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Editing: gs_btokn.ps
% 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 binary tokens. % When this is run, systemdict is still writable, % but everything defined here goes into level2dict. % Define whether or not to allow writing dictionaries. % This is a non-standard feature! /WRITEDICTS //false def languagelevel 1 .setlanguagelevel level2dict begin % Initialization for the system name table. mark % 0 /abs /add /aload /anchorsearch /and /arc /arcn /arct /arcto /array /ashow /astore /awidthshow /begin /bind /bitshift /ceiling /charpath /clear /cleartomark % 20 /clip /clippath /closepath /concat /concatmatrix /copy /count /counttomark /currentcmykcolor /currentdash /currentdict /currentfile /currentfont /currentgray /currentgstate /currenthsbcolor /currentlinecap /currentlinejoin /currentlinewidth /currentmatrix % 40 /currentpoint /currentrgbcolor /currentshared /curveto /cvi /cvlit /cvn /cvr /cvrs /cvs /cvx /def /defineusername /dict /div /dtransform /dup /end /eoclip /eofill % 60 /eoviewclip /eq /exch /exec /exit /file /fill /findfont /flattenpath /floor /flush /flushfile /for /forall /ge /get /getinterval /grestore /gsave /gstate % 80 /gt /identmatrix /idiv /idtransform /if /ifelse /image /imagemask /index /ineofill /infill /initviewclip /inueofill /inufill /invertmatrix /itransform /known /le /length /lineto % 100 /load /loop /lt /makefont /matrix /maxlength /mod /moveto /mul /ne /neg /newpath /not /null /or /pathbbox /pathforall /pop /print /printobject % 120 /put /putinterval /rcurveto /read /readhexstring /readline /readstring /rectclip /rectfill /rectstroke /rectviewclip /repeat /restore /rlineto /rmoveto /roll /rotate /round /save /scale % 140 /scalefont /search /selectfont /setbbox /setcachedevice /setcachedevice2 /setcharwidth /setcmykcolor /setdash /setfont /setgray /setgstate /sethsbcolor /setlinecap /setlinejoin /setlinewidth /setmatrix /setrgbcolor /setshared /shareddict % 160 /show /showpage /stop /stopped /store /string /stringwidth /stroke /strokepath /sub /systemdict /token /transform /translate /truncate /type /uappend /ucache /ueofill /ufill % 180 /undef /upath /userdict /ustroke /viewclip /viewclippath /where /widthshow /write /writehexstring /writeobject /writestring /wtranslation /xor /xshow /xyshow /yshow /FontDirectory /SharedFontDirectory /Courier % 200 /Courier-Bold /Courier-BoldOblique /Courier-Oblique /Helvetica /Helvetica-Bold /Helvetica-BoldOblique /Helvetica-Oblique /Symbol /Times-Bold /Times-BoldItalic /Times-Italic /Times-Roman /execuserobject /currentcolor /currentcolorspace /currentglobal /execform /filter /findresource /globaldict % 220 /makepattern /setcolor /setcolorspace /setglobal /setpagedevice /setpattern % pad to 256 counttomark 256 exch sub { 0 } repeat % 256 /= /== /ISOLatin1Encoding /StandardEncoding % 260 ([) cvn (]) cvn /atan /banddevice /bytesavailable /cachestatus /closefile /colorimage /condition /copypage /cos /countdictstack /countexecstack /cshow /currentblackgeneration /currentcacheparams /currentcolorscreen /currentcolortransfer /currentcontext /currentflat % 280 /currenthalftone /currenthalftonephase /currentmiterlimit /currentobjectformat /currentpacking /currentscreen /currentstrokeadjust /currenttransfer /currentundercolorremoval /defaultmatrix /definefont /deletefile /detach /deviceinfo /dictstack /echo /erasepage /errordict /execstack /executeonly % 300 /exp /false /filenameforall /fileposition /fork /framedevice /grestoreall /handleerror /initclip /initgraphics /initmatrix /instroke /inustroke /join /kshow /ln /lock /log /mark /monitor % 320 /noaccess /notify /nulldevice /packedarray /quit /rand /rcheck /readonly /realtime /renamefile /renderbands /resetfile /reversepath /rootfont /rrand /run /scheck /setblackgeneration /setcachelimit /setcacheparams % 340 /setcolorscreen /setcolortransfer /setfileposition /setflat /sethalftone /sethalftonephase /setmiterlimit /setobjectformat /setpacking /setscreen /setstrokeadjust /settransfer /setucacheparams /setundercolorremoval /sin /sqrt /srand /stack /status /statusdict % 360 /true /ucachestatus /undefinefont /usertime /ustrokepath /version /vmreclaim /vmstatus /wait /wcheck /xcheck /yield /defineuserobject /undefineuserobject /UserObjects /cleardictstack % 376 /A /B /C /D /E /F /G /H /I /J /K /L /M /N /O /P /Q /R /S /T /U /V /W /X /Y /Z /a /b /c /d /e /f /g /h /i /j /k /l /m /n /o /p /q /r /s /t /u /v /w /x /y /z % 428 /setvmthreshold (<<) cvn (>>) cvn /currentcolorrendering /currentdevparams /currentoverprint /currentpagedevice /currentsystemparams /currentuserparams /defineresource /findencoding /gcheck % 440 /glyphshow /languagelevel /product /pstack /resourceforall /resourcestatus /revision /serialnumber /setcolorrendering /setdevparams /setoverprint /setsystemparams /setuserparams /startjob /undefineresource /GlobalFontDirectory /ASCII85Decode /ASCII85Encode /ASCIIHexDecode /ASCIIHexEncode % 460 /CCITTFaxDecode /CCITTFaxEncode /DCTDecode /DCTEncode /LZWDecode /LZWEncode /NullEncode /RunLengthDecode /RunLengthEncode /SubFileDecode /CIEBasedA /CIEBasedABC /DeviceCMYK /DeviceGray /DeviceRGB /Indexed /Pattern /Separation /CIEBasedDEF /CIEBasedDEFG % 480 /DeviceN % 481 -- end //.packtomark exec .installsystemnames % Define printobject and writeobject. % These are mostly implemented in PostScript, so that we don't have to % worry about interrupts or callbacks when writing to the output file. % Define procedures for accumulating the space required to represent % an object in binary form. The procedures for composite objects (arrays % and dictionaries) leave different results on the stack: % <#refs> <#chars> <simple_obj> -proc- <#refs> <#chars> % <#refs> <#chars> <array|dict> -proc- <array|dict> <#refs> <#chars> % This is required so that .writeobjects can also accumulate the actual % list of composite objects to write in the binary object sequence. /cntdict mark /integertype /pop load /realtype 1 index /marktype 1 index /nulltype 1 index /booleantype 1 index /nametype { length add } bind /stringtype 1 index /arraytype //null /dicttype //null .dicttomark def /.cntobj { % <<arguments and results as for procedures in cntdict>> dup type //cntdict exch get exec } .bind def cntdict /arraytype { dup dup length 5 -1 roll add 4 2 roll { //.cntobj exec } forall } bind put cntdict /dicttype { WRITEDICTS { dup dup length 2 mul 5 -1 roll add 4 2 roll { % We have to use .execn here, rather than simply rolling the % value under the top elements, because key might involve arrays % or dictionaries. cvlit {//.cntobj exec} exch 2 .execn //.cntobj exec } forall } { /writeobject .systemvar /typecheck signalerror } ifelse } bind put /w2dict mark /nametype { 2 copy .writecvs pop } bind /stringtype 1 index .dicttomark def /.bosheader { % <top_length> <total_length> <string8> .bosheader % <string4|8> dup 0 currentobjectformat 127 add put % object format => BOS tag 2 index 255 le 2 index 65531 le and { % Use the short header format: tag toplen(1) totlen(2) exch 4 add exch 0 4 getinterval dup 1 5 -1 roll put } { % Use the long header format: tag 0(1) toplen(2) totlen(4) exch 8 add exch 0 0 4 2 roll .bosobject exch pop exch pop % store with byte swapping } ifelse % Stack: shortlen str exch dup -8 bitshift exch 255 and % str hibyte lobyte currentobjectformat 1 and 0 eq { % lsb first exch } if 2 index 3 3 -1 roll put 1 index 2 3 -1 roll put } .bind def /.writeobjects { % <file> <tag> <array> .writeobjects - mark exch % Count the space required for refs and strings. dup length 0 3 -1 roll % Stack: file tag -mark- #refs #chars array dup 4 1 roll { //.cntobj exec } forall % Write the header. % Stack: file tag -mark- array1 ... (array|dict)N #refs #chars counttomark 3 add -2 roll 4 1 roll % Stack: -mark- array1 ... (array|dict)N tag #refs #chars file dup counttomark 1 sub index length 4 index 3 bitshift 4 index add (xxxxxxxx) //.bosheader exec writestring % Write the objects per se. 3 1 roll pop counttomark 1 sub index length 3 bitshift exch 3 bitshift % Stack: -mark- array1 ... (array|dict)N tag file ref# char# counttomark 4 sub { counttomark -1 roll dup 6 1 roll % Stack: ... objN tag file ref# char# objN dup type /dicttype eq { % can't be first object { 5 1 roll (x\000xxxxxx) .bosobject 3 index exch writestring 4 -1 roll (x\000xxxxxx) .bosobject 3 index exch writestring } forall } { { (x\000xxxxxx) .bosobject dup 1 6 index put 3 index exch writestring 4 -1 roll pop 0 4 1 roll % clear tag } forall } ifelse } repeat % Write the strings and names. pop pop exch pop % Stack: -mark- array1 ... array|dictN file counttomark 1 sub { counttomark -1 roll { % The counting pass ensured that the keys and values % of any dictionary must be writable objects. % Hence, we are processing a dictionary iff % the next-to-top stack element is not a file. 1 index type /filetype ne { exch 2 index exch dup type //w2dict exch .knownget { exec } { pop } ifelse pop } if dup type //w2dict exch .knownget { exec } { pop } ifelse } forall } repeat % Clean up. % Stack: -mark- file pop pop } .bind def /.writeobject { 3 copy exch % We must allocate the array in local VM % to avoid a possible invalidaccess. .currentglobal //false .setglobal exch 1 array astore exch .setglobal //.writeobjects exec pop pop pop } .bind def /printobject { % <obj> <tag> printobject - currentobjectformat 0 eq { /printobject .systemvar /undefined signalerror } if (%stdout) (w) file 2 index 2 index //.writeobject exec pop pop } odef /writeobject { % <file> <obj> <tag> writeobject - currentobjectformat 0 eq { /writeobject .systemvar /undefined signalerror } if 2 .argindex pop % check # of args //.writeobject exec } odef % Implement binary error message output. /.objectprinttest { % <obj> .objectprinttest - % This is a pseudo-operator so it will restore the stack % if it gets an error. mark 0 0 3 .argindex //.cntobj exec cleartomark pop } bind def /.printerror { $error /binary get .languagelevel 2 ge and { currentobjectformat 0 ne { [ /Error $error /errorname get $error /command get % Convert the object with cvs if it isn't printable. dup { //.objectprinttest exec } //.internalstopped exec { pop 100 string cvs } if //false ] 250 printobject } //.printerror % known to be a procedure ifelse } //.printerror % known to be a procedure ifelse } bind def currentdict /cntdict .undef currentdict /w2dict .undef % End of level2dict end .setlanguagelevel % undefine things defined in this file and not referenced elsewhere [ /.objectprinttest /.bosheader /.cntobj /.writeobject /.writeobjects ] {level2dict exch .forceundef} forall
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