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-rw-r--r--activesupport/lib/active_support/number_helper.rb329
1 files changed, 20 insertions, 309 deletions
diff --git a/activesupport/lib/active_support/number_helper.rb b/activesupport/lib/active_support/number_helper.rb
index e0151baa36..b169e3af01 100644
--- a/activesupport/lib/active_support/number_helper.rb
+++ b/activesupport/lib/active_support/number_helper.rb
@@ -1,115 +1,19 @@
-require 'active_support/core_ext/big_decimal/conversions'
-require 'active_support/core_ext/object/blank'
-require 'active_support/core_ext/hash/keys'
-require 'active_support/i18n'
-
module ActiveSupport
module NumberHelper
- extend self
-
- DEFAULTS = {
- # Used in number_to_delimited
- # These are also the defaults for 'currency', 'percentage', 'precision', and 'human'
- format: {
- # Sets the separator between the units, for more precision (e.g. 1.0 / 2.0 == 0.5)
- separator: ".",
- # Delimits thousands (e.g. 1,000,000 is a million) (always in groups of three)
- delimiter: ",",
- # Number of decimals, behind the separator (the number 1 with a precision of 2 gives: 1.00)
- precision: 3,
- # If set to true, precision will mean the number of significant digits instead
- # of the number of decimal digits (1234 with precision 2 becomes 1200, 1.23543 becomes 1.2)
- significant: false,
- # If set, the zeros after the decimal separator will always be stripped (eg.: 1.200 will be 1.2)
- strip_insignificant_zeros: false
- },
-
- # Used in number_to_currency
- currency: {
- format: {
- format: "%u%n",
- negative_format: "-%u%n",
- unit: "$",
- # These five are to override number.format and are optional
- separator: ".",
- delimiter: ",",
- precision: 2,
- significant: false,
- strip_insignificant_zeros: false
- }
- },
-
- # Used in number_to_percentage
- percentage: {
- format: {
- delimiter: "",
- format: "%n%"
- }
- },
-
- # Used in number_to_rounded
- precision: {
- format: {
- delimiter: ""
- }
- },
-
- # Used in number_to_human_size and number_to_human
- human: {
- format: {
- # These five are to override number.format and are optional
- delimiter: "",
- precision: 3,
- significant: true,
- strip_insignificant_zeros: true
- },
- # Used in number_to_human_size
- storage_units: {
- # Storage units output formatting.
- # %u is the storage unit, %n is the number (default: 2 MB)
- format: "%n %u",
- units: {
- byte: "Bytes",
- kb: "KB",
- mb: "MB",
- gb: "GB",
- tb: "TB"
- }
- },
- # Used in number_to_human
- decimal_units: {
- format: "%n %u",
- # Decimal units output formatting
- # By default we will only quantify some of the exponents
- # but the commented ones might be defined or overridden
- # by the user.
- units: {
- # femto: Quadrillionth
- # pico: Trillionth
- # nano: Billionth
- # micro: Millionth
- # mili: Thousandth
- # centi: Hundredth
- # deci: Tenth
- unit: "",
- # ten:
- # one: Ten
- # other: Tens
- # hundred: Hundred
- thousand: "Thousand",
- million: "Million",
- billion: "Billion",
- trillion: "Trillion",
- quadrillion: "Quadrillion"
- }
- }
- }
- }
+ extend ActiveSupport::Autoload
+
+ eager_autoload do
+ autoload :NumberConverter
+ autoload :NumberToRoundedConverter
+ autoload :NumberToDelimitedConverter
+ autoload :NumberToHumanConverter
+ autoload :NumberToHumanSizeConverter
+ autoload :NumberToPhoneConverter
+ autoload :NumberToCurrencyConverter
+ autoload :NumberToPercentageConverter
+ end
- DECIMAL_UNITS = { 0 => :unit, 1 => :ten, 2 => :hundred, 3 => :thousand, 6 => :million, 9 => :billion, 12 => :trillion, 15 => :quadrillion,
- -1 => :deci, -2 => :centi, -3 => :mili, -6 => :micro, -9 => :nano, -12 => :pico, -15 => :femto }
- INVERTED_DECIMAL_UNITS = DECIMAL_UNITS.invert
- STORAGE_UNITS = [:byte, :kb, :mb, :gb, :tb]
+ extend self
# Formats a +number+ into a US phone number (e.g., (555)
# 123-9876). You can customize the format in the +options+ hash.
@@ -137,27 +41,7 @@ module ActiveSupport
# number_to_phone(1235551234, country_code: 1, extension: 1343, delimiter: '.')
# # => +1.123.555.1234 x 1343
def number_to_phone(number, options = {})
- return unless number
- options = options.symbolize_keys
-
- number = number.to_s.strip
- area_code = options[:area_code]
- delimiter = options[:delimiter] || "-"
- extension = options[:extension]
- country_code = options[:country_code]
-
- if area_code
- number.gsub!(/(\d{1,3})(\d{3})(\d{4}$)/,"(\\1) \\2#{delimiter}\\3")
- else
- number.gsub!(/(\d{0,3})(\d{3})(\d{4})$/,"\\1#{delimiter}\\2#{delimiter}\\3")
- number.slice!(0, 1) if number.start_with?(delimiter) && !delimiter.blank?
- end
-
- str = ''
- str << "+#{country_code}#{delimiter}" unless country_code.blank?
- str << number
- str << " x #{extension}" unless extension.blank?
- str
+ NumberToPhoneConverter.convert(number, options)
end
# Formats a +number+ into a currency string (e.g., $13.65). You
@@ -199,25 +83,7 @@ module ActiveSupport
# number_to_currency(1234567890.50, unit: '&pound;', separator: ',', delimiter: '', format: '%n %u')
# # => 1234567890,50 &pound;
def number_to_currency(number, options = {})
- return unless number
- options = options.symbolize_keys
-
- currency = i18n_format_options(options[:locale], :currency)
- currency[:negative_format] ||= "-" + currency[:format] if currency[:format]
-
- defaults = default_format_options(:currency).merge!(currency)
- defaults[:negative_format] = "-" + options[:format] if options[:format]
- options = defaults.merge!(options)
-
- unit = options.delete(:unit)
- format = options.delete(:format)
-
- if number.to_f.phase != 0
- format = options.delete(:negative_format)
- number = number.respond_to?("abs") ? number.abs : number.sub(/^-/, '')
- end
-
- format.gsub('%n', self.number_to_rounded(number, options)).gsub('%u', unit)
+ NumberToCurrencyConverter.convert(number, options)
end
# Formats a +number+ as a percentage string (e.g., 65%). You can
@@ -253,14 +119,7 @@ module ActiveSupport
# number_to_percentage('98a') # => 98a%
# number_to_percentage(100, format: '%n %') # => 100 %
def number_to_percentage(number, options = {})
- return unless number
- options = options.symbolize_keys
-
- defaults = format_options(options[:locale], :percentage)
- options = defaults.merge!(options)
-
- format = options[:format] || "%n%"
- format.gsub('%n', self.number_to_rounded(number, options))
+ NumberToPercentageConverter.convert(number, options)
end
# Formats a +number+ with grouped thousands using +delimiter+
@@ -289,15 +148,7 @@ module ActiveSupport
# number_to_delimited(98765432.98, delimiter: ' ', separator: ',')
# # => 98 765 432,98
def number_to_delimited(number, options = {})
- options = options.symbolize_keys
-
- return number unless valid_float?(number)
-
- options = format_options(options[:locale]).merge!(options)
-
- parts = number.to_s.split('.')
- parts[0].gsub!(/(\d)(?=(\d\d\d)+(?!\d))/, "\\1#{options[:delimiter]}")
- parts.join(options[:separator])
+ NumberToDelimitedConverter.convert(number, options)
end
# Formats a +number+ with the specified level of
@@ -340,39 +191,7 @@ module ActiveSupport
# number_to_rounded(1111.2345, precision: 2, separator: ',', delimiter: '.')
# # => 1.111,23
def number_to_rounded(number, options = {})
- return number unless valid_float?(number)
- number = Float(number)
- options = options.symbolize_keys
-
- defaults = format_options(options[:locale], :precision)
- options = defaults.merge!(options)
-
- precision = options.delete :precision
- significant = options.delete :significant
- strip_insignificant_zeros = options.delete :strip_insignificant_zeros
-
- if significant && precision > 0
- if number == 0
- digits, rounded_number = 1, 0
- else
- digits = (Math.log10(number.abs) + 1).floor
- multiplier = 10 ** (digits - precision)
- rounded_number = (BigDecimal.new(number.to_s) / BigDecimal.new(multiplier.to_f.to_s)).round.to_f * multiplier
- digits = (Math.log10(rounded_number.abs) + 1).floor # After rounding, the number of digits may have changed
- end
- precision -= digits
- precision = 0 if precision < 0 # don't let it be negative
- else
- rounded_number = BigDecimal.new(number.to_s).round(precision).to_f
- rounded_number = rounded_number.abs if rounded_number.zero? # prevent showing negative zeros
- end
- formatted_number = self.number_to_delimited("%01.#{precision}f" % rounded_number, options)
- if strip_insignificant_zeros
- escaped_separator = Regexp.escape(options[:separator])
- formatted_number.sub(/(#{escaped_separator})(\d*[1-9])?0+\z/, '\1\2').sub(/#{escaped_separator}\z/, '')
- else
- formatted_number
- end
+ NumberToRoundedConverter.convert(number, options)
end
# Formats the bytes in +number+ into a more understandable
@@ -420,36 +239,7 @@ module ActiveSupport
# number_to_human_size(1234567890123, precision: 5) # => "1.1229 TB"
# number_to_human_size(524288000, precision: 5) # => "500 MB"
def number_to_human_size(number, options = {})
- options = options.symbolize_keys
-
- return number unless valid_float?(number)
- number = Float(number)
-
- defaults = format_options(options[:locale], :human)
- options = defaults.merge!(options)
-
- #for backwards compatibility with those that didn't add strip_insignificant_zeros to their locale files
- options[:strip_insignificant_zeros] = true if not options.key?(:strip_insignificant_zeros)
-
- storage_units_format = translate_number_value_with_default('human.storage_units.format', :locale => options[:locale], :raise => true)
-
- base = options[:prefix] == :si ? 1000 : 1024
-
- if number.to_i < base
- unit = translate_number_value_with_default('human.storage_units.units.byte', :locale => options[:locale], :count => number.to_i, :raise => true)
- storage_units_format.gsub(/%n/, number.to_i.to_s).gsub(/%u/, unit)
- else
- max_exp = STORAGE_UNITS.size - 1
- exponent = (Math.log(number) / Math.log(base)).to_i # Convert to base
- exponent = max_exp if exponent > max_exp # we need this to avoid overflow for the highest unit
- number /= base ** exponent
-
- unit_key = STORAGE_UNITS[exponent]
- unit = translate_number_value_with_default("human.storage_units.units.#{unit_key}", :locale => options[:locale], :count => number, :raise => true)
-
- formatted_number = self.number_to_rounded(number, options)
- storage_units_format.gsub(/%n/, formatted_number).gsub(/%u/, unit)
- end
+ NumberToHumanSizeConverter.convert(number, options)
end
# Pretty prints (formats and approximates) a number in a way it
@@ -550,86 +340,7 @@ module ActiveSupport
# number_to_human(1, units: :distance) # => "1 meter"
# number_to_human(0.34, units: :distance) # => "34 centimeters"
def number_to_human(number, options = {})
- options = options.symbolize_keys
-
- return number unless valid_float?(number)
- number = Float(number)
-
- defaults = format_options(options[:locale], :human)
- options = defaults.merge!(options)
-
- #for backwards compatibility with those that didn't add strip_insignificant_zeros to their locale files
- options[:strip_insignificant_zeros] = true if not options.key?(:strip_insignificant_zeros)
-
- units = options.delete :units
- unit_exponents = case units
- when Hash
- units
- when String, Symbol
- I18n.translate(:"#{units}", :locale => options[:locale], :raise => true)
- when nil
- translate_number_value_with_default("human.decimal_units.units", :locale => options[:locale], :raise => true)
- else
- raise ArgumentError, ":units must be a Hash or String translation scope."
- end.keys.map!{|e_name| INVERTED_DECIMAL_UNITS[e_name] }.sort_by!{|e| -e}
-
- number_exponent = number != 0 ? Math.log10(number.abs).floor : 0
- display_exponent = unit_exponents.find{ |e| number_exponent >= e } || 0
- number /= 10 ** display_exponent
-
- unit = case units
- when Hash
- units[DECIMAL_UNITS[display_exponent]] || ''
- when String, Symbol
- I18n.translate(:"#{units}.#{DECIMAL_UNITS[display_exponent]}", :locale => options[:locale], :count => number.to_i)
- else
- translate_number_value_with_default("human.decimal_units.units.#{DECIMAL_UNITS[display_exponent]}", :locale => options[:locale], :count => number.to_i)
- end
-
- decimal_format = options[:format] || translate_number_value_with_default('human.decimal_units.format', :locale => options[:locale])
- formatted_number = self.number_to_rounded(number, options)
- decimal_format.gsub(/%n/, formatted_number).gsub(/%u/, unit).strip
- end
-
- def self.private_module_and_instance_method(method_name) #:nodoc:
- private method_name
- private_class_method method_name
- end
- private_class_method :private_module_and_instance_method
-
- def format_options(locale, namespace = nil) #:nodoc:
- default_format_options(namespace).merge!(i18n_format_options(locale, namespace))
- end
- private_module_and_instance_method :format_options
-
- def default_format_options(namespace = nil) #:nodoc:
- options = DEFAULTS[:format].dup
- options.merge!(DEFAULTS[namespace][:format]) if namespace
- options
- end
- private_module_and_instance_method :default_format_options
-
- def i18n_format_options(locale, namespace = nil) #:nodoc:
- options = I18n.translate(:'number.format', locale: locale, default: {}).dup
- if namespace
- options.merge!(I18n.translate(:"number.#{namespace}.format", locale: locale, default: {}))
- end
- options
- end
- private_module_and_instance_method :i18n_format_options
-
- def translate_number_value_with_default(key, i18n_options = {}) #:nodoc:
- default = key.split('.').reduce(DEFAULTS) { |defaults, k| defaults[k.to_sym] }
-
- I18n.translate(key, { default: default, scope: :number }.merge!(i18n_options))
- end
- private_module_and_instance_method :translate_number_value_with_default
-
- def valid_float?(number) #:nodoc:
- Float(number)
- rescue ArgumentError, TypeError
- false
+ NumberToHumanConverter.convert(number, options)
end
- private_module_and_instance_method :valid_float?
end
end