#!/usr/bin/perl -w
use strict;
use warnings;
use File::Find;

sub scan {
	my %found;
	for my $dir (@_) {
		my $topdir = $dir;
		find(
			sub {
				if (-f $File::Find::name && $File::Find::name =~ /\.pm$/ ) {
					my $fn = $File::Find::name;
					$fn =~ s/\Q$topdir//g;
					$fn =~ s/\//::/g;
					$fn =~ s/^:://g;
					$fn =~ s/\.pm//g;
					$found{$fn} = ($fn =~ tr/://) / 2;
				}
			},
			$dir
		);
	}
	%found;
}
my %found = scan(@INC);	# erstmal alle Unterverzeichnisse einlesen
my @modules;
foreach my $name (sort {$found{$a} <=> $found{$b}} keys %found) {
	if ($found{$name}) {	# ab zweiter Hirarchie nicht mehr inventarisieren, z.B. nur Authen::SASL und nicht Authen::SASL::CRAM_MD5
		my @temp = split /::/,$name;
		my $flag = 0;
		for (my $z = 0; $z < scalar @temp - 1; $z ++) {
			if (defined $found{join('::',@temp[0..$z])}) {	# z.B. App::Packer::PAR hat nur die dritte Hirarchie
				$flag = 1;
				last;
			}
		}
		push @modules,$name if !$flag;
	}
	else { push @modules,$name; }
}
foreach (sort {lc $a cmp lc $b} @modules) {
	print "$_\n";
}