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% Copyright (C) 2001-2018 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., 1305 Grant Avenue - Suite 200, Novato, % CA 94945, U.S.A., +1(415)492-9861, 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! 925 % 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 } 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. % 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 def currentdict /PDFSTOPONWARNING known {/PDFSTOPONWARNING true def /PDFSTOPONERROR true def}{/PDFSTOPONWARNING false def} ifelse currentdict /PDFNOCIDFALLBACK known /PDFNOCIDFALLBACK exch def /.bind /bind load 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 .bind 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 def currentdict /DELAYBIND known /DELAYBIND exch def currentdict /DOINTERPOLATE .knownget { { -1 } { 0 } ifelse /InterpolateControl 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 /JOBSERVER known /JOBSERVER exch def currentdict /NOCACHE known /NOCACHE exch def currentdict /NOCCFONTS known /NOCCFONTS exch def currentdict /NOCIE known /NOCIE exch def currentdict /NOPSICC known /NOPSICC exch def currentdict /NODISPLAY known not /DISPLAYING exch def currentdict /NOFONTMAP known /NOFONTMAP exch def currentdict /NOFONTPATH known /NOFONTPATH exch def currentdict /NOGC known /NOGC exch def currentdict /NOINTERPOLATE .knownget { /InterpolateControl 0 def } if currentdict /NOMEDIAATTRS known /NOMEDIAATTRS exch def currentdict /NOOUTERSAVE known /NOOUTERSAVE exch def currentdict /NOPAGEPROMPT known /NOPAGEPROMPT exch def currentdict /NOPAUSE known /NOPAUSE exch def currentdict /NOPLATFONTS known /NOPLATFONTS exch def currentdict /NOPROMPT known /NOPROMPT exch def currentdict /NOTRANSPARENCY known /NOTRANSPARENCY exch def currentdict /DOPS known /DOPS exch def currentdict /NOSUBSTDEVICECOLORS known /NOSUBSTDEVICECOLORS 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 /SAFER currentdict /NOSAFER known { //false } { currentdict /SAFER known currentdict /PARANOIDSAFER known or % PARANOIDSAFER is equivalent } ifelse def /SAFERERRORS currentdict /NOSAFERERRORS known { //false } { currentdict /SAFERERRORS known } ifelse def currentdict /SHORTERRORS known /SHORTERRORS exch def currentdict /TTYPAUSE known /TTYPAUSE exch def currentdict /WRITESYSTEMDICT known /WRITESYSTEMDICT exch def currentdict /RENDERTTNOTDEF known /RENDERTTNOTDEF exch def currentdict /SCANCONVERTERTYPE known { currentdict /SCANCONVERTERTYPE get .setscanconverter } if % We rely on PSFitPage to actually implement EPSFitPage % But we need EPSCrop to be true, to actually issue a PageSize request, so set it here % in case the user forgets. currentdict /EPSFitPage known { /PSFitPage //true def /EPSCrop //true def} if % This is a "convenience" option that sets a combination of EPSFitPage, PDFFitPage and PSFitPage currentdict /FitPage known { /EPSFitPage //true def /EPSCrop //true def /PDFFitPage //true def /PSFitPage //true 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 } .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 (GPL Ghostscript) search { pop pop pop (This software comes with NO WARRANTY: see the file PUBLIC 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 10 idiv (.) 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 - 1 .argindex pop % check # of args 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 /.systemexec { .systemvar exec } .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 { 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 } if .currentglobal //false .setglobal systemdict /.delaybind 2000 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 cvx exec } 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 .systemvar 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 **************** % 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 } bind 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 % .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 .doneshowpage { .currentnumcopies 1 index .outputpage (>>copypage, press <return> to continue<<\n) .confirm dup { erasepage } if } if pop systemdict /..page_default_spaces .knownget { //.PurgeDict exec } if .beginpage } 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 % .currentnumcopies is redefined in Level 2. /.currentnumcopies { #copies } 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 def userdict /.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 % .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 currentoverprint //false setoverprint 1 setgray .fillpage setoverprint exec } odef % To satisfy the Genoa FTS, executive must be a procedure, not an operator. /executive { { prompt { (%statementedit) (r) .systemvmfile } stopped { pop pop $error /errorname get /undefinedfilename eq { .clearerror exit } if % EOF /handleerror .systemvar exec //null % ioerror?? } if cvx { .runexec } .execute pop } loop } bind def /filter { //filterdict 1 .argindex .knownget { exch pop exec } { /filter .systemvar /undefined signalerror } ifelse } odef % 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 JOBSERVER { { /.GShandleerror .systemvar .internalstopped pop } bind % always use .GShandleerror. } { { /errordict .systemvar /handleerror get .internalstopped pop } bind % 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 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) .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 } 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 { 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 /showpage { 0 .endpage .doneshowpage { .currentnumcopies //true .outputpage (>>showpage, press <return> to continue<<\n) .confirm % 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 } 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 .argindex 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 .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. % 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 % 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 { .systemvmlibfile { 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 % .localvmarray may be an operator: see zsysvm.c. /.localvmarray where { pop } { /.localvmarray { .currentglobal //false .setglobal exch array exch .setglobal } bind def } ifelse /.localvmdict where { pop } { /.localvmdict { .currentglobal //false .setglobal exch dict exch .setglobal } bind def } ifelse /.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 /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 } 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 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 .systemvar exec 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 { 0 0 .systemvmstring .systemvmSFD 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. % % 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. /.needinput 1 .systemvmarray dup 0 /.needinput load put def /.runstringbegin { 1 .systemvmarray dup 0 //.needinput 0 get put cvx % { .needinput } in systemvm 0 0 .systemvmstring .systemvmSFD cvx .runexec } bind executeonly 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 } 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 executeonly def /.errorhandler % <command> <errorname> .errorhandler - { % Detect an internal 'stopped'. 1 .instopped { //null eq { pop pop stop } if } if (I) //false .setdebug $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 /errorinfo known not { $error /errorinfo //null put } if $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 % 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 $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 executeonly 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 newerror { /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 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 pop end } if } ifelse % newerror end flush } bind executeonly 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 .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 { () = } 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 executeonly 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 executeonly 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 /errorinfo //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 3 add dict .forcedef % 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. /.registererror % <name> .registererror - { errordict exch .registererror2 } bind def /.registererror2 % <dict> <name> .registererror - { .currentglobal //true .setglobal % create procs in global VM 3 1 roll mark 1 index systemdict /.errorhandler get /exec load .packtomark cvx put .setglobal } bind def ErrorNames { dup .registererror /VMerror eq {exit} if } forall errordict 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 cvx def } forall /handleerror % this key is 'well known' and some PS may redefine it { /.printerror .systemvar exec } bind def end % errordict gserrordict /unknownerror errordict /unknownerror get put errordict /unknownerror .undef /.SAFERERRORLIST ErrorNames def /.setsafererrors { % Put all the requested handlers in gserrordict gserrordict //.SAFERERRORLIST {dup errordict exch get 2 index 3 1 roll put} forall noaccess pop //systemdict /.setsafeerrors .forceundef //systemdict /.SAFERERRORLIST .forceundef } bind executeonly 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 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 % Create the initialization queue. /.delayed_init_queue 10 dict def /.schedule_init % <priority> <proc> .schedule_init - { //.delayed_init_queue 2 index known { (.delayed_init_queue priority conflict with ) print 1 index = /.schedule_init cvx /configurationerror signalerror } if //.delayed_init_queue 3 1 roll .growput } bind def /.execute_scheduled_inits % - .execute_scheduled_inits - { { 0 //null //.delayed_init_queue { % maxp {} p {} 3 index 2 index lt { 4 2 roll } if pop pop } forall exch //.delayed_init_queue exch undef dup //null eq { pop exit } if exec } loop } 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: 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 } bind 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 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 } { .getdefaultdevice .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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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 } 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. % 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 def setpacking /.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 //.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 { 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 % 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 .setfilladjust } bind 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 } 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 /.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 % 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 { 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 { pop pop //false } { //true } ifelse } if } bind def currentdict /.gsgetdeviceprop .forceundef /.setdefaulthalftone { .getdefaulthalftone { sethalftone } { % default not found .useloresscreen { .setloreshalftone } { .sethireshalftone pop } ifelse } ifelse } bind def /.setdefaultscreen { .useloresscreen { .setloresscreen } { .sethiresscreen } ifelse .setdefaultbgucr } bind def % 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 } bind 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 % {} 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 } bind def % <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 exec } bind def % 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 } .bind 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 } 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 { currentdict { dup type /operatortype eq { % This might be a real operator, so bind might cause a typecheck {.bind} .internalstopped pop } if pop pop } forall } def DELAYBIND 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 % 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 } if systemdict /DEFAULTPAPERSIZE known systemdict /PAPERSIZE known not and systemdict /DEVICEWIDTH known not and systemdict /DEVICEHEIGHT known not and systemdict /DEVICEWIDTHPOINTS known not and systemdict /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 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. 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 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 INITDEBUG { exec //false } { .internalstopped } 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. 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 % 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 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 JOBSERVER { { { clear cleardictstack //false 0 .startnewjob } 2 .stop } bind } { { } } ifelse def <1b> cvn { % UEL is <esc>%-12345X and acts the same as ^D currentfile (%-12345X) .peekstring pop (%-12345X) eq <04> cvn load if } bind 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 } bind 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 } bind def % Install the EPS handler if needed systemdict /EPSBoundingBoxInit known { EPSBoundingBoxInit } if % 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 put readonly def .setglobal /tempfilepaths [ (TMPDIR) getenv not { (TEMP) getenv not { (TMP) getenv not { (/temp) (/tmp) } if } if } if ] 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 } bind def currentdict /tempfilepaths undef /.locksafe { .locksafe_userparams //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 } .bind executeonly odef % 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 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 } .bind executeonly odef /.setsafe { SAFETY /safe get not { << /PermitFileReading [ ] /PermitFileWriting [ ] /PermitFileControl [ ] >> setuserparams } if .locksafe } .bind executeonly odef % See /.locksafeglobal above. % /.setsafeglobal { SAFETY /safe get not { << /PermitFileReading [ ] /PermitFileWriting [ ] /PermitFileControl [ ] >> setuserparams } if .locksafeglobal } bind executeonly odef % If we are running in SAFER mode, lock things down SAFER { .setsafeglobal } if /SAFERUndefinePostScriptOperators { [ % Used by our own test suite files /.pushpdf14devicefilter % transparency-example.ps /.poppdf14devicefilter % transparency-example.ps /.setopacityalpha % transparency-example.ps /.setshapealpha % transparency-example.ps /.endtransparencygroup % transparency-example.ps /.setdotlength % Bug687720.ps /.sort /.setdebug /.mementolistnewblocks /getenv /unread ] {systemdict exch .forceundef} forall //systemdict /SAFERUndefinePostScriptOperators .forceundef } .bind executeonly def % must be bound and hidden for .forceundef /UndefinePostScriptOperators { % This list is of Display PostScript operators. We believe that Display PostScript % was never fully implemented and the only known user, GNUStep, is no longer % using it. So lets remove it. [ /condition /currentcontext /detach /.fork /join /.localfork /lock /monitor /notify /wait /yield /.currentscreenphase /.setscreenphase /.image2 /eoviewclip /initviewclip /viewclip /viewclippath /defineusername % NeXT DPS extensions /currentalpha /setalpha /.alphaimage /composite /compositerect /dissolve /sizeimagebox /.sizeimageparams ] {systemdict exch .forceundef} forall % 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 /.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 /.currentfilladjust2 /.setfilladjust2 /.sethpglpathmode /.currenthpglpathmode /.currenthalftone /.sethalftone5 /.image1 /.imagemask1 /.image3 /.image4 /.getiodevice /.getdevparms /.putdevparams /.bbox_transform /.matchmedia /.matchpagesize /.defaultpapersize /.oserrno /.setoserrno /.oserrorstring /.getCPSImode /.getscanconverter /.setscanconverter /.type1encrypt /.type1decrypt/.languagelevel /.setlanguagelevel /.eqproc /.fillpage /.buildpattern1 /.saslprep /.buildshading1 /.buildshading2 /.buildshading3 /.buildshading4 /.buildshading5 /.buildshading6 /.buildshading7 /.buildshadingpattern /.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 /.applypolicies /odef % 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 /.type9mapcid /.type11mapcid /.swapcolors %/currentdevice /.quit /.setuseciecolor /.needinput /.setoverprintmode /.special_op /.dicttomark /.knownget %/.FAPIavailable /.FAPIpassfont /.FAPIrebuildfont /.FAPIBuildGlyph /.FAPIBuildChar /.FAPIBuildGlyph9 %/.tempfile /.numicc_components /.set_outputintent /.max /.min /.vmreclaim /.getpath /.setglobal %/.setdebug /.mementolistnewblocks /getenv ] {systemdict exch .forceundef} forall % level 2 operators, undefine from both systemdict and level2dict [ /.execform1 /.getdevparams /.setuserparams2 /.startjob /.checkFilePermitparams /.copyparam /.setpagesize % Couldn't figure out how to do these yet % /.checkparamtype % /.startnewjob ] dup {level2dict exch .forceundef} forall {systemdict exch .forceundef} forall //systemdict /UndefinePostScriptOperators .forceundef } .bind executeonly def % must be bound and hidden for .forceundef /UndefinePDFOperators { % This list of operators are used internally by various parts of the Ghostscript PDF interpreter. % Since each operator is a potential security vulnerability, and any operator listed here % is not required once the initislisation is complete and functions are bound, we undefine % the ones that aren't needed at runtime. % This function is only called if DELAYBIND is true. It is a copy of the code at the end of pdf_main.ps % and must be maintained in parallel with it. [ /.pdfawidthshow /.pdfwidthshow /.currentblackptcomp /.setblackptcomp /.setfillcolor /.setfillcolorspace /.setstrokecolor /.setstrokecolorspace /.currentrenderingintent /.setrenderingintent /.currenttextrenderingmode /.settextspacing /.currenttextspacing /.settextleading /.currenttextleading /.settextrise /.currenttextrise /.setwordspacing /.currentwordspacing /.settexthscaling /.currenttexthscaling /.settextlinematrix /.currenttextlinematrix /.currenttextmatrix /.settextmatrix /.currentblendmode /.currentopacityalpha /.currentshapealpha /.currenttextknockout /.pushextendedgstate /.popextendedgstate /.begintransparencytextgroup /.endtransparencytextgroup /.begintransparencymaskgroup /.begintransparencymaskimage /.endtransparencymask /.image3x /.abortpdf14devicefilter /.pdfinkpath /.pdfFormName /.setstrokeconstantalpha /.setfillconstantalpha /.setalphaisshape /.currentalphaisshape /.settextspacing /.currenttextspacing /.settextleading /.currenttextleading /.settextrise /.currenttextrise /.setwordspacing /.currentwordspacing /.settexthscaling /.currenttexthscaling /.setPDFfontsize /.currentPDFfontsize /.setdistillerparams % undefining these causes errors/incorrect output %/.settextrenderingmode /.setblendmode /.begintransparencygroup /.settextknockout /check_r6_password /.setstrokeoverprint /.setfilloverprint %/.currentstrokeoverprint /.currentfilloverprint /.currentfillconstantalpha /.currentstrokeconstantalpha ] {systemdict exch .forceundef} forall //systemdict /UndefinePDFOperators .forceundef } .bind executeonly 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 .bind pop } for //systemdict /.delaybind {} .forceput % reclaim the space //systemdict /.bindnow .forceundef % ditto put SAFER { //systemdict /SAFERUndefinePostScriptOperators get exec } if //systemdict /UndefinePostScriptOperators get exec //systemdict /UndefinePDFOperators get exec //systemdict /.forcecopynew .forceundef % remove temptation //systemdict /.forcedef .forceundef % ditto //systemdict /.forceput .forceundef % ditto //systemdict /.undef .forceundef % ditto //systemdict /.forceundef .forceundef % ditto currentuserparams /IdiomRecognition known { 1 dict dup /IdiomRecognition 4 -1 roll put setuserparams } if } .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 } 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 /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 } 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 % .savelocalstate is part of Display PostScript (if included). Part of the function of % the .savelocalstate routine is to store the 'initial saved gstate' (savedinitialgstate) % in systemdict. The code in dps1.c, gstate_check_space, disallows writing or creating % gstates in global VM in certain conditions. If we execute setpagedevice before we % reach this point, we must ensure that we do so using /..StartupGlobal so that % the dictionary is defined in global VM, because the gstate contains a pointer to the % device dictionary, and if that is allocated in local VM we will fail the gstate check. /.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 % Execute scheduled inits : //.execute_scheduled_inits exec 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 % 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 currentdict /.renderingintentdict .undef % If we are using DELAYBIND we have to defer the undefinition % until .bindnow. DELAYBIND not { SAFER { //systemdict /SAFERUndefinePostScriptOperators get exec } if //systemdict /UndefinePostScriptOperators get exec //systemdict /UndefinePDFOperators .forceundef } if end % Clean up VM, and enable GC. Use .vmreclaim to force the GC. /vmreclaim where { pop NOGC not { 2 .vmreclaim 0 vmreclaim } if } if % Do this before systemdict is locked (see below for additional CETMODE setup using gs_cet.ps) systemdict /CETMODE .knownget { { (gs_cet.ps) runlibfile } if } if systemdict /.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 /.forcecopynew .undef % remove temptation systemdict /.forcedef .undef % ditto systemdict /.forceput .undef % ditto systemdict /.forceundef .undef % ditto } 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 }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).
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