fix(windows): Parse more types of pnpIds (#1288)

This should give us more serial numbers on windows.

fixes #1220

Author: reconbot

lib/bindings/win32-sn-parser.js

@@ -0,0 +1,20 @@
+'use strict';
+
+const PARSERS = [
+  /USB\\(?:.+)\\(.+)/,
+  /FTDIBUS\\(?:.+)\+(.+?)A?\\.+/
+];
+
+module.exports = function(pnpId) {
+  if (!pnpId) {
+    return null;
+  }
+  for (let index = 0; index < PARSERS.length; index++) {
+    const parser = PARSERS[index];
+    const sn = pnpId.match(parser);
+    if (sn) {
+      return sn[1];
+    }
+  }
+  return null;
+};

lib/bindings/win32.js

@@ -2,16 +2,18 @@
 const binding = require('bindings')('serialport.node');
 const BaseBinding = require('./base');
 const promisify = require('../util').promisify;
+const serialNumParser = require('./win32-sn-parser');
 
 class WindowsBinding extends BaseBinding {
   static list() {
     return promisify(binding.list)().then(ports => {
       // Grab the serial number from the pnp id
       ports.forEach(port => {
         if (port.pnpId) {
-          const parts = port.pnpId.match(/USB\\(.+)\\(.+)/);
-          if (!parts) { return }
-          port.serialNumber = parts.pop();
+          const serialNumber = serialNumParser(port.pnpId);
+          if (serialNumber) {
+            port.serialNumber = serialNumber;
+          }
         }
       });
       return ports;

test/bindings-win32-sn-parser.js

@@ -0,0 +1,40 @@
+'use strict';
+
+const serialNumParser = require('../lib/bindings/win32-sn-parser');
+
+const devices = {
+  'FTDI Device': {
+    pnpId: 'FTDIBUS\\VID_0403+PID_6015+DO004ZB7A\\0000',
+    serialNumber: 'DO004ZB7'
+  },
+  'Arduino Mega': {
+    pnpId: 'USB\\VID_2341&PID_0042\\85531303630351C081D2',
+    serialNumber: '85531303630351C081D2'
+  },
+  'Atlas Scientific EZO-RGB Sensor': {
+    pnpId: 'FTDIBUS\\VID_0403+PID_6015+DJ1XJE67A\\0000',
+    serialNumber: 'DJ1XJE67'
+  },
+  'Gearmo FTDI2-LED USB RS-232 Serial Adapter': {
+    pnpId: 'FTDIBUS\\VID_0403+PID_6001+AL1WHZWFA\\0000',
+    serialNumber: 'AL1WHZWF'
+  },
+  'Arducam Nano V3.0 (Arduino Nano with FTDI)': {
+    pnpId: 'FTDIBUS\\VID_0403+PID_6001+A51MAMMEA\\0000',
+    serialNumber: 'A51MAMME'
+  },
+  'Pretend Device with an unknown pnp id': {
+    pnpId: 'WATEVER\\Whoever\\However!',
+    serialNumber: null
+  }
+};
+
+describe('serialNumParser', () => {
+  Object.keys(devices).forEach(device => {
+    it(`parses pnp id for ${device}`, () => {
+      const pnpId = devices[device].pnpId;
+      const serialNumber = devices[device].serialNumber;
+      assert.equal(serialNumParser(pnpId), serialNumber);
+    });
+  });
+});