SpeciesFileGroup/taxonworks

# urn:lsid:Orthoptera.speciesfile.org:TaxonName:1
#
#   • "URN"
#   • "LSID"
#   • authority identification
#   • namespace identification
#   • object identification
#   • optionally: revision identification. If revision field is omitted then the trailing colon is also omitted.
#
class Identifier::Global::Lsid < Identifier::Global
  validate :using_lsid_class

  def using_lsid_class
    unless identifier.nil?
      lsid = identifier.split(':')
      # this is a test of http://rubular.com/regexes/13295
      /SID=([\s\S]*?)LSID=([\s\S]*?)Auth=([\s\S]*)/ =~ identifier

      unless lsid.length.between?(5, 6)
        unless lsid[0].upcase == 'URN' and lsid[1].upcase == 'LSID'
          errors.add(:identifier, "'#{identifier}' is not a valid LSID.")
        end
      end
    end
  end
end