97 lines
		
	
	
		
			2.6 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			97 lines
		
	
	
		
			2.6 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
#pragma once
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#include <string>
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#include <chrono>
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#include <iomanip>
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#include <thread>
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#include <cstring>
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#include <sstream>
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#include "common_types.h"
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#include "details/os.h"
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#include "details/log_msg.h"
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#include "details/fast_oss.h"
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namespace c11log
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{
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namespace formatters
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{
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class formatter
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{
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public:
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    virtual void format(details::log_msg& msg) = 0;
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};
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class default_formatter: public formatter
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{
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public:
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    // Format: [2013-12-29 01:04:42.900] [logger_name:Info] Message body
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    void format(details::log_msg& msg) override
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    {
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        details::fast_oss oss;
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        _format_time(msg.time, oss);
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        if(!msg.logger_name.empty())
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            oss << " [" <<  msg.logger_name << ':' << c11log::level::to_str(msg.level) << "] ";
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        else
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            oss << " [" << c11log::level::to_str(msg.level) << "] ";
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        oss << msg.raw << details::os::eol();
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        msg.formatted = oss.str();
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    }
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private:
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    void _format_time(const log_clock::time_point& tp, std::ostream& output);
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};
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} //namespace formatter
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} //namespace c11log
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// Format datetime like this: [2014-03-14 17:15:22]
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inline void c11log::formatters::default_formatter::_format_time(const log_clock::time_point& tp, std::ostream &output)
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{
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    using namespace c11log::details::os;
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    using namespace std::chrono;
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#ifdef _WIN32 //VS2013 doesn't support yet thread_local keyword    
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    __declspec(thread) static char s_cache_timestr[128];
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    __declspec(thread) static int s_cache_timesize = 0;
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    __declspec(thread) static std::time_t s_cache_time_t = 0;
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#else
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    thread_local static char s_cache_timestr[128];
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    thread_local static int s_cache_timesize = 0;
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    thread_local static std::time_t s_cache_time_t = 0;
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#endif
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    //Cache every second
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    std::time_t tp_time_t = log_clock::to_time_t(tp);
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    if(tp_time_t != s_cache_time_t)
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    {
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        auto tm_now = details::os::localtime(tp_time_t);
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        std::ostringstream time_oss;
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        time_oss.fill('0');
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        time_oss << '[' << tm_now.tm_year + 1900 << '-';
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        time_oss.width(2);
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        time_oss << tm_now.tm_mon + 1 << '-';
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        time_oss.width(2);
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        time_oss << tm_now.tm_mday << ' ';
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        time_oss.width(2);
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        time_oss << tm_now.tm_hour << ':';
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        time_oss.width(2);
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        time_oss << tm_now.tm_min << ':';
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        time_oss.width(2);
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        time_oss << tm_now.tm_sec << ']';
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        //Cache the resulted string and its size
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        s_cache_time_t = tp_time_t;
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        const std::string s = time_oss.str();
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        s_cache_timesize = s.size();
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        std::memcpy(s_cache_timestr, s.c_str(), s_cache_timesize);
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    }
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    output.write(s_cache_timestr, s_cache_timesize);
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}
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