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