% Copyright (C) 2001-2021 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 -f -F -L -p
% Sun switches implemented:
% -T set tab width
% Switches ignored:
% -GghKkmow -# -C -d -J -n -P -S -s -t -v
% Switches added:
% --add-to-space
% add the given number of 1/72" units to the width of each
% space (may be negative)
% --add-to-width
% add the given number of 1/72" units to the width of each
% character (may be negative)
% --columns
% print in columns
% --detect
% treat the file as PostScript if it starts with %!
% --first-page
% --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
% --kern
% kern using information from the given .AFM file
% --last-page
% stop printing after page
% --(heading|footing)-(left|center|right)
% set the heading/footing fields; use -B first to clear
% --margin-(top|bottom|left|right)
% set a margin
% --no-eject-(file|formfeed)
% end-of-file/FF only starts a new column, not a new sheet
% --spacing
% 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-to-iso-latin-1
%% 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 { % find-latin-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 { % lpdef -
/def 2 true lpexec
} def
/lpexec { % ... 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 { % 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 { % 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 % fontheight
{ 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 { % 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 { % 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== { %