Method: Opener::Coreferences::Base#args

Defined in:
lib/opener/coreferences/base.rb,
lib/opener/coreferences/base.rb

#args ⇒ Array (readonly)

Returns:

  • (Array) 


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# File 'lib/opener/coreferences/base.rb', line 16

class Base
  attr_reader :args, :options

  ##
  # Returns the default language to use.
  #
  # @return [String]
  #
  DEFAULT_LANGUAGE = 'en'.freeze

  ##
  # @param [Hash] options
  #
  # @option options [Array] :args The commandline arguments to pass to the
  #  underlying Java code.
  #
  def initialize(options = {})

    @args    = options.delete(:args) || []
    @options = options
  end

  ##
  # Returns a String containing the command used to execute the kernel.
  #
  # @return [String]
  #
  def command
    return "#{adjust_python_path} python -E -m #{kernel} #{args.join(' ')}"
  end

  ##
  # Runs the command and returns the output of STDOUT, STDERR and the
  # process information.
  #
  # @param [String] input The input to process.
  # @return [Array]
  #
  def run(input)
    @args << ["--language #{language(input)}"]
    Dir.chdir(core_dir) do
      capture(input)
    end
  end

  ##
  # Runs the command and takes care of error handling/aborting based on the
  # output.
  #
  # @see #run
  #
  def run!(input)
    stdout, stderr, process = run(input)

    if process.success?
      puts stdout

      STDERR.puts(stderr) unless stderr.empty?
    else
      abort stderr
    end
  end

  protected
  ##
  # @return [String]
  #
  def adjust_python_path
    site_packages =  File.join(core_dir, 'site-packages')
    "env PYTHONPATH=#{site_packages}:$PYTHONPATH"
  end

  def capture(input)
    Open3.popen3(*command.split(" ")) {|i, o, e, t|
      out_reader = Thread.new { o.read }
      err_reader = Thread.new { e.read }
      i.write input
      i.close
      [out_reader.value, err_reader.value, t.value]
    }
  end

  ##
  # @return [String]
  #
  def core_dir
    return File.expand_path('../../../../core', __FILE__)
  end

  ##
  # @return [String]
  #
  def kernel
    return 'corefgraph.process.file'
  end

  ##
  # @return the language from the KAF
  #
  def language(input)
    document = Nokogiri::XML(input)
    language = document.at('KAF').attr('xml:lang')
    return language
  end
end