package Filter::Handle; use strict; sub import { my $class = shift; return if !@_; my $caller = caller; if ($_[0] eq "subs") { no strict 'refs'; for my $sub (qw/Filter UnFilter/) { *{"${caller}::$sub"} = \&{"${class}::$sub"}; } } } sub Filter { my $fh = $_[0]; tie *{ $fh }, __PACKAGE__, @_; } sub UnFilter { my $fh = shift; { local $^W = 0; untie *{ $fh } } } sub TIEHANDLE { my $class = shift; my $fh = shift or die "Need a filehandle."; my $output = shift || sub { my($file, $line) = (caller(1))[1,2]; sprintf "%s:%d - %s\n", $file, $line, "@_" }; bless { fh => $fh, output => $output }, $class; } sub new { Filter(@_[1..$#_]); bless { fh => $_[1] }, $_[0] } sub DESTROY { my $self = shift; UnFilter($self->{fh}); } sub PRINT { my $self = shift; my $fh = *{ $self->{fh} }; ## thanks, chromatic :) print $fh $self->{output}->(@_); } sub PRINTF { my $self = shift; my $fmt = shift; @_ = ($self, sprintf $fmt, @_); goto &PRINT; ## thanks, tilly :) } 1;