#!/usr/bin/perl

use warnings;
use strict;

use Bio::AlignIO;
use Bio::SeqIO;
use Bio::Tools::Run::Alignment::Clustalw;

my $file = shift or die; # Get filename from command prompt.
my $factory = Bio::Tools::Run::Alignment::Clustalw->new(-matrix => 'BLOSUM');
my $ktuple = 3;
$factory->ktuple($ktuple);

my $inseq = Bio::SeqIO->new(
                    -file => "<$file",
                    -format => $format
                   );

my $seq;
my @seq_array;
while ($seq = $inseq->next_seq) {
    push(@seq_array, $seq);
}

# Now we do the actual alignment.
my $seq_array_ref = \@seq_array;
my $aln = $factory->align($seq_array_ref);