Sha256: 5a2c9764587d130df94b79837f04f41ee40e129929d96d1655af729aa543b285
Contents?: true
Size: 1.46 KB
Versions: 8
Compression:
Stored size: 1.46 KB
Contents
module Ibandit
module CheckDigit
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
format('%02d', 98 - remainder)
end
def self.italian(string)
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
}
scaled_values = string.chars.map.with_index do |char, index|
if index.even?
odd_mapping[char]
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 non-alphanumeric character '#{char}'"
end
end
end
(scaled_values.inject(:+) % 26 + 65).chr
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems