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#!/usr/bin/env perl
use strict;
use warnings;
use lib ($ENV{EUK_MODULES});
use Fasta_reader;
my $usage = "usage: $0 seqs.fasta\n\n";
my $file = $ARGV[0] or die $usage;
my %seq_to_header;
my $fasta_reader = new Fasta_reader($file);
while (my $seq_obj = $fasta_reader->next()) {
my $sequence = $seq_obj->get_sequence();
my $header = $seq_obj->get_header();
if (exists $seq_to_header{$sequence}) {
$seq_to_header{$sequence} .= "\t$header";
}
else {
$seq_to_header{$sequence} = $header;
}
}
foreach my $sequence (keys %seq_to_header) {
my $header = $seq_to_header{$sequence};
print ">$header\n$sequence\n";
}
exit(0);
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