Module: FriendlyNumbers::NumberToHumanSize

Defined in:
lib/friendly_numbers/number_to_human_size.rb

Constant Summary collapse

DEFAULTS = 
{
  precision: 3,
  scales: %w(Bytes KB MB GB TB PB EB ZB YB)
}

Class Method Summary collapse

Class Method Details

.calculate_smallest_value_with_scale(value) ⇒ Object

:nodoc:



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# File 'lib/friendly_numbers/number_to_human_size.rb', line 19

def calculate_smallest_value_with_scale(value) # :nodoc:
  scale = 0
  while value >= 1024
    value /= 1024.0
    scale += 1
  end
  [value, scale]
end

.convert(bytes, options) ⇒ Object

:nodoc:



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# File 'lib/friendly_numbers/number_to_human_size.rb', line 10

def convert(bytes, options) # :nodoc:
  options = DEFAULTS.merge(options)

  value, scale = calculate_smallest_value_with_scale(bytes)
  precision = zero_precision_for_zero_remainder(value, options[:precision])

  format("%.#{precision}f %s", value, options[:scales][scale])
end

.zero_precision_for_zero_remainder(value, default_precision = 0) ⇒ Object

:nodoc:



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# File 'lib/friendly_numbers/number_to_human_size.rb', line 28

def zero_precision_for_zero_remainder(value, default_precision = 0) # :nodoc:
  if (value % 1).zero?
    0
  else
    default_precision
  end
end