Crate eu_vat_id 

This crate provides validation of European Union VAT IDs, which are (basically, even though there are exceptions) the company registration numbers within the EU.

Please have a look at the function definitions for usage examples.

All countries which have Value Added Tax have VAT IDs, so not only European Union states. This crate works with EU VAT IDs only.

We implement and pass all tests for the sample VIES IDs: http://ec.europa.eu/taxation_customs/vies/faq.html#item_11

TODO

• Make regulax expressions more specific so they can check more state-specific things such are check digits.
• Add interface with VIES to provide, at which, an online verification of the existence of a VAT ID. This may be a stand-alone crate, as it will need to pull in a few dependencies and I’d prefer this crate to stay light.

Structs

VATID

Struct containing VAT ID and some information about it

Functions

check

Check if a VAT ID has a valid syntax. It’s an offline check, so it doesn’t guarantee the VAT ID exists.

check_by_state

Same as check, but expects a “local” VAT ID, with the state ISO code specified separately

parse

Parses a VAT ID to see if it has a valid syntax. It’s an offline check, so it doesn’t guarantee the VAT ID exists. In case of success the function returns a VATID struct, otherwise returns an Error.