Gusex.Validators.Nip (gusex v1.3.0)

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Module for handling Polish NIP (Tax Identification Number) validation. This module provides functions to validate NIP numbers according to the official rules. NIP is a 10-digit number where the last digit is a checksum calculated from the first nine digits. The checksum is calculated using a specific set of factors applied to the first nine digits.

Summary

Functions

normalise(nip)

Strips common separators (spaces, hyphens, dashes) from a NIP string, returning the digits-only form.

valid?(nip)

Validates a NIP number. Accepts a string representation of the NIP. Returns true if valid, false otherwise.

Functions

normalise(nip)

@spec normalise(String.t()) :: String.t()

Strips common separators (spaces, hyphens, dashes) from a NIP string, returning the digits-only form.

valid?(nip)

@spec valid?(String.t()) :: boolean()

Validates a NIP number. Accepts a string representation of the NIP. Returns true if valid, false otherwise.