Sha256: 5721a7da44869b869f51e302eaa90f72ca8ca3ce7b6bec130b4e474e18f7ea15
Contents?: true
Size: 1.66 KB
Versions: 12
Compression:
Stored size: 1.66 KB
Contents
# frozen_string_literal: true
module Ibandit
module CheckDigit
ITALIAN_ODD_MAPPING = {
"A" => 1, "B" => 0, "C" => 5, "D" => 7, "E" => 9, "F" => 13,
"G" => 15, "H" => 17, "I" => 19, "J" => 21, "K" => 2, "L" => 4,
"M" => 18, "N" => 20, "O" => 11, "P" => 3, "Q" => 6, "R" => 8,
"S" => 12, "T" => 14, "U" => 16, "V" => 10, "W" => 22, "X" => 25,
"Y" => 24, "Z" => 23, "0" => 1, "1" => 0, "2" => 5, "3" => 7,
"4" => 9, "5" => 13, "6" => 15, "7" => 17, "8" => 19, "9" => 21
}.freeze
def self.iban(country_code, bban)
chars = bban + country_code + "00"
digits = chars.bytes.map do |byte|
case byte
when 48..57 then byte.chr # 0..9
when 65..90 then (byte - 55).to_s # A..Z
else
raise InvalidCharacterError,
"Unexpected non-alphanumeric character '#{byte.chr}'"
end
end
remainder = digits.join.to_i % 97
sprintf("%<check_digit>02d", check_digit: 98 - remainder)
end
def self.italian(string)
scaled_values = string.chars.map.with_index do |char, index|
if index.even?
if ITALIAN_ODD_MAPPING.include?(char)
ITALIAN_ODD_MAPPING[char]
else
raise InvalidCharacterError,
"Unexpected character '#{char}'"
end
else
case char.ord
when 48..57 then char.to_i # 0..9
when 65..90 then char.ord - 65 # A..Z
else
raise InvalidCharacterError,
"Unexpected character '#{char}'"
end
end
end
(scaled_values.sum % 26 + 65).chr
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems