/usr/share/ghostscript/9.22/Resource/Init/gs_ll3.ps is in libgs9-common 9.22~dfsg+1-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | % Copyright (C) 2001-2012 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., 7 Mt. Lassen Drive - Suite A-134, San Rafael,
% CA 94903, U.S.A., +1(415)492-9861, for further information.
%
% Initialization file for PostScript LanguageLevel 3 functions.
% This file must be loaded after gs_lev2.ps and gs_res.ps.
% These definitions go into ll3dict or various ProcSets.
% NOTE: the interpreter creates ll3dict.
ll3dict begin
% We need LanguageLevel 2 or higher in order to have setuserparams and
% defineresource.
languagelevel dup 2 .max .setlanguagelevel
% ------ Idiom recognition ------ %
/IdiomRecognition //false .definepsuserparam
% Modify `bind' to apply idiom recognition afterwards.
/.bindscratch 128 string def
% Note that since this definition of `bind' may get bound in,
% it has to function properly even at lower language levels,
% where IdiomRecognition may not be defined.
/.bind_ { % <proc> .bind <proc'>
//.bind currentuserparams /IdiomRecognition
.knownget not { //false } if {
(*) {
/IdiomSet findresource
//false exch {
% Stack: proc //false dummykey [template substitute]
exch pop dup 1 get exch 0 get
% Stack: proc //false substitute template
3 index .eqproc {
2 index gcheck 1 index gcheck not and {
pop
} {
3 -1 roll pop exch not exit
} ifelse
} {
pop
} ifelse
} forall { exit } if
} //.bindscratch /IdiomSet resourceforall
} if
} def
/.bind /.bind_ load odef % note that .bind_ will get bound
currentdict /.bindscratch .undef
DELAYBIND not {
% We can't just do
% /bind /.bind load def
% because then /bind load == prints --.bind-- .
/bind {//.bind_ exec} odef
} if
currentdict /.bind_ undef
% ------ HalftoneTypes 6, 10, 16 and HalftoneMode ------ %
% This code depends on an internal HalftoneType 7 with the following keys:
% Width, Height, Width2, Height2, TransferFunction:
% as for HalftoneType 16.
% Thresholds: a string or bytestring holding the thresholds,
% (Width x Height + Width2 x Height2) x BitsPerSample / 8 bytes,
% as for HalftoneType 16 except that the samples may be either
% 8 or 16 bits wide.
% BitsPerSample: 8 or 16.
% Note that this HalftoneType never appears in halftone dictionaries given
% to sethalftone, only as a component in those given to .sethalftone5,
% so its numeric value can be chosen ad lib as long as it differs from the
% other values that are legal in component dictionaries for .sethalftone5
% (currently only 1 and 3).
/.makehalftone7 { % <dict> <dict> <source> <Width> <Height>
% (<Width2> <Height2> | null) <BPS> .makehalftone7
% <setdict> <dict5> { .sethalftone5 }
8 dict begin
/HalftoneType 7 def
/BitsPerSample exch def
dup //null eq {
pop 0
} {
/Height2 1 index def /Width2 2 index def mul
} ifelse 3 1 roll
/Height 1 index def
/Width 2 index def
mul add BitsPerSample 8 idiv mul .bigstring
% Stack: dict dict source str
dup type /stringtype eq { readstring } { .readbytestring } ifelse
not { /sethalftone .systemvar /rangecheck signalerror exit } if
readonly /Thresholds exch def
/TransferFunction .knownget { /TransferFunction exch def } if
% If the original Thresholds was a file, replace it with
% a new one.
dup /Thresholds get type /filetype eq {
dup /Thresholds [ Thresholds ] cvx 0 () .subfiledecode put
} if
mark /HalftoneType 5 /Default currentdict end .dicttomark
{ .sethalftone5 }
} bind def
/.bigstring { % <size> .bigstring <string|bytestring>
dup 65400 gt { .bytestring } { string } ifelse
} bind def
/.readbytestring { % <source> <bytestring> .readbytestring
% <bytestring> <filled>
% Note that since bytestrings don't implement getinterval,
% if filled is false, there is no way to tell how much
% was read.
//true exch 0 1 2 index length 1 sub {
% Stack: source true str index
3 index read not { pop exch not exch exit } if
3 copy put pop pop
} for 3 -1 roll pop exch
} bind def
/.sethalftone6 { % <dict> <dict> .sethalftone6 <setdict> <dict5>
% { .sethalftone5 }
% Keys: Width, Height, Thresholds, T'Function
dup /Thresholds get
1 index /Width get 2 index /Height get
//null 8 .makehalftone7
} bind def
/.sethalftone10 { % <dict> <dict> .sethalftone10 <setdict> <dict5>
% { .sethalftone5 }
% Keys: Xsquare, Ysquare, Thresholds, T'Function
% Note that this is the only one of these three HalftoneTypes
% that allows either a file or a string for Thresholds.
dup /Thresholds get dup type /stringtype eq { 0 () .subfiledecode } if
1 index /Xsquare get dup 3 index /Ysquare get dup
8 .makehalftone7
} bind def
/.sethalftone16 { % <dict> <dict> .sethalftone16 <setdict> <dict5>
% { .sethalftone5 }
% Keys: Width, Height, Width2, Height2,
% Thresholds, T'Function
dup /Thresholds get
1 index /Width get 2 index /Height get
3 index /Width2 .knownget { % 2-rectangle case
4 index /Height2 get
} { % 1-rectangle case
//null
} ifelse 16 .makehalftone7
} bind def
.halftonetypes begin
6 /.sethalftone6 load def
10 /.sethalftone10 load def
16 /.sethalftone16 load def
end
% Redefine the halftone-setting operators to honor HalftoneMode.
/setcolorscreen {
/HalftoneMode getuserparam 0 eq {
//setcolorscreen
} {
12 { pop } repeat .getdefaulthalftone
{ //sethalftone }
{ .setdefaulthalftone }
ifelse
} ifelse
} odef
/setscreen {
/HalftoneMode getuserparam 0 eq {
//setscreen
} {
pop pop pop .getdefaulthalftone
{ //sethalftone }
{ .setdefaulthalftone }
ifelse
} ifelse
} odef
/sethalftone {
/HalftoneMode getuserparam 0 eq {
//sethalftone
} {
gsave //sethalftone grestore
.getdefaulthalftone
{ //sethalftone }
{ .setdefaulthalftone }
ifelse
} ifelse
} odef
% ------ ImageTypes 3 and 4 (masked images) ------ %
% Put the new data source in the requested dictionary.
% Copy the updated dictionary because it nay be used elsewhere.
% <dict> <data> <name> update_image3 <dict'>
/update_image3 {
3 -1 roll dup length dict copy dup % [data] /name <<image>> <<image>>
2 index get % [data] /name <<image>> <<sub-image>>
dup length dict copy dup % [data] /name <<image>> <<sub-image>> <<sub-image>>
/DataSource 6 -1 roll put % /name <<image>> <<sub-image>>
exch dup % /name <<sub-image>> <<image>> <<image>>
4 2 roll % <<image>> <<image>> /name <<sub-image>>
put % <<image>>
} bind def
% Copy mask data source to a reusable stream
% <dict> <source> buffer_mask <dict> <file>
/buffer_mask {
1 index /MaskDict get
dup /Width get
1 index /BitsPerComponent get mul 7 add 8 idiv
exch /Height get mul () /SubFileDecode filter
/ReusableStreamDecode filter
} bind def
% Data type vs. mask type decission table.
% All procedures have the signature:
% <image dict> <data DataSource> <mask DataSource> proc <image dict'>
/data_mask_dict mark
/stringtype mark % data is a string
/stringtype { pop pop } bind
/arraytype { % convert data to proc, don't buffer mask
pop
dup type dup /arraytype eq exch /packedarraytype eq or {
[ exch { 1 array astore cvx } forall ]
} {
1 array astore cvx
} ifelse
/DataDict //update_image3 exec
} bind
/packedarraytype 1 index
/filetype { % convert data to file, don't buffer mask
pop
dup type dup /arraytype eq exch /packedarraytype eq or {
[ exch { 1 array astore cvx 0 () /SubFileDecode filter } forall ]
} {
1 array astore cvx 0 () /SubFileDecode filter
} ifelse
/DataDict //update_image3 exec
} bind
.dicttomark readonly
/arraytype mark % data is a proc
/stringtype { % convert mask to proc
exch pop
1 array astore cvx
/MaskDict //update_image3 exec
} bind
/arraytype { % buffer mask in reusable stream and convert back to proc
exch pop
//buffer_mask exec
500 string
{ readstring pop } aload pop
4 packedarray cvx
/MaskDict //update_image3 exec
} bind
/packedarraytype 1 index
/filetype 1 index
.dicttomark readonly
/packedarraytype 1 index
/filetype mark % data is a file
/stringtype { % convert mask to file
exch pop
1 array astore cvx 0 () /SubFileDecode filter
/MaskDict //update_image3 exec
} bind
/arraytype { % buffer the mask and convert to file
exch pop
//buffer_mask exec
/MaskDict //update_image3 exec
} bind
/packedarraytype 1 index
/filetype {
//systemdict /userdict get /PDFTopSave known {
pop pop % mask is already buffered by PDF interpreter
} {
exch pop % buffer the mask
//buffer_mask exec
/MaskDict //update_image3 exec
} ifelse
} bind
.dicttomark readonly
.dicttomark readonly def
.imagetypes
dup 3 {
dup /InterleaveType get 3 eq {
% .image3 requires data sources of the image and mask to be of the
% same type. Work around this restriction here.
dup /DataDict get /DataSource get
1 index /MaskDict get /DataSource get % <<>> data mask
dup type % <<>> data mask mask_type
2 index
4 index /DataDict get /MultipleDataSources .knownget {
{ 0 get } if
} if
type % <<>> data mask mask_type data_type
//data_mask_dict exch .knownget {
exch .knownget {
exec
} {
pop pop % pass wrong type as is to .image3
} ifelse
} {
pop pop pop % pass wrong type as is to .image3
} ifelse
} if
.image3
} bind put
dup 4 /.image4 load put
% We also detect ImageType 103 here: it isn't worth making a separate file
% just for this.
/.image3x where { pop dup 103 /.image3x load put } if
pop
currentdict /data_mask_dict undef
currentdict /update_image3 undef
currentdict /buffer_mask undef
% ------ Functions ------ %
% Define the FunctionType resource category.
/Generic /Category findresource dup maxlength 3 add dict .copydict begin
/InstanceType /integertype def
/FunctionType currentdict end /Category defineresource pop
{0 2 3} { dup /FunctionType defineresource pop } forall
% ------ Smooth shading ------ %
% Define the ShadingType resource category.
/Generic /Category findresource dup maxlength 3 add dict .copydict begin
/InstanceType /integertype def
/ShadingType currentdict end /Category defineresource pop
systemdict /.shadingtypes mark % not ll3dict
1 /.buildshading1 load
2 /.buildshading2 load
3 /.buildshading3 load
4 /.buildshading4 load
5 /.buildshading5 load
6 /.buildshading6 load
7 /.buildshading7 load
.dicttomark put
systemdict /.reuseparamdict mark
/Intent 2
/AsyncRead //false
/CloseSource //true
.dicttomark readonly put
/.buildshading { % <shadingdict> .buildshading <shading>
dup rcheck not {
% Adobe seems to access ColorSpace first and CET 12-14c checks this.
/$error .systemvar /errorinfo [ /ColorSpace //null ] put
/shfill .systemvar /invalidaccess signalerror
} if
% Unfortunately, we always need to make the DataSource reusable,
% because if clipping is involved, even shfill may need to read
% the source data multiple times. If it weren't for this,
% we would only need to create a reusable stream if the ultimate
% source of the data is a procedure (since the library can't
% suspend shading to do a procedure callout).
dup /DataSource .knownget {
dup type /filetype eq {
//.reuseparamdict /ReusableStreamDecode filter
% Copy the dictionary to replace the DataSource, but make sure the
% copy is in the same VM as the original.
.currentglobal 2 index gcheck .setglobal
% Stack: shdict rsdfile saveglobal
2 index dup length dict copy exch .setglobal
dup /DataSource 4 -1 roll put exch pop
} {
pop
} ifelse
} if
% The .buildshading operators use the current color space
% for ColorSpace.
dup /ShadingType .knownget not { % error handling for CET 12-14b conformance
/$error .systemvar /errorinfo [ /ShadingType //null ] put
/shfill .systemvar /undefined signalerror
} if
dup type /integertype ne {
/$error .systemvar /errorinfo [ /ShadingType 4 index ] put
/shfill .systemvar /typecheck signalerror
} if
//.shadingtypes 1 index .knownget not {
/$error .systemvar /errorinfo [ /ShadingType 4 index ] put
/shfill .systemvar /rangecheck signalerror
} if
exch pop 1 index /ColorSpace .knownget {
{ setcolorspace } stopped {
/$error .systemvar /errorinfo [ /ColorSpace 4 index ] put
/shfill .systemvar /$error .systemvar /errorname get signalerror
} if
exec
} {
/$error .systemvar /errorinfo [ /ColorSpace //null ] put
/shfill .systemvar /undefined signalerror
} ifelse
} bind def
systemdict /.reuseparamdict undef
/.buildpattern2 { % <template> <matrix> .buildpattern2
% <template> <pattern>
% We want to build the pattern without doing gsave/grestore,
% since we want it to load the CIE caches.
1 index /Shading get
mark currentcolor currentcolorspace
counttomark 4 add -3 roll mark 4 1 roll
% Stack: -mark- ..color.. cspace -mark- template matrix shadingdict
{ .buildshading } stopped {
cleartomark setcolorspace setcolor pop stop
} if
.buildshadingpattern
3 -1 roll pop counttomark 1 add 2 roll setcolorspace setcolor pop
} bind def
.patterntypes
2 /.buildpattern2 load put
/shfill { % <shadingdict> shfill -
% Currently, .shfill requires that the color space
% in the pattern be the current color space.
% Disable overprintmode for shfill
{ dup gsave 0 .setoverprintmode .buildshading .shfill } stopped
grestore {
/$error .systemvar /errorinfo 2 copy known {
pop pop
} {
//null put % CET 12-14c
} ifelse
stop
} if
pop
} odef
% Establish an initial smoothness value that matches Adobe RIPs.
0.02 setsmoothness
% ------ DeviceN color space ------ %
% 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
/CIEBasedDEF [] def
/CIEBasedDEFG [] def
/DeviceN [] def
end
% ------ Miscellaneous ------ %
% Make the setoverprintmode and currentoverprintmode operators visible (3015)
% Because of the requirements of PDF, the .currentoverprintmode and
% .setoverprintmode operators have integer parameters. Thus we need to
% convert the Postscript bool parameters to integers.
%
/setoverprintmode % bool setoverprint -
{
{ 1 } { 0 } ifelse % convert bool to integer
//.setoverprintmode
} odef
/currentoverprintmode % - currentoverprintmode bool
{
//.currentoverprintmode
0 ne % convert integers to bool
} odef
% Define additional user and system parameters.
/HalftoneMode 0 .definepsuserparam
/MaxSuperScreen 1016 .definepsuserparam
pssystemparams begin % read-only, so use .forcedef
/MaxDisplayAndSourceList 160000 .forcedef
end
% Define the IdiomSet resource category.
{ /IdiomSet } {
/Generic /Category findresource dup maxlength 3 add dict .copydict begin
/InstanceType /dicttype def
currentdict end /Category defineresource pop
} forall
/languagelevel 3 def
% When running in LanguageLevel 3 mode, this interpreter is supposed to be
% compatible with Adobe version 3010.
/version (3010) readonly def
.setlanguagelevel
end % ll3dict
|