I have an application that is being expanded to the UK and I will need to add support for Latin-9 Unicode. I have done some Googling but found nothing solid as to what is involved in the process. Any tips?

Here is some code (Just the bits for Unicode stuff)

use Unicode::String qw(utf8 latin1 utf16);

# How to call
$encoded_txt = $self->unicode_encode($item->{value});

# Function part
sub unicode_encode {

    shift() if ref($_[0]);
    my $toencode = shift();
    return undef unless defined($toencode);

    Unicode::String->stringify_as("utf8");
    my $unicode_str = Unicode::String->new();


    # encode Perl UTF-8 string into latin1 Unicode::String
    #  - currently only Basic Latin and Latin 1 Supplement
    #    are supported here due to issues with Unicode::String .
    $unicode_str->latin1( $toencode );
    ...

Any help would be great and thanks.