1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
|
% Copyright (C) 2001-2019 Artifex Software, Inc.
% All Rights Reserved.
%
% This software is provided AS-IS with no warranty, either express or
% implied.
%
% This software is distributed under license and may not be copied,
% modified or distributed except as expressly authorized under the terms
% of the license contained in the file LICENSE in this distribution.
%
% Refer to licensing information at http://www.artifex.com or contact
% Artifex Software, Inc., 1305 Grant Avenue - Suite 200, Novato,
% CA 94945, U.S.A., +1(415)492-9861, for further information.
%
% Initialization file for 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 .argindex {
% 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
% 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 wcheck exch dup xcheck exch % original attributes
dup length array exch dup { % stack: destination_array original_array original_array
dup type /arraytype eq {
dup 2 index ne { % avoid recursion
.copyparam % recurse to handle composite array elements
} {
% this array self referenced, do it again (yuk!)
pop 1 index % get copy of destination array
} ifelse
} {
dup type /stringtype eq {
.copyparam
} if
}
ifelse 3 1 roll % keep arrays on top
} forall pop astore
exch { cvx } if % set executable state
exch not { readonly } if % set readonly attribute as original
exch .setglobal
} if
dup type /stringtype eq {
dup wcheck exch % save attr for setting readonly
.currentglobal //true .setglobal
1 index length string exch .setglobal
copy exch not { readonly } if
} if
} .bind odef
% 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 .argindex 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 /exec load 3 packedarray cvx put
userparams 3 1 roll put
} .bind def
end
/currentuserparams { % - currentuserparams <dict>
/userparams .systemvar dup length dict .copydict
} odef
% We break out setuserparams into a separate procedure so that setvmxxx
% can use it without affecting the command in case of an error.
/.setuserparams2 {
% Check that we will be able to set the PostScript-level
% user parameters.
/setuserparams /psuserparams .systemvar //.checksetparams exec
% 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
% special protection for the security related parameters
[ /PermitFileReading /PermitFileWriting /PermitFileControl ]
{ 2 index eq { % force all strings to readonly but make sure the
% array is in the correct VM space (local/global).
currentglobal exch dup gcheck setglobal
dup length array exch { readonly exch } forall astore
exch setglobal
} if
} forall
% protect top level of parameters that we copied
dup type dup /arraytype eq exch /stringtype eq or { readonly } if
/userparams .systemvar 3 1 roll .forceput % userparams is read-only
} executeonly
{
pop pop
} ifelse
} executeonly 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 executeonly odef % must be bound and hidden for .forceput
/setuserparams { % <dict> setuserparams -
{.setuserparams2} stopped
{/setuserparams load $error /errorname get signalerror} if
} .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 .argindex .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.
dup pop % check # of args
/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 /exec load 3 packedarray cvx
} forall .dicttomark //.checksetparams exec
% 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
% protect top level parameters that we copied
dup type dup /arraytype eq exch /stringtype eq or { readonly } if
//pssystemparams 3 1 roll .forceput % pssystemparams is read-only
} executeonly
{ pop pop
}
ifelse
} executeonly
forall pop
} .bind executeonly 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 .argindex .dicttomark setuserparams pop }
stopped
{ /setcachelimit .systemvar $error /errorname get signalerror
} if
} .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 } stopped {
/setcacheparams .systemvar $error /errorname get signalerror
} if
} .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 0 .definepsuserparam
% File Access Permission parameters
.currentglobal //true .setglobal
/.checkFilePermitparams {
type /arraytype eq {
currentuserparams /LockFilePermissions get {
5 { pop } repeat /setuserparams /invalidaccess signalerror
}{
% in addition to validating the value, ensure the value is read/only
dup { readonly exch } forall
.currentglobal exch dup gcheck .setglobal length array exch .setglobal
astore readonly
}
ifelse
} {
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
dup /CurDisplayList 0 .forceput
dup /CurFormCache 0 .forceput
dup /CurInputDevice () .forceput
dup /CurOutlineCache 0 .forceput
dup /CurOutputDevice () .forceput
dup /CurPatternCache 0 .forceput
dup /CurUPathCache 0 .forceput
dup /CurScreenStorage 0 .forceput
dup /CurSourceList 0 .forceput
dup /DoPrintErrors //false .forceput
dup /JobTimeout 0 .forceput
dup /LicenseID (LN-001) .forceput % bogus
dup /MaxDisplayList 140000 .forceput
dup /MaxFormCache 100000 .forceput
dup /MaxImageBuffer 524288 .forceput
dup /MaxOutlineCache 65000 .forceput
dup /MaxPatternCache 100000 .forceput
dup /MaxUPathCache 300000 .forceput
dup /MaxScreenStorage 84000 .forceput
dup /MaxSourceList 25000 .forceput
dup /PrinterName product .forceput
dup /RamSize 4194304 .forceput
/WaitTimeout 40 .forceput
% 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 exec} put
(%ProcessComment) cvn {
/ProcessComment getuserparam
dup //null eq { pop pop pop } { exec } ifelse
} bind def
/ProcessDSCComment //null .definepsuserparam
psuserparams /ProcessDSCComment {//.checkprocesscomment exec} put
/.loadingfont //false def
(%ProcessDSCComment) cvn {
/ProcessDSCComment getuserparam
dup //null eq .loadingfont or { pop pop pop } { exec } ifelse
} bind def
% ------ Miscellaneous ------ %
(<<) cvn % - << -mark-
/mark load def
% (>> is defined primitively.)
/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 .argindex .dicttomark {.setuserparams2} stopped
{pop /setvmthreshold load $error /errorname get signalerror}
{pop} ifelse
} odef
/vmreclaim { % <int> vmreclaim -
dup 0 gt {
dup 2 le 1 index type /integertype eq and {
pop % ignore user requests for vmreclaim
% (reclaim will still happen controlled by vmthreshold)
}
{ .vmreclaim } % let internal operator handle error conditions
ifelse
} {
% VMReclaim userparam controls enable/disable GC
mark /VMReclaim 2 index .dicttomark {.setuserparams2} stopped
{pop /vmreclaim load $error /errorname get signalerror}
{pop} ifelse
} ifelse
} .bind executeonly odef
-1 setvmthreshold
% ------ IODevices ------ %
/.getdevparams where {
pop /currentdevparams { % <iodevice> currentdevparams <dict>
.getdevparams .dicttomark
} odef
} if
/.putdevparams where {
pop /setdevparams { % <iodevice> <dict> setdevparams -
dup type /dicttype ne { /setdevparams .systemvar /typecheck signalerror } if
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
} {
% Encapsulated job
pop
serverdict /.jobsave save put
serverdict /.jobsavelevel 1 put
.userdict /quit { stop } .bind put % CET 28-10 requires a procedure
} ifelse
% Reset the interpreter state.
clear cleardictstack
initgraphics
//false setglobal
} bind executeonly def
/.startjob { % <exit_bool> <password> <finish_proc>
% .startjob <ok_bool>
vmstatus pop pop serverdict /.jobsavelevel get eq
2 .argindex .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.
1 .argindex type /booleantype ne {
/startjob .systemvar /typecheck signalerror
} if
{ .startnewjob //true } .startjob
} odef
systemdict begin
/quit { % - quit -
//systemdict begin serverdict /.jobsave get //null eq
{ end //quit }
{ /quit .systemvar /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.
% convenience function to make a dictionary from an object and a key
/.pair2dict { 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 //.pair2dict exec setsystemparams } bind def
} if
dup /StartupMode known
{ /dosysstart { /StartupMode getsystemparam 0 ne } bind def
/setdosysstart { { 1 } { 0 } ifelse /StartupMode //.pair2dict exec 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 //.pair2dict exec 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
/setduplexmode { /Duplex //.pair2dict exec setpagedevice } bind def
/setmargins
{ exch 2 array astore /Margins //.pair2dict exec setpagedevice
} bind def
/setpagemargin { 0 2 array astore /PageOffset //.pair2dict exec 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
{ count 1 lt { /setresolution /stackunderflow signalerror } if
dup type dup /integertype eq exch /realtype eq or not
{
/setresolution /typecheck signalerror
} if
dup 2 array astore /HWResolution //.pair2dict exec { setpagedevice } stopped {
pop /setresolution $error /errorname get signalerror
} if
} bind def
%END PAGEDEVICE
% The following are not implemented yet.
%manualfeed
%manualfeedtimeout
%pagecount
%pagestackorder
%setpagestackorder
% -------- ICC manager -------- %
% All color management is going
% through ICC flow. We need
% to have the default device
% spaces gray, RGB and CMYK
% defined by ICC profiles
//systemdict /ICCProfilesDir .knownget {
% Set the directory sepcified by the command line option
mark exch /ICCProfilesDir exch .dicttomark .setuserparams2
} {
% First see if the current value is valid so we don't have to guess
mark .currentuserparams .dicttomark /ICCProfilesDir get
(default_gray.icc) concatstrings {status} //.internalstopped exec
{pop //false} if
{
pop pop pop pop % current value was OK. Just clean up stack
} {
% Search for valid (iccprofiles) directory as a sibling to (Resource)
% and set it as a default if found.
LIBPATH {
(Resource) rsearch {
exch pop exch pop (iccprofiles) concatstrings
.file_name_separator concatstrings
dup (default_gray.icc) concatstrings status {
pop pop pop pop
mark exch /ICCProfilesDir exch .dicttomark .setuserparams2
exit
} {
pop
} ifelse
} {
pop
} ifelse
} forall
} ifelse % if currentuserparams ICCProfilesDir
} ifelse % ICCProfilesDir set in systemdict (command line option)
mark % collect dict key value pairs for anything set in systemdict (command line options)
[ /DefaultRGBProfile /DefaultGrayProfile /DefaultCMYKProfile /DeviceNProfile
/NamedProfile /SourceObjectICC /OverrideICC
]
{ dup //systemdict exch .knownget not {
pop % discard keys not in systemdict
} if
} forall
.dicttomark .setuserparams2
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
currentdict exch /statusdict exch .forceput % 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 ------ %
% gs_res.ps uses these entries in colorspacedict
% to populate the ColorSpaceFamily resource, so we need
% to add the supported spaces.
%
systemdict /colorspacedict get begin
/CIEBasedA [] def
/CIEBasedABC [] def
/DevicePixel [] def
/Indexed [] def
/Pattern [] def
/Separation [] def
end
% ------ CIE color rendering ------ %
% Define findcolorrendering and a default ColorRendering ProcSet.
/findcolorrendering { % <intentname> findcolorrendering
% <crdname> <found>
% Adobe interpreters report /findcolorrendering (literal name), not the
% operator itself, if an error occurs in findcolorrendering.
/findcolorrendering {
/ColorRendering /ProcSet findresource
1 .argindex dup type /nametype eq { .namestring } if (.) concatstrings
1 index /GetPageDeviceName get exec dup type /nametype eq { .namestring } if (.) concatstrings
2 index /GetHalftoneName get exec dup type /nametype eq { .namestring } if
concatstrings concatstrings cvn % stack: intentname procset crdname
dup /ColorRendering resourcestatus {
pop pop exch pop exch pop //true
} {
pop /GetSubstituteCRD get exec //false
} ifelse
} .errorexec
} 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
dup type /integertype ne {
/setcolorrendering .systemvar /typecheck signalerror
} if
//.colorrenderingtypes exch .knownget {
exec
} {
/setcolorrendering .systemvar /rangecheck signalerror
} ifelse
} odef
/.setcolorrendering1 where { pop } { (%END CRD) .skipeof } ifelse
.colorrenderingtypes 1 {
% Adobe ProcSet "Adobe_AGM_Core 2.0 0" places an /Intent key into CRD's
dup /Intent .knownget {
//.renderingintentdict exch .knownget { .setrenderingintent } if
} if
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
% Special type to install
% sRGB ICC profile color space
/CIEsRGBICC [ /ICCBased
mark
/N 3
/DataSource (srgb)
/Alternate [/DeviceRGB]
/Name (srgb)
.dicttomark
] def
% Special type to install
% sGray ICC profile color space
/CIEsGRAYICC [ /ICCBased
mark
/N 1
/DataSource (sgray)
/Alternate [/DeviceGray]
/Name (sgray)
.dicttomark
] def
% Special type to install
% e-sRGB ICC profile color space
/CIEesRGBICC [ /ICCBased
mark
/N 3
/DataSource (esrgb)
/Alternate [/DeviceRGB]
/Name (esrgb)
.dicttomark
] def
% Special type to install
% rommRGB ICC profile color space
/CIErommRGBICC [ /ICCBased
mark
/N 3
/DataSource (rommrgb)
/Alternate [/DeviceRGB]
/Name (rommrgb)
.dicttomark
] 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.
%% High level forms need the CTM before the Form Matrix is applied
/UNROLLFORMS where {/UNROLLFORMS get}{//false}ifelse not
{matrix currentmatrix exch} if
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
} executeonly if
/UNROLLFORMS where {/UNROLLFORMS get}{//false}ifelse not
%% [CTM] <<Form>> PaintProc .beginform -
{
%% First,, check to see if we have no /Implementation already defined (see above)
1 index /Implementation get //null eq
{
%% We don't, so copy the form dictionary
1 index 4 1 roll
%% tell devices we're starting a form, run the PaintProc, and then tell the devices we've finished
3 -1 roll 2 index
.beginform exec
%% This is all horrible code to deal with illegal forms which leave junk on the operand stack
%% Starting from 1 (not 0, we don't want to look at the loop count) and going up to the
%% number of objects on the stack, check each object to see if its the Form dict (it is
%% *supposed* to be the top object after executing the PaintProc). I don't currently check to see if
%% the PaintProc ate the dict, but if there are extra objects, remove them and tell
%% the user.
%%
count 1 1 3 -1 roll {
dup index
dup type /dicttype eq {
/Implementation known {
2 sub 0 1 3 -1 roll {
QUIET not {
(\n WARNING - Form PaintProc left operands on the stack after execution.\n This is technically illegal and these have been removed, \n if output is incorrect run again with -dUNROLLFORMS.\n) =
} if
pop pop
} for
exit
}if
} {
pop pop
}ifelse
} for
.endform
%% Ask devices if they have cached the form, and what ID to use if so
%% returning -1 means 'no ID'
.get_form_id dup -1 eq
{pop pop}
{
%% The form is cached with a specific ID. Make a dictionary (which we'll store in the
%% Form dictioanry using the /Implementation key).
1 dict dup /FormID 4 -1 roll put
1 index exch /Implementation exch .forceput readonly pop
} executeonly
ifelse
}
{
%% We have a (non-null) Implementation, get the dictionary and pull the
%% FormID key from it, then tell the device to use the stored form with the
%% specified key.
pop dup /Implementation get /FormID get .repeatform
}ifelse
}
{exec} ifelse
} .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>
dup type /dicttype eq {
% "<dict> makepattern" reports /typecheck on Adobe
/makepattern .systemvar /typecheck signalerror
} if
//.patterntypes 2 .argindex /PatternType get .knownget not {
/makepattern .systemvar /rangecheck signalerror
} if
.currentglobal //false .setglobal exch
% Stack: proto matrix global buildproc
3 index dup length 1 add dict .copydict
% Stack: proto matrix global buildproc newdict
3 index 3 -1 roll exec
% Stack: proto matrix global newdict instance
% Create an 'Implementation' entry for the pattern dict. The PRLM 3rd says
% this about the contents of Implementation: "The type and value of this
% entry are implementation-dependent." The CET (page 2 of 18-02f) expects
% that this entry be an array and that the second element of the array be a
% gstate. We put our pattern instance struct into the first element of the
% array.
1 index /Implementation 3 -1 roll
.getCPSImode { gstate } { //null } ifelse 2 array astore
put % put Implementation into the pattern dict.
% Stack: proto matrix global newdict
readonly exch .setglobal exch pop exch pop
} odef
/setpattern { % [<comp1> ...] <pattern> setpattern -
{ currentcolorspace 0 get /Pattern ne {
[ /Pattern currentcolorspace ] setcolorspace
} if setcolor
} stopped {
/setpattern .systemvar $error /errorname get signalerror
} if
} 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 "operators" 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.
% Also we add a findrgbcustomcolor that was discovered in Adobe Illustrator
% AI5 (Adobe Illustrator (R) Version 7.0 Full Prolog) ProcSet that allows
% us to create Separation colorspace with a /DeviceRGB tint transform.
% 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 executeonly def
% The following isn't documented by Adobe, but was found in Adobe Illustrator (R)
% Version 7.0 Full Prolog
/findrgbcustomcolor { 4 array astore } bind executeonly def
% Build a tint transform function for use by setcustomcolor. This function
% is for a Separation color space which has either a DeviceCMYK base color space
% (i.e. 1 input and 4 outputs) or a DeviceRGB colorspace (1 in, 3 out).
% The input to buildcustomtinttransform is the array created by findcmykcustomcolor
% and the length of the array is used to determine the alternate colorspace.
% The resulting function for CMYK 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.
% For RGB, since the resulting function is:
% { dup red mul exch dup green mul exch blue mul }
/buildcustomtinttransform % <array> buildcustomtinttransform <function>
{
dup length 5 eq {
% CMYK
[ /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
]
} {
% RGB is assumed
[ /dup load 2 index 0 get /mul load
/exch load /dup load 6 index 1 get /mul load
/exch load 9 index 2 get /mul load
]
} ifelse
cvx bind exch pop % Make executable and remove the input array
} bind executeonly def
% Construct the colorspace array to be used by setcolorspace from the array
% result of either findcmykcustomcolor or findrgbcustomcolor.
/buildcolorspacearray % <array> buildcustomtinttransform <colorspace_array>
{ % as with buildcustomtinttransform, the length of the array is used to
% determine the alternate colorspace
dup length 5 eq {
% Start building Separation colorspace with CMYK alternate
[ /Separation 2 index 4 get % Get separation name from array's key
/DeviceCMYK
4 index //buildcustomtinttransform exec % build the tint transform function
]
} {
[ /Separation 2 index 3 get % Get separation name from array's key
/DeviceRGB
4 index //buildcustomtinttransform exec % build the tint transform function
]
} ifelse
exch pop % remove the input array
} bind executeonly 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 eq {
pop pop
}{
% Check that the tint is a number between 0 and 1
dup type dup /integertype eq exch /realtype eq or not {
/setcustomcolor /typecheck cvx signalerror
} if
dup 1 le not {
/setcustomcolor /rangecheck cvx signalerror
} if
dup 0 ge not {
/setcustomcolor /rangecheck cvx signalerror
} if
% The array is supposed to be the result of fundcmykcustomcolor. Our
% implementation just pushes all the arguments into the array and that's
% what buildcolorspacearray expects. So check that now.
% Starting with the first N-1 elemenst which must be numbers where 0 <= x <= 1
1 index
0 1 2 index length 2 sub
{
1 index exch get dup
type dup /integertype eq exch /realtype eq or not {
/setcustomcolor /typecheck cvx signalerror
} if
dup
1 le not {
/setcustomcolor /rangecheck cvx signalerror
} if
0 ge not {
/setcustomcolor /rangecheck cvx signalerror
} if
} for
% Finally, check the last element of the array, which must be a string.
dup length 1 sub get type /stringtype eq not {
/setcustomcolor /typecheck cvx signalerror
} if
exch //buildcolorspacearray exec
setcolorspace % Set the Separation color space as current
setcolor % Set the tint as the current color
} ifelse
} bind executeonly 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
/separation_all [/Separation /All /DeviceCMYK { dup dup dup } bind ] readonly def
% Collect the arguments into the image dictionary
% <width> <height> <bits/sample> <matrix> <proc> args2dict <dict>
/args2dict {
10 dict begin
{1 0} 1
{ /ImageType /Decode /DataSource /ImageMatrix /BitsPerComponent /Height /Width
} { exch def } forall
currentdict end
} bind def
% Prints (1-gray) on all separations.
% <gray> setseparationgray -
/setseparationgray {
//separation_all setcolorspace
1 exch sub setcolor
} bind def
% Renders an image whose sample values specify the amount of the custom color.
% <width> <height> <bits/sample> <matrix> <proc> <array> customcolorimage -
/customcolorimage {
gsave
//buildcolorspacearray exec setcolorspace
//args2dict exec image
grestore
} bind def
% Renders an image on all process and custom color plates.
% <width> <height> <bits/sample> <matrix> <proc>
/separationimage {
gsave
//separation_all setcolorspace
//args2dict exec image
grestore
} bind def
{ /buildcustomtinttransform /buildcolorspacearray /separation_all /args2dict }
{ currentdict exch undef } forall
%END TN 5044 psuedo-ops
end % level2dict
% undefine things defined in this file and not referenced elsewhere
[
/.checkprocesscomment
/.pair2dict
/.setcolorrendering1
/.checkparamtype
/.checksetparams
] dup level2dict .undefinternalnames
systemdict .undefinternalnames
|