Class: Basic101::InputReader

Inherits:
Object
  • Object
show all
Defined in:
lib/basic101/input_reader.rb

Instance Method Summary collapse

Constructor Details

#initialize(input) ⇒ InputReader

Returns a new instance of InputReader.



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# File 'lib/basic101/input_reader.rb', line 7

def initialize(input)
  line = input.read_line
  line += ',' unless line.empty?
  line += EOS
  @columns = line.parse_csv
rescue CSV::MalformedCSVError
  raise BadInputFormatError, 'Invalid format'
end

Instance Method Details

#read_numeric ⇒ Object 



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# File 'lib/basic101/input_reader.rb', line 26

def read_numeric
  column = next_column
  unless column =~ /^[+-]?\d+/
    raise BadInputFormatError, "Not numeric: #{column.inspect}"
  end
  column.to_f
end

#read_string ⇒ Object 



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# File 'lib/basic101/input_reader.rb', line 16

def read_string
  end_of_input_error if @columns.empty?
  value = @columns.shift
  if value == EOS
    ''
  else
    value || ''
  end
end