#!/usr/bin/perl -wT
#won't increase line size, only decrease
use strict;
use Text::Wrap;

die "\n\nusage: \n\t $0 <filename> [column width]\n"
unless @ARGV==1 or @ARGV==2;

open(FH,$ARGV[0])
or die "couldn't open $ARGV[0] $!";

$ARGV[0]=~ /^([-\@\w.]+)$/;     # word chars only

my $clean_out=$1;
$clean_out eq $ARGV[0] or die "bad char in filename $ARGV[0]";

local $/= undef; # read entire file at once
my @text=<FH>;
close (FH);

open(FH, '>',"$clean_out.wrap")
or die "couldn't open ${clean_out}.wrap for writing";

$Text::Wrap::columns = $ARGV[1] || 70;

print FH wrap('', '', @text);
close(FH);