DriverPlatform-V3.1/Log4cpp/Log4CPP.h

#ifndef LOG4CPP_H
#define LOG4CPP_H

#include <log4cpp/Category.hh>
#include <log4cpp/Appender.hh>
#include <log4cpp/FileAppender.hh>
#include <log4cpp/RollingFileAppender.hh>
#include <log4cpp/OstreamAppender.hh>
#include <log4cpp/Layout.hh>
#include <log4cpp/PatternLayout.hh>
#include <log4cpp/Priority.hh>
#include <string>
#include <memory>
#include <unordered_map>
#include <mutex>
#include <sstream>
#include <type_traits>
#include <cstring>
#include <vector>
#include <map>
#include <chrono>
#include <iomanip>

// 前置声明
class LogInstance;

// 日志实例管理器（全局唯一，管理所有模块的日志实例）
class LogManager {
public:
    static LogManager& getInstance() {
        static LogManager instance;
        return instance;
    }

    // 注册模块日志实例
    void registerInstance(const std::string& module, LogInstance* instance) {
        std::lock_guard<std::mutex> lock(mtx_);
        instances_[module] = instance;
    }

    // 获取模块日志实例
    LogInstance* getInstance(const std::string& module) {
        std::lock_guard<std::mutex> lock(mtx_);
        auto it = instances_.find(module);
        return (it != instances_.end()) ? it->second : nullptr;
    }

    // 移除模块日志实例
    void unregisterInstance(const std::string& module) {
        std::lock_guard<std::mutex> lock(mtx_);
        instances_.erase(module);
    }

    // 获取所有注册的模块名
    std::vector<std::string> getRegisteredModules() {
        std::lock_guard<std::mutex> lock(mtx_);
        std::vector<std::string> modules;
        for (const auto& pair : instances_) {
            modules.push_back(pair.first);
        }
        return modules;
    }

private:
    LogManager() = default;
    ~LogManager() = default;
    LogManager(const LogManager&) = delete;
    LogManager& operator=(const LogManager&) = delete;

    std::unordered_map<std::string, LogInstance*> instances_;
    std::mutex mtx_;
};

// 日志配置结构体
struct LogConfig {
    std::string root_level = "DEBUG";
    std::string log_dir = "logs";
    std::string history_dir = "logs/history";
    unsigned int max_file_size = 10; // MB
    int max_backups = 5;
    std::string file_pattern = "%d{%Y-%m-%d %H:%M:%S.%l} [%p] - %F::%M@%L %m%n";
    std::string console_pattern = "%d{%H:%M:%S.%l} [%p] - %F::%M@%L %m%n";
    std::string log_file_name; // 自定义日志文件名（为空则使用模块名）
};

// 日志实例类（每个动态库一个实例）
class LogInstance {
public:
    LogInstance() = default;
    ~LogInstance() { destroyLog(); }

    // 初始化日志（module：模块名，确保唯一；configFile：可为空使用默认配置）
    bool init(const std::string& logHostName,
        const std::string& module,
        const std::string& configFile = "",
        bool toScreen = false);

    // 销毁日志
    void destroyLog();

    // 设置日志级别
    void setPriority(log4cpp::Priority::PriorityLevel consoleLevel,
        log4cpp::Priority::PriorityLevel fileLevel);

    // 日志输出接口（内部使用）
    template <typename... Args>
    void log(log4cpp::Priority::PriorityLevel level, const char* file, int line, const char* function,
        const std::string& format, Args&&... args) {
        if (!isInitialized_) return;

        std::lock_guard<std::mutex> lock(logMtx_);

        // 格式化消息
        std::string formattedMsg = formatMessage(format, std::forward<Args>(args)...);

        // 添加代码位置信息
        std::string location;
        if (file && function) {
            // 提取文件名（不含路径）
            const char* filename = strrchr(file, '/');
            if (!filename) filename = strrchr(file, '\\');
            filename = filename ? filename + 1 : file;

            std::ostringstream oss;
            oss << filename << "::" << function << "@" << line;
            location = oss.str();
        }

        // 输出到文件
        if (logCat) {
            if (!location.empty()) {
                logCat->log(level, "%s - %s", location.c_str(), formattedMsg.c_str());
            }
            else {
                logCat->log(level, "%s", formattedMsg.c_str());
            }
        }

        // 输出到控制台
        if (outToScreen && coutCat) {
            if (!location.empty()) {
                coutCat->log(level, "%s - %s", location.c_str(), formattedMsg.c_str());
            }
            else {
                coutCat->log(level, "%s", formattedMsg.c_str());
            }
        }
    }

    bool isInitialized() const { return isInitialized_; }
    const std::string& getModule() const { return moduleName; }
    const LogConfig& getConfig() const { return config_; }
    const std::string& getLogFileName() const { return actualLogFileName; }

private:
    // 解析配置文件
    bool parseConfigFile(const std::string& configFile, LogConfig& config);
    // 创建目录
    bool createDirectory(const std::string& dir);
    // 获取当前时间（带毫秒）
    void getCurrentTimeWithMs(std::string& timeStr);
    // 转换日志级别
    log4cpp::Priority::PriorityLevel parseLogLevel(const std::string& levelStr);
    // 移动旧日志到历史目录
    void moveOldLogsToHistory();

    // 格式化消息（替换 {$} 占位符）
    template <typename... Args>
    std::string formatMessage(const std::string& format, Args&&... args) {
        std::string result = format;
        std::vector<std::string> replacements;

        // 收集所有参数
        (replacements.push_back(toString(std::forward<Args>(args))), ...);

        // 替换所有 {$} 占位符
        size_t pos = 0;
        int argIndex = 0;
        while ((pos = result.find("{$}", pos)) != std::string::npos) {
            if (argIndex < replacements.size()) {
                result.replace(pos, 3, replacements[argIndex]);
                pos += replacements[argIndex].length();
                argIndex++;
            }
            else {
                // 参数不足，保留占位符
                pos += 3;
            }
        }

        return result;
    }

    // 类型转换为字符串
    template <typename T>
    std::string toString(T&& value);

    LogConfig config_;
    std::string logHost;
    std::string moduleName;
    std::string actualLogFileName; // 实际使用的日志文件名
    bool outToScreen = false;
    bool isInitialized_ = false;

    // log4cpp组件
    log4cpp::Category* logCat = nullptr;
    log4cpp::Category* coutCat = nullptr;
    log4cpp::RollingFileAppender* rollLogFile = nullptr;
    log4cpp::OstreamAppender* logScreen = nullptr;
    log4cpp::PatternLayout* logLayout = nullptr;
    log4cpp::PatternLayout* screenLayout = nullptr;

    // 线程安全锁
    std::mutex logMtx_;
};

// 日志模块初始化函数
bool initLogModule(const std::string& logHost,
    const std::string& module,
    const std::string& configFile = "",
    bool toScreen = false);

// 日志模块销毁函数
void destroyLogModule(const std::string& module);

// 获取所有已初始化的日志模块
std::vector<std::string> getInitializedLogModules();

// 销毁所有日志模块
void destroyAllLogModules();

// 类型转换实现
template <typename T>
std::string LogInstance::toString(T&& value) {
    using DecayedT = std::decay_t<T>;
    try {
        if constexpr (std::is_same_v<DecayedT, std::string> ||
            std::is_same_v<DecayedT, char*> ||
            std::is_same_v<DecayedT, const char*>) {
            return std::forward<T>(value);
        }
        else if constexpr (std::is_arithmetic_v<DecayedT> || std::is_enum_v<DecayedT>) {
            std::ostringstream oss;
            oss << value;
            return oss.str();
        }
        else {
            std::ostringstream oss;
            oss << std::forward<T>(value);
            return oss.str();
        }
    }
    catch (...) {
        return "[LOG_CONVERT_ERROR]";
    }
}

#endif // LOG4CPP_H