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# frozen_string_literal: true
module ActiveSupport
module NumberHelper
class NumberToHumanSizeConverter < NumberConverter #:nodoc:
STORAGE_UNITS = [:byte, :kb, :mb, :gb, :tb, :pb, :eb]
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".freeze, number_to_format).gsub("%u".freeze, 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
1024
end
end
end
end
Version data entries
49 entries across 49 versions & 8 rubygems