use Text::xSV;

sub build_hash {
    my ($file_) = @_;

    my $reader = Text::xSV->new();
    $reader->open_file( $file_ );

    my %result;
    my $line = 0;
    while ( my $row = $reader->get_row() ) {
#        @{ $result{ ++$line } }{ 1 .. scalar(@$row) } = @$row;

        $line++;
        for my $i ( 1 .. @$row ) {
            $result{$line}{$i} = $row->[ $i-1 ]
        }
    }

    return %result;
}