C/C++ win32 一个简单的写日志类
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2018-03-31 14:37:57
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Log.h文件
#pragma once #include "stdio.h" #include "windows.h" #include "tchar.h" #include "shlwapi.h" #pragma comment(lib,"shlwapi.lib") class Log { public: static bool Write(TCHAR* logStr, TCHAR* logType = _T("log"), TCHAR * logDir = _T("log")); //参数如何区分目录和文件: //如果最后有\\肯定是目录 //如果最后又后缀".",则肯定是文件 //如果最后没有\\,也没有后缀'.",则认为是路径 static bool CreateFolder(TCHAR* pszPath); private: Log(); ~Log(); static Log* InitInstance(); //当前路径 static TCHAR s_curPath[MAX_PATH]; //日志目录 static TCHAR s_logDir[MAX_PATH]; //日志的全目录路径 static TCHAR s_logPath[MAX_PATH]; static Log* s_instance; };
Log.cpp文件
#include "Log.h" Log* Log::s_instance = NULL; TCHAR Log::s_curPath[MAX_PATH]; TCHAR Log::s_logPath[MAX_PATH]; TCHAR Log::s_logDir[MAX_PATH]; Log * Log::InitInstance() { if (s_instance == NULL) { s_instance = new Log(); } return s_instance; } bool Log::Write(TCHAR * logStr, TCHAR * logType, TCHAR * logDir) { _tcscpy(s_logDir, logDir); InitInstance(); SYSTEMTIME time; GetLocalTime(&time); TCHAR date[128] = { 0 }, filename[128] = { 0 }, hh[50] = _T("\n"); _stprintf(date, _T("%d-%02d-%02d %02d:%02d:%02d"), time.wYear, time.wMonth, time.wDay, time.wHour, time.wMinute, time.wSecond); _stprintf(filename, _T("%s\\%s_%d-%02d-%02d.log"), s_logPath, logType, time.wYear, time.wMonth, time.wDay); FILE* fp; _tfopen_s(&fp, filename, _T("a,ccs=UTF-8")); TCHAR newstr[1024] = { 0 }; _stprintf(newstr, _T("%s : %s\n"), date, logStr); if (fp) { fwrite(newstr, sizeof(TCHAR), _tcslen(newstr), fp); fclose(fp); return true; } else { return false; } } bool Log::CreateFolder(TCHAR* pszPath) { //如果后面有\\则是路径,如果没有,但有后缀,则是文件,无后缀则也是路径 TCHAR szPath[_MAX_PATH] = { 0 }; _tcsncpy(szPath, pszPath, _MAX_PATH); szPath[_MAX_PATH - 1] = 0; TCHAR* pdot = _tcsrchr(szPath, _T('.')); TCHAR* psp = _tcsrchr(szPath, _T('\\')); if (psp && pdot && pdot > psp) { //在路径最后找到上面两个字符证明是文件,去掉文件名 psp[0] = 0; } else { //缺省是个目录,这个地方可能吧没有后缀的文件当作目录,这里不做处理,默认当成目录 } PathAddBackslash(szPath); if (PathIsDirectory(szPath)) return true; psp = _tcschr(szPath, _T('\\')); while (psp) { *psp = 0; if (!PathIsDirectory(szPath)) { if (!CreateDirectory(szPath, 0)) return false; } *psp = _T('\\'); psp = _tcschr(psp + 1, _T('\\')); } return true; }; Log::Log() { //取当前执行模块的全路径,如果此模块是被其它程序调用的,返回的路径还是这个程序的路径 ::GetModuleFileName(NULL, s_curPath, MAX_PATH); //从路径中移除文件名 PathRemoveFileSpec(s_curPath); _stprintf(s_logPath, _T("%s\\%s"), s_curPath, s_logDir); if (!CreateFolder(s_logPath)) { MessageBox(NULL, _T("日志目录创建失败"), NULL, 0); } } Log::~Log() { }
使用方法
Log::Write(_T("新字符串")); Log::Write(_T("debug"), _T("debug"));