#ifndef __LOG_H_
#define __LOG_H_
//STD
#include <iostream>
#include <fstream>
#include <string>
#include <ctime>
#include <cstdlib>
#define HTML_LOG 1 //輸出為html格式
#define TXT_LOG 2 //輸出為txt格式
class Log
{
private:
static std::ofstream ms_file; //log檔案流
static const char *ms_path; //log檔案路徑
static int ms_logLevel; //小于logLevel的log將被列印出來
static int ms_logFileType; //log檔案型別
int m_nowLevel;
std::string *m_theFunctionName;//進入的函式名
public:
static void s_init(const char *i_path, int i_logLevel, int i_fileType);
static void s_stop();
static const char *endl;
Log(const char *funcName, int logLevel);
~Log();
template<typename Type>
void debug(Type msg);
template<typename Type>
Log& operator<<(Type msg);
};
// 初始化靜態成員變數
std::ofstream Log::ms_file;
const char *Log::ms_path = NULL; //log檔案路徑
int Log::ms_logLevel = 0; //小于logLevel的log將被列印出來
int Log::ms_logFileType = 0; //log檔案型別
const char *Log::endl = "\n";
inline
void Log::s_init(const char* i_path, int i_logLevel, int i_fileType)
{
ms_path = i_path;
ms_logLevel = i_logLevel;
ms_logFileType = i_fileType;
ms_file.open(ms_path, std::ios::out|std::ios::trunc);
if(!ms_file)
{
ms_file.close();
std::cout << "ERROR. Initializing Log::path.Path does not exist: "
<< ms_path <<std::endl;
exit(1);
}
if (ms_logFileType==HTML_LOG)
{
const char* utf8header = "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />";
ms_file << utf8header;
const char* styleType = "<head><style type=\"text/css\">r{color: red}b{color: blue}</style></head>";
ms_file << styleType;
Log::endl = "<br>";
}
}
inline
void Log::s_stop()
{
ms_file.close();
}
//系統當前時間
inline
std::string get_cur_datetime(const char* format)
{
time_t ttime = time(NULL);
struct tm* datetime = localtime(&ttime);
char datetime_str[64];
strftime(datetime_str, sizeof(datetime_str), format, datetime);
return datetime_str;
}
inline
Log::Log(const char *funcName, int level)
:m_theFunctionName(0),m_nowLevel(level)
{
if(m_nowLevel <= ms_logLevel) {
if (ms_logFileType==TXT_LOG) {
ms_file << "[" << get_cur_datetime("%d-%m-%Y][%H:%M:%S") << "] "
<< "[Enter function] " << funcName << std::endl;
m_theFunctionName = new std::string(funcName);
}
else if (ms_logFileType==HTML_LOG) {
ms_file << "<r>[" << get_cur_datetime("%d-%m-%Y][%H:%M:%S") << "]</r> "
<< "<b>[Enter function]</b><r>" << funcName << "<r><br>";
m_theFunctionName = new std::string(funcName);
}
else
{
std::cout << "ERROR. File type can't define." << std::endl;
}
}
}
inline
Log::~Log()
{
if(m_nowLevel <= ms_logLevel) {
if (ms_logFileType==TXT_LOG) {
ms_file << "[" << get_cur_datetime("%d-%m-%Y][%H:%M:%S") << "] "
<< "[Exit function] " << *m_theFunctionName << std::endl;
delete m_theFunctionName;
}
else if (ms_logFileType==HTML_LOG) {
ms_file << "<r>[" << get_cur_datetime("%d-%m-%Y][%H:%M:%S") << "]</r> "
<< "<b>[Exit function]</b><r>" << *m_theFunctionName << "<r><br>";
delete m_theFunctionName;
}
else
{
std::cout << "ERROR. File type can't define." << std::endl;
}
}
}
template<typename Type>
inline
void Log::debug(Type msg)
{
if(m_nowLevel <= ms_logLevel)
{
if (ms_logFileType==TXT_LOG)
{
ms_file << msg << std::endl;
}
else if (ms_logFileType==HTML_LOG)
{
ms_file << "<b>" << msg << "</b><br>";
}
else
{
std::cout << "ERROR. File type can't define." << std::endl;
}
}
}
template<typename Type>
inline
Log& Log::operator<<(Type msg)
{
if(m_nowLevel <= ms_logLevel)
{
if (ms_logFileType==TXT_LOG)
{
ms_file << msg;
}
else if (ms_logFileType==HTML_LOG)
{
ms_file << "<b>" << msg << "</b>";
}
else
{
std::cout << "ERROR. File type can't define." << std::endl;
}
}
return *this;
}
#endif /* defined(__LOG_H_) */
uj5u.com熱心網友回復：
各位大俠幫忙看看為什么會報C2039編譯錯誤。uj5u.com熱心網友回復：
const char *Log::ms_path = NULL; //log檔案路徑你定義了一個const受保護 不能更改他的值的變數 沒有意義啊 去掉 const
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