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Contents
# frozen_string_literal: true
require "active_support/number_helper/number_converter"
module ActiveSupport
module NumberHelper
class NumberToRoundedConverter < NumberConverter # :nodoc:
self.namespace = :precision
self.validate_float = true
def convert
helper = RoundingHelper.new(options)
rounded_number = helper.round(number)
if precision = options[:precision]
if options[:significant] && precision > 0
digits = helper.digit_count(rounded_number)
precision -= digits
precision = 0 if precision < 0 # don't let it be negative
end
formatted_string =
if BigDecimal === rounded_number && rounded_number.finite?
s = rounded_number.to_s("F")
s << "0" * precision
a, b = s.split(".", 2)
a << "."
a << b[0, precision]
else
"%00.#{precision}f" % rounded_number
end
else
formatted_string = rounded_number
end
delimited_number = NumberToDelimitedConverter.convert(formatted_string, options)
format_number(delimited_number)
end
private
def strip_insignificant_zeros
options[:strip_insignificant_zeros]
end
def format_number(number)
if strip_insignificant_zeros
escaped_separator = Regexp.escape(options[:separator])
number.sub(/(#{escaped_separator})(\d*[1-9])?0+\z/, '\1\2').sub(/#{escaped_separator}\z/, "")
else
number
end
end
end
end
end
Version data entries
25 entries across 23 versions & 5 rubygems