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#!/usr/local/bin/perl
#############################################################################
# This scripts changes a postscript with twoup so that every other page
# will no longer be printed upside down.
#
# The postscript code was copied from the 'parr' program that came together
# with the perl-reference guide by Johan Vromans.
#
# Copyright (C) 1999 Dov Grobgeld <dov@imagic.weizmann.ac.il>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
#############################################################################
while ($ARGV[0] =~ /^-/) {
$_ = shift;
if (/^-mode/) {
$mode = shift;
}
elsif (/^-tumble/) {
$tumble++;
}
elsif (/^-simplex/) {
$simplex++;
}
elsif (/-h(elp)?/) {
print<<EOH
fixdt - insert tumble and duplex directives in a PostScript file
Syntax:
fixtumble [-simplex] [-tumble] filename
Options:
-simplex Simplex printing. (Default is duplex)
-tumble Tumble pages.
EOH
; exit;
}
}
while(<>) {
unless ($mode) {
if (/dvips/) { $mode='dvips'; }
elsif (/mpage/) { $mode='mpage'; }
elsif (/Start of enscript\.pro/) { $mode='enscript'; }
elsif (/pstops/) { $mode='pstops'; }
elsif (/ditroff/) { $mode='reenc'; }
elsif (($.==1000) || eof) { $mode='giveup'; last; }
}
else {
if ($mode eq 'dvips') {
last if /%%EndSetup/;
}
elsif ($mode eq 'mpage') {
last if /^statusdict/;
}
elsif ($mode eq 'enscript') {
last if /^%%EndProlog/;
}
elsif ($mode eq 'reenc') {
last if /^\/reencsmalldict/;
}
}
push(@P,$_);
}
die "Unable to determine format!\n" unless $mode;
if ($mode eq 'giveup') {
# Insert in first noncomment place
$i=0;
$p=shift(@P);
(print $p), ($p=shift(@P)) until $p!~ /^%/;
$_= $p.join("",@P) . $_;
}
else { print @P; }
print 'statusdict /setduplexmode known ' .
'{ statusdict begin true setduplexmode end } if',"\n" unless $simplex;
print 'statusdict /settumble known ' .
'{ statusdict begin true settumble end } if',"\n" if $tumble;
print $_;
# Copy the rest of it
while (<>) {
print;
}
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