summaryrefslogtreecommitdiff
blob: 9e2c21bf3041b4c3bd06ae3af517c5d517f721bc (plain)
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
% Copyright (C) 2001-2020 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.
%

% gslp.ps - format and print text

% This utility provides functionality approximately equivalent to the Unix
% `enscript' program.  It prints plain text files using a single font.
% It currently handles tabs and formfeeds, but not backspaces.
% It will line-wrap when using fixed-pitch fonts.
% It will also do kerning and width adjustment.
% Standard switches implemented:
%	-12BclqRr -b<header> -f<font> -F<hfont> -L<lines> -p<outfile>
% Sun switches implemented:
%	-T<n>	set tab width
% Switches ignored:
%	-GghKkmow -# -C -d -J -n -P -S -s -t -v
% Switches added:
%	--add-to-space <units>
%		add the given number of 1/72" units to the width of each
%		space (may be negative)
%	--add-to-width <units>
%		add the given number of 1/72" units to the width of each
%		character (may be negative)
%	--columns <n>
%		print in <n> columns
%	--detect
%		treat the file as PostScript if it starts with %!
%	--first-page <n>
%     --duplex(|-long-edge|-short-edge)
%             use duplex if available; if not specified, select long edge
%             for portrait printing, short edge for landscape
%		start printing at page <n>
%	--kern <file.afm>
%		kern using information from the given .AFM file
%	--last-page <n>
%		stop printing after page <n>
%	--(heading|footing)-(left|center|right) <string>
%		set the heading/footing fields; use -B first to clear
%	--margin-(top|bottom|left|right) <inches>
%		set a margin
%	--no-eject-(file|formfeed)
%		end-of-file/FF only starts a new column, not a new sheet
%	--spacing <n>
%		use double (n=2), triple (n=3), etc. spacing
% Also, the string %# in a heading or footing is replaced with the page #.
/PageNumberString (%#) def

/lpdict 150 dict def
lpdict begin

% build iso-latin-1 version of a font
/font-to-iso-latin-1 {	% <font> font-to-iso-latin-1 <font>
    %% reencode for iso latin1; from the 2nd edition red book, sec 5.6.1
    dup length dict begin {1 index /FID ne {def} {pop pop} ifelse} forall
    /Encoding ISOLatin1Encoding def currentdict end
    dup /FontName get 80 string cvs (-ISOLatin1) concatstrings cvn
    exch definefont
} def

/find-latin-font {	% <name> find-latin-font <font>
  findfont font-to-iso-latin-1
} def

% Define the initial values of the printing parameters.

/AddToSpace 0 def
/AddToWidth 0 def
/BodyFont null def		% use default
  /defaultBodyFontPortrait
    /Courier find-latin-font 10 scalefont def
  /defaultBodyFontLandscape
    /Courier find-latin-font 7 scalefont def
  /defaultBodyFont
    { Landscape { defaultBodyFontLandscape } { defaultBodyFontPortrait } ifelse } def
/Columns 1 def
/DetectFileType false def
/Duplex null def
/EjectEOF true def
/EjectFF true def
/Footers false def
/FootingLeft () def
/FootingCenter () def
/FootingRight () def
/Headers true def
/HeadingLeft () def
/HeadingCenter () def
/HeadingRight (page ) PageNumberString concatstrings def
/HeadingFont null def		% use default
  /defaultHeadingFont
    /Courier-Bold find-latin-font 10 scalefont def
/Kern 0 dict def		% no kerning
/Landscape false def
/MarginBottom 36 def		% 1/2"
/MarginLeft 36 def		% 1/2"
/MarginRight 36 def		% 1/2"
/MarginTop 36 def		% 1/2"
/MaxLines 9999 def		% max lines per page
/Noisy true def			% i.e., not quiet
/OutFile null def		% null = write directly to device
/PageFirst 1 def
/PageLast 99999 def
/Spacing 1 def
/Tab 8 def
/Truncate false def		% wrap long lines, don't truncate

% When writing to a file, we want to write out PostScript;
% when writing to the printer, we want to execute it;
% some commands should be executed regardless.
% lpexec provides for all this.

/lpdef {	% <name> <value> lpdef -
  /def 2 true lpexec
} def

/lpexec {	% <arg1> ... <argn> </op> <n> <do_always> lpexec -
  OutFile null eq {
    pop 1 add true
  } {
    /t exch def 1 add /n exch def cvx
    n -1 roll dup wo
    n 1 sub { n -1 roll dup wosp } repeat
    (\n) ws n t
  } ifelse
    { pop load exec }
    { { pop } repeat }
  ifelse
} def

/lpmoveto {	% <x> <y> lpmoveto -
        % Round the coordinates for smaller output.
  2 {
    exch 100 mul round 100 div
    dup dup cvi eq { cvi } if
  } repeat
  1 index X eq { neg exch pop /V 1 } { neg /M 2 } ifelse true lpexec
} def
/lpshow {	% <string> lpshow -
  dup length 0 ne {
    addspace 0 ne {
      addspace 0 32
      addwidth 0 ne {
        addwidth 0 6 -1 roll /awidthshow 6 true lpexec
      } {
        4 -1 roll /widthshow 4 true lpexec
      } ifelse
    } {
      addwidth 0 ne {
        addwidth 0 3 -1 roll /ashow 3 true lpexec
      } {
        OutFile null ne {
          dup dup length =string length gt {
            /show 1 false lpexec
          } {
            (S ) ws ws (\n) ws
          } ifelse
        } if show
      } ifelse
    } ifelse
  } {
    pop
  } ifelse
} def
/lpsetmyfont {
  dup load setfont
   OutFile null ne { cvx /setfont 1 false lpexec } { pop } ifelse
} def

% Define some utility procedures.

/banner		% ypos left center right
 { /HFont lpsetmyfont
   /addspace 0 def /addwidth 0 def
   /pairkern 0 dict def
   3 -1 roll bannerstring pop 0 4 index pwidth showline2 pop
   exch bannerstring pwidth exch sub 2 div 3 index pwidth showline2 pop
   bannerstring
                % Prevent the last character of the heading from grazing
                % the right margin.
                % ****** WHY DOES IT REQUIRE SO MUCH PADDING? ******
   ( ) stringwidth pop 2 mul add
   pwidth exch sub
   3 -1 roll pwidth showline2 pop
 } def

/bannerstring	% string -> string width
  { PageNumberString search
     { exch pop pindex 4 string cvs concatstrings exch concatstrings
     }
    if dup stringwidth pop
  } def

/beginpage
 { /lindex 0 def
   /skipping pindex PageFirst ge pindex PageLast le and not def
   pagex pagey Landscape {/BL} {/B} ifelse 2 true lpexec
   /pagesave exch def
   skipping { nulldevice   /OutFile null def } if
   Headers
    { lheight hdescent add
      HeadingLeft HeadingCenter HeadingRight banner
    } if
   /BFont lpsetmyfont
   /pairkern Kern def
   /addspace AddToSpace def /addwidth AddToWidth def
   pairkern length 0 ne {
     /addspace AddToSpace lpdef /addwidth AddToWidth lpdef
   } if
 } def

/endpage {
  lindex 0 ne {
    Footers {
      topskip plength sub hdescent add
      FootingLeft FootingCenter FootingRight banner
    } if
    /E
  } {
    /restore
  } ifelse
  pagesave exch 0 true lpexec
  /pindex pindex 1 add def
} def

/endcolumn
 { lindex colines 1 sub add colines idiv colines mul
   dup llength ge { pop endpage beginpage } { /lindex exch def } ifelse
 } def

/fontheight	% <font> fontheight <ascent> <height>
 { gsave setfont
   newpath 0 0 moveto
   (|^_j) false charpath
   pathbbox exch pop dup 2 index sub 4 -2 roll pop pop
   grestore exch 1.25 mul exch 1.25 mul
 } def

/wdict {
  dup length wosp ( dict\n) ws
  { (dup) ws exch wosp wosp ( put\n) ws } forall
} def
/wosp { ( ) ws wo } def
/wo {
  dup type /dicttype eq { wdict } { OutFile exch write==only } ifelse
} def
/ws {
  OutFile exch writestring
} def

/outfont {		% <name> <font> outfont -
  OutFile null ne {
    exch wo
    dup /FontName get
    dup wosp (-ISOLatin1) ws wosp ( RE) ws
    /FontMatrix get 0 get 1000 mul round cvi wosp
    ( scalefont def\n) ws
  } {
    pop pop
  }ifelse
} def

/StringFF (\f) def
/CharFF StringFF 0 get def
/StringTAB (\t) def
/CharTAB StringTAB 0 get def

/showline		% line -> leftover_line (handles \f)
 {  { showline1 dup length 0 eq { exit } if
      dup 0 get CharFF ne { exit } if
      EjectFF { endpage beginpage } { endcolumn } ifelse
      skip1
    }
   loop
 } def

/showline1		% line -> leftover_line (handles page break)
 { lindex llength eq { endpage beginpage } if
   lindex colines idiv cowidth mul		% x
   lindex colines mod 1 add lheight mul neg fascent sub	% y
   1 index cowidth add
   showline2
   /lindex lindex 1 add def
 } def

/setxy {
  /ty exch def /tx exch def
} def

/showline2 {	% string x y xlimit -> leftover_string (handles tabs)
  2 index exch 5 2 roll setxy {
                % Stack: xinit xlimit string
    showline3 dup length 0 eq { exit } if
    dup 0 get CharTAB ne { exit } if
    tx 3 index sub tabwx div
      0.05 add ceiling tabwx mul 3 index add ty setxy
    skip1
    tx 2 index ge { exit } if
  } loop exch pop exch pop
} def

/showline3 {	% xlimit string -> xlimit leftover_string
                % (finds line break / tab / formfeed)
  1 index tx sub
    cwx div 0.1 add cvi 0 .max 1 index length .min
  1 index 0 3 -1 roll getinterval
        % look for \f or \t
  StringFF search { exch pop exch pop } if
  StringTAB search { exch pop exch pop } if
  dup length 0 ne {
    tx ty lpmoveto
    dup pairkern length 0 eq {
      lpshow
    } {
      { kproc } exch /kshow 2 true lpexec
    } ifelse
    currentpoint setxy
  } if
  length dup 2 index length exch sub getinterval
} def

/kproc {	% <char1> <char2> kproc -
  pairkern currentfont /Encoding get 3 index get
  2 copy known {
    get currentfont /Encoding get 2 index get
    2 copy known {
      get currentfont /FontMatrix get 0 get mul
    } {
      pop pop 0
    } ifelse
  } {
    pop pop 0
  } ifelse
  addwidth add 2 index 32 eq { addspace add } if
  dup 0 eq { pop } { 0 rmoveto } ifelse
  pop pop
} def

/skip1
 { dup length 1 sub 1 exch getinterval
 } def

/e== {		% <object> e== - -- print an object to stderr
  (%stderr) (w) file dup 3 -1 roll write==only flushfile
} def

/eprint {	% <string> eprint - -- print a string to stderr
  (%stderr) (w) file dup 3 -1 roll writestring flushfile
} def

% Read kerning information from a .AFM file.

/readkern {	% <afmfile> readkern <pairkerndict>
  /mfilename 1 index def
  (r) file /mfile exch def
  mfile =string readline pop
  (StartFontMetrics ) anchorsearch {
    pop pop
    /kdict 256 dict def
    { mfile =string readline pop
      (EndFontMetrics) anchorsearch { pop pop exit } if
      (KPX ) anchorsearch {
        pop token pop cvlit /char1 exch def
        token pop cvlit /char2 exch def
        token pop /kern exch def pop
        kdict char1 .knownget not {
          5 dict kdict char1 2 index .growput
        } if
        char2 kern .growput
      } {
        pop
      } ifelse
    } loop kdict
  } {
    pop
    mfilename eprint ( does not begin with StartFontMetrics.\n) eprint
    0 dict
  } ifelse
  mfile closefile
} def

% The main printing procedure

/doFirst true def
/prevBFont null def
/prevHFont null def

/lpfirst {	% - lpfirst -
% Define some abbreviating procedures.
  /B {save 3 1 roll translate /X 0 def} lpdef
  /BL {save 3 1 roll 90 rotate translate /X 0 def} lpdef
  /P {/setpagedevice where {pop  % <key> <value> P
      5 dict begin 2 copy def
      /Policies 2 dict dup 4 index 1 put def currentdict end setpagedevice
      } {pop pop} ifelse} lpdef
  /E {showpage restore} lpdef
  /V {neg X exch moveto} lpdef
  /M {/X 2 index def neg moveto} lpdef
  /S {currentfile =string readline pop show} lpdef
  /RE {		% <isoname> <fontname> RE <font>
    findfont
        %% reencode for iso latin1; from the 2nd edition red book, sec 5.6.1
    dup length dict begin {1 index /FID ne {def} {pop pop} ifelse} forall
    /Encoding ISOLatin1Encoding def currentdict end
    definefont
  } lpdef
} def

/lp {		% file initial_chars ->
  /lpline exch def
  /lpfile exch def

  doFirst { lpfirst /doFirst false def } if

% Initialize the device and fonts.
  /BFont
    BodyFont null eq { defaultBodyFont } { BodyFont } ifelse def
  BFont prevBFont ne {
    /BFont BFont outfont
    /prevBFont BFont def
  } if
  Headers Footers or {
    /HFont
      HeadingFont null eq { defaultHeadingFont } { HeadingFont } ifelse def
    HFont prevHFont ne {
      /HFont HFont outfont
      /prevHFont HFont def
    } if
  } if
  save

% Get the layout parameters.
   clippath
   gsave	% for possible rotation
   Landscape { 90 rotate } if
   BFont setfont ( ) stringwidth pop /cwx exch def
     cwx Tab mul /tabwx exch def
   BFont fontheight /fheight exch def /fascent exch def
   Headers Footers or { HFont fontheight } { 0 0 } ifelse
     /hheight exch def /hascent exch def
     /hdescent hheight hascent sub def
   fheight Spacing mul /lheight exch def
   Headers { hheight lheight add } { 0 } ifelse
     /topskip exch def
   Footers { hheight lheight add } { 0 } ifelse
     /botskip exch def
   /pskip topskip botskip add def
        % Translate the page so that (0,0) corresponds to
        % the top of the topmost body line.
   pathbbox
     2 index sub MarginBottom MarginTop add sub /plength exch def
     2 index sub MarginLeft MarginRight add sub /pwidth exch def
     pwidth Columns div /cowidth exch def
     exch MarginLeft add
     exch MarginBottom add plength add topskip sub
     /pagey exch def /pagex exch def
   plength pskip sub lheight div cvi MaxLines .min
     dup /colines exch def
     Columns mul /llength exch def
   grestore
   OutFile null ne { nulldevice } if

% Print layout
   Noisy
    { (Page height = ) eprint llength e==
      (.\n) eprint flush
    } if

    colines 1 lt cowidth 1 lt or
    {
      (Page too small, it must be large to hold at least one line of text\n) eprint
      (please specify a page size using for example -sPAPERSIZE=(a4|letter)\n) eprint
      /gslp.ps cvx /limitcheck signalerror
    } if


% Set duplex if requested.
  Duplex null ne {
    /Duplex true /P 2 false lpexec
    /Tumble Duplex /P 2 false lpexec
  } if

% Write the kerning table, if relevant.
   OutFile null ne Kern length 0 ne and {
     (/kproc) ws /kproc load wosp ( def\n) ws
     (/pairkern) ws Kern wosp ( def\n) ws
   } if

% Disable stack recording so we can use stopped with readline.
   $error /recordstacks false put

% Initialize for the first page.
   /lbuf 64000 string def
   /pindex 1 def
   beginpage

% Iterate through the file.
   lpline
    { dup length /pos exch def
      lbuf exch 0 exch putinterval
       { lpfile lbuf pos lbuf length pos sub getinterval readline } stopped
       {	% Filled the line before a CR or EOF.
         exch pop showline
       }
       {	% Reached CR and/or EOF first.
         exch length pos add lbuf exch 0 exch getinterval
         1 index { showline } if		% omit final empty line
          { dup length 0 eq Truncate or { pop () exit } if
            showline
          }
         loop
         exch not { exit } if
       }
      ifelse
      pindex PageLast gt { exit } if
    } loop
   pop

% Wrap up.
%**************** WHY IS THIS COMMENTED OUT? ****************
%   EjectEOF { endpage } { endcolumn } ifelse
   endpage
   restore

} def

end

% Usage: <file> lp
%   prints <file> using the current parameter settings.
% Usage: [ <arg1> ... <argn> ] lpcommand
%   interprets args like a command line.

/lp { save   lpdict begin () lp end   restore } def

lpdict begin

/splitfn		% (FontNN.NN) -> <font>
 { dup /arg exch def length
    { dup 0 le { exit } if
      dup 1 sub arg exch get dup 48 ge 1 index 59 le and exch 46 eq or not { exit } if
      1 sub
    } loop
   arg exch 0 exch getinterval dup cvn find-latin-font
   exch arg exch anchorsearch pop pop cvr scalefont
 } def

% Parse the command line switches.

/doswitch	% argn ... arg1 (-?) restofswitch ->
 { exch dup cvn lpdict exch known
    { cvn load exec }
    { exch pop (Unknown switch: ) eprint eprint (\n) eprint }
   ifelse
 } def

/more		% argn ... arg1 restofswitch ->
 { dup length 0 ne
    { (- ) dup 1 3 index 0 get put
      exch dup length 1 sub 1 exch getinterval
      doswitch
    }
    { pop
    }
   ifelse
 } def

/-- { (--) exch concatstrings
      dup cvn lpdict exch known
       { cvn load exec }
       { (Unknown switch: ) eprint eprint (\n) eprint }
      ifelse
    } def
/--add-to-space { cvr /AddToSpace exch def } def
/--add-to-width { cvr /AddToWidth exch def } def
/--columns { cvi 1 .max /Columns exch def } def
/--detect { /DetectFileType true def } def
/--duplex { /Duplex {Landscape} def } def
/--duplex-long-edge { /Duplex false def } def
/--duplex-short-edge { /Duplex true def } def
/--first-page { cvi /PageFirst exch def } def
/--footing-center { /FootingCenter exch def   /Footers true def } def
/--footing-left { /FootingLeft exch def   /Footers true def } def
/--footing-right { /FootingRight exch def   /Footers true def} def
/--heading-center { /HeadingCenter exch def   /Headers true def } def
/--heading-left { /HeadingLeft exch def   /Headers true def } def
/--heading-right { /HeadingRight exch def   /Headers true def } def
/--kern { readkern /Kern exch def } def
/--last-page { cvi /PageLast exch def } def
/--margin-bottom { cvr 72.0 mul /MarginBottom exch def } def
/--margin-left { cvr 72.0 mul /MarginLeft exch def } def
/--margin-right { cvr 72.0 mul /MarginRight exch def } def
/--margin-top { cvr 72.0 mul /MarginTop exch def } def
/--no-eject-file { /EjectEOF false def } def
/--no-eject-formfeed { /EjectFF false def } def
/--spacing { cvr /Spacing exch def } def

/-# { pop } def		% ignore
/-+ { -- } def
(-1)cvn { /Columns 1 def   more } def
(-2)cvn { /Columns 2 def   more } def
/-b { /HeadingLeft exch def   /HeadingCenter () def   /HeadingRight PageNumberString def
      /Headers true def
      /break true def
    } def
/-B { /HeadingLeft () def   /HeadingCenter () def   /HeadingRight () def
      /Headers false def
      /FootingLeft () def   /FootingCenter () def   /FootingRight () def
      /Footers false def
      /break true def
      more
    } def
/-C { pop } def		% ignore
/-c { /Truncate true def   more } def
/-d { pop } def		% ignore
/-f { splitfn /BodyFont exch def } def
/-F { splitfn /HeadingFont exch def } def
/-G { more } def	% ignore
/-g { more } def	% ignore
/-h { more } def	% ignore
/-J { pop } def		% ignore
/-K { more } def	% ignore
/-k { more } def	% ignore
/-l { 66 -L -B } def
/-L { cvi /MaxLines exch def } def
/-m { more } def	% ignore
/-n { pop } def		% ignore
/-o { more } def	% ignore
/-p { (w) file /OutFile exch def   OutFile (%!\n) writestring } def
/-P { pop } def		% ignore
/-q { /Noisy false def   more } def
/-r { /Landscape true def   more } def
/-R { /Landscape false def   more } def
/-S { pop } def		% ignore
/-s { pop } def		% ignore
/-T { cvi /Tab exch def } def
/-v { pop } def		% ignore
/-w { more } def	% ignore

/lp1		% filename ->
 { break not { dup /HeadingLeft exch def } if
   Noisy
    { (Printing ) eprint dup eprint (\n) eprint
    } if
   (r) file
                % If requested, check for a PostScript file.
   DetectFileType
    { dup 2 string readstring pop dup (%!) eq
       {	% Yes, it's a PostScript file.
         pop dup 80 string readline pop pop cvx exec
       }
       { lp
       }
      ifelse
    }
    { () lp
    }
   ifelse
 } bind def

/lpcstring 8192 string def

end

/lpcommand		% <[arg1 ... argn]> lpcommand <any_printed>
 {	% Push the commands on the stack in reverse order
   mark exch
   dup length 1 sub -1 0 { 1 index exch get exch } for pop
   lpdict begin
   /any false def
   /break false def
    { dup mark eq { pop exit } if
      dup length 2 ge { dup 0 get (-) 0 get eq } { false } ifelse
       { dup 0 2 getinterval
         exch dup length 2 sub 2 exch getinterval
         doswitch
       }
       { dup  /matched false def
          { /matched true def   /any true def   lp1 } lpcstring filenameforall
         matched { pop } { lp1 } ifelse		% let the error happen
       }
      ifelse
    } loop
   OutFile null ne
    { OutFile (%stdout) (w) file ne { OutFile closefile } if
      /OutFile null def
    } if
   any
   end
 } def

[ .shellarguments
 { ] dup length 0 ne { lpcommand } { false } ifelse not
    { (%stderr) (w) file
      [ (Usage: )
        /PROGNAME where { pop PROGNAME } { (gslp) } ifelse
        ( [-12BclqRr] [-b<header>] [-f<font>] [-F<hfont>]\n)
        (        [-L<lines>] [-p<outfile>] [-T<tabwidth>]\n)
        (        [--add-to-(space|width) <units>] [--columns <n>]\n)
        (        [--detect] [--first-page <page#>] [--last-page <page#>]\n)
        (        [--(heading|footing)-(left|right|center) <string>]\n)
        (        [--kern <afmfile>] [--margin-(top|bottom|left|right) <inches>]\n)
        (        [--no-eject-(file|formfeed)] [--spacing <n>] file1 ... filen\n)
      ] { 2 copy writestring pop } forall dup flushfile closefile
    }
   if
 }
 { pop }
ifelse