#!/usr/bin/env perl

# Convert an input file containing a Graph::Easy description to
# standalone SVG file

# Example usage:
#  examples/as_svg t/in/2nodes.txt >test.svg
#  echo "[ A ] -> [ B ]" | examples/as_svg

BEGIN { $|++; }

use strict;
use lib 'lib';
use Graph::Easy::Parser;

my $file = shift;

if (!defined $file)
  {
  $file = \*STDIN;
  binmode STDIN, ':utf8' or die ("binmode STDIN, ':utf8' failed: $!");
  }
my $parser = Graph::Easy::Parser->new( debug => (shift||0) );

my $graph = $parser->from_file( $file );

die ($parser->error()) unless defined $graph;
$graph->timeout(60);
$graph->layout();
warn ($graph->error()) if $graph->error();

binmode STDOUT, ':utf8' or die ("binmode STDOUT, ':utf8' failed: $!");
print $graph->as_svg_file();