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本文小编为大家详细介绍“怎么使用C++cmake实现日志类”，内容详细，步骤清晰，细节处理妥当，希望这篇“怎么使用C++cmake实现日志类”文章能帮助大家解决疑惑，下面跟着小编的思路慢慢深入，一起来学习新知识吧。

Logger.h

#pragmaonce#include<fstream>#include<sstream>#include<iostream>#include<string>#defineNAME_SPACE_START(name)namespacename{#defineNAME_SPACE_END}#ifndef_LOGGER_#define_LOGGER_NAME_SPACE_START(Log)classLogger{public:Logger()=delete;Logger(constLogger&)=delete;Logger(std::stringlogFilePath="",std::stringlogFileName="");~Logger()=default;voidLogStart(std::stringcontext);voidLogEnd(std::stringcontext);voidDebug(std::stringcontext);voidError(std::stringcontext);voidWarning(std::stringcontext);voidInfo(std::stringcontext);boolOpenFile(std::stringabsolutePath);boolCloseFile();std::stringstreamGetCurrentTime();public:staticstd::stringm_logFilePath;staticstd::stringm_title;private:std::ofstream_file;std::stringabsPath;};NAME_SPACE_END#endif//!_LOGGER_

Logger.cpp

#include"logger.h"#include<ctime>#include<exception>#include<fstream>#include<ios>#include<iterator>#include<ostream>#include<sstream>#include<streambuf>#include<string>#include<time.h>std::stringbasePath="C:\\";//日志路径std::stringbaseTitle="logger.txt";//日志文件名NAME_SPACE_START(Log)std::stringLogger::m_logFilePath=basePath;std::stringLogger::m_title=baseTitle;Logger::Logger(std::stringlogFilePath,std::stringlogFileName){std::stringabsolutePath="";if(logFilePath!=""){absolutePath+=logFilePath;}else{absolutePath+=Logger::m_logFilePath;}if(logFileName!=""){absolutePath+=logFileName;}else{absolutePath+=Logger::m_title;}this->absPath=absolutePath;}voidLogger::LogStart(std::stringcontext=""){if(!this->OpenFile(this->absPath))return;std::stringstreamss=GetCurrentTime();_file<<ss.str()<<"------------------------------LogStart"<<""<<context<<""<<"------------------------------"<<std::endl;this->CloseFile();}voidLogger::LogEnd(std::stringcontext=""){if(!this->OpenFile(this->absPath))return;std::stringstreamss=GetCurrentTime();_file<<ss.str()<<"------------------------------LogEnd"<<""<<context<<""<<"------------------------------"<<std::endl;this->CloseFile();}voidLogger::Debug(std::stringcontext=""){if(!this->OpenFile(this->absPath))return;std::stringstreamss=GetCurrentTime();_file<<ss.str()<<"[LogDebug]:"<<context<<std::endl;this->CloseFile();}voidLogger::Error(std::stringcontext=""){if(!this->OpenFile(this->absPath))return;std::stringstreamss=GetCurrentTime();_file<<ss.str()<<"[LogError]:"<<context<<std::endl;this->CloseFile();}voidLogger::Warning(std::stringcontext=""){if(!this->OpenFile(this->absPath))return;std::stringstreamss=GetCurrentTime();_file<<ss.str()<<"[LogWarning]:"<<context<<std::endl;this->CloseFile();}voidLogger::Info(std::stringcontext=""){if(!this->OpenFile(this->absPath))return;std::stringstreamss=GetCurrentTime();_file<<ss.str()<<"[LogInfo]:"<<context<<std::endl;this->CloseFile();}boolLogger::OpenFile(std::stringabsolutePath){try{this->_file.open(absolutePath,std::ios::out|std::ios::app);if(!_file.is_open()){returnfalse;}returntrue;}catch(std::exceptionex){returnfalse;}}boolLogger::CloseFile(){try{this->_file.close();returntrue;}catch(std::exceptionex){returnfalse;}}std::stringstreamLogger::GetCurrentTime(){std::stringstreamss;time_tnow=time(nullptr);tmcurr_tm;localtime_s(&curr_tm,&now);ss<<curr_tm.tm_year<<"-"<<curr_tm.tm_mon<<"-"<<curr_tm.tm_yday<<""<<curr_tm.tm_hour<<":"<<curr_tm.tm_min<<":"<<curr_tm.tm_sec<<"";returnss;}NAME_SPACE_END

main.cpp

#include<iostream>#include"logger.h"usingnamespacestd;usingnamespaceLog;intmain(){Loggerlog("F:/Visual-Studio-practice/vscode/mySource/");log.LogStart("main");log.Debug("main");log.Warning("main");log.Error("main");log.Info("main");log.LogEnd("main");return0;}

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

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