[extension] Add cpp support

extension/bwcontest/.vscode/settings.json

@@ -5,5 +5,6 @@
 	"search.exclude": {
 		"out": true
 	},
-	"typescript.tsc.autoDetect": "off"
+	"typescript.tsc.autoDetect": "off",
+	"cSpell.enabled": false
 }

extension/bwcontest/src/SidebarProvider.ts

@@ -4,7 +4,7 @@ import { cloneAndOpenRepo } from './extension';
 import { BWPanel } from './problemPanel';
 import urlJoin from 'url-join';
 
-export type ContestLanguage = 'Java' | 'CSharp';
+export type ContestLanguage = 'Java' | 'CSharp' | 'CPP';
 
 export type TeamData = {
 	teamId: number;

extension/bwcontest/src/problemPanel.ts

@@ -7,6 +7,7 @@ import { join } from 'path';
 import { TeamData } from './SidebarProvider';
 import { submitProblem } from './submit';
 import { runCSharp } from './run/csharp';
+import { runCpp } from './run/cpp';
 
 export type ProblemData = {
 	id: number;
@@ -202,6 +203,21 @@ export class BWPanel {
 					this.webviewPostMessage({ msg: 'onRunningDone' });
 				}
 			);
+		} else if (teamData.language === 'CPP') {
+			killFunc = await runCpp(
+				join(repoDir, 'BWContest', teamData.contestId.toString(), teamData.teamId.toString()),
+				problem.pascalName,
+				input,
+				process.platform === 'win32' ? 'VisualStudio' : 'GCC',
+				(data: string) => {
+					outputBuffer.push(data);
+					this.webviewPostMessage({ msg: 'onRunningOutput', data: outputBuffer.join('') });
+				},
+				() => {
+					this.runningProgram = undefined;
+					this.webviewPostMessage({ msg: 'onRunningDone' });
+				}
+			);
 		}
 
 		if (killFunc !== undefined) {

extension/bwcontest/src/run/cpp.ts

@@ -0,0 +1,93 @@
+import * as fs from 'fs-extra';
+import { join } from 'path';
+import os = require('os');
+import { exec, spawn } from 'child_process';
+import util = require('node:util');
+import kill = require('tree-kill');
+
+const execPromise = util.promisify(exec);
+
+export type CppPlatform = 'VisualStudio' | 'GCC';
+
+export async function runCpp(
+	srcDir: string,
+	problemName: string,
+	input: string,
+	cppPlatform: CppPlatform,
+	outputCallback: (data: string) => void,
+	doneCallback: () => void
+): Promise<(() => void) | undefined> {
+	const tempDir = os.tmpdir();
+	const buildDir = join(tempDir, 'bwcontest_cpp');
+	if (await fs.exists(buildDir)) {
+		await fs.remove(buildDir);
+	}
+	await fs.mkdir(buildDir);
+
+	const configureCommand = `cmake -S ${srcDir} -B ${buildDir}`;
+	try {
+		await execPromise(configureCommand);
+	} catch (error) {
+		outputCallback('[Configure Error]\n\n');
+		outputCallback(String(error));
+		return;
+	}
+
+	const compileCommand = `cmake --build ${buildDir} --target ${problemName}`;
+	try {
+		await execPromise(compileCommand);
+	} catch (error) {
+		outputCallback('[Compile Error]\n\n');
+		outputCallback(String(error));
+		return;
+	}
+
+	let runCommand: string = '';
+	if (cppPlatform === 'VisualStudio') {
+		runCommand = `${join(buildDir, 'Debug', `${problemName}.exe`)}`;
+	} else if (cppPlatform === 'GCC') {
+		runCommand = `${(join(buildDir), problemName)}`;
+	}
+
+	const child = spawn(runCommand, { shell: true });
+	child.stdout.setEncoding('utf8');
+	child.stdout.on('data', (data) => {
+		outputCallback(data.toString());
+	});
+	child.stderr.setEncoding('utf8');
+	child.stderr.on('data', (data) => {
+		outputCallback(data.toString());
+	});
+	child.stdin.write(input);
+	child.stdin.end();
+
+	let done = false;
+
+	child.on('close', () => {
+		if (done === false) {
+			done = true;
+			doneCallback();
+		}
+	});
+
+	setTimeout(() => {
+		if (done === false) {
+			console.log('\n[30 seconds reached, killing process...]');
+			done = true;
+			if (child.pid) {
+				kill(child.pid);
+			}
+			outputCallback('\n[Timeout after 30 seconds]');
+			doneCallback();
+		}
+	}, 30000);
+
+	return () => {
+		if (child.pid) {
+			done = true;
+			kill(child.pid);
+			outputCallback('\n[Manually stopped]');
+			doneCallback();
+		}
+	};
+}