module RDF::Util::UUID

Utilities for UUID handling.

@see en.wikipedia.org/wiki/Universally_unique_identifier

Public Class Methods

generate(options = {}) click to toggle source

Generates a UUID string.

This will make use of either the [UUID][] gem or the [UUIDTools][] gem, whichever of the two happens to be available.

[UUID]: rubygems.org/gems/uuid [UUIDTools]: rubygems.org/gems/uuidtools

@param [Hash{Symbol => Object}] options

any options to pass through to the underlying UUID library

@return [String] a UUID string @raise [LoadError] if no UUID library is available @see rubygems.org/gems/uuid @see rubygems.org/gems/uuidtools

# File lib/rdf/util/uuid.rb, line 22
def self.generate(options = {})
  begin
    require 'uuid'
    ::UUID.generate(options[:format] || :default)
  rescue LoadError => e
    begin
      require 'uuidtools'
      ::UUIDTools::UUID.random_create.hexdigest
    rescue LoadError => e
      raise LoadError.new("no such file to load -- uuid or uuidtools")
    end
  end
end