Add a script to copy language server and debugger binaries to the Extension folder (#14370)

Author: bobbrow

Extension/.scripts/copyExtensionBinaries.ts

@@ -0,0 +1,113 @@
+/* --------------------------------------------------------------------------------------------
+ * Copyright (c) Microsoft Corporation. All Rights Reserved.
+ * See 'LICENSE' in the project root for license information.
+ * ------------------------------------------------------------------------------------------ */
+
+import { cp, readdir, rm, stat } from 'node:fs/promises';
+import { homedir } from 'node:os';
+import { join } from 'node:path';
+import { $args, $root, green, heading, note } from './common';
+
+const extensionPrefix = 'ms-vscode.cpptools-';
+const foldersToCopy = ['bin', 'debugAdapters', 'LLVM'] as const;
+
+type InstalledExtension = {
+    path: string;
+    version: number[];
+    modified: number;
+};
+
+function compareVersions(left: number[], right: number[]): number {
+    const maxLength: number = Math.max(left.length, right.length);
+    for (let i = 0; i < maxLength; i++) {
+        const diff: number = (left[i] ?? 0) - (right[i] ?? 0);
+        if (diff !== 0) {
+            return diff;
+        }
+    }
+    return 0;
+}
+
+function tryParseVersion(folderName: string): number[] | undefined {
+    if (!folderName.startsWith(extensionPrefix)) {
+        return undefined;
+    }
+
+    const versionText: string | undefined = folderName.substring(extensionPrefix.length).match(/^\d+\.\d+\.\d+/)?.[0];
+    return versionText?.split('.').map(each => Number(each));
+}
+
+async function getInstalledExtensions(root: string): Promise<InstalledExtension[]> {
+    try {
+        const entries = await readdir(root, { withFileTypes: true });
+        const candidates: Promise<InstalledExtension | undefined>[] = entries.map(async (entry) => {
+            if (!entry.isDirectory()) {
+                return undefined;
+            }
+
+            const version: number[] | undefined = tryParseVersion(entry.name);
+            if (!version) {
+                return undefined;
+            }
+
+            const extensionPath: string = join(root, entry.name);
+            for (const folder of foldersToCopy) {
+                const info = await stat(join(extensionPath, folder)).catch(() => undefined);
+                if (!info?.isDirectory()) {
+                    return undefined;
+                }
+            }
+
+            const info = await stat(extensionPath);
+            return {
+                path: extensionPath,
+                version,
+                modified: info.mtimeMs
+            };
+        });
+
+        const found = await Promise.all(candidates);
+        return found.filter((entry): entry is InstalledExtension => entry !== undefined);
+    } catch {
+        return [];
+    }
+}
+
+async function findLatestInstalledExtension(providedPath?: string): Promise<string> {
+    if (providedPath) {
+        return providedPath;
+    }
+
+    const searchRoots: string[] = [
+        join(homedir(), '.vscode', 'extensions'),
+        join(homedir(), '.vscode-insiders', 'extensions'),
+        join(homedir(), '.vscode-server', 'extensions'),
+        join(homedir(), '.vscode-server-insiders', 'extensions')
+    ];
+
+    const installed: InstalledExtension[] = (await Promise.all(searchRoots.map(each => getInstalledExtensions(each)))).flat();
+    if (!installed.length) {
+        throw new Error(`Unable to find an installed C/C++ extension under ${searchRoots.join(' or ')}.`);
+    }
+
+    installed.sort((left, right) => compareVersions(right.version, left.version) || right.modified - left.modified);
+    return installed[0].path;
+}
+
+export async function main(sourcePath = $args[0]) {
+    console.log(heading('Copy installed extension binaries'));
+
+    const installedExtensionPath: string = await findLatestInstalledExtension(sourcePath);
+    note(`Using installed extension at ${installedExtensionPath}`);
+
+    for (const folder of foldersToCopy) {
+        const source: string = join(installedExtensionPath, folder);
+        const destination: string = join($root, folder);
+
+        console.log(`Copying ${green(folder)} from ${source}`);
+        await rm(destination, { recursive: true, force: true });
+        await cp(source, destination, { recursive: true, force: true });
+    }
+
+    note(`Copied installed binaries into ${$root}`);
+}

Extension/package.json

@@ -6805,6 +6805,7 @@
         "generate-native-strings": "ts-node -T ./.scripts/generateNativeStrings.ts",
         "generate-options-schema": "ts-node -T ./.scripts/generateOptionsSchema.ts",
         "copy-walkthrough-media": "ts-node -T ./.scripts/copyWalkthruMedia.ts",
+        "copy-extension-binaries": "ts-node -T ./.scripts/copyExtensionBinaries.ts",
         "translations-export": "yarn install && yarn prep && yarn generate-native-strings && gulp translations-export",
         "translations-generate": "gulp translations-generate",
         "translations-import": "gulp translations-import",