pattern_formatter support most strftime format

example/bench.cpp

@@ -17,16 +17,18 @@ int main(int argc, char* argv[])
 {
     const unsigned int howmany = argc <= 1 ? 500000 : atoi(argv[1]);
 
-    //std::string pattern = "%Y:%m:%d %H:%M:%S.%e ---> [%n:%l] %t";
-    //auto formatter = std::make_shared<details::pattern_formatter>(pattern);
+    //std::string pattern = "%B %d, %Y %H:%M:%S.%e **************[%n:%l] %t";
+    std::string pattern = " [%z] %t";
+    auto formatter = std::make_shared<details::pattern_formatter>(pattern);
 
     logger cout_logger("bench", { std::make_shared<sinks::stderr_sink_mt>() });
+    cout_logger.formatter(formatter);
     cout_logger.info() << "Hello logger " << 1234;
 
     auto nullsink = std::make_shared<sinks::null_sink_st>();
-    auto rotating = std::make_shared<sinks::rotating_file_sink_mt>("myrotating", "txt", 1024 * 1024 * 5, 5, 1);
+    auto rotating = std::make_shared<sinks::rotating_file_sink_mt>("myrotating", "txt", 1024 * 1024 * 5, 5, 100);
 
-    logger my_logger("my_logger", { rotating });
+    logger my_logger("my_logger", { nullsink }, formatter);
 
     auto start = system_clock::now();
     for (unsigned int i = 1; i <= howmany; ++i)

include/c11log/details/fast_istostr.h

@@ -26,7 +26,7 @@ inline std::string& fast_itostr(int n, std::string& s, int padding)
 {
     if (n == 0)
     {
-        s = "0";
+        s = std::string(padding, '0');
         return s;
     }
 

include/c11log/details/fast_oss.h

@@ -143,6 +143,11 @@ public:
         _dev.sputn(s.data(), s.size());
     }
 
+    void write_data(const char* p, std::size_t size)
+    {
+        _dev.sputn(p, size);
+    }
+
     void write_str(const std::string& s)
     {
         _dev.sputn(s.data(), s.size());

include/c11log/details/line_logger.h

 #pragma once
 
-#include <sstream>
 #include "../common.h"
 #include "../logger.h"
-#include "fast_oss.h"
+#include "./fast_oss.h"
 
 
 // Line logger class - aggregates operator<< calls to fast ostream

include/c11log/details/log_msg.h

 #pragma once
 
 #include "../common.h"
-#include "fast_oss.h"
+#include "./fast_oss.h"
 
 namespace c11log
 {

include/c11log/details/os.h

@@ -3,6 +3,9 @@
 #include<string>
 #include<cstdio>
 #include<ctime>
+#ifdef _WIN32
+#include <Windows.h>
+#endif
 
 namespace c11log
 {
@@ -81,6 +84,17 @@ inline bool fopen_s(FILE** fp, const std::string& filename, const char* mode)
 #endif
 }
 
+inline float tz_offset()
+{
+#ifdef _WIN32
+    TIME_ZONE_INFORMATION tzinfo;
+    GetTimeZoneInformation(&tzinfo);
+    return tzinfo.Bias / -60.0f;
+#else
+    return 0.0f;
+#endif
+}
+
 
 } //os
 } //details

include/c11log/sinks/async_sink.h

@@ -5,7 +5,7 @@
 #include <atomic>
 #include <algorithm>
 
-#include "base_sink.h"
+#include "./base_sink.h"
 #include "../logger.h"
 #include "../details/blocking_queue.h"
 #include "../details/null_mutex.h"

include/c11log/sinks/base_sink.h

@@ -3,7 +3,7 @@
 #include<string>
 #include<mutex>
 #include<atomic>
-#include "sink.h"
+#include "./sink.h"
 #include "../formatter.h"
 #include "../common.h"
 #include "../details/log_msg.h"

include/c11log/sinks/file_sinks.h

@@ -3,7 +3,7 @@
 #include <fstream>
 #include <sstream>
 #include  <iomanip>
-#include "base_sink.h"
+#include "./base_sink.h"
 #include <mutex>
 #include "../details/null_mutex.h"
 #include "../details/flush_helper.h"

include/c11log/sinks/null_sink.h

 #pragma once
 #include <mutex>
-#include "base_sink.h"
+#include "./base_sink.h"
 #include "../details/null_mutex.h"
 
 

include/c11log/sinks/ostream_sink.h

@@ -5,7 +5,7 @@
 #include <memory>
 
 #include "../details/null_mutex.h"
-#include "base_sink.h"
+#include "./base_sink.h"
 
 namespace c11log
 {

include/c11log/sinks/stdout_sinks.h

@@ -2,7 +2,7 @@
 
 #include <iostream>
 #include <mutex>
-#include "ostream_sink.h"
+#include "./ostream_sink.h"
 #include "../details/null_mutex.h"
 
 namespace c11log