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107 lines
3.2 KiB
JavaScript
107 lines
3.2 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.linuxList = void 0;
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const child_process_1 = require("child_process");
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const parser_readline_1 = require("@serialport/parser-readline");
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// get only serial port names
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function checkPathOfDevice(path) {
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return /(tty(S|WCH|ACM|USB|AMA|MFD|O|XRUSB)|rfcomm)/.test(path) && path;
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}
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function propName(name) {
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return {
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DEVNAME: 'path',
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ID_VENDOR_ENC: 'manufacturer',
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ID_SERIAL_SHORT: 'serialNumber',
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ID_VENDOR_ID: 'vendorId',
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ID_MODEL_ID: 'productId',
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DEVLINKS: 'pnpId',
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}[name.toUpperCase()];
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}
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function decodeHexEscape(str) {
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return str.replace(/\\x([a-fA-F0-9]{2})/g, (a, b) => {
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return String.fromCharCode(parseInt(b, 16));
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});
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}
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function propVal(name, val) {
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if (name === 'pnpId') {
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const match = val.match(/\/by-id\/([^\s]+)/);
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return (match === null || match === void 0 ? void 0 : match[1]) || undefined;
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}
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if (name === 'manufacturer') {
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return decodeHexEscape(val);
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}
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if (/^0x/.test(val)) {
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return val.substr(2);
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}
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return val;
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}
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function linuxList(spawnCmd = child_process_1.spawn) {
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const ports = [];
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const udevadm = spawnCmd('udevadm', ['info', '-e']);
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const lines = udevadm.stdout.pipe(new parser_readline_1.ReadlineParser());
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let skipPort = false;
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let port = {
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path: '',
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manufacturer: undefined,
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serialNumber: undefined,
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pnpId: undefined,
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locationId: undefined,
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vendorId: undefined,
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productId: undefined,
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};
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lines.on('data', (line) => {
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const lineType = line.slice(0, 1);
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const data = line.slice(3);
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// new port entry
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if (lineType === 'P') {
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port = {
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path: '',
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manufacturer: undefined,
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serialNumber: undefined,
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pnpId: undefined,
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locationId: undefined,
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vendorId: undefined,
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productId: undefined,
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};
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skipPort = false;
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return;
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}
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if (skipPort) {
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return;
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}
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// Check dev name and save port if it matches flag to skip the rest of the data if not
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if (lineType === 'N') {
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if (checkPathOfDevice(data)) {
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ports.push(port);
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}
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else {
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skipPort = true;
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}
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return;
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}
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// parse data about each port
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if (lineType === 'E') {
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const keyValue = data.match(/^(.+)=(.*)/);
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if (!keyValue) {
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return;
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}
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const key = propName(keyValue[1]);
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if (!key) {
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return;
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}
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port[key] = propVal(key, keyValue[2]);
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}
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});
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return new Promise((resolve, reject) => {
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udevadm.on('close', (code) => {
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if (code) {
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reject(new Error(`Error listing ports udevadm exited with error code: ${code}`));
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}
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});
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udevadm.on('error', reject);
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lines.on('error', reject);
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lines.on('finish', () => resolve(ports));
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});
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}
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exports.linuxList = linuxList;
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