Need context information within dynamic filter

Hello,

I have written a custom dynamic filter ; its goal being internationalization of templates. Now I need that filter to find out about its calling template (I don't ask for the line number in the template).

I found out that filters get a Template::Context object as their first parameter. A few dump later I managed to get the calling template filename via the component entry of the stash. Here is my code :

sub myCustomFilter {
    my ($context, @arg) = @_;

    my $stash = $context->stash();
    my $component = $stash->get('component');
    my $template_name = $component->{'name'};
...
}

I also need to find out the full path of the calling template.
How can I get it from the Template::Context object ?

Thanks.