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% Copyright (C) 2001-2019 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 % indicate places where the next lines should be replaced by % the contents of , 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! 927 % 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 } executeonly if 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 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 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 % 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 % .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 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 ( \() 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 exec flush } if currentdict /printgreeting .undef % Define a special version of def for making operator procedures. /obind { % obind 1 index exch .makeoperator } .bind def /odef { % odef - 1 index exch .makeoperator def } .bind def % Define procedures for accessing variables in systemdict and userdict % regardless of the contents of the dictionary stack. /.systemvar { % .systemvar //systemdict exch get } .bind executeonly odef /.systemexec { .systemvar exec } .bind executeonly odef /.userdict { % - .userdict /userdict .systemvar } .bind executeonly odef /.uservar { % .uservar .userdict exch get } .bind executeonly 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 } executeonly if %**************** BACKWARD COMPATIBILITY **************** /hwsizedict mark /HWSize //null .dicttomark readonly def /copyscanlines { % copyscanlines 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 % 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 } bind executeonly odef /.writecvs { 0 .writecvp } bind 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 } bind def % use .max instead /min { .min } bind def % use .min instead %**************** END OF BACKWARD COMPATIBILITY SECTION **************** % Utility for removing all entries from a dictionary /.PurgeDict % .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 % % - 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 } .bind executeonly 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 - .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 } .bind executeonly odef % Guard similarly against EndPage not popping its operand. /.endpage { % .endpage .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 } .bind executeonly 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 } .bind executeonly 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 % 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 } bind executeonly 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 { % .execute stopped $error /newerror get and { /handleerror .systemvar exec flush //true } { //false } ifelse } bind def % Define an execute analogue of runlibfile0. /execute0 { % execute0 - //.execute exec { /execute0 cvx 1 .quit } if } bind 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 } bind def currentdict /.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 } bind executeonly 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 JOBSERVER { { /.GShandleerror .systemvar //.internalstopped exec pop } bind % always use .GShandleerror. } { { /errordict .systemvar /handleerror get //.internalstopped exec 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 { (GS) print count 0 ne { (<) print count =only } if (>) print flush } bind def /prompt { flush flushpage NOPROMPT not { //.promptmsg exec} if } bind def currentdict /.promptmsg .undef /pstack { 0 1 count 3 sub { index == } for } bind def /putdeviceprops { .putdeviceprops { erasepage } if } bind executeonly 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: % .runexec1 .runexec2 /.runexec1 { % .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 executeonly def /.runexec2 { % .runexec2 - exch { .runexec } { dup type /filetype ne { cvx exec } if closefile } ifelse } bind def /.runexec { % .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 /.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 executeonly 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 exec } { pop } ifelse } bind executeonly def % In LanguageLevel 3, copypage erases the page. /copypage { .languagelevel 3 ge dup { 0 } { 1 } ifelse .endpage .doneshowpage { .currentnumcopies 1 index .outputpage (>>copypage, press to continue<<\n) //.confirm exec dup { erasepage } if } if pop systemdict /..page_default_spaces .knownget { //.PurgeDict exec } if .beginpage } .bind executeonly odef /showpage { 0 .endpage .doneshowpage { .currentnumcopies //true .outputpage (>>showpage, press 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 } .bind executeonly 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 /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. /.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 } executeonly def systemdict /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 } bind def /copyarray { dup length array copy } bind def % Copy a dictionary per the Level 2 spec even in Level 1. /.copydict % .copydict { dup 3 -1 roll { put dup } forall pop } 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 exec .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 exec} 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 /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 % signalerror - { /errordict .systemvar exch get exec } bind def /signaloperror { % 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 { % copydevice //false .copydevice2 } odef /finddevice { % finddevice /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 { % findprotodevice /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 { % .execasresource - /stopped .systemvar /.currentresourcefile .uservar % Stack: file proc -stopped- currfile .userdict /.currentresourcefile 5 index cvlit put 2 .execn % stopped .userdict /.currentresourcefile 3 -1 roll put { stop } if } bind executeonly def /.runresource { % .runresource - { /run .systemvar exec } .execasresource } bind 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 } 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 def currentdict /runlibfile0 .undef % Create the error handling machinery. % Define the standard error handlers. % The interpreter has created the ErrorNames array. /.unstoppederrorhandler % .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 % .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 exec } 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 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. $error /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. $error /globalmode get $error /.nosetlocal get and .setglobal $error /.inerror //false put stop } bind executeonly def currentdict /.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. % <==flag> proc { currentdict exch .knownget % stackname defined in $error? { 4 1 roll % stack: <==flag> /errordict .systemvar exch .knownget % overridename defined? { exch pop exch pop exec % call override with } { exch print exch % print heading. stack <==flag> 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 /.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 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 } bind executeonly def currentdict /.printerror_long .undef % Define $error. This must be in local VM. .currentglobal //false .setglobal currentdict /$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 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. 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 % .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 } bind def /.registererror % .registererror - { errordict exch //.registererror2 exec } bind def currentdict /.registererror2 .undef ErrorNames { .registererror} 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 exec 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 /unknownerror eq {pop} { dup errordict exch get 2 index 3 1 roll put }ifelse }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. 1183615869 internaldict dup /.delayed_init_queue 10 dict put /.schedule_init % .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 } bind 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 } bind def end (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 } 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 { % .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 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 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 { % .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 { % .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 { % .sethireshalftone % 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 { % .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 } 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 % 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 % gsgetdeviceprop { 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 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: 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 } bind def currentdict /.gsgetdeviceprop .forceundef /.setdefaulthalftone { //.getdefaulthalftone exec { sethalftone } { % default not found //.useloresscreen exec { .setloreshalftone } { .sethireshalftone pop } ifelse } ifelse } bind def /.setdefaultscreen { //.useloresscreen exec { .setloresscreen } { .sethiresscreen } ifelse //.setdefaultbgucr exec } bind def currentdict /.setdefaultbgucr .undef currentdict /.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 } bind def % false