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Contents
module Sjekksum
#
# Module for calculation and validation of Primitive checksums
#
# The primitive checksum is just a reduced digit sum (modulo 9).
#
module Primitive
extend self
extend Shared
#
# Calculates Primitive checksum
#
# @example
# Sjekksum::Primitive.of(232323) #=> 6
#
# @param number [Integer, String] number for which the checksum should be calculated
#
# @return [Integer] calculated checksum
def of number
raise_on_type_mismatch number
convert_to_int(number) % 9
end
alias_method :checksum, :of
#
# Primitive validation of provided number
#
# @example
# Sjekksum::Primitive.valid?(232323) #=> true
#
# @param number [Integer, String] number with included checksum
#
# @return [Boolean]
def valid? number
raise_on_type_mismatch number
num, check = split_number(number)
self.of(num) == check
end
alias_method :is_valid?, :valid?
#
# Transforms a number by appending the Primitive checksum digit
#
# @example
# Sjekksum::Primitive.convert(232323) #=> 2323236
#
# @param number [Integer, String] number without a checksum
#
# @return [Integer, String] final number including the checksum
def convert number
raise_on_type_mismatch number
typed_conversion number
end
alias_method :transform, :convert
end
end
Version data entries
6 entries across 6 versions & 1 rubygems