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Up to [local] / src / usr.sbin / pkg_add

some minor systematic changes.
- mark all regexps I can with /o if they can be compiled once.
- turn $o->method() into $o->method
- remove unneeded prototypes
- reduce split /re/ into split "string" where possible.

#! /usr/bin/perl
# ex:ts=8 sw=4:
# $OpenBSD: pkg_audit,v 1.4 2007/06/04 14:40:39 espie Exp $
#
# Copyright (c) 2003-2004 Marc Espie <espie@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

use strict;
use warnings;
use OpenBSD::PackingList;
use OpenBSD::PackageInfo;
use File::Find;

my %found;

for my $pkg (installed_packages()) {
	my $plist = OpenBSD::PackingList->from_installation($pkg, 
	    \&OpenBSD::PackingList::FilesOnly);
	print "$pkg...\n";
	for my $item (@{$plist->{items}}) {
		next unless $item->IsFile;
		$found{$item->fullname} = $pkg;
	}
}

find(sub {
	return unless -f $_;
	print $File::Find::name, "\n" unless $found{$File::Find::name};
}, '/usr/local');