test('resolve terminal encoding (environment)', async function () {
		process.env['VSCODE_CLI_ENCODING'] = 'utf16le';

		const enc = await encoding.resolveTerminalEncoding();
		assert.ok(encoding.encodingExists(enc));
		assert.equal(enc, 'utf16le');
	});

	test('resolve terminal encoding (environment)', function () {
		process.env['VSCODE_CLI_ENCODING'] = 'utf16le';

		return encoding.resolveTerminalEncoding().then(enc => {
			assert.ok(encoding.encodingExists(enc));
			assert.equal(enc, 'utf16le');
		});
	});

//.........这里部分代码省略.........
			// Windows workaround for https://github.com/nodejs/node/issues/11656
		}

		const readFromStdin = args._.some(a => a === '-');
		if (readFromStdin) {
			// remove the "-" argument when we read from stdin
			args._ = args._.filter(a => a !== '-');
			argv = argv.filter(a => a !== '-');
		}

		let stdinFilePath: string;
		if (stdinWithoutTty) {

			// Read from stdin: we require a single "-" argument to be passed in order to start reading from
			// stdin. We do this because there is no reliable way to find out if data is piped to stdin. Just
			// checking for stdin being connected to a TTY is not enough (https://github.com/Microsoft/vscode/issues/40351)
			if (args._.length === 0 && readFromStdin) {

				// prepare temp file to read stdin to
				stdinFilePath = paths.join(os.tmpdir(), `code-stdin-${Math.random().toString(36).replace(/[^a-z]+/g, '').substr(0, 3)}.txt`);

				// open tmp file for writing
				let stdinFileError: Error | undefined;
				let stdinFileStream: fs.WriteStream;
				try {
					stdinFileStream = fs.createWriteStream(stdinFilePath);
				} catch (error) {
					stdinFileError = error;
				}

				if (!stdinFileError) {

					// Pipe into tmp file using terminals encoding
					resolveTerminalEncoding(verbose).then(encoding => {
						const converterStream = iconv.decodeStream(encoding);
						process.stdin.pipe(converterStream).pipe(stdinFileStream);
					});

					// Make sure to open tmp file
					argv.push(stdinFilePath);

					// Enable --wait to get all data and ignore adding this to history
					argv.push('--wait');
					argv.push('--skip-add-to-recently-opened');
					args.wait = true;
				}

				if (verbose) {
					if (stdinFileError) {
						console.error(`Failed to create file to read via stdin: ${stdinFileError.toString()}`);
					} else {
						console.log(`Reading from stdin via: ${stdinFilePath}`);
					}
				}
			}

			// If the user pipes data via stdin but forgot to add the "-" argument, help by printing a message
			// if we detect that data flows into via stdin after a certain timeout.
			else if (args._.length === 0) {
				processCallbacks.push(child => new Promise(c => {
					const dataListener = () => {
						if (isWindows) {
							console.log(`Run with '${product.applicationName} -' to read output from another program (e.g. 'echo Hello World | ${product.applicationName} -').`);
						} else {
							console.log(`Run with '${product.applicationName} -' to read from stdin (e.g. 'ps aux | grep code | ${product.applicationName} -').`);
						}

export async function main(argv: string[]): TPromise<any> {
	let args: ParsedArgs;

	try {
		args = parseCLIProcessArgv(argv);
	} catch (err) {
		console.error(err.message);
		return TPromise.as(null);
	}

	// Help
	if (args.help) {
		console.log(buildHelpMessage(product.nameLong, product.applicationName, pkg.version));
	}

	// Version Info
	else if (args.version) {
		console.log(`${pkg.version}\n${product.commit}\n${process.arch}`);
	}

	// Extensions Management
	else if (shouldSpawnCliProcess(args)) {
		const mainCli = new TPromise<IMainCli>(c => require(['vs/code/node/cliProcessMain'], c));
		return mainCli.then(cli => cli.main(args));
	}

	// Just Code
	else {
		const env = assign({}, process.env, {
			'VSCODE_CLI': '1', // this will signal Code that it was spawned from this module
			'ELECTRON_NO_ATTACH_CONSOLE': '1'
		});

		delete env['ELECTRON_RUN_AS_NODE'];

		const processCallbacks: ((child: ChildProcess) => Thenable<any>)[] = [];

		const verbose = args.verbose || args.status;
		if (verbose) {
			env['ELECTRON_ENABLE_LOGGING'] = '1';

			processCallbacks.push(child => {
				child.stdout.on('data', (data: Buffer) => console.log(data.toString('utf8').trim()));
				child.stderr.on('data', (data: Buffer) => console.log(data.toString('utf8').trim()));

				return new TPromise<void>(c => child.once('exit', () => c(null)));
			});
		}

		let stdinWithoutTty: boolean;
		try {
			stdinWithoutTty = !process.stdin.isTTY; // Via https://twitter.com/MylesBorins/status/782009479382626304
		} catch (error) {
			// Windows workaround for https://github.com/nodejs/node/issues/11656
		}

		let stdinFilePath: string;
		if (stdinWithoutTty) {

			// Read from stdin: we require a single "-" argument to be passed in order to start reading from
			// stdin. We do this because there is no reliable way to find out if data is piped to stdin. Just
			// checking for stdin being connected to a TTY is not enough (https://github.com/Microsoft/vscode/issues/40351)
			if (args._.length === 1 && args._[0] === '-') {

				// remove the "-" argument when we read from stdin
				args._ = [];
				argv = argv.filter(a => a !== '-');

				// prepare temp file to read stdin to
				stdinFilePath = paths.join(os.tmpdir(), `code-stdin-${Math.random().toString(36).replace(/[^a-z]+/g, '').substr(0, 3)}.txt`);

				// open tmp file for writing
				let stdinFileError: Error;
				let stdinFileStream: fs.WriteStream;
				try {
					stdinFileStream = fs.createWriteStream(stdinFilePath);
				} catch (error) {
					stdinFileError = error;
				}

				if (!stdinFileError) {

					// Pipe into tmp file using terminals encoding
					resolveTerminalEncoding(verbose).done(encoding => {
						const converterStream = iconv.decodeStream(encoding);
						process.stdin.pipe(converterStream).pipe(stdinFileStream);
					});

					// Make sure to open tmp file
					argv.push(stdinFilePath);

					// Enable --wait to get all data and ignore adding this to history
					argv.push('--wait');
					argv.push('--skip-add-to-recently-opened');
					args.wait = true;
				}

				if (verbose) {
					if (stdinFileError) {
						console.error(`Failed to create file to read via stdin: ${stdinFileError.toString()}`);
//.........这里部分代码省略.........