% Copyright (C) 1991 Aladdin Enterprises. All rights reserved.
% Distributed by Free Software Foundation, Inc.
%
% This file is part of Ghostscript.
%
% Ghostscript is distributed in the hope that it will be useful, but
% WITHOUT ANY WARRANTY. No author or distributor accepts responsibility
% to anyone for the consequences of using it or for whether it serves any
% particular purpose or works at all, unless he says so in writing. Refer
% to the Ghostscript General Public License for full details.
%
% Everyone is granted permission to copy, modify and redistribute
% Ghostscript, but only under the conditions described in the Ghostscript
% General Public License. A copy of this license is supposed to have been
% given to you along with Ghostscript so you can know your rights and
% responsibilities. It should be in a file named COPYING. Among other
% things, the copyright notice and this notice must be preserved on all
% copies.
% 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.
% Currently it neither truncates nor wraps over-length lines.
% It only works with fixed-pitch fonts.
% Flags implemented: -12BclrR -b -f -F -L -p
% Flags added:
% -T<n> for defining the tab width
% -P<n> for setting the first page to print
% -Q<n> for setting the last page to print
/lpdict 80 dict def
lpdict begin
% Define the initial values of the printing parameters.
/BodyFont null def % use default
/defaultBodyFont
{ /Courier findfont Landscape { 7 } { 10 } ifelse scalefont } def
/Columns 1 def
/Headers true def
/HeadingLeft () def
/HeadingCenter () def
/HeadingRight null def % use page #
/HeadingFont null def % use default
/defaultHeadingFont
{ /Courier-Bold findfont 10 scalefont } def
/MaxLines 9999 def % max lines per page
/Landscape false def
/OutFile null def % null = write directly to device
/PageFirst 1 def
/PageLast 99999 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.
/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 { n -1 roll dup wosp } repeat
OutFile (\n) writestring
n t
}
ifelse
{ pop load exec }
{ { pop } repeat }
ifelse
} def
/lpmoveto
{ /moveto 2 true lpexec
} def
/lpshow
{ dup length 0 ne { /show 1 false lpexec } { pop } ifelse
} def
/lpsetmyfont
{ dup load setfont
OutFile null ne { cvx /setfont 1 false lpexec } { pop } ifelse
} def
% Define some utility procedures.
/beginpage
{ /lindex 0 def
/skipping pindex PageFirst ge pindex PageLast le and not def
/save 0 true lpexec /pagesave exch def
skipping { nulldevice /OutFile null def } if
Headers
{ /HFont lpsetmyfont
HeadingLeft 0 topskip showline2
HeadingCenter dup stringwidth pop 2 div topskip showline2
HeadingRight null eq
{ (page ) pindex 4 string cvs concatstrings }
{ HeadingRight }
ifelse
dup stringwidth pop pwidth 0.95 mul exch sub
topskip showline2
}
if
/BFont lpsetmyfont
} def
/endpage
{ lindex 0 ne { /showpage 0 false lpexec } if
pagesave /restore 0 true lpexec
/pindex pindex 1 add def
} def
/fontheight % font -> height
{ dup /FontBBox get
dup 3 get exch 1 get sub
exch /FontMatrix get
0 get mul 1.2 mul
} def
/wosp
{ OutFile ( ) writestring OutFile exch write==only
} def
/outfont % name font ->
{ OutFile null ne
{ exch wosp
dup /FontName get wosp OutFile ( findfont) writestring
/FontMatrix get 0 get 1000 mul round cvi wosp
OutFile ( scalefont def\n) writestring
}
{ pop pop
}
ifelse
} def
% showline doesn't do line wrapping yet....
/showline % line -> leftover_line (handles \f)
{ (\f) search
{ { dup length 0 eq { pop exit } if showline1 } loop
endpage beginpage
pop
}
if
showline1
} def
/showline1 % line -> leftover_line (handles page break)
{ lindex llength eq { endpage beginpage } if
lindex colines idiv cowidth mul % x
lindex colines mod fheight mul neg % y
showline2
/lindex lindex 1 add def
()
} def
/showline2 % string x y -> (handles tabs)
{ lpmoveto
{ dup length 0 eq { pop exit } if
(\t) search
{ dup length 0 ne { lpshow } { pop } ifelse pop
currentpoint exch tabwx div
0.05 add ceiling tabwx mul exch lpmoveto
}
{ lpshow exit }
ifelse
} loop
} def
% The main printing procedure
/lp
{ /lpfile exch def
/save 0 true lpexec
% Initialize the device and fonts.
/BFont
BodyFont null eq { defaultBodyFont } { BodyFont } ifelse def
/BFont BFont outfont
Headers
{ /HFont
HeadingFont null eq { defaultHeadingFont } { HeadingFont } ifelse def
/HFont HFont outfont
}
if
% Get the layout parameters.
clippath
Landscape { -90 /rotate 1 true lpexec } if
BFont setfont ( ) stringwidth pop /cwx exch def
cwx Tab mul /tabwx exch def
BFont fontheight /fheight exch def
Headers { HFont fontheight fheight add } { 0 } ifelse
/topskip exch def
pathbbox
2 index sub /plength exch def
2 index sub dup /pwidth exch def
Columns div /cowidth exch def
exch cowidth 0.025 mul add
exch plength 0.98 mul add topskip sub
/translate 2 true lpexec
plength 0.9 mul topskip sub fheight div cvi MaxLines min
dup /colines exch def
Columns mul /llength exch def
OutFile null ne { nulldevice } if
% Print layout
(Page height = ) print llength =only
(.\n) print flush
% Disable stack recording so we can use stopped with readline.
$error /recordstacks false put
% Initialize for the first page.
/lbuf 1000 string def
/pindex 1 def
beginpage
% Iterate through the file.
()
{ dup length /pos exch def
lbuf exch 0 exch putinterval
{ lpfile lbuf pos lbuf length pos sub getinterval readline } stopped
{ exch pop true } if
exch length pos add lbuf exch 0 exch getinterval exch
{ showline }
{ dup length 0 ne { showline } if exit }
ifelse
} loop
pop
% Wrap up.
endpage
/restore 0 true lpexec
} 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 % (FontNNN) -> <font>
{ dup /arg exch def length
{ dup 0 le { exit } if
dup 1 sub arg exch get dup 48 ge exch 59 le and not { exit } if
1 sub
} loop
arg exch 0 exch getinterval dup cvn findfont
exch arg exch anchorsearch pop pop cvr scalefont
} def
% Parse the command line switches.
/doswitch % (-*) argstring ->
{ exch dup cvn lpdict exch known
{ cvn load exec }
{ exch pop (Unknown switch: ) print print (\n) print flush }
ifelse
} def
/more % string ->
{ dup length 0 ne
{ (- ) dup 1 3 index 0 get put
exch dup length 1 sub 1 exch getinterval
doswitch
}
{ pop
}
ifelse
} def
(-1)cvn { /Columns 1 def more } def
(-2)cvn { /Columns 2 def more } def
/-b { /HeadingLeft exch def /HeadingCenter () def /HeadingRight null def
/Headers true def
/break true def
} def
/-B { /Headers false def more } def
/-c { /Truncate true def more } def
/-f { splitfn /BodyFont exch def } def
/-F { splitfn /HeadingFont exch def } def
/-l { 66 -L -B } def
/-L { cvi /MaxLines exch def } def
/-p { (w) file /OutFile exch def OutFile (%!\n) writestring } def
/-P { cvi /PageFirst exch def } def
/-Q { cvi /PageLast exch def } def
/-r { /Landscape true def more } def
/-R { /Landscape false def more } def
/-T { cvi /Tab exch def } def
end
/lpcommand
{ lpdict begin
/break false def
{ 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
}
{ break not { dup /HeadingLeft exch def } if
(r) file lp
}
ifelse
} forall
OutFile null ne { OutFile closefile /OutFile null def } if
end
} def
[ shellarguments
{ ] dup length 0 ne
{ lpcommand
}
{ (Usage: gslp [-12BclrR] [-b<header] [-f<font>] [-F<hfont>]\n) print
( [-L<lines>] [-p<outfile>] [-P<startpage#>] [-Q<stoppage#>]\n) print
( [-T<tabwidth>] file1 ... filen\n) print flush
}
ifelse
}
{ pop }
ifelse
