/usr/lib/ruby/vendor_ruby/active_support/number_helper/number_to_human_size_converter.rb is in ruby-activesupport 2:4.2.6-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 | module ActiveSupport
module NumberHelper
class NumberToHumanSizeConverter < NumberConverter #:nodoc:
STORAGE_UNITS = [:byte, :kb, :mb, :gb, :tb]
self.namespace = :human
self.validate_float = true
def convert
@number = Float(number)
# for backwards compatibility with those that didn't add strip_insignificant_zeros to their locale files
unless options.key?(:strip_insignificant_zeros)
options[:strip_insignificant_zeros] = true
end
if smaller_than_base?
number_to_format = number.to_i.to_s
else
human_size = number / (base ** exponent)
number_to_format = NumberToRoundedConverter.convert(human_size, options)
end
conversion_format.gsub(/%n/, number_to_format).gsub(/%u/, unit)
end
private
def conversion_format
translate_number_value_with_default('human.storage_units.format', :locale => options[:locale], :raise => true)
end
def unit
translate_number_value_with_default(storage_unit_key, :locale => options[:locale], :count => number.to_i, :raise => true)
end
def storage_unit_key
key_end = smaller_than_base? ? 'byte' : STORAGE_UNITS[exponent]
"human.storage_units.units.#{key_end}"
end
def exponent
max = STORAGE_UNITS.size - 1
exp = (Math.log(number) / Math.log(base)).to_i
exp = max if exp > max # avoid overflow for the highest unit
exp
end
def smaller_than_base?
number.to_i < base
end
def base
opts[:prefix] == :si ? 1000 : 1024
end
end
end
end
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