man Graph::Reader::Dot (3): class for reading a Graph instance from Dot format

SYNOPSIS

use Graph::Reader::Dot;
use Graph;
$reader = Graph::Reader::Dot->new();
$graph = $reader->read_graph('mygraph.dot');

DESCRIPTION

Graph::Reader::Dot is a class for reading in a directed graph in the file format used by the dot tool (part of the AT+T graphviz package).

Graph::Reader::Dot is a subclass of Graph::Reader, which defines the generic interface for Graph reader classes.

METHODS AND CONFIGURATION

new()

Constructor - generate a new reader instance.

    $reader = Graph::Reader::Dot->new();

This doesn't take any arguments.

read_graph()

Read a graph from a file:

    $graph = $reader->read_graph( $file );

The $file argument can be either a filename or a filehandle of a previously opened file.

$Graph::Reader::Dot::UseNodeAttr

Controls, if implicit node attributes given by the dot directive "node[]" will be merged into (new) nodes. Setting it to 0 or "undef" (default) will not disable this feature. Setting it to any other value will enable this feature.

$Graph::Reader::Dot::UseEdgeAttr

Controls, if implicit edge attributes given by the dot directive "edge[]" will be merged into edges. Setting it to 0 or "undef" (default) will not disable this feature. Setting it to any other value will enable this feature.

RESTRICTIONS

Default (graph) attributes in subgraphs (i.e. inside "{}") are not processed.
Sub nodes as used by dot's "record" node shape are supported.
Undirected graphs will be treated as directed graphs. This means that the "--" edge operator works as the "->" edge operator.
Be aware that you are loosing scope information on writing back the graph.
Multiple "node[]" or "edge[]" statements in the same scope are not correctly supported.

AUTHOR

Mark A. Hillebrand <[email protected]>

COPYRIGHT

This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.