfer
   /setstrokeadjust where { pop false setstrokeadjust } if
	% Increase fill adjustment so that we effectively use Adobe's
	% any-part-of-pixel rule.
   0.5 .setfilladjust
} bind def
% Set the default screen and BG/UCR.
/.setdefaultbgucr {
  systemdict /setblackgeneration known {
    { pop 0 } dup setblackgeneration setundercolorremoval
  } if
} bind def
/.useloresscreen {	% - .useloresscreen <bool>
	% Compute min(|dpi x|,|dpi y|) as the definition of the resolution.
  72 72 matrix defaultmatrix dtransform abs exch abs .min
  dup 150 lt //systemdict /DITHERPPI known not and
} bind def

% The following implementation uses LL2 extensions, but only in stopped
% contexts so that with LL1, the .set??reshalftone will be used.
%
%	- .getdefaulthalftone <halftonedict> true	if default found
%			      false			
/.getdefaulthalftone {
  % try the device to see if it has a default halftone
  { currentdevice /HalftoneDefault gsgetdeviceprop } stopped
  { pop pop false }		% no device property
  { dup type /dicttype eq { true } { pop false } ifelse }
  ifelse
  % stack: <halftonedict> true    if default found
  %         false		  not found
  dup not
  { % device did not provide a default, try Resource
    pop { /Default /Halftone /findresource .systemvar exec } stopped 
    { pop pop false } { true } ifelse
  }
  if
} bind def

/.setdefaulthalftone {
  .getdefaulthalftone 
  { sethalftone }
  { % default not found
    .useloresscreen { .setloreshalftone } { .sethireshalftone pop } ifelse
  }
  ifelse
} bind def

/.setdefaultscreen {
  .useloresscreen { .setloresscreen } { .sethiresscreen } ifelse
  .setdefaultbgucr
} bind def

% Load the initialization files for optional features.
%% Replace 4 INITFILES
systemdict /INITFILES known
 { INITFILES { dup runlibfile VMDEBUG } forall
 }
if

% If Level 2 (or higher) functionality is implemented, enable it now.
/.setlanguagelevel where {
  pop 2 .setlanguagelevel
	% If the resource machinery is loaded, fix up some things now.
  /.fixresources where { pop .fixresources } if
} if
/ll3dict where {
  pop 3 .setlanguagelevel
} if

(END INITFILES) VMDEBUG

% Create a null font.  This is the initial font.
8 dict dup begin
  /FontMatrix [ 1 0 0 1 0 0 ] readonly def
  /FontType 3 def
  /FontName () def
  /Encoding StandardEncoding def
  /FontBBox { 0 0 0 0 } readonly def % executable is bogus, but customary ...
  /BuildChar { pop pop 0 0 setcharwidth } bind def
  /PaintType 0 def		% shouldn't be needed!
end
/NullFont exch definefont setfont

% Define NullFont as the font.
/NullFont currentfont def

% Load initial fonts from FONTPATH directories, Fontmap file,
% and/or .getccfont as appropriate.
.loadinitialfonts

% Remove NullFont from FontDirectory, so it can't be accessed by mistake.
/undefinefont where {
  pop /NullFont undefinefont
} {
  FontDirectory /NullFont .undef
} ifelse

(END FONTS) VMDEBUG

% Restore the real definition of runlibfile.
/runlibfile /.runlibfile load def
currentdict /.runlibfile .undef

% Bind all the operators defined as procedures.
/.bindoperators		% binds operators in currentdict
 { % Temporarily disable the typecheck error.
   errordict /typecheck 2 copy get
   errordict /typecheck { pop } put	% pop the command
   currentdict
    { dup type /operatortype eq
       { % This might be a real operator, so bind might cause a typecheck,
	 % but we've made the error a no-op temporarily.
	 .bind		% do a real bind even if NOBIND is set
       }
      if pop pop
    } forall
   put
 } def
NOBIND DELAYBIND or not { .bindoperators } if

% Establish a default environment.

defaultdevice
% The following line used to skip setting of page size and resolution if
% NODISPLAY was selected.  We think this was only to save time and memory,
% and it is a bad idea because it prevents setting the resolution in this
% situation, which pstoedit (among other programs) relies on.
%DISPLAYING not { setdevice (%END DISPLAYING) .skipeof } if
systemdict /DEVICEWIDTH known
systemdict /DEVICEHEIGHT known or
systemdict /DEVICEWIDTHPOINTS known or
systemdict /DEVICEHEIGHTPOINTS known or
systemdict /DEVICEXRESOLUTION known or
systemdict /DEVICEYRESOLUTION known or
systemdict /PAPERSIZE known or
not { (%END DEVICE) .skipeof } if
% Let DEVICE{WIDTH,HEIGHT}[POINTS] override PAPERSIZE.
systemdict /PAPERSIZE known
systemdict /DEVICEWIDTH known not and
systemdict /DEVICEHEIGHT known not and
systemdict /DEVICEWIDTHPOINTS known not and
systemdict /DEVICEHEIGHTPOINTS known not and
 {	% Convert the paper size to device dimensions.
   true statusdict /.pagetypenames get
    { PAPERSIZE eq
       { PAPERSIZE load
         dup 0 get /DEVICEWIDTHPOINTS exch def
         1 get /DEVICEHEIGHTPOINTS exch def
         pop false exit
       }
      if
    }
   forall
    { (Unknown paper size: ) print PAPERSIZE ==only (.) =
    }
   if
 }
if
% Adjust the device parameters per the command line.
% It is possible to specify resolution, pixel size, and page size;
% since any two of these determine the third, conflicts are possible.
% We simply pass them to .setdeviceparams and let it sort things out.
   mark /HWResolution null /HWSize null /PageSize null .dicttomark
   .getdeviceparams .dicttomark begin
   mark
	% Check for resolution.
   /DEVICEXRESOLUTION where dup
    { exch pop HWResolution 0 DEVICEXRESOLUTION put }
   if
   /DEVICEYRESOLUTION where dup
    { exch pop HWResolution 1 DEVICEYRESOLUTION put }
   if
   or { /HWResolution HWResolution } if
	% Check for device sizes specified in pixels.
   /DEVICEWIDTH where dup
    { exch pop HWSize 0 DEVICEWIDTH put }
   if
   /DEVICEHEIGHT where dup
    { exch pop HWSize 1 DEVICEHEIGHT put }
   if
   or { /HWSize HWSize } if
	% Check for device sizes specified in points.
   /DEVICEWIDTHPOINTS where dup
    { exch pop PageSize 0 DEVICEWIDTHPOINTS put }
   if
   /DEVICEHEIGHTPOINTS where dup
    { exch pop PageSize 1 DEVICEHEIGHTPOINTS put }
   if
   or { /PageSize PageSize } if
	% Check whether any parameters were set.
   dup mark eq { pop } { defaultdevice putdeviceprops } ifelse
   end
%END DEVICE
% Set any device properties defined on the command line.
% If BufferSpace is defined but not MaxBitmap, set MaxBitmap to BufferSpace.
systemdict /BufferSpace known
systemdict /MaxBitmap known not and
 { systemdict /MaxBitmap BufferSpace put
 } if
dup getdeviceprops
counttomark 2 idiv
 { systemdict 2 index known
    { pop dup load counttomark 2 roll }
    { pop pop }
   ifelse
 } repeat
counttomark dup 0 ne
 { 2 add -1 roll putdeviceprops }
 { pop pop }
ifelse
% If the initial device parameters are invalid, the setdevice may fail.
% Trap this and produce a reasonable error message.
{ setdevice }		% does an erasepage
DEBUG { exec false } { .internalstopped } ifelse {
  (**** Unable to open the initial device, quitting.) = flush 1 .quit
} if

% If the media size is fixed, update the current page device dictionary.
FIXEDMEDIA
dup { pop systemdict /.currentpagedevice known } if
dup { pop .currentpagedevice exch pop } if
not { (%END MEDIA) .skipeof } if
currentpagedevice dup length dict .copydict
dup /Policies
	% Stack: <pagedevice> <pagedevice> /Policies
1 index /InputAttributes
2 copy get dup length dict .copydict
	% Stack: <pagedevice> <pagedevice> /Policies <pagedevice>
	%   /InputAttributes <inputattrs'>
dup 0 2 copy get dup length dict .copydict
	% Stack: <pagedevice> <pagedevice> /Policies <pagedevice>
	%   /InputAttributes <inputattrs'> <inputattrs'> 0 <attrs0'>
dup /PageSize 7 index /PageSize get
put				% PageSize in 0
put				% 0 in InputAttributes
put				% InputAttributes in pagedevice
% Also change the page size policy so we don't get an error.
	% Stack: <pagedevice> <pagedevice> /Policies
2 copy get dup length dict .copydict
	% Stack: <pagedevice> <pagedevice> /Policies <policies'>
dup /PageSize 7 put		% PageSize in Policies
put				% Policies in pagedevice
.setpagedevice
%END MEDIA
%END DISPLAYING

(END DEVICE) VMDEBUG

% Establish a default upper limit in the character cache,
% namely, enough room for a 18-point character at the resolution
% of the default device, or for a character consuming 1% of the
% maximum cache size, whichever is larger.
mark
	% Compute limit based on character size.
  18 dup dtransform
  exch abs cvi 31 add 32 idiv 4 mul	% X raster
  exch abs cvi mul		% Y
	% Compute limit based on allocated space.
  cachestatus pop pop pop pop pop exch pop 0.01 mul cvi
  .max dup 10 idiv exch
setcacheparams
% Conditionally disable the character cache.
NOCACHE { 0 setcachelimit } if

(END CONFIG) VMDEBUG

% Initialize graphics.

.setdefaultscreen
initgraphics

% The interpreter relies on there being at least 2 entries
% on the graphics stack.  Establish the second one now.
gsave

% Define some control sequences as no-ops.
% This is a hack to get around problems
% in some common PostScript-generating applications.
<04> cvn { } def		% Apple job separator
<0404> cvn { } def		% two of the same
<1b> cvn { } def		% MS Windows LaserJet 4 prologue
				% (UEL = ESC %-12345X)
<1b45> cvn { } def		% PJL reset prologue (ESC E)
<1b451b> cvn { } def		% PJL reset epilogue (ESC E + UEL)
<041b> cvn { } def		% MS Windows LaserJet 4 epilogue (^D + UEL)
(\001M) cvn			% TBCP initiator
 { currentfile /TBCPDecode filter cvx exec
 } bind def
/@PJL				% H-P job control
 { currentfile //=string readline { pop } if
 } bind def

% If we want a "safer" system, disable some obvious ways to cause havoc.
.currentglobal true .setglobal
/SAFETY 1 dict dup /safe false put readonly def
.setglobal

% Convert a path name into a string suitable for filenameforall
% For example: (a\\b*?c) to (a\\\\b\\*\\?c)
/.makepathtemplate {	% str1 -- str2
   dup length dup add string 0	% result string up to twice the size
   0 1 4 index length 1 sub {
     3 index exch get
     dup 92 eq {		% \ -> \\
        2 index 2 index 92
        put
        exch 1 add exch
     } 
     if
     dup 42 eq {		% * -> \*
        2 index 2 index 92
        put
        exch 1 add exch
     } 
     if
     dup 63 eq {		% ? -> \?
        2 index 2 index 92
        put
        exch 1 add exch
     } 
     if
     2 index 2 index 3 -1 roll put 1 add
   } for
   0 exch getinterval exch pop
} bind def

/.locksafe {
  SAFETY /safe get not {
    <<
      /PermitFileReading [
        currentuserparams /PermitFileReading get aload pop
	{ .makepathtemplate 
          dup .filenamedirseparator concatstrings (*) concatstrings 
	  exch		% put string below this procedure
	}
        /LIBPATH .systemvar { 1 index exec } forall
        /FONTPATH .systemvar  { 1 index exec } forall
	currentsystemparams /GenericResourceDir get 1 index exec 
	currentsystemparams /FontResourceDir get exch exec
      ]
      /LockFilePermissions true
    >> setuserparams
  }
  if
  % Pretty much the same as "<< /.LockSafetyParams true >> setpagedevice"
  % but without some of the side effects.
  mark currentdevice null true mark /.LockSafetyParams true .putdeviceparamsonly
  counttomark 2 eq 
  { cleartomark }
  { cleartomark cleartomark pop pop pop
    /invalidaccess /.locksafe signalerror
  } ifelse
  //SAFETY /safe //true .forceput % overrides readonly
 } .bind executeonly odef

/.setsafe
{
  SAFETY /safe get not {
    <<
      PARANOIDSAFER {		% only PARANOIDSAFER locks down reading files
        /PermitFileReading [ ]
      } if
      /PermitFileWriting [ ]
      /PermitFileControl [ ]
    >> setuserparams
  }
  if
  .locksafe
  } .bind executeonly odef

% If we are running in SAFER mode, lock things down
SAFER { .setsafe } if

% If we delayed binding, make it possible to do it later.
/.bindnow {
  //systemdict begin .bindoperators end
  % Temporarily disable the typecheck error.
  errordict /typecheck 2 copy get
  errordict /typecheck { pop } put	% pop the command
  0 1 .delaycount 1 sub { .delaybind exch get .bind pop } for
  //systemdict /.delaybind {} .forceput	% reclaim the space
  //systemdict /.bindnow .forceundef	% ditto
  put
  //systemdict /.forcedef .forceundef		% remove temptation
  //systemdict /.forceput .forceundef		% ditto
  //systemdict /.forceundef .forceundef		% ditto
} .bind odef

% Turn off array packing, since some PostScript code assumes that
% procedures are writable.
false setpacking

(END INIT) VMDEBUG

/.currentuserparams where {
  pop
	% Remove real user params from psuserparams.
  mark .currentuserparams counttomark 2 idiv {
    pop psuserparams exch undef
  } repeat pop
	% Update the copy of the user parameters.
  mark .currentuserparams counttomark 2 idiv {
    userparams 3 1 roll .forceput	% userparams is read-only
  } repeat pop
	% Turn on idiom recognition, if available.
  currentuserparams /IdiomRecognition known {
    /IdiomRecognition true .definepsuserparam
  } if
  psuserparams readonly pop
  systemdict /.definepsuserparam undef
	% Save a copy of userparams for use with save/restore
	% (and, if implemented, context switching).
  .currentglobal false .setglobal
     mark userparams { } forall .dicttomark readonly
     /userparams exch .forcedef		% systemdict is read-only
  .setglobal
} if
/.currentsystemparams where {
  pop
	% Remove real system params from pssystemparams.
  mark .currentsystemparams counttomark 2 idiv {
    pop pssystemparams exch .forceundef
  } repeat pop
} if

% Conditionally turn image interpolation on or off.
currentdict /INTERPOLATE known not { (%END INTERPOLATE) .skipeof } if

/.interpolate {
  dup /Interpolate .knownget not { //false } if
  /INTERPOLATE .systemvar ne {
    dup gcheck .currentglobal exch .setglobal
    exch dup length dict copy
    dup /Interpolate /INTERPOLATE .systemvar put
    exch .setglobal
  } if
} bind odef

/colorimage
  { /INTERPOLATE .systemvar
      { .currentglobal                    % w h bit [] {}...{} multi ncomp glob
        //false .setglobal
        9 dict begin                      % w h bit [] {}...{} multi ncomp glob
        2 index { 1 index 7 add } { 8 } ifelse
        copy gsave pop                    % preserve the arguments
        { 0 /DeviceGray 0 /DeviceRGB /DeviceCMYK }
        1 index get setcolorspace         % ... glob w h bit [] {}...{} multi ncomp
        {0 1 0 1 0 1 0 1}
        1 index 2 mul 0 exch              % ... glob w h bit [] {}...{} multi ncomp {0 1 ...} 0 2*ncomp
        getinterval /Decode exch def      % ... glob w h bit [] {}...{} multi ncomp
        exch dup                          % ... glob w h bit [] {}...{} ncomp multi multi
        /MultipleDataSources exch def     % ... glob w h bit [] {}...{} ncomp multi
        { array astore} { pop } ifelse    % ... glob w h bit [] [{}...{}]
        /DataSource exch def              % ... glob w h bit []
        /ImageMatrix exch def             % ... glob w h bit
        /BitsPerComponent exch def        % ... glob w h
        /Height exch def                  % ... glob w
        /Width exch def                   % ... glob 
        /ImageType 1 def
        /Interpolate //true def
        .setglobal currentdict end        % ... <<>>
        image grestore
        exch { 4 add } { 6 } ifelse
        { pop } repeat                    % -
      }
      { colorimage
      }
    ifelse
  } bind odef

/image
  { dup type /dicttype eq
      { dup /ImageType get 3 eq
          { .currentglobal //false .setglobal exch
            dup length dict copy begin .setglobal 
            /DataDict DataDict .interpolate def
            /MaskDict MaskDict .interpolate def
            currentdict end
          }
          { .interpolate 
          }
        ifelse
        image
      }
      { /INTERPOLATE .systemvar
          { .currentglobal //false .setglobal
            8 dict begin .setglobal
            /ImageType 1 def
            /DataSource 1 index def
            /ImageMatrix 2 index def
            /BitsPerComponent 3 index def
            /Decode {0 1} def
            /Height 4 index def
            /Width 5 index def
            /Interpolate //true def
            currentdict end
            gsave /DeviceGray setcolorspace image grestore
            5 { pop } repeat
          }
          { image
          }
        ifelse
      }
    ifelse
  } bind odef

/imagemask {
  dup type /dicttype eq {
    .interpolate imagemask
  } {
    /INTERPOLATE .systemvar {
      .currentglobal //false .setglobal
      8 dict begin .setglobal
      /ImageType 1 def
      /DataSource 1 index def
      /ImageMatrix 2 index def
      /BitsPerComponent 1 def
      2 index { {1 0} } { {0 1} } ifelse /Decode exch def
      /Height 4 index def
      /Width 5 index def
      /Interpolate //true def
      currentdict end imagemask 5 { pop } repeat
    } {
      imagemask
    } ifelse
  } ifelse
} bind odef

currentdict /.interpolate undef

%END INTERPOLATE

% Establish local VM as the default.
false /setglobal where { pop setglobal } { .setglobal } ifelse
$error /.nosetlocal false put

(END GLOBAL) VMDEBUG

/.savelocalstate where {
	% If we might create new contexts, save away copies of all dictionaries
	% referenced from systemdict that are stored in local VM,
	% and also save a copy of the initial gstate.
  pop .savelocalstate
} {
	% If we're *not* running in a multi-context system and FAKEFONTS is
	% defined, add the fake fonts to LocalFontDirectory.
  .definefakefonts	% current VM is local
} ifelse

% Remove systemdict entries for things that have been bound in where used
% and that shouldn't be accessible by name, and close up systemdict.
currentdict /filterdict .undef
currentdict /.cidfonttypes .undef
currentdict /.colorrenderingtypes .undef
currentdict /.formtypes .undef
currentdict /.halftonetypes .undef
currentdict /.imagetypes .undef
currentdict /.imagemasktypes .undef
currentdict /.patterntypes .undef
currentdict /.shadingtypes .undef
currentdict /.wheredict .undef
end

% Clean up VM, and enable GC.
/vmreclaim where
 { pop NOGC not { 2 vmreclaim 0 vmreclaim } if
 } if
DELAYBIND not {
  systemdict /.forcedef .undef		% remove temptation
  systemdict /.forceput .undef		% ditto
  systemdict /.forceundef .undef	% ditto
} if
WRITESYSTEMDICT not { systemdict readonly pop } if

(END GC) VMDEBUG

% The interpreter will run the initial procedure (start).