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package Forest::Tree::Writer::ASCIIWithBranches;
use Moose;
our $VERSION = '0.09';
our $AUTHORITY = 'cpan:STEVAN';
with 'Forest::Tree::Writer',
'Forest::Tree::Roles::HasNodeFormatter';
sub as_string {
my ($self) = @_;
my $out = '';
my @vert_dashes;
$self->tree->traverse(sub {
my $t = shift;
$out .= $self->_process_node($t, \@vert_dashes);
});
return $out;
}
sub _process_node {
my ($self, $t, $vert_dashes) = @_;
my $depth = $t->depth;
my $sibling_count = $t->is_root ? 1 : $t->parent->child_count;
my @indent = map {
$vert_dashes->[$_] || " "
} 0 .. $depth - 1;
@$vert_dashes = (
@indent,
($sibling_count == 1
? (" ")
: (" |"))
);
if ($sibling_count == ($t->get_index_in_siblings + 1)) {
$vert_dashes->[$depth] = " ";
}
return ((join "" => @indent[1 .. $#indent])
. ($depth ? " |---" : "")
. $self->format_node($t)
. "\n");
}
__PACKAGE__->meta->make_immutable;
no Moose; 1;
__END__
=pod
=head1 NAME
Forest::Tree::Writer::ASCIIWithBranches - A slightly more complex ASCII writer
=head1 SYNOPSIS
use Forest::Tree::Writer::ASCIIWithBranches;
my $w = Forest::Tree::Writer::ASCIIWithBranches->new(tree => $tree);
print $w->as_string; # outputs ....
# root
# |---1.0
# | |---1.1
# | |---1.2
# | |---1.2.1
# |---2.0
# | |---2.1
# |---3.0
# |---4.0
# |---4.1
# |---4.1.1
=head1 DESCRIPTION
=head1 METHODS
=over 4
=item B<>
=back
=head1 BUGS
All complex software has bugs lurking in it, and this module is no
exception. If you find a bug please either email me, or add the bug
to cpan-RT.
=head1 AUTHOR
Stevan Little E<lt>stevan.little@iinteractive.comE<gt>
=head1 COPYRIGHT AND LICENSE
Copyright 2008-2010 Infinity Interactive, Inc.
L<http://www.iinteractive.com>
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=cut
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