NAME

Graph::Reader::TGF::CSV - Perl class for reading a graph from TGF format with CSV labeling.

SYNOPSIS

 use Graph::Reader::TGF::CSV;

 my $obj = Graph::Reader::TGF::CSV->new;
 my $graph = $obj->read_graph($tgf_csv_file);

METHODS

new()

 Constructor.
 This doesn't take any arguments.
 Returns Graph::Reader::TGF::CSV object.

read_graph($tgf_csv_file)

 Read a graph from the specified file.
 The argument can either be a filename, or a filehandle for a previously opened file.
 Returns Graph object.

TGF WITH CSV LABELING FILE FORMAT

 TGF = Trivial Graph Format
 TGF file format is described on L<English Wikipedia - Trivial Graph Format|https://en.wikipedia.org/wiki/Trivial_Graph_Format>
 Example with CSV labeling:
 1 label=First node,color=red
 2 label=Second node,color=cyan
 #
 1 2 label=Edge between the two,color=green

ERRORS

 new():
         Cannot create Text::CSV object.
                 Error: %s
         Cannot parse edge label.
                 Error: %s
                 String: %s
         Cannot parse vertex label.
                 Error: %s
                 String: %s

EXAMPLE

 use strict;
 use warnings;

 use Graph::Reader::TGF::CSV;
 use IO::Barf qw(barf);
 use File::Temp qw(tempfile);

 # Example data.
 my $data = <<'END';
 1 label=First node,green=red
 2 label=Second node,green=cyan
 #
 1 2 label=Edge between the two,color=green
 END

 # Temporary file.
 my (undef, $tempfile) = tempfile();

 # Save data to temp file.
 barf($tempfile, $data);

 # Reader object.
 my $obj = Graph::Reader::TGF->new;

 # Get graph from file.
 my $g = $obj->read_graph($tempfile);

 # Print to output.
 print $g."\n";

 # Clean temporary file.
 unlink $tempfile;

 # Output:
 # 1-2

DEPENDENCIES

Error::Pure, Graph::Reader::TGF, Text::CSV.

SEE ALSO

Graph::Reader

base class for Graph file format readers

Task::Graph::Reader

Install the Graph::Reader modules.

REPOSITORY

https://github.com/michal-josef-spacek/Graph-Reader-TGF-CSV

AUTHOR

Michal Josef Špaček mailto:skim@cpan.org

http://skim.cz

LICENSE AND COPYRIGHT

© 2014-2023 Michal Josef Špaček

BSD 2-Clause License

VERSION

0.03