check if windows file is executable (#238142)

fix #237596

extensions/terminal-suggest/src/helpers/executable.ts

@@ -0,0 +1,39 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import { osIsWindows } from './os';
+import * as fs from 'fs/promises';
+
+export async function isExecutable(filePath: string): Promise<boolean> {
+	if (osIsWindows()) {
+		return windowsExecutableExtensions.find(ext => filePath.endsWith(ext)) !== undefined;
+	}
+	try {
+		const stats = await fs.stat(filePath);
+		// On macOS/Linux, check if the executable bit is set
+		return (stats.mode & 0o100) !== 0;
+	} catch (error) {
+		// If the file does not exist or cannot be accessed, it's not executable
+		return false;
+	}
+}
+const windowsExecutableExtensions: string[] = [
+	'.exe',   // Executable file
+	'.bat',   // Batch file
+	'.cmd',   // Command script
+	'.com',   // Command file
+
+	'.msi',   // Windows Installer package
+
+	'.ps1',   // PowerShell script
+
+	'.vbs',   // VBScript file
+	'.js',    // JScript file
+	'.jar',   // Java Archive (requires Java runtime)
+	'.py',    // Python script (requires Python interpreter)
+	'.rb',    // Ruby script (requires Ruby interpreter)
+	'.pl',    // Perl script (requires Perl interpreter)
+	'.sh',    // Shell script (via WSL or third-party tools)
+];

extensions/terminal-suggest/src/helpers/os.ts

@@ -0,0 +1,10 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as os from 'os';
+
+export function osIsWindows(): boolean {
+	return os.platform() === 'win32';
+}