class ProgressBar::Calculators::Length

# File lib/ruby-progressbar/calculators/length.rb, line 8
def initialize(options = {})
  self.length_override = options[:length]
  self.output          = options[:output]
  self.current_length  = nil
end

# File lib/ruby-progressbar/calculators/length.rb, line 25
def calculate_length
  length_override || terminal_width || 80
end

# File lib/ruby-progressbar/calculators/length.rb, line 14
def length
  current_length || reset_length
end

# File lib/ruby-progressbar/calculators/length.rb, line 18
def length_changed?
  previous_length     = current_length
  self.current_length = calculate_length

  previous_length != current_length
end

# File lib/ruby-progressbar/calculators/length.rb, line 33
def length_override=(other)
  @length_override ||= ENV['RUBY_PROGRESS_BAR_LENGTH'] || other
  @length_override = @length_override.to_i if @length_override
end

# File lib/ruby-progressbar/calculators/length.rb, line 29
def reset_length
  self.current_length = calculate_length
end