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Diffstat (limited to 'Master/xemtex/gslib/gs_lev2.ps')
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diff --git a/Master/xemtex/gslib/gs_lev2.ps b/Master/xemtex/gslib/gs_lev2.ps new file mode 100644 index 00000000000..70b62018752 --- /dev/null +++ b/Master/xemtex/gslib/gs_lev2.ps @@ -0,0 +1,935 @@ +% Copyright (C) 1990, 2000 Aladdin Enterprises. All rights reserved. +% +% This program is free software; you can redistribute it and/or modify it +% under the terms of the GNU General Public License as published by the +% Free Software Foundation; either version 2 of the License, or (at your +% option) any later version. +% +% This program is distributed in the hope that it will be useful, but +% WITHOUT ANY WARRANTY; without even the implied warranty of +% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General +% Public License for more details. +% +% You should have received a copy of the GNU General Public License along +% with this program; if not, write to the Free Software Foundation, Inc., +% 59 Temple Place, Suite 330, Boston, MA, 02111-1307. + +% $Id: gs_lev2.ps,v 1.7.2.4.2.3 2003/04/12 14:02:38 giles Exp $ +% Initialization file for Level 2 functions. +% When this is run, systemdict is still writable, +% but (almost) everything defined here goes into level2dict. + +level2dict begin + +% ------ System and user parameters ------ % + +% User parameters must obey save/restore, and must also be maintained +% per-context. We implement the former, and some of the latter, here +% with PostScript code. NOTE: our implementation assumes that user +% parameters change only as a result of setuserparams -- that there are +% no user parameters that are ever changed dynamically by the interpreter +% (although the interpreter may adjust the value presented to setuserparams) +% +% There are two types of user parameters: those which are actually +% maintained in the interpreter, and those which exist only at the +% PostScript level. We maintain the current state of both types in +% a read-only local dictionary named userparams, defined in systemdict. +% In a multi-context system, each context has its own copy of this +% dictionary. In addition, there is a constant dictionary named +% psuserparams where each key is the name of a user parameter that exists +% only in PostScript and the value is a procedure to check that the value +% is legal: setuserparams uses this for checking the values. +% setuserparams updates userparams explicitly, in addition to setting +% any user parameters in the interpreter; thus we can use userparams +% to reset those parameters after a restore or a context switch. +% NOTE: the name userparams is known to the interpreter, and in fact +% the interpreter creates the userparams dictionary. + +% Check parameters that are managed at the PostScript level. +/.checkparamtype { % <newvalue> <type> .checkparamtype <bool> + exch type eq +} .bind def +/.checksetparams { % <newdict> <opname> <checkdict> + % .checksetparams <newdict> + 2 index { + % Stack: newdict opname checkdict key newvalue + 3 copy 3 1 roll .knownget { + exec not { + pop pop pop load /typecheck signalerror + } if + dup type /stringtype eq { + dup rcheck not { + pop pop pop load /invalidaccess signalerror + } if + } if + } { + pop + } ifelse pop pop + } forall pop pop +} .bind def % not odef, shouldn't reset stacks + +% currentuser/systemparams creates and returns a dictionary in the +% current VM. The easiest way to make this work is to copy any composite +% PostScript-level parameters to global VM. Currently we have strings +% as well as arrays. For arrays, we also need to copy any contents that +% are in VM. Also copying string parameters insures the contents won't +% be changed. Also be careful to preserve 'executable' state. +/.copyparam { % <value> .copyparam <value'> + dup type /arraytype eq { + .currentglobal true .setglobal exch + dup xcheck exch % original executable state + [ exch { + dup type dup /arraytype eq exch /stringtype eq or { + .copyparam % recurse to handle composite array elements + } if + } forall ] + exch { cvx } if % set executable state + exch .setglobal + } if + dup type /stringtype eq { + .currentglobal true .setglobal + 1 index length string exch .setglobal + copy readonly + } if +} .bind def + +% Some user parameters are managed entirely at the PostScript level. +% We take care of that here. +systemdict begin +/psuserparams 48 dict def +/getuserparam { % <name> getuserparam <value> + /userparams .systemvar 1 index get exch pop +} odef +% Fill in userparams (created by the interpreter) with current values. +mark .currentuserparams +counttomark 2 idiv { + userparams 3 1 roll put +} repeat pop +/.definepsuserparam { % <name> <value> .definepsuserparam - + psuserparams 3 copy pop + type cvlit /.checkparamtype cvx 2 packedarray cvx put + userparams 3 1 roll put +} .bind def +end +/currentuserparams { % - currentuserparams <dict> + /userparams .systemvar dup length dict .copydict +} odef +/setuserparams { % <dict> setuserparams - + % Check that we will be able to set the PostScript-level + % user parameters. + /setuserparams /psuserparams .systemvar .checksetparams + % Set the C-level user params. If this succeeds, we know that + % the password check succeeded. + dup .setuserparams + % Now set the PostScript-level params. + % The interpreter may have adjusted the values of some of the + % parameters, so we have to read them back. + dup { + /userparams .systemvar 2 index known { + psuserparams 2 index known not { + pop dup .getuserparam + } if + .copyparam + /userparams .systemvar 3 1 roll .forceput % userparams is read-only + } { + pop pop + } ifelse + } forall + % A context switch might have occurred during the above loop, + % causing the interpreter-level parameters to be reset. + % Set them again to the new values. From here on, we are safe, + % since a context switch will consult userparams. + .setuserparams +} .bind odef +% Initialize user parameters managed here. +/JobName () .definepsuserparam + +% Restore must restore the user parameters. +% (Since userparams is in local VM, save takes care of saving them.) +/restore { % <save> restore - + //restore /userparams .systemvar .setuserparams +} .bind odef + +% The pssystemparams dictionary holds some system parameters that +% are managed entirely at the PostScript level. +systemdict begin +currentdict /pssystemparams known not { + /pssystemparams 40 dict readonly def +} if +/getsystemparam { % <name> getsystemparam <value> + //pssystemparams 1 index .knownget { exch pop } { .getsystemparam } ifelse +} odef +end +/currentsystemparams { % - currentsystemparams <dict> + mark .currentsystemparams //pssystemparams { } forall .dicttomark +} odef +/setsystemparams { % <dict> setsystemparams - + % Check that we will be able to set the PostScript-level + % system parameters. + /SAFETY .systemvar /safe get { + % SAFER mode disallows some changes + [ /GenericResourceDir /FontResourceDir /GenericResourcePathSep ] { + 2 copy .knownget { + exch //pssystemparams exch .knownget { + ne { /setsystemparams /invalidaccess signalerror } if + } { + pop + } ifelse + } { + pop + } ifelse + } forall + } if + /setsystemparams //pssystemparams mark exch { + type cvlit /.checkparamtype cvx 2 packedarray cvx + } forall .dicttomark .checksetparams + % Set the C-level system params. If this succeeds, we know that + % the password check succeeded. + dup .setsystemparams + % Now set the PostScript-level params. We must copy local strings + % into global VM. + dup + { //pssystemparams 2 index known + { % Stack: key newvalue + .copyparam + //pssystemparams 3 1 roll .forceput % pssystemparams is read-only + } + { pop pop + } + ifelse + } + forall pop +} .bind odef + +% Initialize the passwords. +% NOTE: the names StartJobPassword and SystemParamsPassword are known to +% the interpreter, and must be bound to noaccess strings. +% The length of these strings must be max_password (iutil2.h) + 1. +/StartJobPassword 65 string noaccess def +/SystemParamsPassword 65 string noaccess def + +% Redefine cache parameter setting to interact properly with userparams. +/setcachelimit { + mark /MaxFontItem 2 index .dicttomark setuserparams pop +} .bind odef +/setcacheparams { + % The MaxFontCache parameter is a system parameter, which we might + % not be able to set. Fortunately, this doesn't matter, because + % system parameters don't have to be synchronized between this code + % and the VM. + counttomark 1 add copy setcacheparams + currentcacheparams % mark size lower upper + 3 -1 roll pop + /MinFontCompress 3 1 roll + /MaxFontItem exch + .dicttomark setuserparams + cleartomark +} .bind odef + +% Add bogus user and system parameters to satisfy badly written PostScript +% programs that incorrectly assume the existence of all the parameters +% listed in Appendix C of the Red Book. Note that some of these may become +% real parameters later: code near the end of gs_init.ps takes care of +% removing any such parameters from ps{user,system}params. + +% psuserparams + /MaxFormItem 100000 .definepsuserparam + /MaxPatternItem 20000 .definepsuserparam + /MaxScreenItem 48000 .definepsuserparam + /MaxUPathItem 5000 .definepsuserparam + +% File Access Permission parameters + .currentglobal true .setglobal + /.checkFilePermitparams { + type /arraytype eq { + currentuserparams /LockFilePermissions get { + 5 { pop } repeat /setuserparams /invalidaccess signalerror + } + if + } { + 5 { pop } repeat /setuserparams /typecheck signalerror + } + ifelse + true + } .bind def +% Initialize the File Permission access control to wide open +% These will only be accessed via current/set userparams. +% Values are a string containing multiple nul terminated path strings + /PermitFileReading dup [ (*) ] .definepsuserparam + psuserparams exch /.checkFilePermitparams load put + /PermitFileWriting dup [ (*) ] .definepsuserparam + psuserparams exch /.checkFilePermitparams load put + /PermitFileControl dup [ (*) ] .definepsuserparam + psuserparams exch /.checkFilePermitparams load put + .setglobal + +pssystemparams begin + /CurDisplayList 0 .forcedef + /CurFormCache 0 .forcedef + /CurOutlineCache 0 .forcedef + /CurPatternCache 0 .forcedef + /CurUPathCache 0 .forcedef + /CurScreenStorage 0 .forcedef + /CurSourceList 0 .forcedef + /DoPrintErrors false .forcedef + /MaxDisplayList 140000 .forcedef + /MaxFormCache 100000 .forcedef + /MaxOutlineCache 65000 .forcedef + /MaxPatternCache 100000 .forcedef + /MaxUPathCache 300000 .forcedef + /MaxScreenStorage 84000 .forcedef + /MaxSourceList 25000 .forcedef + /RamSize 4194304 .forcedef +end + +% Define the procedures for handling comment scanning. The names +% %ProcessComment and %ProcessDSCComment are known to the interpreter. +% These procedures take the file and comment string and file as operands. +/.checkprocesscomment { + dup null eq { + pop true + } { + dup xcheck { + type dup /arraytype eq exch /packedarraytype eq or + } { + pop false + } ifelse + } ifelse +} .bind def +/ProcessComment null .definepsuserparam +psuserparams /ProcessComment {.checkprocesscomment} put +(%ProcessComment) cvn { + /ProcessComment getuserparam + dup null eq { pop pop pop } { exec } ifelse +} bind def +/ProcessDSCComment null .definepsuserparam +psuserparams /ProcessDSCComment {.checkprocesscomment} put +(%ProcessDSCComment) cvn { + /ProcessDSCComment getuserparam + dup null eq { pop pop pop } { exec } ifelse +} bind def + +% ------ Miscellaneous ------ % + +(<<) cvn % - << -mark- + /mark load def +(>>) cvn % -mark- <key1> <value1> ... >> <dict> + /.dicttomark load def +/languagelevel 2 def +% When running in Level 2 mode, this interpreter is supposed to be +% compatible with Adobe version 2017. +/version (2017) readonly def + +% If binary tokens are supported by this interpreter, +% set an appropriate default binary object format. +/setobjectformat where + { pop + /RealFormat getsystemparam (IEEE) eq { 1 } { 3 } ifelse + /ByteOrder getsystemparam { 1 add } if + setobjectformat + } if + +% Aldus Freehand versions 2.x check for the presence of the +% setcolor operator, and if it is missing, substitute a procedure. +% Unfortunately, the procedure takes different parameters from +% the operator. As a result, files produced by this application +% cause an error if the setcolor operator is actually defined +% and 'bind' is ever used. Aldus fixed this bug in Freehand 3.0, +% but there are a lot of files created by the older versions +% still floating around. Therefore, at Adobe's suggestion, +% we implement the following dreadful hack in the 'where' operator: +% If the key is /setcolor, and +% there is a dictionary named FreeHandDict, and +% currentdict is that dictionary, +% then "where" consults only that dictionary and not any other +% dictionaries on the dictionary stack. +.wheredict /setcolor { + /FreeHandDict .where { + /FreeHandDict get currentdict eq { + pop currentdict /setcolor known { currentdict true } { false } ifelse + } { + .where + } ifelse + } { + .where + } ifelse +} bind put + +% ------ Virtual memory ------ % + +/currentglobal % - currentglobal <bool> + /currentshared load def +/gcheck % <obj> gcheck <bool> + /scheck load def +/setglobal % <bool> setglobal - + /setshared load def +% We can make the global dictionaries very small, because they auto-expand. +/globaldict currentdict /shareddict .knownget not { 4 dict } if def +/GlobalFontDirectory SharedFontDirectory def + +% VMReclaim and VMThreshold are user parameters. +/setvmthreshold { % <int> setvmthreshold - + mark /VMThreshold 2 index .dicttomark setuserparams pop +} odef +/vmreclaim { % <int> vmreclaim - + dup 0 gt { + .vmreclaim + } { + mark /VMReclaim 2 index .dicttomark setuserparams pop + } ifelse +} odef +-1 setvmthreshold + +% ------ IODevices ------ % + +/.getdevparams where { + pop /currentdevparams { % <iodevice> currentdevparams <dict> + .getdevparams .dicttomark + } odef +} if +/.putdevparams where { + pop /setdevparams { % <iodevice> <dict> setdevparams - + mark 1 index { } forall counttomark 2 add index + .putdevparams pop pop + } odef +} if + +% ------ Job control ------ % + +serverdict begin + +% We could protect the job information better, but we aren't attempting +% (currently) to protect ourselves against maliciousness. + +/.jobsave null def % top-level save object +/.jobsavelevel 0 def % save depth of job (0 if .jobsave is null, + % 1 otherwise) +/.adminjob true def % status of current unencapsulated job + +end % serverdict + +% Because there may be objects on the e-stack created since the job save, +% we have to clear the e-stack before doing the end-of-job restore. +% We do this by executing a 2 .stop, which is caught by the 2 .stopped +% in .runexec; we leave on the o-stack a procedure to execute aftewards. +% +%**************** The definition of startjob is not complete yet, since +% it doesn't reset stdin/stdout. +/.startnewjob { % <exit_bool> <password_level> + % .startnewjob - + serverdict /.jobsave get dup null eq { pop } { restore } ifelse + exch { + % Unencapsulated job + serverdict /.jobsave null put + serverdict /.jobsavelevel 0 put + serverdict /.adminjob 3 -1 roll 1 gt put + % The Adobe documentation doesn't say what happens to the + % graphics state stack in this case, but an experiment + % produced results suggesting that a grestoreall occurs. + grestoreall + } { + % Encapsulated job + pop + serverdict /.jobsave save put + serverdict /.jobsavelevel 1 put + } ifelse + % Reset the interpreter state. + clear cleardictstack + initgraphics + false setglobal +} bind def +/.startjob { % <exit_bool> <password> <finish_proc> + % .startjob <ok_bool> + vmstatus pop pop serverdict /.jobsavelevel get eq + 2 index .checkpassword 0 gt and { + exch .checkpassword exch count 3 roll count 3 sub { pop } repeat + cleardictstack + % Reset the e-stack back to the 2 .stopped in .runexec, + % passing the finish_proc to be executed afterwards. + 2 .stop + } { % Password check failed + pop pop pop false + } ifelse +} odef +/startjob { % <exit_bool> <password> startjob <ok_bool> + % This is a hack. We really need some way to indicate explicitly + % to the interpreter that we are under control of a job server. + .userdict /quit /stop load put + { .startnewjob true } .startjob +} odef + +systemdict begin +/quit { % - quit - + //systemdict begin serverdict /.jobsave get null eq + { end //quit } + { /quit load /invalidaccess /signalerror load end exec } + ifelse +} bind odef +end + +% We would like to define exitserver as a procedure, using the code +% that the Red Book says is equivalent to it. However, since startjob +% resets the exec stack, we can't do this, because control would never +% proceed past the call on startjob if the exitserver is successful. +% Instead, we need to construct exitserver out of pieces of startjob. + +serverdict begin + +/exitserver { % <password> exitserver - + true exch { .startnewjob } .startjob not { + /exitserver /invalidaccess signalerror + } if +} bind def + +end % serverdict + +% ------ Compatibility ------ % + +% In Level 2 mode, the following replace the definitions that gs_statd.ps +% installs in statusdict and serverdict. +% Note that statusdict must be allocated in local VM. +% We don't bother with many of these yet. + +/.dict1 { exch mark 3 1 roll .dicttomark } bind def + +currentglobal false setglobal 25 dict exch setglobal begin +currentsystemparams + +% The following do not depend on the presence of setpagedevice. +/buildtime 1 index /BuildTime get def +/byteorder 1 index /ByteOrder get def +/checkpassword { .checkpassword 0 gt } bind def +dup /DoStartPage known + { /dostartpage { /DoStartPage getsystemparam } bind def + /setdostartpage { /DoStartPage .dict1 setsystemparams } bind def + } if +dup /StartupMode known + { /dosysstart { /StartupMode getsystemparam 0 ne } bind def + /setdosysstart { { 1 } { 0 } ifelse /StartupMode .dict1 setsystemparams } bind def + } if +%****** Setting jobname is supposed to set userparams.JobName, too. +/jobname { /JobName getuserparam } bind def +/jobtimeout { /JobTimeout getuserparam } bind def +/ramsize { /RamSize getsystemparam } bind def +/realformat 1 index /RealFormat get def +dup /PrinterName known + { /setprintername { /PrinterName .dict1 setsystemparams } bind def + } if +/printername + { currentsystemparams /PrinterName .knownget not { () } if exch copy + } bind def +currentuserparams /WaitTimeout known + { /waittimeout { /WaitTimeout getuserparam } bind def + } if + +% The following do require setpagedevice. +/.setpagedevice where { pop } { (%END PAGEDEVICE) .skipeof } ifelse +/defaulttimeouts + { currentsystemparams dup + /JobTimeout .knownget not { 0 } if + exch /WaitTimeout .knownget not { 0 } if + currentpagedevice /ManualFeedTimeout .knownget not { 0 } if + } bind def +/margins + { currentpagedevice /Margins .knownget { exch } { [0 0] } ifelse + } bind def +/pagemargin + { currentpagedevice /PageOffset .knownget { 0 get } { 0 } ifelse + } bind def +/pageparams + { currentpagedevice + dup /Orientation .knownget { 1 and ORIENT1 { 1 xor } if } { 0 } ifelse exch + dup /PageSize get aload pop 3 index 0 ne { exch } if 3 2 roll + /PageOffset .knownget { 0 get } { 0 } ifelse 4 -1 roll + } bind def +/setdefaulttimeouts + { exch mark /ManualFeedTimeout 3 -1 roll + /Policies mark /ManualFeedTimeout 1 .dicttomark + .dicttomark setpagedevice + /WaitTimeout exch mark /JobTimeout 5 2 roll .dicttomark setsystemparams + } bind def +/.setpagesize { 2 array astore /PageSize .dict1 setpagedevice } bind def +/setduplexmode { /Duplex .dict1 setpagedevice } bind def +/setmargins + { exch 2 array astore /Margins .dict1 setpagedevice + } bind def +/setpagemargin { 0 2 array astore /PageOffset .dict1 setpagedevice } bind def +/setpageparams + { mark /PageSize 6 -2 roll + 4 index 1 and ORIENT1 { 1 } { 0 } ifelse ne { exch } if 2 array astore + /Orientation 5 -1 roll ORIENT1 { 1 xor } if + /PageOffset counttomark 2 add -1 roll 0 2 array astore + .dicttomark setpagedevice + } bind def +/setresolution + { dup 2 array astore /HWResolution .dict1 setpagedevice + } bind def +%END PAGEDEVICE + +% The following are not implemented yet. +%manualfeed +%manualfeedtimeout +%pagecount +%pagestackorder +%setpagestackorder + +pop % currentsystemparams + +% Flag the current dictionary so it will be swapped when we +% change language levels. (See zmisc2.c for more information.) +/statusdict currentdict def + +currentdict end +/statusdict exch .forcedef % statusdict is local, systemdict is global + +% The following compatibility operators are in systemdict. They are +% defined here, rather than in gs_init.ps, because they require the +% resource machinery. + +/devforall { % <pattern> <proc> <scratch> devforall - + exch { + 1 index currentdevparams + /Type .knownget { /FileSystem eq } { false } ifelse + { exec } { pop pop } ifelse + } /exec load 3 packedarray cvx exch + (*) 3 1 roll ppstack flush /IODevice resourceforall +} odef +/devstatus { % <(%disk*%)> devstatus <searchable> <writable> + % <hasNames> <mounted> <removable> <searchOrder> + % <freePages> <size> true + % <string> devstatus false + dup length 5 ge { + dup 0 5 getinterval (%disk) eq { + dup /IODevice resourcestatus { + pop pop dup currentdevparams + dup /Searchable get + exch dup /Writable get + exch dup /HasNames get + exch dup /Mounted get + exch dup /Removable get + exch dup /SearchOrder get + exch dup /Free get + exch /LogicalSize get + 9 -1 roll pop true + } { + pop false + } ifelse + } { + pop false + } ifelse + } { + pop false + } ifelse +} odef + +% ------ Color spaces ------ % + +% Attempt to convert a tint transformation procedure to a type 4 Function. +% The value <m> is the number of function inputs +% The current color space defines the number of function output values. +% The current color space will be the alternate color space for the function. +% If the conversion fails then build a color cube function. + +/.converttinttransform { % [.. .. .. proc ] <m> + % .converttinttransform [.. .. .. proc'] + .currentglobal % Save current global memory state + 2 index gcheck .setglobal % Set gobal mode to match the array's mode + 4 dict % Build a dictionary for our type 4 function + dup /FunctionType 4 put % Set FunctionType + dup /Function 5 index 3 get put % Set function expression + % Stack: orig m global func + dup /Domain + [ 5 index {0 1} repeat ] put % set Domain values + dup /Range + [ mark currentcolor counttomark + dup 2 add 1 roll cleartomark % # of components in alternate space + {0 1} repeat ] put % Set Range values + { .buildfunction } .internalstopped % Try to build a type 4 function + dup + { % type 4 function failed - Collect data for a color cube + pop % Remove duplicate copy of stopped status + pop % Remove invalid type 4 function + 1 index % Get number of inputs + mark currentcolor counttomark % Count number of output colors + dup 2 add 1 roll cleartomark % # of components in alternate space + 4 index 3 get % Get tint transform function + { .buildcolorcube } .internalstopped + } if + { % Color cube build failed + pop pop pop exch pop exch pop % Remove unused parameters + .setglobal % Restore global state + } { % Function build succeeded - install function + % Stack: orig m global func + 3 -1 roll pop % Stack: orig global func + 2 index 4 array copy dup 3 4 -1 roll put + exch .setglobal exch pop + } ifelse +} bind def + +% Define the setcolorspace procedures: +% <colorspace> proc <colorspace'|null> +% We have to define the dictionary first, so it can be bound into the +% implementation procedure, but we can't populate it until the procedure +% has been defined, so that the procedure can get bound into recursive calls. +/colorspacedict 20 dict def + +/.devcs [ + /DeviceGray /DeviceRGB /DeviceCMYK /DevicePixel +] readonly def +/currentcolorspace { % - currentcolorspace <array> + .currentcolorspace dup type /integertype eq { + //.devcs exch 1 getinterval + } if +} odef +currentdict /.devcs .undef + +/setcolorspace { % <name|array> setcolorspace - + dup dup dup type /nametype ne { 0 get } if + //colorspacedict exch get exec + dup null eq { pop } { .setcolorspace } ifelse pop +} odef + +colorspacedict + dup /DeviceGray { pop 0 setgray null } bind put + dup /DeviceRGB { pop 0 0 0 setrgbcolor null } bind put + /setcmykcolor where + { pop dup /DeviceCMYK { pop 0 0 0 1 setcmykcolor null } bind put + } if + /.setcieaspace where + { pop dup /CIEBasedA { NOCIE { pop 0 setgray null } { dup 1 get .setcieaspace } ifelse } bind put + } if + /.setcieabcspace where + { pop dup /CIEBasedABC { NOCIE { pop 0 0 0 setrgbcolor null } { dup 1 get .setcieabcspace } ifelse } bind put + } if + /.setciedefspace where + { pop dup /CIEBasedDEF { NOCIE { pop 0 0 0 setrgbcolor null } { dup 1 get .setciedefspace } ifelse } bind put + } if + /.setciedefgspace where + { pop dup /CIEBasedDEFG { NOCIE { pop 0 0 0 1 setcmykcolor null } { dup 1 get .setciedefgspace } ifelse } bind put + } if + /.setseparationspace where + { pop dup /Separation { dup 2 get setcolorspace dup 1 .converttinttransform .setseparationspace } bind put + } if + /.setindexedspace where + { pop dup /Indexed { dup 1 get setcolorspace dup .setindexedspace } bind put + } if + /.nullpatternspace [/Pattern] readonly def + /.setpatternspace where + { pop dup /Pattern + { dup type /nametype eq { pop //.nullpatternspace } if + dup length 1 gt { dup 1 get setcolorspace } if + dup .setpatternspace + } bind put + } if + % If DeviceN space is included, gs_ll3.ps registers it. + /.setdevicepixelspace where + { pop dup /DevicePixel { dup .setdevicepixelspace } bind put + } if + currentdict /.nullpatternspace .undef +pop + +% ------ CIE color rendering ------ % + +% Define findcolorrendering and a default ColorRendering ProcSet. + +/findcolorrendering { % <intentname> findcolorrendering + % <crdname> <found> + /ColorRendering /ProcSet findresource + 1 index .namestring (.) concatstrings + 1 index /GetPageDeviceName get exec .namestring (.) concatstrings + 2 index /GetHalftoneName get exec .namestring + concatstrings concatstrings + dup /ColorRendering resourcestatus { + pop pop exch pop exch pop true + } { + pop /GetSubstituteCRD get exec false + } ifelse +} odef + +5 dict dup begin + +/GetPageDeviceName { % - GetPageDeviceName <name> + currentpagedevice dup /PageDeviceName .knownget { + exch pop dup null eq { pop /none } if + } { + pop /none + } ifelse +} bind def + +/GetHalftoneName { % - GetHalftoneName <name> + currenthalftone /HalftoneName .knownget not { /none } if +} bind def + +/GetSubstituteCRD { % <intentname> GetSubstituteCRD <crdname> + pop /DefaultColorRendering +} bind def + +end +% The resource machinery hasn't been activated, so just save the ProcSet +% and let .fixresources finish the installation process. +/ColorRendering exch def + +% Define setcolorrendering. + +/.colorrenderingtypes 5 dict def + +/setcolorrendering { % <crd> setcolorrendering - + dup /ColorRenderingType get //.colorrenderingtypes exch get exec +} odef + +/.setcolorrendering1 where { pop } { (%END CRD) .skipeof } ifelse + +.colorrenderingtypes 1 { + dup .buildcolorrendering1 .setcolorrendering1 +} .bind put + +% Note: the value 101 in the next line must be the same as the value of +% GX_DEVICE_CRD1_TYPE in gscrdp.h. +.colorrenderingtypes 101 { + dup .builddevicecolorrendering1 .setdevicecolorrendering1 +} .bind put + +% Initialize the default CIE rendering dictionary. +% The most common CIE files seem to assume the "calibrated RGB color space" +% described on p. 189 of the PostScript Language Reference Manual, +% 2nd Edition; we simply invert this transformation back to RGB. +mark + /ColorRenderingType 1 +% We must make RangePQR and RangeLMN large enough so that values computed by +% the assumed encoding MatrixLMN don't get clamped. + /RangePQR [0 0.9505 0 1 0 1.0890] readonly +% This TransformPQR implements a relative colorimetric intent by scaling +% the XYZ values relative to the white and black points. + /TransformPQR + [ { 5 1 roll % p Ws Bs Wd Bd + 4 {3 get 5 1 roll} repeat % ws bs wd bd p + 3 index sub % ws bs wd bd p-bs + 1 index % ws bs wd bd p-bs bd + 6 2 roll % p-bs bd ws bs wd bd + sub % p-bs bd ws bs wd-bd + 5 1 roll % wd-bd p-bs bd ws bs + sub % wd-bd p-bs bd ws-bs + 4 2 roll % bd ws-bs wd-bd p-bs + mul % bd ws-bs (wd-bd)*(p-bs) + exch div add % bd + (wd-bd)*(p-bs)/(ws-bs) + } bind + { 5 1 roll + 4 {4 get 5 1 roll} repeat + 3 index sub 1 index 6 2 roll sub 5 1 roll + sub 4 2 roll mul exch div add + } bind + { 5 1 roll + 4 {5 get 5 1 roll} repeat + 3 index sub 1 index 6 2 roll sub 5 1 roll + sub 4 2 roll mul exch div add + } bind + ] readonly + /RangeLMN [0 0.9505 0 1 0 1.0890] readonly + /MatrixABC + [ 3.24063 -0.96893 0.05571 + -1.53721 1.87576 -0.20402 + -0.49863 0.04152 1.05700 + ] readonly + /EncodeABC [ {0 .max 0.45 exp} bind dup dup] readonly + /WhitePoint [0.9505 1 1.0890] readonly + % Some Genoa tests seem to require the presence of BlackPoint. + /BlackPoint [0 0 0] readonly +.dicttomark setcolorrendering + +%END CRD + +% Initialize a CIEBased color space for sRGB. +/CIEsRGB [ /CIEBasedABC + mark + /DecodeLMN [ { + dup 0.03928 le { 12.92321 div } { 0.055 add 1.055 div 2.4 exp } ifelse + } bind dup dup ] readonly + /MatrixLMN [ + 0.412457 0.212673 0.019334 + 0.357576 0.715152 0.119192 + 0.180437 0.072175 0.950301 + ] readonly + /WhitePoint [0.9505 1.0 1.0890] readonly + .dicttomark readonly +] readonly def + +% ------ Painting ------ % + +% A straightforward definition of execform that doesn't actually +% do any caching. +/.execform1 { + % This is a separate operator so that the stacks will be restored + % properly if an error occurs. + dup /Matrix get concat + dup /BBox get aload pop + exch 3 index sub exch 2 index sub rectclip + dup /PaintProc get + 1 index /Implementation known not { + 1 index dup /Implementation null .forceput readonly pop + } if + exec +} .bind odef % must bind .forceput + +/.formtypes 5 dict + dup 1 /.execform1 load put +def + +/execform { % <form> execform - + gsave { + dup /FormType get //.formtypes exch get exec + } stopped grestore { stop } if +} odef + +/.patterntypes 5 dict + dup 1 /.buildpattern1 load put +def + +/makepattern { % <proto_dict> <matrix> makepattern <pattern> + //.patterntypes 2 index /PatternType get get + .currentglobal false .setglobal exch + % Stack: proto matrix global buildproc + 3 index dup length 1 add dict .copydict + 3 index 3 -1 roll exec 3 -1 roll .setglobal + 1 index /Implementation 3 -1 roll put + readonly exch pop exch pop +} odef + +/setpattern { % [<comp1> ...] <pattern> setpattern - + currentcolorspace 0 get /Pattern ne { + [ /Pattern currentcolorspace ] setcolorspace + } if setcolor +} odef + +% Extend image and imagemask to accept dictionaries. +% We must create .imagetypes and .imagemasktypes outside level2dict, +% and leave some extra space because we're still in Level 1 mode. +systemdict begin +/.imagetypes 5 dict + dup 1 /.image1 load put +def +/.imagemasktypes 5 dict + dup 1 /.imagemask1 load put +def +end + +/.image /image load def +/image { + dup type /dicttype eq { + dup /ImageType get //.imagetypes exch get exec + } { + //.image + } ifelse +} odef +currentdict /.image undef + +/.imagemask /imagemask load def +/imagemask { + dup type /dicttype eq { + dup /ImageType get //.imagemasktypes exch get exec + } { + //.imagemask + } ifelse +} odef +currentdict /.imagemask undef + +end % level2dict |