废弃的聊天室代码

😭😭😭

others/C++/chat_room/src/Application.cpp

@@ -0,0 +1,46 @@
+#include "Application.hpp"
+#include "MainWindow.hpp"
+#include <FL/Fl.H>
+#include <iostream>
+
+Application::Application(int argc, char** argv) 
+    : mainWindow(nullptr) {
+    try {
+        std::cout << "正在初始化应用程序..." << std::endl;
+        mainWindow = new MainWindow(400, 300, "局域网聊天室");
+        std::cout << "主窗口创建成功" << std::endl;
+    } catch (const std::exception& e) {
+        std::cerr << "初始化失败: " << e.what() << std::endl;
+    }
+}
+
+int Application::run() {
+    std::cout << "应用程序启动..." << std::endl;
+    
+    if (!mainWindow) {
+        std::cerr << "致命错误: 主窗口对象创建失败" << std::endl;
+        return 1;
+    }
+
+    try {
+        std::cout << "初始化FLTK图形界面..." << std::endl;
+        Fl::scheme("gtk+");
+        
+        std::cout << "显示主窗口..." << std::endl;
+        mainWindow->show();
+        
+        std::cout << "窗口尺寸: " << mainWindow->w() << "x" << mainWindow->h() << std::endl;
+        std::cout << "进入主事件循环..." << std::endl;
+        
+        int ret = Fl::run();
+        std::cout << "应用程序正常退出" << std::endl;
+        return ret;
+    } catch (const std::exception& e) {
+        std::cerr << "运行时错误: " << e.what() << std::endl;
+        return 1;
+    }
+}
+
+Application::~Application() {
+    delete mainWindow;
+}

others/C++/chat_room/src/ChatRoom.cpp

@@ -0,0 +1,104 @@
+#include "ChatRoom.hpp"
+#include "Message.hpp"
+#include "MessageProtocol.hpp"
+#include <iostream>
+#include <algorithm>
+#include <winsock2.h>
+#include <ws2tcpip.h>
+
+ChatRoom::ChatRoom() : network(std::make_unique<NetworkManager>()) {}
+
+ChatRoom::~ChatRoom() {}
+
+bool ChatRoom::createRoom(int port, const std::string& password) {
+    roomPassword = password;
+    if (!network->startServer(port)) {
+        std::cerr << "Failed to create room on port " << port << std::endl;
+        return false;
+    }
+    return true;
+}
+
+bool ChatRoom::joinRoom(const std::string& ip, int port, const std::string& password) {
+    if (!network->connectToServer(ip, port)) {
+        std::cerr << "Failed to connect to " << ip << ":" << port << std::endl;
+        return false;
+    }
+    
+    // 发送密码验证
+    Message authMsg(nullptr, password, MessageType::AUTH);
+    network->sendMessage(MessageProtocol::encodeMessage(authMsg));
+    
+    // 等待验证响应
+    auto response = network->receiveMessages();
+    if (response.empty() || response[0] != "AUTH_SUCCESS") {
+        return false;
+    }
+    
+    return true;
+}
+
+std::string ChatRoom::getRoomPassword() const {
+    return roomPassword;
+}
+
+std::string ChatRoom::getLocalIP() const {
+    char host[256];
+    if (gethostname(host, sizeof(host)) == SOCKET_ERROR) {
+        return "127.0.0.1";
+    }
+    
+    struct hostent* phe = gethostbyname(host);
+    if (phe == nullptr) {
+        return "127.0.0.1";
+    }
+    
+    for (int i = 0; phe->h_addr_list[i] != nullptr; ++i) {
+        struct in_addr addr;
+        memcpy(&addr, phe->h_addr_list[i], sizeof(struct in_addr));
+        std::string ip = inet_ntoa(addr);
+        if (ip != "127.0.0.1") {
+            return ip;
+        }
+    }
+    
+    return "127.0.0.1";
+}
+
+void ChatRoom::sendChatMessage(const std::string& message) {
+    network->sendMessage(message);
+    messages.push_back(message);
+}
+
+void ChatRoom::addUser(const std::string& username) {
+    auto user = std::make_shared<User>(username, "");
+    users.push_back(user);
+}
+
+void ChatRoom::removeUser(const std::string& username) {
+    users.erase(
+        std::remove_if(users.begin(), users.end(), 
+            [&username](const std::shared_ptr<User>& user) {
+                return user->getUsername() == username;
+            }),
+        users.end());
+}
+
+const std::vector<std::string>& ChatRoom::getMessages() const {
+    return messages;
+}
+
+const std::vector<std::shared_ptr<User>>& ChatRoom::getUsers() const {
+    return users;
+}
+
+std::string ChatRoom::getCurrentUsername() const {
+    if (!users.empty()) {
+        return users[0]->getUsername();
+    }
+    return "";
+}
+
+NetworkManager* ChatRoom::getNetworkManager() const {
+    return network.get();
+}

others/C++/chat_room/src/ChatWindow.cpp

@@ -0,0 +1,50 @@
+#include "ChatWindow.hpp"
+#include <FL/Fl.H>
+#include <iostream>
+
+ChatWindow::ChatWindow(int w, int h, const char* title, std::shared_ptr<ChatRoom> chatRoom)
+    : Fl_Window(w, h, title), chatRoom(chatRoom) {
+    
+    // 设置消息回调
+    auto networkManager = chatRoom->getNetworkManager();
+    networkManager->setMessageCallback([this](const std::string& msg) {
+        this->appendMessage(msg);
+    });
+    
+    messageBuffer = new Fl_Text_Buffer();
+    messageDisplay = new Fl_Text_Display(20, 20, w-220, h-70);
+    messageDisplay->buffer(messageBuffer);
+    
+    userList = new Fl_Browser(w-190, 20, 170, h-70);
+    userList->type(FL_MULTI_BROWSER);
+    
+    messageInput = new Fl_Input(20, h-40, w-100, 30);
+    sendButton = new Fl_Button(w-70, h-40, 60, 30, "发送");
+    sendButton->callback(onSendMessageCallback, this);
+    
+    updateUserList();
+}
+
+void ChatWindow::appendMessage(const std::string& message) {
+    messageBuffer->append(message.c_str());
+    messageBuffer->append("\n");
+    messageDisplay->scroll(messageBuffer->count_lines(0, messageBuffer->length()), 0);
+}
+
+void ChatWindow::updateUserList() {
+    userList->clear();
+    for (const auto& user : chatRoom->getUsers()) {
+        userList->add(user->getUsername().c_str());
+    }
+}
+
+void ChatWindow::onSendMessageCallback(Fl_Widget* w, void* data) {
+    ChatWindow* win = static_cast<ChatWindow*>(data);
+    std::string message = win->messageInput->value();
+    
+    if (!message.empty()) {
+        win->chatRoom->sendChatMessage(message);
+        win->messageInput->value("");
+        Fl::focus(win->messageInput);
+    }
+}

others/C++/chat_room/src/ConfigManager.cpp

@@ -0,0 +1,38 @@
+#include "ConfigManager.hpp"
+#include <fstream>
+#include <sstream>
+
+ConfigManager& ConfigManager::getInstance() {
+    static ConfigManager instance;
+    return instance;
+}
+
+void ConfigManager::loadConfig(const std::string& filename) {
+    std::ifstream file(filename);
+    std::string line;
+    
+    while (std::getline(file, line)) {
+        size_t pos = line.find('=');
+        if (pos != std::string::npos) {
+            std::string key = line.substr(0, pos);
+            std::string value = line.substr(pos + 1);
+            configMap[key] = value;
+        }
+    }
+}
+
+void ConfigManager::saveConfig(const std::string& filename) {
+    std::ofstream file(filename);
+    
+    for (const auto& pair : configMap) {
+        file << pair.first << "=" << pair.second << "\n";
+    }
+}
+
+std::string ConfigManager::getValue(const std::string& key) {
+    return configMap[key];
+}
+
+void ConfigManager::setValue(const std::string& key, const std::string& value) {
+    configMap[key] = value;
+}

others/C++/chat_room/src/MainWindow.cpp

@@ -0,0 +1,140 @@
+#include "MainWindow.hpp"
+#include "ChatWindow.hpp"
+#include <FL/Fl_Input.H>
+#include <FL/Fl_Output.H>
+#include <iostream>
+#include <string>
+
+MainWindow::MainWindow(int w, int h, const char* title) 
+    : Fl_Window(w, h, title), chatRoom(std::make_unique<ChatRoom>()) {
+    
+    // 初始化窗口基础属性
+    color(FL_WHITE);
+    begin();
+    
+    try {
+        // 初始化界面组件
+        titleBox = new Fl_Box(w/2-100, 20, 200, 30, "局域网聊天室");
+        titleBox->box(FL_NO_BOX);
+        titleBox->labelfont(FL_BOLD);
+        titleBox->labelsize(20);
+        titleBox->labelcolor(FL_BLUE);
+        
+        createRoomBtn = new Fl_Button(w/2-100, 100, 200, 40, "创建房间");
+        createRoomBtn->callback(onCreateRoomCallback, this);
+        
+        joinRoomBtn = new Fl_Button(w/2-100, 160, 200, 40, "加入房间");
+        joinRoomBtn->callback(onJoinRoomCallback, this);
+        
+        // 初始化对话框指针
+        createRoomDialog = nullptr;
+        joinRoomDialog = nullptr;
+        usernameDialog = nullptr;
+        
+        end();
+    } catch (const std::exception& e) {
+        std::cerr << "窗口初始化失败: " << e.what() << std::endl;
+        throw;
+    }
+}
+
+MainWindow::~MainWindow() {
+    if (createRoomDialog) delete createRoomDialog;
+    if (joinRoomDialog) delete joinRoomDialog;
+    if (usernameDialog) delete usernameDialog;
+}
+
+void MainWindow::showCreateRoomDialog() {
+    if (createRoomDialog) return;
+    
+    createRoomDialog = new Fl_Window(300, 250, "创建房间");
+    createRoomDialog->begin();
+    
+    portInput = new Fl_Input(100, 30, 180, 30, "端口:");
+    passwordInput = new Fl_Input(100, 70, 180, 30, "密码:");
+    Fl_Button* confirmBtn = new Fl_Button(100, 120, 100, 30, "确认");
+    confirmBtn->callback(onCreateRoomConfirmCallback, this);
+    
+    createRoomDialog->end();
+    createRoomDialog->show();
+}
+
+void MainWindow::showJoinRoomDialog() {
+    if (joinRoomDialog) return;
+    
+    joinRoomDialog = new Fl_Window(300, 250, "加入房间");
+    joinRoomDialog->begin();
+    
+    ipInput = new Fl_Input(100, 30, 180, 30, "IP地址:");
+    portInput = new Fl_Input(100, 70, 180, 30, "端口:");
+    passwordInput = new Fl_Input(100, 110, 180, 30, "密码:");
+    
+    Fl_Button* confirmBtn = new Fl_Button(100, 160, 100, 30, "确认");
+    confirmBtn->callback(onJoinRoomConfirmCallback, this);
+    
+    joinRoomDialog->end();
+    joinRoomDialog->show();
+}
+
+void MainWindow::showUsernameDialog() {
+    if (usernameDialog) return;
+    
+    usernameDialog = new Fl_Window(300, 150, "输入用户名");
+    usernameDialog->begin();
+    
+    usernameInput = new Fl_Input(100, 30, 180, 30, "用户名:");
+    Fl_Button* confirmBtn = new Fl_Button(100, 80, 100, 30, "确认");
+    confirmBtn->callback(onUsernameConfirmCallback, this);
+    
+    usernameDialog->end();
+    usernameDialog->show();
+}
+
+void MainWindow::onCreateRoomCallback(Fl_Widget* w, void* data) {
+    MainWindow* win = static_cast<MainWindow*>(data);
+    win->showCreateRoomDialog();
+}
+
+void MainWindow::onJoinRoomCallback(Fl_Widget* w, void* data) {
+    MainWindow* win = static_cast<MainWindow*>(data);
+    win->showJoinRoomDialog();
+}
+
+void MainWindow::onCreateRoomConfirmCallback(Fl_Widget* w, void* data) {
+    MainWindow* win = static_cast<MainWindow*>(data);
+    int port = std::stoi(win->portInput->value());
+    
+    std::string password = win->passwordInput->value();
+    if (win->chatRoom->createRoom(port, password)) {
+        win->createRoomDialog->hide();
+        win->showUsernameDialog();
+    }
+}
+
+void MainWindow::onJoinRoomConfirmCallback(Fl_Widget* w, void* data) {
+    MainWindow* win = static_cast<MainWindow*>(data);
+    std::string ip = win->ipInput->value();
+    int port = std::stoi(win->portInput->value());
+    
+    std::string password = win->passwordInput->value();
+    if (win->chatRoom->joinRoom(ip, port, password)) {
+        win->joinRoomDialog->hide();
+        win->showUsernameDialog();
+    }
+}
+
+void MainWindow::onUsernameConfirmCallback(Fl_Widget* w, void* data) {
+    MainWindow* win = static_cast<MainWindow*>(data);
+    std::string username = win->usernameInput->value();
+    
+    win->chatRoom->addUser(username);
+    win->usernameDialog->hide();
+    
+    // 创建并显示聊天窗口
+    auto chatRoomPtr = std::shared_ptr<ChatRoom>(win->chatRoom.release());
+    auto chatWindow = new ChatWindow(800, 600, "聊天室", chatRoomPtr);
+    chatWindow->show();
+    
+    // 隐藏主窗口
+    win->hide();
+}

others/C++/chat_room/src/Message.cpp

@@ -0,0 +1,24 @@
+#include "Message.hpp"
+
+Message::Message(const std::shared_ptr<User>& sender, 
+                 const std::string& content,
+                 MessageType type)
+    : sender(sender), content(content), type(type) {
+    timestamp = std::chrono::system_clock::now();
+}
+
+const std::shared_ptr<User>& Message::getSender() const {
+    return sender;
+}
+
+const std::string& Message::getContent() const {
+    return content;
+}
+
+MessageType Message::getType() const {
+    return type;
+}
+
+std::chrono::system_clock::time_point Message::getTimestamp() const {
+    return timestamp;
+}

others/C++/chat_room/src/MessageProtocol.cpp

@@ -0,0 +1,46 @@
+#include "MessageProtocol.hpp"
+#include <sstream>
+#include "StringUtils.hpp"
+
+std::string MessageProtocol::encodeMessage(const Message& message) {
+    std::ostringstream oss;
+    oss << static_cast<int>(message.getType()) << "|"
+        << (message.getSender() ? message.getSender()->getUsername() : "") << "|"
+        << message.getContent();
+    return oss.str();
+}
+
+Message MessageProtocol::decodeMessage(const std::string& data) {
+    auto parts = StringUtils::split(data, '|');
+    if (parts.size() < 3) {
+        throw std::runtime_error("Invalid message format");
+    }
+
+    std::shared_ptr<User> sender = nullptr;
+    if (!parts[1].empty()) {
+        sender = std::make_shared<User>(parts[1], "");
+    }
+    
+    MessageType type = static_cast<MessageType>(std::stoi(parts[0]));
+    std::string content = parts[2];
+    
+    if (type == MessageType::USER_JOIN || type == MessageType::USER_LEAVE) {
+        content = "";
+    }
+
+    return Message(sender, content, type);
+}
+
+bool MessageProtocol::validateMessage(const std::string& data) {
+    auto parts = StringUtils::split(data, '|');
+    if (parts.size() < 3) {
+        return false;
+    }
+    
+    try {
+        int type = std::stoi(parts[0]);
+        return type >= 0 && type <= 5; // 检查消息类型是否有效(0-5对应MessageType枚举)
+    } catch (...) {
+        return false;
+    }
+}

others/C++/chat_room/src/NetworkEventHandler.cpp

@@ -0,0 +1,81 @@
+#include "NetworkEventHandler.hpp"
+#include <iostream>
+#include <chrono>
+#include "MessageProtocol.hpp"
+
+NetworkEventHandler::NetworkEventHandler(std::shared_ptr<ChatRoom> chatRoom)
+    : chatRoom(chatRoom), running(false) {}
+
+NetworkEventHandler::~NetworkEventHandler() {
+    stop();
+}
+
+void NetworkEventHandler::start() {
+    if (running) return;
+    running = true;
+    heartbeatThread = std::thread(&NetworkEventHandler::heartbeatCheck, this);
+}
+
+void NetworkEventHandler::stop() {
+    running = false;
+    if (heartbeatThread.joinable()) {
+        heartbeatThread.join();
+    }
+}
+
+void NetworkEventHandler::onConnected() {
+    auto users = chatRoom->getUsers();
+    if (!users.empty()) {
+        auto user = users[0]; // 假设第一个用户是当前用户
+        Message joinMsg(user, "", MessageType::USER_JOIN);
+        chatRoom->sendChatMessage(MessageProtocol::encodeMessage(joinMsg));
+    }
+}
+
+void NetworkEventHandler::onMessageReceived(const std::string& message) {
+    try {
+        if (!MessageProtocol::validateMessage(message)) {
+            return;
+        }
+
+        auto msg = MessageProtocol::decodeMessage(message);
+        switch (msg.getType()) {
+            case MessageType::TEXT_MESSAGE:
+                chatRoom->sendChatMessage(msg.getSender()->getUsername() + ": " + msg.getContent());
+                break;
+            case MessageType::USER_JOIN:
+                chatRoom->sendChatMessage(msg.getSender()->getUsername() + " 加入了聊天室");
+                break;
+            case MessageType::USER_LEAVE:
+                chatRoom->sendChatMessage(msg.getSender()->getUsername() + " 离开了聊天室");
+                break;
+            case MessageType::SYSTEM:
+                chatRoom->sendChatMessage("[系统] " + msg.getContent());
+                break;
+            case MessageType::AUTH:
+                if (msg.getContent() == chatRoom->getRoomPassword()) {
+                    chatRoom->sendChatMessage("AUTH_SUCCESS");
+                } else {
+                    chatRoom->sendChatMessage("AUTH_FAILED");
+                }
+                break;
+            default:
+                break;
+        }
+    } catch (const std::exception& e) {
+        std::cerr << "消息处理错误: " << e.what() << std::endl;
+    }
+}
+
+void NetworkEventHandler::onError(const std::string& error) {
+    chatRoom->sendChatMessage("[网络错误] " + error);
+}
+
+void NetworkEventHandler::heartbeatCheck() {
+    while (running) {
+        std::this_thread::sleep_for(std::chrono::seconds(30));
+        if (!chatRoom->getNetworkManager()->isConnected()) {
+            onError("连接已断开");
+        }
+    }
+}

others/C++/chat_room/src/NetworkManager.cpp

@@ -0,0 +1,138 @@
+#include "NetworkManager.hpp"
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#include <iostream>
+#include <stdexcept>
+
+#pragma comment(lib, "ws2_32.lib")
+
+NetworkManager::NetworkManager() : serverSocket(INVALID_SOCKET), clientSocket(INVALID_SOCKET) {
+    WSADATA wsaData;
+    if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) {
+        throw std::runtime_error("WSAStartup failed");
+    }
+}
+
+NetworkManager::~NetworkManager() {
+    if (serverSocket != INVALID_SOCKET) {
+        closesocket(serverSocket);
+    }
+    if (clientSocket != INVALID_SOCKET) {
+        closesocket(clientSocket);
+    }
+    WSACleanup();
+}
+
+bool NetworkManager::startServer(int port) {
+    serverSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+    if (serverSocket == INVALID_SOCKET) {
+        return false;
+    }
+
+    sockaddr_in serverAddr;
+    serverAddr.sin_family = AF_INET;
+    serverAddr.sin_addr.s_addr = htonl(INADDR_ANY); // 监听所有网络接口
+    serverAddr.sin_port = htons(port);
+    
+    // 设置SO_REUSEADDR选项
+    int opt = 1;
+    setsockopt(serverSocket, SOL_SOCKET, SO_REUSEADDR, (const char*)&opt, sizeof(opt));
+
+    if (bind(serverSocket, (sockaddr*)&serverAddr, sizeof(serverAddr)) == SOCKET_ERROR) {
+        std::cerr << "绑定端口失败: " << WSAGetLastError() << std::endl;
+        closesocket(serverSocket);
+        return false;
+    }
+
+    if (listen(serverSocket, SOMAXCONN) == SOCKET_ERROR) {
+        std::cerr << "监听失败: " << WSAGetLastError() << std::endl;
+        closesocket(serverSocket);
+        return false;
+    }
+    
+    // 启动接收线程
+    acceptThread = std::thread([this]() {
+        while (true) {
+            sockaddr_in clientAddr;
+            int addrLen = sizeof(clientAddr);
+            SOCKET newClient = accept(serverSocket, (sockaddr*)&clientAddr, &addrLen);
+            if (newClient == INVALID_SOCKET) break;
+            
+            std::lock_guard<std::mutex> lock(clientsMutex);
+            clients.push_back(newClient);
+        }
+    });
+    
+    std::cout << "服务器已启动，监听端口: " << port << std::endl;
+    return true;
+}
+
+bool NetworkManager::connectToServer(const std::string& ip, int port) {
+    clientSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+    if (clientSocket == INVALID_SOCKET) {
+        return false;
+    }
+
+    sockaddr_in serverAddr;
+    serverAddr.sin_family = AF_INET;
+    inet_pton(AF_INET, ip.c_str(), &serverAddr.sin_addr);
+    serverAddr.sin_port = htons(port);
+
+    if (connect(clientSocket, (sockaddr*)&serverAddr, sizeof(serverAddr)) == SOCKET_ERROR) {
+        std::cerr << "连接服务器失败: " << WSAGetLastError() << std::endl;
+        closesocket(clientSocket);
+        return false;
+    }
+    
+    std::cout << "已连接到服务器: " << ip << ":" << port << std::endl;
+
+    return true;
+}
+
+void NetworkManager::sendMessage(const std::string& message) {
+    // 服务器模式：广播给所有客户端
+    if (serverSocket != INVALID_SOCKET) {
+        std::lock_guard<std::mutex> lock(clientsMutex);
+        for (auto client : clients) {
+            send(client, message.c_str(), message.size(), 0);
+        }
+    }
+    // 客户端模式：发送到服务器
+    else if (clientSocket != INVALID_SOCKET) {
+        send(clientSocket, message.c_str(), message.size(), 0);
+    }
+    
+    // 本地回显
+    if (messageCallback) {
+        messageCallback(message);
+    }
+}
+
+std::vector<std::string> NetworkManager::receiveMessages() {
+    std::vector<std::string> messages;
+    if (clientSocket == INVALID_SOCKET) {
+        return messages;
+    }
+
+    fd_set readSet;
+    FD_ZERO(&readSet);
+    FD_SET(clientSocket, &readSet);
+
+    struct timeval timeout;
+    timeout.tv_sec = 1;
+    timeout.tv_usec = 0;
+
+    if (select(clientSocket + 1, &readSet, nullptr, nullptr, &timeout) > 0) {
+        char buffer[1024];
+        int bytesReceived;
+        while ((bytesReceived = recv(clientSocket, buffer, sizeof(buffer), 0)) > 0) {
+            messages.emplace_back(buffer, bytesReceived);
+        }
+    }
+
+    return messages;
+}
+
+bool NetworkManager::isConnected() const {
+    return clientSocket != INVALID_SOCKET;
+}

others/C++/chat_room/src/RoomInfo.cpp

@@ -0,0 +1,31 @@
+#include "RoomInfo.hpp"
+
+RoomInfo::RoomInfo(const std::string& name, 
+                   const std::string& ip,
+                   int port,
+                   const std::string& password)
+    : name(name), ipAddress(ip), port(port), password(password), userCount(0) {}
+
+const std::string& RoomInfo::getName() const {
+    return name;
+}
+
+const std::string& RoomInfo::getIpAddress() const {
+    return ipAddress;
+}
+
+int RoomInfo::getPort() const {
+    return port;
+}
+
+const std::string& RoomInfo::getPassword() const {
+    return password;
+}
+
+int RoomInfo::getUserCount() const {
+    return userCount;
+}
+
+void RoomInfo::setUserCount(int count) {
+    userCount = count;
+}

others/C++/chat_room/src/StringUtils.cpp

@@ -0,0 +1,34 @@
+#include "StringUtils.hpp"
+#include <algorithm>
+#include <cctype>
+
+std::vector<std::string> StringUtils::split(const std::string& str, char delimiter) {
+    std::vector<std::string> tokens;
+    size_t start = 0;
+    size_t end = str.find(delimiter);
+    
+    while (end != std::string::npos) {
+        tokens.push_back(str.substr(start, end - start));
+        start = end + 1;
+        end = str.find(delimiter, start);
+    }
+    
+    tokens.push_back(str.substr(start));
+    return tokens;
+}
+
+std::string StringUtils::trim(const std::string& str) {
+    auto start = std::find_if_not(str.begin(), str.end(), [](int c) { return std::isspace(c); });
+    auto end = std::find_if_not(str.rbegin(), str.rend(), [](int c) { return std::isspace(c); }).base();
+    return (start >= end) ? "" : std::string(start, end);
+}
+
+bool StringUtils::startsWith(const std::string& str, const std::string& prefix) {
+    return str.size() >= prefix.size() && 
+           str.compare(0, prefix.size(), prefix) == 0;
+}
+
+bool StringUtils::endsWith(const std::string& str, const std::string& suffix) {
+    return str.size() >= suffix.size() && 
+           str.compare(str.size() - suffix.size(), suffix.size(), suffix) == 0;
+}

others/C++/chat_room/src/User.cpp

@@ -0,0 +1,25 @@
+#include "User.hpp"
+#include <chrono>
+
+User::User(const std::string& username, const std::string& ip) 
+    : username(username), ipAddress(ip) {
+    updateLastActive();
+}
+
+const std::string& User::getUsername() const {
+    return username;
+}
+
+const std::string& User::getIpAddress() const {
+    return ipAddress;
+}
+
+bool User::isActive() const {
+    auto now = std::chrono::system_clock::now();
+    auto duration = std::chrono::duration_cast<std::chrono::minutes>(now - lastActive);
+    return duration.count() < 5; // 5分钟内活跃
+}
+
+void User::updateLastActive() {
+    lastActive = std::chrono::system_clock::now();
+}

others/C++/chat_room/src/UserManager.cpp

@@ -0,0 +1,26 @@
+#include "UserManager.hpp"
+
+void UserManager::addUser(std::shared_ptr<User> user) {
+    users.push_back(user);
+}
+
+void UserManager::removeUser(const std::string& username) {
+    users.erase(
+        std::remove_if(users.begin(), users.end(),
+            [&username](const std::shared_ptr<User>& user) {
+                return user->getUsername() == username;
+            }),
+        users.end());
+}
+
+std::vector<std::shared_ptr<User>> UserManager::getUsers() const {
+    return users;
+}
+
+std::shared_ptr<User> UserManager::findUser(const std::string& username) const {
+    auto it = std::find_if(users.begin(), users.end(),
+        [&username](const std::shared_ptr<User>& user) {
+            return user->getUsername() == username;
+        });
+    return it != users.end() ? *it : nullptr;
+}

others/C++/chat_room/src/main.cpp

@@ -0,0 +1,6 @@
+#include "Application.hpp"
+
+int main(int argc, char** argv) {
+    Application app(argc, argv);
+    return app.run();
+}