+ return(0);
+}
+
+sub filter
+{
+ my($self, $base, @dirs)=@_;
+ my @outdirs=();
+ for my $dir (@dirs)
+ {
+ print "hascontents: $base / $dir\n";
+ my $path=ID3FS::Path->new($self->{db}, "$base/$dir");
+ next unless($path->isvalid());
+ my($subdirs,$subfiles)=$path->dirents();
+ print "SUBDENTS: ", join(", ", @$subdirs, @$subfiles), "\n";
+ next unless(@$subdirs || @$subfiles);
+ if(!@$subfiles || scalar(@$subdirs) < 3)
+ {
+ my $subdirents=0;
+ for my $subdir (@$subdirs)
+ {
+ if(grep { $_ eq $subdir; } qw(AND OR NOT))
+ {
+ my $subsubpath=ID3FS::Path->new($self->{db}, "$base/$dir/$subdir");
+ if($path->isvalid())
+ {
+ my($subsubdirs,$subsubfiles)=$subsubpath->dirents();
+ $subdirents++ if(@$subsubdirs || @$subsubfiles);
+ }
+ }
+ else
+ {
+ $subdirents++;
+ }
+ }
+ next unless($subdirents);
+ }
+ push(@outdirs, $dir);
+ }
+ return(@outdirs)