shift_software_adp_vin_decode

VIN validation, parsing, and extraction for Dart and Flutter. Pure Dart — no platform channels, no plugins, works everywhere Dart runs.

Install

dependencies:
  shift_software_adp_vin_decode: ^0.0.2

Or straight from the repo:

dependencies:
  shift_software_adp_vin_decode:
    git:
      url: https://github.com/ShiftSoftware/ADP.VINDecode
      path: dart

dart pub get

Usage

A single import brings in VIN, Validator, VINExtractor, and VINExtractionOptions:

import 'package:shift_software_adp_vin_decode/shift_software_adp_vin_decode.dart';

Versions before 0.0.2 had no library entry point and required importing package:shift_software_adp_vin_decode/src/… directly. Those paths still resolve, but use the import above — src/ is private and may be reorganized without a major version bump.

Validate

Validator.validateCheckDigit('19XFB2F57EE209415'); // true

Input must already be uppercase — Validator does not normalize.

Parse

tryParse returns null on an invalid VIN; parse throws ArgumentError. Both accept mixed case.

final vin = VIN.tryParse('19xfB2F57Ee209415');

if (vin != null) {
  print(vin.wmi); // 19X
  print(vin.vds); // FB2F57
  print(vin.cd);  // E
  print(vin.vis); // EE209415
}

final parsed = VIN.parse('19XFB2F57EE209415'); // throws ArgumentError if invalid

VIN has a private constructor — an instance always holds a VIN that passed validation.

Equality

== and hashCode are case-insensitive, so VIN works as a Map key or in a Set. toString() returns the uppercased VIN.

final a = VIN.parse('19XFB2F57EE209415');
final b = VIN.parse('19xfb2f57ee209415');

a == b;                  // true
print('VIN: $a');        // VIN: 19XFB2F57EE209415

Extract from text

Three entry points, all returning a Set<VIN>:

// Single string
VINExtractor.findVINsFromString('VIN: 1GKEK63U83J235900 (Brand Name)');
// {1GKEK63U83J235900}

// List of strings — e.g. lines from a document
VINExtractor.findVINs([
  'Engine Size: 4.0 L',
  'VIN: 1FDKF37GXVEB34368 - 2025-03-26',
  'Brand: Some Brand',
]);
// {1FDKF37GXVEB34368}

A multi-line string passed as one item works the same way — newlines act as separators like any other non-VIN character.

Extraction options

// Single string
VINExtractor.findVINsFromString(
  '3FAFP 3136YR25 9819',
  options: VINExtractionOptions(removeWhiteSpace: true),
);
// {3FAFP3136YR259819}

// List of strings
VINExtractor.findVINsWithOptions(
  VINExtractionOptions(mutateSpecialCharacters: true),
  ['IGCHK236O8F181Q70'],
);
// {1GCHK23608F181070}   (empty without the option)
Option Effect
removeWhiteSpace Strips spaces before scanning — recovers VINs split by line wrapping or OCR.
mutateSpecialCharacters Rewrites I → 1, O → 0, Q → 0 — characters a VIN can never legally contain.

False positives

Extraction validates the check digit and nothing else, so a 17-character window straddling two adjacent VINs can pass:

VINExtractor.findVINsFromString(
  'KKJ9485N1AA08A15N7329651FMCU9G99FUA05110113948LJH').length;   // 4
VINExtractor.findVINsFromString(
  'KKJ948 5N1AA08A15N7329651FMCU9G99FUA05110 113948LJH').length; // 2

Preserve the separators in your source text where you can.

Development

cd dart
dart pub get
dart test
dart test --plain-name "02. Components"
dart analyze
dart format .

SDK constraint: >=2.15.0 <4.0.0. Lints: package:lints/recommended.yaml.

License

Apache License 2.0.

Libraries

shift_software_adp_vin_decode
VIN validation, parsing, and extraction.