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% Copyright (C) 2001-2024 Artifex Software, Inc.
% All Rights Reserved.
%
% This software is provided AS-IS with no warranty, either express or
% implied.
%
% This software is distributed under license and may not be copied,
% modified or distributed except as expressly authorized under the terms
% of the license contained in the file LICENSE in this distribution.
%
% Refer to licensing information at http://www.artifex.com or contact
% Artifex Software, Inc., 39 Mesa Street, Suite 108A, San Francisco,
% CA 94129, USA, for further information.
%
% 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.
%
% For reasons not clear to me, some cases of %% are being treated as
% DSC comments when (and only when) the resource files are disk based
% This can kill DSC parsing for pdfwrite at least, so avoid using
% double % comments in this 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.
% Interpreter library version number
% NOTE: the interpreter code requires that the first non-comment token
% in this file be an integer, and that it match the compiled-in version!
10040
% Check the interpreter revision.
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 }ifelsesystemdict exch { % userdict wasn't already set up by iinit.c.
dup /userdict currentdict dup 200 .setmaxlength % userdict
.forceput % userdict is local, systemdict is global
} executeonlyif begin
% Init to global memory (possibly not needed, but left in for legacy purposes)
//true .setglobal
% Define .languagelevel if needed.
systemdict /.languagelevel known not { /.languagelevel 1 def } if
% Optionally choose a default paper size other than U.S. letter.
% The default page size for many devices is set at compile time to
% letter, but this can be changed to A4 although this is rarely done.
% Some devices such as bbox have a different default page size,
% and should not be set to A4 or letter.
% When ghostscript is used in countries that use the international
% standard page size A4 rather than US letter, the page size of
% devices that default to letter or A4 can be changed by setting
% DEFAULTPAPERSIZE.
% /DEFAULTPAPERSIZE (a4) def
% 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
% if DEBUG is set, set ALL of the subset debugging flags
mark % '[' isn't defined yet
/CCFONTDEBUG % Compiled Fonts
/CFFDEBUG % CFF Fonts
/CMAPDEBUG % CMAP
/DOCIEDEBUG % CIE color
/EPSDEBUG % EPS handling
/FAPIDEBUG % Font API
/INITDEBUG % Initialization
/PDFDEBUG % PDF Interpreter
/PDFWRDEBUG % PDF Writer
/SETPDDEBUG % setpagedevice
/TTFDEBUG % TTF Fonts
/VGIFDEBUG % ViewGIF
/VJPGDEBUG % ViewJPEG
/RESMPDEBUG % Resource map
counttomark array astore exch pop % ']' isn't defined yet
{ dup currentdict exch known DEBUG or def } forall
currentdict /PDFSTEP known /PDFSTEP exch def% if PDFSTEP is on, turn on PDFDEBUG
PDFSTEP { /PDFDEBUG //true def } if
currentdict /PDFSTOPONERROR known /PDFSTOPONERROR exch defcurrentdict /PDFSTOPONWARNING known {/PDFSTOPONWARNING //true def /PDFSTOPONERROR //true def}{/PDFSTOPONWARNING //false def} ifelsecurrentdict /PDFNOCIDFALLBACK known /PDFNOCIDFALLBACK exch def
% Versions of bind for use during startup:
% bind - normal "bind", honors DELAYBIND
% .bind - normal "bind", but ignores DELAYBIND
% .internalbind - as "bind" but forces the executeonly attribute
% .forcebind - as ".bind" but forces the executeonly attribute
%
% In general, for security and consistency startup code should use
% .internalbind or .forcebind, and only use bind/.bind when we
% cannot enforce executeonly on a given proc
/.bind /bind load def/.internalbind {bind executeonly} .bind 1 index exch .makeoperator def/.forcebind {.bind executeonly} .bind 1 index exch .makeoperator def
/VMDEBUG INITDEBUG {{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 .forcebind def
% This was a debugging switch removed in 9.22, no other software
% should have had any regard for it, and even if testing its value
% should have checked its existence first. However pstotext, an
% ancient and no longer maintained piece of softare, did check
% its value unconditionally. So we retain this key in the dictionary
% purely for backward compatibility.
/NOBIND //false def
currentdict /BATCH known /BATCH exch defcurrentdict /DELAYBIND known /DELAYBIND exch defcurrentdict /DOINTERPOLATE .knownget { { -1 } { 1 } ifelse /InterpolateControl exch def } ifcurrentdict /NOINTERPOLATE .knownget { { 0 } { 1 } ifelse /InterpolateControl exch def } ifcurrentdict /ESTACKPRINT known /ESTACKPRINT exch defcurrentdict /FAKEFONTS known /FAKEFONTS exch defcurrentdict /FIXEDMEDIA known /FIXEDMEDIA exch defcurrentdict /FIXEDRESOLUTION known /FIXEDRESOLUTION exch defcurrentdict /LOCALFONTS known /LOCALFONTS exch defcurrentdict /JOBSERVER known /JOBSERVER exch defcurrentdict /NOCACHE known /NOCACHE exch defcurrentdict /NOCCFONTS known /NOCCFONTS exch defcurrentdict /NOCIE known /NOCIE exch defcurrentdict /NOPSICC known /NOPSICC exch defcurrentdict /NODISPLAY known not /DISPLAYING exch defcurrentdict /NOFONTMAP known /NOFONTMAP exch defcurrentdict /NOFONTPATH known /NOFONTPATH exch defcurrentdict /NOGC known /NOGC exch defcurrentdict /NOMEDIAATTRS known /NOMEDIAATTRS exch defcurrentdict /NOOUTERSAVE known /NOOUTERSAVE exch defcurrentdict /NOPAGEPROMPT known /NOPAGEPROMPT exch defcurrentdict /NOPAUSE known /NOPAUSE exch defcurrentdict /NOPLATFONTS known /NOPLATFONTS exch defcurrentdict /NOPROMPT known /NOPROMPT exch defcurrentdict /NOTRANSPARENCY known /NOTRANSPARENCY exch defcurrentdict /DOPS known /DOPS exch defcurrentdict /NOSUBSTDEVICECOLORS known /NOSUBSTDEVICECOLORS exch def% The default value of ORIENT1 is true, not false.
currentdict /ORIENT1 known not { /ORIENT1 //true def } ifcurrentdict /OSTACKPRINT known /OSTACKPRINT exch defcurrentdict /OUTPUTFILE known % obsolete
{ /OutputFile /OUTPUTFILE load def currentdict /OUTPUTFILE .undef } ifcurrentdict /QUIET known /QUIET exch def% DELAYSAFER is effectively the same as newer NOSAFER
currentdict /DELAYSAFER known { /DELAYSAFER //true def /NOSAFER //true def } if/SAFER currentdict /NOSAFER known { //false} { //true}ifelse def
/OLDSAFER currentdict /OLDSAFER known def
/SAFERERRORScurrentdict /NOSAFERERRORS known{ //false}{ currentdict /SAFERERRORS known} ifelse def
currentdict /ALLOWPSTRANSPARENCY known not{ /ALLOWPSTRANSPARENCY //false def} if
currentdict /SHORTERRORS known /SHORTERRORS exch defcurrentdict /TTYPAUSE known /TTYPAUSE exch defcurrentdict /WRITESYSTEMDICT known /WRITESYSTEMDICT exch defcurrentdict /RENDERTTNOTDEF known /RENDERTTNOTDEF exch defcurrentdict /SCANCONVERTERTYPE known{ currentdict /SCANCONVERTERTYPE get .setscanconverter} if
currentdict /EPSFitPage known { /PSFitPage //true def } if% This is a "convenience" option that sets a combination of EPSFitPage, PDFFitPage and PSFitPage
currentdict /FitPage known { /EPSFitPage //true def /PDFFitPage //true def /PSFitPage //true def } if
currentdict /SimulateOverprint known { (\n**** -dSimulateOverprint={true|false} is no longer supported. ****\n) print (**** It has been replaced by -dOverprint={enable|disable|simulate} ****\n\n) print % Set the new variable appropriately.
/Overprint SimulateOverprint { /enable } { /disable } ifelse def} if
% 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 300000 .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 } .forcebind 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 } .forcebind defend
% 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 (GPL Ghostscript) search { pop pop pop (This software is supplied under the GNU AGPLv3 and comes with NO WARRANTY:\nsee 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 ( \() .revisionstring ( ) product counttomark { (%stdout) (w) file exch 0 .writecvp } repeat pop } .forcebind def
QUIET not { //printgreeting exec flush } ifcurrentdict /printgreeting .undef
% Define a special version of def for making operator procedures.
/obind { % <name> <proc> obind <name> <oper>
1 index exch .makeoperator} .forcebind def/odef { % <name> <proc> odef -
1 index exch .makeoperator def} .forcebind def
% Define procedures for accessing variables in systemdict and userdict
% regardless of the contents of the dictionary stack.
/.systemvar { % <name> .systemvar <value>
//systemdict exch get} .forcebind odef/.systemexec { .systemvar exec} .forcebind odef/.userdict { % - .userdict <dict>
/userdict .systemvar} .forcebind odef/.uservar { % <name> .uservar <value>
.userdict exch get} .forcebind odef
% If we're delaying binding, remember everything that needs to be bound later.
DELAYBIND{ SAFER { (\n *** WARNING - you have selected SAFER, indicating you want Ghostscript\n) print ( to execute in a safer environment, but at the same time\n) print ( have selected DELAYBIND. Unless you use this option with\n) print ( care \(and specifically, remember to call .bindnow\) it is\n) print ( possible that malicious code may be able to evade the\n) print ( limited security offered by the SAFER option.\n) print flush } if .currentglobal //false .setglobal systemdict /.delaybind 2000 array .forceput systemdict /.delayinternalbind 2000 array .forceput .setglobal userdict /.delaycount 0 put userdict /.delayinternalcount 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 cvx exec } ifelse } .forcebind odef
/.internalbind { /.delayinternalbind .systemvar dup length 0 ne { .delayinternalcount 2 index put .userdict /.delayinternalcount .delayinternalcount 1 add put } { pop /.forcebind cvx exec } ifelse } .forcebind odef} executeonly if
.currentglobal //true .setglobal/.undefinternalnameslist 10 dict def.setglobal
% Under normal operation .undefinternalnames simply removes
% the keys in the array parameter from the dictionary parameter.
% Under DELAYBIND operation, we accumulate the names in dictionaries,
% stored in .undefinternalnameslist, and then .bindow calls
% .applyundefinternalnames once all binds have been applied.
% The .undefinternalnameslist dictionary is a little odd in that it
% uses the dictionary from which the keys should be undefined as the
% 'key' and then the value is a dictionary whose key/value pairs are
% both the names to be undefined.
%
% [array of names] <<dict from which to undef>> .undefinternalnames -
/.undefinternalnames{ DELAYBIND { .currentglobal //true .setglobal 3 1 roll dup //.undefinternalnameslist exch .knownget not { 128 dict dup 3 1 roll //.undefinternalnameslist 3 1 roll put }{exch pop} ifelse exch { dup 2 index 3 1 roll put } forall pop .setglobal } { exch { 1 index exch .forceundef } executeonly forall pop } executeonly ifelse} .forcebind def
/.applyundefinternalnames{ //.undefinternalnameslist { { pop 1 index exch .forceundef } executeonly forall pop } executeonly forall} .forcebind def
%**************** 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} .internalbind odefcurrentdict /hwsizedict .undef/getdeviceprops { //null .getdeviceparams } .internalbind odef
% NOTE: Note sure why/if this needs to be a separate operator. Consider rolling this
% implementation into /putdeviceprops ?
/.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 .systemvar exch signalerror } if } .internalbind odef/.writecvs { 0 .writecvp } .internalbind odef
%**************** DEPRECATED PROCEDURES ****************
%**************** DO NOT USE THESE IN NEW CODE ****************
% Keeping these because they have been around a long time and we don't want to break old code that's out in the wild
/max { .max } .internalbind def % use .max instead
/min { .min } .internalbind def % use .min instead
%**************** END OF BACKWARD COMPATIBILITY SECTION ****************
% Utility for removing all entries from a dictionary
/.PurgeDict % <dict> .PurgeDict -
{ { //true 1 index { pop exch pop //false exit } forall { exit } if 1 index exch undef } loop pop} .internalbind def
% 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%
% - initgraphics -
%
% Although the internal routine gs_initgraphics resets the color space,
% it does not reset the color space we store in the 'interpreter'
% graphics state (so that we can hand it back in currentcolorspace).
% So we need to do that in the PostScript world.
%
%
/initgraphics { initgraphics systemdict /DeviceGray_array get setcolorspace }.forcebind odef
/currentmatrix { dup type /arraytype ne { /currentmatrix load /typecheck signalerror } if dup length 6 ne { /currentmatrix load /rangecheck signalerror } if .currentmatrix 6 .argindex astore pop} odef
% We have to guard against the BeginPage procedure not popping its operand.
% This is really stupid, but the Genoa CET does it.
/.beginpage { % - .beginpage -
.updatematrices .currentshowpagecount { .currentpagedevice pop dup //null ne { /BeginPage .knownget } { pop //false } ifelse { % Stack: ... pagecount proc
count 2 .execn % Stack: ... ..???.. oldcount
count 1 add exch sub { pop } repeat } { pop } ifelse } if} .forcebind odef
% Guard similarly against EndPage not popping its operand.
/.endpage { % <reason> .endpage <print_bool>
.updatematrices .currentshowpagecount { 1 index .currentpagedevice pop dup //null ne { /EndPage .knownget } { pop //false } ifelse { % Stack: ... reason pagecount reason proc
count 2 .execn % Stack: ... ..???.. print oldcount
count 2 add exch sub { exch pop } repeat } { pop pop 2 ne } ifelse } { 2 ne } ifelse} .forcebind odef
% Define .currentnumcopies so it consults the NumCopies device parameter.
/.numcopiesdict mark /NumCopies dup.dicttomark readonly def/.currentnumcopies { currentdevice //.numcopiesdict .getdeviceparams dup type /integertype eq { exch pop exch pop } { cleartomark #copies } ifelse} .forcebind odef
/setcolorscreen where { pop % not in all Level 1 configurations
/currentcolorscreen { .currenthalftone { { 60.0 exch 0.0 exch 3 copy 6 copy } % halftone - not possible
{ 3 copy 6 copy } % screen
{ } % colorscreen
} exch get exec } odef} if/currentscreen { .currenthalftone { { 60.0 exch 0.0 exch } % halftone - not possible
{ } % screen
{ 12 3 roll 9 { pop } repeat } % colorscreen
} exch get exec } odef/.echo /echo load defuserdict /.echo.mode //true put/echo {dup /.echo.mode exch store .echo} odef/.eexec_param_dict mark /eexec //true /seed 55665.dicttomark readonly def/eexec { % Rebind .currentresourcefile if it is the source for the eexec.
dup //.eexec_param_dict //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% 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 currentoverprint //false setoverprint 1 setgray .fillpage setoverprint exec } odef% Define a procedure for clearing the error indication.
/.clearerror { $error /newerror //false put $error /errorname //null put $error /errorinfo //null put 0 .setoserrno } .internalbind def
% To satisfy the Genoa FTS, executive must be a procedure, not an operator.
% 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 .systemvar exec flush //true } { //false } ifelse} .internalbind def% Define an execute analogue of runlibfile0.
/execute0 { % <obj> execute0 -
//.execute exec { /execute0 cvx 1 .quit } if} .internalbind def/executive { { prompt { (%statementedit) (r) .systemvmfile } stopped { pop pop $error /errorname get /undefinedfilename eq { //.clearerror exec exit } if % EOF
/handleerror .systemvar exec //null % ioerror??
} if cvx { .runexec } //.execute exec pop } loop } .internalbind defcurrentdict /.execute .undef
/filter { //filterdict 1 .argindex .knownget { exch pop exec } { /filter .systemvar /undefined signalerror } ifelse } odef% 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 } .internalbind def% handleerror procedure as mentioned in the "Operators" section of the PLRM Section 8.2
% This invokes the handleerror procedure from errordict (unless we are running under a
% JOBSERVER where we want to always use a defined error handler (many error handlers in
% 'wild' PostScript files are broken and don't indicate the error in any useful fashion).
%
% We run the handleerror procedure using .internalstopped so that broken error handlers
% won't cause nested errors (Unexpected Error conditions).
/handleerror //systemdict /JOBSERVER get{ { /.GShandleerror .systemvar //.internalstopped exec pop } .internalbind % always use .GShandleerror.
} { { /errordict .systemvar /handleerror get //.internalstopped exec pop } .internalbind % PLRM standard errorhandling
} ifelse def/identmatrix [1.0 0.0 0.0 1.0 0.0 0.0] readonly def/identmatrix { dup type /arraytype ne { /identmatrix load /typecheck signalerror } if dup length 6 ne { /identmatrix load /rangecheck signalerror } if dup 0 //identmatrix putinterval} odef/languagelevel 1 def % gs_lev2.ps may change this
/makeimagedevice { //false makewordimagedevice } odef/matrix { 6 array identmatrix } odef
/.promptmsg { (GS) print count 0 ne { (<) print count =only } if (>) print flush} .internalbind def/prompt { flush flushpage //systemdict /NOPROMPT get not { //.promptmsg exec} if } .internalbind defcurrentdict /.promptmsg .undef
/pstack { 0 1 count 3 sub { index == } for } .internalbind def/putdeviceprops { .putdeviceprops { erasepage } if } .internalbind odef/quit { /quit load 0 .quit } odef/run { dup type /filetype ne { (r) .systemvmfile } if % We must close the file when execution terminates,
% regardless of the state of the stack,
% and then propagate an error, if any.
cvx //null {.runexec} .errorexec } 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} .internalbind def/.runexec2 { % <continue> <file|fileproc> .runexec2 -
exch { .runexec } { dup type /filetype ne { cvx exec } if closefile } ifelse} .internalbind def/.runexec { % <file|fileproc> .runexec -
cvlit /.runexec1 cvx 1 index /.runexec2 cvx 4 .execn} .internalbind def% The following is only for compatibility with Adobe interpreters.
/setdash { 0 .argindex type dup /integertype eq exch /realtype eq or not { /setdash .systemvar /typecheck signalerror } if //setdash} odef/setdevice { .setdevice { mark { % Reset the halftone since the device may differ
currenthalftone dup type /dicttype eq { sethalftone } { pop } ifelse } stopped cleartomark erasepage } if }odef/setlinecap { dup 2 gt { /setlinecap .systemvar /rangecheck signalerror } if .setlinecap} odef/setlinejoin { dup 2 gt { /setlinejoin .systemvar /rangecheck signalerror } if .setlinejoin} odef/setmatrix { dup type /arraytype ne { dup type /packedarraytype ne { /setmatrix load /typecheck signalerror } if } if dup length 6 ne { /setmatrix load /rangecheck signalerror } if dup aload pop .setmatrix pop} odef
/.confirmread { //systemdict /TTYPAUSE get { (/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} .internalbind def
/.confirm { //systemdict /DISPLAYING get //systemdict /NOPAUSE get not //systemdict /TTYPAUSE get 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.
//systemdict /NOPAGEPROMPT get //systemdict /NOPROMPT get or { pop } { print flush } ifelse //.confirmread exec } { pop } ifelse} .internalbind def
% In LanguageLevel 3, copypage erases the page.
/copypage { .languagelevel 3 ge dup { 0 } { 1 } ifelse .endpage .doneshowpage { .currentnumcopies 1 index .outputpage (>>copypage, press <return> to continue<<\n) //.confirm exec dup { erasepage } if } if pop systemdict /..page_default_spaces .knownget { //.PurgeDict exec } if .beginpage} .forcebind odef
/showpage { 0 .endpage .doneshowpage { .currentnumcopies //true .outputpage (>>showpage, press <return> to continue<<\n) //.confirm exec % Uncomment the following line, and use a Memento build to track
% blocks that are created and not destroyed between each successive
% page.
% 2 .vmreclaim .mementolistnewblocks
initgraphics currentoverprint //false setoverprint 1 setcolor .fillpage setoverprint 0 setcolor } { initgraphics } ifelse systemdict /..page_default_spaces .knownget { //.PurgeDict exec } if .beginpage} .forcebind 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 } .internalbind def/start { //systemdict /BATCH get { //null 0 .quit } { executive } ifelse } def/store { % Don't alter operands before completing.
1 .argindex where { 2 index 2 index put pop pop } { def } ifelse} odef/.typenames mark .typenames counttomark packedarray exch pop def/type { //.typenames .type} odefcurrentdict /.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 .argindex .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.
/.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} defsystemdict /internaldict dup .makeinternaldict .makeoperator.forceput % proc is local, systemdict is global
currentdict /.makeinternaldict .undef
% 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 } .internalbind def/copyarray { dup length array copy } .internalbind 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 } .internalbind def/findlibfile { .systemvmlibfile { dup .filename pop exch //true } { //false } ifelse} odef/.growdictlength % get size for growing a dictionary
{ length 3 mul 2 idiv 1 add } .internalbind def/.growdict % grow a dictionary
{ dup //.growdictlength exec .setmaxlength } .internalbind def/.growput % put, grow the dictionary if needed
{ 2 index length 3 index maxlength eq { 3 copy pop known not { 2 index //.growdict exec} if } if put } .internalbind def% .localvmarray may be an operator: see zsysvm.c.
/.localvmarray where { pop} { /.localvmarray { .currentglobal //false .setglobal exch array exch .setglobal } .internalbind def} ifelse/.localvmdict where { pop} { /.localvmdict { .currentglobal //false .setglobal exch dict exch .setglobal } .internalbind def} ifelse/.packtomark { counttomark packedarray exch pop } .internalbind def/runlibfile { % We don't want to .internalbind 'run' into this procedure,
% since run may get redefined.
findlibfile { exch pop /run .systemvar exec } { /undefinedfilename signalerror } ifelse } .internalbind def/selectdevice { finddevice setdevice .setdefaultscreen } .internalbind odef/signalerror % <object> <errorname> signalerror -
{ /errordict .systemvar exch get exec } .internalbind def/signaloperror { % <object> <errorname> signaloperror -
% Same as signalerror, except that if we are inside a pseudo-operator
% or .errorexec, we use its error object, just as errors generated by
% real operators do.
/errordict .systemvar exch get .finderrorobject { 3 -1 roll pop exch } if exec} .internalbind 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} .internalbind def/write= { 1 index exch write=only (\n) writestring} .internalbind def/=only { (%stdout) (w) file exch write=only } .internalbind odef/= { =only (\n) print } .internalbind def/=print /=only load def% Temporarily define == as = for the sake of runlibfile0.
/== /= load def
% Function to purge a named device from the device cache. This is required if we
% want to 'reset' a device. The setpagedevice implementation, when it creates a
% device instance, stores it in a cache. Next time we select a device we look in
% the cache and, if we find we cached it, then we use the cached device.
%
% Presumably this is intended as an optimisation, but it defeats the expected use
% of save and restore wihth devices because, after we restore a device away it is
% not destroyed, it is in the cache. Requesting the same named device will return
% the cached device, crucially *without* resetting any of its parameters. In
% particular NumPages which is used to number output files and is a read-only parameter.
%
% /name uncachedevice -
%
/uncachedevice{ % Check we've been given a name
dup type /nametype eq { % Check the name isn't the current device. Check both /Name
% and /OutputDevice. There seem to be some conditions where
% only one is present.
%
currentpagedevice /Name known { dup currentpagedevice /Name get eq } { //false }ifelse currentpagedevice /OutputDevice known { 1 index currentpagedevice /OutputDevice get eq } { //false }ifelse
% We tested /Name and /OutputDevice to see if they exist, if they do
% we checked them against the requested device. If either matches the requested
% device we report an error, otherwise we remove the device from the cache.
%
or { (*** ERROR: Can't uncache the current device\n) print /uncachedevice /invalidaccess signalerror } { % Make sure devicedict exists, if it does not, ignore
% the request because this code doesn't know how to
% deal with this PostScript itnerpreter.
/devicedict where { % Get devicedict out of its containing dictionary
/devicedict get dup % stack: /device -devicedict- -devicedict-
% Check if the device we were given is known
2 index known % stack: /device -devicedict- bool
{ % device was known, get the key/value pair from devicedict
dup 2 index get % stack: /device -devicedict- value
% We expect the value in devicedict to be an array, check it is
dup type /arraytype eq { dup 1 null put % stack: /device -devicedict- [-device- null]
3 -1 roll exch % stack: -devicedict- /device [-device- null]
put % stack: -
} { % Value in devicedict associated with the named key is not an array
/uncachedevice /typecheck signalerror } ifelse } { % The named key is not present in devicedict
/uncachedevice /undefined signalerror } ifelse } if } ifelse } { % The parameter we were given wasn't a name type
/uncachedevice /typecheck signalerror } ifelse} bind readonly odef
% Function to purge all but the current device from the device cache
%
% - purgedevicecache -
%
/purgedevicecache{ % Find devicedict, if it doesn't exist just exit silently, we don't know
% how to deal with this PostScript interpreter
/devicedict where { % Get devicedict from the containing dictionary
/devicedict get % For each key/value pair in devicedict
{ pop % Discard the value
dup currentpagedevice /Name get eq not % Check if the key is the same as the current device
{ uncachedevice % If not, purge the device from the cache
} { pop % Don't purge the current device
} ifelse } forall } if} bind readonly 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 //false .copydevice2 1 exch put exch .setglobal } if 1 get} .internalbind odef
% The following procedures are documented.
% 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} .internalbind def/.runresource { % <file> .runresource -
{ /run .systemvar exec } .execasresource} .internalbind def
% Convenience function (documented extension)
/.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 } .internalbind 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} .internalbind 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 { 0 0 .systemvmstring .systemvmSFD cvx { .runexec } execute0} .internalbind def
% Define the procedure that the C code uses to set up for executing
% a string that may be received in pieces.
%
% Immediate evaluation doesn't work on operators (like .needinput)
% so calling .runstringbegin will throw an undefined error if we
% undefined .needinput so it cannot be accessed outside the init
% code. But, we can store the operator in an array, use immediate
% evaluation on the array to get the operator, then undefined the
% array (and because they are both of the same name, the operator
% get undefined too).
% This prevents random Postscript from erroneously calling .needinput
% and forcing the interpreter into an invalid state.
/.needinput1 .systemvmarray dup 0 /.needinput load putdef/.runstringbegin { 1 .systemvmarray dup 0 //.needinput 0 get put cvx % { .needinput } in systemvm
0 0 .systemvmstring .systemvmSFD cvx .runexec} .internalbind def
% Define a special version of runlibfile that aborts on errors.
/runlibfile0 { cvlit dup 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 } 0 get 3 -1 roll 2 array astore cvx exec /.currentfilename exch store { (While reading ) print .currentfilename print (:\n) print flush /handleerror .systemvar exec /runlibfile0 1 .quit } if } .internalbind def% Temporarily substitute it for the real runlibfile.
/.runlibfile /runlibfile load def/runlibfile //runlibfile0 defcurrentdict /runlibfile0 .undef
% 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 //systemdict /SHORTERRORS get { (%%[ Error: ) print =only flush (; OffendingCommand: ) print =only ( ]%%) = } { (Unrecoverable error: ) print =only flush ( in ) print =only (\n) print flush count 2 gt { (Operand stack:\n ) print count 1 sub -1 2 { ( ) print index =only flush } for (\n) =only 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 } .internalbind def/.acquire_$error { //systemdict /$error get} .internalbind def
/.errorhandler % <command> <errorname> .errorhandler -
{ % Detect an internal 'stopped'.
1 .instopped { //null eq { pop pop stop } if } if //.acquire_$error exec /.inerror get 1 .instopped { pop } { pop //true } ifelse { //.unstoppederrorhandler exec } if % detect error recursion
//.acquire_$error exec /globalmode .currentglobal //false .setglobal put //.acquire_$error exec /.inerror //true put //.acquire_$error exec /newerror //true put //.acquire_$error exec exch /errorname exch put //.acquire_$error exec exch /command exch put //.acquire_$error exec /errorinfo known not { //.acquire_$error exec /errorinfo //null put } if //.acquire_$error exec /recordstacks get //.acquire_$error exec /errorname get /VMerror ne and { % Attempt to store the stack contents atomically.
count array astore dup //.acquire_$error exec /ostack 4 -1 roll % Grab the execstack, then remove to two elements that are from
% this error handler (not interesting).
countexecstack array execstack dup length 2 sub 0 exch getinterval //.acquire_$error exec /estack 3 -1 roll countdictstack array dictstack //.acquire_$error exec /dstack 3 -1 roll put put put aload pop } { //.acquire_$error exec /dstack .undef //.acquire_$error exec /estack .undef //.acquire_$error exec /ostack .undef } ifelse //.acquire_$error exec /position currentfile status { currentfile { fileposition } //.internalstopped exec { pop //null } if } { % If this was a scanner error, the file is no longer current,
% but the command holds the file, which may still be open.
//.acquire_$error exec /command get dup type /filetype eq { { fileposition } //.internalstopped exec { pop //null } if } { pop //null } ifelse } ifelse put % During initialization, we don't reset the allocation
% mode on errors.
//.acquire_$error exec /globalmode get //.acquire_$error exec /.nosetlocal get and .setglobal //.acquire_$error exec /.inerror //false put stop } .internalbind defcurrentdict /.unstoppederrorhandler .undef
% 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_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 $error?
{ 4 1 roll % stack: <stack> <head> <==flag> <over>
/errordict .systemvar exch .knownget % overridename defined?
{ exch pop exch pop exec % call override with <stack>
} { exch print exch % print heading. stack <==flag> <stack>
1 index not { (\n) =only } if { 1 index { (\n ) } { ( ) } ifelse print dup type /dicttype eq { (--dict:) print dup rcheck { dup length =only (/) print dup maxlength =only dup wcheck not { ((ro)) print } if } if /gcheck where { pop gcheck { ((G)) } { ((L)) } ifelse print } { pop } ifelse (--) print } { dup type /stringtype eq 2 index or { ==only } { =only } ifelse } ifelse } forall pop } ifelse % overridden
} { pop pop pop } ifelse % stack known
}
(\nOperand stack:) OSTACKPRINT /.printostack /ostack 4 index exec (\nExecution stack:) ESTACKPRINT /.printestack /estack 4 index exec (\nBacktrace:) //true /.printbacktrace /backtrace 4 index exec (\nDictionary stack:) //false /.printdstack /dstack 4 index exec () = pop % printing procedure
errorname /VMerror eq { (VM status:) print mark vmstatus counttomark { ( ) print counttomark -1 roll dup =only } repeat cleartomark (\n) =only } if
.languagelevel 2 ge { (Current allocation mode is ) print globalmode { (global\n) } { (local\n) } ifelse print } if
.oserrno dup 0 ne { (Last OS error: ) print errorname /VMerror ne { dup .oserrorstring { =only (\n) print pop } { =only (\n) print } ifelse } { =only } ifelse } { pop } ifelse
position //null ne { (Current file position is ) print position = } if
} .internalbind def/.printerror{ //.acquire_$error exec begin newerror { /command load errorname //systemdict /SHORTERRORS get { (%%[ 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 exec } ifelse //.clearerror exec flush } { % newerror is //false, test to see if user has set handleerror to a different
% routine, if so execute it, otherwise, just return. This code deals with the
% Genoa issue of setting /handleerror, and then calling it, without an error
% being set. We were erroring in this case, due to /command load failing.
//JOBSERVER { /errordict .systemvar /handleerror get /.GShandleerror .systemvar ne } { //false } ifelse { /errordict .systemvar begin /handleerror load //.internalstopped exec pop end } if } ifelse % newerror
end flush} .internalbind defcurrentdict /.acquire_$error .undefcurrentdict /.printerror_long .undef
% Define $error. This must be in local VM.
.currentglobal //false .setglobalcurrentdict /$error 40 dict .forceput % $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 /errorinfo //null defend% 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.
currentdict /errordict ErrorNames length 3 add dict.forceput % errordict is local, systemdict is global
.setglobal % back to global VM
% gserrordict contains all the default error handling methods, but unlike
% errordict it is noaccess after creation (also it is in global VM).
% When running 'SAFER', we'll ignore the contents of errordict, which
% may have been tampered with by the running job, and always use gserrordict
% gserrordict also contains any non-standard errors, for better compatibility
% with Adobe.
%
% NOTE: the name gserrordict is known to the interpreter.
/gserrordict ErrorNames length 3 add dict def% Register an error in errordict. We make this a procedure because we only
% register the Level 1 errors here: the rest are registered by "feature"
% files. However, ErrorNames contains all of the error names regardless of
% what features are included, so we have to "know" that VMerror is the last
% Level 1 error.
/.registererror2 % <dict> <name> .registererror -
{ .currentglobal //true .setglobal % create procs in global VM
3 1 roll mark 1 index systemdict /.errorhandler get /exec load //.packtomark exec cvx put .setglobal } .internalbind def/.registererror % <name> .registererror -
{ errordict exch //.registererror2 exec } .internalbind defcurrentdict /.registererror2 .undef
ErrorNames { .registererror} forallerrordict begin% 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 exec cvx def } forall/handleerror % this key is 'well known' and some PS may redefine it
{ /.printerror .systemvar exec } .internalbind defend % errordict
gserrordict /unknownerror errordict /unknownerror get puterrordict /unknownerror .undef
/.SAFERERRORLIST ErrorNames def/.setsafererrors{% Put all the requested handlers in gserrordict
gserrordict //.SAFERERRORLIST { dup /unknownerror eq {pop} { dup errordict exch get 2 index 3 1 roll put }ifelse }forall noaccess pop //systemdict /.setsafeerrors .forceundef //systemdict /.SAFERERRORLIST .forceundef} .internalbind odef
SAFERERRORS {.setsafererrors} if
% Define a stable private copy of handleerror that we will always use under
% JOBSERVER mode.
/.GShandleerror errordict /handleerror get def
% Define the [write]==[only] procedures.
/.dict 8 dict dupbegin def /.cvp {1 index exch 1 .writecvp} .internalbind def /.p {1 index exch writestring} .internalbind def /.p1 {2 index exch writestring} .internalbind def /.p2 {3 index exch writestring} .internalbind def /.print { dup type .dict exch .knownget { exec } { .cvp } ifelse } .internalbind 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} .internalbind def /packedarraytype /arraytype load def{//.dict begin .print pop end} .bindend
/write==only exch def/write== {1 index exch write==only (\n) writestring} .internalbind def/==only { (%stdout) (w) file exch write==only } .internalbind def/== {==only (\n) print} .internalbind 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 } .internalbind def /stringtype { 1 index exch 2 .writecvp } .internalbind def
{//.dict begin .print pop end} .internalbindend
/write===only exch def/write=== {1 index exch write===only (\n) writestring} .internalbind def/===only { (%stdout) (w) file exch write===only } .internalbind def/=== { ===only (\n) print } .internalbind def
% Create the initialization queue.
1183615869 internaldict dup/.delayed_init_queue 10 dict put
/.schedule_init % <priority> <proc> .schedule_init -
{ 1183615869 internaldict begin .delayed_init_queue 2 index known { end (.delayed_init_queue priority conflict with ) print 1 index = /.schedule_init cvx /configurationerror signalerror } if .delayed_init_queue 3 1 roll .growput end} .internalbind def
begin/.execute_scheduled_inits % - .execute_scheduled_inits -
{ 2 dict begin /.newdelayed_init_queue mark 1183615869 internaldict /.delayed_init_queue get {} forall .dicttomark def { 0 //null .newdelayed_init_queue { % maxp {} p {}
3 index 2 index lt { 4 2 roll } if pop pop } forall exch .newdelayed_init_queue exch undef dup //null eq { pop exit } if exec } loop currentdict /.newdelayed_init_queue undef end} .internalbind defend
(END PROCS) VMDEBUG
% Define the font directory.
currentdict/FontDirectory //false .setglobal 100 dict //true .setglobal.forceput % 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 } .internalbind def/.defineencoding { //EncodingDirectory 3 1 roll put } .internalbind 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: This procedure no longer does anything, but it must continue to
% exist for the sake of toolbin/encs2c.ps.
/.registerencoding { % <index> <array> .registerencoding -
pop pop} .internalbind odef
% 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
% Special handling for device parameters. Must follow definition of 'type'
% make -dPDFA equivalent to -dPDFA=1 (backwards compatible)
currentdict /PDFA known { PDFA type /booleantype eq { /PDFA 1 def } if } if
% 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 geterrordict /rangecheck { pop stop } put % pop the command
0 { {dup .getdevice exch 1 add} loop} //.internalstopped exec 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 endput % errordict /rangecheck
.clearerror/devicenames devicedict { pop } forall devicedict length packedarray def
% Determine the default device.
/defaultdevice //systemdict /DISPLAYING get { //systemdict /DEVICE .knownget { devicedict 1 index known not { (Unknown device: ) print = flush /defaultdevice cvx 1 .quit } if } { .getdefaultdevice .devicename } ifelse } { /nullpage }ifelse/.defaultdevicename 1 index deffinddevice % make a copy
defdevicedict /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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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} .internalbind def/.setloresscreen { % <dpi> .setloresscreen -
.setloreshalftone 0 array cvx settransfer % Genoa CET won't accept a packed array!
/setstrokeadjust where { pop //true setstrokeadjust } if} .internalbind def% Use a 45-degree spot screen for high-resolution devices.
% The PS3 CET insists that the screen be an array and not a packedarray (!).
currentpacking //false setpacking/.linescreen% The following screen algorithm is used by permission of the author.
{ ((C) 1989 Berthold K.P. Horn) pop 1 add 180 mul cos 1 0.08 add mul exch 2 add 180 mul cos 1 0.08 sub mul add 2 div }bind readonly defsetpacking/.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 { //systemdict /DITHERPPI get } { 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 //.linescreen % 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.) Ignore missing components
% (*Values = 1).
currentdevice mark /RedValues 0 /GreenValues 0 /BlueValues 0 /GrayValues 0 .dicttomark .getdeviceparams counttomark 2 idiv 1 sub { exch pop dup 1 le { pop } { exch dup 1 le { pop } { .min } ifelse } ifelse } 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 { //systemdict /COLORSCREEN get} { 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} .internalbind def/.sethiresscreen { % <dpi> .sethiresscreen
.sethireshalftone % pushes true if a screen halftone used
% Stack: doscree
{ % Set the transfer function to lighten up the grays.
% 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 } 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 dup .setfilladjust2} .internalbind def
% Set the default screen and BG/UCR.
% We define the proc here, rather than inline in .setdefaultbgucr
% for the benefit of gs_cet.ps so jobs that do anything that causes
% .setdefaultbgucr to be called will still get the redefined proc
% in gs_cet.ps
(%.defaultbgrucrproc) cvn { pop 0 } def
/.setdefaultbgucr { systemdict /setblackgeneration known { (%.defaultbgrucrproc) cvn load dup setblackgeneration setundercolorremoval } if} .internalbind 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} .internalbind def
/.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 } .internalbind 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 exec } //.internalstopped exec { 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 } //.internalstopped exec { pop pop //false } { //true } ifelse } if} .internalbind defcurrentdict /.gsgetdeviceprop .forceundef
/.setdefaulthalftone { //.getdefaulthalftone exec { sethalftone } { % default not found
//.useloresscreen exec { .setloreshalftone } { .sethireshalftone pop } ifelse } ifelse} .internalbind def
/.setdefaultscreen { //.useloresscreen exec { .setloresscreen } { .sethiresscreen } ifelse //.setdefaultbgucr exec} .internalbind defcurrentdict /.setdefaultbgucr .undefcurrentdict /.useloresscreen .undef
% Rendering intent mapping for setcolorrendering1 and PDF interpreter
/.renderingintentdict mark /Perceptual 0 /RelativeColorimetric 1 /Saturation 2 /AbsoluteColorimetric 3.dicttomark readonly def
% Load basic color support
%% Replace 1 (gs_cspace.ps)
(gs_cspace.ps) runlibfile
(END BASIC COLOR) VMDEBUG
% Load image support
%% Replace 1 (gs_img.ps)
(gs_img.ps) runlibfile
(END IMAGE) VMDEBUG
% Auxiliary procedures for generating file name templates.
% 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} .internalbind def
% false <dir_list> <template> .generate_dir_list_templates_with_length <t1> ... <tN>
% true <dir_list> <template> .generate_dir_list_templates_with_length <t1> <l1> ... <tN> <ln>
%
% Generates various valid templates combining a directory list with a given template.
% With 'true' operand it also returns lengths of directory pathes.
%
% Example1 (DOS, Windows) :
% false [(/gs/lib) (/gs/Resource/) (\gs8.00\Resource)] (*/*) -->
% (/gs/lib/*/*) (/gs/Resource/*/*) (\\gs8.00\\Resource/*/*)
%
% Example2 (OpenVMS) :
% false [(gs:[lib]) (gs:[Resource]) (gs800:[Resource)] (*]*) -->
% ((gs:[lib.*]*) [gs:[Resource.*]*) ([gs800:[Resource.*]*)
%
/.generate_dir_list_templates_with_length{ % [dl] (templ)
% We need to convert paths into templates,
% because it can include '\' on DOS.
% In same time, the <template> must not convert,
% because it is already a template.
% Besides that, we cannot combine template using .file_name_combine,
% because template syntax breaks the platform path syntax.
% To resolve this, we first convert the <template> into
% a fake filename, and combine it with path,
% obtaining a correct separator. Then we replace
% the fake file name with the given template.
%
% Create the fake file name :
dup dup length string copy % b [dl] (templ) (ffn)
(*) 0 get (?) 0 get (\\) 0 get (x) 0 get 0 0 % b [dl] (templ) (ffn) * ? \ x i j
{ 1 index 7 index length ge { exit } if 6 index 2 index get % b [dl] (templ) (ffn) * ? \ x i j c
dup 7 index eq % b [dl] (templ) (ffn) * ? \ x i j c bool
1 index 7 index eq or { % *?
pop 2 index } if % b [dl] (templ) (ffn) * ? \ x i j C
dup 5 index eq { % \
3 2 roll 1 add 3 1 roll % b [dl] (templ) (ffn) * ? \ x i' j C
2 index 8 index length ge { pop exit } if pop 6 index 2 index get % b [dl] (templ) (ffn) * ? \ x i' j C'
} if 7 index 2 index 3 2 roll put % b [dl] (templ) (ffn) * ? \ x i' j
1 add exch 1 add exch % b [dl] (templ) (ffn) * ? \ x i'' j'
} loop % b [dl] (templ) (ffn) * ? \ x i j
6 1 roll pop % b [dl] (templ) (ffn) j * ? \ x
exch pop exch pop exch pop exch % b [dl] (templ) (ffn) x j
{ dup 3 index length ge { exit } if 3 copy exch put 1 add } loop pop pop % b [dl] (templ) (ffn)
% An internal procedure :
{ % {} b [dl] (templ) (ffn) (dffn)
dup length 2 index length sub % drop "ffn", remaining "ldffn" = length of the "directory" part
exch % {} b [dl] (templ) (ffn) ldffn (dffn)
//.makepathtemplate exec % {} b [dl] (templ) (ffn) ldffn (Dffn)
dup % {} b [dl] (templ) (ffn) ldffn (Dffn) (Dffn)
4 index length dup % {} b [dl] (templ) (ffn) ldffn (Dffn) (Dffn) templL templL
2 index length % {} b [dl] (templ) (ffn) ldffn (Dffn) (Dffn) templL templL DffnL
exch sub % {} b [dl] (templ) (ffn) ldffn (Dffn) (Dffn) templL i
exch getinterval % {} b [dl] (templ) (ffn) ldffn (Dffn) (suffix)
4 index exch copy pop % {} b [dl] (templ) (ffn) ldffn (dt)
5 index { exch % {} b [dl] (templ) (ffn) (dt) ldffn
7 2 roll % (dt) ldffn {} b [dl] (templ) (ffn)
} { exch pop % {} b [dl] (templ) (ffn) (dt)
6 1 roll % (dt) {} b [dl] (templ) (ffn)
} ifelse } 5 1 roll % {} b [dl] (templ) (ffn)
% Generate templates :
dup .file_name_is_absolute { dup % {} b [dl] (templ) (ffn) (ffn)
5 index exec % (t1) {} b [dl] (templ) (ffn)
} { 2 index { % ... {} b [dl] (templ) (ffn) (d)
1 index % ... {} b [dl] (templ) (ffn) (d) (ffn)
//false .file_name_combine { % ... {} b [dl] (templ) (ffn) (dffn)
5 index exec % ... (t1) ?l1 {} b [dl] (templ) (ffn)
} { % ... {} b [dl] (templ) (ffn) (d) (ffn)
pop pop % ... {} b [dl] (templ) (ffn)
} ifelse } forall } ifelse % (t1) ?l1 (t2) ?l2 ... (tN) ?ln {} b [dl] (templ) (ffn)
pop pop pop pop pop % (t1) ?l1 (t2) ?l2 ... (tN) ?ln
} .forcebind odefcurrentdict /.makepathtemplate .undef
% <dir_list> <template> .generate_dir_list_templates <t1> ... <tN>
%
% Generates various valid templates combining a directory list with a given template.
% It's the 'false' case of the function above.
%
/.generate_dir_list_templates{ //false 3 1 roll //.generate_dir_list_templates_with_length} .forcebind odef
% Load the initialization files for optional features.
%% Replace 4 INITFILES
systemdict /INITFILES known { INITFILES { <00> search { exch pop dup runlibfile VMDEBUG }{ dup runlibfile VMDEBUG exit } ifelse } .forcebind loop }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 } .internalbind 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.
.loadinitialfontscurrentdict /.loadinitialfonts .undef
% 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 defcurrentdict /.runlibfile .undef
% Bind all the operators defined as procedures.
/.bindoperators % binds operators in currentdict
{ currentdict { dup type /operatortype eq { % This might be a real operator, so bind might cause a typecheck
{.forcebind} //.internalstopped exec pop } if pop pop } forall } defDELAYBIND not { .bindoperators %% if not DELAYBIND, undef this now. Otherwise defer to .bindnow
//systemdict /.bindoperators .undef} 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
% If the paper size is not specifed and the device defaults to
% letter or A4 paper, select the DEFAULTPAPERSIZE.
systemdict /DEFAULTPAPERSIZE known not { % Use .defaultpapersize if it returns a known paper size
.defaultpapersize { statusdict /.pagetypeprocs get 1 index known { systemdict exch /DEFAULTPAPERSIZE exch put } { QUIET { pop } { (Unknown .defaultpapersize: ) print ==only (.) = } ifelse } ifelse } if} ifsystemdict /DEFAULTPAPERSIZE knownsystemdict /PAPERSIZE known not andsystemdict /DEVICEWIDTH known not andsystemdict /DEVICEHEIGHT known not andsystemdict /DEVICEWIDTHPOINTS known not andsystemdict /DEVICEHEIGHTPOINTS known not and { defaultdevice mark /PageSize //null .dicttomark .getdeviceparams .dicttomark /PageSize get dup 0 get 0.5 add cvi 612 eq 1 index 1 get 0.5 add cvi 792 eq and 1 index 0 get 0.5 add cvi 595 eq 2 index 1 get 0.5 add cvi 842 eq and or exch pop { % the default paper size was letter, so replace it with DEFAULTPAPERSIZE
/PAPERSIZE DEFAULTPAPERSIZE def } if }if
systemdict /DEVICEWIDTH knownsystemdict /DEVICEHEIGHT known orsystemdict /DEVICEWIDTHPOINTS known orsystemdict /DEVICEHEIGHTPOINTS known orsystemdict /DEVICEXRESOLUTION known orsystemdict /DEVICEYRESOLUTION known orsystemdict /PAPERSIZE known ornot { (%END DEVICE) .skipeof } if% Let DEVICE{WIDTH,HEIGHT}[POINTS] override PAPERSIZE.
systemdict /PAPERSIZE knownsystemdict /DEVICEWIDTH known not andsystemdict /DEVICEHEIGHT known not andsystemdict /DEVICEWIDTHPOINTS known not andsystemdict /DEVICEHEIGHTPOINTS known not and { % Convert the paper size to device dimensions.
statusdict /.pagetypeprocs get PAPERSIZE .knownget { dup 0 get /DEVICEWIDTHPOINTS exch def 1 get /DEVICEHEIGHTPOINTS exch def } { (Unknown paper size: ) print PAPERSIZE ==only (.) = } ifelse} 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 } { 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 knownsystemdict /MaxBitmap known not and { systemdict /MaxBitmap BufferSpace put } ifdup getdevicepropscounttomark 2 idiv { systemdict 2 index known { pop dup load counttomark 2 roll } { pop pop } ifelse } repeatcounttomark 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
INITDEBUG { exec //false } { //.internalstopped exec } ifelse { (%stderr) (w) file dup (**** Unable to open the initial device, quitting.\n) writestring flushfile 1 .quit} if
% If the media size is fixed, update the current page device dictionary.
FIXEDMEDIAdup { pop systemdict /.currentpagedevice known } ifdup { pop .currentpagedevice exch pop } ifnot { (%END MEDIA) .skipeof } ifcurrentpagedevice dup length dict .copydictdup /Policies % Stack: <pagedevice> <pagedevice> /Policies
1 index /InputAttributes2 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 getput % 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
% Set up the interpreter context version of -dUSeCIEColor option
% so that .getuseciecolor has the correct value (see gs_setpd.ps)
/setpagedevice where { pop systemdict /UseCIEColor known { mark /UseCIEColor UseCIEColor /..StartupGlobal //true .dicttomark setpagedevice } if} if
%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 exchsetcacheparams% Conditionally disable the character cache.
NOCACHE { 0 setcachelimit } if
(END CONFIG) VMDEBUG
% Initialize graphics.
.setdefaultscreeninitgraphics
% 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 JOBSERVER { { { clear cleardictstack //false 0 .startnewjob } 2 .stop } .internalbind } { { } } ifelse def<1b> cvn.actonuel % UEL is <esc>%-12345X and acts the same as ^D
{systemdict (.forceinterp_exit) cvn known {//true} {//false} ifelse}{//false} ifelse
{ { currentfile (%-12345X) .peekstring pop (%-12345X) eq { currentfile .forceinterp_exit } if }}{ {currentfile (%-12345X) .peekstring pop (%-12345X) eq <04> cvn load if}} ifelse .internalbind def
<1b45> cvn { } def % PJL reset prologue (ESC E)
<1b451b> cvn <1b> cvn load def % PJL reset epilogue (ESC E + UEL)
(\001M) cvn % TBCP initiator
{ currentfile /TBCPDecode filter cvx exec } .internalbind def/@PJL % H-P job control
{ % Windows 2000 driver includes PJL into %%BeginFeature block.
% Identify this from the pattern on the stack: countdictstack lucas mark
% and fail the feature request.
count 3 ge { dup mark eq { 2 index countdictstack eq { 1 index /lucas where { /lucas get eq } { pop //false } ifelse { stop } if } if } if } if currentfile //=string readline pop pop } .internalbind def
% Install the EPS handler if needed
systemdict /EPSBoundingBoxInit known { EPSBoundingBoxInit } ifsystemdict /EPSBoundingBoxInit .forceundef
%% ---------------- SAFER stuff BEGIN -------------------%%
% If we want a "safer" system, disable some obvious ways to cause havoc.
.currentglobal //true .setglobal/SAFETY 2 dict dup /safe //false put dup /tempfiles 10 dict noaccess putreadonly def.setglobal
/SAFERUndefinePostScriptOperators { [ % Used by our own test suite files
/.setdotlength % Bug687720.ps
/.sort /.setdebug /.mementolistnewblocks /getenv /unread /makeimagedevice ] {systemdict exch .forceundef} forall
//systemdict /SAFERUndefinePostScriptOperators .forceundef} .forcebind def % must be bound and hidden for .forceundef
/tempfilepaths[ (TMPDIR) getenv not { (TEMP) getenv not { (TMP) getenv not { (/temp) (/tmp) } if } if } if] def
/.lockfileaccess { .currentpathcontrolstate { //QUIET not { (\n **** WARNING: .lockfileaccess or .setsafe called ****\n) print ( **** when file access controls are already active ****\n) print flush } if } { [ //tempfilepaths (*) .generate_dir_list_templates /FONTPATH .systemvar (*) .generate_dir_list_templates /level2dict where { pop % Default resources :
[ currentsystemparams /GenericResourceDir get] (*) .generate_dir_list_templates } if /LIBPATH .systemvar (*) .generate_dir_list_templates currentuserparams /ICCProfilesDir known { [currentuserparams /ICCProfilesDir get] (*) .generate_dir_list_templates } if ] {/PermitFileReading exch .addcontrolpath} forall
[ //tempfilepaths (*) .generate_dir_list_templates ] {/PermitFileWriting exch .addcontrolpath} forall
[ //tempfilepaths (*) .generate_dir_list_templates ] {/PermitFileControl exch .addcontrolpath} forall
.activatepathcontrol } ifelse} .internalbind def
/.locksafe_userparams { SAFETY /safe get not { << /PermitFileReading [ currentuserparams /PermitFileReading get aload pop //tempfilepaths (*) .generate_dir_list_templates /FONTPATH .systemvar (*) .generate_dir_list_templates % Library files :
/LIBPATH .systemvar (*) .generate_dir_list_templates % Resource files on OpenVMS requires a separate template (gs:[dir.*]*)
% because the (gs:[dir]*) doesn't cover them.
/LIBPATH .systemvar (*) .file_name_separator (*) concatstrings concatstrings .generate_dir_list_templates .languagelevel 2 ge { % Default resources :
[ currentsystemparams /GenericResourceDir get] (*) .generate_dir_list_templates % Default resources (OpenVMS, see comment above.) :
[ currentsystemparams /GenericResourceDir get] (*) .file_name_separator (*) concatstrings concatstrings .generate_dir_list_templates } if currentuserparams /ICCProfilesDir known { [currentuserparams /ICCProfilesDir get] (*) .generate_dir_list_templates } if ] /PermitFileWriting [ currentuserparams /PermitFileWriting get aload pop //tempfilepaths (*) .generate_dir_list_templates ] /PermitFileControl [ currentuserparams /PermitFileControl get aload pop //tempfilepaths (*) .generate_dir_list_templates ] /LockFilePermissions //true >> setuserparams } if} .forcebind def
currentdict /tempfilepaths undef
%% --- These are documented extensions ---
/.locksafe { //.locksafe_userparams exec //systemdict /getenv {pop //false} .forceput % setpagedevice has the side effect of clearing the page, but
% we will just document that. Using setpagedevice keeps the device
% properties and pagedevice .LockSafetyParams in agreement even
% after a restore that changes the value to false.
currentglobal currentpagedevice gcheck setglobal % use correct VM space
<< /.LockSafetyParams //true >> setpagedevice setglobal //SAFETY /safe //true .forceput % overrides readonly
} .forcebind odef
/.setsafe{ OLDSAFER { SAFETY /safe get not { << /PermitFileReading [ ] /PermitFileWriting [ ] /PermitFileControl [ ] >> setuserparams } if .locksafe } { //.lockfileaccess exec DELAYBIND not { //systemdict /SAFERUndefinePostScriptOperators .knownget {exec} if } if } ifelse} .forcebind odef%% --- End documented extensions ---
% This is only used during startup. Its required so that
% we can detect in setpagdevice that we are in fact in startup
% and allocate a *global* instead of local VM. We need it to be
% global to satisfy Display PostScript (see start of /setpagdevice
% in gs_setpd.ps)
%
/.locksafeglobal { //.locksafe_userparams exec systemdict /getenv {pop //false} put % setpagedevice has the side effect of clearing the page, but
% we will just document that. Using setpagedevice keeps the device
% properties and pagedevice .LockSafetyParams in agreement even
% after a restore that changes the value to false.
currentglobal currentpagedevice gcheck setglobal % use correct VM space
<< /.LockSafetyParams //true /..StartupGlobal //true >> setpagedevice setglobal //SAFETY /safe //true .forceput % overrides readonly
} .forcebind def
% See /.locksafeglobal above.
%
/.setsafeglobal { OLDSAFER { SAFETY /safe get not { << /PermitFileReading [ ] /PermitFileWriting [ ] /PermitFileControl [ ] >> setuserparams } if //.locksafeglobal exec } { //.lockfileaccess exec DELAYBIND not { //systemdict /SAFERUndefinePostScriptOperators .knownget {exec} if } if } ifelse} .forcebind odef
% If we are running in SAFER mode, lock things down
SAFER { .setsafeglobal } ifcurrentdict /.locksafe_userparams .undefcurrentdict /.setsafeglobal .undefcurrentdict /.locksafeglobal .undef
%% ---------------- SAFER stuff END -------------------%%
/UndefinePostScriptFilters { [ /BCPEncode /TBCPEncode /PNGPredictorEncode /PNGPredictorDecode /PixelDifferenceDecode /PixelDifferenceEncode /zlibEncode /zlibDecode /PWGDecode /eexecEncode /ArcfourEncode /PSStringEncode /BCPDecode /OLDPDF where {/OLDPDF get not {/SHA256Encode /MD5Encode /AESDecode /JPXDecode /JBIG2Decode /ArcfourDecode /.EOFDecode} if} if ] {filterdict exch undef} forall} .forcebind def
/UndefinePostScriptOperators { % This list is of operators which no longer appear to be used, and which we do not believe
% to have any real use. For now we will undefine the operstors so they cannot easily be used
% but can be easily restored (just delete the name from the list in the array). In future
% we may remove the operator and the code implementation entirely.
[ /.bitadd /.charboxpath /.cond /.runandhide /.popdevicefilter /.execfile /.filenamesplit /.file_name_parent /.setdefaultmatrix /.updatematrices /.isprocfilter /.unread /.psstringencode /.buildsampledfunction /.isencapfunction /.currentaccuratecurves /.currentcurvejoin /.currentdashadapt /.currentdotlength /.currentlimitclamp /.dotorientation /.setaccuratecurves /.setcurvejoin /.setdashadapt /.setdotorientation /.setlimitclamp /.currentscreenlevels /.dashpath /.pathbbox /.identeq /.identne /.tokenexec /.forgetsave /.pantonecallback
% Used by our own test suite files
%/.setdotlength % Bug687720.ps
] {systemdict exch .forceundef} forall
% This list of operators are used internally by various parts of the Ghostscript startup code.
% Since each operator is a potential security vulnerability, and any operator listed here
% is not required once the initialisation is complete and functions are bound, we undefine
% the ones that aren't needed at runtime.
[ /.callinstall /.callbeginpage /.callendpage /.currentstackprotect /.setstackprotect /.errorexec /.finderrorobject /.installsystemnames /.bosobject /.fontbbox /.type1execchar /.type2execchar /.type42execchar /.setweightvector /.getuseciecolor /processcolors /.includecolorspace /.execn /.instopped /.stop /.stopped /.setcolorrendering /.setdevicecolorrendering /.buildcolorrendering1 /.builddevicecolorrendering1 /.TransformPQR_scale_WB0 /.TransformPQR_scale_WB1 /.TransformPQR_scale_WB2 /.currentoverprintmode /.copydevice2 /.devicename /.doneshowpage /.getbitsrect /.getdevice /.getdefaultdevice /.getdeviceparams /.gethardwareparams /makewordimagedevice /.outputpage /.putdeviceparams /.setdevice /.currentshowpagecount /.setpagedevice /.currentpagedevice /.knownundef /.setmaxlength /.rectappend /.initialize_dsc_parser /.parse_dsc_comments /.fillCIDMap /.fillIdentityCIDMap /.buildcmap /.filenamelistseparator /.libfile /.getfilename /.file_name_combine /.file_name_is_absolute /.file_name_separator /.file_name_directory_separator /.file_name_current /.filename /.peekstring /.writecvp /.subfiledecode /.setupUnicodeDecoder /.jbig2makeglobalctx /.registerfont /.parsecff /.getshowoperator /.getnativefonts /.beginform /.endform /.get_form_id /.repeatform /.reusablestream /.rsdparams /.buildfunction /.sethpglpathmode /.currenthpglpathmode /.currenthalftone /.sethalftone5 /.image1 /.imagemask1 /.image3 /.image4 /.getiodevice /.getdevparms /.putdevparams /.matchmedia /.matchpagesize /.defaultpapersize /.oserrno /.setoserrno /.oserrorstring /.getCPSImode /.getscanconverter /.setscanconverter /.type1encrypt /.type1decrypt/.languagelevel /.setlanguagelevel /.eqproc /.fillpage /.shfill /.argindex /.bytestring /.namestring /.stringbreak /.stringmatch /.globalvmarray /.globalvmdict /.globalvmpackedarray /.globalvmstring /.localvmarray /.localvmdict /.localvmpackedarray /.localvmstring /.systemvmarray /.systemvmdict /.systemvmpackedarray /.systemvmstring /.systemvmfile /.systemvmlibfile /.systemvmSFD /.settrapparams /.currentsystemparams /.currentuserparams /.getsystemparam /.getuserparam /.setsystemparams /.setuserparams /.checkpassword /.locale_to_utf8 /.currentglobal /.gcheck /.imagepath /.currentoutputdevice /.type /.writecvs /.setSMask /.currentSMask /.needinput /.countexecstack /.execstack /filterdict /.cidfonttypes /.colorrenderingtypes /.formtypes /.halftonetypes /.imagetypes /.imagemasktypes /.patterntypes /.shadingtypes /.wheredict /.renderingintentdict /.currentmatrix /.setmatrix /.setlinecap /.setlinejoin /.sizeimagebox /.systemvmcheck /.forceinterp_exit /.actonuel /.init_otto_font_file /.composefontdict /.type1build /.buildnativefontmap /.completefont /.definefakefonts /.fontnameproperties /.growfontdict /.substitutefont /.substitutefontname /.FontDirectory /.charkeys /.makesfnts /.pickcmap /.loadttcidfont /.loadpdfttfont /obind /odef /.packtomark /.putdeviceprops /putdeviceprops /getdeviceprops /finddevice /.growdict /.growdictlength /.userdict /.uservar /.getdefaulthalftone /.registererror /.PurgeDict /.runresource /.numicc_components /.set_outputintent /.internalstopped /.generate_dir_list_templates /.generate_dir_list_templates_with_length /.type11mapcid /.type9mapcid /.clearerror /.beginpage /.endpage /.getpath /.confirm /.confirmread
% Used by a free user in the Library of Congress. Apparently this is used to
% draw a partial page, which is then filled in by the results of a barcode
% scanner and SQL database lookup. Its not clear to us exactly why this needs to be
% done as a partial page, but its easiest to restore the operator, and it seems like
% its a reasonably safe operator to restore, for the *very* few devices on which
% it will have any effect. Currently this uses the 'sync_output' device method
% to transfer the partial page, in future we may use a spec_op instead.
%/flushpage
% Used by our own test suite files
%/.fileposition %image-qa.ps
% Either our code uses these in ways which mean they can't be undefined, or they are used directly by
% test files/utilities, or engineers expressed a desire to keep them visible.
%
%/currentdevice /.sort /.buildfont0 /.buildfont1 /.buildfont2 /.buildfont3 /.buildfont4 /.buildfont9 /.buildfont10 /.buildfont11
%/.buildfont32 /.buildfont42 /.swapcolors
%/currentdevice /.quit /.setuseciecolor /.needinput /.setoverprintmode /.special_op /.dicttomark /.knownget
%/.FAPIBuildGlyph /.FAPIBuildChar /.FAPIBuildGlyph9
%/.tempfile /.max /.min /.setglobal
%/.setdebug /.mementolistnewblocks /getenv
] {systemdict exch .forceundef} forall
% level 2 operators, undefine from both systemdict and level2dict
[ /.execform1 /.getdevparams /.setuserparams2 /.startjob /.checkFilePermitparams /.copyparam /.setdevicecolorrendering1 /.buildpattern1 /.findcategory /.execinstall /.findfontop
% Couldn't figure out how to do these yet
% /.checkparamtype
% /.startnewjob
] dup {level2dict exch .forceundef} forall {systemdict exch .forceundef} forall
% undef stuff from statusdict
[% /.setpagesize
] {statusdict exch .forceundef} forall
//systemdict /UndefinePostScriptFilters .forceundef //systemdict /UndefinePostScriptOperators .forceundef} .forcebind def % must be bound and hidden for .forceundef
% If we delayed binding, make it possible to do it later.
/.bindnow { currentuserparams /IdiomRecognition .knownget { 1 dict dup /IdiomRecognition //false put setuserparams } if //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 .forcebind pop } for 0 1 .delayinternalcount 1 sub { .delayinternalbind exch get .forcebind pop } for //systemdict /.delaybind {} .forceput % reclaim the space
//systemdict /.delayinternalbind {} .forceput % reclaim the space
//systemdict /.bindnow .forceundef % ditto
.applyundefinternalnames put SAFER { //systemdict /SAFERUndefinePostScriptOperators get exec } if //systemdict /UndefinePostScriptFilters get exec //systemdict /UndefinePostScriptOperators get exec //systemdict /.forcecopynew .forceundef % remove temptation
//systemdict /.forceput .forceundef % ditto
//systemdict /.undef .forceundef % ditto
//systemdict /.bindoperators .forceundef //systemdict /.forceundef .forceundef % ditto
//systemdict /.undefinternalnames .forceundef //systemdict /.applyundefinternalnames .forceundef //systemdict /.undefinternalnameslist .forceundef //systemdict /.internalbind .forceundef //systemdict /.forcebind .forceundef currentuserparams /IdiomRecognition known { 1 dict dup /IdiomRecognition 4 -1 roll put setuserparams } if} .forcebind def
% 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
} executeonly 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 currentdict exch /userparams exch .forceput % systemdict is read-only
.setglobal} executeonly if/.currentsystemparams where { pop % Remove real system params from pssystemparams.
mark .currentsystemparams counttomark 2 idiv { pop pssystemparams exch .forceundef } executeonly repeat pop} if
% Set up AlignToPixels :
/AlignToPixels where { mark /AlignToPixels 2 index /AlignToPixels get .dicttomark setuserparams /AlignToPixels undef} if
% Set up GridFitTT :
/GridFitTT where { mark /GridFitTT 2 index /GridFitTT get .dicttomark setuserparams /GridFitTT undef} if
% Establish local VM as the default.
//false /setglobal where { pop setglobal } { .setglobal } ifelse$error /.nosetlocal //false put
(END GLOBAL) VMDEBUG
% Add the fake fonts to LocalFontDirectory.
//.definefakefonts exec % current VM is local
% Execute scheduled inits :
1183615869 internaldict /.execute_scheduled_inits get execcurrentdict /.schedule_init undef%currentdict /.execute_scheduled_inits undef
%currentdict /.delayed_init_queue undef
% Make global and local FontDirectory read-only.
FontDirectory readonly pop/GlobalFontDirectory where { pop GlobalFontDirectory readonly pop } if
% If we are using DELAYBIND we have to defer the undefinition
% until .bindnow.
DELAYBIND not { //systemdict /UndefinePostScriptFilters get exec //systemdict /UndefinePostScriptOperators get exec} ifend
% Clean up VM, and enable GC. Use .vmreclaim to force the GC.
/vmreclaim where { pop //systemdict /NOGC get not { 2 .vmreclaim 0 vmreclaim } if } ifsystemdict /.vmreclaim .undeflevel2dict /.vmreclaim .undef
% Do this before systemdict is locked (see below for additional CETMODE setup using gs_cet.ps)
systemdict /CETMODE .knownget { { (gs_cet.ps) runlibfile } if} ifsystemdict /.makeoperator .undef % must be after gs_cet.ps
systemdict /.setCPSImode .undef % must be after gs_cet.ps
DELAYBIND not { systemdict /.bindnow .undef % We only need this for DELAYBIND
systemdict /.internalbind .undef systemdict /.forcebind .undef systemdict /.forcecopynew .undef % remove temptation
systemdict /.forceput .undef % ditto
systemdict /.forceundef .undef % ditto
systemdict /.undefinternalnames .undef systemdict /.applyundefinternalnames .undef systemdict /.undefinternalnameslist .undef} if
% Can't remove this one until the last minute :-)
DELAYBIND not {systemdict /.undef .undef} if
WRITESYSTEMDICT { SAFER { (\n *** WARNING - you have selected SAFER, indicating you want Ghostscript\n) print ( to execute in a safer environment, but at the same time\n) print ( have selected WRITESYSTEMDICT. Unless you use this option with\n) print ( care and specifically, remember to execute code like:\n) print ( "systemdict readonly pop"\n) print ( it is possible that malicious code may be able to evade the\n) print ( limited security offered by the SAFER option.\n) print flush }if}{ systemdict readonly pop} ifelse
(END GC) VMDEBUG
% The Adobe AGM_Core used by Illustrator 9 has some code that breaks
% if the 'product' is not (Adobe PostScript Parser). A bug has been
% submitted to Adobe since this also fails with Acrobat Distiller.
% As a temporary work around, the following HACK will work for
% devices without spot color support. Once Ghostscript can
% support DeviceN and spot color separations this will need to
% be 'true' in some cases.
userdict /AGM_preserve_spots //false put
% The interpreter will run the initial procedure (start).
|