Implement API to check if poetry environment is related to a folder (#15686)

Author: Kartik Raj

src/client/common/installer/poetryEnvHelper.ts

@@ -0,0 +1,27 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+'use strict';
+
+import { isParentPath } from '../platform/fs-paths';
+import { shellExec } from '../process/rawProcessApis';
+
+/**
+ * Returns true if interpreter path belongs to a poetry environment which is associated with a particular folder,
+ * false otherwise.
+ * @param interpreterPath Absolute path to any python interpreter.
+ * @param folder Absolute path to the folder.
+ */
+export async function isPoetryEnvironmentRelatedToFolder(
+    interpreterPath: string,
+    folder: string,
+    poetryPath = 'poetry',
+): Promise<boolean> {
+    try {
+        const result = await shellExec(`${poetryPath} env info -p`, { cwd: folder, timeout: 15000 }, undefined);
+        const pathToEnv = result.stdout.trim();
+        return isParentPath(interpreterPath, pathToEnv);
+    } catch {
+        return false; // No need to log error as this is expected if the project is not initialized for poetry.
+    }
+}

src/client/common/platform/fs-paths.ts

@@ -147,3 +147,12 @@ export class FileSystemPathUtils implements IFileSystemPathUtils {
 export function normCasePath(filePath: string): string {
     return getOSType() === OSType.Windows ? nodepath.normalize(filePath).toUpperCase() : nodepath.normalize(filePath);
 }
+
+/**
+ * Returns true if given file path exists within the given parent directory, false otherwise.
+ * @param filePath File path to check for
+ * @param parentPath The potential parent path to check for
+ */
+export function isParentPath(filePath: string, parentPath: string): boolean {
+    return normCasePath(filePath).startsWith(normCasePath(parentPath));
+}