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main.js
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/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
//@ts-check
'use strict';
const perf = require('./vs/base/common/performance');
const lp = require('./vs/base/node/languagePacks');
perf.mark('main:started');
const path = require('path');
const fs = require('fs');
const os = require('os');
const bootstrap = require('./bootstrap');
const paths = require('./paths');
// @ts-ignore
const product = require('../product.json');
// @ts-ignore
const { app, protocol } = require('electron');
// Enable portable support
const portable = bootstrap.configurePortable();
// Enable ASAR support
bootstrap.enableASARSupport();
// Set userData path before app 'ready' event
const args = parseCLIArgs();
const userDataPath = getUserDataPath(args);
app.setPath('userData', userDataPath);
// Set logs path before app 'ready' event if running portable
// to ensure that no 'logs' folder is created on disk at a
// location outside of the portable directory
// (https://github.com/microsoft/vscode/issues/56651)
if (portable.isPortable) {
app.setAppLogsPath(path.join(userDataPath, 'logs'));
}
// Update cwd based on environment and platform
setCurrentWorkingDirectory();
// Register custom schemes with privileges
protocol.registerSchemesAsPrivileged([
{ scheme: 'vscode-resource', privileges: { secure: true, supportFetchAPI: true, corsEnabled: true } }
]);
// Global app listeners
registerListeners();
// Cached data
const nodeCachedDataDir = getNodeCachedDir();
// Configure static command line arguments
const argvConfig = configureCommandlineSwitchesSync(args);
/**
* Support user defined locale: load it early before app('ready')
* to have more things running in parallel.
*
* @type {Promise<import('./vs/base/node/languagePacks').NLSConfiguration>} nlsConfig | undefined
*/
let nlsConfigurationPromise = undefined;
const metaDataFile = path.join(__dirname, 'nls.metadata.json');
const locale = getUserDefinedLocale(argvConfig);
if (locale) {
nlsConfigurationPromise = lp.getNLSConfiguration(product.commit, userDataPath, metaDataFile, locale);
}
// Load our code once ready
app.once('ready', function () {
if (args['trace']) {
// @ts-ignore
const contentTracing = require('electron').contentTracing;
const traceOptions = {
categoryFilter: args['trace-category-filter'] || '*',
traceOptions: args['trace-options'] || 'record-until-full,enable-sampling'
};
contentTracing.startRecording(traceOptions).finally(() => onReady());
} else {
onReady();
}
});
/**
* Main startup routine
*
* @param {string | undefined} cachedDataDir
* @param {import('./vs/base/node/languagePacks').NLSConfiguration} nlsConfig
*/
function startup(cachedDataDir, nlsConfig) {
nlsConfig._languagePackSupport = true;
process.env['VSCODE_NLS_CONFIG'] = JSON.stringify(nlsConfig);
process.env['VSCODE_NODE_CACHED_DATA_DIR'] = cachedDataDir || '';
// Load main in AMD
perf.mark('willLoadMainBundle');
require('./bootstrap-amd').load('vs/code/electron-main/main', () => {
perf.mark('didLoadMainBundle');
});
}
async function onReady() {
perf.mark('main:appReady');
try {
const [cachedDataDir, nlsConfig] = await Promise.all([nodeCachedDataDir.ensureExists(), resolveNlsConfiguration()]);
startup(cachedDataDir, nlsConfig);
} catch (error) {
console.error(error);
}
}
/**
* @typedef {{ [arg: string]: any; '--'?: string[]; _: string[]; }} ParsedArgs
*
* @param {ParsedArgs} cliArgs
*/
function configureCommandlineSwitchesSync(cliArgs) {
const SUPPORTED_ELECTRON_SWITCHES = [
// alias from us for --disable-gpu
'disable-hardware-acceleration',
// provided by Electron
'disable-color-correct-rendering',
// override for the color profile to use
'force-color-profile'
];
if (process.platform === 'linux') {
SUPPORTED_ELECTRON_SWITCHES.push('force-renderer-accessibility');
}
// Read argv config
const argvConfig = readArgvConfigSync();
// Append each flag to Electron
Object.keys(argvConfig).forEach(argvKey => {
if (SUPPORTED_ELECTRON_SWITCHES.indexOf(argvKey) === -1) {
return; // unsupported argv key
}
const argvValue = argvConfig[argvKey];
// Color profile
if (argvKey === 'force-color-profile') {
if (argvValue) {
app.commandLine.appendSwitch(argvKey, argvValue);
}
}
// Others
else if (argvValue === true || argvValue === 'true') {
if (argvKey === 'disable-hardware-acceleration') {
app.disableHardwareAcceleration(); // needs to be called explicitly
} else {
app.commandLine.appendSwitch(argvKey);
}
}
});
// Support JS Flags
const jsFlags = getJSFlags(cliArgs);
if (jsFlags) {
app.commandLine.appendSwitch('js-flags', jsFlags);
}
// TODO@Deepak Electron 7 workaround for https://github.com/microsoft/vscode/issues/88873
app.commandLine.appendSwitch('disable-features', 'LayoutNG');
return argvConfig;
}
function readArgvConfigSync() {
// Read or create the argv.json config file sync before app('ready')
const argvConfigPath = getArgvConfigPath();
let argvConfig;
try {
argvConfig = JSON.parse(stripComments(fs.readFileSync(argvConfigPath).toString()));
} catch (error) {
if (error && error.code === 'ENOENT') {
createDefaultArgvConfigSync(argvConfigPath);
} else {
console.warn(`Unable to read argv.json configuration file in ${argvConfigPath}, falling back to defaults (${error})`);
}
}
// Fallback to default
if (!argvConfig) {
argvConfig = {
'disable-color-correct-rendering': true // Force pre-Chrome-60 color profile handling (for https://github.com/Microsoft/vscode/issues/51791)
};
}
return argvConfig;
}
/**
* @param {string} argvConfigPath
*/
function createDefaultArgvConfigSync(argvConfigPath) {
try {
// Ensure argv config parent exists
const argvConfigPathDirname = path.dirname(argvConfigPath);
if (!fs.existsSync(argvConfigPathDirname)) {
fs.mkdirSync(argvConfigPathDirname);
}
// Migrate over legacy locale
const localeConfigPath = path.join(userDataPath, 'User', 'locale.json');
const legacyLocale = getLegacyUserDefinedLocaleSync(localeConfigPath);
if (legacyLocale) {
try {
fs.unlinkSync(localeConfigPath);
} catch (error) {
//ignore
}
}
// Default argv content
const defaultArgvConfigContent = [
'// This configuration file allows you to pass permanent command line arguments to VS Code.',
'// Only a subset of arguments is currently supported to reduce the likelyhood of breaking',
'// the installation.',
'//',
'// PLEASE DO NOT CHANGE WITHOUT UNDERSTANDING THE IMPACT',
'//',
'// NOTE: Changing this file requires a restart of VS Code.',
'{',
' // Use software rendering instead of hardware accelerated rendering.',
' // This can help in cases where you see rendering issues in VS Code.',
' // "disable-hardware-acceleration": true,',
'',
' // Enabled by default by VS Code to resolve color issues in the renderer',
' // See https://github.com/Microsoft/vscode/issues/51791 for details',
' "disable-color-correct-rendering": true'
];
if (legacyLocale) {
defaultArgvConfigContent[defaultArgvConfigContent.length - 1] = `${defaultArgvConfigContent[defaultArgvConfigContent.length - 1]},`; // append trailing ","
defaultArgvConfigContent.push('');
defaultArgvConfigContent.push(' // Display language of VS Code');
defaultArgvConfigContent.push(` "locale": "${legacyLocale}"`);
}
defaultArgvConfigContent.push('}');
// Create initial argv.json with default content
fs.writeFileSync(argvConfigPath, defaultArgvConfigContent.join('\n'));
} catch (error) {
console.error(`Unable to create argv.json configuration file in ${argvConfigPath}, falling back to defaults (${error})`);
}
}
function getArgvConfigPath() {
const vscodePortable = process.env['VSCODE_PORTABLE'];
if (vscodePortable) {
return path.join(vscodePortable, 'argv.json');
}
let dataFolderName = product.dataFolderName;
if (process.env['VSCODE_DEV']) {
dataFolderName = `${dataFolderName}-dev`;
}
return path.join(os.homedir(), dataFolderName, 'argv.json');
}
/**
* @param {ParsedArgs} cliArgs
* @returns {string}
*/
function getJSFlags(cliArgs) {
const jsFlags = [];
// Add any existing JS flags we already got from the command line
if (cliArgs['js-flags']) {
jsFlags.push(cliArgs['js-flags']);
}
// Support max-memory flag
if (cliArgs['max-memory'] && !/max_old_space_size=(\d+)/g.exec(cliArgs['js-flags'])) {
jsFlags.push(`--max_old_space_size=${cliArgs['max-memory']}`);
}
return jsFlags.length > 0 ? jsFlags.join(' ') : null;
}
/**
* @param {ParsedArgs} cliArgs
*
* @returns {string}
*/
function getUserDataPath(cliArgs) {
if (portable.isPortable) {
return path.join(portable.portableDataPath, 'user-data');
}
return path.resolve(cliArgs['user-data-dir'] || paths.getDefaultUserDataPath(process.platform));
}
/**
* @returns {ParsedArgs}
*/
function parseCLIArgs() {
const minimist = require('minimist');
return minimist(process.argv, {
string: [
'user-data-dir',
'locale',
'js-flags',
'max-memory'
]
});
}
function setCurrentWorkingDirectory() {
try {
if (process.platform === 'win32') {
process.env['VSCODE_CWD'] = process.cwd(); // remember as environment variable
process.chdir(path.dirname(app.getPath('exe'))); // always set application folder as cwd
} else if (process.env['VSCODE_CWD']) {
process.chdir(process.env['VSCODE_CWD']);
}
} catch (err) {
console.error(err);
}
}
function registerListeners() {
/**
* macOS: when someone drops a file to the not-yet running VSCode, the open-file event fires even before
* the app-ready event. We listen very early for open-file and remember this upon startup as path to open.
*
* @type {string[]}
*/
const macOpenFiles = [];
global['macOpenFiles'] = macOpenFiles;
app.on('open-file', function (event, path) {
macOpenFiles.push(path);
});
/**
* macOS: react to open-url requests.
*
* @type {string[]}
*/
const openUrls = [];
const onOpenUrl = function (event, url) {
event.preventDefault();
openUrls.push(url);
};
app.on('will-finish-launching', function () {
app.on('open-url', onOpenUrl);
});
global['getOpenUrls'] = function () {
app.removeListener('open-url', onOpenUrl);
return openUrls;
};
}
/**
* @returns {{ ensureExists: () => Promise<string | undefined> }}
*/
function getNodeCachedDir() {
return new class {
constructor() {
this.value = this._compute();
}
async ensureExists() {
try {
await bootstrap.mkdirp(this.value);
return this.value;
} catch (error) {
// ignore
}
}
_compute() {
if (process.argv.indexOf('--no-cached-data') > 0) {
return undefined;
}
// IEnvironmentService.isBuilt
if (process.env['VSCODE_DEV']) {
return undefined;
}
// find commit id
const commit = product.commit;
if (!commit) {
return undefined;
}
return path.join(userDataPath, 'CachedData', commit);
}
};
}
//#region NLS Support
/**
* Resolve the NLS configuration
*
* @return {Promise<import('./vs/base/node/languagePacks').NLSConfiguration>}
*/
async function resolveNlsConfiguration() {
// First, we need to test a user defined locale. If it fails we try the app locale.
// If that fails we fall back to English.
let nlsConfiguration = nlsConfigurationPromise ? await nlsConfigurationPromise : undefined;
if (!nlsConfiguration) {
// Try to use the app locale. Please note that the app locale is only
// valid after we have received the app ready event. This is why the
// code is here.
let appLocale = app.getLocale();
if (!appLocale) {
nlsConfiguration = { locale: 'en', availableLanguages: {} };
} else {
// See above the comment about the loader and case sensitiviness
appLocale = appLocale.toLowerCase();
nlsConfiguration = await lp.getNLSConfiguration(product.commit, userDataPath, metaDataFile, appLocale);
if (!nlsConfiguration) {
nlsConfiguration = { locale: appLocale, availableLanguages: {} };
}
}
} else {
// We received a valid nlsConfig from a user defined locale
}
return nlsConfiguration;
}
/**
* @param {string} content
* @returns {string}
*/
function stripComments(content) {
const regexp = /("(?:[^\\"]*(?:\\.)?)*")|('(?:[^\\']*(?:\\.)?)*')|(\/\*(?:\r?\n|.)*?\*\/)|(\/{2,}.*?(?:(?:\r?\n)|$))/g;
return content.replace(regexp, function (match, m1, m2, m3, m4) {
// Only one of m1, m2, m3, m4 matches
if (m3) {
// A block comment. Replace with nothing
return '';
} else if (m4) {
// A line comment. If it ends in \r?\n then keep it.
const length_1 = m4.length;
if (length_1 > 2 && m4[length_1 - 1] === '\n') {
return m4[length_1 - 2] === '\r' ? '\r\n' : '\n';
}
else {
return '';
}
} else {
// We match a string
return match;
}
});
}
/**
* Language tags are case insensitive however an amd loader is case sensitive
* To make this work on case preserving & insensitive FS we do the following:
* the language bundles have lower case language tags and we always lower case
* the locale we receive from the user or OS.
*
* @param {{ locale: string | undefined; }} argvConfig
* @returns {string | undefined}
*/
function getUserDefinedLocale(argvConfig) {
const locale = args['locale'];
if (locale) {
return locale.toLowerCase(); // a directly provided --locale always wins
}
return argvConfig.locale && typeof argvConfig.locale === 'string' ? argvConfig.locale.toLowerCase() : undefined;
}
/**
* @param {string} localeConfigPath
* @returns {string | undefined}
*/
function getLegacyUserDefinedLocaleSync(localeConfigPath) {
try {
const content = stripComments(fs.readFileSync(localeConfigPath).toString());
const value = JSON.parse(content).locale;
return value && typeof value === 'string' ? value.toLowerCase() : undefined;
} catch (error) {
// ignore
}
}
//#endregion