923 lines
31 KiB
PostScript
923 lines
31 KiB
PostScript
% Copyright (C) 1990, 2000 Aladdin Enterprises. All rights reserved.
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%
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% This software is provided AS-IS with no warranty, either express or
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% implied.
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%
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% This software is distributed under license and may not be copied,
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% modified or distributed except as expressly authorized under the terms
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% of the license contained in the file LICENSE in this distribution.
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%
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% For more information about licensing, please refer to
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% http://www.ghostscript.com/licensing/. For information on
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% commercial licensing, go to http://www.artifex.com/licensing/ or
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% contact Artifex Software, Inc., 101 Lucas Valley Road #110,
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% San Rafael, CA 94903, U.S.A., +1(415)492-9861.
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% $Id: gs_lev2.ps,v 1.38 2005/10/04 17:51:52 ray Exp $
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% Initialization file for Level 2 functions.
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% When this is run, systemdict is still writable,
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% but (almost) everything defined here goes into level2dict.
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level2dict begin
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% ------ System and user parameters ------ %
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% User parameters must obey save/restore, and must also be maintained
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% per-context. We implement the former, and some of the latter, here
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% with PostScript code. NOTE: our implementation assumes that user
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% parameters change only as a result of setuserparams -- that there are
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% no user parameters that are ever changed dynamically by the interpreter
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% (although the interpreter may adjust the value presented to setuserparams)
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%
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% There are two types of user parameters: those which are actually
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% maintained in the interpreter, and those which exist only at the
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% PostScript level. We maintain the current state of both types in
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% a read-only local dictionary named userparams, defined in systemdict.
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% In a multi-context system, each context has its own copy of this
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% dictionary. In addition, there is a constant dictionary named
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% psuserparams where each key is the name of a user parameter that exists
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% only in PostScript and the value is a procedure to check that the value
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% is legal: setuserparams uses this for checking the values.
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% setuserparams updates userparams explicitly, in addition to setting
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% any user parameters in the interpreter; thus we can use userparams
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% to reset those parameters after a restore or a context switch.
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% NOTE: the name userparams is known to the interpreter, and in fact
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% the interpreter creates the userparams dictionary.
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% Check parameters that are managed at the PostScript level.
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/.checkparamtype { % <newvalue> <type> .checkparamtype <bool>
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exch type eq
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} .bind def
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/.checksetparams { % <newdict> <opname> <checkdict>
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% .checksetparams <newdict>
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2 index {
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% Stack: newdict opname checkdict key newvalue
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3 copy 3 1 roll .knownget {
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exec not {
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pop pop pop load /typecheck signalerror
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} if
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dup type /stringtype eq {
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dup rcheck not {
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pop pop pop load /invalidaccess signalerror
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} if
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} if
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} {
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pop
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} ifelse pop pop
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} forall pop pop
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} .bind def % not odef, shouldn't reset stacks
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% currentuser/systemparams creates and returns a dictionary in the
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% current VM. The easiest way to make this work is to copy any composite
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% PostScript-level parameters to global VM. Currently we have strings
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% as well as arrays. For arrays, we also need to copy any contents that
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% are in VM. Also copying string parameters insures the contents won't
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% be changed. Also be careful to preserve 'executable' state.
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/.copyparam { % <value> .copyparam <value'>
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dup type /arraytype eq {
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.currentglobal true .setglobal exch
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dup wcheck exch dup xcheck exch % original attributes
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dup length array exch dup { % stack: destination_array original_array original_array
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dup type /arraytype eq {
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dup 2 index ne { % avoid recursion
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.copyparam % recurse to handle composite array elements
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} {
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% this array self referenced, do it again (yuk!)
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pop 1 index % get copy of destination array
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} ifelse
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} {
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dup type /stringtype eq {
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.copyparam
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} if
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}
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ifelse 3 1 roll % keep arrays on top
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} forall pop astore
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exch { cvx } if % set executable state
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exch not { readonly } if % set readonly attribute as original
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exch .setglobal
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} if
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dup type /stringtype eq {
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dup wcheck exch % save attr for setting readonly
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.currentglobal true .setglobal
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1 index length string exch .setglobal
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copy exch not { readonly } if
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} if
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} .bind def
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% Some user parameters are managed entirely at the PostScript level.
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% We take care of that here.
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systemdict begin
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/psuserparams 48 dict def
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/getuserparam { % <name> getuserparam <value>
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/userparams .systemvar 1 index get exch pop
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} odef
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% Fill in userparams (created by the interpreter) with current values.
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mark .currentuserparams
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counttomark 2 idiv {
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userparams 3 1 roll put
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} repeat pop
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/.definepsuserparam { % <name> <value> .definepsuserparam -
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psuserparams 3 copy pop
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type cvlit /.checkparamtype cvx 2 packedarray cvx put
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userparams 3 1 roll put
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} .bind def
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end
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/currentuserparams { % - currentuserparams <dict>
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/userparams .systemvar dup length dict .copydict
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} odef
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/setuserparams { % <dict> setuserparams -
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% Check that we will be able to set the PostScript-level
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% user parameters.
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/setuserparams /psuserparams .systemvar .checksetparams
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% Set the C-level user params. If this succeeds, we know that
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% the password check succeeded.
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dup .setuserparams
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% Now set the PostScript-level params.
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% The interpreter may have adjusted the values of some of the
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% parameters, so we have to read them back.
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dup {
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/userparams .systemvar 2 index known {
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psuserparams 2 index known not {
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pop dup .getuserparam
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} if
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.copyparam
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% special protection for the security related parameters
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[ /PermitFileReading /PermitFileWriting /PermitFileControl ]
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{ 2 index eq { % force all strings to readonly but make sure the
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% array is in the correct VM space (local/global).
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currentglobal exch dup gcheck setglobal
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dup length array exch { readonly exch } forall astore
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exch setglobal
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} if
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} forall
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% protect top level of parameters that we copied
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dup type dup /arraytype eq exch /stringtype eq or { readonly } if
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/userparams .systemvar 3 1 roll .forceput % userparams is read-only
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} {
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pop pop
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} ifelse
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} forall
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% A context switch might have occurred during the above loop,
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% causing the interpreter-level parameters to be reset.
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% Set them again to the new values. From here on, we are safe,
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% since a context switch will consult userparams.
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.setuserparams
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} .bind odef
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% Initialize user parameters managed here.
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/JobName () .definepsuserparam
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% Restore must restore the user parameters.
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% (Since userparams is in local VM, save takes care of saving them.)
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/restore { % <save> restore -
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//restore /userparams .systemvar .setuserparams
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} .bind odef
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% The pssystemparams dictionary holds some system parameters that
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% are managed entirely at the PostScript level.
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systemdict begin
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currentdict /pssystemparams known not {
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/pssystemparams 40 dict readonly def
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} if
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/getsystemparam { % <name> getsystemparam <value>
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//pssystemparams 1 index .knownget { exch pop } { .getsystemparam } ifelse
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} odef
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end
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/currentsystemparams { % - currentsystemparams <dict>
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mark .currentsystemparams //pssystemparams { } forall .dicttomark
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} odef
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/setsystemparams { % <dict> setsystemparams -
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% Check that we will be able to set the PostScript-level
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% system parameters.
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/SAFETY .systemvar /safe get {
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% SAFER mode disallows some changes
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[ /GenericResourceDir /FontResourceDir /GenericResourcePathSep ] {
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2 copy .knownget {
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exch //pssystemparams exch .knownget {
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ne { /setsystemparams /invalidaccess signalerror } if
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} {
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pop
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} ifelse
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} {
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pop
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} ifelse
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} forall
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} if
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/setsystemparams //pssystemparams mark exch {
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type cvlit /.checkparamtype cvx 2 packedarray cvx
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} forall .dicttomark .checksetparams
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% Set the C-level system params. If this succeeds, we know that
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% the password check succeeded.
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dup .setsystemparams
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% Now set the PostScript-level params. We must copy local strings
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% into global VM.
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dup
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{ //pssystemparams 2 index known
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{ % Stack: key newvalue
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.copyparam
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% protect top level parameters that we copied
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dup type dup /arraytype eq exch /stringtype eq or { readonly } if
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//pssystemparams 3 1 roll .forceput % pssystemparams is read-only
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}
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{ pop pop
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}
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ifelse
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}
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forall pop
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} .bind odef
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% Initialize the passwords.
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% NOTE: the names StartJobPassword and SystemParamsPassword are known to
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% the interpreter, and must be bound to noaccess strings.
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% The length of these strings must be max_password (iutil2.h) + 1.
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/StartJobPassword 65 string noaccess def
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/SystemParamsPassword 65 string noaccess def
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% Redefine cache parameter setting to interact properly with userparams.
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/setcachelimit {
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mark /MaxFontItem 2 index .dicttomark setuserparams pop
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} .bind odef
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/setcacheparams {
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% The MaxFontCache parameter is a system parameter, which we might
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% not be able to set. Fortunately, this doesn't matter, because
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% system parameters don't have to be synchronized between this code
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% and the VM.
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counttomark 1 add copy setcacheparams
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currentcacheparams % mark size lower upper
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3 -1 roll pop
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/MinFontCompress 3 1 roll
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/MaxFontItem exch
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.dicttomark setuserparams
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cleartomark
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} .bind odef
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% Add bogus user and system parameters to satisfy badly written PostScript
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% programs that incorrectly assume the existence of all the parameters
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% listed in Appendix C of the Red Book. Note that some of these may become
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% real parameters later: code near the end of gs_init.ps takes care of
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% removing any such parameters from ps{user,system}params.
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% psuserparams
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/MaxFormItem 100000 .definepsuserparam
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/MaxPatternItem 20000 .definepsuserparam
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/MaxScreenItem 48000 .definepsuserparam
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/MaxUPathItem 5000 .definepsuserparam
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% File Access Permission parameters
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.currentglobal true .setglobal
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/.checkFilePermitparams {
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type /arraytype eq {
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currentuserparams /LockFilePermissions get {
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5 { pop } repeat /setuserparams /invalidaccess signalerror
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}{
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% in addition to validating the value, ensure the value is read/only
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dup { readonly exch } forall
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.currentglobal exch dup gcheck .setglobal length array exch .setglobal
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astore readonly
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}
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ifelse
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} {
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5 { pop } repeat /setuserparams /typecheck signalerror
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}
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ifelse
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true
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} .bind def
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% Initialize the File Permission access control to wide open
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% These will only be accessed via current/set userparams.
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% Values are a string containing multiple nul terminated path strings
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/PermitFileReading dup [ (*) ] .definepsuserparam
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psuserparams exch /.checkFilePermitparams load put
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/PermitFileWriting dup [ (*) ] .definepsuserparam
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psuserparams exch /.checkFilePermitparams load put
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/PermitFileControl dup [ (*) ] .definepsuserparam
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psuserparams exch /.checkFilePermitparams load put
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.setglobal
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pssystemparams begin
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/CurDisplayList 0 .forcedef
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/CurFormCache 0 .forcedef
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/CurOutlineCache 0 .forcedef
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/CurPatternCache 0 .forcedef
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/CurUPathCache 0 .forcedef
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/CurScreenStorage 0 .forcedef
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/CurSourceList 0 .forcedef
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/DoPrintErrors false .forcedef
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/MaxDisplayList 140000 .forcedef
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/MaxFormCache 100000 .forcedef
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/MaxOutlineCache 65000 .forcedef
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/MaxPatternCache 100000 .forcedef
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/MaxUPathCache 300000 .forcedef
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/MaxScreenStorage 84000 .forcedef
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/MaxSourceList 25000 .forcedef
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/RamSize 4194304 .forcedef
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end
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% Define the procedures for handling comment scanning. The names
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% %ProcessComment and %ProcessDSCComment are known to the interpreter.
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% These procedures take the file and comment string and file as operands.
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/.checkprocesscomment {
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dup null eq {
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pop true
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} {
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dup xcheck {
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type dup /arraytype eq exch /packedarraytype eq or
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} {
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pop false
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} ifelse
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} ifelse
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} .bind def
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/ProcessComment null .definepsuserparam
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psuserparams /ProcessComment {.checkprocesscomment} put
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(%ProcessComment) cvn {
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/ProcessComment getuserparam
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dup null eq { pop pop pop } { exec } ifelse
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} bind def
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/ProcessDSCComment null .definepsuserparam
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psuserparams /ProcessDSCComment {.checkprocesscomment} put
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/.loadingfont false def
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(%ProcessDSCComment) cvn {
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/ProcessDSCComment getuserparam
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dup null eq .loadingfont or { pop pop pop } { exec } ifelse
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} bind def
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% ------ Miscellaneous ------ %
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(<<) cvn % - << -mark-
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/mark load def
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(>>) cvn % -mark- <key1> <value1> ... >> <dict>
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/.dicttomark load def
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/languagelevel 2 def
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% When running in Level 2 mode, this interpreter is supposed to be
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% compatible with Adobe version 2017.
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/version (2017) readonly def
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% If binary tokens are supported by this interpreter,
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% set an appropriate default binary object format.
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/setobjectformat where
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{ pop
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/RealFormat getsystemparam (IEEE) eq { 1 } { 3 } ifelse
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/ByteOrder getsystemparam { 1 add } if
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setobjectformat
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} if
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% Aldus Freehand versions 2.x check for the presence of the
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% setcolor operator, and if it is missing, substitute a procedure.
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% Unfortunately, the procedure takes different parameters from
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% the operator. As a result, files produced by this application
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% cause an error if the setcolor operator is actually defined
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% and 'bind' is ever used. Aldus fixed this bug in Freehand 3.0,
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% but there are a lot of files created by the older versions
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% still floating around. Therefore, at Adobe's suggestion,
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% we implement the following dreadful hack in the 'where' operator:
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% If the key is /setcolor, and
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% there is a dictionary named FreeHandDict, and
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% currentdict is that dictionary,
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% then "where" consults only that dictionary and not any other
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% dictionaries on the dictionary stack.
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.wheredict /setcolor {
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/FreeHandDict .where {
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/FreeHandDict get currentdict eq {
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pop currentdict /setcolor known { currentdict true } { false } ifelse
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||
} {
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.where
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} ifelse
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||
} {
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.where
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} ifelse
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} bind put
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||
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% ------ Virtual memory ------ %
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||
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/currentglobal % - currentglobal <bool>
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||
/currentshared load def
|
||
/gcheck % <obj> gcheck <bool>
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||
/scheck load def
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/setglobal % <bool> setglobal -
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/setshared load def
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||
% We can make the global dictionaries very small, because they auto-expand.
|
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/globaldict currentdict /shareddict .knownget not { 4 dict } if def
|
||
/GlobalFontDirectory SharedFontDirectory def
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||
|
||
% VMReclaim and VMThreshold are user parameters.
|
||
/setvmthreshold { % <int> setvmthreshold -
|
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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 ------ %
|
||
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||
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
|
||
.userdict /quit /stop load put
|
||
} ifelse
|
||
% Reset the interpreter state.
|
||
clear cleardictstack
|
||
initgraphics
|
||
false setglobal
|
||
2 vmreclaim % Make sure GC'ed memory is reclaimed and freed.
|
||
} 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.
|
||
{ .startnewjob true } .startjob
|
||
} odef
|
||
|
||
% The procedure to undo the job encapsulation
|
||
/.endjob {
|
||
clear cleardictstack
|
||
serverdict /.jobsave get dup null eq { pop } { restore } ifelse
|
||
serverdict /.jobsave null put
|
||
2 vmreclaim % recover local and global VM
|
||
} 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
|
||
% Also define /buildtime in systemdict because Adobe does so and some fonts use it as ID
|
||
systemdict /buildtime dup load put
|
||
/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 { % <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 /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 /Writeable 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 ------ %
|
||
|
||
% Move setcolorsapce, setcolor, and colorspacedict to level2dict
|
||
level2dict /setcolorspace .cspace_util 1 index get put
|
||
level2dict /setcolor .cspace_util 1 index get put
|
||
level2dict /colorspacedict .cspace_util 1 index get put
|
||
|
||
% Add the level 2 color spaces
|
||
% DevicePixel is actually a LanguageLevel 3 feature; it is here for
|
||
% historical reasons.
|
||
%% Replace 1 (gs_devpxl.ps)
|
||
(gs_devpxl.ps) runlibfile
|
||
|
||
%% Replace 1 (gs_ciecs2.ps)
|
||
(gs_ciecs2.ps) runlibfile
|
||
|
||
%% Replace 1 (gs_indxd.ps)
|
||
(gs_indxd.ps) runlibfile
|
||
|
||
%% Replace 1 (gs_sepr.ps)
|
||
(gs_sepr.ps) runlibfile
|
||
|
||
%% Replace 1 (gs_patrn.ps)
|
||
(gs_patrn.ps) runlibfile
|
||
|
||
|
||
|
||
% ------ 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
|
||
|
||
% sRGB output CRD, D65 white point
|
||
mark
|
||
/ColorRenderingType 1
|
||
/RangePQR [ -0.5 2 -0.5 2 -0.5 2 ] readonly
|
||
|
||
% Bradford Cone Space
|
||
/MatrixPQR [ 0.8951 -0.7502 0.0389
|
||
0.2664 1.7135 -0.0685
|
||
-0.1614 0.0367 1.0296] readonly
|
||
|
||
/MatrixLMN [ 3.240449 -0.969265 0.055643
|
||
-1.537136 1.876011 -0.204026
|
||
-0.498531 0.041556 1.057229 ] readonly
|
||
|
||
% Inverse sRGB gamma transform
|
||
/EncodeABC [ { dup 0.00304 le
|
||
{ 12.92321 mul }
|
||
{ 1 2.4 div exp 1.055 mul 0.055 sub }
|
||
ifelse
|
||
} bind dup dup
|
||
] readonly
|
||
|
||
/WhitePoint [ 0.9505 1 1.0890 ] readonly % D65
|
||
/BlackPoint [ 0 0 0 ] readonly
|
||
|
||
% VonKries-like transform in Bradford Cone Space
|
||
/TransformPQR
|
||
% The implementations have been moved to C for performance.
|
||
[ { .TransformPQR_scale_WB0 } bind
|
||
{ .TransformPQR_scale_WB1 } bind
|
||
{ .TransformPQR_scale_WB2 } bind
|
||
] 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
|
||
|
||
% The following functions emulate the actions of findcmykcustomcolor and
|
||
% setcustomcolor. These functions are described in Adobe's TN 5044. That
|
||
% same document also says "The following <20>operators<72> are not defined in the
|
||
% PostScript Language Reference Manual, but should be used as pseudo-operators
|
||
% in your PostScript language output. Separation applications from Adobe
|
||
% Systems and other vendors will redefine these convention operators to
|
||
% separate your documents. Your application should conditionally define
|
||
% procedures with these special names, as shown later in this document."
|
||
%
|
||
% We are providing these functions because we have found files created by
|
||
% "QuarkXPress: pictwpstops filter 1.0" which produce bad shading dictionaries
|
||
% if these operators are not defined.
|
||
|
||
% Conditionally disable the TN 5044 psuedo-ops if NO_TN5044 specified
|
||
/NO_TN5044 where { pop (%END TN 5044 psuedo-ops) .skipeof } if
|
||
|
||
% TN 5044 does not define the contents of the array. We are simply putting
|
||
% the values given into an array. This is consistent with what we see when
|
||
% testing with Adobe Distiller 6.0.
|
||
% <cyan> <magenta> <yellow> <black> <key> findcmykcustomcolor <array>
|
||
/findcmykcustomcolor { 5 array astore } bind def
|
||
|
||
% Build a tint transform function for use by setcustomcolor. This function
|
||
% is for a Separation color space which has a DeviceCMYK base color space
|
||
% (i.e. 1 input and 4 outputs). The input to buildcustomtinttransform is the
|
||
% array created by findcmykcustomcolor. The resulting function is:
|
||
% { dup cyan mul exch dup magenta mul exch dup yellow mul exch black mul }
|
||
% Where cyan, magenta, yellow, and black are values from the array.
|
||
/buildcustomtinttransform % <array> buildcustomtinttransform <function>
|
||
{ [ /dup load 2 index 0 get /mul load
|
||
/exch load /dup load 6 index 1 get /mul load
|
||
/exch load /dup load 10 index 2 get /mul load
|
||
/exch load 13 index 3 get /mul load
|
||
] cvx bind
|
||
exch pop % Remove the input array
|
||
} bind def
|
||
|
||
% Set a custom color based upon a tint and array which describes the custom
|
||
% color. See findcmykcustomcolor. First we create and then set a Separation
|
||
% colorspace. Then we set the specified color.
|
||
% Note that older Adobe ProcSets apparently allow for 'null' as the tint
|
||
% for some reason, so an alternate operational mode is tolerated:
|
||
% null setcustomcolor -
|
||
/setcustomcolor % <array> <tint> setcustomcolor -
|
||
{ dup //null ne {
|
||
% Start building Separation colorspace
|
||
[ /Separation 3 index 4 get % Get separation name from array's key
|
||
/DeviceCMYK
|
||
5 index buildcustomtinttransform ] % build the tint transform function
|
||
setcolorspace % Set the Separation color space as current
|
||
setcolor % Set the tint as the current color
|
||
pop % Remove the input array
|
||
}
|
||
{ pop } % 'null' as the tint is ignored
|
||
ifelse
|
||
} bind def
|
||
|
||
% This proc is supposed to implement a version of overprinting. TN 5044 says
|
||
% that this proc is not used by any shipping host-based application. We have
|
||
% only found it being used in a proc set in files by Canvas from Deneba Systems.
|
||
% Even their proc set does not actually do any overprinting. However their
|
||
% files crash if this is not defined. Thus we have a copy of this proc but
|
||
% we are simply checking for inputs being -1 and if so then we set the value
|
||
% to 0.
|
||
/setcmykoverprint {
|
||
4 { dup -1 eq { pop 0 } if 4 1 roll } repeat setcmykcolor
|
||
} bind def
|
||
|
||
%END TN 5044 psuedo-ops
|
||
|
||
end % level2dict
|