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Contents
# frozen_string_literal: true
module Worldwide
module Currencies
include Enumerable
extend self
CURRENCIES_FILE_PATH = File.join(Worldwide::Paths::CLDR_ROOT, "locales", "en", "currencies.yml")
CURRENCY_CODES_FILE_PATH = File.join(Worldwide::Paths::OTHER_DATA_ROOT, "currency", "codes.yml")
def each(&block)
all_currencies.each(&block)
end
def all
all_currencies
end
# Convert ISO-4217 numeric-three code to ISO-4217 alpha-three code
# Returns nil if there is no such numeric code.
def alpha_code_for(numeric_code)
lookup_code = if numeric_code.is_a?(Integer)
numeric_code
else
numeric_code&.to_s&.to_i
end
numeric_three_to_alpha_three_db[lookup_code]&.to_s
end
# Convert ISO-4217 alpha-three code to ISO-4217 numeric-three code
# Note that we support some currencies (e.g. JEP) that are not recognized by ISO,
# and there is no numeric-three code for these currencies, so nil will be returned.
def numeric_code_for(alpha_code)
currency_codes.dig(alpha_code&.to_s&.upcase, "three_digit_code")&.to_i
end
private
def all_currencies
@all_currencies ||= begin
currencies = {}
YAML.load_file(CURRENCIES_FILE_PATH)["en"]["currencies"].map do |code, _name|
currencies[code] = Currency.new(code: code)
end.sort_by(&:currency_code)
end
end
def currency_codes
@currency_codes ||= YAML.safe_load(File.read(CURRENCY_CODES_FILE_PATH))
end
def map_alpha_three_to_numeric_three
currency_codes
end
def numeric_three_to_alpha_three_db
@map_numeric_three_to_alpha_three ||= currency_codes.to_h do |key, value|
[value["three_digit_code"].to_i, key.to_s.upcase.to_sym]
end
end
end
end
Version data entries
24 entries across 24 versions & 1 rubygems