code-scanner-driver

A lightweight Rust driver for barcode scanners and keyboard-emulated input, featuring:

• GTIN validation (GTIN-8/12/13/14)
• Async streaming using Tokio
• Burst detection for grouping fast keystrokes into scan events
• Cross-platform global keyboard listener via rdev
• Supports all USB/HID scanners that behave like a keyboard

Features

• Scanner input detection
  Groups rapid keystrokes into a single scan event.

• GTIN validation
  Checks GTIN-8 / GTIN-12 / GTIN-13 / GTIN-14 via checksum.

• Async stream API
  Uses tokio_stream for ergonomic event consumption.

• Global keyboard hook
  Powered by rdev, works across platforms.

Installation

Add to your Cargo.toml:

[dependencies]
code-scanner-driver = "0.1"

Quick Start

use code_scanner_driver::ScannerStream;
use tokio_stream::StreamExt;

#[tokio::main]
async fn main() {
  let mut stream = ScannerStream::new().unwrap();
  println!("Listening for scans...");

  while let Some(event) = stream.next().await {
    println!("Scan received: {:?}", event);
  }
}

GTIN Validation Example

use code_scanner_driver::validate_gtin;

let code = "5901234123457";

match validate_gtin(code) {
  Some(kind) => println!("{} is a valid {}", code, kind),
  None => println!("{} is NOT a valid GTIN", code),
}

Supported formats:

• GTIN-8

• GTIN-12

• GTIN-13

• GTIN-14