C++ cmake实现日志类的示例代码

CMake是一个跨平台的安装（编译）工具，可以用简单的语句来描述所有平台的安装(编译过程)。本文就来利用cmake实现日志类，感兴趣的小伙伴可以了解一下

Logger.h

#pragma once #include  #include  #include  #include  #define NAME_SPACE_START(name) namespace name { #define NAME_SPACE_END } #ifndef _LOGGER_ #define _LOGGER_ NAME_SPACE_START(Log) class Logger{ public: Logger() = delete; Logger(const Logger&) = delete; Logger(std::string logFilePath = "", std::string logFileName = ""); ~Logger() = default; void LogStart(std::string context); void LogEnd(std::string context); void Debug(std::string context); void Error(std::string context); void Warning(std::string context); void Info(std::string context); bool OpenFile(std::string absolutePath); bool CloseFile(); std::stringstream GetCurrentTime(); public: static std::string m_logFilePath; static std::string m_title; private: std::ofstream _file; std::string absPath; }; NAME_SPACE_END #endif //!_LOGGER_

Logger.cpp

#include "logger.h" #include  #include  #include  #include  #include  #include  #include  #include  #include  #include  std::string basePath = "C:\\";  //日志路径 std::string baseTitle = "logger.txt"; //日志文件名 NAME_SPACE_START(Log) std::string Logger::m_logFilePath = basePath; std::string Logger::m_title = baseTitle; Logger::Logger(std::string logFilePath, std::string logFileName){ std::string absolutePath = ""; if(logFilePath != ""){ absolutePath += logFilePath; } else{ absolutePath += Logger::m_logFilePath; } if(logFileName != ""){ absolutePath += logFileName; } else{ absolutePath += Logger::m_title; } this->absPath = absolutePath; } void Logger::LogStart(std::string context = ""){ if(!this->OpenFile(this->absPath)) return; std::stringstream ss=GetCurrentTime(); _file<CloseFile(); } void Logger::LogEnd(std::string context = ""){ if(!this->OpenFile(this->absPath)) return; std::stringstream ss=GetCurrentTime(); _file<CloseFile(); } void Logger::Debug(std::string context = ""){ if(!this->OpenFile(this->absPath)) return; std::stringstream ss=GetCurrentTime(); _file<CloseFile(); } void Logger::Error(std::string context = ""){ if(!this->OpenFile(this->absPath)) return; std::stringstream ss=GetCurrentTime(); _file<CloseFile(); } void Logger::Warning(std::string context = ""){ if(!this->OpenFile(this->absPath)) return; std::stringstream ss=GetCurrentTime(); _file<CloseFile(); } void Logger::Info(std::string context = ""){ if(!this->OpenFile(this->absPath)) return; std::stringstream ss=GetCurrentTime(); _file<CloseFile(); } bool Logger::OpenFile(std::string absolutePath){ try { this->_file.open(absolutePath, std::ios::out | std::ios::app); if(!_file.is_open()){ return false; } return true; } catch (std::exception ex) { return false; } } bool Logger::CloseFile(){ try{ this->_file.close(); return true; } catch(std::exception ex){ return false; } } std::stringstream Logger::GetCurrentTime(){ std::stringstream ss; time_t now=time(nullptr); tm curr_tm; localtime_s(&curr_tm, &now); ss<

main.cpp

#include  #include "logger.h" using namespace std; using namespace Log; int main(){ Logger log("F:/Visual-Studio-practice/vscode/mySource/"); log.LogStart("main"); log.Debug("main"); log.Warning("main"); log.Error("main"); log.Info("main"); log.LogEnd("main"); return 0; }

日志图片

本程序使用cmake生成

cmake文件

cmake_minimum_required(VERSION 3.0.0)
project(logger CXX)
set(CMAKE_INSTALL_PREFIX "F:/Visual-Studio-practice/vscode/mySource/build")
file(GLOB SOURCE_FILE ./src/logger.cpp)
add_library(logger_static STATIC ${SOURCE_FILE})
target_include_directories(logger_static PUBLIC header)

最外层cmake

cmake_minimum_required(VERSION 3.0.0)
project(MAIN VERSION 0.1.0)
set(CMAKE_BUILD_TYPE Debug)
set(UTILS_PATH ${PROJECT_SOURCE_DIR}/utils)
add_subdirectory(utils/Log)
add_executable(MAIN main.cpp)
include_directories(${UTILS_PATH}/Log/header)
target_link_libraries(MAIN logger_static)
enable_testing()
add_test(NAME MAIN_TEST COMMAND MAIN)

目录结构如下