###COMMON NUMBERS

Common Numbers are numbers verfied with Luhn Algoritm like ISBN, VIN

common_numbers gem simple verify this numbers. In first version gem is focused on Polish numbers like:

• PESEL - (Polish ID Number)
• NIP - (Polish Taxation Identification Number)
• REGON - (Polish Company Identification Number)

but in near future will validate also:

• ISBN
• EAN
• VIN

maybe something else :)

###Instalation:

gem install common_numbers

###Usage:

All numbers are in module CommonNumbers and have simple method valid?

require 'common_numbers'

CommonNumbers::Polish::Nip.new(nip_number).valid?
CommonNumbers::Polish::Pesel.new(pesel_number).valid?
CommonNumbers::Polish::Regon.new(regon_number).valid?

###Valid numbers:

####NIP

NIP is valid when has 11 digits witn optional '-' between

1234563218
123-456-32-18
123-45-63-218

are valid numbers

In international notation NIP has country code as first two signs, and:

PL1234563218
PL123-456-32-18
PL123-45-63-218

are also valid.

####PESEL

Pesel's valid format is 11 digits, no other signs

####REGON

Regon has two options, first 9 digits for small companies and 14 digits with companies with regional offices.

Both are validated.

Copyright (c) 2011 Mariusz Nosiński, released under the MIT license