Class: ChRad::InputManager

Inherits:
IOManager show all
Defined in:
lib/chrad/io_manager.rb

Instance Attribute Summary collapse

Attributes inherited from IOManager

#base, #digits, #mode, #separator, #stream

Instance Method Summary collapse

Methods inherited from IOManager

#alphabet, #alphabet=, #automagic_find_alphabet, #setup_base_digits!, #value_to_digit

Constructor Details

#initialize ⇒ InputManager

Returns a new instance of InputManager.



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# File 'lib/chrad/io_manager.rb', line 71

def initialize
  @base = DEFAULT_INPUT_BASE
  @stream = $stdin
  @force_stdin = false
end

Instance Attribute Details

#force_stdin ⇒ Object

Returns the value of attribute force_stdin.



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# File 'lib/chrad/io_manager.rb', line 69

def force_stdin
  @force_stdin
end

Instance Method Details

#name ⇒ Object 



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# File 'lib/chrad/io_manager.rb', line 77

def name
  'input'
end

#parse(str) ⇒ Object 



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# File 'lib/chrad/io_manager.rb', line 81

def parse(str)
  case mode
  when :alphabet
    str.reverse.each_char.map.with_index do |c, idx|
      value = digits.index(c)
      if value.nil?
        raise Error, "Input digit #{c.inspect} is not a valid input digit (expected: #{digits.join('')})"
      end
      value * (base ** idx)
    end.reduce(&:+)

  when :list
    digits = str.split(separator).reverse
    digits.map.with_index do |x,idx|
      x.to_i * (base ** idx)
    end.reduce(&:+)

  else
    raise Error, "Invalid mode #{mode.inspect}"
  end
end