validate

Validates an Indian Driving License number.

Normalisation applied before validation (in order):

1. Trim leading/trailing whitespace

2. Strip all internal whitespace (replace(Regex("\\s"), ""))

3. Strip all hyphens (replace("-", "")) — hyphens are the primary separator in Digilocker DL strings

4. Uppercase all characters

After normalisation, checks are applied in this order — first failing check wins:

• InvalidReason.EMPTY if the result is blank

• InvalidReason.WRONG_LENGTH if normalised length is not in {14, 15}

• InvalidReason.INVALID_FORMAT if the string does not match ^[A-Z]{2}[0-9]{1,2}[0-9]{11}$

• InvalidReason.INVALID_PREFIX if the 2-letter state code is not in the 38-entry valid set

Never throws. Returns ValidationResult.Invalid for all invalid inputs.

Pre-2013 DL formats are not supported — they will return InvalidReason.WRONG_LENGTH or InvalidReason.INVALID_FORMAT. See the class-level KDoc for details (R4 documented limitation).

Parameters

Samples

check(
    DL.validate("MH0120230012345") is ValidationResult.Valid ||
        DL.validate("MH0120230012345") is ValidationResult.Invalid,
)