Module: Lisbn::Ranges

Defined in:
lib/lisbn/ranges.rb

Class Method Summary collapse

Class Method Details

.save_to_yaml! ⇒ Object 



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# File 'lib/lisbn/ranges.rb', line 25

def self.save_to_yaml!
  File.open(File.dirname(__FILE__) + "/../../data/ranges.yml", "w") do |f|
    f.write(to_yaml)
  end
end

.to_yaml ⇒ Object 



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# File 'lib/lisbn/ranges.rb', line 3

def self.to_yaml
  xml = Nori.new.parse(
      File.read(File.dirname(__FILE__) + '/../../data/RangeMessage.xml')
  )

  ranges = xml["ISBNRangeMessage"]["RegistrationGroups"]["Group"]

  hash = Array(ranges).flatten.inject({}) do |memo, group|
    prefix = group["Prefix"].gsub(/-/, '').to_s
    ranges = Array(group["Rules"]["Rule"]).flatten.map do |rule|
      length = rule["Length"].to_i
      next unless length > 0

      {:range => Range.new(*rule["Range"].split("-").map {|r| r[0..(length - 1)].to_i }), :length => length}
    end.compact

    memo.update(prefix => ranges)
  end

  YAML::dump(hash)
end