Module: CharacterSet::PredefinedSets

Included in:
CharacterSet, Pure
Defined in:
lib/character_set/predefined_sets.rb

Instance Method Summary collapse

Instance Method Details

#build_from_cps_file(path) ⇒ Object 



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# File 'lib/character_set/predefined_sets.rb', line 24

def build_from_cps_file(path)
  if defined?(Ractor) && Ractor.current != Ractor.main
    raise <<-EOS.gsub(/^ */, '')
      CharacterSet's predefined sets are lazy-loaded.
      Pre-load them to use them in Ractors. E.g.:

      CharacterSet.ascii # pre-load
      Ractor.new { CharacterSet.ascii.size }.take # => 128
      Ractor.new { 'abc'.keep_character_set(:ascii) }.take # => 'abc'
    EOS
  end

  File.readlines(path).inject(new) do |set, line|
    range_start, range_end = line.split(',')
    set.merge((range_start.to_i(16))..(range_end.to_i(16)))
  end
end