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init.ts
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init.ts
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import { Buffer } from 'buffer';
import * as fs from 'fs';
import * as path from 'path';
import * as util from 'util';
const Module = require('module');
// We modified the original process.argv to let node.js load the init.js,
// we need to restore it here.
process.argv.splice(1, 1);
// Clear search paths.
require('../common/reset-search-paths');
// Import common settings.
require('@electron/internal/common/init');
if (process.platform === 'win32') {
// Redirect node's console to use our own implementations, since node can not
// handle console output when running as GUI program.
const consoleLog = (...args: any[]) => {
// @ts-ignore this typing is incorrect; 'format' is an optional parameter
// See https://nodejs.org/api/util.html#util_util_format_format_args
return process.log(util.format(...args) + '\n');
};
const streamWrite: NodeJS.WritableStream['write'] = function (chunk: Buffer | string, encoding?: any, callback?: Function) {
if (Buffer.isBuffer(chunk)) {
chunk = chunk.toString(encoding);
}
process.log(chunk);
if (callback) {
callback();
}
return true;
};
console.log = console.error = console.warn = consoleLog;
process.stdout.write = process.stderr.write = streamWrite;
}
// Don't quit on fatal error.
process.on('uncaughtException', function (error) {
// Do nothing if the user has a custom uncaught exception handler.
if (process.listenerCount('uncaughtException') > 1) {
return;
}
// Show error in GUI.
// We can't import { dialog } at the top of this file as this file is
// responsible for setting up the require hook for the "electron" module
// so we import it inside the handler down here
import('electron')
.then(({ dialog }) => {
const stack = error.stack ? error.stack : `${error.name}: ${error.message}`;
const message = 'Uncaught Exception:\n' + stack;
dialog.showErrorBox('A JavaScript error occurred in the main process', message);
});
});
// Emit 'exit' event on quit.
const { app } = require('electron');
app.on('quit', function (event, exitCode) {
process.emit('exit', exitCode);
});
if (process.platform === 'win32') {
// If we are a Squirrel.Windows-installed app, set app user model ID
// so that users don't have to do this.
//
// Squirrel packages are always of the form:
//
// PACKAGE-NAME
// - Update.exe
// - app-VERSION
// - OUREXE.exe
//
// Squirrel itself will always set the shortcut's App User Model ID to the
// form `com.squirrel.PACKAGE-NAME.OUREXE`. We need to call
// app.setAppUserModelId with a matching identifier so that renderer processes
// will inherit this value.
const updateDotExe = path.join(path.dirname(process.execPath), '..', 'update.exe');
if (fs.existsSync(updateDotExe)) {
const packageDir = path.dirname(path.resolve(updateDotExe));
const packageName = path.basename(packageDir).replace(/\s/g, '');
const exeName = path.basename(process.execPath).replace(/\.exe$/i, '').replace(/\s/g, '');
app.setAppUserModelId(`com.squirrel.${packageName}.${exeName}`);
}
}
// Map process.exit to app.exit, which quits gracefully.
process.exit = app.exit as () => never;
// Load the RPC server.
require('@electron/internal/browser/rpc-server');
// Load the guest view manager.
require('@electron/internal/browser/guest-view-manager');
require('@electron/internal/browser/guest-window-manager');
// Now we try to load app's package.json.
let packagePath = null;
let packageJson = null;
const searchPaths = ['app', 'app.asar', 'default_app.asar'];
if (process.resourcesPath) {
for (packagePath of searchPaths) {
try {
packagePath = path.join(process.resourcesPath, packagePath);
packageJson = Module._load(path.join(packagePath, 'package.json'));
break;
} catch {
continue;
}
}
}
if (packageJson == null) {
process.nextTick(function () {
return process.exit(1);
});
throw new Error('Unable to find a valid app');
}
// Set application's version.
if (packageJson.version != null) {
app.setVersion(packageJson.version);
}
// Set application's name.
if (packageJson.productName != null) {
app.name = `${packageJson.productName}`.trim();
} else if (packageJson.name != null) {
app.name = `${packageJson.name}`.trim();
}
// Set application's desktop name.
if (packageJson.desktopName != null) {
app.setDesktopName(packageJson.desktopName);
} else {
app.setDesktopName(`${app.name}.desktop`);
}
// Set v8 flags, delibrately lazy load so that apps that do not use this
// feature do not pay the price
if (packageJson.v8Flags != null) {
require('v8').setFlagsFromString(packageJson.v8Flags);
}
app._setDefaultAppPaths(packagePath);
// Load the chrome devtools support.
require('@electron/internal/browser/devtools');
// Load the chrome extension support.
require('@electron/internal/browser/chrome-extension');
// Load protocol module to ensure it is populated on app ready
require('@electron/internal/browser/api/protocol');
// Set main startup script of the app.
const mainStartupScript = packageJson.main || 'index.js';
const KNOWN_XDG_DESKTOP_VALUES = ['Pantheon', 'Unity:Unity7', 'pop:GNOME'];
function currentPlatformSupportsAppIndicator () {
if (process.platform !== 'linux') return false;
const currentDesktop = process.env.XDG_CURRENT_DESKTOP;
if (!currentDesktop) return false;
if (KNOWN_XDG_DESKTOP_VALUES.includes(currentDesktop)) return true;
// ubuntu based or derived session (default ubuntu one, communitheme…) supports
// indicator too.
if (/ubuntu/ig.test(currentDesktop)) return true;
return false;
}
// Workaround for electron/electron#5050 and electron/electron#9046
process.env.ORIGINAL_XDG_CURRENT_DESKTOP = process.env.XDG_CURRENT_DESKTOP;
if (currentPlatformSupportsAppIndicator()) {
process.env.XDG_CURRENT_DESKTOP = 'Unity';
}
// Quit when all windows are closed and no other one is listening to this.
app.on('window-all-closed', () => {
if (app.listenerCount('window-all-closed') === 1) {
app.quit();
}
});
const { setDefaultApplicationMenu } = require('@electron/internal/browser/default-menu');
// Create default menu.
//
// Note that the task must be added before loading any app, so we can make sure
// the call is maded before any user window is created, otherwise the default
// menu may show even when user explicitly hides the menu.
app.once('ready', setDefaultApplicationMenu);
if (packagePath) {
// Finally load app's main.js and transfer control to C++.
process._firstFileName = Module._resolveFilename(path.join(packagePath, mainStartupScript), null, false);
Module._load(path.join(packagePath, mainStartupScript), Module, true);
} else {
console.error('Failed to locate a valid package to load (app, app.asar or default_app.asar)');
console.error('This normally means you\'ve damaged the Electron package somehow');
}