#!/usr/bin/env perl
#
# Note: t/test.t searches for the next line.
# Annotation: Demonstrates graphing a Perl data structure.
use strict;
use warnings;
use File::Spec;
use GraphViz2;
use GraphViz2::Data::Grapher;
use Log::Handler;
# ------------------------------------------------
my($logger) = Log::Handler -> new;
$logger -> add
(
screen =>
{
maxlevel => 'debug',
message_layout => '%m',
minlevel => 'error',
}
);
my($sub) = sub{};
my($s) =
{
A =>
{
a =>
{
},
bbbbbb => $sub,
c123 => $sub,
d => \$sub,
},
C =>
{
b =>
{
a =>
{
a =>
{
},
b => sub{},
c => 42,
},
},
},
els => [qw(element_1 element_2 element_3)],
};
my($graph) = GraphViz2 -> new
(
edge => {color => 'grey'},
global => {directed => 1},
graph => {rankdir => 'TB'},
logger => $logger,
node => {color => 'blue', shape => 'oval'},
);
my($g) = GraphViz2::Data::Grapher -> new(graph => $graph, logger => $logger);
my($format) = shift || 'svg';
my($output_file) = shift || File::Spec -> catfile('html', "parse.data.$format");
$g -> create(name => 's', thing => $s);
$graph -> run(format => $format, output_file => $output_file);
# If you did not provide a GraphViz2 object, do this
# to get access to the auto-created GraphViz2 object.
#$g -> create(name => 's', thing => $s);
#$g -> graph -> run(format => $format, output_file => $output_file);
# Or even
#$g -> create(name => 's', thing => $s)
#-> graph
#-> run(format => $format, output_file => $output_file);