support WSL (#46)

Author: purocean

package.json

@@ -201,6 +201,12 @@
                         "default": true,
                         "scope": "window",
                         "description": "Show a hint to set the default language."
+                    },
+                    "leetcode.useWsl": {
+                        "type": "boolean",
+                        "default": false,
+                        "scope": "window",
+                        "description": "Use Node.js inside the Windows Subsystem for Linux."
                     }
                 }
             }

src/commands/show.ts

@@ -8,6 +8,7 @@ import { IQuickItemEx, languages, leetCodeBinaryPath, ProblemState } from "../sh
 import { executeCommand } from "../utils/cpUtils";
 import { DialogOptions, DialogType, promptForOpenOutputChannel, promptForSignIn } from "../utils/uiUtils";
 import { selectWorkspaceFolder } from "../utils/workspaceUtils";
+import * as wsl from "../utils/wslUtils";
 import * as list from "./list";
 
 export async function showProblem(channel: vscode.OutputChannel, node?: LeetCodeNode): Promise<void> {
@@ -53,7 +54,9 @@ async function showProblemInternal(channel: vscode.OutputChannel, id: string): P
         const reg: RegExp = /\* Source Code:\s*(.*)/;
         const match: RegExpMatchArray | null = result.match(reg);
         if (match && match.length >= 2) {
-            await vscode.window.showTextDocument(vscode.Uri.file(match[1].trim()), { preview: false });
+            const filePath = wsl.useWsl() ? wsl.toWinPath(match[1].trim()) : match[1].trim();
+
+            await vscode.window.showTextDocument(vscode.Uri.file(filePath), { preview: false });
         } else {
             throw new Error("Failed to fetch the problem information.");
         }

src/leetCodeManager.ts

@@ -7,6 +7,7 @@ import { UserStatus } from "./shared";
 import { leetCodeBinaryPath } from "./shared";
 import { executeCommand } from "./utils/cpUtils";
 import { DialogType, promptForOpenOutputChannel } from "./utils/uiUtils";
+import * as wsl from "./utils/wslUtils";
 
 export interface ILeetCodeManager extends EventEmitter {
     getLoginStatus(channel: vscode.OutputChannel): void;
@@ -43,7 +44,11 @@ class LeetCodeManager extends EventEmitter implements ILeetCodeManager {
         try {
             const userName: string | undefined = await new Promise(async (resolve: (res: string | undefined) => void, reject: (e: Error) => void): Promise<void> => {
                 let result: string = "";
-                const childProc: cp.ChildProcess = cp.spawn("node", [leetCodeBinaryPath, "user", "-l"], { shell: true });
+
+                const childProc: cp.ChildProcess = wsl.useWsl()
+                    ? cp.spawn("wsl", ["node", leetCodeBinaryPath, "user", "-l"], { shell: true })
+                    : cp.spawn("node", [leetCodeBinaryPath, "user", "-l"], { shell: true });
+
                 childProc.stdout.on("data", (data: string | Buffer) => {
                     data = data.toString();
                     result = result.concat(data);

src/shared.ts

@@ -2,8 +2,15 @@
 
 import * as path from "path";
 import * as vscode from "vscode";
+import * as wsl from "./utils/wslUtils";
 
-export const leetCodeBinaryPath: string = `"${path.join(__dirname, "..", "..", "node_modules", "leetcode-cli", "bin", "leetcode")}"`;
+let binPath = path.join(__dirname, "..", "..", "node_modules", "leetcode-cli", "bin", "leetcode");
+
+if (wsl.useWsl()) {
+    binPath = wsl.toWslPath(binPath);
+}
+
+export const leetCodeBinaryPath: string = `"${binPath}"`;
 
 export interface IQuickItemEx<T> extends vscode.QuickPickItem {
     value: T;

src/utils/cpUtils.ts

@@ -2,11 +2,15 @@
 
 import * as cp from "child_process";
 import * as vscode from "vscode";
+import * as wsl from "./wslUtils";
 
 export async function executeCommand(channel: vscode.OutputChannel, command: string, args: string[], options: cp.SpawnOptions = { shell: true }): Promise<string> {
     return new Promise((resolve: (res: string) => void, reject: (e: Error) => void): void => {
         let result: string = "";
-        const childProc: cp.ChildProcess = cp.spawn(command, args, options);
+
+        const childProc: cp.ChildProcess = wsl.useWsl()
+            ? cp.spawn("wsl", [command].concat(args), options)
+            : cp.spawn(command, args, options);
 
         childProc.stdout.on("data", (data: string | Buffer) => {
             data = data.toString();

src/utils/workspaceUtils.ts

@@ -3,6 +3,7 @@
 import * as os from "os";
 import * as path from "path";
 import * as vscode from "vscode";
+import * as wsl from "./wslUtils";
 
 export async function selectWorkspaceFolder(): Promise<string> {
     let folder: vscode.WorkspaceFolder | undefined;
@@ -15,7 +16,10 @@ export async function selectWorkspaceFolder(): Promise<string> {
             folder = vscode.workspace.workspaceFolders[0];
         }
     }
-    return folder ? folder.uri.fsPath : path.join(os.homedir(), ".leetcode");
+
+    const workFolder = folder ? folder.uri.fsPath : path.join(os.homedir(), ".leetcode");
+
+    return wsl.useWsl() ? wsl.toWslPath(workFolder) : workFolder;
 }
 
 export async function getActivefilePath(uri?: vscode.Uri): Promise<string | undefined> {
@@ -33,5 +37,5 @@ export async function getActivefilePath(uri?: vscode.Uri): Promise<string | unde
         vscode.window.showWarningMessage("Please save the solution file first.");
         return undefined;
     }
-    return textEditor.document.uri.fsPath;
+    return wsl.useWsl() ? wsl.toWslPath(textEditor.document.uri.fsPath) : textEditor.document.uri.fsPath;
 }

src/utils/wslUtils.ts

@@ -0,0 +1,18 @@
+"use strict";
+
+import * as cp from "child_process";
+import * as vscode from "vscode";
+
+export function useWsl(): boolean {
+    const leetCodeConfig: vscode.WorkspaceConfiguration = vscode.workspace.getConfiguration("leetcode");
+
+    return process.platform === "win32" && leetCodeConfig.get<boolean>("useWsl") === true;
+}
+
+export function toWslPath(path: string): string {
+    return cp.execFileSync("wsl", ["wslpath", "-u", `${path.replace(/\\/g, "/")}`]).toString().trim();
+}
+
+export function toWinPath(path: string): string {
+    return cp.execFileSync("wsl", ["wslpath", "-w", path]).toString().trim();
+}