Module: Rex::Parser::GraphML

Defined in:
lib/rex/parser/graphml.rb

Overview

A partial implementation of the GraphML specification for loading structured data from an XML file. Notable missing components include GraphML parse meta-data (XML attributes with the “parse” prefix), hyperedges and ports. See: graphml.graphdrawing.org/

Defined Under Namespace

Modules: Element, Error Classes: AttributeContainer, Document, MetaAttribute

Class Method Summary collapse

Class Method Details

.convert_attribute(attr_type, value) ⇒ Object

Convert a GraphML value string into a Ruby value depending on the specified type. Values of int and long will be converted to Ruby integer, while float and double values will be converted to floats. For booleans, values that are either blank or “false” (case-insensitive) will evaluate to Ruby’s false, while everything else will be true.

Parameters:

  • attr_type (Symbol) —

    The type of the attribute, one of either boolean, int, long, float, double or string.

  • value (String) —

    The value to convert into a native Ruby data type.



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# File 'lib/rex/parser/graphml.rb', line 30

def self.convert_attribute(attr_type, value)
  case attr_type
  when :boolean
    value.strip!
    if value.blank?
      value = false
    else
      value = value.downcase != 'false'
    end
  when :int, :long
    value = Integer(value)
  when :float, :double
    value = Float(value)
  when :string # rubocop:disable Lint/EmptyWhen
  else
    raise ArgumentError, 'Unsupported attribute type: ' + attr_type.to_s
  end

  value
end

.from_file(file_path) ⇒ Rex::Parser::GraphML::Element::GraphML

Load the contents of a GraphML file by parsing it with Nokogiri and returning the top level GraphML structure.

Parameters:

  • file_path (String) —

    The file path to load the data from.

Returns:



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# File 'lib/rex/parser/graphml.rb', line 17

def self.from_file(file_path)
  parser = Nokogiri::XML::SAX::Parser.new(Document.new)
  parser.parse(File.read(file_path, mode: 'rb'))
  parser.document.graphml
end