Sha256: 55f0bdb9bf32b29758bd21360571782b2faae52f78ece8aab739fde35a489c26
Contents?: true
Size: 742 Bytes
Versions: 49
Compression:
Stored size: 742 Bytes
Contents
require "digest"
module Helper
class RrnHelper
class RrnNotValid < StandardError
end
VALID_RRN = "^(\\d{4}-){4}\\d{4}$".freeze
def self.normalise_rrn_format(rrn)
# Strip surrounding whitespace
rrn = rrn.strip
# Remove all hyphens
rrn = rrn.tr("-", "")
raise RrnNotValid unless rrn.length == 20
# Add a hyphen every four characters to give desired RRN format
rrn = rrn.scan(/.{1,4}/).join("-")
raise RrnNotValid unless Regexp.new(VALID_RRN).match(rrn)
rrn
end
def self.hash_rrn(rrn)
rrn_array = rrn.split("-")
rrn_array.unshift(rrn_array.last)
rrn_array << rrn_array[1]
Digest::SHA256.hexdigest rrn_array.join("-")
end
end
end
Version data entries
49 entries across 49 versions & 1 rubygems