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-% 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