dh_demo

index.js (7515B)

---

 const path = require('path');
 const childProcess = require('child_process');
 const {promises: fs, constants: fsConstants} = require('fs');
 const isWsl = require('is-wsl');
 const isDocker = require('is-docker');
 const defineLazyProperty = require('define-lazy-prop');
 
 // Path to included `xdg-open`.
 const localXdgOpenPath = path.join(__dirname, 'xdg-open');
 
 const {platform, arch} = process;
 
 /**
 Get the mount point for fixed drives in WSL.
 
 @inner
 @returns {string} The mount point.
 */
 const getWslDrivesMountPoint = (() => {
 	// Default value for "root" param
 	// according to https://docs.microsoft.com/en-us/windows/wsl/wsl-config
 	const defaultMountPoint = '/mnt/';
 
 	let mountPoint;
 
 	return async function () {
 		if (mountPoint) {
 			// Return memoized mount point value
 			return mountPoint;
 		}
 
 		const configFilePath = '/etc/wsl.conf';
 
 		let isConfigFileExists = false;
 		try {
 			await fs.access(configFilePath, fsConstants.F_OK);
 			isConfigFileExists = true;
 		} catch {}
 
 		if (!isConfigFileExists) {
 			return defaultMountPoint;
 		}
 
 		const configContent = await fs.readFile(configFilePath, {encoding: 'utf8'});
 		const configMountPoint = /(?<!#.*)root\s*=\s*(?<mountPoint>.*)/g.exec(configContent);
 
 		if (!configMountPoint) {
 			return defaultMountPoint;
 		}
 
 		mountPoint = configMountPoint.groups.mountPoint.trim();
 		mountPoint = mountPoint.endsWith('/') ? mountPoint : `${mountPoint}/`;
 
 		return mountPoint;
 	};
 })();
 
 const pTryEach = async (array, mapper) => {
 	let latestError;
 
 	for (const item of array) {
 		try {
 			return await mapper(item); // eslint-disable-line no-await-in-loop
 		} catch (error) {
 			latestError = error;
 		}
 	}
 
 	throw latestError;
 };
 
 const baseOpen = async options => {
 	options = {
 		wait: false,
 		background: false,
 		newInstance: false,
 		allowNonzeroExitCode: false,
 		...options
 	};
 
 	if (Array.isArray(options.app)) {
 		return pTryEach(options.app, singleApp => baseOpen({
 			...options,
 			app: singleApp
 		}));
 	}
 
 	let {name: app, arguments: appArguments = []} = options.app || {};
 	appArguments = [...appArguments];
 
 	if (Array.isArray(app)) {
 		return pTryEach(app, appName => baseOpen({
 			...options,
 			app: {
 				name: appName,
 				arguments: appArguments
 			}
 		}));
 	}
 
 	let command;
 	const cliArguments = [];
 	const childProcessOptions = {};
 
 	if (platform === 'darwin') {
 		command = 'open';
 
 		if (options.wait) {
 			cliArguments.push('--wait-apps');
 		}
 
 		if (options.background) {
 			cliArguments.push('--background');
 		}
 
 		if (options.newInstance) {
 			cliArguments.push('--new');
 		}
 
 		if (app) {
 			cliArguments.push('-a', app);
 		}
 	} else if (platform === 'win32' || (isWsl && !isDocker())) {
 		const mountPoint = await getWslDrivesMountPoint();
 
 		command = isWsl ?
 			`${mountPoint}c/Windows/System32/WindowsPowerShell/v1.0/powershell.exe` :
 			`${process.env.SYSTEMROOT}\\System32\\WindowsPowerShell\\v1.0\\powershell`;
 
 		cliArguments.push(
 			'-NoProfile',
 			'-NonInteractive',
 			'–ExecutionPolicy',
 			'Bypass',
 			'-EncodedCommand'
 		);
 
 		if (!isWsl) {
 			childProcessOptions.windowsVerbatimArguments = true;
 		}
 
 		const encodedArguments = ['Start'];
 
 		if (options.wait) {
 			encodedArguments.push('-Wait');
 		}
 
 		if (app) {
 			// Double quote with double quotes to ensure the inner quotes are passed through.
 			// Inner quotes are delimited for PowerShell interpretation with backticks.
 			encodedArguments.push(`"\`"${app}\`""`, '-ArgumentList');
 			if (options.target) {
 				appArguments.unshift(options.target);
 			}
 		} else if (options.target) {
 			encodedArguments.push(`"${options.target}"`);
 		}
 
 		if (appArguments.length > 0) {
 			appArguments = appArguments.map(arg => `"\`"${arg}\`""`);
 			encodedArguments.push(appArguments.join(','));
 		}
 
 		// Using Base64-encoded command, accepted by PowerShell, to allow special characters.
 		options.target = Buffer.from(encodedArguments.join(' '), 'utf16le').toString('base64');
 	} else {
 		if (app) {
 			command = app;
 		} else {
 			// When bundled by Webpack, there's no actual package file path and no local `xdg-open`.
 			const isBundled = !__dirname || __dirname === '/';
 
 			// Check if local `xdg-open` exists and is executable.
 			let exeLocalXdgOpen = false;
 			try {
 				await fs.access(localXdgOpenPath, fsConstants.X_OK);
 				exeLocalXdgOpen = true;
 			} catch {}
 
 			const useSystemXdgOpen = process.versions.electron ||
 				platform === 'android' || isBundled || !exeLocalXdgOpen;
 			command = useSystemXdgOpen ? 'xdg-open' : localXdgOpenPath;
 		}
 
 		if (appArguments.length > 0) {
 			cliArguments.push(...appArguments);
 		}
 
 		if (!options.wait) {
 			// `xdg-open` will block the process unless stdio is ignored
 			// and it's detached from the parent even if it's unref'd.
 			childProcessOptions.stdio = 'ignore';
 			childProcessOptions.detached = true;
 		}
 	}
 
 	if (options.target) {
 		cliArguments.push(options.target);
 	}
 
 	if (platform === 'darwin' && appArguments.length > 0) {
 		cliArguments.push('--args', ...appArguments);
 	}
 
 	const subprocess = childProcess.spawn(command, cliArguments, childProcessOptions);
 
 	if (options.wait) {
 		return new Promise((resolve, reject) => {
 			subprocess.once('error', reject);
 
 			subprocess.once('close', exitCode => {
 				if (options.allowNonzeroExitCode && exitCode > 0) {
 					reject(new Error(`Exited with code ${exitCode}`));
 					return;
 				}
 
 				resolve(subprocess);
 			});
 		});
 	}
 
 	subprocess.unref();
 
 	return subprocess;
 };
 
 const open = (target, options) => {
 	if (typeof target !== 'string') {
 		throw new TypeError('Expected a `target`');
 	}
 
 	return baseOpen({
 		...options,
 		target
 	});
 };
 
 const openApp = (name, options) => {
 	if (typeof name !== 'string') {
 		throw new TypeError('Expected a `name`');
 	}
 
 	const {arguments: appArguments = []} = options || {};
 	if (appArguments !== undefined && appArguments !== null && !Array.isArray(appArguments)) {
 		throw new TypeError('Expected `appArguments` as Array type');
 	}
 
 	return baseOpen({
 		...options,
 		app: {
 			name,
 			arguments: appArguments
 		}
 	});
 };
 
 function detectArchBinary(binary) {
 	if (typeof binary === 'string' || Array.isArray(binary)) {
 		return binary;
 	}
 
 	const {[arch]: archBinary} = binary;
 
 	if (!archBinary) {
 		throw new Error(`${arch} is not supported`);
 	}
 
 	return archBinary;
 }
 
 function detectPlatformBinary({[platform]: platformBinary}, {wsl}) {
 	if (wsl && isWsl) {
 		return detectArchBinary(wsl);
 	}
 
 	if (!platformBinary) {
 		throw new Error(`${platform} is not supported`);
 	}
 
 	return detectArchBinary(platformBinary);
 }
 
 const apps = {};
 
 defineLazyProperty(apps, 'chrome', () => detectPlatformBinary({
 	darwin: 'google chrome',
 	win32: 'chrome',
 	linux: ['google-chrome', 'google-chrome-stable', 'chromium']
 }, {
 	wsl: {
 		ia32: '/mnt/c/Program Files (x86)/Google/Chrome/Application/chrome.exe',
 		x64: ['/mnt/c/Program Files/Google/Chrome/Application/chrome.exe', '/mnt/c/Program Files (x86)/Google/Chrome/Application/chrome.exe']
 	}
 }));
 
 defineLazyProperty(apps, 'firefox', () => detectPlatformBinary({
 	darwin: 'firefox',
 	win32: 'C:\\Program Files\\Mozilla Firefox\\firefox.exe',
 	linux: 'firefox'
 }, {
 	wsl: '/mnt/c/Program Files/Mozilla Firefox/firefox.exe'
 }));
 
 defineLazyProperty(apps, 'edge', () => detectPlatformBinary({
 	darwin: 'microsoft edge',
 	win32: 'msedge',
 	linux: ['microsoft-edge', 'microsoft-edge-dev']
 }, {
 	wsl: '/mnt/c/Program Files (x86)/Microsoft/Edge/Application/msedge.exe'
 }));
 
 open.apps = apps;
 open.openApp = openApp;
 
 module.exports = open;