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Contents
# frozen_string_literal: true
module Facter
module Util
module Facts
class UnitConverter
class << self
def bytes_to_mb(value_in_bytes)
return unless value_in_bytes
value_in_bytes = value_in_bytes.to_i
(value_in_bytes / (1024.0 * 1024.0))
end
def hertz_to_human_readable(speed)
speed = speed.to_i
return if !speed || speed.zero?
validated_speed, metric_prefix = determine_metric_prefix(speed)
format('%<displayed_speed>.2f', displayed_speed: validated_speed.round(2)).to_s + ' ' + metric_prefix + 'Hz'
end
def bytes_to_human_readable(bytes)
return unless bytes
return bytes.to_s + ' bytes' if bytes < 1024
number, multiple = determine_exponent(bytes)
"#{pad_number(number)} #{multiple}"
end
private
def pad_number(number)
number = number.to_s
number << '0' if number.split('.').last.length == 1
number
end
def determine_exponent(bytes)
prefix = %w[KiB MiB GiB TiB PiB EiB]
exp = (Math.log2(bytes) / 10.0).floor
converted_number = (100.0 * (bytes / 1024.0**exp)).round / 100.0
if (converted_number - 1024.0).abs < Float::EPSILON
exp += 1
converted_number = 1.00
end
multiple = prefix[exp - 1] || 'bytes'
converted_number = bytes if multiple == 'bytes'
[converted_number, multiple]
end
def determine_metric_prefix(num)
metric_prefix = { 0 => '', 3 => 'k', 6 => 'M', 9 => 'G', 12 => 'T' }
power = Math.log10(num).floor
display_exponent = power - power % 3
coefficient = power.zero? ? num.to_f : num.fdiv(10**display_exponent)
[coefficient, metric_prefix[display_exponent]]
end
end
end
end
end
end
Version data entries
26 entries across 26 versions & 1 rubygems